Backlight module
Abstract
The cymbal is provided with a plurality of cymbals on the illuminating surface of the light guide plate when the cymbal is applied to the backlight module. The bottom surface and the light-emitting surface of the light guide plate are provided with an optical structure arranged in the X and Y directions, so that the light is emitted through the light guide plate and the cymbal, and no interference phenomenon (MOIRE) occurs.
Term
No projected expiry on record.
- Priority and filed
- Granted
- Today
13 claims: 13 independent, 0 dependent
- 1A backlight module includes at least:a light guide plate, the light guide plate has a light incident surface, a bottom surface intersecting with the light incident surface, and a light emitting surface opposite to the bottom surface, and the bottom surface and the light emitting surface are constructed with A plurality of groove-shaped optical structures, the optical structures of the bottom surface and the light emitting surface are respectively arranged in the X and Y directions;the light source is arranged on one side corresponding to the light incident surface of the light guide plate;at least one cymbal, the cymbal It is set on the light-emitting surface of the light guide plate, and a plurality of cymbals are arranged on the cymbal plate, and each cymbal structure is rotated by an angle. M328017 九、申請專利範圍： 1. 一種背光模組，其至少包含有： 導光板，該導光板具有一入光面、一與該入光面相交之底 面，以及一與該底面相對之出光面，該底面及出光面係建構有 複數複數溝槽狀的光學結構，該底面及出光面之光學結構係分 別成X、Y方向排列； ^ 光源，係設置於對應該導光板入光面之一側； 、 至少一稜鏡片，該稜鏡片係設於導光板之出光面上，而該 •稜鏡片上係設有複數稜鏡結構，各稜鏡結構係旋轉一角度。 2. 如申請專利範圍第1項所述背光模組，其中，該導光 板底面之光學結構係朝平行排列，而該導光板出光面之光學結 構係朝垂直排列。 3. 如申請專利範圍第2項所述背光模組，其中，該稜鏡 片之稜鏡結構係以導光板底面之光學結構排列方向而旋轉一 角度。 4. 如申請專利範圍第2項所述背光模組，其中，該稜鏡 _片之稜鏡結構係與導光板底面之光學結構形成約3〜15度之夾 角。 5. 如申請專利範圍第2項所述背光模組，其中，該稜鏡 片之稜鏡結構係以導光板出光面之光學結構排列方向而旋轉 一角度。 6. 如申請專利範圍第2項所述背光模組，其中，該稜鏡 片之稜鏡結構係與導光板出光面之光學結構形成約3〜15度之 夾角。 7. —種背光模組，其至少包含有： M328017 導光板，該導光板具有一入光面、一與該入光面相交之底 面，以及一與該底面相對之出光面，該底面及出光面係建構有 複數複數溝槽狀的光學結構，該底面及出光面之光學結構係分 別成X、γ方向排列； 光源，係設置於對應該導光板入光面之一側； 至少一稜鏡片，該稜鏡片係設於導光板之出光面上，而該 •稜鏡片係具有兩兩相對應之第一、第二邊側，該棱鏡片上係設 ，有複數棱鏡結構，其中部分稜鏡結構係由第一邊側延伸至第二 鲁邊侧，而部分棱鏡結構係由第一邊側延伸至相對之另第一邊 侧，且該稜鏡結構係與第一、第二邊側之夾角不等於90度。 8. 如申請專利範圍第7項所述背光模組，其中，該導光 板底面之光學結構係朝平行排列，而該導光板出光面之光學結 構係朝垂直排列。 9. 如申請專利範圍第8項所述背光模組，其中，該稜鏡 片之第二邊侧係與導光板底面之光學結構平行。 10. 如申請專利範圍第9項所述背光模組，其中，該第二 φ邊侧係與導光板入光面平行。 ‘ 11.如申請專利範圍第8項所述背光模組，其中，該棱鏡 片之第二邊側係與導光板出光面之光學結構平行。 12. 如申請專利範圍第9項所述背光模組，其中，該第二 邊側係與導光板入光面垂直。 13. 如申請專利範圍第9或11項所述背光模組，其中，該 稜鏡結構係與第二邊側之夾角約為3〜15度。 12 一種背光模組，其至少包含有：導光板，該導光板具有一入光面、一與該入光面相交之底面，以及一與該底面相對之出光面，該底面及出光面係建構有複數複數溝槽狀的光學結構，該底面及出光面之光學結構係分別成X、Y方向排列；光源，係設置於對應該導光板入光面之一側；至少一稜鏡片，該稜鏡片係設於導光板之出光面上，而該稜鏡片上係設有複數稜鏡結構，各稜鏡結構係旋轉一角度。
- 2According to the backlight module described in the first item of the patent application scope, the optical structure on the bottom surface of the light guide plate is aligned in parallel, and the optical structure on the light exit surface of the light guide plate is aligned in vertical direction. 如申請專利範圍第1項所述背光模組，其中，該導光板底面之光學結構係朝平行排列，而該導光板出光面之光學結構係朝垂直排列。
- 3For example, the backlight module according to item 2 of the scope of the patent application, wherein the cymbal structure of the cymbal is rotated by an angle with the arrangement of the optical structure on the bottom surface of the light guide plate. 如申請專利範圍第2項所述背光模組，其中，該稜鏡片之稜鏡結構係以導光板底面之光學結構排列方向而旋轉一角度。
- 4For example, the backlight module according to item 2 of the scope of the patent application, wherein the ridge structure of the cymbal plate forms an angle of about 3-15 degrees with the optical structure on the bottom surface of the light guide plate. 如申請專利範圍第2項所述背光模組，其中，該稜鏡片之稜鏡結構係與導光板底面之光學結構形成約3~15度之夾角。
