Light source device for high performance backlight module

High-efficiency backlight module light source device

The present invention relates to an edge-lit backlight module structure, which is used to eliminate the air gap between the light source device and the light guide plate, and can position the light source device and the light guide plate to each other, and aims to provide a light source device capable of increasing the brightness of the backlight module. .

Press, generally used in the liquid crystal display of the information device, can choose to use the direct-lit or edge-lit backlight module structure according to the actual design requirements; as shown in the first figure, it is a side-light backlight mode A schematic diagram of the basic structure of the group structure is mainly provided with a plurality of light sources 12 on the light incident surface 131 of the light guide plate 13 so that the light from the light source 12 enters the light guide plate 13 from the light incident surface 131 and is emitted toward the light guide plate 13. The face 132 is fired to achieve the effect of the light source display.

However, when the light source 12 and the light guide plate 13 are assembled with each other, it is difficult to be positioned, and at the same time, the offset sliding is easy to occur, which affects the light quality of the backlight module, and there is an air gap d between each of the light sources 12 and the light guide plate 13. This will cause some of the light to be reflected by the light guide plate 13 and seriously affect the optical coupling efficiency between the light source 12 and the light guide plate 13, thereby reducing the brightness of the overall backlight module.

The present invention relates to an edge-lit backlight module structure, which is used to eliminate the air gap between the light source device and the light guide plate, and can position the light source device and the light guide plate to each other, and aims to provide a light source device capable of increasing the brightness of the backlight module. .

The light source device of the "high-efficiency backlight module" is disposed on a light-incident side of the light guide plate; wherein a filling member is disposed between the light source device and the light-incident surface to eliminate the light source device and the guide The air gap between the light plates and the light source device and the light guide plate are mutually positioned to enhance the light coupling efficiency between the light source device and the light guide plate to increase the brightness of the backlight module.

In order to enable the review board members to understand the structure of the creation and the overall operation mode, the following is a description of the following: The creation of the "High-efficiency backlight module light source device" is mainly for the edge-lit backlight module architecture. The light source device is modified. As shown in the second and third figures, the light source device is disposed on one side of the light incident surface 231 of the light guide plate 23. The light source device may be a plurality of point light sources 22 to allow the light source 22 to be used. The light enters the light guide plate 23 from the light incident surface 231 and is emitted toward the light exit surface 232 of the light guide plate 23 to achieve the effect of the light source display.

The focus of the present invention is that a filling member is disposed between the light source device and the light-incident surface. As shown, the filling member 3 is disposed at a position relative to each of the point light sources 22, and the filling member 3 may be colloidal or double-sided. The glue can be used to position each of the point light sources 22 and the light guide plate 23, and the filling member 3 is disposed to eliminate the air gap between the point light sources 22 and the light guide plate 23, and the filling member 3 has a refractive index of 1.4 to Between 1.8, when the light of each point light source 22 enters the inside of the light guide plate 23 by the filling member 3, the reflection of the light can be reduced, and the light transmittance incident to the inside of the light guide plate 23 can be increased to enhance the light source device and the guide. The optical coupling efficiency between the light plates increases the brightness of the backlight module.

Of course, the structure of the filling member 3 can be as shown in the fourth figure, which can be disposed in a whole form between the point light sources 22 and the light incident surface 231, and the point light source 22 and the light guide plate 23 can be mutually obtained. The effect of positioning.

As described above, the present invention provides another preferred light source device for the edge-lit backlight module frame, and the application for a new patent is filed according to law; however, the above implementation description and the drawings show that the present invention is preferably implemented. For example, it is not limited to this creation. Therefore, any similarity and similarity to the structure, installation, and features of this creation should be within the creation purpose and patent application scope of this creation.

<p>12. . . light source</p><p>13. . . Light guide</p><p>131. . . Glossy surface</p><p>132. . . Glossy surface</p><p>twenty two. . . point Light</p><p>twenty three. . . Light guide</p><p>231. . . Glossy surface</p><p>232. . . Glossy surface</p><p>3. . . Filling piece</p>

The first figure is a schematic diagram of the positioning structure of the conventional light source device.

The second figure is a perspective view of the structure of the light source device and the light guide plate in the present creation.

The third figure is a schematic structural view of the light source device and the light guide plate in the first embodiment of the present invention.

The fourth figure is a schematic structural view of a light source device and a light guide plate according to a second embodiment of the present invention.