Abstract: A circuit board module includes a circuit board and a heat-dissipating device. The circuit board includes a ceramic substrate, and a circuit pattern formed on a surface of the ceramic substrate. The circuit board is sinter-bonded to a main body of the heat-dissipating device. A method of making the circuit board module is also disclosed.

Abstract: A circuit board module includes a circuit board and a heat-dissipating device. The circuit board includes a ceramic substrate, and a circuit pattern formed on a surface of the ceramic substrate. The circuit board is sinter-bonded to a main body of the heat-dissipating device. A method of making the circuit board module is also disclosed.

Abstract: A circuit board module includes a circuit board and a heat-dissipating device. The circuit board includes a ceramic substrate, and a circuit pattern formed on a surface of the ceramic substrate. The circuit board is sinter-bonded to a main body of the heat-dissipating device. A method of making the circuit board module is also disclosed.

Abstract: A packaging substrate device includes: a first laminate including a first ceramic substrate and a first copper pattern disposed on an upper surface of the first ceramic substrate; and a second laminate disposed over the first copper pattern and including a second ceramic substrate, a second copper pattern that is disposed on an upper surface of the second ceramic substrate, and a through hole extending through the second ceramic substrate and the second copper pattern to expose a copper portion of the first copper pattern. A light emitting semiconductor die can be mounted on the copper portion within the through hole. Efficient heat dissipation can be achieved through the first laminate.

Abstract: A method for making a packaging device for an electronic element includes: preparing a ceramic frame body defined with a hollow space for receiving the electronic element therein; preparing a ceramic substrate having a copper layer formed thereon; etching the copper layer to form a predetermined copper pattern on an upper surface of the ceramic substrate; placing the ceramic frame body onto the upper surface of the ceramic substrate and in contact with the copper pattern; and heating the ceramic frame body and the ceramic substrate such that the copper pattern bonds the ceramic frame body to the ceramic substrate. A packaging device for an electronic element is also disclosed.

Abstract: A circuit board module includes a circuit board and a heat-dissipating device. The circuit board includes a ceramic substrate, and a circuit pattern formed on a surface of the ceramic substrate. The circuit board is sinter-bonded to a main body of the heat-dissipating device. A method of making the circuit board module is also disclosed.

Abstract: A packaging substrate device includes: a first laminate including a first ceramic substrate and a first copper pattern disposed on an upper surface of the first ceramic substrate; and a second laminate disposed over the first copper pattern and including a second ceramic substrate, a second copper pattern that is disposed on an upper surface of the second ceramic substrate, and a through hole extending through the second ceramic substrate and the second copper pattern to expose a copper portion of the first copper pattern. A light emitting semiconductor die can be mounted on the copper portion within the through hole. Efficient heat dissipation can be achieved through the first laminate.

Abstract: A method for making a printed circuit board includes: (a) preparing a laminate having a ceramic substrate, first and second metal foils disposed on two opposite surfaces of the ceramic substrate, and a through hole extending through the ceramic substrate and the first and second metal foils; (b) filling the through hole with a metal paste such that the metal paste is in contact with the first and second metal foils; and (c) sintering the metal paste and the laminate such that the metal paste is connected electrically to the first and second metal foils. A printed circuit board made according to the method is also disclosed.

Abstract: A method for making a packaging device for an electronic element includes: preparing a ceramic frame body defined with a hollow space for receiving the electronic element therein; preparing a ceramic substrate having a copper layer formed thereon; etching the copper layer to form a predetermined copper pattern on an upper surface of the ceramic substrate; placing the ceramic frame body onto the upper surface of the ceramic substrate and in contact with the copper pattern ; and heating the ceramic frame body and the ceramic substrate such that the copper pattern bonds the ceramic frame body to the ceramic substrate. A packaging device for an electronic element is also disclosed.

Abstract: A ceramic-copper foil bonding method includes wet-oxidizing a copper foil such that a surface of the copper foil is oxidized to a copper oxide layer, contacting the copper oxide layer with a surface of a ceramic substrate, and bonding the copper oxide layer of the copper foil to the surface of the ceramic substrate by heat treatment. Preferably, a protective layer is provided on an opposite surface of the copper foil so that the opposite surface is not oxidized during wet-oxidizing the copper foil.