Display Panel Light Shielding Layer With Transmitting Holes
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Solution Overview
Problem
Current smartphone fingerprint identification technologies are limited as they require external structures, lacking integration within the display region, which can affect convenience and security.
Innovation Solution
A display panel design incorporating a light shielding layer with light transmitting holes and convergent lenses within the display region, allowing for fingerprint identification by reflecting and concentrating light from the user's finger onto a fingerprint identification sensor without disrupting normal display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fingerprint identification structures are disposed outside the display region, then security function is provided, but convenience and integration are reduced
Solution Approach 1:
The patent merges the fingerprint identification function with the display region by integrating the light emitting unit, light shielding layer with light transmitting holes, and fingerprint identification sensor within the display area. This allows the fingerprint sensor to be located at the same position as the display screen, enabling users to authenticate by touching the display surface directly rather than reaching for separate external sensors, thereby improving convenience while maintaining security
Solution Approach 2:
The display region is designed to serve multiple functions: visual display through light emitting units and fingerprint identification through the integrated sensor system. The light shielding layer with light transmitting holes enables both functions to coexist in the same spatial region, allowing the display screen to act as both an information display device and a biometric authentication interface
2Ease of operation
If fingerprint identification structures are integrated within the display region, then convenience and integration are improved, but display performance may be compromised
Solution Approach 1:
The light shielding layer is designed with localized light transmitting holes only in the interval regions between pixel regions, while the pixel regions maintain their full light emitting capability. This local differentiation allows fingerprint identification functionality to be introduced without compromising the light output and display quality of the pixel regions, preserving overall display performance
Solution Approach 2:
The display region is segmented into pixel regions for light emission and interval regions for fingerprint identification. This spatial segmentation allows the two functions to operate independently in their respective zones, with the light shielding layer strategically placed to enable optical path control for fingerprint sensing without interfering with the light emitting function of the pixel regions
3Reliability
If light transmitting holes are provided in the light shielding layer, then fingerprint identification is enabled, but light leakage may occur
Solution Approach 1:
The light shielding layer is designed with light transmitting holes only in the interval regions between pixel regions, while the pixel regions maintain their full light emitting capability. This local differentiation allows fingerprint identification functionality to be introduced without compromising the light output and display quality of the pixel regions, preserving overall display performance
Solution Approach 2:
The light shielding layer acts as an intermediary structure that selectively controls light transmission. By positioning light transmitting holes only in interval regions and maintaining light shielding in pixel regions, it mediates between the need for optical access for fingerprint sensing and the requirement to prevent light leakage that would compromise display quality and sensor accuracy
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
Enables secure and effective fingerprint identification within the display region, enhancing user convenience and security by integrating fingerprint recognition into the display panel without compromising display performance.
Implementation Method 1
Each of the pixel regions P is provided with a light emitting unit 112
Implementation Method 2
A plurality of convergent lenses 120 are provided on a side of the light shielding layer 113 toward the light emitting units 112
Data Source
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AI summary
A display panel (100). The display panel (100) may include a display substrate (110) and convergent lenses (120). The display substrate (110) may have pixel regions (P) and interval regions between the pixel regions (P). The display substrate (110) may include a light shielding layer (113) on a non-light exiting side of light emitting units (112) in the pixel regions (P). The light shielding layer (113) may have a plurality of light transmitting holes (113a) in the interval regions. The convergent lenses (120) may be on a side of the light shielding layer (113) toward the light emitting units (112) and at locations corresponding to the light transmitting holes (113a) respectively.