A backlight panel, a backlight module and a display panel

Abstract

This invention discloses a backlight board, a backlight module, and a display panel. The backlight board includes a circuit board, a driver light-emitting group, and terminals. The driver light-emitting group is disposed on the circuit board. Each driver light-emitting group includes multiple cascaded driver chips and multiple strings of LED light-emitting devices. Each driver chip is connected to at least one string of LED light-emitting devices. Each string of LED light-emitting devices includes at least one LED light-emitting device. Each string of LED light-emitting devices serves as a light-emitting zone and is individually controlled by the corresponding driver chip. The LED light-emitting devices include multiple LED light-emitting chips with different emission colors. The first driver chip in the driver light-emitting group is connected to the terminals. In each string of LED light-emitting devices in the driver light-emitting group, LED light-emitting chips of the same emission color share a common electrode and are connected to the terminals. This invention reduces the number of wires connected to the terminals, thereby reducing the design difficulty and cost of the circuit board.

Description

Technical Field

[0001] This invention relates to display technology, and more particularly to a backlight panel, a backlight module, and a display panel. Background Technology

[0002] LCD panels themselves do not emit light and require a backlight to provide brightness. Traditional LCD panels use a system-wide backlight control. When displaying pure black, the backlight cannot be completely turned off, and due to its structural limitations, the liquid crystal layer cannot completely block the backlight, resulting in a less pure black. Therefore, it is difficult to achieve extreme contrast between extremely bright and extremely dark areas in the same image, leading to generally poor overall contrast performance.

[0003] To address this issue, more and more display panels are adopting local dimming technology. Local dimming technology divides the backlight into multiple areas, with each area having its brightness controlled independently, thereby ensuring more natural contrast between light and dark areas and richer detail in the image.

[0004] With a large number of zones, the backlight boards of existing zone control technologies have a large number of channels, which means that there are many wires on the circuit boards used by the backlight boards. This makes the circuit board wiring more complex and increases the design difficulty and cost of the backlight boards. Summary of the Invention

[0005] This invention provides a backlight board, a backlight module, and a display panel, which can reduce the number of wires connected to the wiring terminals, thereby reducing the design difficulty and cost of the circuit board.

[0006] In a first aspect, the present invention provides a backlight panel, comprising:

[0007] Circuit board;

[0008] Multiple driving light groups are disposed on the circuit board. Each driving light group includes multiple cascaded driving chips and multiple strings of LED light-emitting devices. Each driving chip is connected to at least one string of LED light-emitting devices. Each string of LED light-emitting devices includes at least one LED light-emitting device. Each string of LED light-emitting devices serves as a light-emitting zone and is individually controlled by the corresponding driving chip to emit light. Each LED light-emitting device includes multiple LED light-emitting chips with different emitting colors.

[0009] The terminal block is connected to the first driving chip in the driving light-emitting group. The LED chips of the same color in the last LED in each string of LEDs in the driving light-emitting group share a common electrode and are connected to the terminal block.

[0010] Optionally, the LED light-emitting device includes three LED light-emitting chips of different colors: a red light-emitting chip, a green light-emitting chip, and a blue light-emitting chip.

[0011] Optionally, the driver chip includes a data input pin, a data output pin, a power input pin, a power output pin, a ground pin, and at least one set of light emission control pins;

[0012] In the driving light-emitting group, the data input pin and power input pin of the first driving chip are both connected to the terminal block. The data input pin of the kth driving chip is connected to the data output pin of the (k-1)th driving chip. The power input pin of the kth driving chip is connected to the power output pin of the (k-1)th driving chip. k is a positive integer greater than 1. The ground pins of multiple driving chips in each string are connected. The data output pin of the last driving chip is connected to the terminal block. The power output pin of the last driving chip is left floating.

[0013] A set of light-emitting control pins is connected to a corresponding string of LED light-emitting devices. Each set of light-emitting control pins includes multiple light-emitting control pins corresponding to the LED light-emitting chips in the LED light-emitting devices. The i-th light-emitting control pin is connected to the first electrode of the i-th LED light-emitting chip in the first LED light-emitting device. The second electrode of the i-th LED light-emitting chip in the j-th LED light-emitting device is connected to the first electrode of the i-th LED light-emitting chip in the (j-1)-th LED light-emitting device. The second electrode of the i-th LED light-emitting chip in the last LED light-emitting device is connected to the terminal block. i is a positive integer and j is a positive integer greater than 1.

