Display Panel Wire Placement Around Infrared Openings

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Solution Overview

Problem

Touch grids and black matrixes in OLEDs block infrared light-transmitting regions, reducing light transmittance and impairing infrared communication performance.

Innovation Solution

Incorporate infrared light-transmitting regions with openings and through-holes in the display panel design, positioning wires outside these openings to prevent obstruction, and utilize a black matrix layer with through-holes to enhance light transmittance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If touch grids and black matrixes are formed by wires in polarizer less OLEDs, then the light output rate and power consumption are improved, but the infrared light transmittance is reduced and infrared communication performance deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidinfrared communication performance

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The infrared light-transmitting region is segmented into multiple opening regions, and the black matrix layer is divided into multiple through-holes distributed across these opening regions. This segmentation allows infrared light to pass through multiple discrete pathways rather than being blocked by continuous wire structures, thereby maintaining infrared communication performance while preserving the touch grid and black matrix functions for visible light management.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The black matrix layer is designed with different local properties: it has through-holes in opening regions to allow infrared light transmission, while maintaining its light-blocking function in other areas. The touch electrode wires are positioned to avoid opening regions specifically, creating local variations in material density and light transmission properties to simultaneously achieve touch sensitivity, visible light management, and infrared transparency.

Inventive Principle:

Principle #3Local quality

2Reliability

If wires are positioned to avoid opening regions in infrared light-transmitting regions, then infrared light transmittance is improved, but the touch grid structure complexity increases

Engineering Contradiction:

Improveinfrared light transmittanceVSAvoidtouch grid structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The design resolves the conflict between wire positioning and infrared transmission by utilizing the dimensional space above and below the opening regions. Wires are arranged in the touch electrode layer to extend over opening regions without touching them, utilizing the vertical spacing between layers. This dimensional approach allows wires to maintain their electrical connectivity function while avoiding physical obstruction of infrared light paths through the black matrix layer's through-holes.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12439808B2Display panel

Publication Date: 2025.10.07 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD

AI summary

The present application relates to a display panel. Wires in an infrared light-transmitting region of the present application are located outside an opening region, thereby improving light transmittance of the opening region and improving infrared communication performance of the display panel. It prevents the wires from shielding the opening region to increase the light transmittance thereof and to reach the standard the light transmittance, which conducts infrared communication performance of the display panel improved.