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Driving circuit and driving method of electro-optical device, electro-optical device, and electronic apparatus

An electro-optic device and drive circuit technology, applied in instruments, static indicators, etc., can solve problems such as inability to write image signals, and cannot fully ensure the writing time of image signals

Inactive Publication Date: 2006-02-01
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in the processing of related signals, it is also possible to set almost all horizontal scanning periods as constant periods within one field period, but there is a problem that the last horizontal scanning period cannot achieve equal intervals.
[0008] In this way, when the predetermined equal intervals are not reached in the last horizontal scanning period, in the above-mentioned area scanning, for each of the plurality of partial areas, there is a scanning line corresponding to the last scanning signal supplied in the one field period. The corresponding pixel part may not be able to write the image signal normally
This is because, before the image signal is written in all the pixel portions corresponding to the scanning line to which the last scanning signal is supplied, the image signal to be written in the pixel portion corresponding to another scanning line adjacent to the scanning line occurs. The image signal is written in some pixels, or the writing time of the image signal cannot be ensured sufficiently
Especially when the edge of one partial area of ​​the area scan is located at the center or near the center of the image display area, the above-mentioned abnormal writing of the image signal may cause very obvious display defects.

Method used

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  • Driving circuit and driving method of electro-optical device, electro-optical device, and electronic apparatus
  • Driving circuit and driving method of electro-optical device, electro-optical device, and electronic apparatus
  • Driving circuit and driving method of electro-optical device, electro-optical device, and electronic apparatus

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no. 1 Embodiment approach

[0065] First, a first embodiment of the electro-optical device of the present invention will be described with reference to FIGS. 1 to 11 .

[0066]

[0067] 1 and 2, the overall configuration of a liquid crystal panel as an example of an electro-optic panel in an electro-optical device or a liquid crystal device of the present invention will be described. Here, FIG. 1 is a plan view showing the overall configuration of the liquid crystal panel of the TFT array substrate viewed from the counter substrate together with each component formed on the TFT array substrate, and FIG. 2 is a H-H' sectional view of FIG. 1 . Here, a liquid crystal panel of a TFT active matrix driving method with a built-in driving circuit is taken as an example.

[0068]In FIGS. 1 and 2 , in the liquid crystal panel 100 of this embodiment, the TFT array substrate 10 and the counter substrate 20 are arranged to face each other. A liquid crystal layer 50 is sealed between the TFT array substrate 10 and ...

no. 2 Embodiment approach

[0131] Next, a second embodiment of the electro-optical device of the present invention will be described. In the second embodiment, a liquid crystal device serving as an electro-optical device has a different configuration of a liquid crystal panel than in the first embodiment. Therefore, below, regarding the structure and operation of the liquid crystal device, refer to Figure 12 to Figure 14 , only the differences from the first embodiment will be described. In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and overlapping description is abbreviate|omitted.

[0132] First, refer to Figure 12 , and the configuration of the liquid crystal panel of the second embodiment will be described. Figure 12 It is a block diagram showing the circuit configuration of the liquid crystal panel in the second embodiment.

[0133] Such as Figure 12 As shown, on the liquid crystal panel 100, a dummy region 10c is provided in the image dis...

no. 3 Embodiment approach

[0140] Next, a third embodiment of the electro-optical device of the present invention will be described. In the third embodiment, the operation of the liquid crystal device as the electro-optical device is different from that in the first embodiment. Therefore, below, regarding the operation of the liquid crystal device, refer to Figure 14 ~ Figure 16 , only the differences from the first embodiment will be described. In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and overlapping description is abbreviate|omitted.

[0141] Figure 14 and Figure 16 , is an explanatory diagram conceptually explaining the area scan of the third embodiment, Figure 15 It is an explanatory diagram for explaining generation of the image signal VIDk by the image signal supply circuit of the third embodiment. In addition, in the third embodiment, the configuration of the liquid crystal device is the same as that of the first embodiment, so refe...

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PUM

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Abstract

The invention provides an electric light device capable of carrying out image display normally through zone scanning. The electric light device comprises: a scanning line drive circuit which supplies scanning signals to a plurality of scanning lines on partial zones sequentially and alternately regarding a plurality of partial zones obtained from a divided image display zone; and an image signal supply circuit which generates image signals to supply to a plurality of data wires based on displayed data in a disjunction mode of leaving a vertical retrace line interval in each field internal and in another mode of one horizontal scanning interval being divided by the total number n of the partial zones and respectively carrying out horizontal scanning of each partial zone. The scanning line drive circuit can supply the scanning signals in a mode of the supplying order of the scanning signal to a scanning line on one edge of a plurality of scanning signals in the image display zone being the last one in each field interval.

Description

technical field [0001] The present invention relates to the technical field of, for example, a driving circuit and a driving method for driving an electro-optical device such as a liquid crystal device, an electro-optical device having the driving circuit, and electronic equipment such as a liquid crystal projector having such an electro-optical device. Background technique [0002] An example of an electro-optical device driven by such a driving circuit is a liquid crystal device having data lines and scanning lines arranged vertically and horizontally in an image display region on a substrate, and pixel portions formed corresponding to their intersections. [0003] In such a liquid crystal device, for example, based on a source signal supplied from a personal computer or a video recorder, a display data generation circuit generates a horizontal synchronization signal, a vertical synchronization signal, and display data. Then, each pixel unit is driven by a drive circuit ba...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 吉元洋志
Owner SEIKO EPSON CORP