Film carrier and laminate type mounting structure using same

Claim 2

A film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; and wherein each of the film carrier members is shaped as a square, and the film carrier members other than the base member are respectively connected to four sides of the base member.

Claim 3

The film carrier claim 1 , wherein the mounting connection part of each of the film carrier members comprises a conductive circuit exposed inside an opening formed in the mounting plane.

Claim 4

The film carrier of claim 1 , wherein the connection part for connection to the external substrate comprises a conductive circuit exposed inside an opening formed in the connection plane.

Claim 5

A film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; and wherein the mounting connection part of each of the film carrier members comprises a conductive circuit exposed inside an opening formed in the mounting plane.

Claim 6

A film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; and wherein the mounting connection part of each of the film carrier members comprises a conductive circuit exposed inside an opening formed in the mounting plane.

Claim 7

The film carrier of claim 4 , wherein the shape of said opening is such that said opening is capable of receiving a semiconductor element to be mounted, and the conductive circuit exposed inside the opening is placed at a position where a direct connection with an electrode of the semiconductor element can be established.

Claim 8

The film carrier of calm 4 , wherein the connection part for connection to the external substrate comprises a conductive circuit exposed inside an opening formed in the connection plane.

Claim 9

The film carrier of calm 4 , wherein the connection part for connection to the external substrate comprises a conductive circuit exposed inside an opening formed in the connection plane.

Claim 10

A film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; and wherein the connection part for connection to the external substrate comprises a conductive circuit exposed inside an opening formed in the connection plane.

Claim 11

A film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; and wherein the connection part for connection to the external substrate comprises a conductive circuit exposed inside an opening formed in the connection plane.

Claim 12

The film carrier of calm 7 , wherein the mounting connection part of each of the film carrier member comprises a conductive circuit exposed inside an opening formed in the mounting plane.

Claim 13

The film carrier of calm 7 , wherein the mounting connection part of each of the film carrier member comprises a conductive circuit exposed inside an opening formed in the mounting plane.

Claim 14

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole; wherein the heat-absorbing plate and the heat-releasing plate are made from a heat conductive plate comprising a part to be the heat-absorbing plate, a part to be the heat-releasing plate and a plate connection part to connect said two plates; and wherein the heat-absorbing plate and the heat-releasing plate are formed in the same number and the heat conductive plate is folded in a channel shape comprising a part to be the heat-absorbing plate, a part to be the heat-releasing plate and the plate connection part.

Claim 15

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole; wherein the heat-absorbing plate and the heat-releasing plate are made from a heat conductive plate comprising a part to be the heat-absorbing plate, a part to be the heat-releasing plate and a plate connection part to connect said two plates; and wherein the heat-absorbing plate and the heat-releasing plate are formed in the same number and the heat conductive plate is folded in a channel shape comprising a part to be the heat-absorbing plate, a part to be the heat-releasing plate and the plate connection part.

Claim 16

The laminate type mounting structure of claim 9 , wherein the film carrier member other than the base member are laminated on one another with mounting planes thereof facing the base member.

Claim 17

The laminate type mounting structure of claim 9 , wherein the entire laminate structure in integrally sealed with a resin, except the connection plane of the base member.

Claim 18

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole; wherein the heat-absorbing plate and the heat-releasing plate are made from a heat conductive plate comprising a part to be the heat-absorbing plate, a part to be the heat-releasing plate and a plate connection part to connect said two plates; and wherein the film carrier is formed by linearly connecting the film carrier members, and the direction from each film carrier member toward the adjacent folding part and the direction from the heat-absorbing plate toward the plate connection part are orthogonal to each other.

Claim 19

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole; wherein the heat-absorbing plate and the heat-releasing plate are made from a heat conductive plate comprising a part to be the heat-absorbing plate, a part to be the heat-releasing plate and a plate connection part to connect said two plates; and wherein the film carrier is formed by linearly connecting the film carrier members, and the direction from each film carrier member toward the adjacent folding part and the direction from the heat-absorbing plate toward the plate connection part are orthogonal to each other.

Claim 20

The laminate type mounting structure of claim 12 , wherein the film carrier members other than the base member are laminated on one another with mounting planes thereof facing the base member.

Claim 21

The laminate type mounting structure of claim 12 , wherein the entire laminate structure is integrally sealed with a resin, except the connection plane of the base member.

Claim 22

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein each of the film carrier members is shaped as a square, and the film carrier members other than the base member are respectively connected to four sides of the base member; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 23

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein each of the film carrier members is shaped as a square, and the film carrier members other than the base member are respectively connected to four sides of the base member; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 24

The laminate type mounting structure of claim 15 , wherein the film carrier members other than the base member are laminated on one another with mounting planes thereof facing the base member.

