Wire Grid Polarizing Plate Buffer Layer UV Protection
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Solution Overview
Problem
Polarizing plates in LCD devices suffer from a reduction in polarized transmission rate over time due to absorption of high-energy light, leading to decreased adhesive force and light-reflecting capacity, which shortens their lifespan and affects display quality.
Innovation Solution
Incorporating a buffer layer between the conductive lattice lines and the base layer in the polarizing plate, using materials like titanium, tungsten, or organic layers to protect the conductive lattice lines from ultraviolet light, thereby maintaining their light-reflecting and adhesive properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive lattice lines are used as polarizing plate, then polarizing degree is improved, but adhesive force and light-reflecting rate deteriorate over time due to UV light absorption
Solution Approach 1:
A buffer layer is introduced as an intermediary between the conductive lattice lines and the base layer. This buffer layer absorbs UV light before it reaches the conductive lattice lines, protecting them from degradation. The buffer layer acts as a mediator that prevents direct contact between harmful UV radiation and the conductive lattice lines, thereby maintaining their adhesive force and light-reflecting rate over time.
Solution Approach 2:
The buffer layer converts the harmful UV light absorption into a beneficial protective function. By positioning the buffer layer to absorb UV light, the harmful effect of UV radiation is transformed into a protective mechanism that preserves the conductive lattice lines. The buffer layer's ability to absorb UV light is utilized as a protective feature rather than a detriment.
2Illumination intensity
If conductive lattice lines are exposed to UV light, then light-reflecting rate is maintained initially, but adhesive force decreases over time
Solution Approach 1:
The buffer layer serves as a protective intermediary that prevents UV light from directly affecting the interface between the conductive lattice lines and the base layer. By absorbing UV light, the buffer layer protects the adhesive interface from degradation, thereby maintaining both light-reflecting rate and adhesive force over time.
3Duration of action of stationary object
If buffer layer is added to protect conductive lattice lines, then lifetime is extended, but device complexity increases
Solution Approach 1:
The buffer layer is implemented as a thin film structure that provides protection without significantly increasing device complexity. The thin film nature of the buffer layer allows it to be integrated seamlessly into the existing polarizing plate structure, adding protective functionality while minimizing structural complexity.
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 buffer layer effectively prevents the degradation of conductive lattice lines, maintaining their light-reflecting rate and adhesive force, thus extending the lifespan of the polarizing plate and enhancing display quality by stabilizing the polarized transmission rate.
Implementation Method 1
The conductive lattice lines reflect and polarize incident light
Implementation Method 2
the polarizing plate transmits light polarized in a predetermined direction
Implementation Method 3
high-energy light such as ultraviolet ('UV') light is absorbed so that the temperature of the conductive lattice lines is increased
Data Source
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AI summary
A polarizing plate (5) includes a base layer (10), a buffer layer (35) and a plurality of conductive lattice lines (31). The buffer layer (35) is formed on the base layer (10). The conductive lattice lines are formed on the buffer layer in a stripe shape to reflect and polarize incident light. The buffer layer protects the conductive lattice lines. The conductive lattice lines include a silver (Ag) layer or an aluminum (Al) layer. Therefore, the buffer layer protects the conductive lattice lines, so that the lifetime of the polarizing plate may be increased. Furthermore, the display quality of a display panel and a display device having the polarizing plate may be enhanced.