WO2016008301A1

WO2016008301A1 - I-shaped rfid radio-frequency chip connecting sheet

Info

Publication number: WO2016008301A1
Application number: PCT/CN2015/072883
Authority: WO
Inventors: 田艺儿
Original assignee: 田艺儿
Priority date: 2014-07-15
Filing date: 2015-02-12
Publication date: 2016-01-21
Also published as: CN203951011U

Abstract

An I-shaped RFID radio-frequency chip connecting sheet, characterized by comprising a PET bottom film (20), wherein aluminum foil layers (41-44) are compounded on the PET bottom film (20), and the aluminum foil layers (41-44) are arranged into four parts, respectively comprising an upper aluminum foil layer (41), a lower aluminum foil layer (43) and two middle aluminum foil layers (42, 44), wherein the upper aluminum foil layer (41) and the lower aluminum foil layer (43) are of T-shaped structures, and are correspondingly arranged on the PET bottom film (20); the two middle aluminum foil layers (42, 44) are of rectangular structures, and are correspondingly arranged in the middle part of the PET bottom film (20); a lower end of the upper aluminum foil layer (41) is connected to a valid radio-frequency chip column foot (11); an upper end of the lower aluminum foil layer (43) is connected to another valid radio-frequency chip column foot (13); and the two middle aluminum foil layers (42, 44) are respectively connected to two invalid radio-frequency chip column feet (12, 14), thereby improving the production efficiency of electrically connecting a radio-frequency chip to a radio-frequency antenna. Moreover, the radio-frequency chip connecting sheet can be used for an antenna having a transversely opened radio-frequency resonant cavity, thereby making up for the deficiency that a tie knot type radio-frequency chip connecting sheet cannot be used for an antenna having a transverse opening.

Description

I-shaped RFID RF chip connecting piece

Technical field

The utility model relates to an I-shaped RFID radio frequency chip connecting piece.

Background technique

At present, the area of the RFID radio frequency chip is getting smaller and smaller, reaching 0.5mm*0.5mm, and the area of the electrical connection pin on the chip is smaller. The process of installing the RFID radio frequency chip on the RF antenna is complicated, and the time of the anisotropic conductive adhesive is solidified. It lasts for 5-7 seconds, so the production efficiency of the RF chip mounted on the antenna is very low.

The RF chip is mounted on a standard-sized chip connection piece, that is, the electrical connection leg of the RF chip is mounted together with the chip connection piece to form a chip connection piece assembly (known as "strap" in the industry), and then mounted on different shapes of the RF antenna. on.

The size of the aluminum foil of the tie-tie RFID chip connector used in the market is 3.5*8mm, and the outer edge size is 4*9mm. Due to the limitation of the chip mounter, it is impossible to connect the chip of the 4*9mm tie knot shape. Therefore, it can only be used for the RF antenna with the longitudinal opening of the RF resonant cavity. The size of the "tie-tie" RF chip connection piece is large, which affects the aesthetic appearance of the RF product.

In addition, the "X"-shaped chip connecting piece used in the market has a small size of 4*4.5 mm, and the width of the chip connecting piece is about 1 mm, and the contact resistance with the RF antenna is large, and the accuracy of mounting the RF antenna is high. Thereby affecting the installation efficiency.

Utility model content

The purpose of the utility model is to overcome the above drawbacks and provide an I-shaped RFID radio frequency chip connecting piece. The technical problem to be solved by the utility model is to improve the production efficiency of the electrical connection between the radio frequency chip and the radio frequency antenna, and the radio frequency chip connecting piece can be The antenna used for the lateral opening of the RF resonant cavity compensates for the shortage of the "tie-tie" type RF chip connection piece which cannot be used for the laterally-opening antenna.

The technical scheme of the utility model is as follows:

An I-shaped RFID radio frequency chip connecting piece, characterized in that it comprises a PET base film, and an aluminum foil layer is composited on the PET base film, and the aluminum foil layer is provided as four components, respectively comprising an upper aluminum foil layer and a lower aluminum foil a layer and two intermediate aluminum foil layers, the upper aluminum foil layer and the lower aluminum foil layer are T-shaped structures, correspondingly disposed on the PET base film, the two intermediate aluminum foil layers are rectangular structures, correspondingly disposed in the middle of the PET base film The upper aluminum foil layer, the lower aluminum foil layer and the two intermediate aluminum foil layers have an I-shaped structure and are uniform in height. The upper aluminum foil layer has a lower end connected to an RF chip effective leg, and a lower aluminum foil layer has an upper end thereof. Another RF chip is connected to the active leg, and two intermediate aluminum foil layers are respectively connected to two invalid RF chip legs.

