CN201210209Y

CN201210209Y - Diffusion light-gathering sheet of LCD backlight module

Info

Publication number: CN201210209Y
Application number: CNU2008200029692U
Authority: CN
Inventors: 蔡曜徽; 刘铭璿; 林哲弘; 谢浩森; 邱奕荣
Original assignee: Prodisc Technology Inc
Current assignee: Prodisc Technology Inc
Priority date: 2007-10-10
Filing date: 2008-01-30
Publication date: 2009-03-18
Anticipated expiration: 2018-01-30

Abstract

The utility model relates to an optics field discloses a LCD backlight unit's diffusion light-gathering piece, mainly include a substrate of utensil light transmissivity, this substrate has first, the second surface, and be formed with the light-collecting layer on the first surface of substrate, and form a light-gathering piece, and mix the diffusion particle in this light-gathering piece, make the light beam that gets into the substrate can be via the continuous refraction of diffusion particle, in order to reach the homogenization of light source, and the light-collecting layer that sees through the substrate surface assembles the light source, reach the efficiency of homogeneous light and spotlight simultaneously.

Description

The diffusing lens of LCD module backlight

Technical field

The utility model relates to the diffusing lens of a kind of LCD module backlight.

Background technology

See also shown in Figure 1, it is the blooming piece collocation mode in the existing module backlight 6, it mainly is to include a light guide plate 61, stacked down in regular turn diffusion sheet 62 on the surface of this light guide plate 61, concentration piece 63 reaches goes up diffusion sheet 64, when light source enters light guide plate 61, spread by following 62 pairs of light sources of diffusion sheet, to promote the homogeneity of light beam, otherwise the user can not feel well because the Luminance Distribution of screen is uneven, then, by concentration piece 63 light is concentrated to the center to promote center brightness, and can use multi-disc concentration piece 63 to promote brightness, last light source sees through last diffusion sheet 64, and diffusion sheet 64 can prevent the prism structure scratch liquid-crystalline glasses on the concentration piece 63 on this, and the vision ripple (Pixels Moire) that alleviates the pixel generation of concentration piece 63 and liquid-crystalline glasses.

Though existing module backlight 6 is by last diffusion sheet 64, the down use of diffusion sheet 62 and concentration piece 63, but reach all effects of light and optically focused, but it still has following defective on using:

1, because the last diffusion sheet 64 of existing module 6 backlight, following diffusion sheet 62 and concentration piece 63 are made respectively, this can cause cost of manufacture to increase relatively.

2, existing module backlight 6 needs will descend in regular turn diffusion sheet 62, concentration piece 63 and goes up diffusion sheet 64 to overlay on the light guide plate 61 when assembling, makes it need long assembling man-hour, does not meet economic benefit.

The utility model content

It is a kind of compound with diffusion sheet and concentration piece that the purpose of this utility model is to provide, only need a slice blooming piece, can realize spreading the optical function with optically focused simultaneously, and can reduce the vision ripple, can also effectively reduce the diffusing lens of cost cost.

For achieving the above object, the utility model by the following technical solutions:

The diffusing lens of a kind of LCD module backlight comprises: a base material, and this base material has first surface and second surface, has been shaped as a light-collecting layer on this first surface; Several diffusion particles, this diffusion particle are incorporated in described light-collecting layer or the described base material.

The diffusing lens of a kind of LCD module backlight comprises: a base material, and this base material has first surface and second surface, has been shaped as a light-collecting layer on this first surface, and has been shaped as a diffusion layer on the second surface; Several diffusion particles, this diffusion particle is incorporated in described light-collecting layer or the base material.

The diffusing lens of a kind of LCD module backlight comprises: a base material, and this base material has first surface and second surface, has been shaped as a light-collecting layer on this first surface, and has been shaped as a diffusion layer on the second surface; Several diffusion particles, this diffusion particle be incorporated into described diffusion layer in, make the diffusing lens of this LCD module backlight have scope, and the brightness decay that penetrates is less than 2% at 3% to 18% mist degree.

