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Driving device and display module

A technology of a driving device and a display part, which is applied in the directions of static indicators, the attachment of light weapons, weapon accessories, etc., can solve the problems of uneven display and the like

Inactive Publication Date: 2004-10-06
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0043] Therefore, in the liquid crystal display device, the charging time of each output is dispersed, and as a result, display unevenness and the like occur.

Method used

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  • Driving device and display module
  • Driving device and display module
  • Driving device and display module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] An embodiment of the present invention will now be described.

[0077] figure 2 It is a block diagram showing the configuration of main parts of the liquid crystal display device (this liquid crystal display device; display module) of this embodiment. As shown in the figure, this liquid crystal display device includes a liquid crystal panel 1 , a driver IC 2 , a driver IC 3 , a controller 4 and a liquid crystal driving power supply 5 .

[0078] This liquid crystal display device is an active matrix liquid crystal display device, and has a structure in which liquid crystal display elements including TFTs (Thin Film Transistors) are arranged in a matrix on a liquid crystal panel 1 . In addition, each liquid crystal display element of the liquid crystal panel 1 includes a counter electrode (common electrode) 6 .

[0079] Driver IC2 , driver IC3 , controller 4 and liquid crystal drive power supply 5 control the driving of liquid crystal panel 1 .

[0080] In this liquid...

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PUM

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Abstract

A source driver includes a hold memory circuit and a switch circuit. The hold memory circuit includes (i) delay circuits for delaying an inputted horizontal synchronization signal, (ii) hold latch cells each for latching display data in accordance with the horizontal synchronization signal that has been delayed by the delay circuit, and (iii) a control circuit for outputting a display start signal to the switch circuit upon receipt of the horizontal synchronization signal that has been delayed by the delay circuit. The switch circuit outputs a plurality of driving signals in accordance with the display start signal. This allows the peak value of the power source current to be reduced, and enables to avoid the malfunction of the source driver due to the misidentification of the horizontal synchronization signal and to avoid that the output timing becomes nonuniform.

Description

technical field [0001] The present invention relates to a drive device for a display module that drives a display image based on digital-analog converted display data, and a display module equipped with the drive device. Background technique [0002] Liquid crystal panels (liquid crystal display panels) are often used in displays (display modules (such as liquid crystal display devices)) of PCs (personal computers) and TVs (television sets). [0003] Here, an example of the configuration of a drive circuit for driving a liquid crystal panel will be described. [0004] Figure 13 It is a block diagram showing the configuration of an X driver (source driver) serving as a drive circuit for supplying signals to the source line. The technology related to this circuit is disclosed in Japanese Patent Publication No. 2747583 (published on December 12, 1998), for example. [0005] in addition, Figure 14 yes Figure 13 The timing diagram of the signal (main input signal, internal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G09G3/20G09G3/36
CPCG09G3/3688G09G2310/027G09G2330/025G09G2320/0233G09G2310/0289F41C33/0236F41C33/0263
Inventor 清水幸浩
Owner SHARP KK