Transparent Display Black Matrix Layout for Hidden Peripheral Circuits
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Solution Overview
Problem
Transparent displays face challenges in maintaining seamless boundaries between display areas and non-display areas due to differences in wiring density and material reflections, leading to conspicuous peripheral circuits and reduced transparency.
Innovation Solution
The implementation of a lattice black matrix on the opposing substrate that overlaps both the display area and peripheral circuits, including gate and signal lines, to match the wiring density and suppress light reflection, thereby enhancing transparency and making the boundary between display and non-display areas seamless.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a black matrix is formed only in the display area, then the display area achieves good contrast and visibility, but the peripheral area shows conspicuous wiring and reduced transparency
Solution Approach 1:
The black matrix is selectively formed only in the display area with higher wiring density, while the peripheral area with lower wiring density remains without black matrix. This local differentiation optimizes contrast in the display area while maintaining transparency in the peripheral area, resolving the contradiction between these two requirements.
Solution Approach 2:
The substrate is divided into two distinct regions: a display area with a black matrix for high contrast, and a peripheral area without black matrix for transparency. This segmentation allows each region to have optimized optical properties suitable for its specific function.
2Object-affected harmful factors
If wiring density is increased in the peripheral area to match the display area, then transparency is improved, but manufacturing complexity and material usage increase
Solution Approach 1:
Instead of uniformly increasing wiring density across the entire substrate, the invention applies local quality by forming a black matrix only where needed (in the display area). This approach achieves the transparency effect without the complexity of redesigning the entire wiring layout.
3Adaptability or versatility
If different materials are used in display and peripheral areas, then functional requirements are met, but color changes and boundary visibility occur
Solution Approach 1:
The invention uses the same substrate and material composition throughout, but applies the black matrix selectively in the display area. This maintains material composition stability and color uniformity while still achieving functional differentiation between display and peripheral areas through local structural modification.
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 solution ensures that the transparency of the peripheral area is equivalent to the display area, reducing the visibility of peripheral circuits and creating a seamless boundary, while preventing color changes due to material differences, thus improving the overall visual experience.
Implementation Method 1
a black matrix arranged on the opposing substrate side is formed only in the display area
Data Source
AI summary
The display device has a first substrate having a display area including pixels and a peripheral area surrounding the display area and including a peripheral circuit, a second substrate arranged facing the first substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and a plurality of gate wirings spaced apart in a first direction in the peripheral circuit of the first substrate, and a plurality of signal lines spaced apart in a second direction intersecting the first direction, wherein the second substrate has a black matrix with a lattice area at a position facing the display area and the peripheral circuit, and the lattice area of the black matrix is arranged to overlap the plurality of gate wirings and the plurality of signal lines of the peripheral circuit.