KR101083511B1 - Wireless communication card and cover with antenna - Google Patents

Abstract

The wireless communication card according to the present invention includes a base part on which a wireless communication chip is mounted, a cover part and one end having a lead terminal part connected to an antenna terminal of the wireless communication chip when being bonded to the base part and displayed on an outer surface through a hole. By including an antenna unit connected to the lead terminal unit and printed on the outer surface of the cover unit with conductive ink, it is possible to provide an antenna capable of optimizing the output of the wireless communication chip.

Wireless Communications, microSD, MicroSD, Antennas, Covers, Conductive Ink, Silver

Description

WIRELESS COMMUNICATION CARD AND COVER WITH ANTENNA}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication card and an antenna cover, and more particularly, to a wireless communication card and an antenna cover including an antenna printed on the cover surface with conductive ink.

In recent years, as the miniaturization technology of integrated circuits has developed, many high-performance small electronic devices have been developed and rapidly spread. Examples of the small electronic device include a personal digital assistant (PDA), a mobile phone, a digital camera, a notebook personal computer, and the like.

Some of these small electronic devices include slots for exchanging and mounting various card-type devices such as memory cards and input / output cards, such as PC card slots and SD card slots, in order to increase memory and expand functions.

Secure Digital card is a very small size used for data storage devices such as car positioning systems, mobile phones, e-books, PDAs, smartphones, digital cameras, MP3 players, camcorders, personal computers, etc. Says the memory card.

An SD card is about the size of a postage stamp and weighs about 2 grams. The size of an SD card is similar to that of a multimedia card, but smaller than some older memory card formats such as smart media cards and compact flash cards. In addition, SD cards are less likely to suffer from handling mistakes by using metal-connected contacts rather than the traditional pin / plug type.

Manufacturing technology greatly influences the performance of the memory, in particular, packaging technology is one of the most important factors in the flow of manufacturing technology of the memory. There is a big difference in performance between memories of different packaging technologies. As the packaging technology continues to develop, such as the flow of DOP, TSOP, and BGA, memory is moving toward high frequency and high speed, and memory packaging has entered the CSP era with the emergence of new technologies such as CSP. Can be. Each memory is actually made up of a number of integrated circuits that are packaged, but cannot be completed unless the integrated circuit is packaged. Thus, the packaging technology is a technique for packaging an integrated circuit. In addition, packaging may refer to a case for mounting a semiconductor integrated circuit chip, and has a function of improving heat transfer performance by storing, fixing, sealing, and protecting the chip, as well as a bridge for communication between the chip's internal and external circuits. It also plays a role.

The contact lead of the chip is connected and connected to the lead of the package case, and the lead is connected and connected to another part such as a lead of the printed board. Therefore, packaging technology is very important for integrated circuit products. Similarly, a computer is required to package a CPU with high precision, and a memory is strictly required. In addition, the actual memory is not a memory having a volume or appearance generally recognized, but a package of memory chips composed of a plurality of aligned blocks. In a memory mainly composed of chips, the packaging technology not only isolates the chip from the outside but also prevents performance degradation due to corrosion of the chip circuit by impurities in the air. In addition, the good and bad packaging technology directly affects the design and manufacture of a printed circuit board (PCB) to which chips are connected and connected, which greatly affects the performance of the chip itself. In other words, the packaging technology is the exterior of the memory, and the performance of the memory is higher the better the exterior. In addition, like the processor, the memory technology is always updated. The appearance of memory continues to change, and it is becoming smaller and smaller. In addition to the appearance, the changes also significantly improved the frequency and electrical characteristics of the new chip. This is due to the packaging technology of the new memory chip.

The SD card generally performs packaging by forming a circuit pattern under such a background and attaching a cover part to a base part on which a memory chip is mounted. Recently, with the rapid development of semiconductor technology and circuit pattern technology, wireless communication chips are additionally mounted on SD cards. An antenna must also be separately provided for wireless communication through a wireless communication chip. The antenna needs a certain length according to a wireless communication method and a frequency band used, and the mounting problem of the antenna is highlighted due to the size of the SD card. It is true.

The present invention provides a wireless communication card and an antenna cover including an antenna printed on the cover surface with conductive ink.

In order to achieve the above object, a wireless communication card according to the present invention includes a base part on which a wireless communication chip is mounted, and a lead terminal part connected to an antenna terminal of the wireless communication chip when the base part is bonded and expressed on an outer surface through a hole. The provided cover part and one end may include an antenna part connected to the lead terminal part and printed on the outer surface of the cover part by conductive ink.

