Optical Fingerprint Assembly With Integrated Color Temperature Sensing
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Solution Overview
Problem
The separate arrangement of color temperature sensors in electronic devices, such as mobile phones and tablets, occupies additional screen space, negatively affecting the screen-to-body ratio and display effect.
Innovation Solution
An optical fingerprint assembly that integrates a fingerprint sensor and a color temperature sensing unit, capable of both fingerprint identification and color temperature detection, eliminating the need for a separate color temperature sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a color temperature sensor is separately arranged in the electronic device, then color temperature detection function is achieved, but the screen-to-body ratio is reduced due to occupied layout space
Solution Approach 1:
The patent combines the color temperature sensing unit with the fingerprint sensor to form an integrated optical fingerprint assembly. The color temperature sensing unit shares the same housing and optical path with the fingerprint sensor, allowing both functions to be performed from a single component location, thereby eliminating the need for separate color temperature sensor arrangement and preserving screen-to-body ratio.
Solution Approach 2:
The optical fingerprint assembly is designed to perform multiple functions: fingerprint recognition and color temperature detection. By making the assembly universal, it can serve both purposes from a single integrated unit, reducing the overall component count and optimizing the device layout space while maintaining both functional capabilities.
2Adaptability or versatility
If a color temperature sensor is separately arranged, then color temperature detection is enabled, but the device layout complexity and development costs increase
Solution Approach 1:
The patent merges the color temperature sensing unit with the fingerprint sensor into a single integrated assembly, reducing the total number of components and simplifying the device layout. This integration reduces development complexity by decreasing the number of separate components that need to be designed, positioned, and tested independently.
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 integrated optical fingerprint assembly increases the screen-to-body ratio by eliminating the space required for a separate color temperature sensor, enhancing the display effect and allowing for more flexible component layout, which reduces development complexity and costs.
Implementation Method 1
a fingerprint sensor configured to collect a light signal for fingerprint identification
Implementation Method 2
a color temperature sensing unit configured to collect a light signal for color temperature detection
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An optical fingerprint assembly includes: a fingerprint sensor (211) configured to collect a light signal for fingerprint identification; a color temperature sensing unit (212) configured to collect a light signal for color temperature detection; a fingerprint signal processing circuit (221) configured to process the light signal collected by the fingerprint sensor (211) to generate a fingerprint signal; a color temperature signal processing unit (222) configured to process the light signal collected by the color temperature sensing unit (212) to generate a color temperature signal; and a control unit (23) connected to the fingerprint signal processing circuit (221) and the color temperature signal processing unit (222), the control unit (23) being configured to generate fingerprint information for fingerprint identification according to the fingerprint signal and to generate color temperature information of ambient light according to the color temperature signal.