Refrigerator Display Diffusion Sheet for Uniform Light Distribution
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Solution Overview
Problem
Conventional refrigerator displays have a non-uniform diffusion area and are prone to scratches due to the use of polycarbonate, which lacks durability compared to glass or acryl, and struggle to vary illumination colors smoothly.
Innovation Solution
A display system featuring a front cover with a printed layer and a diffusion sheet that uniformly diffuses light, allowing for varied illumination colors and enhanced durability by using materials like glass or acryl, with a unified color scheme for the display window and other portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If diffusion ink is directly sprayed on the rear surface of the operational control signal input unit to form the diffusion area, then the diffusion area can be formed, but the boundary portion of the diffusion area is clearly defined and it is difficult to partly vary a color of the diffusion ink
Solution Approach 1:
The front cover is divided into multiple color regions corresponding to different operational signal input units. Each color region can be independently colored with different diffusion ink colors, allowing separate color variation for each section while maintaining uniform diffusion within each section.
Solution Approach 2:
Different portions of the front cover are assigned different color properties. The diffusion ink is applied to specific local regions (color regions) rather than uniformly across the entire surface, enabling localized color variation while maintaining consistent diffusion quality in each region.
2Ease of manufacture
If the operation control signal input unit is formed of polycarbonate to allow diffusion ink absorption, then the diffusion area can be formed, but the front surface might be easily scratched or torn due to less strength and durability
Solution Approach 1:
The front cover uses a composite structure combining a durable base material (glass or acryl) with a separate diffusion ink application layer. The base material provides scratch and tear resistance, while the diffusion ink is applied to the rear surface to provide coloring and diffusion functions without compromising the structural integrity of the front surface.
3Manufacturing precision
If a diffusion sheet is attached on the front cover, then the diffusion area can be formed to be clean and sleek with uniform light distribution, but the device complexity increases
Solution Approach 1:
A diffusion sheet is introduced as an intermediary component between the light source and the front cover. This thin sheet uniformly scatters light across the color regions, achieving clean and sleek light distribution without requiring complex internal light guiding structures or multiple light sources.
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 provides a sleek, clean, and uniformly lit display with varied illumination colors, improving durability and aesthetics by using a diffusion sheet on the rear of the front cover, regardless of the material, and enhancing the sense of unity in design.
Implementation Method 1
a diffusion sheet provided in rear of the front cover and uniformly diffusing the light
Data Source
AI summary
A display for a refrigerator, which can uniformly form a diffusing area, is provided. The display includes a process unit receiving a variety of operation signals for operating the refrigerator, a front cover provided in front of the process unit and including a pushing portion displaying an input location of a user and a light transmission portion transmitting light, and a diffusion sheet provided in rear of the front cover and uniformly diffusing the light.