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Backlight module device based on polarization light source

A backlight module and light source technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as low light utilization efficiency

Inactive Publication Date: 2006-11-15
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problem of low light utilization efficiency of the existing backlight module, the present invention provides a backlight module device based on a polarized light source, which can directly emit polarized light, and can save a set of polarizers when used in a liquid crystal display, greatly reducing light loss , to increase the brightness of the display

Method used

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  • Backlight module device based on polarization light source
  • Backlight module device based on polarization light source

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Embodiment Construction

[0013] There are two types of backlight module devices based on polarized light sources provided by the present invention, that is, backlight module devices based on polarized light LEDs and polarized light OLEDs. The light source it adopts does not need a polarizer, and directly emits polarized light. details as follows:

[0014] 1. Backlight module device based on polarized LED

[0015] Its structure is as figure 1 As shown: it includes an optical film 3, a substrate 4 and a polarized LED 5, which are sequentially connected by an optical path. The polarized light source is a plurality of LEDs that directly emit polarized light. The number of LEDs is determined according to the brightness requirements and brightness uniformity. Different colors of polarized LEDs can be combined according to the backlight requirements to obtain the required color backlight. Polarized LEDs directly emit polarized light, and a plurality of polarized LEDs are attached to the substrate to obtai...

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Abstract

The present invention relates to a backlight module device based on polarization light source. Its structure includes the following several portions: base plate, polarization light source placed on said base plate and optical film placed on said polarization light source. It can be used as backlight illumination light source in liquid crystal display.

Description

technical field [0001] The invention relates to the display field, in particular to a backlight module device based on a polarized light source, which is a liquid crystal display backlight module device based on directly emitting polarized light. Background technique [0002] The backlight module mainly provides a uniform and high-brightness light source for the LCD panel. The basic principle is to transform the commonly used point or line light source into a high-brightness and uniform luminance surface light source product through a simple and effective light mechanism. Generally, the linear light source of cold cathode tube (CCFL) enters the light guide plate through the reflector, transforms the linear light source into a uniform surface light source, and then improves the brightness and Uniformity. In recent years, with the improvement of liquid crystal display manufacturing technology, under the trend of large size and low price, the backlight module needs to consider...

Claims

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Application Information

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IPC IPC(8): G02F1/1335
Inventor 刘德明刘陈
Owner HUAZHONG UNIV OF SCI & TECH
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