WO2006109785A1 - 電子部品の設計方法 - Google Patents
電子部品の設計方法 Download PDFInfo
- Publication number
- WO2006109785A1 WO2006109785A1 PCT/JP2006/307612 JP2006307612W WO2006109785A1 WO 2006109785 A1 WO2006109785 A1 WO 2006109785A1 JP 2006307612 W JP2006307612 W JP 2006307612W WO 2006109785 A1 WO2006109785 A1 WO 2006109785A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electronic component
- electrical
- database
- design
- electrical characteristics
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
-
- 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
- H05K3/0005—Apparatus or processes for manufacturing printed circuits for designing circuits by computer
-
- 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
- H05K1/03—Use of materials for the substrate
- H05K1/0306—Inorganic insulating substrates, e.g. ceramic, glass
-
- 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
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors
- H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors incorporating printed capacitors
-
- 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
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors
- H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors incorporating printed inductors
-
- 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
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors
- H05K1/167—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors incorporating printed resistors
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4626—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials
- H05K3/4629—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials laminating inorganic sheets comprising printed circuits, e.g. green ceramic sheets
Definitions
- the present invention relates to a method of designing an electronic component.
- FIG. 7 relates to a method of designing this kind of electronic component, and in particular shows a flowchart using a CAD system.
- predetermined electrical characteristics are determined in step 101.
- step 102 the electrical equivalent circuits and the electrical constants of the electronic components constituting them are determined by an electrical circuit simulator or the like so that the electrical characteristics determined in step 101 satisfy predetermined values.
- step 103 the physical shape or conductive metal pattern of the electronic component or the like for realizing the electrical constant determined in step 102 is determined.
- step 104 each electronic component and the like are arranged in the module based on the physical shape of the various electronic components determined in step 102, and the wiring pattern between the electronic component and the external terminal is arranged. Do. Furthermore, at step 105, the electrical characteristics are measured, and it is determined whether or not it is in accordance with the predetermined electrical characteristics determined at step 101. Here, if a predetermined electrical characteristic is not realized, the process returns to step 103 again, and the processing of step 103 and subsequent steps is repeated. If the predetermined electrical characteristics are obtained in step 105, all processing ends.
- the above-described conventional example has a problem in design efficiency. That is, in the conventional configuration, the pattern shape determination in step 103 and the layout design in step 104 have not been completed at the time of the electric circuit simulation in step 102, and an electric circuit simulation in consideration of the layout can be performed. Absent. For this reason, at the stage of measurement of the electrical characteristics in step 105, it is often repeated that the result does not coincide with the predetermined electrical characteristics. It was not. Furthermore, perform the electrical circuit simulation in step 102 with the electrical circuit simulator, and perform other steps in the CAD system! /, As you think about the design efficiency. Power
- the present invention provides a method of designing an electronic component with improved design efficiency.
- the present invention adds the function of performing electrical circuit simulation, and adds the step of performing electrical circuit simulation between the steps of layout design and electrical characteristic measurement.
- a specific method of designing an electronic component according to the present invention comprises, first, a first step of setting a predetermined electrical characteristic, and a first electrical circuit simulation to satisfy the electrical characteristic. It has a second step of determining the constant. In addition, the third step of determining the physical pattern shape to obtain the electrical constant of the electronic component, and searching and selecting the electronic component having the predetermined electrical constant from the database, the selected electronic component is selected. It has the fourth step of designing the layout as a module. Also, after the fourth step of designing the layout, the fifth step of simulating the second electric circuit, and measuring the electric characteristics of the module, the predetermined electric characteristics will be met! And the sixth step of determining
- the database stores three-dimensional shape information of the electronic component and the electrical characteristics of the electronic component.
- the database when the electronic component is disposed, stores three-dimensional information of an allowable clearance that defines an arrangement interval with another adjacent electronic component. There is.
- the database stores a wiring pattern for connecting the electronic component and another electronic component and three-dimensional shape information of the via hole. There is.
- the processes of the second, third, fourth and fifth steps are processed by the same CAD system.
- the electronic component is formed on a low temperature fired ceramic substrate.
- the electronic component includes at least one of a capacitor, an inductor and a resistor.
- the low temperature fired ceramic substrate is a multilayer circuit substrate.
- FIG. 1 is a transparent perspective view of a multilayer circuit component module according to an embodiment of the present invention.
- FIG. 2 is a plan developed view of a pattern formation layer according to the embodiment of the present invention.
