KR100927768B1 - Portable uss storage - Google Patents

Abstract

The present invention cuts both sides of a standardized and packaged flash memory to match the length of the width of the flash memory with the length of the width of the USB connector portion of the printed circuit board provided inside the portable USB storage device. By attaching the cut flash memory to the back of the printed circuit board including the USB connector portion area, the area of the printed circuit board of the conventional portable USB storage device can no longer be reduced to less than a certain area and solve the problem. To reduce the size of a printed circuit board, to provide a miniaturized portable USB storage device.

The portable USB storage device according to the present invention includes a printed circuit board serving as an internal substrate of the portable USB storage device, a USB plug having a size standardized by USB standard, and including a contact terminal for connecting to a computer and the like, and a printed circuit. The flash memory, which is cut at both sides to match the length of the width of the USB connector portion of the board, the USB controller for controlling the writing, reading and deleting of data between the flash memory and the computer, and a case for a portable USB storage device. It consists of including.

USB, printed circuit boards, flash memory

Description

Portable USB Storage {PORTABLE USB STORAGE DEVICE}

The present invention relates to a portable universal serial bus (USB) storage device, and more particularly, a cut line spaced apart at regular intervals from both sides of a packaged NAND flash memory sized in the form of a 48-pin TSOP or 52-pin TLGA. The present invention relates to a portable USB storage device which is cut along and attached to a rear surface of a printed circuit board including a USB connector portion region provided inside the portable USB storage device. In the case of the portable USB storage device according to the present invention, the length of the width of the standardized flash memory attached to the printed circuit board is the length of the width of the USB connector portion area of the printed circuit board located inside the USB plug according to the USB standard. Since it is longer, it solves the conventional problem of attaching the flash memory to the surface except the rear side of the USB connector portion area of the printed circuit board, and by omitting the minimum required area occupied by the rear surface of the USB connector portion area of the printed circuit board, The present invention relates to a portable USB storage device capable of miniaturizing the overall size of the portable USB storage device.

In general, computer systems that are widely used have the potential to lose data used daily due to various hardware or software failures. Therefore, the user performs data backup using a data storage device such as a hard disk, a magnetic tape, or an optical disk. However, these data storage devices are not capable of operating on their own, and have a disadvantage of low storage capacity compared to price.

USB (Universal Serial Bus) is a device that makes it easy to connect peripheral devices to a computer through a USB plug.It can connect more peripheral devices than the serial port, and the data transmission and reception speed is faster. Widely used.

As a peripheral using a USB plug, there is a portable USB storage device. A portable USB storage device uses a flash memory to connect to a USB port of an information terminal device such as a computer to read or write data. When a USB plug is connected to the USB port of the information terminal device, The terminal device recognizes and operates the USB storage device.

Flash memory used in portable USB storage devices is a non-volatile memory that stores data continuously even after the power is turned off. The NAND flash memory and NOR ( Nor) divided into flash memory.

Unlike code storage NOR flash memory in which cells are arranged in parallel, NAND flash memory is data storage flash memory in which cells are arranged in series. NAND flash memory is easier to enlarge than NOR flash memory, but it is slow. Therefore, NOR flash memory is mainly used as a memory of mobile phones, and NAND flash memory is used as a memory of portable information communication devices such as MP3 players, Internet phones, digital cameras, digital camcorders, portable storage devices, and the like. Therefore, NAND flash memory is used for the portable USB storage device.

NAND flash memory is divided into small blocks and large blocks according to size. Small blocks are used for flash memory having a relatively small storage capacity of 256 Mb or 512 Mb, and large blocks are used for flash memory having a large storage capacity of 1 Gb or more. Therefore, large block NAND flash memories are used for portable USB storage devices, and large block NAND flash memories with large storage capacities are mostly packaged in a 48-pin TSOP form and a 52-pin TLGA form.

1 is an exploded perspective view showing the components of a conventional portable USB storage device.

Referring to FIG. 1, a conventional portable USB storage device has a printed circuit board (PCB) 10 serving as an internal substrate of a portable USB storage device, a size standardized by a USB standard, and a computer. USB plug 20 including contact terminal 12 for connection, flash memory 40 capable of storing external data, data writing, reading, deleting, etc. between flash memory 40 and computer, etc. It is comprised by including the USB controller 30 to control, and the case 50 for portable USB storage devices.

2 (a) and 2 (b) are plan views illustrating positions of components of a portable USB storage device attached to front and rear surfaces of a printed circuit board provided in a conventional portable USB storage device.

