Metal Wire Grid Polarizing Layer Insulation in Display Assembly
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Solution Overview
Problem
Existing dual cell liquid crystal display apparatuses face challenges in optimizing the placement of metal wire grid polarizing layers, which can interfere with electric fields and reduce the efficiency of liquid crystals, leading to suboptimal brightness control and contrast.
Innovation Solution
The display assembly incorporates a first and second metal wire grid polarizing layer, electrically insulated from the pixel circuit layers, and buffer layers to minimize interference with electric fields, allowing for improved deflection angles of liquid crystals and enhanced light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a metal wire grid polarizing layer is placed close to the pixel circuit layer to reduce assembly thickness, then the display assembly becomes thinner, but the metal wire grid polarizing layer interferes with the electric field, reducing liquid crystal efficiency
Solution Approach 1:
An insulating layer is introduced as an intermediary between the metal wire grid polarizing layer and the pixel circuit layer. This insulating layer acts as a mediator that prevents direct electrical interaction while maintaining the close proximity needed for thin display assembly, thus preserving liquid crystal efficiency while achieving thickness reduction.
2Device complexity
If the metal wire grid polarizing layer is electrically connected to the pixel circuit layer to simplify structure, then the structure becomes simpler, but the polarizing layer interferes with electric fields and reduces brightness control
Solution Approach 1:
The insulating layer serves as a non-conductive intermediary that maintains electrical isolation between the metal wire grid polarizing layer and the pixel circuit layer. This prevents harmful electrical interference that would affect brightness control, while the overall structure remains relatively simple with only one additional layer.
3Ease of manufacture
If the metal wire grid polarizing layer is placed without electrical insulation to reduce manufacturing steps, then the manufacturing process is simplified, but the liquid crystal deflection angle and light transmittance are reduced
Solution Approach 1:
The insulating layer is introduced as a thin intermediary structure that can be integrated into the existing manufacturing process. While it adds one more layer, it prevents electrical interference that would otherwise require complex adjustments to the metal wire grid design, and it enables better light transmittance and liquid crystal deflection angle without significantly complicating the overall manufacturing process.
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 enhances the efficiency of liquid crystals, improving brightness control and contrast by reducing the influence of polarizing layers on electric fields, resulting in better light utilization and thinner display assemblies.
Implementation Method 1
a first metal wire grid polarizing layer disposed between the first substrate and the first pixel circuit layer, wherein the first metal wire grid polarizing layer is electrically insulated from the first pixel circuit layer
Implementation Method 2
a first liquid crystal layer located between the first substrate and the second substrate, a second liquid crystal layer located between the third substrate and the first substrate
Data Source
AI summary
A display assembly, includes: a first substrate and a second substrate that are disposed opposite, a first liquid crystal layer located between the first substrate and the second substrate, a third substrate disposed at a side of the first substrate away from the second substrate, a second liquid crystal layer located between the first substrate and the third substrate, a first pixel circuit layer disposed between the first substrate and the first liquid crystal layer, a second pixel circuit layer disposed between the third substrate and the second liquid crystal layer, a polarizing device disposed on a side of the second pixel circuit layer away from the second liquid crystal layer, and a first metal wire grid polarizing layer disposed between the first substrate and the first pixel circuit layer. The first metal wire grid polarizing layer is electrically insulated from the first pixel circuit layer.