Title:
PHOTOAMPLIFIER
Document Type and Number:
Japanese Patent JPS5893293
Kind Code:
A
Abstract:
PURPOSE:To improve the intensity and the contrast of a photoamplifier by forming a substance having good electric conductivity and light reflectivity in an insular shape and inserting instead of an opaque layer a layer surrounded by an insulator having good light absorbance at the periphery. CONSTITUTION:The layer of the structure that a substance having good electric conductivity and good light reflectivity such as, for example, an aluminum film is formed in an insular shape and the periphery is surrounded by an insulating having good light absorbance is inserted instead of an opaque layer. An optical image reproduced on a photoconductive film 3 is sampled by an electric conductor 7, and is tansmitted as information to an electroluminescence EL layer. The periphery of the conductor 7 is surrounded by an insulator 8, and the conductors 7 are maintained in an electrically insulated state from each other. In other words, the information of the photoconductive film 3 which is contacted with the conductor 7 is small in an electric resistance of the conductor 7, and can be completely transmitted to the EL layer. Therefore, in this manner, the intensity and the contrast of the titled device can be improved.
Inventors:
OOSAWA MICHITAKA
OOKI MASAFUMI
KABUTO NOBUAKI
SAKURAI SOUICHI
INOUE FUMIO
OOKI MASAFUMI
KABUTO NOBUAKI
SAKURAI SOUICHI
INOUE FUMIO
Application Number:
JP19072381A
Publication Date:
June 02, 1983
Filing Date:
November 30, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01L31/14; (IPC1-7): H01L33/00
Attorney, Agent or Firm:
Toshiyuki Usuda