Invention Grant
- Patent Title: Circuit carrier board and manufacturing method thereof
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Application No.: US16503500Application Date: 2019-07-04
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Publication No.: US11032917B2Publication Date: 2021-06-08
- Inventor: Wei-Ti Lin , Chun-Hsien Chien , Fu-Yang Chen
- Applicant: Unimicron Technology Corp.
- Applicant Address: TW Taoyuan
- Assignee: Unimicron Technology Corp.
- Current Assignee: Unimicron Technology Corp.
- Current Assignee Address: TW Taoyuan
- Agency: JCIPRNET
- Priority: TW107136704 20181018,TW108115660 20190507
- Main IPC: H05K7/10
- IPC: H05K7/10 ; H05K3/46 ; H05K3/00 ; H05K3/40 ; H05K1/11

Abstract:
A circuit carrier board includes a first substrate and a second substrate bonding to the first substrate. The first substrate includes a first circuit layer connecting to a plurality of conductive structure. The conductive structures connect to electronic elements. The second substrate contacts the first circuit layer. The second substrate includes a plurality of stacked dielectric layers, and a plurality of second circuit layers are disposed in the dielectric layers. The bottommost layer of the second circuit layers is exposed outside of the dielectric layers, and the topmost layer of the second circuit layers is electrically connected to the first circuit layer. The conductive structure includes a pad and a conductive via. The pad electrically connects to the first circuit layer. A linewidth of the first circuit layer is smaller than a linewidth of the second circuit layer. A manufacturing method of the circuit carrier board is also provided.
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