Display Panel Barrier Layer Anti-Static Corrosion
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Solution Overview
Problem
Display panels used for multi-view or 3D displays are prone to display anomalies due to external static electricity, and metal barrier layers are susceptible to corrosion when exposed to water, leading to reliability issues.
Innovation Solution
A display panel configuration that includes a barrier layer with systematic light-shielding and transmissive regions, combined with a transparent conductive layer, which can be an adhesive layer, to provide anti-static and corrosion-resistant properties by allowing for the selection of suitable materials for both layers and the inclusion of a conductive member to prevent electrical charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metal barrier layer is used to provide anti-static capability, then the display panel becomes resistant to static electricity, but the barrier layer becomes susceptible to corrosion when exposed to water
Solution Approach 1:
The patent divides the barrier layer into multiple functional sub-layers: a light-shielding layer for optical barrier functions, a water-repellent layer for corrosion protection, and a conductive layer for static electricity shielding. This segmentation allows each sub-layer to be optimized for its specific function without compromising the others, resolving the contradiction between anti-static capability and corrosion resistance.
Solution Approach 2:
The barrier layer is constructed as a composite structure combining different materials with complementary properties. The light-shielding layer uses materials like aluminum or copper for electrical conductivity and light blocking, the water-repellent layer uses fluorinated resins or silicon oxides for hydrophobicity, and the conductive layer uses conductive polymers or metal particles for static dissipation. This composite approach enables simultaneous achievement of anti-static and corrosion-resistant properties.
2Reliability
If a glass substrate is provided directly above the barrier layer to prevent water entry, then corrosion is prevented, but the structure becomes more complex and manufacturing becomes more difficult
Solution Approach 1:
The patent extracts the water-repellent function from a separate protective substrate and integrates it directly into the barrier layer structure itself. By incorporating a water-repellent coating or layer within the barrier layer, the function of preventing water entry is achieved without requiring an additional glass substrate, thus reducing structural complexity while maintaining corrosion resistance.
Solution Approach 2:
The barrier layer is designed to perform multiple functions simultaneously: light shielding, electrical conductivity for static protection, and water repellency for corrosion resistance. By making the barrier layer multi-functional, the patent eliminates the need for separate protective components, reducing overall device complexity while achieving reliable corrosion protection.
3Ease of manufacture
If electrodes are provided only on one substrate to simplify the structure, then manufacturing is easier, but electric charge accumulation occurs on the remaining substrate side leading to display anomalies
Solution Approach 1:
The patent introduces a conductive barrier layer as an intermediary between the single-substrate electrodes and the external environment. This conductive layer acts as a mediator that distributes and dissipates electric charges uniformly across the substrate, preventing localized charge accumulation and display anomalies while maintaining the simplified single-substrate electrode configuration.
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 prevents electrical charging and corrosion, making the display panel both anti-static and resistant to water, thus enhancing the reliability and longevity of the display device.
Implementation Method 1
the transparent conductive layer is provided at the upper part of the panel section... provides the resistance to corrosion by water to each of the barrier layer and the transparent conductive layer... prevents electrical charging
Implementation Method 2
the barrier layer includes light-shielding regions and transmissive regions that are arranged systematically
Data Source
AI summary
There are provided a display panel being both anti-static and resistant to corrosion, a display device provided with the display panel, and an electronic unit provided with the display device. The display panel includes a panel section including a plurality of pixels arranged in a matrix; a barrier layer provided at an upper or lower part of the panel section, and the barrier layer including light-shielding regions and transmissive regions that are arranged systematically; and a transparent conductive layer provided at the upper part of the panel section.