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Light guide plate, backlight module and display panel

A backlight module and display panel technology, applied in the direction of light guides, optics, optical components, etc., can solve problems such as color shift, uneven light output from the light guide plate, etc., and achieve the effects of uniform light, reduced light dispersion, and uniform diffusion

Inactive Publication Date: 2019-05-03
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a light guide plate, a backlight module and a display panel to solve the problems of uneven light emission and color shift of the existing light guide plate

Method used

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  • Light guide plate, backlight module and display panel
  • Light guide plate, backlight module and display panel
  • Light guide plate, backlight module and display panel

Examples

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Embodiment Construction

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0034] In the related art, the light guide plate has a single-layer structure, and its refractive index is a fixed value. For the backlight module of the side light source, after the white light enters the light guide plate from one side of the light guide plate, it propagates in the light guide plate along a straight line. Short, at the position close to the side light source, light of different wavelengths is prone to disper...

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PUM

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Abstract

The invention provides a light guide plate, a backlight module and a display panel. The light guide plate comprises a plurality of light guide layers which are sequentially stacked in a predetermineddirection. The refractive indexes of the plurality of light guide layers are greater than the refractive index of the air. The refractive indexes of at least two light guide layers in the plurality oflight guide layers are different, so that light is refracted among the light guide layers. The optical path of the light in the light guide plate is increased. The problem of color cast of the lightguide plate near a side light source is effectively improved. The light of different incident angles and the light of different wavelengths have substantially the same optical path. All of the light diffuses evenly in the light guide plate, and finally the outgoing light is more uniform.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a light guide plate, and also to a backlight module and a display panel including the light guide plate. Background technique [0002] In the field of liquid crystal display, the display effect of the liquid crystal screen has a great relationship with the structure of the backlight module, so the optimal design of the structure of the backlight module is particularly important. The light guide plate is a key component of the backlight module, which is used to transform the line light source into a surface light source and emit uniform light. It is an indispensable part of the display panel. For side-incident backlight modules, problems of uniformity and color shift are prone to occur. [0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00
Inventor 张菲菲
Owner BOE TECH GRP CO LTD