System for inspecting defects of panel device

A system for inspecting defects of a panel device, comprising:

• a to-be-inspected device;
• a power unit;
• and
• a light source apparatus, holding the to-be-inspected device, wherein a light emitting flat plane of the light source apparatus is directly contacting with the to-be-inspected device, wherein the to-be-inspected device, the power unit, and the light source apparatus are formed as an integrated module, wherein the light source apparatus is controlled by the power unit to provide an inspection light to the to-be-inspected device for inspecting whether or not having defects, wherein the light source apparatus comprises:
• a cathode structure;
• an anode structure;
• a fluorescent layer, located between the cathode structure and the anode structure;
• and
• a low-pressure gas layer, filled between the cathode structure and the anode structure, for inducing a cathode to emit electrons uniformly, wherein the low-pressure gas layer comprises an electron mean free path, allowing electrons to directly hit the fluorescent layer under an operating voltage.