Hidden Display Decoration Film with Internal Light Guidance
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Solution Overview
Problem
Existing decoration films for hidden displays fail to enhance user visibility and design aesthetics while preventing light distortion, light leakage, and layer delamination, particularly in applications like vehicle dashboards and home appliances.
Innovation Solution
A decoration film comprising a base layer, a decorative layer with through-holes, an optical guide layer with protruding light guiders, and optionally a shielding layer, designed to improve visibility and design aesthetics by guiding light through internal reflections and preventing layer delamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metal coating is applied to increase shielding effect, then light leakage is prevented, but the touch function of the display does not work
Solution Approach 1:
The decoration film is divided into multiple functional layers: a base layer, a decorative layer with through-holes, and an optical guide layer with light guiders. This segmentation allows each layer to perform its specific function - the decorative layer provides shielding when needed while the optical guide layer manages light transmission, preventing light leakage without blocking touch functionality.
Solution Approach 2:
The optical guide layer contains light guiders positioned specifically at through-hole locations where light transmission is needed. This local optimization allows light to pass through designated areas while other regions maintain shielding properties, enabling both light leakage prevention and touch function preservation in different locations of the same structure.
2Shape
If a decoration film is used to hide the display, then aesthetics are improved, but user visibility of display information deteriorates
Solution Approach 1:
The decorative layer can change its optical properties based on the state of the display. When the display is active, the decoration film becomes transparent or translucent to allow visibility of display information. When the display is inactive, the decorative layer maintains its aesthetic appearance, effectively changing its visual characteristics based on operational state.
Solution Approach 2:
The decoration film transitions between different optical states dynamically. The optical guide layer responds to light from the display, changing from a state that provides aesthetic coverage to a state that allows light transmission and information visibility, making the decoration film adaptive rather than static.
3Adaptability or versatility
If layers are stacked to create a multi-functional decoration film, then visibility and shielding are improved, but layer delamination occurs
Solution Approach 1:
The decoration film uses composite material structure with a base layer, decorative layer, and optical guide layer made of compatible materials that work together. The materials are selected and combined to ensure strong inter-layer adhesion while maintaining the specific optical and aesthetic properties needed for each function, preventing delamination despite the multi-layer construction.
Solution Approach 2:
Multiple functions are merged into a single integrated decoration film structure rather than using separate layers that could delaminate. The base layer, decorative layer, and optical guide layer are combined into one cohesive unit with strong bonding interfaces, merging aesthetic coverage, light shielding, and light guidance functions into a single stable component.
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 film enhances user visibility of display information by guiding light through internal reflections and prevents layer delamination, while maintaining design unity and aesthetics when the display is operated or not.
Implementation Method 1
The optical guide layer includes a foundation configured to be disposed between the base layer and the decorative layer and at least one light guider configured to have a protrusion extending from the foundation and passing through the through-hole and protruding above the through-hole
Data Source
Figure 1A
Figure 1B
Figure 2~3
AI summary
The present invention relates to a decoration film for a hidden display and, more specifically, to a decoration film for a hidden display, which may allow, in a state in which a display is not operated in a normal situation, the decoration film to be displayed on a surface of the display to improve a sense of unity with a surrounding decoration film, and allow, in a situation in which a user turns on the display and operates the display, user visibility with respect to display information of the display to be improved and concurrently prevent delamination of layers.