Patent ID: 11908752
Assignee: SCREEN HOLDINGS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  B  G | IPC G  H

Claim 14:
15. A substrate processing method comprising, in the substrate processing apparatus including a substrate holder that holds a substrate and rotates said substrate;
a cup member that surrounds an outer circumference of said substrate holder;
an elevating mechanism that moves up said cup member so that an upper end portion of said cup member is located at an upper end position higher than said substrate held by said substrate holder;
a first nozzle that has a discharge port at a position lower than said upper end position and discharges first processing liquid from said discharge port to an end portion of said substrate;
a camera that images an imaging region that includes the first processing liquid discharged from said discharge port of said first nozzle and is viewed from an imaging position above said substrate:
a holding step of holding a substrate by said substrate holder;
a substrate rotation step of rotating said substrate holder that holds said substrate;
a bevel processing step of discharging said first processing liquid from said first nozzle to an end portion of said substrate; and
a bevel monitoring step of monitoring a discharge state of said first processing liquid based on a captured image acquired by said camera imaging said imaging region, wherein
in said bevel monitoring step, a machine-learned classifier classifies said captured image into either a category without abnormality regarding a liquid column width or a discharge position of processing liquid discharged from a tip of said first nozzle, or a category with abnormality.