Transparent Touch Display Layout for Light Transmission and Defect Sensing
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Solution Overview
Problem
Transparent display devices face challenges in maintaining high light transmittance due to the presence of touch sensors and touch lines, and they struggle to detect defective touch sensors effectively, leading to reduced performance and increased defect rates.
Innovation Solution
The implementation of a transparent display device design where touch lines are placed in non-transmissive areas, and a sensing transistor system is used to detect voltage changes in touch sensors, allowing for the identification and isolation of defective sensors, thereby minimizing light transmittance loss and improving touch recognition accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch sensors and touch lines are provided in the display device, then touch function is implemented, but light transmittance is reduced
Solution Approach 1:
The display area is divided into transmissive areas and non-transmissive areas. Touch lines are specifically placed in the non-transmissive areas, while touch sensors are disposed in the transmissive areas. This segmentation allows the touch function to be implemented without blocking light transmission paths.
Solution Approach 2:
Different areas of the display have different optical properties - transmissive areas allow light passage while non-transmissive areas block light. The touch lines are localized to non-transmissive areas where they do not interfere with light transmission, while touch sensors are localized to transmissive areas where they can detect touch without blocking light.
2Adaptability or versatility
If multiple touch sensors are provided in a touch block, then touch detection capability is improved, but defect detection difficulty increases
Solution Approach 1:
A sensing transistor is connected to each touch sensor to form a sensing circuit that provides feedback on the operational status of each sensor. By monitoring the voltage output of each sensing transistor, the system can identify which specific touch sensor is defective, enabling precise defect detection in multi-sensor touch blocks.
Solution Approach 2:
The patent replaces complex mechanical or manual defect detection methods with an electrical sensing system. Each touch sensor is equipped with a sensing transistor that electrically monitors the sensor's status, allowing automated detection of defective sensors through voltage measurements without physical inspection.
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 approach enhances light transmittance by isolating touch lines from transmissive areas and enables precise detection of defective touch sensors, reducing defect rates and improving touch recognition performance.
Implementation Method 1
a plurality of sensing transistors respectively connected to the plurality of touch sensors, transferring a voltage of the connected touch sensor to one of the plurality of sensing lines
Data Source
AI summary
A transparent display device with a touch sensor is provided, which may reduce loss of light transmittance due to a touch sensor and a touch line and may detect a defective touch sensor in a touch block. The device includes transmissive areas and a non-transmissive area disposed between the transmissive areas adjacent to each other, a plurality of touch lines provided in the non-transmissive area, and a plurality of touch blocks respectively connected to the plurality of touch lines. Each touch block includes a plurality of touch sensors disposed in the transmissive areas and comprised of M number of rows and N number of columns, a plurality of sensing lines disposed to correspond to the N number of columns, and a plurality of sensing transistors respectively connected to the plurality of touch sensors, transferring a voltage of the connected touch sensor to one of the plurality of sensing lines.