CN100424844C - Design method for plating of printed circuit board strip and manufacturing method of semiconductor chip package using the same - Google Patents

Design method for plating of printed circuit board strip and manufacturing method of semiconductor chip package using the same Download PDF

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Publication number
CN100424844C
CN100424844C CNB200510099581XA CN200510099581A CN100424844C CN 100424844 C CN100424844 C CN 100424844C CN B200510099581X A CNB200510099581X A CN B200510099581XA CN 200510099581 A CN200510099581 A CN 200510099581A CN 100424844 C CN100424844 C CN 100424844C
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CN
China
Prior art keywords
pcb
copper clad
batten
plating line
component side
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Expired - Fee Related
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CNB200510099581XA
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Chinese (zh)
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CN1763925A (en
Inventor
康太赫
朴相甲
尹光镐
崔凤圭
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Samsung Electro Mechanics Co Ltd
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Samsung Electro Mechanics Co Ltd
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Publication of CN1763925A publication Critical patent/CN1763925A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/103—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by bonding or embedding conductive wires or strips
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/115—Via connections; Lands around holes or via connections
    • H05K1/116—Lands, clearance holes or other lay-out details concerning the surrounding of a via
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0011—Working of insulating substrates or insulating layers
    • H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
    • H05K3/0047—Drilling of holes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341—Surface mounted components
    • H05K3/3431—Leadless components
    • H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/04—Soldering or other types of metallurgic bonding
    • H05K2203/041—Solder preforms in the shape of solder balls

Abstract

The present invention provides a design method for plating of a printed circuit board (PCB) strip, in which a main plating line is optionally formed on a component side, a solder side, or an inner layer of the PCB strip by modifying a sub-plating line of the PCB strip used to manufacture a semiconductor chip package, and a method of manufacturing the semiconductor chip package using the same. Therefore, an excellent semiconductor chip package is manufactured without a short when the PCB strip is cut using a sawing machine because misalignment of main plating lines of the solder side and the component side of the PCB strip is avoided, and an interval between PCB units is reduced to desirably increase the number of PCB units in the PCB strip without the short when the PCB strip is cut.

Description

The manufacture method of printed circuit board (PCB) batten
The application is to be on February 8th, 2003 applying date, and application number is dividing an application of 03103188.9 Chinese patent application.
Technical field
The present invention relates to a kind of manufacture method of printed circuit board (PCB) (PCB) batten (strip) of plating, wherein main plating line (main plating line) be used to make by modification semiconductor die package the PCB batten subordinate plating line (sub-plating line) and be formed on component side, weld side or the bar inner cord of PCB batten and the semiconductor die package that adopts this method to make selectively.
Background technology
In order to realize having the semiconductor chip such as IC (integrated circuit) and LSI (large scale integrated circuit) of high density input and output pin, the PCB batten is applied in the semiconductor die package, the downside that is formed on semiconductor die package as the ball or the pin of input and output means wherein, for example ball grid matrix (ball grid array) encapsulation, pin-grid array (pingrid array) encapsulation and wafer-level package.
With reference to Fig. 1, each a plurality of PCB unit 20 that all has component side and weld side is placed on the PCB batten 10 with the interval of stipulating.For example, 14 PCB unit are placed on the PCB batten of 220mm * 60mm.At this moment, the distance X between the PCB unit is 250 to 350 μ m.
Recently, semiconductor die package has been applied to various electronic products, communication equipment and computer, therefore, makes them have multiple and up-to-date function.In addition, according to the trend of the large-scale production of recent semiconductor die package, produced for reducing interval between the PCB unit with the demand of the quantity that is increased in the PCB unit on the PCB batten as shown in Figure 2.
With reference to accompanying drawing 2, the interval Y between the PCB unit is about 180 μ m, is shorter than the interval X among Fig. 1.But, need high-tech to reduce interval between the PCB unit, and when the improved PCB batten that has reduced when the interval between the PCB unit is divided into single PCB unit, because short decrease (short) can take place in component side and weld side not alignment (misalignment) in printed circuit pattern, therefore, owing to the increase of the substandard products quantity of semiconductor die package makes productivity ratio reduce, this is that we are undesirable.