- FIG. 3 is an electrical equivalent circuit diagram of a multilayer circuit component module according to an embodiment of the present invention.
- FIG. 4 is a flowchart showing a module design procedure applicable to the embodiment of the present invention.
- FIG. 5 is a conceptual view showing the form of a database according to the embodiment of the present invention.
- FIG. 6 is a conceptual view showing a database to which an allowable clearance according to the embodiment of the present invention is added as an attribute.
- FIG. 7 is a flowchart showing a conventional module design procedure.
- FIG. 1 is a transparent perspective view of an example in which a module using a low-temperature fired ceramic (hereinafter referred to as LTCC) substrate is an electronic component.
- the module shown in FIG. 1 exemplifies the use of four dielectric substrates la, lb, lc and Id.
- a conductive metal pattern or the like which also has a force such as copper or silver, is formed between the dielectric substrates la and lb, between the dielectric substrates lb and lc, and between the dielectrics lc and Id.
- dielectric substrates la to Ld are formed of, for example, four sheets, five layers of pattern forming layers 11, 12, 13, 14 and 15 forming a pattern can be formed.
- the external input terminal 3 is connected to the capacitor area 6 including the capacitor electrode sections 6A and 6B through the wiring pattern 9A and the via hole 8A, and then connected to the branched wiring pattern 9B.
- One of the branched wiring patterns 9B is connected to the output external terminal 4 through the via hole 8B.
- the other of the branched wiring patterns 9B is connected to the inductor area 7 and then connected to the external installation terminal 5 via the via hole 8C.
- FIG. 2 is a plan developed view of the pattern forming layers 11, 12, 13, 14 and 15 shown in FIG.
- the same reference numerals are used for the same parts as in FIG.
- the pattern forming layer 11 is electrically connected to the terminals present on the printed circuit board.
- An external terminal pattern is formed.
- the capacitor portion region 6 is formed by the rectangular pattern 6 B of the pattern forming layer 12 and the rectangular pattern 6 A of the pattern forming layer 13. That is, the rectangular patterns 6A and 6B are formed as electrode parts of the capacitor part area 6.
- An inductor portion 7 is formed by the spiral pattern 7 B of the pattern forming layer 13 and the spiral pattern 7 A of the pattern forming layer 14.
- the top surface of the pattern forming layer 15 is shown without the pattern. However, when a chip-shaped electronic component (not shown) is further mounted on the surface of the module, a connection pattern for electrically connecting to the chip-shaped electronic component (not shown) is formed in the pattern forming layer 15 You may.
- FIG. 1 An electrical equivalent circuit created based on the wiring information shown in FIG. 1 and FIG. 2 is shown in FIG.
- the power input from the input external terminal 3 is higher than a certain frequency, and a high pass filter which passes only the frequency to the output external terminal 4 V ⁇ ⁇ All HPF It has an electrical circuit function as (High Pass Filter).
- FIG. 1 A flowchart for designing a module using such an LTCC substrate is shown in FIG.
- the predetermined electrical characteristics to be targeted are determined.
- the predetermined electrical characteristic may be, for example, the bandwidth of a high band pass filter or a cutoff frequency.
- the electrical constants of the module are determined by a first electrical circuit simulation incorporated into the CAD system 40 to achieve the predetermined electrical characteristics.
- the thickness of the LTCC substrate and the pattern shape of the conductive metal are determined.
- step 24 layout design is performed.
- the pattern shape and layout design are performed using mechanical system 3D CAD, the design efficiency of the multilayer circuit component in which the electronic component area is integrated in a 3D space such as a module using an LTCC substrate is obtained. You can raise it.
- step 25 a second electric circuit simulation is performed in consideration of the number of via holes 8A, 8B and 8C, the length of wiring patterns 9A and 9B (see FIG. 1), and the like. Note that the second electrical circuit simulation is also incorporated in the CAD system 40 !. Second power If the result of the air circuit simulation (step 25) is not consistent with the target electrical characteristics or if it deviates significantly from the predetermined range (characteristic NG1), the conductive metal pattern is used to reduce those errors. Change the shape, the position of the electronic component area in the module, and the length and position of via holes and wiring patterns. For this purpose, the process returns to step 23, and the processes after step 23 are performed again.
