Light Absorbing Patterns in Display Non-Aperture Regions
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Solution Overview
Problem
Existing electronic devices face challenges in improving the signal to noise ratio (S/N ratio) of their sensing elements due to structural design issues, particularly with the light shielding layer, which affects the performance of components like cameras and fingerprint sensors.
Innovation Solution
Incorporating a display panel design with light absorbing patterns in the non-aperture region that absorb different colors of non-target lights, reducing their impact on sensing elements, thereby enhancing the S/N ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light shielding layer is added to block non-target lights, then the signal to noise ratio of the sensing element is improved, but the device structure becomes more complex and manufacturing difficulty increases
Solution Approach 1:
The patent combines the light shielding function with the display panel structure by integrating light absorbing patterns directly into the non-aperture region of the display panel. This merging eliminates the need for separate light shielding layers, thereby improving the signal to noise ratio while avoiding increased structural complexity
Solution Approach 2:
The display panel's non-aperture region is given dual functionality: it continues to serve as part of the display structure while simultaneously acting as a light shielding element through the integrated light absorbing patterns. This multi-functionality resolves the contradiction by making the same structure serve multiple purposes
2Measurement precision
If a light shielding layer is added to block non-target lights, then the signal to noise ratio of the sensing element is improved, but manufacturing precision requirements increase
Solution Approach 1:
By merging the light shielding function into the display panel's existing non-aperture region, the patent eliminates the need for separate alignment between light shielding layers and sensing elements. The light absorbing patterns are inherently aligned with the display panel structure, thereby improving signal to noise ratio without increasing manufacturing precision requirements
3Measurement precision
If the area of light absorbing patterns is increased to improve light absorption, then the signal to noise ratio is improved, but the display area is reduced
Solution Approach 1:
The patent segments the light absorption function by using multiple light absorbing patterns distributed across the non-aperture region rather than one large continuous shielding layer. This segmentation allows effective light absorption across different angles and wavelengths while maintaining an open aperture region for sensing, thereby improving signal to noise ratio without sacrificing display area
Solution Approach 2:
The patent utilizes the non-aperture region (a previously unused or underutilized dimension of the display panel) to place light absorbing patterns. By operating in this alternative spatial dimension rather than encroaching on the aperture region, the patent improves light absorption performance while preserving the display and sensing areas
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 implementation of light absorbing patterns effectively reduces non-target lights reaching the sensing element, thereby improving the signal to noise ratio and maintaining display performance.
Implementation Method 1
The plurality of first patterns and the plurality of second patterns are configured to absorb different colors of lights
Data Source
AI summary
An electronic device is provided. The electronic device has a first portion and a second portion adjacent to the first portion. The electronic device includes a sensing element and a plurality of first patterns and a plurality of second patterns. The sensing element is configured to receive a light corresponding to the first portion. The plurality of first patterns and the plurality of second patterns are corresponding to the second portion. The plurality of first patterns and the plurality of second patterns are configured to absorb different colors of lights. Moreover, an area of one of the plurality of first patterns is different from an area of one of the plurality of second patterns. The one of the plurality of first patterns has an arc edge.