The process of traditional manufacturing semiconductor die package comprises: the element by being formed on the PCB batten or the main plating line of weld side are electroplated the part that needs on the PCB batten; At component side semiconductor chip is installed; The structure that obtains is at last carried out line to be connected; Cutting is from the outstanding reed line (reed line) of weld side; The welding weld side; And use sawing machine (sawing machine) that resulting PCB batten is divided into single PCB unit.At this moment, the diameter of sawing machine is about 200 μ m, and the main plating line on weld side cuts the PCB batten.
Under the situation of the PCB of Fig. 1 batten, because the interval between the single PCB unit is wide, on a batten, placed a little P CB unit, so be not topmost, promptly use traditional sawing machine to cut the PCB batten short damage of the printed circuit pattern of component side.But if the interval between the PCB unit is reduced to as shown in Figure 2, when the main plating line 30 that uses traditional sawing machine along weld side cut PCB battens 10, the short damage of circuit just increased, and this is that we are undesirable.
With reference to attached Figure 4 and 5, they are respectively the A part enlarged drawing among Fig. 2, it shows the weld side 12 of PCB batten, wherein the interval between the PCB unit has reduced, in the PCB batten, to have increased the quantity of PCB unit as desired, and the enlarged drawing of the part of the B among another Fig. 3, it shows the component side 14 of the PCB batten among Fig. 2.
In Fig. 4, the first main plating line 30 of the weld side 12 of the soldered ball part 60 that will form soldered ball on it by being connected to the PCB batten has been coated with Au.In addition, the independent soldered ball part 61 that is not connected with the first main plating line 30 or first plating line 32 by the component side among Fig. 5 14 the second main plating line 70 and the position on electroplated corresponding to the via pad (via land) 50 on the copper clad that is positioned at component side 14 (copper-clad) part 40 of soldered ball part 61 separately.
In addition, be positioned on the component side 14 of PCB batten be used for that line connects first connect the finger and divide 81 (bond finger) to be electroplated to go up Au by second plating line 72 that is connected to the second main plating line 70.In addition, connecting the finger separately divides 82 to divide via pad 50 on the copper clad part 40 of 82 position to be electroplated to go up Au by being positioned on the weld side corresponding to connecting the finger separately.
With reference to Fig. 6, the PCB batten of the weld side of component side with Fig. 5 and Fig. 4 is described.At length, Fig. 6 shows the zoomed-in view of PCB batten, and the upside that wherein forms the component side of Fig. 5 overlays on the downside of the weld side that forms Fig. 4.In addition, Fig. 7 shows the schematic diagram of the PCB batten that component side and weld side do not align, Fig. 8 shows the X ray picture of PCB batten, wherein formed not lining up of component side and weld side, and Fig. 9 shows the X ray picture of PCB batten, wherein do not have the problem that component side and weld side are not alignd.
As mentioned above, use the PCB batten of traditional sawing machine along the first main plating line 30 cutting welding of weld side 12.But, when the width of the cutting part 90 of PCB batten is about 200 μ m, and as show end view shown in Figure 7 of the X ray picture of PCB batten and Fig. 8, when using blade, can produce at component side and shortly to decrease 100 along the PCB batten of the first main plating line 30 cutting welding of weld side 12.Therefore, should be avoided in any of component side and weld side does not line up so that the second main plating line 70 of component side completely or partially decreases to avoid the short of printed circuit pattern corresponding to the first main plating line 30 of weld side, as shown in Figure 9.But, do not line up for fear of component side and weld side, need high-caliber technology, and traditional effort does not have enough effects.
Summary of the invention
Therefore, in view of above-mentioned the problems of the prior art, proposed the present invention, and the objective of the invention is for a kind of manufacture method that is used to make the plating of the PCB batten that does not have the short semiconductor die package of decreasing that not lining up when the PCB batten cuts causes owing to weld side and component side is provided.
Another object of the present invention is when one or more internal layers are inserted between the weld side of PCB batten and the component side, avoids weld side and not lining up of component side and the substandard products of minimized produced semiconductor die package by form main plating line selectively on weld side, component side or internal layer.
A further object of the present invention provides a kind of good semiconductor die package and adopts the manufacture method of the plating of PCB batten of the present invention to make the method for this encapsulation.
