Display device

Patent metadata

Field	Value
Publication number	US-11294250-B2
Application number	US-201816217627-A
Country	US
Kind code	B2
Filing date	Dec 12, 2018
Priority date	Dec 22, 2017
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

Provided is a liquid-crystal display device. The liquid-crystal display device includes gate lines and data lines disposed on a substrate and overlapping with one another to define sub-pixels, two thin-film transistors disposed together in a circuit area of one of two sub-pixels next to each other in a horizontal direction among the sub-pixels; and common electrodes and pixel electrodes disposed alternately in each of the sub-pixels. The two thin-film transistors are connected to the two sub-pixels, respectively.

First claim

The invention claimed is:

1. A display device, comprising:
a substrate;
a plurality of sub-pixels disposed on the substrate in a horizontal direction and a vertical direction;
gate lines and data lines disposed on the substrate and overlapping with one another to separate the sub-pixels from each other;
two thin-film transistors disposed together in a circuit area of one of two sub-pixels aligned with each other in the horizontal direction among the sub-pixels; and
common electrodes and pixel electrodes disposed alternately in each of the sub-pixels,
wherein the two thin-film transistors are electrically coupled to the two sub- pixels, respectively,
wherein the plurality of sub-pixels include a row of sub-pixels which is a group of sub-pixels arranged in a row direction among the plurality of the sub-pixels and a column of sub-pixels which is a group of sub-pixels arranged in a column direction among the plurality of the sub-pixels, and
wherein two adjacent sub-pixels of the row of sub-pixels aligned with each other in a horizontal direction have different lengths from each other in the column direction and two adjacent sub-pixels of the column of sub-pixels aligned with each other in a vertical direction have different lengths from each other in the column direction.

2. The device of claim 1 , further comprising:
color filters disposed in the sub-pixels; and
a light-blocking layer disposed at a boundary between two sub-pixels aligned with each other in a vertical direction among the sub-pixels, the light-blocking layer including at least one of the color filters.

3. The device of claim 2 , wherein the light-blocking layer includes a blue color filter on a red color filter.

4. The device of claim 1 , further comprising:
a common line disposed between a lower side of the sub-pixels and the gate lines, the common line extending in a direction parallel to the gate lines.

5. The device of claim 4 , further comprising:
a first light-blocking line disposed on at least one side of each of the data lines, the first light-blocking line being electrically coupled to the common line; and
a second light-blocking line disposed above each of the data lines.

6. The device of claim 1 , further comprising:
a first pixel electrode connection portion disposed in the circuit area of the one of the two sub-pixels, the first pixel electrode connection portion being electrically coupled to a pixel electrode of the one of the two sub-pixels, the first pixel electrode connection portion extending through a first contact hole; and
a second pixel electrode connection portion electrically coupled to a pixel electrode of the other of the two sub-pixels, the second pixel electrode connection portion extending through a second contact hole.

7. The device of claim 6 , wherein the second pixel electrode connection portion is electrically coupled to the pixel electrode of the other of the two sub-pixels via one of the data lines disposed between the two sub-pixels.

8. The device of claim 1 , wherein the sub-pixels includes red sub- pixels, green sub-pixels, and blue sub-pixels, wherein the red sub-pixels, the green sub-pixels, and the blue sub-pixels are arranged repeatedly and sequentially in each of a plurality of rows, and wherein sub-pixels of the same color among the red sub-pixels, the green sub-pixels, and the blue sub-pixels are arranged repeatedly in each of a plurality of columns.

9. The device of claim 1 , wherein the sub-pixels includes red sub- pixels, green sub-pixels, blue sub-pixels, and white sub-pixels, wherein the red sub-pixels, the green sub-pixels, the blue sub-pixels, and the white sub-pixels are arranged repeatedly and sequentially in each of a plurality of rows, and wherein sub-pixels of two different colors are arranged repeatedly in each of a plurality of columns.

10. The display of claim 9 , wherein the sub-pixels of the two different colors are the red sub-pixel and the blue sub-pixel, or the green sub-pixel and the white sub-pixel.

11. The display device of claim 1 , wherein the display is a liquid crystal display.

12. A display device, comprising:
a substrate;
a plurality of sub-pixels disposed on the substrate in a horizontal direction and a vertical direction;
gate lines and data lines disposed on the substrate and overlapping with one another to separate the sub-pixels from each other;
two thin-film transistors disposed together in a circuit area of one of two sub-pixels aligned with each other in the horizontal direction among the sub-pixels; and
common electrodes and pixel electrodes disposed alternately in each of the sub-pixels,
wherein the two thin-film transistors are disposed together in the circuit area of the one of the two sub-pixels and no thin-film transistor is disposed in a circuit area of the other of the two sub-pixels,
wherein the plurality of sub-pixels include a row of sub-pixels which is a group of sub-pixels arranged in a row direction among the plurality of the sub-pixels and a column of sub-pixels which is a group of sub-pixels arranged in a column direction among the plurality of the sub-pixels, and
wherein two adjacent sub-pixels aligned with each other in a horizontal direction have different lengths from each other in the column direction and two adjacent sub-pixels aligned with each other in a vertical direction have different lengths from each other in the column direction.

13. The device of claim 12 , further comprising:
color filters disposed in the sub-pixels; and
a light-blocking layer disposed at a boundary between two sub-pixels aligned with each other in a vertical direction among the sub-pixels, the light-blocking layer including at least one of the color filters.

14. The device of claim 13 , further comprising:
a common line disposed between a lower side of the sub-pixels and the gate lines, the common line extending in a direction parallel to the gate lines.

15. The device of claim 12 , wherein the two thin-film transistors are electrically coupled to the two sub-pixels, respectively.

16. The device of claim 12 , further comprising:
a first pixel electrode connection portion disposed in the circuit area of the one of the two sub-pixels, the first pixel electrode connection portion being electrically coupled to a pixel electrode of the one of the two sub-pixels, the first pixel electrode connection portion extending through a first contact hole; and
a second pixel electrode connection portion electrically coupled to a pixel electrode of the other of the two sub-pixels, the second pixel electrode connection portion extending through a second contact hole.

17. The device of claim 16 , wherein the second pixel electrode connection portion is electrically coupled to the pixel electrode of the other of the two sub-pixels via one of the data lines disposed between the two sub-pixels.

18. The device of claim 12 wherein the two sub-pixels are asymmetrical with each other.

19. The display device of claim 11 , wherein the display is a liquid crystal display.

Assignees

• Lg Display Co Ltd

Inventors

• Heo Seounguk
• Jun Wooyeal
• Yu Jiseon
• Yoon Jiae

Classifications

• H10D30/67

  Thin-film transistors [TFT] {(Stacked nanowire, nanosheet or nanoribbon FETs H10D30/501)} · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/481

  integrated with passive devices, e.g. auxiliary capacitors · CPC title

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F2201/52

  RGB geometrical arrangements · CPC title