Display device and display device driving method

Abstract

The application provides a display device and a display device driving method. The display device comprises a reference voltage module, a pixel driving circuit, a screen detection circuit and a source driving chip. The first end of the screen detection circuit is connected with the pixel driving circuit through a first data signal line, the second end is connected with an enable signal line, and the third end is connected with the reference voltage module through a second data signal line. When the enable signal line receives a low potential control signal in a driving second state, the screen detection circuit turns on the second data signal line and the first data signal line, and meanwhile, the source driving chip outputs a low potential voltage signal. The application utilizes the screen detection circuit to output the voltage of the reference voltage module to the first data signal line in the driving second state, so that the source driving chip can output the low potential voltage signal at this time, thereby saving the power consumption generated by the original source driving chip in this state, and achieving the purpose of reducing the module power consumption.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display device and a display device driving method. Background Technology

[0002] In existing panel driver architectures, a screen detection circuit (CT TEST circuit, or CT circuit for short) is typically included. However, when the module is illuminated, the CT circuit is usually shielded to isolate its influence, i.e., the enable signal connected to the CT circuit is set to a high level. Meanwhile, in LTPO applications, to improve flicker performance, the source driver chip's output voltage needs to maintain a high-level DC voltage output during the drive skip phase, which undoubtedly results in wasted power consumption.

[0003] Therefore, the existing technology has the technical problem of high module power consumption during the driving process, which needs to be improved. Summary of the Invention

[0004] This application provides a display device and a display device driving method to solve the technical problem of high module power consumption during the driving process in the prior art.

[0005] This application provides a display device, including:

[0006] The reference voltage module is used to provide a reference DC voltage signal;

[0007] A pixel driving circuit, connected to the first data signal line, is used to receive the voltage input from the first data signal line to drive the sub-pixel to emit light;

[0008] A screen detection circuit is provided, wherein a first terminal of the screen detection circuit is connected to a first data signal line, a second terminal of the screen detection circuit is connected to an enable signal line, and a third terminal of the screen detection circuit is connected to a reference voltage module via a second data signal line; wherein the enable signal line is used to receive a high-potential control signal for driving a first state or a low-potential control signal for driving a second state, and the screen detection circuit is used to disconnect the second data signal line from the first data signal line when the enable signal line receives the high-potential control signal, and to connect the second data signal line from the first data signal line when the enable signal line receives the low-potential control signal;

[0009] A source driver chip, wherein the voltage output terminal of the source driver chip is connected to the first data signal line; wherein the source driver chip is used to output a high-potential voltage signal in the first driving state and to output a low-potential voltage signal in the second driving state.

[0010] In the display device of this application, the screen detection circuit includes a detection transistor, the first electrode of the detection transistor is connected to the first data signal line, the gate of the detection transistor is connected to the enable signal line, and the second electrode of the detection transistor is connected to the second data signal line.

[0011] In the display device of this application, the detection transistor is a P-type transistor.

[0012] In the display device of this application, the display device further includes a control signal input module. The output terminal of the control signal input module is connected to the enable signal line. The control signal input module is used to input a high-potential control signal to the enable signal line in the first driving state and to input a low-potential control signal to the enable signal line in the second driving state.

[0013] In the display device of this application, the enable signal line is connected to the voltage output terminal of the source driver chip. The source driver chip is used to input a high-potential control signal to the enable signal line in the first driving state and to input a low-potential control signal to the enable signal line in the second driving state.

[0014] In the display device of this application, the voltage of the second data signal line is consistent in the first driving state and the second driving state, and is consistent with the output voltage of the reference voltage module.

[0015] In the display device of this application, the voltage of the second data signal line is inconsistent in the first driving state and the second driving state. The voltage of the second data signal line in the first driving state is a high potential voltage, which is consistent with the voltage of the enable signal line in the first driving state. The voltage of the second data signal line in the second driving state is consistent with the output voltage of the reference voltage module.

