Power supply circuit of display panel and display panel

Abstract

The invention belongs to the technical field of circuit control, and relates to a power supply circuit of a display panel and the display panel. The power supply circuit of the display panel comprises a power supply control module and a synchronous control module, the power supply control module comprises a plurality of power supply input ends and a plurality of power supply output ends, the plurality of power supply input ends are respectively coupled with a plurality of power supply voltages, and the plurality of power supply output ends are respectively connected with different control areas. Each power input end corresponds to one power output end and is used for supplying power to the control area through the power voltage coupled to the power input end and the corresponding power output end. And the synchronous control module is connected with the power supply control module and is used for sending a synchronous control signal to the power supply control module so as to control the power supply control module to synchronously conduct connection paths between the plurality of power supply input ends and the plurality of power supply output ends, so that the plurality of power supply voltages are synchronously output to the plurality of control areas through the plurality of power supply output ends. According to the technical scheme, synchronous power supply to different control areas can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of circuit control, and particularly to a power supply circuit for a display panel and a display panel. Background Art

[0002] With the continuous improvement of the resolution and size of display devices (such as liquid crystal display panels), the load of display devices is increasing. A single power supply voltage can no longer meet the driving requirements of display devices, and multiple power supply voltages are required for power supply. The display device is divided into different control regions, and each power supply voltage drives one control region in the display device respectively.

[0003] However, in the prior art, the power supply voltage is directly connected to the control region for power supply. Different power supply voltages cannot be output to different control regions simultaneously. The control region driven by the power supply voltage output first starts first, and the control region driven by the power supply voltage output later starts later. The startup times of each control region are different, resulting in partition flickering of the display device when it is powered on, which affects the visual effect. Summary of the Invention

[0004] An embodiment of the present application provides a power supply circuit for a display panel and a display panel, which can supply power to different control regions in the display panel synchronously and improve the visual effect of the display panel.

[0005] On the one hand, an embodiment of the present application provides a power supply circuit for a display panel. The display panel includes a plurality of control regions, including:

[0006] A power supply control module, including a plurality of power input terminals and a plurality of power output terminals. The plurality of power input terminals are respectively coupled to a plurality of power supply voltages, and the plurality of power output terminals are respectively connected to different control regions. Each power input terminal corresponds to one power output terminal, and is used to supply power to the control region through the corresponding power output terminal for the power supply voltage coupled to the power input terminal;

[0007] A synchronization control module, connected to the power supply control module, and is used to send a synchronization control signal to the power supply control module to control the power supply control module to synchronously turn on the connection paths between the plurality of power input terminals and the plurality of power output terminals, so as to synchronously output the plurality of power supply voltages to the plurality of control regions through the plurality of power output terminals.

[0008] In some embodiments, the synchronization control module includes a delay control circuit, which is configured to send the synchronization control signal to the power supply control module after a target delay based on the input control voltage.

[0009] In some embodiments, the delay control circuit includes a first resistor and a first capacitor; one end of the first resistor is coupled to the control voltage, and the other end is respectively connected to the first capacitor and the power supply control module.

[0010] In some embodiments, the first capacitor is configured to use the control voltage as the synchronization control signal and output it to the power supply control module after accessing the control voltage and after a target delay.

[0011] In some embodiments, the power supply circuit of the display panel further includes a plurality of power chips corresponding to a plurality of the control regions respectively. Each power chip is configured to output the power supply voltage to one of the power input terminals and output the control voltage to the synchronization control module.

[0012] In some embodiments, the synchronization control module includes a delay control chip, which is configured to output a low level and, after detecting the access of the control voltage, convert from outputting a low level to outputting a high level after a target time delay.

[0013] In some embodiments, the synchronization control module further includes a second resistor; one end of the second resistor is coupled to the control voltage, and the other end is respectively connected to the delay control chip and the power supply control module.

[0014] In some embodiments, the power supply control module further includes a plurality of switching elements. Each switching element is connected between one of the power input terminals and one of the power output terminals and is configured to conduct under the control of the synchronization control signal.

[0015] In some embodiments, the switching element includes a first electrode connected to one of the power input terminals, a second electrode connected to one of the power output terminals, and a control electrode connected to the synchronization control module. When the switching element receives the synchronization control signal, it conducts the connection path between the first electrode and the second electrode.

[0016] On the other hand, the present application provides a display panel, which includes the power supply circuit of the display panel according to any one of the above embodiments.

