Adapter board and manufacturing method therefor, and board card connecting structure
View Patent ↗An adapter board includes a main body. Perforations are provided in a top face of the main body and configured to be in plug-in fit with a plug of the connector. Pads are provided on a bottom face of the main body and configured to be soldered to the board card. Row numbers r and column numbers n of the perforations and the pads are the same, and the perforations correspond to the pads on a one-to-one basis. The main body further includes a line passing area located between two adjacent columns of pads. A column spacing of the perforations is P, and a column spacing of the pads on two sides of the line passing area is M, where M−P≥H, and H is a minimum spacing allowed between adjacent differential lines of the board card.
1. An adapter board, configured to realize adaptation between a connector ( 5 ) and a board card ( 6 ), comprising a main body ( 1 ), wherein perforations ( 2 ) are provided in a top face of the main body ( 1 ), and the perforations ( 2 ) are configured to be in plug-in fit with a plug of the connector ( 5 ); pads ( 3 ) are provided on a bottom face of the main body ( 1 ), and the pads ( 3 ) are configured to be soldered to the board card ( 6 ); row numbers, represented by r, and column numbers, represented by n, of the perforations ( 2 ) and the pads ( 3 ) are the same, and the perforations ( 2 ) have a one-by-one correspondence with the pads ( 3 ); the main body ( 1 ) further comprises a line passing area located between two adjacent columns of pads ( 3 ); and a column spacing of the perforations ( 2 ) in the top face of the main body ( 1 ) is represented by P, and a column spacing of the pads ( 3 ) on two sides of the line passing area is represented by M, wherein M−P>H, and H represents a minimum spacing allowed between adjacent differential lines ( 7 ) of the board card ( 6 ).
2. The adapter board according to claim 1 , wherein under a circumstance that the board card ( 6 ) performs one-way outgoing, a required number of routing layers represented by Y, Y=(r−1)/(2x−1), wherein x=M/P, Y≥1, and the number is rounded up.
3. The adapter board according to claim 1 , wherein under a circumstance that the board card ( 6 ) performs two-way outgoing, a required number of routing layers represented by Y, Y=(r−2)/2*(2x−1), wherein x=M/P, Y≥1, and the number is rounded up.
4. The adapter board according to claim 1 , wherein M≥r*H.
5. The adapter board according to claim 1 , wherein the row numbers and column numbers of the perforations ( 2 ) and the pads ( 3 ) are both even numbers, wherein M≥(r/2+1) H.
6. The adapter board according to claim 1 , wherein the row numbers and column numbers of the perforations ( 2 ) and the pads ( 3 ) are both even numbers, wherein M≥r/2*H.
7. The adapter board according to claim 1 , wherein the column spacing between two middle columns of pads ( 3 ) is represented by P, the perforations ( 2 ) in a first side of a boundary between the two middle columns of pads ( 3 ) perform outgoing away from the boundary, and the perforations ( 2 ) in a second side of the boundary perform outgoing away from the boundary.
8. The adapter board according to claim 1 , wherein the column spacing between two middle columns of pads ( 3 ) is represented by M, and the perforations ( 2 ) in all columns perform outgoing to one side.
9. The adapter board according to claim 7 , wherein the number of layers of the adapter board is represented by L, two middle columns of perforations ( 2 ) are perforations ( 2 ) in column n/2 and perforations ( 2 ) in column n/2+1 respectively, the perforations ( 2 ) in column n/2 and the perforations ( 2 ) in column n/2+1 are through holes, the perforations ( 2 ) in columns smaller than n/2 perform leftward outgoing, and the perforations ( 2 ) in columns greater than n/2+1 perform rightward outgoing, wherein lines outgoing from different columns of perforations ( 2 ) in the same side of the two middle columns of perforations ( 2 ) are located in different layers.
10. The adapter board according to claim 9 , wherein along a direction away from the perforations ( 2 ) in column n/2, after an outgoing distance of the perforations in column n/2-t (t=1, 2, 3, . . . , n/2−1) at layer L−2t is represented by t*P, the outgoing lines are connected to the pads on a bottom layer, when t=n/2-1, after an outgoing distance of the perforations at layer 2 is represented by (n/2−1)*P, the outgoing lines are connected to the bottom layer.
11. The adapter board according to claim 10 , wherein under a circumstance that lateral outgoing lines interfere with the perforations ( 2 ), the perforations ( 2 ) are treated by a blind buried perforation or broken perforation process.
12. The adapter board according to claim 10 , wherein stubs of the perforations ( 2 ) are treated by a back drilling process for the perforations ( 2 ).
13. The adapter board according to claim 10 , wherein the perforations ( 2 ) connected to the bottom layer form the pads ( 3 ) by electroplating and filling.
14. The adapter board according to claim 10 , wherein a left structure and a right structure of the adapter board are symmetrical about a boundary between the two middle columns of perforations ( 2 ).
15. The adapter board according to claim 1 , wherein a spacing between the adjacent differential lines ( 7 ) is greater than or equal to 1.5 H.
