Patent ID: 6662142
Filing Date: 2003-12-09
Classification: H01L,Y02P

Abstract:
A system for providing information on quality and reliability related to an optical semiconductor device, comprising:a first information communication terminal for outputting, on a maker-side for producing the device, information on a characteristic of the device measured in a production step; a second information communication terminal for outputting, as information on a user-side for using the device, information on the characteristic of the device measured in an inspection step at a time of delivering a product incorporating the device; a communication network for transmitting the information outputted from the first and second information communication terminals; and an information processing apparatus connected to the first and second information communication terminals through the communication network, wherein the information processing apparatus computes a rate of change in the characteristic of the device from a time beginning with the measuring of the characteristic in the production step on the maker side on the basis of the information outputted from the first information communication terminal to a time ending with the measuring of the characteristic in the inspection step on the user side on the basis of the information outputted from the second information communication terminal, and wherein the information processing apparatus outputs a signal representing an abnormality to at least one of the first and second information communication terminals through the communication network when the computed rate of change is outside of a predetermined numerical range.