Display Device Sensor Layer Layout for Reduced Light Reflection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face challenges in maintaining good visibility in bright environments due to light reflectance issues, which can degrade the display quality.
Innovation Solution
The display device incorporates a sensor layer with conductive pattern layers disposed on different layers, featuring non-overlapped and overlapped identification pattern portions, and cutting areas arranged in a matrix structure to minimize light reflection and enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional sensor layer structure is used, then the device can sense touch input, but light reflection from external sources degrades visibility
Solution Approach 1:
The sensor layer is segmented into multiple functional areas: sensing areas for touch detection and non-sensing areas that minimize light reflection. The conductive pattern layers are divided into first and second layers with specific pattern arrangements in different regions, allowing the device to simultaneously achieve sensing functionality and reduced glare in bright environments
Solution Approach 2:
Different regions of the sensor layer have different properties: the sensing areas contain conductive patterns for touch sensing, while the non-sensing areas have conductive patterns arranged to minimize light reflection. This local differentiation allows the same layer to serve multiple functions - sensing and anti-glare
2Illumination intensity
If conductive pattern layers are arranged to minimize light reflection, then visibility improves, but the sensing capability may be compromised
Solution Approach 1:
The conductive patterns are segmented into first conductive pattern layers and second conductive pattern layers disposed on different layers. The first layer provides primary sensing capability while the second layer supplements sensing and enhances anti-glare performance. This segmentation allows independent optimization of sensing and optical properties
Solution Approach 2:
The patent merges multiple functions into the sensor layer structure: touch sensing capability from conductive patterns, anti-glare functionality from the same patterns arranged in non-sensing areas, and structural support from the layered configuration. This combining allows simultaneous achievement of sensing reliability and visibility improvement
Data Source
AI summary
A display device includes sub-pixel areas and a display layer including a light emitting element disposed in the sub-pixel areas, and an encapsulation layer disposed on the light emitting element. A sensor layer includes a sensor base layer and conductive pattern layers including first and second conductive pattern layers disposed on different layers from one another. The sensor layer includes an overlapped area where the first and second conductive pattern layers overlap each other, a non-overlapped area where either the first or second conductive patterns, but not both, is disposed, and a cutting area where the first and/or second conductive patterns is cut. The conductive pattern layers includes a non-overlapped identification pattern portion disposed in the non-overlapped area, and an overlapped identification pattern portion disposed in the overlapped area.