- 5For example, the backlight module according to item 2 of the scope of the patent application, wherein the cymbal structure of the cymbal is rotated by an angle with the arrangement of the optical structure on the light-emitting surface of the light guide plate. 如申請專利範圍第2項所述背光模組，其中，該稜鏡片之稜鏡結構係以導光板出光面之光學結構排列方向而旋轉一角度。
- 6For example, the backlight module described in item 2 of the scope of patent application, wherein the cymbal structure of the cymbal forms an angle of about 3-15 degrees with the optical structure of the light-emitting surface of the light guide plate. 如申請專利範圍第2項所述背光模組，其中，該稜鏡片之稜鏡結構係與導光板出光面之光學結構形成約3~15度之夾角。
- 7A backlight module includes at least:a light guide plate, the light guide plate has a light incident surface, a bottom surface intersecting with the light incident surface, and a light emitting surface opposite to the bottom surface, and the bottom surface and the light emitting surface are constructed with A plurality of groove-shaped optical structures, the optical structures of the bottom surface and the light emitting surface are respectively arranged in the X and Y directions;the light source is arranged on one side corresponding to the light incident surface of the light guide plate;at least one cymbal, the cymbal The cymbal is provided on the light-emitting surface of the light guide plate, and the cymbals have first and second sides corresponding to each other. The cymbal is provided with a plurality of cymbals, and part of the cymbals are formed by the first The sides extend to the second side, and part of the concrete structure extends from the first side to the opposite first side, and the angle between the concrete structure and the first and second sides is not equal to 90 degrees . 一種背光模組，其至少包含有：導光板，該導光板具有一入光面、一與該入光面相交之底面，以及一與該底面相對之出光面，該底面及出光面係建構有複數複數溝槽狀的光學結構，該底面及出光面之光學結構係分別成X、Y方向排列；光源，係設置於對應該導光板入光面之一側；至少一稜鏡片，該稜鏡片係設於導光板之出光面上，而該稜鏡片係具有兩兩相對應之第一、第二邊側，該稜鏡片上係設有複數稜鏡結構，其中部分稜鏡結構係由第一邊側延伸至第二邊側，而部分稜鏡結構係由第一邊側延伸至相對之另第一邊側，且該稜鏡結構係與第一、第二邊側之夾角不等於90度。
- 8For example, the backlight module according to item 7 of the scope of the patent application, wherein the optical structure on the bottom surface of the light guide plate is aligned in parallel, and the optical structure on the light exit surface of the light guide plate is aligned vertically. 如申請專利範圍第7項所述背光模組，其中，該導光板底面之光學結構係朝平行排列，而該導光板出光面之光學結構係朝垂直排列。
- 9The backlight module according to item 8 of the scope of patent application, wherein the second side of the cymbal is parallel to the optical structure of the bottom surface of the light guide plate. 如申請專利範圍第8項所述背光模組，其中，該稜鏡片之第二邊側係與導光板底面之光學結構平行。
- 10The backlight module according to item 9 of the scope of patent application, wherein the second side is parallel to the light incident surface of the light guide plate. 如申請專利範圍第9項所述背光模組，其中，該第二邊側係與導光板入光面平行。
- 11For example, the backlight module according to item 8 of the patent application scope, wherein the second side of the cymbal is parallel to the optical structure of the light exit surface of the light guide plate. 如申請專利範圍第8項所述背光模組，其中，該稜鏡片之第二邊側係與導光板出光面之光學結構平行。
- 12The backlight module according to item 9 of the scope of patent application, wherein the second side is perpendicular to the light incident surface of the light guide plate. 如申請專利範圍第9項所述背光模組，其中，該第二邊側係與導光板入光面垂直。
- 13For example, the backlight module according to item 9 or 11 of the scope of patent application, wherein the angle between the chirped structure and the second side is about 3-15 degrees. 如申請專利範圍第9或11項所述背光模組，其中，該稜鏡結構係與第二邊側之夾角約為3~15度。
Independent claims13
20 paragraphs, as filed
Backlight module
This creation is to provide a cymbal and a backlight module to which it is applied. The purpose is to provide a cymbal structure that, when used in a backlight module, can prevent the iris from the interference phenomenon (MOIRE) and the backlight applied to it. Module.
