Frameless Button Lens for Invisible Display
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Solution Overview
Problem
Conventional display devices with frames are limited in miniaturization, suffer from image distortion when viewed from different angles, and cannot completely remove the frame, especially in narrow-framed and bendable display configurations.
Innovation Solution
A frameless-display device with a lens featuring a curved surface, depression, and inclined surface on the periphery, where blast processing is applied to eliminate glare and make the frame invisible, allowing for a miniature switch that operates by displaying images on the entire button surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a frame is made narrow (1 mm or less in width), then the display area is increased, but the frame cannot be removed completely
Solution Approach 1:
The frame is completely extracted and removed from the button structure. The display device is mounted directly on the button top surface without any frame, achieving complete frame removal rather than just narrowing it. This allows the display area to extend to the entire button surface.
Solution Approach 2:
The display surface is extended from a traditional framed rectangular area to the entire three-dimensional button surface, utilizing the button's top surface fully without frame constraints. This dimensional expansion allows images to be displayed across the complete button area.
2Area of stationary object
If a lens is mounted on top of a display panel to enlarge the image, then the display area is increased, but image distortion occurs depending on viewing angle
Solution Approach 1:
The button top surface is designed with a curved surface rather than a flat plane. This curvature is optimized to reduce image distortion when viewed from different angles, providing a more consistent display quality across various viewing positions while maintaining full-button display area.
3Adaptability or versatility
If a film-like bendable display member is used, then the display can be flexible, but miniaturization cannot be achieved because a certain size is required to make the display member bendable
Solution Approach 1:
The mechanical bendable display member is replaced with a rigid display panel mounted on a curved button surface. The flexibility and curvature adaptation are achieved through the button's own curved structure rather than through a flexible display membrane, enabling miniaturization while maintaining adaptability to the button's three-dimensional form.
4Area of stationary object
If the display covers the entire button surface, then the frame is removed, but glare may occur on the curved surface
Solution Approach 1:
The curved surface that could potentially cause glare is treated with blast processing to create a matte finish. This converts the potential harmful reflection into a beneficial diffuse scattering effect, eliminating glare while maintaining the full-button curved display surface.
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 removes the visible frame, preventing image distortion and enabling miniaturization by displaying images on the entire button surface without visible frames, even when viewed from different angles, and improves display quality by eliminating glare.
Implementation Method 1
a lens (9) and a button cover (8A), wherein the lens (9) is disposed on top of the button (8)
Implementation Method 2
a curved surface formed on the periphery of the top surface of the lens
Implementation Method 3
an inclined surface formed at the step and inclined towards the center of the lens
Implementation Method 4
the blast processing is performed on the curved surface formed on the periphery of the top surface of the lens
Data Source
Figure 1~2
Figure 3~4(b)
Figure 5
AI summary
There is provided a frameless display device in which a frame on the periphery of a display portion is made invisible. The frameless display device makes the frame on the top surface of a button 8 invisible to display an image on the entire surface of the button 8, wherein the button 8 has a lens 9 and a button cover 8A, wherein a display device 6 is provided below the lens 9, and wherein the lens 9 disposed on top of the button 8 includes a curved surface 9A formed on the periphery of the top surface of the lens 9, a depression formed on the bottom surface of the lens, a step formed at the periphery of the lens, and an inclined surface formed at the step and inclined towards the center of the lens 9.