Spread spectrum method for eliminating water ripples, display panel and storage medium

Abstract

The application discloses a method for eliminating water ripples, a display panel and a storage medium, and the method comprises the following steps: obtaining a first spread spectrum signal by spreading and processing a clock signal of a previous frame; resetting the first spread spectrum signal, and outputting the clock signal of a current frame to a gate chip after spreading and processing the clock signal of the current frame according to the reset first spread spectrum signal, so that the gate chip controls the charging time of the same row of pixel driving circuits to be the same in different frames; and the technical scheme is designed to eliminate the water ripples of the display panel while reducing the electromagnetic interference of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display panel technology, and in particular to a spread spectrum method for eliminating water ripples, a display panel, and a storage medium. Background Technology

[0002] Currently, to reduce electromagnetic interference (EMI) generated by high-order harmonics in digital and clock signals within and between electronic systems, spread-spectrum clock generators (SSCGs) are commonly used to disperse the energy of the clock signal. However, spreading the clock signal also brings problems. The larger the spread amplitude of the spread-spectrum clock, the better the effect of reducing EMI. But changes in clock frequency affect the charging time of the panel, and LCD panels that are sensitive to charging time are prone to exhibiting a wavy scrolling effect. Summary of the Invention

[0003] The main objective of this invention is to provide a spread spectrum method, display panel, and storage medium for eliminating water ripples, aiming to reduce electromagnetic interference on the display panel while eliminating water ripples on the display panel.

[0004] To achieve the above objectives, the present invention proposes a spread spectrum method for eliminating water ripples. The display panel includes a gate chip, a source chip, and a driving array composed of multiple pixel driving circuits. The gate chip and the source chip are electrically connected to the driving array. The gate chip and the source chip are respectively used to receive a clock signal and, according to the clock signal, jointly charge the pixel driving circuit corresponding to each row. The spread spectrum method for eliminating water ripples includes:

[0005] Obtain the first spread spectrum signal by performing spread spectrum processing on the clock signal of the previous frame;

[0006] The first spread spectrum signal is reset, and the clock signal of the current frame is spread spectrum processed according to the reset first spread spectrum signal and then output to the gate chip, so that the gate chip controls the charging time of the pixel driving circuit in the same row to be the same in different frames.

[0007] In some embodiments, resetting the first spread spectrum signal specifically includes:

[0008] Obtain the first position in the period of the first spread spectrum signal that matches the initial time of the previous frame;

[0009] The position of the first spread spectrum signal that matches the initial moment of the current frame within the cycle is the same as the first position.

[0010] In some embodiments, the step of spreading the clock signal of the current frame based on the reset first spread spectrum signal specifically includes:

[0011] Get the initial time of the current frame;

[0012] The first spread spectrum signal is adjusted so that the start time of the period of the first spread spectrum signal matches the initial time of the current frame before spread spectrum is performed.

[0013] In some embodiments, the step of spreading the clock signal of the current frame based on the reset first spread spectrum signal specifically includes:

[0014] Obtain the clock signal after spread spectrum of the clock signal from the previous frame;

[0015] The clock signal of the current frame is spread using the first spread spectrum signal after reset, so that the start time of the spread spectrum clock signal of the current frame is synchronized with the start time of the spread spectrum clock signal of the previous frame.

[0016] In some embodiments, the frequency spreading method for eliminating water ripples further includes:

[0017] Acquire a second spread spectrum signal, wherein the waveform of the first spread spectrum signal is opposite to the waveform of the second spread spectrum signal;

[0018] The clock signals of different frames are alternately spread-spectrum processed by the first spread-spectrum signal and the second spread-spectrum signal after reset, and then output to the gate chip.

[0019] In some embodiments, the frequency spreading method for eliminating water ripples further includes:

[0020] The first spread spectrum signal is reset at the end of the previous alternation period, with a preset number of rows as the alternation period;

[0021] The clock signal in the current alternation cycle is spread-spectrum processed based on the first spread-spectrum signal after reset.

