公开(公告)号：US20150342030A1

公开(公告)日：2015-11-26

申请号：US14717456

申请日：2015-05-20

Applicant: FUJIKURA LTD

Inventor： Hirohito WATANABE ,  Taiji OGAWA

IPC: H05K1/02

CPC classification number: H05K1/0216 ,  H01P3/085 ,  H05K1/0225 ,  H05K1/0237 ,  H05K1/025 ,  H05K1/0393 ,  H05K2201/0715 ,  H05K2201/09027 ,  H05K2201/09681 ,  H05K2201/09727

Abstract: To suppress occurrence of a difference in transmission time due to a difference in length between signal lines, there is provided a printed wiring board having: an insulating substrate (10); a first signal line (L31A) that constitutes differential signal lines formed on the insulating substrate (10) and includes a curved portion; a second signal line (L31B) provided along the first signal line (L31A) and side by side inside the curved portion; and a ground layer (30) formed for the first signal line (L31A) and the second signal line (L31B) via an insulating material (10). The ground layer (30) includes a first ground layer (G31A) corresponding to a first region (D1) and a second ground layer (G31B) corresponding to a second region (D2). The first region (D1) is defined based on the first signal line (L31A) and has a first predetermined width (W31A). The second region (D2) is defined based on the second signal line (L31B) and has a second predetermined width (W31B). The first ground layer (G31A) has a remaining ratio lower than a remaining ratio of the second ground layer (G31B).

Abstract translation: 为了抑制由于信号线之间的长度差导致的传输时间差的发生，提供了一种印刷线路板，其具有：绝缘基板（10）; 第一信号线（L31A），其构成形成在绝缘基板（10）上并包括弯曲部分的差分信号线; 沿着第一信号线（L31A）设置并并列在弯曲部分内的第二信号线（L31B）; 以及经由绝缘材料（10）为第一信号线（L31A）和第二信号线（L31B）形成的接地层（30）。 接地层（30）包括对应于第一区域（D1）的第一接地层（G31A）和对应于第二区域（D2）的第二接地层（G31B）。 第一区域（D1）基于第一信号线（L31A）定义并具有第一预定宽度（W31A）。 第二区域（D2）基于第二信号线（L31B）被定义并且具有第二预定宽度（W31B）。 第一接地层（G31A）的剩余比率比第二接地层（G31B）的剩余率低。

公开(公告)号：US20150340751A1

公开(公告)日：2015-11-26

申请号：US14717280

申请日：2015-05-20

Applicant: FUJIKURA LTD.

Inventor： Hirohito WATANABE ,  Taiji OGAWA

IPC: H05K1/02 ,  H01P3/08 ,  H01P1/02

CPC classification number: H05K1/0225 ,  H01P1/022 ,  H01P3/08 ,  H01P3/085 ,  H05K1/025 ,  H05K1/0393 ,  H05K2201/0715 ,  H05K2201/09027 ,  H05K2201/09681 ,  H05K2201/09727

Abstract: To suppress occurrence of a difference in transmission time due to a difference in length between signal lines, there is provided a printed wiring board having: an insulating substrate (10); a first signal line (L31) formed on the insulating substrate (10); a second signal line (L32) having a shorter length than that of the first signal line (L31); and a ground layer (30) formed for the first signal line (L31) and the second signal line (L31) via an insulating material (10). The ground layer (30) includes a first ground layer (G31) corresponding to a first region (D1) and a second ground layer (G32) corresponding to a second region (D2). The first region (D1) is defined based on the first signal line (L31) and has a first predetermined width (W31). The second region (D2) is defined based on the second signal line (L32) and has a second predetermined width (W32). The first ground layer (G31) has a remaining ratio lower than a remaining ratio of the second ground layer (G32).

Abstract translation: 为了抑制由于信号线之间的长度差导致的传输时间差的发生，提供了一种印刷线路板，其具有：绝缘基板（10）; 形成在所述绝缘基板（10）上的第一信号线（L31）。 具有比第一信号线（L31）短的长度的第二信号线（L32）; 和经由绝缘材料（10）形成的第一信号线（L31）和第二信号线（L31）的接地层（30）。 接地层（30）包括对应于第一区域（D1）的第一接地层（G31）和对应于第二区域（D2）的第二接地层（G32）。 第一区域（D1）基于第一信号线（L31）定义并具有第一预定宽度（W31）。 第二区域（D2）基于第二信号线（L32）定义并具有第二预定宽度（W32）。 第一接地层（G31）的剩余比率比第二接地层（G32）的剩余率低。