UV Intensity Detection Using Multi-Band Photo Sensors in Display Panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a method to detect ultraviolet (UV) intensity anywhere and anytime, as existing UV measuring instruments are not universally available, and accessing UV index information online is not feasible outdoors.
Innovation Solution
A display apparatus with a display panel and processing unit, equipped with photo sensors and color filters, detects light intensity across various bands and processes these signals to determine UV intensity, allowing for real-time UV index measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an exclusive UV measuring instrument is used to obtain UV intensity values, then measurement accuracy is improved, but device availability and portability deteriorate
Solution Approach 1:
The patent integrates UV detection functionality into a display device that already serves multiple purposes (display, communication, etc.). The display panel incorporates photo sensors and color filters that enable both normal display operations and UV intensity detection, making the device universal and eliminating the need for separate specialized instruments.
Solution Approach 2:
The patent combines UV detection components (photo sensors, color filters) with the existing display panel structure. The detection units are integrated into the display device itself, merging the functions of display and UV measurement into a single portable device.
2Device complexity
If online UV index information is accessed to obtain UV data, then no additional equipment is needed, but internet access and real-time outdoor measurement become unavailable
Solution Approach 1:
The display device performs UV detection autonomously using its own integrated photo sensors and processing unit. The device does not require external data sources or internet connectivity, instead measuring UV intensity directly and independently, enabling real-time outdoor measurement without time loss.
3Adaptability or versatility
If multiple photo sensors with different detection bands are integrated into the display panel, then UV detection capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent divides the detection function into multiple specialized photo sensors, each responsible for detecting specific wavelength bands. The first photo sensor detects a broad range including UV, while the second and third photo sensors detect specific visible light bands. This segmentation allows each sensor to be optimized for its specific function while collectively providing comprehensive detection capability.
Solution Approach 2:
The patent applies different color filters to different regions of the display panel, with each filter optimized for its specific wavelength band. The first color filter corresponds to the first photo sensor and allows UV and visible light through, while the second and third color filters are optimized for specific visible bands. This local quality approach enables precise spectral discrimination while maintaining manufacturing feasibility.
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
Enables users to obtain UV intensity values directly from a display device, such as a smartphone, effectively protecting themselves from UV exposure without the need for specialized equipment or internet access.
Implementation Method 1
a first photo sensor for detecting an intensity of the light in a first band and converting the intensity of the light in the first band into a first current
Implementation Method 2
a second photo sensor for detecting an intensity of the light in a second band and converting the intensity of the light in the second band into a second current
Implementation Method 3
a third photo sensor for detecting an intensity of the light in a third band and converting the intensity of the light in the third band into a third current
Data Source
AI summary
A display apparatus is provided. The display apparatus is used for detecting an ultraviolet (UV) intensity. The display apparatus includes a lower-substrate, an upper-substrate and a processing unit. The lower-substrate includes a first, a second and a third photo sensors for detecting an intensity of the light in a first, a second and a third bands and converting the intensity of the light in the first, the second and the third bands into a first, a second and a third currents respectively, wherein the ranges of the second and the third bands are comprised within the range of the first band. The upper-substrate is disposed opposite to the lower-substrate. The processing unit is coupled to the first, the second and the third photo sensors, for receiving and processing the first, the second and the third currents so as to obtain the UV intensity.