16. A manufacturing method for an adapter board, wherein the adapter board comprises a main body ( 1 ), perforations ( 2 ) are provided in a top face of the main body ( 1 ), and the perforations ( 2 ) are configured to be in plug-in fit with a plug of the connector ( 5 ); pads ( 3 ) are provided on a bottom face of the main body ( 1 ), and the pads ( 3 ) are configured to be soldered to the board card ( 6 ); row numbers, represented by r, and column numbers, represented by n, of the perforations ( 2 ) and the pads ( 3 ) are the same, and the perforations ( 2 ) have a one-by-one correspondence with the pads ( 3 ); the main body ( 1 ) further comprises a line passing area located between two adjacent columns of pads ( 3 ); and a column spacing of the perforations ( 2 ) in the top face of the main body ( 1 ) is represented by P, and a column spacing of the pads ( 3 ) on two sides of the line passing area is represented by M, M-PH, and H represents a minimum spacing allowed between adjacent differential lines ( 7 ) of the board card ( 6 ), wherein the method comprising:
manufacturing a main body ( 1 );
processing perforations ( 2 ) in a top face of the main body ( 1 ), whereby a column spacing of the perforations ( 2 ) in the top face is represented by P; and
processing pads ( 3 ) on a bottom face of the main body ( 1 ), whereby a column spacing of the pads ( 3 ) on two sides of a line passing area of the main body ( 1 ) is represented by M, wherein M-P≥H, H is representing a minimum spacing allowed between adjacent outgoing lines of the board card ( 6 ), row numbers and column numbers of the perforations ( 2 ) and the pads ( 3 ) are the same, and the perforations ( 2 ) have a one-by-one correspondence with the pads ( 3 ).
17. The manufacturing method according to claim 16 , wherein the processing perforations ( 2 ) in a top face of the main body ( 1 ), whereby a column spacing of the perforations ( 2 ) P comprises:
processing through holes in the top face of the main body ( 1 ) according to a preset row spacing, wherein a column spacing between the through holes is represented by P, and the through holes serve as the perforations ( 2 ).
18. The manufacturing method according to claim 17 , wherein the processing pads ( 3 ) on a bottom face of the main body ( 1 ), whereby a column spacing of the pads ( 3 ) on two sides of a line passing area of the main body ( 1 ) is represented by M comprises:
processing the pads ( 3 ) at the bottom of two middle columns of perforations ( 2 );
allowing the perforations ( 2 ) in a first side of a boundary between two middle columns of pads ( 3 ) to perform outgoing away from the boundary, and processing the pads ( 3 ), at the ends of the outgoing lines, on the bottom face of the main body ( 1 ), whereby the pads ( 3 ) are connected to the corresponding outgoing lines and perforations ( 2 ); and
allowing the perforations ( 2 ) in a second side of the boundary to perform outgoing away from the boundary, and processing the pads ( 3 ), at the ends of the outgoing lines, on the bottom face of the main body ( 1 ), whereby the pads ( 3 ) are connected to the corresponding outgoing lines and perforations ( 2 ).
19. The manufacturing method according to claim 18 , wherein the allowing the perforations ( 2 ) in the first side of the boundary to perform outgoing away from the boundary, and processing the pads ( 3 ), at the ends of the outgoing lines, on the bottom face of the main body ( 1 ), whereby the pads ( 3 ) are connected to the corresponding outgoing lines and perforations ( 2 ) comprises:
setting two middle columns of perforations ( 2 ) as perforations ( 2 ) in column n/2 and perforations ( 2 ) in column n/2+1 respectively, wherein the perforations ( 2 ) in column n/2 and the perforations ( 2 ) in column n/2+1 are through holes, the perforations ( 2 ) in columns smaller than n/2 perform leftward outgoing, and the perforations ( 2 ) in columns greater than n/2+1 perform rightward outgoing;
determining a distance of leftward outgoing of the perforations ( 2 ) in column n/2−1 at an outgoing layer that is adjacent to a bottom layer as 1 *P, reaching the perforations ( 2 ) in column n/2−2, and then connecting to the bottom layer through the perforations ( 2 );
determining a distance of leftward outgoing of the perforations ( 2 ) in column n/2−2 at an outgoing layer that is less adjacent to the bottom layer as 2 *P, and then connecting to the bottom layer through the perforations ( 2 );
determining a distance of leftward outgoing of the perforations ( 2 ) in column n/2−3 at an outgoing layer that is further less adjacent to the bottom layer as 3 *P, and then connecting to the bottom layer through the perforations ( 2 );
determining a distance of leftward outgoing of the perforations ( 2 ) in column n/2-t at an outgoing layer that is further less adjacent to the bottom layer as t*P, and then connecting to the bottom layer through the perforations ( 2 ), wherein t=1, 2, 3, . . . , n/2−1;
and so on, determining a distance of leftward outgoing of the perforations ( 2 ) in column 1 as (n/2−1)*P, and then connecting to the bottom layer through the perforations ( 2 ).
20. A board card connecting structure, comprising a connector ( 5 ) and a board card ( 6 ), further comprising an adapter board ( 4 ), wherein the adapter board comprises a main body ( 1 ), perforations ( 2 ) are provided in a top face of the main body ( 1 ), and the perforations ( 2 ) are configured to be in plug-in fit with a plug of the connector ( 5 ); pads ( 3 ) are provided on a bottom face of the main body ( 1 ), and the pads ( 3 ) are configured to be soldered to the board card ( 6 ); row numbers, represented by r, and column numbers, represented by n, of the perforations ( 2 ) and the pads ( 3 ) are the same, and the perforations ( 2 ) have a one-by-one correspondence with the pads ( 3 ); the main body ( 1 ) further comprises a line passing area located between two adjacent columns of pads ( 3 ); and a column spacing of the perforations ( 2 ) in the top face of the main body ( 1 ) is represented by P, and a column spacing of the pads ( 3 ) on two sides of the line passing area is represented by M, M−P>H, and H represents a minimum spacing allowed between adjacent differential lines ( 7 ) of the board card ( 6 ), wherein the adapter board ( 4 ) is connected between the connector ( 5 ) and the board card ( 6 ), a plug of the connector ( 5 ) is in plug-in fit with perforations ( 2 ) in a top face of the adapter board ( 4 ), and pads ( 3 ) on a bottom face of the adapter board ( 4 ) are soldered to the board card ( 6 ).