Invention Grant
- Patent Title: Manufacturing method for multi-layer circuit board
- Patent Title (中): 多层电路板的制造方法
-
Application No.: US14073873Application Date: 2013-11-07
-
Publication No.: US09288917B2Publication Date: 2016-03-15
- Inventor: Pei-Chang Huang , Cheng-Po Yu , Han-Pei Huang
- Applicant: Unimicron Technology Corp.
- Applicant Address: TW Taoyuan
- Assignee: Unimicron Technology Corp.
- Current Assignee: Unimicron Technology Corp.
- Current Assignee Address: TW Taoyuan
- Agency: Jianq Chyun IP Office
- Main IPC: H05K3/46
- IPC: H05K3/46 ; H05K1/02

Abstract:
A manufacturing method for a multi-layer circuit board includes the following steps. Firstly, a substrate having two surfaces opposite to each other and a via connecting there between is provided. Next, a patterned circuit layer is formed on each of the surfaces by using the via as an alignment target. Each patterned circuit layer includes a concentric-circle pattern. Next, a first stacking layer is formed on each of the surfaces. Then, a first through hole penetrating regions of the first stacking layer and the substrate where a first concentric circle from the center of the concentric-circle pattern is orthogonally projected thereon is formed. Next, a second stacking layer is formed on each first stacking layer. Afterward, a second through hole penetrating regions of the first, the second stacking layers and the substrate where a second concentric circle from the center of the concentric-circle pattern is orthogonally projected thereon is formed.
Public/Granted literature
- US20150121694A1 MANUFACTURING METHOD FOR MULTI-LAYER CIRCUIT BOARD Public/Granted day:2015-05-07
Information query