Prismatic Glass Mirror with Transflective Layer and Black Film
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Solution Overview
Problem
Existing vehicle inside mirror devices with transflective layers suffer from reduced mirror functionality and complex structures, and require additional display units that are difficult for drivers to view, especially when reversing.
Innovation Solution
A vehicle inside mirror device with a prismatic glass having a transparent transflective layer on its rear surface and a black film at the rear, combined with a liquid crystal display (LCD) module and control circuit unit, which enhances mirror functionality and simplifies the structure by directly forming the transflective layer without a substrate, and includes features like heat-radiating apertures and electromagnetic interference protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transflective layer is provided on the rear surface of a prismatic glass in a vehicle inside mirror device, then the display function is improved, but the mirror function of the prism mirror is lowered
Solution Approach 1:
The patent applies local quality by providing a black film at a specific location (rear side of the prismatic glass) rather than uniformly across the entire structure. This localized treatment enhances the mirror function in the specific area where it is most needed, while preserving the display function of the transflective layer in other areas.
Solution Approach 2:
The patent uses composite materials by combining the prismatic glass with a black film and a transflective layer. This composite structure allows the device to simultaneously achieve both display functionality (through the transflective layer) and enhanced mirror functionality (through the black film's light absorption properties).
2Device complexity
If a substrate is not employed in the inside mirror structure, then the device complexity is reduced, but the manufacturing precision becomes more difficult
Solution Approach 1:
The patent merges multiple functions into fewer components by directly forming the transflective layer on the rear surface of the prismatic glass without using a separate substrate. This consolidation reduces the number of parts and simplifies the overall structure while maintaining manufacturing precision through direct formation processes.
Solution Approach 2:
The patent extracts and removes the substrate component from the traditional mirror structure, eliminating the need for this separate element. By taking out the substrate, the design achieves structural simplification while the transflective layer is directly applied to the prismatic glass surface.
3Reliability
If an additional display unit is provided around the driver's seat for rear image acquisition, then the rear visibility is improved, but the device complexity increases and the ease of operation is reduced
Solution Approach 1:
The patent applies universality by making the inside mirror device perform multiple functions: it serves as both a traditional mirror (through the prismatic glass and black film) and as a display device (through the transflective layer and LCD module). This multi-functionality eliminates the need for separate display units, reducing overall device complexity while improving rear visibility.
Solution Approach 2:
The patent merges the display function with the mirror structure by integrating the LCD module behind the transflective layer. This combination allows rear image information to be displayed through the mirror itself, eliminating the need for additional separate display units around the driver's seat.
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 enhances the mirror function of the prismatic glass while maintaining a simple structure, allowing drivers to view rear images and distance information from the LCD module, even in varying light conditions, without additional display units, thereby improving rear visibility and convenience.
Implementation Method 1
a transparent transflective layer formed on a rear surface of the prismatic glass
Implementation Method 2
transparent transflective layer
Implementation Method 3
a black film provided at a rear side of the prismatic glass
Implementation Method 4
a liquid crystal display (LCD) module provided at a rear side of the opening of the black film
Implementation Method 5
a prismatic glass provided on a front side of the housing
Implementation Method 6
prismatic glass
Data Source
AI summary
A vehicle inside mirror device for displaying an image, which can obtain an enhanced mirror function of a prismatic glass caused by a black film provided at a rear side of a prismatic glass and has a relatively simple structure made by forming directly a transflective layer on a rear surface of a prismatic glass without using a substrate. The vehicle inside mirror device comprises a housing mounted in a passenger compartment of a vehicle; a prismatic glass provided on a front side of the housing and having a transparent transflective layer formed on a rear surface thereof; a black film provided at a rear side of the prismatic glass and having an opening formed on one side thereof; a liquid crystal display (LCD) module provided at a rear side of the opening of the black film; and a control circuit unit installed at a rear side of the LCD module.