Photosensitive Display Layout With Transparent Signal Connection
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Solution Overview
Problem
In display devices with photosensitive elements, the light-receiving surface is often blocked by non-transparent signal lines, leading to a decrease in light sensing performance.
Innovation Solution
A display device design featuring a substrate with a photosensitive element and a signal line where the signal line does not overlap with the photosensitive element in the normal direction, utilizing a transparent conductive member to electrically connect the signal line and photosensitive element, reducing light obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-transparent signal lines are used to electrically connect components, then electrical connection is achieved, but the light-receiving surface of the photosensitive element is blocked, reducing light sensing performance
Solution Approach 1:
The signal line is changed from an opaque material to a transparent conductive material. This material property change allows the signal line to maintain its electrical connection function while becoming transparent to light, thus eliminating the blocking effect on the photosensitive element's light-receiving surface and resolving the contradiction between electrical connection reliability and light sensing performance
Solution Approach 2:
A transparent conductive member is introduced as an intermediary component between the signal line and the photosensitive element. This intermediary allows light to pass through while maintaining the electrical connection, thus resolving the conflict between needing a reliable electrical connection and maintaining light sensing capability
2Productivity
If signal lines are placed above the substrate to transmit signals, then signal transmission is achieved, but the signal lines overlap with the photosensitive element, reducing light reception area
Solution Approach 1:
The signal line material is changed to be transparent, allowing it to be positioned above the substrate for signal transmission without blocking light. This resolves the contradiction by enabling signal transmission while preserving the photosensitive element's light-receiving surface area
Solution Approach 2:
The signal line is moved to a different spatial layer above the substrate, and its material property is changed to transparent. This dimensional and material change allows the signal line to coexist with the photosensitive element without overlapping in a way that blocks light, thus maintaining both signal transmission efficiency and light-receiving surface area
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 enhances the light sensing performance of the photosensitive element by minimizing the area of the light-receiving surface blocked by the signal line, maintaining good photosensitive performance.
Implementation Method 1
The photosensitive element generates a corresponding light-receiving current or voltage according to the amount of received light
Implementation Method 2
a transparent conductive member electrically connected to the signal line and the photosensitive element
Data Source
AI summary
A display device includes a substrate, a photosensitive element formed above the substrate, a signal line formed above the substrate, and a transparent conductive member electrically connected to the signal line and the photosensitive element. In a normal direction of the substrate, the signal line does not overlap with the photosensitive element.