WO2006090459A1 - 無線icタグおよびその製造方法 - Google Patents
無線icタグおよびその製造方法 Download PDFInfo
- Publication number
- WO2006090459A1 WO2006090459A1 PCT/JP2005/003025 JP2005003025W WO2006090459A1 WO 2006090459 A1 WO2006090459 A1 WO 2006090459A1 JP 2005003025 W JP2005003025 W JP 2005003025W WO 2006090459 A1 WO2006090459 A1 WO 2006090459A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless
- hole
- tag
- rom
- pulse width
- 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
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/013—Manufacturing their source or drain regions, e.g. silicided source or drain regions
- H10D84/0133—Manufacturing common source or drain regions between multiple IGFETs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0149—Manufacturing their interconnections or electrodes, e.g. source or drain electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/02—Manufacture or treatment characterised by using material-based technologies
- H10D84/03—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology
- H10D84/038—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology using silicon technology, e.g. SiGe
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/699—Insulating or insulated package substrates; Interposers; Redistribution layers for flat cards, e.g. credit cards
Definitions
- the present invention relates to a wireless IC tag and a manufacturing technique thereof, and more particularly, to a technique for enhancing the functionality of a wireless IC tag and realizing it at a low cost.
- a wireless IC tag is a non-contact type tag in which desired data is written into a memory circuit in a semiconductor chip and this data is read using radio waves such as microwaves.
- Patent Document 1 JP-A-2002-184872 discloses a method for generating a recognition number by generating a random number in advance as a method as a method for assigning a unique recognition number to each wireless IC tag.
- a method of forming a contact hole and a through hole in a memory circuit using an electron beam drawing method and writing the identification number depending on the presence or absence of the contact hole and the through hole is disclosed.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-184872
- the resistance value and / or capacitance value formed in the pulse width detection circuit must be controlled with high accuracy. Is required. However, it is difficult to repeatedly manufacture resistors and capacitors with uniform values due to variations in manufacturing conditions. [0006] Therefore, in order to control the resistance and capacitance values with high accuracy, it is necessary to correct the resistance and capacitance values during the semiconductor manufacturing process. For example, to correct the resistance value, the interval between the through holes connecting the resistor and the wiring may be changed. Specifically, three or more candidate positions for through-holes that connect resistors and wiring are prepared.
- adding a through hole forming step as described above during the semiconductor manufacturing process causes an increase in cost due to an increase in the number of steps.
- the through-hole is formed using photoresist technology using a photomask, the cost of creating a photomask is also added, making it difficult to achieve both high-performance wireless IC tags and low cost. .
- An object of the present invention is to provide a technology capable of promoting the enhancement of the functionality of a wireless IC tag without causing a significant increase in manufacturing cost.
- the wireless IC tag of the present invention includes a memory circuit having a ROM in which a unique identification number is written, and a plurality of clock signals having different pulse widths transmitted from a reader based on resistance and capacitance values.
- a semiconductor chip on which a pulse width detection circuit for detection is formed, and writing of the identification number to the ROM is performed through the first through-hole that conducts between the upper and lower wirings connected to the transistors constituting the ROM.
- the resistance value of the pulse width detection circuit is controlled by the position of the second through hole that conducts between the upper and lower wirings connected to the resistor,
- the first through hole and the second through hole are the same on the semiconductor chip. It is formed on the insulating layer.
- one of the above-described methods for manufacturing a wireless IC tag includes: (a) a transistor constituting the ROM of the memory circuit and the pulse width detection circuit are configured by a semiconductor wafer diffusion step; Forming a semiconductor element including a resistor, and (b) forming a first lower layer wiring connected to the transistor and a second lower layer wiring connected to the resistor above the transistor and the resistor.
- FIG. 1 is a plan view (front side) showing a wireless IC tag according to an embodiment of the present invention.
- FIG. 2 is an enlarged plan view showing a part of FIG.
- FIG. 3 is a side view showing a wireless IC tag according to one embodiment of the present invention.
- FIG. 4 is a plan view (back side) showing a wireless IC tag according to one embodiment of the present invention.
- FIG. 5 is an enlarged plan view showing a part of FIG.
- FIG. 6 is an enlarged plan view (front side) of a main part of a wireless IC tag according to one embodiment of the present invention.
- FIG. 7 is an enlarged plan view (back side) of a main part of a wireless IC tag according to an embodiment of the present invention.