- step 26 the electrical characteristics of the actually created module are measured, and it is determined whether the electrical characteristics of the target match. If the predetermined electrical characteristics are obtained in step 26 (characteristic OK2), the design of the electronic component is finished. If the measurement of the electrical characteristics deviates from the prescribed tolerance range, perform the process from step 23 on again.
- an electromagnetic field simulator is generally used to solve the mask well equation based on the module structure and the electrical boundary conditions.
- the capacitor portion region 6 and the inductor portion region 7 as the lumped constant of the capacitance and the inductance alone is not performed, but a single-dimensional circuit having a three-dimensional shape. It is calculated using the electrical characteristics obtained by analyzing the electromagnetic field of one electronic component area.
- the capacitor section It is possible to simulate the electrical characteristics taking into consideration the effects of various parasitic components such as parasitic inductors and parasitic capacitances in the area 6 and the inductor area 7 and to predict the electrical characteristics with high accuracy.
- the three-dimensional shape information of the electronic component area having the electrical property closest to the electrical property required for the layout design in step 24 is automatically extracted from the database, and the module volume is minimized. Or automatically placing the module in a three-dimensional space by imposing various constraints such as minimizing the total length of the wiring patterns 9A and 9B for electrically connecting the electronic component regions.
- the efficiency of the layout design procedure in step 24 can also be greatly improved.
- FIG. 5 shows the electrical characteristics of the electronic component obtained by conducting electromagnetic field analysis based on the three-dimensional shape information 3DI of the electronic components A to F and the three-dimensional shape information 3DI thereof as a pair of data It is a conceptual diagram of a database.
- a database 50 is shown in FIG.
- the database 50 stores, for example, three-dimensional information 3DI of each electronic component shown below and various electrical characteristics.
- the electronic component A shown at the top of FIG. 5 represents, for example, capacitors.
- the width (W), depth (L) and height (H) are shown as 3D shape information 3DI of the capacitor.
- the dimensions of each are 0.8 mm, 0.8 mm and 0.4 mm.
- the size of the electrode is 0.6 mm x O. 6 mm.
- the electrical characteristic 5EA of the electronic component A is, for example, It is stored in the database 50 as the characteristic of the PEDANS ZA.
- the electronic component B shown in the second from the top of FIG. 5 is shown as the same capacitor as the electronic component A.
- Width (W), depth (L) and height (H) are shown as 3D shape information 3DI of the capacitor of the electronic component B.
- the dimensions of each are 1.4 mm, 1.2 mm and 0.2 mm, respectively.
- the size of the electrode is: 1. OmmX O. 8mm.
- the electrical characteristic 5EB of the electronic component B indicates, for example, the characteristic of the impedance ZB with respect to the frequency f.
- the electronic component B is selected, for example, to have a larger capacity than the capacitor of the electronic component A. Therefore, the impedance ZB of the electronic component B is smaller than that of the electronic component A.
- the electronic component C shown in the third from the top of FIG. 5 is shown as an inductor.
- the width (W), depth (L) and height (H) of the electronic component C are 1. Omm, 1. Omm and 0.6 mm, respectively.
- a spiral inductor is formed on the outermost surface.
- the electrical characteristics 5EC of the electronic component C are the same as the electronic components A and B, for example, indicated as the characteristics of the impedance Z C with respect to the frequency f.
- the electronic component D shown in the fourth stage of the upper force in Fig. 5 is shown as an inductor in the same manner as the electronic component C.
- the width (W), depth (L) and height (H) of the electronic component D are 1.5 mm, 0.8 mm and 0.6 mm, respectively.
- a spiral inductor is formed on the outermost surface.
- the electrical characteristics 5ED of the electronic component C are stored in the database 50 in the same manner as the electronic components A, B and C, for example, as the characteristics of the impedance ZD with respect to the frequency f.
- Electronic component D is selected to have, for example, a larger inductance than the inductor of electronic component C. Therefore, the impedance of the electronic component D is larger than that of the electronic component C.
- the lowermost row of FIG. 5 very schematically shows electrical characteristics 5EE, 5EF as three-dimensional shape information 3DI of the electronic components E, F for convenience of drawing.
- the electronic components E and F may be capacitors or inductors. Alternatively, they may be electronic components other than these, for example, resistors.
- FIG. 6 shows data to which an allowable clearance as in the embodiment of the present invention is added as an attribute. It is a conceptual diagram which shows a base. That is, in FIG. 6, when various electronic components are arranged on, for example, an LTCC substrate, allowable tolerances that define the arrangement intervals between adjacent electronic components are stored as three-dimensional information.
