CN102156898B

CN102156898B - Chip with information identification and preparation method of chip

Info

Publication number: CN102156898B
Application number: CN 201110086856
Authority: CN
Inventors: 张春; 贺宇荟; 赵西金; 王志华
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2011-04-07
Filing date: 2011-04-07
Publication date: 2013-09-04
Anticipated expiration: 2031-04-07
Also published as: CN102156898A

Abstract

The invention provides a chip with information identification, wherein the chip comprises a label circuit, a chip antenna, a chip core and a pad ring; the label circuit comprises a radio frequency analogue circuit, a digital circuit module and a memory; the chip antenna is connected to the radio frequency analogue circuit, the radio frequency analogue circuit is connected to the digital circuit module, the digital circuit module is connected to the memory, the chip core is arranged on the centre of the pad ring and is connected to the pad of the pad ring; the preparation method comprises the following steps of: forming a FRID (Radio Frequency Identification) label circuit into a module which is the same with the width of the chip pad, then directly placing the layout of a FRID module in the position of the chip pad, placing a FRID chip antenna inside or outside the pad ring in the chip layout, and then making plate and processing to produce a chip with embedded electric identificationinformation, wherein the identification information in the chip is written into or read from the chip through a card reader. The chip with information identification and the preparation method of thechip have the advantages that the reliability for the method of embedding the identification information of the chip is high, the cost is prevented from increasing, and the chip has great applicationvalues in anti-fake, management and identification field of the chip.

Description

A kind of chip with message identification and preparation method thereof

Technical field

The invention belongs to RFID recognition technology field, be specifically related to a kind of chip with message identification and preparation method thereof.

Background technology

The identification information of chip mainly comprises the model of chip, function, technical parameter, design producer, batch etc., the identification information of traditional die mainly concentrates on three places on the market, above the chip external packing, on the encapsulation shell of chip and the last logo of chip core, the identification information of chip external packing is easily imitated, and is difficult for permanent the preservation; The identification information of chip encapsulation shell and kernel can pass through chip literal correction fluid, means such as polishing are wiped, be easy to identify again, this brings opportunity for the chip fake producer, cpu chip on the market, video card chip etc. is adulterated, fill newly with old, the phenomenon of mixing the spurious with the genuine happens occasionally, and is no lack of some mechanism and company simultaneously with the chip of others' design, polish off and change sign, exchange relevant benefit for this, in addition, the traditional die identification method adopts literal or graphical sign, quantity of information is few, and inconvenient intelligent management.

Summary of the invention

In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of chip with message identification and preparation method thereof, can utilize read write line that the identification information of chip is judged, the method reliability height that chip identification information embeds, identification information can't be copied and wipe, and provides convenient for management and the circulation of chip.

In order to achieve the above object, the technical scheme taked of the present invention is:

A kind of chip with message identification, chip 1 comprises tag circuit 2, on-chip antenna 4, chip core 8 and pad ring 3, tag circuit 2 comprises radio frequency analog circuit 5, digital circuit blocks 6 and storer 7, on-chip antenna 4 links to each other with the rf inputs mouth of radio frequency analog circuit 5, the baseband signal port of radio frequency analog circuit 5 links to each other with digital circuit blocks 6 input ports, the output port of digital circuit blocks 6 links to each other with storer 7 corresponding ports, chip core 8 places chip bonding pad ring center, and its input/output port is connected with pad on the pad ring 3.

Described storer 7 comprises ROM (read-only memory) or nonvolatile memory.

Described tag circuit 2 is passive label, arbitrary frequency range or the compatibility of frequency of operation in low frequency, high frequency 13.56MHz, ultrahigh frequency 860MHz～960MHz and microwave 2.45GHz, 5GHz.

Described on-chip antenna 4 adopts the tours antenna layout in the periphery of the chip bonding pad outside or chip core circuit.

Described tag circuit 2 layouts occupy one or more pad locations on the chip bonding pad ring.

A kind of chip production method with message identification may further comprise the steps:

A, RFID tag circuit 2 is made the module identical with the chip bonding pad width,

B, carry out laying out pattern when planning at chip to be identified 1, directly RFID module domain placed the chip bonding pad position,

C, RFID on-chip antenna 4 is placed in pad ring 3 inboards or the outside in chip layout,

D, will have an electronic tag chip through plate-making processing, produce the chip that embeds electronic mark information, utilize card reader to write or read identification information in the chip during use.

It is in order not influence the layout of original chip core circuit layout that the label domain is placed on the chip layout pad locations, can not increase the entire area of chip, thereby the cost of chip can not increase, this method for designing has versatility to the integrated electronic tag of different chips simultaneously, after can in a kind of integrated circuit fabrication process, designing electronic tag circuit and domain, directly call in different batches chip design as library unit, integrated electronic tag storage chip relevant information in the chip, be difficult for copying and wiping, can preserve for a long time, simultaneously can identify more chip information, so false proof at chip, there is very big using value in management identification field.

Description of drawings

Fig. 1 is the structural drawing of chip of the present invention

Fig. 2 is the structural representation of chip tag circuit 2 of the present invention.

