IP Library Granted Patent US 7,486,265
Granted Patent B2
US 7,486,265 · App. 11/260,247 · Granted Feb 3, 2009

Electro-optical device, method of driving electro-optical device, and electronic apparatus

Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 7,486,265
App. No.
11/260,247
Granted
Feb 3, 2009
Kind
B2
Abstract

A method of driving an electro-optical device includes dividing a vertical scanning period into first and second sub-fields of individual colors; stopping irradiation of light in the first sub-field; almost simultaneously selecting one scanning line and one or more adjacent scanning lines in a predetermined order; supplying to pixels data signals designating a gray-scale level of the color corresponding to one field, as data signals corresponding to the pixels located at the one scanning line among the selected scanning lines during each selection of the scanning lines; in the second sub-field, controlling the light so as to irradiate light of a corresponding color; selecting scanning lines other than the one scanning line; and supplying to pixels data signals designating a gray-scale level of the color corresponding to the one field, as data signals corresponding to the pixels of the selected scanning line during each selection of the scanning lines.

Claims (22)

1. A method of driving an electro-optical device, the electro-optical device including a plurality of pixels arranged to correspond to intersections between a plurality of scanning lines and a plurality data lines, each pixel maintaining a data signal supplied to a corresponding data line when a corresponding scanning line is selected, and a light source irradiating light of at least three different colors onto the individual pixels, the method comprising:

dividing a vertical scanning period into fields for the individual colors, and each field into a first sub-field and a second sub-field,

during the first sub-field of one field corresponding to any one color,

stopping the light source from irradiating light;

selecting one scanning line and one or more scanning lines adjacent to the one scanning line at substantially the same time;

supplying, through the data lines, data signals corresponding to the pixels located at the one scanning line to pixels corresponding to the plurality of selected scanning lines;

during the second sub-field subsequent to the first sub-field,

controlling the light source so as to irradiate light of a corresponding color;

selecting a scanning line other than the one scanning line among the scanning lines selected during the first sub-field; and

supplying, through the data lines, data signals corresponding to the pixels of the selected scanning line to pixels corresponding to the selected scanning line.

2. The method of driving an electro-optical device according to claim 1 , further comprising:

selecting one scanning line of scanning lines of odd and even rows and a scanning line adjacent to the one scanning line at almost the same time in the predetermined order in the first sub-field; and

selecting the other scanning line of the scanning lines of odd and even rows in the predetermined order in the second sub-field.

3. The method of driving an electro-optical device according to claim 2 , further comprising:

repeating with a predetermined period a vertical scanning period of selecting the scanning lines of odd rows in the predetermined order in the first sub-field and selecting the scanning lines of even rows in the predetermined order in the second sub-field, and a vertical scanning period of selecting the scanning lines of even rows in the predetermined order in the first sub-field and selecting the scanning lines of odd rows in the predetermined order in the second sub-field.

4. An electro-optical device comprising:

a plurality of pixels that are arranged to correspond to intersections between a plurality of scanning lines and a plurality data lines, each pixel maintaining a data signal supplied to a corresponding data line when a corresponding scanning line is selected, a vertical scanning period being divided into fields for the individual colors, and each field being divided into a first sub-field and a second sub-field;

a light source that irradiates light of at least three different colors onto the individual pixels;

a control circuit that controls the light source such that irradiation of light from the light source is stopped during a first sub-field of a field corresponding to any one color and light of the corresponding color is irradiated during a second sub-field subsequent to the first sub-field;

a scanning line driving circuit that selects one scanning line and one or more scanning lines adjacent to the one scanning line at substantially the same time during the first sub-field of the field corresponding to any one color, and selects scanning a line other than the one scanning line during the second sub-field subsequent to the first sub-field; and

a data line driving circuit which supplies through the data lines data signals corresponding to the pixels located at the one scanning line to pixels corresponding to the plurality of selected scanning lines, when the one scanning line and one or more scanning lines adjacent to the one scanning line are selected during the first sub-field, and supplies through the data lines data signals corresponding to the pixels located at the selected scanning line to pixels corresponding to the selected scanning line, when the scanning line other than the one scanning line is selected during the second sub-field subsequent to the first sub-field.

5. An electronic apparatus comprising the electro-optical device according to claim 4 .

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 28, 2019
From: SEIKO EPSON CORPORATION
To: 138 EAST LCD ADVANCEMENTS LIMITED
Reel/Frame 050197/0212 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 28, 2005
From: HOSAKA, HIROYUKI; IISAKA, HIDEHITO
To: SEIKO EPSON CORPORATION
Reel/Frame 017147/0099 →
Priority Claims (2)
JP 2004-326274 · Nov 10, 2004 · national
JP 2005-244735 · Aug 25, 2005 · national
Continuity (1)
Related Publication 20060125942A1 · Jun 15, 2006