Methods for surface attachment of flipped active components
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-023/00
H01L-023/31
H01L-025/065
H01L-025/07
H01L-025/04
H01L-021/56
H01L-021/683
H05K-003/20
H01L-025/075
H05K-001/18
출원번호
US-0990449
(2018-05-25)
등록번호
US-10262966
(2019-04-16)
발명자
/ 주소
Bower, Christopher
출원인 / 주소
X-Celeprint Limited
대리인 / 주소
Haulbrook, William R.
인용정보
피인용 횟수 :
0인용 특허 :
132
초록▼
An active substrate includes a plurality of active components distributed over a surface of a destination substrate, each active component including a component substrate different from the destination substrate, and each active component having a circuit and connection posts on a process side of th
An active substrate includes a plurality of active components distributed over a surface of a destination substrate, each active component including a component substrate different from the destination substrate, and each active component having a circuit and connection posts on a process side of the component substrate. The connection posts may have a height that is greater than a base width thereof, and may be in electrical contact with the circuit and destination substrate contacts. The connection posts may extend through the surface of the destination substrate contacts into the destination substrate connection pads to electrically connect the connection posts to the destination substrate contacts.
대표청구항▼
1. A method of making a wafer having transfer-printable active components disposed therein or thereon, comprising: providing a wafer;disposing active components in or on the wafer, the active components each comprising a circuit structure having a post surface and an opposing stamp surface, the circ
1. A method of making a wafer having transfer-printable active components disposed therein or thereon, comprising: providing a wafer;disposing active components in or on the wafer, the active components each comprising a circuit structure having a post surface and an opposing stamp surface, the circuit structure comprising an electronic circuit;disposing a plurality of electrically conductive connection posts on each of the active components, the plurality of connection posts protruding from the post surface, wherein the plurality of connection posts are physically connected to the circuit structure and electrically connected to the electronic circuit; anddisposing a breakable component tether releasably attaching the circuit structure to the wafer. 2. The method of claim 1, comprising providing a destination substrate comprising a receiving surface and electrical contacts disposed on the receiving surface and transfer printing one or more of the active components from the wafer to the receiving surface of the destination substrate so that each of the conductive connection posts protruding from the post surface of the one or more of the active components is electrically connected to an electrical contact of the electrical contacts. 3. The method of claim 2, comprising transfer printing one or more of the active components from the wafer to the receiving surface of the destination substrate using a stamp so that each of the conductive connection posts protruding from the post surface of the one or more of the active components is electrically connected to an electrical contact of the electrical contacts. 4. The method of claim 2, comprising disposing an adhesive layer on the receiving surface of the destination substrate to adhere the one or more active components to the destination substrate. 5. The method of claim 1, comprising building up a three-dimensional structure to form each of the plurality of connection posts. 6. An active component, comprising: a circuit structure comprising an electronic circuit and connection pads, each of the connection pads electrically connected to the electronic circuit;an electrically conductive connection post protruding from each of the connection pads and electrically connected to the electronic circuit; anda fractured component tether physically connected to the circuit structure. 7. The active component of claim 6, wherein the connection pads are each a planar electrical connection formed on a surface of the circuit structure. 8. The active component of claim 6, wherein the connection post protruding from each of the connection pads has a peak that is a sharp point. 9. The active component of claim 6, wherein the connection post protruding from each of the connection pads has one or more of a height that is greater than its base width, a base width that is greater than its peak width, and a base area that is greater than its peak area. 10. The active component of claim 6, wherein the electronic circuit is one or more of an integrated circuit, a transistor, a capacitor, and a light-emitting diode. 11. The active component of claim 6, wherein a surface of the electronic circuit has a dimension from 5 microns to 5000 microns. 12. A wafer comprising: an electronic circuit;connection pads electrically connected to the electronic circuit;an electrically conductive connection post protruding from each of the connection pads and electrically connected to the electronic circuit; anda breakable component tether releasably attaching the electronic circuit to the wafer. 13. The wafer of claim 12, wherein the connection post protruding from each of the connection pads has one or more of a height that is greater than its base width, a base width that is greater than its peak width, and a base area that is greater than its peak area. 14. The wafer of claim 12, wherein a surface of the electronic circuit has a dimension from 5 microns to 5000 microns. 15. A method of making a wafer having transfer-printable active components disposed thereon or therein, comprising: providing a wafer;disposing an electronic circuit in or on the wafer;disposing connection pads in or on the wafer, each of the connection pads electrically connected to the electronic circuit;disposing an electrically conductive connection post protruding from each of the connection pads and electrically connected to the electronic circuit; anddisposing a breakable component tether releasably attaching the electronic structure to the wafer. 16. The method of claim 15, comprising: providing a destination substrate having a receiving surface; andtransfer printing the electronic circuit from the wafer to the receiving surface of the destination substrate. 17. The method of claim 16, comprising coating an adhesive layer on the receiving surface in order to adhere the transfer printed electronic circuit to the destination substrate. 18. The method of claim 16, comprising building up a three-dimensional structure to form the connection post protruding from each of the connection pads. 19. A printed structure comprising: a destination substrate comprising electrical contacts;a circuit structure comprising an electronic circuit, connection pads, and a broken tether, wherein each of the connection pads is electrically connected to the electronic circuit; andan electrically conductive connection post protruding from each of the connection pads and electrically connected to the electronic circuit,wherein the connection post is in electrical contact with, extends into, or extends through an electrical contact of the destination substrate to electrically connect the electrical contact to the connection post. 20. The printed structure of claim 19, wherein the electrical contacts of the destination substrate have a composition softer than that of the connection posts. 21. The printed structure of claim 19, wherein the connection post adheres to the electrical contact of the destination substrate.
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