Transparent Display High-Resistance Touch Connections for Light Transmission
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Solution Overview
Problem
Transparent display devices face challenges in forming touch sensors and touch lines, which complicate the manufacturing process and reduce light transmittance.
Innovation Solution
The transparent display device incorporates a substrate design with transmissive and non-transmissive areas, featuring touch sensors and lines in specific configurations to minimize light transmittance loss and includes a high resistance line for detecting and repairing defective touch sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple touch sensors and touch lines are formed in the transparent display device, then the touch function is implemented, but the light transmittance is reduced and the manufacturing process becomes complicated
Solution Approach 1:
The patent positions touch lines and touch sensors primarily in the non-transmissive area, utilizing the vertical/dimensional arrangement to separate touch functionality from light transmission paths. This spatial reconfiguration allows touch components to occupy the non-transmissive zone without blocking light in transmissive areas, thereby maintaining high light transmittance while implementing complete touch functionality.
Solution Approach 2:
The patent applies different functional qualities to different areas: the transmissive area is optimized for light transmission with minimal touch components, while the non-transmissive area contains the majority of touch lines and sensors. This local differentiation allows each area to perform its primary function efficiently, resolving the contradiction between touch functionality and light transmittance.
2Adaptability or versatility
If multiple touch sensors and touch lines are formed in the transparent display device, then the touch function is implemented, but the manufacturing process becomes complicated
Solution Approach 1:
The patent merges the formation of touch lines and touch sensors with the existing pixel electrode formation process. By integrating touch sensor electrodes with pixel electrodes and forming touch lines simultaneously with signal lines, the manufacturing process is simplified rather than complicated, despite implementing comprehensive touch functionality across the display.
Solution Approach 2:
The patent designs electrodes and lines to serve multiple functions: pixel electrodes also serve as touch sensor electrodes, and signal lines also serve as touch lines. This multi-functionality reduces the total number of separate components and manufacturing steps needed, simplifying the overall manufacturing process while maintaining complete touch functionality.
3Ease of operation
If touch lines are extended through transmissive areas, then touch sensors can be connected, but light transmittance is reduced
Solution Approach 1:
The patent routes touch lines primarily through the non-transmissive area, utilizing the vertical dimension of the display structure to avoid light transmission paths. This spatial reconfiguration allows complete touch sensor connectivity without compromising light transmittance in transmissive areas, as touch lines occupy the non-transmissive zone where light transmission is not required.
Data Source
AI summary
A transparent display device is provided, which may reduce or minimize loss of light transmittance due to a touch sensor and a touch line, and may repair a defective touch sensor. The device includes a substrate provided with a plurality of transmissive areas and a non-transmissive area, including a plurality of light emission areas, a plurality of touch sensors respectively provided in the plurality of transmissive areas, including a touch sensor electrode, a plurality of touch lines provided in the non-transmissive area and extended in a first direction, a plurality of touch bridge lines provided in the non-transmissive area over the substrate and extended in a second direction to be connected to one of the plurality of touch lines, and a plurality of touch connection portions connecting the plurality of touch bridge lines with the plurality of touch sensors, including a high resistance line.