# US 8,786,171 B2 · Field emission light source device and manufacturing method thereof

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- Number: US 8,786,171 B2
- Document ID: US8786171B2
- Status: Granted
- Kind: B2
- Application number: 13/821,512
- Filed: 2010-09-20
- Published: 2013-07-04
- Granted: 2014-07-22
- Earliest claimed: 2010-09-20
- Assignees: Ocean's King Lighting Science & Technology Co., Ltd.
- Applicants: Mingjie Zhou; Wenbo Ma; Qingtao Li
- Inventors: Mingjie Zhou; Wenbo Ma; Qingtao Li
- Web page: https://patentgrep.com/patent/US8786171B2

## CPC

- H01J 1/90: Insulation between electrodes or supports within the vacuum space
- H01J 9/24: Manufacture or joining of vessels, leading-in conductors or bases
- H01J 9/38: Exhausting, degassing, filling, or cleaning vessels
- H01J 61/30: Vessels; Containers
- H01J 63/02: Details, e.g. electrode, gas filling, shape of vessel
- H01J 63/06: Lamps with luminescent screen excited by the ray or stream
- H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H)

## Abstract

A field emission light source device, comprising: cathode plate comprising substrate and cathode conductive layer disposed on surface of substrate, and anode plate comprising base formed from transparent ceramic material and anode conductive layer disposed on one surface of base, and insulating support member by which cathode plate and anode plate are integrally fixed, and vacuum-tight chamber formed with anode plate, cathode plate and insulating support member; anode conductive layer and the cathode plate are disposed opposite each other. Because of advantages of good electrical conductivity, high light transmittance, stable electron-impact resistance performance and uniform luminescence, using transparent ceramic as the base of the anode plate in the field emission light source device can increase electron beam excitation efficiency effectively, increase light extraction efficiency of the field emission light source device, and finally increase its luminous efficiency. A manufacturing method of the field emission light source device is also provided.

## Claims

### Claim 1

A manufacturing method of field emission light source device, comprising:
preparing a base formed from transparent ceramic, and disposing a anode conductive layer on one surface of said base to obtain anode plate;
preparing a cathode conductive layer on one surface of substrate to obtain cathode plate;
disposing said anode plate and said cathode plate spaced apart from each other, and disposing said cathode plate and anode conductive layer on said anode plate opposite each other; next, fixing integrally said cathode plate and said anode plate by an insulating support member to form a chamber with said anode plate, said cathode plate and said insulating support member;
vacuum sealing the chamber formed with said cathode plate, said anode plate and said insulating support member to obtain said field emission light source device;
wherein,
said preparation of said anode plate further comprises a step of cleaning, comprising: sonicating transparent ceramic successively with acetone, absolute ethanol, deionized water, and then air-drying; said anode conductive layer is disposed on a surface of said base by magnetron sputtering or evaporation technique;
said preparation of said cathode plate further comprises a step of cleaning, comprising: sonicating said substrate successively with acetone, absolute ethanol, deionized water, and then air-drying; said cathode conductive layer is disposed on said substrate by magnetron sputtering technique;
in said step of sealing, the material used for sealing is glass pastes having a melting point of 380° C. to 550° C.

### Claim 2

A manufacturing method of field emission light source device, comprising:
preparing a base formed from transparent ceramic, and disposing a anode conductive layer on one surface of said base to obtain anode plate;
preparing a cathode conductive layer on one surface of substrate to obtain cathode plate;
disposing said anode plate and said cathode plate spaced apart from each other, and disposing said cathode plate and anode conductive layer on said anode plate opposite each other; next, fixing integrally said cathode plate and said anode plate by an insulating support member to form a chamber with said anode plate, said cathode plate and said insulating support member;
vacuum sealing the chamber formed with said cathode plate, said anode plate and said insulating support member to obtain said field emission light source device;
wherein said step of sealing further comprises a treatment of placing a getter into exhaust pipe during the vacuum treatment.

### Claim 3 (depends on 1)

The manufacturing method of the field emission light source device as claimed in the claim 1, wherein said step of sealing further comprises a treatment of placing a getter into exhaust pipe during the vacuum treatment.