Display apparatus, control method thereof, storage medium, and electronic apparatus

Abstract

The invention discloses a display device and a control method thereof, a storage medium and an electronic device, and belongs to the technical field of electronic devices. The display equipment comprises pixel circuits, N rows of pixel circuits are arranged along a first direction, and N is a positive integer; the number of the driving circuits is N, and the N driving circuits are electrically connected with the N rows of pixel circuits respectively; wherein one driving circuit is used for sending a scanning signal to one pixel circuit, and the scanning signal is used for indicating the pixel circuit to refresh display content; and N switching devices, each switching device is arranged between one driving circuit and one pixel circuit, and the switching devices are used for switching on and off of signals between the driving circuits and the pixel circuits.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic devices, and specifically relates to a display device and a control method thereof, a storage medium and an electronic device. Background Art

[0002] In the related art, when refreshing the displayed content, a display device using an active matrix / organic light emitting diode (AMOLED) panel needs to refresh each row of pixel circuits row by row. Even if the displayed content has only a small change, all pixel circuits need to be refreshed, resulting in high power consumption for screen refresh. Summary of the invention

[0003] The present application aims to provide a display device and a control method thereof, a storage medium and an electronic device, which can reduce the power consumption of screen refresh.

[0004] In a first aspect, an embodiment of the present application provides a display device, the display device comprising:

[0005] Pixel circuits, N rows of pixel circuits are arranged along a first direction, where N is a positive integer;

[0006] A driving circuit, wherein the number of the driving circuits is N, and the N driving circuits are electrically connected to the N rows of pixel circuits respectively; wherein one driving circuit is used to send a scanning signal to one pixel circuit, and the scanning signal is used to instruct the pixel circuit to refresh the display content;

[0007] N switch devices, each of which is arranged between a driving circuit and a pixel circuit, and is used to switch the signal between the driving circuit and the pixel circuit on and off.

[0008] In a second aspect, an embodiment of the present application provides a control method for a display device, the control method comprising:

[0009] Receiving image data; wherein the image data is used to instruct a first display area of ​​a display device to refresh display content;

[0010] Based on the image data, controlling a first switch device connected to a first pixel circuit to disconnect a signal path between the first pixel circuit and a driving circuit; wherein the first pixel circuit is a pixel circuit in a first display area; and

[0011] The second switch device connected to the second pixel circuit is controlled to connect the electrical loop between the second pixel circuit and the driving circuit; wherein the second pixel circuit is other pixel circuits in the N rows of pixel circuits except the first pixel circuit.

[0012] In a third aspect, an embodiment of the present application provides an electronic device, the electronic device comprising:

[0013] The display device as set forth in the first aspect; and / or

[0014] A processor and a memory, the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the control method of the display device proposed in the second aspect are implemented.

[0015] In a fourth aspect, an embodiment of the present application proposes a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the control method of the second aspect are implemented.

[0016] In an embodiment of the present application, an independent switching device is provided between each row of pixel circuits and the driving circuit, and the switching device can independently control the on-off signal between each row of pixel circuits and the driving circuit. Therefore, when it is necessary to refresh the displayed content, it is only necessary to connect the electrical circuit between the pixel circuits that need to be refreshed and the corresponding driving circuit, and to cut off the electrical circuit between the pixel circuits that do not need to be refreshed and the corresponding driving circuit. In this way, local refresh of only the partial area where the displayed content needs to be refreshed is achieved, thereby reducing the power consumption of screen refresh.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 A circuit diagram of a display device according to some embodiments of the present application is shown;

[0020] Figure 2 A schematic diagram showing display refresh of a display device according to some embodiments of the present application is shown;

[0021] Figure 3 A circuit schematic diagram showing pixel circuits of some embodiments of the present application;

[0022] Figure 4 A flowchart showing a method for controlling a display device according to some embodiments of the present application is shown;

[0023] Figure 5 A structural block diagram of an electronic device according to some embodiments of the present application is shown.

