Hybrid Display Pixel Structure for Biometric Sensing at Full Resolution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in recognizing biometric information while maintaining image resolution, as current methods often compromise on resolution due to the integration of biometric sensing capabilities.
Innovation Solution
A display device design incorporating a hybrid element with a light emitting and light receiving mode, utilizing a hybrid anode electrode, light receiving stack, and light emitting stack, along with a pixel circuit and sensor circuit, to enable biometric information recognition without compromising resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If biometric sensing capabilities are integrated into the display device, then the functionality is improved, but the image resolution decreases
Solution Approach 1:
The patent implements a hybrid pixel that can operate in multiple modes: display mode for showing images and sensing mode for capturing biometric information. The same pixel structure serves dual purposes by switching between emitting light for display and receiving light for sensing, eliminating the need for separate sensor pixels that would reduce display resolution.
Solution Approach 2:
The pixel circuit dynamically switches between display and sensing operations based on operational requirements. The hybrid element can transition between emitting light (display function) and receiving light (sensing function) through controlled switching mechanisms, allowing the system to adapt its functionality without physical reconfiguration.
2Measurement precision
If separate sensor pixels are added for biometric recognition, then the sensing capability is improved, but the display resolution decreases
Solution Approach 1:
The hybrid pixel structure integrates both display and sensing capabilities within the same pixel element. By using the same pixel area for both emitting light (display) and receiving light (sensing), the patent achieves biometric recognition without dedicating separate sensor pixels that would reduce the overall display resolution.
Solution Approach 2:
The patent merges the display function and sensing function into a single hybrid pixel unit. The pixel circuit combines the light-emitting component and light-receiving component in one integrated structure, allowing both functions to share the same physical space and circuit resources.
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 simultaneous biometric information recognition and high-resolution image display by optimizing the operation of the hybrid element in both light emitting and receiving modes, enhancing user interaction and functionality.
Implementation Method 1
a light emitting element... in a light emitting mode, the light emitting element is turned on to emit a first color light
Implementation Method 2
a light receiving stack on the hybrid anode electrode... in the light receiving mode, the hybrid element is turned on to receive the first color light
Data Source
AI summary
A display device includes: a base layer; a circuit layer on the base layer; and an element layer on the circuit layer and including a light emitting element and a hybrid element, wherein the hybrid element includes: a hybrid anode electrode; a light receiving stack on the hybrid anode electrode; a light emitting stack on the light receiving stack; and a hybrid cathode electrode on the light emitting stack, wherein the light emitting element is configured to be turned on to emit a first color light in a light emitting mode and a light receiving mode, wherein the hybrid element is configured to be turned on to output a second color light in the light emitting mode, and wherein the hybrid element is configured to be turned on to receive the first color light in the light receiving mode.