CN201051196Y - Light collecting assembly - Google Patents

Abstract

The utility model discloses a light harvesting subassembly comprises substrate, first refraction subassembly and the second refraction subassembly. The first refraction component is arranged above the substrate and provided with a plurality of lenses arranged on the first refraction component. Each of the lenses described above may be curved in shape. The second refraction component is positioned above the first refraction component and is provided with a plurality of convex blocks arranged on the second refraction component side by side.

Description

Light collecting components

technical field

The utility model relates to an optical assembly, in particular to an optical assembly with multiple reflective surfaces.

Background technique

The backlight module is one of the key components of the liquid crystal display panel. Because the liquid crystal itself does not emit light, it is necessary to use a backlight module to supply light so that the liquid crystal panel can display normal images with uniform brightness. The backlight module usually has a plurality of optical films, such as a diffusion sheet and a brightness enhancement film, which can increase the luminance of the outgoing light at the front view and make the distribution of the outgoing light more uniform.

FIG. 1 is a schematic diagram of a conventional brightness enhancing film. The brightness enhancement film 100 includes a substrate 102 and a set of protruding blocks 104 formed on the substrate 102 , and the shapes of the protruding blocks 104 are all linear structures. However, due to its periodic linear structure, the conventional protruding blocks 104 are prone to produce moiré effect with the liquid crystal pixels of the liquid crystal display, resulting in visual defects.

Utility model content

The technical problem to be solved by the utility model is to provide a light collecting component, which can not only improve the luminance of the liquid crystal display panel, but also reduce the moiré effect.

In order to achieve the above object, the utility model provides a light collecting component which is composed of a base material, a first refraction component and a second refraction component. Wherein, the first refraction component is located above the substrate, and the first refraction component has a plurality of lenses arranged thereon. The shape of each lens mentioned above can be curved. The second refraction component is located above the first refraction component, and the second refraction component has a plurality of protruding blocks arranged on it.

In order to achieve the above object, the utility model also provides a light collecting component which is composed of a base material, a first refraction component and a second refraction component. Wherein, the first refraction component is located above the substrate, and the first refraction component has a plurality of lenses. Each of the lenses described above may have an irregular profile. The second refraction component is located above the first refraction component, and the second refraction component has a plurality of protruding blocks arranged on it.

Therefore, using the light collecting assembly provided by the utility model has the following advantages:

(1) Since the utility model has the second refraction component and the first refraction component to exert the light-gathering effect, it can effectively increase the brightness of the backlight module;

(2) Since the lens of the present invention does not have a highly ordered structure, on the contrary, the brightening component formed by the present invention has a lower structural order, so the moiré effect can be greatly reduced compared with the prior art ;as well as

(3) There are more size parameters for users to fine-tune to achieve the optimal visual effect.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is the schematic diagram of existing light collecting assembly;

Fig. 2A is a schematic cross-sectional view of a light collecting assembly according to a preferred embodiment of the present invention;

FIG. 2B is a bottom view of the first refraction assembly 220 of FIG. 2A;

FIG. 3A is a partial cross-sectional schematic diagram of the second refraction assembly 230 in FIG. 2A;

FIG. 3B is a partial cross-sectional schematic view of the first refraction assembly 220 in FIG. 2A;

FIG. 4 is a schematic diagram of the relative positions of the first refraction component 220 and the second refraction component 230 according to a preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of relative positions of the first refraction component 220 and the second refraction component 230 according to another preferred embodiment of the present invention.

Among them, reference signs:

100: Light collecting component 102: Substrate

104: Protruding block 210: Substrate

220: first refraction component 222: lens

230: Second refraction component 232: Protruding block

P _P : Predetermined distance H: Height

β: Vertex angle _PL : Predetermined distance

W: Width R _Z : Height

Detailed ways

Referring to FIG. 2A and FIG. 2B , FIG. 2A is a schematic cross-sectional view of a light collecting component according to a preferred embodiment of the present invention, and FIG. 2B is a bottom view of the first refracting component 220 of FIG. 2A . As shown in the figure, a light collection component is composed of a base material 210 , a first refraction component 220 and a second refraction component 230 . Wherein, the first refraction component 220 is located above the substrate 210, and the first refraction component 220 has a plurality of lenses 222 arranged thereon. The above-mentioned shape of each lens 222 may be curved. The second refraction component 230 is located above the first refraction component 220 , and the second refraction component 230 has a plurality of protruding blocks 232 arranged thereon. Since the shape of the lens 222 is curved instead of straight, the moiré effect is greatly reduced compared with the prior art.

On the other hand, the lenses 222 shown in FIG. 2B all have irregular contours. Since the lens 222 has an irregular contour, that is, has a non-linear structure, the lens 222 will not easily produce a moiré effect with the liquid crystal pixels of the liquid crystal display.