[0024] Reference numerals:

[0025] 100 display device, 102 pixel circuit, 104 driving circuit, 1042 gate switch signal output circuit, 1044 light emitting diode switch signal output circuit, 106 switch device, 1062 sub-switch device, 108 display driver chip. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0027] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Combine the following Figures 1 to 5 A display device and a control method thereof, a storage medium, and an electronic device according to embodiments of the present application are described.

[0031] In some embodiments of the present application, a display device is provided. Figure 1 A circuit diagram of a display device according to some embodiments of the present application is shown. Figure 1 As shown, the display device 100 includes:

[0032] Pixel circuits 102, N rows of pixel circuits 102 are arranged along a first direction, N is a positive integer; driving circuits 104, the number of driving circuits 104 is N, and the N driving circuits 104 are electrically connected to the N rows of pixel circuits 102 respectively; wherein, one driving circuit 104 is used to send a scanning signal to a pixel circuit 102, and the scanning signal is used to instruct the pixel circuit 102 to refresh the display content; N switching devices 106, each switching device 106 is arranged between a driving circuit 104 and a pixel circuit 102, and the switching device 106 is used to switch the signal between the driving circuit 104 and the pixel circuit.

[0033] In the embodiment of the present application, exemplarily, the display device 100 is an AMOLED display device, and the display device 100 includes a pixel circuit 102. Taking the display device 100 as an AMOLED display device as an example, each pixel circuit 102 includes a plurality of thin film transistors (Thin Film Transistor, TFT) and an organic light-emitting diode (Organic Light-Emitting Diode, OLED).

[0034] A complete display device 100 includes N rows of pixel circuits 102 arranged row by row, and N driving circuits 104 respectively connected to the N rows of pixel circuits 102 . Figure 1 The arrow X in FIG. 1 shows a first direction, such as Figure 1 As shown, N rows of pixel circuits 102 are arranged along a first direction, wherein each driving circuit 104 drives a pixel circuit 102 to refresh display content by sending a scanning signal to the pixel circuit 102 connected thereto, thereby refreshing the content of a row of pixels.

[0035] Among them, for conventional AMOLED display devices, each time the display content is refreshed, even if most of the display content remains unchanged and only a small part of the display content changes, all pixel circuits 102 of the entire display panel need to be refreshed, which results in the refresh power consumption of the display device 100 being the maximum power consumption each time it is refreshed.

[0036] In this regard, the present application sets an independent switch device 106 between each row of pixel circuits 102 and the corresponding drive circuit 104, and the switch device 106 can change the signal on and off between the drive circuit 104 and the pixel circuit 102. When a new refresh cycle is reached, the area where the current display content has changed is determined based on the image data of the refreshed image. This area is the display content change, that is, the area where the display content needs to be refreshed. At this time, the complete display area of ​​the display device 100 will be divided into an area where the display content needs to be refreshed and an area where the display content does not need to be refreshed.

[0037] For the pixel circuit 102 located in the area where the display content needs to be refreshed, the switch device 106 connected to the corresponding pixel circuit is controlled to be turned on, so that the scanning signal of the driving circuit 104 can be normally given to the pixel circuit 102, and the pixel circuit 102 refreshes the display content according to the scanning signal. For the area where the display content does not need to be refreshed, the switch device 106 connected to the corresponding pixel circuit is controlled to be turned off, so that the scanning signal of the driving circuit 104 cannot be received by the pixel circuit 102, and the pixel circuit 102 maintains the current display state unchanged, that is, the display content is not refreshed.

[0038] The present application sets an independent switching device 106 between each row of pixel circuits 102 and the driving circuit 104. The switching device 106 can independently control the signal on and off between each row of pixel circuits 102 and the driving circuit 104. Therefore, when it is necessary to refresh the displayed content, it is only necessary to connect the electrical circuit between the pixel circuit 102 whose content needs to be refreshed and the corresponding driving circuit 104, and cut off the electrical circuit between the pixel circuit 102 whose content does not need to be refreshed and the corresponding driving circuit 104. In this way, local refresh of only the partial area where the display content needs to be refreshed is achieved, thereby reducing the power consumption of screen refresh.