1 and 2 (a) and (b), the USB plug 20 is provided in the USB connector portion region 25 of the printed circuit board 10 provided inside the portable USB storage device. The USB plug 20 is formed with an exterior guide 21 that forms a hexahedral exterior so as to be stably inserted into a USB port provided in a computer, and the like, and electrical signals transmitted from the USB port are not lost on one surface of the exterior guide 21. An insulating member 22 made of an insulating material is formed so that the upper surface of the insulating member 22 is provided with a USB contact terminal 15 capable of receiving an electrical signal.

According to the USB standard, the width A of the exterior guide 21 of the USB plug 20 has a length of 12.00 mm, and the height of the exterior guide is standardized to have a length of 4.00 mm. Moreover, the height of the insulating member 22 formed in one surface in the exterior guide is comprised so that it may have a length of 2 mm-3 mm. Accordingly, the length B of the width of the USB connector portion region 25 of the printed circuit board 10 inserted into the insulating member 22 to form the contact terminal 15 is determined by the standardization of the exterior guide 21. It is formed narrower by 0.50 mm to 1.00 mm length than the length A of the width.

The flash memory 40 used in the conventional portable USB storage device uses a NAND flash memory packaged in a 48 pin TSOP form or a 52 pin TLGA form. The width C1 of the NAND flash memory packaged in 48-pin TSOP form or 52-pin TLGA form is standardized to 12.00 mm in length according to the semiconductor standard specification. Accordingly, the length C1 of the width of the flash memory 40 is formed to be narrower by 0.50 mm to 1.00 mm than the length A of the width of the external guide 21 of the standardized USB plug 20. ) Is longer than the length B of the width of the USB connector portion area 25. Thus, in the case of the conventional portable USB storage device, the flash memory 40 is attached to the back side of the printed circuit board 10 except for the USB connector portion area 25.

In addition, the USB controller 30 is attached to the front surface of the printed circuit board 10 having the USB contact terminal 15 formed on one side thereof, except for the USB connector portion region 25. Therefore, the conventional portable USB storage device has a case (a) in a printed circuit board (10) provided with a USB plug (20) in the USB connector portion area (25) and with a USB controller (30) and a flash memory (40). 50).

In the conventional portable USB storage device, the length C1 of the width of the flash memory 40 specified by the semiconductor standard is smaller than the length B of the width of the USB connector portion region 25 of the printed circuit board 10. Since it was long, the flash memory 40 could not be attached to the back surface of the printed circuit board 10 containing the USB connector part area | region 25. FIG. Therefore, the area of the printed circuit board 10 provided inside the portable USB storage device cannot be reduced to the area equal to or smaller than the sum of the area of the USB connector portion area 25 and the area occupied by the flash memory 40. Therefore, there is a problem that the portable USB storage device requiring miniaturization can no longer be miniaturized to a predetermined size or less.

In addition, although not shown in the drawings, in order to solve the problem of conventional miniaturization of a portable USB storage device, a semiconductor chip is attached to a rear surface of a printed circuit board including a USB connector portion region, and a USB connector portion region of the printed circuit board is provided. A method of directly packaging a semiconductor chip to match the width of the circuit was used. However, the conventional method has a problem in that the printed circuit board and the semiconductor chip are integrally packaged and it is impossible to separate the flash memory from the printed circuit board. Therefore, when the printed circuit board or the flash memory is defective, there is a problem in that it is not easy to separate, repair or replace the printed circuit board or the flash memory.

The present invention has been made to solve the various problems as described above, in the case of a conventional portable USB storage device, the present invention is more than the length of the width of the USB connector portion area of the printed circuit board provided inside the portable USB storage device Since the width of the standardized flash memory is longer, it is inevitable to attach the flash memory to the rear surface of the printed circuit board except for the USB connector area, and thus the area of the printed circuit board is no longer smaller than a predetermined area. It is an object of the present invention to solve a problem that cannot be reduced and to provide a miniaturized portable USB storage device.

In the case of the conventional portable USB storage device, in order to minimize the area of the printed circuit board provided in the portable USB storage device, the semiconductor chip is attached to the back of the printed circuit board including the USB connector portion area, An object of the present invention is to provide a portable USB storage device capable of solving the problem of separating the printed circuit board and the flash memory by packaging the semiconductor chip and the printed circuit board as a whole.

The present invention is a conventional portable USB storage device, by using a method of integrally packaging a printed circuit board and a semiconductor chip provided in the portable USB storage device, it is impossible to separate the printed circuit board and the flash memory, It is an object of the present invention to provide a portable USB storage device that can solve a conventional problem in which a printed circuit board or a flash memory is defective, which is not easy to separate, repair, or replace only the printed circuit board or the flash memory. do.

Portable USB storage device according to the present invention for achieving the above object, the printed circuit board 100 to serve as an internal substrate of the portable USB storage device; A USB plug 120 including a contact terminal 105 connected to a computer or the like; A flash memory 140 connected to the computer or the like through the USB plug 120 to store external data; A USB controller 130 for controlling the writing, reading and deleting of data between the flash memory 140 and a computer; And a case (150) for protecting the printed circuit board (100) to which the flash memory (140) and the USB controller (130) are attached.

The USB plug 120 is installed in the USB connector portion region 125 of the printed circuit board 100,

The USB controller 130 is attached to the front surface of the printed circuit board 100 except the area of the USB connector portion 125,

The flash memory 140 is cut at both sides to match the length B of the width of the region of the USB connector portion 125 of the printed circuit board 100, and includes a USB connector portion region 125. It is characterized in that attached to the back of the (100).

According to the portable USB storage device according to the present invention, both sides of a standardized and packaged flash memory are cut so that the length of the width of the flash memory matches the length of the width of the USB connector portion of the printed circuit board, and both sides are cut. By attaching the flash memory to the rear surface of the printed circuit board including the USB connector portion region, in the conventional case, the flash memory can only be attached to the rear surface of the printed circuit board except the USB connector portion region. There is a remarkable effect that can solve the problem that can no longer be reduced to less than a certain area, and to miniaturize the portable USB storage device.

According to the portable USB storage device according to the present invention, by attaching the flash memory cut on both sides to the back of the printed circuit board including the USB connector portion area, in the case of the conventional portable USB storage device, including a USB connector portion area In order to place the flash memory on the back side of the printed circuit board, the semiconductor chip is attached to the back side of the printed circuit board including the USB connector portion area, and the semiconductor chip is packaged integrally with the printed circuit board, so that the printed circuit board and the flash memory are There is a remarkable effect that can solve the problem that it was difficult to separate.

In addition, according to the portable USB storage device according to the present invention, the flash memory attached to the rear surface of the printed circuit board can be easily attached and detached from the printed circuit board, so that either the printed circuit board or the flash memory is defective. If so, there is a remarkable effect that only a defective printed circuit board or flash memory can be removed and repaired or replaced.

Hereinafter, the advantages, features and preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view showing components of a portable USB storage device according to the present invention, and FIGS. 4A and 4B are front views of printed circuit boards provided inside the portable USB storage device according to the present invention. The top view shows where the components of the portable USB storage device are attached to the rear side.

3 and 4 (a), (b), a portable USB storage device according to the present invention is a printed circuit board (PCB) 100, USB that serves as an internal substrate of the portable USB storage device USB plug 120 having a size standardized according to standard regulations, including a contact terminal 105 for connecting to a computer, etc., a flash memory 140 capable of storing external data, a flash memory 140 and a computer, etc. And a USB controller 130 for controlling the writing, reading, and deletion of data among them, and a case 150 for a portable USB storage device.

The printed circuit board 100 according to the present invention serves as an internal board of the portable USB storage device, and at one end of the printed circuit board 100, a USB connector portion region 125 in which the USB plug 120 is installed is located. Four contact terminals 105 are formed on the front surface of the USB connector portion region 125. Four contact terminals 105 formed in the USB connector portion region 125 of the printed circuit board 100 of the present invention include a driving power supply terminal, a negative data terminal, a positive data terminal, and a ground terminal in accordance with USB standard provisions. It transmits and receives data from a computer and so on, and receives power from the computer.

The USB plug 120 according to the present invention is installed in the USB connector portion region 125 of the printed circuit board 100. The USB plug 120 is formed with an exterior guide forming a hexahedral exterior to be stably inserted into a USB port provided in a computer, etc., and an insulation made of an insulating material so that electrical signals transmitted from the USB port are not lost on one surface of the exterior guide. The member is formed, and the contact terminal 105 which can receive an electrical signal is formed in one surface of the insulating member.

