Repair Line Relocation in Liquid Crystal Display Panels

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Solution Overview

Problem

Current designs for repair lines in liquid crystal display panels fail to meet the requirements of high resolution and narrow frame simultaneously, leading to issues such as insufficient charging rate and increased impedance.

Innovation Solution

A repair line design comprising a lead-out line, lead-in line, and connecting line, where the connecting line is located on the side of the sealed plastic frame facing away from the display region, allowing for efficient signal transmission while avoiding excessive loading and narrow frame constraints.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the connecting line is disposed on the inner side of the sealed plastic frame, then the repair line can be implemented, but excessive loading on the connection line occurs and charging rate becomes insufficient

Engineering Contradiction:

Improverepair line functionalityVSAvoidcharging rate

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The connecting line is extracted from the inner side of the sealed plastic frame and relocated to the outer side, removing it from the high-capacitance environment that caused excessive loading and insufficient charging rate

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If the connecting line is disposed at the bottom of the sealed plastic frame, then the repair line can be implemented, but the frame width increases conflicting with narrow frame requirements

Engineering Contradiction:

Improverepair line functionalityVSAvoidframe width

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The connecting line is extracted from the bottom of the sealed plastic frame and relocated to the outer side, removing it from the frame structure entirely and thus avoiding any increase in frame width

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of manufacture

If the connecting line is made thinner to pass through the sealed plastic frame, then the frame can be cured by backlighting, but the impedance of the connecting line increases

Engineering Contradiction:

Improveframe curingVSAvoidline impedance

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The connecting line is extracted from the frame structure entirely and placed on the outer side, eliminating the need for notches and avoiding the impedance increase that would result from thinning the line

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of making the connecting line thinner to fit through the frame (which increases impedance), the approach is inverted by placing the connecting line on the outer side where it can maintain adequate width while avoiding the frame curing process entirely

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS10859884B2Liquid crystal display panel and liquid crystal display apparatus

Publication Date: 2020.12.08 HKC CORP LTD

AI summary

The present application discloses a liquid crystal display panel and a liquid crystal display device, wherein the liquid crystal display panel comprises an array substrate, a sealed plastic frame, and a repair line including a connecting line located on a side of the sealed plastic frame facing away from the display region.