Touch Device Anti-Dazzle Layer to Reduce Rainbow Stripe Interference
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Solution Overview
Problem
Conventional touch screens with birefringence materials exhibit a rainbow stripe phenomenon due to light interference, which cannot be completely eliminated by adjusting the rainbow stripe direction, increasing product costs and reducing market competitiveness.
Innovation Solution
Incorporating an anti-dazzle layer between the touch functional layer and the cover plate, which scatters light to reduce or eliminate the rainbow stripe, using a high-reflectivity low-transmittance glass cover plate and anti-dazzle film with convex parts to manage light scattering effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a cover plate with high reflectivity is used to enhance reflective functionality, then the reflective performance is improved, but the rainbow stripe phenomenon becomes more prominent due to increased light interference
Solution Approach 1:
An anti-dazzle layer is introduced as an intermediary component between the cover plate and the display panel. This layer acts as a mediator that scatters light to reduce the rainbow stripe phenomenon while allowing the cover plate to maintain its high reflectivity for enhanced reflective functionality.
Solution Approach 2:
The light scattering function is extracted from the cover plate itself and placed into a separate anti-dazzle layer. This allows the cover plate to focus on providing high reflectivity while the dedicated anti-dazzle layer handles the light scattering to eliminate rainbow stripes.
2Illumination intensity
If the rainbow stripe direction is adjusted to reduce its visibility, then the display performance is improved, but the product cost increases due to additional manufacturing complexity
Solution Approach 1:
Instead of trying to eliminate light scattering completely, the invention converts the harmful light interference that causes rainbow stripes into a beneficial light scattering effect. The anti-dazzle layer uses scattered light to reduce rainbow stripe visibility while maintaining acceptable display performance, turning a manufacturing challenge into a solution.
3Object-generated harmful factors
If an anti-dazzle layer is added to scatter light and reduce rainbow stripe, then the rainbow stripe phenomenon is eliminated, but the device structure becomes more complex
Solution Approach 1:
The anti-dazzle layer is implemented as a thin film structure rather than a bulky component. This thin film approach effectively scatters light to eliminate rainbow stripes while adding minimal structural complexity and maintaining a compact device design.
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 anti-dazzle layer effectively scatters light, reducing or eliminating the rainbow stripe, thereby enhancing display performance and maintaining reflective functionality while minimizing product costs.
Implementation Method 1
an anti-dazzle layer, the anti-dazzle layer being disposed between the touch functional layer and the cover plate, and the anti-dazzle layer being configured to scatter light incident on the anti-dazzle layer
Implementation Method 2
Refracted light inside the birefringence material may be reflected for multiple times at an upper surface and a lower surface of the material, and an interference phenomenon occurs while the reflected light meets an optical path difference condition, so as to form the rainbow stripe
Implementation Method 3
The rainbow stripe is an optical phenomenon uniquely occurring for birefringence materials
Data Source
AI summary
A touch device, a manufacturing method thereof and an intelligent mirror are disclosed. The touch device includes: a touch functional layer, configured to sense an occurrence of touch; a cover plate located on the touch functional layer; and an anti-dazzle layer, the anti-dazzle layer being disposed between the touch functional layer and the cover plate, and the anti-dazzle layer being configured to scatter light incident on the anti-dazzle layer.