Array Substrate Light Absorbing Layer for Borderless Display Reflectivity
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Solution Overview
Problem
Borderless display panels lack coverage for structures in the peripheral region, leading to exposed bonding leads and marking members, causing light reflectivity issues and affecting visual quality.
Innovation Solution
An array substrate design with a peripheral region including marking and bonding sub-regions, featuring a first substrate with a reflecting layer and a light absorbing layer, where the marking and bonding members are positioned on the side of the light absorbing layer distal to the substrate, along with driving and fan-out sub-regions with corresponding light absorbing layers, to manage light reflection and absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a borderless design is adopted, then the appearance quality and visual effect are improved, but the structures in the peripheral region (bonding leads, marking members) become exposed and cause light reflectivity issues
Solution Approach 1:
The patent introduces light absorbing layers as intermediary structures between the bonding leads/marking members and the external environment. These light absorbing layers serve as mediators that prevent direct light interaction with the metal structures, thereby eliminating light reflectivity and Newton rings while maintaining the borderless design aesthetic.
Solution Approach 2:
The patent extracts the light-absorbing function from the traditional border structure and creates dedicated light absorbing layers in the peripheral region. This allows the borderless design to maintain its aesthetic advantages while independently addressing the light reflectivity issue through separate functional layers.
2Illumination intensity
If light absorbing layers are added to cover bonding leads and marking members, then light reflectivity is reduced, but the device structure becomes more complex
Solution Approach 1:
The light absorbing layers are designed to serve multiple functions simultaneously: they absorb light to prevent reflectivity, provide structural coverage for bonding leads and marking members, and maintain the overall device architecture. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
3Illumination intensity
If light absorbing layers are positioned close to bonding leads and marking members, then light reflection is effectively absorbed, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies light absorbing layers with specific local properties in the peripheral region where bonding leads and marking members are located. The light absorbing material is selectively deposited only in areas where light reflection needs to be controlled, rather than uniformly across the entire substrate. This localized application reduces the overall manufacturing precision requirements while maintaining effective light absorption where needed.
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 reduces light reflectivity and eliminates issues like newton rings, improving the visual effect by ensuring that detection light is absorbed or reflected appropriately, facilitating accurate identification of components and enabling mass production.
Implementation Method 1
a first light absorbing layer on a side of the first reflecting layer distal to the first substrate, wherein the at least one marking member and/or the at least one bonding lead is on a side of the first light absorbing layer distal to the first substrate
Implementation Method 2
a first reflecting layer on the first substrate; and a first light absorbing layer on a side of the first reflecting layer distal to the first substrate
Data Source
AI summary
The present disclosure provides an array substrate and a manufacturing method thereof, and a display panel. The array substrate includes at least one marking member in at least one marking sub-region and at least one bonding lead in at least one bonding sub-region, and the at least one marking sub-region and/or the at least one bonding sub-region are further provided with: a first substrate; a first reflecting layer on the first substrate; and a first light absorbing layer on a side of the first reflecting layer distal to the first substrate. The at least one marking member and/or the at least one bonding lead is on a side of the first light absorbing layer distal to the first substrate.