Emission controller, driving method, and display device

Patent metadata

Field	Value
Publication number	US-2021118406-A1
Application number	US-202017135016-A
Country	US
Kind code	A1
Filing date	Dec 28, 2020
Priority date	Mar 26, 2018
Publication date	Apr 22, 2021
Grant date	—

Abstract

The present disclosure provides an emission controller, a driving method thereof, and a display device. The emission controller includes a first processing module, a second processing module, a third processing module, an output module and a shift control module. The first processing module generates a first signal in response to a first control signal, a second control signal and a second signal. The second processing module generates a second signal in response to the first control signal and the first signal. The third processing module generates third and fourth signals in response to the second control signal, the second and first signals. The output module provides emission control signal in response the first and fourth signal. The shift control module provides a shift control signal in response to the first and fourth signal, or provides a shift control signal in response to the first and third signal.

First claim

What is claimed is:

1 . An emission controller, comprising one or more emission control circuits, wherein each of the one or more emission control circuits comprises:
a first processing module electrically connected to a starting signal terminal, a first voltage signal terminal, a first control signal terminal and a second control signal terminal and configured to generate a first signal to a first node in response to a first control signal, a second control signal and a second signal; a second processing module electrically connected to the first control signal terminal and a second voltage signal terminal and configured to generate the second signal to a second node in response to the first control signal and the first signal; a third processing module electrically connected to the second control signal terminal and the first voltage signal terminal and configured to generate a third signal to a third node and generate a fourth signal to a fourth node in response to the second control signal, the second signal and the first signal; an output module electrically connected to the first voltage signal terminal, the second voltage signal terminal and an output terminal and configured to provide an emission control signal to the output terminal in response to the first signal and the fourth signal; and a shift control module electrically connected to the first voltage signal terminal and a shift control terminal, and configured to provide a shift control signal to the shift control terminal in response to the first signal and the fourth signal or to provide a shift control signal to the shift control terminal in response to first signal and the third signal, wherein the shift control module comprises: a sixteenth thin film transistor having a control electrode electrically connected to the first node, a first electrode electrically connected to the shift control terminal, and a second electrode electrically connected to the second voltage signal terminal; and a seventeenth thin film transistor having a control electrode electrically connected to the third node, a first electrode electrically connected to the first node, and a second electrode electrically connected to the shift control terminal.

2 . The emission controller according to claim 1 , wherein the first processing module comprises:
a first thin film transistor having a control electrode electrically connected to the first control signal terminal, a first electrode electrically connected to the first node, and a second electrode electrically connected to the starting signal terminal; a second thin film transistor having a control electrode electrically connected to the second control signal terminal, a first electrode, and a second electrode electrically connected to the first node; and a third thin film transistor having a control electrode electrically connected to the second node, a first electrode electrically connected to the first voltage signal terminal, and a second electrode electrically connected to the first electrode of the second thin film transistor.

3 . The emission controller according to claim 1 , wherein the second processing module comprises:
a fourth thin film transistor having a control electrode electrically connected to the first node, a first electrode, and a second electrode electrically connected to the first control signal terminal; a fifth thin film transistor having a control electrode electrically connected to the first node, a first electrode electrically connected to the second node, and a second electrode electrically connected to the first electrode of the fourth thin film transistor; and a sixth thin film transistor having a control electrode electrically connected to the first control signal terminal, a first electrode electrically connected to the second node, and a second electrode electrically connected to the second voltage signal terminal.

4 . The emission controller according to claim 1 , wherein the third processing module comprises:
a first capacitor having a first electrode electrically connected to the second node and a second electrode electrically connected to the third node; a seventh thin film transistor having a control electrode electrically connected to the second node, a first electrode electrically connected to the third node, and a second electrode electrically connected to the second control signal terminal; an eighth thin film transistor having a control electrode electrically connected to the second control signal terminal, a first electrode electrically connected to the third node, and a second electrode electrically connected to the fourth node; a ninth thin film transistor having a control electrode electrically connected to the first node, a first electrode electrically connected to the first voltage signal terminal, and a second electrode electrically connected to the fourth node; and a second capacitor having a first electrode electrically connected to the first voltage signal terminal and a second electrode electrically connected to the fourth node.

5 . The emission controller according to claim 1 , wherein the output module comprises:
a tenth thin film transistor having a control electrode electrically connected to the fourth node, a first electrode electrically connected to the first voltage signal terminal, and a second electrode electrically connected to the output terminal; and an eleventh thin film transistor having a control electrode electrically connected to the first node, a first electrode electrically connected to the output terminal, and a second electrode electrically connected to the second voltage signal terminal.

6 . The emission controller according to claim 1 , further comprising:
a third capacitor having a first electrode electrically connected to the first node and a second electrode electrically connected to the second control signal terminal.

7 . The emission controller according to claim 1 , wherein the one or more emission control circuits comprise a plurality of cascaded emission control circuits, wherein among the plurality of cascaded emission control circuits, the shift control terminal of an emission control circuit is electrically connected to the starting signal terminal of a next emission control circuit.

8 . The emission controller according to claim 7 ,
wherein among the plurality of cascaded emission control circuits, the first control signal terminal of each odd-numbered stage of emission control circuit is electrically connected to a first clock signal line, and the second control signal terminal of each odd-numbered stage of emission control circuit is electrically connected to a second clock signal line; and the first control signal terminal of each even-numbered stage of emission control circuit is electrically connected to the second clock signal line, and the second control signal terminal of each even-numbered stage of emission control circuit is electrically connected to the first clock signal line.

9 . A driving method for an emission controller, wherein the emission controller comprises:
a first processing module electrically connected to a starting signal terminal, a first voltage signal terminal, a first control signal terminal and a second control signal terminal and configured to generate a first signal to a first node in response to a first control signal, a second control signal and a second signal; a second processing module electrically connected to the first control signal terminal and a second voltage signal terminal and configured to generate the second signal to a second node in response to the first control signal and the first signal; a third processing module electrically connected to the second control signal term

Assignees

• Shanghai Tianma Am Oled Co Ltd

Inventors

• Gao Yana
• Zhou Xingyao
• Li Yue
• Xiang Dongxu
• Zhu Renyuan
• Cai Zhonglan
• Zhu Juan
• Huang Gaojun
• Xu Yilin

Classifications

• G09G3/3266 Primary

  Details of drivers for scan electrodes · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• G09G2310/0286

  Details of a shift registers arranged for use in a driving circuit · CPC title

• G09G2320/0209

  Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display · CPC title

• G09G5/10 Primary

  Intensity circuits · CPC title