[0039] In some embodiments of the present application, the display device 100 also includes: a display driver chip 108, the display driver chip 108 is electrically connected to N switching devices 106, and the display driver chip 108 is used to output a first level signal or a second level signal to each switching device 106 respectively; wherein the first level signal is used to indicate that the switching device 106 connects the signal path between the driving circuit 104 and the pixel circuit; and the second level signal is used to indicate that the switching device 106 disconnects the signal path between the driving circuit 104 and the pixel circuit.

[0040] In the embodiment of the present application, the display device 100 includes a display driver chip 108, the display driver chip 108 includes an electrical frequency signal output port, and each switch device 106 is respectively connected to the corresponding electrical frequency signal output port. The display driver chip 108 can output a corresponding level signal to each switch device 106, including a first level signal or a second level signal.

[0041] When a switch device 106 receives a first level signal, the switch device 106 is turned on, the current electrical circuit is connected, the corresponding signal path between the drive circuit 104 and the pixel circuit 102 is connected, and the scan signal of the drive circuit 104 can be normally transmitted to the pixel circuit 102 .

[0042] When a switch device 106 receives a second level signal, the switch device 106 is turned off, the current circuit is disconnected, the corresponding signal path between the drive circuit 104 and the pixel circuit 102 is cut off, and the scanning signal of the drive circuit 104 cannot be received by the pixel circuit 102. At this time, the pixel circuit 102 will not perform a refresh action.

[0043] Exemplarily, the first level signal is a high level signal, and the second level signal is a low level signal.

[0044] Exemplarily, the first level signal is a low level signal, and the second level signal is a high level signal.

[0045] The present application independently controls the switch device 106 connected to each row of pixel circuits 102 through the display driver chip 108 , thereby independently controlling whether each row of pixel circuits 102 performs a refresh action, thereby achieving partial refresh of the display device 100 .

[0046] In some embodiments of the present application, the display driver chip 108 is also used to: receive image data; wherein the image data is used to instruct the first display area of ​​the display device 100 to refresh the display content; based on the image data, determine M rows of first pixel circuits 102 in N rows of pixel circuits 102; wherein the first pixel circuit 102 is the pixel circuit 102 in the first display area; send a first level signal to the switching device 106 connected to the M rows of first pixel circuits 102; and, send a second level signal to the second pixel circuit 102; wherein the second pixel circuit 102 is the other pixel circuit 102 in the N rows of pixel circuits 102 except the first pixel circuit 102.

[0047] In an embodiment of the present application, the above-mentioned image data is data corresponding to the image content that needs to be displayed in the next frame of the display device 100. Exemplarily, the above-mentioned image data only includes image data in the first display area where the display content needs to be refreshed (i.e., the image content has changed).

[0048] The image data may be data sent from a host controller to the display driver chip 108. Taking the display device 100 as a mobile phone screen as an example, the main controller of the mobile phone sends image data to the display driver chip 108. After receiving the image data, the display driver chip 108 parses the received image data to obtain a first display area. The first display area is a display area where a refresh operation of display content needs to be performed, and other display areas of the display device 100 except the first display area are areas where the display content does not need to be refreshed.

[0049] The display driver chip 108 determines the M rows of first pixel circuits 102 that need to perform a display content refresh operation based on the analysis of the image data. It can be understood that M is a positive integer less than or equal to N. When M is less than N, the display device 100 implements a partial refresh, and when M is equal to N, the display device 100 is refreshed as a whole. When M is equal to 0, the display device 100 is not refreshed.

