KR20040084336A - Smart card chip emitting light for displaying brand name/logo/ad script, and manufacturing method thereof - Google Patents

Abstract

PURPOSE: A smart card chip emitting light and a manufacturing method thereof are provided to simplify and save a cost for making a light emitting credit card by combining two chip as one chip, and display AD. CONSTITUTION: A smart card die(6) and an LED(Light Emitting Diode) die(5) are made to a chip shape by being mounted on one module. A variable space controlling an angle or a color of the light emitted to an upper part and a side, and having a light connecting space with an external device is formed in an LED die array.

Description

Light emitting smart card chip and its manufacturing method {omitted}

The present invention relates to a light emitting card chip required for manufacturing a smart card, which is necessary for the production of a smart card, to make a smart card chip and an LED chip emitting light into one chip module.

Smart cards include contact IC cards (ISO 7816), non-contact remote coupling communication cards (ISO 14443), magnetic cards, and the like. The present invention relates to a light emitting chip for expressing an advertisement or a logo trademark of an issuer in all cards used by receiving power from an antenna or other power supply (aka reader) for a credit card, pass card, etc. It is.

Unlike M / S (magnetic strip) cards, smart card chips have their own functions of computing and storing information. Usually, microprocessors (MPUs), card operating systems (COS), and security algorithms (EEPROMs) are built in and operate in 8, 16, or 32-bit systems. These chips are equipped with hardware-based software, which can perform general and general application programs of the general computer and store and compute information on the chip, which can perform various and complex functions of card usage. These features are being provided to new SI developers and applied to various industries, such as credit cards, membership pass security cards and flash cards. These cards should be chipped to make them easy to use for various functions on the card. EEPROM embedded chip is usually made of chip within 0.4mm in the form of COB (Chip On Board), which is thick with PVC, which forms the skeleton of the card, because the thickness of credit card should be embedded within 0.76mm. The specification for is strictly limited.

To date, a few smart card chips have been developed. All of RF type is developed in COB type with two junction terminals and is connected with antenna line to perform electrical function and receive power from reader. In addition, in the case of contact type, it is in the form of several terminals connected directly from the reader, and is exchanged information by receiving power integratedly. There is no light emitting element in such a contact or non-contact credit guard. The present invention requires an LED chip that emits light in order to display a trademark logo or advertisement on a credit card, and a process of integrating the LED chip with a smart card chip is required. The present invention seeks to simplify and integrate this process.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of a light emitting card IC chip in which a smart card chip and a light emitting LED chip are mounted in one module. In general, a smart card is made of two parts, a chip and an antenna. The chip associated with the antenna is included in the plastic formation in the card and placed in a certain position in the card, which does not require very high precision. However, it is possible to communicate information with the reader regardless of the middle of the space except for the space for punching the card number and the like written on the outside of the card.

If you configure the LED chip emitting light on the smart card with Andena, you can make a credit card emitting light. At this time, smart card chip and two LED chips emitting light are made by inlaying the card. Another process for attaching light emitting lamps, which was not necessary for the production of smart cards, has been increased. At this time, the main purpose of the light emitting lamp is to emit light externally, so that the exact chip position is required to inlay the card accurately in order to match the logo or advertisement text printed on the surface of the card. In the current production process consisting of very difficult situation. The present invention is to manufacture the chip as a module to simplify any of these difficult work processes. Also, if two chips are produced in one chip, it can save considerable cost.

In order to combine the smart card chip and the LED chip, in the configuration of the COB constituting the chip module, a terminal for connecting two conventional chip terminals and an LED chip is additionally installed. In addition, the epoxy mold portion of the ordinary black that protects the chip wafer (Die) and the tax wires connected to the terminal should be replaced with a transparent one. At this time, depending on the condition of the light source required on the card surface, the part may be made black and partly transparent.

Two chips with different functions should be mounted at a reasonable distance so that they do not interfere with each other because they are embedded in one module. When shielding of radio waves is required, there may be a portion forming a shielding film. According to the type of LED chip, it is necessary to configure the direction of the light emitting part well, and to configure the chip that emerges upward and the chip that shines on the side.