[0016] In the display device of this application, the first driving state is a driving active state, and the second driving state is a driving skip state.

[0017] This application also provides a display device driving method, applied to a display device, the display device including a reference voltage module, a pixel driving circuit, a screen detection circuit, and a source driving chip, the method including:

[0018] The reference voltage module provides a reference DC voltage signal.

[0019] In the first driving state, a high-potential control signal is received through the enable signal line, and based on the high-potential control signal, the screen detection circuit is controlled to disconnect the second data signal line from the first data signal line. A high-potential voltage signal is output to the first data signal line through the source driver chip, and the high-potential voltage signal is output to the pixel driver circuit through the first data signal line. The enable signal line is connected to the second terminal of the screen detection circuit, the second data signal line is connected to the third terminal of the screen detection circuit and the reference voltage module, and the first data signal line is connected to the first terminal of the screen detection circuit, the voltage output terminal of the source driver chip, and the pixel driver circuit.

[0020] In the second driving state, a low-potential control signal is received through the enable signal line, and the screen detection circuit is controlled to turn on the second data signal line and the first data signal line based on the low-potential control signal. The source driver chip outputs a low-potential voltage signal to the first data signal line, the reference DC voltage signal is output to the first data signal line through the second data signal line, and the reference DC voltage signal is output to the pixel driving circuit through the first data signal line.

[0021] In the display device driving method of this application, the screen detection circuit includes a detection transistor. The method further includes: in the first driving state, controlling the detection transistor to turn off based on the high potential control signal via the enable signal line; and in the second driving state, controlling the detection transistor to turn on based on the low potential control signal via the enable signal line, and turning off the output of the source driver chip.

[0022] Beneficial Effects: This application provides a display device and a display device driving method. The display device includes a reference voltage module, a pixel driving circuit, a screen detection circuit, and a source driving chip. Specifically, the reference voltage module provides a reference DC voltage signal. The pixel driving circuit is connected to a first data signal line and receives the voltage input from the first data signal line to drive sub-pixels to emit light. A first terminal of the screen detection circuit is connected to the first data signal line, a second terminal of the screen detection circuit is connected to an enable signal line, and a third terminal of the screen detection circuit is connected to the reference voltage module via a second data signal line. The enable signal line receives a high-potential control signal for a first driving state or a low-potential control signal for a second driving state. The screen detection circuit disconnects the second data signal line from the first data signal line when the enable signal line receives a high-potential control signal and connects the second data signal line from the first data signal line when the enable signal line receives a low-potential control signal. The voltage output terminal of the source driving chip is connected to the first data signal line. The source driving chip outputs a high-potential voltage signal in the first driving state and a low-potential voltage signal in the second driving state. This application utilizes a screen detection circuit. In the second driving state, it receives a low-potential control signal through the enable signal line, thereby turning on the second data signal line and the first data signal line. This allows the reference DC voltage signal output by the reference voltage module to be transmitted from the second data signal line to the first data signal line, replacing the original voltage signal of the source driver chip. This enables the source driver chip to output a low-potential voltage signal or even directly shut down the output. Consequently, the power consumption generated by the original source driver chip in the second driving state can be saved, thereby achieving the purpose of reducing module power consumption and improving the image quality of low-frequency displays. Attached Figure Description

[0023] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0024] Figure 1 This is a waveform diagram of the display device driving process in the prior art provided in the embodiments of this application.

[0025] Figure 2 This is a schematic diagram of the planar structure of the display device provided in the embodiments of this application.

[0026] Figure 3 This is a schematic diagram of the pixel driving circuit provided in the embodiments of this application.

[0027] Figure 4 This is a schematic diagram showing the connection of the pixel unit, pixel driving circuit, and screen detection circuit provided in the embodiments of this application.

[0028] Figure 5 This is a schematic diagram of another planar structure of the display device provided in the embodiments of this application.