[0014] Optionally, the number of driving chips in the driving light group is less than or equal to 10.

[0015] Optionally, the LED light-emitting device and the driving chip are disposed separately, and the side of the driving chip away from the circuit board is coated with a reflective material.

[0016] Optionally, the driver chip is integrated into the LED light-emitting device.

[0017] Optionally, the driving chip and the LED light-emitting device in the driving light-emitting group are disposed on the same side of the circuit board.

[0018] Optionally, the intersection of the LED light-emitting chip and the wiring terminal is insulated with a metal jumper.

[0019] Optionally, the formula for calculating the number of channels in the terminal block is:

[0020]

[0021] Wherein, N is the number of channels of the terminal block, n1 is the number of LED chips in a single LED light-emitting device, n2 is the number of ground pins in the driver chip, n3 is the number of data input pins in the driver chip, n4 is the number of data output pins in the driver chip, n5 is the number of power input pins in the driver chip, n6 is the number of partitions, n7 is the number of driver chips in the driver light-emitting group, and n8 is the number of light-emitting control pin groups of a single driver chip.

[0022] Optionally, the circuit board is also provided with a temperature sensor, which is connected to the terminal block.

[0023] In a second aspect, the present invention also provides a backlight module, including a backlight panel as provided in the first aspect of the present invention.

[0024] Thirdly, the present invention also provides a display panel including a backlight module as provided in the second aspect of the present invention.

[0025] The backlight board provided by this invention includes a circuit board, a driver light-emitting group, and a terminal block. The driver light-emitting group is disposed on the circuit board. Each driver light-emitting group includes multiple cascaded driver chips and multiple strings of LED light-emitting devices. Each driver chip is connected to at least one string of LED light-emitting devices. Each string of LED light-emitting devices includes at least one LED light-emitting device. Each string of LED light-emitting devices serves as a light-emitting zone and is individually controlled by the corresponding driver chip. The LED light-emitting devices include multiple LED light-emitting chips of different colors. The first driver chip in the driver light-emitting group is connected to the terminal block. In each string of LED light-emitting devices in the driver light-emitting group, LED light-emitting chips of the same color share a common electrode and are connected to the terminal block. Since only the first driver chip in each driver light-emitting group needs to be connected to the terminal block, power signals and data signals are transmitted to the next level driver chip through cascading, reducing the number of wires connected to the terminal block and reducing the design difficulty and cost of the circuit board. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a circuit diagram of a non-scanning area light control system;

[0028] Figure 2 This is a circuit diagram for scanning area light control;

[0029] Figure 3 A schematic diagram of the structure of a backlight panel provided by the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the driver chip provided by the present invention;

[0031] Figure 5 A schematic diagram of a metal jumper provided by the present invention;

[0032] Figure 6 This is a schematic diagram of another backlight panel provided by the present invention. Detailed Implementation

[0033] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Moreover, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0036] Existing area control systems are divided into two types: scanning and non-scanning. Figure 1 This is a circuit diagram of a non-scanning area light control system. Figure 2 This is a circuit diagram for scanning-type area control, using an LED light-emitting device as an example, such as... Figure 1As shown, the LED light-emitting device 11 includes R, G, and B three-color light-emitting chips. The anodes of all the light-emitting chips are connected together and then connected to the terminal block 12 via a single wire. The cathodes of each light-emitting chip are also connected to the terminal block 12 via a separate wire. Therefore, the formula for calculating the number of channels (the number of wires connected to the terminal block) of the non-scanning area control terminal block 12 is: Number of channels = Number of zones × 3 + 1. Figure 2 As shown, all LED light-emitting devices 21 are divided into multiple scanning areas S. Each scanning area S includes multiple LED light-emitting devices 21, and each LED light-emitting device 21 includes R, G, and B tri-color light-emitting chips. The cathodes of the light-emitting chips of the same color within each scanning area S are electrically connected and connected to the terminal block 22 via a wire. The light-emitting chips of the same color at the same position of the LED light-emitting devices 21 in each scanning area S are connected and connected to the terminal block 22 via a wire. Thus, the formula for calculating the number of channels (the number of wires connected to the terminal block) of the terminal block 22 for scanning area control is: Number of channels = (Number of partitions / Number of scanning areas + Number of scanning areas) × 3. Scanning area control increases the maximum current per channel, so the number of scanning areas cannot be too high, generally below 8. Taking 600 partitions as an example, the number of channels for non-scanning area control is 1801. Taking 600 partitions and 8 scanning areas as an example, the number of channels for scanning area control is 249. It is evident that both non-scanning and scanning area control have a relatively large number of channels, resulting in complex circuit board wiring and increasing the design difficulty and cost of the backlight board.

