Non-contact transfer printing
First Claim
Patent Images
1. A method of transferring ink from a donor substrate to a receiving substrate, said method comprising:
- providing a transfer device having a transfer surface;
providing said donor substrate having a donor surface, said donor surface having said ink thereon, wherein said ink is a micro-sized or nano-sized prefabricated electronic, optical or electro-optical device or component thereof;
contacting at least a portion of said transfer surface with at least a portion of said ink;
separating said transfer surface from said donor surface, wherein said ink is transferred from said donor surface to said transfer surface;
positioning said transfer surface having said ink disposed thereon into alignment with a receiving surface of said receiving substrate, wherein a gap remains between said ink disposed on said transfer surface and said receiving surface; and
actuating said transfer device, said ink, or both of said transfer device and said ink by generating a force that releases said ink from said transfer surface while maintaining at least a portion of said gap, thereby transferring said ink to said receiving surface and retaining the structure of the ink.
2 Assignments
0 Petitions
Accused Products
Abstract
A transfer printing process that exploits the mismatch in mechanical or thermo-mechanical response at the interface of a printable micro- or nano-device and a transfer stamp to drive the release of the device from the stamp and its non-contact transfer to a receiving substrate are provided. The resulting facile, pick-and-place process is demonstrated with the assembling of 3-D microdevices and the printing of GAN light-emitting diodes onto silicon and glass substrates. High speed photography is used to provide experimental evidence of thermo-mechanically driven release.
-
Citations
84 Claims
-
1. A method of transferring ink from a donor substrate to a receiving substrate, said method comprising:
-
providing a transfer device having a transfer surface; providing said donor substrate having a donor surface, said donor surface having said ink thereon, wherein said ink is a micro-sized or nano-sized prefabricated electronic, optical or electro-optical device or component thereof; contacting at least a portion of said transfer surface with at least a portion of said ink;
separating said transfer surface from said donor surface, wherein said ink is transferred from said donor surface to said transfer surface;
positioning said transfer surface having said ink disposed thereon into alignment with a receiving surface of said receiving substrate, wherein a gap remains between said ink disposed on said transfer surface and said receiving surface; and
actuating said transfer device, said ink, or both of said transfer device and said ink by generating a force that releases said ink from said transfer surface while maintaining at least a portion of said gap, thereby transferring said ink to said receiving surface and retaining the structure of the ink. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84)
-
Specification