- FIG. 8 is a block diagram of a circuit formed on a semiconductor chip of a wireless IC tag according to one embodiment of the present invention.
- FIG. 9 is a circuit diagram formed on a semiconductor chip of a wireless IC tag according to one embodiment of the present invention. It is.
- FIG. 10 is a waveform diagram of a signal that also transmits the reader power of the wireless IC tag.
- FIG. 11 is a circuit diagram of a pulse width detection circuit formed on a semiconductor chip of a wireless IC tag according to one embodiment of the present invention.
- FIG. 12 is a circuit diagram of a memory circuit formed on a semiconductor chip of a wireless IC tag according to one embodiment of the present invention.
- FIG. 13 is a plan view showing a main part of a memory circuit formed on a semiconductor chip of a wireless IC tag according to one embodiment of the present invention.
- FIG. 14 is a sectional view taken along line AA in FIG.
- FIG. 15 is a flowchart of manufacturing steps of a wireless IC tag according to an embodiment of the present invention.
- FIG. 16 is a plan view of a pulse width detection circuit and a memory circuit showing through-hole candidate positions formed by electron beam drawing.
- FIG. 17 is a cross-sectional view showing the pulse width detection circuit at the time when step (201) shown in FIG. 15 is completed.
- FIG. 18 is a cross-sectional view showing the memory circuit at the time when step (201) shown in FIG. 15 is completed.
- FIG. 19 is a cross-sectional view of a pulse width detection circuit showing a step of forming a through hole using an electron beam drawing method.
- FIG. 20 is a cross-sectional view of a memory circuit showing a step of forming a through hole using an electron beam drawing method.
- FIG. 21 is a plan view of a pulse width detection circuit and a memory circuit showing a step of forming a through hole using an electron beam drawing method.
- FIG. 22 is a cross-sectional view of the pulse width detection circuit showing the manufacturing process following FIG. 19.
- FIG. 23 is a cross-sectional view of the memory circuit showing a manufacturing step following that of FIG. 20;
- FIG. 1 is a plan view (front side) showing a wireless IC tag of the present embodiment
- FIG. 2 is a plan view showing a part of FIG. 1 in an enlarged manner
- FIG. 4 is a side view showing the wireless IC tag
- FIG. 4 is a plan view (back side) showing the wireless IC tag of this embodiment
- FIG. 5 is an enlarged view of part of FIG. FIG.
- the wireless IC tag 1 of the present embodiment includes an antenna 3 made of a Cu foil adhesive bonded to one surface of a narrow rectangular insulating film 2, and a surface and side surfaces sealed with a potting resin 4.
- the semiconductor chip 5 is connected to the antenna 3 in a state of being in the state.
- a force bar film 6 for protecting the antenna 3 and the semiconductor chip 5 is laminated on one surface of the insulating film 2 (the surface on which the antenna 3 is formed) as necessary.
- the length of the antenna 3 along the long side direction of the insulating film 2 is optimized so that microwaves with a frequency of 2.45 GHz can be received efficiently (for example, 56 mm).
- the width of the antenna 3 is optimized (for example, 3 mm) so that the wireless IC tag 1 can be both compact and strong.
- the sealed semiconductor chip 5 is mounted.
- FIG. 6 and 7 are enlarged plan views showing the vicinity of the central portion of the antenna 3 in which the slit 7 is formed.
- FIG. 6 shows the front side of the wireless IC tag 1
- FIG. 7 shows the back side. Each is shown.
- the potting resin 4 and the cover film 6 for sealing the semiconductor chip 5 are not shown.
- a device hole 8 formed by punching out a part of the insulating film 2 is formed in the middle of the slit 7 formed in the antenna 3, and the semiconductor chip 5 is formed in the center of the device hole 8. It is arranged in the part.
- each of these Au bumps 9a, 9b, 9c, 9d is connected to a lead 10 that is formed integrally with the antenna 3 and whose one end extends inside the device hole 8.
- the two leads 10 extend inwardly of the device hole 8 of the antenna 3 divided into two by the slit 7, and are electrically connected to the Au bumps 9 a and 9 c of the semiconductor chip 5.
- Connected to The The remaining two leads 10 extend from the other side of the antenna 3 to the inside of the device hole 8 and are electrically connected to the Au bumps 9b and 9d of the semiconductor chip 5.
- FIG. 8 is a block diagram of a circuit formed on the semiconductor chip 5.
