CN102287706A - Light source module structure - Google Patents

Abstract

A light source module structure comprises a light emitting element and a flexible circuit board, wherein the light emitting element is used for projecting light, the flexible circuit board is provided with a first area used for arranging the light emitting element, a second area which is virtually and vertically connected with the first area, and a plurality of third areas which are used for reflecting the light of the light emitting element and are respectively connected with two sides of the second area, the third areas can uniformly and intensively project the light to a liquid crystal display panel, so that a uniform light source is provided for the liquid crystal display panel, the phenomenon of moire is avoided, and the display effect of a liquid crystal display device is improved.

Description

Light source module structure

technical field

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

Background technique

Please refer to FIG. 1 , the liquid crystal display 1 is mainly composed of a front liquid crystal display module 11 and a rear backlight module 12 , wherein the backlight module is used to provide light to the liquid crystal panel.

The backlight module 12 at least includes a flexible circuit board 121 , a plurality of light sources 122 arranged on the flexible circuit board 121 and a light guide plate 124 , wherein the light sources 122 can be CCFLs or LEDs. However, usually the luminance directly above each light source 122 is usually relatively high, and the area between two adjacent light sources is a lower luminance area, so bright stripes will be generated in the area directly above the light source 122 corresponding to the light guide plate 124, Dark stripes will be generated in the upper area corresponding to the two adjacent light sources, so the light provided by the backlight module 12 will be uneven, which will affect the display quality of the liquid crystal display.

According to the above, developing a backlight module that can provide a uniform surface light source without producing lamp mura is a technology that related industries are eager to develop.

Contents of the invention

In view of this, the present invention proposes 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 area where the light-emitting element is disposed, and is substantially vertically connected to the first area. The second area and a plurality of third areas are used to reflect the light of the light-emitting element and are respectively connected to two sides of the second area.

The present invention also proposes a light source module structure, including: a light-emitting element for projecting light and a reflector, wherein the reflector has a first region, a second region substantially vertically connected to the first region, and a reflector for reflecting the light-emitting element The light is also respectively connected to multiple third areas on two sides of the second area.

The structure of the light source module disclosed in the present invention includes a plurality of third regions. The third regions are directly formed by flexible circuit boards or reflectors, which can uniformly and centrally project light onto the liquid crystal display panel, thereby providing a uniform light source and avoiding cloud formation. moire phenomenon, thereby improving the display effect of the liquid crystal display device.

The detailed features and advantages of the present invention are described in detail below in the embodiments, the content of which is sufficient for any person of ordinary skill in the art to understand the technical content of the present invention and implement it accordingly, and according to the contents disclosed in this specification, claims and accompanying drawings , any person of ordinary skill in the art can easily understand the related objects and advantages of the present invention.

Description of drawings

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

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

3A and 3B are schematic appearance diagrams of the structure of the light source module disclosed in the first embodiment of the present invention.

3C is a schematic cross-sectional view of the structure of the light source module disclosed in the first embodiment of the present invention, in which the reflection cover is revealed.

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

FIG. 5A is a schematic view of the appearance of the structure of the light source module disclosed in the second embodiment of the present invention.

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

6A and 6B are schematic appearance diagrams of the structure of the light source module disclosed in the third embodiment of the present invention.

7A and 7B are schematic appearance diagrams of the structure of the light source module disclosed in the fourth embodiment of the present invention.

Wherein, the reference signs are explained as follows:

1 .................... LCD display

11 ..................... LCD module

12 ..................... Backlight module

121 ..................... flexible circuit board

122 ..................... Light source

124 ..................... Light guide plate

2 ..................... Liquid crystal display device

2a .................... Panel module

2b ..................... Light source module structure

21 ..................... Light-emitting elements

22a ..................... Surface protective layer

22b ..................... Copper layer

22c ..................... Basal layer

23 ..................... Flexible printed circuit board

231 ..................... The first area

232 ..................... The third reflective layer

233 ..................... the second area

234 ..................... The fourth reflective layer

235 ..................... The third area

237 ..................... The fourth area

239 ..................... Fifth area

25 ..................... Light guide plate

27 ..................... Connector

29 ..................... Reflector

3b ..................... Light source module structure

31 ..................... Light-emitting elements

33 ..................... Flexible printed circuit board

35 ..................... Reflector

351 ..................... The first area

353 ..................... the second area

355 ..................... The third area

Detailed ways

Please refer to FIG. 2 , which discloses the liquid crystal display device 2 disclosed in the first embodiment of the present invention, wherein the arrows indicate the projecting direction of light. The liquid crystal display device 2 is mainly composed of a panel module 2a and a light source module structure 2b. Among them, the panel module 2a can have components such as a thin film transistor array substrate, a liquid crystal layer, an alignment film, a color filter substrate, a common electrode, a polarizer, and a driver integrated circuit. The components of the above-mentioned panel module 2a are not shown in the figure and are only examples , the present invention is not limited thereto.