Above-mentioned purpose can realize by a kind of manufacture method is provided, and this manufacture method is used to have the plating of the PCB batten of a plurality of PCB unit, comprising: form main plating line on any one of weld side between the adjacent PCB unit and component side.In this PCB unit each all comprises semiconductor chip being installed thereon and being had and connects the component side that first copper clad part of first circuitous pattern is divided and constructed in the finger, and has and be used to construct second copper clad part of second circuit figure and be placed in being used on second copper clad part admit the weld side of the soldered ball part of soldered ball thereon.At this moment, first copper clad partly comprises the conductive path pad, and connection finger branch is connected with the first copper clad partial line.In addition, second copper clad partly comprises the conductive path pad, and with on soldered ball fusing and the soldered ball part attached to second copper clad part.
In addition, the invention provides a kind of manufacture method, be used to have the plating of the PCB batten of a plurality of PCB unit, comprising: on any one of weld side, component side and internal layer between the adjacent PCB unit, form main plating line.This PCB unit comprises semiconductor chip being installed thereon and being had and connects the component side that first copper clad part of first circuitous pattern is divided and constructed in the finger, and has and be used to construct second copper clad part of second circuit figure and be placed in being used on second copper clad part admit the weld side of the soldered ball part of soldered ball thereon.At this moment, first copper clad partly comprises the conductive path pad, and connection finger branch is connected with the first copper clad partial line.In addition, second copper clad partly comprises the conductive path pad, and with on soldered ball fusing and the soldered ball part attached to the copper clad part.Described PCB unit also has one or more internal layers, is inserted between component side and the weld side.Internal layer has the boring of the conductive path pad that is connected to the 3rd copper clad part, and the subordinate plating line of the 3rd copper clad that is connected thereto part.
In addition, the invention provides a kind of manufacture method of semiconductor die package, comprising: the batten with component side and weld side is provided; At low temperatures described batten is carried out etching partially of short time, so that described batten has uniform etched surfaces and consistent thickness; Etched batten is holed to form a plurality of holes on desirable position on the batten; Level is electroplated the batten of boring; The circuitous pattern of the batten that design is electroplated; The circuitous pattern of printed design is to form the PCB batten on the batten of electroplating; Electroplate the PCB batten with gold; At alignment (routing) on the gold-plated PCB batten on gold-plated PCB batten, to form a plurality of grooves; And detect final PCB batten.
In addition, the invention provides a kind of method of making semiconductor die package, comprise: the printed circuit board (PCB) batten that includes component side and weld side (PCB batten) is provided, have a plurality of printed board units of on the PCB batten, placing (PCB unit), and be formed on the main plating line on weld side or the component side selectively with predetermined distance.At this moment, component side has the connection finger branch that line is connected to first copper clad part of structure first circuitous pattern, and weld side has the second copper clad part of structure second circuit figure.In addition, soldered ball partly is placed on second copper clad part, is used for admitting soldered ball thereon, and with the soldered ball fusing with attached on the soldered ball part.First and second copper clad partly comprise the conductive path pad.This manufacture method also comprises by what main plating line or each via pad were electroplated the soldered ball part of weld side and component side and is connected the finger branch; Chip is installed on the component side on the PCB batten of electroplating and semiconductor chip and PCB batten are carried out line and be connected; Repair the lead-in wire of weld side and wire bonds is arrived weld side; And use sawing machine to cut final PCB batten and do not produce short damage that causes owing to not lining up between weld side and the component side along the main plating line of weld side or component side.
A further object of the present invention provides the manufacture method that is used for the plating of PCB batten by employing and makes the semiconductor die package that the method for semiconductor die package is made.
