Display Panel Data Line Segmentation for Capacitance Stability

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Solution Overview

Problem

Poor alignment accuracy in TFT-LCD display panels leads to changes in capacitance, affecting display performance by causing issues like bright and dark lines and uneven color.

Innovation Solution

The display panel is designed with data lines divided into sub-data lines, where adjacent sub-pixels are electrically connected to opposite sub-data lines, ensuring that capacitance changes at alignment positions are complementary, thus stabilizing display performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If data lines are divided into first sub data line and second sub data line with adjacent sub-pixels connected to opposite sub-data lines, then display performance is improved by stabilizing capacitance, but device complexity increases due to additional data line segmentation

Engineering Contradiction:

Improvedisplay performance stabilityVSAvoiddata line structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The data lines are segmented into first sub data lines and second sub data lines, where adjacent sub-pixels are alternately connected to opposite sub-data lines. This segmentation allows capacitance changes in adjacent sub-pixels to be complementary, thereby stabilizing overall display performance and reducing the impact of alignment inaccuracies.

Inventive Principle:

Principle #1Segmentation

2Reliability

If adjacent sub-pixels are connected to opposite sub-data lines, then capacitance changes become complementary and stabilize display, but manufacturing precision requirements increase due to alignment sensitivity

Engineering Contradiction:

Improvecapacitance stabilityVSAvoidalignment accuracy

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The invention converts the harmful effect of alignment inaccuracies and capacitance variations into a beneficial outcome. By alternately connecting adjacent sub-pixels to opposite sub-data lines, the capacitance changes become complementary, transforming the potential harm of misalignment into a self-compensating mechanism that stabilizes display performance.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If data lines are segmented into sub-data lines, then fault tolerance during production is enhanced, but ease of manufacture decreases due to more complex routing

Engineering Contradiction:

Improvefault toleranceVSAvoiddata line routing

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The data lines are divided into multiple sub-data lines with alternating connections to adjacent sub-pixels. This segmentation enhances fault tolerance by distributing the electrical load and creating redundant pathways, so that potential manufacturing defects in one sub-data line do not compromise the entire display panel.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11947229B2Display panel and display device

Publication Date: 2024.04.02 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD

AI summary

A display panel is provided. A data line is divided into first and second sub data lines. Each sub-pixel meets a condition that any two adjacent sub-pixels are respectively electrically connected to the first and second sub data lines, so that connections of the two adjacent sub-pixels and the sub data lines are opposite. A display device is also provided. The display panel can solve problems of capacitance changes caused by poor alignment accuracy.