Display Panel With Embedded Fingerprint Sensor Pixels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing design of fingerprint sensors in smartphones restricts the implementation of full-screen displays due to their placement under the screen, increasing device thickness and manufacturing costs, and requiring a separate assembly process that lowers yield.
Innovation Solution
A display panel with embedded fingerprint sensor pixels that share power and signal wires with display pixels, allowing for a simplified structure and improved fingerprint sensing performance without the need for a separate fingerprint sensor module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate fingerprint sensor module is placed under the screen, then fingerprint sensing function is achieved, but device thickness increases and assembly process complexity increases
Solution Approach 1:
The patent merges the fingerprint sensor pixels with display pixels into a single integrated structure. Both sensor pixels and display pixels share common power supply lines and signal transmission lines, eliminating the need for a separate fingerprint sensor module. This integration reduces assembly process complexity while maintaining fingerprint sensing functionality.
Solution Approach 2:
The patent implements multi-functionality by designing pixels that can serve both display and fingerprint sensing purposes. The same pixel structure and wiring infrastructure are used for both functions, allowing the display panel to perform dual roles without requiring dedicated separate components.
2Adaptability or versatility
If a separate fingerprint sensor module is placed under the screen, then fingerprint sensing function is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines fingerprint sensor pixels and display pixels into a single integrated array, allowing both functions to be manufactured together in one process. This eliminates the need for separate manufacturing and assembly of fingerprint sensor modules, thereby reducing manufacturing costs.
3Ease of manufacture
If fingerprint sensor pixels are integrated with display pixels, then assembly process is simplified, but pixel structure complexity increases
Solution Approach 1:
The patent segments the pixel array into first unit pixel areas containing N subpixels and second unit pixel areas containing N-1 subpixels with one sensor pixel. This segmentation allows for systematic integration of sensor pixels without disrupting the overall display pixel structure, managing complexity through organized distribution.
Solution Approach 2:
The patent applies local quality by creating different pixel configurations in different areas. Second unit pixel areas have a modified structure with one subpixel replaced by a sensor pixel, while first unit pixel areas maintain the standard N subpixel configuration. This localized modification integrates sensing functionality without requiring complete restructuring of the entire pixel array.
4Ease of manufacture
If sensor pixels are arranged in a regular grid pattern, then manufacturing is simplified, but sensing precision may be compromised
Solution Approach 1:
The patent introduces asymmetry by arranging sensor pixels in second unit pixel areas with N-1 subpixels and one sensor pixel, creating an irregular pattern within the overall grid. This asymmetric arrangement within localized areas allows for optimized fingerprint sensing coverage while maintaining the regular grid structure for manufacturing simplicity.
Data Source
AI summary
The present disclosure relates to a display panel and a display device using the same. The display panel includes a plurality of first unit pixel areas in which N subpixels (N is a positive integer greater than or equal to 3) for displaying data are disposed, and a plurality of second unit pixel areas in which N−1 subpixels for displaying data are disposed. Each of the first unit pixel areas and each of the second unit pixel areas have the same size. Each of the first and second unit pixel areas is a pixel area in a parallelogram or rhombus shape.