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US 9,852,674 B2Granted
Demultiplexer and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorsYoung Wan Seo, Jong Hee Kim, Ji Sun Kim, Jae Keun Lim, Chong Chul Chai
Life of this patent
Estimating the term…
Abstract
A demultiplexer includes: a first transistor connected between a data input terminal and a first output terminal; a second transistor connected between the data input terminal and a second output terminal; and a first pre-charge circuit connected to a gate electrode of the first transistor, the first pre-charge circuit including: a third transistor and a first diode connected between a first clock input terminal and the gate electrode of the first transistor in parallel; and a first capacitor connected between a second clock input terminal and the gate electrode of the first transistor.
Claims11
A demultiplexer comprising:
- a first transistor connected between a data input terminal and a first output terminal;
- a second transistor connected between the data input terminal and a second output terminal;
- a first pre-charge circuit connected to a gate electrode of the first transistor, the first pre-charge circuit comprising:
- a third transistor and a first diode connected between a first clock input terminal and the gate electrode of the first transistor in parallel;
- and
- a first capacitor connected between a second clock input terminal and the gate electrode of the first transistor;
- and
- a second pre-charge circuit connected to a gate electrode of the second transistor, the second pre-charge circuit comprising:
- a fourth transistor and a second diode connected between a third clock input terminal and the gate electrode of the second transistor in parallel;
- and
- a second capacitor connected between a fourth clock input terminal and the gate electrode of the second transistor,
- wherein a gate electrode of the third transistor is connected to the third clock input terminal.
9 more elements
A demultiplexer comprising:
- a first transistor connected between a data input terminal and a first output terminal;
- a second transistor connected between the data input terminal and a second output terminal;
- a first pre-charge circuit connected to a gate electrode of the first transistor, the first pre-charge circuit comprising:
- a third transistor and a first diode connected between a first clock input terminal and the gate electrode of the first transistor in parallel;
- and
- a first capacitor connected between a second clock input terminal and the gate electrode of the first transistor;
- a second pre-charge circuit connected to a gate electrode of the second transistor, the second pre-charge circuit comprising:
- a fourth transistor and a second diode connected between a third clock input terminal and the gate electrode of the second transistor in parallel;
- and
- a second capacitor connected between a fourth clock input terminal and the gate electrode of the second transistor,
- wherein a gate electrode of the fourth transistor is connected to the first clock input terminal.
8 more elements
A display device comprising:
- a plurality of pixels connected to a plurality of scan lines and data lines;
- a scan driver configured to supply scan signals to the pixels through the scan lines;
- a data driver configured to output data signals;
- and
- a demultiplexer configured to receive the data signals from the data driver through a plurality of data input terminals, and to output the data signals to the data lines through a plurality of output terminals, the demultiplexer comprising:
- a first transistor connected between a data input terminal from among the data input terminals and a first output terminal from among the output terminals;
- a second transistor connected between the data input terminal from among the data input terminals and a second output terminal from among the output terminals;
- a first pre-charge circuit connected to a gate electrode of the first transistor, the first pre-charge circuit comprising:
- a third transistor and a first diode connected between a first clock input terminal and the gate electrode of the first transistor in parallel;
- and
- a first capacitor connected between a second clock input terminal and the gate electrode of the first transistor;
- and
- a second pre-charge circuit connected to a gate electrode of the second transistor, the second pre-charge circuit comprising:
- a fourth transistor and a second diode connected between a third clock input terminal and the gate electrode of the second transistor in parallel;
- and
- a second capacitor connected between a fourth clock input terminal and the gate electrode of the second transistor,
- wherein a gate electrode of the third transistor is connected to the third clock input terminal.
14 more elements
Dependencies are inferred from the claim text.