Display and electronic apparatus

Patent metadata

Field	Value
Publication number	US-8952374-B2
Application number	US-201414192934-A
Country	US
Kind code	B2
Filing date	Feb 28, 2014
Priority date	Mar 25, 2013
Publication date	Feb 10, 2015
Grant date	Feb 10, 2015

Abstract

A display device includes pixels, each including a set of sub-pixels. A first subset of the pixels may each include white, green, and blue sub-pixels, but not a red sub-pixel. A second subset of the pixels may each include white, green, and red sub-pixels, but not a blue sub-pixel. The pixels may alternate between the first subset and the second subset in at least one direction.

First claim

What is claimed is:

1. A display device comprising:
a plurality of pixels on a substrate, each pixel of the plurality of pixels including a set of sub-pixels each being one of:
first sub-pixels configured to emit light of a first color,
second sub-pixels configured to emit light of a second color,
third sub-pixels configured to emit light of a third color, and
fourth sub-pixels configured to emit light of a fourth color; and

a drive section that is configured to drive the plurality of pixels,
wherein a first subset of the plurality of pixels each includes one of the first sub-pixels, one of the second sub-pixels, and one of the third sub-pixels, but not one of the fourth sub-pixels, and a second subset of the plurality of pixels each includes one of the first sub-pixels, one of the second sub-pixels, and one of the fourth sub-pixels, but not one of the third sub-pixels, and
the plurality of pixels alternate, in at least one of a column direction and a row direction, between the first subset and the second subset.

2. The display device of claim 1 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting element that includes an anode electrode, and
a corresponding pixel circuit that is connected to the anode electrode and configured to drive the light emitting element, and

respective layout regions of the anode electrodes of the first and second sub-pixels do not coincide with the respective layout regions of their corresponding pixel circuits.

3. The display device of claim 1 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting element that includes an anode electrode, and
a corresponding pixel circuit that is connected to the anode electrode and configured to drive the light emitting element, and

for each of the plurality of pixels, a layout region of the anode electrode of the first sub-pixel overlaps, from a plan perspective, a layout region of the pixel circuit of the second sub-pixel, and a layout region of the anode electrode of the second sub-pixel overlaps, from a plan perspective, a layout region of the pixel circuit of the first sub-pixel.

4. The display device of claim 3 ,
wherein for each pixel of the first subset, a layout region of the anode electrode of the third sub-pixel does not overlap, from a plan perspective, a layout region of the pixel circuit of the first sub-pixel or a layout region of the pixel circuit of the second sub-pixel, and
for each pixel of the second subset, a layout region of the anode electrode of the fourth sub-pixel does not overlap, from a plan perspective, a layout region of the pixel circuit of the first sub-pixel or a layout region of the pixel circuit of the second sub-pixel.

5. The display device of claim 1 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting element that includes an anode electrode, and
a corresponding pixel circuit that is connected to the anode electrode and configured to drive the light emitting element, and

respective layout regions of the anode electrodes of first and second sub-pixels extend longitudinally in a first direction, and respective layout regions of the pixel circuits of the first and second sub-pixels extend longitudinally in a second direction different from the first direction.

6. The display device of claim 1 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting element that includes an anode electrode, and
a corresponding pixel circuit that is connected to the anode electrode and configured to drive the light emitting element, and

respective layout regions of the anode electrodes of the first, second, third, and fourth sub-pixels do not overlap, from a plan perspective, any one of data lines that supply video signal voltages to the plurality of pixels.

7. The display device of claim 1 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting element that includes an anode electrode, and
a corresponding pixel circuit that is connected to the anode electrode and configured to drive the light emitting element, and

respective layout regions of the anode electrodes of the first, second, third, and fourth sub-pixels each overlap, from a plan perspective, exactly one of data lines that supply video signal voltages to the plurality of pixels.

8. The display device of claim 7 ,
wherein for each of the plurality of pixels, the layout region of the anode electrode of the first sub-pixel overlaps, from a plan perspective, the layout region of the pixel circuit of the second sub-pixel, and the layout region of the anode electrode of the second sub-pixel overlaps, from a plan perspective, the layout region of the pixel circuit of the first sub-pixel.

9. The display device of claim 1 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting element that includes an anode electrode, and
a corresponding pixel circuit that is connected to the anode electrode and configured to drive the light emitting element, and

respective layout regions of the anode electrodes of the first and second sub-pixels each overlap, from a plan perspective, exactly three of data lines that supply video signal voltages to the plurality of pixels, and
respective layout regions of the anode electrodes of the third and fourth sub-pixels each do not overlap, from a plan perspective, any one of the data lines.

10. The display device of claim 1 ,
wherein aspect ratios of respective layout regions of the anode electrodes of the first and second sub-pixels are all smaller than aspect ratios of respective layout regions of the anode electrodes of the third and fourth sub-pixels, where the aspect ratio of a layout region is the length of a longest side thereof divided by the length of the shortest side thereof.

11. The display device of claim 1 ,
wherein respective layout regions of the anode electrodes of the first and second sub-pixels extend longitudinally in a first direction, and respective layout regions of the anode electrodes of the third and fourth sub-pixels extend longitudinally in a second direction different from the first direction.

12. The display device of claim 1 ,
wherein the first color is green, the second color is white, the third color is red, and the fourth color is blue.

13. The display device of claim 12 ,
wherein the area of the layout region of the anode electrode of each of the blue and red sub-pixels is greater than the area of the layout region of the anode electrode of each of the green sub-pixels, which are each greater than or equal to the area of the layout region of each of the anode electrodes of the white sub-pixels.

14. An electronic apparatus comprising the display device of claim 1 .

15. The electronic apparatus of claim 14 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting element that includes an anode electrode, and
a corresponding pixel circuit that is connected to the anode electrode and configured to drive the light emitting element, and

respective layout regions of the anode electrodes of the first and second sub-pixels do not coincide with the respective layout regions of their corresponding pixel circuits.

16. The electronic apparatus of claim 14 ,
wherein, for each of the plurality of pixels, each of the sub-pixels included therein has:
a light emitting ele

Assignees

• Sony Corp

Inventors

• Jinta Seiichiro
• Izumi Gaku

Classifications

• G09G2340/06

  Colour space transformation · CPC title

• G09G2300/0866

  by means of changes in the pixel supply voltage · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title