Device transferring method, and device arraying method and image display unit fabricating method using the same
First Claim
1. A device transferring method of selectively transferring devices arrayed on a first substrate to a second substrate on which an adhesive resin layer is previously formed, the method comprising the steps of:
- selectively heating te adhesive resin layer on the second substrate by laser irradiation from a back surface side of the second substrate; and
curing a selectively heated portion of the adhesive resin layer, thereby adhesively bonding devices to be transferred of the devices arrayed on the first substrate to the second substrate.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of selectively transferring devices arrayed on a first substrate to a second substrate on which an adhesive resin layer is previously formed is provided. The method includes steps of selectively heating the adhesive resin layer on the second substrate by laser irradiation from the back surface side of the second substrate, and curing the selectively heated portions of the adhesive resin layer, thereby adhesively bonding those to be transferred of the devices to the second substrate. At this time, portions, corresponding to the devices, of the adhesive layer are heated directly or indirectly via the devices or wiring portions by laser irradiation from the back surface side of the substrate. The heated portions of the adhesive resin layer selectively exhibit the adhesive forces. The heated portions of the adhesive layer are then cured, so that only the devices to be transferred are selectively transferred to the second substrate. As a result, only the devices to be transferred can be done so with certainty, efficiency, and accuracy without exerting adverse effect on other parts.
-
Citations
12 Claims
-
1. A device transferring method of selectively transferring devices arrayed on a first substrate to a second substrate on which an adhesive resin layer is previously formed, the method comprising the steps of:
-
selectively heating te adhesive resin layer on the second substrate by laser irradiation from a back surface side of the second substrate; and
curing a selectively heated portion of the adhesive resin layer, thereby adhesively bonding devices to be transferred of the devices arrayed on the first substrate to the second substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A device arraying method of re-arraying a plurality of devices arrayed on a first substrate to a second substrate, the method comprising the steps of:
-
a first transferring step including transferring the devices from the first substrate to a temporarily holding member such that the devices are spaced from each other with a pitch larger than a pitch of the devices arrayed on the first substrate and holding the devices on the temporarily holding member;
a covering step including covering the devices held on the temporarily holding member with a resin;
a dicing step including dicing the resin so as to isolate the devices from each other;
a second transferring step including transferring the resin-covered devices held on the temporarily holding member to the second substrate such that the resin-covered devices are spaced from each other with a pitch larger than a pitch of the resin-covered devices held on the temporarily holding member;
wherein the second transferring step includes the steps of selectively heating an adhesive resin layer on the second substrate by laser irradiation from a back surface side of the second substrate, and curing the selectively heated portions of the adhesive resin layer, thereby adhesively bonding the devices to be transferred of the resin-covered devices to the second substrate. - View Dependent Claims (9, 10, 11)
-
-
12. An image display unit fabricating method of fabricating an image display unit including light emitting devices disposed in a matrix, the method comprising the steps of:
-
a first transferring step including transferring the light emitting devices from the first substrate to a temporarily holding member such that the light emitting devices are spaced from each other with a pitch larger than a pitch of the light emitting devices arrayed on the first substrate and holding the light emitting devices on the temporarily holding member, a covering step including covering the light emitting devices held on the temporarily holding member with a resin;
a dicing step including dicing the resin so as to isolate the light emitting devices from each other, a second transferring step including transferring the resin-covered light emitting devices held on the temporarily holding member to the second substrate such that the resin-covered light emitting devices are spaced from each other with a pitch larger than a pitch of the resin covered light emitting devices held on the temporarily holding member;
wherein the second transferring step includes the steps of selectively heating an adhesive resin layer previously applied on a first surface side of the second substrate by laser irradiation from a second surface side of the second substrate, and curing the selectively heated portions of the adhesive resin layer, thereby adhesively bonding the devices to be transferred of the resin-covered light emitting devices to the second substrate.
-
Specification