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Control method of backlight source and displaying framework thereof

A control method and light source technology, applied in the direction of light source, electric light source, static indicator, etc., can solve the problems of complex circuit layout of backlight module and increased number of buses

Inactive Publication Date: 2009-03-11
INNOLUX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, with the increase of the area of ​​the liquid crystal display panel, in order to effectively control the color resolution of the large-sized liquid crystal display panel, compared with the smaller-sized liquid crystal display panel, the divided parts of the large-sized liquid crystal display panel The number of display areas increases relatively, in other words, the number of backlight sources relative to the display area also increases. Based on this structure, the number of backlight drive units corresponding to each backlight source in the backlight module also increases accordingly. The number of buses between the backlight driving units increases, so the overall circuit layout for controlling the backlight module becomes very complicated

Method used

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  • Control method of backlight source and displaying framework thereof
  • Control method of backlight source and displaying framework thereof
  • Control method of backlight source and displaying framework thereof

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Embodiment Construction

[0036] In order to reduce the burden of circuit layout design on the printed circuit board in the backlight module, and at the same time achieve the effect of dynamically controlling the backlight, and have the ability to quickly respond to color and brightness, the present invention proposes a backlight control method and its Display architecture, which can provide light-emitting diodes as the backlight control function under a simplified circuit layout, and can use hardware addressing to achieve parallel control of backlight sources in several different display areas through instruction encoding and decoding . In the following, the specific embodiments of the present invention will be disclosed in detail, and the corresponding embodiments will be supplemented with drawings.

[0037] First, refer to FIG. 2, which is a schematic block diagram of a backlight control circuit structure of the present invention. In this backlight control circuit structure, there is a processing un...

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Abstract

The invention discloses a controlling method and a displaying framework of a backlight; the displaying framework comprises a backlight module control unit, a liquid crystal driver unit and a liquid crystal display unit, wherein, the backlight module control unit comprises a processing unit, a control bus, a clock bus, a plurality of LED (light emitting diode) backlight driver units and at least one LED backlight; the addressing of every LED backlight driver unit is carried out by utilizing the addressing of hardware, then a control signal with an addressing order is generated by the processing unit so as to designate an LED backlight driver unit which intends to start. Therefore the invention can lower the difficulty and complexity of the circuittopology design between the processing unit and the backlight driver unit, and can further achieve the purpose of dynamically controlling the backlight.

Description

technical field [0001] The present invention relates to a backlight control method and its display structure, in particular to a control method using light-emitting diodes as a backlight source and its display structure. Background technique [0002] In order to more precisely control the color and brightness of each display area on the liquid crystal display panel, related technologies using light-emitting diodes as backlight sources have attracted much attention. Please refer to FIG. 1, which is a schematic block diagram of an existing backlight module control architecture. A backlight module has a processor 10, multiple backlight drive units 121, 122, 123, 124 and multiple backlight sources. 141, 142, 143, 144, in terms of signal control, the processor 10 generates control signals for controlling the backlight driving units 121, 122, 123, 124 respectively, so that each backlight driving unit 121, 122 receiving the signal , 123, 124 can control their corresponding backlig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G09G3/34G09G3/36G09G3/20H05B37/02H05B41/00
Inventor 石清文蔡肇铭
Owner INNOLUX CORP