Display driving system and display panel

Abstract

The present disclosure relates to a display driving system and a display panel, wherein the display driving system includes a plurality of cascaded driving circuits; each of the driving circuits is used to determine the input port of display data and the output port of display data according to the level of the input of each port; the display data is received and decoded through the input port of the display data, and a first group of image data in the display data is stored, and a pixel unit corresponding to the driving circuit is driven according to the stored image data; the display data is adjusted, and the reconstructed display data is forwarded to the next level driving circuit through the output port of the display data. The display driving system provided by the present disclosure can improve the reliability of the display driving system.

Description

Technical Field

[0001] The present disclosure relates to the field of display devices, and in particular to a display driving system and a display panel. Background Art

[0002] At present, the driving integrated circuit inside the display device usually includes a plurality of cascaded LED driving circuits, and the display device drives the plurality of cascaded LED driving circuits through display data to achieve the purpose of driving and controlling the display state of each LED pixel unit in the display device according to the display data.

[0003] However, due to factors such as the inconsistency of the process of driver integrated circuits and changes in the application environment, the pulse width of the display data will gradually be distorted during the transmission process, so that when there are many cascaded LED driver circuits in the driver integrated circuit, the pulse of the display data cannot represent the data information it carries, resulting in data transmission being limited by the number of cascaded LED driver circuits and unable to achieve unlimited cascading. In addition, since the multiple cascaded LED driver circuits in the existing driver integrated circuit can only transmit data in a single direction, when one LED driver circuit is damaged, the LED driver circuit behind the damaged LED driver circuit cannot receive the display data, resulting in reduced reliability of the driver integrated circuit.

[0004] Therefore, how to ensure that the pulse width of the display data remains unchanged while ensuring that the driver integrated circuit can work normally and how to ensure the reliability of the driver integrated circuit become technical problems that need to be solved urgently. Summary of the invention

[0005] In view of this, the present disclosure proposes a display driving system and a display panel.

[0006] According to one aspect of the present disclosure, a display driving system is provided, the display driving system comprising a plurality of cascaded driving circuits; each of the driving circuits is used to determine an input port for display data and an output port for display data according to the level of an input at each port thereof; receive display data through the input port for display data, and store a first group of image data in the display data; drive a pixel unit corresponding to the driving circuit according to the stored image data; adjust the display data, and forward the reconstructed display data to the next level driving circuit through the output port for display data.

[0007] In a possible implementation, the display data includes control data and multiple groups of image data, and the reconstructed display data includes the control signal and other groups of image data in the input display data that are not stored by the driving circuit.

[0008] In a possible implementation, the driving circuit further includes an input detector; the input detector generates a port control signal according to the input level of each port of the driving circuit, and the driving circuit determines an input port for display data and an output port for display data according to the port control signal.

[0009] In a possible implementation, the port control signal includes a first control signal or a second control signal; when the port control signal includes the first control signal, the drive circuit inputs the display data from a first direction and outputs reconstructed display data from a second direction; when the port control signal includes the second control signal, the drive circuit inputs the display data from a second direction and outputs reconstructed display data from the first direction.

[0010] In a possible implementation, when the drive circuit inputs the display data in a first direction and outputs the display data in a second direction, the drive circuit receives the display data forwarded by the previous drive circuit and forwards the reconstructed display data to the next drive circuit; when the drive circuit inputs the display data in the second direction and outputs the reconstructed display data in the first direction, the drive circuit receives the display data forwarded by the next drive circuit and forwards the reconstructed display data to the previous drive circuit.

[0011] In a possible implementation, the port control signal includes a third control signal or a fourth control signal; when the port control signal includes the third control signal, the driver circuit receives display data forwarded by the previous-stage driver circuit, and forwards the reconstructed display data to the next-stage and subsequent second-stage driver circuits, or receives display data forwarded by the next-stage driver circuit, and forwards the reconstructed display data to the previous-stage and previous second-stage driver circuits; when the port control signal includes the fourth control signal, the driver circuit receives display data forwarded by the previous-stage driver circuit, and forwards the reconstructed display data to the next-stage and subsequent second-stage driver circuits, or receives display data forwarded by the subsequent second-stage driver circuit, and forwards the reconstructed display data to the previous-stage and previous second-stage driver circuits; wherein the previous-stage driver circuit is a driver circuit separated from the driver circuit by the previous-stage driver circuit, and the subsequent second-stage driver circuit is a driver circuit separated from the driver circuit by the next-stage driver circuit.

