Display Sensor Organic Pattern for Light Extraction and Reflection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The conductors in the input sensor of display devices can negatively impact light extraction efficiency and external light reflection ratio.
Innovation Solution
A display device with a display panel featuring a first sensor insulation layer and a first sensor conductive layer, where the conductive patterns are coated with an organic binder having a concave slope surface with a decreasing gradient, and an optical layer with a light-blocking pattern is used to enhance optical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductor patterns are added to the input sensor, then sensing function is improved, but light extraction efficiency deteriorates
Solution Approach 1:
An organic pattern layer is introduced as an intermediary between the conductor pattern and the optical layer. This organic layer fills the gaps between conductor patterns and prevents direct contact between the conductor and the optical layer, thereby maintaining the sensing function while reducing the negative impact on light extraction efficiency
Solution Approach 2:
The organic pattern is selectively applied only in regions where conductor patterns exist, creating local optimization. The organic material fills the spaces between conductors and modifies the local optical properties without affecting the overall conductor structure or sensing function
2Reliability
If conductor patterns are added to the input sensor, then sensing function is improved, but external light reflection ratio deteriorates
Solution Approach 1:
The organic pattern serves as a mediator that modifies the interface between the conductor layer and the optical layer. By filling the gaps and creating a graded transition, it reduces unwanted reflections of external light while preserving the conductor's sensing capability
Solution Approach 2:
The organic material changes the optical parameters (refractive index, surface roughness) at the conductor interface, thereby modifying the reflection characteristics. This parameter modification reduces harmful reflections without affecting the electrical sensing function
Data Source
AI summary
A display device includes a display panel including a plurality of emission areas. An input sensor is on the display panel. The input sensor includes a first sensor insulation layer on the display panel. A first sensor conductive layer is disposed on the first sensor insulation layer. The first sensor conductive layer includes a plurality of first conductive patterns. An organic pattern directly contacts side surfaces of each of the plurality of first conductive patterns. The organic pattern includes an organic binder. The organic pattern includes concave slope surfaces having a decreasing gradient from a top of the organic pattern to a bottom of the organic pattern in a thickness direction of the display device.