Patent ID: 11933808
Assignee: SEMES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. A buffer unit for temporarily storing a substrate, the buffer unit comprising:
a housing having a space for s a substrate therein;
one or more slots disposed within the housing for placing the substrate thereon; and
a holding unit disposed at a bottom portion of the housing, having a flat and non-inclined top surface, and comprising a built-in wireless charging module,
wherein a substrate type sensor is supported by the flat and non-inclined top surface of the holding unit,
wherein the substrate type sensor comprises:
a substrate shaped-member;
a level measuring member provided at the substrate shaped-member;
a communication unit configured to receive a data from the level measuring member; and
a power unit configured to provide a power to the level measuring member and the communication unit, and

wherein the power unit is charged by the built-in wireless charging module.