[0012] In a possible implementation manner, each of the driving circuits includes a first port, a second port, a third port and a fourth port; the second port of each driving circuit is electrically connected to the first port of the next-stage driving circuit, and the fourth port of each driving circuit is electrically connected to the third port of the next-stage driving circuit; when the port control signal includes the first control signal and the third control signal, the driving circuit receives display data forwarded by the second port of the previous-stage driving circuit through the first port, forwards the reconstructed display data to the first port of the next-stage driving circuit through the second port, and forwards the reconstructed display data to the third port of the next-stage driving circuit through the fourth port; when the port control signal includes the first control signal and the fourth control signal, the driving circuit receives display data forwarded by the fourth port of the previous-stage driving circuit through the third port, forwards the reconstructed display data to the first port of the next-stage driving circuit through the second port The display data is forwarded to the first port of the next-stage driving circuit, and the reconstructed display data is forwarded to the third port of the next-stage driving circuit through the fourth port; when the port control signal includes the second control signal and the third control signal, the driving circuit receives the display data forwarded by the first port of the next-stage driving circuit through the second port, forwards the reconstructed display data to the second port of the previous-stage driving circuit through the first port, and forwards the reconstructed display data to the fourth port of the previous-stage driving circuit through the third port; when the port control signal includes the second control signal and the fourth control signal, the driving circuit receives the display data forwarded by the third port of the next-stage driving circuit through the fourth port, forwards the reconstructed display data to the second port of the previous-stage driving circuit through the first port, and forwards the reconstructed display data to the fourth port of the previous-stage driving circuit through the third port; wherein the first port, the second port, the third port and the fourth port are all three-state input and output ports; when there is no next-stage or next-stage driving circuit in the driving circuit, the output data is sent to the data sending circuit, and the data sending circuit is used to send display data to the display driving system.

[0013] In a possible implementation, the display driving system is applied to a display system to drive at least one pixel unit in the display system.

[0014] According to another aspect of the present disclosure, a display panel is further provided, comprising a display driving system as described in any one of the above.

[0015] The display drive system and display panel provided by the present disclosure regenerate the data before each drive circuit forwards the display data, thereby reducing the attenuation of the data signal and achieving long-distance transmission. At the same time, the drive circuit in the display drive system provided by the present disclosure can determine the port for receiving display data and the port for outputting display data according to the level of the input of each port, so the display drive system provided by the present disclosure can also achieve the purpose of receiving display data in both directions, and thus can prevent the occurrence of the problem that a single drive circuit in the display drive system is damaged and the drive circuits connected in series with it cannot work, thereby improving the reliability of the display drive system.

[0016] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0018] Figure 1 A schematic diagram of a circuit structure of a display driving system provided by the present invention.

[0019] Figure 2 A schematic diagram showing the data transmission process.

[0020] Figure 3 A coding diagram of display data provided by an embodiment of the present disclosure.

[0021] Figure 4 A schematic diagram of the circuit structure of a driving circuit provided in an embodiment of the present disclosure.

[0022] Figure 5 A schematic diagram of the circuit structure of another display driving system provided by the present invention.

[0023] Figure 6 for Figure 5 A schematic diagram of a display data transmission process when a second drive circuit in a circuit of a display drive system fails is provided. DETAILED DESCRIPTION

[0024] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0025] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0026] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0027] See also Figure 1-Figure 6 As shown, the present disclosure provides a display driving system, which includes a plurality of cascaded driving circuits 12 .

[0028] See also Figure 1-Figure 3 As shown, each driving circuit 12 is used to determine the input port of display data and the output port of display data according to the level of each port input. Display data is received through the input port of display data, and the first set of image data in the display data is stored. The pixel unit corresponding to the driving circuit is driven according to the stored image data. The display data is adjusted, and the reconstructed display data is forwarded to the next level driving circuit through the output port of display data.

[0029] See also Figure 1 As shown, multiple cascaded driving circuits 12 can be electrically connected to the data sending circuit 11. The data sending circuit 11 is electrically connected to the head end and the tail end of the multiple cascaded driving circuits 12 through the P1 port, and the first port Di of each level of driving circuit 12 except the first-level driving circuit is electrically connected to the second port Do of the previous level driving circuit. The first-level driving circuit receives the display data sent by the data sending circuit P1 port through the first port Di, and each level of driving circuit 12 except the first-level driving circuit can receive the display data forwarded by the second port Do of the previous level driving circuit through the first port Di.

