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Novel high-brightness high-concealing light guide plate

A light guide plate, high-brightness technology, applied in the direction of light guide, optics, optical components, etc., can solve the problems of large diffuse reflection or scattering angle of light source light, difficult to use light source light, large loss of light energy of light guide plate, etc., and achieve good reflection effect. , Improve the utilization of light energy, improve the effect of concealer

Pending Publication Date: 2021-05-14
DONGGUAN YUANLI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that during the transmission of light through the light guide plate, the light from the light source forms diffuse reflection or scattering in multiple directions through the dots to the light-emitting surface, and the arc-shaped protrusions on the light-emitting surface refract the light and transmit it here. During the process, the diffuse reflection or scattering angle of the light source light is large, making it difficult to use the light source light in the effective viewing area. The light energy loss of the light guide plate set in this way is large. At the same time, when the light guide plate has small defects or white spots due to processing , this setting is difficult to cover up small blemishes or white spots

Method used

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  • Novel high-brightness high-concealing light guide plate
  • Novel high-brightness high-concealing light guide plate
  • Novel high-brightness high-concealing light guide plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050]Referfigure 2 withimage 3 The reflecting surface 4 of the light guide plate body 1 is provided with a first cut slot 6, and the first cutting groove 6 is disposed in the longitudinal direction of the light guide plate body 1, which is consistent with the light source incident, and the depth of the first cut groove 6 needs to be greater than or equal to. 20UM to ensure that the first cutting groove 6 has a better concentration effect. In the present embodiment, the first cut groove 6 can be arranged in a plurality of first cutting grooves 6 arrangement in the width direction of the conductive plate body 1, so that the reflecting surface 4 forms a plurality of reflective or scattered light source light. The first curved surface 11 and the second curved surface 12.

[0051]ReferFigure 4 In this embodiment, the plurality of first curved surfaces 11 are arranged at intervals along the width direction of the light guide plate body 1 along the width direction of the light guide plate bo...

Embodiment 2

[0067]Example 2: Different from Example 1, referring toFigure 9 withFigure 10 , Adjacent two third compound bids 18 are coincident adjacent one end point of the outlet side 3, and the two sides of the longitudinal direction of the light curved surface 13 are starting the curve 131 and the end point curve 132, and the starting curve 131 is located Light side 2, the end point curve 132 is located at the light side 3. The radius of the starting curve 131 is less than the radius of curvature of the end point curve 132, and is located at 0-25 um. The outlet surface 13 is gradually increased in the radius of curvature in the longitudinal direction of the conductive plate body 1, so that the light-receiving surface of the light-receiving surface 13 is gradually increased in the direction of the light-receiving surface of the light-receiving surface 13. Big, and makes more light source lights located on the exit side 3 tend to active visits, and the lifting the light guide plate body 1 is l...

Embodiment 3

[0070]Example 3: ReferenceFigure 11 withFigure 12 Unlike Example 1 and Example 2, the midpoint of adjacent two third compound bid 18 is coincident, and the two ends of the longitudinal direction of the light curved surface 13 are set to start curve 131 and the end point curve, respectively. 132. The radius of curvature of the starting curve 131 is equal to the radius of curvature of the end point curve 132. A central curve 20 is also provided on the outlet surface 13, and the central curve 20 is located at the midpoint of the light curved surface 13, and the radius of curvature of the central curve 20 is larger than the radius of the starting curve 131 and the end point curve 132, the starting curve 131 endpoint curve 132 And the radius of curvature of the central curve 20 is located in the range of 0-8um. The outward curve 131 from the start curve 131 and the end point curve 132 are gradually increased in the longitudinal direction of the conductive plate, and further optimize the ...

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PUM

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Abstract

The invention relates to the field of light guide plate production and processing and particularly relates to a novel high-brightness high-concealing light guide plate. The light guide plate comprises a light guide plate body, wherein a light inlet side and a light outlet side are arranged at two ends of the light guide plate body in the length direction, and a reflecting surface and a light outlet surface are arranged on surfaces of the two sides of the light guide plate body in the thickness direction respectively; a plurality of first cutting grooves are formed in the reflecting surface, the first cutting grooves are parallel to the incident direction of the light source, the second cutting grooves are all perpendicular to the incident direction of the light source, the second cutting grooves are non-isosceles V-shaped grooves, every two adjacent second cutting grooves are connected to form a vertex angle, and the vertex angle is not changed; the first cutting grooves and the second cutting grooves are arranged in a staggered mode to form a plurality of free-form surfaces protruding outwards, and a plurality of third cutting grooves are formed in the surface of the light emitting surface. According to the light guide plate, the light can be reasonably distributed in an effective visual area, and light emitting brightness of the light is improved, so the light energy utilization rate is improved, and the concealing performance on white spots or small flaws is improved.

Description

Technical field[0001]The present application relates to the field of production and processing of light guide plates, in particular to a new type of high brightness highlands.Background technique[0002]The backlight module is widely used in a variety of electronic devices or display devices, wherein the light guide plate is mainly used to efficiently transmit light to form a surface light source, which is an indispensable core construction of the backlight module. The nature of the light guide plate can be greatly determined. The luminance and lighting efficiency of the backlight module.[0003]In the conventional design of the light guide plate, there is a plurality of outlets in the reflective surface, and the light light surface is provided with a plurality of curved projections. When the light is incident on the light-guided side to the light guide substrate, the incident light will be destroyed. The total reflection path and the formation surface light source is emitted via the li...

Claims

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Application Information

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IPC IPC(8): G02B6/00G09F9/30
CPCG02B6/0038G02B6/0058G09F9/30
Inventor 黄爱群阮绪红陈媛媛
Owner DONGGUAN YUANLI ELECTRONICS TECH