Matrix light-emitting diode backlight driving method

Abstract

A matrix light-emitting diode (LED) backlight driving method, comprising: (a) arranging (M×N) LED driving circuits into a matrix having M rows and N columns, where M and N are positive integers greater than 1; (b) serially connecting in sequence the M LED driving circuits included in the first column of the N-column LED driving circuits, and respectively serially connecting in sequence the N LED driving circuits included in each row of the M-row LED driving circuits; (c) sequentially transmitting data signals to the (M×N) LED driving circuits through a first clock signal and a second clock signal; and (d) in each LED driving circuit, loading the data signal through a loading signal and outputting the data signal through a third clock signal.

Description

Technical Field

[0001] The present invention relates to the driving of light-emitting diode backlights, and more particularly to a method for driving a matrix light-emitting diode backlight. Background Art

[0002] Generally, a display using a conventional light-emitting diode (LED) backlight module cannot implement a local dimming function to optimize the image quality of the display, and the wiring for data transmission in the LED backlight driving circuit is complex, resulting in a large load caused by the wiring, seriously affecting the speed of data transmission, and causing poor display effects of the display. Summary of the Invention

[0003] In view of this, the present invention proposes a method for driving a matrix light-emitting diode backlight to effectively solve the above problems encountered in the prior art.

[0004] According to a specific embodiment of the present invention, there is provided a method for driving a matrix light-emitting diode (LED) backlight. In this embodiment, the method for driving a matrix light-emitting diode backlight includes the following steps: (a) arranging (M×N) light-emitting diode driving circuits into an (M×N) matrix having M rows of light-emitting diode driving circuits and N columns of light-emitting diode driving circuits, where M and N are both positive integers greater than 1; (b) serially connecting the M light-emitting diode driving circuits included in the first column of the N columns of light-emitting diode driving circuits in sequence, and respectively serially connecting the N light-emitting diode driving circuits included in each row of the M rows of light-emitting diode driving circuits in sequence; (c) sequentially transmitting a data signal to the (M×N) light-emitting diode driving circuits through a first clock signal and a second clock signal; and (d) in each light-emitting diode driving circuit, loading the data signal through a loading signal and outputting the data signal through a third clock signal.

[0005] In one embodiment, step (c) includes: (c1) sequentially transmitting the data signal to the M light-emitting diode driving circuits in the first column of light-emitting diode driving circuits through the first clock signal; and (c2) sequentially transmitting the data signal of each light-emitting diode driving circuit in the first column of light-emitting diode driving circuits to the N light-emitting diode driving circuits in the corresponding row of light-emitting diode driving circuits through the second clock signal.

[0006] In one embodiment, each light-emitting diode driving circuit respectively includes a set of flip-flop units and a storage unit, and step (d) includes: (d1) each light-emitting diode driving circuit stores the data signal from the set of flip-flop units to the storage unit through the loading signal.

[0007] In one embodiment, step (d) includes: (d2) Each light-emitting diode driving circuit generates an output signal with corresponding electrical characteristics according to the data signal stored in the storage unit through the third clock signal and then outputs it.

[0008] In one embodiment, the loading signal is turned on only when the data signals of the same frame of the picture have been respectively transmitted to the (M×N) light-emitting diode driving circuits.

[0009] In one embodiment, the starting timing of the first clock signal is the same as that of the data signal.

[0010] In one embodiment, the starting timings of the first clock signal and the second clock signal are staggered.

[0011] In one embodiment, after the first clock signal is turned on to transmit the data signal of one line, the second clock signal is turned on.

[0012] In one embodiment, after the first clock signal is turned on to transmit the data signal of one bit, the second clock signal is turned on.

[0013] In one embodiment, the (M×N) light-emitting diode driving circuits are mini light-emitting diode (Mini-LED) backlight driving integrated circuits.

[0014] Compared with the prior art, the present invention proposes a matrix light-emitting diode backlight driving method, which can replace the traditional light-emitting diode backlight driving method to achieve the function of regional dimming to optimize the display image quality, and can also greatly simplify the wiring between multiple light-emitting diode driving circuits, effectively reducing the load caused by the wiring, thereby increasing the data transmission speed and improving the display effect of the display.

[0015] The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the drawings. Description of the Drawings

[0016] Figure 1 It is a flowchart of the matrix light-emitting diode backlight driving method in a preferred specific embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the (M×N) light-emitting diode driving circuits arranged in a matrix.

[0018] Figure 3 It is a schematic diagram of the internal circuit structure of a single light-emitting diode driving circuit.

[0019] Figure 4 It is a timing diagram of each signal in an embodiment of the matrix light-emitting diode backlight driving method.

[0020] Figure 5Timing diagram of each signal for another embodiment of the matrix light-emitting diode backlight driving method.

[0021] Description of main component symbols:

[0022] S10 - S16... Steps

[0023] MX... (MxN) matrix

[0024] C1 - CM... First row LED driving circuit - Mth row LED driving circuit

[0025] R1 - RN... First column LED driving circuit - Nth column LED driving circuit

[0026] IC11 - ICMN... LED driving circuit

[0027] LOAD... Load signal

[0028] CKD... First clock signal

[0029] CKL... Second clock signal

[0030] CKP... Third clock signal

[0031] DAT... Data signal

[0032] DFF... Flip - flop unit group

[0033] DFF1 - DFFN... Flip - flops

[0034] SU... Storage unit

[0035] PWM... Pulse width modulation generation unit

[0036] CCU... Current control unit

[0037] OUT... Output signal

[0038] D1 - D2... Diodes

[0039] DOUT... Output data signal

[0040] CKO... Output clock signal

[0041] FK... Kth frame

[0042] F(K + 1)... (K + 1)th frame

[0043] S20 - S28... Steps

[0044] S30 - S41... Steps Detailed implementation manner

[0045] Reference will now be made in detail to exemplary embodiments of the present invention, and examples of the exemplary embodiments will be described in the accompanying drawings. Elements / components denoted by the same or similar reference numerals in the drawings and embodiments are used to represent the same or similar parts.

[0046] A specific embodiment according to the present invention is a matrix light-emitting diode backlight driving method. In this embodiment, the matrix light-emitting diode backlight driving method is used to drive a plurality of light-emitting diode (LED) driving circuits arranged in a matrix in the backlight module of a display, and the plurality of LED driving circuits may be mini light-emitting diode (Mini-LED) backlight driving integrated circuits; in other words, the present invention can use a plurality of mini light-emitting diode backlight driving integrated circuits arranged in a series-parallel matrix to drive a plurality of mini light-emitting diodes, as well as a transistor-transistor logic (TTL) data transmission method, but not limited thereto.

[0047] As Figure 1 shown, Figure 1 This is a flowchart of the matrix light-emitting diode backlight driving method in this embodiment. As Figure 1 shown, the matrix light-emitting diode (LED) backlight driving method may include the following steps:

[0048] Step S10: Arrange (M×N) LED driving circuits into an (M×N) matrix having M rows of LED driving circuits and N columns of LED driving circuits, where both M and N are positive integers greater than 1;

[0049] Step S12: Connect in series the M LED driving circuits included in the first column of LED driving circuits among the N columns of LED driving circuits, and respectively connect in series the N LED driving circuits included in each row of the M rows of LED driving circuits;

[0050] Step S14: Sequentially transmit a data signal to the (M×N) LED driving circuits through a first clock signal and a second clock signal; and

[0051] Step S16: In each LED driving circuit, load the data signal through a load signal and output the data signal through a third clock signal.

[0052] In one embodiment, step S14 may include the following sub-steps:

[0053] Sequentially transmit the data signal to the M LED driving circuits in the first column of driving circuits through the first clock signal; and

[0054] The data signals of each LED driving circuit in the first column of LED driving circuits are sequentially transmitted to N LED driving circuits in each corresponding row of LED driving circuits according to the second clock signal.

[0055] In an embodiment, each LED driving circuit may respectively include a set of flip-flop units and a storage unit. Step S16 may include the following sub-steps:

[0056] Each LED driving circuit stores the data signal from the set of flip-flop units to the storage unit through a loading signal; and

[0057] Each LED driving circuit generates an output signal with corresponding electrical characteristics according to the data signal stored in the storage unit through a third clock signal and then outputs it.

[0058] In practical applications, the loading signal is turned on only when the data signals of the same frame of the picture have been respectively transmitted to the (M×N) LED driving circuits. The opening timing of the first clock signal is the same as that of the data signal, and the opening timings of the first clock signal and the second clock signal are staggered.

[0059] It should be noted that the timing of turning on the second clock signal can be after turning on the first clock signal to transmit the data signal of one line, or after turning on the first clock signal to transmit the data signal of one bit, depending on the actual requirements, and there is no specific limitation.

[0060] As Figure 2 shown, Figure 2 is a schematic diagram of the (M×N) LED driving circuits arranged in a matrix. As Figure 2 shown, the method arranges the (M×N) LED driving circuit IC11~ICMN into an (M×N) matrix MX having M rows of LED driving circuits C1~CM and N columns of LED driving circuits R1~RN, where both M and N are positive integers greater than 1.

[0061] Next, the method sequentially connects in series the M LED driving circuits IC11~ICM1 included in the first column of LED driving circuits R1~RN among the N columns of LED driving circuits R1~RN, and respectively sequentially connects in series the N LED driving circuits included in each row of LED driving circuits among the M rows of LED driving circuits C1~CM, that is, the method sequentially connects in series the N LED driving circuits IC11~IC1N included in the first row of LED driving circuits C1, sequentially connects in series the N LED driving circuits IC21~IC2N included in the second row of LED driving circuits C2,..., and sequentially connects in series the N LED driving circuits ICM1~ICMN included in the Mth row of LED driving circuits CM.

[0062] Next, the method sequentially transmits the data signal DAT of the frame to be displayed to the (M×N) LED driving circuit IC11 to ICMN through the first clock signal CKD and the second clock signal CKL. Specifically, the method sequentially transmits the data signal DAT to the M LED driving circuits IC11 to ICM1 in the first column driving circuit R1 through the first clock signal CKD, and transmits the data signal DAT of each of the LED driving circuits IC11 to ICM1 in the first column LED driving circuit R1 to the N LED driving circuits IC11 to IC1N, IC21 to IC2N, …, ICM1 to ICMN in the corresponding each row LED driving circuits C1 to CM sequentially through the second clock signal CKL.

[0063] For example, the method sequentially transmits the data signal DAT of the LED driving circuit IC11 in the first column LED driving circuit R1 to the N LED driving circuits IC11 to IC1N in the corresponding first row LED driving circuit C1, sequentially transmits the data signal DAT of the LED driving circuit IC21 in the first column LED driving circuit R1 to the N LED driving circuits IC21 to IC2N in the corresponding second row LED driving circuit C2, sequentially transmits the data signal DAT of the LED driving circuit IC31 in the first column LED driving circuit R1 to the N LED driving circuits IC31 to IC3N in the corresponding third row LED driving circuit C3, …, sequentially transmits the data signal DAT of the LED driving circuit ICM1 in the first column LED driving circuit R1 to the N LED driving circuits ICM1 to ICMN in the corresponding Mth row LED driving circuit CM.

[0064] When the data signals DAT of the entire frame have been respectively transmitted to the (M×N) LED driving circuits IC11 to ICMN, the method will turn on the load signal LOAD. In each of the (M×N) LED driving circuits IC11 to ICMN, the method loads the data signal DAT through the load signal LOAD and outputs the data signal DAT through the third clock signal CKP.

[0065] Also as Figure 3 shown, Figure 3 is a schematic diagram of the internal circuit structure of a single LED driving circuit. As Figure 3 shown, taking the LED driving circuit IC11 as an example, the LED driving circuit IC11 includes K flip-flop unit groups DFF, K storage units SU, K pulse width modulation generation units PWM, and K current control units CCU. Each flip-flop unit group DFF includes N flip-flops DFF1 to DFFN. In this embodiment, K = 4, but it is not limited thereto.

[0066] When the data signals DAT of the entire frame of the picture have been respectively transmitted to the (MxN) LED driving circuits IC11 to ICMN, in the LED driving circuit IC11, the method loads the data signal DAT from the flip-flop unit group DFF to the storage unit SU for storage through the load signal LOAD. Then, the method performs pulse width modulation on the data signal DAT by the pulse width modulation generation unit PWM according to the third clock signal CKP, and after being processed by the current control unit CCU, an output signal OUT with corresponding electrical characteristics is generated and output to the display panel for display. As for the other LED driving circuits IC12 to ICMN, the same can be done by analogy, and will not be elaborated here.

[0067] As Figure 4 described, Figure 4 is the timing diagram of each signal of an embodiment of the matrix light-emitting diode backlight driving method. As Figure 4 shown, the start timing of the first clock signal CKD is the same as the start timing of the data signal DAT, and the start timing of the first clock signal CKD intersects with the start timing of the second clock signal CKL. That is, when the first clock signal CKD is turned on to transmit the data signal DAT, the second clock signal CKL remains off until the first clock signal CKD finishes transmitting the data signal DAT of one line, and then the method turns off the first clock signal CKD and turns on the second clock signal CKL.

[0068] Specifically, first, the method turns on the first clock signal CKD to sequentially transmit the data signal DAT of the Nth line to the flip-flop unit groups DFF of the M LED driving circuits IC11 to ICM1 in the first column driving circuit R1 (step S20). When step S20 is completed, the method turns on the second clock signal CKL to transmit the data signal DAT of the Nth line in the flip-flop unit groups DFF of the M LED driving circuits IC11 to ICM1 to the LED driving circuits IC12 to ICM2 below them respectively (step S21).

[0069] In other words, the LED driving circuit IC11 will transmit the data signal DAT of the Nth line in its flip-flop unit group DFF to the LED driving circuit IC12 below it, the LED driving circuit IC21 will transmit the data signal DAT of the Nth line in its flip-flop unit group DFF to the LED driving circuit IC22 below it, the LED driving circuit IC31 will transmit the data signal DAT of the Nth line in its flip-flop unit group DFF to the LED driving circuit IC32 below it, …, and the LED driving circuit ICM1 will transmit the data signal DAT of the Nth line in its flip-flop unit group DFF to the LED driving circuit ICM2 below it.

[0070] Next, the method turns on the first clock signal CKD to sequentially transmit the data signal DAT of the (N-1)th line to the flip-flop unit groups DFF of the M LED driving circuits IC11 to ICM1 in the first column driving circuit R1 (step S22). After step S22 is completed, the method turns on the second clock signal CKL to transmit the data signal DAT of the (N-1)th line in the flip-flop unit groups DFF of the M LED driving circuits IC11 to ICM1 to the LED driving circuits below them respectively (step S23). At the same time, the method also transmits the data signal DAT of the Nth line in the M LED driving circuits IC12 to ICM2 to the LED driving circuits IC13 to ICM3 below them respectively.

[0071] For example, the LED driving circuit IC11 transmits the data signal DAT of the (N-1)th line in its flip-flop unit group DFF to the LED driving circuit IC12 below it, the LED driving circuit IC21 transmits the data signal DAT of the (N-1)th line in its flip-flop unit group DFF to the LED driving circuit IC22 below it, the LED driving circuit IC31 transmits the data signal DAT of the (N-1)th line in its flip-flop unit group DFF to the LED driving circuit IC32 below it, …, the LED driving circuit ICM1 transmits the data signal DAT of the (N-1)th line in its flip-flop unit group DFF to the LED driving circuit ICM2 below it.

[0072] At the same time, the LED driving circuit IC12 will transmit the data signal DAT of the Nth line to the LED driving circuit IC13 below it again, the LED driving circuit IC22 will transmit the data signal DAT of the Nth line to the LED driving circuit IC23 below it again, the LED driving circuit IC32 will transmit the data signal DAT of the Nth line to the LED driving circuit IC33 below it again, …, the LED driving circuit ICM2 will transmit the data signal DAT of the Nth line to the LED driving circuit ICM3 below it again. The data signals DAT of the (N-2)th line to the third line can be deduced by analogy.

[0073] Next, the method turns on the first clock signal CKD to sequentially transmit the data signal DAT on the second line to the flip-flop unit groups DFF of the M LED driving circuits IC11 to ICM1 in the first column driving circuit R1 (step S24). After step S24 is completed, the method turns on the second clock signal CKL to transmit the data signal DAT on the second line in the flip-flop unit groups DFF of the M LED driving circuits IC11 to ICM1 to the LED driving circuits IC12 to ICM2 below them respectively (step S25). At the same time, the method also transmits the data signal DAT on the Nth line in the M LED driving circuits IC1(N - 1) to ICM(N - 1) to the LED driving circuits IC1N to ICMN below them respectively, transmits the data signal DAT on the (N - 1)th line in the M LED driving circuits IC1(N - 2) to ICM(N - 2) to the LED driving circuits IC1(N - 1) to ICM(N - 1) below them respectively, …, transmits the data signal DAT on the third line in the M LED driving circuits IC12 to ICM2 to the LED driving circuits IC13 to ICM3 below them respectively.

[0074] Next, the method turns on the first clock signal CKD to sequentially transmit the data signal DAT on the first line to the flip-flop unit groups DFF of the M LED driving circuits IC11 to ICM1 in the first column driving circuit R1 (step S26).

[0075] After step S26 is completed, at this time, the data signals DAT of the Kth frame image FK have been respectively transmitted to the (M×N) LED driving circuits IC11 to ICMN. Therefore, the method turns on the load signal LOAD to load the data signals DAT in the flip-flop unit groups DFF in the (M×N) LED driving circuits IC11 to ICMN into their respective storage units SU for storage. Then, the method performs pulse width modulation on the data signal DAT by the pulse width modulation generation unit PWM in the (M×N) LED driving circuits IC11 to ICMN according to the third clock signal CKP, and after being processed by the current control unit CCU, generates an output signal OUT with corresponding electrical characteristics and outputs it to the display panel for display.

[0076] After the Kth frame image FK ends, the next frame image, that is, the (K + 1)th frame image F(K + 1), will be entered. Its operation can refer to the previous steps. Steps S27 and S28 are the same as the previous steps S20 and S21, so they will not be described again here.

[0077] As Figure 5 shown, Figure 5 is the timing diagram of each signal of another embodiment of the matrix light-emitting diode backlight driving method. As Figure 5As shown, the turn-on timing of the first clock signal CKD is the same as that of the data signal DAT, and the turn-on timing of the first clock signal CKD intersects with that of the second clock signal CKL. That is, when the first clock signal CKD is turned on to transmit the data signal DAT, the second clock signal CKL remains off until the first clock signal CKD finishes transmitting one bit of the data signal DAT, and then the method turns off the first clock signal CKD and turns on the second clock signal CKL.

[0078] Specifically, assuming that each of the N lines includes J bits (J is a positive integer), first, the method turns on the first clock signal CKD to sequentially transmit the data signal DAT of the 0th bit of the Nth line to the flip-flop unit groups DFF of the M LED driver circuits IC11 to ICM1 in the first column driver circuit R1 (step S30). After step S30 is completed, the method turns on the second clock signal CKL to transmit the data signal DAT of the 0th bit of the Nth line in the flip-flop unit groups DFF of the M LED driver circuits IC11 to ICM1 to the LED driver circuits IC12 to ICM2 below them respectively (step S31).

[0079] Next, the method turns on the first clock signal CKD to sequentially transmit the data signal DAT of the 1st bit of the Nth line to the flip-flop unit groups DFF of the M LED driver circuits IC11 to ICM1 in the first column driver circuit R1 (step S32). After step S32 is completed, the method turns on the second clock signal CKL to transmit the data signal DAT of the 1st bit of the Nth line in the flip-flop unit groups DFF of the M LED driver circuits IC11 to ICM1 to the LED driver circuits IC12 to ICM2 below them respectively (step S33). At the same time, the method also transmits the data signal DAT of the 0th bit of the Nth line in the M LED driver circuits IC12 to ICM2 to the LED driver circuits IC13 to ICM3 below them respectively.

[0080] Next, the method repeats the above steps S30 to S33 to sequentially transmit the data signal DAT of the 2nd bit to the Jth bit of the Nth line to the flip-flop unit groups DFF of the M LED driver circuits IC11 to ICM1 in the first column driver circuit R1 and then transmit them to the LED driver circuits below respectively (step S34), thereby transmitting all J bits in the Nth line to the (M×N) LED driver circuits IC11 to ICMN.

[0081] Similarly, the method enables the first clock signal CKD to sequentially transmit the data signal DAT of the 0th bit of the (N - 1)th line to the flip - flop unit groups DFF of the M LED driver circuits IC11 to ICM1 in the first column driver circuit R1 (step S35). After step S35 is completed, the method enables the second clock signal CKL to transmit the data signal DAT of the 0th bit of the (N - 1)th line in the flip - flop unit groups DFF of the M LED driver circuits IC11 to ICM1 to the LED driver circuits IC12 to ICM2 below them respectively (step S36).

[0082] Next, the method enables the first clock signal CKD to sequentially transmit the data signal DAT of the 1st bit of the (N - 1)th line to the flip - flop unit groups DFF of the M LED driver circuits IC11 to ICM1 in the first column driver circuit R1 (step S37). After step S37 is completed, the method enables the second clock signal CKL to transmit the data signal DAT of the 1st bit of the (N - 1)th line in the flip - flop unit groups DFF of the M LED driver circuits IC11 to ICM1 to the LED driver circuits IC12 to ICM2 below them respectively (step S38). At the same time, the method also transmits the data signal DAT of the 0th bit of the (N - 1)th line in the M LED driver circuits IC12 to ICM2 to the LED driver circuits IC13 to ICM3 below them respectively.

[0083] Next, the method repeats the above steps S35 to S38 to sequentially transmit the data signals DAT of the 2nd bit to the Jth bit of the (N - 1)th line to the flip - flop unit groups DFF of the M LED driver circuits IC11 to ICM1 in the first column driver circuit R1 and then transmit them to the LED driver circuits below respectively (step S39), so as to transmit all J bits in the (N - 1)th line to the (M x N) LED driver circuits IC11 to ICMN.

[0084] Next, the method can repeat the above steps S30 to S38 to transmit the J bits in the (N - 2)th line, the J bits in the (N - 3)th line, …, the J bits in the second line to the (M x N) LED driver circuits IC11 to ICMN respectively (step S40), and so on until the last bit (the Jth bit) of the first line. At this time, the method enables the first clock signal CKD to sequentially transmit the data signal DAT of the Jth bit of the first line to the flip - flop unit groups DFF of the M LED driver circuits IC11 to ICM1 in the first column driver circuit R1, so as to transmit all J bits of the first line to the (M x N) LED driver circuits IC11 to ICMN.

