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Display device and driving method therefore

A display device, vertical drive technology, applied in the direction of static indicators, instruments, etc., can solve the problem of not eliminating coupling

Inactive Publication Date: 2005-02-02
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in 1F inversion, video signals of the same polarity are input during the field period, so the coupling is not eliminated

Method used

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  • Display device and driving method therefore
  • Display device and driving method therefore
  • Display device and driving method therefore

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Embodiment Construction

[0022] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. To clarify the background of the invention, first refer to Figures 1 to 3 Vertical crosstalk will be described.

[0023] figure 1 is a schematic circuit diagram illustrating a part of one pixel of an active matrix type display device. like figure 1 As shown, pixels are formed at intersections of signal lines and scan lines. exist figure 1 In the example shown, the pixel includes a liquid crystal cell Clc and a thin film transistor TFT for driving the liquid crystal cell Clc. The TFT has a gate electrode G connected to a scanning line, a source electrode S connected to a signal line, and a drain electrode D connected to a liquid crystal cell Clc. The liquid crystal cell Clc is composed of liquid crystal held between the pixel electrode and the counter electrode. The pixel electrode is connected to the drain electrode D of the TFT, and the ...

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Abstract

A display device according to the present invention includes: a horizontal driving circuit for sampling a video signal to signal lines Y in each horizontal period (1H); and a vertical driving circuit for sequentially scanning scanning lines X to select each row of pixels. A video signal is written to each selected row of pixels, and video signals for one field are retained. The horizontal driving circuit samples the video signal inverted in polarity in each H to the signal lines Y in each H, whereby an effect of capacitive coupling noise jumping from signal lines Y into pixels is cancelled. The vertical driving circuit sequentially scans the scanning lines X in every other H to select each row of pixels, and writes video signals of an identical polarity in the video signal inverted in polarity in each H to each selected row of pixels (1H thinned-out scanning) and retains the video signals of the identical polarity over one field.

Description

technical field [0001] The present invention relates to an active matrix type display device typified by a liquid crystal display (LCD) and a driving method thereof, in particular, to a technique for improving a field inversion driving system. Background technique [0002] The active matrix display device includes: scanning lines arranged in rows; signal lines arranged in columns; pixels arranged in a matrix corresponding to the intersections of the scanning lines and signal lines; A video signal is sampled to signal lines in column form in each horizontal period (H); and a vertical driving circuit for sequentially scanning scanning lines in row form to select rows (lines) of pixels. The active matrix type display device writes a video signal of each horizontal period into selected rows of pixels and holds the video signal for one field (1F). [0003] [Patent Document 1] [0004] Japanese Patent Publication No.2001-356740 [0005] Active matrix type display devices genera...

Claims

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Application Information

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IPC IPC(8): G02F1/133G09G3/20G09G3/36
CPCG09G2320/0209G09G3/3688G09G3/3614G09G3/3648G09G2310/0248G09G3/36
Inventor 大村幸一
Owner SONY CORP