CN107241862A - Circuit board - Google Patents

Circuit board Download PDF

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Publication number
CN107241862A
CN107241862A CN201710584291.7A CN201710584291A CN107241862A CN 107241862 A CN107241862 A CN 107241862A CN 201710584291 A CN201710584291 A CN 201710584291A CN 107241862 A CN107241862 A CN 107241862A
Authority
CN
China
Prior art keywords
dielectric layer
layer
support plate
circuit board
conductive circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710584291.7A
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Chinese (zh)
Other versions
CN107241862B (en
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUBEI YIHONG PRECISION MANUFACTURING Co Ltd
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Individual
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Filing date
Publication date
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Priority to CN201710584291.7A priority Critical patent/CN107241862B/en
Publication of CN107241862A publication Critical patent/CN107241862A/en
Application granted granted Critical
Publication of CN107241862B publication Critical patent/CN107241862B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/0011Working of insulating substrates or insulating layers
    • H05K3/0014Shaping of the substrate, e.g. by moulding
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09009Substrate related
    • H05K2201/09045Locally raised area or protrusion of insulating substrate

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)

Abstract

A kind of circuit board, including the first dielectric layer, the first conductive circuit layer, bump pattern and the second dielectric layer, first dielectric layer and the second dielectric layer are connected with each other, first conductive circuit layer includes center packaging area and the surrounding package region around the center packaging area, the bump pattern, which is formed at the first dielectric layer, has the surface away from the second dielectric layer, the bump pattern is integrally formed with first dielectric layer, and the shape of the bump pattern is corresponding with the intersection of the center packaging area and surrounding package region.The present invention also provides a kind of preparation method of the circuit board.

