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Electrooptical apparatus, driving device and method for electrooptical apparatus, and electronic equipment

An electro-optical device, potential technology, applied in the direction of instruments, static indicators, etc., to reduce the effect of flicker

Inactive Publication Date: 2008-08-20
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method cannot prevent the occurrence of pixel color unevenness and flicker caused by the parasitic capacitance between the pixel electrode of the m+1th row and the drain of the TFT of the mth row, the scanning line, the capacitance line, etc.

Method used

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  • Electrooptical apparatus, driving device and method for electrooptical apparatus, and electronic equipment
  • Electrooptical apparatus, driving device and method for electrooptical apparatus, and electronic equipment
  • Electrooptical apparatus, driving device and method for electrooptical apparatus, and electronic equipment

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no. 1 Embodiment

[0053] refer to Figure 1 to Figure 5 A first embodiment of the electro-optical device of the present invention will be described.

[0054] First, refer to Figure 1 to Figure 3 The basic structure of the electro-optical device in the first embodiment will be described. here, figure 1 It is a circuit diagram showing equivalent circuits of various elements, wiring, and the like on a plurality of pixels formed in a matrix forming an image display region of an electro-optical device together with peripheral driving circuits. figure 2 It is a plan view of a plurality of adjacent pixel groups of a TFT array substrate on which data lines, scanning lines, pixel electrodes, etc. are formed. image 3 is a timing chart of data signals, scan signals, and the like in the comparative example.

[0055] exist figure 1 In this embodiment, pixel electrodes 9a and TFTs 30 for switching and controlling the pixel electrodes 9a are respectively formed on a plurality of pixels in a matrix tha...

no. 2 Embodiment

[0086] Next, refer to Figure 6 and Figure 7 A second embodiment of the electro-optical device will be described. Here, FIG. 6 is a timing chart showing timings of data line driving signals and scanning signals in the second embodiment, Figure 7 It is a block diagram of the middle wave circuit and the scanning signal supply circuit in this embodiment configured to generate scanning signals of two systems.

[0087] In the second embodiment, the pixel electrodes 9a in the same row are driven with potentials of the same polarity, and 1H inversion driving is performed in which the polarity of the related potential is reversed for each row in a field period. That is, the image signal supplied from the data signal supply circuit 101 is a signal in which the polarity is inverted for each line in units of fields. Thus, deterioration due to application of a DC voltage to the liquid crystal can be effectively avoided. Regarding the basic structure of the electro-optical device of th...

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PUM

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Abstract

A plurality of pixel electrodes, TFTs to control the switching of the pixel electrodes, scan lines to supply scan lines to the gates of the TFTs, and data lines to supply image signals to the pixel electrodes via the TFTs when the TFTs are put into an ON state are provided on a substrate. The scan-signal supply circuit holds the scan signals to an intermediate potential for a predetermined period in the middle of changing the potential of the scan signals between a high potential that puts the TFTs into the ON state and a low potential that puts the TFTs into the OFF state.

Description

technical field [0001] The present invention belongs to the technical field of electro-optic devices such as liquid crystal devices, in particular, belongs to the method of providing a transistor for switching and controlling pixel electrodes arranged in a matrix and supplying scanning signals in line order to the scanning lines arranged in each pixel row so as to perform effective operation. The technical field of electro-optical devices in the form of source matrix driving, driving devices suitable for use in such electro-optical devices, and electronic devices equipped with such electro-optical devices. Background technique [0002] In such an electro-optical device, a pixel electrode, a thin film transistor (hereinafter appropriately referred to as TFT) for switching the pixel electrode, a scanning line for supplying a scanning signal to the gate of the TFT, and a gate of the TFT are arranged on a substrate. A data line for supplying an image signal, a storage capacitor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G09G3/36G09G3/20
Inventor 青木透石井贤哉
Owner SEIKO EPSON CORP