[0017] The present application can achieve the following technical effects: Based on the power supply circuit of the display panel provided by the embodiments of the present application, the power supply voltage, the power input terminal, the power output terminal, and the control region are connected. Based on the synchronization control signal, the connection paths between a plurality of power input terminals and a plurality of power output terminals are synchronously conducted, so as to supply power to a plurality of control regions synchronously using a plurality of power supply voltages, and eliminate the partition flicker phenomenon of the plurality of control regions during asynchronous power supply. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0019] To more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the accompanying drawings, where the same reference numerals in the following description represent the same parts.

[0020] Figure 1 It is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure;

[0021] Figure 2 It is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure;

[0022] Figure 3 It is a schematic structural diagram of a delay control circuit provided in an exemplary embodiment of the present disclosure;

[0023] Figure 4 It is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure;

[0024] Figure 5 It is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure;

[0025] Figure 6 It is a schematic structural diagram of a synchronization control module provided in an exemplary embodiment of the present disclosure;

[0026] Figure 7 It is a schematic structural diagram of a power supply control module provided in an exemplary embodiment of the present disclosure;

[0027] Figure 8 It is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure;

[0028] Figure 9 It is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure;

[0029] Figure 10 It is a power supply circuit in the prior art;

[0030] Figure 11 It is Figure 10 The corresponding power supply voltage waveform diagram;

[0031] Figure 12 It is Figure 8Corresponding power supply voltage and control voltage waveform diagram.

[0032] Description of reference numerals:

[0033] 1 - Power supply control module; 11 - Power input terminal; 12 - Power output terminal; 13 - Switching element; 131 - First electrode; 132 - Second electrode; 133 - Control electrode;

[0034] 2 - Synchronous control module; 21 - Delay control circuit; R1 - First resistor; C1 - First capacitor; 22 - Delay control chip; R2 - Second resistor;

[0035] 3 - Power chip; 4 - Display panel; 41 - Control area; VCC1 - First power supply voltage; VCC2 - Second power supply voltage; VCC3 - Third power supply voltage; VCC4 - Fourth power supply voltage; VDD - Control voltage; Q1 - First NMOS transistor; Q2 - Second NMOS transistor; Q3 - Third NMOS transistor; Q4 - Fourth NMOS transistor; GND - Ground terminal. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0037] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after without special explanation.

[0038] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0039] The present application provides a power supply circuit and a display panel for a display panel, which can supply power to multiple control regions in the display panel synchronously, avoiding the phenomenon of partition flicker of multiple control regions caused by asynchronous power supply.

[0040] The following will introduce a power supply circuit and a display panel for a display panel provided by the present application with reference to the accompanying drawings.

[0041] Please refer to Figure 1 as shown in Figure 1 FIG. 13 is a schematic structural diagram of a power supply circuit for a display panel provided in an exemplary embodiment of the present disclosure. The display panel 4 includes a plurality of control regions 41. The power supply circuit of the display panel includes a power supply control module 1 and a synchronization control module 2. The power supply control module 1 includes a plurality of power input terminals 11 and a plurality of power output terminals 12. The plurality of power input terminals 11 are respectively coupled to a plurality of power voltages, and the plurality of power output terminals 12 are respectively connected to different control regions 41. Each power input terminal 11 corresponds to one power output terminal 12, and is used to supply power to the control region 41 through the corresponding power output terminal 12 by using the power voltage coupled to the power input terminal 11. The synchronization control module 2 is connected to the power supply control module 1, and is used to send a synchronization control signal to the power supply control module 1 to control the power supply control module 1 to synchronously conduct the connection paths between the plurality of power input terminals 11 and the plurality of power output terminals 12, so as to synchronously output a plurality of power voltages to the plurality of control regions 41 through the plurality of power output terminals 12.

[0042] The following will be described in detail with reference to the accompanying drawings.

[0043] In some embodiments, refer to Figure 1As shown, the power supply voltage includes a first power supply voltage VCC1 and a second power supply voltage VCC2. After receiving the synchronization control signal, the power supply control module 1 synchronously turns on the connection path between each power input terminal 11 and the power output terminal 12, and the first power supply voltage VCC1 and the second power supply voltage VCC2 supply power to the two control regions 41 synchronously, so that the two control regions 41 light up synchronously. Of course, it should be noted that Figure 1 In this example, two control regions 41 are used for illustrative purposes. In the present application, the control regions 41, power supply voltages, power input terminals 11, and power output terminals 12 correspond one by one. According to the number of control regions 41, other numbers of power supply voltages, power input terminals 11, and power output terminals 12 can also be set.