Please refer to FIG. 3A , the light source module structure 2 b is mainly composed of a light emitting element 21 , a flexible circuit board 23 and a light guide plate 25 , wherein the light guide plate 25 uses the principle of total reflection to transmit light to the remote end. In addition, the above-mentioned light source module structure 2 may also include other components such as a printed circuit board (not shown) and a heat sink (not shown).

The light emitting element 21 is used for projecting light, thereby providing the light source required for the panel module 2a to display images. The light-emitting element 21 can be a light-emitting diode, but the shape and structure of the light-emitting element 21 shown in the figure is only an example, 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 area 231 is arranged with a circuit and is used for disposing the light emitting element 21 . In addition, the first region 231 is a multi-layer board body, which at least includes the surface protection layer 22a, the copper layer 22b and the base layer 22c.

The second area 233 is substantially vertically connected to the first area 231, and it can be a multi-layer board including the surface protection layer 22a, the copper layer 22b and the base layer 22c or a single-layer board including only the surface protection layer 22a.

A plurality of third regions 235 are single-layer boards, which only include the surface protection layer 22a, and are respectively connected to two sides of the second region 233 to reflect the light projected by the light-emitting element 21, so that the light can be evenly projected to the Light guide plate 25. Secondly, the above-mentioned second area 233 and the third area 235 are substantially at a right angle or an obtuse angle, and the angle between them can be adjusted according to the width of light projected by the light emitting element 21 . In addition, each third area 235 can be connected to the third area 235 of another light source module structure, as shown in FIG. 3B .

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

Based on the above, the board structures of the first region 231 , the second region 233 and the plurality of third regions 235 are shown in FIGS. 4A to 4E .

Wherein, the first region 231 disclosed in FIG. 4A and FIG. 4B has a surface protection layer 22a, a copper layer 22b and a base layer 22c, while the second region 233 and a plurality of third regions 235 have a surface protection layer 22a, and the first region 231 The surface protection layer 22a of the second area 233 and the surface protection layer 22a of the plurality of third areas 235 are integrally formed.

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

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

The number of layers and materials included in the plate structure of the first region 231, the second region 233, and the plurality of third regions 235 are only examples, which can be designed with different layers and other materials, and can also include bonding. Agent layer and polyimide layer, etc., the present invention is not limited thereto.

Please refer to FIG. 5A, which discloses the light source module structure 2b disclosed in the second embodiment of the present invention. The light source module structure 2b of this embodiment is as described in the first embodiment. The flexible circuit board 23 of the light source module structure 2b has The first area 231, the second area 233, a plurality of third areas 235 and fourth areas 237, the light source module structure 2b of this embodiment is only different from the first embodiment in the fourth area 237, so it is different from the first embodiment The disclosed composition will not be repeated here.

The fourth area 237 is connected to the second area 233 and extends toward the light-emitting element 21 and is substantially parallel to the first area 231, which is used to reflect the light of the light-emitting element and prevent the light from scattering so as to prevent the light from being completely projected to the panel. The case of module 2a. Wherein, the above-mentioned fourth area 237 is a single-layer plate body, only includes the surface protection layer 22a, and is integrally formed with the second area 233 and the plurality of third areas 235 .

The surfaces of the plurality of third regions 235 and fourth regions 237 in this embodiment can respectively have a third reflective layer 232 and a fourth reflective layer 234 , as shown in FIG. 5B and FIG. 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, silicon dioxide, aluminum neodymium (AlNd) or Other anti-yellowing and heat-resistant white reflective paints and any combination of the above materials. The above materials are only examples, and the present invention is not limited thereto.

Please refer to FIG. 6A and FIG. 6B, which disclose the light source module structure 2b disclosed in the third embodiment of the present invention. The light source module structure 2b of this embodiment is as described in the first embodiment or the second embodiment. This embodiment The flexible circuit board 23 also has a fifth area 239 .

The fifth area 239 is connected to the first area 231 and located on a side of one of the third areas 235 for connecting the connector 27 . The above-mentioned connector 27 is used to electrically connect other electronic components (not shown), and the above-mentioned electronic component can be the panel module 2a described in the first embodiment, and the above-mentioned panel module 2a is only an example, and the present invention is not limited thereto. .

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

The light emitting element 31 is used for projecting light and providing the light source required by the panel module 2a for displaying images. The light-emitting element 31 can be a light-emitting diode, but the shape and structure of the light-emitting element 31 shown in the figure is only an example, and the present invention is not limited thereto.

