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Title:
CIRCUIT FOR DRIVING LED DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2002244619
Kind Code:
A
Abstract:

To reduce a circuit scale of a driving circuit of a full-color LED display device, and also to prevent deterioration of picture quality.

The circuit for driving the LED display device having picture elements P11-Pnm composed of a plurality of LEDs (LR11, LG11, LB11-LRnm, LGnm, LBnm) differing in luminescent color from each other, is provided with common drivers 1 connected with these LEDs, a 1st switching means 2 for sequentially switching on a voltage from a power supply circuit 24 to supply it to the LEDs of each luminescent color among these LEDs, and a 2nd switching means for sequentially switching on the display data for each luminescent color to supply it to the driver 1 in synchronizm with the switching operation of the 1st switching means 2.


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Inventors:
ONO MUNENORI
OKAMOTO EIZOU
Application Number:
JP2001038704A
Publication Date:
August 30, 2002
Filing Date:
February 15, 2001
Export Citation:
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Assignee:
SONY CORP
International Classes:
G09G3/32; G09G3/20; H01L33/00; (IPC1-7): G09G3/32; G09G3/20
Domestic Patent References:
JPH06208335A1994-07-26
JP2000503133A2000-03-14
JPH04241384A1992-08-28
JPH07311560A1995-11-28
Foreign References:
WO2000057397A12000-09-28
Attorney, Agent or Firm:
Hidekuma Matsukuma



 
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