The upper end of the upper aluminum foil layer and the lower end of the lower aluminum foil layer have a length of 4 mm, a width of 1 mm, and an area of 1 mm * 4 mm = 4 mm 2 .

According to the above structure and technical solution, the beneficial effects of the utility model are as follows:

1. The column foot of the RF chip is fixed on the chip connection piece to become the RF chip connection piece assembly, and the RF chip column foot is extended by about 2 mm, which improves the production efficiency of the electrical connection with the RF antenna;

2. The I-shaped RF chip connecting piece can be used for the antenna of the horizontal opening of the RF resonant cavity, which makes up for the shortage of the "tie-tie" type RF chip connecting piece which cannot be used for the lateral opening antenna;

3. The size of the I-shaped RF chip connecting piece is small (4*4mm), suitable for small-sized antennas, and the appearance is better than the “tie-tie” chip connection piece;

4. The connection area of the I-shaped RF chip connecting piece and the RF antenna reaches 1*4mm, which is 4 times higher than the connection area of the "X" type RF chip connecting piece and the antenna. The contact resistance is small and the RF antenna quality is good;

5. The area connecting the I-shaped RF chip connecting piece and the antenna is 1*4mm. In the installation, the tolerance of the I-shaped RF chip connecting piece is ±1mm, which greatly improves the production efficiency;

6. Rotate the I-shaped chip connecting piece by 90 degrees to become the "H" type chip connecting piece, which can be applied to the RF antenna with the longitudinal opening of the RF resonant cavity.

DRAWINGS

Figure 1-1 shows the outline structure of the RF chip.

Figure 1-2 is a side elevational view of Figure 1-1.

Figure 2-1 shows the outline structure of the tie-tie RF chip connector used in the market.

Figure 2-2 is a side view of Figure 2-1.

Figure 3-1 shows the outline structure of the X-type RF chip connector used in the market.

Figure 3-2 is a side view of Figure 3-1.

Figure 4-1 is a structural view of the I-shaped chip connecting piece of the present invention.

Figure 4-2 is a side view of Figure 4-1.

Figure 5-1 shows the chip on the chip connection piece of the present invention. Into a structural drawing.

Figure 5-2 is a side elevational view of Figure 5-1.

Figure 6-1 is a connection diagram of the chip connector assembly and the RF antenna of the present invention.

Figure 6-2 is a cross-sectional view taken along line A-A of Figure 6-1.

Fig. 7 is a structural view showing an enlarged side section of D.

In the figure, 10, chip body; 11, effective column foot; 12, invalid column foot; 13, effective column foot; 14, invalid column foot; 20, PET film; 21 (22, 23, 24), tie knot Aluminum foil layer of chip connecting piece; 31 (32, 33, 34), X-type chip connecting piece aluminum foil layer; 41 (42, 43, 44), I-shaped chip connecting piece aluminum foil layer; 50, RF antenna substrate PET film; 51. RF antenna aluminum foil layer; 52, RF antenna cavity opening.

detailed description

As shown in FIGS. 1-1 and 1-2, the radio frequency chip is provided with four

legs

11 , 12 , 13 , and 14 on the chip body 10 , wherein 11 and 13 are chip effective legs, and 12 and 14 are chip invalid columns. foot.

As shown in Figures 2-1 and 2-2, the size of the aluminum foil of the tie-tie RFID chip connector used in the market is 3.5*8mm, the outer edge size is 4*9mm, and 20 is a PET film as a chip connection piece. Base film, thickness 0.05 mm, 21, 22, 23, 24 is the aluminum foil layer of the chip connecting piece, thickness 0.01 mm, 21, 23 and the chip

effective legs

11, 13 are fixed by conductive adhesive, 22, 24 and the chip are invalid The

legs

12 and 14 are fixed together by a conductive adhesive. Due to the limitation of the chip mounter, the 4*9mm tie-tie chip connection piece cannot be erected, so it can only be used for the RF antenna with the longitudinal opening of the RF resonator. The "tie tie" type RF chip connection piece has a large size, which affects the appearance of the RF product.

