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EP-4738997-A1 - INTEGRATED LED PACKAGE DEVICE

EP4738997A1EP 4738997 A1EP4738997 A1EP 4738997A1EP-4738997-A1

Abstract

An integrated LED package device is disclosed. According to one embodiment of the present disclosure, the integrated LED package device includes a power supply unit that supplies power supplied from an external power source, a communication unit that transmits LED bin information to an external controller and receives an LED drive signal from the external controller, a driver that includes a storage unit that stores the bin information and a control unit that controls voltage or current applied to an LED according to a control signal received from the external controller, and an LED that receives the controlled voltage or current from the control unit and emits light under preset conditions.

Inventors

  • KIM, EUN-SUNG
  • LEE, JAE CHUL
  • LEE, CHANG GIL

Assignees

  • Nbias

Dates

Publication Date
20260506
Application Date
20251029

Claims (6)

  1. An integrated LED package device comprising: a power supply unit that supplies power supplied from an external power source; a communication unit that transmits LED bin information to an external controller and receives an LED drive signal from the external controller; a driver that includes a storage unit that stores the bin information and a control unit that controls voltage or current applied to an LED according to a control signal received from the external controller; and an LED that receives the controlled voltage or current from the control unit and emits light under preset conditions.
  2. The integrated LED package device of claim 1, wherein the communication unit is selectively switched to a Universal Asynchronous Receiver/Transmitter (UART) communication method or a Controller Area Network (CAN) communication method via a CNF PIN.
  3. The integrated LED package device of claim 1, wherein the storage unit stores bin information including at least one of light quantity, voltage, and color information of the LED.
  4. The integrated LED package device of claim 1, wherein the control unit controls the voltage or current applied to the LED according to the bin information.
  5. The integrated LED package device of claim 1, wherein the storage unit stores a unique address assigned by the external controller.
  6. The integrated LED package device of claim 1, wherein the communication unit transmits the LED bin information stored in the storage unit to the external controller and receives a control signal from the external controller to drive the LED under preset conditions, and the control unit stores a unique address assigned by the external controller that determines the voltage or current applied to the LED according to the control signal.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of and priority to Korean Patent Application No. 10-2024-2024-0155369, filed on 2024-11-05 and Korean Patent Application No. 10-2025-0033523, filed on 2025-03-14, the entire disclosure(s) of which is hereby incorporated herein by reference in its entirety. BACKGROUND Field The present disclosure relates to an integrated LED package device, and more particularly, to an integrated LED package device in which an LED, a driver for controlling the LED, and a memory storing LED bin information are integrated into a single chip. Description of Related Art LEDs are efficient light-emitting elements widely used in electronic devices and are utilized in diverse fields, including lighting, displays, and traffic lights. While the LEDs offer advantages such as low power consumption and long lifespan, the required current and voltage values may vary depending on the characteristics of each LED. Consequently, systems using multiple LEDs require separate current settings that take into account the characteristics of each LED, which presents numerous design and implementation challenges. In particular, when connecting multiple LEDs to the same circuit or trying to control multiple LEDs within the same package, a problem arises in that the appropriate current value should be individually set for each LED because each LED has different unique characteristics (bin information). Here, the "bin information" refers to data that determines the optimal current, voltage, color, brightness, or the like for each LED to emit light. However, conventionally, because the bin information for each LED should be managed separately and current control should be performed based on this, individual control circuits and settings are required for each LED, leading to complex design and extensive wiring. Furthermore, when the bin information for each LED is stored in a separate external memory or control device, communication with the external device or additional wiring is required to appropriately control the current according to the information, which increases the size and complexity of the system and requires additional cost and time to implement optimized control. Therefore, existing LED systems have encountered problems such as managing bin information for each LED and complex circuit configuration for individual control, increased wiring, and decreased system efficiency. Accordingly, the need for a new LED package device configured in a single chip form in which a memory in which the bin information of the LED is pre-stored and the control circuit are integrated has arisen. SUMMARY The present disclosure has been devised to solve the above-described problem, and an object of the present disclosure is to provide a single-chip type LED package device in which a memory in which bin information is pre-stored and a control circuit are integrated. In addition, another object of the present disclosure is to provide an integrated LED package device that can simply configure an LED system without additional circuit design or complex wiring work. Objects of the present disclosure are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the description below. In order to achieve the above-described objects, according to one embodiment of the present disclosure, there is provided an integrated LED package device including: a power supply unit that supplies power supplied from an external power source; a communication unit that transmits LED bin information to an external controller and receives an LED drive signal from the external controller; a driver that includes a storage unit that stores the bin information and a control unit that controls voltage or current applied to an LED according to a control signal received from the external controller; and an LED that receives the controlled voltage or current from the control unit and emits light under preset conditions. According to one embodiment of the present disclosure, the communication unit may be selectively switched to a Universal Asynchronous Receiver/Transmitter (UART) communication method or a Controller Area Network (CAN) communication method via a CNF PIN. According to one embodiment of the present disclosure, the storage unit may store bin information including at least one of light quantity, voltage, and color information of the LED. According to one embodiment of the present disclosure, the control unit may control the voltage or current applied to the LED according to the bin information. According to one embodiment of the present disclosure, the storage unit may store a unique address assigned by the external controller. According to one embodiment of the present disclosure, the communication unit may transmit the LED bin information stored in the storage unit to the external controller and receive a control signal from the extern