GB2146566A - Electrostatic bonding - Google Patents
Electrostatic bonding Download PDFInfo
- Publication number
- GB2146566A GB2146566A GB08324893A GB8324893A GB2146566A GB 2146566 A GB2146566 A GB 2146566A GB 08324893 A GB08324893 A GB 08324893A GB 8324893 A GB8324893 A GB 8324893A GB 2146566 A GB2146566 A GB 2146566A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- bonding
- substrate
- silicon
- transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C3/00—Assembling of devices or systems from individually processed components
- B81C3/001—Bonding of two components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C2203/00—Forming microstructural systems
- B81C2203/03—Bonding two components
- B81C2203/038—Bonding techniques not provided for in B81C2203/031 - B81C2203/037
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
A silicon body, e.g. a transducer 11 is provided with a surface coating 12 of a glass. The glass is ground and polished to a thickness of 5 to 100 microns and the assembly is then electrostatically bonded to a silicon substrate 13. <IMAGE>
Description
SPECIFICATION
Electrostatic bonding
This invention relates to electrostatic bonding processes, and in particular to a process for bond ing a silicon body to a substrate.
Silicon transducers such as those described in our published specifications No. 2115551 (J.C.
Greenwood 44) and No. 2095911 (J.C. Greenwood 40) are finding increasing use in a variety of applications. For many of these applications it is necessary to mount the transducer in a housing and this in turn entails bonding the transducer to a substrate. Conventionally this is done with an adhesive such as an epoxy resin but problems have been encountered in the form of thermal mismatch between the adhesive and the transducer.
According to the invention there is provided a process for bonding a silicon body to a silicon substrate, the method including applying a glass to at least a portion of the body, grinding and polishing the glass to a thickness between 5 and 100 microns and electrostatically bonding the glass coated body to the substrate.
As the bond is effectively silicon to silicon the problem of thermal mismatch is overcome.
Embodiments of the invention will now be described with reference to the accompanying drawings in which the single figure is a cross sectional view of a transducer prior to bonding to a substrate.
Referring to the drawing, a silicon transducer 11 is coated on a surface with a layer 12 of a glass composition, typically a borosilicate glass. This glass layer is ground and polished and the assembly is then placed in contact with a silicon substrate 13.
The transducer and substrate are heated to a temperature below the softening point of the glass.
For a borosilicate glass a temperature of 400 to 5000C is suitable. An electric potential of 800 to 1200 volts is applied between the transducer and substrate, the substrate being negative, relative to the transducer. After a short time a permanent electrostatic bond is effected.
The glass may be applied to the transducer either by electrostatic bonding or by firing of a glass frit. Where electrostatic bonding is used the glass is ground and polished to a thickness of 5 to 100 microns prior to bonding to the substrate. If however the glass is applied as a glaze it is ground and polished to a thickness not less than 5 microns, typically 10 to 15 microns before bonding to the substrate is effected.
1. A process for bonding a silicon body to a silicon substrate, the method including applying a glass to at least a portion of the body, grinding and polishing the glass to a thickness between 5 and 100 microns and electrostatically bonding the glass coated body to the substrate.
2. A process as claimed in claim 1, wherein the glass is electrostatically bonded to the silicon body.
3. A process as claimed in claim 2, wherein the glass is ground and polished to a thickness of 10 to 15 microns prior to bonding to the substrate.
4. A process as claimed in any one of claims 1 to 3, wherein the glass is a borosilicate glass.
5. A process as claimed in claim 4, wherein the glass is heated to a temperature of 400 to 500'C during the bonding process.
6. A process as claimed in any one of claims 1 to 5, wherein a potential of 800 to 1200 volts is applied across the glass layer to effect bonding, the substrate being negative relative to the silicon body.
7. A process for bonding a silicon body to a silicon substrate substantially as described herein with reference to the accompanying drawings.
8. A transducer assembly prepared by a process as claimed in any one of claims 1 to 7.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (8)
1. A process for bonding a silicon body to a silicon substrate, the method including applying a glass to at least a portion of the body, grinding and polishing the glass to a thickness between 5 and 100 microns and electrostatically bonding the glass coated body to the substrate.
2. A process as claimed in claim 1, wherein the glass is electrostatically bonded to the silicon body.
3. A process as claimed in claim 2, wherein the glass is ground and polished to a thickness of 10 to 15 microns prior to bonding to the substrate.
4. A process as claimed in any one of claims 1 to 3, wherein the glass is a borosilicate glass.
5. A process as claimed in claim 4, wherein the glass is heated to a temperature of 400 to 500'C during the bonding process.
6. A process as claimed in any one of claims 1 to 5, wherein a potential of 800 to 1200 volts is applied across the glass layer to effect bonding, the substrate being negative relative to the silicon body.
7. A process for bonding a silicon body to a silicon substrate substantially as described herein with reference to the accompanying drawings.
