Organic light-emitting diode display

Patent metadata

Field	Value
Publication number	US-2016321994-A1
Application number	US-201615080375-A
Country	US
Kind code	A1
Filing date	Mar 24, 2016
Priority date	Apr 29, 2015
Publication date	Nov 3, 2016
Grant date	—

Abstract

An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a plurality of pixels and a data line formed adjacent to the pixels and configured to transfer a data voltage. The display also includes a driving voltage line formed substantially parallel to the data line and configured to transfer a driving voltage, and an initialization voltage line formed substantially parallel to the data line and configured transfer an initialization voltage. At least one of the pixels includes a driving transistor including a driving gate electrode and configured to receive the initialization voltage from the initialization voltage line. A driving connector is spaced apart from the data line and electrically connected to the driving gate electrode. An OLED is electrically connected to the driving transistor, at least one of the initialization voltage line and the driving voltage line interposed between the driving connector and the data line.

First claim

What is claimed is:

1 . An organic light-emitting diode (OLED) display, comprising:
a substrate; a plurality of scan lines formed over the substrate and configured to transfer a scan signal; a plurality of data lines crossing the scan lines and configured to transfer a plurality of data voltages; a driving voltage line crossing the scan lines and configured to transfer a driving voltage; an initialization voltage line crossing the scan lines and configured to transfer an initialization voltage; and a plurality of pixels formed where the scan lines and the data lines cross, wherein at least one of the pixels includes:
a switching transistor electrically connected to the corresponding scan and data lines;
a driving transistor electrically connected to the switching transistor and configured to receive the initialization voltage from the initialization voltage line;
a driving connector electrically connected to a driving gate electrode of the driving transistor; and
an OLED electrically connected to the driving transistor,
wherein the driving connector is spaced apart from the data lines, and
wherein one of the initialization voltage line and the driving voltage line is interposed between the driving connector and the corresponding data line.

2 . The OLED display of claim 1 , wherein the data voltages include first to third data voltages, wherein the pixels include a first pixel and a second pixel adjacent to the first pixel,
wherein the data lines include a first data line configured to transfer the first data voltage to the first pixel and a second data line configured to transfer the second data voltage to the second pixel, wherein the first data line is spaced apart from the driving connector with one of the initialization voltage line and the driving voltage line interposed therebetween, and wherein the second data line is spaced apart from the driving connector of the first pixel with the other one of the initialization voltage line and the driving voltage line interposed therebetween.

3 . The OLED display of claim 1 , wherein the pixels includes a first pixel and a second pixel configured to emit light having different colors, and a third pixel formed between the first pixel and second pixel,
wherein the driving voltage line is formed between the first and third pixels, and wherein the initialization voltage line is formed between the second and third pixels.

4 . The OLED display of claim 3 , wherein the data lines include first to third data lines configured to respectively transfer first to third data signals to the first to third pixels,
wherein the driving voltage line is formed between the driving connector of the third pixel and the third data line, and wherein the initialization voltage line is formed between the driving connector of the third pixel and the second data line.

5 . The OLED display of claim 3 , further comprising a fourth pixel configured to emit light of the same color as the third pixel,
wherein the second pixel is formed between the third and fourth pixels.

6 . The OLED display of claim 5 , wherein the data lines include first to fourth data lines configured respectively transfer first to fourth data signals to the first to fourth pixels,
wherein the driving voltage lines include first to fourth driving voltage lines configured to respectively transfer the driving voltage to the first to fourth pixels, wherein the initialization voltage line includes first and second initialization voltage lines configured to respectively supply the initialization voltage to the third and fourth pixels, wherein the third driving voltage line is formed between the driving connector of the third pixel and the third data line, wherein the first initialization voltage line is formed between the driving connector of the third pixel and the second data line, wherein the third driving voltage line is formed between the driving connector of the fourth pixel and the fourth data line, and wherein the driving connector of the fourth pixel is formed between the fourth driving voltage line and the second initialization voltage line.

7 . The OLED display of claim 3 , further comprising a fourth pixel configured to emit light of the same color as the first pixel,
wherein the second pixel is formed between the third and fourth pixels.

8 . The OLED display of claim 3 , wherein one of the first and second pixels includes a red light emission pixel, wherein the other pixel includes a blue light emission pixel, and wherein the third pixel is a green light emission pixel.

9 . The OLED display of claim 3 , wherein the pixels includes first and second pixels configured to emit light having different colors, and a third pixel formed between the first and second pixels,
wherein the driving voltage lines include first to third driving voltage lines configured to respectively supply the driving voltage to the first to third pixels, wherein the data lines include first to third data lines configured to respectively supply the first to third data voltages to the first to third pixels, wherein the initialization voltage lines include first to third initialization voltage lines configured to respectively supply the initialization voltage to the first to third pixels, wherein the driving connector of the first pixel is formed between the first driving voltage line and the first initialization voltage line, wherein the driving connector of the second pixel is formed between the second driving voltage line and the second initialization voltage line, and wherein the driving connector of the third pixel is formed between the third driving voltage line and the third initialization voltage line.

10 . The OLED display of claim 1 , wherein the driving connector, the initialization voltage line, the driving voltage line, and the data lines are formed on the same layer.

11 . The OLED display of claim 10 , wherein the driving connector is formed between the initialization voltage line and the driving voltage line.

12 . The OLED display of claim 1 , further comprising:
a gate insulating layer formed over the substrate; a first storage electrode formed over the gate insulating layer and configured to function as a gate electrode of the driving transistor; a first interlayer insulating layer covering the gate insulating layer and the first storage electrode; a second storage electrode formed over the interlayer insulating layer and overlapping the first storage electrode in the depth dimension of the OLED display; and a second interlayer insulating layer covering the second storage electrode and the interlayer insulating layer, wherein the driving connector, the initialization voltage line, and the driving voltage line are formed over the second interlayer insulating layer.

13 . The OLED display of claim 12 , wherein the driving connector is electrically connected to the first storage electrode via a contact hole passing through the second storage electrode, and wherein the driving connector is electrically insulated from the second storage electrode.

14 . The OLED display of claim 1 , further comprising a compensation transistor configured to compensate a threshold voltage of the driving transistor and electrically connected to the driving drain electrode of the driving transistor,
wherein the driving connector is configured to electrically connect the compensation drain electrode of the compensation transistor to the driving gate electrode.

15 . The OLED display of claim 1 , further comprising a semiconductor formed over the substrate and including a switching c

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Kwang Sae

Classifications

• G09G2310/0262

  The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G3/3258 Primary

  with pixel circuitry controlling the voltage across the light-emitting element · CPC title

• G09G3/3275

  Details of drivers for data electrodes · CPC title

• G09G2310/0251

  Precharge or discharge of pixel before applying new pixel voltage · CPC title