DISPLAY DEVICE, ELECTRO-OPTICAL DEVICE, ELECTRIC EQUIPMENT, METAL MASK, AND PIXEL ARRAY

• US 20160148981A1
• Filed: 11/23/2015
• Published: 05/26/2016
• Est. Priority Date: 11/26/2014
• Status: Abandoned Application

• Current Assignee: Tianma Microelectronics Company Limited
• Original Assignee: NLT Technologies, Ltd. (Tianma Microelectronics Company Limited)
• Inventors: Matsueda, Yojiro
• Application Number:
  US14/948,960
• Publication Number:
  US 20160148981A1
• Time in Patent Office: Days
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 59/352 the areas of the RGB subpixels being different
• CPC Class Codes: H10K 59/353 characterised by the geometrical arrangement of the RGB subpixels
• CPC Class Codes: H10K 71/166 using selective deposition, e.g. using a mask
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y10T 428/24298 Noncircular aperture [e.g., slit, diamond, rectangular, etc.]

Abstract

A display device includes a plurality of pixels, each of the pixels including sub-pixels of a first color, a second color and a third color, the sub-pixels of first and second color are arranged in a column direction, and the sub-pixel of third color is arranged in a row direction with respect to the sub-pixels of first and second colors. The pixels adjacent to each other in the column direction form a set of an even row and a next odd row in an even column, and form a set of an odd row and a next even row in an odd column, in the two sub-pixels of third color, a light emitting layer is continuous and light emitting regions are separated from each other, and the light emitting regions are disposed to be line symmetric with respect to a center line partitioning the two sub-pixels of third color.

Claims

1. A display device, comprising

a plurality of rectangular pixels arranged in two dimensions, each of the plurality of rectangular pixels being provided with a sub-pixel of a first color with the highest luminosity factor, a sub-pixel of a second color and a sub-pixel of a third color with the lowest luminosity factor,

wherein the sub-pixel of the first color and the sub-pixel of the second color are arranged in a column direction,

the sub-pixel of the third color is arranged in a row direction with respect to the sub-pixel of the first color and the sub-pixel of the second color,

each of the sub-pixels of the respective colors includes a transistor which drives the sub-pixel, an anode electrode connected to the transistor, an element separation membrane formed on the anode electrode, a light emitting layer formed so as to cover an opening part which is provided in the element separation membrane and defines a light emitting region of the sub-pixel, and a cathode electrode formed on the light emitting layer,

the pixels adjacent to each other in the column direction are configured to form a set of an even row and a next odd row in an even column, and form a set of an odd row and a next even row in an odd column, and

in the two sub-pixels of the third color of the two pixels of the respective sets, the light emitting layers are continuously formed, the light emitting regions are separated from each other and the light emitting regions are disposed to be line symmetric with respect to a center line partitioning the two sub-pixels of the third color.

2. The display device according to claim 1,

wherein each of the light emitting regions of the two sub-pixels of the third color includes a concave in the vicinity of a contact part which connects the transistor with the anode electrode, and the concaves are disposed to be line symmetric with respect to the center line of the two sub-pixels of the third color.

3. The display device according to claim 1,

wherein central positions of the two sub-pixels of the third color are shifted in the column direction and in a direction from the sub-pixel of the second color toward the sub-pixel of the first color within the pixel, with respect to a central position of the two pixels of the set.

4. The display device according to claim 1,

wherein the first color is green, the second color is red, and the third color is blue.

5. The display device according to claim 1,

wherein the light emitting layers of the sub-pixels of the first color and the second color are made of an organic EL material deposited through opening parts of a metal mask which are separated from each other for each pixel, and

the light emitting layer of the sub-pixel of the third color is made of an organic EL material deposited through an opening part of a metal mask extending over the two sub-pixels of the third color.

6. An electro-optical device, comprising the display device according to claim 1.

7. Electric equipment, comprising an organic electro luminescence apparatus in which the display device according to claim 1 is formed on a flexible substrate as a display apparatus.

8. A metal mask which is used during forming a pixel array on a substrate,

wherein, in the pixel array, a plurality of rectangular pixels are arranged in two dimensions, and each of the plurality of rectangular pixels is provided with a sub-pixel of a first color with the highest luminosity factor, a sub-pixel of a second color and a sub-pixel of a third color with the lowest luminosity factor,

the sub-pixel of the first color and the sub-pixel of the second color are arranged in a column direction,

the sub-pixel of the third color is arranged in a row direction with respect to the sub-pixel of the first color and the sub-pixel of the second color, and

a metal mask for forming the sub-pixel of the third color includes an opening part extending over the two sub-pixels of the third color adjacent to each other in the column direction, and the opening part is shifted one row in an even column and an odd column.

9. The metal mask according to claim 8,

wherein the first color is green, the second color is red, and the third color is blue.

10. A pixel array, comprising

a plurality of rectangular pixels arranged in two dimensions, each of the plurality of rectangular pixels being provided with a sub-pixel of a first color with the highest luminosity factor, a sub-pixel of a second color and a sub-pixel of a third color with the lowest luminosity factor,

wherein the sub-pixel of the first color and the sub-pixel of the second color are arranged in a column direction,

the sub-pixel of the third color is arranged in a row direction with respect to the sub-pixel of the first color and the sub-pixel of the second color,

the pixels adjacent to each other in the column direction are configured to form a set of an even row and a next odd row in an even column, and form a set of an odd row and a next even row in an odd column, and

two sub-pixels of the third color of the two pixels of the respective sets include light emitting regions which are disposed to be line symmetric with respect to a center line partitioning the two sub-pixels of the third color.

11. The pixel array according to claim 10,

wherein each of the two sub-pixels of the third color includes a concave in the light emitting region, and the concaves are disposed to be line symmetric with respect to the center line of the two sub-pixels of the third color.

12. The pixel array according to claim 10,

wherein a central position of the two sub-pixels of the third color is shifted in the column direction and in a direction from the sub-pixels of the second color toward the sub-pixels of the first color in the pixels, with respect to a central position of the two pixels of the set.

13. The pixel array according to claim 10,

wherein the first color is green, the second color is red, and the third color is blue.