Fingerprint Sensor Integration in Display Light Shielding Region
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Solution Overview
Problem
Conventional fingerprint identification systems in portable electronic devices require complex fabrication processes and reduce the display region size, increasing costs and compromising user experience due to the need for openings and sapphire glass in non-display regions.
Innovation Solution
A substrate with a pixel array region that integrates a fingerprint sensor pattern, comprising driving and sensing electrode patterns insulated from each other, within the light shielding region, allowing for fingerprint identification without compromising the display area, as the sensor patterns are disposed in the display region, eliminating the need for openings in the non-display region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an opening is formed on the cover plate and sapphire glass is used for fingerprint identification, then fingerprint identification function is achieved, but the fabrication process becomes complex and fabrication cost increases
Solution Approach 1:
The patent merges the fingerprint sensor pattern directly into the display region by integrating it with the light shielding layer structure. The fingerprint sensor electrodes are formed within the light shielding region that already exists in the display structure, combining multiple functions (light shielding and fingerprint sensing) into a single integrated structure, thereby eliminating the need for separate openings and sapphire glass layers
Solution Approach 2:
The light shielding region in the display structure is given dual functionality: it continues to serve its original purpose of blocking light in non-display areas while simultaneously housing the fingerprint sensor electrode patterns. This multi-functional design eliminates the need for dedicated fingerprint identification structures, simplifying the overall device architecture
2Adaptability or versatility
If an opening is formed on the cover plate for fingerprint identification, then fingerprint identification function is achieved, but the display region size decreases
Solution Approach 1:
The fingerprint sensor is merged into the display region by utilizing the light shielding region that is already part of the display structure. This integration allows fingerprint sensing to occur within the display area without requiring separate openings, thereby maintaining the maximum possible display region size while adding the fingerprint identification function
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 solution reduces fabrication costs, increases the usable display area, and enhances user experience by integrating fingerprint identification directly into the display region without the need for complex openings or sapphire glass, improving both the display effect and user interaction.
Implementation Method 1
the driving electrode pattern is configured for providing a driving signal of fingerprint identification
Implementation Method 2
the sensing electrode pattern is configured for receiving a sensing signal of fingerprint identification
Data Source
AI summary
A substrate includes a pixel array region and a display panel are provided. The pixel array region includes: a base substrate; a light shielding region disposed on the base substrate; and at least one fingerprint sensor pattern disposed in the light shielding region. The fingerprint sensor pattern includes: a driving electrode pattern and a sensing electrode pattern, wherein the driving electrode pattern is configured for providing a driving signal of fingerprint identification, the sensing electrode pattern is configured for receiving a sensing signal of fingerprint identification, and the driving electrode pattern and the sensing electrode pattern are electrically insulated from each other.