[0044] In some embodiments, referring to Figure 2 as shown, Figure 2 is a schematic structural diagram of the power supply circuit of the display panel provided in the exemplary embodiment of the present disclosure. The synchronization control module 2 includes a delay control circuit 21, which is configured to send a synchronization control signal to the power supply control module 1 after a target delay based on the input control voltage VDD.

[0045] In some embodiments, the delay control circuit 21 includes an RC delay circuit. Referring to Figure 3 as shown, Figure 3 is a schematic structural diagram of the delay control circuit 21 provided in the exemplary embodiment of the present disclosure. The delay control circuit 21 includes a first resistor R1 and a first capacitor C1; one end of the first resistor R1 is coupled to the control voltage VDD, and the other end is respectively connected to the first capacitor C1 and the power supply control module 1. The first capacitor C1 is also connected to the ground terminal GND. The first capacitor C1 is configured to output the control voltage VDD as a synchronization control signal to the power supply control module 1 after accessing the control voltage VDD and after a target delay. Specifically, the control voltage VDD is used to charge the first capacitor C1. During the charging process, the current forms a loop through the first resistor R1 and the first capacitor C1. After a target delay, the charging ends, and the voltage value of the first capacitor C1 is equal to the control voltage VDD. The first capacitor C1 outputs the control voltage VDD as a synchronization control signal to the power supply control module 1. After receiving the synchronization control signal, the power supply control module 1 synchronously turns on the connection path between each power input terminal 11 and the power output terminal 12, and uses the first power supply voltage VCC1 and the second power supply voltage VCC2 to supply power to the two control regions 41 synchronously.

[0046] In some embodiments, if the resistance value of the first resistor R1 is set to R10 and the capacitance value of the first capacitor C1 is set to C10, then the target delay time is calculated by the following formula: time = R10 × C10. By setting different capacitance values and resistance values, different target delays can be determined to meet different delay control requirements.

[0047] In some embodiments, referring to Figure 4 as shown, Figure 4 is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure. The power supply circuit of the display panel further includes a plurality of power supply chips 3 respectively corresponding to a plurality of control regions 41. Each power supply chip 3 is configured to output a power supply voltage to a power input terminal 11 and output a control voltage VDD to a synchronous control module 2.

[0048] In some embodiments, after receiving the first control voltage VDD and after a target delay, the synchronous control module 2 sends a synchronous control signal to the power supply control module 1. The difference between the earliest power supply time and the latest power supply time among the plurality of power supply chips 3 can be measured in advance through experiments, and the target delay is set to be greater than this difference, so as to ensure that the connection path between the power input terminal 11 and the power output terminal 12 is turned on when all the power supply chips 3 start to supply power.

[0049] In some embodiments, the synchronous control module 2 is configured to send a synchronous control signal to the power supply control module 1 after a target delay when the received input voltage is equal to the control voltage VDD. The number of the power supply chips 3 is set to N. Each power supply chip 3 is configured to output a power supply voltage to a power input terminal 11 and provide a voltage value of (1 / N)×VDD to the synchronous control module 2. When all the power supply chips 3 start to supply power, the input voltage received by the synchronous control module 2 is equal to the control voltage VDD, and then the synchronous control module 2 sends a synchronous control signal to the power supply control module 1 after a target delay.

[0050] Based on the above embodiments, the power supply voltage, the power input terminal 11, the power output terminal 12, and the control region 41 are connected. Based on the synchronous control signal, the connection paths between a plurality of power input terminals 11 and a plurality of power output terminals 12 are synchronously turned on, so as to supply power to a plurality of control regions 41 synchronously by using a plurality of power supply voltages, and eliminate the partition flicker phenomenon of the plurality of control regions 41 during asynchronous power supply. Further, the synchronous control module 2 can also be used to perform delay control on the power supply control module 1, and the target delay can be set according to actual requirements.

[0051] In some embodiments, referring to Figure 5 as shown, Figure 5 is a schematic structural diagram of a power supply circuit of a display panel provided in an exemplary embodiment of the present disclosure.Figure 5 The difference between the illustrated embodiment and Figure 2 the illustrated embodiment is that the synchronization control module 2 includes a delay control chip 22, which is configured to output a low level and, upon detecting the access control voltage VDD, convert from outputting a low level to outputting a high level after a target time delay.