[0037] To address the above problems, the present invention provides a backlight panel. Figure 3 This is a schematic diagram of the structure of a backlight panel provided by the present invention, as shown below. Figure 3 As shown, the backlight panel includes:

[0038] Circuit board 110, with metal wires installed on it.

[0039] Multiple driver-driven light-emitting groups 120 are disposed on the circuit board 110. Each driver-driven light-emitting group 120 includes multiple cascaded driver chips 121 and multiple strings of LED light-emitting devices. Each driver chip 121 is connected to at least one string of LED light-emitting devices. Each string of LED light-emitting devices includes at least one LED light-emitting device 122. Each string of LED light-emitting devices forms a light-emitting zone A and is individually controlled to emit light by the corresponding driver chip 121. The LED light-emitting device 122 includes multiple LED light-emitting chips with different emission colors. For example, the LED light-emitting chips can be MinLEd or MicroLEd, and this embodiment of the invention is not limited thereto.

[0040] Terminal 130 connects to the first driver chip in the LED light-emitting group 120. LEDs of the same color in the last LED of each string in the LED light-emitting group share a common electrode and are also connected to terminal 130. Terminal 130 receives power and data signals from the control motherboard and transmits them to the driver chip 121. The control motherboard can be the control motherboard of the display panel.

[0041] For example, the power signal from the control motherboard is transmitted sequentially to the next level through the cascaded driver chip 121, providing operating power to the LED light-emitting device 122. The data signal from the control motherboard is transmitted sequentially to the next level through the driver chip 121, controlling the corresponding LED light-emitting device 122 to emit light. For example, the data signal may include a driver chip selection signal and a current adjustment signal. The driver chip selection signal can select the driver chip 121 to be controlled based on its address, thereby controlling the corresponding LED light-emitting device 122 to operate. The current adjustment signal is used to control the operating current of the LED light-emitting device 122 to control its brightness, thus achieving regional light control.

[0042] The backlight board provided by this invention includes a circuit board, a driver light-emitting group, and a terminal block. The driver light-emitting group is disposed on the circuit board. Each driver light-emitting group includes multiple cascaded driver chips and multiple strings of LED light-emitting devices. Each driver chip is connected to at least one string of LED light-emitting devices. Each string of LED light-emitting devices includes at least one LED light-emitting device. Each string of LED light-emitting devices serves as a light-emitting zone and is individually controlled by the corresponding driver chip. The LED light-emitting devices include multiple LED light-emitting chips of different colors. The first driver chip in the driver light-emitting group is connected to the terminal block. In each string of LED light-emitting devices in the driver light-emitting group, LED light-emitting chips of the same color share a common electrode and are connected to the terminal block. Since only the first driver chip in each driver light-emitting group needs to be connected to the terminal block, power signals and data signals are transmitted to the next level driver chip through cascading, reducing the number of wires connected to the terminal block and reducing the design difficulty and cost of the circuit board.

[0043] In some embodiments of the present invention, such as Figure 3As shown, the LED light-emitting device 122 includes three LED light-emitting chips of different colors: a red light-emitting chip R, a green light-emitting chip G, and a blue light-emitting chip B. In other embodiments of the present invention, in order to improve the color gamut of the LED light-emitting device and thus improve the display effect of the display panel, the LED light-emitting device may also include four LED light-emitting chips of different colors: a red light-emitting chip, a green light-emitting chip, a blue light-emitting chip, and a white light-emitting chip. The present invention does not limit this.

