Stereoscopic electronic circuit device, and relay board and relay frame used therein

Abstract

A stereoscopically connected structure is made up of a first circuit board and a second circuit board which are mounted with other electronic components, and a relay board having a recess which is mounted with an electronic component and is provided with a lead-out wiring extending from the electronic component, and also having a land part to be connected with the lead-out wiring on one of the surfaces of the relay board that face the first circuit board and second circuit board. Thus the relay board can mount the electronic component thereon as well as connect the first circuit board and the second circuit board, thereby achieving high density mounting.

1 . A stereoscopic electronic circuit device, comprising:
 a first circuit board;   a second circuit board;   a relay frame provided between the first circuit board and the second circuit board, wherein   the relay frame has an electronic component mounted on a side surface thereof and a lead-out wiring extending from the electronic component, and also has a land part for connecting the lead-out wiring with one of the first circuit board and the second circuit board on one of surfaces that face the first circuit board and the second circuit board; and   the first circuit board and the second circuit board are connected with each other three-dimensionally via the land part of the relay frame.   
   
   
       2 . The stereoscopic electronic circuit device according to  claim 1 , wherein
 an outer surface of the relay frame has a shield electrode formed thereon.   
   
   
       3 . The stereoscopic electronic circuit device according to  claim 1 , wherein
 the first circuit board has a first shield conductor thereon, the second circuit board has a second shield conductor thereon, and the relay frame has a third shield conductor on an outer surface thereof, and   the first shield conductor, the second shield conductor and the third shield conductor are connected with each other.   
   
   
       4 . The stereoscopic electronic circuit device according to  claim 1 , wherein
 the relay frame has an inductor or a loop antenna on a side surface thereof.   
   
   
       5 . The stereoscopic electronic circuit device according to  claim 1 , wherein
 the relay frame has a board interconnection on a side surface thereof, and also has a board connection land to be connected with the board interconnection on the surfaces that face the first circuit board and the second circuit board.   
   
   
       6 . The stereoscopic electronic circuit device according to  claim 5 , wherein
 the board interconnection is made up of a via hole penetrating the surfaces of the relay frame that face the first circuit board and the second circuit board.   
   
   
       7 . The stereoscopic electronic circuit device according to  claim 1 , wherein
 at least one of the first circuit board and the second circuit board is mounted with an other electronic component.   
   
   
       8 . A relay frame comprising:
 an electronic component mounted on at least one side surface of the relay frame and a lead-out wiring extending from the electronic component; and   a land part for being connected with the lead-out wiring to be connected with an other circuit board on the surface of the relay frame that faces the other circuit board.   
   
   
       9 . The relay frame according to  claim 8 , wherein
 the at least one side surface is mounted with a plurality of electronic components.   
   
   
       10 . The relay frame according to  claim 8 , wherein
 a side surface of the relay frame has one of a shield electrode and a third shield conductor formed thereon.   
   
   
       11 . The relay frame according to  claim 8 , wherein
 the relay frame has a board interconnection on a side surface thereof, and also has a board connection land to be connected with the board interconnection on the surface of the relay board that faces the other circuit board.   
   
   
       12 . The relay frame according to  claim 11 , wherein
 the board interconnection is made up of a via hole penetrating the surface of the relay frame that faces the other circuit board.   
   
   
       13 . The stereoscopic electronic circuit device according to  claim 1 , wherein
 at least one of the first circuit board and the second circuit board is a flexible circuit board.