The diffusing lens of a kind of LCD module backlight comprises: a base material, and this base material has first surface and second surface, and the diffusion layer that is shaped on this first surface has been shaped as a light-collecting layer on this diffusion layer; Several diffusion particles, this diffusion particle are incorporated in described light-collecting layer or base material or the diffusion layer.

The diffusing lens of a kind of LCD module backlight comprises: a base material, and this base material has first surface and second surface, and the diffusion layer that is shaped on this first surface has been shaped as a light-collecting layer, and has been shaped as a diffusion layer on the second surface on this diffusion layer; Several diffusion particles, this diffusion particle are incorporated in described light-collecting layer or base material or the diffusion layer.

The diffusing lens of LCD provided by the utility model module backlight compared with prior art, also has following advantage:

1, the utility model is that diffusion sheet and concentration piece is compound, only needs a slice blooming piece, can have the optical function of diffusion and optically focused simultaneously, also has the effect that reduces vision ripple (Moire).

2,, only need a slice blooming piece can realize above-mentioned multiple optical performance, so the utility model also can effectively reduce the cost cost because the utility model is that diffusion sheet and concentration piece is compound.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute to improper qualification of the present utility model, in the accompanying drawings:

Fig. 1 is an existing LCD module synoptic diagram backlight;

Fig. 2 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 1;

Fig. 3 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 2;

Fig. 4 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 3;

Fig. 5 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 4;

Fig. 6 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 5;

Fig. 7 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 6;

Fig. 8 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 7;

Fig. 9 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 8;

Figure 10 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 9;

Figure 11 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 10;

Figure 12 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 11;

Figure 13 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 12;

Figure 14 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 13;

Figure 15 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 14;

Figure 16 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 15;

Figure 17 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 16;

Figure 18 is the synoptic diagram of diffusing lens of the LCD module backlight of the utility model embodiment 17.

The figure number explanation:

1: base material, 11: first surface, 12: second surface, 2: light-collecting layer, 3: diffusion particle, 4: diffusion layer, 5: diffusion layer, 6: module backlight, 61: light guide plate, 62: following diffusion sheet, 63: concentration piece, 64: go up diffusion sheet.

Embodiment

Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.

Embodiment 1:

Fig. 2 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, and as shown, the diffusing lens of this LCD module backlight mainly includes:

One base material 1, this base material 1 is to be made by light-transmitting materials, makes it have light transmission, and this base material 1 has first surface 11 and second surface 12;

One light-collecting layer 2, this light-collecting layer 2 are to engage with the first surface 11 of base material 1, and this light-collecting layer 2 can be prism facets;

Several diffusion particles 3, these several diffusion particles 3 are to mix in the light-collecting layer, and this diffusion particle 3 can be silicon dioxide;

When light enters in the base material 1, promptly can be subjected to diffusion particle 3 and constantly reflect, and evenly scattering, to reach all purposes of light, the light of this even scattering and can be subjected to converging of light-collecting layer 2 so that light luminance is promoted towards the center, and then reaches all effects of light and optically focused.

Embodiment 2:

Fig. 3 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the diffusing lens of the LCD module backlight of present embodiment and the difference part of Fig. 2 are, this diffusion particle 3 can mix in base material 1 and the light-collecting layer 2 simultaneously, makes base material 1 and light-collecting layer 2 all have all effects of light.

Embodiment 3:

Fig. 4 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, the second surface 12 of this base material 1 can form a diffusion layer 4, and diffusion particle 3 mixed light-collecting layer 2 simultaneously, in base material 1 and the diffusion layer 4, make base material 1, light-collecting layer 2 and diffusion layer 4 all have equal light effect, and this diffusion layer 4 also can have the effect of following diffusion sheet.

