TWI421595B - Light source module structure - Google Patents

Description

Light source module structure

The invention is a light source module structure, in particular to a light source module structure capable of providing uniform light.

Referring to FIG. 1 , the liquid crystal display 1 is mainly composed of a liquid crystal display module 11 at the front end and a backlight module 12 at the back end. The backlight module is used to provide light to the liquid crystal panel.

The backlight module 12 includes at least a flexible circuit board 121 and a plurality of light sources 122 and a light guide plate 124 disposed on the flexible circuit board 121. The light source 122 may be a cold cathode fluorescent tube or a light emitting diode. However, generally, the luminance directly above each light source 122 is generally higher, and the area between the adjacent two light sources is lower in luminance. Therefore, a bright grain is generated in the region directly above the light source 122 of the light guide plate 124, and corresponding The upper area between the adjacent two light sources may generate dark lines, so the light provided by the backlight module 12 may be uneven, which will affect the display quality of the liquid crystal display.

According to the above, development of a backlight module which can provide a uniform surface light source without generating a lamp mura is a technology which is desired to be developed in the related industry.

In view of the above, the present invention provides a light source module structure including a light emitting element for projecting light and a flexible circuit board, wherein the flexible circuit board has a first region in which the light emitting element is disposed, and a second portion that is substantially perpendicularly connected to the first region. The region and the plurality of third regions for reflecting the light of the light emitting elements and respectively connected to the two sides of the second region.

The invention also provides a light source module structure, comprising: a light-emitting element and a reflector for projecting light, wherein the reflector has a first region, a second region substantially perpendicularly connected to the first region, and a light-emitting element for reflecting The light rays are respectively connected to the plurality of third regions on the two sides of the second region.

The light source module structure disclosed in the present invention comprises a plurality of third regions, and the third region is directly formed by a flexible circuit board or a reflective cover, and can uniformly and uniformly project light to the liquid crystal display panel, thereby providing a uniform light source and avoiding generation of clouds. The pattern phenomenon enhances the display effect of the liquid crystal display device.

The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art.

Referring to FIG. 2, a liquid crystal display device 2 according to a first embodiment of the present invention is disclosed, wherein an arrow symbol indicates a light projection direction. The liquid crystal display device 2 is mainly composed of a panel module 2a and a light source module structure 2b. The panel module 2a can have a thin film transistor array substrate, a liquid crystal layer, an alignment film, a color filter substrate, a common electrode, a polarizer and a driving integrated circuit, and the components of the panel module 2a are not shown. The drawings are only illustrative and the invention is not limited thereto.

Referring to FIG. 3A, the light source module structure 2b is mainly composed of a light-emitting element 21, a flexible circuit board 23 and a light guide plate 25. The light guide plate 25 transmits light to the distal end by using the principle of total reflection. In addition, the light source module structure 2 may further include other constituent elements such as a printed circuit board (not shown) and a heat sink (not shown).

The light-emitting element 21 is configured to project light, thereby providing a light source required for the panel module 2a to display an image. The light-emitting element 21 can be a light-emitting diode. However, the shape and structure of the light-emitting element 21 shown in the figure are merely exemplary, and the present invention is not limited thereto.

The flexible circuit board 23 can be roughly divided into a first area 231, a second area 233, and a plurality of third areas 235.

The first region 231 is provided with a circuit and is used to set the light-emitting element 21. Furthermore, the first region 231 is a plurality of layers, and at least includes a surface protective layer 22a, a copper layer 22b and a base layer 22c.

The second region 233 is substantially perpendicularly connected to the first region 231 and can be a plurality of layers including a surface protective layer 22a, a copper layer 22b and a base layer 22c or a single layer plate, and only includes the surface protective layer 22a.

The plurality of third regions 235 are single-layered plates, and only include the surface protective layer 22a, and are respectively connected to the two sides of the second region 233 for reflecting the light projected by the light-emitting element 21, so that the light can be uniformly projected to Light guide plate 25. Secondly, the second region 233 and the third region 235 are substantially at right angles or obtuse angles, and the angle between them can be adjusted according to the brightness of the light projected by the light-emitting element 21. In addition, each third region 235 can be coupled to a third region 235 of another light source module structure, as shown in FIG. 3B.

On the other hand, the liquid crystal display device 2 further has a reflective cover 29 for carrying the above-mentioned light source module structure 2b and for reflecting light, as shown in FIG. 3C.

In the above, the plate structure of the first region 231, the second region 233, and the plurality of third regions 235 is as shown in FIGS. 4A to 4E.

The first region 231 disclosed in FIGS. 4A and 4B has a surface protective layer 22a, a copper layer 22b and a base layer 22c, and the second region 233 and the plurality of third regions 235 have a surface protective layer 22a, and the first region 231 The surface protective layer 22a is integrally formed with the second region 233 and the surface protective layer 22a of the plurality of third regions 235.

