Aligner
US6819406B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Jul 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/0082
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An aligner which enables a uniform close contact between a photo mask and a printed circuit board is provided. The aligner includes: a photo mask (20) provided with tapered portions (21); a mask holder (2) for supporting the photo mask (20) at the tapered portions; a copy frame (1) for supporting the mask holder (2); a load regulating system (3); and a Z-axis moving system (8) having supporting arms (80) on which the mask holder (2) is placed through the load regulating system (3); and a guide system (4) having a guide shaft (40), so that the photo mask (20) can be moved relative to a printed circuit board (B) while maintaining the position in X and Y directions by the guidance of the guide system (4). The photo mask (20) closely contacts with a printed circuit board (B) by a tare weight of the copy frame (1), mask holder (2), and the photo mask (20), and the contact pressure is regulated by the load regulating system (3). The copy frame (1) can be manipulated on a slant with respect to the guide shaft (40) of the guide system (4), whereby the contact uniformity between the photo mask (20) and printed circuit board (B) is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.