[0029] Figure 6 This is another planar structural schematic diagram of the display device provided in the embodiments of this application.

[0030] Figure 7 This is a waveform diagram of the display device driving process provided in the embodiments of this application.

[0031] Figure 8 This is a flowchart illustrating the display device driving method provided in an embodiment of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. 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.

[0033] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0037] This application provides a display device and a display device driving method to solve the technical problem of high module power consumption during the driving process in the prior art.

[0038] In existing technologies, such as Figure 1 As shown, Figure 1 The waveform diagram of the prior art display device driving process provided in the embodiments of this application shows that when the module is lit, in order to isolate the influence of the screen detection circuit, the screen detection circuit is generally shielded, that is, the voltage signal of the enable signal line is set to a high level. At the same time, in LTPO applications, in order to improve the flickering phenomenon, it is necessary to maintain a high level output in the second driving state. Since the screen detection circuit is shielded, only the source driver chip can provide a high level DC voltage output, which will undoubtedly cause a waste of module power consumption, and the power consumption of the module may vary for different screens and different frame rates.

[0039] Therefore, embodiments of this application provide a display device that can reduce module power consumption, such as... Figure 2 As shown, Figure 2 This is a schematic diagram of the planar structure of a display device provided in an embodiment of this application. The display device includes a reference voltage module 50, a pixel driving circuit 20, a screen detection circuit 40, and a source driving chip 30. Specifically, the display device includes:

[0040] Reference voltage module 50 is used to provide a reference DC voltage signal;

[0041] The pixel driving circuit 20 is connected to the first data signal line 12 and is used to receive the voltage input from the first data signal line 12 to drive the sub-pixel to emit light.

[0042] The screen detection circuit 40 has a first terminal connected to the first data signal line 12, a second terminal connected to the enable signal line 14, and a third terminal connected to the reference voltage module 50 via the second data signal line 13. The enable signal line 14 receives a high-potential control signal for driving the first state or a low-potential control signal for driving the second state. The screen detection circuit 40 disconnects the second data signal line 13 from the first data signal line 12 when the enable signal line 14 receives a high-potential control signal, and connects the second data signal line 13 from the first data signal line 12 when the enable signal line 14 receives a low-potential control signal.

[0043] The source driver chip 30 has its voltage output terminal connected to the first data signal line 12. The source driver chip 30 is used to output a high-potential voltage signal in the first driving state and a low-potential voltage signal in the second driving state.

[0044] In addition, the display device also includes a pixel unit 10, which is connected to a pixel driving circuit via a pixel enable signal line 11. The pixel unit 10 includes multiple sub-pixels (RGB), which are driven to emit light by the pixel driving circuit 20. The sub-pixels are arranged in an array in the display device, each sub-pixel having the same size and shape. Each sub-pixel is driven by a pixel driving circuit 20. During the display phase, the image is displayed. During the detection phase, the pixel driving circuit 20 detects the threshold voltage of the transistor and compensates the data signal based on the detected threshold voltage to ensure that each sub-pixel emits light normally.