In this case, the conductive ink may include silver or silver ions.

In addition, the base portion and the cover portion may satisfy the microSD standard. Here, the antenna portion may be formed on the surface of the handle portion formed in the cover portion. In addition, the antenna unit may be formed on the side of the handle portion formed in the cover portion.

In addition, the antenna unit may be coated.

The wireless communication chip may be a ZigBee communication chip.

In addition, the antenna unit may have a wave shape or 'ㄹ' shape.

In addition, a memory chip may be further mounted on the base portion.

In addition, the base unit may further include an internal antenna connected between the antenna terminal and the lead terminal of the wireless communication chip, the antenna unit may have a length that supplements the antenna performance of the internal antenna.

On the other hand, the antenna combined cover according to the present invention is a connection terminal portion formed on the bonding surface with the base portion, the lead terminal portion extending from the connection terminal portion and expressed through the hole on the opposite surface of the bonding surface and printed with conductive ink on the opposite surface One end may include an antenna unit connected to the lead terminal unit.

In this case, the conductive ink may include silver or silver ions.

In addition, the antenna unit may have a wave shape or 'ㄹ' shape.

In addition, the antenna unit may be coated.

As described above, the wireless communication card and the antenna combined cover according to the present invention can easily satisfy the length of the antenna required by the wireless communication chip by forming the antenna on the surface in contact with the outside in the cover.

Further, by forming the antenna by printing with conductive ink, even if formed on the cover surface, the thickness is thin and does not affect the predetermined standard of the wireless communication card.

That is, according to the present invention, since the length and shape of the antenna can be formed irrespective of the position at which the circuit pattern is formed and the mounting positions of the various chips, the output of the wireless communication chip can be optimized.

Hereinafter, a wireless communication card and an antenna combined cover according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic diagram showing a wireless communication card according to the present invention.

The wireless communication card shown in FIG. 1 is connected to the base unit 110 on which the wireless communication chip 170 is mounted, connected to the antenna terminal 171 of the wireless communication chip when bonded to the base, and is displayed on the outer surface through a hole. The cover unit 130 including the lead terminal unit 131 and one end thereof is connected to the lead terminal unit and includes an antenna unit 150 printed on the outer surface of the cover unit by conductive ink. The wireless communication card according to the present embodiment completes the packaging by joining the base portion and the cover portion.

The base unit 110 is mounted with a wireless communication chip 170, and various circuit patterns are formed for the normal operation of the wireless communication chip. In addition, a terminal (not shown) for connecting to an external device is also formed. The terminal is generally formed on the side opposite to the side to which the cover is joined. The body of the base part shall be of insulating material.

The wireless communication chip 170 is a semiconductor chip in which various devices for performing wireless communication, such as infrared rays, Bluetooth, and ZigBee, are integrated and mounted on a circuit pattern formed in the base portion. The wireless communication chip 170 may be directly connected to the antenna according to an element included therein, or may be connected to the antenna via a predetermined external element except for the internal antenna. The antenna terminal of the radio communication chip mentioned in this embodiment shall also include the latter case. That is, the antenna terminal of the wireless communication chip may refer to the antenna connection terminal of a predetermined external element except for the internal antenna.

The cover 130 is bonded to the base 110 during packaging to form an appearance of the wireless communication card together with the base. The cover part includes a lead terminal part 131 connected to the antenna terminal 171 of the wireless communication chip on the bonding surface with the base part and exposed on the outer surface.

The lead terminal unit 131 is an element that is exposed to the outside after the cover unit and the base are joined to each other, and the opposite end of the lead terminal unit 131 is connected to the antenna terminal of the wireless communication chip. Since the antenna terminal of the wireless communication chip is mounted on the base part, the opposite end of the part exposed to the outside should be located at the junction surface of the cover part. That is, both ends of the lead terminal portions are located on opposite surfaces of the cover and are connected to each other, so that they may be arranged through holes.

Therefore, the cover portion is formed with a hole (not shown) through which the lead terminal portion passes.

In FIG. 1, a right side view of the cover 130 is shown below. A projection portion joined to the antenna terminal 171 of the wireless communication chip and a lead terminal portion 131 extending to the projection portion and being displayed on the outer surface of the cover through a hole. Is shown.

The protrusion may be adaptively changed according to the shape, installation position, and installation height of the wireless communication chip antenna terminal. Therefore, it does not necessarily need to be formed in projection shape. When the antenna terminal of the wireless communication chip is spaced apart from the lead terminal portion 131, an extension terminal 111 for connecting the antenna terminal and the lead terminal portion of the wireless communication chip may be formed. The extension terminal may be formed in the base portion, or may be formed in the joining surface of the cover portion, but is preferably formed in the base portion in which the circuit pattern is formed.

