Multi-primary color liquid crystal display device

The present invention generally relates to a multi-primary color display device, and more particularly to a multi-primary color liquid crystal display (LCD).

The liquid crystal display device includes an array of liquid crystal (LC) elements, which can be driven, for example, by one or more thin film transistor (TFT) elements. In various LCD devices, the LC array may include multiple column line drivers and multiple row line drivers that can control each element of the LC array. Patent Document 1 is an example of a conventional multi-primary color display device.

<p><patcit num="1"><text>International Publication No. 2002/10164</text></patcit></p>

<p> TFTs, row line drivers and column line drivers can block some of the light delivered to the LC array, thus reducing the brightness level of the display device. Therefore, it is desirable to reduce the amount of light blocked by the TFT, row line driver and column line driver. In addition, it is desirable to reduce the number of TFTs, row line drivers and / or column line drivers in order to reduce the cost of the display device.</p>

<p> Embodiments of the present invention include methods, devices and / or systems for displaying a color image having a plurality of pixels of four or more primary colors. According to various representative embodiments of the present invention, the device may include, for example, an array of subpixel elements of at least four different primary colors. In this case, the total number of sub-pixel elements in the array is significantly less than the product of multiplying the number of pixels of four or more primary colors in the image by the number of at least four different primary colors.</p><p> According to various representative embodiments of the present invention, the color display device is composed of at least four different primary colors arranged in at least a first and second repeatable color array of subpixel elements of at least three primary colors. It may include an array of sub-pixel elements. In this case, the first color array contains at least one primary color sub-pixel element not included in the second array, and / or the second color array contains at least one primary color sub-pixel not included in the first array. Can contain elements.</p><p> According to various representative embodiments of the present invention, the sub-pixel elements of the array can be arranged in a repeatable pattern containing each sub-pixel element of at least four primary colors. This pattern may include, for example, fewer sub-pixel elements of the first primary color than sub-pixel elements of the second primary color.</p><p> According to various representative embodiments of the present invention, the color display device selectively activates at least some of the sub-pixel elements of the array based on the sub-pixel data representing the pixels of the color image. It may include a controller capable of generating one or more attenuation patterns.</p><p> According to various representative embodiments of the present invention, the sub-pixel elements of the first and second color arrays can be activated based on the sub-pixel data corresponding to at least the first and second pixels of the color image. .. For example, at least one sub-pixel element in at least one of the first and second arrays can be activated based on a value determined by the combination of sub-pixel data of at least the first and second pixels.</p><p> According to various representative embodiments, the at least one activated sub-pixel element includes, for example, a primary color sub-pixel element not included in the second array, and the sub-pixel data is in the second array. Can include sub-pixel data of at least the first and second pixels corresponding to the primary colors not included in.</p><p> According to various representative embodiments, the sub-pixel element of the second array is, for example, a value determined by the combination of the sub-pixel data of the sub-pixel element to be activated and the primary colors not included in the second array. Can be activated based on.</p><p> According to various typical embodiments of the present invention, the first sub-pixel element of the second array is a combination of the sub-pixel data of the second pixel corresponding to the primary color of the first sub-pixel element and the first correction component. Can be activated based on the value determined by. The second sub-pixel element of the second array can be activated based on the value determined by the combination of the sub-pixel data of the second pixel corresponding to the primary color of the second sub-pixel element and the second correction component. And / or the sub-pixel element of the primary color not included in the second array is based on the value determined by the combination of the sub-pixel data of the first pixel corresponding to the primary color not included in the second array and the third correction component. Can be activated.</p>

<figref num="1">The schematic explanatory view which shows the display system of 4 or more primary colors based on the typical embodiment of this invention.</figref><figref num="2">The schematic explanatory view which shows the sub-pixel composition including the sub-pixel element of the repeatable pattern based on one typical embodiment of this invention.</figref><figref num="3A">The schematic diagram which shows the sub-pixel element of each 1st 5 primary color pattern which can be realized for forming the sub-pixel composition based on the other typical embodiment of this invention.</figref><figref num="3B">The schematic diagram which shows the sub-pixel element of each of the 2nd 5 primary color patterns which can be realized for forming the sub-pixel composition based on the other typical embodiment of this invention.</figref><figref num="4">FIG. 6 is a schematic explanatory view showing a sub-pixel configuration including sub-pixel elements of a repeatable pattern based on still another typical embodiment of the present invention.</figref><figref num="5">The schematic explanatory view which shows the sub-pixel element of the pattern which can be realized for forming the sub-pixel composition based on the other typical embodiment of this invention.</figref>

The present invention is construed with the accompanying drawings. In addition, the present invention can be fully understood by the following detailed description of the embodiments of the present invention. For the sake of simplicity and clarity, it can be recognized that the elements shown in the figure are not necessarily drawn exactly or to a uniform scale. For example, some elements have exaggerated dimensions for clarity, compared to other elements, or to some physical components contained within one element. In addition, reference numbers may be used repeatedly between figures to indicate corresponding or similar elements, where appropriate. It can be recognized that these figures describe examples of embodiments of the invention and do not limit the scope of the invention.

