Patent ID: 11948845
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 16:
17. The system for testing flatness according to claim 16, wherein the device for testing flatness further comprises a first lifting apparatus disposed below the base;
before the platform transmission mechanism transports the testing platform assembled on the base to the second storage space, the first lifting apparatus is used to drive the base to move in a third direction, so that the plurality of first rollers are disposed below the testing platform assembled on the base and in contact with the testing platform assembled on the base, and the plurality of second rollers are disposed below the testing platform assembled on the base and in contact with the testing platform assembled on the base;
before the platform transmission mechanism transports the standby testing platform stored in the first storage space to the base, the first lifting apparatus is used to drive the base to move in the third direction until the platform transmission mechanism transports the standby testing platform stored in the first storage space to the base;
when the platform transmission mechanism is not working, the first lifting apparatus is used to drive the base to move in the third direction, so that the plurality of first rollers are disposed below the testing platform assembled on the base, and out of contact with the testing platform assembled on the base, and the plurality of second rollers are disposed below the testing platform assembled on the base, and out of contact with the testing platform assembled on the base.