In summary, the cover part is a structure in which the lead terminal part electrically connected to the antenna terminal of the wireless communication chip is exposed on the outer surface through the hole.

The antenna unit 150 is a pattern of conductive ink printed on the outer surface of the cover unit. In order to function as an antenna of the wireless communication chip mounted on the base part, the antenna part must be connected to the antenna terminal of the wireless communication chip, and has a structure separated by a cover part positioned between the two. Therefore, it is to be connected to the antenna terminal of the wireless communication chip through the cover part, but uses the lead terminal part 131 already provided in the cover part. That is, by connecting one end of the antenna unit to the lead terminal unit 131, the connection with the antenna terminal of the wireless communication chip is made. The antenna unit is formed to an appropriate length in consideration of the communication method and the band of the wireless communication chip. If there is an extension terminal 111 that can function as an antenna, the length of the antenna unit may be determined in consideration of the length of the extension terminal.

The antenna unit 150 may be disposed at various positions on the outer surface of the cover. However, it is desirable to consider the function guarantee of the antenna unit and the characteristics of the wireless communication card. By forming the antenna unit on the outer surface of the cover, as a result, the antenna is formed on the outer surface of the wireless communication card, and accordingly, the shape or length of the antenna can be easily changed. When the antenna is formed on the joining surface of the base portion or the cover, various elements and circuit patterns including the wireless communication chip mounted on the base portion must be avoided, and thus the length or shape of the antenna is not easily changed.

FIG. 7 is a schematic diagram illustrating a base of a conventional microSD card. In the base 10 illustrated in FIG. 7, terminals and circuit patterns for connecting to an external device are formed, and an internal antenna 13 is formed at a portion of a side thereof. Is formed. The wireless communication chip is mounted on the circuit pattern. Since microSD cards are generally used as memory cards, memory chips are also mounted on circuit patterns. The micro SD card has a size of 15 mm in width and 11 mm in size, and the space is restricted due to the arrangement of wireless communication chips, memory chips, and various elements and circuit patterns within the standard. Therefore, the space allowed for the internal antenna is not available. In order to solve this problem, a separate antenna chip may be mounted, but this also presents a problem of increased cost and difficulty in adjusting characteristics. In particular, when the wireless communication chip supports a communication method such as ZigBee that needs to provide a certain length of antenna, a situation in which some communication functions may be damaged by not providing a sufficient antenna length.

That is, in the conventional microSD card, the length or shape of the antenna cannot be optimized for the wireless communication chip. However, according to the present exemplary embodiment in which the antenna unit is formed outside the cover, it is possible to provide an antenna optimized for the wireless communication chip. In addition, since the antenna unit is exposed to the outside, the antenna performance is superior to that of the antenna disposed between the base unit and the cover unit. In order to maintain the advantages of the wireless communication card according to the present embodiment, it is preferable that the antenna unit is formed at a location that is exposed to the outside, and may not be displayed to the outside depending on the characteristics of the wireless communication card.

In general, a wireless communication card is inserted and used in a predetermined device. If an antenna part is formed in the inserted part, the wireless communication card may not be externally displayed by the device from the standpoint of the antenna part. Therefore, the antenna unit is preferably formed in the handle portion except for the insertion portion that is inserted into the predetermined device in the wireless communication card.

For example, when the base part and the cover part satisfy the microSD standard, that is, in the case of the microSD card, the antenna part is formed in the handle part 133 which is convexly formed on the opposite part of the insertion part as shown in FIG. 2. Can be formed. The handle part 133 corresponds to a part exposed to the outside regardless of an insertion depth that may be different for each device into which the microSD card is inserted. Therefore, if the antenna unit is formed in the handle portion, it is possible to ensure the performance of the antenna unit. However, if formed on the surface (upper surface) of the outer surface (surface exposed after bonding with the base portion) as shown in Figure 1 or 2, there is a possibility that the antenna portion is damaged by the user, as shown in Figure 3 An antenna unit may be formed on the side surface. Of course, in this case, the lead terminal portion is also preferably formed on the side of the handle portion.

On the other hand, the conductive ink forming the antenna portion should contain a conductive material such as silver or silver ions.

