Thin film field emitting cathode with gradually changed electronic transmission layer component
Title：
Thin film field emitting cathode with gradually changed electronic transmission layer component
Application Number：
 01140447
Application Date：
 2001/12/07
Announcement Date：
 2002/06/05
Pub. Date：
 2004/03/17
Publication Number：
 1352463
Announcement Number：
 1142572
Grant Date：
Granted Pub. Date：
 2004-3-17
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H01J 1/304, H01J 29/04
Applicant(s)：
 Qinghua Univ.
Inventor(s)：
 Li Dejie
Key Words：
 Thin film, field emitting, cathode, gradually changed, electronic transmission layer component
Abstract：
 A film field emission cathode with ingredient gradually changed in electron transport layer belongs to the technique area of vacuum electron emission type of flat display device, especially in relates to the structural design of plane type field emission cathode. The invention is composed of base plate glass, lower metal electrode, insulated layer with single component, electron transport layer and upper electrode. The medium film the ingredient gradually changed is adopted in electron transport layer, i.e. from button to top of the medium film, the ingredient of high electric affinity is changed to that of lower electric affinity. Metal or semiconductor film with lower work function is adopted in the upper electrode. The invention possesses features of large emissive current, long service life and lower cost. It is suitable for producing field emission type flat display device with large area.
Claim：
Priority：
PCT：
LegalStatus：

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