[0050] Figure 2 A display refresh schematic diagram of a display device of some embodiments of the present application is shown. After determining M rows of first pixel circuits 102, the display driver chip 108 sends a first level signal to the switching device 106 connected to each row of first pixel circuits 102. At this time, the switching device 106 connected to the first pixel circuit 102 is turned on, and the scanning signal sent by the driving circuit 104 is transmitted to each first pixel circuit 102, thereby refreshing the first display area that needs to refresh the display content.

[0051] At the same time, the display driver chip 108 sends a second level signal to the switching devices 106 connected to the other NM second pixel circuits 102 except the first pixel circuit 102. At this time, the switching devices 106 connected to the second pixel circuit 102 are all cut off, and the scanning signal sent by the driving circuit 104 cannot be transmitted to the second pixel circuit 102, that is, other display areas outside the first display area will not be refreshed.

[0052] The present application performs local refresh on the local area where the next frame image changes compared with the current image based on the image data of the next frame image that the display device 100 needs to display, thereby reducing the refresh power consumption of the display device 100.

[0053] In some embodiments of the present application, the driving circuit 104 is an array substrate row driving circuit.

[0054] In this technical solution, the driving circuit 104 is a gate-on-array (GOA) circuit, hereinafter referred to as a GOA circuit. The GOA circuit technology refers to integrating the gate driving circuit 104 on a glass substrate to form a scanning drive for the display panel. The GOA circuit technology can reduce the binding process of external electronic components, thereby reducing the cost of the display device, and has a small size, which is conducive to realizing a narrow-frame or borderless display device.

[0055] In some embodiments of the present application, a driving circuit 104 includes multiple gate switch signal output circuits 1042 and light-emitting diode switch signal output circuits 1044; a switching device 106 includes multiple sub-switch devices 1062, and the multiple sub-switch devices 1062 are respectively connected to the multiple gate switch signal output circuits 1042 and are used to switch the signal between each gate switch signal output circuit and the pixel circuit.

[0056] In the embodiment of the present application, exemplarily, the driving circuit 104 is a GOA circuit, the GOA circuit includes multiple gate switch signal output circuits 1042 and an LED switch signal output circuit, and correspondingly, the switch device 106 includes sub-switch devices 1062 corresponding one-to-one to the multiple gate switch signal output circuits 1042.

[0057] Taking the display device 100 as an AMOLED display device as an example, the pixel circuit 102 of the AMOLED display device includes an organic light emitting diode, wherein the organic light emitting diode is composed of a PN junction, and the N (Negative) type semiconductor with more electrons and the P (Positive) type with more holes have the characteristics of unidirectional conduction and reverse cutoff. When a forward voltage is applied to the light emitting diode, the holes injected from the P region into the N region and the electrons injected from the N region into the P region recombine with the electrons in the N region and the holes in the P region near the PN junction, respectively, to generate spontaneously radiated fluorescence. The energy states of electrons and holes in different semiconductor materials are different. When electrons and holes recombine, the amount of energy released is different. The more energy released, the shorter the wavelength of the emitted light.

[0058] For example, Figure 3 Schematic diagrams of the pixel circuit 102 of some embodiments of the present application are shown. Figure 1 and Figure 3 As shown, each driving circuit 104 includes a plurality of gate switch signal output circuits 1042, which are respectively denoted as P1 GOA, P2 GOA, N1 GOA and N2 GOA, and also includes a diode switch signal output circuit, which is denoted as EM GOA. Figure 1 and Figure 3 The symbols and their functions are shown in Table 1 below:

[0059] Table 1

[0060]

[0061]

[0062] Among them, a sub-switch device 1062 is added between each P1 GOA and the pixel circuit 102, which is recorded as P1MUX. A sub-switch device 1062 is added between each P2 GPA and the pixel circuit 102, which is recorded as P2 MUX. A sub-switch device 1062 is added between each N1 GOA and the pixel circuit 102, which is recorded as N1 MUX. A sub-switch device 1062 is added between each N2 GOA and the pixel circuit 102, which is recorded as N2 MUX.

