Display apparatus and display system having the same

Patent metadata

Field	Value
Publication number	US-11398175-B2
Application number	US-202117469249-A
Country	US
Kind code	B2
Filing date	Sep 8, 2021
Priority date	Oct 13, 2020
Publication date	Jul 26, 2022
Grant date	Jul 26, 2022

Abstract

A display apparatus includes a display panel, a data driver and a gate driving circuit. The display panel includes pixels, data lines, and gate lines. The data driver applies data voltages to the data lines. The data driver includes dummy stages. The gate driving circuit applies gate signals to the gate lines, and is disposed between opening portions in a display area of the display panel. The gate driving circuit includes normal stages that output the gate signals to the gate lines. The dummy stages output a reset signal to at least one of the normal stages.

First claim

What is claimed is:

1. A display apparatus comprising:
a display panel comprising a plurality of pixels, a plurality of data lines, and a plurality of gate lines;
a data driver that applies a plurality of data voltages to the plurality of data lines, the data driver includes a plurality of dummy stages; and
a gate driving circuit that applies a plurality of gate signals to the plurality of gate lines, the gate driving circuit being disposed between opening portions in a display area of the display panel, wherein
the gate driving circuit includes a plurality of normal stages that output the plurality of gate signals to the plurality of gate lines, and
the plurality of dummy stages output a reset signal to at least one of the plurality of normal stages.

2. The display apparatus of claim 1 , wherein the data driver is electrically connected to the display panel at a first side of the display panel.

3. The display apparatus of claim 2 , wherein
the plurality of normal stages are scanned from a second side of the display panel to the first side of the display panel, and
the first side and the second side of the display panel are opposite to each other.

4. The display apparatus of claim 1 , wherein
one normal stage of the plurality of normal stages outputs a gate signal of the plurality of gate signals to one pixel row, and
the one normal stage is disposed at an area corresponding to a plurality of pixel columns.

5. The display apparatus of claim 1 , wherein
the gate driving circuit includes one normal stage column,
one dummy stage column corresponding to the one normal stage column is disposed in a data driving chip of the data driver,
the one normal stage column includes the plurality of normal stages, and
the one dummy stage column includes the plurality of dummy stages.

6. The display apparatus of claim 1 , wherein
the gate driving circuit includes a plurality of normal stage columns,
a plurality of dummy stage columns corresponding to the plurality of normal stage columns are disposed in a plurality of data driving chips of the data driver,
the plurality of normal stage columns include the plurality of normal stages, and
the plurality of dummy stage columns include the plurality of dummy stages.

7. The display apparatus of claim 6 , wherein
a number of the plurality of dummy stage columns is same as a number of the plurality of normal stage columns, and
a number of the plurality of data driving chips is same as the number of the plurality of dummy stage columns.

8. A display apparatus comprising:
a display panel including a plurality of pixels, a plurality of data lines, and a plurality of gate lines;
a data driver comprising a plurality of data driving chips that apply a plurality of data voltages to the plurality of data lines;
a gate driving circuit that applies a plurality of gate signals to the plurality of gate lines, the gate driving circuit being disposed between opening portions in a display area of the display panel; and
a printed circuit board electrically connected to the plurality of data driving chips, the printed circuit board including a plurality of dummy stages, wherein
the gate driving circuit comprises a plurality of normal stages that output the plurality of gate signals to the plurality of gate lines, and
the plurality of dummy stages output a reset signal to at least one of the plurality of normal stages.

9. The display apparatus of claim 8 , wherein
the plurality of data driving chips are electrically connected to the display panel at a first side of the display panel,
the plurality of normal stages are scanned from a second side of the display panel to the first side of the display panel, and
the first side and the second side of the display panel are opposite to each other.

10. The display apparatus of claim 8 , wherein
the gate driving circuit includes a plurality of normal stage columns,
a plurality of dummy stage columns corresponding to the plurality of normal stage columns are disposed on the printed circuit board,
the plurality of normal stage columns include the plurality of normal stages, and
the plurality of dummy stage columns include the plurality of dummy stages.

11. The display apparatus of claim 10 , wherein a number of the plurality of dummy stage columns is same as a number of the plurality of normal stage columns.

12. The display apparatus of claim 8 , wherein
the gate driving circuit includes a plurality of normal stage columns, and
one dummy stage column outputs the reset signal to the plurality of normal stage columns and is disposed on the printed circuit board.

13. The display apparatus of claim 12 , wherein
the one dummy stage column receives a carry signal from one normal stage column of the plurality of normal stage columns, and
the one dummy stage column outputs the reset signal to the plurality of normal stage columns.

14. A display apparatus comprising:
a display panel including a plurality of pixels, a plurality of data lines, and a plurality of gate lines;
a data driver comprising a plurality of data driving chips that apply a plurality of data voltages to the plurality of data lines;
a gate driving circuit that applies a plurality of gate signals to the plurality of gate lines, the gate driving circuit being disposed between opening portions in a display area of the display panel;
a driving controller that outputs a control signal to the data driver and the gate driving circuit;
a printed circuit board electrically connected to the plurality of data driving chips; and
a control board electrically connected to the printed circuit board, the control board including a plurality of dummy stages, wherein
the driving controller is disposed on the control board,
the gate driving circuit comprises a plurality of normal stages that output the plurality of gate signals to the plurality of gate lines, and
the plurality of dummy stages output a reset signal to at least one of the plurality of normal stages.

15. The display apparatus of claim 14 , wherein
the plurality of data driving chips are electrically connected to the display panel at a first side of the display panel,
the plurality of normal stages are scanned from a second side of the display panel to the first side of the display panel, and
the first side and the second side of the display panel are opposite to each other.

16. The display apparatus of claim 14 , wherein
the gate driving circuit includes a plurality of normal stage columns,
a plurality of dummy stage columns corresponding to the plurality of normal stage columns are disposed on the control board,
the plurality of normal stage columns include the plurality of normal stages, and
the plurality of dummy stage columns include the plurality of dummy stages.

17. The display apparatus of claim 16 , wherein a number of the plurality of dummy stage columns is same as a number of the plurality of normal stage columns.

18. The display apparatus of claim 14 , wherein
the gate driving circuit includes a plurality of normal stage columns, and
one dummy stage column outputs the reset signal to the plurality of normal stage columns and is disposed on the control board.

19. The display apparatus of claim 18 , wherein
the one dummy stage column receives a carry signal from one normal stage column of the plurality of normal stage columns, and
the one dummy stage column outputs the reset signal to the plurality of normal stage columns.

20. A display system comprising:
a plu

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Seung-Kyu
• Kim Beomjun
• Kum Sang Seop

Classifications

• G09G3/3266

  Details of drivers for scan electrodes · CPC title

• G09G2310/027

  Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G2300/0413

  Details of dummy pixels or dummy lines in flat panels · CPC title

• G09G2310/0267

  Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays · CPC title