Electronic Substrate with Integrated Touch and Photosensitive Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The integration of touch and photosensitive functions into electronic substrates for devices like OLED display panels poses challenges in manufacturing, particularly in optimizing the process to avoid damaging organic materials and ensuring high signal-to-noise ratios, while also reducing the overall thickness and technological steps required.
Innovation Solution
The electronic substrate incorporates a touch structure and photosensitive unit where at least one touch electrode layer is formed in the same patterning process as the conductive layer in the photosensitive unit, reducing manufacturing complexity and adverse effects on organic light-emitting elements, and includes a photosensitive thin film transistor with a light shielding layer to enhance sensitivity and reduce stray light interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate manufacturing processes are used for touch and photosensitive layers, then functional integration is achieved, but manufacturing complexity and process steps increase
Solution Approach 1:
The patent merges the touch electrode layer and photosensitive electrode layer into a single conductive layer formed by one patterning process. This combining approach achieves functional integration of touch and photosensitive capabilities while reducing manufacturing process complexity by eliminating redundant process steps
2Reliability
If multiple patterning processes are used for different electrode layers, then functional separation is maintained, but manufacturing time and process steps increase
Solution Approach 1:
The patent combines the patterning of touch electrodes and photosensitive electrodes into a single patterning process executed at the same time. This approach maintains functional separation through spatial arrangement while dramatically reducing manufacturing time by eliminating sequential process steps
3Measurement precision
If additional conductive layers are added for touch functionality, then touch sensitivity is improved, but substrate thickness increases
Solution Approach 1:
The patent merges touch and photosensitive functions into a single conductive layer, maintaining touch sensitivity through proper electrode design while avoiding the thickness increase that would result from adding separate conductive layers. The unified layer structure achieves both functions without compromising substrate compactness
4Manufacturing precision
If separate manufacturing processes are used for touch and photosensitive units, then manufacturing precision can be optimized for each, but overall manufacturing efficiency decreases
Solution Approach 1:
The patent combines the manufacturing of touch and photosensitive units into a single integrated patterning process. This approach maintains manufacturing precision through unified process control while improving overall manufacturing efficiency by reducing the total number of process steps and increasing production throughput
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 saves technological steps, reduces substrate thickness, and improves the sensitivity and signal-to-noise ratio of the photosensitive unit, while minimizing the impact on organic light-emitting elements, enabling efficient integration of touch and photosensitive functions in display panels.
Implementation Method 1
a photosensitive thin film transistor with a light shielding layer to enhance sensitivity and reduce stray light interference
Data Source
AI summary
An electronic substrate, a manufacturing method thereof and a display panel are provided. The electronic substrate includes a base substrate as well as a photosensitive unit and a touch structure which are provided on the base substrate. The photosensitive unit includes a first electrode layer, and the touch structure includes a first touch electrode layer. The first electrode layer and the first touch electrode layer are in a same first conductive layer and made of a same material, and the first electrode layer and the first touch electrode layer insulated from each other.