US 2020/0286573 A1 · SHIFT REGISTER AND ELECTRONIC DEVICE HAVING THE SAME

Abstract

An electronic device includes an active area and multiple shift registers. The active area comprises multiple pixel circuits. Each of the multiple shift registers is configured to output a first control signal, a second control signal, and a third control signal to a part of pixel circuits of the multiple pixel circuits. A duty ratio of the third control signal is greater than a duty ratio of the second control signal, and the duty ratio of the second control signal is greater than a duty ratio of the first control signal. A part of the multiple shift registers and other part of the multiple shift registers are substantially symmetrically disposed at two sides of the active area, respectively.

Claims24

Dependent claims

An electronic device, comprising:

an active area, comprising a plurality of pixel circuits;
and
a plurality of shift registers, wherein each of the plurality of shift registers is configured to output a first control signal, a second control signal, and a third control signal to a part of pixel circuits of the plurality of pixel circuits, wherein a duty ratio of the third control signal is greater than a duty ratio of the second control signal, and the duty ratio of the second control signal is greater than a duty ratio of the first control signal,
wherein a part of the plurality of shift registers and other part of the plurality of shift registers are substantially symmetrically disposed at two sides of the active area, respectively.

1 more element

A shift register, comprising:

a first output circuit, comprising a first node, wherein when an enabling voltage is provided to the first node, the first output circuit outputs a corresponding one of a first clock signal group as a second control signal, and outputs a corresponding one of a second clock signal group as a first control signal, wherein a duty ratio of the first clock signal group is different from a duty ratio of the second clock signal group;
a second output circuit, wherein when the enabling voltage is provided to the first node, the second output circuit outputs a first reference voltage as a third control signal, and when a disabling voltage is provided to the first node, the second output circuit outputs a second reference voltage as the third control signal;
an input circuit, configured to provide the enabling voltage to the first node;
and
a voltage-stabilizing control circuit, configured to provide the disabling voltage to the first node according to other corresponding one of the first clock signal group.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/790,811Filed 14 Feb 2020

Priority

TW 1081076697 Mar 2019

Published

10 Sep 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G11C 19/28
Digital stores in which the information is moved stepwise, e.g. shift registers: using semiconductor elements
G11C 19/287
Using semiconductor elements: organisation of a multiplicity of shift registers
G09G 3/3225
Organic, e.g. using organic light-emitting diodes [OLED]: using an active matrix
G09G 2300/0861
Forming a memory circuit, e.g. a dynamic memory with one capacitor: with additional control of the display period without amending the charge…

Shift register and electronic device having the same

Life of this patent

Shift register and electronic device having the same

Life of this patent

Abstract

Claims24