[0045] like Figure 3 As shown, Figure 3 This is a schematic diagram of the pixel driving circuit 20 provided in an embodiment of this application. The pixel driving circuit 20 includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a first capacitor C. st Second capacitor C boostAnd an organic light-emitting diode D1; specifically, the gate of the first transistor T1 is connected to the first node Q, its source is connected to the second node P, and its drain is connected to the third node B; the gate of the second transistor T2 is connected to the first scan signal PScan(n), its source is connected to the first data signal line 12, thereby receiving the data signal of the first data signal line 12, and its drain is connected to the second node P; the gate of the third transistor T3 is connected to the first scan signal NScan(n), its source is connected to the first node Q, and its drain is connected to the third node B; the gate of the fourth transistor T4 is connected to the second scan signal NScan(n-1), its source is connected to the first node Q, and its drain is connected to the third node B; The gate of the fifth transistor T5 is connected to the pixel enable signal line 11, its source is connected to the first power supply signal ELVDD, and its drain is connected to the second node P. The sixth transistor T6 is located between the first transistor T1 and the organic light-emitting diode D1. The gate of the sixth transistor is connected to the pixel enable signal line 11, its source is connected to the third node B, and its drain is connected to the anode of the organic light-emitting diode D1. The gate of the seventh transistor T7 is connected to the first scan signal PScan(n), its source is connected to the reference voltage V11, and its drain is connected to the anode of the organic light-emitting diode D1. The first capacitor C... st One end of the second capacitor is connected to the first power signal ELVDD, and the other end is connected to the first node Q. boost One end of the OLED is connected to the gate of the second transistor T2, and the other end is connected to the first node Q. The anode of the OLED D1 is the drain of the sixth transistor T6, and the cathode of the OLED D1 is connected to the second power supply signal ELVSS.

[0046] It should be noted that, Figure 3 The source and drain of each transistor can be interchanged. The first transistor T1, the second transistor T2, the fifth transistor T5, and the sixth transistor T6 are low-temperature polysilicon transistors; the third transistor T3, the fourth transistor T4, and the seventh transistor T7 can be oxide semiconductor transistors or low-temperature polysilicon transistors.

[0047] In one embodiment, the screen detection circuit includes a detection transistor, a first electrode of which is connected to a first data signal line 12, a gate of which is connected to an enable signal line 14, and a second electrode of which is connected to the second data signal line 13. Specifically, as shown... Figure 4 As shown, Figure 4This is a schematic diagram showing the connection of the pixel unit, pixel driving circuit, and screen detection circuit provided in the embodiments of this application. Different sub-pixels correspond to different detection transistors. However, the first electrode of each detection transistor is connected to the first data signal line 12. The pixel driving circuit 20 converts the voltage signal of the first data signal line 12 to generate a pixel enable signal, which is sent to the pixel enable signal line 11. The pixel enable signal line 11 drives each sub-unit in the pixel unit to emit light according to the specific pixel enable signal. However, the gates of the detection transistors corresponding to different sub-pixels are connected to different enable signal lines 14 and second data signal lines 13. For example, the detection transistor corresponding to the red sub-pixel has its gate connected to the red enable signal line 141 and its second electrode connected to the red second data signal line 131; the detection transistor corresponding to the green sub-pixel has its gate connected to the green enable signal line 142 and its second electrode connected to the green second data signal line 132; and the detection transistor corresponding to the blue sub-pixel has its gate connected to the blue enable signal line 143 and its second electrode connected to the blue second data signal line 133. By connecting the enable signal line 14 in the screen detection circuit 40 to a control signal and the second data signal line 13 to a reference voltage module, the switching of each detection transistor in the screen detection circuit 40 is controlled. In the second driving state, the reference DC voltage output by the reference voltage module is used as the output voltage of the source driver chip (IC Source) 30, so that the output of the source driver chip 30 can be directly turned off, thereby saving module power consumption.

[0048] It should be noted that the first electrode can be either the source or the drain, and correspondingly, the second electrode can be either the drain or the source. Furthermore, the reference voltage module 50 can be a display driver IC, and the screen detection circuit 40 is connected to the reference voltage pin (IC VREF pin) of the display driver IC via the second data signal line 13, thus outputting a reference DC voltage signal to the second data signal line 13.

[0049] In one embodiment, the detection transistor is a P-type transistor. Since a P-type transistor is turned on when its gate is low and turned off when its gate is high, the detection transistor in the screen detection circuit of this application is a P-type transistor.