The conductive ink is formed by printing (printing method) or thermal transfer printing method on the outer surface of the cover, and the length and pattern of the formed antenna can be appropriately applied to the wireless communication chip. For example, the antenna unit may have various shapes such as a pad type and a gate type.

On the other hand, a memory chip may be additionally mounted on the base portion. In such a case, the wireless communication card may function as a memory card. If a memory chip is provided in the base part and the cover part of the aforementioned micro SD standard, it may be considered that the wireless communication function is added to the micro SD card having a memory card function.

Since the antenna portion is formed on the outer surface of the cover, there is a possibility of shock by the user or corrosion by the external environment, and therefore, the antenna portion is preferably coated. Of course, the entire cover may be coated, including the antenna unit.

The wireless communication chip can support a variety of methods. Especially, in case of the ZigBee communication chip, the antenna can be sufficiently secured to optimize the performance of the ZigBee communication chip. ZigBee (Zigbee) is a wireless technology specification based on IEEE 802.15.4 (PHY, MAC). It is based on the IEEE 802.15.4 standard and defines a higher level communication protocol. Direct is intended to use IEEE 802.15.4 low-power digital radios for wireless personal networks (WPANs), such as wireless headphones. Unlike other wireless personal networks (WPANs) such as Bluetooth, Zigbee is a relatively inexpensive and simple technology. ZigBee is optimized for low data transfers, low power consumption, and secure networking.

ZigBee requires an antenna like other wireless communication methods, and the length and pattern of the antenna should be formed in consideration of the frequency band. However, when space limitations are severe, such as a wireless communication card, it is not easy to install an antenna for optimal performance. In particular, such a problem is more severe in a small card such as a microSD card.

However, according to the present embodiment, the antenna can be formed on the outer surface of the cover where no other circuit elements, chips, or circuit patterns exist, so that the antenna can be formed so that the wireless communication chip exhibits optimal performance. First, a sufficient antenna length can be secured, and then an optimal antenna pattern can be formed.

For example, in the case where the antenna unit 150 is formed in a wave shape or a 'd' shape as shown in FIG. 4, the performance of the wireless communication chip is optimized through experiments. In particular, the effect was remarkable when applied to the card of the micro SD standard. Also, as mentioned above, it is desirable to form the handle portion, more specifically on the surface or end side adjacent to the tip of the handle portion.

FIG. 5 is a schematic diagram illustrating a base unit 110 of a wireless communication card according to another exemplary embodiment of the present invention. Referring to FIG. 5, an internal antenna 113 is disposed between an antenna terminal 171 and a lead terminal of the wireless communication chip 170. Is connected.

In FIG. 5, the extension terminal 111 is disposed between the internal antenna and the lead terminal to connect the lead terminal. The extension terminal may be described as one end of the internal antenna, but in the present embodiment, it is shown as an extension terminal with emphasis on being connected to the lead terminal.

In the case where the internal antenna exists, the length of the antenna portion formed on the outer surface of the cover should be determined in consideration of the internal antenna. That is, the antenna unit is preferably formed to a length that supplements the antenna performance of the internal antenna.

On the other hand, the internal antenna may be an antenna chip.

An antenna chip refers to a laminate and packaging of one or more substrates on which an antenna pattern is formed.

As described above, according to the present embodiment, the antenna unit is formed on the outer surface of the cover to easily adjust and change the length and pattern of the antenna, thereby optimizing the performance of the wireless communication chip. In addition, even when using the same wireless communication chip, even if the characteristics of each chip is not uniform, it is possible to easily change the antenna unit according to each characteristic. As a result, the communicable distance of the wireless communication card can be extended.

6 is a schematic view showing an antenna combined cover according to the present invention.

6, the antenna combined cover illustrated in FIG. 6 includes a connection terminal portion 233 formed on a bonding surface with a base portion, and a lead terminal portion 231 extending from the connection terminal portion and expressed through a hole (not shown) on an opposite surface of the bonding surface. And an antenna unit 250 printed on the opposite side of the bonding surface with conductive ink and having one end connected to the lead terminal unit.

The connection terminal unit 233 is connected to one of a wireless communication chip, various elements, and circuit patterns mounted on the base unit. At this time, the base mounting element to be connected to the connection terminal portion should be an element requiring an antenna. The connection terminal portion may be formed to protrude in order to be connected to an element mounted on the base portion.

The lead terminal portion 231 refers to a portion extending from the connecting terminal portion to be exposed to the outer surface of the cover (the opposite side of the bonding surface to the base portion) through the hole. It may be formed integrally with the connection terminal portion, but may be formed as a separate element and connected through a pattern.

