Substrate processing device and control method for substrate processing device

A substrate processing device, comprising:

• a substrate transfer part on which a transfer object is received;
• and
• a jetting system part including:
• an ink jet body configured to jet and print ink on the transfer object over an upper surface of the substrate transfer part;
• an ink module transfer part configured to transfer the ink jet body;
• an encoder disposed around the ink module transfer part and configured to output a movement signal per unit movement distance of the ink module transfer part;
• an ink ejection controller configured to interwork with the ink jet body to control an ink jetting timing of the ink jet body;
• and
• a signal splitter configured to interwork with the encoder to count the movement signal, reset a width of the counted movement signal, and transmit the movement signal, the width of which is reset, to the ink ejection controller,
• wherein the encoder outputs the movement signal as pulse waves to the signal splitter,
• wherein the signal splitter counts widths of the pulse waves and resets the counted widths to output an alternative pulse wave,
• wherein the signal splitter counts the pulse waves output from the encoder for each defined unit and resets the widths of the counted pulse waves to output the alternative pulse wave,
• wherein the alternative pulse wave is generated at a time point when the last pulse wave in the defined unit is received by the signal splitter,
• wherein the signal splitter outputs an alternative pulse wave for precision movement in a non-defined unit deviating from the defined unit together with the alternative pulse wave,
• wherein the signal splitter subtracts or adds a width corresponding to one or more pulse waves output from the encoder from or to the pulse waves output from the encoder when outputting the alternative pulse wave for precision movement,
• wherein a plurality of ink jet bodies and a plurality of ink ejection controllers interwork with each other to jet the ink,
• wherein the signal splitter outputs the alternative pulse wave to each of the plurality of ink ejection controllers,
• wherein the signal splitter generates the alternative pulse wave using a multiplier,
• wherein the ink module transfer part includes:
• a module base on which the ink jet body is mounted;
• an actuator driving part configured to transfer the module base in one direction;
• and
• an ink module location controller configured to control the actuator driving part to transfer the module base and control a location where the ink is jetted, and
• wherein the ink module location controller interworks with the encoder to obtain location information of the module base from the encoder.