Display Panel Detection Circuit for Touch and Fingerprint Resolution
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Solution Overview
Problem
Existing display technologies have complex structures for detecting touch and recognizing fingerprints, leading to degraded recognition resolution.
Innovation Solution
A display panel with a plurality of detection circuits arranged in an array, each including a control component and photosensitive recognition components that convert optical signals into electric signals, processed and output by the control component for touch detection and fingerprint recognition, using transistors and integrating amplifiers to simplify the structure and improve resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate drive electrodes and sense electrodes are arranged to detect touch and recognize fingerprints, then both functions can be achieved, but the internal structure becomes complicated and recognition resolution is degraded
Solution Approach 1:
The patent applies multi-functionality by enabling the same detection circuit to perform both touch detection and fingerprint recognition functions. The detection circuit includes photosensitive recognition components that can operate in different modes: for touch detection, the circuit detects capacitance changes when a finger approaches; for fingerprint recognition, the circuit captures optical images of the fingerprint. This eliminates the need for separate electrode structures for each function, thereby simplifying the internal structure while maintaining both detection capabilities
Solution Approach 2:
The patent merges the touch detection function and fingerprint recognition function into a single integrated detection circuit. The same photosensitive recognition components and control circuits are used for both functions, combining what were previously separate systems into one unified structure. This merging reduces structural complexity while achieving both functions through different operational modes of the same hardware
2Adaptability or versatility
If separate drive electrodes and sense electrodes are arranged to detect touch and recognize fingerprints, then both functions can be achieved, but recognition resolution is degraded
Solution Approach 1:
The detection circuit achieves multi-functionality with high precision by using photosensitive recognition components that can operate in different modes. For fingerprint recognition, the circuit captures detailed optical images with high resolution. For touch detection, the same circuit detects capacitance changes. The unified design ensures consistent high-quality performance for both functions without the resolution degradation that would result from separate, potentially lower-quality dedicated structures
Solution Approach 2:
The patent replaces the traditional capacitive electrode-based detection system with an optical detection system using photosensitive recognition components. This substitution enables high-resolution fingerprint imaging while maintaining touch detection capability, as the photosensitive components can capture detailed optical information for fingerprint recognition while also detecting the presence and position of fingers through optical or capacitive means
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
Simplifies the structure for detecting touch and recognizing fingerprints, enhancing precision by using the same detection circuit for both functions and improving recognition resolution.
Implementation Method 1
a plurality of photosensitive recognition components arranged in an array; the plurality of photosensitive recognition components are configured to: receive optical signals when a touch occurs or a fingerprint is to be recognized, convert the optical signals into electric signals
Data Source
AI summary
The disclosure discloses a display panel, a method for driving the same, and a display device, where the display panel includes a plurality of detection circuits arranged in an array, each detection circuit includes a control component, and a plurality of photosensitive recognition components arranged in an array; the control component is configured to obtain electric signals provided by the plurality of photosensitive recognition components, to process and then output, in a process of recognizing a fingerprint, the electric signals provided by the plurality of photosensitive recognition components separately, and to superimpose, in a process of detecting a touch, the electric signals provided by the plurality of photosensitive recognition components, and to process and output an electric signal resulting from the superimposition.