Display Device Wiring Lines With Variable Width Coupling Portions

Solution Overview

Problem

Existing display devices face challenges in reducing wiring resistance while preventing electrostatic discharge damage, as wider wiring lines can lead to increased capacitance and potential electrostatic discharge issues.

Innovation Solution

The display device incorporates wiring lines with a linear portion and a coupling portion that gradually increases in width as it approaches the display area's side, featuring a curved boundary to minimize resistance differences and reduce electrostatic discharge risk by optimizing the width and configuration of the wiring lines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the wiring line width is increased to reduce wiring resistance, then wiring resistance is reduced, but capacitance increases leading to electrostatic discharge damage

Engineering Contradiction:

Improvewiring resistanceVSAvoidelectrostatic discharge damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The wiring line employs different width characteristics in different regions: a first region with a first width and a second region with a second width different from the first width. This local variation in width allows the wiring to reduce resistance in critical areas while limiting capacitance increase in other areas, thereby preventing electrostatic discharge damage.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The wiring line is divided into multiple regions with different width characteristics. The first region has a first width while the second region has a second width, creating segmented width variations that optimize both resistance reduction and electrostatic discharge prevention in different portions of the wiring structure.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the wiring line width is increased to reduce wiring resistance, then wiring resistance is reduced, but the wiring line capacitance increases

Engineering Contradiction:

Improvewiring resistanceVSAvoidwiring line capacitance

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The wiring line employs different width characteristics in different regions: a first region with a first width and a second region with a second width different from the first width. This local variation in width allows the wiring to reduce resistance in critical areas while limiting capacitance increase in other areas, thereby preventing electrostatic discharge damage.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The wiring line is divided into multiple regions with different width characteristics. The first region has a first width while the second region has a second width, creating segmented width variations that optimize both resistance reduction and electrostatic discharge prevention in different portions of the wiring structure.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9766516B2Display device

Publication Date: 2017.09.19 MAGNOLIA WHITE CORP

AI summary

A display device includes a plurality of wiring lines that electrically couple a scanning line drive circuit arranged outside a first side of a display area to scanning lines. A first wiring line and a second wiring line adjacent thereto out of the wiring lines each include a linear portion and a coupling portion. The linear portion linearly extends in a direction away from the scanning line drive circuit. The coupling portion is formed continuously with the linear portion, curves to the second side of the display area from the direction in which the linear portion extends, and has a larger width than a width of the linear portion as the coupling portion becomes closer to the second side of the display area. A boundary of the coupling portion of the first piece of wiring facing the second piece of wiring is curved.