Display Panel Integrating Lens and Image Array for Fingerprint Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in integrating biometric recognition technologies like fingerprint, palmprint, and iris recognition without increasing size, weight, and power consumption, which contradicts consumer demands for compact electronic products.
Innovation Solution
A display panel design incorporating a display-side substrate with a display array layer, a lens layer, and an image array layer, utilizing micro-lenses and aperture arrays to reflect and focus light for imaging, enabling fingerprint recognition without separate imaging modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate imaging module is introduced to achieve biometric recognition functions, then the fingerprint recognition function can be realized, but the size, weight and power consumption of the display device will increase
Solution Approach 1:
The patent combines the imaging function into the display panel structure itself by integrating a lens layer and image sensor layer with the display array layer. This merging eliminates the need for separate imaging modules, thereby achieving fingerprint recognition while avoiding additional weight, size, and power consumption increases.
Solution Approach 2:
The display panel is designed to perform multiple functions: display function through the display array layer and imaging function through the integrated lens and image sensor layers. This multi-functionality allows the same structure to serve both display and biometric recognition purposes without requiring separate dedicated modules.
2Reliability
If a separate imaging module is introduced to achieve biometric recognition functions, then the fingerprint recognition function can be realized, but the size of the display device will increase
Solution Approach 1:
The imaging components (lens layer and image sensor layer) are merged into the display panel structure, stacking them vertically with the display array layer. This integration allows the imaging function to be achieved within the existing display footprint, preventing any increase in device size.
Solution Approach 2:
The patent transitions from a planar two-dimensional display structure to a three-dimensional stacked structure by adding lens and image sensor layers in the vertical dimension. This dimensional change enables imaging functionality without expanding the horizontal footprint of the device.
3Reliability
If a separate imaging module is introduced to achieve biometric recognition functions, then the fingerprint recognition function can be realized, but the power consumption of the display device will increase
Solution Approach 1:
The imaging function is merged with the display panel structure, sharing common components such as the substrate and control circuits. This integration reduces redundant power consumption that would arise from separate imaging modules operating independently.
Solution Approach 2:
The display panel structure itself provides the imaging function through its integrated layers, eliminating the need for external power-intensive imaging modules. The system serves its own imaging needs through the built-in lens and image sensor layers.
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
The solution allows for compact fingerprint recognition functionality within display devices, enhancing user experience and market competitiveness by maintaining device size and power efficiency.
Implementation Method 1
each of the display pixels comprises a light-emitting diode and the light-emitting diode emits light toward the display side
Implementation Method 2
the light-emitting diode comprising a reflective electrode or a reflective layer, so as to reflect light emitted by the light-emitting diode toward the display side
Implementation Method 3
the lens layer comprises a plurality of micro-lenses arranged in an array; and a surface, which is closer to the image array layer, of each of the plurality of micro-lenses is a flat surface
Data Source
AI summary
A display panel and a display device are disclosed. The display panel includes a display-side substrate, and a display array layer, a lens layer and an image array layer, which are sequentially provided at a side of the display-side substrate. The display array layer includes a plurality of display pixels arranged in an array; and the image array layer includes a plurality of image pixels arranged in an array, and is configured to form an image with light being reflected from a display side and passing through the lens layer.