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US 12,654,441 B2Granted
Printing device and method for controlling the same
AssigneeSamsung Display Co., Ltd.
InventorsGwangteak Lee, Jonghyeon Choi
Life of this patent
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Abstract
A printing device includes: an AC power source configured to generate power having a first frequency; a resonance circuit connected to the AC power source, including at least one inductor and at least one capacitor, and having a resonance frequency that is equal to the first frequency; and a nozzle connected to the resonance circuit and configured to discharge an ink droplet onto a substrate.
Claims14
A printing device comprising:
- a DC power source;
- a resonance circuit including an inductor and a capacitor, the resonance circuit having a resonance frequency that is a first frequency;
- a nozzle connected to the resonance circuit and configured to discharge ink droplets to a substrate;
- a first transistor configured to be turned on according to a control signal having a same frequency as the first frequency and configured to transmit the DC power source to the resonance circuit;
- and
- a second transistor configured to connect input terminals of the resonance circuit to a ground based on being turned on according to an inverted signal from the control signal.
3 more elements
A control method for controlling a printing device, the printing device including:
- a DC power source;
- a resonance circuit including an inductor and a capacitor and having a resonance frequency that is a first frequency;
- a nozzle configured to discharge an ink droplet on a substrate;
- and
- first and second transistors configured to supply the DC power source to the resonance circuit according to a control signal, the method comprising:
- applying a control signal having a second frequency as a switching frequency;
- determining whether or not the second frequency is equal to the first frequency based on an output terminal voltage signal of the resonance circuit;
- and
- increasing or decreasing the switching frequency to control the switching frequency to be equal to the first frequency if the second frequency is not equal to the first frequency.
6 more elements
Dependencies are inferred from the claim text.