LED transferring method and display module manufactured by the same
A light-emitting diode (LED) transferring method is provided. The LED transferring method includes disposing a transfer substrate, on which a plurality of LEDs of different colors are sequentially arranged in at least one row or at least one column, between a target substrate and a laser oscillator, and simultaneously transferring the plurality of LEDs from the transfer substrate to predetermined points of the target substrate by radiating a laser beam toward the target substrate from the laser oscillator.
1. A light-emitting diode (LED) transferring method comprising:
disposing a transfer substrate, on which a plurality of LEDs of different colors are sequentially arranged in at least a row or at least a column, between a target substrate and a laser oscillator; and
simultaneously transferring the plurality of LEDs from the transfer substrate to predetermined points of the target substrate by radiating a laser beam toward the target substrate from the laser oscillator, such that each of the plurality of LEDs is adjacent to at least one LED of a different color,
wherein the plurality of LEDs are arranged in a plurality of rows on the transfer substrate; and
wherein all LEDs in each respective row of the plurality of rows are a same color as each other and are a different color from LEDs in an adjacent row of the plurality of rows that is adjacent to the respective row.
2. The LED transferring method as claimed in claim 1 , wherein in the transferring, the plurality of LEDs are formed as a group that is simultaneously transferred onto the target substrate.
3. The LED transferring method as claimed in claim 2 , wherein in the transferring, a plurality of groups, including the group, are simultaneously transferred onto the target substrate at predetermined intervals.
4. The LED transferring method as claimed in claim 3 , wherein the group includes a red LED, a green LED, and a blue LED.
5. The LED transferring method as claimed in claim 4 , wherein the group further includes a white LED.
6. The LED transferring method as claimed in claim 1 , further comprising:
moving the transfer substrate by a first movement distance;
moving the target substrate by a second movement distance different from the first movement distance; and
simultaneously transferring another plurality of LEDs of different colors from the transfer substrate to the target substrate.
7. The LED transferring method as claimed in claim 1 , further comprising, after the transferring, bonding the plurality of LEDs to the target substrate by pressing the plurality of LEDs with a pressing member.
8. The LED transferring method as claimed in claim 7 , wherein the pressing member presses the plurality of LEDs through a buffer layer formed on a surface facing the plurality of LEDs.
9. The LED transferring method as claimed in claim 1 , further comprising, before the transferring, bonding a relay substrate by pressing the relay substrate toward the target substrate.
10. The LED transferring method as claimed in claim 1 , further comprising, after the transferring, bonding the plurality of LEDs to the target substrate using a thermal bonding method.
11. The LED transferring method as claimed in claim 10 , wherein the thermal bonding method comprises heating the target substrate with a heater, or heating the target substrate with an infrared laser.
12. A display module comprising:
a glass substrate; and
a plurality of light-emitting diodes (LEDs) of different colors,
wherein the display module is manufactured by disposing a transfer substrate, on which the plurality of LEDs are sequentially arranged in at least a row or at least a column, between the glass substrate and a laser oscillator; and
simultaneously transferring the plurality of LEDs from the transfer substrate to predetermined points of the glass substrate by radiating a laser beam toward the glass substrate from the laser oscillator, such that each of the plurality of LEDs is adjacent to at least one LED of a different color,
wherein the plurality of LEDs are arranged in a plurality of rows on the transfer substrate; and
wherein all LEDs in each respective row of the plurality of rows are a same color as each other and are a different color from LEDs in an adjacent row of the plurality of rows that is adjacent to the respective row.
13. The display module as claimed in claim 12 , wherein the plurality of LEDs are formed as a group.
14. The display module as claimed in claim 13 , wherein a plurality of groups, including the group, are transferred onto the glass substrate at predetermined intervals.
15. The display module as claimed in claim 13 , wherein the group includes a red LED, a green LED, and a blue LED.
16. The display module as claimed in claim 15 , wherein the red LED, the green LED, and the blue LED are sequentially arranged in the row or the column.
17. The display module as claimed in claim 13 , wherein the group further includes at least an additional LED different in color from a red LED, a green LED, and a blue LED.
18. The display module as claimed in claim 17 , wherein the additional LED is a white LED.
19. The display module as claimed in claim 18 , wherein the red LED, the green LED, the blue LED, the white LED are sequentially arranged in the row or the column.
20. A non-transitory computer readable medium including a program for executing a light-emitting diode (LED) transferring method, the LED transferring method comprising:
disposing a transfer substrate, on which a plurality of LEDs of different colors are sequentially arranged in at least one row or at least one column, between a target substrate and a laser oscillator; and
simultaneously transferring the plurality of LEDs from the transfer substrate to predetermined points of the target substrate by radiating a laser beam toward the target substrate from the laser oscillator, such that each of the plurality of LEDs is adjacent to at least one LED of a different color,
wherein the plurality of LEDs are arranged in a plurality of rows on the transfer substrate; and
wherein all LEDs in each respective row of the plurality of rows are a same color as each other and are a different color from LEDs in an adjacent row of the plurality of rows that is adjacent to the respective row.