[0030] Exemplarily, when the data sending circuit 11 sends the display data to the first port Di of the first-level driving circuit through the P1 port, the first-level driving circuit determines that the input level of the first port Di is a high level. At this time, the first-level driving circuit determines that the first port Di is the input port of the display data, and receives the display data output by the data sending circuit 11 through the first port Di. The first-level driving circuit stores the first group of image data in the display data, and the image data is used to drive the LED pixel unit corresponding to the driving circuit. The first-level driving circuit reconstructs the display data through the local clock inside the driving circuit, and forwards the reconstructed display data to the next-level driving circuit. Among them, the display data includes control data and multiple groups of image data, and the reconstructed display data includes control signals and other groups of image data that have not been stored. The working principles of other driving circuits are the same as the working principles of the first-level driving circuit, so they are not repeated here.

[0031] Exemplarily, when the first-stage driving circuit determines that the input level of the second port Do is low, the first-stage driving circuit determines the second port Do as the output port of display data, and outputs the reconstructed display data to the next-stage driving circuit through the second port Do.

[0032] It is worth noting that the first-stage driving circuit is electrically connected to the P1 port of the data transmission circuit 11 through the first port Di, and is electrically connected to the first port Di of the next-stage driving circuit through the second port Do. The final-stage driving circuit is electrically connected to the second port Do of the previous-stage driving circuit through the first port Di, and is electrically connected to the data transmission circuit 11 through the second port Do.

[0033] The display drive system and display panel provided by the present disclosure regenerate the data before each drive circuit forwards the display data, thereby reducing the attenuation of the data signal and achieving long-distance transmission. At the same time, the drive circuit in the display drive system provided by the present disclosure can determine the port for receiving display data and the port for outputting display data according to the level of the input of each port, so the display drive system provided by the present disclosure can also achieve the purpose of receiving display data in both directions, and thus can prevent the occurrence of the problem that a single drive circuit in the display drive system is damaged and the drive circuits connected in series with it cannot work, thereby improving the reliability of the display drive system.

[0034] See also Figure 4 as well as Figure 5 As shown, in a possible implementation, the driving circuit 12 further includes an input detector 126. The input detector 126 generates a port control signal according to the input level of each port of the driving circuit 12. The driving circuit 12 determines the input port of the display data and the output port of the display data according to the port control signal.

[0035] Exemplarily, the first port Di, the second port Do, the third port FA and the fourth port FB respectively include signal input ports (i.e. Di_i, Do_i, FA_i and FB_i) and signal output ports (i.e. Di_o, Do_o, FA_o and FB_o). The input detector 126 outputs a port control signal according to the input level of the signal input ports (i.e. Di_i, Do_i, FA_i and FB_i) of the first port Di, the second port Do, the third port FA and the fourth port FB, and inputs the port control signal into the input selector 125. The input selector 125 determines the display data input port and the display data output port of the circuit according to the port control signal. Among them, the first port Di, the second port Do, the third port FA and the fourth port FB are all three-state input and output ports.

[0036] Exemplarily, when the input level of a certain port of the driving circuit 12 is at a high level, the port control signal generated by the input detector 126 of the driving circuit 12 indicates that the driving circuit 12 sets the port as the input port of the display data. For example: when the input level of the first port Di or the third port FA is at a high level, the input detector 126 generates a first control signal. When the input level of the second port Do or the fourth port FB is at a high level, the input detector 126 generates a second control signal. When the input level of the first port Di is at a high level, or the input level of the second port Do is at a high level, the input detector 126 generates a third control signal. When the input level of the first port Di and the second port Do is at a low level, and the input level of the third port FA or the fourth port FB is at a high level, the input detector 126 generates a fourth control signal. Thus, when the input level of the first port Di is at a high level, the input detector 126 generates the first control signal and the third control signal, and at this time, the driving circuit 12 receives the display data forwarded by the upper-level driving circuit through the first port Di. When the input level of the second port Do is high, the input detector 126 generates a second control signal and a third control signal, and the drive circuit 12 receives the display data forwarded by the next-stage drive circuit through the second port Do. When the input levels of the first port Di and the second port Do are low, and the input level of the third port FA is high, the input detector 126 generates a first control signal and a fourth control signal, and the drive circuit 12 receives the display data forwarded by the second-stage drive circuit through the third port FA. When the input levels of the first port Di and the second port Do are low, and the input level of the fourth port FB is high, the input detector 126 generates a second control signal and a fourth control signal, and the drive circuit 12 receives the display data forwarded by the second-stage drive circuit through the fourth port FB.