Description

Circuit board
The application be Application No. 2013102586889, the applying date be on 06 26th, 2013, invention and created name " electricity Road plate preparation method " patent divisional application.
Technical field
The present invention relates to circuit board making field, more particularly to a kind of circuit board with metal coupling.
Background technology
In the prior art, in order to save the volume of encapsulating structure.It is generally necessary in the circuit board top as encapsulating carrier plate Encapsulate chip and circuit board.Wherein, the corresponding packaging area of chip usually requires to set more intensive engagement pad, and and circuit The area for the engagement pad that plate is packaged is generally larger, and is distributed more sparse.Also, during being packaged, generally Need, first by chip package in encapsulating carrier plate, to be then again packaged the package substrate for being packaged with chip with other circuit boards. In the prior art, it usually needs two layers of welding resisting layer is made on the surface of encapsulating carrier plate, first layer welding resisting layer is used to define support plate On engagement pad, the second welding resisting layer (Dam Ring) formation is on the first welding resisting layer, and around chip package region, with encapsulation Dykes and dams effect is played during chip.However, because the first welding resisting layer and the second welding resisting layer are formed respectively, after encapsulation, easily by In stress concentration in the first welding resisting layer and the intersection of the second welding resisting layer, so as to cause the first welding resisting layer and the second welding resisting layer mutual Separation.
The content of the invention
Therefore, it is necessary to provide making and its method for a kind of circuit board, above mentioned problem can solve the problem that.
A kind of circuit board, including the first dielectric layer, the first conductive circuit layer, bump pattern and the second dielectric layer, described One dielectric layer and the second dielectric layer are connected with each other, and first conductive circuit layer includes center packaging area and around the center The surrounding package region of packaging area, the bump pattern, which is formed at the first dielectric layer, has the surface away from the second dielectric layer, The bump pattern is integrally formed with first dielectric layer, and the shape of the bump pattern is with the center packaging area and outside The intersection for enclosing packaging area is corresponding.
A kind of circuit board manufacturing method, including step:Support plate is provided, the support plate has first surface;From the support plate First surface form groove pattern into the support plate;Projection figure is formed in the groove pattern by pressing insulating materials Shape, and simultaneously in first surface the first dielectric layer of formation of support plate, first dielectric layer is integrally formed with the bump pattern; First dielectric layer surface formed the first conductive circuit layer, first conductive circuit layer include center packaging area with Surrounding package region, the center packaging area and the intersection in surrounding package region are corresponding with the bump pattern;First Conductive circuit layer side presses the second dielectric layer;And remove the support plate.
Compared with prior art, circuit board that the technical program is provided and preparation method thereof, by support plate inner groovy figure Shape, then forms the first dielectric layer and bump pattern so that bump pattern and the first dielectric layer one simultaneously by way of pressing It is body formed.Compared in the prior art, successively formed respectively by way of forming welding resisting layer twice, so as to avoid in envelope After dress, because stress concentration is in the intersection of two layers of welding resisting layer so that two layers of welding resisting layer is separated from each other.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section for the support plate that the technical program embodiment is provided.
Fig. 2 is the diagrammatic cross-section formed in Fig. 1 support plate after groove pattern.
Fig. 3 is Fig. 2 top view.
Fig. 4 is that Fig. 2 support plate surface presses the diagrammatic cross-section after the first dielectric layer.
Fig. 5 is the diagrammatic cross-section after Fig. 4 the first dielectric layer surface the first conductive circuit layer of formation.
Fig. 6 is that Fig. 5 the first conductive circuit layer side presses the diagrammatic cross-section after the second dielectric layer.
Fig. 7 is the diagrammatic cross-section after Fig. 6 the second dielectric layer surface the second conductive circuit layer of formation.
Fig. 8 is the diagrammatic cross-section after Fig. 7 the second conducting wire layer surface formation welding resisting layer.
Fig. 9 is that Fig. 8 removes the diagrammatic cross-section after support plate.
Figure 10 is the diagrammatic cross-section formed in Fig. 9 the first dielectric layer after the first opening and the second opening.
Figure 11 is the diagrammatic cross-section for the circuit board that the technical program makes.
Figure 12 is Figure 11 top view.
Main element symbol description
Following embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Embodiment
The circuit board manufacturing method that the technical program is provided comprises the following steps:
The first step, referring to Fig. 1, providing support plate 110.
The support plate 110 is made up of use metal material.In the present embodiment, support plate 110 is made of metallic aluminium.It is described to carry Plate 110 has first surface 111, and the first surface 111 is plane.
Second step, refers to Fig. 2 and Fig. 3, and groove pattern 112 is formed in the support plate 110.
The groove pattern 112 can be formed by the way of laser ablation.The groove pattern 112 should be with electricity to be made The sideline in the chip package region of road plate is corresponding, in the present embodiment, and the groove pattern 112 is generally shaped like square shape. The groove pattern 112 is formed at the intermediate region of support plate 110.
3rd step, referring to Fig. 4, first dielectric layer of the formation of first surface 111 120 in the support plate 110 simultaneously exists simultaneously Bump pattern 130 is formed in groove pattern 112.
First dielectric layer 120 and bump pattern 130 can be formed by way of pressing semi-solid preparation film.It is described convex Block graphics 130 is filled up completely with the groove pattern 112, and the first dielectric layer 120 covers whole first surface 111.Described One dielectric layer 120 is integrally formed with bump pattern 130.The material of first dielectric layer 120 can be commonly used in the art exhausted Edge material, such as polyimides.
First dielectric layer 120 has the second surface 121 adjacent with first surface 111, and the bump pattern 130 is convex For second surface 121, the shape and groove pattern 112 of the bump pattern 130 are complementary, also with the chip of circuit board to be made The sideline of packaging area is corresponding, in the present embodiment, and the bump pattern 130 is generally shaped like square shape.
4th step, referring to Fig. 5, forming the first conductive circuit layer in side of first dielectric layer 120 away from support plate 110 140。