[0044] Figure 4 This is a schematic diagram of the structure of the driver chip provided by the present invention, as shown below. Figure 3 , 4 As shown, the driver chip 121 includes a data input pin DI, a data output pin DO, a power input pin VI, a power output pin VO, a ground pin GND, and at least one set of light-emitting control pins. For example, in this embodiment, the driver chip 121 includes two sets of light-emitting control pins. Each set of light-emitting control pins includes three light-emitting control pins. The first set consists of a red light-emitting control pin R_1, a green light-emitting control pin G_1, and a blue light-emitting control pin B_1. The second set consists of a red light-emitting control pin R_2, a green light-emitting control pin G_2, and a blue light-emitting control pin B_2.

[0045] In the driver light-emitting group 120, the data input pin DI and power input pin VI of the first driver chip 121 are connected to the terminal 130 via wires. The data input pin VI of the kth driver chip 121 is connected to the data output pin DO of the (k-1)th driver chip 121, and the power input pin VI of the kth driver chip 121 is connected to the power output pin VO of the (k-1)th driver chip 121, where k is a positive integer greater than 1. The ground pins GND of multiple driver chips 121 in each string are connected and connected to the terminal 130 via a wire. The data output pin DO of the last driver chip 121 is connected to the terminal 130, and the power output pin VO of the last driver chip 121 is left floating.

[0046] A set of light-emitting control pins is connected to a corresponding string of LED light-emitting devices. Each set of light-emitting control pins includes multiple light-emitting control pins corresponding to LED chips in LED light-emitting devices 122. The i-th light-emitting control pin is connected to the first electrode of the i-th LED chip in the first LED light-emitting device 122. The second electrode of the i-th LED chip in the j-th LED light-emitting device 122 is connected to the first electrode of the i-th LED chip in the (j-1)-th LED light-emitting device 122. The second electrode of the i-th LED chip in the last LED light-emitting device 122 is connected to terminal 130. i is a positive integer, and j is a positive integer greater than 1. For example, taking one of the driver chips 121 as an example, the driver chip 121 controls two strings of LED light-emitting devices. The red light-emitting control pin R_1 is connected to the first electrode of the red chip R of the first LED light-emitting device in the first string of LED light-emitting devices. The green light-emitting control pin G_1 is connected to the first electrode of the green chip G of the first LED light-emitting device in the first string of LED light-emitting devices. The blue light-emitting control pin B_1 is connected to the first electrode of the blue chip B of the first LED light-emitting device in the first string of LED light-emitting devices. Similarly, the red light-emitting control pin R_2 is connected to the first electrode of the red light-emitting chip R of the first LED in the second string of LEDs; the green light-emitting control pin G_2 is connected to the first electrode of the green light-emitting chip G of the first LED in the second string of LEDs; and the blue light-emitting control pin B_2 is connected to the first electrode of the blue light-emitting chip B of the first LED in the second string of LEDs. LEDs of the same color in the last LED 122 of each string of LEDs in the driving light-emitting group 120 share a common electrode and are connected to the terminal block 130. For example, in the driving light-emitting group 120, the second electrodes of the red light-emitting chips R are connected together and connected to the terminal block 130 via a wire; the second electrodes of the green light-emitting chips G are connected together and connected to the terminal block 130 via a wire; and the second electrodes of the blue light-emitting chips B are connected together and connected to the terminal block 130 via a wire.

[0047] From the above connection relationships, it can be seen that the formula for calculating the number of channels in terminal 130 (i.e., the number of wires connected to terminal 130) is as follows:

[0048]

[0049] Wherein, N is the number of channels in terminal block 130, n1 is the number of LED chips in a single LED light-emitting device 122, n2 is the number of ground pins GND in driver chip 121, n3 is the number of data input pins DI in driver chip 121, n4 is the number of data output pins DO in driver chip 121, n5 is the number of power input pins VI in driver chip 121, n6 is the number of partitions, n7 is the number of driver chips 121 in driver light-emitting group 120, and n8 is the number of light-emitting control pin groups of a single driver chip.