The first region 231 disclosed in FIGS. 4C and 4D has a surface protective layer 22a, a copper layer 22b and a base layer 22c, and the second region 233 and the plurality of third regions 235 have a surface protective layer 22a, and the second region 233 and the plural number The three regions 235 are integrally formed, but the second region 233 and the plurality of third regions 235 are additionally disposed on one side of the surface of the surface protective layer 22a of the first region 231.

The first region 231 disclosed in FIG. 4E has a surface protective layer 22a, a copper layer 22b and a base layer 22c, the second region 233 has a surface protective layer 22a, a copper layer 22b and a base layer 22c, and the plurality of third regions 235 have a surface protective layer. 22a, and the surface protective layer 22a of the first region 231 is integrally formed with the second region 233 and the surface protective layer 22a of the plurality of third regions 235.

The number of layers and the material of the plate structure of the first region 231, the second region 233, and the plurality of third regions 235 are merely exemplified, and may be designed as different layers and other materials, and may further include an adhesive layer. The present invention is not limited thereto, such as a polyimide layer or the like.

Referring to FIG. 5A, the light source module structure 2b disclosed in the second embodiment of the present invention is disclosed. The light source module structure 2b of the present embodiment is as described in the first embodiment, but the light source module structure 2b is The flexible circuit board 23 has a first region 231, a second region 233, a plurality of third regions 235 and a fourth region 237, wherein only the fourth region 237 of the light source module structure 2b of the present embodiment is different from the first embodiment, The components disclosed in the first embodiment are not described herein again.

The fourth region 237 is connected to the second region 233 and extends toward the light-emitting element 21 and is substantially parallel to the first region 231 for reflecting light of the light-emitting element to prevent light from escaping to prevent light from being completely projected onto the panel. The case of module 2a. The fourth region 237 is a single-layer plate body, and includes only the surface protective layer 22a, and is integrally formed with the two regions 233 and the plurality of third regions 235.

The surfaces of the plurality of third regions 235 and the fourth regions 237 of the embodiment can respectively have a third reflective layer 232 and a fourth reflective layer 234, as shown in FIGS. 5B and 5C. The third reflective layer 232 and the fourth reflective layer 234 have the characteristics of reflecting light, and can include: aluminum, silver, molybdenum, titanium, chromium, platinum, palladium, gold, titanium dioxide, cerium oxide, aluminum telluride (AlNd). Or other yellowing resistant heat resistant white reflective paint and any combination of the above. However, the above materials are merely illustrative, and the invention is not limited thereto.

Referring to FIG. 6A and FIG. 6B, the light source module structure 2b disclosed in the third embodiment of the present invention is disclosed. The light source module structure 2b of the present embodiment is as described in the first embodiment or the second embodiment. However, the flexible circuit board 23 of the present embodiment further has a fifth area 239.

The fifth region 239 is connected to the first region 231 and is located at a side of a third region 235 for connecting the connector 27. The connector 27 is used for electrically connecting other electronic components (not shown). The electronic component may be the panel module 2a of the first embodiment. However, the panel module 2a is merely an example, and the present invention does not This is limited.

Please refer to FIG. 7A, which discloses a light source module structure 3b according to a fourth embodiment of the present invention, which is mainly composed of a light-emitting element 31, a flexible circuit board 33 and a reflection cover 35.

The light-emitting element 31 is configured to project light and provide a light source required for the panel module 2a to display an image. The light-emitting element 31 can be a light-emitting diode. However, the shape and structure of the light-emitting element 31 shown in the figure are merely exemplary, and the present invention is not limited thereto.

The flexible circuit board 33 is provided with a circuit layout and is used to provide the light-emitting elements 31.

The reflector 35 is configured to reflect light and carry the light-emitting element 31 and the flexible circuit board 33, and has a first region 351, a second region 353, and a plurality of third regions 355.

The first region 351 has a surface for providing a flexible circuit board 33.

The second region 353 is substantially vertically connected to the first region 351.

The plurality of third regions 355 are respectively connected to the second region 353 for reflecting the light of the light-emitting element 31. The second region 353 and the third region 355 are substantially at right angles or obtuse angles with each other, and the angle between them can be adjusted according to the light width projected by the light-emitting element 31. Furthermore, the second region 353 and the third region 355 are originally planar, and the third region 355 is protruded from the plane by a press method. In addition, each of the third regions 355 can be connected to the third region 355 of the other light source module structure 3b, as shown in FIG. 7B. In the embodiment, the reflector 35 originally has the function of reflecting light, and the third region 355 can further enhance the effect of reflecting light.

On the other hand, the surface of the third region 355 can be coated with a paint (not shown) having the property of reflecting light such as aluminum, silver, molybdenum, titanium, chromium, platinum, palladium, gold, titanium dioxide, or the like. Cerium oxide, aluminum telluride (AlNd) or other yellowish-resistant and heat-resistant white reflective paint and any combination of the above. However, the above materials are merely illustrative, and the invention is not limited thereto.

