Two-way transmission and breakpoint continuous transmission LED device and display system

Abstract

The utility model relates to a two-way transmission and breakpoint continuous transmission LED device and a display system. The LED device comprises an RGB LED chip group and a two-way driving IC chip, wherein the RGB LED chip group and the two-way driving IC chip are packaged on the front surface of a substrate and are electrically connected; a VDD connecting end connected with a VDD pin of the bidirectional driving IC chip and a GND connecting end connected with a GND pin of the bidirectional driving IC chip are diagonally arranged on the back surface of the substrate; the bidirectional driving IC chip is provided with two first bidirectional ports and two second bidirectional ports opposite to the first bidirectional ports in function, and the back face of the substrate is further provided with two first connecting ends correspondingly connected with the two first bidirectional ports and two second connecting ends correspondingly connected with the two second bidirectional ports. Meanwhile, the utility model discloses a display system formed by the LED device. The circuit supports bidirectional current transmission, has a breakpoint continuous transmission function, and enlarges the application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display field especially one -way transmission and can break point of LED device and display system of continuation. BACKGROUND

[0002] At present, the traditional LED device usually adopts one -way current drive, cannot realize the two -way transmission of current. Besides, the LED drive chip in the prior art is provided with one data input port DI and one data output port DO. The LED drive chip is connected in series through DI / DO port, that is, the data output port DO of the former chip is connected with the data input port DI of the latter chip, but such structure, after the bad point of one LED device appears, the LED device in series with it cannot work, and thus makes the display of the whole display system have a problem, that is, the existing LED device cannot realize break point continuation. SUMMARY

[0003] In view of the existing deficiencies, the utility model provides a kind of LED device and display system of two -way transmission and can break point continuation.

[0004] The technical scheme that the utility model solves its technical problem is as follows: a kind of LED device of two -way transmission and can break point continuation, including the RGB LED chip group and the break point continuation of two -way drive IC chip of electrically connected that are encapsulated on the front of substrate, diagonal line is provided with VDD connecting end with the VDD pin of two -way drive IC chip is connected and GND connecting end with the GND pin of two -way drive IC chip is connected on the back of substrate;Two first two -way ports and two second two -way ports opposite in function with first two -way port are provided on two -way drive IC chip, two first connecting ends corresponding with two first two -way ports are connected and two second connecting ends corresponding with two second two -way ports are connected are also provided on the back of substrate.

[0005] As preferred, the two -way drive IC chip is provided with port logic control unit and switching unit controlled by voltage detection unit.

[0006] As preferred, the RGB LED chip group includes red LED chip, green LED chip and blue LED chip, and the red LED chip, green LED chip and blue LED chip are connected in parallel on two -way drive IC chip.

[0007] As preferred, two first connecting ends and VDD connecting end are arranged on the same side of the back of substrate, and two second connecting ends and GND connecting end are arranged on the same side of the back of substrate.

[0008] Preferably, the two first connection terminals on one LED device can form a serial communication link with the two second connection terminals on another LED device.

[0009] Preferably, the bidirectional driver IC chip is provided with a memory for storing the address information of the bidirectional driver IC chip.

[0010] An LED display system includes a plurality of LED devices as described in any of the preceding claims, wherein the GND connection terminals of the plurality of LED devices are all connected in parallel to a GND connection line, and the VDD connection terminals of the plurality of LED devices are all connected in parallel to a VDD connection line, and the two first connection terminals of the latter LED device and the second connection terminal of the former LED device form a serial communication link between two adjacent LED devices.

[0011] Preferably, the system also includes a controller for operating multiple LED devices, the controller forming a serial communication link with the multiple LED devices.

[0012] Preferably, the system also includes an energy storage module electrically connected to the controller. The controller is equipped with a power status detection unit for detecting the status of the external power supply and a switching switch for switching the external power supply to the energy storage module.

[0013] Preferably, the controller also includes a communication module.

