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Thin-type LED (Light-Emitting Diode) backlight source

A technology of LED backlight and LED light source, which is applied in the direction of light source, electric light source, point light source, etc., can solve the problems of high power consumption and high cost, and achieve the effects of cost reduction, lower margin, and lower cost

Inactive Publication Date: 2011-02-09
NANJING CEC PANDA LCD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high cost and high power consumption caused by the need to use a large number of LED particles in the existing LED light-emitting module, and to design a method that can ensure sufficient brightness on the premise of greatly reducing the LED particles. Thin LED backlight

Method used

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  • Thin-type LED (Light-Emitting Diode) backlight source
  • Thin-type LED (Light-Emitting Diode) backlight source
  • Thin-type LED (Light-Emitting Diode) backlight source

Examples

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Effect test

Embodiment 1

[0025] Such as Figure 4 shown.

[0026] A thin LED backlight source, which is mainly composed of a light guide plate 41, an LED light source 42, a reflective film 43, a side reflective film 44 and the like. The LED light source is placed at the counterbore 45 . According to the brightness requirements, select the number of LEDs and the corresponding number of countersunk holes in the light guide plate, and then arrange them in the form of evidence to achieve the ideal brightness. The scattering pattern of the light guide plate is arranged on the bottom surface of the light guide plate. The light L1 enters the light guide plate after exiting, and after being diffused by the reflective pattern on the bottom surface of the light guide plate, the light L1 exits from the light guide plate. After the light L2 exits, it enters the light guide plate, is transmitted by the light guide plate, irradiates on the side reflector, and is emitted through the reflector. After L2 is diffuse...

Embodiment 2

[0031] Such as Figure 5 shown.

[0032] A thin LED backlight, which combines the structural features of edge-type backlight and direct-type backlight. It is mainly composed of a light guide plate 51, an LED light source 52, a reflection film 53, a light bar 54 and a diffusion film 55, etc. The LED light source is placed at the sink hole 56, and the light bar 54 can be installed on both sides of the light guide plate. According to the brightness requirements, select the number of LED light sources, the number of corresponding countersunk holes in the light guide plate, and the light bar. The scattering pattern of the light guide plate is arranged on the bottom surface of the light guide plate. The light L1 enters the light guide plate after exiting, and after being diffused by the reflective pattern on the bottom surface of the light guide plate, the light L1 exits from the light guide plate. The light L2 enters the light guide plate after exiting, and after being diffused...

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Abstract

The invention relates to a thin-type LED backlight source which is characterized by mainly comprising a light guiding plate, LED light sources, a reflecting film sheet, a side reflecting film sheet and a diffusion film sheet, wherein the reflecting film sheet is installed on the bottom surface of the light guiding plate, the side reflecting film sheet is positioned on the lateral surface of the light guiding plate and vertical to the reflecting film sheet, the diffusion film sheet is positioned at the upper part of the light guiding plate, sunk holes for installing the LED light sources are arranged at the bottom of the light guiding plate, and the LED light sources are installed in the sunk holes. A small amount of LED light sources can be used in the invention without using a diffusion plate having more light brightness loss, and because the light guiding structure of the light guiding plate is still used, the invention also has all the advantages of thinning, and the like of an edge-type backlight source.

Description

technical field [0001] The invention relates to a liquid crystal display technology, in particular to a liquid crystal display with a backlight source, specifically a thin LED backlight source. Background technique [0002] At present, there are mainly two types of backlight sources used for liquid crystal displays: edge type and direct type. The advantages of the edge type backlight are that the number of LEDs is small, the thickness is thin, the light output efficiency is high, and the power consumption is small. figure 1 is a cross-sectional view of an edge-type backlight. Such as figure 1 As shown, a general edge-type backlight is composed of a light bar 13 , a light guide plate 11 (with a scattering pattern printed on the bottom surface), a reflective film 12 , a diffusing film 15 and an optical brightening film 16 . The light emitted from the light bar directly enters the light guide plate. The light irradiates the scattering pattern printed on the light guide plat...

Claims

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Application Information

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IPC IPC(8): G02F1/13357F21V17/00F21S8/00F21V19/00F21V13/00F21Y101/02
Inventor 徐朝毅
Owner NANJING CEC PANDA LCD TECH