[0037] In a possible implementation, the port control signal generated by the input detector 126 may include a first control signal or a second control signal. When the port control signal includes the first control signal, the drive circuit 12 inputs display data from the first direction and outputs reconstructed display data from the second direction. When the port control signal includes the second control signal, the drive circuit 12 inputs display data from the second direction and outputs reconstructed display data from the first direction.

[0038] Exemplarily, when the drive circuit 12 inputs display data from the first direction and outputs reconstructed display data from the second direction, the drive circuit 12 receives display data forwarded by the previous drive circuit and forwards the reconstructed display data to the next drive circuit. When the drive circuit 12 inputs display data from the second direction and outputs reconstructed display data from the first direction, the drive circuit 12 receives display data forwarded by the next drive circuit and forwards the reconstructed display data to the previous drive circuit.

[0039] It is equivalent to that the data sending circuit 11 can send display data to the head and tail ends of multiple cascaded driving circuits 12 at the same time, and each driving circuit 12 can receive display data from different data transmission directions according to the port control signal generated by the input detector 126, and store the image data corresponding to it in the display data into the data storage 123. When driving the LED pixel unit, the LED pixel unit is driven only according to the stored image data. In the case where the port control signal generated by the input detector 126 includes the first control signal, the driving circuit 12 receives the display data forwarded by the second port Do of the previous driving circuit through the first port Di, and forwards the reconstructed display data to the first port Di of the next driving circuit through the second port Do. In the case where the port control signal generated by the input detector 126 includes the second control signal, the driving circuit receives the display data forwarded by the first port Di of the next driving circuit through the second port Do, and forwards the reconstructed display data to the second port Do of the previous driving circuit through the first port Di. Among them, the first port Di and the second port Do of the driving circuit 12 are three-state input and output ports.

[0040] In the display driving system provided by the present disclosure, when there is a faulty driving circuit inside the system, although the next-level driving circuit 12 of the faulty circuit cannot obtain display data from the first port Di, it can still receive the display data forwarded by the first port Di of the next-level driving circuit 12 through the second port Do, thereby avoiding the occurrence of a full-screen display situation affected by damage to a driving circuit in the display driving system.

[0041] In one possible implementation, see Figure 4as well as Figure 5 As shown, the port control signal generated by the input detector 126 includes the third control signal or the fourth control signal.

[0042] Further, when the port control signal includes a third control signal, the driving circuit 12 receives display data forwarded by the previous-level driving circuit, and forwards the reconstructed display data to the next-level and second-level driving circuits, or receives display data forwarded by the next-level driving circuit, and forwards the reconstructed display data to the previous-level and second-level driving circuits.

[0043] Further, when the port control signal includes a fourth control signal, the driving circuit 12 receives display data forwarded by the previous second-stage driving circuit, and forwards the reconstructed display data to the next-stage and subsequent second-stage driving circuits, or receives display data forwarded by the subsequent second-stage driving circuit, and forwards the reconstructed display data to the previous stage and the previous second-stage driving circuit.

[0044] This means that, except for the first-stage driving circuit, each stage of driving circuit is electrically connected to its previous stage of driving circuit and the second-stage driving circuit before it.

[0045] Exemplarily, when the data sending circuit 11 sends display data to the first port Di of the first-level driving circuit through the P1 port, and sends the display data to the third port FA of the next-level driving circuit of the first-level driving circuit through the P1D port, the first port Di of the driving circuit 12 is used to receive the display data forwarded by the previous-level driving circuit, the second port Do of the driving circuit is used to forward the display data, the third port FA of the driving circuit 12 is used to receive the display data forwarded by the previous second-level driving circuit, and the fourth port FB of the driving circuit 12 is used to forward the display data to the third port FA of the next second-level driving circuit.

