ELECTROOPTIC DEVICE AND ELECTRONIC DEVICE

• US 20080158118A1
• Filed: 09/12/2007
• Published: 07/03/2008
• Est. Priority Date: 10/11/2006
• Status: Active Grant

• Current Assignee: 138 East LCD Advancements Limited (Vector Capital Corporation)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: YAMADA, Shuhei, ONO, Takehiro
• Granted Patent: US 8,223,287 B2
• Time in Patent Office: Days
• US Class Current: 345/87
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 2201/128 field shaping
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2320/0209 Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
• CPC Class Codes: G09G 2320/0257 Reduction of after-image effects
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general

Abstract

An electrooptic device includes two adjacent pixel electrodes. A potential that is different from the potential of the first and second pixel electrodes is applied to an area between the adjacent pixel electrodes.

Claims

1. An electrooptic device comprising:

a first substrate and a second substrate;

an electrooptic material sandwiched between the first and second substrates; and

a first pixel electrode and a second pixel located between the electrooptic material and the first substrate, the first and second pixel electrodes being supplied with different potentials, the first pixel electrode and the second pixel being located next to each other as viewed from the direction normal to the surface of the first substrate, the first pixel electrode having a first edge and the second pixel electrode having a second edge, the first edge and the second edge facing each other and separated by an interval, at least a part of the first edge of the first pixel electrode having a recess, at least a part of the second edge of the second pixel electrode having a protrusion, the protrusion protruding from the second edge into a region defined by the recess.

2. The electrooptic device according to claim 1, wherein the recess and the protrusion are the same in plan view.

3. The electrooptic device according to claim 1, further comprising:

a counter electrode formed on the second substrate and facing the first pixel electrode and the second pixel electrode, the different potentials have different polarities with reference to a common potential applied to the counter electrode.

10. An electronic device comprising the electrooptic device according to claim 1.

4. An electrooptic device comprising:

a first substrate and a second substrate;

an electrooptic material sandwiched between the first and second substrates;

a first pixel electrode and a second pixel located between the electrooptic material and the first substrate, the first pixel electrode and the second pixel being located next to each other as viewed from the direction normal to the surface of the first substrate and being separated by a region extending between the first pixel electrode and the second pixel electrode, the first and second pixel electrodes being supplied with different potentials; and

a conducting layer formed in island shapes that are isolated from each other, at least one of the island shapes overlapping the region extending between the first pixel electrode and the second pixel electrode, the conducting layer being supplied with a first potential different from the potentials supplied to the first pixel electrode and the second pixel electrode.

5. The electrooptic device according to claim 4, further comprising:

a counter electrode formed on the second substrate and facing the first pixel electrode and the second pixel electrode;

wherein the first potential is different from a common potential applied to the counter electrode.

6. The electrooptic device according to claim 5, wherein

the respective potentials of the first pixel electrode and the second pixel electrode have different polarities with reference to the common potential.

7. The electrooptic device according to claim 4, wherein

the conducting layer is formed on the first substrate and on the same layer as the first pixel electrode and the second pixel electrode.

8. The electrooptic device according to claim 7, wherein

the first pixel electrode and the second pixel electrode are formed on the same layer in such a manner as to increase in the interval therebetween so that the width of part of the region is increased.

9. The electrooptic device according to claim 4, further comprising:

an image signal line formed on the first substrate and under the first pixel electrode and the second pixel electrode, for feeding image signals to the first pixel electrode and the second pixel electrode; and

a connecting portion that electrically connects the image signal line and the conducting layer.

11. An electronic device comprising the electrooptic device according to claim 4.