Hereinafter, various aspects of the present invention will be described for the purpose of explanation. Specific configurations and details will be described so that the present invention can be fully understood. However, it will be appreciated by those skilled in the art that the present invention may be practiced without the particular details described herein. In addition, various features of the invention that rely on principles and examples known in the art may be omitted or simplified to avoid obscuring the invention.

An embodiment of a monitor and display device having four or more primary colors based on a typical embodiment of the present invention is described in the international application PCT / IL02 / 00452 filed on June 11, 2002, entitled Devices and Systems for Color Display. And method , and published as PCT Gazette WO 02/101644 (Patent Document 1 above) on December 19, 2002, the disclosure contents of which are cited and referred to in the present specification.

FIG. 1 shows a color display system 100 having four or more primary colors based on a typical embodiment of the present invention. According to a representative embodiment of the present invention, the system 100 may include a light source 112 and an array of sub-pixel elements. For example, system 100 may juxtapose, for example, array 113 of liquid crystal (LC) element (cell) 114, which is an LC array using thin film transistor (TFT) active matrix technology known in the art. It may include a color filter array 116 of n primary colors (n is greater than 3). System 100 may include any other suitable configuration of sub-pixel elements. The system 100 may further include an electronic circuit 120 (driver) for driving the cells of the array 114, for example, by an active matrix drive scheme known in the art. According to various representative embodiments of the present invention, the pixels of a color image can be reproduced by subpixel elements of four or more primary colors, in which case each subpixel element is one of n primary colors. Correspond. The backside illumination source 112 supplies the light needed to generate the color image. The transmittance of each sub-pixel element can be controlled, for example, by the voltage applied to the corresponding LC cell of the array 113, based on the image data input for one or more corresponding pixels, as described below. n The primary color controller 118 can receive image data including sub-pixel data representing pixels of the color image, and selectively activates at least some sub-pixel elements of the array 113 based on the sub-pixel data. , It is possible to generate a decay pattern. For example, controller 118 receives the input data in the form of, for example, red (R), green (G) and blue (B), or YCbCr, and optionally scales the data to the desired size and resolution. Also, the magnitude of the signals output to different drivers can be adjusted based on the input data. The controller 118 converts input image data, for example, data including RGB image components or pixel YCbCr data, into subpixel data of four or more primary colors, for example, R, G, B, yellow (Y) and cyan (C). Can be converted to. White supplied by backside illumination source 112 The intensity of the colored light is spatially modulated by the elements of the LC array, as will be described later, and the irradiation of each sub-pixel element can be selectively controlled based on the image data of one or a plurality of pixels. The selectively attenuated light of each sub-pixel passes through the corresponding color filter of the color filter array 116, thereby producing a sub-pixel combination of the desired color. The human visual system perceives a color image by spatially integrating filtered light through sub-pixel elements of different colors.

The aperture ratio of an LCD display device can be defined as the ratio between the net area of the display device and the total area of the display device. Here, the net area of the display device is, for example, as is known in the art, the display device excluding the total shielded area, which is the sum of the areas of the display device "shielded" by the TFT and the column and row driver lines. Is defined as the total area of. For example, the total shielded area of a display device containing m sub-pixel elements in l rows includes one TFT for each sub-pixel element, one row driver line for each row, and one column driver for each column. If included, it can be calculated as follows.

m × L_column× t_column+ l × L_row× t_row+ l × m × S_tft (1) In the above formula, S_tftIndicates the shielded area of each TFT, L_rowAnd t_rowIndicates the length and width of each line driver line, respectively._columnAnd t_columnIndicates the length and width of each column driver line, respectively. Therefore, the total area of the display device is approximately L._column× L_rowAlso, the aperture ratio of the display device is the aspect ratio AR = L._row/ L_columnCan be calculated assuming that.

A large total shielding area means that the light supplied to the display device is shielded in a larger amount by the TFT and / or the driver line, which can correspond to a decrease in the brightness level of the display device. Those skilled in the art can recognize it.