Description of drawings
Above-mentioned purpose, characteristics and other advantages with other of the present invention will be by becoming more clear below in conjunction with the description of the drawings, wherein:
Fig. 1 shows the schematic diagram of the traditional PCB batten that comprises a plurality of PCB unit of placing with the interval of regulation;
Fig. 2 shows the schematic diagram of the downside (weld side) of PCB batten, and wherein the interval between the PCB unit is reduced expectedly to increase the quantity of the PCB unit in the PCB batten;
Fig. 3 shows the schematic diagram of upside (component side) of the PCB batten of Fig. 2;
Fig. 4 shows the zoomed-in view of A part of weld side of the PCB batten of Fig. 2;
Fig. 5 shows the zoomed-in view of B part of component side of the PCB batten of Fig. 3;
Fig. 6 shows the zoomed-in view of PCB, and wherein the upside (component side) of the PCB batten among Fig. 5 overlays on the downside (weld side) of PCB batten of Fig. 4;
Fig. 7 shows the side schematic view of the PCB batten that component side and weld side do not align;
Fig. 8 shows the X ray picture of PCB batten, has wherein formed not lining up of component side and weld side;
Fig. 9 shows the X ray picture of PCB batten, does not wherein have the problem that does not line up of component side and weld side;
Figure 10 shows the zoomed-in view of the component side of PCB batten according to an embodiment of the invention;
Figure 11 shows the zoomed-in view of the weld side of PCB batten according to an embodiment of the invention;
Figure 12 shows the side schematic view of the PCB batten of Figure 10 and 11;
Figure 13 shows the zoomed-in view of the component side of PCB batten according to another embodiment of the present invention;
Figure 14 shows the zoomed-in view of the weld side of PCB batten according to another embodiment of the present invention;
Figure 15 shows the side schematic view of the PCB batten of Figure 13 and 14;
Figure 16 and 18 shows the zoomed-in view of internal layer of the PCB batten of the main plating line of formation of the present invention;
Figure 17 and 19 shows the zoomed-in view of the internal layer of the PCB batten of having removed main plating line of the present invention;
Figure 20 and 22 shows the zoomed-in view of component side of the PCB batten of the main plating line of formation of the present invention;
Figure 21 and 23 shows the zoomed-in view of the component side of the PCB batten of having removed main plating line of the present invention;
Figure 24 and 25 shows the figure of weld side that soldered ball partly is connected to the PCB batten of the present invention of subordinate plating line;
Figure 26 shows the part zoomed-in view of the component side of PCB batten of the present invention, and it shows in the process of design subordinate plating line and allows the shared scope of subordinate plating line;
Figure 27 shows the schematic side view of PCB batten, and wherein internal layer has been inserted between component side and the weld side; And
Figure 28 shows semiconductor die package is made in employing according to the manufacture method of the plating of the PCB of being used for batten of the present invention flow chart.
Embodiment
With reference now to accompanying drawing, describe, wherein identical in the accompanying drawings Ref. No. is used for identical or similar element.
Figure 10 shows the subordinate plating line of the component side of PCB batten according to an embodiment of the invention, has wherein removed main plating line, and Figure 11 shows the subordinate plating line of the weld side of PCB batten, wherein shows main plating line.
In PCB batten according to the present invention, the same with traditional PCB batten, a plurality of PCB unit is placed with the interval of regulation.
Each PCB unit comprises component side and weld side.Component side has the copper clad part that is used to construct circuitous pattern, carries out that connection finger that line connects is divided and mounted semiconductor chip thereon thereon.In addition, weld side is the dorsal part of component side, and has the copper clad part that is used to construct circuitous pattern, and the soldered ball part that is used to admit soldered ball.At this moment, with the soldered ball fusing and attached to copper clad soldered ball part partly.As mentioned above, in Figure 10 and 11, main plating line is not formed on component side, and is formed on the weld side.In addition, on each copper clad part, be formed with the conductive path pad.
In Figure 10, contiguous PCB unit links to each other by the subordinate plating line each other.In other words, the subordinate plating line in a PCB unit is not connected to main plating line, but has been connected to the copper clad part, has wherein formed the conductive path pad in another PCB unit.At this moment, preferably, the subordinate plating line is connected to from its nearest copper clad part.
Therefore, soldered ball on weld side is partly electroplated by the main plating line of weld side, the connection finger branch of component side is electroplated by the via pad of weld side, and independent soldered ball is partly electroplated by the via pad of component side, because be different from traditional PCB batten, according to the present invention, main plating line is not formed on the component side of PCB batten.At this moment, the copper clad that is positioned on the outermost limit of PCB batten partly is connected to main plating line.
As Figure 10 and 11, for example, main plating line 30 and via pad 50a that the connection finger of the component side on the PCB batten divides 80a to pass through weld side, and the copper clad part 40a of component side is coated with Au.
In addition, the independent connection finger main plating line 30 and the via pad 50a that divide 80b to pass through weld side electroplated Au.
And the soldered ball part 60b on the weld side of PCB batten passes through the main plating line 30 of weld side by Au, as shown in figure 11.
On the other hand, main plating line 30 and the via pad 50c of independent soldered ball part 60c by weld side, and the copper clad part 40c of component side and 40d are electroplated Au.
Simultaneously, preferably, although not shown in Figure 10 and 11, the copper clad part 13 (as shown in Figure 2) of PCB ragged edge necessarily is connected to main plating line 30.
