Partitioned Display Panel Initialization for Low-Gray Brightness Uniformity

Solution Overview

Problem

Display panels exhibit significant initial cross-voltage value differences and brightness variations across different areas due to varying initial voltage values of light-emitting elements, particularly noticeable in low gray scales.

Innovation Solution

The implementation of independently arranged first initialization signal lines and first power supply voltage signal lines for partitions, allowing for customized voltage settings in each partition to reduce initial cross-voltage value differences and brightness disparities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the same initialization signal line is used for all partitions, then the device complexity is reduced, but the initial cross-voltage value difference and brightness difference among partitions increase

Engineering Contradiction:

Improvesignal line arrangementVSAvoidinitial cross-voltage value uniformity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The display panel is divided into multiple partitions, with each partition having its own independent initialization signal line. This segmentation allows different voltage values to be applied to different partitions, addressing the initial cross-voltage value differences while maintaining manageable device complexity through modular organization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different partitions are assigned different initialization voltage values based on their specific characteristics. This local quality approach ensures that each partition receives the appropriate voltage for its location, reducing brightness differences without requiring complete uniformity across the entire display.

Inventive Principle:

Principle #3Local quality

2Illumination intensity

If different initialization voltage values are applied to different partitions, then the brightness uniformity is improved, but the device complexity increases

Engineering Contradiction:

Improvebrightness uniformityVSAvoidsignal line arrangement

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The display panel is divided into multiple partitions, with each partition having its own independent initialization signal line. This segmentation allows different voltage values to be applied to different partitions, addressing the initial cross-voltage value differences while maintaining manageable device complexity through modular organization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different partitions are assigned different initialization voltage values based on their specific characteristics. This local quality approach ensures that each partition receives the appropriate voltage for its location, reducing brightness differences without requiring complete uniformity across the entire display.

Inventive Principle:

Principle #3Local quality

3Manufacturing precision

If the initialization signal line is arranged independently for each partition, then the initial cross-voltage value difference is reduced, but the manufacturing complexity increases

Engineering Contradiction:

Improveinitial cross-voltage value uniformityVSAvoidsignal line arrangement

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The display panel is divided into multiple partitions, with each partition having its own independent initialization signal line. This segmentation allows different voltage values to be applied to different partitions, addressing the initial cross-voltage value differences while maintaining manageable device complexity through modular organization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The independent initialization signal line structure serves multiple functions: it reduces initial cross-voltage value differences, enables localized voltage adjustment, and provides a scalable framework that can be applied to displays of various sizes and configurations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12412516B2Display panel, method for driving display panel, and display apparatus

Publication Date: 2025.09.09 HEFEI VISIONOX TECH CO LTD

AI summary

A display panel, a method for driving a display panel, and a display apparatus. The display panel includes at least two partitions, at least two first power supply voltage signal lines, and at least two first initialization signal lines, each of the partitions includes at least one sub-pixel, and the sub-pixel includes a light-emitting element; and the first initialization signal lines connected to first electrodes of light-emitting elements in at least two of the partitions are different, second electrodes of the light-emitting elements in at least two of the partitions are insulated from each other, the first power supply voltage signal lines connected to the second electrodes of the light-emitting elements in at least two of the partitions are different, the first initialization signal line is configured to transmit a first initialization signal for initializing the first electrode of the light-emitting element.