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Backlight module and display device

A technology for a backlight module and a display device, which is applied to lighting devices, fixed lighting devices, and components of lighting devices, etc., can solve the problems of less dimming areas of backlight modules, easy mutual interference and influence of light, and impact of regional dimming effects. , to ensure the number of areas, reduce the use cost and energy consumption, and reduce the effect of light interference

Inactive Publication Date: 2010-12-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this partition dimming method is not easy to control the luminous level of the middle area of ​​the light guide plate, that is, the area of ​​the backlight module that can be dimmed is less
Furthermore, in all kinds of zonal dimming methods, the light in different light-emitting areas is likely to interfere with each other, which seriously affects the effect of zonal dimming.

Method used

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  • Backlight module and display device
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  • Backlight module and display device

Examples

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Embodiment Construction

[0032] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0033] In the figures, structurally similar units are denoted by the same reference numerals.

[0034] Please refer to figure 1 , which shows a schematic cross-sectional view of the backlight module and the display panel according to the first embodiment of the present invention. The backlight module 100 of this embodiment can be, for example, a side-light incident backlight module, which is arranged relative to a display panel 101 (such as a liquid c...

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PUM

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Abstract

The invention provides a backlight module and a display device. The display device comprises the backlight module and a play panel, wherein the backlight module comprises a plurality of light sources, a plurality of light guide units and at least one reflecting layer, wherein the light guide units corresponding to the light sources are arranged at one sides of the corresponding light sources; the reflecting layer is formed between any two light sources, and the partial reflecting layer extends between two light guide units corresponding to the two light sources. The invention can ensure subarea dimming area quantity and improve light interference among different light-emitting areas.

Description

【Technical field】 [0001] The invention relates to a backlight module and a display device, in particular to a backlight module and a display device capable of zone dimming. 【Background technique】 [0002] Liquid Crystal Displays (LCDs) have been widely used in various electronic products. Most of the LCDs are backlight LCDs, which are composed of a liquid crystal display panel and a backlight module. The backlight module can be divided into side-light type and direct-light type according to the incident position of the light source, so as to provide backlight to the liquid crystal display panel. [0003] At present, the backlight module of the liquid crystal display can be provided with a plurality of light-emitting areas, and different light-emitting brightnesses can be adjusted in different light-emitting areas, that is, local dimming can be performed. In order to perform zone dimming, generally, the backlight module arranges light-emitting diode (LED) crystals directly b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V13/00F21V17/00G02F1/13357
CPCG02B6/0088G02B6/0055F21V17/00F21S8/00G02B6/0078F21V13/00G02B6/0076
Inventor 方林冬郭仪正
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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