First conductive circuit layer 140 can be made of semi-additive process.It is understood that first conductor wire Road floor 140 can also make to be formed using other circuit manufacturing methods commonly used in the trade.
First conductive circuit layer 140 includes center packaging area 141 and surrounding package region 142.The center envelope Filling includes multiple distribution less first engagement pads 1411 of more intensive and area, the surrounding package region 142 in region 141 Around the center packaging area 141, distribution is distributed more sparse and larger area second and connect in surrounding package region 142 Touch pad 1421.The center packaging area 141 and the intersection in surrounding package region 142 are corresponding with bump pattern 130.
5th step, referring to Fig. 6, pressing the second dielectric layer 150 in the side of the first conductive circuit layer 140.
In this step, it would however also be possible to employ the mode of pressing semi-solid preparation film forms the second dielectric layer 150.In the present embodiment, The material of second dielectric layer 150 is identical with the material of the first dielectric layer 120.The thickness of second dielectric layer 150 can be more than The thickness of first dielectric layer 120.
In the present embodiment, after this step, it can further include and form hole 151 in the second dielectric layer 150.Can be with Hole 151 is formed by the way of laser ablation.Second dielectric layer 150 is run through in hole 151 so that the first conductive circuit layer 140 The second engagement pad 1421 expose from the bottom in hole 151.
6th step, referring to Fig. 7, forming the second conductor wire in side of second dielectric layer 150 away from the first dielectric layer 120 Road floor 160.
This step equally can form the second conductive circuit layer using the identical method of the first conductive circuit layer 140 is formed 160。
In the present embodiment, prior to or while the second conductive circuit layer 160 is formed, conduction material is also formed in hole 151 Material, so as to form conductive hole 152, first conductive circuit layer 140 passes through the phase of conductive hole 152 with the second conductive circuit layer 160 Transconductance leads to.
7th step, referring to Fig. 8, forming welding resisting layer 170 on the surface of the second conductive circuit layer 160.
This step can form welding resisting layer 170 by the way of printing liquid anti-solder ink.Formed in the welding resisting layer 170 There is the conducting wire in multiple perforates 171, the second conductive circuit layer of part 160 to expose from perforate 171, form electrical connection pad 161.
8th step, also referring to Fig. 9, removes support plate 110.
In the present embodiment, support plate 110, which is adopted, to be formed from aluminium, and this step can be removed support plate 110 by the way of chemical etching Remove so that the first dielectric layer 120 and bump pattern 130 are exposed.
9th step, referring to Fig. 10, forming multiple first openings 123 and multiple second in first dielectric layer 120 Opening 124, each first opening is 123 corresponding with the first engagement pad 1411, and each first engagement pad 1411 is from corresponding first Opening 123 is exposed.Each second opening is 124 corresponding with second engagement pad 1421, and each second engagement pad 1421 is from right The second opening 124 answered is exposed.
The opening 124 of first opening 123 and second can be formed by the way of laser ablation.
Tenth step, refers to Figure 11 and Figure 12, in first engagement pad 1411, the second engagement pad 1421 and electrical connection pad 161 surface forms protective layer 180, and the surface of the protective layer 180 in the first engagement pad 1411 forms solder projection 190, So as to obtain circuit board 100.
The protective layer 180 can be organic guarantor weldering film (OSP), or nickel-gold layer or NiPdAu layer.
Figure 11 and Figure 12 is referred to, the technical program also provides a kind of circuit board 100, and the circuit board 100 includes first Dielectric layer 120, bump pattern 130, the first conductive circuit layer 140, the second dielectric layer 150 and the second conductive circuit layer 160.
The dielectric layer 150 of first dielectric layer 120 and second is connected with each other.First conductive circuit layer 140 is located at the Between one dielectric layer 120 and the second dielectric layer 150.
First conductive circuit layer 140 includes center packaging area 141 and surrounding package region 142.The center envelope Filling includes multiple distribution less first engagement pads 1411 of more intensive and area, the surrounding package region 142 in region 141 Around the center packaging area 141, distribution is distributed more sparse and larger area second and connect in surrounding package region 142 Touch pad 1421.
First dielectric layer 120 has the second surface 121 away from the second dielectric layer 150.The shape of bump pattern 130 The side of second surface 121 described in Cheng Yu.The bump pattern 130 is made with the first dielectric layer 120 of identical material, and one It is body formed.Bump pattern 130 and the center packaging area 141 of the first conductive circuit layer 140 and the friendship in surrounding package region 142 Line is corresponding.
Multiple first openings 123 and multiple second openings 124 are formed with first dielectric layer 120, each first opens Mouth 123 is corresponding with the first engagement pad 1411, and each first engagement pad 1411 is exposed from the corresponding first opening 123.Each Two openings 124 are corresponding with second engagement pad 1421, and each second engagement pad 1421 is revealed from the corresponding second opening 124 Go out.
Second conductive circuit layer 160 is formed at side of second dielectric layer 150 away from the first conductive circuit layer 140. The surface of second conductive circuit layer 160 is formed with welding resisting layer 170.Multiple perforates 171, portion are formed with the welding resisting layer 170 The conducting wire divided in the second conductive circuit layer 160 is exposed from perforate 171, forms electrical connection pad 161.
The circuit board 100 can also include protective layer 180, and the protective layer 180 is formed at electrical connection pad 161, first The surface of the engagement pad 1421 of engagement pad 1411 and second.
The surface of protective layer 180 in first engagement pad 1411 is also formed with solder projection 190, for encapsulating electronics Welded during element.
Circuit board that the technical program is provided and preparation method thereof, by support plate inner groovy figure, then passing through pressing Mode form the first dielectric layer and bump pattern simultaneously so that bump pattern is integrally formed with the first dielectric layer.Compared to existing Have in technology, successively formed respectively by way of forming welding resisting layer twice, so as to avoid after encapsulation, due to stress Concentrate on the intersection of two layers of welding resisting layer so that two layers of welding resisting layer is separated from each other.
It is understood that the circuit board manufacturing method of the technical program can apply to high-density interconnected circuit board (HDI) making.
It is understood that for the person of ordinary skill of the art, can be done with technique according to the invention design Go out other various corresponding changes and deformation, and all these changes and deformation should all belong to the protection model of the claims in the present invention Enclose.