[0046] Exemplarily, when the data sending circuit 11 sends the display data to the second port Do of the final driving circuit through the N1 port, and sends the display data to the fourth port FB of the previous driving circuit of the final driving circuit through the N1D port. The second port Do of the driving circuit 12 is used to receive the display data forwarded by the next driving circuit, the first port Di of the driving circuit 12 is used to forward the display data, the third port FA of the driving circuit 12 is used to forward the display data to the fourth port FB of the previous second driving circuit, and the fourth port FB of the driving circuit 12 is used to receive the display data forwarded by the next second driving circuit.

[0047] Exemplarily, the front second-stage driving circuit is a driving circuit that is separated from the driving circuit by a previous stage, and the rear second-stage driving circuit is a driving circuit that is separated from the driving circuit by a next stage. Figure 5The middle driving circuit 91 is a front second stage driving circuit of the third driving circuit 93 , and the third driving circuit 93 is a rear second stage driving circuit of the driving circuit 91 .

[0048] Optionally, in the case where there is no faulty driving circuit in the multiple cascaded driving circuits 12, the driving circuit obtains the display data forwarded by the second port Do of the driving circuit at the previous stage through the first port Di.

[0049] Optionally, when there is a faulty driving circuit among the multiple cascaded driving circuits 12, the next-stage driving circuit of the faulty driving circuit obtains display data forwarded by the fourth port FB of the previous-stage driving circuit of the faulty driving circuit through the third port FA. Optionally, the next-stage driving circuit of the faulty driving circuit may also obtain display data forwarded by the fourth port FA of the previous-stage driving circuit of the faulty driving circuit through the fourth port FB.

[0050] See also Figure 5 as well as Figure 6 As shown, when the second driving circuit 92 is a faulty circuit, the third driving circuit 93 obtains the display data forwarded by the first driving circuit 91 through the third port FA, stores the image data in the first group of the display data, and reconstructs the display data. The reconstructed display data includes the control data and the remaining image data. The third driving circuit 93 forwards the reconstructed display data to the fourth driving circuit 94.

[0051] Further, such as Figure 5 As shown in FIG. 1 , the second port Do and the fourth port FB of the second driving circuit 92 cannot output the display data s3 and p3 due to circuit failure.

[0052] The driving circuit in the display driving system provided by the present invention can not only obtain the display data forwarded by the previous-stage driving circuit but also obtain the display data forwarded by the previous-stage driving circuit, which is equivalent to the driving circuit being able to obtain the display data received and forwarded by the previous-stage driving circuit, thereby realizing breakpoint transmission and preventing the problem in the display driving system that the driving circuits connected in series with the single driving circuit cannot work due to damage thereto.

[0053] See also Figure 5 As shown, in a possible implementation manner, each of the driving circuits includes a first port Di, a second port Do, a third port FA and a fourth port FB.

[0054] Furthermore, the second port Do of each driving circuit is electrically connected to the first port Di of the next-stage driving circuit, and the fourth port FB of each driving circuit is electrically connected to the third port FA of the next-stage driving circuit.

[0055] Exemplarily, when the port control signal includes a first control signal and a third control signal, the driving circuit 12 receives display data forwarded by the second port Do of the previous-level driving circuit through the first port Di, forwards the reconstructed display data to the first port Di of the next-level driving circuit through the second port Do, and forwards the reconstructed display data to the third port FA of the next-level driving circuit through the fourth port FB.

[0056] Exemplarily, when the port control signal includes a first control signal and a fourth control signal, the driving circuit 12 receives display data forwarded by the fourth port FB of the front second-stage driving circuit through the third port FA, forwards the reconstructed display data to the first port Di of the next-stage driving circuit through the second port Do, and forwards the reconstructed display data to the third port FA of the rear second-stage driving circuit through the fourth port FB.

[0057] Exemplarily, when the port control signal includes a second control signal and a third control signal, the driving circuit receives display data forwarded by the first port Di of the next-level driving circuit through the second port Do, forwards the reconstructed display data to the second port Do of the previous-level driving circuit through the first port Di, and forwards the reconstructed display data to the fourth port FB of the previous second-level driving circuit through the third port FA.

[0058] Exemplarily, when the port control signal includes the second control signal and the fourth control signal, the driving circuit receives the display data forwarded by the third port FA of the rear second-stage driving circuit through the fourth port FB, forwards the reconstructed display data to the second port Do of the previous-stage driving circuit through the first port Di, and forwards the reconstructed display data to the fourth port FB of the front second-stage driving circuit through the third port FA.