[0063] The display driver chip 108 can output level signals M1, M2, M3 and M4 respectively. Among them, the gate of the P1 MUX is connected to the signal M1, and the level of the signal M1 is used to control the conduction or cut-off of the P1 MUX. The gate of the P2 MUX is connected to the signal M2, and the level of the signal M2 is used to control the conduction or cut-off of the P2 MUX. The gate of the N1 MUX is connected to the signal M3, and the level of the signal M3 is used to control the conduction or cut-off of the N1 MUX. The gate of the N2 MUX is connected to the signal M4, and the level of the signal M4 is used to control the conduction or cut-off of the N2 MUX.

[0064] By controlling the levels of signal M1, signal M2, signal M3 and signal M4, the opening and closing of P1 MUX, P2 MUX, N1 MUX and N2 MUX are controlled, and whether the P1 scan, P2 scan, N1scan and N2 scan signals corresponding to each row of pixel circuits 102 can be written into the corresponding pixel circuits 102 is controlled, thereby controlling the partial refresh of the screen.

[0065] For example, Figure 2 As shown, the row area that needs to be refreshed, that is, the first display area corresponding to the signals M1, M2, M3 and M4 are at a low level, and the corresponding switching device 106 is turned on, ensuring that the P1 scan, P2 scan, N1 scan and N2 scan signals can be written into the corresponding pixel circuit 102, and the corresponding pixel circuit 102 refreshes the display content.

[0066] The navigation areas that do not need to be refreshed, that is, the signals M1, M2, M3 and M4 corresponding to the display areas other than the first display area are high level, the corresponding switching device 106 is turned off, the P1 scan, P2 scan, N1 scan and N2 scan signals are not written into the corresponding pixel circuit 102, and the corresponding pixel circuit 102 does not refresh the display content.

[0067] For example, for the pixel circuit 102 of the AMOLED display device, N1 scan and P1 scan simultaneously control the writing of the Source voltage. At this time, the above-mentioned signal M1 and signal M2 can be combined into one signal, which does not affect the local refresh function and can reduce the circuit design and the signal output of the driving control chip to a certain extent.

[0068] In some embodiments of the present application, the display driver chip 108 is further used to: receive a switch timing signal; and control the plurality of sub-switch devices 1062 to switch switch states respectively based on the switch timing signal.

[0069] In the embodiments of the present application, Figure 1 and Figure 3 As shown, since an independent sub-switch device 1062 is set for each gate switch signal output circuit 1042, it is possible to enable all timings of controlling pixels, such as enabling one or more of the P1 scan, P2 scan, N1 scan and N2 scan signals, thereby achieving functional debugging of the display device under different conditions.

[0070] Exemplarily, the display driver chip 108 receives a switch timing signal, and the switch timing signal can instruct the display driver chip 108 to perform switch control on the plurality of sub-switch devices 1062 according to a certain switch timing, thereby achieving functional debugging of the display device.

[0071] In some embodiments of the present application, the switch device 106 is a multiplexer switch, and a control gate of the multiplexer switch is electrically connected to the display driver chip 108 .

[0072] In the embodiment of the present application, the switch device 106 is a multiplex switch (Mux) device, the gate of the multiplex switch receives a level signal from the display driver chip 108, and is turned on or off based on the level signal, thereby achieving independent control of whether each row of pixel circuits 102 is refreshed.

[0073] In some embodiments of the present application, a control method for a display device is provided, wherein the display device includes a pixel circuit, a driving circuit and a switching device, wherein the driving circuit is used to send a scanning signal to the pixel circuit, the scanning signal is used to instruct the pixel circuit to refresh the display content, and the switching device is used to switch the signal between the driving circuit and the pixel circuit.