[0050] In one embodiment, such as Figure 5 As shown, Figure 5This is a schematic diagram of another planar structure of the display device provided in an embodiment of this application. The display device further includes a control signal input module 60. The output terminal of the control signal input module 60 is connected to the enable signal line 14. The control signal input module 60 is used to input a high-level control signal to the enable signal line 14 in a first driving state and a low-level control signal to the enable signal line 14 in a second driving state. Specifically, the control signal input module 60 can be a display driver IC. The enable signal line 14 is connected to a certain GOA pin of the display driver IC, and the GOA signal is used to control the switching of the detection transistor in the screen detection circuit.

[0051] In one embodiment, such as Figure 6 As shown, Figure 6 This is a schematic diagram of another planar structure of the display device provided in this application embodiment. The enable signal line 14 is connected to the voltage output terminal of the source driver chip 30. The source driver chip 30 is used to input a high-level control signal to the enable signal line 14 in a first driving state and a low-level control signal to the enable signal line 14 in a second driving state. Specifically, the enable signal line 14 can be connected to a certain GOUT pin of the source driver chip 30, and the GOUT signal can be used to control the switching of the detection transistor in the screen detection circuit.

[0052] In simple terms, in this embodiment of the application, a potential control signal can be input to the enable signal line 14 through the control signal input module 60 (e.g., GOA), or the potential control signal can be directly input to the enable signal line 14 through the source driver chip 30.

[0053] In one embodiment, the voltage of the second data signal line 13 is consistent in both the first driving state and the second driving state, and is also consistent with the output voltage of the reference voltage module 50. Specifically, the voltage signal on the second data signal line 13 can be provided by the reference voltage module in both the first driving state and the second driving state of the driving process. That is, the voltage of the second data signal line 13 can be set to the reference voltage when driving the second state, and the voltage of the second data signal line 13 can also be set to the reference voltage when driving the first state.

[0054] In one embodiment, such as Figure 7 As shown, Figure 7 The waveform diagram shows the driving process of the display device provided in the embodiment of this application. The voltage of the second data signal line 13 is inconsistent in the first driving state and the second driving state. The voltage of the second data signal line 13 in the first driving state is a high potential voltage, which is consistent with the voltage of the enable signal line 14 in the first driving state. The voltage of the second data signal line 13 in the second driving state is consistent with the output voltage of the reference voltage module 50.

[0055] In short, in the first driving state, the voltage on the second data signal line 13 can be set high or directly set to the reference voltage; in the second driving state, the voltage on the second data signal line 13 is set to the reference voltage.

[0056] In one embodiment, the aforementioned first driving state is a driving effective state, and the second driving state is a driving jump state.

[0057] This application also provides a display device driving method; please refer to [link / reference]. Figure 8 , Figure 8 The display device driving method provided in this application embodiment is applied to a display device, which includes a reference voltage module, a pixel driving circuit, a screen detection circuit, and a source driving chip. The method specifically includes:

[0058] S201: Provides a reference DC voltage signal through the reference voltage module 50.

[0059] Specifically, the reference voltage module 50 can be a display driver IC. The screen detection circuit 40 is connected to the reference voltage pin (IC VREF pin) of the display driver IC through the second data signal line 13, so that it can output a reference DC voltage signal to the second data signal line 13.

[0060] S202: In the first driving state, a high-potential control signal is received through the enable signal line 14, and the screen detection circuit 40 is controlled to disconnect the second data signal line 13 and the first data signal line 12 based on the high-potential control signal. The source driver chip 30 outputs a high-potential voltage signal to the first data signal line 12, and the high-potential voltage signal is transmitted to the pixel driver circuit 20 through the first data signal line 12. Among them, the enable signal line 14 is connected to the second terminal of the screen detection circuit 40, the second data signal line 13 is connected to the third terminal of the screen detection circuit 40 and the reference voltage module 50, and the first data signal line 12 is connected to the first terminal of the screen detection circuit 40, the voltage output terminal of the source driver chip 30, and the pixel driver circuit 20.

[0061] In one embodiment, the screen detection circuit includes a detection transistor, and the method further includes: in a first driving state, controlling the detection transistor to turn off based on a high-potential control signal via an enable signal line; and in a second driving state, controlling the detection transistor to turn on based on a low-potential control signal via an enable signal line, and turning off the output of the source driver chip.