- the semiconductor chip 5 has a single crystal silicon substrate having a thickness of about 0.15 mm, and on its main surface, a reception circuit 302, a transmission circuit 303, a memory circuit 304, a pulse detection circuit 305 that operate according to a signal from a reader. Etc. are formed.
- the reception circuit 302 and the transmission circuit 303 are connected to the antenna 3 and the memory circuit 304, respectively.
- the reception circuit 302 is connected to the pulse width detection circuit 305.
- the noise width detection circuit 305 includes a resistor 306 whose resistance value is adjusted by electron beam drawing.
- the memory circuit 304 includes a ROM 307 having a storage capacity of 128 bits.
- the storage capacity of 128 bits is an example, and may be before or after that.
- the identification number of the wireless IC tag 1 is written.
- a through hole is formed in the insulating film using an electron beam drawing method in the diffusion process of the semiconductor wafer.
- FIG. 9 is a diagram showing a part of a circuit formed in the semiconductor chip 5.
- a rectifier circuit that converts electromagnetic waves into a DC power source is required.
- the rectifier circuit is realized by a combination of a capacitor and a diode, for example.
- the clock signal is demodulated, amplified by the amplifier 310, and input to the 3-bit counter 311.
- the carry of the 3-bit counter 311 is input to the 7-bit counter 312 and sequentially counted up.
- This 7-bit counter 312 is decoded by the decoder 313 to sequentially select the memory cells in the ROM307.
- FIG. 10 is an example of a waveform showing a signal from the reader.
- a signal waveform 201 having a long pulse width (T2) and a signal waveform 202 having a short pulse width (T1) information can be simply transmitted from the reader to the semiconductor chip 5.
- the page number in the semiconductor chip 5 is set in the counter or the counter is counted up by the signal waveform 201 having a long pulse width (T2).
- T2 the signal waveform 201 having a long pulse width
- T2 indicates the address position of writing, and the semiconductor chip 5 can be made to write data.
- the processing to the semiconductor chip 5 is completed in a short time by reducing the total number of pulses and reducing the ratio of long pulses to short pulses. In this case, efficiency is improved by reducing the time difference between the pulse widths of long pulses and short pulses.
- the product of the resistance value and the capacitance value may be made constant by adjusting the resistance value and / or the capacitance value of the pulse width detection circuit 305.
- FIG. 11 is a circuit diagram of the pulse width detection circuit 305.
- a power supply terminal 101 is connected to one end of the resistor 102, and an output terminal 103 is connected to the other end.
- the output terminal 103 is connected to the transistor 104 and the capacitor 105.
- Dividing resistors 111, 112, and 113 are connected to the gate input of the transistor 104, and one terminal of the dividing resistor 111 is an input terminal 107.
- One end of each of the upper metal wirings 106 and 108 and the lower metal wiring 109 is connected to the dividing resistors 111, 112, and 113. Further, there are through-hole candidate positions 110 for connecting them between the upper metal wiring 106 and the lower metal wiring 109 and between the upper metal wiring 108 and the lower metal wiring 109.
- the norse width detection circuit 305 is a circuit in which the change of the output terminal 103 depends on the product of the resistance value and the capacitance value due to the change of the input terminal 107.
- the resistance is determined by the dividing resistors 111, 112, and 113, and the capacitance is determined by the capacitor 105.
- the product of the resistance value and the capacitance value is the product of the resistance value determined by the sum of the divided resistors 111, 112, and 113 and the capacitance value determined by the capacitor 105. If this product is constant, the time setting determined by this product will be constant and can be used for signal waveform detection.
- Dividing resistors 111, 112, 113 and capacitor 105 are formed by a well-known semiconductor manufacturing process.
- the dividing resistors 111, 112, 113 are formed by a diffusion layer in the semiconductor substrate or a polycrystalline silicon film on the semiconductor substrate, and the capacitor 105 is formed by the gate capacitance of the transistor 104 or the capacitance between metal wirings. Is done.
- Dividing resistors 111, 112, 113 and capacitor 105 are not It is difficult to repeatedly manufacture at various values. Therefore, in the present embodiment, the resistor is divided into three divided resistors 111, 112, and 113, and through-hole candidate positions 110 and 114 are selected according to the finished state of the resistor to form a through-hole. To adjust the resistance value. At this time, if the through hole is formed by photolithography technology using a photomask, there arises a problem that the mask cost is generated and the design flexibility is lowered. However, by forming the through hole by using the electron beam drawing method, These problems can be avoided.