- electromagnetic field analysis is performed based on three-dimensional shape information 3DI of each of the electronic components A to F, and the distance between the electronic component and the adjacent electronic component sufficiently small in electric field strength is allowed. It is defined as a clear ACL and stored in a database.
- FIG. 6 shows that the allowable clearances ACL, BCL, CCL and DCL of the electronic components A, B, C and D are 0.05 mm, 0.1 mm, 0.15 mm and 0.05 mm, respectively.
- These permissible clearances ACL to DCL can be defined as the spacing S (indicated by a broken line) between each electronic component A to D and the adjacent electronic component (not shown) in FIG. Therefore, the interval S corresponds to each allowable clearance.
- the allowable clearance as 3D shape information 3DI of electronic parts E and F is shown for the convenience of drawing.
- FIG. 6 schematically shows the electrical characteristics 6EA, 6EB, 6EC, 6ED, 6EE and 6EF of the electronic components A to F. These electrical characteristics may be the impedance of the electronic component as shown in FIG. Also, it may be other electrical characteristics such as capacitance characteristics and inductance characteristics.
- step 21 shown in FIG. 4 an electrical characteristic target value is set.
- capacitor area 6, inductor area 7 using the first electrical circuit simulation incorporated in CAD system 40 in step 22 to meet this electrical characteristic (see FIG. 1). Determine the electrical constants C and L of).
- the pattern shape for obtaining the electrical constants C and L, and the thickness of the electronic component area such as the capacitor area 6 and the inductor area 7 are determined in step 23.
- an electronic component having an electrical constant closest to the electrical constant such as C or L determined in step 22 is retrieved from the database 50 shown in FIG. Select appropriate electronic components.
- step 24 layout design is performed in which the selected electronic component is oriented in the three-dimensional space in the module.
- To orient these electronic components in a three-dimensional space It is not easy to use two-dimensional CAD or printed circuit board for plan drawing. If 3D shape information data used in 3D electromagnetic field analysis performed in advance is prepared for each electronic component, 3D CAD that can effectively use these data is effective for layout design. It is.
- the conventional layout design relies on the designer's past experience, etc., based on various constraints such as not causing electromagnetic field coupling between electronic components, etc., or minimizing the module volume. Thank you.
- the database 60 shown in FIG. 6 is used, layout design can be performed without generating electromagnetic field coupling between electronic components as much as possible, and design efficiency can be increased.
- the electronic parts are electrically connected by the via holes 8A, 8B, 8C and the wiring patterns 9A, 9B based on the wiring information of the electrical equivalent circuit shown in FIG. refer graph1).
- three-dimensional shape information 3DI corresponding to the via holes 8A, 8B, 8C and the wiring patterns 9A, 9B in the database 60 as shown in FIG. 6 and the corresponding electrical characteristics 6EA to 6EF are other electronic components.
- the electronic component areas such as capacitor area 6 and inductor area 7 and via holes 8A, 8B, 8C, and electronic parts area and wiring, which are formed only by electromagnetic field coupling between electronic components. An effect is obtained that layout design can be performed with as little electromagnetic field coupling between patterns 9A and 9B as possible.
- the second electrical circuit simulation is embedded in the CAD system 40.
- step 26 the electrical characteristics of the actually created module are measured to determine whether or not the target predetermined electrical characteristics are met.
- the second electric circuit simulation in which the three-dimensional shape information 3DI is taken into consideration can be performed in step 25 (see FIG. 4), so that high-precision electric characteristics can be obtained.
- the design efficiency can be improved because it is possible to avoid re-doing the simulation many times.
- by adding the circuit simulation function to CAD system 40 these procedures can be repeated within the same system. Design efficiency is improved.
- design efficiency can be improved because electromagnetic field coupling can be always taken into consideration without the need to re-do simulation many times. Do.
- the LTCC substrate is used as the substrate material
- the circuit is the HPF
- the electrical characteristics are described using the frequency and the impedance.
- other electrical characteristics such as a band filter (B and Pass Filter) may be used.
- the electronic component design method of the present invention has the effect of improving the design efficiency, and is particularly useful in CAD systems for designing multilayer circuit components and the like, so its industrial applicability is high. .
