Transparent Watch Cover Structure for Hidden Alignment Marks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wristwatch designs with solar panels and transparent dials face issues with visibility of internal components due to light-blocking stickers and misalignment of positioning marks, compromising aesthetic appearance and functionality.
Innovation Solution
A cover structural body with a transparent watch glass, a light absorption layer, semi-light-transmissive layer, and positioning mark sections that absorb or tint specific wavelengths, allowing precise alignment and obscuring internal components from view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent dial plate is used to allow light transmission, then light transmission is improved, but internal components become visible compromising aesthetic appearance
Solution Approach 1:
The light-blocking function is segmented into specific positioning mark portions rather than covering the entire dial plate. The semi-light-transmissive layer is also segmented to extend only around the positioning mark portions, creating localized light blocking zones that maintain overall transparency while preventing internal component visibility at critical areas.
Solution Approach 2:
The dial plate transitions from uniform transparency to having localized light-blocking properties. The semi-light-transmissive layer is applied selectively around the positioning mark portions, creating areas with different optical properties. This allows the majority of the dial plate to remain transparent for light transmission while specific local areas block light to maintain aesthetic appearance.
2Manufacturing precision
If positioning marks are made visible for alignment, then alignment precision is improved, but misalignment detection becomes possible compromising appearance
Solution Approach 1:
The semi-light-transmissive layer acts as an intermediary that covers the positioning marks after alignment is achieved. During manufacturing, the visible positioning marks enable precise alignment, and afterward the semi-light-transmissive layer is applied to obscure these marks, preventing misalignment detection while maintaining the alignment precision that was achieved.
Solution Approach 2:
The positioning marks are provided in advance on the dial plate before the semi-light-transmissive layer is applied. This preliminary provision of visible marks enables precise alignment during assembly, and subsequent application of the semi-light-transmissive layer obscures them to maintain appearance.
3Shape
If light-blocking stickers are directly attached to block internal components, then obscuring internal structures is improved, but positioning accuracy deteriorates due to lack of precise positioning marks
Solution Approach 1:
Instead of attaching light-blocking stickers directly to block internal components, the approach is inverted: positioning marks are first provided on the dial plate for precise positioning, then a semi-light-transmissive layer is applied around these marks to achieve both positioning accuracy and obscuring functionality simultaneously.
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
Ensures correct positioning of the solar panel and obscures internal structures, maintaining a sleek appearance by absorbing unwanted light and preventing misalignment detection.
Implementation Method 1
a cover member through which at least visible light passes and which is provided with at least one first positioning mark portion that absorbs visible light
Implementation Method 2
a semi-light-transmissive layer which is provided at same height as or below the first positioning mark portion while extending around the first positioning mark portion in a planar view from a certain direction, through which light of certain visible wavelength bands passes, and by which light of other visible wavelength bands is absorbed
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cover structural body (6) including a cover member (8) through which at least visible light passes and which is provided with at least one first positioning mark portion (13) that absorbs visible light, a semi-light-transmissive layer (14) which is provided below the first positioning mark portion (13) while extending around the first positioning mark portion (13) in a planar view from a certain direction, through which light of certain visible wavelength bands passes, and by which light of other visible wavelength bands is absorbed, and a cover target member (9) which is provided under the semi-light-transmissive layer (14), and in which at least one second positioning mark portion (15) where visible light passes through is provided at a portion to be covered by the first positioning mark portion (13) in the planar view from the certain direction.