A pixel driving circuit and display device

Abstract

The application discloses a pixel driving circuit and a display device, wherein the pixel driving circuit comprises a driving switch, a liquid crystal capacitor, a feedback capacitor and a pressure detection module; the control end of the driving switch is connected with a scanning line; the first end of the driving switch is connected with a data line; the first end of the liquid crystal capacitor is connected with the second end of the driving switch; the second end of the liquid crystal capacitor is connected with a common electrode end; the first end of the feedback capacitor is connected with the first end of the liquid crystal capacitor; the input end of the pressure detection module is connected with the data line; the output end of the pressure detection module is connected with the second end of the feedback capacitor; the pressure detection module is configured to detect pressure and output a second signal according to the pressure detection result and a first signal of the data line; the polarity of the second signal is opposite to that of the first signal, and the voltage value of the second signal is positively correlated with the pressure detection result. In the above manner, the influence of external pressure on the display effect of the real panel can be reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a pixel driving circuit and a display device. Background Technology

[0002] Liquid Crystal Display (LCD) is a type of flat panel display used in television and computer screens. Its advantages include low power consumption, small size, and low radiation. LCDs utilize a liquid crystal solution in two polarizing materials; when an electric current passes through the liquid, the crystals rearrange to achieve image formation.

[0003] Current LCD screens suffer from trace mura, which manifests as follows: when a hard object scratches across the surface of the LCD screen, the liquid crystal, which is originally under the influence of an electric field, changes its rotation angle due to the external pressure, resulting in a whitish mura on the panel that takes some time to disappear. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a pixel driving circuit and a display device that can reduce the impact of external pressure on the display effect of the display panel.

[0005] One technical solution adopted in this application is to provide a pixel driving circuit, which includes: a driving switch, the control terminal of which is connected to a scan line, and a first terminal of which is connected to a data line; a liquid crystal capacitor, the first terminal of which is connected to a second terminal of the driving switch, and the second terminal of which is connected to a common terminal; a feedback capacitor, the first terminal of which is connected to the first terminal of the liquid crystal capacitor; and a pressure detection module, the input terminal of which is connected to the data line, and the output terminal of which is connected to the second terminal of the feedback capacitor. The pressure detection module is configured to detect pressure and output a second signal based on the pressure detection result and a first signal from the data line. The polarity of the second signal is opposite to that of the first signal, and the voltage value of the second signal is positively correlated with the pressure detection result.

[0006] In one embodiment, the pressure detection module includes a positive pressure coefficient varistor, and the voltage value of the second signal is positively correlated with the resistance value of the positive pressure coefficient varistor.

[0007] In one embodiment, the pressure detection module includes a differential amplifier, the positive feedback resistor of which is a positive pressure coefficient varistor.

[0008] In one embodiment, the differential amplifier includes: an operational amplifier, the output terminal of which is connected to the second terminal of a feedback capacitor; a first resistor, the first terminal of which is connected to a data line, and the second terminal of which is connected to the non-inverting input terminal of the operational amplifier; a second resistor, the first terminal of which is connected to the non-inverting input terminal of the operational amplifier, and the second terminal of which is connected to the output terminal of the operational amplifier; wherein the second resistor is a positive pressure coefficient varistor; a third resistor, the first terminal of which is connected to a common terminal, and the second terminal of which is connected to the inverting input terminal of the operational amplifier; and a fourth resistor, the first terminal of which is connected to the inverting input terminal of the operational amplifier, and the second terminal of which is grounded.

[0009] In one embodiment, the resistance values ​​of the first resistor and the third resistor are equal, and the resistance values ​​of the second resistor and the fourth resistor are equal.

[0010] In one embodiment, the pixel driving circuit further includes a detection switch, a first end of which is connected to the output of the pressure detection module, and a second end of which is connected to the second end of the feedback capacitor. The detection switch is configured to turn on when pressure is detected.

[0011] In one embodiment, the pixel driving circuit further includes a fifth resistor, the first end of which is connected to the control terminal of the detection switch, and the second end of which is configured to receive the power supply voltage. The fifth resistor is a negative pressure coefficient varistor.

[0012] In one embodiment, the detection switch is an NMOS transistor.

[0013] In one embodiment, the pixel driving circuit further includes a storage capacitor, the first end of which is connected to the second end of the driving switch, and the second end of which is connected to a common terminal.

[0014] Another technical solution adopted in this application is: to provide a display device, the display device including a display panel and a backlight module, the display panel including an array substrate, a color filter substrate and a liquid crystal layer between the array substrate and the color filter substrate, and the array substrate is provided with a pixel driving circuit as described above.

