Window Substrate Logo Hole Light Blocking Yield
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Solution Overview
Problem
Existing window substrates for display apparatuses face challenges in achieving improved yield and effective light blocking in non-display areas while maintaining a clear display area, particularly in integrating logo patterns without compromising the transparency and structural integrity of the substrate.
Innovation Solution
A window substrate design featuring a base substrate with a display area and non-display area, where the non-display area includes a first printing layer defining a logo hole, a logo pattern exposed through the hole, and a second printing layer positioned between the first printing layer and the logo pattern, with a resin layer between the display panel and the substrate, ensuring reduced reactivity between the logo pattern and the resin layer compared to the printing layers, thus preventing discoloration and enhancing yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a logo pattern is integrated into the window substrate in the non-display area, then the aesthetic appearance is improved, but the yield is reduced due to discoloration between the logo pattern and resin layer
Solution Approach 1:
A buffer layer is introduced as an intermediary between the logo pattern and the resin layer. This buffer layer has a refractive index that is intermediate between the logo pattern and resin layer, preventing direct optical interaction that causes discoloration. The buffer layer acts as a mediator that eliminates the harmful optical effect while allowing both the logo pattern and resin layer to maintain their respective functions, thereby improving yield without compromising aesthetic appearance.
2Object-affected harmful factors
If printing layers are applied in the non-display area to block light, then light blocking performance is improved, but the structural complexity increases
Solution Approach 1:
The light blocking function in the non-display area is divided into multiple segments: a first printing layer, a logo pattern, a buffer layer, and a second printing layer. Each layer performs a specific function - the first printing layer provides base light blocking, the logo pattern provides aesthetic branding, the buffer layer prevents discoloration, and the second printing layer enhances light blocking. This segmentation allows each component to be optimized independently while working together to achieve superior overall light blocking performance.
3Shape
If multiple printing layers and logo patterns are integrated, then the appearance quality is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The logo pattern is formed on the first printing layer before the resin layer is applied. This preliminary formation of the logo pattern ensures proper alignment and positioning before subsequent manufacturing steps. By establishing the logo pattern early in the manufacturing process, the design can guide the positioning of other components, reducing the precision requirements for subsequent alignment operations and simplifying the overall manufacturing process.
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 blocks light in non-display areas, maintains transparency in display areas, and prevents discoloration of the printing layers, thereby improving the yield and appearance of the window substrate and display apparatus.
Implementation Method 1
a first printing layer at the base substrate, corresponding to the non-display area
Implementation Method 2
reactivity between the logo pattern and the resin layer may be less than reactivity between the resin layer and each of the first and second printing layers
Data Source
AI summary
A display apparatus includes a display panel for displaying an image, and a window substrate covering the display panel, the window substrate including a base substrate having a display area and a non-display area, a first printing layer at the base substrate, corresponding to the non-display area, and defining a logo hole, a logo pattern at the first printing layer and corresponding to the non-display area, a portion of the logo pattern being exposed through the logo hole, and a second printing layer at the logo pattern and spaced from the first printing layer with the logo pattern therebetween.