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公开(公告)号：US20230142835A1
公开(公告)日：2023-05-11
申请号：US18095114
申请日：2023-01-10
IPC分类号： G03F7/20 , G06T7/00 , H04N23/695
CPC分类号： G03F7/70591 , G03F7/70033 , G06T7/001 , H04N23/695 , G06T2207/20224 , H04N23/555
摘要： A method for inspecting an extreme ultraviolet (EUV) light source includes: removing a collector mirror of the EUV light source from a collector chamber; installing an inspection apparatus within the collector chamber, the apparatus including a selectively extendable and retractable member and a camera at one end of the member; operating a first actuator to extend the member along a path through the interior chamber of the EUV light source, thereby moving the camera to a given position within the interior chamber of the EUV light source; operating a second actuator to pan the camera about an axis of rotation, thereby establishing a given camera orientation within the interior of the EUV light source; and, capturing an image of the interior chamber of the EUV light source with the camera while the camera is at the given position and orientation established by the operation of the first and second actuators.
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公开(公告)号：US11533799B1
公开(公告)日：2022-12-20
申请号：US17372294
申请日：2021-07-09
发明人： Hsin-Feng Chen , Ming-Hsun Tsai , Li-Jui Chen , Shang-Chieh Chien , Heng-Hsin Liu , Cheng-Hao Lai , Yu-Huan Chen , Wei-Shin Cheng , Yu-Kuang Sun , Cheng-Hsuan Wu , Yu-Fa Lo , Chiao-Hua Cheng
摘要： A system and a method for supplying target material in an EUV light source are provided. The system for supplying a target material comprises a priming assembly, a refill assembly and a droplet generator assembly. The priming is configured to transform the target material from a solid state to a liquid state. The refill assembly is in fluid communication with the priming assembly and configured to receive the target material in the liquid state from the priming assembly. Further, the refill assembly includes a purifier configured to purify the target material in the liquid state. The droplet generator assembly is configured to supply the target material in the liquid state from the refill assembly.
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公开(公告)号：US11567415B2
公开(公告)日：2023-01-31
申请号：US17382955
申请日：2021-07-22
摘要： A method for inspecting an extreme ultraviolet (EUV) light source includes: removing a collector mirror of the EUV light source from a collector chamber; installing an inspection apparatus within the collector chamber, the apparatus including a selectively extendable and retractable member and a camera at one end of the member; operating a first actuator to extend the member along a path through the interior chamber of the EUV light source, thereby moving the camera to a given position within the interior chamber of the EUV light source; operating a second actuator to pan the camera about an axis of rotation, thereby establishing a given camera orientation within the interior of the EUV light source; and, capturing an image of the interior chamber of the EUV light source with the camera while the camera is at the given position and orientation established by the operation of the first and second actuators.
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公开(公告)号：US11553581B2
公开(公告)日：2023-01-10
申请号：US17369740
申请日：2021-07-07
发明人： Chiao-Hua Cheng , Hsin-Feng Chen , Yu-Fa Lo , Yu-Kuang Sun , Wei-Shin Cheng , Yu-Huan Chen , Ming-Hsun Tsai , Cheng-Hao Lai , Cheng-Hsuan Wu , Shang-Chieh Chien , Heng-Hsin Liu , Li-Jui Chen , Sheng-Kang Yu
摘要： A method for using an extreme ultraviolet radiation source is provided. The method includes assembling a first droplet generator onto a port of a vessel; ejecting a target droplet from the first droplet generator to a zone of excitation in front of a collector; emitting a laser toward the zone of excitation, such that the target droplet is heated by the laser to generate extreme ultraviolet (EUV) radiation; stopping the ejection of the target droplet; after stopping the ejection of the target droplet, disassembling the first droplet generator from the port of the vessel; after disassembling the first droplet generator from the port of the vessel, inserting a cleaning device into the vessel through the port; and cleaning the collector by using the cleaning device.