[0014] The beneficial effects of this utility model are as follows: by setting two pairs of bidirectional ports on the bidirectional driver IC chip, this utility model realizes the function of LED device continuing transmission through the other pair of bidirectional ports when one pair of bidirectional ports is interrupted, and the control of the bidirectional ports by the bidirectional driver IC chip meets the requirement of bidirectional current transmission, thus expanding the scope of application. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the LED display system according to an embodiment of the present invention;

[0016] Component names and serial numbers in the diagram: 1-Baseboard 10-VDD connector 11-GND connector 12-First connector 13-Second connector 2-RGB LED chipset 3-Bidirectional driver IC chip 4-GND connector 5-VDD connector 6-Controller 60-Power status detection unit 61-Switch 62-Communication module 7-Energy storage module. Detailed Implementation

[0017] To more clearly illustrate the purpose, technical solution, and advantages of the embodiments of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. A clear and complete description will be provided. Obviously, the described embodiments are some, but not all, embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0018] Examples of embodiments of this utility model Figure 1As shown, a bidirectional LED device capable of resuming interrupted transmission includes an RGB LED chip group 2 electrically connected on the front side of a substrate 1 and a bidirectional driving IC chip 3 capable of resuming interrupted transmission. The substrate 1 is a glass substrate. The RGB LED chip group 2 includes red LED chips, green LED chips, and blue LED chips. The red, green, and blue LED chips are connected in parallel to the bidirectional driving IC chip 3. The bidirectional driving IC chip 3 can be any existing bidirectional driving chip. This bidirectional driving chip is also capable of resuming interrupted transmission. The bidirectional driving IC chip 3 is connected to the RGB LED chip group 2 via wires. The LED chipset 2 is electrically connected, and then disposed on the substrate 1 after die bonding, baking, and wire bonding. Finally, encapsulation glue is used to encapsulate them on the substrate 1 to form a whole. On the back side of the substrate 1, there are VDD connection terminals 10 connected to the VDD pin of the bidirectional driver IC chip 3 and GND connection terminals 11 connected to the GND pin of the bidirectional driver IC chip 3, arranged diagonally. That is, VDD connection terminals 10 and GND connection terminals 11 are located at opposite ends of the diagonal on the back side of the substrate 1, facilitating the connection of the LED device to the power supply wires when forming a display screen. The bidirectional driver IC chip 3 has two first bidirectional ports (not shown in the figure) and two second bidirectional ports (not shown in the figure) with opposite functions to the first bidirectional ports. That is, when the two first bidirectional ports are used as input ports, the two second bidirectional ports are used as output ports. Similarly, in... When the two first bidirectional ports are used as output ports, the two second bidirectional ports are used as input ports. The bidirectional driver IC chip 3 adjusts their function as input or output ports to adapt to different current flow requirements. One first bidirectional port corresponds to one second bidirectional port to form an input / output port pair, and another first bidirectional port corresponds to another second bidirectional port to form another input / output port pair. Either pair can then be used as a spare port. The back of the substrate 1 also has two first connection terminals 12 corresponding to the two first bidirectional ports and two second connection terminals 13 corresponding to the two second bidirectional ports. The two first connection terminals 12 are connected one-to-one with the two first bidirectional ports, and the two second connection terminals 13 are connected one-to-one with the two second bidirectional ports. In use, if one first bidirectional port or one second bidirectional port experiences a break, the transmission can be resumed through the other first bidirectional port or the other second bidirectional port. At this time, the two first connection terminals 12 and the VDD connection terminal 10 are located on the same side of the back of the substrate 1, and the two second connection terminals 13 and the GND connection terminal 11 are located on the same side of the back of the substrate 1. This facilitates the layout and connection between multiple devices and the connection with the power supply wires when using this device to manufacture a display screen.Correspondingly, the two first connection terminals 12 on one LED device can form a serial communication link with the two second connection terminals 13 on another LED device. The serial communication link means that the two first connection terminals 12 on each LED device are connected one-to-one with the two second connection terminals 13 on the adjacent preceding LED device. The first LED device in the serial communication link is connected to the controller 6.

[0019] A further improvement is made to the bidirectional driver IC chip 3, which includes a port logic control unit and a switching unit controlled by a voltage detection unit. Specifically, a first port logic control unit is connected to the first bidirectional port, and a second port logic control unit is connected to the second bidirectional port. The port logic control units transmit command data through their respective ports. The switching unit is located between the first bidirectional port and the first port logic control unit, or between the second bidirectional port and the second port logic control unit. The switching unit is controlled by the voltage detection unit, which is simultaneously connected to its corresponding first or second bidirectional port. When the voltage value of the bidirectional port being used exceeds a preset threshold, the voltage detection unit controls the switching unit to disconnect the port logic control unit from the port. Conversely, the connection between the port logic control unit and the port is maintained.