According to various representative embodiments of the present invention, the system 100 is realized to reproduce a color image having a plurality of pixels of four or more primary colors by using an array of sub-pixel elements of at least four different primary colors. You can, but here, S_TThe total number of sub-pixel elements in the array represented by is much smaller than the product P = s × n. In this equation, as will be described in detail later, s indicates the number of pixels of four or more primary colors in the image, and n indicates the number of at least four different primary colors. For example, the number of sub-pixel elements in an array that is part of the product P can be related to the number of four or more primary colors. The array may include, for example, sub-pixel elements arranged in at least one repeatable color array of sub-pixel elements of at least three primary colors. Further, the total number of sub-pixel elements in the array that is a part of the product P is considered to be substantially equal to the number of sub-pixel elements in the color array divided by the number of four or more primary colors, as will be described later.

The human visual system can perceive different primary colors at different levels of spatial resolution. For example, human vision perceives some primaries, such as blue and cyan, at substantially lower spatial resolution levels compared to other primaries, such as green, yellow, and red. Can be. Therefore, according to embodiments of the present invention, some primary colors, such as blue and / or cyan, are less than, for example, other primary colors, such as red, green and / or yellow, as described below. A number of sub-pixel elements can be used to display at lower spatial resolutions without significantly affecting the overall resolution of the color image perceived by the human visual system.

According to a representative embodiment of the present invention, the sub-pixel elements of the array 113 each include a predetermined repeatable pattern containing a predetermined fixed number of sub-pixel elements corresponding to one of the n primary colors. Can be placed in the configuration of. For example, array 113 may include at least four different primary color subpixel elements arranged in at least first and second repeatable color arrays of at least three primary color subpixel elements, in which case the first. The color array includes at least one sub-pixel element of the primary colors not included in the second array, as described below. Therefore, this pattern may include a small number of sub-pixel elements corresponding to one or more predetermined primary colors as compared to the number of sub-pixel elements corresponding to the other plurality of primary colors. According to these representative various embodiments, some sub-pixel element drivers 120, for example, sub-pixel element drivers corresponding to one or more predetermined primary colors, are described in 2 A value corresponding to a combination of sub-pixel data of one or more pixels can be supplied. The operation of this image data can be performed by, for example, the controller 118.

FIG. 2 shows a configuration 200 of sub-pixel elements in a five primary color display device including a repeatable pattern 201, based on a typical embodiment of the present invention. Pattern 201 may include sub-pixel elements corresponding to five primary colors, eg red, yellow, green, cyan and blue, arranged in a row containing eight sub-pixel elements.

According to a typical embodiment, the pattern 201 has a small number corresponding to each of the blue and cyan primary colors as compared with the number of sub-pixel elements corresponding to each of the red, green and yellow primary colors, as will be described later. Can include sub-pixel elements of.

The pattern 201 has two sub-pixel elements corresponding to the red primary colors, for example, sub-pixel elements 211 and 215, two sub-pixel elements corresponding to the yellow primary colors, for example, sub-pixel elements 212 and 216, and two corresponding to the green primary color. One sub-pixel element, for example, sub-pixel elements 213 and 217, one sub-pixel element corresponding to the cyan primary color, for example, sub-pixel element 214, and one sub-pixel element corresponding to the blue primary color, for example, sub-pixel element 218. Can include.

According to a typical embodiment, the configuration 200 may include at least the first and second repeatable color arrays, eg, sub-pixel elements arranged in the color arrays 230 and 232. Array 230 may include at least one sub-pixel element consisting of primary colors not included in array 232, such as cyan, such as element 214. Array 232 may include at least one sub-pixel element consisting of primary colors not included in array 230, such as blue, such as element 218.

According to a typical embodiment, each of sequences 230 and 232 may include a predetermined sub-array consisting of several primary colors, eg, sub-pixel elements of a red-yellow-green sub-array. According to another embodiment of the invention, one or more of the repeatable color sequences may include any other predetermined sub-color sequence.

