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

Claim 0:
1. A wafer cleaning device, comprising:
a liquid inlet pipe having an inlet terminal and an outlet terminal, the outlet terminal being arranged facing a wafer to be cleaned, a wall of the liquid inlet pipe being protruded outward to form a protrusion, the protrusion having a cavity in communication with an inside of the liquid inlet pipe, bubble thorns being arranged on an inner wall of the liquid inlet pipe, a shape of the bubble thorns being a cone, and bottom surfaces of the bubble thorns being arranged on the inner wall of the liquid inlet pipe;
a first liquid discharge pipe, one terminal of the first liquid discharge pipe being in communication with the cavity and a second terminal of the first liquid discharge pipe being in communication with a container;
a first valve, arranged on the liquid inlet pipe and located between the protrusion and the outlet terminal; and
a liquid supply device, in communication with the inlet terminal to import cleaning solution into the liquid inlet pipe.