Display Fingerprint Sensing Layout With Alternating Light Groups
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in reliably obtaining biometric information, such as fingerprint data, with enhanced accuracy and efficiency.
Innovation Solution
A display device incorporating light emitting and receiving elements arranged in specific patterns to alternately emit light and sense biometric data, allowing for the generation of fingerprint data through coordinated operation of light emitting and receiving groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light emitting elements continuously emit light to improve sensing coverage, then biometric data acquisition reliability is improved, but energy consumption increases and measurement precision deteriorates due to ambient light interference
Solution Approach 1:
The patent applies periodic action by controlling light emitting elements to emit light in alternating intervals rather than continuously. Specifically, first and second light emitting elements are controlled to emit light alternately, with each emitting for a predetermined time period followed by a pause. This periodic emission reduces overall energy consumption while maintaining reliable biometric data acquisition through the alternating pattern.
Solution Approach 2:
The patent segments the light emitting function into multiple independent light emitting elements (first light emitting elements and second light emitting elements) that operate alternately. This segmentation allows the system to divide the sensing task across multiple elements, reducing the energy burden on any single element while maintaining continuous sensing coverage through coordinated alternating operation.
2Reliability
If multiple light emitting elements emit light simultaneously to improve sensing coverage, then biometric data acquisition reliability is improved, but measurement precision deteriorates due to crosstalk between adjacent light emitting elements
Solution Approach 1:
The patent eliminates crosstalk interference by implementing periodic alternating emission between first and second light emitting elements. At any given time, only one set of light emitting elements is active while the other is off, ensuring that light receiving elements receive light from a single source without interference from adjacent emitting elements. This temporal separation maintains measurement precision while achieving reliable biometric data acquisition through the alternating pattern.
3Productivity
If light receiving elements are positioned adjacent to light emitting elements to improve sensing efficiency, then data capture efficiency is improved, but measurement precision deteriorates due to direct light exposure without proper optical path control
Solution Approach 1:
The patent resolves the positioning contradiction by implementing periodic alternating emission. Light receiving elements are positioned to receive light from alternately active light emitting elements, ensuring that at any moment they receive light from only one active source. This temporal control prevents direct light exposure issues while maintaining efficient data capture, as the light receiving elements are optimally positioned to capture light during their designated reception intervals.
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
Enhances the reliability and accuracy of biometric data acquisition by optimizing the emission and sensing processes to improve data capture efficiency.
Implementation Method 1
light emitting element groups on one surface of the base, and each including a plurality of light emitting elements arranged in a first direction
Implementation Method 2
light receiving element groups on the one surface of the base, and each including a plurality of light receiving elements arranged in the first direction
Data Source
AI summary
A display device includes: a base; light emitting element groups on one surface of the base, and each including a plurality of light emitting elements arranged in a first direction; and light receiving element groups on the one surface of the base, and each including a plurality of light receiving elements arranged in the first direction, wherein the light emitting element groups are arranged in a second direction, wherein the light receiving element groups are adjacent and parallel to the light emitting element groups, and wherein, based on a first light emitting element group among the light emitting element groups emitting light, first sensing data is obtained, without emission of a second light emitting element group arranged in the second direction from the first light emitting element group, by using at least one first light receiving element group adjacent to the second light emitting element group.