Laser irradiation apparatus

Abstract

A laser irradiation apparatus includes a plurality of laser heads from which a laser is irradiated, can adjust arranged intervals of the laser heads, and moves freely to irradiate the laser along a shape of a subject. A laser oscillator oscillates a laser. A plurality of laser heads linearly irradiate the laser oscillated by the laser oscillator. A first driving means adjusts arranged intervals of the laser heads, and moves the laser heads in an X direction. A second driving means moves the laser heads in a Y direction different from the X direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of the invention, and many of the attendant advantages thereof, will be readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings in which like reference symbols indicate the same or similar components, wherein:

FIG. 1 is a perspective view of a sheet unit substrate before an organic light emitting display is separated into individual devices;

FIG. 2 is a schematic view showing a conventional laser irradiation apparatus;

FIG. 3 is a perspective view of a laser irradiation apparatus according to an embodiment of the present invention;

FIGS. 4A and 4B are operational views of adjusting an interval between laser heads in FIG. 3;

FIGS. 5A and 5B are operational views of adjusting the position of the laser irradiation apparatus of FIG. 3 in an X direction; and

FIGS. 6A and 6B are operational views of adjusting the position of the laser irradiation apparatus of FIG. 3 in a Y direction.

Claims

1. A laser irradiation apparatus comprising: a laser oscillator for oscillating a laser;a plurality of laser heads for linearly irradiating said laser oscillated by said laser oscillator;a first driving means for adjusting arranged intervals of said laser heads, and for moving said laser heads in an X direction; anda second driving means for moving said laser heads in a Y direction different from the X direction.

2. The laser irradiation apparatus as claimed in claim 1, wherein an angle of 90 degrees exists between the X and Y directions.

3. The laser irradiation apparatus as claimed in claim 1, wherein the first driving means comprises: a cross hanger including a plurality of units having an X shape, which continue to be linked for connecting said laser heads to each other;a first lead screw formed to penetrate a part of said laser heads;at least one first guide bar disposed to penetrate a part of said laser heads and parallel with said first lead screw;a first motor for rotating said first lead screw;a second lead screw disposed to penetrate remaining parts of said laser heads on an extension line of said first lead screw;a second guide bar formed to penetrate remaining parts of said laser heads parallel with said second lead screw; anda second motor for rotating said second lead screw.

4. The laser irradiation apparatus as claimed in claim 3, wherein units of said cross hanger have the same size.

5. The laser irradiation apparatus as claimed in claim 3, further comprising a connecting member for connecting said first lead screw and said second lead screw to each other while interrupting a supply of a power to said first lead screw and said second lead screw.

6. The laser irradiation apparatus as claimed in claim 1, wherein said second driving means comprises: a slide member connected at both ends of a lead screw and a guide bar;a slide route, said slide member being guided on said slide route; anda third motor for driving said slide member.

7. The laser irradiation apparatus as claimed in claim 1, further comprising a controller for controlling said first driving means and said second driving means according to the arranged intervals and a moving path of said laser heads.

8. A laser irradiation apparatus for irradiating a laser to a frit, which seals an organic emission layer of an organic light emitting display from an outside air, comprising: a laser oscillator for oscillating a laser; anda plurality of laser heads for irradiating said laser oscillated by said laser oscillator to a plurality of frits formed on a sheet substrate before the organic light emitting display is cut into individual devices.

9. The laser irradiation apparatus as claimed in claim 8, further comprising: a first driving means for adjusting arranged intervals of said laser heads, and for driving said laser heads in an X direction so that said laser heads move along a line formed by the frits; anda second driving means for moving said laser heads in a Y direction different from the X direction.

10. The laser irradiation apparatus as claimed in claim 9, wherein the frit has a square line shape, the X direction is a transverse direction of the frit, and the Y direction is a longitudinal direction of the frit.

11. The laser irradiation apparatus as claimed in claim 8, wherein said first driving means comprises: a cross hanger to which a plurality of X shapes continuing to be linked for connecting said laser heads to each other;a first lead screw formed to penetrate a part of said laser heads;at least one first guide bar disposed to penetrate a part of said laser heads parallel with said first lead screw;a first motor for rotating said first lead screw;a second lead screw disposed to penetrate remaining parts of said laser heads on an extension line of said first lead screw;a second guide bar formed to penetrate remaining parts of said laser heads parallel with said second lead screw; anda second motor for rotating said second lead screw.

12. The laser irradiation apparatus as claimed in claim 11, wherein units of said cross hanger have the same size.

13. The laser irradiation apparatus as claimed in claim 11, further comprising a connecting member for connecting said first lead screw and said second lead screw to each other while interrupting a supply of a power to said first lead screw and said second lead screw.

14. The laser irradiation apparatus as claimed in claim 8, wherein said second driving means comprises: a slide member connected at both ends of a lead screw and a guide bar;a slide route, said slide member being guided on said slide route; anda third motor for driving said slide member.

15. The laser irradiation apparatus as claimed in claim 14, wherein said slide member is a ball bushing, and a slide route is a shaft.

16. The laser irradiation apparatus as claimed in claim 8, further comprising a controller for controlling said first driving means and said second driving means according to the arranged intervals and a moving path of said laser heads.

17. The laser irradiation apparatus as claimed in claim 8, wherein a wavelength of the laser irradiated by the laser irradiation apparatus ranges from 800 nanometers to 120 nanometers.

18. A laser irradiation apparatus comprising: a plurality of laser heads for linearly irradiating oscillated laser;a first unit adjusting arranged intervals of said laser heads, and moving said laser heads in a first direction; anda second unit moving said laser heads in a second direction different from the first direction.

19. The laser irradiation apparatus as claimed in claim 18, wherein the first unit comprises: a first member connecting said laser heads to each other and accommodating a change in position of said laser heads;a first lead screw formed to penetrate a portion of said laser heads;a first guide bar disposed to penetrate a portion of said laser heads and parallel with said first lead screw;a first motor for rotating said first lead screw;a second lead screw disposed to penetrate remaining portion of laser heads on an extension line of said first lead screw;a second guide bar formed to penetrate remaining portions of said laser heads parallel with said second lead screw; anda second motor for rotating said second lead screw, the relationship between the directional movement of the first and second motors accommodating the adjusting of arranged intervals between the laser heads and the movement of the laser heads in the first direction.

20. The laser irradiation apparatus as claimed in claim 19, wherein said second unit comprises: a first slide member connected at an end of said first lead screw and said first guide bar and a second slide member connected to the opposite end of said second lead screw and said second guide bar;a slide route guiding said first and second slide members; anda third motor for driving said slide member.