[0085] After step S41 is completed, at this time, all (NxJ) bit data signals DAT of the first to the Nth lines of the Kth frame image FK have been respectively transmitted to the (MxN) LED driving circuits IC11 to ICMN. Therefore, the method enables the load signal LOAD to load the data signal DAT of the flip-flop unit group DFF in the (MxN) LED driving circuits IC11 to ICMN into the storage unit SU for storage. Then, after the method performs pulse width modulation on the data signal DAT by the pulse width modulation generation unit PWM according to the third clock signal CKP, and then processes it through the current control unit CCU to generate an output signal OUT with corresponding electrical characteristics, and then outputs it to the display panel for display.

[0086] After the Kth frame image FK ends, it will enter the next frame image, that is, the (K + 1)th frame image F(K + 1). Its operation can refer to the previous steps, so it will not be elaborated here.

[0087] Compared with the prior art, the present invention proposes a matrix light-emitting diode backlight driving method, which can replace the traditional light-emitting diode backlight driving method to achieve the function of regional dimming to optimize the display quality of the display, and can also greatly simplify the wiring between multiple light-emitting diode driving circuits, effectively reducing the load caused by the wiring, thereby increasing the data transmission speed and improving the display effect of the display.

Claims

1. A matrix light-emitting diode backlight driving method, characterized in that, Including the following steps: (a) Arrange M×N light-emitting diode driving circuits into an M×N matrix having M rows and N columns of light-emitting diode driving circuits, where both M and N are positive integers greater than 1; (b) Connect in series the M light-emitting diode driving circuits included in a first column of the N columns of light-emitting diode driving circuits in sequence, and respectively connect in series the N light-emitting diode driving circuits included in each row of the M rows of light-emitting diode driving circuits in sequence; (c) Sequentially transmit a data signal to the M×N light-emitting diode driving circuits through a first clock signal and a second clock signal; and (d) In each light-emitting diode driving circuit, load the data signal through a load signal and output the data signal through a third clock signal, Step (c) includes: (c1) Sequentially transmit the data signal to the M light-emitting diode driving circuits in the first column of light-emitting diode driving circuits through the first clock signal; And (c2) Sequentially transmit the data signal of each light-emitting diode driving circuit in the first column of light-emitting diode driving circuits to the N light-emitting diode driving circuits in the corresponding row of light-emitting diode driving circuits through the second clock signal, and the start timings of the first clock signal and the second clock signal are staggered.

2. The matrix light-emitting diode backlight driving method according to claim 1, wherein Each light-emitting diode driving circuit respectively includes a set of flip-flop units and a storage unit. Step (d) includes: (d1) Each light-emitting diode driving circuit loads the data signal from the set of flip-flop units to the storage unit for storage through the load signal.

3. The matrix light-emitting diode backlight driving method according to claim 2, wherein Step (d) includes: (d2) Each light-emitting diode driving circuit generates an output signal with corresponding electrical characteristics according to the data signal stored in the storage unit through the third clock signal and then outputs it.

4. The matrix light-emitting diode backlight driving method according to claim 1, wherein The load signal is turned on only when the data signals of the same frame have been respectively transmitted to the M×N light-emitting diode driving circuits.

5. The matrix light-emitting diode backlight driving method according to claim 1, wherein The start timing of the first clock signal is the same as that of the data signal.

6. The matrix light-emitting diode backlight driving method according to claim 1, wherein When the first clock signal is turned on to transmit the data signal of one line, the second clock signal is turned on.

7. The matrix light-emitting diode backlight driving method according to claim 1, wherein When the first clock signal is turned on to transmit the data signal of one bit, the second clock signal is turned on.

8. The matrix light-emitting diode backlight driving method according to claim 1, wherein The M×N light-emitting diode driving circuits are mini light-emitting diode backlight driving integrated circuits.

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