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公开(公告)号：US12066761B2
公开(公告)日：2024-08-20
申请号：US17461491
申请日：2021-08-30
发明人： Chiao-Hua Cheng , Sheng-Kang Yu , Shang-Chieh Chien , Wei-Chun Yen , Heng-Hsin Liu , Ming-Hsun Tsai , Yu-Fa Lo , Li-Jui Chen , Wei-Shin Cheng , Cheng-Hsuan Wu , Cheng-Hao Lai , Yu-Kuang Sun , Yu-Huan Chen
IPC分类号： G03F7/00
CPC分类号： G03F7/70483 , G03F7/70033 , G03F7/7085
摘要： In a method of inspecting an extreme ultraviolet (EUV) radiation source, during an idle mode, a borescope mounted on a fixture is inserted through a first opening into a chamber of the EUV radiation source. The borescope includes a connection cable attached at a first end to a camera. The fixture includes an extendible section mounted from a first side on a lead screw, and the camera of the borescope is mounted on a second side, opposite to the first side, of the extendible section. The extendible section is extended to move the camera inside the chamber of the EUV radiation source. One or more images are acquired by the camera from inside the chamber of the EUV radiation source at one or more viewing positions. The one or more acquired images are analyzed to determine an amount of tin debris deposited inside the chamber of the EUV radiation source.
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公开(公告)号：US20220326624A1
公开(公告)日：2022-10-13
申请号：US17382955
申请日：2021-07-22
摘要： A method for inspecting an extreme ultraviolet (EUV) light source includes: removing a collector mirror of the EUV light source from a collector chamber; installing an inspection apparatus within the collector chamber, the apparatus including a selectively extendable and retractable member and a camera at one end of the member; operating a first actuator to extend the member along a path through the interior chamber of the EUV light source, thereby moving the camera to a given position within the interior chamber of the EUV light source; operating a second actuator to pan the camera about an axis of rotation, thereby establishing a given camera orientation within the interior of the EUV light source; and, capturing an image of the interior chamber of the EUV light source with the camera while the camera is at the given position and orientation established by the operation of the first and second actuators.
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公开(公告)号：US12096543B2
公开(公告)日：2024-09-17
申请号：US18151930
申请日：2023-01-09
发明人： Chiao-Hua Cheng , Hsin-Feng Chen , Yu-Fa Lo , Yu-Kuang Sun , Wei-Shin Cheng , Yu-Huan Chen , Ming-Hsun Tsai , Cheng-Hao Lai , Cheng-Hsuan Wu , Shang-Chieh Chien , Heng-Hsin Liu , Li-Jui Chen , Sheng-Kang Yu
CPC分类号： H05G2/006 , G03F7/70033 , G03F7/7055 , H05G2/008
摘要： A method for using an extreme ultraviolet radiation source is provided. The method includes performing a lithography process using an extreme ultraviolet (EUV) radiation source; after the lithography processes, inserting an extraction tube into a vessel of the EUV radiation source; and cleaning a collector of the EUV radiation source by using the extraction tube.
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公开(公告)号：US11537053B2
公开(公告)日：2022-12-27
申请号：US17450100
申请日：2021-10-06
发明人： Chiao-Hua Cheng , Yu-Kuang Sun , Wei-Shin Cheng , Yu-Huan Chen , Ming-Hsun Tsai , Cheng-Hao Lai , Cheng-Hsuan Wu , Yu-Fa Lo , Shang-Chieh Chien , Heng-Hsin Liu , Li-Jui Chen , Sheng-Kang Yu
摘要： Some implementations herein include a detection circuit and a fast and accurate in-line method for detecting blockage on a droplet generator head of an extreme ultraviolet exposure tool without impacting the flow of droplets of a target material through the droplet generator head. In some implementations described herein, the detection circuit includes a switch circuit that is configured in an open configuration, in which the switch is electrically open between two electrode elements. When an accumulation of the target material occurs across two or more electrode elements on the droplet generator head, the accumulation functions as a switch that closes the detection circuit. A controller may detect closure of the detection circuit.
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