CN201556499U

CN201556499U - Laminated electronic element

Info

Publication number: CN201556499U
Application number: CN2009201297490U
Authority: CN
Inventors: 郭海; 曾向东; 刘先忺
Original assignee: Shenzhen Sunlord Electronics Co Ltd
Current assignee: Shenzhen Sunlord Electronics Co Ltd
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2010-08-18
Anticipated expiration: 2019-01-21

Abstract

The utility model provides a laminated electronic element which comprises an insulating casing (100), an electronic device (200), an internal electrode lead-out end (300) and an external electrode (400), wherein the electronic device (200) is sealed in the insulating casing (100) and is electrically connected with the internal electrode lead-out end (300) through an internal electrode (210), the external electrode (400) is arranged on an end surface (110) of the insulating casing (100) and is electrically connected with the internal electrode lead-out end (300), the cross section of the insulating casing (100) is a polygon, and the internal electrode lead-out end (300) exposes from at least two top points on the lateral surface of the insulating casing (100) so as to be electrically connected with the external electrode (400). The laminated electronic element has the advantages of saving pole pulp, and has stable structure since the exposing points are arranged on a plurality of top points of the cross section of the insulating casing, and the reliability of electric connection is high.

Description

A kind of laminated electronic element

Technical field

The utility model relates to a kind of laminated electronic element, relates in particular to a kind of laminated inductive.

Background technology

Laminated electronic element, for example laminated inductance, transformer, filter, magnetic bead etc. need be by exit with internal electrode and outer electrode conductings.Be example explanation exit designing technique in the past now with laminated chip inductor.

Structure with common laminated inductance describes.The internal electrode that the coiled coiled type is arranged in the multi-layered ceramic body, the exit of Inside coil electrode afterbody, and for end face and the end face peripheral side formed outer electrode of exit conducting at the multi-layered ceramic body.The multi-layered ceramic body is that the mode by lamination is shaped to base substrate, and exit is exposed at base substrate both sides tip position after the moulding, and blank sintering is ceramic body.On the termination of ceramic body and termination peripheral side, form outer electrode.Exit by outer electrode and Inside coil electrode carries out conducting, forms laminated chip inductor.The exit that is exposed to laminated ceramic body peripheral side has thus just carried out conducting with outer electrode.

Yet the thickness of electrode of common exit is thin partially, often only is emerging in the peripheral side of laminated ceramic body, and when the laminated ceramic body of sintering, the exposure portion of exit also has part and ablates.To have a strong impact on the conducting of Inside coil electrode and outer electrode like this.In addition, because bending etc. produce when being out of shape, internal stress will take place in laminated inductance when the substrate that posts laminated inductance.Under this internal stress effect, the conducting position of the exit of laminated inductance and outer electrode will be offset, and opening circuit can appear in the conducting connecting portion like this.

In order to overcome the problems referred to above, among the Japan patent of invention JP3731275 a kind of design is proposed, as shown in Figure 9, the exit of Inside coil electrode is exposed on a plurality of sides around the laminated body, with the exit of increase Inside coil electrode and the conducting area of outer electrode.But this structure will expend too much electrode slurry, increase manufacturing cost greatly, and too much use electrode slurry also to be unfavorable for environmental protection.

The utility model content

It is reliable that technical problem to be solved in the utility model provides a kind of electrical connection of outer electrode, environmental protection more, and lower-cost laminated electronic element.

The purpose of this utility model is achieved through the following technical solutions:

A kind of laminated electronic element comprises: insulation crust, electronic device, internal electrode exit and outer electrode; Described electron device package is electrically connected with described internal electrode exit by internal electrode in described insulation crust; Described outer electrode is arranged on the end of described insulation crust, and is electrically connected with described internal electrode exit; The cross section of described insulation crust is a polygon; Described internal electrode exit is exposed by the place, at least two summits of insulation crust side, to be electrically connected with described outer electrode.

Wherein, alleged polygon also comprises as the formed shape of level and smooth closed curve in the utility model, then can regard as to be poor polygon polygon, and a bit can think this polygonal summit arbitrarily on this closed curve.

In order further to improve the reliability that is electrically connected between internal electrode exit and the outer electrode, described internal electrode exit comprises: at least two close end faces of drawing that are parallel to each other; Close described the drawing between the end face that be parallel to each other is electrically connected, and exposes the formation contact point at the place, at least two summits in described insulation crust cross section; Described outer electrode extends to the side of described insulation crust, to be electrically connected with described contact point.

As a kind of embodiment of the present utility model, the cross section of described insulation crust is a rectangle.Furthermore, it can select following mode to carry out being electrically connected between portion's electrode leads to client and the outer electrode.

The described end face of drawing exposes at the relative place, two summits in described insulation crust cross section, to be electrically connected with described outer electrode.

Described contact point of drawing end face exposes at the adjacent place, two summits in described insulation crust cross section, to be electrically connected with described outer electrode.

Described contact point of drawing end face exposes at the place, three summits in described insulation crust cross section, to be electrically connected with described outer electrode.

Described contact point of drawing end face exposes at the place, four summits in described insulation crust cross section, to be electrically connected with described outer electrode.

As the utility model embodiment more specifically, described electronic device is an inductance; Described insulation crust is the multi-layered ceramic body.