The antenna unit 250 is formed through printing of conductive ink, and the conductive ink at this time preferably includes silver or silver ions. In other words, the conductive ink is a liquid substance in which silver ions are dissolved, and can be printed on the outer surface (including the side) of the cover with almost no thickness.

The shape of the antenna portion is preferably a wave or 'd', it is preferably formed in the handle portion except the insertion portion to be inserted into a predetermined device. In particular, it is preferably formed on the surface or end side adjacent to the end of the handle portion.

In addition, a coating treatment may be performed on the antenna unit to protect the antenna unit. At this time, the coating process may be performed only for the coating on the antenna unit, or the entire outer surface of the cover.

According to the above, the antenna combined cover according to the present embodiment can form the antenna unit irrespective of the circuit and chip formation of the base unit to be bonded. Through this, the production can be improved since it can be manufactured separately from the base and bonded to the base. For example, for a base on which a specific wireless communication chip is mounted, the circuit pattern of the base can be changed. The antenna can be provided by fabricating an antenna combined cover and adjusting only the connection terminal unit regardless of the addition of other circuit elements. In addition, the antenna length optimized for the wireless communication chip can be provided, thereby reducing the limitation of service development by increasing the communication service coverage of the wireless communication chip. In particular, improved coverage can greatly contribute to reducing the investment required to build infrastructure such as ZigBee Access Points (APs).

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Applicable to wireless communication cards.

In particular, the present invention is advantageously applied to a small wireless communication card and a memory communication memory card which are limited in space such as a micro SD card.

1 is a schematic diagram illustrating a wireless communication card in accordance with the present invention.

Figure 2 is a schematic diagram showing a state in which the antenna portion of the wireless communication card according to the present invention formed on the surface of the handle portion.

Figure 3 is a schematic diagram showing a state in which the antenna portion of the wireless communication card according to the present invention formed on the side of the handle portion.

Figure 4 is a schematic diagram showing the pattern of the antenna portion of the wireless communication card according to the present invention.

5 is a schematic diagram showing a base portion of a wireless communication card according to another embodiment related to the present invention.

Figure 6 is a schematic diagram showing a combined antenna cover according to the present invention.

7 is a schematic view showing a base portion of a conventional microSD card.

Description of the Related Art

110.Base 111.Extension terminal

113 Internal antenna 130, 230 Cover part

131, 231 ... Lead terminal part 133 ... Handle part

150, 250 ... Antenna part 170 ... Wireless communication chip

171 Antenna terminal 233 Connection terminal

Claims (14)

A base unit on which a wireless communication chip, which is a semiconductor chip in which various elements for performing wireless communication with the outside, is mounted; A cover part having a lead terminal part connected to an antenna terminal of the wireless communication chip and exposed to an outer surface through a hole when the base part is bonded; And An antenna unit having one end connected to the lead terminal unit and printed on the outer surface of the cover unit with conductive ink; Wireless communication card comprising a. The method of claim 1, And the conductive ink comprises silver or silver ions. The method of claim 1, The base part and the cover part is a wireless communication card that satisfies the microSD standard. The method of claim 3, wherein And the antenna portion is formed on a surface of a handle portion formed on the cover portion. The method of claim 3, wherein And the antenna portion is formed on a side of a handle portion formed on the cover portion. The method according to claim 1 or 3, And a memory chip mounted on the base part. The method of claim 1, The antenna unit is coated with a wireless communication card to prevent the impact caused by the user or the external environment. The method of claim 1, The wireless communication chip is a ZigBee communication chip which is a wireless technology specification based on IEEE 802.15.4. The method of claim 1, The antenna portion is a wireless communication card formed by printing the conductive ink in a wave shape or 'ㄹ' shape. The method of claim 1, The base unit further includes an internal antenna connected between the antenna terminal and the lead terminal of the wireless communication chip, And the antenna unit has a length that supplements antenna performance of the internal antenna. A connection terminal portion formed on a bonding surface between the wireless communication chip and the base portion on which a circuit pattern is formed; A lead terminal portion extending from the connection terminal portion and exposed through a hole on an opposite surface of the joining surface; And An antenna unit printed on the opposite side of the bonding surface with conductive ink and having one end connected to the lead terminal unit; Combined antenna cover including a. The method of claim 11, And the conductive ink includes silver or silver ions. The method of claim 11, The antenna unit cover is formed by the conductive ink is printed in a wave shape or 'ㄹ' shape. The method of claim 11, The antenna unit cover is coated to prevent the impact caused by the user or corrosion by the external environment.

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