Touch Sensor Mesh Layout for Wide-Angle Color-Uniform Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in achieving improved display quality and touch sensing quality with high resolution, particularly in reducing light blocking differences across viewing angles for different colors.
Innovation Solution
The display device incorporates a display panel with unit pixels arranged in specific patterns, including first and second unit pixels alternately arranged in a first direction, and an input sensor with conductive layers featuring mesh openings and varying line widths to enhance light emission and touch sensing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional sensor conductive layers with uniform line widths are used, then the touch sensing function is provided, but light blocking differences across viewing angles occur for different colors
Solution Approach 1:
The sensor conductive layer is designed with different line widths in different regions: first line portions with a first width and second line portions with a second width. This local variation in line width compensates for the different light blocking characteristics of different colored light emitting areas, reducing viewing angle dependence without requiring complete structural redesign
Solution Approach 2:
The invention changes the physical parameter of line width in the sensor conductive layer to optimize optical performance. By adjusting the line width parameter of different sensor conductive layers, the light blocking effect is compensated for different colors, thereby reducing viewing angle color shift while maintaining touch sensing functionality
2Illumination intensity
If mesh openings are added to sensor conductive layers, then light blocking is reduced, but touch sensing precision may be affected
Solution Approach 1:
Mesh openings are selectively positioned at specific locations where they provide optical benefit without compromising sensing performance. The pattern and distribution of mesh openings are optimized to maintain adequate sensor coverage while allowing sufficient light transmission through the display structure
Solution Approach 2:
The sensor conductive layer combines conductive material with mesh opening structures to create a composite configuration that simultaneously provides electrical conductivity for touch sensing and optical transparency for light transmission. The mesh pattern creates a balance between these two competing requirements
3Illumination intensity
If unit pixels are alternately arranged with different color sequences, then viewing angle color consistency is improved, but manufacturing complexity increases
Solution Approach 1:
Different unit pixels are designed with asymmetric color arrangements relative to each other. Specifically, when adjacent unit pixels are viewed, their light emitting areas are arranged in different sequences, which compensates for viewing angle effects. This asymmetric design reduces the luminance difference between different colored pixels when viewed from oblique angles
Solution Approach 2:
The display is divided into multiple unit pixels with different internal arrangements. Each unit pixel contains light emitting areas arranged in a specific sequence, and by varying these sequences across different pixels, the overall display achieves better viewing angle characteristics through the combined effect of segmented, differently-configured elements
Data Source
AI summary
A display device includes a display panel including a plurality of unit pixels and an input sensor. The input sensor includes a first sensor conductive layer, a first sensor insulating layer, and a second sensor conductive layer. At least one of the first and second sensor conductive layers is provided with a mesh opening defined therethrough, each of the unit pixels includes first, second, and third light emitting areas respectively emitting first, second, and third color lights, the first light emitting area of the first unit pixel and the second light emitting area of the second unit pixel are alternately arranged with each other in a first direction, and the second light emitting area of the first unit pixel and the first light emitting area of the second unit pixel are alternately arranged with each other in the first direction.