Apparatus and method for rapid monitoring of inkjet ink droplets using time delay integration
AssigneePukyong National University Industry-University Cooperation Foundation
InventorDong-Youn Shin
Life of this patent
Estimating the term…
Abstract
An apparatus and a method for rapid monitoring of inkjet ink droplets using time delay integration are proposed. Inkjet ink droplets used in manufacturing a display panel may be captured for a set period of time using a wide one-dimensional (1D) line scan camera to obtain a plurality of pieces of high-resolution small-amount image data. The obtained plurality of pieces of high-resolution small-amount image data may be subjected to image processing to generate ink droplet two-dimensional (2D) time-space information. The ink droplet two-dimensional (2D) time-space information may be compared with pre-stored reference ink droplet 2D time-space information to determine whether the ink droplets are normal.
Claims17
An apparatus for rapid monitoring of inkjet ink droplets using time delay integration, the apparatus comprising:
- a light strobe using at least one light emitting diode (LED) or laser excited phosphor and configured to emit light to the ink droplets dropped from an inkjet print head;
- a wide 1D line scan camera provided facing the light strobe and configured to capture the ink droplets with a set period to obtain high-resolution small-amount ink droplet image data;
- and
- a controller configured to:
- collect the high-resolution small-amount ink droplet image data obtained for the set period and perform image processing on the high-resolution small-amount ink droplet image data to obtain ink droplet 2D time-space information, and
- compare the ink droplet 2D time-space information with pre-stored reference ink droplet 2D time-space information to determine whether the ink droplets are normal.
An apparatus for rapid monitoring of inkjet ink droplets using time delay integration, the apparatus comprising:
- a laser excited phosphor light strobe configured to emit incoherent light, generated from a phosphor excited by a laser, to the ink droplets dropped from an inkjet print head;
- a wide 1D line scan camera provided facing the laser excited phosphor light strobe and configured to capture the ink droplets with a set period to obtain high-resolution small-amount ink droplet image data;
- and
- a controller configured to:
- collect the high-resolution small-amount ink droplet image data obtained for the set period and perform image processing on the high-resolution small-amount ink droplet image data to obtain ink droplet 2D time-space information, and
- compare the ink droplet 2D time-space information with pre-stored reference ink droplet 2D time-space information to determine whether the ink droplets are normal.
A method for rapid monitoring of inkjet ink droplets, dropped from an inkjet print head, using time delay integration, the method comprising:
- collecting, by a controller, high-resolution small-amount ink droplet image data obtained by capturing the ink droplets, dropped from the inkjet print head, for a set period by a wide 1D line scan camera and a light strobe;
- performing, by the controller, image processing on the collected high-resolution small-amount ink droplet image data to generate ink droplet 2D time-space information;
- determining, by the controller, whether the ink droplets are normal by comparing the generated ink droplet 2D time-space information with pre-stored reference ink droplet 2D time-space information;
- and
- displaying, by the controller, a result of determining whether the ink droplets are normal, through a display.
Dependencies are inferred from the claim text.