Patent ID: 11969767
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 10:
11. A wafer cleaning system, comprising:
a bearing platform, configured to bear a wafer; and
a wafer cleaning device;
wherein the wafer cleaning device comprises a liquid inlet pipe, a first liquid discharge pipe, a first valve and a liquid supply device; the liquid inlet pipe has an inlet terminal and an outlet terminal, the outlet terminal is arranged facing a wafer to be cleaned, a wall of the liquid inlet pipe is protruded outward to form a protrusion, the protrusion has a cavity in communication with an inside of the liquid inlet pipe, bubble thorns are arranged on an inner wall of the liquid inlet pipe, a shape of the bubble thorns is a cone, and bottom surfaces of the bubble thorns are arranged on the inner wall of the liquid inlet pipe; one terminal of the first liquid discharge pipe is in communication with the cavity and a second the other terminal of the first liquid discharge pipe is in communication with a container; the first valve is arranged on the liquid inlet pipe and located between the protrusion and the outlet terminal; the liquid supply device is in communication with the inlet terminal to import cleaning solution into the liquid inlet pipe; and
the outlet terminal is arranged facing the bearing platform.