- FIG. 12 is a circuit diagram of the memory circuit 304.
- the source side of each of the 128 transistors 501 (only one is shown in the figure) constituting the ROM 307 is connected to the common line 503 via the connection point 502, and the drain side is connected to the common power line 504. It is connected.
- the gate of the transistor 501 is connected to the decode line 505 from the memory counter, so that the transistors 501 are selected in order.
- the gate of the selected transistor 501 is electrically at the H level, when the connection point 502 is short-circuited by an electron beam, a current flows between the drain and the source, and the parasitic capacitance (not shown) of the power supply line 504 The accumulated charge is discharged. Due to this discharge, the power supply line 504 becomes L level, and the memory OUT output 506 becomes H level. The power supply line 504 accumulates electric charge in the parasitic capacitance so that the gate of the transistor 501 is at the H level before the gate of the transistor 501 is at the H level. In this way, by using electron beam drawing, it is possible to freely set the short-circuited or disconnected state of the wiring.
- FIG. 13 is a plan view showing the main part of the memory circuit 304
- FIG. 14 is a cross-sectional view taken along the line AA in FIG.
- a word line 503 constituting a part of the upper metal wiring is connected to the source wiring 512 through a through hole 511 formed in the interlayer insulating film 510.
- the gate electrode 513 is shared by a plurality of transistors (memory cells) constituting the ROM (307).
- the identification number is written by forming a through hole 511 with an electron beam at a through hole candidate position of the interlayer insulating film 510.
- FIG. 15 is a flowchart showing manufacturing steps of the circuit shown in FIG. First, elements (transistors, resistors, capacitors) constituting a circuit are formed by a semiconductor wafer diffusion step (step 201). At this time, the memory circuit 304 includes a transistor constituting the ROM 307, etc. And a resistor 306 and the like are formed in the pulse width detection circuit 305.
- elements transistor, resistors, capacitors
- the electrical resistance value of the resistor 306 formed in the pulse width detection circuit 305 is measured (step 202).
- the resistance value is measured using a known probe or the like.
- some of the resistors 306 formed in the semiconductor wafer are selected, the resistance values are measured, and the finished state is quantified.
- the deviation from the standard force is obtained based on this value, and it is determined whether or not the resistance value is adjusted. If it is determined that adjustment is necessary, a resistance value is set, and the length of the resistance 306 corresponding to this resistance value is obtained. Then, the position pattern of the through hole is determined based on the resistance length (step 203).
- FIG. 16 is a plan view showing through hole candidate positions formed by electron beam drawing.
- the memory circuit 304 has a through-hole candidate position 114 between the source wiring 512 and the word line 503 shown in FIG. 14, and the pulse width detection circuit 305 has the lower metal wiring 109 and the upper layer shown in FIG.
- a resistor 306 shown in FIG. 16 corresponds to the divided resistors 111, 112, and 113 shown in FIG.
- FIG. 17 is a cross-sectional view showing pulse width detection circuit 305 at the time when step 201 shown in FIG. 15 is completed.
- a portion indicated by a broken line in the interlayer insulating film 510 is a through hole candidate position 110.
- 18 is a cross-sectional view showing the memory circuit 304 at the time when the step 201 shown in FIG. 15 is completed.
- a portion indicated by a broken line in the interlayer insulating film 510 is a through hole candidate position 114.
- step 202 shown in FIG. 15 the electric resistance value of the resistor 306 is measured, and in step 203, the through hole position pattern is determined.
- a random number is generated by the program and the position of the through hole is determined.
- through-holes 115 are formed in the interlayer insulating film 510 of the Norse width detection circuit 350 using an electron beam drawing method.
- a through hole 511 is also formed in the interlayer insulating film 510 of the memory circuit 304.
- Fig. 22 and Fig. 23 Show J U, Snoley Honore 115, 511
- a word line 503 is formed on the interlayer insulating film 510 of the memory circuit 304.
- the resistance value of the pulse width detection circuit 305 is adjusted by the electron beam drawing method using the process of writing the identification number unique to the wireless IC tag 1 into the ROM (307) of the memory circuit 304. By doing so, the wireless IC tag 1 can be improved in functionality without causing an increase in cost due to an increase in the number of processes and photomasks.
