Visual Angle Control Film Light-Shielding Patterns
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Solution Overview
Problem
Display devices in vehicles face interference phenomena, such as Moire Artifacts, due to the interaction between the display panel and the visual angle control film, which deteriorates display performance and allows unnecessary light to reach the driver, requiring a solution to attenuate these issues.
Innovation Solution
A visual angle control film with light-shielding patterns having specific thickness, interval, and slope angle ranges (8% to 25% of pixel area, 33% to 39% of pixel size, and ±5° to 15° based on 90°) is applied to the display panel, allowing for adjustable light-shielding in both visual angle control and non-control modes to minimize Moire Artifacts and shield unnecessary light effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a visual angle control film with light-shielding pattern is disposed on the display panel, then light shielding toward the driver is achieved, but Moire Artifact interference phenomenon occurs between the pixel structure and light-shielding pattern
Solution Approach 1:
The patent applies parameter changes by optimizing the thickness, interval, and slope angle of the light-shielding patterns to specific ranges (thickness: 8%-25% of pixel area, interval: 33%-39% of pixel size, slope angle: ±5° to 15° from vertical). These parameter adjustments reduce the Moire Artifact interference while maintaining effective light shielding toward the driver.
Solution Approach 2:
The light-shielding patterns are designed with asymmetric slope angles relative to the vertical direction, creating different shielding characteristics for different viewing angles. This asymmetric design helps differentiate the interference patterns from the pixel structure, thereby reducing Moire Artifact visibility while preserving directional light control.
2Object-affected harmful factors
If the light-shielding pattern thickness is increased to improve light shielding, then more light is blocked toward the driver, but the Moire Artifact interference becomes more pronounced
Solution Approach 1:
The patent establishes an optimal thickness range of 8%-25% of the pixel area, which balances light blocking capability with Moire Artifact suppression. This parameter optimization ensures sufficient light shielding toward the driver while preventing excessive pattern visibility that would degrade display quality.
3Object-affected harmful factors
If the interval between light-shielding patterns is decreased to enhance shielding coverage, then light control is improved, but the interference pattern visibility increases
Solution Approach 1:
The patent specifies an interval range of 33%-39% of the pixel size between adjacent light-shielding patterns. This interval optimization provides sufficient shielding coverage to control visual angles effectively while maintaining spacing that minimizes the visibility of interference patterns between the film and pixel structure.
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 reduces Moire Artifacts and improves display performance by optimizing light-shielding patterns, ensuring better image visibility for passengers while shielding light from the driver, thus enhancing the overall display quality and safety.
Implementation Method 1
a visual angle control film disposed on the display panel, wherein the visual angle control film includes a plurality of light-shielding patterns for shielding light advancing in a side direction
Implementation Method 2
light-shielding patterns for shielding light advancing in a side direction
Data Source
AI summary
A display device having a visual angle control film can attenuate an interference phenomenon between a panel and a visual angle control film and effectively shield unnecessary light of a visual angle, the display device comprises a display panel; and a visual angle control film disposed on the display panel, wherein the visual angle control film may include a plurality of light-shielding patterns for shielding light advancing in a side direction except a front direction of the display panel in a visual angle control mode, and each of the plurality of light-shielding patterns may have a thickness in the range of 8% to 25% of a pixel area of the display panel, an interval in the range of 33% to 39% of the pixel size, and a slope angle in the range of ±5° to 15° based on 90°.