Light source appasratus and backlight module

A light source apparatus, comprising:

• a cathode structure with a light transmission property;
• an anode structure with a light transmission reflectivity, located opposite to the cathode structure;
• a discharge layer, located on at least one of the cathode structure and the 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, and functioning to induce the cathode to uniformly emit electrons,
• wherein the low-pressure gas layer comprises a large electron mean free path allowing electrons to directly hit the fluorescent layer under an operating voltage, so as to generate desired lights.

A backlight source apparatus, comprising:

• at least one power controller, for providing at least one operating voltage;
• a light emitting unit, comprising at least one light emitting panel controlled by an operating voltage, wherein the light emitting panel comprises:
• a cathode structure;
• a anode structure, located opposite to the cathode 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, and functioning to induce the cathode to uniformly emit electrons,
• wherein the low-pressure gas layer comprises a large electron mean free path allowing electrons to directly hit the fluorescent layer under an operating voltage.