Invention Grant
- Patent Title: Semiconductor structure and method of manufacture
-
Application No.: US16888177Application Date: 2020-05-29
-
Publication No.: US11443991B2Publication Date: 2022-09-13
- Inventor: Yao-Te Huang , Liang-Chor Chung
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsinchu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: Slater Matsil, LLP
- Main IPC: H01L21/66
- IPC: H01L21/66 ; H01L21/768

Abstract:
Test pad structures and methods of forming a test pad are described herein. A method for forming a test pad includes forming a device element over a substrate, depositing a dielectric layer over the device element and the substrate, and etching openings in the dielectric layer to a first depth. Once the openings have been formed, a conductive material is deposited in the openings and followed by a chemical mechanical planarization to form a first grid feature and a panel region of the test pad, the first grid feature extending lengthwise from the panel region to a perimeter of the test pad. Once formed, a probe may be used to contact the panel region of the test pad during a wafer acceptance test (WAT) and/or a process control monitoring (PCM) test of the device element.
Public/Granted literature
- US20210375703A1 Semiconductor Structure and Method of Manufacture Public/Granted day:2021-12-02
Information query
IPC分类: