Title:
CIRCUIT FOR DRIVING ACTIVE MATRIX ELECTROLUMINESCENT DEVICE
Document Type and Number:
Japanese Patent JP3950988
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a circuit for driving an AMELD capable of being integral with a current drive IC, receiving an n-bit digital signal, and adjusting an output current of each RGB channel.
SOLUTION: In the AMELD driving circuit including a data driver and a gate driver for transmitting a data signal and a scanning signal to each pixel of a panel, the data driver is characterized in comprising a latching part for latching a control signal stored temporarily, and a plurality of D-A converters for outputting specific level reference currents as each of RGB signals by the latched control signal. Namely, the data driver is technically characterized in temporarily selecting n-pieces of reference current values and thereby selecting/non-selecting them according to the n-bit digital signal to express a desired gray level, being provided with voltage terminals held at a constant voltage and voltage terminals of which the voltage varies for each RGB channel, and thus adjusting the output current values for each color.
Inventors:
Bae, Seung Jun
Lee, Han Sun
Park Junkyu
Lee, Han Sun
Park Junkyu
Application Number:
JP2001381400A
Publication Date:
August 01, 2007
Filing Date:
December 14, 2001
Export Citation:
Assignee:
LJ Phillips LCD Company Limited
International Classes:
G09G3/20; G09G3/30; (IPC1-7): G09G3/30; G09G3/20
Domestic Patent References:
| JP2000105574A | ||||
| JP2000276108A | ||||
| JP2000122608A | ||||
| JP2000056732A | ||||
| JP2002055654A | ||||
| JP8106075A | ||||
| JP6314977A | ||||
| JP11282419A | ||||
| JP2148687A |
Attorney, Agent or Firm:
Sonoda Yoshitaka
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