Conductive Layer Openings for Sensor Light Filtering
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Solution Overview
Problem
Existing electronic devices face challenges in reducing noise light interference, which affects the sensitivity of sensors used in these modules, hindering efficient signal processing and image display.
Innovation Solution
An electronic device with an opaque structure layer that allows specific light to pass through while blocking noise light, comprising a substrate, silicon semiconductor, conductive layers, and an oxide semiconductor, with strategically positioned openings in the conductive layers to filter out unwanted light, thereby enhancing sensor sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an opaque structure layer is added to block noise light, then sensor sensitivity is improved, but device complexity increases
Solution Approach 1:
The patent merges the noise light blocking function with existing conductive layers (first conductive layer or second conductive layer) by forming an opaque structure layer within them. This integration allows the same layer to serve both as an electrical conductor and as a noise light filter, thereby improving sensor sensitivity without significantly increasing device complexity.
2Object-affected harmful factors
If conductive layers are made opaque to block noise light, then light blocking performance is improved, but light transmission for sensor is reduced
Solution Approach 1:
The patent applies local quality by creating a spatially selective optical property in the conductive layers. The opaque structure layer is positioned and patterned such that it blocks noise light from specific directions or regions while maintaining transparency in other areas to allow desired light to reach the sensor. This is achieved through strategic placement of opaque portions within the conductive layer structure.
Solution Approach 2:
The conductive layers are segmented into transparent portions and opaque structure layers. The opaque structure layer is formed within the conductive layer and contains openings that allow light to pass through to the sensor, while the opaque portions block noise light. This segmentation enables different regions of the same layer to have different optical properties.
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 solution effectively reduces noise light interference, improving the sensitivity and accuracy of sensors by allowing desired light to reach the sensor while blocking ambient noise, thus enhancing overall performance.
Implementation Method 1
an opaque structure layer which is able to reduce the amount of noise lights passing through the electronic device and being received by a sensor disposed in the electronic module
Implementation Method 2
One of the first conductive layer and the second conductive layer comprises a first opening through which the light is allowed to pass
Data Source
AI summary
An electronic device allowing a light to pass through and an electronic module are disclosed. The electronic device includes a substrate, a silicon semiconductor disposed on the substrate, a first conductive layer disposed on the silicon semiconductor, an oxide semiconductor disposed on the substrate, and a second conductive layer disposed on the oxide semiconductor. One of the first conductive layer and the second conductive layer comprises a first opening through which the light is allowed to pass. The electronic module includes the electronic device and a fingerprint sensor or an image sensor disposed underneath the electronic device and configured to receive the light.