Reset Control Circuit for Display Gate Drive Signal Interference

Solution Overview

Problem

In display technologies, there is mutual interference between shift signals and signals to be shifted in gate drive circuits, leading to operational failures due to noise interference and errors.

Innovation Solution

A reset control circuit comprising a reset-off sub-circuit and a reset-on sub-circuit, where the reset-off sub-circuit outputs a reset-off signal under the control of a pulse level of the signal to be shifted, and the reset-on sub-circuit stops the reset-on signal from being output under the same pulse level, effectively eliminating interference by controlling the signal levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single transistor is used for reset control, then device complexity is reduced, but signal interference between shift signal and signal to be shifted increases

Engineering Contradiction:

Improvereset control circuit structureVSAvoidsignal interference

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The reset control circuit is divided into two independent sub-circuits: a reset-off sub-circuit controlled by the signal to be shifted, and a reset-on sub-circuit controlled by the shift signal. This segmentation allows each sub-circuit to independently control reset functionality without interfering with the other, thereby eliminating signal interference while maintaining reasonable circuit complexity through modular design

Inventive Principle:

Principle #1Segmentation

2Device complexity

If reset control is implemented without separate sub-circuits, then device complexity is reduced, but reliability decreases due to operational failures from interference

Engineering Contradiction:

Improvereset control circuit structureVSAvoidsignal transmission reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The reset control circuit is divided into two independent sub-circuits: a reset-off sub-circuit controlled by the signal to be shifted, and a reset-on sub-circuit controlled by the shift signal. This segmentation allows each sub-circuit to independently control reset functionality without interfering with the other, thereby eliminating signal interference while maintaining reasonable circuit complexity through modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces separate control sub-circuits as intermediaries between the shift signal and the reset functionality. The reset-off sub-circuit and reset-on sub-circuit act as mediators that process signals independently, preventing direct interference between the shift signal and the signal to be shifted, thus improving reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10600381B2Reset control circuit, method for driving the same, shift register circuit, and display device

Publication Date: 2020.03.24 BOE TECHNOLOGY GROUP CO LTD

AI summary

A reset control circuit, a method for driving the same, a shift register circuit, and a display device are disclosed. The reset control circuit includes: a reset-off sub-circuit, a reset-on sub-circuit, and a general output terminal; a signal to be shifted is input to a first control terminal of the reset-off sub-circuit, a reset-off signal is input to a first input terminal thereof; a shift signal is input to a second control terminal of the reset-on sub-circuit, the signal to be shifted is input to a third control terminal thereof, the shift signal reused as a reset-on signal is input to a second input terminal thereof; with a pulse level of the signal to be shifted, the reset-off sub-circuit is controlled to be enabled to output the reset-off signal to the general output terminal, the reset-on sub-circuit is controlled to be disabled to stop the reset-on signal from being output.