Display Panel Conductive Unit ESD Protection
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Solution Overview
Problem
Conventional display panels suffer damage from point discharge at conductive particles during electrostatic discharge tests, which can lead to circuit damage and reduced reliability.
Innovation Solution
A display panel design featuring a conductive unit on the border region, partially overlapping with circuits and covered by a sealant containing conductive particles, where the conductive unit is electrically insulated from the circuits to divert and dissipate charges, preventing damage during electrostatic discharge tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive particles are dispersed in the sealant for electrostatic discharge protection, then electrostatic discharge protection is improved, but point discharge occurs at the conductive particles causing circuit damage
Solution Approach 1:
A conductive unit is introduced as an intermediary component between the circuits and the sealant containing conductive particles. The conductive unit serves as a mediator that intercepts and dissipates electrostatic charges before they can reach the circuits through the conductive particles in the sealant, thereby preventing point discharge damage while maintaining ESD protection functionality
Solution Approach 2:
The conductive unit is positioned to overlap with the circuits in advance, creating a protective barrier before electrostatic discharge events occur. This preliminary positioning ensures that when ESD events happen during operation or transportation, the conductive unit is already in place to divert charges away from the circuits
2Reliability
If the conductive unit overlaps with the circuits for charge dissipation, then circuit protection is improved, but the risk of electrical short circuit increases
Solution Approach 1:
An insulating layer is introduced as a mediator between the conductive unit and the circuits. This insulating layer allows the conductive unit to maintain close proximity to the circuits for effective charge dissipation while simultaneously preventing direct electrical contact that would cause short circuits
Solution Approach 2:
The protective structure is segmented into distinct functional layers: the conductive unit for charge dissipation, the insulating layer for electrical isolation, and the sealant with conductive particles for ESD protection. This segmentation allows each component to perform its specific function without interfering with or compromising the others
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
This design effectively prevents circuit damage from point discharge during electrostatic discharge tests, enhancing the reliability of the display panel while maintaining thin thickness and reducing manufacturing complexity and costs.
Implementation Method 1
point discharge may be occurred at these conductive particles during the electrostatic discharge test
Implementation Method 2
the sealant comprises a plurality of conductive particles dispersed therein
Data Source
AI summary
A display panel and a display device comprising the same are disclosed. The display panel of the present invention comprises: a first substrate comprising a display region and a border region surrounding the display region, wherein a plurality of circuits are disposed on the border region, and an insulating layer is disposed on the first substrate and covers the circuits; a second substrate; a conductive unit disposed on the insulating layer, and partially overlapping with the circuits; and a sealant disposed between the first substrate and the second substrate, and covering the conductive unit, wherein the sealant comprises a plurality of conductive particles dispersed therein.