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

Claim 0:
1. A device for testing flatness, comprising:
a base;
a testing platform assembled on the base, wherein the testing platform comprises a supporting structure, the supporting structure is disposed on a side of the testing platform away from the base, and is used to support the to-be-tested board, and the supporting structure matches with a structure of the to-be-tested board;
a ranging sensor disposed on a side of the testing platform away from the base, wherein after the to-be-tested board is placed on the testing platform, the ranging sensor is used to test distances between a number N of to-be-tested positions on the to-be-tested board and the ranging sensor, to obtain N pieces of distance information, and the N pieces of distance information are used to determine the flatness of the to-be-tested board, where N is an integer greater than 2.