According to various representative embodiments of the present invention, each pixel of a color image can be reproduced by one or more sub-pixel elements of configuration 200. For example, the first pixel of a color image can be reproduced by sub-pixel elements 214, 215, 216, 217, and / or 218. For example, the second pixel adjacent to the first pixel can be reproduced by the sub-pixel elements 218, 233, 234, 235 and / or 236. According to various embodiments of the present invention, one or more sub-pixel elements of configuration 200, eg, sub-pixel elements corresponding to the blue and / or cyan primary colors, eg, sub-pixel elements 214 and / or 218. It can be activated based on a value determined by the combination of sub-pixel data corresponding to two or more pixels in a color image. Other sub-pixel elements of configuration 200, such as sub-pixel elements corresponding to the green, red and / or yellow primary colors, such as sub-pixel elements 211, 212, 213, 215, 216, 217, 233, 234 and / or 235. Can be activated based on sub-pixel data corresponding to one or more pixels. For example, one or more sub-pixel elements corresponding to one or more of the primary colors red, green or yellow, for example, one or more drivers of driver 120 (FIG. 1) may have one or more pixels of red, respectively. Values corresponding to green and yellow sub-pixel data can be supplied. This data processing may be provided by controller 118 (FIG. 1). A combination of sub-pixel elements corresponding to primary colors not included in one of arrays 230 and 232, for example, one driver of driver 120 (FIG. 1), with sub-pixel data of two or more pixels. Can supply the value determined by. For example, the driver of the sub-pixel element corresponding to the cyan primary color was determined by a combination of cyan sub-pixel data of two or more pixels, such as arithmetic mean, weighted average and / or any other suitable combination. Can supply value. One driver of the sub-pixel elements corresponding to the blue sub-pixels, for example, the driver 120 (FIG. 1), includes, for example, a combination of two or more pixels with blue sub-pixel data, such as arithmetic mean and weighting. Average and / Or it may supply the value determined by any other suitable combination. Two or more pixels are, for example, two or more adjacent pixels, for example, two or more vertically, horizontally and / or diagonally adjacent pixels, or any other two or more pixels in a color image. May include. Therefore, since the sub-pixel element of the pattern 201 can be activated to reproduce two pixels, the effective pixel size (effective pixel size) corresponding to the configuration 200 is the sum of the areas of the sub-pixel elements of the pattern 201. Those skilled in the art can recognize that it is equal to half. The controller 118 (FIG. 1) may rearrange the sub-pixel data to supply an array of desired values to the driver 120.

According to a typical embodiment of the present invention, the size of some sub-pixel elements may differ from the size of other sub-pixel elements in order to achieve the desired white balance of the display device. For example, the area covered by each sub-pixel element corresponding to the blue and / or cyan primary colors may be larger than the area covered by each sub-pixel element corresponding to the red, yellow and / or green primary colors.

A display system that realizes a configuration 200 for reproducing a color image containing s five primary color pixels in one row, for example, system 100 (Fig. 1), has a 4 × s column driver line and an l row driver line. Can be recognized by those skilled in the art. Further, such a display device may include, for example, 4 × s × l TFTs in which one TFT is arranged in each sub-pixel element. Therefore, the total shielded area of such a display device would be equal to the following equation.

4 × s × L_column× t_column+ l × L_row× t_row+ 4 × l × s × S_tft (2) The display device according to the typical embodiment described above is the number of column driver lines in another five primary color display system (eg, when five primary color sub-pixel elements are used to reproduce each pixel) (eg, 5). Xs), and the number of TFTs (eg, 5 × s × l), can be appreciated by those skilled in the art to include fewer column driver lines and fewer TFTs. As a result, the display device according to the above-mentioned typical embodiment also has a relatively small total shielding area, and as a result, the total shielding area of the other five primary color display systems, for example, 5 × s × L._column× t_column+ l × L_row× t_row+ 5 × l × s × S_tftAnd can result in higher brightness levels compared to the resulting brightness levels. For example, a 1280 x 720 display with a 16: 9 aspect ratio, ie s = 1280, l = 720 and L._row= 16/9 × L_columnThe display device can have an aperture ratio of about 70%, i.e. a total shielding area of about 30%, when five primary color sub-pixel elements are used to reproduce each pixel. Total occlusion area includes 6% TFT occlusion and 24% driver line occlusion, and t_row= t_columnAssuming that, the person skilled in the art can recognize that the TFT shielding can be reduced to about 5% and the driver line shielding can be reduced to about 20% by realizing the sub-pixel configuration 200. Thus, the aperture ratio of a display device that realizes such a configuration 200 can be increased by about 5% to reach a value of, for example, about 75%. Further, the realization of sub-pixel configuration 200 can reduce the number of column drivers by about 20%, which can reduce the data rate required to activate the sub-pixel elements of pattern 200.

