Display Panel Conductive Side Cover to Block Charge Penetration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric charges generated on the cover window of display panels due to friction can penetrate into the panel layer, causing a shift in the threshold voltage of driving thin film transistors, leading to a greenish phenomenon where certain areas of the display emit brighter light, deteriorating image quality.
Innovation Solution
Incorporating a conductive material into the cover window, adhesion layer, and polarizing plate to increase conductivity, and attaching a conductive side cover to the polarizing plate and support member, creating a path for electric charges to move to a heat dissipation sheet, thereby preventing penetration into the panel layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a cover window is used to protect the display panel, then protection from external impacts is improved, but electric charge accumulation and penetration into the panel layer occurs causing the greenish phenomenon
Solution Approach 1:
A conductive side cover is introduced as an intermediary component between the cover window and the panel layer. This side cover provides a dedicated pathway for electric charges to travel from the cover window to the ground, preventing charge penetration into the panel layer while maintaining the protective function of the cover window.
Solution Approach 2:
The electrical conductivity parameter of the side cover is specifically enhanced by using conductive materials. This parameter change enables the side cover to effectively conduct electric charges away from the panel layer, transforming it from a simple structural component to an active charge management element that prevents the greenish phenomenon.
2Reliability
If the threshold voltage of driving thin film transistor is shifted due to electric charge penetration, then image quality deteriorates due to greenish phenomenon, but increasing conductivity of cover window components may increase energy loss
Solution Approach 1:
The charge conduction path is segmented and directed through the side cover to a specific ground point. This segmentation allows charges to be conducted away from the panel layer through a dedicated pathway, preventing threshold voltage shifts and maintaining image quality without creating widespread energy loss across the entire display structure.
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
Prevents the shift phenomenon in transistors, maintaining image quality by blocking electric charge penetration and reducing the greenish effect.
Implementation Method 1
at least one of the cover window, the adhesion layer, and the polarizing plate includes an electrically conductive material to have increased electrical conductivity
Implementation Method 2
a conductive side cover attached to a side surface of the polarizing plate and to a lower surface of the support member
Implementation Method 3
an electric charge generated by friction between the cover window and an external object
Data Source
AI summary
A display panel includes a cover window; an adhesion layer below the cover window; a polarizing plate below the adhesion layer; a panel layer below the polarizing plate; a support member below the panel layer; and a conductive side cover attached to a side surface of the polarizing plate and to a lower surface of the support member, wherein at least one of the cover window, the adhesion layer, and the polarizing plate includes an electrically conductive material to have increased electrical conductivity.