Display Substrate Wire Load Compensation for Uniform Signal Speed

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Solution Overview

Problem

The challenge in display substrate design is achieving a full-screen and narrow-frame design for display devices, where the camera device installation conflicts with the display region, leading to uneven signal line loads due to varying numbers of sub-pixels across different sub-display regions, affecting display quality.

Innovation Solution

A display substrate with a base substrate, semiconductor pattern, and conductive pattern, featuring wires with first and second portions that form compensation units with capacitor structures, allowing for load compensation by adjusting the number ratio of these units to equalize signal line loads across different sub-pixel rows.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the camera device is combined with the display region to maximize the display region, then the display region area is improved, but the signal line load becomes uneven due to varying sub-pixel counts across different sub-display regions

Engineering Contradiction:
Improvedisplay region areaVSAvoidsignal line load uniformity
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The patent applies local quality by introducing different numbers of compensation units (first and second compensation units) into different sub-display regions based on their specific load requirements. The opening peripheral region receives a different number of compensation units compared to other regions, allowing each region to be optimized locally rather than applying a uniform compensation scheme across the entire display region.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent changes the parameter of compensation unit quantity to adjust signal line loads. By varying the number of first and second compensation units in different regions, the patent dynamically adjusts the electrical load parameters to achieve uniform signal transmission characteristics across regions with different sub-pixel counts.

Inventive Principle:
Principle #35Parameter changes

2Area of stationary object

If wires transmit electrical signals across regions with varying sub-pixel counts, then the display region can be maximized, but signal transmission speed consistency deteriorates due to uneven wire loads

Engineering Contradiction:
Improvedisplay region areaVSAvoidsignal transmission speed consistency
Core Design Contradiction:
Area of stationary objectVSSpeed

Solution Approach 1:

The patent applies local quality by introducing different numbers of compensation units (first and second compensation units) into different sub-display regions based on their specific load requirements. The opening peripheral region receives a different number of compensation units compared to other regions, allowing each region to be optimized locally rather than applying a uniform compensation scheme across the entire display region.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent achieves equipotentiality by equalizing the signal transmission conditions across different regions. Through careful design of compensation unit distribution, the patent creates equivalent electrical conditions for signal transmission despite the varying physical configurations and sub-pixel counts in different regions, ensuring consistent signal speeds.

Inventive Principle:
Principle #12Equipotentiality

3Manufacturing precision

If compensation units are added to equalize wire loads, then signal transmission consistency is improved, but the device complexity increases due to additional capacitor structures

Engineering Contradiction:
Improvesignal line load uniformityVSAvoidcompensation unit structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent merges the first compensation unit and second compensation unit into an integrated compensation system. Both compensation units are formed using the same wire structure and are positioned in close proximity, allowing them to work together as a unified compensation mechanism rather than separate independent structures.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent applies universality by using the same wire structure to serve multiple functions: as the signal transmission line and as part of both the first and second compensation units. The wire forms capacitive structures with different reference elements (first reference element and second reference element) to provide dual compensation functionality.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach ensures more accurate load compensation, improving display consistency and quality by equalizing signal transmission speeds across the display substrate, even in regions with varying sub-pixel counts.

Implementation Method 1

the first portion is spaced apart and insulated from the semiconductor pattern and the conductive pattern, to provide at least one first compensation unit with a first capacitor structure

Methodology Applied
Scientific EffectCapacitance: Capacitance

Implementation Method 2

the second portion is spaced apart and insulated from one of the semiconductor pattern or the conductive pattern, to provide at least one second compensation unit with a second capacitor structure

Methodology Applied
Scientific EffectCapacitance: Capacitance

Data Source

PatentUS11910670B2Display substrate and manufacturing method thereof, and compensating method for wire load
Publication Date: 2024.02.20 CHENGDU BOE OPTOELECTRONICS TECH CO LTD
  • US11910670B2 patent drawing
  • US11910670B2 patent drawing
  • US11910670B2 patent drawing

AI summary

A display substrate and a manufacturing method thereof, and a compensating method for wire load are provided. The display substrate includes a display region and a peripheral region. The display region has an opening, and the peripheral region includes an opening peripheral region at least partially in the opening; at least one wire is provided in the display region and the opening peripheral region. Each of the at least one wire includes two portions, a first portion is spaced apart and insulated from the semiconductor pattern and the conductive pattern, to provide at least one first compensation unit, and a second portion is spaced apart and insulated from one of the semiconductor pattern and the conductive pattern, to provide at least one second compensation unit.