Transparent Display Multilayer Signal Layout for Higher Light Transmittance
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Solution Overview
Problem
Transparent display devices face limitations in enhancing light transmittance due to the presence of multiple signal lines in the non-transmissive areas.
Innovation Solution
The transparent display device incorporates a substrate with a display area and non-display areas, featuring first and second common power electrodes extended from non-display areas and an initialization line connecting them, along with signal lines on different layers to optimize light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple signal lines are disposed in the non-transmissive area, then the display device can function properly with sufficient signal transmission, but the light transmittance is reduced
Solution Approach 1:
The patent utilizes multi-layer structures to arrange signal lines in different spatial dimensions. Specifically, signal lines are disposed on different layers (first layer and second layer) with the transmissive area interposed between them, allowing signals to be transmitted through multiple dimensions while minimizing the occupation of the transmissive area, thus resolving the contradiction between signal transmission reliability and light transmittance
Solution Approach 2:
The patent segments the signal lines into multiple separate lines disposed on different layers. Instead of using a single thick signal line that would block light, the signal transmission function is divided into multiple thinner lines on different layers, reducing the overall impact on light transmittance while maintaining functional reliability
2Illumination intensity
If the transmissive area is increased to improve light transmittance, then visibility through the display device is enhanced, but the area available for signal lines is reduced
Solution Approach 1:
By extending signal lines into the third dimension (different layers), the patent increases the effective area available for signal transmission without occupying more space in the transmissive plane. This allows the transmissive area to be maximized while still providing sufficient area for all necessary signal lines through vertical stacking
3Ease of manufacture
If signal lines are arranged on the same layer, then the layout is simple, but the transmissive area is reduced due to line spacing requirements
Solution Approach 1:
The patent transitions from two-dimensional planar arrangement to three-dimensional multi-layer arrangement. Signal lines that would need to be spaced apart on the same layer are instead stacked on different layers, eliminating the need for lateral spacing and maximizing the transmissive area while maintaining manufacturing feasibility through standard multi-layer fabrication processes
Data Source
AI summary
A transparent display device may improve light transmittance. The transparent display device comprises a substrate provided with a display area on which a plurality of subpixels are disposed, a first non-display area disposed at a first side of the display area and a second non-display area disposed at a second side facing the first side, a first common power electrode extended from the first non-display area in a first direction, a second common power electrode extended from the second non-display area in the first direction, and an initialization line extended from the display area in a second direction, electrically connecting the first common power electrode with the second common power electrode and supplying an initialization voltage to each of the plurality of subpixels.