Fig. 3 is the principle of work synoptic diagram of chip identification information identification of the present invention.

Fig. 4 adopts the synoptic diagram of folded antenna for chip on-chip antenna 4 of the present invention.

Fig. 5 is placed on the synoptic diagram that regular individual pen loop antenna is adopted in the pad outside for chip on-chip antenna 4 of the present invention.

Fig. 6 is placed on the inboard synoptic diagram that adopts regular individual pen loop antenna of pad for chip on-chip antenna 4 of the present invention.

Fig. 7 adopts the synoptic diagram of multi-turn loop antenna for chip on-chip antenna 4 of the present invention.

Embodiment

The present invention will be further described below in conjunction with accompanying drawing.

See figures.1.and.2, a kind of chip with message identification, chip 1 comprises tag circuit 2, on-chip antenna 4, chip core 8 and pad ring 3, tag circuit 2 comprises radio frequency analog circuit 5, digital circuit blocks 6 and storer 7, on-chip antenna 4 links to each other with the rf inputs mouth of radio frequency analog circuit 5, the baseband signal port of radio frequency analog circuit 5 links to each other with the input port of digital circuit blocks 6, the output port of digital circuit blocks 6 links to each other with storer 7 corresponding ports, chip core 8 places chip bonding pad ring center, and its input/output port is connected with pad on the pad ring 3.

Described storer 7 comprises ROM (read-only memory) or nonvolatile memory, and the identification information storage of chip is in storer 7.

Described on-chip antenna 4 adopts the tours antenna layout in the periphery of the chip bonding pad outside or chip core circuit, and with reference to Fig. 4, on-chip antenna 4 is folded antennas; With reference to Fig. 5, on-chip antenna 4 is placed on the pad outside and adopts regular individual pen loop antenna; With reference to Fig. 6, on-chip antenna 4 is placed on the regular individual pen loop antenna of the inboard employing of pad; With reference to Fig. 7, on-chip antenna 4 adopts the multi-turn loop antenna.

The principle of work of this chip is:

With reference to Fig. 3, chip identification information is stored in the storer 7, when reading chip identification information, read write line 9 sends the radiofrequency signal 10 of carrying information, on-chip antenna 4 is coupled to energy and signal extracts operating voltage and base band order through the radio frequency analog circuit 5 of tag circuit 2, operating voltage is supplied with tag circuit 2 work, the base band order is delivered to digital circuit blocks 6 decodings and is handled, if be judged as reading order, digital circuit blocks 6 reads chip identification information from storer 7, deliver to radio frequency analog circuit 5 behind the coding, send through on-chip antenna 4, thereby read write line 9 obtains the relevant identification information 11 of chip that label returns.

D, will have an electronic tag chip through plate-making processing, produce the chip that embeds electronic mark information, utilize card reader 9 to write or read identification information in the chip during use.

Claims

1. chip with message identification, it is characterized in that: chip (1) comprises tag circuit (2), on-chip antenna (4), chip core (8) and pad ring (3), tag circuit (2) comprises radio frequency analog circuit (5), digital circuit blocks (6) and storer (7), on-chip antenna (4) links to each other with the rf inputs mouth of radio frequency analog circuit (5), the baseband signal port of radio frequency analog circuit (5) links to each other with the input port of digital circuit blocks (6), the output port of digital circuit blocks (6) links to each other with the corresponding port of storer (7), chip core (8) places chip bonding pad ring center, and its input/output port is connected with pad on the pad ring (3);

Described storer (7) comprises ROM (read-only memory) or nonvolatile memory;

Described tag circuit (2) is passive label, arbitrary frequency range or the compatibility of frequency of operation in low frequency, high frequency 13.56MHz, ultrahigh frequency 860MHz～960MHz and microwave 2.45GHz, 5GHz;

Described on-chip antenna (4) adopts the tours antenna layout in the periphery of the chip bonding pad outside or chip core circuit;

Described tag circuit (2) layout occupies one or more pad locations on the chip bonding pad ring; RFID tag circuit (2) is made the module identical with the chip bonding pad width, when chip to be identified (1) carries out laying out pattern planning, directly RFID module domain is placed the chip bonding pad position.

2. a kind of chip with message identification according to claim 1, it is characterized in that: described on-chip antenna (4) is folded antenna.

3. a kind of chip with message identification according to claim 1 is characterized in that: described on-chip antenna (4) is placed on the pad outside and adopts regular individual pen loop antenna.

4. a kind of chip with message identification according to claim 1 is characterized in that: described on-chip antenna (4) is placed on that pad is inboard to adopt regular individual pen loop antenna.

5. a kind of chip with message identification according to claim 1 is characterized in that: described on-chip antenna (4) employing multi-turn loop antenna.

6. a kind of chip production method with message identification according to claim 1 is characterized in that, may further comprise the steps:

A, RFID tag circuit (2) is made the module identical with the chip bonding pad width,

B, carry out laying out pattern when planning at chip to be identified (1), directly RFID module domain placed the chip bonding pad position,

C, RFID on-chip antenna (4) is placed in pad ring (3) inboard or the outside in chip layout,