Display device and electronic device

Patent metadata

Field	Value
Publication number	US-9887236-B2
Application number	US-201514815329-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Sep 30, 2005
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

To improve color reproduction areas in a display device having light-emitting elements. A display region has a plurality of picture elements. Each picture element includes: first and second pixels each including a light-emitting element which has a chromaticity whose x-coordinate in a CIE-XY chromaticity diagram is 0.50 or more; third and fourth pixels each including a light-emitting element which has a chromaticity whose y-coordinate in the diagram is 0.55 or more; and fifth and sixth pixels each including a light-emitting element which has a chromaticity whose x-coordinate and y-coordinate in the diagram are 0.20 or less and 0.25 or less, respectively. The light-emitting elements in the first and second pixels have different emission spectrums from each other; the light-emitting elements in the third and fourth pixels have different emission spectrums from each other; and the light-emitting elements in the fifth and sixth pixels have different emission spectrums from each other.

First claim

What is claimed is:

1. A display device comprising:
a plurality of pixels comprising:
a first pixel comprising a light-emitting element, the light-emitting element having a chromaticity whose x-coordinate in a CIE-XY chromaticity diagram is 0.50 or more;
a second pixel and a third pixel each comprising a light-emitting element, the light-emitting element having a chromaticity whose y-coordinate in the CIE-XY chromaticity diagram is 0.55 or more; and
a fourth pixel and a fifth pixel each comprising a light-emitting element, the light-emitting element having a chromaticity whose x-coordinate and y-coordinate in the CIE-XY chromaticity diagram are 0.20 or less and 0.25 or less, respectively,

wherein the first pixel, the second pixel and the fourth pixel are arranged in a first row in a first direction,
wherein the third pixel and the fifth pixel are arranged in a second row in the first direction,
wherein the first row is adjacent to the second row,
wherein the first pixel is adjacent to the second pixel,
wherein the second pixel is adjacent to the fourth pixel,
wherein the third pixel is adjacent to the fifth pixel,
wherein the second pixel and the third pixel are shifted from each other in the first direction,
wherein the fourth pixel and the fifth pixel are shifted from each other in the first direction,
wherein the fourth pixel and the third pixel overlap each other in a line in a second direction, and
wherein the second direction is vertical to the first direction.

2. The display device according to claim 1 , wherein the light-emitting elements provided in the fourth pixel and the fifth pixel have different thickness from each other.

3. The display device according to claim 1 , wherein the fourth pixel and the fifth pixel have different emission spectrums.

4. The display device according to claim 1 , wherein the fourth pixel and the fifth pixel emit light with colors of different coordinates in the CIE-XY chromaticity diagram.

5. The display device according to claim 1 , wherein the fourth pixel and the fifth pixel have light-emitting regions with different area dimensions from each other.

6. The display device according to claim 1 , wherein the light-emitting element is an electroluminescence element.

7. The display device according to claim 1 further comprising a substrate,
wherein the plurality of pixels are over the substrate, and
wherein the substrate is a flexible substrate.

8. The display device according to claim 1 , wherein the display device is used in an electronic device selected from the group consisting of a video camera, a digital camera, a goggle display, a navigation system, an audio reproducing device, a computer, a game machine, a mobile computer, a mobile phone, a portable game machine, an electronic book, and an image reproducing device.

9. A display module comprising the display device according to claim 1 , comprising at least one of an FPC and a housing.

10. An electronic device comprising the display module according to claim 9 , comprising at least one of a display portion, a battery, an antenna, a speaker and an operating key.

11. The display device according to claim 1 , wherein each of the first to fifth pixels includes a transistor comprising an oxide semiconductor.

12. A display device comprising:
a first pixel comprising a light-emitting element, the light-emitting element having a chromaticity whose x-coordinate and y-coordinate in a CIE-XY chromaticity diagram are 0.6 or more and 0.35 or less, respectively;
a second pixel and a third pixel each comprising a light-emitting element, the light-emitting element having a chromaticity whose x-coordinate and y-coordinate in the CIE-XY chromaticity diagram are 0.3 or less and 0.6 or more, respectively; and
a fourth pixel and a fifth pixel each comprising a light-emitting element, the light-emitting element having a chromaticity whose x-coordinate and y-coordinate in the CIE-XY chromaticity diagram are 0.15 or less and 0.2 or less, respectively,
wherein the first pixel, the second pixel and the fourth pixel are arranged in a first row in a first direction,
wherein the third pixel and the fifth pixel are arranged in a second row in the first direction,
wherein the first row is adjacent to the second row,
wherein the first pixel is adjacent to the second pixel,
wherein the second pixel is adjacent to the fourth pixel,
wherein the third pixel is adjacent to the fifth pixel,
wherein the second pixel and the third pixel are shifted from each other in the first direction,
wherein the fourth pixel and the fifth pixel are shifted from each other in the first direction,
wherein the fourth pixel and the third pixel overlap each other in a line in a second direction, and
wherein the second direction is vertical to the first direction.

13. The display device according to claim 12 , wherein the light-emitting elements provided in the fourth pixel and the fifth pixel have different thickness from each other.

14. The display device according to claim 12 , wherein the fourth pixel and the fifth pixel have different emission spectrums.

15. The display device according to claim 12 , wherein the fourth pixel and the fifth pixel emit light with colors of different coordinates in the CIE-XY chromaticity diagram.

16. The display device according to claim 12 , wherein the fourth pixel and the fifth pixel have light-emitting regions with different area dimensions from each other.

17. The display device according to claim 12 , wherein the light-emitting element is an electroluminescence element.

18. The display device according to claim 12 further comprising a substrate,
wherein the first to fifth pixels are over the substrate, and
wherein the substrate is a flexible substrate.

19. The display device according to claim 12 , wherein the display device is used in an electronic device selected from the group consisting of a video camera, a digital camera, a goggle display, a navigation system, an audio reproducing device, a computer, a game machine, a mobile computer, a mobile phone, a portable game machine, an electronic book, and an image reproducing device.

20. A display module comprising the display device according to claim 12 , comprising at least one of an FPC and a housing.

21. An electronic device comprising the display module according to claim 20 , comprising at least one of a display portion, a battery, an antenna, a speaker and an operating key.

22. The display device according to claim 12 , wherein each of the first to fifth pixels includes a transistor comprising an oxide semiconductor.

Assignees

• Semiconductor Energy Lab

Inventors

• Kimura Hajime
• Miyaguchi Atsushi

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H01L27/3216

  Electricity · mapped topic

• G09G3/2074

  using sub-pixels · CPC title

• G09G2300/0452

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

• G09G3/2003

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title