Convex Touch Plate Infrared Grid Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Variances in manufactured glass used in interactive flat panel displays can affect the reliability of touch input detection, necessitating improved designs to address these variances and enhance touch input performance.
Innovation Solution
A touch-sensing apparatus featuring a display panel, a touch plate with a convex surface, and a frame assembly that supports the plate in front of the display, with a method of manufacturing involving a convex glass plate positioned to extend outward from the frame, and an infrared grid that bends around the touch surface to ensure accurate touch input detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flat glass plate is used in the touch display, then the manufacturing process is simple and consistent, but variances in manufactured glass can affect the reliability of touch input detection
Solution Approach 1:
The patent applies curvature to the glass plate by forming it into a convex shape with a specific radius of curvature. This curvature compensates for manufacturing variances in flat glass by creating a predictable geometric profile that improves touch input detection reliability. The curved surface allows the infrared grid to bend accordingly, maintaining detection accuracy across the touch surface.
2Measurement precision
If the infrared grid is positioned close to the touch surface for accurate detection, then touch input precision improves, but glass curvature variations cause detection inaccuracies
Solution Approach 1:
The infrared grid is configured to bend around the convex touch surface, following the curved geometry. This allows the grid to maintain optimal proximity to the touch surface for accurate detection while accommodating glass curvature variations. The grid's flexible configuration ensures consistent detection accuracy across the entire touch surface regardless of underlying glass variations.
3Reliability
If a convex glass plate is used to improve touch detection, then reliability of touch input detection is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent specifies a radius of curvature parameter for the convex glass plate that balances manufacturing feasibility with performance improvement. By defining specific curvature parameters, the invention makes the manufacturing process more controllable and repeatable, reducing the complexity associated with creating non-standard curved glass components.
Data Source
AI summary
In particular embodiments, the touch-sensing apparatus comprises: (1) a display panel; (2) a glass plate; and (3) a frame assembly. In various embodiments, the frame assembly is configured to support the display panel and the plate. The frame assembly may include any suitable bracket or combination of brackets (e.g., or other suitable assembly mechanism) configured to maintain and mount each of the plate and display panel in a suitable position. In particular embodiments, the frame assembly is configured to support the plate adjacent the display panel such that the plate is positioned in front of the display panel. In particular embodiments, the glass plate is convex such that the plate curves at least partially outwardly from the frame assembly. The apparatus may further comprise a plurality of infrared sensors and emitters disposed in a bezel of the frame assembly and configured to detect touch inputs at the convex plate.