CN202307818U - Material tube for loading chip packaging body - Google Patents

Abstract

The utility model relates to a material tube for loading a chip packaging body, wherein the material tube is internally provided with a cavity for containing the packaging body, and the packaging body is loaded in the material tube in a cross section alignment mode. The material tube for loading the chip packaging body is characterized by being widened so as to enable the outer surface of the material tube to act as a horizontal top wall of the placing surface of the material tube, wherein two side walls of the material tube are symmetrically provided with horizontal sunk parts which are sunk toward the cavity; the lower walls of the two horizontal sunk parts are symmetrically and respectively provided with a stop rib extending into the cavity; and the packaging body is clamped between the two stop ribs.

Description

A kind of material pipe that is used to load chip packing-body

Technical field

The utility model relates to a kind of material pipe that is used to load chip packing-body.

Background technology

The IC encapsulation just is meant the circuit pin on the silicon chip, connects with lead and guides to external lug place, so that be connected with other devices, and packing forms is meant the shell that the installation semiconductor integrated circuit chip is used.In the IC encapsulation technology, need require to select packing forms and packaging technology according to the circuit function of different circuit chips.

OCSOP (Open Cover Small Ooutline Package) packing forms is usually used in encapsulated sensor chip 18.The cross section of adopting the chip that this packing forms obtains has been shown in Fig. 1, and wherein 11 for preformed seals formed plastic-sealed body, abbreviates preparatory plastic-sealed body as, and 12 is the outer pin of lead frame, and 13 is lid.Sensor chip generally is placed in the indicated space of arrow 101 among Fig. 1.This packing forms has bossing 102, the special construction requirement that this bossing 102 is sensor chips.

Usually need cut the muscle operation of bending in the general IC encapsulation process later stage, this two procedures is accomplished usually simultaneously.The so-called muscle technology of cutting is meant dykes and dams (dam bar) between the excision frame outer pin and the place that on frame strip, connects together; The so-called technology of bending then is that pin is curved certain shape, to be fit to the needs of assembling.After this, also need on the top surface 103 of packaging body, beat sign indicating number, just on said surface, stamp the letter and the sign of indelible, legibility, comprise the information, country, device code of manufacturer etc., mainly be in order to discern and can to follow the tracks of.The method of beating sign indicating number has multiple, and wherein the most frequently used is the imprinting method, and it comprises two kinds of printing ink imprinting and laser imprintings again.Generally, in present packaging technology, increasing manufacturer selects to use laser to beat the sign indicating number technology, especially in premium quality product.

The chip in package shape that is obtained like this will be installed in the material pipe.Common in the market being used to has been shown in Fig. 2 loaded the cross section of the material pipe that adopts OCSOP packing forms or the chip packing-body similar with it.As can be seen from Figure 2, trapezoidal shape with the level in the middle of existing material tube shape has adopted.Find that in practical application such design has a lot of shortcomings.At first; Because the shape of this kind material pipe is up-small and down-big, make that after the dress feeding pipe packaged chip above-mentioned has letter and the surface of sign and have to by towards held; This will be unfavorable for the visual examination of packaged chip very much, especially under the situation of large-scale production.In addition,, therefore also increased the complexity of the feeding structure of cutting muscle equipment and follow-up Test handler, be unfavorable for very much the steady production of equipment because the cross section of this material pipe is complicated.

Given this, be necessary to design material pipe that a kind of novel being specially adapted for load the packaging body that adopts OCSOP or the packing forms similar with it to avoid above problem.

The utility model content

The material pipe that the purpose of the utility model is to provide the improved chip that is suitable for loading OCSOP or the packing forms similar with it with overcome exist in the above-mentioned prior art, be unfavorable for the defective of producing.

For realizing above-mentioned purpose, the utility model provides a kind of material pipe that is used to load chip packing-body, is provided with the cavity that holds said packaging body in the said material pipe, and the mode that said packaging body is aimed at cross section is loaded in the said material pipe; It is characterized in that said material pipe has and is broadened so that its outer surface can be as the horizontal top wall of the storing face of said material pipe; On two sidewalls of said material pipe, be provided with horizontal recess recessed in cavity symmetrically, on the lower wall of said two horizontal recess, respectively be provided with a stop rib of in cavity, extending symmetrically, said packaging body is fastened between said two stop rib.

Preferably; On the diapire of said material pipe, be provided with vertical recess to the cavity inner process; Said vertical recess has the transparent bottom surface of level, and the bottom surface of said vertical recess is identical with the width of the top surface of said packaging body, and said packaging body frame is held on the said vertical recess.

Preferably, said stop rib is set to vertical with the lower wall of said horizontal recess.

Preferably, the surface that contacts with said packaging body of said stop rib is a vertical plane.

Preferably, the cross section of said stop rib is rectangle.