[0062] Specifically, when driving the first state (i.e., driving the active state), a high-potential control signal is received through the enable signal line 14, that is, the voltage on the enable signal line 14 is set high. Since the detection transistor in the screen detection circuit 40 is a P-type transistor, the detection transistor in the screen detection circuit 40 is turned off (i.e., the second data signal line 13 is disconnected from the first data signal line 12). The reference DC voltage signal output by the reference voltage module 50 cannot be transmitted to the first data signal line 12 through the second data signal line 13. At this time, the voltage on the first data signal line 12 is output by the source driver chip 30. The pixel driver circuit 20 receives the high-potential voltage signal input by the first data signal line 12, which drives the pixel unit 10 to emit light, and the screen is displayed and updated normally.

[0063] S203: In the second driving state, a low-potential control signal is received through the enable signal line 14, and the screen detection circuit 40 is controlled to turn on the second data signal line 13 and the first data signal line 12 based on the low-potential control signal. The source driver chip 30 outputs a low-potential voltage signal to the first data signal line 12, and the reference DC voltage signal is output to the first data signal line 12 through the second data signal line 13. The reference DC voltage signal is output to the pixel driving circuit 20 through the first data signal line 12.

[0064] When driving the second state (i.e., driving the jump state), a low-potential control signal is received through the enable signal line 14, that is, the voltage on the enable signal line 14 is set low. Since the detection transistor in the screen detection circuit 40 is a P-type transistor, the detection transistor in the screen detection circuit 40 is turned on (i.e., the second data signal line 13 and the first data signal line 12 are connected). The reference DC voltage signal output by the reference voltage module 50 can be transmitted to the first data signal line 12 through the second data signal line 13. At this time, the voltage on the first data signal line 12 is output by the reference voltage module 50, thereby ensuring the low-frequency display effect. At the same time, the source driver chip 30 outputs a low-potential voltage signal, or can even be turned off directly, thereby saving module power consumption.

[0065] As can be seen from the above embodiments:

[0066] This application provides a display device and a display device driving method. The display device includes a reference voltage module, a pixel driving circuit, a screen detection circuit, and a source driving chip. Specifically, the reference voltage module provides a reference DC voltage signal. The pixel driving circuit is connected to a first data signal line and receives the voltage input from the first data signal line to drive sub-pixels to emit light. A first terminal of the screen detection circuit is connected to the first data signal line, a second terminal of the screen detection circuit is connected to an enable signal line, and a third terminal of the screen detection circuit is connected to the reference voltage module via a second data signal line. The enable signal line receives a high-potential control signal for a first driving state or a low-potential control signal for a second driving state. The screen detection circuit disconnects the second data signal line from the first data signal line when the enable signal line receives a high-potential control signal and connects the second data signal line from the first data signal line when the enable signal line receives a low-potential control signal. The voltage output terminal of the source driving chip is connected to the first data signal line. The source driving chip outputs a high-potential voltage signal in the first driving state and a low-potential voltage signal in the second driving state. This application utilizes a screen detection circuit. In the second driving state, it receives a low-potential control signal through the enable signal line, thereby turning on the second data signal line and the first data signal line. This allows the reference DC voltage signal output by the reference voltage module to be transmitted from the second data signal line to the first data signal line, replacing the original voltage signal of the source driver chip. This enables the source driver chip to output a low-potential voltage signal or even directly shut down the output. Consequently, the power consumption generated by the original source driver chip in the second driving state can be saved, thereby achieving the purpose of reducing module power consumption and improving the image quality of low-frequency displays.

