Active Matrix Substrate Gate Line Driving Circuit for Non-Rectangular Panels

Solution Overview

Problem

Conventional active matrix substrates face challenges in manufacturing non-rectangular display panels due to the complexity of driver configuration and control, leading to increased costs and time, as well as operational issues when lines are cut, resulting in abnormal panel operations.

Innovation Solution

An active matrix substrate configuration with a gate line group, source line group, pixel electrodes, and a gate line driving circuit that includes an accumulation line, output unit, accumulated voltage supply unit, and voltage adjustment units arranged along the gate lines, allowing for controlled voltage levels and reduced likelihood of abnormal operations even when parts are cut.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If drivers are arranged along edges of a non-rectangular pixel region, then non-rectangular display panels can be produced, but the configuration and control become complicated

Engineering Contradiction:

Improvepanel shape flexibilityVSAvoiddriver configuration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The gate line driving circuit is divided into multiple independent gate driving circuits, each capable of driving a portion of the gate lines. This segmentation allows the driver configuration to adapt to non-rectangular panel shapes without requiring complex overall control, as each segment operates independently.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The gate driving circuits are arranged in a distributed manner across the substrate rather than concentrated at edges, utilizing the two-dimensional space of the display area. This dimensional redistribution simplifies the control architecture by placing drivers closer to the lines they control.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If drivers are arranged along edges of a non-rectangular pixel region, then non-rectangular display panels can be produced, but manufacturing costs and time increase

Engineering Contradiction:

Improvepanel shape flexibilityVSAvoidmanufacturing efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The gate line driving circuit is divided into multiple independent gate driving circuits, each capable of driving a portion of the gate lines. This segmentation allows the driver configuration to adapt to non-rectangular panel shapes without requiring complex overall control, as each segment operates independently.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The gate driving circuits are arranged in a distributed manner across the substrate rather than concentrated at edges, utilizing the two-dimensional space of the display area. This dimensional redistribution simplifies the control architecture by placing drivers closer to the lines they control.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If lines on the active matrix substrate are cut, then non-rectangular panels can be produced, but abnormal operation occurs

Engineering Contradiction:

Improvepanel shape flexibilityVSAvoidpanel operation reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The gate line driving circuit is divided into multiple independent gate driving circuits, each capable of driving a portion of the gate lines. This segmentation allows the driver configuration to adapt to non-rectangular panel shapes without requiring complex overall control, as each segment operates independently.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each gate driving circuit is designed to independently control its assigned gate lines with localized voltage adjustment. This local control capability ensures that cutting lines to create non-rectangular shapes does not affect the operation of remaining circuits, as each operates autonomously within its designated region.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9953605B2Active matrix substrate and display panel

Publication Date: 2018.04.24 SHARP KK

AI summary

Provided is an active matrix substrate that includes a gate line group, a source line group, a pixel electrode arranged in a display area, and a gate line driving circuit (11) formed in the display area. The gate line driving circuit (11) includes an accumulation line that accumulates a voltage for controlling the voltage level of the gate line; an output unit (U1) that controls the voltage level of the gate line according to the voltage of the accumulation line; an accumulated voltage supply unit (U2) that varies the voltage of the accumulation line according to a signal input from another gate line; and accumulated voltage adjustment units (U3) that change the voltage of the accumulation line to a predetermined level according to the control signal. The output unit (U1), the accumulated voltage supply unit (U2), and, the accumulated voltage adjustment units (U3) are arrayed along the gate line, and the output unit (U1) is arranged at a position interposed between the accumulated voltage adjustment units (U3).