Light Absorbing Layer for Metal Pattern Reflection in Display Devices
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Solution Overview
Problem
Display devices such as LCD and OLED suffer from reduced display quality due to light reflection from metal structures like gate lines and data lines, which existing technologies have not effectively addressed.
Innovation Solution
A display device is designed with a metal pattern on a substrate, accompanied by a light absorbing layer, quarter wave plate, and half wave plate, where the light reflected by the metal pattern passes through the wave plates in a sequential order before being absorbed by the light absorbing layer, which can be made of a mixture of polymer liquid crystal molecules and dichroic dye molecules, to minimize light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal structures (gate lines, data lines) are used in display devices, then electrical conductivity and device functionality are improved, but light reflection increases reducing display quality
Solution Approach 1:
A light absorbing layer is introduced as an intermediary component between the metal pattern and the incident light. This layer selectively absorbs reflected light wavelengths while allowing other light to pass through, thereby reducing the harmful reflection effect without interfering with the metal pattern's electrical functionality
Solution Approach 2:
The light absorbing layer is designed with specific optical absorption characteristics that selectively absorb certain wavelengths of reflected light. By controlling the absorption spectrum of this layer, the reflection color and intensity are modified to reduce visual glare while maintaining display quality
2Object-affected harmful factors
If a light absorbing layer is added to reduce light reflection, then display quality is improved, but device complexity increases
Solution Approach 1:
The light absorbing layer is integrated into existing display device layers, serving multiple functions: absorbing reflected light, maintaining optical transparency for display viewing, and compatible with standard manufacturing processes. This multi-functionality approach reduces the need for additional separate components
Solution Approach 2:
The thickness and material composition of the light absorbing layer are optimized to achieve effective light absorption with minimal impact on display performance. By carefully controlling layer parameters, the solution achieves reflection reduction without requiring complex multi-layer structures
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
This configuration significantly enhances display quality by effectively absorbing light reflected from the metal patterns, thereby reducing glare and improving image clarity.
Implementation Method 1
a first light absorbing layer positioned to absorb light reflected by the metal pattern
Implementation Method 2
a first quarter wave plate and a first half wave plate... light reflected by the metal pattern passes through the first quarter wave plate and the first half wave plate
Data Source
AI summary
The present application discloses a display device having a metal pattern on a substrate of a display device and a light absorbing layer positioned to absorb light reflected by the metal pattern, and a manufacturing method thereof. The light absorbing layer has a pattern corresponding to at least a portion of the metal pattern.