CN-122021689-A - Full-surface luminous intelligent card for wireless energy collection

Abstract

The invention discloses a full-surface luminous smart card for wireless energy collection, which belongs to the technical field of smart cards and comprises an IC module for realizing data interaction, an LED module, an INLAY structure layer and a light-emitting diode (LED) module, wherein the LED module comprises an LED Flexible Printed Circuit (FPC) board, a plurality of LED light sources, a rectifying element and an energy storage element, and the INLAY structure layer comprises an FPC board fixing layer, a light guide layer, an upper compensation layer and a lower compensation layer. The invention realizes large-area uniform light emission on the front side, synchronous light emission on the side, uniform brightness, strong visual impact, improved visual effect, independent work of IC communication and LED light emission function, no electromagnetic interference, prolonged communication distance, good function compatibility, strict compatibility with ISO/IEC 7810 standard size, direct application to the existing card reading equipment, standardized size, compatibility with the existing card manufacturing equipment in manufacturing process, improved yield, suitability for large-scale mass production, high production efficiency, no need of built-in battery, energy acquisition by the electromagnetic field of the card reader, long service life, environmental protection, energy conservation and environmental protection.

Inventors

• JIAO XIAODONG
• WU SHUAISHUAI
• JING ZHENGJUN
• YUAN YEFENG

Assignees

• 上海一芯智能科技有限公司

Dates

Publication Date

20260512

Application Date

20260120

Claims (9)

1. 1. A wireless energy harvesting full surface luminescent smart card, comprising: The IC module is used for realizing data interaction; the LED module comprises an LED FPC board (4), a plurality of LED light sources (5), a rectifying element and an energy storage element; The INLAY structure layer comprises an FPC board fixing layer, a light guide layer, an upper compensation layer and a lower compensation layer; The external packaging structure comprises an upper printing layer, a lower printing layer and a tape adhesive film; the LED module acquires energy from an electromagnetic field of the card reader through the LED antenna (3) and drives the plurality of LED light sources (5) to work after rectification, the light guide layer is made of transparent light guide materials and is provided with a light reflection point array, and light rays emitted by the side faces of the LEDs are guided to the front face or the edge of the card, so that surface light emission of at least 85% of area and side light emission of the peripheral edge are realized.
2. 2. The full-surface luminous smart card for wireless energy collection according to claim 1, wherein the IC module comprises an IC chip (1) and an IC antenna (2), the IC antenna (2) is of a coil structure wound on a fixed layer of an FPC board, the working frequency range is 13.56MHz + -0.7 MHz, and the standard protocol ISO/IEC 14443 is supported.
3. 3. The full-surface luminous smart card for wireless energy collection according to claim 1, wherein the thickness of an LED FPC board in the LED module is 0.06mm, the height of an LED is not more than 0.42mm, the heights of a diode (6) and a capacitor (7) are controlled below 0.42mm, and the whole INLAY thickness is ensured to be compatible with the standard smart card size.
4. 4. The wireless energy collection full-surface light-emitting smart card is characterized in that the LED module forms a closed loop circuit and comprises an LED antenna (3), a rectifier diode (6) and at least one LED which are connected in series, the LEDs are connected in parallel to ensure brightness consistency, and the energy storage element is a capacitor (7) connected in parallel to two ends of the LED antenna (3) and used for adjusting resonant frequency and stabilizing voltage output.
5. 5. The full-surface luminous smart card for wireless energy collection according to claim 1, wherein the working frequency band of the LED module is 19 MHz-30 MHz, and the full-surface luminous smart card is isolated from the working frequency band of the IC module, so that electromagnetic interference generated during simultaneous induction of the LED module and the IC module is avoided.
6. 6. The wireless energy collection full-surface luminous smart card according to claim 1, wherein the light guide layer is made of transparent PC or acrylic material, the thickness is 0.17-0.25 mm, micro-structure reflecting points with adjustable density are distributed on the surface, optical optimization design is carried out according to the LED layout, and the uniform distribution of the brightness of the light-equalizing area is achieved.
7. 7. The wireless energy harvesting full-surface light-emitting smart card of claim 6, wherein the light guide layer is provided with component clearance holes, including LED clearance holes, capacitor (7) clearance holes and diode (6) clearance holes, for accommodating corresponding electronic components and preventing damage during lamination.
8. 8. The full-surface luminous smart card for wireless energy collection according to claim 1, wherein in the INLAY structure, the FPC board fixing layer adopts white PVC, PC or PETG material as a base material, the IC antenna (2) or the LED antenna (3) is wound on the surface of the FPC board by an ultrasonic welding mode, and the chip or the LED FPC board is electrically connected by hot-press welding or laser welding.
9. 9. The wireless energy collection full-surface luminous smart card is characterized in that the upper printing layer is made of light-transmitting materials, a local silk-screen black pattern is used for shading light, a non-shading area forms a luminous window, the front surface of the lower printing layer is full-screen printed with black ink to shield back light leakage, and the back surface is printed with white ground color and other colorful graphics.

