Electro-optic device and electronic device

Patent metadata

Field	Value
Publication number	US-9035862-B2
Application number	US-201113042736-A
Country	US
Kind code	B2
Filing date	Mar 8, 2011
Priority date	Mar 10, 2010
Publication date	May 19, 2015
Grant date	May 19, 2015

Abstract

An electro-optic device includes pixel electrodes; a data line block for providing an image signal to a first pixel electrode group and a second pixel electrode group in one column of pixel electrodes arrayed in a line in a first direction, the data line block being configured by data line pairs in which a pair of a first data line and a second data line extending in the first direction is arranged for each column; an image signal supplying unit for sequentially providing an image signal in time-series to each of the data line pairs configuring the data line block from one end of each of the data line pairs; and an inspection voltage supplying unit for supplying an inspection voltage from another end of each of the data line pairs each to the data line block and separately to each of the first data line and the second data line.

First claim

What is claimed is:

1. An electro-optic device, comprising:
a plurality of pixel electrodes arrayed along a first direction and a second direction intersecting the first direction;
a data line block for providing an image signal to each of a first pixel electrode group and a second pixel electrode group in one column of the plurality of pixel electrodes arrayed in a line in the first direction, the data line block being configured by a plurality of data line pairs in which a pair of a first data line and a second data line extending in the first direction is arranged for each column, wherein the first data line is arranged such that it overlaps the second data line in a plan view;
a common gate line corresponding to each of the plurality of data line pairs;
an image signal supplying unit for sequentially providing an image signal in time-series to each of the data line pairs configuring the data line block from one end of each of the plurality of data line pairs; and
an inspection voltage supplying unit for supplying an inspection voltage from another end of each of the plurality of data line pairs each to the data line block and separately to each of the first data line and the second data line.

2. The electro-optic device according to claim 1 , further comprising a control signal supply unit for providing a first control signal and a second control signal to the inspection voltage supplying unit, wherein
the inspection voltage supplying unit is configured to supply the inspection voltage to the first data line based on the first control signal, and supply the inspection voltage to the second data line based on the second control signal.

3. The electro-optic device according to claim 2 , wherein the second control signal is an inverted signal obtained by inverting a phase of the first control signal.

4. The electro-optic device according to claim 1 , wherein the inspection voltage supplying unit includes a shift register.

5. An electronic device comprising the electro-optic device according to claim 1 .

6. The electro-optic device according to claim 1 , further comprising a plurality of transistor pairs each including gate electrodes and respectively connected to the plurality of data line pairs, wherein
the gate electrodes of each of the plurality of transistor pairs are electrically connected to the common gate line.

7. An electro-optic device, comprising:
a plurality of pixel electrodes arrayed along a first direction and a second direction intersecting the first direction;
a data line block configured to supply an image signal to each of a first pixel electrode group and a second pixel electrode group in one column of the plurality of pixel electrodes arrayed in a line in the first direction, the data line block being configured by a plurality of data line pairs in which a pair of a first data line and a second data line extending in the first direction is arranged for each column;
an image signal supplying unit configured to sequentially supply an image signal in time-series to each of the data line pairs configuring the data line block from one end of each of the plurality of data line pairs;
an inspection voltage supplying unit configured to supply an inspection voltage from an opposite end of each of the plurality of data line pairs separately to each of the first data line and the second data line; and
a control signal supply unit configured to supply a first control signal and a second control signal to the inspection voltage supply unit, wherein
the inspection voltage supplying unit is configured to supply the inspection voltage to the first data line and the second data line based on the first control signal and the second control signal, respectively.

8. The electro-optic device according to claim 7 , wherein the first control signal and the second control signal are for controlling timings at which the inspection voltage supplying unit supplies the inspection voltage separately to the first data line and the second data line, respectively.

9. The electro-optic device according to claim 7 , wherein the second control signal is a phase-inverted signal of the first control signal.

10. The electro-optic device according to claim 7 , wherein the inspection voltage supplying unit includes a shift register.

11. An electronic device, comprising the electro-optic device according to claim 7 .

Assignees

• Sato Jun
• Seiko Epson Corp

Inventors

• Sato Jun

Classifications

• G09G3/3659

  the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes · CPC title

• G09G3/3688

  suitable for active matrices only · CPC title

• G09G2310/0297

  Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns · CPC title

• G09G3/006 Primary

  Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309) · CPC title