According to another embodiment of the invention, for example, any other suitable pattern of sub-pixel elements containing any suitable two or more repeatable color arrays is achieved by the display system 100 (FIG. 1). A person skilled in the art can recognize that, for example, as will be described later, a sub-pixel configuration similar to the configuration 200 can be formed.

Further, in FIGS. 3A and 3B, a sub-pixel element of the first five primary color patterns 300 and a sub-pixel element of the second five primary color patterns 310 that can be realized to form the configuration 200 according to another typical embodiment of the present invention. Each pixel element is shown.

Pattern 300 may include two different rows, for example, rows 302 and 304. Row 302 may include, for example, sub-pixel elements arranged in the order "yellow-green-red-cyan-yellow-green-red-blue". Row 304 may include, for example, sub-pixel elements arranged in the order "yellow-green-red-blue-yellow-green-red-cyan". Thus, pattern 300 includes, for example, a first color array 303 that includes subpixel elements of the primary color "yellow-green-red-cyan" and, for example, subpixel elements of the primary color "yellow-green-red-blue". It may include a second color array 305.

Pattern 310 may include two different rows, for example row 312 and row 314. Line 312 may include, for example, subpixel elements arranged in the order "red-yellow-green-cyan-red-yellow-green-blue". Line 314 may include, for example, sub-pixel elements arranged in the order "red-yellow-green-blue-red-yellow-green-cyan". Therefore, the pattern 310 includes, for example, a first color array 313 including a sub-pixel element of the primary color "red-yellow-green-cyan" and a first color array 313 including a sub-pixel element of the primary color "red-yellow-green-blue". It may include a two-color array 315. According to other embodiments of the present invention, the pattern 300 and / or the pattern 310 may include any other suitable configuration of sub-pixel elements.

Those skilled in the art recognize that a pattern in which the cyan and blue primary colors are alternately arranged along the columns, such as pattern 300 or pattern 310, can be realized to achieve a more uniform color distribution throughout the display device. obtain.

According to various embodiments of the present invention, effective pixels in a color image can be reproduced by subpixel elements in two or more rows, as described below. FIG. 4 shows a configuration 400 of sub-pixel elements in a five primary color display device including a repeatable pattern 401, based on another typical embodiment of the present invention.

Pattern 401 may include subpixel elements corresponding to two adjacent rows, eg, rows 410 and 420, and five primary colors, eg red, yellow, green, cyan and blue. According to a typical embodiment, as will be described later, the pattern 401 has a small number corresponding to each of the blue and cyan primary colors as compared with the number of sub-pixel elements corresponding to each of the red, green and yellow primary colors. Can include sub-pixel elements of.

Row 420 may include four sub-pixel elements 412, 416, 415, and 434 corresponding to the red, yellow, red, and yellow primary colors, respectively. Line 410 may include four sub-pixel elements 413, 414, 417, and 418 corresponding to the green, cyan, green, and blue primary colors, respectively.

According to a typical embodiment, the sub-pixel elements of pattern 401 may be arranged in at least first and second repeatable color arrays, such as color arrays 460 and 462. The array 460 may include at least one subpixel element consisting of primary colors not included in the array 462, eg, cyan, eg, element 414. Array 462 may include at least one sub-pixel element consisting of primary colors not included in array 460, such as blue, such as element 418.

According to a typical embodiment, the sequences 460 and / or 462 may include sub-pixel elements of a predetermined sub-array consisting of several primary colors, eg, a red-yellow-green sub-array. According to various representative embodiments of the present invention, each pixel of a color image can be reproduced by one or more sub-pixel elements of configuration 400. For example, the first pixel of a color image can be reproduced by sub-pixel elements 416, 415, 414, 417 and / or 418. Also, for example, the second pixel adjacent to the first pixel can be reproduced by the sub-pixel elements 434, 418, 433, 435 and / or 436. According to various embodiments of the present invention, one or more sub-pixel elements of configuration 400, eg, sub-pixel elements corresponding to the blue and / or cyan primary colors, eg, sub-pixel elements 414 and / or 418. It can be activated based on a value determined by the combination of sub-pixel data corresponding to two or more pixels in the color image. One or more of the other sub-pixel elements of configuration 400, eg, sub-pixel elements corresponding to the green, red and / or yellow primary colors, eg, sub-pixel elements 416, 415, 417, 434, 435 and / or 433. Can be activated based on the sub-pixel data corresponding to the pixel of. For example, one or more of the sub-pixel elements corresponding to one or more of the red, green and / or yellow primary colors, respectively, for example, one or more of the drivers 120 (FIG. 1). Values corresponding to the red, green and / or yellow sub-pixel data of a plurality of pixels can be supplied. This data processing may be provided by controller 118 (FIG. 1). For example, the driver in the sub-pixel element driver 120 (FIG. 1) corresponding to the cyan primary color may include a combination of cyan sub-pixel data corresponding to two or more pixels, such as arithmetic mean, weighted average and / or any of them. It may supply values determined by other suitable combinations. For example, the driver in the sub-pixel element driver 120 (FIG. 1) corresponding to the blue sub-pixel includes a combination of blue sub-pixel data corresponding to two or more pixels, such as an arithmetic mean weighted average and / or It may supply the value determined by any other suitable combination. Two or more pixels are, for example, two or more adjacent pixels, for example, two or more vertically, horizontally and / or diagonally adjacent pixels, or It may contain any other two or more pixels of the image. Therefore, since the sub-pixel element of pattern 401 can be activated to reproduce two pixels, the effective pixel size corresponding to configuration 400 may be equal to half the sum of the areas of the sub-pixel elements of pattern 401. Those skilled in the art can recognize that. The controller 118 (FIG. 1) may rearrange the sub-pixel data to supply an array of desired values to the driver 120.