[0015] The pixel driving circuit provided in this application includes: a driving switch, the control terminal of which is connected to a scan line, and a first terminal of which is connected to a data line; a liquid crystal capacitor, the first terminal of which is connected to a second terminal of the driving switch, and the second terminal of which is connected to a common terminal; a feedback capacitor, the first terminal of which is connected to the first terminal of the liquid crystal capacitor; and a pressure detection module, the input terminal of which is connected to the data line, and the output terminal of which is connected to the second terminal of the feedback capacitor. The pressure detection module is configured to detect pressure and output a second signal based on the pressure detection result and a first signal from the data line. The polarity of the second signal is opposite to that of the first signal, and the voltage value of the second signal is positively correlated with the pressure detection result. By optimizing the circuit design within the display panel without altering any signals input to the panel, this approach achieves the goal of reducing the impact of external pressure on the liquid crystal by monitoring the pressure, thereby improving tracemura and enhancing the display effect of the liquid crystal display panel, without compromising product quality (such as transmittance, contrast, or color coordinates). Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0017] Figure 1 This is a before-and-after comparison diagram of the liquid crystal layer being squeezed by external force;

[0018] Figure 2 This is a circuit diagram of the first embodiment of the pixel driving circuit provided in this application;

[0019] Figure 3 This is a circuit diagram of the second embodiment of the pixel driving circuit provided in this application;

[0020] Figure 4 This is a circuit diagram of the third embodiment of the pixel driving circuit provided in this application;

[0021] Figure 5 This is a schematic diagram comparing the pixel electrode voltage before and after the improvement;

[0022] Figure 6 This is a schematic diagram of an embodiment of the display device provided in this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] See Figure 1 , Figure 1 This is a before-and-after comparison diagram of the liquid crystal layer being squeezed by external force. When an external force squeezes the display panel, or when a relatively hard object scratches the surface of the display panel, the liquid crystal, which was originally under the influence of an electric field, changes its flip angle under the influence of external pressure. Figure 1 In the trace mura area, the dashed line represents the original flip angle of the liquid crystal, and the solid line represents the changed flip angle. This will cause a white mura to appear on the panel, which will take some time to disappear.

[0027] One solution is to reduce the gamma voltage, i.e., reduce the driving voltage; however, this will decrease the product's contrast, thereby reducing the panel quality.

[0028] See Figure 2 , Figure 2 This is a circuit diagram of the first embodiment of the pixel driving circuit provided in this application. The pixel driving circuit 100 includes a driving switch T1, a liquid crystal capacitor Clc, a feedback capacitor Ca, and a pressure detection module 10.

[0029] In this configuration, the control terminal of the drive switch T1 is connected to the scan line gate, and the first terminal of the drive switch T1 is connected to the data line source; the first terminal of the liquid crystal capacitor Clc is connected to the second terminal of the drive switch T1, and the second terminal of the liquid crystal capacitor Clc is connected to the common terminal Vcom; the first terminal of the feedback capacitor Ca is connected to the first terminal of the liquid crystal capacitor Clc; the input terminal of the pressure detection module 10 is connected to the data line source, and the output terminal of the pressure detection module 10 is connected to the second terminal of the feedback capacitor Ca. The pressure detection module 10 is configured to detect pressure and outputs a second signal S2 based on the pressure detection result and the first signal S1 of the data line source. The polarity of the second signal S2 is opposite to that of the first signal S1, and the voltage value of the second signal S2 is positively correlated with the pressure detection result.

[0030] Specifically, the pixel driving circuit 100 includes multiple scan line gates and multiple data line sources, which are crisscrossed to form multiple pixel units. Each pixel unit includes the aforementioned driving switch T1, liquid crystal capacitor Clc, feedback capacitor Ca, and pressure detection module 10.

[0031] In this circuit, the driving switch T1 can be a MOS transistor, such as an NMOS transistor, and the liquid crystal capacitor Clc is the equivalent capacitance of the upper and lower electrodes of the liquid crystal layer. When the signal of the scan line gate is high, the driving switch T1 is turned on, and the signal of the data line source is input to the upper electrode of the liquid crystal capacitor Clc. The lower electrode of the liquid crystal capacitor Clc is input to the common potential Vcom, thus forming a voltage difference across the liquid crystal layer. This causes the liquid crystal molecules in the liquid crystal layer to deflect. The magnitude of the voltage difference between the source signal and the common potential Vcom determines the magnitude of the deflection angle of the liquid crystal molecules.