Advantage compared with prior art of the present utility model is that the internal electrode exit only is to contact with the external electric limit, has saved electrode slurry, and locates its Stability Analysis of Structures, the reliability height of electrical connection because it exposes a little on a plurality of summits in insulation crust cross section.

Description of drawings

Fig. 1 is the internal structure schematic diagram of the utility model laminated electronic element embodiment;

Fig. 2 is the external structure schematic diagram of the utility model laminated electronic element embodiment;

Fig. 3 is first kind of electric connection structure schematic diagram of the utility model embodiment;

Fig. 4 is second kind of electric connection structure schematic diagram of the utility model embodiment;

Fig. 5 is the structural representation of first kind of embodiment of the utility model internal electrode exit;

Fig. 6 is the structural representation of second kind of embodiment of the utility model internal electrode exit;

Fig. 7 is the structural representation of the third embodiment of the utility model internal electrode exit;

Fig. 8 is the structural representation of the 4th kind of embodiment of the utility model internal electrode exit;

Fig. 9 is the structural representation of a kind of laminated inductive in the prior art.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and preferred embodiment.

As depicted in figs. 1 and 2, laminated electronic element is a kind of laminated inductive, makes with the multi-layered ceramic sintering, and its insulation crust 100 is a cube type ceramic body.Outer electrode 400 is encapsulated in the end face 110 at the two ends of stating insulation crust 100, and extends to its side, is electrically connected with internal electrode exit 300.

In described insulation crust 100 inside, electronic device 200 is the coil that is connected by internal electrode 210, and inner electrode 210 laminations of coil that invest ceramic idiosome connect to form inductance.At the two ends of described electronic device 200, be internal electrode exit 300.Described internal electrode exit 300 is by being abutted against mutually and forming by the end face 310 of drawing that described internal electrode 210 is electrically connected, expose in the place, summit in described insulation crust 100 cross sections at described contact point 311 of drawing on the end face 310, to be electrically connected with outer electrode 400.

As shown in Figure 3, outer electrode 400 is encapsulated in the end face 110 at the two ends of stating insulation crust 100, and extends to its side, is electrically connected with internal electrode exit 300.And a described internal electrode exit 300 is only drawn end face 310 by one and is formed.

As shown in Figure 4, different with Fig. 3 is that a described internal electrode exit 300 is made up of a plurality of end faces 310 of drawing.

As Fig. 5, Fig. 6, Fig. 7 and shown in Figure 8, the cross section of described insulation crust 100 is a rectangle.Wherein, described structure of drawing end face 310 can be chosen as following mode:

First kind of mode: the described end face 310 of drawing exposes at the relative place, two summits in described insulation crust 100 cross sections, to be electrically connected with described outer electrode 400.

The second way: described described contact point 311 of drawing end face 310 exposes at the adjacent place, two summits in described insulation crust 100 cross sections, to be electrically connected with described outer electrode 400.

The third mode: described described contact point 311 of drawing end face 310 exposes at the place, three summits in described insulation crust 100 cross sections, to be electrically connected with described outer electrode 400.

The 4th kind of mode: described described contact point 311 of drawing end face 310 exposes at the place, four summits in described insulation crust 100 cross sections, to be electrically connected with described outer electrode 400.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.

Claims

1. a laminated electronic element comprises: insulation crust (100), electronic device (200), internal electrode exit (300) and outer electrode (400); Described electronic device (200) is encapsulated in the described insulation crust (100), is electrically connected with described internal electrode exit (300) by internal electrode (210); Described outer electrode (400) is arranged on the end face (110) of described insulation crust (100) and locates, and is electrically connected with described internal electrode exit (300); It is characterized in that the cross section of described insulation crust (100) is a polygon; Described internal electrode exit (300) is exposed by the place, at least two summits of insulation crust (100) side, to be electrically connected with described outer electrode (400).

2. laminated electronic element as claimed in claim 1 is characterized in that, described internal electrode exit (300) comprising: at least two close end faces (310) of drawing that are parallel to each other; Close described the drawing between the end face (310) that be parallel to each other is electrically connected, and exposes formation contact point (311) at the place, at least two summits in described insulation crust (100) cross section; Described outer electrode (400) extends to the side of described insulation crust (100), to be electrically connected with described contact point (311).

3. laminated electronic element as claimed in claim 1 or 2 is characterized in that, the cross section of described insulation crust (100) is a rectangle.

4. laminated electronic element as claimed in claim 3 is characterized in that, draws end face (310) and exposes at the relative place, two summits in described insulation crust (100) cross section, to be electrically connected with described outer electrode (400).

5. laminated electronic element as claimed in claim 3, it is characterized in that, described described contact point (311) of drawing end face (310) exposes at the adjacent place, two summits in described insulation crust (100) cross section, to be electrically connected with described outer electrode (400).

6. laminated electronic element as claimed in claim 3 is characterized in that, described described contact point (311) of drawing end face (310) exposes at the place, three summits in described insulation crust (100) cross section, to be electrically connected with described outer electrode (400).

7. laminated electronic element as claimed in claim 3 is characterized in that, described described contact point (311) of drawing end face (310) exposes at the place, four summits in described insulation crust (100) cross section, to be electrically connected with described outer electrode (400).

8. laminated electronic element as claimed in claim 1 is characterized in that, described electronic device (200) is an inductance; Described insulation crust (100) is the multi-layered ceramic body.