Flat display technology is widely used in TV monitors, computer monitors, and handheld electronic appliances (such as mobile phones, personal digital assistants (PDAs), etc.). Liquid crystal displays (LCDs) are one type of flat display. A liquid crystal (LC) module having a pixel array to express an image. In backlit LCDs, the brightness enhancement film uses a structure to guide light along the line of sight (Note: perpendicular to the display) to enhance the brightness of the light seen by the user, thus making this system less The energy to produce the required on-axis lighting. Until now, brightness enhancement films were supplied by parallel trenches, lenticular grooves, or pyramid-shaped grooves on the light-emitting surface of the film to change the angle between the film and the air interface so that light can excite the film. The light can be obliquely incident on the surface of other films to redistribute, so that more light can be perpendicular to the light output surface of the film. The brightness enhancement film has a smooth light incident surface through which light is allowed to enter through the backlight module. To date, many applications have used two mutually enhanced brightness enhancement film layers, so that the grooves in the respective film layers are at an angle of 90 degrees from each other. When two brightness enhancement films of a flat display are used, an undesired interference phenomenon (MOIRE) may occur, which is caused by two periodic chirped mode structures on the surfaces of the two brightness enhancement films.
As shown in the first figure, the current conventional backlight module 1 includes a light source 10, a light guide plate 12, a plurality of optical films, and a liquid crystal panel 14. The light guide plate 12 is formed with continuous sawtooth directly on the upper and lower plates. The groove-shaped optical structure 121 is arranged on the upper and lower surfaces of the light guide plate 12 respectively in the X and Y directions. For example, the optical structure 121 provided on the upper plate surface is arranged vertically and the lower plate is arranged. The optical structure 121 on the surface forms a horizontal arrangement. After the light entering from the light source 10 is converted into vertical plane light by the light guide plate 12, it passes through the optical structure 121 on the surface of the light guide plate 12 to collect and adjust the light in the X and Y directions The light diverges, and has the function of condensing and enhancing light.
The plurality of optical films disposed above the light guide plate 12 may be a diffusion sheet 13 and first and second diaphragms 15 and 16. The first and second diaphragms 15 and 16 are provided with a plurality of diaphragm structures 151 and 161. The plural cymbals 151 of the first cymbal 15 are arranged vertically, and the plural cymbals 161 of the second cymbal 16 are arranged horizontally; however, the plural arranged horizontally on the second cymbal 16 The structure 161 makes it easy for the light guide plate 12 and the liquid crystal panel 14 to interfere with each other (MOIRE), so that the overall display effect will have a moire image.
The main purpose of this creation is to provide a backlight module that can prevent the occurrence of interference (MOIRE).
In view of this, the cymbals of this creation are provided with a plurality of cymbals, each of which is rotated by an angle. When the cymbals are used in a backlight module, the cymbals are provided on the light exit surface of the light guide plate. The bottom surface and the light exit surface of the light guide plate are provided with optical structures arranged in the X and Y directions, so that light is emitted through the light guide plate and the cymbal plate, and no interference phenomenon (MOIRE) will occur.
In order to make it easy for your reviewing members to understand the content of this creation, and the effects that can be achieved, specific examples are given in conjunction with the drawings. The detailed description is as follows: The "backlight module" of this creation, the basic structure of the cymbal 2 is as follows As shown in the second and third figures, the cymbal plate 2 has first and second sides 21 and 22 corresponding to each other. The cymbal plate 2 is provided with a plurality of cymbal structures 23, each cymbal structure. 23 is rotated by an angle so that part of the cymbal structure 23 extends from the first side 21 to the second side 22, which is the cymbal structure 23 in the upper left part and the lower right part of the cymbal 2 in the third figure. , And part of the concrete structure 23 extends from the first side 21 to the opposite first side 21, and the angle between the concrete structure 23 and the first and second sides 21 and 23 is not equal to 90 degrees, In this embodiment, the rotation angle of the concrete structure 23 is about 3-15 degrees. As shown in the fourth figure, the angle θ between the concrete structure 23 and the second side 23 is about 3-15 degrees.
