Display device

Patent metadata

Field	Value
Publication number	US-9543369-B2
Application number	US-201615063793-A
Country	US
Kind code	B2
Filing date	Mar 8, 2016
Priority date	Mar 17, 2015
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A display device includes a plurality of pixels each including a light emitting region; and a light blocking layer provided on a side of the plurality of pixels on which light is output. In each of the plurality pixels, the light blocking layer has a plurality of openings allowing light from the light emitting region to be output. In one embodiment, in the light blocking layer, the openings adjacent to each other may be located line-symmetrically. In one embodiment, in the light blocking layer, the openings adjacent to each other may be located point-symmetrically.

First claim

The invention claimed is:

1. A display device, comprising:
a substrate;
a pixel including a plurality of sub pixels each including a light emitting region, the pixel being provided on the substrate;
a bank demarcating the plurality of sub pixels and exposing the light emitting regions; and
a light blocking layer located on an opposite side of the pixel from the substrate;
wherein:
the light emitting regions are L-shaped; and
the light blocking layer covers at least a bending portion of each of the light emitting regions and divides each of the light emitting regions into a plurality of regions, the bending portion making the light emitting regions L-shaped.

2. The display device according to claim 1 , wherein:
the sub pixels included in the pixel are four rectangular sub pixels located in a matrix of two rows by two columns; and
each light emitting region included in each of the four sub pixels is located so as to have the bending portion facing a corner of the rectangular sub pixel, and is located along a part of an outer peripheral edge of the pixel.

3. The display device according to claim 1 , wherein:
the sub pixels included in the pixel are four rectangular sub pixels located in a matrix of two rows by two columns;
the four sub pixels include:
a first sub pixel and a second sub pixel located on a first diagonal line of the pixel; and
a third sub pixel and a fourth sub pixel located on a second diagonal line of the pixel different from the first diagonal line;
a first light emitting region of the first sub pixel and a second light emitting region of the second sub pixel each include:
a first region extending in a first direction from an intersection of the first sub pixel and the second sub pixel;
the bending portion located at an end of the first region, the end being opposite to the intersection; and
a second region extending in a second direction crossing the first direction from the bending portion along an outer peripheral edge of the pixel; and
a third light emitting region of the third sub pixel and a fourth light emitting region of the fourth sub pixel each include:
a third region extending in the second direction from the intersection;
the bending portion located at an end of the third region, the end being opposite to the intersection; and
a fourth region extending in the first direction from the bending portion along the outer peripheral edge of the pixel.

4. The display device according to claim 1 , further comprising:
a counter substrate facing the substrate; and
a color filter and the light blocking layer provided on the counter substrate;
wherein the light blocking layer is located between the color filter and the counter substrate.

5. The display device according to claim 1 , wherein the light emitting region is divided into two line-symmetrical regions.

6. The display device according to claim 1 , wherein the light blocking layer has openings at positions not overlapping the light emitting regions.

7. The display device according to claim 1 , wherein:
the sub pixels each include a pixel electrode, a light emitting layer provided on the pixel electrode, and a common electrode provided on the light emitting layer; and
the pixel electrode overlaps the plurality of regions divided by the light blocking layer.

Assignees

• Japan Display Inc

Inventors

• Lee Haochun
• Sato Toshihiro
• Adachi Masaya
• Sakamoto Shigeru

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• H10K59/351 Primary

  comprising more than three subpixels, e.g. red-green-blue-white [RGBW] · CPC title

• H01L27/326

  Electricity · mapped topic

• H01L27/3272 Primary

  Electricity · mapped topic