According to the USB standard, the width A of the exterior guide of the USB plug 120 has a length of 12.00 mm, and the height of the exterior guide is standardized to have a length of 4.00 mm. In addition, the height of the insulating member formed on one surface in the exterior guide is configured to have a length of 2 mm to 3 mm. Accordingly, the length B of the width of the USB connector portion region 125 of the printed circuit board 100 inserted into the insulating member to form the contact terminal 105 is the length A of the width of the normalized exterior guide. Narrower than 0.50 mm to 1.00 mm in length.

Although not shown in the figure, another form of the USB plug 120 according to the present invention is a slim USB plug. The slim USB plug is a USB plug that omits an external guide, exposes a contact terminal of a printed circuit board to the outside, and forms an insulating member in a USB connector portion region excluding the contact terminal. Since the slim USB plug also includes the USB connector portion region of the printed circuit board in the insulating member, the length of the width of the USB connector portion region of the printed circuit board is formed to be 0.5 mm to 1.00 mm narrower than the width of the slim USB plug.

The USB controller 130 according to the present invention controls the transmission and reception of data between the computer and the flash memory 140 when the USB plug 120 is connected to a USB port such as a computer. The USB controller 130 is attached to the front surface of the printed circuit board 100 except for the USB connector portion region 125 and controls the writing, reading, and deletion of data between the flash memory 140 and the computer.

In the flash memory 140 according to the present invention, both sides are cut to match the length B of the width of the USB connector portion region 125 of the printed circuit board 100, thereby printing including the USB connector portion region 125. It is attached to the back of the circuit board 100. The flash memory 140 of the portable USB storage device according to the present invention can cut and use a large-capacity NAND flash memory standardized in a 48-pin TSOP form or a 52-pin TLGA form.

The width C1 of the flash memory standardized in the 48-pin TSOP form or the 52-pin TLGA form is standardized to a length of 12.00 mm by the semiconductor standard specification. Accordingly, the length C1 of the width of the standardized flash memory is formed by 0.50 mm to 1.00 mm longer than the length B of the width of the USB connector portion area 125 of the printed circuit board 100, thereby providing a 48-pin TSOP. Or a flash memory standardized in a 52-pin TLGA form cannot be attached to the back surface of the printed circuit board 100 including the USB connector portion region 125 without both sides being cut.

The portable USB storage device according to the present invention, by cutting both sides of the standardized flash memory, the length (C2) of the width of the cut flash memory 140 to the USB connector portion area 125 of the printed circuit board 100 The flash memory 140 having both sides cut to the width B is attached to the rear surface of the printed circuit board 100 including the USB connector portion region 125.

A process of cutting both sides of the flash memory according to the present invention and attaching it to the printed circuit board will be described together with reference to FIG. 5.

5A and 5B are plan views showing forms before and after cutting both sides of a flash memory packaged in a 48-pin TSOP form attached to a printed circuit board of a portable USB storage device according to the present invention.

Referring to FIGS. 5A and 5B, a standardized flash memory 145 packaged in a 48-pin TSOP form and before cutting is provided with a plurality of leads 142 electrically connecting the printed circuit board 100 and the semiconductor chip 141. The semiconductor chip 141 for storing external data is attached to the semiconductor chip 141, and the semiconductor chip 141 is packaged with an encapsulant so as to be easily mounted on the printed circuit board 100.

The standard packaging specification of the 48-pin TSOP type of the standardized flash memory 145 before cutting is that the horizontal side has a length of 19.80 mm to 20.20 mm and the vertical side has a length (C1) of 11.90 mm to 12.10 mm. Form. Among the packaging of the TSOP type is packaged so that a plurality of leads 142 are formed on a relatively short vertical side, and packaging so that a plurality of leads 142 are formed on a relatively long horizontal side. 2 forms. The flash memory 140 used in the portable USB flash drive according to the present invention cuts and uses the flash memory 145 which is standardized and packaged in the form of a 48-pin TSOP 1.

5A and 5B, the flash memory 145 standardized and packaged in the form of a 48-pin TSOP 1 according to the present invention includes a relatively short vertical side of four sides of a rectangular flash memory 145. Twenty four leads 142 are formed, respectively. The lead 142 according to the present invention serves to connect the flash memory 145 and the printed circuit board 100, the length of the width L1 of the lead 142 has a length of 0.20 mm, the lead 142 ) And the gap L2 between the leads 142 are configured to be spaced apart by a length of 0.30 mm.

The flash memory 145 before cutting according to the present invention includes a plurality of NC (No Connection) pins formed by being spaced apart by a length L3 of 0.1 mm from both ends of the longitudinal sides of the flash memory 145 having a rectangular shape. 143). The N.C pin 143 is a lead 142 which is not necessary to perform its own function, and refers to a lead which is not used for the connection between the semiconductor chip 141 and the printed circuit board 100 and exists only in a form.