When the cymbal 2 is used in a backlight module, as shown in the fifth figure, the backlight module includes at least: a light guide plate 3, a plurality of light sources 4, and at least one cymbal 2, wherein the light guide plate 3 has a The light incident surface 31, a bottom surface 32 intersecting the light incident surface 31, and a light emitting surface 33 opposite to the bottom surface 32. The bottom surface 32 and the light emitting surface 33 are configured with a plurality of groove-shaped optical structures 34. The optical structures of the bottom surface 32 and the light emitting surface 33 are respectively arranged in the X and Y directions. In the embodiment shown in the figure, the optical structures 34 of the light guiding plate bottom surface 32 are aligned in parallel, and the optical structure of the light guiding plate 33 The structures 34 are arranged vertically, and the plurality of light sources 4 are disposed on one side corresponding to the light incident surface 31 of the light guide plate. The light sources 4 may be point light sources or line light sources (as shown in the sixth figure).
Among them, the cymbal structure of the cymbal is rotated by an angle in the direction of the arrangement of the optical structure on the bottom surface of the light guide plate. The cymbal structure of the cymbal forms an angle of about 3 to 15 degrees with the optical structure on the bottom surface of the light guide plate. As shown in the figure, the second side 22 of the cymbal 2 is parallel to the light incident surface 31 of the light guide plate, and the second side 22 is parallel to the optical structure 34 of the bottom surface 32 of the light guide plate. The angle between the mirror structure 23 and the second side 22 is about 3-15 degrees.
Alternatively, the cymbal structure of the cymbal is rotated at an angle in the direction of the arrangement of the optical structures on the light guide surface of the light guide plate, and the cymbal structure of the cymbal forms an angle of about 3 to 15 degrees with the optical structure of the light guide surface of the light guide plate. In specific implementation, as shown in the sixth figure, the second side 22 of the cymbal 2 is perpendicular to the light guide surface 31 of the light guide plate, and the second side 22 is parallel to the optical structure 34 of the light guide plate 33 light exit surface 33 The angle between the concrete structure 23 and the second side 22 is about 3-15 degrees.
In the above embodiments, the cymbal structure on the cymbal is rotated by an angle, so that the cymbal structure is not arranged in parallel with the optical structure on one side of the light guide plate, so that the light from the light source is emitted through the light guide plate, the cymbal, and the liquid crystal panel. At this time, the interference phenomenon (MOIRE) between the light guide plate and the liquid crystal panel can be prevented.
As mentioned above, this creation provides another better and feasible backlight module, which filed a new patent application according to law; however, the above implementation descriptions and drawings are for the preferred embodiment of this creation, and are not based on this. The limitation of this creation is that all similarities and similarities in the structure, installation, features, etc. of this creation shall fall within the scope of the creation purpose and patent application scope of this creation.
<p>1. . .Backlight module</p><p>10. . .light source</p><p>12. . .Light guide</p><p>121. . .Optical structure</p><p>13. . .Diffuser</p><p>14. . .LCD panel</p><p>15. . .First sepal</p><p>151. . . Prism Structure</p><p>16. . .Second sepal</p><p>161. . . Prism Structure</p><p>2. . .Sepals</p><p>twenty one. . .First side</p><p>twenty two. . .Second side</p><p>twenty three. . . Prism Structure</p><p>3. . .Light guide</p><p>31. . .Incident surface</p><p>32. . .Underside</p><p>33. . .Light surface</p><p>34. . .Optical structure</p><p>4. . .light source</p>
The first figure is a perspective view of the structure of a conventional backlight module.
The second picture is a structural perspective view of the cymbal in the creation.
The third picture is a schematic diagram of the structure of the cymbal in this creation.
The fourth picture is a partial enlarged structure diagram of the cymbal in this creation.
The fifth figure is a structural perspective view of the first embodiment of the cymbal applied to the backlight module in the creation.
The sixth diagram is a structural perspective view of the second embodiment of the cymbal applied to the backlight module in the creation.
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US8573825B2 | Cited by | United States of America | Applicant |
| US8147111B2 | Cited by | United States of America | Applicant |
| US9575238B2 | Cited by | United States of America | Applicant |
2 priority claims, no other members on record
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 96215483 | Taiwan Province of China | U | |
| TW20070215483U | – | – | – |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Expiration of patent term of a granted utility modelGrantedMK4K | MK4K |
Numbers
- Publication
- M328017
- Publication, DOCDB
- M328017
- Publication, EPODOC
- TWM328017U
- Application
- 96215483
- Application, DOCDB
- 96215483
- Application, EPODOC
- TW20070215483U
Titles2
- English
- Backlight module
- Chinese
- ????