[0032] Optionally, the pixel driving circuit 100 further includes a storage capacitor Cst. The first terminal of the storage capacitor Cst is connected to the second terminal of the driving switch T1, and the second terminal of the storage capacitor Cst is connected to the common terminal Vcom. Generally, the liquid crystal capacitor Clc is relatively small, and the storage capacitor Cst is usually much larger than the liquid crystal capacitor Clc. It is used to maintain the charge of the liquid crystal capacitor Clc. When the liquid crystal capacitor Clc experiences leakage, the storage capacitor Cst needs to recharge the liquid crystal capacitor Clc in a timely manner.

[0033] In this embodiment, the pressure detection module 10 is configured to detect pressure and output a second signal S2 based on the pressure detection result and the first signal S1 of the data line source. The polarity of the second signal S2 is opposite to that of the first signal S1, and the voltage value of the second signal S2 is positively correlated with the pressure detection result.

[0034] Pressure detection mainly detects the external pressure on the entire display panel corresponding to the pixel unit, including pressing, scratching by hard objects, etc. In the usage scenarios of display panels, it is generally caused by user touch operation or external pressure such as stylus.

[0035] Among them, the first signal S1 is the source signal.

[0036] Specifically, when the first signal S1 is positive, the second signal S2 is negative, and when the first signal S1 is negative, the second signal S2 is positive. Furthermore, the absolute value of the second signal S2 is positively correlated with the pressure detection result; that is, the greater the pressure, the greater the absolute value of the second signal S2.

[0037] Furthermore, compared to the conventional pixel driving circuit, the embodiment adds a feedback capacitor Ca. According to the principle of capacitive coupling, when the first signal S1 provided by the data line source is positive, the second signal S2 is negative. This negative feedback voltage acts on the non-common terminal of the feedback capacitor Ca. According to the principle that the voltage across the capacitor cannot change abruptly, a negative coupling voltage ΔV will be generated at the common terminal of the feedback capacitor Ca, the liquid crystal capacitor Clc, and the storage capacitor Cs, thereby reducing the driving voltage of the liquid crystal capacitor Clc at the pressure point.

[0038] in, U0 is the voltage of the second signal S2.

[0039] Similarly, when the first signal S1 provided by the data line source is negative, the second signal S2 is positive. This positive feedback voltage acts on the non-common terminal of the feedback capacitor Ca. According to the principle that the voltage across the capacitor cannot change abruptly, a positive coupling voltage ΔV will be generated at the common terminal of the feedback capacitor Ca, the liquid crystal capacitor Clc, and the storage capacitor Cs, thereby reducing the driving voltage of the liquid crystal capacitor Clc at the pressure point.

[0040] The pixel driving circuit provided in this embodiment includes: a driving switch, the control terminal of which is connected to the scan line, and the first terminal of which is connected to the data line; a liquid crystal capacitor, the first terminal of which is connected to the second terminal of the driving switch, and the second terminal of which is connected to a common terminal; a feedback capacitor, the first terminal of which is connected to the first terminal of the liquid crystal capacitor; and a pressure detection module, the input terminal of which is connected to the data line, and the output terminal of which is connected to the second terminal of the feedback capacitor. The pressure detection module is configured to detect pressure and output a second signal based on the pressure detection result and the first signal of the data line. The polarity of the second signal is opposite to that of the first signal, and the voltage value of the second signal is positively correlated with the pressure detection result. Through this method, only the circuit design within the display panel is optimized and modified, without any changes to any signals input to the panel. This allows for the reduction of the impact of external pressure on the liquid crystal by monitoring the pressure, thereby improving tracemura and enhancing the display effect of the liquid crystal display panel, without reducing product quality (such as reduced transmittance, contrast, or color coordinates).

[0041] See Figure 3 , Figure 3 This is a circuit diagram of the second embodiment of the pixel driving circuit provided in this application. The pixel driving circuit 100 includes a driving switch T1, a liquid crystal capacitor Clc, a feedback capacitor Ca, and a pressure detection module 10.

[0042] In this configuration, the control terminal of the drive switch T1 is connected to the scan line gate, and the first terminal of the drive switch T1 is connected to the data line source; the first terminal of the liquid crystal capacitor Clc is connected to the second terminal of the drive switch T1, and the second terminal of the liquid crystal capacitor Clc is connected to the common terminal Vcom; the first terminal of the feedback capacitor Ca is connected to the first terminal of the liquid crystal capacitor Clc; the input terminal of the pressure detection module 10 is connected to the data line source, and the output terminal of the pressure detection module 10 is connected to the second terminal of the feedback capacitor Ca. The pressure detection module 10 is configured to detect pressure and outputs a second signal S2 based on the pressure detection result and the first signal S1 of the data line source. The polarity of the second signal S2 is opposite to that of the first signal S1, and the voltage value of the second signal S2 is positively correlated with the pressure detection result.

