Transmissive LCD Panel With Moth-Eye Film for Clear Internal Visibility
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Solution Overview
Problem
Existing display devices with transmissive liquid crystal panels do not adequately address transmittance and visibility issues, particularly when viewing internal structures through the panel.
Innovation Solution
A display device configuration that includes a transmissive liquid crystal panel with a moth-eye structured film on the lower polarizing plate, a uniform dot pattern on the light guide plate, and a gold plating layer on the substrate wiring, along with a light-shielding cover for sensitive components, to enhance visibility and reduce optical distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a transmissive liquid crystal panel is used to allow visibility of internal structures, then visibility of internal components is improved, but optical distortions and uneven transmittance increase
Solution Approach 1:
The patent applies a moth-eye structure film specifically on the lower polarizing plate rather than uniformly across all surfaces. This localized application targets the specific optical path where distortions occur when viewing internal structures through the liquid crystal panel, improving transmittance uniformity in the critical viewing region without affecting other areas of the display.
Solution Approach 2:
The moth-eye structure film acts as an intermediary layer between the lower polarizing plate and the liquid crystal layer. This intermediate structure modifies the optical path of light passing through the panel, reducing reflections and improving the uniformity of light transmission, thereby mitigating optical distortions while maintaining visibility of internal structures.
2Loss of information
If the liquid crystal panel is set to transparent state for viewing internal structures, then visibility is improved, but display contrast and readability deteriorate
Solution Approach 1:
The patent modifies the optical parameters of the lower polarizing plate by applying a moth-eye structure film, which changes the light transmission characteristics. This structural modification allows the panel to maintain better display contrast even when in transparent state for viewing internal structures, as the moth-eye structure optimizes light transmission uniformity across different viewing conditions.
3Manufacturing precision
If uniform transmittance is achieved through moth-eye structure, then visibility consistency is improved, but manufacturing complexity increases
Solution Approach 1:
Instead of making the entire liquid crystal panel structure complex, the patent applies the moth-eye structure film only on the lower polarizing plate, which is a localized approach. This targeted application achieves transmittance uniformity in the critical viewing area without requiring complex modifications throughout the entire panel structure, thus balancing manufacturing precision with device 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
Improves the visibility of internal structures by ensuring consistent transmittance and reducing optical distortions, while maintaining functional and aesthetic appeal.
Implementation Method 1
a film having a moth-eye structure is disposed on a non-viewing side surface of the lower polarizing plate
Data Source
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AI summary
A display device (1) is provided with a transmissive liquid crystal panel (2) including a liquid crystal layer (20) in which a liquid crystal material (21) is sandwiched between transparent electrodes, an upper polarizing plate (25) disposed on a viewing side of the liquid crystal layer (20), and a lower polarizing plate (26) disposed on a non-viewing side of the liquid crystal layer (20). A film (3) having a moth-eye structure is disposed on the non-viewing side surface of the lower polarizing plate (26) disposed on the non-viewing side of the liquid crystal layer (20).