The flash memory 140 according to the present invention is formed by cutting both sides of the NAND flash memory 145 packaged in the form of a 48-pin TSOP 1 along the cutting line 144 shown in FIG.

Since one end of the vertical side of the NAND flash memory 145 packaged in a rectangular shape is located with a pin for applying a control signal, one side of the flash memory 145 has a length L3 at which the first pin is located from one side of the horizontal side. Cut along the spaced cutting lines 144. In addition, since a plurality of NC pins 143 are located at the other end of the vertical side of the flash memory 145, the other side cuts the cutting line 144 spaced apart from the other horizontal side by a length including two NC pins 143. By cutting along, the width of the flash memory 145 can be reduced by a length of up to 1.30 mm.

By cutting both sides of the flash memory 145 along the cutting line 144 described above, the length C2 of the width of the cut flash memory 140 is the length B of the width of the USB connector portion region 125. It will have a shorter length. Therefore, the cut flash memory 140 may be attached to the rear surface of the printed circuit board 100 including the USB connector portion region 125.

In addition, since the standardized flash memory 145 before cutting is formed by packaging the semiconductor chip 141 having a plurality of leads 142 attached to both sides with an encapsulant, the semiconductor chip 141 is a packaged flash memory 145. Located in the center of the outer portion of the flash memory is composed only of the encapsulant. Therefore, even if both sides of the standardized flash memory 145 before cutting are cut along the cutting line 144, the semiconductor chip 141 is not damaged, and thus the function of the flash memory 140 after cutting is not affected. .

The flash memory 140 of the present invention cuts both sides of the standardized flash memory 145 before cutting, so that the width B narrower by 0.50 mm to 1.00 mm longer than the width A of the standardized USB plug 120. It is attached to the back side of the printed circuit board 100 including the USB connector portion region 125 having a. In addition, the thickness of the flash memory 140, 145 packaged in the form of a 48-pin TSOP is standardized to have a length of 1.20 mm, and when attached to the rear surface of the printed circuit board 100, it has a height of 2 mm to 3 mm in length. It becomes possible to comprise in an insulating member. In addition, it has the same specifications as a flash memory packaged in the form of a 48-pin TSOP 1 and can be equally applied to a flash memory packaged in a 48-pin USOP 1 form having a thinner thickness.

Therefore, the flash memory 140 having both sides cut along the cutting line 144 is attached to the rear surface of the printed circuit board 100 including the USB connector portion region 125 of the present invention. ), The size of the printed circuit board 100 can be reduced.

In addition, since the packaged flash memory 140 has a certain strength, a slim USB is attached by attaching the flash memory 140 having both sides cut to the rear surface of the printed circuit board 100 including the USB connector portion region 125. In the case of forming a plug (not shown), the slim USB plug can maintain a certain strength.

6A and 6B are plan views showing a form before and after cutting both sides of a flash memory packaged in a 52-pin TLGA form attached to a printed circuit board of a portable USB storage device according to the present invention.

6A and 6B, the flash memory 145, which is standardized and packaged in a 52-pin TLGA form according to the present invention, has a length of 16.90 mm to 17.10 mm in a horizontal side, and a length of 11.90 mm to 12.10 mm in a vertical side. In the rectangular form having (C1), it is standardized by the semiconductor standard specification.

In the flash memory 145 packaged in a 52-pin TLGA form, 52 leads 142 are formed on a lower surface of the flash memory 145 attached to the printed circuit board 100. A number of NC pins 143 are configured to be located. The N.C pins 143 are spaced apart by a length of 0.50 mm from the horizontal side of the flash memory 145 and are formed to have a diameter of 0.95 mm to 1.05 mm.

The flash memory 145 packaged in the form of a 52-pin TLGA according to the present invention is used by cutting along a cutting line 144 parallel to the horizontal side and spaced by a length of 0.50 mm from each end of the vertical side. Since a plurality of leads 142 are formed at a lower portion of the flash memory 145 packaged in a 52-pin TLGA form, separated by a length of 0.50 mm from the horizontal side, the flash memory 145 is cut along the cutting line 144. ) Does not affect the lead 142 formed on the back side.