[0074] Figure 4 A flow chart showing a method for controlling a display device according to some embodiments of the present application is shown. Figure 4 As shown, the control method includes:

[0075] Step 402, receiving image data; wherein the image data is used to instruct the first display area of ​​the display device to refresh display content;

[0076] Step 404, based on the image data, controlling a first switch device connected to a first pixel circuit to disconnect a signal path between the first pixel circuit and a driving circuit; wherein the first pixel circuit is a pixel circuit in a first display area;

[0077] Step 406, controlling a second switch device connected to a second pixel circuit to connect an electrical loop between the second pixel circuit and the driving circuit; wherein the second pixel circuit is other pixel circuits in the N rows of pixel circuits except the first pixel circuit.

[0078] In an embodiment of the present application, the display device includes N rows of pixel circuits arranged row by row, and N driving circuits respectively connected to the N rows of pixel circuits. Each driving circuit drives a pixel circuit to refresh the display content by sending a scanning signal to the pixel circuit connected thereto, thereby refreshing the content of a row of pixels.

[0079] An independent switch device is set between each row of pixel circuits and the corresponding drive circuit, and the switch device can change the signal on and off between the drive circuit and the pixel circuit. When a new refresh cycle is reached, the area where the current display content has changed is determined based on the image data of the refreshed image. This area is the area where the display content has changed, that is, the area where the display content needs to be refreshed. At this time, the complete display area of ​​the display device will be divided into an area where the display content needs to be refreshed and an area where the display content does not need to be refreshed.

[0080] For pixel circuits located in the area where the display content needs to be refreshed, the switch devices connected to them are controlled to be turned on, so that the scanning signal of the driving circuit can be normally given to the pixel circuit, and the pixel circuit refreshes the display content according to the scanning signal. For areas where the display content does not need to be refreshed, the switch devices connected to them are controlled to be turned off, so that the scanning signal of the driving circuit cannot be received by the pixel circuit, and the pixel circuit maintains the current display state unchanged, that is, the display content is not refreshed.

[0081] Exemplarily, the image data is data corresponding to the image content to be displayed by the display device in the next frame. Exemplarily, the above image data only includes image data in the first display area where the display content needs to be refreshed (ie, the image content has changed).

[0082] The image data may be data sent by a host controller. Taking the display device as a mobile phone screen as an example, the main controller of the mobile phone sends the image data to the display driver chip. After receiving the image data, the display driver chip parses the received image data to obtain a first display area. The first display area is a display area where a refresh operation of display content needs to be performed, and other display areas of the display device except the first display area are areas where the display content does not need to be refreshed.

[0083] Based on the analysis of the image data, the M rows of first pixel circuits that need to perform a display content refresh operation are determined. It can be understood that M is a positive integer less than or equal to N. When M is less than N, the display device implements a partial refresh, and when M is equal to N, the display device is refreshed as a whole. When M is equal to 0, the display device is not refreshed.

[0084] After determining M rows of first pixels, the switch devices connected to each row of first pixel circuits are controlled to be turned on, and the scanning signal sent by the driving circuit is transmitted to each first pixel circuit, thereby refreshing the first display area that needs to refresh the display content.

[0085] The switch devices connected to the other NM second pixel circuits except the first pixel circuit are controlled to be turned off, and the scanning signal sent by the driving circuit cannot be transmitted to the second pixel circuit, that is, other display areas outside the first display area will not be refreshed.

[0086] The present application sets an independent switching device between each row of pixel circuits and the driving circuit, and the switching device can independently control the signal on and off between each row of pixel circuits and the driving circuit. Therefore, when the display content needs to be refreshed, it is only necessary to connect the electrical circuit between the pixel circuit that needs to be refreshed and the corresponding driving circuit, and cut off the electrical circuit between the pixel circuit that does not need to be refreshed and the corresponding driving circuit. In this way, local refresh of only the partial area where the display content needs to be refreshed is achieved, thereby reducing the power consumption of screen refresh.

[0087] In some embodiments of the present application, the display device also includes a display driver chip; controlling a switching device connected to the first pixel circuit to disconnect a signal path between the first pixel circuit and the driver circuit includes: controlling the display driver chip to send a first level signal to the first switching device; wherein the first level signal is used to indicate that the switching device connects the signal path between the driver circuit and the pixel circuit.