[0043] The pressure detection module 10 includes a positive pressure coefficient varistor and a differential amplifier. The positive feedback resistor of the differential amplifier is the positive pressure coefficient varistor, and the voltage value of the second signal S2 is positively correlated with the resistance value of the positive pressure coefficient varistor.

[0044] Specifically, the differential amplifier includes an operational amplifier OP, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4. The output terminal of the operational amplifier OP is connected to the second terminal of the feedback capacitor Ca. The first terminal of the first resistor R1 is connected to the data line source, and the second terminal of the first resistor R1 is connected to the positive input terminal (+) of the operational amplifier OP. The first terminal of the second resistor R2 is connected to the positive input terminal of the operational amplifier OP, and the second terminal of the second resistor R2 is connected to the output terminal of the operational amplifier OP. The first terminal of the third resistor R3 is connected to the common terminal Vcom, and the second terminal of the third resistor R3 is connected to the inverting input terminal (-) of the operational amplifier OP. The first terminal of the fourth resistor R4 is connected to the inverting input terminal of the operational amplifier OP, and the second terminal of the fourth resistor R2 is grounded to GND.

[0045] Understandably, the input and output of the differential amplifier described above can be expressed as follows:

[0046]

[0047] Where U0 is the voltage of the second signal S2, U s U is the voltage of the first signal S1. v The voltage at the common terminal Vcom.

[0048] In one embodiment, the resistance values ​​of the first resistor R1 and the third resistor R2 can be set to be equal, and the resistance values ​​of the second resistor R2 and the fourth resistor R4 can be set to be equal. Then, the input and output of the differential amplifier described above can be expressed as follows:

[0049]

[0050] Understandably, if the second resistor R2 is set as a positive pressure coefficient varistor, the greater the external pressure, the greater the resistance value of the second resistor R2, which in turn makes the voltage U0 of the second signal S2 greater, thus realizing the detection of the magnitude of the external pressure.

[0051] See Figure 4 , Figure 4 This is a circuit diagram of the third embodiment of the pixel driving circuit provided in this application. The pixel driving circuit 100 includes a driving switch T1, a detection switch T2, a liquid crystal capacitor Clc, a feedback capacitor Ca, and a pressure detection module 10.

[0052] In this configuration, the control terminal of the drive switch T1 is connected to the scan line gate, and the first terminal of the drive switch T1 is connected to the data line source; the first terminal of the liquid crystal capacitor Clc is connected to the second terminal of the drive switch T1, and the second terminal of the liquid crystal capacitor Clc is connected to the common terminal Vcom; the first terminal of the feedback capacitor Ca is connected to the first terminal of the liquid crystal capacitor Clc; the input terminal of the pressure detection module 10 is connected to the data line source, the first terminal of the detection switch T2 is connected to the output terminal of the pressure detection module 10, and the second terminal of the detection switch T2 is connected to the second terminal of the feedback capacitor Ca. The pressure detection module 10 is configured to detect pressure and outputs a second signal S2 based on the pressure detection result and the first signal S1 of the data line source. The polarity of the second signal S2 is opposite to that of the first signal S1, and the voltage value of the second signal S2 is positively correlated with the pressure detection result.

[0053] The detection switch T2 is configured to turn on when pressure is detected.

[0054] Understandably, in some application scenarios, there is no external force, and compensation through the feedback capacitor Ca is not necessary. In this case, this embodiment uses a detection switch T2 to achieve compensation control. For example, when an external force is detected, or when the detected external force is greater than a set threshold, the detection switch T2 is turned on; when no external force is detected, or when the detected external force is less than the set threshold, the detection switch T2 is turned off.

[0055] Optionally, in one embodiment, the detection switch T2 can be controlled by a fifth resistor R5, the first end of which is connected to the control terminal of the detection switch T2, and the second end of which is configured to receive the power supply voltage VGH.

[0056] Specifically, the fifth resistor R5 is a negative pressure coefficient varistor, and the detection switch T2 is an NMOS transistor. When an external force is detected, or when the detected external force is greater than a set threshold, the fifth resistor R5 decreases, the gate voltage of the detection switch T2 increases, and thus the detection switch T2 is turned on. Conversely, when no external force is detected, or when the detected external force is less than the set threshold, the fifth resistor R5 increases, the gate voltage of the detection switch T2 decreases, and thus the detection switch T2 is turned off.