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- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Design And Manufacture Of Integrated Circuits (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06731559A EP1791069A4 (en) | 2005-04-12 | 2006-04-11 | METHOD FOR DESIGNING AN ELECTRONIC COMPONENT |
| US11/629,909 US7496875B2 (en) | 2005-04-12 | 2006-04-11 | Designing method for designing electronic component |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-114144 | 2005-04-12 | ||
| JP2005114144A JP2006293726A (ja) | 2005-04-12 | 2005-04-12 | 電子部品の設計方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006109785A1 true WO2006109785A1 (ja) | 2006-10-19 |
Family
ID=37087056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/307612 Ceased WO2006109785A1 (ja) | 2005-04-12 | 2006-04-11 | 電子部品の設計方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7496875B2 (ja) |
| EP (1) | EP1791069A4 (ja) |
| JP (1) | JP2006293726A (ja) |
| CN (1) | CN101010675A (ja) |
| WO (1) | WO2006109785A1 (ja) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008293066A (ja) * | 2007-05-22 | 2008-12-04 | Panasonic Corp | 電子回路シミュレーション用ライブラリ、ライブラリ生成システム、これらが格納された記録媒体、及びこれらを用いた電子機器の製造方法 |
| US7724117B2 (en) * | 2008-01-11 | 2010-05-25 | Northrop Grumman Systems Corporation | Multilayer passive circuit topology |
| JP4856269B1 (ja) * | 2010-09-06 | 2012-01-18 | 株式会社東芝 | 配線設計支援装置及び配線設計支援方法 |
| CN102754102B (zh) * | 2010-12-09 | 2016-02-03 | 松下电器产业株式会社 | 三维集成电路的设计支持装置及设计支持方法 |
| CN103678814B (zh) * | 2013-12-18 | 2016-06-29 | 北京航空航天大学 | 临界倾角近圆轨道的偏心率预偏置设计方法 |
| CN103853887B (zh) * | 2014-03-05 | 2016-09-14 | 北京航空航天大学 | 一种冻结轨道的偏心率的卫星轨道确定方法 |
| CN108629103B (zh) * | 2015-04-08 | 2022-02-11 | 上海望友信息科技有限公司 | Smt贴片制造及smt网板制作方法和系统 |
| US10244873B2 (en) | 2015-10-01 | 2019-04-02 | Isee Store Innovations, Llc | Adjustable product display system and method |
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| JP4082906B2 (ja) * | 2002-01-17 | 2008-04-30 | 富士通株式会社 | プリント基板cadにおけるクリアランスチェック方法及びコンピュータプログラム |
| WO2006127408A2 (en) * | 2005-05-20 | 2006-11-30 | Cadence Design Systems, Inc. | Method and system for increased accuracy for extraction of electrical parameters |
-
2005
- 2005-04-12 JP JP2005114144A patent/JP2006293726A/ja active Pending
-
2006
- 2006-04-11 CN CNA2006800006961A patent/CN101010675A/zh active Pending
- 2006-04-11 WO PCT/JP2006/307612 patent/WO2006109785A1/ja not_active Ceased
- 2006-04-11 EP EP06731559A patent/EP1791069A4/en not_active Withdrawn
- 2006-04-11 US US11/629,909 patent/US7496875B2/en not_active Expired - Fee Related
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| JPH06163698A (ja) * | 1992-11-26 | 1994-06-10 | Mitsubishi Electric Corp | ミリ波またはマイクロ波icのレイアウト設計方法及びレイアウト設計装置 |
| JPH09204451A (ja) * | 1996-01-24 | 1997-08-05 | Sony Corp | 基板設計装置 |
| JPH1166122A (ja) * | 1997-08-13 | 1999-03-09 | Fujitsu Ltd | 解析モデル作成方法及びそのプログラムを格納した記憶媒体 |
| JP2002073718A (ja) * | 2000-09-04 | 2002-03-12 | Tdk Corp | 高周波電子部品の設計システム、高周波電子部品の設計方法及び高周波電子部品の製造方法 |
| JP2003016133A (ja) * | 2001-04-27 | 2003-01-17 | Tdk Corp | 高周波電子部品及びその設計方法 |
| JP2005026312A (ja) * | 2003-06-30 | 2005-01-27 | Hitachi Metals Ltd | 高周波電子部品およびその実装方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20080028348A1 (en) | 2008-01-31 |
| US7496875B2 (en) | 2009-02-24 |
| EP1791069A1 (en) | 2007-05-30 |
| EP1791069A4 (en) | 2010-11-10 |
| JP2006293726A (ja) | 2006-10-26 |
| CN101010675A (zh) | 2007-08-01 |
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