Abstract: A method of manufacturing a display device includes preparing a spraying device including a plurality of nozzles, dividing a discharge amount value range between a first reference discharge amount value and a second reference discharge amount value into k areas (k is a natural number), generating nozzle sets by combining n nozzles (n is a natural number) among m nozzles (m is a natural number, m?n) for each of a plurality of nozzle groups, where the nozzle sets have a same discharge amount value as one another or different discharge amount values from one another, and each of the plurality of nozzle groups is defined by the m nozzles among the plurality of nozzles, and deriving an active nozzle group in which the nozzle sets are distributed in a preset manner in the k areas from the plurality of nozzle groups.

Abstract: A printing device includes: a printer, which to include a plurality of nozzles; a discharge detection sensor configured to detect an amount of ink discharged from the plurality of the nozzles; and a nozzle combination calculator configured to determine a final nozzle combination for each pixel column on a substrate based on discharge rates of the plurality of the nozzles, where the nozzle combination calculator includes: an average value calculator configured to set a usable nozzle group for each pixel column of the substrate among the plurality of the nozzles; and a nozzle combination determiner configured to determine the final nozzle combination corresponding to each pixel column by using a moving average value of nozzle discharge rates of the nozzle group set for each pixel column.

Abstract: A method of manufacturing a display device includes preparing a spraying device including a plurality of nozzles, dividing a discharge amount value range between a first reference discharge amount value and a second reference discharge amount value into k areas (k is a natural number), generating nozzle sets by combining n nozzles (n is a natural number) among m nozzles (m is a natural number, m?n) for each of a plurality of nozzle groups, where the nozzle sets have a same discharge amount value as one another or different discharge amount values from one another, and each of the plurality of nozzle groups is defined by the m nozzles among the plurality of nozzles, and deriving an active nozzle group in which the nozzle sets are distributed in a preset manner in the k areas from the plurality of nozzle groups.

Abstract: An inkjet printing method includes generating an initial sequence in which initial numbers are arranged in a matrix form, generating a correction sequence by correcting the initial numbers with correction numbers based on a variable range for a volume of droplets ejected into pixel areas and measurement error range for discharge volume of nozzles which discharge droplets to the pixel areas, and discharging droplets to the pixel areas while adjusting a discharge volume for each nozzle based on the correction sequence.

Abstract: A printing system and a printing method, in which precision of a printing process may be enhanced, the printing system may include a controller configured to generate printing data, a user device configured to generate a first control command, generate modulation data based on a user input, and generate a second control command based on the user input, an additional controller configured to receive the printing data and the second control command and generate a driving signal based on the second control command, and including a memory storing waveform information received from the user device, and a printing device configured to perform a printing operation based on the driving signal.

Abstract: A method of inkjet printing includes applying a driving signal to a head through a controller, the head including nozzles, driving the head in response to the driving signal, and applying a first control signal that changes a driving waveform of the driving signal to the head through the controller.

Abstract: A method of manufacturing a display device includes preparing a spraying device including a plurality of nozzles, dividing a discharge amount value range between a first reference discharge amount value and a second reference discharge amount value into k areas (k is a natural number), generating nozzle sets by combining n nozzles (n is a natural number) among m nozzles (m is a natural number, m?n) for each of a plurality of nozzle groups, where the nozzle sets have a same discharge amount value as one another or different discharge amount values from one another, and each of the plurality of nozzle groups is defined by the m nozzles among the plurality of nozzles, and deriving an active nozzle group in which the nozzle sets are distributed in a preset manner in the k areas from the plurality of nozzle groups.

Abstract: An inkjet printing method includes forming a sequence of sequence numbers corresponding to a pixel matrix including pixels arranged in X rows and Y columns (where X and Y are respective natural numbers), setting nozzle combinations for the pixels, respectively, according to the sequence, and discharging ink to the pixels using respective combinations of nozzles respectively corresponding to the nozzle combinations for the pixels.

Abstract: A printing device includes: a printer, which to include a plurality of nozzles; a discharge detection sensor configured to detect an amount of ink discharged from the plurality of the nozzles; and a nozzle combination calculator configured to determine a final nozzle combination for each pixel column on a substrate based on discharge rates of the plurality of the nozzles, where the nozzle combination calculator includes: an average value calculator configured to set a usable nozzle group for each pixel column of the substrate among the plurality of the nozzles; and a nozzle combination determiner configured to determine the final nozzle combination corresponding to each pixel column by using a moving average value of nozzle discharge rates of the nozzle group set for each pixel column.

Abstract: A printed circuit board has a flexible portion where a covering layer is exposed, and a rigid portion provided by forming a resistant layer on a part of the covering layer. To produce a camera module, a lens unit and a CCD are affixed to the printed circuit board through an adhesive, wherein the CCD is located inside the lens unit. The rigid portion has a top surface that is substantially equal in shape and size to an outline of a bottom surface of the lens unit, so the top surface of the rigid portion serves as a coating area for the adhesive.

Abstract: A printed circuit board has a flexible portion where a covering layer is exposed, and a rigid portion provided by forming a resistant layer on a part of the covering layer. To produce a camera module, a lens unit and a CCD are affixed to the printed circuit board through an adhesive, wherein the CCD is located inside the lens unit. The rigid portion has a top surface that is substantially equal in shape and size to an outline of a bottom surface of the lens unit, so the top surface of the rigid portion serves as a coating area for the adhesive.