Transparent Pane Annular Gauge Display Panel Parallax
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Solution Overview
Problem
Existing motor vehicle display devices face constraints in using large display panels due to the integration of annular gauges, as the gauge's presence limits panel size and can cause parallax errors, and current technologies are costly for producing non-rectangular panels.
Innovation Solution
A display device with an annular gauge supported by a transparent pane that allows for a larger display panel size, featuring a support ring and optical guides for illumination and parallax reduction, enabling the panel to display information both within and around the gauge without design constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a traditional annular gauge with opaque support structure is used, then the gauge provides stable support and clear readings, but the display panel size is constrained and parallax errors occur
Solution Approach 1:
The patent applies transparency changes to the support structure. The pane is made transparent (or translucent) instead of opaque, allowing the display panel to be visible through it. This resolves the contradiction by eliminating the visual obstruction caused by traditional opaque support structures, enabling larger display panels while maintaining structural support functionality.
Solution Approach 2:
The patent introduces a specifically designed transparent pane as an intermediary element between the display panel and the annular gauge. This pane serves multiple functions: it provides structural support for the gauge, allows light transmission for the display panel, and positions the gauge at an optimal distance to reduce parallax effects. The intermediary structure resolves the contradiction by mediating between the conflicting requirements of structural support and visual clarity.
2Ease of manufacture
If a rectangular display panel is used with traditional gauge integration, then manufacturing costs increase due to custom shaping requirements, but information display capability is improved
Solution Approach 1:
The patent segments the display system into distinct functional zones: the transparent pane area for the annular gauge and the surrounding rectangular panel area for additional information display. This segmentation allows the use of standard rectangular panel manufacturing techniques while maintaining the circular gauge functionality, resolving the contradiction between manufacturing ease and display flexibility.
Solution Approach 2:
The transparent pane serves multiple functions simultaneously: it acts as a structural support for the gauge, a light transmission medium for the display panel, and a positioning element for reducing parallax. This multi-functionality eliminates the need for custom-shaped panels, allowing standard rectangular panels to be used while achieving versatile information display capabilities.
3Measurement precision
If the gauge occupies the central display area, then the gauge provides accurate readings, but the available display surface area is reduced
Solution Approach 1:
The patent utilizes the third dimension (depth) by positioning the annular gauge at a specific distance behind the transparent pane, creating a layered structure. This dimensional arrangement allows the gauge to occupy its necessary space for accurate readings while the transparent pane in front maintains full visual access to the display panel, effectively increasing the usable display surface area without compromising measurement precision.
Data Source
AI summary
A display device for a motor vehicle having at least one annular gauge (1) and a display panel (2) having a display surface (20) intended to be oriented toward the inside of a passenger compartment of the vehicle. The device comprises a transparent pane (4) positioned facing the display surface (20) and serving as a support for the annular gauge (1).