If the PCB batten is to design according to above-mentioned explanation, the PCB batten is electroplated and as desired when using traditional sawing machine along the main plating line cutting PCB batten of weld side, even main plating line is not formed on component side, and is formed on the weld side, the short damage can not taken place yet.
Those of ordinary skill in the present technique field is appreciated that from Figure 12.Be different from traditional PCB batten shown in Figure 7, PCB batten as shown in figure 12 according to the present invention has the main plating line on weld side, so even adopting width is the sawing machine cutting PCB batten of 200 μ m, at component side short the damage can not taken place yet.
Under the situation of PCB batten of the present invention, even the interval between adjacent PCB unit is reduced to 200 μ m or littler, there be not short the damage in the semiconductor chip of manufacturing yet.
With reference to Figure 13 and 14, main plating line is not formed on the weld side, and is formed on the component side.At this moment, the copper clad part 40 that forms conductive path pad 50 on it is connected on the main plating line by subordinate plating line 72, has therefore realized connecting the finger and has divided 80 electroplating process.
But main plating line is not formed on the weld side, thus form conductive path pad 50 partly be connected to subordinate conductor wire 32 at adjacent PCB unit 12a and the copper clad between the 12b.Therefore, the main plating line 70 of soldered ball 60 by component side, comprise that the copper clad part 40 of conductive path pad 50 and subordinate plating line 32 are electroplated.
In other words, the connection finger that is used for the component side that line connects divides 81 main plating line 70 and the subordinate plating lines 72 that are connected to main plating line 70 by component side to be electroplated and go up Au.In addition, independent connection finger divides 82 the main plating line 70 and via pad 50 corresponding to the copper clad part 40 of weld side 12 of via pad 50 and weld side 12 by component side to be electroplated and go up Au.
In addition, the adjacent PCB unit 12a of the weld side 12 of PCB batten is connected by subordinate plating line 32 with 12b, and the soldered ball part 60 that forms soldered ball on it is gone up Au by electroplating corresponding to the via pad 50 on the copper clad part 40 of the weld side of the via pad 50 of component side on the main plating line 70 of component side 14, the subordinate plating line 72 that is connected to main plating line 70 and the position.In addition, independent soldered ball part 60c is electroplated Au by the via pad 50b and the copper clad part 40b of the main plating line 70 and the subordinate plating line 72 of component side 14, the copper clad part 41 that comprises via pad 51, weld side 12.
If according to above-mentioned explanation design PCB batten, then the PCB batten is electroplated according to expection, and,, can not take place damaged even main plating line is not formed on component side and is formed on the weld side when the main plating line cutting PCB batten that adopts traditional sawing machine along weld side yet.
Those of ordinary skill in the present technique field is appreciated that from Figure 12.Be different from batten traditional among Fig. 7, PCB batten according to the present invention as shown in figure 12 has main plating line in weld side, so even use the traditional sawing machine cutting PCB batten with 200 μ m width, at component side short the damage can not taken place yet.
Under the situation of PCB batten of the present invention, the semiconductor chip of manufacturing does not exist damaged, the described 200 μ m or littler that are spaced apart even the interval of adjacent PCB unit is reduced.
In order to electroplate the PCB batten according to above-mentioned explanation, described PCB batten has element and weld side.
Referring now to Figure 16, the semiconductor die package that is included in the one or more internal layers between component side and the weld side is described, adopt the figure of traditional component side and weld side to be not easy to its design and plating.In other words, internal layer is inserted between component side and the weld side, and the via pad of internal layer 16 can be preferably forms corresponding to component side and weld side, and can be on the position corresponding to any via pad of component side and weld side.
In addition, the invention provides a kind of manufacture method of plating of the PCB batten that is used to have a plurality of PCB unit, comprising: on any one of weld side, component side and internal layer between the adjacent PCB unit, form main plating line.This PCB unit comprises semiconductor chip being installed thereon and being had and connects the component side that first copper clad part of first circuitous pattern is divided and be used to construct in the finger, and has and be used to construct second copper clad part of second circuit figure and be placed in being used on second copper clad part admit the weld side of the soldered ball part of soldered ball thereon.At this moment, first copper clad partly comprises the conductive path pad, and connection finger branch is connected with the first copper clad partial line.In addition, second copper clad partly comprises the conductive path pad, and with the soldered ball fusing and attached to copper clad soldered ball part partly.Described PCB unit also has one or more internal layers, is inserted between component side and the weld side.Internal layer has the boring of the conductive path pad that is connected to the 3rd copper clad part, and the subordinate plating line of the 3rd copper clad that is connected thereto part.
