Provided are a light source circuit unit that improves light extraction efficiency, as well as an illuminator and a display that include such a light source circuit unit. The successive approximation analog to digital converter includes a sample circuit, a conversion circuit, and a filtering control circuit. The glass strands obtained are capable of being used to reinforce organic or inorganic materials. If the in-focus position is nearer than the parameter \u201cB\u201d, the imaging sensitivity is set to a low level. The client device may use the reference frame to at least reduce an effect of the overlapping. The flange portion is formed thinner than a thickness of the main body portion.