[0052] In some embodiments, referring to Figure 6 the illustration, Figure 6 FIG. is a schematic structural diagram of the synchronization control module 2 provided in an exemplary embodiment of the present disclosure. The synchronization control module 2 further includes a second resistor R2; one end of the second resistor R2 is coupled to the control voltage VDD, and the other end is respectively connected to the delay control chip 22 and the power supply control module 1. The second resistor R2 is used to increase the driving ability of the delay control chip 22. Before the access control voltage VDD is applied, the delay control chip 22 outputs a low level, which can be a 0V voltage. At this time, the delay control chip 22 is equivalent to being grounded. Upon detecting the access control voltage VDD, after a target time delay, the delay control chip 22 converts from outputting a low level to outputting a high level, and the high level is less than or equal to the control voltage VDD. At this time, the control voltage VDD serves as a synchronization control signal and is input to the power supply control module 1 through the second resistor R2, and the power supply control module 1 synchronously conducts the connection paths between the multiple power input terminals 11 and the multiple power output terminals 12.

[0053] In some embodiments, referring to Figure 7 the illustration, Figure 7 FIG. is a schematic structural diagram of the power supply control module 1 provided in an exemplary embodiment of the present disclosure. The power supply control module 1 further includes a plurality of switching elements 13, and each switching element 13 is connected between a power input terminal 11 and a power output terminal 12 and is configured to conduct under the control of a synchronization control signal.

[0054] In some embodiments, referring to Figure 7 the illustration, the switching element 13 includes a first electrode 131 connected to a power input terminal 11, a second electrode 132 connected to a power output terminal 12, and a control electrode 133 connected to the synchronization control module 2. When the switching element 13 receives a synchronization control signal, it conducts the connection path between the first electrode 131 and the second electrode 132.

[0055] In some embodiments, referring to Figure 8 the illustration, Figure 8is a schematic structural diagram of a power supply circuit for a display panel provided in an exemplary embodiment of the present disclosure. Among them, the switching element 13 includes an NMOS (N-Metal-Oxide-Semiconductor) transistor. Specifically, the NMOS transistor includes a first NMOS transistor Q1, a second NMOS transistor Q2, a third NMOS transistor Q3, and a fourth NMOS transistor Q4. The first electrode 131 of the NMOS transistor includes a drain, the second electrode 132 includes a source, and the control electrode 133 includes a gate. The NMOS transistor has a voltage threshold. When the control voltage VDD received by the NMOS transistor from the control electrode 133 is greater than or equal to the voltage threshold, the first electrode 131 and the second electrode 132 are turned on. In a specific implementation, the control voltage VDD is used to charge the first capacitor C1. The control voltage VDD is greater than or equal to the voltage threshold. During the charging process, a current forms a loop through the first resistor R1 and the first capacitor C1. After a target delay, the charging ends, and the voltage value of the first capacitor C1 is equal to the control voltage VDD. The first capacitor C1 uses the control voltage VDD as a synchronous control signal and synchronously outputs it to the 4 control electrodes 133. After receiving the control voltage VDD, the 4 control electrodes 133 synchronously turn on the connection paths between each group of the first electrode 131 and the second electrode 132, and use the first power supply voltage VCC1, the second power supply voltage VCC2, the third power supply voltage VCC3, and the fourth power supply voltage VCC4 to supply power to the 4 control regions 41, so that the 4 control regions 41 light up synchronously.

[0056] Please refer to Figure 10 and Figure 11 as shown in Figure 10 is a power supply circuit in the prior art. The first power supply voltage VCC1, the second power supply voltage VCC2, the third power supply voltage VCC3, and the fourth power supply voltage VCC4 are directly connected to the 4 control regions 41. Figure 11 is Figure 10 the corresponding power supply voltage waveform diagram. Among them, V represents the voltage value, T represents the time. The first power supply voltage VCC1, the second power supply voltage VCC2, the third power supply voltage VCC3, and the fourth power supply voltage VCC4 do not start to increase simultaneously, which will cause the 4 control regions 41 not to receive the power supply voltage synchronously, and further cause the 4 control regions 41 to flicker in partitions, affecting the visual effect.

[0057] Please refer to Figure 12 as shown in Figure 12 is Figure 8Corresponding power supply voltage and control voltage waveform diagram, where VCC1 represents the first power supply voltage transmitted by the first NMOS transistor Q1, VCC2 represents the second power supply voltage transmitted by the second NMOS transistor Q2, VCC3 represents the third power supply voltage transmitted by the third NMOS transistor Q3, VCC4 represents the fourth power supply voltage transmitted by the fourth NMOS transistor Q4, time represents the target delay, and VDD represents the control voltage VDD transmitted by the delay control circuit 21. After the target delay, the delay control circuit 21 synchronously provides the control voltage VDD to the first NMOS transistor Q1, the second NMOS transistor Q2, the third NMOS transistor Q3, and the fourth NMOS transistor Q4. The first NMOS transistor Q1, the second NMOS transistor Q2, the third NMOS transistor Q3, and the fourth NMOS transistor Q4 are synchronously turned on, and then the first power supply voltage VCC1, the second power supply voltage VCC2, the third power supply voltage VCC3, and the fourth power supply voltage VCC4 start to increase simultaneously, so that the 4 control regions 41 receive the power supply voltage synchronously.