[0020] Further improvements include a memory within the bidirectional drive IC chip 3 for storing the address information of the bidirectional drive IC chip. This allows the controller to assign corresponding address information to each LED device and then store the address information in the memory. In the manufactured display screen, each LED device has a unique address, enabling the controller to control each LED device individually, and preventing the display of other LED devices from being affected by the damage of one LED device.

[0021] An LED display system, such as Figure 1 As shown, the system includes multiple LED devices as described in any of the preceding claims. The GND connection terminals 11 of these LED devices are all connected in parallel to a single GND connection line 4, and the VDD connection terminals 10 of these LED devices are all connected in parallel to a single VDD connection line 5. A serial communication link is formed between the two first connection terminals 12 of the subsequent LED device and the second connection terminal 13 of the preceding LED device. In other words, multiple LED devices are sequentially connected in a row or column between the GND connection line 4 and the VDD connection line 5. The LED display system also includes a controller 6 for controlling the multiple LED devices. The controller 6 forms a serial communication link with the multiple LED devices and is located at the beginning or end of the LED device.

[0022] Further improvements, such as Figure 1 As shown, it also includes an energy storage module 7 electrically connected to the controller 6. The energy storage module 7 uses a backup battery to power the LED display system when the external power supply fails. The controller 6 is equipped with a power status detection unit 60 for detecting the external power supply status and a switching switch 61 for switching the external power supply to the energy storage module 7. The power status detection unit 60 is implemented using a voltage comparator or microcontroller to monitor the voltage status of the external power supply in real time. The switching switch 61 is implemented using a relay or solid-state switch to quickly switch to the energy storage module 7 when the power status detection unit 60 detects a problem with the external power supply.

[0023] Further improvements, such as Figure 1 As shown, the controller 6 is also equipped with a communication module 62, such as a wireless communication module like Bluetooth, Wi-Fi or ZigBee, to communicate with external devices, thereby realizing remote control and status monitoring.

[0024] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An LED device capable of bidirectional transmission and interruptible resume transmission, characterized in that, The device includes an RGB LED chip assembly electrically connected to the front side of a substrate and a bidirectional driver IC chip capable of resuming interrupted transmission. The back side of the substrate has a VDD connection terminal connected to the VDD pin of the bidirectional driver IC chip and a GND connection terminal connected to the GND pin of the bidirectional driver IC chip, arranged diagonally. The bidirectional driver IC chip has two first bidirectional ports and two second bidirectional ports with functions opposite to the first bidirectional ports. The back side of the substrate also has two first connection terminals corresponding to the two first bidirectional ports and two second connection terminals corresponding to the two second bidirectional ports.

2. The LED device with bidirectional transmission and breakpoint resumption capability according to claim 1, characterized in that, The bidirectional driver IC chip is equipped with a port logic control unit and a switching unit controlled by a voltage detection unit.

3. The LED device with bidirectional transmission and breakpoint resumption capability according to claim 1, characterized in that, The RGB LED chipset includes red LED chips, green LED chips, and blue LED chips, which are connected in parallel on a bidirectional driver IC chip.

4. The LED device with bidirectional transmission and breakpoint resumption capability according to claim 1, characterized in that, The two first connection terminals and the VDD connection terminal are disposed on the same side of the back of the substrate, and the two second connection terminals and the GND connection terminal are disposed on the same side of the back of the substrate.

5. The LED device with bidirectional transmission and breakpoint resumption capability according to claim 1, characterized in that, Two first connection terminals on one LED device can form a serial communication link with two second connection terminals on another LED device.

6. The LED device with bidirectional transmission and breakpoint resumption capability according to claim 1, characterized in that, The bidirectional driver IC chip has a memory for storing the address information of the bidirectional driver IC chip.

7. An LED display system, characterized in that, The device includes multiple LED devices as described in any one of claims 1 to 6, wherein the GND connection terminals of the multiple LED devices are connected in parallel to a GND connection line, the VDD connection terminals of the multiple LED devices are connected in parallel to a VDD connection line, and the two first connection terminals of the latter LED device and the second connection terminal of the former LED device form a serial communication link between two adjacent LED devices.

8. The LED display system according to claim 7, characterized in that, It also includes a controller for operating multiple LED devices, the controller forming a serial communication link with the multiple LED devices.

9. The LED display system according to claim 8, characterized in that, It also includes an energy storage module electrically connected to the controller, wherein the controller is provided with a power status detection unit for detecting the status of the external power supply and a switching switch for switching the external power supply to the energy storage module.

10. The LED display system according to claim 8, characterized in that, The controller also includes a communication module.

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