As mentioned above, main plating line 110 can be formed on the internal layer 16 between PCB unit 16a and the 16b, as shown in figure 16, but also can not be formed on the internal layer 16 between PCB unit 16a and the 16b, as shown in figure 17.In Figure 16, internal layer 16 is by main plating line 110, subordinate plating line 130 and comprise that the copper clad part 120 of conductive path pad 122 is electroplated.At this moment, three kinds of situations are arranged: under first kind of situation, main plating line is not formed on component side and the weld side, but on internal layer; Under second kind of situation, main plating line is not formed on component side and the internal layer and is formed on the weld side; And under the third situation, main plating line is not formed on internal layer and the weld side but on component side.Certainly, main plating line is formed on in component side, weld side and the internal layer any one, and the copper clad that is connected to main plating line partly is formed on any one ragged edge in component side, weld side and the internal layer, even one or more internal layer is inserted between component side and the weld side.
When main plating line was formed on any one of component side, weld side and internal layer, the connection finger of component side was divided and the soldered ball of weld side partly is easy to by main plating line, is connected to the subordinate plating line of main plating line and comprises that conductive path pad and each all are formed on Au in the copper clad parcel plating on component side, weld side and the internal layer.
Therefore, main plating line is formed on any one of component side, weld side and internal layer, so the PCB batten is electroplated ideally by main plating line.In addition, when adopting traditional sawing machine along main plating line cutting PCB batten, the short damage can not taken place.
In addition, even the interval between the PCB unit is reduced to 200 μ m or littler, the semiconductor die package of manufacturing is not short yet decreases.
At this moment, electroplating process depends on and where forms main plating line.
With reference to Figure 18, the internal layer PCB unit that is inserted between component side and the weld side is described, wherein main plating line is not formed on element and the weld side.When main plating line 110 was formed between the PCB unit 16a of internal layer and the 16b, subordinate plating line 130 was connected to main plating line 110 with Au in PCB unit 16a and the 16b plating.Especially, the connection finger of component side divide and the soldered ball of weld side partly the copper clad part 122 of the conductive path pad 122 by comprising internal layer electroplated.
On the other hand, Figure 19 shows another embodiment, and it shows the interior PCB unit that is inserted between component side and the weld side, and wherein main plating line is not formed on the internal layer, but on any one of component side or weld side.At this moment, on internal layer, subordinate plating line 130 is connected to copper clad part 120.Especially, thus a plurality of boring 124 is formed in the copper clad part 120 that is connected to subordinate plating line 130 by the via pad or the boring of component side or weld side electroplates the PCB batten.
Figure 20 shows the part zoomed-in view of the component side of PCB batten, and wherein main plating line 70 is formed between PCB unit 14a and the 14b, and Figure 21 shows the part zoomed-in view of the component side of the PCB batten with main plating line 70.When main plating line is not formed between the PCB unit of component side, the PCB batten by subordinate plating line 72 and via pad 50 by adjacent PCB unit being connected to each other and being electroplated.Therefore, in Figure 21, preferably, design subordinate plating line 72a, 72b and 72c are so that be connected to the copper clad part that comprises via pad.
Figure 22 shows the part zoomed-in view of the component side of PCB batten, and wherein main plating line is formed between PCB unit 14a and the 14b, and at this moment, a PCB unit 14a is connected to main plating line 70, and the 2nd PCB unit 14b is not connected to main plating line 70.Therefore, as shown in figure 23, when main plating line is removed between the PCB unit 14a of component side and 14b, the subordinate plating line 72 of the one PCB unit 14a is not connected to the 2nd PCB unit 14b, and therefore such design makes it be connected to the copper clad part 40 of the via pad 50 that comprises a PCB unit 14a.
Figure 24 shows the part zoomed-in view of the weld side of PCB batten, and the soldered ball part 60 that wherein includes only soldered ball is connected to main plating line 30 by subordinate plating line 32 or in the copper clad part of the ragged edge of PCB batten.At this moment, the soldered ball part 60 that is connected to subordinate plating line 32 is electroplated by via pad 50 from the via pad of component side or internal layer.
Figure 25 shows the part zoomed-in view of the weld side of PCB batten, is connected to main plating line 30 by subordinate plating line 32 or in the copper clad part of the ragged edge of PCB batten comprising the copper clad part 40 of the soldered ball part 60 of soldered ball.At this moment, subordinate plating line 32 can be connected to main plating line 30 independently or stretches out in the soldered ball part 60 of the copper clad part of the ragged edge of PCB batten from all.Remainingly can not be connected to main plating line 30 independently or electroplate by the via pad 50 of weld side and the via pad 50 of component side or internal layer in the soldered ball part of the copper clad part of the ragged edge of PCB batten.
Figure 26 shows the part zoomed-in view of the component side of PCB batten, it shows adjacent PCB unit 14a and 14b subordinate plating line 72 connected to one another, and the scope that allows the subordinate plating line to occupy in the process of designing printed circuit figure and subordinate plating line.In other words, reference character M is the upper limit alignment that is used to pull out the subordinate plating line of virtual (Virtual), and reference character N is the lower limit alignment that the subordinate plating line is pulled out in virtual being used to, and reference character O is formed in the main plating line between the PCB unit.The plating line of being pulled out is can not align for fear of the subordinate plating line of component side, weld side and internal layer, distance between main plating line O and upper limit alignment M is in 150 μ m, and the distance between main plating line O and lower limit alignment N is in 150 μ m, thereby set up the zone that is used for pulling out ideally the subordinate plating line.
Figure 27 shows the schematic side view of PCB, and wherein one or more internal layers are inserted between component side 14 and the weld side 12.At this moment, in the main plating line 70,30,110 that is respectively formed on component side 14, weld side 12 and the internal layer any one is formed selectively, therefore, electroplated the PCB batten ideally by main plating line, and avoided short damage the when using traditional sawing machine along main plating line cutting PCB batten.
Figure 28 shows the flow chart of employing according to the manufacturing of the semiconductor packages of the manufacture method that is used to electroplate the PCB batten of the present invention.
As shown in figure 28, at step S1, prepare selectively to comprise the PCB batten of component side and weld side, or further comprise the PCB batten of internal layer.
In step S2, under relatively low temperature, in the short relatively time, etch partially the PCB batten, so that obtain to have the PCB batten of uniform etched surfaces and consistent thickness.
In step S3, etched PCB batten is holed subsequently with a plurality of holes of formation on desirable position, and is electroplated by level in step S4.
On the PCB batten of in step S5, having electroplated, designed circuitous pattern, and in step S6 with graphic printing after.The batten that has printed, and is carried out alignment at step S8 to gold-plated batten subsequently and handles to form a plurality of grooves on gold-plated batten by electric plated with gold subsequently at step S7.
Whether in the step S9 that finishes the semiconductor die package manufacture process, detecting final PCB batten is substandard products with the quality of determining the PCB batten.At this moment, used manufacture method to S7, therefore, reduced the manufacturing of the substandard products of PCB batten significantly according to plating of the present invention PCB batten at step S5.
According to the present invention, a kind of manufacture method of semiconductor die package is provided, comprise: printed circuit board (PCB) batten (PCB batten) is provided, it comprises component side and weld side, has a plurality of at the printed board unit of placing with predetermined distance on the PCB batten (PCB unit) be formed on main plating line on weld side or the component side selectively.At this moment, component side has line and is connected to first copper clad connection finger branch partly that is used to construct first circuitous pattern, and weld side has the second copper clad part that is used to construct the second circuit figure.In addition, soldered ball partly is positioned at second copper clad part admitting soldered ball thereon, and with the soldered ball fusing and attached to the soldered ball part.First and second copper clad partly comprise the conductive path pad.This manufacture method also comprises: be connected the finger branch by what main plating line or each via pad were electroplated the soldered ball part of weld side and component side; Semiconductor chip is installed on the component side of the PCB batten that process is electroplated and the semiconductor chip line is connected to the PCB batten; Repair the lead-in wire of weld side and wire bonds is arrived weld side; And use sawing machine to cut final PCB batten and do not produce short damage that causes owing to not lining up between weld side and the component side along the main plating line of weld side or component side.
