FIELD EMISSION FLAT LAMP AND CATHODE PLATE THEREOF

Abstract

A cathode plate including a substrate, a cathode structure, a gate structure and emission sources is provided. The cathode structure and the gate structure are disposed on the substrate. The emission sources are arranged regularly on the cathode structure. A field emission flat lamp including said cathode plate, an anode plate and a sealant is provided. The sealant is disposed between and seals the cathode plate and the anode plate. Since the volume of each emission source is small, the bubbles resided inside the emission sources can be reduced, such that the qualities of the field emission flat lamp and the cathode plate thereof can be improved.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top view of a cathode plate of a well-known field emission flat lamp.

FIG. 2 is a cross-sectional view of a field emission flat lamp of an embodiment of the present invention.

FIG. 3 is a top view of the cathode plate in FIG. 2.

FIG. 4 is a top view of the cathode plate of another embodiment of the present invention.

FIG. 5 is a cross-sectional view of the field emission flat lamp of another embodiment of the present invention.

FIG. 6 is a local enlargement view of area S10 in FIG. 5.

FIG. 7 and FIG. 8 are top views of the cathode plate of two other embodiments of the present invention.

Claims

1. A cathode plate includes: a cathode structure, disposed on a substrate, the cathode structure is in strip structure without branch and has a pluralty of emission sources arranged regularly and separately thereon or therewithin: anda gate structure, disposed on the substrate adjacent to and formed in the same plane as the cathode structure, the gate structure is in strip structure.

2. The cathode plate as claimed in claim 1, wherein the cathode structure has a plurality of grooves, and the emission sources are disposed in the grooves.

3. The cathode plate as claimed in claim 2, wherein the grooves expose the substrate, and the emission sources are in touch with the substrate.

4. The cathode plate as claimed in claim 1 includes a plurality of cathode structures and a plurality of gate structures, wherein, the cathode structures are in strip structure and arranged in parallel with each other; the gate structures are in strip structure and arranged interlacedly in parallel with the cathode structures.

5. The cathode plate as claimed in claim 4, wherein, the grooves are arranged in rows along with the extension direction of the cathode structures.

6. The cathode plate as claimed in claim 5, wherein, the grooves on adjacent cathode structures are arranged justified.

7. The cathode plate as claimed in claim 5, wherein, the grooves on adjacent cathode structures are arranged crisscrossed each other.

8. A field emission flat lamp includes: a cathode plate includes: a first substrate;a cathode structure, disposed on the first substrate, the cathode structure is in strip structure without branch and has a plurality of emission sources arranged regularly and separately thereon or therewithin:a gate structure, disposed on the first substrate and located beside the cathode structure;an anode plate, disposed above the cathode plate; anda sealant, disposed and seals between the cathode plate and the anode plate.

9. The field emission flat lamp as claimed in claim 8, wherein, the cathode structure has a plurality of grooves, and the emission sources are disposed in the grooves.

10. The field emission flat lamp as claim in claim 9, wherein the grooves expose the first substrate, and the emission sources are in touch with the first substrate.

11. The field emission flat lamp as claimed in claim 8 includes a plurality of cathode structures and a plurality of gate structures, wherein, the cathode structures are in strip structure and arranged parallel with each other; the gate structures are in strip structure and arranged interlacedly in parallel with the cathode structures.

12. The field emission flat lamp as claimed in claim 11, wherein the grooves are arranged in rows along with the extension direction of the cathode structures.

13. The field emission flat lamp as claimed in claim 12, wherein, the grooves on adjacent cathode structures are arranged justified.

14. The field emission flat lamp as claimed in claim 12, wherein, the grooves on adjacent cathode structures are arranged crisscrossed each other.

15. The field emission flat lamp as claimed in claim 8, wherein the anode plate includes: a second substrate;an anode layer, disposed on the surface of the second substrate facing the cathode plate; anda fluorescent layer, disposed on the anode layer.