According to the above, the light source module structure disclosed in the present invention can provide a uniform surface light source, and the flexible circuit board and the reflector cover of the light source module structure have a structure for reflecting light, wherein the flexible circuit board is not only used to set the light emitting element, and The system can directly form a plurality of third and fourth regions for reflecting light. Furthermore, the reflector of the present invention can form a plurality of third regions for reflecting light in a stamping manner, wherein the plurality of third regions can uniformly project light of the light-emitting elements to the panel module, and the fourth region can reflect the light-emitting elements The light prevents the light from escaping to prevent the light from being completely projected onto the panel module, so that the unevenness of the light of the light-emitting element can be avoided and the moiré phenomenon is generated, thereby improving the display of the liquid crystal display device. effect.

In addition, in the present invention, the third region and the fourth region for reflecting light are integrally formed by a flexible circuit board or a reflector, so that the manufacturing cost of the product can be reduced without additionally adding component materials.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

1. . . LCD Monitor

11. . . Liquid crystal display module

12. . . Backlight module

121. . . Flexible circuit board

122. . . light source

124. . . Light guide

2. . . Liquid crystal display device

2a. . . Panel module

2b. . . Light source module structure

twenty one. . . Light-emitting element

22a. . . Surface protection layer

22b. . . Copper layer

22c. . . Base layer

twenty three. . . Flexible circuit board

231. . . First area

232. . . Third reflective layer

233. . . Second area

234. . . Fourth reflective layer

235. . . Third area

237. . . Fourth area

239. . . Fifth area

25. . . Light guide

27. . . Connector

29. . . Reflector

3b. . . Light source module structure

31. . . Light-emitting element

33. . . Flexible circuit board

35. . . Reflector

351. . . First area

353. . . Second area

355. . . Third area

FIG. 1 is a schematic view showing the appearance of a liquid crystal display device disclosed in the prior art.

FIG. 2 is a schematic diagram of the appearance of a liquid crystal display device according to a first embodiment of the present invention.

3A and 3B are schematic diagrams showing the appearance of a light source module structure according to a first embodiment of the present invention.

FIG. 3C is a schematic cross-sectional view showing the structure of a light source module according to a first embodiment of the present invention, in which a reflective cover is disclosed.

4A to 4E are schematic cross-sectional views showing a flexible circuit board structure of a light source module according to a first embodiment of the present invention.

FIG. 5A is a schematic diagram of the appearance of a light source module structure according to a second embodiment of the present invention.

5B and 5C are schematic diagrams showing the appearance of a light source module structure according to a second embodiment of the present invention, in which a third reflective layer and a fourth reflective layer are disclosed.

6A and 6B are schematic diagrams showing the appearance of a light source module structure according to a third embodiment of the present invention.

7A and 7B are schematic diagrams showing the appearance of a light source module structure according to a fourth embodiment of the present invention.

2b. . . Light source module structure

twenty one. . . Light-emitting element

twenty three. . . Flexible circuit board

231. . . First area

232. . . Third reflective layer

233. . . Second area

234. . . Fourth reflective layer

235. . . Third area

237. . . Fourth area

Claims (16)

A light source module structure comprising: a light emitting element for projecting a light; and a flexible circuit board comprising: a first area, the light emitting element is disposed; and a second area substantially perpendicularly connected to the first area; The plurality of third regions are respectively connected to two sides of the second region for reflecting the light of the light emitting element. The light source module structure of claim 1, wherein the flexible circuit board further comprises: a fourth area connected to the second area and extending toward the light emitting element for reflecting the light of the light emitting element. The light source module structure of claim 2, wherein the fourth area is a single layer board. The light source module structure of claim 2, wherein the fourth region comprises a fourth reflective layer. The light source module structure of claim 1, wherein the first area is a plurality of layers. The light source module structure of claim 1, wherein the second area is a single layer board or a plurality of layer boards. The light source module structure of claim 1, wherein each of the third regions is a single layer plate. The light source module structure of claim 1, wherein each of the third regions comprises a third reflective layer. The light source module structure of claim 1, wherein each of the third area and the second area is substantially at a right angle or an obtuse angle. The light source module structure of claim 1, wherein each of the third regions is connected to the third region of the other light source module structure. The light source module structure of claim 1, wherein the flexible circuit board further comprises: a fifth area connected to the first area and located at a side of one of the third areas for connecting a connector. A light source module structure comprising: a light emitting element for projecting a light; and a reflective cover comprising: a first area; a second area substantially perpendicularly connected to the first area; and a plurality of third areas, respectively Connected to two sides of the second area for reflecting the light of the light-emitting element. The light source module structure of claim 12, wherein each of the third region and the second region is substantially at a right angle or an obtuse angle. The light source module structure of claim 12, wherein each of the third regions is connected to the third region of the other light source module structure. The light source module structure of claim 12, wherein the third area and the second area are a plane, and the third area protrudes from the plane via stamping. The light source module structure of claim 12, further comprising a flexible circuit board for setting the light emitting element and located in the first area.