[0088] Controlling the second switch device connected to the second pixel circuit to connect the electrical circuit between the second pixel circuit and the drive circuit includes: controlling the display driver chip to send a second level signal to the second switch device; wherein the second level signal is used to instruct the switch device to connect the signal path between the drive circuit and the pixel circuit.

[0089] In an embodiment of the present application, the display device includes a display driver chip, the display driver chip includes an electrical frequency signal output port, and each switch device is respectively connected to a corresponding electrical frequency signal output port. The display driver can output a corresponding level signal to each switch device, including a first level signal or a second level signal.

[0090] When a switch device receives a first level signal, the switch device is turned on, the current electrical circuit is connected, the signal path between the corresponding drive circuit and the pixel circuit is connected, and the scan signal of the drive circuit can be normally transmitted to the pixel circuit.

[0091] When a switch device receives a second level signal, the switch device is turned off, the current circuit is disconnected, the corresponding signal path between the drive circuit and the pixel circuit is cut off, the scan signal of the drive circuit cannot be received by the pixel circuit, and the pixel circuit will not perform a refresh action.

[0092] After determining M rows of first pixel circuits, the display driver chip sends a first level signal to the switching device connected to each row of first pixel circuits. At this time, the switching device connected to the first pixel circuit is turned on, and the scanning signal sent by the driver circuit is transmitted to each first pixel circuit, thereby refreshing the first display area that needs to refresh the display content.

[0093] At the same time, the display driver chip sends a second level signal to the switching devices connected to the other NM second pixel circuits except the first pixel circuit. At this time, the switching devices connected to the second pixel circuits are all cut off, and the scanning signal sent by the driving circuit cannot be transmitted to the second pixel circuit, that is, other display areas outside the first display area will not be refreshed.

[0094] The present application performs local refresh on a local area where the next frame image changes compared with the current image based on the image data of the next frame image that the display device needs to display, thereby reducing the refresh power consumption of the display device.

[0095] In some embodiments of the present application, the control method further includes: receiving a switch timing signal; and controlling a plurality of sub-switch devices to switch switch states respectively based on the switch timing signal.

[0096] In the embodiment of the present application, since an independent sub-switch device is set for each gate switch signal output circuit, it is possible to enable all timings of controlling the pixels, such as enabling one or more of the P1 scan, P2 scan, N1scan and N2 scan signals, thereby achieving functional debugging of the display device under different conditions.

[0097] Exemplarily, the display driver chip receives a switch timing signal, and the switch timing signal can instruct the display driver chip to perform switch control on a plurality of sub-switch devices according to a certain switch timing, thereby achieving functional debugging of the display device.

[0098] Optionally, an embodiment of the present application further provides an electronic device, Figure 5 A structural block diagram of an electronic device according to an embodiment of the present application is shown. Figure 5 As shown, the electronic device 500 includes a processor 502, a memory 504, and a program or instruction stored in the memory 504 and executable on the processor 502. When the program or instruction is executed by the processor 502, each process of the above-mentioned method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0099] Exemplarily, the electronic device 500 also includes the display device 100 as proposed in any of the above embodiments, and therefore also includes all the beneficial effects of the display device 100 as proposed in any of the above embodiments, which will not be described again here to avoid repetition.

[0100] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0101] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display device, characterized in that: The display device comprises: Pixel circuits, wherein N rows of pixel circuits are arranged along a first direction, and N is a positive integer; A driving circuit, wherein the number of the driving circuits is N, and the N driving circuits are electrically connected to N rows of pixel circuits respectively; wherein one of the driving circuits is used to send a scanning signal to one of the pixel circuits, and the scanning signal is used to instruct the pixel circuit to refresh the display content; N switching devices, each of which is arranged between one of the driving circuits and one of the pixel circuits, and is used to switch on and off the signal between the driving circuit and the pixel circuit.

