Backlight type backlight module

A backlight module and side-light technology, which is applied in the field of side-light backlight modules, can solve problems such as extra light loss, non-conformity, and increased power consumption of the backlight module, so as to maintain light uniformity, reduce production costs, and achieve good light output. The effect of uniformity

Inactive Publication Date: 2012-02-15
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a diffuser will increase the overall thickness and cost of the backlight module, and will cause additional loss of light, so the brightness of the light source must be increased
In this way, the power consumption of the backlight module will increase, which is not in line with the current trend of energy saving and carbon reduction
In addition, since the vertex angles of the prism structure of the prism sheet of the existing backlight module are all right angles or obtuse angles, if the diffusion sheet is omitted, the light distribution of the backlight module will be shifted. In the case of the film, its maximum brightness will not appear in the front viewing angle, but will appear in the oblique viewing angle, which will cause poor display effect

Method used

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  • Backlight type backlight module
  • Backlight type backlight module
  • Backlight type backlight module

Examples

Experimental program
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Embodiment Construction

[0026] In order for those skilled in the art to have a better understanding of the present invention, preferred embodiments of the present invention are enumerated below, together with the accompanying drawings, to describe in detail the composition and desired effects of the present invention.

[0027] Please refer to Figure 1 to Figure 3 . Figure 1 to Figure 3 A schematic diagram illustrating an edge-lit backlight module according to a first preferred embodiment of the present invention, wherein figure 1 An exploded schematic view of the edge-lit backlight module of the present embodiment is shown, figure 2 painted figure 1 The schematic cross-sectional view of the edge-lit backlight module drawn along the first direction, image 3 painted figure 1 A schematic cross-sectional view of the edge-lit backlight module drawn along the second direction. Such as Figure 1 to Figure 3 As shown, the edge-lit backlight module 10 of this embodiment includes a light guide plate ...

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Abstract

The invention discloses a backlight type backlight module, comprising a light guide plate, a light source, a first prism lens and a second prism lens, wherein the light guide plate comprises at least one light entering surface and a light exiting surface, the light source is arranged at the light entering surface of the light guide plate and used for emitting light to the light guide plate approximately along a first direction, the first prism lens is arranged at the light exiting surface of the light guide plate, the first prism lens comprises a plurality of parallel first prism lens structures arranged along a second direction approximately vertical to the first direction, each first prism structure comprises a first vertical angle which is an acute angle, the second prism lens is arranged at the light exiting surface of the light guide plate, the second prism lens comprises a plurality of parallel second prism structures approximately arranged along the first direction, and each second prism structure comprises a second vertical angle which is no smaller than the first vertical angle.

Description

technical field [0001] The invention relates to a side-light backlight module, in particular to a side-light backlight module with no diffuser design and better light uniformity. Background technique [0002] Since the liquid crystal display panel is a non-self-illuminating display panel, it needs to be used together with a backlight module that can provide a light source to achieve a display effect. Generally speaking, the backlight module can be divided into a direct lighting backlight module and an edge lighting backlight module according to the relative positions of the light sources. Existing backlight modules are equipped with at least one diffusion sheet and prism sheet, wherein the diffusion sheet is used to diffuse the light provided by the light source to improve the uniformity of light output, and the prism sheet is used to concentrate the light emitted by the diffusion sheet to improve the brightness. light utilization. However, adding a diffuser will increase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V13/02
Inventor 郑造时范富诚
Owner AU OPTRONICS CORP
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