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Backlight guide plate for high screen-to-body ratio

A light guide plate and backlight technology, which is applied in the field of backlight light guide plate, can solve the problems of narrow light mixing area distance and unreachable light mixing effect, and achieve the effect of reducing structural changes, good light mixing effect, and good astigmatism effect

Pending Publication Date: 2018-10-12
SHENZHEN BAOMING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is how to solve the problem that in the LCD backlight module, the distance of the light mixing area is narrow and the light mixing effect cannot meet the lighting requirements of the backlight

Method used

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  • Backlight guide plate for high screen-to-body ratio
  • Backlight guide plate for high screen-to-body ratio
  • Backlight guide plate for high screen-to-body ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, the light-incident side edge of the board body 1 is provided with an astigmatism structure 2, and the astigmatism structure 2 is specifically formed by a plurality of light-incident structures 21 equidistantly arranged, and the light-incident structure 21 is specifically a triangular shape that is sunken into the board body 1 structure, the top of the depression is a circular arc structure 3.

[0023] In this embodiment, as attached Figure 2~4 As shown, the protruding part is an arc structure, the concave part is a planar structure, the protruding height of the light-incident structure 21 is 0.025 mm, the distance between the light-incident structures 21 is 0.04 mm, and the arc structure 3 in the light-incident structure 21 The semi-diameter is 0.03mm.

[0024] Through the above parameters, the actual structural shape of the light incident structure 21 can be uniquely determined.

[0025] When working, the LED light source arranged at the front of...

Embodiment 2

[0028] In this embodiment, the difference from Embodiment 1 is that the protruding part of the light-incident structure 21 is a circular arc structure, and the concave part is also a circular arc structure, and the relevant parameters remain unchanged. Figure 5 shown.

[0029] When this structure is used, the incident light can be scattered better. Due to the problem of incident angle, a part of the light passes directly through the gap between the two protruding arcs without contacting the protruding arcs, and the arc structure 3 in the concave part can just be used as a bottom structure to control this part of the light. Scattering, improve the scattering efficiency of the overall light; in addition, there is the effect of triple refraction, that is, part of the light enters from the protruding arc structure 3, and the incident light will directly pass through the other side of the protruding arc structure 3 After this kind of one-in-one-out, the refracted light will still...

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PUM

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Abstract

The invention discloses a backlight guide plate for the high screen-to-body ratio. The backlight guide plate comprises a plate body,a light-scattering mechanism is arranged on the edge of the light incident side of the plate body,the light-scattering structure is composed of multiple light incident structures recessed into the plate body,the recessed part of the light incident structure is of a wave-like structure,and the light incident structure is recessed to be of an arc structure. By re-designing the structure of the recessed top in the light incident structure,and the light path correction effect and light-scattering effect of incident light are enhanced; in addition,by means of good cooperation of the whole parameter,the plate body is excellent in structure,the distance of a mixed light area can be reduced,and the screen-to-body ratio is increased.

Description

technical field [0001] The invention relates to the field of backlight design for mobile phones, in particular to a backlight light guide plate for high screen-to-body ratio. Background technique [0002] At present, in mobile terminals and some digital display devices, the requirements for screen-to-body ratio are getting higher and higher, even if some of them use LCD display, the visible area of ​​the structure of the backlight used is larger, that is, The screen-to-body ratio of the backlight is required to be larger. The backlight structure uses a plurality of LEDs as light sources, and LEDs are similar to point light sources. The light emitted by point light sources passes through the optical structure inside the backlight and is transformed into a surface light source. The requirement of the surface light source is to emit light uniformly in the entire visible area without light spots and other light defects. In the entire optical structure, the most important thing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00
CPCG02B6/002G02B6/0073
Inventor 张春焦江华
Owner SHENZHEN BAOMING TECH