Display Panel Black Matrix Openings for Static Electricity Dissipation
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Solution Overview
Problem
Liquid crystal display panels are susceptible to electro-static discharge (ESD), which can cause sudden or potential damage during manufacturing and affect the performance and service life of electronic products, with existing technologies failing to effectively mitigate static electricity entry.
Innovation Solution
A display panel design featuring a black matrix layer with openings in the peripheral area, located outside the sealant, to block static electricity from entering the display area, potentially filled with insulating materials or a color filter layer to enhance static electricity blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the black matrix layer is made continuous and complete in the peripheral area, then the blocking of light leakage is improved, but the ability to block static electricity is worsened
Solution Approach 1:
The black matrix layer in the peripheral area is segmented by introducing openings (first openings and second openings) that penetrate through the layer. This segmentation allows the black matrix layer to simultaneously block light leakage in display areas while creating conductive paths for static electricity dissipation in non-display areas, resolving the contradiction between light blocking and ESD protection.
Solution Approach 2:
Different regions of the black matrix layer are given different properties: in the display area, the black matrix layer remains continuous to block light leakage, while in the peripheral non-display area, openings are introduced to enable static electricity dissipation. This local differentiation allows each region to optimize its function without compromising the other.
2Object-affected harmful factors
If openings are introduced in the black matrix layer for static electricity dissipation, then the ESD protection is improved, but the light leakage blocking is worsened
Solution Approach 1:
The peripheral area is segmented into multiple opening regions (first openings and second openings) that are strategically positioned only in non-display areas. This segmentation ensures that light leakage blocking in display areas remains intact while providing sufficient pathways for static electricity dissipation in peripheral regions.
Solution Approach 2:
The openings in the black matrix layer serve as intermediaries that redirect static electricity away from the display area through the peripheral region. By providing this intermediate dissipation path, the harmful static electricity is diverted before it can reach and damage the display components, while the display area's light blocking function remains unaffected.
3Object-affected harmful factors
If the black matrix layer is removed or thinned in the peripheral area to allow static electricity passage, then the ESD protection is improved, but the structural integrity and light blocking are worsened
Solution Approach 1:
The black matrix layer maintains its full thickness and structural integrity in display areas where light blocking is critical, while in peripheral non-display areas, controlled openings are introduced. This local quality differentiation allows the structure to be strong where needed and permeable where ESD protection is prioritized, without compromising overall structural integrity.
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
The solution effectively reduces the entry of static electricity into the display panel, lowering the occurrence of undesirable damage and improving the stability and service life of electronic products by blocking external static electricity.
Implementation Method 1
ESD (Electro-Static discharge) is one of the major factors influencing the manufacturing yield of electronic products. When the static electricity in the electronic products is accumulated to a certain extent, electro-static discharge occurs
Data Source
AI summary
The disclosure relates to the technical field of displaying, and discloses a display panel and a display device. The display panel according to the present disclosure is divided into a display area and a peripheral area surrounding the display area, the display panel includes: a first substrate and a second substrate connected by a sealant, wherein the sealant is in the peripheral area; and a black matrix layer located between the first substrate and the second substrate, wherein a part of the black matrix layer in the peripheral area is provided with an opening for blocking static electricity, and the opening is located at an outer side of the sealant.