According to a typical embodiment of the present invention, the size of some sub-pixel elements may differ from the size of other sub-pixel elements in order to achieve the desired white balance of the displayed image. For example, the area of each sub-pixel element corresponding to the blue and / or cyan primary colors may be larger than the area of each sub-pixel element corresponding to the red, yellow and / or green primary colors.

A display system that realizes a configuration 400 for reproducing a color image containing s five primary color pixels in one row, for example, System 100 (Fig. 1), has a 2 × s column driver line and a 2 × l row driver. Those skilled in the art may recognize that lines may be included. Such a display device may also include, for example, 4 × s × l TFTs in which one TFT is arranged on each sub-pixel element. Therefore, the total shielded area of such a display device is equal to the following equation.

2 × s × L_column× t_column+ 2 × l × L_row× t_row+ 4 × l × s × S_tft (3) The overall cost of the driver line for a five primary color display device that achieves configuration 400 is that the cost of the column driver line is generally higher than the cost of the row driver line, so a conventional three primary color LCD display device, eg, 3x Those skilled in the art may recognize that it is small compared to the cost of the driver line of the display device, which includes the s column driver line and the l row driver line. In addition, the overall cost of the 5 primary color display device that achieves configuration 400 is the overall cost of the other 4 primary color display devices in which 4 or 5 primary color sub-pixel elements are used to reproduce each pixel. Also, those skilled in the art may recognize that the five primary color sub-pixel elements are small compared to the overall cost of the other five primary color display devices used to reproduce each pixel. ..

Further, the display device according to the above-mentioned typical embodiment has a total shielding area of a conventional three-primary-color LCD display device, for example, 3s × L._column× t_column+ l × L_row× t_row+ 3 × l × s × S_tftCompared to 2 × s × L_column× t_column+ 2 × l × L_row× t_row+ 4 × l × s × S_tftThose skilled in the art can recognize that they may have a total shielded area of. In addition, L_row= 16/9 × L_column, S = 1280, and l = 720, achieving configuration 400 can achieve an aperture ratio of about 78%, which is greater than an achievable aperture ratio corresponding to configuration 200, eg, 75%. Largely, this is also greater than the achievable aperture ratio, eg, 70%, corresponding to the five primary color display devices in which the five primary color subpixel elements are used to reproduce each pixel.

According to another embodiment of the invention, for example, any other suitable pattern of sub-pixel elements containing any two or more repeatable color arrays is realized by the display system 100 (FIG. 1). And, for example, one of ordinary skill in the art can recognize that a configuration similar to the configuration 400 can be formed, as will be described later.

Further, FIG. 5 shows a five primary color pattern 500 of sub-pixel elements that can be realized for forming a sub-pixel configuration according to another typical embodiment of the present invention. The pattern 500 may include four rows, eg, row 502, row 504, row 506, and row 508. Rows 504 and 508 may be exactly the same, and each of rows 504 and 508 may contain a two primary color sequence, eg, the sequence "red-yellow-red-yellow". Rows 506 and 508 may include three primary color sequences, such as "green-cyan-green-blue", and three primary color sequences, such as "green-blue-green-cyan", respectively. One of ordinary skill in the art can recognize that a pattern in which the cyan and blue primary colors are alternately arranged along the columns, for example, pattern 500, can be realized to achieve a more uniform color distribution throughout the display device.