[0022] The present invention also proposes a display panel, the display panel comprising a timing control circuit, a gate chip, a source chip, and a driving array composed of multiple pixel driving circuits;

[0023] The timing control circuit is electrically connected to the gate chip and the source chip respectively, and the gate chip and the source chip are electrically connected to the driving array respectively;

[0024] The timing control circuit is used to output clock signals to the gate chip and the source chip respectively, so that the gate chip and the source chip jointly charge the pixel driving circuit corresponding to each row according to the clock signal;

[0025] The timing control circuit is further configured to obtain a first spread spectrum signal for spreading the clock signal of the previous frame based on the signal waveform of the first spread spectrum signal output in the previous frame; and the timing control circuit is further configured to reset the first spread spectrum signal, and output the clock signal of the current frame to the gate chip after spreading the clock signal of the current frame based on the reset first spread spectrum signal, so that the gate chip controls the charging time of the same row of pixel driving circuits in different frames to be the same.

[0026] In some embodiments, the timing control circuit is further configured to obtain a second spread spectrum signal based on the waveform of the first spread spectrum signal after reset, wherein the waveform of the first spread spectrum signal is opposite to the waveform of the second spread spectrum signal; and the timing control circuit is further configured to alternately perform spread spectrum processing on clock signals of different frames based on the first spread spectrum signal after reset and the second spread spectrum signal after reset, and then output the processed signals to the gate chip.

[0027] In some embodiments, the timing control circuit is further configured to reset the first spread spectrum signal at the end of the previous alternation period with a preset number of rows as the alternation period; and to perform spread spectrum processing on the clock signal in the current alternation period based on the reset first spread spectrum signal and output it to the gate chip.

[0028] The present invention also proposes a storage medium comprising the above-described method for eliminating water ripples by spreading.

[0029] The technical solution of this invention obtains a first spread spectrum signal by performing spread spectrum processing on the clock signal of the previous frame, and then obtains the original starting position of the first spread spectrum signal of the current frame. This resets the first spread spectrum signal, adjusts its starting position, and performs spread spectrum processing on the clock signal of the current frame based on the reset first spread spectrum signal before outputting it to the gate chip. This ensures that the gate chip controls the charging time of the same row of pixel driving circuits to be the same in both frames. This process is repeated for each subsequent frame, adjusting the first spread spectrum signal to ensure that the starting position of each frame is the same. This ensures that the clock signal jitter received by the same row of pixel driving circuits is the same in different frames, thus making their charging time the same in different frames and avoiding the generation of a ripple effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic flowchart of an embodiment of the frequency spread spectrum method for eliminating water ripples according to the present invention;

[0032] Figure 2 This is a flowchart illustrating an embodiment of step S200 in the present invention;

[0033] Figure 3 This is a flowchart illustrating another embodiment of step S200 in the present invention;

[0034] Figure 4 This is a flowchart illustrating another embodiment of step S200 in the present invention;

[0035] Figure 5 This is a schematic diagram of another embodiment of the frequency spread spectrum method for eliminating water ripples according to the present invention;

[0036] Figure 6 This is a schematic diagram of another embodiment of the frequency spread spectrum method for eliminating water ripples according to the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of a display panel according to an embodiment of the present invention;

[0038] Figure 8 This is a comparative diagram of an embodiment of the frequency spread spectrum method for eliminating water ripples according to the present invention;

[0039] Figure 9 This is a signal waveform diagram of an embodiment of the spread spectrum method for eliminating water ripples according to the present invention.

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0043] This invention proposes a frequency spread method for eliminating water ripples.

[0044] Reference Figure 1 and Figure 7 In one embodiment, the display panel includes a gate chip 520, a source chip 530, and a driving array 540 composed of multiple pixel driving circuits; the gate chip 520 and the source chip 530 are electrically connected to the driving array 540; the gate chip 520 and the source chip 530 are respectively used to receive a clock signal and jointly charge the pixel driving circuit corresponding to each row according to the clock signal; the spread spectrum method for eliminating water ripples includes:

[0045] S100: Obtain the first spread spectrum signal after performing spread spectrum processing on the clock signal of the previous frame;

[0046] It should be noted that, referring to Figure 6 When the display is working normally, the gate chip 520 controls the conduction of each row of pixel driving circuits according to the received clock signal. When the pixel driving circuit is conducted, the source chip 530 charges the pixel driving circuit of that row according to the data signal output by the data line. At this time, since the frequency of the clock signal is fixed and the charging time is determined by the relative timing of the clock signal and the data signal, the charging time of each row of pixel driving circuits is the same in different frames.

