GOA Circuit Driving Three Scanning Lines

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current display technologies require multiple GOA circuits to drive three row scanning lines, increasing frame width due to the need for multiple thin film transistors and signal lines.

Innovation Solution

A cascaded GOA circuit design that includes pull-up and pull-down units, feedback mechanisms, and a bootstrap capacitor, utilizing a set of clock signals to drive three row scanning lines with reduced thin film transistors and signal lines, thereby achieving narrow frames.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple GOA circuits are used to drive three row scanning lines, then the driving capability is improved, but the frame width increases

Engineering Contradiction:

Improvedriving capabilityVSAvoidframe width

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The patent combines multiple GOA circuit functions into a single integrated circuit that can drive three row scanning lines simultaneously. The circuit integrates pull-up units, pull-down units, feedback units, and bootstrap capacitors in one unified structure, eliminating the need for separate GOA circuits for each scanning line, thereby reducing frame width while maintaining driving capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single GOA circuit is designed with multi-functional capability to drive multiple row scanning lines (first, second, and third scanning lines) using shared components such as the bootstrap capacitor and feedback unit. This universal design allows one circuit to perform the work of multiple circuits, reducing overall frame width

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If multiple GOA circuits are used to drive three row scanning lines, then the scanning control is improved, but the number of thin film transistors and signal lines increases

Engineering Contradiction:

Improvescanning controlVSAvoidnumber of thin film transistors and signal lines

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the functionality of multiple thin film transistors and signal lines into a single GOA circuit structure. The circuit uses shared pull-up units, pull-down units, and feedback mechanisms that serve multiple scanning lines simultaneously, reducing the total number of TFTs and signal lines required while maintaining effective scanning control

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The feedback unit acts as an intermediary that manages the control signals for multiple scanning lines. By using a single feedback unit to coordinate the operation of pull-up and pull-down units across different scanning lines, the circuit reduces the number of independent control paths and signal lines needed

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11257410B2GOA circuit and display device

Publication Date: 2022.02.22 SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD

AI summary

The present disclosure provides a GOA circuit and a display device. The GOA circuit includes a plurality of cascaded GOA circuit units. An n-th stage GOA unit configured to output an n-th stage horizontal scanning signal includes a pull-up control unit, a feedback unit, a first pull-up unit, a second pull-up unit, a third pull-up unit, a pull-down unit, a pull-down control unit, and a bootstrap capacitor.