Claims (9)

1. a kind of circuit board, including the first dielectric layer, the first conductive circuit layer, bump pattern and the second dielectric layer, described first Dielectric layer and the second dielectric layer are connected with each other, and first conductive circuit layer includes center packaging area and around center envelope The surrounding package region in region is filled, the bump pattern, which is formed at the first dielectric layer, has the surface away from the second dielectric layer, institute State bump pattern to be integrally formed with first dielectric layer, the shape of the bump pattern and the center packaging area and periphery The intersection of packaging area is corresponding;The circuit board is adopted to be made with the following method:
Support plate is provided, the support plate has first surface;
From the first surface of the support plate groove pattern is formed into the support plate;
Bump pattern is formed in the groove pattern by pressing insulating materials, and simultaneously in the first surface formation the of support plate One dielectric layer, first dielectric layer is integrally formed with the bump pattern;
The first conductive circuit layer is formed on the surface of first dielectric layer, first conductive circuit layer includes center encapsulation region Domain and surrounding package region, the center packaging area and the intersection in surrounding package region are corresponding with the bump pattern;
The second dielectric layer is pressed in the first conductive circuit layer side;And
Remove the support plate.
2. circuit board as claimed in claim 1, it is characterised in that there are the multiple first contacts in the center packaging area There are multiple second engagement pads in pad, the surrounding package region, after the support plate is removed, be additionally included in described first and be situated between Multiple first openings and multiple second openings, each first opening, Mei Ge corresponding with the first engagement pad are formed with electric layer Two openings are corresponding with the second engagement pad.
3. circuit board as claimed in claim 1, it is characterised in that pressed in the first conductive circuit layer side the second dielectric layer it Afterwards, and before the support plate is removed, it is additionally included in side of second dielectric layer away from the first dielectric layer and forms the second conductor wire Road floor.
4. circuit board as claimed in claim 3, it is characterised in that after the second conductive circuit layer is formed, and removing institute State before support plate, be additionally included in the second conductive circuit layer side formation welding resisting layer, the welding resisting layer and be formed with perforate, part institute State the second conductive circuit layer from the perforate to expose, form electrical connection pad.
5. circuit board as claimed in claim 1, it is characterised in that the support plate, which is adopted, to be formed from aluminium, the groove pattern is used Laser ablation is formed, and the support plate is removed by the way of etching.
6. circuit board as claimed in claim 1, it is characterised in that there are the multiple first connections in the center packaging area Pad, with multiple second connection gaskets in the surrounding package region, the bump pattern be formed at the first dielectric layer have it is remote Multiple first openings and multiple second openings are formed with the surface of second dielectric layer, first dielectric layer, each first opens Mouth is corresponding with the first engagement pad, and each second opening is corresponding with the second engagement pad.
7. circuit board as claimed in claim 1, it is characterised in that first dielectric layer, bump pattern and the second dielectric layer Material it is identical.
8. circuit board as claimed in claim 1, it is characterised in that also including the second conductive circuit layer, second conductor wire Road floor is formed at side of second dielectric layer away from the first conductive circuit layer.
9. circuit board as claimed in claim 4, it is characterised in that also including conductive hole, the conductive hole is formed at second Jie In electric layer, first conductive circuit layer is mutually conducted with the second conductive circuit layer by the conductive blind hole.
CN201710584291.7A 2013-06-26 2013-06-26 Circuit board Expired - Fee Related CN107241862B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710584291.7A CN107241862B (en) 2013-06-26 2013-06-26 Circuit board