[0047] However, during the spread spectrum operation of the clock signal by the timing control circuit 510, the same first spread spectrum signal is not interrupted after output. This means that after the first frame ends, the first spread spectrum signal may not have completed a cycle of output. As a result, the first spread spectrum signal corresponding to the starting position of the second frame is not the same as the first spread spectrum signal corresponding to the starting position of the first frame. Over time, the starting position of each frame will be different. This will cause the clock signal jitter received by the same row of pixel driving circuits in different frames to be different, and thus the charging time in different frames will also be different, resulting in the water ripple phenomenon.

[0048] In this embodiment, when the timing control circuit 510 of the display panel spreads the clock signal of the previous frame, it needs to modulate the clock signal according to the waveform of the first spread signal. In order to avoid the use of different first spread signals in each subsequent frame, the first spread signal that has completed one frame of spread needs to be interrupted when the spread of the previous frame is completed, and the parameters of the first spread signal in the previous frame are obtained, such as the time point in the cycle at the start and the time point in the cycle at the end, so that the timing control circuit 510 can adjust the first spread signal at the beginning of the current frame according to the parameters of the previous frame.

[0049] S200: Reset the first spread spectrum signal, and output the clock signal of the current frame to the gate chip 520 after spreading the spectrum according to the reset first spread spectrum signal, so that the gate chip 520 controls the charging time of the same row of pixel driving circuits in different frames to be the same.

[0050] In this embodiment, in order to ensure that the charging time of each row of pixel driving circuits under the drive of the gate chip 520 is the same in the current frame as its charging time in the previous frame, the timing control circuit 510 needs to reset the first spread spectrum signal at the beginning of the current frame. This ensures that the jitter mode of the clock signal in the current frame after spread spectrum is the same as that in the previous frame. Taking a display panel with a resolution of 960×540 as an example, after the clock signal of the previous frame is spread spectrum, its frequency gradually shifts to the left starting from the first row, gradually shifts back to the original frequency starting from the 135th row, and gradually shifts to the right starting from the 270th row. When the first spread spectrum signal is reset and spread spectrum is performed again in the current frame, the frequency jitter also gradually shifts to the left starting from the first row, gradually shifts back to the original frequency starting from the 135th row, gradually shifts to the right starting from the 270th row, and so on, so that the jitter mode of the clock signal is the same in each frame. This drives the gate chip 520 to control the charging time of the same row of pixel driving circuits to be the same in different frames.

[0051] The technical solution of this invention obtains a first spread spectrum signal by performing spread spectrum processing on the clock signal of the previous frame, and then obtains the original starting position of the first spread spectrum signal of the current frame. This resets the first spread spectrum signal, adjusts its starting position, and performs spread spectrum processing on the clock signal of the current frame based on the reset first spread spectrum signal before outputting it to the gate chip 520. This ensures that the gate chip 520 controls the charging time of the same row of pixel driving circuits to be the same in two frames. This process is repeated for each subsequent frame, adjusting the first spread spectrum signal to ensure that the starting position of each frame is the same. This ensures that the jitter of the clock signal received by the same row of pixel driving circuits is the same in different frames, thus making their charging time the same in different frames and avoiding the generation of a ripple effect.

[0052] Reference Figure 2 and Figure 7 In one embodiment, resetting the first spread spectrum signal specifically includes:

[0053] S211. Obtain the first position in the period of the first spread spectrum signal that matches the initial time of the previous frame;

[0054] S212, The position of the first spread spectrum signal that matches the initial time of the current frame in the cycle is the same as the first position.

[0055] In this embodiment, the first position is a preset time point in the period of the first spread spectrum signal.

[0056] To ensure that the jitter of the clock signals received by the same row of pixel driving circuits is the same in different frames, the positions of the first spread spectrum signal corresponding to the clock signals received by the same row of pixel driving circuits in different frames during spread spectrum operation must be the same within one cycle. Therefore, at the beginning of the current frame, the position of the first spread spectrum signal in the current frame needs to be aligned with its first position in the previous frame. In other words, the preset time point in the cycle of the first spread spectrum signal in the current frame needs to coincide with the preset time point in the cycle of the previous frame. For example, if the initial time of the first spread spectrum signal in the previous frame was at the peak of one cycle, then after resetting the first spread spectrum signal, its initial time in the current frame should also be at the peak of one cycle.

