Array Substrate Photosensor Layout With Fewer Layers and Masks
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Solution Overview
Problem
Current display panels with integrated environmental light photosensitive sensors have multiple layers and complex manufacturing processes, which affect aesthetics and screen-to-body ratios.
Innovation Solution
An array substrate with a photosensitive sensor that includes a photosensitive semiconductor layer on an extension section of the drain electrode, where the first electrode plate is connected to one side of the semiconductor layer and the second electrode plate is connected to the drain electrode, reducing the number of layers and manufacturing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multi-layer photosensitive sensor structure is used, then sensitivity and functionality are maintained, but device complexity and number of manufacturing processes increase
Solution Approach 1:
The patent merges the drain electrode and one electrode of the photosensitive sensor into a single integrated structure. The drain electrode extends to form part of the photosensitive sensor's electrode system, eliminating the need for separate electrode layers and reducing overall device complexity while maintaining sensing functionality.
Solution Approach 2:
The drain electrode serves dual functions: as part of the thin film transistor circuit and as an electrode for the photosensitive sensor. This multi-functional design reduces the total number of components and layers required, simplifying the device structure without compromising performance.
2Reliability
If traditional multi-layer photosensitive sensor structure is used, then sensitivity and functionality are maintained, but manufacturing precision requirements increase
Solution Approach 1:
By combining the drain electrode with the photosensitive sensor electrode, the patent eliminates multiple alignment interfaces between separate layers. The integrated structure requires fewer alignment steps during manufacturing, thereby reducing the cumulative precision requirements and simplifying the fabrication process.
3Reliability
If more layers and photomasks are used, then photosensitive sensor functionality is improved, but aesthetic appeal and screen-to-body ratio are reduced
Solution Approach 1:
The integration of the drain electrode with the photosensitive sensor electrode reduces the total number of layers and photomasks needed. This simplification allows for a more compact device structure, enabling larger screen-to-body ratios and improved aesthetic appeal while maintaining full photosensitive sensor functionality.
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 configuration simplifies the photosensitive sensor structure, reduces the number of manufacturing processes, and enhances the aesthetic appeal by minimizing the number of layers and photomasks, while maintaining sensitivity and functionality.
Implementation Method 1
a photosensitive sensor wherein the photosensitive sensor includes a photosensitive module and a storage module, the photosensitive module includes a photosensitive semiconductor layer
Data Source
AI summary
An array substrate, a manufacturing method of the array substrate, and a display panel are provided. The array substrate includes a photosensitive sensor. The photosensitive sensor includes a photosensitive module and a storage module. The photosensitive module includes a photosensitive semiconductor layer. The storage module includes a first electrode plate and a second electrode plate. Wherein, the photosensitive semiconductor layer is disposed on an extension section of a drain electrode. A number of film layer of the photosensitive sensor is decreased, and photomasks are saved.