Patent ID: 11899437
Assignee: HITACHI HIGH-TECH CORPORATION
Field: Control (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A diagnosis system that diagnoses a state of a device for measuring or inspecting a sample, the diagnosis system comprising:
a computer system configured to estimate a cause for an error occurring in the device,
wherein the computer system includes a learning device configured to learn, by machine learning, a correspondence between at least one of a recipe that defines an operation of the device, log data that describes the state of the device, or sample data that describes characteristics of the sample and a type of the error, and
when the error occurs in the device after the learning device executes the machine learning, the computer system inputs at least one of the recipe used by the device when the error occurs, the log data when the error occurs, or the sample data when the error occurs to the learning device, so as to acquire an estimation result for at least one cause of the recipe, the state of the device, or the characteristics of the sample among the causes for the error as an output of the learning device and to output the estimation result,
wherein the device is configured to acquire an image of the sample,
the learning device learns, as the recipe, at least one of the number of inspection points on the sample, a coordinate of the inspection point on the sample, an image of the sample that is acquired in advance before the device inspects the sample, an inspection condition by the device, or an inspection sequence by the device,
the learning device learns, as the state of the device, at least one of a coordinate of an addressing pattern as a reference for specifying the inspection point, a duration of auto focus, a gain value and a bias value when auto brightness contrast control is executed, a shape and a size of a pattern formed on the sample, an output value of a sensor in the device, a voltage value and a current value to be supplied to a component in the device, or a control signal for a DA converter, and
the learning device learns, as a characteristic of the sample, at least one of a manufacturing condition of the sample, a type of an exposure device used for patterning a resist pattern for forming a pattern on the sample, an exposure condition of the exposure device, a material of the resist pattern, a thickness of the resist pattern, or a shape and a size of the resist pattern.