[0058] In some embodiments, refer to Figure 9 as shown in Figure 9 is a schematic structural diagram of the power supply circuit of the display panel provided in the exemplary embodiment of the present disclosure. Specifically, when implementing, before the control voltage VDD is connected, the delay control chip 22 outputs a low level, and the low level can be 0V voltage. At this time, the delay control chip 22 is equivalent to being grounded. When it is detected that the control voltage VDD is connected, after the target time delay, the delay control chip 22 switches from outputting a low level to outputting a high level, and the high level is less than or equal to the control voltage VDD. At this time, the control voltage VDD serves as a synchronous control signal and is input to the 4 control electrodes 133 through the second resistor R2. After the 4 control electrodes 133 receive the control voltage VDD, the connection paths between each group of the first electrodes 131 and the second electrodes 132 are synchronously turned on, and the first power supply voltage VCC1, the second power supply voltage VCC2, the third power supply voltage VCC3, and the fourth power supply voltage VCC4 are used to supply power to the 4 control regions 41 synchronously.

[0059] The present application also proposes a display panel, and the display panel includes the power supply circuit of the display panel described in any one of the above embodiments.

[0060] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0061] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0062] Among the embodiments, implementation manners and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0063] The above are only the preferred embodiments of the present application, and do not impose any form of limitation on the present application. However, any simple modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A power supply circuit for a display panel, the display panel comprising a plurality of control areas, characterized in that: include: A power supply control module, comprising a plurality of power input terminals and a plurality of power output terminals, wherein the plurality of power input terminals are respectively coupled to a plurality of power supply voltages, and the plurality of power output terminals are respectively connected to different control areas, and each of the power input terminals corresponds to one of the power output terminals, and is used to supply power to the control area through the corresponding power output terminal with the power supply voltage coupled to the power input terminal; A synchronization control module is connected to the power supply control module and is used to send a synchronization control signal to the power supply control module to control the power supply control module to synchronously conduct the connection path between the multiple power input terminals and the multiple power output terminals, so as to synchronously output the multiple power supply voltages to the multiple control areas through the multiple power output terminals.

2. The power supply circuit according to claim 1, characterized in that: The synchronous control module includes a delay control circuit configured to send the synchronous control signal to the power supply control module after a target delay based on an input control voltage.

3. The power supply circuit according to claim 2, characterized in that: The delay control circuit includes a first resistor and a first capacitor; One end of the first resistor is coupled to the control voltage, and the other end is connected to the first capacitor and the power supply control module respectively.

4. The power supply circuit according to claim 3, characterized in that: The first capacitor is configured to output the control voltage as the synchronous control signal to the power supply control module after the control voltage is connected and a target delay has passed.

5. The power supply circuit according to claim 2, characterized in that: It also includes a plurality of power supply chips corresponding to the plurality of control areas respectively, each of the power supply chips being used to output the power supply voltage to one of the power supply input terminals and to output the control voltage to the synchronous control module.

6. The power supply circuit according to claim 1, characterized in that: The synchronization control module includes a delay control chip, which is configured to output a low level, and when a control voltage is detected to be connected, the delay control chip is converted from outputting a low level to outputting a high level after a target delay.

7. The power supply circuit according to claim 6, characterized in that: The synchronous control module also includes a second resistor; One end of the second resistor is coupled to the control voltage, and the other end is connected to the delay control chip and the power supply control module respectively.

8. The power supply circuit according to any one of claims 1 to 7, characterized in that: The power supply control module further includes a plurality of switch elements, each of which is connected between one of the power input terminals and one of the power output terminals and is configured to be turned on under the control of the synchronous control signal.

9. The power supply circuit according to claim 8, characterized in that: The switching element includes a first electrode connected to one of the power input terminals, a second electrode connected to one of the power output terminals, and a control electrode connected to the synchronization control module. When the switching element receives the synchronization control signal, it opens a connection path between the first electrode and the second electrode.

10. A display panel, characterized in that: The display panel comprises a power supply circuit for a display panel according to any one of claims 1 to 9.

Images