[0059] Exemplarily, the front second-stage driving circuit of the driving circuit is a driving circuit that is one stage ahead of the driving circuit, and the rear second-stage driving circuit of the driving circuit is a driving circuit that is one stage ahead of the driving circuit.

[0060] Exemplarily, when the driving circuit does not have a next-stage or second-stage driving circuit, the output data is sent to a data sending circuit, and the data sending circuit is used to send display data to the display driving system.

[0061] In one possible implementation, see Figure 4 As shown, the driving circuit 12 may further include: a data oscillator 121 , a data decoder 122 , a data memory 123 and a data regenerator 124 .

[0062] Exemplarily, the data decoder 122 decodes the display data according to the pulse signal output by the data oscillator 121, and outputs the decoded display data, wherein the decoded display data is binary data.

[0063] For example, see Figure 3 As shown, the display data is encoded using a unipolar return-to-zero code. The minimum period in the display data is T s The duration of the high level bit of data "0" is T 0 H, low level bit duration is T 0 L, the high level bit duration of data "1" is T 1 H, low level bit duration is T 1 L.

[0064] For example, T s The value of can be 550ns. The duration of the high level bit of data "0" is T 0 The value range of H is greater than 60ns and less than 220ns, T 0 The value of H can be selected as 110ns, and the low level bit duration T 0 The value range of L is greater than 330ns, T 0 The value of L can be selected as 440ns. The high level bit duration of data "1" is T 1 The value range of H is greater than 220ns, T 1 The value of H can be selected as 330ns, and the low level duration T 1 The value range of L is greater than 110ns, T 1 The value of L can be selected as 220ns.

[0065] Exemplarily, the data memory 123 stores the first set of image data in the decoding result, the data regenerator 124 obtains the control data not stored in the data memory 123 and at least one set of image data to reconstruct the display data, and forwards the reconstructed display data to the next level driving circuit 12 through the port of the driving circuit 12.

[0066] Exemplarily, the driving circuit 12 further includes: a PWM generator, wherein the PWM generator outputs a PWM signal according to the decoding result of the first set of image data, and the PWM signal is used to drive the corresponding LED pixel unit to display the stored first set of image data.

[0067] The display driving system provided by the present disclosure regenerates the data before each driving circuit forwards the display data, thereby reducing the attenuation of the data signal and achieving long-distance transmission. At the same time, the data can be quickly regenerated using the local clock, reducing the time required for the data regeneration process, and the time required for long-distance transmission is reduced, which can achieve longer-distance transmission. In addition, the display device provided by the present disclosure reduces the probability of the first group of image data being interfered by noise and burrs by adding control data before the first group of image data in the display data, and the driving circuit in the display driving system can start from the first group of data of the decoding result of the control data, preset the continuous number of data, determine the current working mode of the driving circuit, and achieve the purpose of switching the working mode of the driving circuit.

[0068] In some embodiments of the present disclosure, the present disclosure further provides a display panel, which includes the display driving system described above.

[0069] Exemplarily, the display panel provided by the present disclosure is a display panel selected from the group consisting of a liquid crystal display panel, a micro light emitting diode display panel, a mini light emitting diode display panel, a quantum dot light emitting diode display panel, and an organic light emitting diode display panel.

[0070] The display panel provided by the present disclosure reduces the probability of the first set of image data being interfered by noise and burrs by adding control data before the first set of image data in the display data. In addition, developers can divide different working modes by setting different preset value ranges to achieve the purpose of flexibly adjusting the switching of the driving circuit working mode.

[0071] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A display driving system, characterized in that: The display driving system comprises a plurality of cascaded driving circuits; Each of the driving circuits is used to determine the input port of display data and the output port of display data according to the level of input of each port thereof; receive display data through the input port of display data and store the first group of image data in the display data; drive the pixel unit corresponding to the driving circuit according to the stored image data; adjust the display data, and forward the reconstructed display data to the next level driving circuit through the output port of display data; the display data includes control data and multiple groups of image data, and the reconstructed display data includes control data and other groups of image data in the input display data that are not stored by the driving circuit; Wherein, each of the driving circuits includes a first port and a second port; the first-stage driving circuit in the multiple cascaded driving circuits is connected to the data sending circuit via its first port; the final-stage driving circuit in the multiple cascaded driving circuits is connected to the data sending circuit via its second port; the data sending circuit is used to send the display data to the first port of the first-stage driving circuit, or to send the display data to the second port of the final-stage driving circuit.