In addition, the flash memory 145 packaged in the 52-pin TLGA form is the same as the flash memory packaged in the 48-pin TSOP form. Even cutting both sides of the flash memory 145 along the cut line 144 does not damage the semiconductor chip, so that the function of the flash memory 140 after cutting is not affected.

The flash memory 140 of the present invention cuts both sides of the standardized flash memory 145 before cutting, so that the width B narrower by 0.50 mm to 1.00 mm longer than the width A of the standardized USB plug 120. It is attached to the back side of the printed circuit board 100 including the USB connector portion region 125 having a. In addition, the thickness of the flash memory 140, 145 packaged in the form of a 52-pin TLGA is standardized to have a length of 1 mm, and has a height of 2 mm to 3 mm when attached to the rear surface of the printed circuit board 100. It becomes possible to comprise in an insulating member. In addition, it has the same specifications as a flash memory packaged in a 52-pin TLGA form, and the same applies to a flash memory packaged in a 52-pin ULGA form, which is thinner.

Therefore, the flash memory 140 having both sides cut along the cutting line 144 is attached to the rear surface of the printed circuit board 100 including the USB connector portion region 125 of the present invention. ), The size of the printed circuit board 100 can be reduced.

Although specific embodiments of the present invention have been described and illustrated above, it will be apparent that various modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. Such modified embodiments should not be understood individually from the spirit and scope of the invention, but should fall within the claims appended to the invention.

1 is an exploded perspective view showing the components of a conventional portable USB storage device.

2 (a) and 2 (b) are plan views illustrating positions of components of a portable USB storage device attached to front and rear surfaces of a printed circuit board provided in a conventional portable USB storage device.

3 is an exploded perspective view showing the components of a portable USB storage device according to the present invention.

4 (a) and 4 (b) are plan views illustrating positions of components of a portable USB storage device attached to front and rear surfaces of a printed circuit board provided in the portable USB storage device according to the present invention.

5 (a) and 5 (b) are plan views showing a form before and after cutting both sides of a flash memory packaged in a 48-pin TSOP form attached to a printed circuit board of a portable USB storage device according to the present invention.

6 (a) and 6 (b) are plan views showing a form before and after cutting both sides of a flash memory packaged in a 52-pin TLGA form attached to a printed circuit board of a portable USB storage device according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: printed circuit board 15: contact terminal

20: USB plug 21: external guide

22: insulation member 25: USB connector portion area

30: USB controller 40: flash memory

100: printed circuit board 105: contact terminal

120: USB plug 125: USB connector area

130: USB controller 140: flash memory

141: semiconductor chip 142: lead

143: N.C pin 144: cutting line

145: flash memory before cutting

Claims (3)

A portable USB flash drive for storing data using a flash memory, the portable USB storage device comprising: A printed circuit board 100 serving as an internal substrate of the portable USB storage device; A USB plug 120 including a contact terminal 105 connected to a computer or the like; A flash memory 140 connected to the computer or the like through the USB plug 120 to store external data; A USB controller 130 for controlling the writing, reading and deleting of data between the flash memory 140 and a computer; And A portable USB storage device comprising a case 150 for protecting a printed circuit board 100 to which the flash memory 140 and the USB controller 130 are attached. The USB plug 120 is installed in the USB connector portion region 125 of the printed circuit board 100, The USB controller 130 is attached to the front surface of the printed circuit board 100 except the area of the USB connector portion 125, The flash memory 140 is cut at both sides to match the length B of the width of the USB connector portion region 125 of the printed circuit board 100, and includes a USB connector portion region 125. Portable USB storage device, characterized in that attached to the back. The method of claim 1, The flash memory 140 uses a NAND flash memory packaged in a 48-pin TSOP 1 form or a 48-pin USOP 1 form. The flash memory 140 is spaced apart from each other by a length L3 at which the first pin is located, and a cut line 144 at both sides spaced apart by a length including two NC pins 143 from the other side. ) Is cut along both sides to match the length B of the width of the flash memory 140 with both sides cut to the length B of the width of the USB connector portion region 125 of the printed circuit board 100. Portable USB storage device, characterized in that. The method of claim 1, The flash memory 140 uses a NAND flash memory packaged in a 52 pin TLGA form or a 52 pin ULGA form, The flash memory 140 cuts both sides along a cutting line 144 spaced apart from the horizontal side by the length at which the NC pin is located, and thus, the length of the width of the USB connector portion region 125 of the printed circuit board 100. The portable USB storage device characterized by matching the length C2 of the width | variety of the flash memory 140 by which both sides were cut | disconnected to (B).

Images