Driving circuit and driving method for electro-optical device
A technology of electro-optical devices and driving circuits, which can be used in cathode ray tube indicators, instruments, static indicators, etc., and can solve problems such as insufficient writing
Inactive Publication Date: 2009-07-29
SEIKO EPSON CORP
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Problems solved by technology
[0013] However, if the technique described in the above-mentioned Japanese Patent Laid-Open No. 5-313608 is used, there is a problem that the time available for pixel writing becomes half of the usual time, and the writing becomes insufficient.
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[0048] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Figure 1 to Figure 15 Regarding Embodiment 1 of the present invention, figure 1 is a block diagram showing the electro-optical device of this embodiment, figure 2 is a schematic configuration diagram of a liquid crystal panel used when this embodiment is applied to a liquid crystal device, image 3 is along figure 2 The profile of the H-H line, Figure 4 is an equivalent circuit diagram of a plurality of pixels formed in a matrix in a pixel region of a liquid crystal panel, Figure 5 is shown figure 1 The circuit diagram of the specific structure of the scan driver 104a in Figure 6 yes Figure 5 The detailed circuit diagram of the main part in, Figure 7A to Figure 7C It is a timing chart for explaining the operation of the liquid crystal device, Figure 8A to Figure 8L is removed and shows the Figure 7A to Figure 7C The timing diagram of the main ...
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The image rearrangement part synthesizes the input image and its delayed signal, and arranges the image with a horizontal frequency n times the horizontal frequency of the input image in a signal arrangement mode corresponding to the scanning of the scan driver to obtain a written image. The scan driver selects n scan lines spaced apart from each other in one horizontal period of an input image, and drives pixels with image signals of the same polarity between most adjacent lines. Accordingly, it is possible to prevent the occurrence of a lateral electric field by plane inversion driving. Writing of an image signal of the other polarity can be performed adjacent to a blanking period of one polarity. However, even in this case, for example, if a blanking signal with a low level is used instead of the blanking signal, the writing of the image signal during the blanking period will not be affected by the ghost image of the high black level, and the deterioration of the image quality can be prevented. deteriorating.
Description
technical field [0001] The present invention relates to a driving circuit and a driving method for an electro-optical device which reduce crosstalk (intermodulation distortion) and display unevenness. Background technique [0002] Electro-optic devices, for example, liquid crystal display devices using liquid crystals as electro-optic substances, have been widely used as display devices in place of cathode ray tubes (CRTs) in display units of various information processing devices, liquid crystal televisions, and the like. [0003] Such a liquid crystal display device, for example, can be composed of pixel electrodes arranged in a matrix, an element substrate provided with switching elements such as TFTs (Thin Film Transistors) connected to the pixel electrodes, and an opposing electrode formed with the pixel electrodes. The counter substrate of the electrode and the liquid crystal as an electro-optic substance filled between these two substrates are constituted. [0004] T...
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IPC IPC(8): G09G3/36G02F1/133G09G5/00G09G5/399
CPCG09G2310/061G09G3/3611G09G2310/0297G09G3/3614G09G2310/0232G09G2360/18G09G3/3688G09G2320/0209G09G2320/0233G09G3/3677G09G2340/0435G09G5/399G09G3/3648G09G3/20G09G3/36
Inventor 保坂宏行饭坂英仁
Owner SEIKO EPSON CORP