Embodiment 4:

Fig. 5 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, the first surface 11 of this base material 1 forms a diffusion layer 5 earlier, and on this diffusion layer 5, be formed with a light-collecting layer 2, and diffusion particle 3 only mixed in the diffusion layer 5, make diffusion layer 5 have equal light effect, and this diffusion layer 5 can have the effect of following diffusion sheet.

Embodiment 5:

Fig. 6 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, form a diffusion layer 4 on the second surface 12 of this base material 1, and diffusion particle 3 only mixed in the diffusion layer 4, make diffusion layer 4 have equal light effect, and this diffusion layer 4 can have the effect of following diffusion sheet, cause the diffusing lens of this LCD module backlight to have scope, and the brightness decay that penetrates is less than 2% at 5% to 11% mist degree.

Embodiment 6:

Fig. 7 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, all be formed with a

diffusion layer

4,5 on the second surface 12 of this base material 1 and the first surface 11, and diffusion particle 3 mixed in two

diffusion layers

4,5, make two

diffusion layers

4,5 all have equal light effect, and this two

diffusion layer

4,5 all can have the effect of following diffusion sheet.

Embodiment 7:

Fig. 8 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is that this diffusion particle 3 only mixes in the base material 1, make base material 1 have equal light effect, and this base material 1 can have the effect of following diffusion sheet.

Embodiment 8:

Fig. 9 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, form a diffusion layer 4 on the second surface 12 of this base material 1, and diffusion particle 3 only mixed in diffusion layer 4 and the base material 1, make diffusion layer 4 and base material 1 all have equal light effect, and this diffusion layer and base material can have the effect of following diffusion sheet.

Embodiment 9:

Figure 10 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, the first surface 11 of this base material 1 forms a diffusion layer 5 earlier, and on this diffusion layer 5, form a light-collecting layer 2, and diffusion particle 3 only mixed in diffusion layer 5 and the base material 1, make diffusion layer 5 and base material 1 all have equal light effect, and this diffusion layer 5 and base material 1 can have the effect of following diffusion sheet.

Embodiment 10:

Figure 11 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, all be formed with a

diffusion layer

diffusion layers

4,5 and the base material 1, make two

diffusion layers

4,5 and base material 1 all have equal light effect, and this two

diffusion layer

4,5 and base material 1 all can have the effect of following diffusion sheet.

Embodiment 11:

Figure 12 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment; as shown; the difference part of itself and Fig. 2 is; form a light-collecting layer 2 on the first surface 11 of this base material 1; and be formed with a diffusion layer 4 on the second surface 12; and diffusion particle 3 mixed in light-collecting layer 2 and the diffusion layer 4; make light-collecting layer 2 and diffusion layer 4 have equal light effect; and lose protection for fear of light-collecting layer 2; so the high low head of prism of light-collecting layer 2 is strengthened; and higher prism vertex angle changed fillet by wedge angle, increasing scratch resistance, and then prolong the serviceable life of light-collecting layer 2.

Embodiment 12:

Figure 13 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment; as shown; the difference part of itself and Fig. 2 is, forms a light-collecting layer 2 on the first surface 11 of this base material 1, and diffusion particle 3 is mixed in the light-collecting layer 2; make light-collecting layer 2 have equal light effect; lose protection for fear of light-collecting layer 2, thus the high low head of prism of light-collecting layer 2 is strengthened, and higher prism vertex angle is changed fillet by wedge angle; with the increase scratch resistance, and then the serviceable life of prolongation light-collecting layer 2.

Embodiment 13:

Figure 14 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, form a light-collecting layer 2 on the first surface 11 of this base material 1, and be formed with a diffusion layer 4 on the second surface 12, and diffusion particle 3 is mixed in the diffusion layer 4, make diffusion layer 4 have equal light effect, cause the diffusing lens of this LCD module backlight to have scope, and the brightness decay that penetrates is less than 2% at 5% to 11% mist degree; And lose protection for fear of light-collecting layer 2, thus the high low head of prism of light-collecting layer 2 is strengthened, and higher prism vertex angle is changed fillet by wedge angle, with the increase scratch resistance, and then the serviceable life of prolongation light-collecting layer 2.

