Heating device for heating semiconductor wafers in thermal processing chambers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F27B-005/14
F27B-005/00
출원번호
US-0903424
(2004-07-30)
발명자
/ 주소
Gat,Arnon
Bogart,Bob
출원인 / 주소
Mattson Technology, Inc.
대리인 / 주소
Dority &
인용정보
피인용 횟수 :
8인용 특허 :
188
초록▼
A novel apparatus for heat treating semiconductor wafers includes a heating device which comprises an assembly of light energy sources for emitting light energy onto a wafer. The light energy sources can be placed in various configurations. The tuning devices adjust the overall irradiance distributi
A novel apparatus for heat treating semiconductor wafers includes a heating device which comprises an assembly of light energy sources for emitting light energy onto a wafer. The light energy sources can be placed in various configurations. The tuning devices adjust the overall irradiance distribution of the light energy sources. The tuning devices can either be active sources of light energy or passive sources which reflect, refract, or absorb light energy. For instance, in one embodiment, the tuning devices can comprise a lamp spaced from a focusing lens designed to focus determined amounts of light energy onto a particular location of a wafer being heated.
대표청구항▼
What is claimed: 1. An apparatus for heat treating semiconductor wafers comprising: a thermal processing chamber adapted to contain a semiconductor wafer; a substrate holder positioned within the thermal processing chamber, the substrate holder being configured to hold the semiconductor wafer in th
What is claimed: 1. An apparatus for heat treating semiconductor wafers comprising: a thermal processing chamber adapted to contain a semiconductor wafer; a substrate holder positioned within the thermal processing chamber, the substrate holder being configured to hold the semiconductor wafer in the chamber; a first heating device in communication with the thermal processing chamber for heating a semiconductor wafer contained in the chamber; and a second heating device comprising at least one laser, the laser comprising a laser diode for emitting light energy onto the semiconductor wafer, wherein the laser diode is configured to move in relation to the semiconductor wafer. 2. An apparatus as defined in claim 1, wherein the second heating device comprises a plurality of laser diodes. 3. An apparatus as defined in claim 2, wherein at least one of the laser diodes is in communication with a focusing lens, the focusing lens being configured to focus light energy being emitted by the laser diode. 4. An apparatus as defined in claim 2, wherein at least one of the laser diodes is positioned to emit light energy onto the outer edges of the wafer. 5. An apparatus as defined in claim 1, further comprising: at least one temperature sensing device for sensing the temperature of the semiconductor wafer; and a controller in communication with the at least one temperature sensing device and the first heating device, the controller being configured to control the amount of energy being emitted by the first heating device in response to temperature information received from the at least one temperature sensing device. 6. An apparatus as defined in claim 1, wherein the substrate holder is configured to rotate the wafer. 7. An apparatus as defined in claim 5, wherein the controller is also configured to control the second heating device independently of the first heating device. 8. An apparatus as defined in claim 2, wherein the plurality of laser diodes are movable in relation to the wafer in order to change and adjust the location of where the light energy being emitted by the laser diodes contacts the wafer. 9. An apparatus as defined in claim 1, wherein the apparatus further comprises a controller that is configured to control the second heating device for varying the amount of energy that is applied to the semiconductor wafer at different locations. 10. An apparatus as defined in claim 1, wherein the apparatus includes a controller that is configured to move the second heating device in order to change and adjust the location of where the light energy being emitted by the second heating device contacts the semiconductor wafer. 11. An apparatus as defined in claim 1, wherein the laser diode emits a localized and focused source of light energy that is directed onto a particular location of the semiconductor wafer. 12. An apparatus as defined in claim 1, wherein the first heating device comprises a plurality of light energy sources that are configured to form an irradiance distribution across a surface of the semiconductor wafer. 13. An apparatus as defined in claim 1, wherein the at least one laser is mounted to a movable support structure. 14. An apparatus for heating semiconductor wafers comprising: a thermal processing chamber adapted to contain a semiconductor wafer; a substrate holder positioned within the thermal processing chamber, the substrate holder being configured to hold the semiconductor wafer in the chamber; a first heating device in communication with the thermal processing chamber for heating a semiconductor wafer contained in the chamber; and a second heating device comprising at least one laser diode for emitting light energy onto the semiconductor wafer, the laser diode being configured to emit a localized and focused source of light energy onto a particular location of the wafer while the first heating device is heating the wafer, wherein the laser diode is configured to move in relation to the semiconductor wafer. 15. An apparatus as defined in claim 14, wherein the second heating device comprises a plurality of laser diodes. 16. An apparatus as defined in claim 14, further comprising: at least one temperature sensing device for sensing the temperature of the semiconductor wafer; and a controller in communication with the at least one temperature sensing device and the first heating device, the controller being configured to control the amount of energy being emitted by the first heating device in response to temperature information received from the at least one temperature sensing device. 17. An apparatus as defined in claim 14, wherein the substrate holder is configured to rotate the wafer. 18. An apparatus as defined in claim 16, wherein the controller is also configured to control the second heating device independently of the first heating device. 19. An apparatus as defined in claim 14, wherein the plurality of laser diodes are movable in relation to the wafer in order to change and adjust the location of where the light energy being emitted by the laser diodes contacts the wafer. 20. An apparatus as defined in claim 14, wherein the apparatus further comprises a controller that is configured to control the second heating device for varying the amount of energy that is applied to the semiconductor wafer at different locations. 21. An apparatus as defined in claim 14, wherein the apparatus includes a controller that is configured to move the second heating device in order to change and adjust the location of where the light energy being emitted by the second heating device contacts the semiconductor wafer. 22. An apparatus as defined in claim 14, wherein the laser diode emits a localized and focused source of light energy that is directed onto a particular location of the semiconductor wafer. 23. An apparatus for heating semiconductor wafers comprising: a thermal processing chamber adapted to contain a semiconductor wafer; a substrate holder positioned within the thermal processing chamber, the substrate holder being configured to hold the semiconductor wafer in the chamber; a first heating device in communication with the thermal processing chamber for heating a semiconductor wafer contained in the chamber; and a second heating device comprising at least one laser diode for emitting light energy onto the semiconductor wafer, the laser diode being configured to emit a localized and focused source of light energy while the first heating device is heating the wafer, wherein the at least one laser is mounted to a movable support structure. 24. An apparatus as defined in claim 14, wherein the laser diode is positioned over the semiconductor wafer.
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