Patent ID: 7923915

Claim:
A display pixel structure, comprising: a first substrate; a plurality of cathode structure layers, disposed on the first substrate; a second substrate, made of a light-transmissive material; a plurality of anode structure layers, disposed on the second substrate, wherein the anode structure layers are made of a light-transmissive conductive material, and the first substrate faces to the second substrate, such that the cathode structure layers are respectively aligned with the anode structure layers; a separation structure, disposed between the first substrate and the second substrate, for respectively partitioning the anode structure layers and the cathode structure layers to form a plurality of spaces; a plurality of fluorescent layers, respectively disposed between the anode structure layers and the cathode structure layers to form a plurality of pixels; and a low-pressure gas, filled in the spaces, wherein a gas pressure of the low-pressure gas is between 8×10 −1 torr and 10 −3 torr. wherein the low-pressure gas layer comprises an electron mean free path, allowing at least sufficient amount of electrons to directly impinge the fluorescent layers under an operation voltage, wherein the electron mean free path is at least 5 mm.