Display device

Patent metadata

Field	Value
Publication number	US-2016180793-A1
Application number	US-201514809895-A
Country	US
Kind code	A1
Filing date	Jul 27, 2015
Priority date	Dec 23, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A display device including a first substrate comprising pixels, a second substrate facing the first substrate, and a power supply unit disposed on a peripheral area of the first substrate that does not overlap the second substrate.

First claim

What is claimed is:

1 . A display device, comprising:
a first substrate comprising pixels; a second substrate connected to and facing the first substrate; and a power supply unit disposed on a peripheral area of the first substrate that does not overlap the second substrate.

2 . The display device of claim 1 , further comprising data driving chips disposed on the peripheral area of the first substrate by a chip-on-glass method.

3 . The display device of claim 2 , wherein the power supply unit is electrically connected to the data driving chips and configured to supply an analog driving voltage to the data driving chips.

4 . The display device of claim 1 , wherein the first substrate further comprises:
a display area on which images are configured to be displayed; and a black matrix area surrounding the display area.

5 . The display device of claim 4 , further comprising a gate driving circuit disposed on the black matrix area.

6 . The display device of claim 5 , wherein the power supply unit is electrically connected to the gate driving circuit to supply a gate-on voltage to the gate driving circuit.

7 . The display device of claim 4 , wherein gate lines electrically connected to the pixels and data lines insulated from and crossing the gate lines are disposed on the display area and the black matrix area.

8 . The display device of claim 7 , further comprising:
a first gate driving circuit; and a second gate driving circuit disposed on the black matrix area.

9 . The display device of claim 8 , wherein:
the first gate driving circuit is connected to a first end of each of the gate lines; and the second gate driving circuit is connected to a second end of each of the gate lines, the first end being opposite to the second end.

10 . The display device of claim 8 , further comprising an auxiliary power supply unit disposed on the peripheral area,
wherein: the power supply unit is configured to supply a first gate-on voltage to the first gate driving circuit; and the auxiliary power supply unit is configured to supply a second gate-on voltage to the second gate driving circuit.

11 . A display device, comprising:
a first substrate comprising pixels; a second substrate connected to and facing the first substrate; a driving circuit board electrically connected to the first substrate; a connection unit electrically connecting the first substrate and the driving circuit board; and a power supply unit disposed on the connection unit.

12 . The display device of claim 11 , wherein the connection unit comprises at least one flexible circuit board.

13 . The display device of claim 12 , wherein:
the connection unit comprises first and second flexible circuit boards; the power supply unit comprises a first power supply unit and a second power supply unit; and s the first and second power supply units are disposed on the first and second flexible circuit boards, respectively.

14 . The display device of claim 12 , wherein the power supply unit is disposed on the at least one flexible circuit board.

15 . The display device of claim 11 , wherein the second substrate comprises a common electrode.

16 . The display device of claim 11 , further comprising a gate driving circuit disposed on a black matrix area of the first substrate,
wherein the black matrix area surrounds a display area of the first substrate.

17 . The display device of claim 16 , wherein:
the connection unit comprises a first flexible circuit board and a second flexible circuit board; the power supply unit is disposed on the first flexible circuit board; and a first distance from the first flexible circuit board to the gate driving circuit is less than a second distance from the second flexible circuit board to the gate driving circuit.

18 . The display device of claim 17 , wherein:
the power supply unit is electrically connected to the gate driving circuit to supply a gate-on voltage to the gate driving circuit; the gate driving circuit is connected to gate lines disposed on the black matrix area; and the gate lines are electrically connected to the pixels.

19 . The display device of claim 18 , wherein a third distance from the power supply unit to the gate driving circuit is less than a fourth distance from the driving circuit board to the gate driving circuit.

20 . The display device of claim 16 , wherein a first distance from the power supply unit to the gate driving circuit is less than a second distance from the driving circuit board to the gate driving circuit.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Kyungsik
• Lee Joo-Suk
• Kang Seungjae
• Kim Hasook
• Yeo Jang-Hyun

Classifications

• G09G3/3696 Primary

  Generation of voltages supplied to electrode drivers · CPC title

• G09G2330/00

  Aspects of power supply; Aspects of display protection and defect management · CPC title

• G02F1/13454

  Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence) · 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

• G09G2370/08

  Details of image data interface between the display device controller and the data line driver circuit · CPC title