Sensing unit for a position detecting apparatus and its manufacturing method
US5444190A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1992 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jun 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a sensing unit for a position detecting apparatus permitting freer setting of a reading efficiency and having a thinner appearance and its manufacturing method for realizing simple manufacturing, high yield, and low cost. According to the present invention, two plies of conductor patterns 22 and 23 are produced on one side 21a of an insulating substrate 21 to form a plurality of sense wires, a shielding plate 28 is adhered to other side of the insulating substrate 21, then the insulating substrate 21 is died together with the shielding plate 28. This obviates through holes for which drilling the insulating substrate is required, and diminishes the difference between the distances of the two plies of conductor patterns 22 and 23 from a position indicator. Furthermore, a spacer for separating conductor patterns from a shield becomes unnecessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.