[0057] Reference Figure 3 and Figure 7 In one embodiment, the step of spreading the clock signal of the current frame according to the first spread-spectrum signal after reset and then outputting it to the gate chip 520 so that the gate chip 520 controls the charging time of the same row of pixel driving circuits to be the same in different frames includes:

[0058] S221. Obtain the initial time of the current frame;

[0059] S222. Adjust the first spread spectrum signal so that the start time of the period of the first spread spectrum signal matches the initial time of the current frame before spreading spectrum is performed.

[0060] In this embodiment, it is known that the first spread spectrum signal is reset before spreading the clock signal of each frame. The position of the first spread spectrum signal in the period that matches the initial time of the current frame is the same as the first position. So when the gate chip and source chip are driven by the clock signal to charge the pixel circuit, it is only necessary to match the start time of the period of the first spread spectrum signal with the initial time of the current frame. This will make the initial time in each frame jitter in the same way. The multiple clock signals after spread spectrum are almost the same. This will make the pixel driving circuit of each row keep the charging time in each frame the same under the drive of the gate chip 520.

[0061] Reference Figure 4 and Figure 7 In one embodiment, the step of spreading the clock signal of the current frame according to the first spread-spectrum signal after reset and then outputting it to the gate chip 520 so that the gate chip 520 controls the charging time of the same row of pixel driving circuits to be the same in different frames includes:

[0062] S223. Obtain the clock signal after spread spectrum of the clock signal of the previous frame;

[0063] S224. Spread the clock signal of the current frame using the first spread spectrum signal after reset, so that the start time of the spread spectrum clock signal of the current frame is synchronized with the start time of the spread spectrum clock signal of the previous frame.

[0064] In this embodiment, the initial time of the spread spectrum signal in each frame is the same. This is ultimately reflected in the clock signal by making the clock signal in each frame jittered in a fixed way to form the same clock signal. Thus, when the clock signal is applied to each frame, it is only necessary to synchronize the start time of the spread spectrum clock signal of the current frame input to the gate chip 520 with the start time of the spread spectrum clock signal of the previous frame. This will enable the pixel driving circuit of each row to maintain the same charging time in each frame under the drive of the gate chip 520.

[0065] It should be noted that although resetting the spread spectrum signal every frame ensures that the clock signal starts from the same spread spectrum amplitude during each frame, thus guaranteeing consistent brightness across different frames within the same row and eliminating the water ripple effect, the brightness across different rows within the same frame still varies, resulting in fixed horizontal lines.

[0066] Therefore, referring to Figure 5 and Figure 7 In one embodiment, the frequency spread spectrum method for eliminating water ripples further includes:

[0067] S310. Obtain a second spread spectrum signal, wherein the waveform of the first spread spectrum signal is opposite to the waveform of the second spread spectrum signal;

[0068] S320: The clock signals of different frames are alternately spread-spectrum processed according to the first spread-spectrum signal and the second spread-spectrum signal after reset, and then output to the gate chip.

[0069] In this embodiment, the alternating spread spectrum of clock signals for different frames can be performed with an alternation period of 1 frame, 2 frames, 3 frames, etc. The specific number of frames can be determined by the display's frame rate and the designer based on the actual effect requirements.

[0070] During each alternation cycle, the timing control circuit 510 of the display panel resets the spread spectrum signal used and obtains the position of the spread spectrum signal in the current alternation cycle within the alternation cycle at the beginning of the previous frame, so that the timing control circuit 510 can adjust the spread spectrum signal at the beginning of the current frame according to the position of the previous frame.

[0071] In each two adjacent alternating cycles, the spread spectrum signal waveform used is completely opposite, such as... Figure 7As shown, taking the spread spectrum signal described by the solid line as the first spread spectrum signal and the spread spectrum signal described by the dashed line as the second spread spectrum signal as an example, if the first spread spectrum signal is used in the first alternation cycle, then in this alternation cycle, the clock signal of each frame will initially shift to the left. In the second alternation cycle, if the second spread spectrum signal is used, then in this alternation cycle, the clock signal of each frame will initially shift to the right.