Preferably, the horizontal width of said stop rib is 0.5 ~ 0.7 mm.

Preferably, the vertical length of said stop rib is 1.8 ~ 2.2 mm.

Preferably, the overall profile of said material pipe is cuboid.

Preferably, the wall thickness of said material pipe is 0.5 ~ 0.7 mm.

Preferably, said packaging body adopts the OCSOP packing forms.

Adopt the material pipe that the utility model provided to overcome the difficulty that large-scale production process chips packaging body sign is checked.In addition, the material pipe that the utility model provided can also be set to have simple on the whole cross sectional shape easily, thereby makes that the location between the equipment that is respectively applied for each production process is convenient and reliable.

Description of drawings

Below will combine accompanying drawing and embodiment, the technical scheme of the utility model is done further to describe in detail.Wherein:

Fig. 1 is the sectional view that adopts the packaging body of OCSOP packing forms;

Fig. 2 is the sectional view that is used to load the material pipe of the packaging body that adopts OCSOP or the packing forms similar with it of the prior art;

Fig. 3 is the sketch map according to the material pipe of an embodiment of the utility model;

Fig. 4 is the sectional view of material pipe shown in Figure 3;

Fig. 5 schematically shows the situation that packaging body shown in Figure 1 places the material pipe of Fig. 3.

Embodiment

For the above-mentioned purpose, the feature and advantage that make the utility model are more obviously understandable, the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.Need to prove that each structure in the accompanying drawing is schematic rather than determinate, so that those of ordinary skills can understand the principle of the utility model best, it is not necessarily drawn in proportion.

Fig. 3 is the sketch map according to the material pipe of an embodiment of the utility model.Generally speaking, the related material pipe of the utility model be used to be loaded in the IC encapsulation cut the muscle operation after be divided into single chip packing-body.Material pipe 300 can whole have transparent material tube wall 301, processes with transparent polyester material as the one of which, checks and discern the sign on the packaging body top surface thereby be convenient to the chip packing-body that the operator is opposite to wherein.The top surface of said packaging body generally is meant this surface of arrow 103 indications among Fig. 1.As mentioning in the background technology, need on the top surface of packaged chip, stamp manufacturer's information, country, device code of indelible, legibility or the like for identification and traceable purpose.

In material pipe, be provided with the cavity 302 that holds said packaging body, be designed to settle packaged chip as the one of which with the mode that the cross section is aimed at.So-called " cross section aligning " is exactly when said packaging body is placed in the material pipe, its cross section and the transverse cross-section parallel of expecting pipe.When packaging body 10 is loaded in the material pipe 300; Its top surface 103 will be in the face of the part of the indicated material pipe diapire of arrow among Fig. 3 303; And the cross section of packaging body 10 shown in Figure 1 will be aimed at that kind that illustrates to meaning property as shown in fig. 5 with the cross section of material pipe 300 shown in Figure 3 thus.Fig. 5 schematically shows the situation that packaging body shown in Figure 1 places the material pipe of Fig. 3.

With the OCSOP packaging body structure of example being used to of specifying that the utility model provided loading the material pipe of chip packing-body with reference to the sectional view of Fig. 4 and material pipe 300 shown in Figure 5 below.As shown in Figure 4, in order to adapt to the bossing of OCSOP encapsulating structure, on the sidewall of material pipe 300 the right and lefts, be provided with horizontal recess recessed in the subtend cavity symmetrically, the with dashed lines circle is indicated as 401 and 402 in Fig. 4.In a preferred embodiment, distance equals the width of the bossing of said OCDIP encapsulating structure substantially between the horizontal recess 401 and 402, thereby has the space that holds this bossing just.

Be different from conventional material pipe; The material pipe 300 that the utility model provided has and is broadened so that its outer surface can be as the horizontal top wall 41 of the storing face of said material pipe; Thereby make that the outer surface of this roof can be as the storing face of material pipe; That is to say that the material pipe can its roof be steadily to place at the end, observe packaging body thereby be convenient to the charge tube diapire.As can be seen from Figure 5, in this case, the top surface of the packaging body that is wherein loaded will correspondingly face up.Thus, the operator will easily see through and see sign and other information on the packaging body towards the individual layer material pipe roof of packaging body top surface.Preferably; Material pipe roof 41 can be broadened to identical substantially with the width of material pipe diapire; And can further whole material pipe be configured to overall profile and be cuboid, thereby make its each outer surface storing face that all can be used as check packaging body from all angles for the operator.The advantage of this design is that its feeding structure that can make front and back operation device therefor is able to simplify, and then makes that the equipment positioning stablity is reliable.

