Flexible Display Panel With Aligned Fingerprint Sensing And Imaging Areas
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Solution Overview
Problem
Existing display technologies for integrated fingerprint recognition often require separate areas for fingerprint sensing and imaging, which limits integration, increases thickness, and complicates manufacturing.
Innovation Solution
A flexible display panel with a bending area aligns a fingerprint sensing area and imaging area, utilizing photic holes and light-emitting units for optical signal conversion, allowing for integrated fingerprint recognition and simplified manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate areas for fingerprint sensing and imaging are used, then fingerprint recognition function is achieved, but device thickness increases and integration is limited
Solution Approach 1:
The patent combines the fingerprint sensing area and imaging area into a single integrated structure on the flexible substrate. The sensing area includes photic holes that allow light to pass through to the imaging area, merging two previously separate functions into one compact unit, thereby reducing device thickness and improving integration.
Solution Approach 2:
The fingerprint imaging area is positioned behind the sensing area with overlapping projections, creating a nested configuration where the imaging components are embedded within the overall fingerprint recognition structure, reducing the overall thickness while maintaining functional separation.
2Adaptability or versatility
If separate areas for fingerprint sensing and imaging are used, then fingerprint recognition function is achieved, but manufacturing complexity increases
Solution Approach 1:
By merging the sensing and imaging areas into one integrated structure with overlapping projections, the patent reduces the number of separate components and assembly steps required, thereby simplifying the manufacturing process while achieving high integration.
3Adaptability or versatility
If fingerprint sensing area and imaging area are aligned on flexible substrate, then integration is enhanced and thickness reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes the flexible substrate's ability to bend and fold, transforming the spatial relationship between sensing and imaging areas from a planar arrangement to a three-dimensional folded configuration. This allows alignment to be achieved through folding rather than precise planar positioning, reducing manufacturing precision 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 enhances integration, reduces thickness, and lowers manufacturing costs by aligning fingerprint sensing and imaging areas on a flexible substrate, enabling efficient fingerprint recognition through pinhole imaging.
Implementation Method 1
the fingerprint imaging area is configured to receive an optical signal emitted by the light emitting unit, reflected by a fingerprint and passing through the photic hole, and convert the optical signal to an electrical signal
Data Source
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AI summary
The present disclosure relates to a display device, a display panel, a manufacturing method thereof, and a driving method. The display panel includes: a substrate including a first substrate area and a second substrate area; and a display area disposed in the first substrate area and including a plurality of sub-pixels and a fingerprint sensing area, the fingerprint sensing area including a photic hole and a light emitting unit; a fingerprint imaging area disposed in the second substrate area and aligned with the fingerprint sensing area, and configured to receive an optical signal emitted by the light emitting unit, reflected by a fingerprint and passing through the photic hole, and convert the optical signal into an electrical signal; and a fingerprint recognition circuit connected to the fingerprint sensing area and configured to generate a corresponding fingerprint image signal based on the electrical signal output by the fingerprint imaging area.