2. The display driving system according to claim 1, characterized in that: The driving circuit also includes an input detector; The input detector generates a port control signal according to the input level of each port of the driving circuit, and the driving circuit determines the input port of display data and the output port of display data according to the port control signal.

3. The display driving system according to claim 2, characterized in that: The port control signal includes a first control signal or a second control signal; In the case where the port control signal includes the first control signal, the driving circuit inputs the display data from a first direction and outputs the reconstructed display data from a second direction; In a case where the port control signal includes the second control signal, the driving circuit inputs the display data from the second direction and outputs the reconstructed display data from the first direction.

4. The display driving system according to claim 3, characterized in that: In the case where the drive circuit inputs the display data in a first direction and outputs the display data in a second direction, the drive circuit receives the display data forwarded by the previous drive circuit and forwards the reconstructed display data to the next drive circuit; When the driving circuit inputs the display data from the second direction and outputs the reconstructed display data from the first direction, the driving circuit receives the display data forwarded by the next-stage driving circuit and forwards the reconstructed display data to the previous-stage driving circuit.

5. The display driving system according to claim 4, characterized in that: The port control signal includes a third control signal or a fourth control signal; In the case where the port control signal includes the third control signal, the driving circuit receives the display data forwarded by the previous driving circuit, and forwards the reconstructed display data to the next and second-stage driving circuits, or receives the display data forwarded by the next driving circuit, and forwards the reconstructed display data to the previous and second-stage driving circuits; In the case where the port control signal includes the fourth control signal, the driving circuit receives the display data forwarded by the previous second-stage driving circuit, and forwards the reconstructed display data to the next-stage and the next-stage driving circuits, or receives the display data forwarded by the next-stage driving circuit, and forwards the reconstructed display data to the previous-stage and the previous second-stage driving circuits; The front second-stage driving circuit is a driving circuit that is separated from the driving circuit by the previous stage driving circuit, and the rear second-stage driving circuit is a driving circuit that is separated from the driving circuit by the next stage driving circuit.

6. The display driving system according to claim 5, characterized in that: Each of the driving circuits comprises a third port and a fourth port; The second port of each driving circuit is electrically connected to the first port of the next-stage driving circuit, and the fourth port of each driving circuit is electrically connected to the third port of the next-stage driving circuit; In the case where the port control signal includes the first control signal and the third control signal, the driving circuit receives the display data forwarded by the second port of the previous stage driving circuit through the first port, forwards the reconstructed display data to the first port of the next stage driving circuit through the second port, and forwards the reconstructed display data to the third port of the next second stage driving circuit through the fourth port; In the case where the port control signal includes the first control signal and the fourth control signal, the driving circuit receives the display data forwarded by the fourth port of the previous second-stage driving circuit through the third port, forwards the reconstructed display data to the first port of the next-stage driving circuit through the second port, and forwards the reconstructed display data to the third port of the next-stage driving circuit through the fourth port; In the case where the port control signal includes the second control signal and the third control signal, the driving circuit receives the display data forwarded by the first port of the next-stage driving circuit through the second port, forwards the reconstructed display data to the second port of the previous-stage driving circuit through the first port, and forwards the reconstructed display data to the fourth port of the previous second-stage driving circuit through the third port; In the case where the port control signal includes the second control signal and the fourth control signal, the driving circuit receives the display data forwarded by the third port of the rear second-stage driving circuit through the fourth port, forwards the reconstructed display data to the second port of the previous stage driving circuit through the first port, and forwards the reconstructed display data to the fourth port of the front second-stage driving circuit through the third port; Wherein, the first port, the second port, the third port and the fourth port are all three-state input and output ports; In the case that the driving circuit does not have a next-stage or a second-stage driving circuit, the output data is sent to a data sending circuit, and the data sending circuit is used to send display data to the display driving system.

7. The display driving system according to any one of claims 1 to 6, characterized in that: The display driving system is applied in a display system to drive at least one pixel unit in the display system.

8. A display panel, characterized in that: The display panel comprises a display driving system as described in any one of claims 1-7.

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