Electrostatic chucking device
Abstract
Abstract The present invention is to provide an electrostatic chucking device having improved heat conductivity and at the same time increased adsorption area and improved adsorptity as well as having no uneveness on the wafer-provided face. The electrostatic chucking device of the present invention comprises a metal base, an adhesive layer, an electrode layer comprising a metal-deposited or metal-plated layer, and an electrically insulating layer possessing a face for providing a substance to be adhered by suction, laminated thereon in this order. The electrostatic chucking device is produced by a process comprising a stage for forming a metal-deposited or metal-plated layer on one face of a heat resistant film, a stage for providing a photoresist layer on the surface of the electrode layer, carrying out pattern exposure, development, and an etching processing, a stage for forming a semi-cured adhesive layer on the surface of the etched electrode layer, a stage for punching the formed laminated sheet according to the shape of a metal base, and stage for laminating the metal base and the laminate sheet via the above-mentioned adhesive and curing the laminated product.
Inventors
- 👤 Tadao Matsunaga
- 👤 Takaya Matsushita
- 👤 Kei Hattori
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-21 | 2002-06-22 | 2002-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-21 | 2006-06-22 | 2006-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-21 | 2010-06-22 | 2010-12-22 | $7700.00 | Window Closed / Lapsed |