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Direct type backlight module structure

A backlight module and improved structure technology, which is applied in the field of improved structure of direct-type backlight module, can solve the problems of reducing image clarity and saturation, reducing mixed light effect, light uniformity, etc.

Inactive Publication Date: 2014-01-01
UNITY OPTO TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] It is worth noting that the adjacent positions between the multiple circular light shapes 1 are formed with intersecting bright parts 10 and dark parts 11 without light. In this way, the light mixing effect will be reduced and the light uniformity will be affected, and the liquid crystal display When changing the bright and dark areas in the picture, it will affect the gray level of the adjacent picture areas, resulting in micro-blurring (Blooming), reducing the clarity and saturation of the picture image

Method used

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Embodiment Construction

[0023] In order to enable your examiners to clearly understand the content of the present invention, the following descriptions are provided together with the drawings, please refer to them.

[0024] see figure 2 , 3 , which are respectively a structural cross-sectional view of a preferred embodiment of the present invention and a schematic diagram of projected light shape on the diffuser plate. As shown in the figure, the improved structure 2 of the direct-lit backlight module is intended to be combined with a display module (not shown), such as a display panel of a liquid crystal display with an aspect ratio of 16:9 to provide a light source. The improved structure 2 of the direct type backlight module has a substrate 20, a plurality of LED light sources 21 and a diffusion plate 22, the plurality of LED light sources 21 are arranged in a matrix on the substrate 20, and the diffusion plate 22 covers the plurality of LED light sources 21 at an appropriate distance, and is u...

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Abstract

A direct type backlight module structure combined with a display module includes a plurality of LED light sources aid a diffusion plate, and the LED light sources are arranged into a matrix, and each of the lights emitted from the LED light sources forms a rectangular light pattern separately on the diffusion plate and is transmitted to the display module, so that the rectangular light patterns disposed adjacent to one another can enhance the light mixing effect, improve the light uniformity of the backlight module, and optimize the screen display effect of the display module.

Description

technical field [0001] The invention belongs to the technical field of backlight modules for liquid crystal displays, and in particular relates to an improved structure of a direct-type backlight module, which can enhance the light mixing effect and improve the picture display effect by changing the light path distribution shape of the LED light source. Background technique [0002] Since the liquid crystal display is a passive display device without self-luminous function, it is necessary to install a backlight module to provide the display light source required by the display panel. In this way, whether the surface light source generated by the backlight module has sufficient and uniform brightness will directly affect LCD display quality. At present, the backlight module can be divided into two types according to its structure: side-light type and direct-type backlight. Among them, the direct-type backlight module has high uniformity of illumination, good viewing angle of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V5/04G02F1/13357F21Y101/02
CPCG02F1/133611G02B19/0028G09F9/00G02F1/133603G02B19/0066G09F9/35G09F13/0409
Inventor 林威冲吴秉宸
Owner UNITY OPTO TECH CO LTD
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