Optical Adjustment Layer Reduces Display Reflectance
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Solution Overview
Problem
Current display devices suffer from high light reflectance, which can reveal the pattern of touch electrodes, degrading display quality by creating a noticeable difference between display and non-display areas.
Innovation Solution
A display device design incorporating a first shielding layer with a multilayered optical adjustment layer, where the optical adjustment layers have specific thicknesses and reflectance ranges, and a second optical adjustment layer with different color filters, along with a third optical adjustment layer on the peripheral area to reduce light reflectance and color shift, thereby improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shielding layer is added to reduce light reflectance, then display quality is improved, but device complexity increases
Solution Approach 1:
The shielding layer is divided into multiple distinct layers including a first shielding layer, a first optical adjustment layer, and a second optical adjustment layer. Each layer serves a specific function: the first shielding layer blocks light to prevent pattern visibility, while the optical adjustment layers with specific thicknesses (1-3 μm) and reflectance ranges (0.05%-1.2%) control light reflection characteristics, thereby reducing overall light reflectance and improving display quality without excessive complexity
Solution Approach 2:
The patent employs composite material structures where the shielding layer system combines materials with different optical properties. The first shielding layer uses materials with high light blocking capability, while the optical adjustment layers use materials with controlled reflectance and thickness to achieve optimal light management, creating a composite structure that effectively reduces light reflectance
2Object-affected harmful factors
If optical adjustment layers with specific thickness are used to reduce reflectance, then display quality is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for the optical adjustment layers to optimize performance while managing manufacturing feasibility. The first optical adjustment layer has a thickness of 1-3 μm and reflectance of 0.05%-1.2%, while the second optical adjustment layer has a thickness of 0.5-2 μm and reflectance of 0.03%-0.8%. These parameter specifications balance optical performance with manufacturing precision requirements
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
The solution effectively decreases light reflectance and the visibility of touch electrode patterns, enhancing display quality by minimizing the reflectance difference between display and non-display areas and reducing color shift.
Implementation Method 1
the reflectance of the first optical adjustment layer is in a range from 0.05% to 1.2%
Implementation Method 2
a refractive index of the adhesion layer is substantially equal to a half of the sum of a refractive index of the first light transmissive layer and a refractive index of the second light transmissive layer
Data Source
AI summary
A display device is provided. The display device includes a first substrate, a second substrate, a base layer, a first shielding layer, and a first optical adjustment layer. The second substrate has a third surface and a fourth surface. The base layer is disposed between the first substrate and the second substrate. The first shielding layer is disposed between the first substrate and the base layer and defines a first shielding region and a first non-shielding region. The first optical adjustment layer is disposed between the first shielding layer and the second substrate. The thickness of the first optical adjustment layer is in a range from 1 μm to 3 μm. The reflectance of the first optical adjustment layer is in a range from 0.05% to 1.2%.