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Driving circuit, display device, and driving method for the display device

A driving circuit and driving method technology, applied to the driving circuit, can solve the problems of increasing the time constant and spending a lot of time on data lines, etc., and achieve the effects of suppressing heat, saving power consumption, and suppressing attenuation

Active Publication Date: 2007-01-24
RENESAS ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If adjacent data lines in all data lines are shorted through switches and connected to the common electrode voltage source, as many on-resistances as switches are used, the time constant increases and it takes a lot of time to change the voltage of the data lines to Problems with setting to mid-level

Method used

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  • Driving circuit, display device, and driving method for the display device
  • Driving circuit, display device, and driving method for the display device
  • Driving circuit, display device, and driving method for the display device

Examples

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no. 1 example

[0026] refer to figure 1 , to describe a display device according to a first embodiment of the present invention. Here, an active matrix type liquid crystal display device is illustrated as an example of the display device. In this embodiment, a dot inversion driving method is used. figure 1 is a schematic diagram showing the structure of the liquid crystal display device of this embodiment. The liquid crystal display device of this embodiment includes a liquid crystal panel 22 and a data line driving circuit 25 . Incidentally, figure 1 The scanning line driving circuit for providing scanning signals, the backlight for providing plane light to the back of the liquid crystal panel 22, etc. are omitted in the drawing. In addition, for the convenience of illustration, figure 1 1 x 8 pixels are shown.

[0027]Incidentally, the data line drive circuit 25 may be externally connected to the liquid crystal panel 22; this circuit may be formed on a TFT array substrate connectable...

no. 2 example

[0061] refer to Figure 4 , to describe a display device according to a second embodiment of the present invention. Figure 4 is a schematic diagram showing the structure of the liquid crystal display device of this embodiment. The liquid crystal display device of this embodiment includes a liquid crystal panel 22 and a data line driving circuit 25 . exist Figure 4 among those with figure 1 The same components are denoted by the same reference numerals, and repeated descriptions thereof are omitted. Incidentally, in Figure 4 In this case, a scanning line driving circuit for supplying scanning signals, a backlight for supplying planar light to the rear side of the liquid crystal panel 22, and the like are omitted. Also, for simplicity of display, Figure 4 1 x 8 pixels are shown. The structural difference between this embodiment and the first embodiment lies in the arrangement of the buffer unit and the switching unit in the data line driving circuit 25 . More specifi...

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PUM

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Abstract

A driving circuit according to an embodiment of the invention includes: a switching unit for sequentially switching between a first operation of applying a positive gray-scale voltage to odd-numbered data lines and applying a negative gray-scale voltage to even-numbered data lines and a second operation of applying a negative gray-scale voltage to odd-numbered data lines and applying a positive gray-scale voltage to the even-numbered data lines; a plurality of short-circuit switches for short-circuiting a pair of adjacent odd-numbered data lines and a pair of adjacent even-numbered data lines to produce a plurality of pairs of short-circuited data lines in a switching period between the first operation and the second operation; and a plurality of common node-connected switches corresponding to the plurality of data line pairs and short-circuiting a corresponding one of the data line pairs to a common node.

Description

technical field [0001] The present invention relates to a driving circuit and a driving method for a display device having a plurality of electrodes, such as a liquid crystal display device, and a display device using the same. Background technique [0002] With the recent development of an advanced visual and information society and the spread of multimedia systems, flat panel display devices such as liquid crystal display devices have become more and more important. Since a liquid crystal display device has advantages of low power consumption, thin shape, and light weight, it has been widely used as a display device for portable devices. [0003] A liquid crystal display device includes a liquid crystal panel that displays images and a driving circuit that drives the liquid crystal panel. The active matrix liquid crystal panel includes: a device substrate, an opposite substrate, and liquid crystal filled between the two substrates. Scanning lines are formed in a horizont...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 横田纯也
Owner RENESAS ELECTRONICS CORP
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