IP Library Granted Patent US 9,507,203
Granted Patent B2
US 9,507,203 · App. 14/198,186 · Granted Nov 29, 2016

Display device and electronic apparatus

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Quick Facts
Patent No.
US 9,507,203
App. No.
14/198,186
Granted
Nov 29, 2016
Kind
B2
Abstract

According to an aspect, a display device includes a plurality of pixels each including a plurality of sub-pixels. Each of the sub-pixels is arranged around center of the corresponding pixel and divided into a plurality of display regions to perform N-bit area coverage modulation by a combination of the display regions. The display regions are arranged in such a manner that: a display region corresponding to a least significant bit of the area coverage modulation is arranged closest to the center of the corresponding pixel; and a display region corresponding to a higher significant bit of the area coverage modulation is arranged around the center of the pixel and further from the center of the corresponding pixel (N is a natural number of 2 or more).

Claims (30)

1. A display device comprising:

a plurality of pixels each including a plurality of sub-pixels,

each of which is arranged around center of the corresponding pixel,

wherein each of the pixels is divided by first lines of gaps that radially extend from the center of the corresponding pixel toward outer edges of the corresponding pixel, into a plurality of display regions including a first display region and the second display region to perform N-bit area coverage modulation (N is a natural number of 2 or more) by a combination of the display regions, and

wherein the display regions are arranged in such a manner that:

the first display region corresponding to a least significant bit of the area coverage modulation is arranged closest to the center of the corresponding pixel, the first display region having first coupling parts at a position close to the center of the corresponding pixel; and

the second display region corresponding to a most significant bit of the area coverage modulation is arranged around the center of the pixel and further from the center of the corresponding pixel, the second display region having second coupling parts at a position at a corner of the corresponding pixel.

2. The display device according to claim 1 , further comprising:

a second planarization layer on which a plurality of electrodes corresponding to the respective display regions are formed;

a first planarization layer formed between the second planarization layer and a first conductor for applying a video signal to be given to the corresponding electrode; and

a second conductor arranged between the first planarization layer and the second planarization layer to electrically couple the first conductor to the corresponding electrode.

3. The display device according to claim 2 , further comprising:

a liquid crystal layer arranged between the electrodes and a counter electrode opposite to the electrodes, wherein

each of the first and second coupling parts is coupled to the corresponding second conductor, and

spacers for forming a space to form the liquid crystal layer are formed at the first coupling parts.

4. The display device according to claim 2 , wherein the electrodes reflect incident light.

5. The display device according to claim 1 , wherein the sub-pixels and the display regions corresponding to the least significant bit have a square shape.

6. An electronic apparatus comprising the display device according to claim 1 .

7. The display device according to claim 1 , wherein

each of the pixels is divided by the first lines into four equal areas corresponding to the sub-pixels, and

the sub-pixels are a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel.

8. The display device according to claim 7 , wherein

each of the sub-pixels are divided into the first display region, the second display region, and a third display region that corresponds to a higher significant bit of the area coverage modulation than the first display region and less significant bit of the area coverage modulation than the second display region.

9. The display device according to claim 8 , wherein

the third display region is arranged around the first display region,

the third display region has third coupling parts each arranged at a position that is a corner of the respective sub-pixel corresponding to a corner of the third display region.

10. The display device according to claim 1 , wherein

each of the pixels has a hexagonal shape,

each of the pixels is divided by the first lines into three equal areas corresponding to the sub-pixels, and

the sub-pixels are a first sub-pixel, a second sub-pixel, and a third sub-pixel.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 5, 2014
From: TAMAKI, MASAYA; FUKUNAGA, YOKO
To: JAPAN DISPLAY INC.
Reel/Frame 032358/0291 →