2. The display device according to claim 1, characterized in that The display device further includes: A display driver chip, the display driver chip is electrically connected to the N switching devices, and the display driver chip is used to output a first level signal or a second level signal to each of the switching devices respectively; The first level signal is used to instruct the switch device to connect the signal path between the drive circuit and the pixel circuit; the second level signal is used to instruct the switch device to disconnect the signal path between the drive circuit and the pixel circuit.

3. The display device according to claim 2, characterized in that The display driver chip is also used for: Receiving image data; wherein the image data is used to instruct the first display area of ​​the display device to refresh display content; Based on the image data, determining M rows of first pixel circuits in the N rows of pixel circuits; wherein the first pixel circuits are pixel circuits within the first display area, and M is a positive integer less than or equal to N; The first level signal is sent to the switch device connected to the M rows of the first pixel circuits; and the second level signal is sent to the second pixel circuit; wherein the second pixel circuit is the other pixel circuit in the N rows of the pixel circuits except the first pixel circuit.

4. The display device according to any one of claims 1 to 3, characterized in that: The driving circuit is an array substrate row driving circuit.

5. The display device according to claim 2 or 3, characterized in that: One of the driving circuits includes a plurality of gate switch signal output circuits and a light emitting diode switch signal output circuit; One of the switch devices includes a plurality of sub-switch devices, and the plurality of sub-switch devices are respectively connected to a plurality of the gate switch signal output circuits and are used to switch the signal on and off between each of the gate switch signal output circuits and the pixel circuit.

6. The display device according to claim 5, characterized in that The display driver chip is also used for: Receiving switch timing signal; Based on the switch timing signal, the plurality of sub-switch devices are controlled to switch switch states respectively.

7. The display device according to claim 2 or 3, characterized in that: The switch device is a multiplexer switch, and a control gate of the multiplexer switch is electrically connected to the display driver chip.

8. A method for controlling a display device, characterized in that: The display device comprises a pixel circuit, a driving circuit and a switching device, wherein the driving circuit is used to send a scanning signal to the pixel circuit, the scanning signal is used to instruct the pixel circuit to refresh the display content, and the switching device is used to switch the signal between the driving circuit and the pixel circuit; the control method comprises: Receiving image data; wherein the image data is used to instruct the first display area of ​​the display device to refresh display content; Based on the image data, controlling a first switch device connected to a first pixel circuit to disconnect a signal path between the first pixel circuit and the driving circuit; wherein the first pixel circuit is a pixel circuit within the first display area; and The second switch device connected to the second pixel circuit is controlled to connect the electrical circuit between the second pixel circuit and the driving circuit; wherein the second pixel circuit is the other pixel circuit in the N rows of pixel circuits except the first pixel circuit.

9. The control method according to claim 8, characterized in that: The display device also includes a display driver chip; The controlling the first switch device connected to the first pixel circuit to disconnect the signal path between the first pixel circuit and the driving circuit comprises: Controlling the display driver chip to send a first level signal to the first switch device; wherein the first level signal is used to instruct the switch device to connect a signal path between the drive circuit and the pixel circuit; The controlling the second switch device connected to the second pixel circuit to connect the electrical circuit between the second pixel circuit and the driving circuit comprises: The display driver chip is controlled to send a second level signal to the second switch device; wherein the second level signal is used to instruct the switch device to connect the signal path between the drive circuit and the pixel circuit.

10. The control method according to claim 8, characterized in that: One of the switch devices includes a plurality of sub-switch devices, and the control method further includes: Receiving switch timing signal; Based on the switch timing signal, the plurality of sub-switch devices are controlled to switch switch states respectively.

11. An electronic device, characterized in that: The electronic device comprises: The display device according to any one of claims 1 to 7; and / or A processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the control method of the display device as described in any one of claims 8 to 10 are implemented.

12. A readable storage medium having a program or instruction stored thereon, characterized in that: When the program or instruction is executed by a processor, the steps of the method for controlling a display device according to any one of claims 8 to 10 are implemented.

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