[0057] By using the above method, an additional negative pressure coefficient varistor is set to detect external force and control the operation of the feedback capacitor Ca. This ensures that the voltage compensation only works when subjected to external force, and does not perform voltage compensation under normal display conditions, thus avoiding affecting the display effect during normal display.

[0058] In combination with the above Figures 2-4 Examples of the embodiments, and see the following: Figure 5 , Figure 5This is a comparative diagram of pixel electrode voltages before and after the improvement. The upper part of the waveform diagram shows the pixel voltage before the improvement, and the lower part of the waveform diagram shows the pixel voltage after the improvement for pixels with the same gray level as the upper part. It can be seen from the diagram that ΔV1>ΔV2.

[0059] See Figure 6 , Figure 6 This is a schematic diagram of a display device according to an embodiment of the present application. The display device 600 includes a display panel 61 and a backlight module 62. The display panel 61 includes an array substrate 611, a color filter substrate 612 and a liquid crystal layer 613 between the array substrate 611 and the color filter substrate 612. The array substrate 611 is provided with a pixel driving circuit 100 as described in the above embodiment.

[0060] Understandably, the display device 600 in this embodiment can be static, simple matrix, or active matrix. Passive matrix displays can be further divided into twisted nematic (TN), super twisted nematic (STN), and other passive matrix liquid crystal displays; while active matrix displays can be broadly classified into thin film transistor (TFT) and metal / insulator / metal (MIM) types. This application does not limit the type of liquid crystal display device.

[0061] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0062] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0063] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0064] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A pixel driving circuit, characterized by comprising: The pixel driving circuit comprises: a driving switch, a control end of the driving switch being connected with a scan line, a first end of the driving switch being connected with a data line; a liquid crystal capacitor, a first end of the liquid crystal capacitor being connected with a second end of the driving switch, a second end of the liquid crystal capacitor being connected with a common electrode end; a feedback capacitor, a first end of the feedback capacitor being connected with the first end of the liquid crystal capacitor; a pressure detection module, an input end of the pressure detection module being connected with the data line, an output end of the pressure detection module being connected with a second end of the feedback capacitor, the pressure detection module being configured to detect pressure and output a second signal according to a pressure detection result and a first signal of the data line, a polarity of the second signal being opposite to that of the first signal, and a voltage value of the second signal being positively correlated with the pressure detection result; the pressure detection module comprises a differential amplifier, a positive feedback resistor of the differential amplifier being a positive pressure coefficient pressure sensitive resistor; the differential amplifier comprises: an operational amplifier, an output end of the operational amplifier being connected with the second end of the feedback capacitor; a first resistor, a first end of the first resistor being connected with the data line, a second end of the first resistor being connected with a positive input end of the operational amplifier; a second resistor, a first end of the second resistor being connected with the positive input end of the operational amplifier, a second end of the second resistor being connected with the output end of the operational amplifier; wherein the second resistor is a positive pressure coefficient pressure sensitive resistor; a third resistor, a first end of the third resistor being connected with the common electrode end, a second end of the third resistor being connected with a negative input end of the operational amplifier; a fourth resistor, a first end of the fourth resistor being connected with the negative input end of the operational amplifier, a second end of the fourth resistor being grounded.

2. The pixel driving circuit according to claim 1, characterized in that, the voltage value of the second signal is positively correlated with a resistance value of the positive pressure coefficient pressure sensitive resistor.

3. The pixel driving circuit of claim 1, wherein, the resistance values of the first resistor and the third resistor are equal, and the resistance values of the second resistor and the fourth resistor are equal.

4. The pixel driving circuit of claim 1, wherein, the pixel driving circuit further comprises a detection switch, a first end of the detection switch being connected with the output end of the pressure detection module, a second end of the detection switch being connected with the second end of the feedback capacitor, the detection switch being configured to be turned on when pressure is detected.

5. The pixel driving circuit of claim 4, wherein, the pixel driving circuit further comprises a fifth resistor, a first end of the fifth resistor being connected with a control end of the detection switch, a second end of the fifth resistor being configured to receive a power voltage, the fifth resistor being a negative pressure coefficient pressure sensitive resistor.

6. The pixel driving circuit of claim 4, wherein, the detection switch is an NMOS transistor.

7. The pixel driving circuit of claim 1, wherein, the pixel driving circuit further comprises a storage capacitor, a first end of the storage capacitor being connected with the second end of the driving switch, a second end of the storage capacitor being connected with the common electrode end.

8. A display device, characterized by comprising: the display device comprises a display panel and a backlight module, the display panel comprising an array substrate, a color filter substrate and a liquid crystal layer between the array substrate and the color filter substrate, the array substrate being provided with the pixel driving circuit according to any one of claims 1-7.

Images