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Patent Searching and Data


Title:
COLOR LED DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPH04241384
Kind Code:
A
Abstract:

PURPOSE: To solve such problems that it is hard to lead out terminals since the terminals are too many in a static driving system so it comes to hard to constitute a driving circuit since a current value is large in a dynamic driving system, when driving the color LED display device on which light emitting diodes are arranged in the row and column direction.

CONSTITUTION: Dot signals DS1-DS256 corresponding to the dots of a color LED display unit are provided and chrominance signal lines R, G, and B corresponding to light emission colors are provided; and light emission diodes which emit light of the same colors are driven at a time while a period is divided by the light emission colors.


Inventors:
NAKAGAWA TAKAO
YOSHIKAWA NAKATSUGU
Application Number:
JP1387091A
Publication Date:
August 28, 1992
Filing Date:
January 11, 1991
Export Citation:
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Assignee:
SEIWA ELECTRIC MFG
International Classes:
G09G3/20; G09G3/32; H01L33/08; (IPC1-7): G09G3/20; G09G3/32; H01L33/00
Attorney, Agent or Firm:
Koji Onishi