For example, in various typical embodiments of the present invention described above, a value determined based on a combination of sub-pixel data corresponding to the cyan primary colors of two or more pixels is used as a driver for the sub-pixel element corresponding to the cyan primary colors. A controller capable of supplying and / or supplying a value determined based on a combination of sub-pixel data corresponding to the blue primary color of two or more pixels to the driver of the sub-pixel element corresponding to the blue primary color. For example, it may be related to controller 118 (Fig. 1). However, another typical embodiment of the present invention is, for example, one or more values determined based on any other desired combination of sub-pixel data of one or more pixels, as will be described later. It may include a controller that can be supplied to the driver of the sub-pixel element of, for example, controller 118 (FIG. 1).

According to various embodiments of the present invention, the controller 118 (FIG. 1) is based on, for example, at least the first and second color arrays described above, based on sub-pixel data corresponding to at least the first and second pixels of the color image. It is possible to provide a driver, for example, driver 120 (FIG. 1), corresponding to the sub-pixel element of. The controller 118 (FIG. 1) is at least in at least one of the first and second arrays, based on, for example, a value determined by the combination of sub-pixel data of at least the first and second pixels, as will be described later. It is possible to activate one sub-pixel element.

According to various representative embodiments of the present invention, the controller 118 (FIG. 1) is determined by the sub-pixel data of the sub-pixel element to be activated and the combination of primary colors not included in the 1st and 2nd arrays. It is possible to activate the sub-pixel elements of the 1st and 2nd arrays based on the values. For example, controller 118 (FIG. 1) supplies a value determined based on a combination of pixel green sub-pixel data and cyan sub-pixel data to the driver of the green sub-pixel element and / or pixel blue. It is possible to supply the value determined based on the combination of the sub-pixel data of (1) and the sub-pixel data of cyan to the driver of the blue sub-pixel element. Alternatively or additionally, the controller 118 supplies the driver of the cyan sub-pixel element with a value determined based on the combination of the pixel blue sub-pixel data and the cyan sub-pixel data, and / or. , It is possible to supply the value determined based on the combination of the blue sub-pixel data and the red sub-pixel data of the pixel to the driver of the red sub-pixel element.

In various embodiments, the green, blue, and cyan primary colors of the display device, eg, display device 100 (FIG. 1), are the predetermined green (G), blue (B) represented by the following equations in the XYZ color space, respectively. ) And cyan (C) can be represented by the primary color vectors.

<maths num="1"><img file="JP2011237806A_D0001.tif" /></maths> According to various representative embodiments of the present invention, combinations of green and blue primary color vectors, such as linear combinations, can be realized to produce colors that are approximately equal to or comparable to the cyan primary colors. The desired linear combination can be determined, for example, using the following equation.

<maths num="2"><img file="JP2011237806A_D0002.tif" /></maths> In the above equation, β and γ indicate the parameters related to the linear contribution of the blue and green primary colors, respectively. Using the linear combination according to Equation 4, for example, when the chromaticity values of the cyan primary colors are on the line connecting the chromaticity values of the green and blue primary colors, a color equivalent to the cyan primary colors can be reproduced, or, for example, When the chromaticity values of the cyan primary colors deviate from the line connecting the chromaticity values of the green and blue primary colors but are relatively close to each other, it can be recognized that a color comparable to the cyan primary colors can be reproduced.

As described above, some pixels of the display device 100 are reproducible by a plurality of sub-pixel elements (non-blue sub-pixel elements) that do not contain a blue sub-pixel element, and / or some pixels are It can be reproduced by a plurality of sub-pixel elements (non-cyan sub-pixel elements) that do not include a cyan sub-pixel. According to a typical embodiment of the present invention, the controller 118 (FIG. 1) can supply a value determined based on cyan subpixel data to the driver of one or more non-cyan subpixel elements. is there. For example, controller 118 (FIG. 1) may supply signals B'and G'to the driver of the blue and / or green sub-pixel elements to reproduce the pixels, for example, by the set of equations below.

<maths num="3"><img file="JP2011237806A_D0003.tif" /></maths> In the above equation, B, G, and C represent the blue, green, and cyan image components of the reproduced pixel. According to various representative embodiments of the present invention, the value of one or both of B'and / or G'is, for example, the value of B'and / or G'calculated by Equation 5, respectively. If the maximum produceable value of the blue and / or green primary colors is exceeded, it can be "clipping", i.e. set to the maximum generateable value of the blue and green primary colors, respectively.