Embodiment 14:

Figure 15 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, the first surface 11 of this base material 1 forms a diffusion layer 5 earlier, and on this diffusion layer 5, be formed with a light-collecting layer 2, and diffusion particle 3 only mixed in the light-collecting layer 2, make light-collecting layer 2 have equal light effect.

Embodiment 15:

Figure 16 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, the first surface 11 of this base material 1 forms a diffusion layer 5 earlier, and on this diffusion layer 5, be formed with a light-collecting layer 2, and diffusion particle 3 only mixed in the base material 1, make base material 1 have equal light effect.

Embodiment 16:

Figure 17 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, all be formed with a

diffusion layer

4,5 on the second surface 12 of this base material 1 and the first surface 11, and on this diffusion layer 5, be formed with a light-collecting layer 2, and diffusion particle 3 mixed in the light-collecting layer 2, make light-collecting layer 2 have equal light effect.

Embodiment 17:

Figure 18 is the synoptic diagram of the diffusing lens of the LCD module backlight that provides of present embodiment, as shown, the difference part of itself and Fig. 2 is, all be formed with a

diffusion layer

4,5 on the second surface 12 of this base material 1 and the first surface 11, and on this diffusion layer 5, be formed with a light-collecting layer 2, and diffusion particle 3 mixed in the base material 1, make base material 1 have equal light effect.

In addition, the high low head prism facets of this light-collecting layer 2 is to be applicable among each above-mentioned embodiment, is not limited among Figure 12, Figure 13, the embodiment shown in Figure 14.

In addition, for making light diffusion usefulness preferable, the size of above-mentioned diffusion particle 3 is good surpassing 50 microns.

In addition, above-mentioned refractive index of mixing the diffusion particle 3 of base material 1 must differ more than 0.01 with the refractive index of base material 1, otherwise refractive index is too near losing diffusion function.

In addition, above-mentioned diffusion particle 3 is made for materials such as silicon dioxide (Silica), polymethylmethacrylate (PMMA), glass or plastic cement.

In addition, above-mentioned diffusion particle 3 can be penetrating type diffusion particle 3 or scatter-type diffusion particle 3.

The diffusing lens of LCD provided by the utility model module backlight, in the time of compared with prior art, it has more following advantage:

2, the utility model be except that can promoting the optical performance, and can effectively reduce the cost cost.

Above-listed detailed description is specifying at a possible embodiments of the present utility model; this embodiment is not in order to limit claim of the present utility model; allly do not break away from the equivalence that the utility model skill spirit does and implement or change, all should be contained in the protection domain of this case.

Claims

1, a kind of diffusion concentrating sheet of LCD backlight module, it is characterized in that, comprises:

A substrate, the substrate has a first surface and a second surface, and a light collecting layer is formed on the first surface;

Several diffusion particles, the diffusion particles are incorporated into the light collecting layer or the substrate.

2. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 1, wherein the base material is made of a light-transmitting material, and the base material has light-transmitting properties.

3. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 1, wherein the light-concentrating layer is a prism surface.

4. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 1, wherein the diffusing particles are made of silicon dioxide, polymethyl methacrylate, glass or plastic.

5. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 3, wherein the prism surface is provided with a height difference, and the upper prism vertex angle of the prism surface is rounded.

6. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 1, wherein the size of the diffusing particles is no more than 50 microns.

7. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 1, wherein the refractive index of the diffusing particles mixed into the substrate differs by more than 0.01 from the refractive index of the substrate.

8. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 1, wherein the diffusing particles are penetrating or scattering diffusing particles.

9. A diffusing and concentrating sheet for an LCD backlight module, characterized in that it comprises:

A substrate, the substrate has a first surface and a second surface, a light collecting layer is formed on the first surface, and a diffusion layer is formed on the second surface;

A plurality of diffusion particles, which are incorporated into the light-collecting layer or the substrate.

10. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 9, wherein the base material is made of a light-transmitting material, and the base material is light-transmitting.

11. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 9, wherein the light-concentrating layer is a prism surface.

12. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 9, wherein the diffusing particles are made of silicon dioxide, polymethyl methacrylate, glass or plastic.

13. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 11, wherein the prism surface is provided with a height difference, and the higher prism vertex angles of the prism surface are rounded.

14. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 9, wherein the diffusing particles are incorporated into the diffusing layer.

15. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 9, wherein the size of the diffusing particles is no more than 50 microns.

16. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 9, wherein the refractive index of the diffusing particles mixed into the substrate differs by more than 0.01 from the refractive index of the substrate.

17. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 9, wherein the diffusing particles are penetrating or scattering diffusing particles.

18. A diffusing and concentrating sheet for an LCD backlight module, characterized by comprising:

A plurality of diffusion particles, the diffusion particles are incorporated into the diffusion layer, so that the diffusion and light-concentrating sheet of the LCD backlight module has a haze ranging from 3% to 18%, and the brightness attenuation of penetration is less than 2%. .

19. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 18, wherein the base material is made of a light-transmitting material, and the base material is light-transmitting.

20. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 18, wherein the light-collecting layer is a prism surface.

21. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 18, wherein the diffusing particles are made of silicon dioxide, polymethyl methacrylate, glass or plastic.

22. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 20, wherein the prism surface is provided with a height difference, and the higher prism vertex angles of the prism surface are rounded.

23. The light-diffusing sheet for LCD backlight module according to claim 18, wherein the size of the diffusing particles is no more than 50 microns.

24. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 18, wherein the diffusing particles are penetrating or scattering diffusing particles.

25. A diffusing and concentrating sheet for an LCD backlight module, characterized by comprising:

A substrate, the substrate has a first surface and a second surface, a diffusion layer is formed on the first surface, and a light-collecting layer is formed on the diffusion layer;

A plurality of diffusion particles, the diffusion particles are incorporated into the light collecting layer or the base material or the diffusion layer.

26. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 25, wherein the base material is made of a light-transmitting material, and the base material has light-transmitting properties.

27. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 25, wherein the light-collecting layer is a prism surface.

28. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 25, wherein the diffusing particles are made of silicon dioxide, polymethyl methacrylate, glass or plastic.

29. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 27, wherein the prism surface is provided with a height difference, and the higher prism vertex angles of the prism surface are rounded.

30. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 25, wherein the size of the diffusing particles is no more than 50 microns.

31. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 25, wherein the refractive index of the diffusing particles mixed into the substrate differs by more than 0.01 from the refractive index of the substrate.

32. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 25, wherein the diffusing particles are penetrating or scattering diffusing particles.

33. A diffusing and concentrating sheet for an LCD backlight module, characterized by comprising:

A substrate, the substrate has a first surface and a second surface, a diffusion layer is formed on the first surface, a light collecting layer is formed on the diffusion layer, and a diffusion layer is formed on the second surface;

34. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 33, wherein the base material is made of a light-transmitting material, and the base material is light-transmitting.

35. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 33, wherein the light-collecting layer is a prism surface.

36. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 33, wherein the diffusing particles are made of silicon dioxide, polymethyl methacrylate, glass or plastic.

37. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 35, wherein the prism surface is provided with a height difference, and the higher prism vertex angles of the prism surface are rounded.

38. The light-diffusing and concentrating sheet of the LCD backlight module according to claim 33, wherein the size of the diffusing particles is no more than 50 microns.

39. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 33, wherein the refractive index of the diffusing particles mixed into the substrate differs by more than 0.01 from the refractive index of the substrate.

40. The light-diffusing and concentrating sheet of an LCD backlight module according to claim 33, wherein the diffusing particles are penetrating or scattering diffusing particles.