Figure 1. Light-emitting card chip structure consisting of one module with smart card chip and LED chip

Figure 2. Smart Card Chip

Figure 3.LED Chip (Top View Type)

Figure 4.LED Chip (Side View Type)

Figure 5. Configuration of light emitting card chip with smart card chip and SIde view type LED chip

Figure 6. Configuration of LED chip according to ISO standard and emission angle of light emitting card (credit card)

Figure 7. Schematic diagram of two chips arranged in a module in series

8. Configuration diagram of light emitting card chip module

Figure 9. Configuration of LED Card Module 2

-Explanation of symbols for the main parts of the drawings-

1.COB 2. Die Attach Paste

3. Smart card chip tax line 4a. Chip Mold (Protective Epoxy Resin)

4b. LED Reflector 5a.b.c. LED Chip

6. Smart Die 7. LED Chip Tax Line

8.Side View LED irradiation hole 9.10. Top Type irradiation angle

11. Side view type irradiation angle 12. Expression area of trademarks

13. Diffuse Film 14. Antenna

15. Border of mold 16. Border of reduced module

The IC chip has an antenna connected to a general smart card, and there are usually two terminals connecting the antenna. In addition to these two terminals, an antenna must be provided to the LED chip that emits light. Usually, two terminals may be connected in parallel. The present invention is to reduce the tax line 7 by one step by configuring the LED die (5a) using the smart card chip 6 and the common terminal in the three-terminal method illustrated in Figure 8 in the configuration of the COB. As the work progresses, two of the smart chip 6 and the LED chip 5a may be placed separately. In addition to this purpose, it is convenient to make several terminals that can be connected to external devices in advance according to the purpose of other connected devices. In most cases, it refers to a terminal integrated to connect a speaker or the like.

In the example of Figure 1 LED Die (5a) should be equipped with a variable of installation so that it can be represented in the Top View method (Fig. 3) and Side View method (Fig. 4). At this time, the size of the chip module can be the same as the current chip in the case of the top view (Fig. 3) method, but the side view (Fig. 4) method has a large area on the upper surface (between (9) and (11) in Fig. 6). It is to be arranged sideways to illuminate and to be widened to the upper side by using light reflecting surface. At this time, the module of the light emitting card chip is slightly larger. In order to reflect the upper part, the height of the chip should be within 0.4mm when manufactured in the side view (Fig. 5). The configuration of the light from the side view method (5b of FIG. 5) to the full side of FIG. 5 (8) is also required. At this time, the large space 8 is not necessary. This is to enable the light to be emitted to the third place by using a plastic or other material that emits light on the side to express another. The chip can be made smaller by reducing the epoxy mold edge 15 of FIG. 5 to the dotted line 16. This is mainly intended for the expression of advertisements using optical fibers or glass plates. This is to be adapted to the elements of the post-process of card manufacturing.

The most important element of the present invention is to construct a chip to emit light. The light emitting card chip that emits light is coated with black epoxy or the like in most cases (Fig. 2) in order to bond the tax wire to the die of the wafer and protect it. This is fatal for the smart card type light emitting chip that emits light. In order to solve these factors, in the present invention, the filler of 4a of FIG. 1 should be made transparent so that the light from the LED die can be easily transmitted out. In this case, the smart card chip portion (6 in FIG. 1) may be black and the LED chip portion (5a in FIG. 1) may be transparent. In addition, various colors of fillers may be used to obtain light transmission effects. This is also a very important factor in the expression of advertising.

The present invention has a primary purpose of making two chips into a single chip for simplicity and cost reduction in the process of making a credit card that emits light in a circuit configuration in which only a smart card chip and an antenna are connected to a conventional credit card manufacturing. In addition, one chipped light emitting card chip serves as a new advertising medium on a card displaying the issuer's name and the like. It is very important to reduce one process in credit card manufacturing with two physical functions. Therefore, the one combined with the smart card chip and LED chip and the light emitting card chip (Fig. 8, Fig. 9) is a very important and beneficial invention for the development of the credit card culture to develop the new card products.

Claims (2)

In the module manufacturing of the smart card chip, the chip of Fig. 1 having the circuit configuration of Figs. 8 and 9 in which the smart card chip die 6 and the LED chip die 5a of Fig. 1 are mounted in one module and chipped, Its manufacturing method. In the configuration of FIG. 1, a variable space having an angle control, a color change, and a light connection space between an external device and the light emitted from the upper side of the LED Die 5 array illustrated in FIG. 6. The configuration of the chip constituting the configuration shown in FIG.