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Application Number Priority Date Filing Date Title
CN201310258688.9A CN104254190B (en) 2013-06-26 2013-06-26 The preparation method of circuit board
CN201710584291.7A CN107241862B (en) 2013-06-26 2013-06-26 Circuit board

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CN107241862A true CN107241862A (en) 2017-10-10
CN107241862B CN107241862B (en) 2019-05-03

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI624011B (en) * 2015-06-29 2018-05-11 矽品精密工業股份有限公司 Package structure and the manufacture thereof
CN106356355B (en) * 2015-07-15 2020-06-26 恒劲科技股份有限公司 Substrate structure and manufacturing method thereof
TWI679926B (en) * 2019-01-09 2019-12-11 欣興電子股份有限公司 Substrate structure and manufacturing method thereof

Citations (4)

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Publication number Priority date Publication date Assignee Title
US5413964A (en) * 1991-06-24 1995-05-09 Digital Equipment Corporation Photo-definable template for semiconductor chip alignment
JPH1012671A (en) * 1996-06-26 1998-01-16 Ngk Spark Plug Co Ltd Wiring board, manufacture thereof, wiring board mounted with board, and manufacture thereof
TW200515616A (en) * 2003-10-21 2005-05-01 Advanced Semiconductor Eng Wafer structure for preventing contamination of bond pads during SMT process and process for the same
TWM450822U (en) * 2012-10-08 2013-04-11 Unimicron Technology Corp Package substrate

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Publication number Priority date Publication date Assignee Title
US5343616B1 (en) * 1992-02-14 1998-12-29 Rock Ltd Method of making high density self-aligning conductive networks and contact clusters
CN102281725B (en) * 2010-06-10 2013-03-20 富葵精密组件(深圳)有限公司 Manufacturing method for circuit board
TWI505765B (en) * 2010-12-14 2015-10-21 Unimicron Technology Corp Wiring board and method for fabricating the same
TWI470759B (en) * 2011-11-01 2015-01-21 Unimicron Technology Corp Package substrate and fabrication method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5413964A (en) * 1991-06-24 1995-05-09 Digital Equipment Corporation Photo-definable template for semiconductor chip alignment
JPH1012671A (en) * 1996-06-26 1998-01-16 Ngk Spark Plug Co Ltd Wiring board, manufacture thereof, wiring board mounted with board, and manufacture thereof
TW200515616A (en) * 2003-10-21 2005-05-01 Advanced Semiconductor Eng Wafer structure for preventing contamination of bond pads during SMT process and process for the same
TWM450822U (en) * 2012-10-08 2013-04-11 Unimicron Technology Corp Package substrate

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TW201507564A (en) 2015-02-16
TWI530240B (en) 2016-04-11
CN104254190B (en) 2017-12-01
CN104254190A (en) 2014-12-31
CN107241862B (en) 2019-05-03

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Effective date of registration: 20190409

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Applicant after: Hubei Yihong Precision Manufacturing Co., Ltd.

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