Array Substrate Wiring Layout for Transparent Sensing, Reduced Diffraction
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Solution Overview
Problem
The arrangement of sensing components in display devices reduces the screen-to-body ratio and leads to diffraction of light, affecting the accuracy and brightness of images captured by components like front cameras due to dense wiring arrangements.
Innovation Solution
The array substrate design includes grouping and gathering first and second wirings in the sensing component region, with light-shielding strips blocking gaps between adjacent wirings to alleviate diffraction, ensuring high light transmittance and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sensing components are arranged in the display device, then the screen-to-body ratio is reduced, but the imaging quality is affected due to diffraction
Solution Approach 1:
The patent divides the wiring structure into multiple segments by introducing light-shielding strips between adjacent wirings. This segmentation isolates the light paths and prevents diffraction between wirings, allowing the sensing component to be positioned in the display area without compromising imaging quality.
Solution Approach 2:
The light-shielding strips act as intermediary elements between adjacent wirings. These strips block the light paths that would otherwise diffract off the wirings, serving as a mediator that protects the imaging quality while allowing the sensing component to be integrated into the display area.
2Area of stationary object
If wirings are arranged densely in the sensing component region, then the screen-to-body ratio is improved, but light diffraction occurs affecting image accuracy
Solution Approach 1:
The patent extracts the harmful light paths by introducing light-shielding strips that specifically block the diffraction paths between adjacent wirings. This allows dense wiring arrangement for high screen-to-body ratio while removing the harmful diffraction effect through the shielding strips.
Solution Approach 2:
The patent converts the potentially harmful effect of dense wiring (which causes diffraction) into a benefit by using the light-shielding strips to define controlled light paths. The shielding structure transforms the problematic dense arrangement into a beneficial configuration that maintains both high screen-to-body ratio and imaging quality.
3Measurement precision
If light-shielding strips are added to block diffraction, then imaging quality is improved, but the device complexity increases
Solution Approach 1:
The patent merges the light-shielding function with the existing wiring structure by integrating light-shielding strips between adjacent wirings. This combination approach achieves diffraction blocking without requiring a completely separate shielding system, thereby limiting the increase in device complexity.
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
This design improves the imaging quality by reducing diffraction, enhancing brightness and definition of captured images while maintaining a high screen-to-body ratio.
Implementation Method 1
leads to diffraction of light, affecting the accuracy and brightness of images captured
Implementation Method 2
light-shielding strips blocking gaps between adjacent wirings to alleviate diffraction
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
An array substrate has a non-sensing component region and a transparent sensing component region. The array substrate includes a plurality of first wirings extending in a first direction and at least one first light-shielding strip. Wirings passing through the sensing component region in the plurality of first wirings are selected first wirings, the selected first wirings are divided into at least one group, each group includes at least two adjacent selected first wirings, and selected first wirings in each group are gathered in the sensing component region to form a first gathering portion. The at least one first light-shielding strip is disposed at a side of the plurality of first wirings away from or proximate to a display surface of the array substrate. An orthographic projection of each first light-shielding strip on the display surface covers an orthographic projection of one first gathering portion on the display surface.