The flexible circuit board 33 is provided with a circuit layout and is used for disposing the light emitting element 31 .

The reflection cover 35 is used for reflecting light and carrying the light emitting element 31 and the flexible circuit board 33 , and has a first area 351 , a second area 353 and a plurality of third areas 355 .

The surface of the first area 351 is used for disposing the flexible circuit board 33 .

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

A plurality of third regions 355 are respectively connected to the second region 353 for reflecting the light of the light emitting element 31 . Wherein, the second region 353 and the third region 355 are substantially at right angles or obtuse angles to each other, and the angle between them can be adjusted according to the width of the light projected by the light emitting element 31 . In addition, the second area 353 and the third area 355 are flat, and the third area 355 protrudes from the plane by punching. In addition, each third area 355 can be connected to the third area 355 of another light source module structure 3b, as shown in FIG. 7B . In this embodiment, the reflection cover 35 originally has the function of reflecting light, and the effect of reflecting light can be further improved by setting the third region 355 .

On the other hand, the surface of the third region 355 can be coated with a paint (not shown) that reflects light, such as aluminum, silver, molybdenum, titanium, chromium, platinum, palladium, gold, titanium dioxide, Silicon oxide, aluminum neodymium (AlNd) or other yellowing and heat-resistant white reflective paints and any combination of the above materials. The above materials are only examples, and the present invention is not limited thereto.

According to the above, the light source module structure disclosed by the present invention can provide a uniform surface light source. The flexible circuit board and the reflector of the light source module structure have a light-reflecting structure. A plurality of third regions and fourth regions for reflecting light are directly formed. In addition, the reflection cover of the present invention can form a plurality of third regions for reflecting light by stamping, wherein the plurality of third regions can make the light of the light-emitting element evenly projected to the panel module, and the fourth region can reflect the light-emitting element To prevent the light from escaping and avoid the situation that the light cannot be completely projected to the panel module, in this way, it can avoid the phenomenon of moiré caused by the uneven brightness of the light of the light-emitting element, thereby improving the display of the liquid crystal display device Effect.

In addition, in the present invention, the plurality of third regions and fourth regions for reflecting light are integrally formed with a flexible circuit board or a reflector, thus reducing the production cost of the product without adding additional component materials.

Although the technical content of the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention, and any changes and modifications made by those skilled in the art without departing from the spirit of the present invention shall be covered by this disclosure. Therefore, the scope of protection of the present invention should be determined by the scope defined by the appended claims.

Claims (16)

1. A light source module structure, comprising: a light emitting element projecting a light; and A flexible circuit board, including: a first area where the light-emitting element is arranged; a second area substantially vertically connected to the first area; and A plurality of third regions are respectively connected to two sides of the second region for reflecting the light of the light emitting element. 2. The light source module structure according to claim 1, wherein the flexible circuit board further comprises: A fourth area is connected to the second area and extended toward the light emitting element, for reflecting the light of the light emitting element. 3. The light source module structure according to claim 2, wherein the fourth region is a single-layer board. 4. The light source module structure of claim 2, wherein the fourth region comprises a fourth reflective layer. 5. The light source module structure according to claim 1, wherein the first region is a multi-layer board. 6. The light source module structure according to claim 1, wherein the second region is a single-layer board or a multi-layer board. 7. The light source module structure according to claim 1, wherein each of the third regions is a single-layer board. 8. The light source module structure according to claim 1, wherein each of the third regions comprises a third reflective layer. 9. The light source module structure according to claim 1, wherein each of the third regions and the second region substantially form a right angle or an obtuse angle. 10. The light source module structure according to claim 1, wherein each of the third regions is connected to the third region of another light source module structure. 11. The light source module structure according to claim 1, wherein the flexible circuit board further comprises: A fifth area is connected to the first area and is located at a side of one of the third areas for connecting with a connector. 12. A light source module structure, comprising: a light emitting element projecting a light; and A reflector, comprising: - the first area; a second area substantially vertically connected to the first area; and A plurality of third regions are respectively connected to two sides of the second region for reflecting the light of the light emitting element. 13. The light source module structure according to claim 12, wherein each of the third regions and the second region substantially form a right angle or an obtuse angle. 14. The light source module structure according to claim 12, wherein each of the third regions is connected to the third region of another light source module structure. 15. The light source module structure according to claim 12, wherein the third area and the second area are on a plane, and the third area protrudes from the plane by stamping. 16. The light source module structure according to claim 12, further comprising a flexible circuit board, the flexible circuit board is used for disposing the light emitting element and is located in the first region.

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