[0072] Over time, this causes the clock signal to jitter in the same way in each alternation cycle, but in opposite ways in every two adjacent alternation cycles. This causes the gate chip 520 to control the overcharging and undercharging charging time of each row of the same row of pixel driving circuits to cancel each other out at the average frame rate, thus eliminating both fixed horizontal lines and water ripples.

[0073] In one embodiment, the clock signal is alternately spread-spectrum processed according to the first spread-spectrum signal and the second spread-spectrum signal after reset, with one frame as the alternation period, and then output.

[0074] In this embodiment, the step of alternately performing spread spectrum processing on the clock signal based on the reset first spread spectrum signal and the second spread spectrum signal is specifically manifested as follows: in the 2N-1 frame, the timing control circuit 510 performs spread spectrum processing on the clock signal of the current frame based on the pre-stored first spread spectrum signal; and in the 2N frame, the timing control circuit 510 performs spread spectrum processing on the clock signal of the current frame based on the pre-stored second spread spectrum signal; where N is an integer greater than 0.

[0075] When the display panel is working, if the previous frame of spread spectrum is completed, the first spread spectrum signal that has completed one frame of spread spectrum is interrupted, and the time point of the first spread spectrum signal within one cycle at the beginning of the previous frame is obtained, so that the timing control circuit 510 resets the current first spread spectrum signal according to the time point, and obtains a second spread spectrum signal with the opposite waveform according to the reset first spread spectrum signal, and performs spread spectrum processing on the row scanning clock signal output in the next frame according to the second spread spectrum signal and outputs it.

[0076] When the second spread spectrum signal completes one frame of spread spectrum, the time point of the second spread spectrum signal within one cycle at the beginning of the previous frame is obtained, so that the timing control circuit 510 resets the current second spread spectrum signal according to the time point, and obtains the first spread spectrum signal with the opposite waveform according to the reset second spread spectrum signal, and performs spread spectrum processing on the row scanning clock signal output in the next frame according to the first spread spectrum signal and outputs it.

[0077] Reference Figures 6 to 7 In one embodiment, the frequency spread spectrum method for eliminating water ripples further includes:

[0078] S410. Using a preset number of rows as the alternation period, the first spread spectrum signal is reset at the end of the previous alternation period;

[0079] S420: The clock signal in the current alternation cycle is spread-spectrum processed according to the first spread-spectrum signal after reset and then output to the gate chip.

[0080] In this embodiment, when the display panel is working, the first spread spectrum signal is reset once every preset number of clock signals, so that the charging time of the pixel driving circuits in as many rows as possible in a frame is the same, reducing the number of horizontal lines. Ideally, the first spread spectrum signal can be reset when the clock signal of each row is output, so that the charging time of each row of pixel driving circuits is the same in different frames.

[0081] Reference Figures 7 to 9 The present invention also proposes a display panel, the display panel including a timing control circuit 510, a gate chip 520, a source chip 530 and a driving array 540 composed of multiple pixel driving circuits;

[0082] The timing control circuit 510 is electrically connected to the gate chip 520 and the source chip 530 respectively, and the gate chip 520 and the source chip 530 are electrically connected to the driving array 540 respectively.

[0083] The timing control circuit 510 is used to output clock signals to the gate chip 520 and the source chip 530 respectively, so that the gate chip 520 and the source chip 530 jointly charge the pixel driving circuit corresponding to each row according to the clock signal.

[0084] The timing control circuit 510 is further configured to obtain a first spread spectrum signal for spreading the clock signal of the previous frame based on the signal waveform of the first spread spectrum signal output in the previous frame; and the timing control circuit 510 is further configured to reset the first spread spectrum signal, and then spread the clock signal of the current frame based on the reset first spread spectrum signal and output it to the gate chip 520, so that the gate chip 520 controls the charging time of the same row of pixel driving circuits to be the same in different frames.

[0085] In this embodiment, when the previous frame of spread spectrum is completed, the timing control circuit 510 of the display panel interrupts the first spread spectrum signal that has completed one frame of spread spectrum, and obtains the parameters of the first spread spectrum signal in the previous frame, such as the time point in the cycle at the start and the time point in the cycle at the end, so that the timing control circuit 510 can adjust the first spread spectrum signal at the beginning of the current frame according to the parameters of the previous frame, so that the jitter mode of the clock signal in the current frame after spread spectrum is the same as that in the previous frame, so that the jitter mode of the clock signal is the same in each frame, thereby driving the gate chip 520 to control the charging time of the same row of pixel driving circuits to be the same in different frames.

[0086] The technical solution of this invention obtains a first spread spectrum signal by performing spread spectrum processing on the clock signal of the previous frame, and obtains the original starting position of the first spread spectrum signal of the current frame. This resets the first spread spectrum signal, adjusts the starting position of the first spread spectrum signal of the current frame, and performs spread spectrum processing on the clock signal of the current frame based on the reset first spread spectrum signal before outputting it to the gate chip 520. This ensures that the gate chip 520 controls the charging time of the same row of pixel driving circuits to be the same in two frames. This process is repeated for each subsequent frame, adjusting the first spread spectrum signal to ensure that the starting position of each frame is the same. This ensures that the clock signal jitter received by the same row of pixel driving circuits is the same in different frames, thus making their charging time the same in different frames and avoiding the generation of water ripples.

[0087] Reference Figures 7 to 9 In one embodiment, the timing control circuit 510 is further configured to obtain a second spread spectrum signal based on the waveform of the first spread spectrum signal after reset, wherein the waveform of the first spread spectrum signal is opposite to the waveform of the second spread spectrum signal; and the timing control circuit 510 is further configured to alternately perform spread spectrum processing on clock signals of different frames based on the first spread spectrum signal after reset and the second spread spectrum signal after reset, and then output the results to the gate chip 520.

[0088] In this embodiment, during each alternation cycle, the timing control circuit 510 of the display panel resets the spread spectrum signal used and obtains the time point of the spread spectrum signal in the current alternation cycle within the cycle at the beginning of the previous frame, so that the timing control circuit 510 can adjust the spread spectrum signal at the beginning of the current frame according to the time point of the previous frame.

[0089] At the end of each alternation cycle, the timing control circuit 510 resets the used spread spectrum signal and obtains a spread spectrum signal opposite to it. If the first spread spectrum signal was used in the previous alternation cycle, the second spread spectrum signal is used in the current cycle to spread the clock signal for the preset number of frames. Similarly, if the first spread spectrum signal was used in the previous alternation cycle, the first spread spectrum signal is used in the current cycle to spread the clock signal for the preset number of frames. Over time, this ensures that the jitter pattern of the clock signal is the same in each alternation cycle, but opposite in every two adjacent alternation cycles. This drives the gate chip 520 to control the overcharging and undercharging times of the same row of pixel driving circuits to cancel each other out at the average frame rate, thus eliminating both fixed horizontal lines and water ripples.

[0090] Reference Figures 7 to 9 In one embodiment, the timing control circuit 510 is further configured to reset the first spread spectrum signal at the end of the previous alternation period with a preset number of rows as the alternation period; and to perform spread spectrum processing on the clock signal in the current alternation period based on the reset first spread spectrum signal and output it to the gate chip 520.

[0091] In this embodiment, when the display panel is working, the first spread spectrum signal is reset once every preset number of clock signals, so that the charging time of the pixel driving circuits in as many rows as possible in a frame is the same, reducing the number of horizontal lines. Ideally, the first spread spectrum signal can be reset when the clock signal of each row is output, so that the charging time of each row of pixel driving circuits is the same in different frames.

[0092] The present invention also proposes a storage medium comprising the above-described method for eliminating water ripples by spreading the frequency. The specific structure of the method for eliminating water ripples by spreading the frequency is as described in the above embodiments. Since the storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0093] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A spread spectrum method for eliminating water ripples, used in a display panel, characterized in that, The display panel includes a gate chip, a source chip, and a driving array composed of multiple pixel driving circuits; the gate chip and the source chip are electrically connected to the driving array respectively; the gate chip and the source chip are respectively used to receive a clock signal, and together charge the pixel driving circuit corresponding to each row according to the clock signal; The frequency spread method for eliminating water ripples includes: Obtain the first spread spectrum signal by performing spread spectrum processing on the clock signal of the previous frame; The first spread spectrum signal is reset, and the clock signal of the current frame is spread spectrum processed according to the reset first spread spectrum signal and then output to the gate chip, so that the gate chip controls the charging time of the pixel driving circuit in the same row in different frames to be the same. Specifically, resetting the first spread spectrum signal includes: Obtain the first position in the period of the first spread spectrum signal that matches the initial time of the previous frame; The position of the first spread spectrum signal that matches the initial moment of the current frame within the cycle is the same as the first position.

