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Display driver and image display apparatus

An image display device and display driving technology, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of uneconomical, high-cost display driving circuits, etc., and achieve the effect of simplifying the circuit configuration

Active Publication Date: 2008-11-26
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Here, if only the frame memory is considered, the full HDTV display driving circuit can also be used in the display device corresponding to the display format of 720p, however, the use ratio 720p display driver circuit with high cost, very uneconomical

Method used

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  • Display driver and image display apparatus
  • Display driver and image display apparatus
  • Display driver and image display apparatus

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Embodiment Construction

[0041] (Schematic configuration of the projector)

[0042] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0043] FIG. 1 is a block diagram showing the configuration of a projector 1 as an image display device.

[0044] The projector 1 performs predetermined image processing on the input image information (image signal), and based on the processed image information, performs optical processing on the light beam emitted from the light source to form image light, and enlarges and projects it on the screen. The projector 1 is roughly composed of an image projection unit 10, a control device 20, and the like, as shown in FIG. 1 .

[0045] The image projecting unit 10 , under the control of the control device 20 , forms image light and enlarges and projects it on the screen. As shown in FIG. 1 , the image projection unit 10 includes a light source device 11 , a liquid crystal light valve 12 as a display device, an optical pr...

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Abstract

This invention provides a display driver and image display apparatus. A liquid crystal driving circuit (61) used as a display driving circuit is used for driving a display device with a plurality of pixels. The liquid crystal driving circuit (61) comprises: an image processing circuit (612) that receives an image signal (D2) that contains information to be displayed on each of the plurality of pixels and applies a predetermined processing on the image signal (D2) to output a processed image signal (D3); a selecting circuit (613) that selects the information corresponding to a predetermined pixel among the plurality of pixels in the processed image signal (D3) and outputs a selected image signal (D30); and a frame memory (614A) that temporarily stores the selected image signal (D30), reads out the selected image signals (D3O1, D3O2) to be fed to the predetermined pixel of the display device through signal feed lines (Bs1, Bs2).

Description

technical field [0001] The present invention relates to a display drive circuit for driving a display device having a plurality of pixels, and an image display device. Background technique [0002] Conventionally, in an image display device provided with a display device such as a liquid crystal panel having a plurality of pixels, a display driving circuit is used which supplies an image signal to the display device and drives the display device (writes to each pixel of the display device). into the image). [0003] Furthermore, as a display drive circuit, a technique has been proposed in which a frame memory is provided to drive a display device at a double speed in order to improve image quality, etc., and the same image is written to the display device twice in one vertical scanning period (for example, Reference Document 1: Japanese Patent Application Laid-Open No. 2004-177930). [0004] However, as display devices, various display devices having different display form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/36G09G3/36
CPCG09G3/2092G09G1/18G09G3/3648G09G2310/0275G09G2310/08G09G2340/0435G09G2360/18
Inventor 小山文夫
Owner SEIKO EPSON CORP
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