Transparent Touch Display Layout With Defective Sensor Detection
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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 there is a difficulty in forming these components without complicating the manufacturing process.
Innovation Solution
The transparent display device incorporates a design with transmissive and non-transmissive areas, where touch sensors and lines are placed in non-transmissive areas, using high resistance areas and sensing transistors to minimize light interference and detect defective sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch sensors and touch lines are provided in the transparent display device, then touch function is implemented, but light transmittance is reduced
Solution Approach 1:
The patent positions touch sensors and touch lines in the non-transmissive area (below the transmissive area), utilizing the vertical dimension to separate touch sensing components from the light transmission path. This allows touch functionality to be maintained while preserving light transmittance in the transmissive area.
Solution Approach 2:
The patent applies different functional qualities to different areas: the transmissive area is optimized for light transmission with minimal components, while the non-transmissive area contains touch sensors and lines. This local differentiation allows each area to perform its primary function effectively without compromising the other.
2Reliability
If multiple touch sensors and touch lines are provided, then touch sensing capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines multiple touch sensors and touch lines within the non-transmissive area, merging them into a integrated structure that shares common manufacturing processes and alignment references, thereby reducing overall manufacturing complexity while maintaining comprehensive touch sensing capability.
Solution Approach 2:
The patent establishes a reference structure (such as a reference line or alignment feature) before forming touch sensors and lines, allowing subsequent components to be formed with precise alignment in a single manufacturing sequence, thereby simplifying the overall manufacturing process.
3Reliability
If touch sensors are provided in transmissive areas, then touch detection coverage is improved, but light transmittance loss increases
Solution Approach 1:
The patent relocates touch sensors from the transmissive area to the non-transmissive area below, utilizing the vertical dimension to achieve full touch detection coverage without blocking light transmission paths, thereby eliminating light transmittance loss while maintaining comprehensive touch sensing.
Solution Approach 2:
The patent introduces a transparent conductive layer or intermediary structure that allows touch sensing to occur in the non-transmissive area while maintaining optical transparency where needed, acting as a mediator between touch detection requirements and light transmission requirements.
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 design reduces light transmittance loss and enables effective detection of defective touch sensors, improving the performance and manufacturing efficiency of transparent display devices.
Implementation Method 1
a touch connection portion connecting the touch sensor and the touch line and including a first high resistance area, in which the resistance sensor or the resistance transistor is provided
Implementation Method 2
a sensing transistor connected to the touch sensor, sensing a voltage of the touch sensor
Data Source
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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 detect a defective touch sensor in a touch block. The transparent display device with a touch sensor comprises a plurality of transmissive areas and a non-transmissive area disposed between the transmissive areas adjacent to each other, a plurality of pixels provided in the non-transmissive area, including a plurality of subpixels, a touch block including a plurality of touch sensors disposed in the plurality of transmissive areas, a plurality of touch connection portions respectively connected to the plurality of touch sensors, transferring a touch sensing voltage to the connected touch sensor and including a first high resistance area, and a plurality of sensing transistors respectively connected to the plurality of touch sensors, sensing a voltage of the connected touch sensor.