8. A transducer assembly prepared by a process as claimed in any one of claims 1 to 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08324893A GB2146566B (en) | 1983-09-16 | 1983-09-16 | Electrostatic bonding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08324893A GB2146566B (en) | 1983-09-16 | 1983-09-16 | Electrostatic bonding |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8324893D0 GB8324893D0 (en) | 1983-10-19 |
GB2146566A true GB2146566A (en) | 1985-04-24 |
GB2146566B GB2146566B (en) | 1986-11-26 |
Family
ID=10548906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08324893A Expired GB2146566B (en) | 1983-09-16 | 1983-09-16 | Electrostatic bonding |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2146566B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5009690A (en) * | 1990-03-09 | 1991-04-23 | The United States Of America As Represented By The United States Department Of Energy | Method of bonding single crystal quartz by field-assisted bonding |
DE4243612A1 (en) * | 1991-12-25 | 1993-07-01 | Rohm Co Ltd | Anodic bonding of two substrates - comprises forming electroconductive film on one substrate and glass film on other substrate, joining and applying voltage |
EP0594182A2 (en) * | 1992-10-22 | 1994-04-27 | Canon Kabushiki Kaisha | Anode bonding method and acceleration sensor obtained by using the anode bonding method |
EP0580283A3 (en) * | 1992-06-05 | 1995-08-23 | Seiko Epson Corp | Ink jet head and method of manufacturing thereof |
US5912684A (en) * | 1990-09-21 | 1999-06-15 | Seiko Epson Corporation | Inkjet recording apparatus |
US6113218A (en) * | 1990-09-21 | 2000-09-05 | Seiko Epson Corporation | Ink-jet recording apparatus and method for producing the head thereof |
US6164759A (en) * | 1990-09-21 | 2000-12-26 | Seiko Epson Corporation | Method for producing an electrostatic actuator and an inkjet head using it |
US6168263B1 (en) | 1990-09-21 | 2001-01-02 | Seiko Epson Corporation | Ink jet recording apparatus |
WO2003029159A1 (en) * | 2001-10-03 | 2003-04-10 | Qinetiq Limited | Coated optical components |
CN108328912A (en) * | 2018-04-08 | 2018-07-27 | 武汉理工大学 | A kind of anode linkage method and device for vacuum glass sealing-in |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1180908A (en) * | 1966-11-17 | 1970-02-11 | English Electric Co Ltd | Improvements in or relating to processes for Forming an Insulating Coating on Silicon, and to Coated Silicon |
GB1189601A (en) * | 1967-01-12 | 1970-04-29 | Siemens Ag | A Method of Affixing a Strain Gauge to a Specimen Which is to be Tested. |
GB1267465A (en) * | 1969-10-28 | 1972-03-22 | Itt | Transducer assembly and method of making the same |
GB1512486A (en) * | 1975-05-14 | 1978-06-01 | Itt | Method of making a transducer |
-
1983
- 1983-09-16 GB GB08324893A patent/GB2146566B/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1180908A (en) * | 1966-11-17 | 1970-02-11 | English Electric Co Ltd | Improvements in or relating to processes for Forming an Insulating Coating on Silicon, and to Coated Silicon |
GB1189601A (en) * | 1967-01-12 | 1970-04-29 | Siemens Ag | A Method of Affixing a Strain Gauge to a Specimen Which is to be Tested. |
GB1267465A (en) * | 1969-10-28 | 1972-03-22 | Itt | Transducer assembly and method of making the same |
GB1512486A (en) * | 1975-05-14 | 1978-06-01 | Itt | Method of making a transducer |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5009690A (en) * | 1990-03-09 | 1991-04-23 | The United States Of America As Represented By The United States Department Of Energy | Method of bonding single crystal quartz by field-assisted bonding |
US6164759A (en) * | 1990-09-21 | 2000-12-26 | Seiko Epson Corporation | Method for producing an electrostatic actuator and an inkjet head using it |
US5912684A (en) * | 1990-09-21 | 1999-06-15 | Seiko Epson Corporation | Inkjet recording apparatus |
US6113218A (en) * | 1990-09-21 | 2000-09-05 | Seiko Epson Corporation | Ink-jet recording apparatus and method for producing the head thereof |
US6117698A (en) * | 1990-09-21 | 2000-09-12 | Seiko Epson Corporation | Method for producing the head of an ink-jet recording apparatus |
US6168263B1 (en) | 1990-09-21 | 2001-01-02 | Seiko Epson Corporation | Ink jet recording apparatus |
DE4243612A1 (en) * | 1991-12-25 | 1993-07-01 | Rohm Co Ltd | Anodic bonding of two substrates - comprises forming electroconductive film on one substrate and glass film on other substrate, joining and applying voltage |
EP0580283A3 (en) * | 1992-06-05 | 1995-08-23 | Seiko Epson Corp | Ink jet head and method of manufacturing thereof |
EP0594182A2 (en) * | 1992-10-22 | 1994-04-27 | Canon Kabushiki Kaisha | Anode bonding method and acceleration sensor obtained by using the anode bonding method |
EP0594182A3 (en) * | 1992-10-22 | 1997-09-24 | Canon Kk | Anode bonding method and acceleration sensor obtained by using the anode bonding method |
US5673476A (en) * | 1992-10-22 | 1997-10-07 | Canon Kabushiki Kaisha | Anode bonding method for selected regions |
WO2003029159A1 (en) * | 2001-10-03 | 2003-04-10 | Qinetiq Limited | Coated optical components |
CN108328912A (en) * | 2018-04-08 | 2018-07-27 | 武汉理工大学 | A kind of anode linkage method and device for vacuum glass sealing-in |
CN108328912B (en) * | 2018-04-08 | 2020-01-31 | 武汉理工大学 | anodic bonding method and device for vacuum glass sealing |
Also Published As
Publication number | Publication date |
---|---|
GB8324893D0 (en) | 1983-10-19 |
GB2146566B (en) | 1986-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |