CN2569340Y

CN2569340Y - Crystal coated chip

Info

Publication number: CN2569340Y
Application number: CN 02236949
Authority: CN
Inventors: 许志行
Original assignee: Via Technologies Inc
Current assignee: Via Technologies Inc
Priority date: 2002-06-05
Filing date: 2002-06-05
Publication date: 2003-08-27
Anticipated expiration: 2012-06-05

Abstract

The utility model relates to a crystal coated chip, wherein, the crystal coated chip is provided with a plurality of core power supplies/earthing welding pads, at least one signal welding pad ring, at least one power supply welding pad ring, and at least one earthing welding pad ring, which are arranged on the active surface of the crystal coated chip. The core power supplies/earthing welding pads are used as centers by the welding pad rings, and the welding pad rings are distributed on the peripheries of the core power supplies/earthing welding pads in the concentric ring mode. In addition, conductor layers which are arranged on the topmost layer of a crystal coated packaging substrate are provided with a plurality of lug cushions, the positions of which respectively correspond to the positions of the welding pads of the crystal coated chip. The periphery of each of the signal lug pad rings is provided with a non-signal lug pad ring. Any conductor layer of the crystal coated packaging substrate can be provided with a pair of power supply traces or earthing traces, which are respectively arranged on both sides of a signal trace and are served as protection traces of the signal trace.

Description

Crystal covered chip

Technical field

The utility model relates to a kind of crystal covered chip and crystal covered package substrate, and particularly relevant for a kind of crystal covered chip with a plurality of weld pad rings, and a kind of crystal covered package substrate that has a plurality of projection gasket rings corresponding to above-mentioned crystal covered chip.

Background technology

Chip bonding technology (Flip Chip, FC) be a kind of common chip size packages (Chip Scale Package that is applied to, CSP) chip encapsulation technology, it mainly is the arrangement mode that utilizes face matrix (Area Array), with a plurality of weld pads (die pad) design configurations of chip (die) in the active surface (active surface) of chip, it is the one side with driving component (activedevice) of chip, and on each weld pad, form projection (bump) respectively, then again the projection on the chip is connected to carrier (carrier) and goes up pairing contact (contact), make chip be engaged to the surface of carrier with the mode correspondence of overturning (flip).

Because the chip bonding technology has the package area of dwindling, improve packaging density, and shorten advantage such as signal transmission path, make the chip bonding technology be widely used in the Chip Packaging field, the chip-packaging structure that particularly has high pin position (High Pin Count), for example with chip bonding (FC) collocation ball lattice array (Ball Grid Array, BGA) the Chip Packaging kenel of covering geode lattice array (FCBGA), or with chip bonding (FC) collocation pin lattice array (PinGrid Array, PGA) Chip Packaging kenel all can be encapsulated single chip that has up to hundreds of weld pads effectively.

No matter be above-mentioned to cover geode lattice array (FCBGA), cover brilliant pin lattice array (FCPGA), or other is applied to the chip encapsulation technology of chip bonding (FC), normally utilize crystal covered package substrate (substrate) to be used as the carrier that chip bonding is used, and the crystal covered package substrate that chip bonding is used (hereinafter to be referred as substrate) is mainly by multi-layered patterned conductor layer and interlaced being formed by stacking of multilayer dielectric layer, and run through above-mentioned insulating barrier respectively with a plurality of conductive plungers, in order to electrically connect above-mentioned adjacent conductor layer.In addition, the end face of substrate more disposes a plurality of bump pads (bump pad), in order to connect the projection on the chip, the bottom surface of substrate then is equipped with a plurality of solder ball pads (ball pad), and it is respectively via the internal wiring of substrate, and winds the line to the solder ball pad of the bottom surface of substrate, and can on solder ball pad, set soldered ball conductive structures such as (ball) respectively, in order to be connected to the electronic installation of next level (next level), for example printed circuit board (PCB) (PrintedCircuit Board, PCB) etc.

Please refer to Fig. 1, it is the partial cutaway diagrammatic sketch of known a kind of composite packing structure.Mode with the face matrix on the active surface 12 of chip 10 disposes a plurality of weld pads 14, crystal covered package substrate 20 (hereinafter to be referred as substrate 20) then is (as assembly label 24a, 24b, 24c by multi-layered patterned conductor layer 24 ...) and interlaced being formed by stacking of multilayer dielectric layer 26 (as assembly label 26a, 26b, 26c), and utilize a plurality of conductive plungers (plug) 36 to run through insulating barrier 26 respectively, in order to electrically connect conductive layer 24.Wherein, the kind of conductive plunger 36 includes conducting connector (via) 36a and the logical connector of plating (both has the difference on the size according to the difference of plug process for Plating Through Hole, PTH) 36b.

Please equally with reference to figure 1, the top layer of conductor layer 24 (promptly near the end face 21 of substrate 20) is conductor layer No.1 24a, it has a plurality of bump pads 30, and the position of the corresponding weld pad 14 of the position of bump pads 30 difference, make weld pad 14 can be connected to pairing bump pads 30 on the substrate 20 via projection 16, the circuit that is constituted via conductor layer 24 and conductive plunger 36 again, and with part of solder pads 14 fan-outs (fan out) of chip 10 zone to active surface 12 belows of chip 10.In addition; substrate 20 more includes the welding resisting layer (SolderMask) 28 of a patterning; it is covered on the first insulating barrier 26a and the conductor layer No.1 24a, and exposes a plurality of bump pads 30 of conductor layer No.1 24a simultaneously, in order to the other parts and the first insulating barrier 26a of protection conductor layer No.1 24a.In addition, 22 of the bottom surfaces of substrate 20 have a plurality of solder ball pads 34, and it is in order to connect soldered ball conductive structures such as (not illustrating), in order to be connected to the electronic installation of next level.

Please refer to Fig. 2 A, it is the upward view of the chip of Fig. 1.The active surface 112 of chip 110 is in the mode of face matrix, dispose a plurality of weld pads 114 (as assembly label 114a, 114b, 114c, 114d ...), and according to the difference on the function, weld pad 114 can be divided into signal weld pad (signalpad) 114a, power supply weld pad (power pad) 114b, ground connection weld pad (ground pad) 114c and core (core) power supply/ground connection weld pad 114d, and wherein signal weld pad 114a, power supply weld pad 114b and ground connection weld pad 114c all are positioned at the periphery of core power supply/ground connection weld pad 114d.It should be noted that, because the signal weld pad 114a of known technology, power supply weld pad 114b and ground connection weld pad 114c all are distributed on the active surface 112 of chip 110 brokenly, therefore, original weld pad (not illustrating) on chip 110 is via layer (the Re-Distribution Layer that reroute, RDL) (do not illustrate), and when redistributing active surface 112 in chip 110, with original weld pad of increasing chip 110 relatively line length via the weld pad 114 of coiling after reshuffle, thereby increase the path that signal transmits, and then reduce the electric usefulness (ElectricalPerformance) of chip 110.

Then please refer to Fig. 2 B, it is the partial top view of crystal covered package substrate of the chip of corresponding diagram 2A.The end face 121 of crystal covered package substrate 120 is distributed with a plurality of bump pads 130 (as assembly label 130a, 130b, 130c, 130d ...), and whole bump pads 130 all is disposed within the chip area 140 of crystal covered package substrate 120, and the weld pad 114 on the chip 110 of corresponding diagram 2A, and be the mode arranged distribution of face matrix.In addition, signal weld pad 114a, power supply weld pad 114b, ground connection weld pad 114c and core power supply/ground connection weld pad 114d for the chip 110 of corresponding connection layout 2A, more the bump pads 130 of substrate 120 can be divided into signal bump pads 130a, power supply bump pads 130b, ground connection bump pads 130c and core power supply/ground connection bump pads 130d, wherein signal bump pads 130a, power supply bump pads 130b and ground connection bump pads 130c all are positioned at the periphery of core power supply/ground connection weld pad 130d.It should be noted that, be distributed on the active surface 112 of chip 110 because signal weld pad 114a, the power supply weld pad 114b of known technology and ground connection weld pad 114c be all irregular, shown in Fig. 2 A, make the end face 121 that signal bump pads 130a, power supply bump pads 130b on the substrate 120 and ground connection bump pads 130c also are distributed in correspondence substrate 120 brokenly.

The utility model content

First purpose of the present utility model is to propose a kind of crystal covered chip, winding length in order to the internal wiring that shortens crystal covered chip, winding length with the reconfiguration line layer that shortens crystal covered chip, and then the electric usefulness of raising chip, and power supply weld pad and ground connection weld pad can be designed concentrated the distribution respectively, except the wiring that helps chip, also can make the power supply and the ground connection of signal institute reference on the same group comparatively average, so can improve the electric usefulness of chip equally.

Second purpose of the present utility model is to propose a kind of crystal covered package substrate, its bump pads position is the bond pad locations of the crystal covered chip of corresponding first purpose respectively, and correspondence designs concentrated the distribution respectively with power supply bump pads and ground connection bump pads equally, so help the wiring of substrate, and can the both sides that trace (guard trace) be equipped on signal traces will be protected, in order to avoiding the phenomenon of signal traces and adjacent other signal traces generation cross-talk (cross-talk), and then improve the electric usefulness of chip.

Based on above-mentioned first purpose of the present utility model, the utility model proposes a kind of crystal covered chip, it has an active surface, and crystal covered chip also has a plurality of core power supplys/ground connection weld pad, at least one signal weld pad ring, at least one power supply weld pad ring and at least one ground connection weld pad ring, all be disposed on the active surface, wherein signal weld pad ring, power supply weld pad ring and ground connection weld pad ring are the center with these core power supply/ground connection weld pads, and are the periphery that concentric annular is distributed in these core power supply/ground connection weld pads.

Based on above-mentioned second purpose of the present utility model, the utility model also proposes a kind of crystal covered package substrate, it has a plurality of conductor layers, it is overlapped in regular turn, a plurality of insulating barriers, it is disposed at respectively between the two adjacent conductive layers, in order to these conductor layers of electrical isolation, and it is interlaced superimposed with these conductor layers, and a plurality of conductive plungers, run through these insulating barriers respectively, in order to electrically connect these conductive layers, wherein the top layer of these conductor layers has a plurality of core power supplys/ground connection bump pads, at least one signal projection gasket ring, at least one power supply projection gasket ring and at least one ground connection projection gasket ring, signal projection gasket ring wherein, power supply projection gasket ring and ground connection projection gasket ring are the center with these core power supply/ground connection bump pads, and are the periphery that concentric annular is distributed in these core power supply/ground connection bump pads.

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended icon, described in detail.

Description of drawings

Fig. 1 is the partial cutaway diagrammatic sketch of known a kind of composite packing structure;

Fig. 2 A is the upward view of the chip of Fig. 1;

Fig. 2 B is the partial top view of crystal covered package substrate of the chip of corresponding diagram 2A;

Fig. 3 A, Fig. 3 C, Fig. 3 E, Fig. 3 G, Fig. 3 I, Fig. 3 K and Fig. 3 M are the upward view of a kind of chip of preferred embodiment of the present utility model;

Fig. 3 B, Fig. 3 D, Fig. 3 F, Fig. 3 H, Fig. 3 J, Fig. 3 L, Fig. 3 N are respectively the partial top view of crystal covered package substrate of the chip of corresponding diagram 3A, Fig. 3 C, Fig. 3 E, Fig. 3 G, Fig. 3 I, Fig. 3 K and Fig. 3 M;

Fig. 4 A is the crystal covered package substrate of Fig. 3 B, the partial schematic diagram of its conductor layer No.1; And

Fig. 4 B is the crystal covered package substrate of Fig. 3 B, the partial schematic diagram of its second conductor layer.

Graphic sign explanation

10: chip 12: active surface

14: weld pad 16: projection

20: crystal covered package substrate 21: end face

22: bottom surface 24,24a～24c: conductor layer

26,26a～26c: insulating barrier 28: welding resisting layer

30: bump pads 32: the connector pad

34: solder ball pad 36: conductive plunger

36a: conducting connector 36b: the logical connector of plating

110: chip 112: active surface

114,114a～114d: weld pad 120: crystal covered package substrate

121: end face 130,130a～130d: bump pads

150: chip area 210: chip

212: active surface 214,214a～214d: weld pad

215,215a～215f: weld pad ring 220: crystal covered package substrate

221: end face 230,230a～230d: bump pads

231,231a～231f: projection gasket ring 250: chip area

324a: conductor layer No.1 324b: second conductor layer

330: bump pads 331,331a～331f: the projection gasket ring

332: connector pad 333,331a～331f: the projection gasket ring

336: conductive plunger 340,342: conductive trace

340a, 342a: ground connection trace 340b, 342b: signal traces

350: chip area

Embodiment

Preferred embodiment

Please refer to Fig. 3 A, it is the upward view of a kind of chip of preferred embodiment of the present utility model.The active surface 212 of chip 210 is equipped with a plurality of weld pads 214 (as assembly label 214a, 214b, 214c, 214d in the mode of face matrix ...), and form a plurality of weld pad rings 215.In addition, difference according to function, also weld pad 214 can be divided into signal weld pad 214a, power supply weld pad 214b, ground connection weld pad 214c and core power supply/ground connection weld pad 214d, wherein signal weld pad 214a, power supply weld pad 214b and ground connection weld pad 214c are the center with core power supply/ground connection weld pad 214 all, and are distributed in the periphery of core power supply/ground connection weld pad 214d.It should be noted that, the signal weld pad ring of being formed by a plurality of weld pads 214 (as the second weld pad ring 215b, the 3rd weld pad ring 215c and the 6th weld pad ring 215f), it is signal weld pad 214a that its weld pad 214 has more than 50 percent, to have more than 90 percent be signal weld pad 214a and preferable situation is the weld pad 214 of signal weld pad ring, and power supply weld pad ring (as the 5th weld pad ring 215e) and ground connection weld pad ring (as the first weld pad ring 215a and the 4th weld pad ring 215d) also are like this.In addition, signal weld pad ring can be made up of the weld pad 214 of individual layer, bilayer, three layers or multilayer annular arrangement, for example the second weld pad ring 215b of Fig. 3 A and the 3rd weld pad ring 215c can be considered same signal weld pad ring, and similarly, power supply weld pad ring and ground connection weld pad ring also are like this.

Please be equally with reference to figure 3A, multi-turn weld pad ring 215 is the active surface 212 of concentric annular arranged distribution in chip 210, all can be set at signal weld pad ring, power supply weld pad ring and ground connection weld pad ring respectively and respectively enclose weld pad ring 215.Chip 210 with Fig. 3 A is an example, chip 210 has three signal weld pad rings (as the second weld pad ring 215b, the 3rd weld pad ring 215c and the 6th weld pad ring 215f), a power supply weld pad ring (as the 5th weld pad ring 215e) and two ground connection weld pad rings (as the first weld pad ring 215a and the 4th weld pad ring 215d), wherein the arrangement mode of the multi-turn weld pad ring 215 of the chip 210 of Fig. 3 A only is one of the mode of the arrangement of numerous concentric annular, and the mode that other concentric annular is arranged is shown in the chip 210 of Fig. 3 C, Fig. 3 E, Fig. 3 G, Fig. 3 I, Fig. 3 K and Fig. 3 M.Yet the weld pad ring 215 of the multi-turn difference in functionality of chip 210 of the present utility model is not limited to the mode of the concentric annular arrangement of Fig. 3 A, Fig. 3 C, Fig. 3 E, Fig. 3 G, Fig. 3 I, Fig. 3 K and Fig. 3 M, also can be the mode that other concentric annular is arranged.It should be noted that preferred embodiment of the present utility model can be designed to power supply weld pad ring or ground connection weld pad ring with the 6th weld pad ring 215f of outmost turns, its main purpose is to allow signal that preferable screen-wall effect (Shielding) can be arranged when lead transmits.

Please be equally with reference to figure 3A, preferred embodiment of the present utility model rearranges the weld pad 214 of a plurality of identical functions the weld pad ring 215 of same function jointly, and the power supply weld pad 214b of power supply weld pad ring 215e can be electrically connected mutually via coiling, also the ground connection weld pad 514b of ground connection weld pad ring 215a (or ground connection weld pad ring 215d) can be electrically connected mutually via coiling, make that the power supply weld pad 214b and the ground connection weld pad 214c of the reference of each signal weld pad 214a institute will be comparatively average, so help to improve the electric usefulness of chip.

Please also refer to Fig. 1, Fig. 3 B, wherein Fig. 3 B is the partial top view of crystal covered package substrate of the chip of corresponding diagram 3A.Shown in Fig. 3 B, crystal covered package substrate 220 (hereinafter to be referred as substrate 220) by the multi-layer conductor leads layer 24 of the patterning of Fig. 1 (as assembly label 24a, 24b, 24c ...) and multilayer dielectric layer 26 (as assembly label 26a, 26b, 26c ...) constitute, wherein these conductor layers 24 are overlapped in regular turn, these insulating barriers 26 then lay respectively between the two adjacent conductor layers 24, in order to these conductor layers 24 of electrical isolation, and interlaced superimposed with these conductor layers 24.In addition, substrate 220 also has the conductive plunger 36 of a plurality of Fig. 1, and for example connector (PTH) 36b is led in conducting connector (via) 36a and plating, and it runs through the insulating barrier 26 of Fig. 1 respectively, in order to two of electric connection Fig. 1 adjacent conductor layers 24.

Please equally with reference to figure 1, Fig. 3 B, shown in Fig. 3 B, a plurality of bump pads 230 on the end face 221 of substrate 220 (as assembly label 230a, 230b, 230c ...), it is the bump pads 30 of Fig. 1, its conductor layer No.1 24a by Fig. 1 is constituted, wherein conductor layer No.1 24a is the top layer of these conductor layers 24, promptly near the conductor layer 24 of the end face 221 of substrate 220.Then as shown in Figure 1, the distributing position of bump pads 30 is the distributing position of corresponding weld pad 14 respectively, make weld pad 14 can be connected to pairing bump pads 30 on the substrate 20 via projection 16, again via conductive structures such as conductor layer 24 and conductive plungers 36, and the part of solder pads 14 of chip 10 is fanned out to zone beyond active surface 12 belows of chip 10.

Please more equally with reference to figure 1, Fig. 3 B, distributing position for a plurality of weld pads 214 of the chip 210 that meets Fig. 3 A, so the bump pads 230 of substrate 220 too in the mode of face matrix, is distributed within the chip area 250 of end face 221 of substrate 220, and forms a plurality of projection gasket rings 231.In addition, signal weld pad 214a, power supply weld pad 214b, ground connection weld pad 214c according to bump pads 230 Fig. 3 A that is connected to, also bump pads 130 can be divided into signal bump pads 230a, power supply bump pads 230b, ground connection bump pads 230c and core power supply/ground connection bump pads 230d, wherein signal bump pads 230a, power supply bump pads 230b and ground connection bump pads 230c be all with core power supply/ground connection bump pads 230d, and be distributed in the periphery of core power supply/ground connection bump pads 230d.It should be noted that, the signal projection gasket ring of being formed by a plurality of bump pads 230 (as the second projection gasket ring 231b, the 3rd projection gasket ring 231c and the 6th projection gasket ring 231f), it is signal bump pads 230a that its bump pads 230 has more than 50 percent, to have more than 90 percent be signal bump pads 230a and preferable situation is the bump pads 230 of signal projection gasket ring, and power supply projection gasket ring (as the 5th projection gasket ring 231e) and ground connection projection gasket ring (as the first projection gasket ring 231a and the 4th projection gasket ring 231d) also are like this.In addition, but the signal weld pad ring of the chip of signal projection gasket ring corresponding diagram 3A, can be formed by the bump pads 230 of individual layer, bilayer, three layers or multilayer annular arrangement, for example the second projection gasket ring 231b of Fig. 3 B and the 3rd projection gasket ring 231c can be considered same signal projection gasket ring, and power supply projection gasket ring and ground connection projection gasket ring also are like this.

Please be equally with reference to figure 3B, the arrangement mode of the multi-turn projection gasket ring 231 of substrate 220 only is one of mode of numerous concentric annular arrangements, and the arrangement mode of other concentric annular also can be shown in Fig. 3 D, Fig. 3 F, Fig. 3 H, Fig. 3 J, Fig. 3 L and Fig. 3 N.Yet, the multi-turn projection gasket ring 215 of substrate 220 of the present utility model is not limited to the mode of the concentric annular arrangement of Fig. 3 B, Fig. 3 D, Fig. 3 F, Fig. 3 H, Fig. 3 J, Fig. 3 L and Fig. 3 N, also can distinguish the mode of distribution of the weld pad 214 of corresponding chip 210, and the mode of arranging for other concentric annular.

Please in regular turn with reference to figure 4A, Fig. 4 B, it is respectively the crystal covered package substrate of Fig. 3 B, the partial schematic diagram of its conductor layer No.1 and second conductor layer.Shown in Fig. 4 A, conductor layer No.1 324a (being the conductor layer No.1 24a of Fig. 1) has a plurality of bump pads 330 (being the bump pads 30 of Fig. 1), and with its mode of arranging with concentric annular, divide into multi-turn projection gasket ring 331, be the multi-turn projection gasket ring 231 shown in Fig. 3 B, wherein Fig. 4 A only illustrates the partial structurtes of multi-turn projection gasket ring 331, and bump pads 330 all is positioned within the chip area 350 (being the chip area 250 of Fig. 3 B).It should be noted that, if six circle projection gasket rings 231 with the crystal covered package substrate 220 of Fig. 3 B are example, the six circle projection gasket rings 331 of Fig. 4 B are ground connection projection gasket ring 331a, signal projection gasket ring 331b, signal projection gasket ring 331c, ground connection projection gasket ring 331d, power supply projection gasket ring 331e and signal projection gasket ring 331f in regular turn.

Shown in Fig. 4 B, the second conductor layer 324b (as the second conductor layer 24b of Fig. 1) has a plurality of connector pads (via pad) 332 (as the connector pad 32 of Fig. 1), it all is positioned within the chip area 350 (being the chip area 250 of Fig. 3 B), wherein the bump pads 330 of the conductor layer No.1 324a of Fig. 4 A is respectively via conductive plunger 336 (being the conducting connector 36a of Fig. 1), and electrically connects mutually with the connector pad 332 of the second conductor layer 324b of Fig. 4 B.Similarly, a plurality of connector pads 332 of the second conductor layer 324b also constitute a plurality of connector gasket rings 333, it corresponds respectively to signal projection gasket ring 331a, power supply projection gasket ring 331b and the ground connection projection gasket ring 331c of conductor layer No.1 324a, and is signal plug gasket ring 333a, power supply connector gasket ring 333b and ground connection connector gasket ring 333c.

Please more in regular turn with reference to figure 4A, Fig. 4 B, shown in Fig. 4 A, many the conductive traces 340 of conductor layer No.1 324a are with outer three circle projection gasket rings 231, comprise ground connection projection gasket ring 231f, signal projection gasket ring 231e, the bump pads 230 of signal projection gasket ring 231d fans out to respectively outside the chip area 350, and interior three circle projection gasket rings 231 comprise ground connection projection gasket ring 231c, 230 of the part bump pads of power supply projection gasket ring 231b and signal projection gasket ring 231a are respectively earlier via conductive plunger 336, and be electrically connected to its interior three circle ground connection connector gasket ring 333c of second conductor layer 300 of Fig. 4 B downwards, the connector pad 332 of power supply connector gasket ring 333b and signal plug gasket ring 333a fans out to respectively outside the chip area 350 via the connector pad 332 of conductive trace 342 with ground connection connector gasket ring 333c and signal plug gasket ring 333a again.

Shown in Fig. 4 A, the conductive trace 340 that is connected from the bump pads 330 of ground connection projection gasket ring 331f is as ground connection trace 340a, from the bump pads 330 of signal projection gasket ring 331d or signal projection gasket ring 331e to connect the conductive trace 340 that then be as signal traces 340b, in order to prevent to take place between signal traces 340b and adjacent other signal traces 340b phenomenon of cross-talk (cross-talk), it is the phenomenon of signal phase mutual interference, therefore, preferred embodiment of the present utility model is the both sides that paired ground connection trace 340a (non-signal traces) are equipped on the signal traces 340b of desire protection respectively, in order to protection trace as signal traces 340b, in addition, the paired power trace (not illustrating) that is connected to power end also can be used as the protection trace of signal traces 340b.In addition, folded signal traces 340b can be more than one or several between the paired ground connection trace 340a, shown in Fig. 4 A.

Shown in Fig. 4 B, the conductive trace 342 (being ground connection trace 342a) that is connected in the connector pad 332 of ground connection connector gasket ring 333c in pairs can be disposed the both sides of the conductive trace 342 (being signal traces 342b) that is positioned at the connector pad 332 that connects signal plug gasket ring 333a equally respectively, be that a pair of ground connection trace 340a can dispose the both sides that are positioned at least one signal traces 340b respectively, in order to protection trace, can prevent to take place between signal traces 342b and contiguous other signal traces 342b phenomenon of cross-talk as signal traces 304b.Similarly, the paired conductive trace 342 that is connected to power end also can be used as the protection trace of signal traces 342b.It should be noted that the width as the ground connection trace 342a that protects trace can so will help to reduce the resistance value of ground connection trace 342a greater than the width of signal traces 342b.Similarly, shown in Fig. 4 A, also can be as the width of the ground connection trace 340a that protects trace greater than the width of signal traces 340a, the resistance value that help to reduce ground connection trace 340a too like this.

In sum, crystal covered chip of the present utility model is the weld pad grouping with difference in functionality on the chip, and the mode of utilizing many rings to arrange respectively, weld pad is disposed at respectively on the active surface of chip, with the winding length of the reconfiguration line layer that shortens chip, and then improve the electric usefulness of chip.In addition, the utility model is also designed a crystal covered package substrate, the pad layout of the crystal covered chip that it is can be corresponding above-mentioned, and be distributed with the bump pads of a plurality of arranged in the top side configuration of substrate, and make the bump pads of most of identical function consist of same projection gasket ring, in addition, also paired power trace or ground connection trace can be equipped on the both sides of signal traces respectively, in order to protection trace as signal traces, thereby reduce the phenomenon that cross-talk takes place between itself and the contiguous signal traces, to improve the electric usefulness of chip.

Though the utility model discloses as above with a preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection range of the present utility model is as the criterion when looking the accompanying Claim person of defining.

Claims

1. crystal covered chip, it is characterized in that: this crystal covered chip has an active surface, and this crystal covered chip also has a plurality of core power supplys/ground connection weld pad, at least one signal weld pad ring, at least one power supply weld pad ring and at least one ground connection weld pad ring, all be disposed on this active surface, wherein this signal weld pad ring, this power supply weld pad ring and this ground connection weld pad ring are the center with these core power supply/ground connection weld pads, and are the periphery that concentric annular is distributed in these core power supply/ground connection weld pads.

2. crystal covered chip as claimed in claim 1 is characterized in that: this signal weld pad ring is made up of a plurality of weld pad, and these weld pads more than 50 percent are the signal weld pad.

3. crystal covered chip as claimed in claim 1 is characterized in that: this signal weld pad ring is made up of a plurality of weld pad, and these weld pads are the multilayer annular arrangement.

4. crystal covered chip as claimed in claim 1 is characterized in that: this power supply weld pad ring is made up of a plurality of weld pad, and these weld pads more than 50 percent are the power supply weld pad.

5. crystal covered chip as claimed in claim 1 is characterized in that: this power supply weld pad ring is made up of a plurality of weld pad, and these weld pads are the multilayer annular arrangement.

6. crystal covered chip as claimed in claim 1 is characterized in that: this ground connection weld pad ring is made up of a plurality of weld pad, and these weld pads more than 50 percent are the ground connection weld pad.

7. crystal covered chip as claimed in claim 1 is characterized in that: this ground connection weld pad ring is made up of a plurality of weld pad, and these weld pads are the multilayer annular arrangement.