As shown in Figures 3-1 and 3-2, the size of the "X"-shaped chip connector on the market is small, 4*4.5mm, and the width of the chip connector is about 1mm, which is compared with the contact resistance of the RF antenna. Large, the accuracy of the installation of the RF antenna is high, which affects the installation efficiency. 31, 32, 33, 34 are the X-shaped chip connecting piece aluminum foil layer, fixed on the PET base film 20, the

aluminum foil layer

31, 33 and the chip

effective column foot

11, 13 is fixed together by a conductive adhesive, and the

aluminum foil layers

32, 34 and the chip

invalid legs

12, 14 are fixedly connected by a conductive adhesive.

As shown in FIGS. 4-1 and 4-2, the composite aluminum foil on the PET base film 20 of the present invention is chemically etched to leave a shape structure as shown in FIG. 4-1, and the lower end of the upper aluminum foil layer 41 is connected to the chip leg 11 The upper aluminum foil layer 43 has its upper end connected to the chip post 13 , and the upper end of the upper aluminum foil layer 41 and the lower end of the lower aluminum foil layer 43 have an area of 1 mm * 4 mm = 4 mm 2 , which is much larger than the upper and lower end areas of the X-chip connecting piece. When connected to the RF antenna, the contact area is large, and the contact resistance is smaller, which improves the working efficiency of the connection between the chip connector assembly and the RF antenna.

The aluminum foil layers 42, 44 are used to fix the invalid column legs of the radio frequency chip, and the positively small aluminum foil layer ensures that the invalid column legs and the effective column legs are simultaneously fixed on the aluminum foil and maintain the same level.

As shown in FIGS. 5-1 and 5-2, the chip 10 is fixed on the aluminum foil layer at the center of the chip connecting piece by a conductive adhesive, and the aluminum foil layers 41 and 43 are respectively fixed to the

effective column legs

11 and 13 of the chip through the conductive adhesive. The aluminum foil layers 42 and 44 are respectively fixed to the chip

invalid legs

12 and 14 via the conductive adhesive, and the effective legs of the chip 10 are electrically connected to the aluminum foils 41 and 43. The electrical connection size of the legs of the chip 10 is expanded from 0.5*0.5 mm. 4*4 mm range, extremely easy to install on the RF antenna, solves the problem of the RF chip size is very small, the chip is installed in the RF The end of the antenna is difficult and the production efficiency is low.

As shown in FIG. 6-1, 6-2, and FIG. 7, the aluminum foil layer of the chip connecting piece assembly is pressed together with the center of the cavity opening 52 of the antenna aluminum foil layer 51 or bonded together by a conductive adhesive. The conductive aluminum foil layers 41, 43 are electrically connected to the antenna aluminum foil layer 51, and the

effective legs

11 and 13 of the RF chip 10 are electrically connected to the RF antenna cavity opening 52 of the antenna aluminum foil layer 51. The RF chip 10 is provided with RF reading and writing. Features.

Claims

An I-shaped RFID radio frequency chip connecting piece, characterized in that it comprises a PET base film, and an aluminum foil layer is composited on the PET base film, and the aluminum foil layer is provided as four components, respectively comprising an upper aluminum foil layer and a lower aluminum foil a layer and two intermediate aluminum foil layers, the upper aluminum foil layer and the lower aluminum foil layer are T-shaped structures, correspondingly disposed on the PET base film, the two intermediate aluminum foil layers are rectangular structures, correspondingly disposed in the middle of the PET base film The upper aluminum foil layer, the lower aluminum foil layer and the two intermediate aluminum foil layers have an I-shaped structure and are uniform in height. The upper aluminum foil layer has a lower end connected to an RF chip effective leg, and a lower aluminum foil layer has an upper end thereof. Another RF chip is connected to the active leg, and two intermediate aluminum foil layers are respectively connected to two invalid RF chip legs.
The I-shaped RFID radio frequency chip connecting piece according to claim 1, wherein the upper end and the lower aluminum foil layer of the upper aluminum foil layer have a lower end length of 4 mm, a width of 1 mm, and an area of 1 mm*4 mm=4. Square millimeters.