Patent ID: 9656292
Date: 2017-05-23
CPC Classifications: B05D,C23C,G02F

Claim:
1. A coating method, which comprises a step of coating a substrate to be coated which is placed on a stage in a coating chamber, using a coating device for coating the substrate to be coated, which comprises the coating chamber, and the stage for carrying the substrate to be coated is provided at the bottom of the coating chamber, wherein the coating device further comprises a measuring mechanism comprising a measuring unit and a processing unit, the measuring unit is communicated with the coating chamber for collecting a thickness data of a film coated on the inner walls of the coating chamber and transmitting the thickness data to the processing unit, and the processing unit is used to process the thickness data to obtain a thickness of the film coated on the inner walls of the coating chamber, and wherein the thickness data is reflection spectrum, wherein the inner walls of the coating chamber surrounding the stage are provided with a blocking plate, the blocking plate surrounding the stage in an annular shape, a sampling block is placed on an upper surface of the blocking plate, the measuring unit comprises a light source, a spectroscopic element and a light-collecting module, and wherein the spectroscopic element is disposed to be opposite to the sampling block, the light emitted from the light source irradiates onto the sampling block through the spectroscopic element; the spectroscopic element is configured to perform spectroscopy on the light reflected from the sampling block to acquire a reflection spectrum; the light-collecting module is configured to collect the reflection spectrum and convert the reflection spectrum into an analog electric signal, and the processing unit is configured to process the analog electric signal to obtain the thickness of the film; wherein the method further comprises steps of: collecting a thickness data of a film coated on inner walls of the coating chamber; and processing the thickness data to obtain a thickness of the film coated on the inner walls of the coating chamber.