The material of the above-mentioned base material 210 can be polycarbonate (PC), polyethylene terephthalate (PET) or polymethyl methacrylate (PMMA), and this base material 210 can be transparent non-diffusion function The substrate may be a substrate with a diffusion function. Wherein, the above-mentioned substrate with diffusion function can be a coating type or a direct film-forming type. In addition, the above-mentioned first refraction component 220 and the second refraction component 230 can be made of acrylic compound (Acrylate) or epoxy resin (epoxy resin). However, the above-mentioned materials are only examples and are not intended to limit the present invention, and other suitable light-transmitting materials can also be applied in the present invention.

More specifically, the above-mentioned lenses 222 can be arranged on the side of the first refraction component 220 facing away from the substrate 210, and the above-mentioned protruding blocks 232 can be arranged side by side on the side of the second refraction component 230 facing away from the first refraction component 220 superior. In addition, each lens 222 can be a convex lens. In this way, the first refraction component 220 can improve the brightness enhancement effect, and at the same time, the second refraction component 230 can perform the function of concentrating light, so that the backlight module has better luminance.

Referring to FIG. 3A , it is a partial cross-sectional schematic diagram of the second refraction component 230 in FIG. 2A . As shown in the figure, the centers of the protruding blocks 232 on the second refracting component 230 are at a predetermined distance P _P from each other, and the predetermined distance P _P may be between about 15-105 μm, or the predetermined distance P _P may also be Directly 50 μm. In addition, the height H of the above-mentioned protruding block 232 may be about 5-50 μm, or the height H of the protruding block 232 may be directly 25 μm. Furthermore, each protruding block 232 may have a top angle β, and the top angle β is between about 70°˜110°, or the top angle β may be directly 90°.

Referring to FIG. 3B , it is a partial cross-sectional schematic diagram of the first refraction component 220 in FIG. 2A . As shown in the figure, the centers of the lenses 222 on the first refraction component 220 may be separated from each other by a predetermined distance _PL , and the predetermined distance _PL may be about 0.1-40 mm. In addition, the width W of the aforementioned lens 222 may be about 0.2-20 mm. Furthermore, the height R _Z of each lens 222 may be about 1˜10 μm.

It should be understood that the size parameters mentioned above are only examples, and are not intended to limit the present invention, and the detailed dimensions of the light-collecting component should be flexibly adjusted according to current needs.

Referring to FIG. 4 and FIG. 5 , they are respectively schematic diagrams showing the relative positions of the first refraction unit 220 and the second refraction unit 230 according to two preferred embodiments of the present invention. In a preferred embodiment of the present invention, the length direction of the aforementioned lens 222 may be parallel to the length direction of the protruding block 232 (as shown in FIG. 4 ). In addition, the length direction of the lens 222 can also be perpendicular to the length direction of the protruding block 232 (as shown in FIG. 5 ). Those skilled in the art can adjust and modify this application according to the needs at that time, and its implementation is not limited to the examples presented here.

As can be seen from the preferred embodiments of the utility model described above, the application of the utility model has the following advantages:

(1) Since the utility model has the second refraction component and the first refraction component to exert the light-gathering effect, it can effectively increase the brightness of the backlight module;

(2) Since the lens of the present invention does not have a highly ordered structure, on the contrary, the brightening component formed by the present invention has a relatively low structural order, so the moiré effect can be greatly reduced; and

(3) There are more size parameters for users to fine-tune to achieve the optimal visual effect.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (8)

1. A light-collecting assembly, characterized in that it comprises at least: a substrate; a first refraction component, located above the substrate, and the first refraction component has a plurality of lenses arranged thereon, wherein the shape of the lenses is curved; and A second refraction component is located above the first refraction component, and the second refraction component has a plurality of protruding blocks arranged on it. 2 . The light collecting component according to claim 1 , wherein the lens is arranged on a side of the first refracting component facing away from the substrate. 3 . 3. The light collecting component according to claim 1, wherein the protruding blocks are arranged side by side on a side of the second refracting component facing away from the first refracting component. 4. The light collecting assembly according to claim 1, wherein each of the lenses is a convex lens. 5. A light-collecting assembly, characterized in that it comprises at least: a substrate; a first refraction component located above the substrate, and the first refraction component has a plurality of lenses, wherein the lenses have irregular contours; and A second refraction component is located above the first refraction component, and the second refraction component has a plurality of protruding blocks arranged on it. 6 . The light collecting component according to claim 5 , wherein the lens is arranged on a side of the first refracting component facing away from the substrate. 7 . 7. The light collecting component according to claim 5, wherein the protruding blocks are arranged side by side on a side of the second refracting component facing away from the first refracting component. 8. The light collecting assembly according to claim 5, wherein each of the lenses is a convex lens.

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