By activating the blue and / or green sub-pixel elements based on the cyan sub-pixel data, the perceived spatial resolution of the cyan primary colors can be improved and / or the pixels and non-pixels reproduced by the non-blue sub-pixel elements. Those skilled in the art may recognize that the perceived brightness variation with and from the pixel reproduced by the cyan sub-pixel element can be reduced.

According to various representative embodiments of the present invention, for example, a color shift that may result from activating one or more non-cyan sub-pixel elements based on a value determined by cyan sub-pixel data. For example, the cyan shift should be reduced. According to various representative embodiments of the present invention, such a color shift is determined by a combination (eg, sum) of the blue subpixel data of the first pixel and the blue correction component ΔB, as will be described later. Based on the correction value, for example, the blue sub-pixel element of the first color array is activated, and the correction value determined by the combination (for example, sum) of the green sub-pixel data of the first pixel and the green correction component ΔG is obtained. Based on, for example, the green sub-pixel element of the first color array is activated, and the correction value determined by the combination of the cyan sub-pixel data of the second pixel and the cyan correction component ΔC (for example, the difference between them). Based on, for example, it can be reduced by activating the cyan subpixel element of the second color array (adjacent to the first color array).

According to various typical embodiments of the present invention, the correction components ΔC, ΔB, and ΔG are such that the brightness of the cyan primary color reproduced by the cyan subpixel element is the same as that of the blue primary color reproduced by the blue subpixel element. It can be determined to be substantially equal to the sum of the brightness and the brightness of the green primary color due to the green correction component ΔG. Further, the amount of cyan color due to the cyan correction component ΔC is the amount of cyan equivalent color reproduced by the green and blue subpixel elements, for example, the amount of blue color due to the blue correction component ΔB and the green correction component ΔG. It is desirable that it is substantially equal to the sum of the amount of green due to. For example, the correction component can be determined using the following equation.

<maths num="4"><img file="JP2011237806A_D0004.tif" /></maths>In the above formula, Y_C, Y_B, And Y_GIndicates the brightness of the cyan, blue and green primary colors.

Substituting Equation 4 into Equation 7 and rearranging the terms gives the following equation.

<maths num="5"><img file="JP2011237806A_D0005.tif" /></maths> Substituting equations 8 and 9 into equation 6 and rearranging the terms gives the following equation.

<maths num="6"><img file="JP2011237806A_D0006.tif" /></maths> According to a typical embodiment of the present invention, the controller 118 (FIG. 1) sets the cyan correction component ΔC value to, for example, the primary color luminance value Y._C, Y_B, And Y_G, The predetermined parameters β and γ, and the values corresponding to the cyan and blue sub-pixel data of the first pixel can be determined by substituting into Equation 10. The controller 118 can further determine the value of the blue correction component ΔB and / or the value of the green correction component ΔG using, for example, equations 8 and 9. The controller 118 may supply correction values to the blue, green and cyan sub-pixel elements, for example, based on, for example, the correction components ΔB, ΔG, and ΔC, as described above.

According to various representative embodiments of the present invention, the correction value given to the blue sub-pixel and / or the correction value given to the green sub-pixel is given to, for example, the blue sub-pixel element. Clipping is possible if the correction value and / or the correction value given to the green sub-pixel element exceeds the maximum generateable value of the blue and / or green primary colors, respectively.

For example, various representative embodiments of the invention described above activate green and / or blue subpixel elements based on cyan subpixel data and / or based on correction values, green, blue and / Or related to activating the cyan subpixel element. However, other embodiments of the invention likewise combine one or more other sub-pixel elements, such as a cyan sub-pixel element or a cyan and red sub-pixel element, with other sub-pixel data, such as, for example. It can be realized to activate based on the blue sub-pixel data and / or to activate other sub-pixel elements such as cyan red and blue sub-pixel elements based on the correction value. For example, in other embodiments, the one or more sub-pixel elements are any suitable combination of sub-pixel data of one or more pixels, eg, a combination corresponding to the spatial function of one or more pixels. Can be activated based on.

The various typical devices, systems and / or methods described above have been described with respect to devices for reproducing the five primary colors, but similar devices, systems and / or methods will exceed five with appropriate modifications. Those skilled in the art can recognize that a device for reproducing one or less primary colors can be realized.

Although various features of the present invention have been illustrated and described herein, it will be appreciated by those skilled in the art that various modifications, substitutions, modifications, and equivalents are possible. Therefore, it can be understood that the appended claims cover all such modifications and modifications that fall within the scope of the ideas of the present invention.