Transparent Display Wall Structure Isolation
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Solution Overview
Problem
Transparent display devices face challenges in maintaining sufficient transparency while incorporating touch sensing functionality, as electrodes and wiring can reduce transparency and obscure the background.
Innovation Solution
The design incorporates a substrate with a light emitting element, a first wall structure with an undercut sidewall, a top conductive pattern, and a barrier multi-layer structure, which includes a first and second barrier layer, to separate the light emitting and transmitting regions and enhance transparency while enabling touch sensing without additional conductive elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electrodes and wiring are added for touch sensing function, then touch sensing capability is improved, but transparency of the display device deteriorates
Solution Approach 1:
The patent extracts the touch sensing function from the light transmitting region by placing the wall structure with conductive patterns only in the light emitting region. This separation removes the harmful visual elements (electrodes and wiring) from the transparent area while preserving touch sensing capability in the non-transparent display area.
Solution Approach 2:
The display device is segmented into distinct functional regions: a light emitting region containing all touch sensing components (wall structure, conductive patterns) and a light transmitting region free of such components. This spatial segmentation allows each region to optimize its primary function without compromising the other.
2Illumination intensity
If wall structure is added to separate regions, then transparency is improved, but device complexity increases
Solution Approach 1:
The wall structure serves multiple functions simultaneously: it acts as a physical barrier separating light emitting and transmitting regions, provides a substrate for conductive patterns enabling touch sensing, and defines the boundary between functional zones. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The wall structure is designed as a universal component that combines structural separation, electrical insulation, and touch sensing support functions. By making the wall structure multi-functional, the patent avoids adding separate components for each function, thereby limiting the increase in device complexity.
Data Source
AI summary
A transparent display device including a substrate having a light emitting region and a light transmitting region, a light emitting element located in the light emitting region, a first wall structure having an undercut sidewall, a first top conductive pattern and a barrier multi-layer structure is provided. The first wall structure forms the boundary between the light emitting region and the light transmitting region and the light emitting element is located in the light emitting region surrounded by the first wall structure. The first top conductive pattern is disposed on the top surface of the first wall structure. The barrier multi-layer structure is disposed on the light emitting element. The barrier multi-layer structure includes a first barrier layer and a second barrier layer. An overlapping portion of the first barrier layer and the second barrier is located in the light emitting region surrounded by the first wall structure.