Display Substrate Charge Adjustment Control Line View Angle

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Solution Overview

Problem

Liquid crystal display devices face challenges in achieving a better display view angle due to the fixed voltage difference between sub-pixel electrodes, which limits their performance.

Innovation Solution

A display substrate design with a charge adjustment-control line between sub-pixel electrodes, allowing for independent voltage control of storage capacitors in each sub-pixel electrode, enabling adjustable voltage differences and improved view angles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two adjacent gate lines control the first and second storage capacitors, then the voltage difference between sub-pixel electrodes is fixed, but the display view angle cannot be improved

Engineering Contradiction:

Improvedisplay view angleVSAvoidcontrol line arrangement

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control line is segmented into a gate line portion and a charge adjustment portion, allowing independent control of storage capacitor charging and charge adjustment. This segmentation enables flexible voltage difference adjustment between sub-pixel electrodes while maintaining clear functional separation in the control architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic charge adjustment capability by allowing the charge adjustment portion to independently control the third thin film transistor. This enables the voltage difference between sub-pixel electrodes to be dynamically adjusted rather than fixed, thereby improving display view angle adaptability.

Inventive Principle:

Principle #15Dynamics

2Reliability

If the voltage difference between sub-pixel electrodes is fixed, then the manufacturing process is simple, but the display performance is limited

Engineering Contradiction:

Improvedisplay performanceVSAvoidcontrol circuit structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The control line is divided into functional segments (gate line portion and charge adjustment portion) that can independently control different aspects of capacitor charging. This allows the system to maintain manufacturing simplicity while achieving enhanced display performance through flexible voltage control.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The control line structure serves multiple functions: it acts as both a gate line for transistor control and a charge adjustment line for capacitor voltage regulation. This multi-functionality enables improved display performance without requiring completely separate control circuits.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9557614B2Display substrate, manufacturing method thereof and display device

Publication Date: 2017.01.31 BOE TECHNOLOGY GROUP CO LTD

AI summary

A display substrate includes a first base substrate; a gate line, a data line and a common electrode line arranged on the first base substrate; a plurality of pixel units each including a first sub-pixel electrode, a second sub-pixel electrode, a first thin film transistor, a second thin film transistor and a third thin film transistor; and a charge adjustment-control line arranged on the first base substrate, where the charge adjustment-control line and the gate line are between the first sub-pixel electrode and the second sub-pixel electrode. The first thin film transistor is connected to the gate line, the data line and the first sub-pixel electrode; the second thin film transistor is connected to the gate line, the data line and the second sub-pixel electrode; the third thin film transistor is connected to the charge adjustment control line, the first sub-pixel electrode and the common electrode line.