[0067] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0068] The foregoing has provided a detailed description of a display device and a display device driving method provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display device, characterized in that, include: The reference voltage module is used to provide a reference DC voltage signal; A pixel driving circuit, connected to the first data signal line, is used to receive the voltage input from the first data signal line in order to drive the sub-pixel to emit light; A screen detection circuit is provided, wherein a first terminal of the screen detection circuit is connected to a first data signal line, a second terminal of the screen detection circuit is connected to an enable signal line, and a third terminal of the screen detection circuit is connected to a reference voltage module via a second data signal line; wherein the enable signal line is used to receive a high-potential control signal for driving a first state or a low-potential control signal for driving a second state, and the screen detection circuit is used to disconnect the second data signal line from the first data signal line when the enable signal line receives the high-potential control signal, and to connect the second data signal line from the first data signal line when the enable signal line receives the low-potential control signal; A source driver chip, wherein the voltage output terminal of the source driver chip is connected to the first data signal line; wherein the source driver chip is used to output a high-potential voltage signal in the first driving state and to output a low-potential voltage signal in the second driving state.

2. The display device according to claim 1, characterized in that, The screen detection circuit includes a detection transistor, the first electrode of which is connected to the first data signal line, the gate of which is connected to the enable signal line, and the second electrode of which is connected to the second data signal line.

3. The display device according to claim 2, characterized in that, The detection transistor is a P-type transistor.

4. The display device according to claim 1, characterized in that, The display device further includes a control signal input module, the output terminal of which is connected to the enable signal line. The control signal input module is used to input a high-potential control signal to the enable signal line in the first driving state and a low-potential control signal to the enable signal line in the second driving state.

5. The display device according to claim 1, characterized in that, The enable signal line is connected to the voltage output terminal of the source driver chip. The source driver chip is used to input a high-potential control signal to the enable signal line in the first driving state and a low-potential control signal to the enable signal line in the second driving state.

6. The display device according to claim 1, characterized in that, The voltage of the second data signal line is consistent in the first driving state and the second driving state, and is consistent with the output voltage of the reference voltage module.

7. The display device according to claim 1, characterized in that, The voltage of the second data signal line is inconsistent in the first driving state and the second driving state. The voltage of the second data signal line in the first driving state is a high potential voltage, which is consistent with the voltage of the enable signal line in the first driving state. The voltage of the second data signal line in the second driving state is consistent with the output voltage of the reference voltage module.

8. The display device according to any one of claims 1 to 7, characterized in that, The first driving state is the driving effective state, and the second driving state is the driving skip state.

9. A display device driving method, characterized in that, The method is applied to a display device, which includes a reference voltage module, a pixel driving circuit, a screen detection circuit, and a source driving chip; the method includes: The reference voltage module provides a reference DC voltage signal. In the first driving state, a high-potential control signal is received via the enable signal line, and based on the high-potential control signal, the screen detection circuit is controlled to disconnect the second data signal line from the first data signal line. The source driver chip outputs a high-potential voltage signal to the first data signal line, and the high-potential voltage signal is then transmitted to the pixel driving circuit via the first data signal line. The enable signal line is connected to the second terminal of the screen detection circuit, the second data signal line is connected to the third terminal of the screen detection circuit and the reference voltage module, and the first data signal line is connected to the first terminal of the screen detection circuit, the voltage output terminal of the source driver chip, and the pixel driving circuit. In the second driving state, a low-potential control signal is received through the enable signal line, and the screen detection circuit is controlled to turn on the second data signal line and the first data signal line based on the low-potential control signal. The source driver chip outputs a low-potential voltage signal to the first data signal line, the reference DC voltage signal is output to the first data signal line through the second data signal line, and the reference DC voltage signal is output to the pixel driving circuit through the first data signal line.

10. The display device driving method according to claim 9, characterized in that, The screen detection circuit includes a detection transistor, and the method further includes: In the first driving state, the detection transistor is turned off by the enable signal line based on the high potential control signal; in the second driving state, the detection transistor is turned on by the enable signal line based on the low potential control signal, and the output of the source driver chip is turned off.

Images