- the present invention can be applied to enhancement of functionality of a wireless IC tag.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Semiconductor Integrated Circuits (AREA)
- Semiconductor Memories (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007504593A JP4724708B2 (ja) | 2005-02-24 | 2005-02-24 | 無線icタグ |
| PCT/JP2005/003025 WO2006090459A1 (ja) | 2005-02-24 | 2005-02-24 | 無線icタグおよびその製造方法 |
| US11/722,942 US7800200B2 (en) | 2005-02-24 | 2005-02-24 | Wireless IC tag and method for manufacturing same |
| TW095100624A TW200636596A (en) | 2005-02-24 | 2006-01-06 | Wireless IC tag and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2005/003025 WO2006090459A1 (ja) | 2005-02-24 | 2005-02-24 | 無線icタグおよびその製造方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006090459A1 true WO2006090459A1 (ja) | 2006-08-31 |
Family
ID=36927110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/003025 Ceased WO2006090459A1 (ja) | 2005-02-24 | 2005-02-24 | 無線icタグおよびその製造方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7800200B2 (ja) |
| JP (1) | JP4724708B2 (ja) |
| TW (1) | TW200636596A (ja) |
| WO (1) | WO2006090459A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009123035A (ja) * | 2007-11-16 | 2009-06-04 | Hitachi Ltd | 半導体装置 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007060629A2 (en) * | 2005-11-24 | 2007-05-31 | Nxp B.V. | Data carrier with sensor |
| US8018323B2 (en) * | 2006-01-30 | 2011-09-13 | Baohua Qi | RFID sensor device based on pulse-processing |
| US8013714B2 (en) * | 2006-03-27 | 2011-09-06 | Baohua Qi | RFID sensor using pulse processing |
| JP4986114B2 (ja) * | 2006-04-17 | 2012-07-25 | ルネサスエレクトロニクス株式会社 | 半導体集積回路及び半導体集積回路の設計方法 |
| US8026795B2 (en) * | 2007-02-22 | 2011-09-27 | Baohua Qi | RFID sensor array and sensor group based on pulse-processing |
| JP4535209B2 (ja) * | 2008-04-14 | 2010-09-01 | 株式会社村田製作所 | 無線icデバイス、電子機器及び無線icデバイスの共振周波数の調整方法 |
| JP2013134553A (ja) * | 2011-12-26 | 2013-07-08 | Tetsuro Wada | 電子タグ |
| US10002266B1 (en) | 2014-08-08 | 2018-06-19 | Impinj, Inc. | RFID tag clock frequency reduction during tuning |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5772364A (en) * | 1980-10-24 | 1982-05-06 | Matsushita Electric Ind Co Ltd | Integrated circuit |
| JP2002184872A (ja) * | 2000-12-15 | 2002-06-28 | Hitachi Ltd | 認識番号を有する半導体装置、その製造方法及び電子装置 |
| JP2003209194A (ja) * | 2001-12-19 | 2003-07-25 | Samsung Electronics Co Ltd | 半導体装置及びその製造方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7508296B2 (en) * | 2003-08-11 | 2009-03-24 | Hitachi, Ltd. | Reading method, responder, and interrogator |
-
2005
- 2005-02-24 JP JP2007504593A patent/JP4724708B2/ja not_active Expired - Fee Related
- 2005-02-24 US US11/722,942 patent/US7800200B2/en not_active Expired - Fee Related
- 2005-02-24 WO PCT/JP2005/003025 patent/WO2006090459A1/ja not_active Ceased
-
2006
- 2006-01-06 TW TW095100624A patent/TW200636596A/zh unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5772364A (en) * | 1980-10-24 | 1982-05-06 | Matsushita Electric Ind Co Ltd | Integrated circuit |
| JP2002184872A (ja) * | 2000-12-15 | 2002-06-28 | Hitachi Ltd | 認識番号を有する半導体装置、その製造方法及び電子装置 |
| JP2003209194A (ja) * | 2001-12-19 | 2003-07-25 | Samsung Electronics Co Ltd | 半導体装置及びその製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009123035A (ja) * | 2007-11-16 | 2009-06-04 | Hitachi Ltd | 半導体装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200636596A (en) | 2006-10-16 |
| US20070285254A1 (en) | 2007-12-13 |
| JPWO2006090459A1 (ja) | 2008-07-17 |
| JP4724708B2 (ja) | 2011-07-13 |
| US7800200B2 (en) | 2010-09-21 |
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