2. The frequency spread method for eliminating water ripples as described in claim 1, characterized in that, The step of performing spread spectrum processing on the clock signal of the current frame based on the first spread spectrum signal after reset specifically includes: Get the initial time of the current frame; The first spread spectrum signal is adjusted so that the start time of the period of the first spread spectrum signal matches the initial time of the current frame before spread spectrum is performed.

3. The frequency spread method for eliminating water ripples as described in claim 1, characterized in that, The step of performing spread spectrum processing on the clock signal of the current frame based on the first spread spectrum signal after reset specifically includes: Obtain the clock signal after spread spectrum of the clock signal from the previous frame; The clock signal of the current frame is spread using the first spread spectrum signal after reset, so that the start time of the spread spectrum clock signal of the current frame is synchronized with the start time of the spread spectrum clock signal of the previous frame.

4. The frequency spread spectrum method for eliminating water ripples as described in claim 1, characterized in that, The frequency spreading method for eliminating water ripples also includes: Acquire a second spread spectrum signal, wherein the waveform of the first spread spectrum signal is opposite to the waveform of the second spread spectrum signal; The clock signals of different frames are alternately spread-spectrum processed by the first spread-spectrum signal and the second spread-spectrum signal after reset, and then output to the gate chip.

5. The frequency spread method for eliminating water ripples as described in claim 1, characterized in that, The frequency spreading method for eliminating water ripples also includes: The first spread spectrum signal is reset at the end of the previous alternation period, with a preset number of rows as the alternation period; The clock signal in the current alternation cycle is spread-spectrum processed according to the first spread-spectrum signal after reset and then output to the gate chip.

6. A display panel, characterized in that, The display panel includes a timing control circuit, a gate chip, a source chip, and a driving array composed of multiple pixel driving circuits. The timing control circuit is electrically connected to the gate chip and the source chip respectively, and the gate chip and the source chip are electrically connected to the driving array respectively; The timing control circuit is used to output clock signals to the gate chip and the source chip respectively, so that the gate chip and the source chip jointly charge the pixel driving circuit corresponding to each row according to the clock signal; The timing control circuit is further configured to obtain a first spread spectrum signal for spreading the clock signal of the previous frame based on the signal waveform of the first spread spectrum signal output in the previous frame; and the timing control circuit is further configured to reset the first spread spectrum signal, and to spread the clock signal of the current frame based on the reset first spread spectrum signal and output it to the gate chip, so that the gate chip controls the charging time of the same row of pixel driving circuits in different frames to be the same. The timing control circuit is further configured to acquire the first position in the period of the first spread spectrum signal that matches the initial time of the previous frame; and to control the position in the period of the first spread spectrum signal that matches the initial time of the current frame to be the same as the first position.

7. The display panel as described in claim 6, characterized in that, The timing control circuit is further configured to obtain a second spread spectrum signal based on the waveform of the first spread spectrum signal after reset, wherein the waveform of the first spread spectrum signal is opposite to the waveform of the second spread spectrum signal; and the timing control circuit is further configured to alternately perform spread spectrum processing on the clock signals of different frames based on the first spread spectrum signal after reset and the second spread spectrum signal after reset, and then output them to the gate chip.

8. The display panel as described in claim 7, characterized in that, The timing control circuit is further configured to reset the first spread spectrum signal at the end of the previous alternation period with a preset number of rows as the alternation period; and to perform spread spectrum processing on the clock signal in the current alternation period based on the reset first spread spectrum signal and output it to the gate chip.

9. A storage medium, characterized in that, This includes the frequency spread method for eliminating water ripples as described in any one of claims 1-5.

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