Display Device Light Barrier Element Stray Light Control
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Solution Overview
Problem
Display devices with illuminable functional elements in vehicles face issues with stray light contamination between separate elements, leading to unintended illumination of neighboring features, which is undesirable for both functionality and customer experience.
Innovation Solution
A display device design incorporating a light barrier element within the rear support layer, comprising pigments or gas inclusions, that extends vertically between functional elements to reduce or prevent light scattering, ensuring only intended elements are illuminated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source is placed behind the display device to illuminate functional elements, then the functional elements become visible and informative, but stray light contamination occurs between neighboring functional elements causing unintended illumination
Solution Approach 1:
A light barrier element is introduced as an intermediary component between the light source and the functional elements. This light barrier element selectively blocks stray light while allowing intended light to pass through to illuminate the functional elements, thereby preventing contamination between neighboring elements.
Solution Approach 2:
The light barrier element is positioned at specific locations between functional elements rather than uniformly across the entire display. This localized approach blocks stray light in critical areas while maintaining overall light transmission and illumination quality for the functional elements.
2Quantity of substance
If multiple functional elements are arranged closely together on the display device, then the information density increases, but light scattering between elements causes neighboring elements to become visible when they should not be
Solution Approach 1:
The light barrier element serves as a mediator between closely spaced functional elements, preventing light from one element from scattering into adjacent elements. This enables higher information density without sacrificing optical isolation between elements.
Solution Approach 2:
The display device is segmented into distinct optical zones by the light barrier element, which divides the light path between functional elements. This segmentation prevents cross-contamination of light while maintaining close spacing of elements for high information density.
3Ease of manufacture
If equipment parts are activated at a later date for additional features, then cost-effective vehicle manufacturing is achieved, but light contamination of non-activated functional elements should be avoided for customer experience
Solution Approach 1:
The light barrier element acts as a permanent optical separator that prevents light from reaching non-activated functional elements. This ensures that even when equipment is activated later, non-activated elements remain dark and do not create light contamination or confuse the customer.
Solution Approach 2:
The light barrier element is pre-installed in the display device during manufacturing to prevent potential light contamination issues before the vehicle is delivered to the customer. This preliminary protective measure ensures that future activation of equipment parts will not cause light leakage to non-activated elements.
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 minimizes stray light contamination, enhancing the visibility of intended functional elements while maintaining a day-night design aesthetic, ensuring clarity and reducing unnecessary light exposure.
Implementation Method 1
the light barrier element is adapted for reducing or preventing light scattering through the light barrier element
Implementation Method 2
the light barrier element is adapted for reducing or preventing light scattering through the light barrier element
Implementation Method 3
the light barrier element comprises a pigment and is formed in the rear support layer, such that the pigment exists as particle in the material of the rear support layer
Implementation Method 4
the light barrier element comprises inclusions of a gas, preferably in form of bubbles, and is formed in the rear support layer
Data Source
Figure 1~2b
Figure 3a~3b
AI summary
The invention is directed to a display device (10) with illuminable functional elements (28), comprising: at least one functional layer (14), at least one rear support layer (16), and at least one light barrier element (32), wherein the functional layer (14) comprises at least two functional elements (28a, 28b), wherein the rear support layer (16) comprises at least one light barrier element (32), wherein the light barrier element (32) comprises a pigment and is formed in the rear support layer (16), such that the pigment exists as particle in the material of the rear support layer and/or wherein the light barrier element (32) comprises inclusions of a gas (40), preferably in form of bubbles,and is formed in the rear support layer (16), wherein the light barrier element (32) is adapted for reducing or preventing light scattering through the light barrier element (32).