DISPLAY DEVICE PROVIDED WITH MEMORY FUNCTION

PROBLEM TO BE SOLVED: To effectively improve brightness by providing a light emitting element such as an EL low in brightness with a memory function. SOLUTION: Phototransistors 6, 7 and 8 light-shielded by masks 9 and starting light emitting small pixels 3, 4 and 5 are formed on a lass substrate (on...

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Bibliographic Details
Main Authors IKEZU YUICHI, MIZUTANI KAZUHIRO, MORIOKA DAIGO
Format Patent
LanguageEnglish
Published 15.08.1997
Edition6
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
BASIC ELECTRIC ELEMENTS
CRYPTOGRAPHY
DISPLAY
DISPLAYING
EDUCATION
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
LABELS OR NAME-PLATES
PHYSICS
SEALS
SEMICONDUCTOR DEVICES
SIGNS
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Summary:PROBLEM TO BE SOLVED: To effectively improve brightness by providing a light emitting element such as an EL low in brightness with a memory function. SOLUTION: Phototransistors 6, 7 and 8 light-shielded by masks 9 and starting light emitting small pixels 3, 4 and 5 are formed on a lass substrate (on back surface in the state shown by the figure). The phototransistor 8 and a capacitor 15 are connected to the pixel 5 in parallel. The pixels 4 and 5 are serially connected between a power supply line 12 and a GND line 13. The anode of the pixel 3 is connected to a scan line 17 and the cathode is connected to a data line 16. The phototransistors 6, 7 and 8 are constituted so as to be sensible only to the light beams of the pixels 3, 4 and 5. When the pixel 3 emits a light beam, the phototransitstor 6 short-circuits the pixel 4 and the pixel 5 emits a light beam. The phototransistor 8 responds to the beam, short-circuits the pixel 5 and the pixel 4 emits a light beam. Thus, the pixels 4 and 5 alternatively emit light beams.
Bibliography:Application Number: JP19960022298