In the preferred embodiment of the utility model; Can also on the diapire of material pipe 300, the vertical recess 403 to the cavity inner process be set; Said vertical recess has the clear bottom 45 of level, and it has and the OCDIP or the similar identical substantially width of top surface of packaging body.When packaging body placed said material pipe, it can be fastened between vertical recess 403 and said two horizontal recess 401 and 402, thereby is fixed that kind that illustrates to meaning property as shown in Figure 5 better.In this case, vertically the clear bottom 45 of recess correspondingly will directly be faced the packaging body top surface.Thus, the operator will more easily locate and observe sign and other information on the packaging body.

Further; As shown in Figure 4; The material pipe 300 that the utility model provided also respectively is provided with a stop rib of in cavity, extending symmetrically on the lower wall of its horizontal recess 401 and 402; Be stop rib 43 and 44, this can hold the packaging body that places the material pipe and manage this packaging body firmly is fixed on material to stop rib.Can find out roughly that from Fig. 5 if material pipe width is too big, then packaged chip will rotate therein, otherwise, if material pipe width is too narrow, then be easy to situation about getting stuck.After in the material pipe, adding stop rib 43 and 44, the outside of packaging body is held, thereby has avoided the rotation of packaging body.Hence one can see that, and the distance certainty between the stop rib 43 and 44 is complementary with the size of the appropriate section of said OCDIP encapsulating structure, otherwise can't play fixation.

In a preferred embodiment; Stop rib 43 and 44 be set to substantially with its attached material tube wall vertical; Be respectively perpendicular to the lower wall of horizontal recess 401 and 402 in the embodiment of Fig. 4; And the surface that contacts with packaging body of stop rib is constructed to vertical plane, as can be from seeing the stereochemical structure of Fig. 3.In certain embodiments, stop rib 43 and 44 cross section are constructed to be rectangle, and be as shown in Figure 4.Under this structure; The horizontal width of each stop rib can be 0.5 ~ 0.7 mm substantially; And vertical length can be 1.8 ~ 2.2 mm substantially, thereby guarantees that packaging body can be fixed, but its too much part is blocked and hinders the operator to check.

In practice, the outer casing thickness of material pipe can be set to 0.5 ~ 0.7 mm substantially, thereby has both guaranteed packaging body that enough transparencies make the operator to see clearly wherein to be loaded.

The material pipe that the utility model provided is used for loading the chip of OCSOP packing forms has overcome many shortcomings that prior art exists; The packaged chip that makes the operator can be opposite to easily wherein carries out visual examination; The complex contour degree of the material pipe docking port of the employed equipment of operation (for example cutting muscle equipment and Test handler) has improved the reliability and stability of device fabrication greatly before and after also having reduced simultaneously.

More than enumerate some specific embodiments and come sets forth in detail the utility model; These a few examples only supply to explain the principle of the utility model and the usefulness of execution mode thereof; But not to the restriction of the utility model; Under the situation of spirit that does not break away from the utility model and scope, those of ordinary skill in the art can also make various distortion and improvement.Therefore all technical schemes that are equal to all should belong to the category of the utility model and limited by each item claim of the utility model.

Claims (10)

1. a material pipe that is used to load chip packing-body is provided with the cavity that holds said packaging body in the said material pipe, and the mode that said packaging body is aimed at cross section is loaded in the said material pipe; It is characterized in that,

Said material pipe has and is broadened so that its outer surface can be as the horizontal top wall of the storing face of said material pipe;

On two sidewalls of said material pipe, be provided with horizontal recess recessed in cavity symmetrically, on the lower wall of said two horizontal recess, respectively be provided with a stop rib of in cavity, extending symmetrically, said packaging body is fastened between said two stop rib.

2. material pipe as claimed in claim 1; It is characterized in that; Wherein on the diapire of said material pipe, be provided with vertical recess to the cavity inner process; Said vertical recess has the transparent bottom surface of level, and the bottom surface of said vertical recess is identical with the width of the top surface of said packaging body, and said packaging body frame is held on the said vertical recess.

3. material pipe as claimed in claim 1 is characterized in that wherein said stop rib is set to vertical with the lower wall of said horizontal recess.

4. material pipe as claimed in claim 4 is characterized in that, the surface that contacts with said packaging body of wherein said stop rib is a vertical plane.

5. material pipe as claimed in claim 1 is characterized in that the cross section of wherein said stop rib is rectangle.

6. material pipe as claimed in claim 5 is characterized in that, the horizontal width of wherein said stop rib is 0.5 ~ 0.7 mm.

7. material pipe as claimed in claim 5 is characterized in that, the vertical length of wherein said stop rib is 1.8 ~ 2.2 mm.

8. material pipe as claimed in claim 1 is characterized in that the overall profile of wherein said material pipe is cuboid.

9. material pipe as claimed in claim 1 is characterized in that, the wall thickness of wherein said material pipe is 0.5 ~ 0.7 mm.

10. like any described material pipe among the claim 1-9, it is characterized in that wherein said packaging body adopts the OCSOP packing forms.

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