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A kind of backlight module and liquid crystal display device

A backlight module and backlight technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as the decline of backlight color purity and the color crosstalk of three primary colors of backlight.

Active Publication Date: 2020-09-22
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present application provides a backlight module and a liquid crystal display device to solve the problems of the color purity reduction of the backlight and the color crosstalk between the three primary color backlights

Method used

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  • A kind of backlight module and liquid crystal display device
  • A kind of backlight module and liquid crystal display device
  • A kind of backlight module and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Please refer to figure 2 , is a schematic diagram of the distribution of backlight light emitted by the backlight light source provided in this application. Depend on figure 2 It can be seen that the emission angle distribution range of the backlight light is very large, and the backlight light is emitted within ±90° centered on the center line of the backlight light source. It can be seen that the backlight light does not have a good collimation effect, and the backlight light with a large emission angle easily enters other quantum dot conversion units except the corresponding quantum dot conversion unit, resulting in a decrease in pixel color purity, and the backlight between the three primary colors The color crosstalk affects the display effect of the liquid crystal display.

[0026] see image 3 and Figure 4 , are respectively a structural schematic diagram of a backlight module provided in Embodiment 1 of the present application and a structural schematic d...

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Abstract

A backlight module, comprising: multiple light emitting modules (100), each light emitting module (100) comprising a backlight element (200) and a light ray collimation structure (300); the backlight element (200) comprises at least one backlight source (210); the light ray collimation structure (300) comprises a convergence and turning component (310) and reflection components (320); the convergence and turning component (310) comprises a component body (311), the component body (311) comprises a reflection surface (313), said reflection surface (313) being used to reflect at least part of the light ray emitted by the backlight source (210) toward the plane in which the backlight element (200) is; the reflection components (320) are provided at the periphery of the convergence and turning component (310), each reflection component (320) comprises a curved surface (321), and said curved surface (321) is used for reflecting the light ray reflected from the reflection surface (313).

Description

technical field [0001] The present application relates to the field of liquid crystal display, in particular to a backlight module and a liquid crystal display device. Background technique [0002] A liquid crystal display usually includes a backlight module and a liquid crystal panel arranged in sequence. The liquid crystal panel is a passive light-emitting element, which does not emit light itself, and requires a backlight module to provide a backlight with sufficient brightness to realize the display function of the liquid crystal display device. [0003] figure 1 It is a schematic diagram of the structure of a liquid crystal display. Such as figure 1 As shown, the liquid crystal display includes a backlight module 10 and a liquid crystal panel 20 . The backlight module includes a plurality of LED blue backlight sources 11 evenly distributed, the liquid crystal panel 20 includes a liquid crystal layer 21 and a quantum dot color conversion layer 22, the liquid crystal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133603G02F1/133605G02F1/133606
Inventor 李富琳宋志成刘卫东
Owner HISENSE VISUAL TECH CO LTD
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