Description

Full-surface luminous intelligent card for wireless energy collection Technical Field The invention belongs to the technical field of smart cards, and particularly relates to a full-surface luminous smart card for wireless energy collection. Background With the development of the internet of things and mobile payment, the traditional magnetic stripe card has been gradually replaced by a smart card, and the IC card (also called RFID card and NFC card) widely applied at present usually conforms to the standard of ISO/IEC 7816 or ISO/IEC 14443, and realizes non-contact data exchange with an antenna through a built-in chip. In the prior art, part of smart cards adopt LED lamps as status indicators, for example, flash prompts when the card swiping is successful, however, the products adopt a 'point light source' design, only a small lamp can be locally lightened on the card, the visual expressive force is limited, and the high-end customization requirement is difficult to meet. In addition, the IC circuit and the LED circuit share the antenna system with the same frequency, so that signal interference is easy to be caused, and the communication reliability is affected. More importantly, the existing light-emitting card has the common problems of small light-emitting area (generally lower than 40 percent), incapability of covering the whole visible surface, low optical efficiency, unclear long-distance viewing, complex structure, poor interlayer matching to cause card bending and delamination, lack of an effective electromagnetic isolation mechanism, mutual interference between an IC and an LED module, uncontrollable manufacturing process and low yield. Disclosure of Invention The invention aims to provide a full-surface luminous smart card for wireless energy collection, which realizes front large-area uniform light emission, side synchronous light emission, uniform brightness, strong visual impact, improved visual effect, independent work of IC communication and LED light emission functions, no electromagnetic interference, prolonged communication distance, good functional compatibility, strict compatibility with ISO/IEC standard size, direct application to the existing card reading equipment, size standardization, compatibility of the manufacturing process with the existing card manufacturing equipment, improved yield, suitability for large-scale mass production, high production efficiency, no need of built-in batteries, energy acquisition through the electromagnetic field of a card reader, long service life, environmental protection, energy conservation and environmental protection, and the purpose of solving the technical problems. The technical scheme for solving the technical problems is as follows, the full-surface luminous smart card for wireless energy collection comprises: The IC module is used for realizing data interaction; the LED module comprises an LED FPC board, a plurality of LED light sources, a rectifying element and an energy storage element; The INLAY structure layer comprises an FPC board fixing layer, a light guide layer, an upper compensation layer and a lower compensation layer; The external packaging structure comprises an upper printing layer, a lower printing layer and a tape adhesive film; The LED module acquires energy from an electromagnetic field of the card reader through the LED antenna and drives the plurality of LED light sources to work after rectification, the light guide layer is made of transparent light guide materials and is provided with a light reflection point array, and light rays emitted by the side face of the LED are guided to the front face or the edge of the card, so that surface light emission of at least 85% of area and side light emission of the peripheral edge are realized. Preferably, the IC module comprises an IC chip and an IC antenna, wherein the IC antenna is of a coil structure wound on the FPC board fixing layer, the working frequency range is 13.56MHz + -0.7 MHz, and the ISO/IEC 14443 standard protocol is supported. Preferably, the thickness of the LED FPC board in the LED module is 0.06mm, the height of the LED is not more than 0.42mm, the heights of the diode and the capacitor are controlled below 0.42mm, and the integral INLAY thickness is ensured to be compatible with the standard smart card size. Preferably, the LED module forms a closed loop circuit and comprises an LED antenna, a rectifier diode and at least one LED which are connected in series, wherein the LEDs are connected in parallel to ensure brightness consistency, and the energy storage element is a capacitor connected in parallel to two ends of the LED antenna and is used for adjusting resonant frequency and stabilizing voltage output. Preferably, the working frequency band of the LED module is 19 MHz-30 MHz, and is isolated from the working frequency band of the IC module, so that electromagnetic interference generated during simultaneous induction of the working frequency band and t