[0050] In some embodiments of the present invention, due to signal transmission delay and interference issues, the cascaded signals of the driver chip 121 cannot be cascaded indefinitely. Generally, it is more appropriate to cascade no more than 10 driver chips 121. In a specific embodiment of the present invention, 10 driver chips 121 are cascaded in each group of driving light-emitting groups 120.

[0051] For example, taking a required number of partitions of 600 and 10 cascaded driver chips 121 in each group of driver light-emitting groups 120 as an example, in this embodiment, the number of LED light-emitting chips in a single LED light-emitting device 122 is 3, the number of ground pins GND in driver chip 121 is 1, the number of data input pins DI in driver chip 121 is 1, the number of data output pins DO in driver chip 121 is 1, the number of power input pins VI in driver chip 121 is 10, the number of light-emitting control pin groups in a single driver chip is 2. Through the above formula, the number of channels 94 of the terminal block 130 of the present invention is calculated. Under the same number of partitions, the number of wires connected to the terminal block 130 can be significantly reduced, reducing the design difficulty and cost of the circuit board.

[0052] In some embodiments of the present invention, such as Figure 3 As shown, the LED light-emitting device 122 and the driver chip 121 are disposed separately. The driver chip 121 is generally encapsulated in black epoxy, which has a certain light absorption property, reducing the light extraction efficiency of the backlight panel. In order to improve the light extraction efficiency of the backlight panel, the side of the driver chip 121 away from the circuit board 110 is coated with a reflective material.

[0053] In other embodiments of the present invention, the driver chip is integrated into the LED light-emitting device, which can improve the integration of the backlight board and further reduce the design difficulty and cost of the circuit board.

[0054] In some embodiments of the present invention, such as Figure 3As shown, the driving chip 121 and LED light-emitting device 122 in the driving light-emitting group 120 are disposed on the same side of the circuit board 110, that is, the circuit board 110 only needs to be designed with a single layer of circuit, which reduces the design cost and difficulty of the circuit board 110.

[0055] In some embodiments of the present invention, there may be intersections between the LED light-emitting chip and the wiring terminal. Metal jumpers are used to insulate and isolate the intersections of the connecting wires, so that all the wires on the circuit board 110 are concentrated on the same side. That is, the circuit board 110 only needs to be designed with a single layer of circuit, which reduces the cost of the circuit board 110. Figure 5 This is a schematic diagram of a metal jumper provided by the present invention. Figure 3 Taking the cross-section at the intersection of the conductors in region C as an example, as shown in the figure... Figure 3 , 5 As shown, the wire L1 connecting the red light-emitting chip intersects with the wire L2 connecting the green light-emitting chip and the wire L3 connecting the blue light-emitting chip in space. To avoid short circuits between the wires, a metal jumper is used at the intersection of wire L1, which crosses over wires L2 and L3 to achieve insulation isolation between wire L1 and wires L2 and L3.

[0056] In some embodiments of the present invention, a temperature sensor is also provided on the circuit board, and the temperature sensor is connected to a terminal block. For example, the temperature sensor can be located at the center of the circuit board to collect the temperature of the backlight panel. Because the brightness-temperature curves of the three light-emitting chips (R, G, and B) are inconsistent, the brightness of the three chips decreases at different rates as the backlight panel temperature rises. In particular, the brightness of the red light-emitting chip (R) is sensitive to temperature changes, leading to color distortion and affecting the display effect. The present invention can test and save the brightness-temperature curves of the three light-emitting chips in advance, measure the current compensation values ​​for achieving the same brightness level at different temperatures, and pre-program these values ​​into the driver chip. During the operation of the backlight panel, the temperature of the backlight panel is collected in real time by the temperature sensor, and the pre-saved current compensation values ​​are output to ensure that the brightness levels of the three light-emitting chips are consistent, thereby avoiding color distortion and improving the display effect.

[0057] Figure 6 This is a schematic diagram of another backlight panel provided by the present invention, as shown below. Figure 6 As shown, the difference between this embodiment and the previous embodiment is that each light-emitting zone A contains only one LED light-emitting device 122, which can reduce the area of ​​the light-emitting zone that can be individually controlled, enrich the detail level of the displayed image, and improve the display effect. The parts that are the same as those in the previous embodiment will not be described again here.