In addition, the invention provides a kind of manufacture method of semiconductor die package, comprise: printed circuit board (PCB) batten (PCB batten) is provided, it comprises component side and weld side, have a plurality of printed board units of on the PCB batten, placing (PCB unit) with predetermined distance, one or more internal layers that are inserted between component side and the weld side, and be formed on main plating line on component side, internal layer or the weld side selectively.Component side has the connection finger branch that line is connected to first copper clad part that is used to construct first circuitous pattern, and weld side has and is used to construct second copper clad part of second circuit figure and is positioned at second copper clad part to admit the soldered ball part of soldered ball thereon.In addition, with the soldered ball fusing and attached to the soldered ball part, internal layer has the 3rd copper clad part that is used to construct the tertiary circuit figure, and the 3rd copper clad partly comprises boring and is connected to the subordinate plating line.This manufacture method also comprises: electroplate the soldered ball part of weld side and the connection finger branch of internal layer or component side by main plating line or each via pad; Semiconductor chip is installed on the component side of the PCB batten that process is electroplated and the semiconductor chip line is connected to the PCB batten; Repair the lead-in wire of weld side and wire bonds is arrived weld side; And use sawing machine to cut final PCB batten and do not produce short damage that causes owing to not lining up between weld side and the component side along the main plating line of component side, internal layer or weld side.
And, the invention provides the semiconductor die package that a kind of semiconductor die package manufacture method of manufacture method of the plating that is used for the PCB batten by employing is made.
Therefore, the invention has the advantages that, created a kind of short good semiconductor die package of decreasing that do not exist,, avoided not lining up between the main plating line of the component side of PCB batten and weld side because when adopting sawing machine to cut the PCB batten.Other advantages of the present invention are that the interval between the PCB unit has been reduced, so that the quantity of the PCB unit in the PCB batten has obtained the increase of expection, there be not short the damage in this PCB batten, because avoided not lining up of when cutting PCB batten PCB batten.
Also should be appreciated that, the narration of front only and appending claims, rather than aforesaid explanation restricted portion is relevant, all modifications that is consistent or combines with it with claims, and this meet and therefore the equivalent of combination also drops in claims.

Claims (2)

1. the manufacture method of a printed circuit board (PCB) batten comprises:
The subordinate plating line is connected to the connection finger branch of component side and the soldered ball part of weld side, between adjacent printed board unit, does not have main plating line;
The subordinate plating line is connected to the copper clad part of the ragged edge of each printed board unit; And
Soldered ball part by subordinate plating line and the copper clad parcel plating weld side that comprises the conductive path pad and component side be connected the finger branch,
Wherein, described each printed board unit comprises:
Component side, allow to install semiconductor chip thereon, and having the first copper clad part that connects the finger branch and be used to construct first circuitous pattern, described first copper clad partly comprises the conductive path pad, and described connection finger separated time is connected to the first copper clad part; And
Weld side, has the second copper clad part that is used to construct the second circuit figure, and the soldered ball part on second copper clad part of being positioned at that is used for admitting soldered ball thereon, described second copper clad partly comprises the conductive path pad, and described soldered ball is melted and is attached to the soldered ball part of second copper clad part.
2. the manufacture method of a printed circuit board (PCB) batten comprises:
The subordinate plating line is connected to the connection finger branch of component side, the soldered ball part of weld side and the copper clad part that comprises conductive path pad and boring of internal layer, between the adjacent printed board unit on component side, weld side and the internal layer, does not have main plating line;
The subordinate plating line is connected to the copper clad part of the ragged edge of each printed board unit; And
Soldered ball part by subordinate plating line and the copper clad parcel plating weld side that comprises the conductive path pad and component side be connected the finger branch,
Wherein, described each printed board unit comprises:
Component side, allow to install semiconductor chip thereon, and having the first copper clad part that connects the finger branch and be used to construct first circuitous pattern, described first copper clad partly comprises the conductive path pad, and described connection finger separated time is connected to the first copper clad part;
Weld side, has the second copper clad part that is used to construct the second circuit figure, and the soldered ball part on second copper clad part of being positioned at that is used for admitting soldered ball thereon, described second copper clad partly comprises the conductive path pad, and described soldered ball is melted and is attached to the soldered ball part of second copper clad part; And
One or more internal layers are inserted between component side and the weld side, and have the boring of the conductive path pad that is connected to the 3rd copper clad part and be connected to the 3rd copper clad subordinate plating line partly.
CNB200510099581XA 2002-02-08 2003-02-08 Design method for plating of printed circuit board strip and manufacturing method of semiconductor chip package using the same Expired - Fee Related CN100424844C (en)

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