Display with edge-lit light guide combined backlight board and homogenization method thereof

A backlight and display technology, applied in static indicators, instruments, etc., can solve the problem of uneven brightness of the backlight

Inactive Publication Date: 2011-07-20
DYNASCAN TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0014] Another object of the present invention is to provide a homogenization method for a display with an edge-firing light guide combined backlight panel that has the function of adjusting the regional brightness and can solve the problem of uneven brightness of the backlight panel

Method used

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  • Display with edge-lit light guide combined backlight board and homogenization method thereof
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  • Display with edge-lit light guide combined backlight board and homogenization method thereof

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Embodiment Construction

[0052] For illustrative purposes, Figure 7 In the illustration, only a part of a backlight panel composed of a plurality of light guides will be taken, for example, a total of 9 light guides 90 , 91 . . . 98 adjacent to each other will be described. And the light guide located in the center is numbered 90, and the adjacent light guides located around the light guide 90 are respectively numbered 91, 92...98; each light guide 90, 91...98 is respectively provided with a corresponding LED light source 80, 81. ..88. Taking the light guide 90 as an example, after the light from the LED light source 80 passes through the light guide 90, it may emit light across regions to cause the so-called "Cross-Talk" effect in other regions, and provide different positions for different positions of the front liquid crystal panel. Brightness contribution. In this case, in order to accurately calculate and quantify the contribution, the light guide light rate distribution information D(x, y) is...

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Abstract

The invention discloses a display with an edge-lit light guide combined backlight board and a homogenization method thereof. The display comprises the backlight boards, liquid crystal boards, a group of memory devices and a group of control devices, wherein the backlight board is used for leading a light source in, and consists of a plurality of light guides which are arranged adjacent to one another; the liquid crystal board is positioned on the emergent side of the backlight board, and consists of a plurality of unit cells with variable light permeability; the group of memory device stores the emergent light distribution of the light guides; the group of control devices calculate compensation image information to control the light permeability of the cell units of the liquid crystal board; and in the local-area dimming control homogenization of the backlight board, luminance is controlled in combination with the emergent rate distribution information of the fusion light guides, and the individual light permeability of the cell units is determined according to the compensation image information to achieve a luminance homogenization effect.

Description

【Technical field】 [0001] The invention relates to a homogenization method for a display, in particular to a display with an edge-firing light guide combined backlight plate and a homogenization method thereof. 【Background technique】 [0002] The application of liquid crystal screen (LCD) has been quite popular. It is different from the traditional screen (CRT) using vacuum picture tube (CRT). The use has also been greatly reduced, making LCD screens completely replace CRT screens in the market. [0003] Compared with the mainstream cold-cathode tube light source in the past, the current LCD screen mostly adopts LED as the backlight behind the LCD panel, and uses LED as the light source in the backlight panel, mainly in the following two structures [0004] 1. Use multiple LEDs to form a surface light source, which is directly irradiated to the LCD panel, which is called "Direct-lit" backlight panel. [0005] 2. Using the light guide technology, the LED light source forms a...

Claims

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Application Information

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IPC IPC(8): G09G3/34G09G3/36
Inventor 王遵义
Owner DYNASCAN TECH
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