| 摘要 |
The device has a tactile crystal (10) made of a transparent material such as sapphire, resistant to temperatures higher than 5000 Centigrade. The crystal has electrodes on an inner face (11) of the crystal connected by conductive paths (16) to contact zones (17) located in a connection area close to an edge (12) of crystal opposite ends of connectors (19). An enamel layer (20) is formed in the crystal, and conceals the electrode connection area. A hollow is made close to the edge of the crystal by a diamond grinding-wheel over a depth comprised between 0.1 millimeters and 0.5 millimeters. An independent claim is also included for a method of manufacturing a tactile crystal of a transparent material. |