Claim 25

The laminate type mounting structure of claim 15 , wherein the entire laminate structure is integrally sealed with a resin, except the connection plane of the base member.

Claim 26

The laminate type mounting structure of claim 15 , wherein a heat conductive heat-absorbing plate is sandwiched at least between two layers from among the layers of the laminate structure, and a heat conductive heat-releasing plate is set on the uppermost plane of the laminate structure, said heat-absorbing plate and heat-releasing plate being connected to each other in a heat conductive manner.

Claim 27

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein the mounting connection part of each of the film carrier members comprises a conductive circuit exposed inside an opening formed in the mounting planes; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 28

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein the mounting connection part of each of the film carrier members comprises a conductive circuit exposed inside an opening formed in the mounting planes; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 29

The laminate type mounting structure of claim 19 , wherein the film carrier members other than the base member are laminated on one another with mounting planes thereof facing the base member.

Claim 30

The laminate type mounting structure of claim 19 , wherein the entire laminate structure is integrally sealed with a resin, except the connection plane of the base member.

Claim 31

The laminate type mounting structure of claim 19 , wherein a heat conductive heat-absorbing plate is sandwiched at least between two layers from among the layers of the laminate structure, and a heat conductive heat-releasing plate is set on the uppermost plane of the laminate structure, said heat-absorbing plate and heat-releasing plate being connected to each other in a heat conductive manner.

Claim 32

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein the mounting connection part of each of the film carrier members comprises a conductive circuit exposed inside an opening formed in the mounting plane; wherein the shape of said opening is such that said opening is capable of receiving a semiconductor element to be mounted, and the conductive circuit exposed inside the opening is placed at a position where a direct connection with an electrode of the semiconductor element can be established; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 33

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein the mounting connection part of each of the film carrier members comprises a conductive circuit exposed inside an opening formed in the mounting plane; wherein the shape of said opening is such that said opening is capable of receiving a semiconductor element to be mounted, and the conductive circuit exposed inside the opening is placed at a position where a direct connection with an electrode of the semiconductor element can be established; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 34

The laminate type mounting structure of claim 23 , wherein the film carrier members other than the base member are laminated on one another with mounting planes thereof facing the base member.

Claim 35

The laminate type mounting structure of claim 23 , wherein the entire laminate structure is integrally sealed with a resin, except the connection plane of the base member.

Claim 36

The laminate type mounting structure of claim 23 wherein a heat conductive heat-absorbing plate is sandwiched at least between two layers from among the layers of the laminate structure, and a heat conductive heat-releasing plate is set on the uppermost plane of the laminate structure, said heat-absorbing plate and heat-releasing plate being connected to each other in a heat conductive manner.

Claim 37

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein the connection part for connection to the external substrate comprises a conductive circuit exposed inside an opening formed in the connection plane; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 38

A laminate type mounting structure including a film carrier, said film carrier comprising a plurality of generally planar film carrier members that are connected, via folding parts, in the direction of an extension of each plane, wherein one of said film carrier members is a base member and the film carrier members other than the base member are laminated on the base member upon folding the film carrier at the folding parts to form a single laminate structure as a whole comprising layers of said film carrier members, said film carrier members having conductive circuits connected to a conductive circuit in the base member through inside portions of the folding parts, said base member having a mounting plane and a connection plane on the rear surface thereof, and said connection plane having a connection part which is used for connection with an external substrate and which is electrically continuous with the conductive circuit; wherein each of said film carrier members comprises a conductive circuit formed in an insulating substrate, at least one surface of the insulating substrate being a mounting plane on which to mount a semiconductor element, and the mounting plane having a mounting connection part being electrically continuous with the conductive circuit; wherein the connection part for connection to the external substrate comprises a conductive circuit exposed inside an opening formed in the connection plane; and wherein semiconductor elements are mounted on the mounting planes of a plurality of the film carrier members, the film carrier being folded at the folding parts, thereby laminating the film carrier members other than the base member on the base member, so that the connection plane of the base member is the lowermost plane of the laminate structure, thus forming a single laminate structure as a whole.

Claim 39

The laminate type mounting structure of claim 27 , wherein the film carrier members other than the base member are laminated on one another with mounting planes thereof facing the base member.

Claim 40

The laminate type mounting structure of claim 27 , wherein the entire laminate structure is integrally sealed with a resin, except the connection plane of the base member.

Claim 41

The laminate type mounting structure of claim 27 wherein a heat conductive heat-absorbing plate is sandwiched at least between two layers from among the layers of the laminate structure, and a heat conductive heat-releasing plate is set on the uppermost plane of the laminate structure, said heat-absorbing plate and heat-releasing plate being connected to each other in a heat conductive manner.