Samsung Display Co., Ltd.

Hong Gi Min

Sang Jin Lee

Myung Soo Huh

Dong Sup Kim

Byoung-Hoon Choi

Sang Hyoung Ryu

An ink-jet printing apparatus includes an ink-jet head unit including an ink-jet head, and a control device which controls an ink ejection timing of the ink-jet head and includes a comparator comparing first printing pattern information that is stored and second printing pattern information that is input with each other, a control signal generator generating a first head control signal based on the first printing pattern information when a difference between the first printing pattern information and the second printing pattern information is a reference value or less and generating a second head control signal different from the first head control signal based on the second printing pattern information when the difference between the first printing pattern information and the second printing pattern information exceeds the reference value, and a data output unit providing the first head control signal or the second head control signal to the ink-jet head unit.

Ink-jet printing apparatus, and method of forming patterns using the same

An inkjet printing system includes an inkjet head including first to n-th nozzles disposed in a row in a first direction, where the inkjet head discharges an ink onto a pixel printing target substrate, a transfer part which transfers the pixel printing target substrate toward the inkjet head in a second direction perpendicular to the first direction, a discharge waveform signal generator which generates different discharge waveform signals based on a pixel interval in the pixel printing target substrate and a transferring speed of the pixel printing target substrate, and a discharge waveform signal selector which selects first to n-th discharge waveform signals among the plurality of different discharge waveform signals based on discharge position error data respectively corresponding to the first to n-th nozzles, such that the first to n-th discharge waveform signals are selectively provided to each of the first to n-th nozzles.

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Hwaseong-si, South Korea

Hong Gi Min