IP Library › Granted Patent US 8,208,102
Granted Patent B2
US 8,208,102 · App. 12/373,983 · Granted Jun 26, 2012

Display device having reflective region and transmissive region

Assignee: Sharp Kabushiki Kaisha
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Quick Facts
Patent No.
US 8,208,102
App. No.
12/373,983
Granted
Jun 26, 2012
Kind
B2
Abstract

The present invention is a display device which can provide bright display by both of reflective display and transmissive display without having a multi-gap structure and which can reduce a difference in response time between the reflective region and the transmissive region. The display device of the present invention is a display device including: a pair of substrates; a display medium interposed between the pair of substrates; and a pixel having a reflective region for performing reflective display and a transmissive region for performing transmissive display, wherein the display device includes a pixel electrode and a common electrode on one of the pair of substrates, a voltage is applied to the display medium through the pixel electrode and the common electrode, each of the pixel electrode and the common electrode is provided with a slit, the pixel electrode is provided with the slit in the reflective region and the transmissive region, and the common electrode is provided with the slit in the reflective region.

Claims (26)

1. A display device comprising:

a pair of substrates; a display medium interposed between the pair of substrates; and a pixel having a reflective region for performing reflective display and a transmissive region for performing transmissive display,

wherein the display device includes a pixel electrode and a common electrode on one of the pair of substrates,

a voltage is applied to the display medium through the pixel electrode and the common electrode,

each of the pixel electrode and the common electrode is provided with a slit,

the pixel electrode is provided with the slit in the reflective region and the transmissive region, and

the common electrode comprises a first portion in the reflective region and a second portion in the transmissive region, wherein the first portion of the common electrode in the reflective region comprises a plurality of slits defined in the common electrode, and the second portion of the common electrode in the transmissive region does not include a plurality of slits defined therein, so that the common electrode does not include a plurality of slits in the transmissive region of the pixel.

2. The display device according to claim 1 , wherein the common electrode is formed over the entire transmissive region.

3. The display device according to claim 1 , wherein the common electrode has a comb-tooth shape in the reflective region.

4. The display device according to claim 1 , wherein the slit of the common electrode is entirely surrounded by the common electrode.

5. The display device according to claim 1 , wherein the slit of the common electrode has a rectangular shape.

6. The display device according to claim 1 , wherein the slit of the common electrode has a rectangular shape having at least one bent part.

7. The display device according to claim 1 , wherein the slit of the common electrode has a zig-zag shape.

8. The display device according to claim 1 , wherein the slit of the common electrode has a circular arc shape.

9. The display device according to claim 1 , wherein the slit of the common electrode has a meandering shape.

10. The display device according to claim 1 , wherein the pixel electrode has a comb-tooth shape.

11. The display device according to claim 1 , wherein the slit of the pixel electrode is entirely surrounded by the pixel electrode.

12. The display device according to claim 1 , wherein the slit of the pixel electrode has a rectangular shape.

13. The display device according to claim 1 , wherein the slit of the pixel electrode has a rectangular shape having at least one bent part.

14. The display device according to claim 1 , wherein the slit of the pixel electrode has a zig-zag shape.

15. The display device according to claim 1 , wherein the slit of the pixel electrode has a circular arc shape.

16. The display device according to claim 1 , wherein the slit of the pixel electrode has a meandering shape.

17. The display device according to claim 1 , wherein the slit of the pixel electrode has substantially the same shape as a shape of the slit of the common electrode.

18. The display device according to claim 1 , wherein a width of the slit of the pixel electrode in the reflective region is larger than a width of the slit of the pixel electrode in the transmissive region.

19. The display device according to claim 1 , wherein a shield electrode is arranged between the pixel electrode and the common electrode in the reflective region.

20. The display device according to claim 19 , wherein the shield electrode is connected to ground.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 15, 2009
From: NISHIDA, KENJI
To: SHARP KABUSHIKI KAISHA
Reel/Frame 022114/0448 →
Priority Claims (1)
JP 2006-199667 · Jul 21, 2006 · national
Continuity (1)
Related Publication 20090262286A1 · Oct 22, 2009