Invention Grant
- Patent Title: Apparatus and method for controlling wafer uniformity
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Application No.: US15904053Application Date: 2018-02-23
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Publication No.: US11062886B2Publication Date: 2021-07-13
- Inventor: Hsiao-Hua Peng , Hann-Ru Chen
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsinchu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: Duane Morris LLP
- Main IPC: H01J37/32
- IPC: H01J37/32 ; H01L21/66 ; H01L21/67 ; C23C16/46

Abstract:
An apparatus for controlling wafer uniformity is disclosed. In one example, the apparatus includes: a plurality of temperature control elements and a processor. Each of the temperature control elements corresponds to a different portion of a wafer respectively such that the temperature control elements correspond to different portions of the wafer. Each of the temperature control elements is configured to individually control temperature of a corresponding portion of the wafer. The processor determines at least one portion of the wafer for temperature uniformity control, and instruct at least one of the temperature control elements, corresponding to the at least one portion, to adjust temperature of the at least one portion for controlling temperature uniformity of the wafer.
Public/Granted literature
- US20190164730A1 APPARATUS AND METHOD FOR CONTROLLING WAFER UNIFORMITY Public/Granted day:2019-05-30
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