[0058] The present invention also provides a backlight module, including a backlight panel as provided in any of the foregoing embodiments of the present invention, wherein the backlight module can achieve the functions and effects achieved by the backlight panel provided in any of the foregoing embodiments of the present invention.

[0059] The present invention also provides a display panel, including a backlight module as provided in the foregoing embodiments of the present invention, which can achieve the functions and effects of the backlight panel provided in any of the foregoing embodiments of the present invention.

[0060] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0061] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0063] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A backlight panel, characterized in that, include: Circuit board; Multiple driving light groups are disposed on the circuit board. Each driving light group includes multiple cascaded driving chips and multiple strings of LED light-emitting devices. Each driving chip is connected to at least one string of LED light-emitting devices. Each string of LED light-emitting devices includes at least one LED light-emitting device. Each string of LED light-emitting devices serves as a light-emitting zone and is individually controlled by the corresponding driving chip to emit light. Each LED light-emitting device includes multiple LED light-emitting chips with different emitting colors. The wiring terminal is connected to the first driving chip in the driving light-emitting group. The LED chips of the same light-emitting color in the last LED of each string of LEDs in the driving light-emitting group share a common electrode and are connected to the wiring terminal. The driver chip includes a data input pin, a data output pin, a power input pin, a power output pin, a ground pin, and at least one set of light-emitting control pins; In the driving light-emitting group, the data input pin and power input pin of the first driving chip are both connected to the terminal block. The data input pin of the kth driving chip is connected to the data output pin of the (k-1)th driving chip, and the power input pin of the kth driving chip is connected to the power output pin of the (k-1)th driving chip, where k is a positive integer greater than 1. The ground pins of multiple driving chips in each string are connected. The data output pin of the last driving chip is connected to the terminal block, and the power output pin of the last driving chip is left floating. A set of light-emitting control pins is connected to a corresponding string of LED light-emitting devices.

2. The backlight panel according to claim 1, characterized in that, The LED light-emitting device includes three LED light-emitting chips with different light-emitting colors: a red light-emitting chip, a green light-emitting chip, and a blue light-emitting chip.

3. The backlight panel according to claim 1 or 2, characterized in that, Each group of light-emitting control pins includes multiple light-emitting control pins corresponding to the LED chips in the LED light-emitting device. The i-th light-emitting control pin is connected to the first electrode of the i-th LED chip in the first LED light-emitting device. The second electrode of the i-th LED chip in the j-th LED light-emitting device is connected to the first electrode of the i-th LED chip in the (j-1)-th LED light-emitting device. The second electrode of the i-th LED chip in the last LED light-emitting device is connected to the terminal block. i is a positive integer and j is a positive integer greater than 1.

4. The backlight panel according to claim 1 or 2, characterized in that, The number of driving chips in the driving light group is less than or equal to 10.

5. The backlight panel according to claim 1 or 2, characterized in that, The LED light-emitting device and the driving chip are disposed separately, and the side of the driving chip away from the circuit board is coated with a reflective material.

6. The backlight panel according to claim 1 or 2, characterized in that, The driver chip is integrated into the LED light-emitting device.

7. The backlight panel according to claim 1 or 2, characterized in that, The driving chip and the LED light-emitting device in the driving light-emitting group are disposed on the same side of the circuit board.

8. The backlight panel according to claim 7, characterized in that, The intersection of the LED light-emitting chip and the wiring terminal is insulated with a metal jumper.

9. The backlight panel according to claim 3, characterized in that, The formula for calculating the number of channels in the terminal block is: in, The number of channels in the terminal block. This refers to the number of LED chips in a single LED light-emitting device. This refers to the number of ground pins in the driver chip. This refers to the number of data input pins in the driver chip. This refers to the number of data output pins in the driver chip. This refers to the number of power input pins in the driver chip. For the number of partitions, The number of driving chips in the driving light-emitting group. This refers to the number of light-emitting control pin groups in a single driver chip.

10. The backlight panel according to claim 1, characterized in that, The circuit board is also equipped with a temperature sensor, which is connected to the terminal block.

11. A backlight module, characterized in that, Includes the backlight panel as described in any one of claims 1-10.

12. A display panel, characterized in that, Including the backlight module as described in claim 11.

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