Display module and electronic equipment

Abstract

The invention discloses a display module and electronic equipment, and relates to the technical field of electronics. The display module provided by the invention comprises a pixel circuit, a driving circuit and a switching device, wherein the driving circuit is connected with the pixel circuit through the switching device; the switching device is used for being in a conducting state under the condition that the switching device receives a target signal; wherein the target signal is used for indicating that the light sensor is in a closed state; and the driving circuit is used for driving the pixel circuit to be in a working state when the switching device is in a conducting state.

Description

Technical Field

[0001] The present application belongs to the field of electronic technology, and specifically relates to a display module and an electronic device. Background Art

[0002] In the intelligent anti-mistouch scenario, the light-emitting module or infrared light sensor module of the smart terminal continues to work when the screen is on, emitting light to the outside of the screen to obtain information about the approach of external objects, thereby realizing the automatic screen-off function when the object approaches.

[0003] However, in related technologies, when light from a light-emitting module or infrared sensor module continuously shines on the panel material of a smart terminal's display module, the thermal effect causes the capacitance of the storage capacitor in the pixel circuit of the display module to change within a short period of time. This change in the capacitance of the storage capacitor causes the gate potential of the driving transistor in the pixel circuit to change, which in turn causes the current of the light-emitting element in the pixel circuit to change. This change in the current of the light-emitting element affects the display brightness, resulting in abnormal light spots or dark spots on the display module, thus affecting the display effect. Summary of the Invention

[0004] The embodiments of the present application provide a display module and an electronic device to solve the technical problem in the related art that abnormal light spots or dark spots appear on the display module due to the light-emitting module or the infrared sensor module, thereby affecting the display effect.

[0005] In a first aspect, an embodiment of the present application provides a display module, comprising: a pixel circuit, a driving circuit, and a switching device, wherein the driving circuit is connected to the pixel circuit via the switching device; The switch device is configured to be in an on state when the switch device receives a target signal; wherein the target signal is configured to indicate that the light sensor is in an off state; The driving circuit is used to drive the pixel circuit to be in an operating state when the switching device is in an on state.

[0006] In a second aspect, an embodiment of the present application provides an electronic device, comprising: a display module as in the first aspect.

[0007] In an embodiment of the present application, a display module includes a pixel circuit, a driver circuit, and a switching device. The driver circuit is connected to the pixel circuit via the switching device. The switching device is configured to be turned on when the switching device receives a target signal. The target signal indicates that the light sensor is in the off state. The driver circuit is configured to drive the pixel circuit into an active state when the switching device is in the on state. Thus, because the driver circuit drives the pixel circuit into an active state when the light sensor is in the off state, the influence of light emitted by the light sensor on the current of the light-emitting element of the pixel circuit is avoided, thereby preventing abnormal light spots or dark spots from appearing on the display module and improving the display quality of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 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: Figure 1 is a schematic diagram of a pixel circuit provided in the related art; Figure 2 is a schematic diagram of a display module provided in some embodiments of the present application; Figure 3 is a schematic diagram of a display module provided in some embodiments of the present application; Figure 4A is a schematic diagram of a display module provided in some embodiments of the present application; Figure 4B is a schematic diagram of a display module provided in some embodiments of the present application; Figure 4C is a schematic diagram of a display module provided in some embodiments of the present application; Figure 5 is a schematic diagram of a display module provided in some embodiments of the present application; Figure 6 is a schematic diagram of a display module provided in some embodiments of the present application; Figure 7 is a schematic diagram of a display module provided in some embodiments of the present application; Figure 8 is a schematic diagram of a display module provided in some embodiments of the present application; Figure 9 is a schematic diagram of an electronic device provided in some embodiments of the present application.

[0009] Description of reference numerals: 10 - display module; 100 - pixel circuit; D1 - light-emitting element; Cst0 - storage capacitor; 110 - light-emitting control circuit; T1 - driving transistor; T2 - third switch tube; T3 - fourth switch tube; T4 - first reset transistor; T5 - first switch tube; T6 - second switch tube; T7 - ​​second reset transistor; A - gate node of driving transistor T1; ELVDD - positive voltage terminal; ELVSS - negative voltage terminal; V1 - first voltage terminal; V2 - second voltage terminal; V int1 - The third voltage terminal; V int2 -Fourth voltage terminal; 200-driving circuit; 210-luminescent driving circuit; EM-luminescent control signal terminal; 220-display driving circuit; D-display data input terminal; 230-scanning driving circuit; S1-first scanning signal terminal; S2-second scanning signal terminal; S3-third scanning signal terminal; 240-power management circuit; 300-switching device; TE-control signal terminal; 310-first switching element; T9-first transistor; 311-first AND gate; 320-second switching element; T8-second transistor; 321-second AND gate; 330-third switching element; T10-third transistor; 331-third AND gate; 400-electronic device. DETAILED DESCRIPTION

[0010] The embodiments of the present application will be described in detail below. 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 are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0011] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0012] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connected" should be understood in a broad sense. For example, they can refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0013] At present, in the display modules of terminal devices such as mobile phones and tablets, the relevant technologies generally adopt Figure 1 The 7T1C pixel circuit shown is used as a driving circuit for the luminous pixel. Figure 1 As shown in FIG, the pixel circuit may include a light-emitting pixel located in the nth row and a driving circuit for the light-emitting pixel. Figure 1 The light-emitting element D1 is a light-emitting pixel and has parasitic capacitance. The driving circuit includes seven thin-film transistors (TFTs) and one storage capacitor. Cst0 is the storage capacitor, T1 is the driving transistor, T2 is the switch for displaying data signals, T3 is the switch for threshold voltage compensation of T1, T4 is the switch for initializing the storage capacitor Cst0, T5 is the switch for positive voltage ELVDD, T6 is the switch for negative voltage ELVSS, and T7 is the switch for initializing the light-emitting element D1. Point A is the gate node of T1. T1, T2, T3, T4, T5, T6, and T7 can be PMOS or NMOS transistors.

[0014] Among them, reference Figure 1 , the potential at point A is V A It is used to control the gate of T1 tube. The first scanning signal output by S1 is used to control the gates of T2 and T3 tubes. The second scanning signal output by S2 is used to control the gate of T4 tube. The third scanning signal output by S3 is used to control the gate of T7 tube. D is the display data signal terminal. V int1 is the initialization voltage of the storage capacitor Cst0, V int2 is the initialization voltage of the light emitting element D1, ELVDD is the positive electrode voltage of the light emitting element D1, ELVSS is the negative electrode voltage of the light emitting element D1, and EM is the light emitting control signal used to control the gates of the T5 and T6 tubes.

[0015] Figure 1 The workflow of the pixel circuit shown in one frame is divided into the following four time periods: During the t1 period, the second scanning signal output from the S2 terminal is used to turn on the T4 tube, and the initialization voltage V int1 Set the potential at point A to V A Adjust to V int1 The storage capacitor Cst0 is initialized to prevent the residual storage voltage of the previous frame in the storage capacitor Cst0 from affecting the display of the next frame of data.

[0016] During the t2 period, the first scanning signal outputted from the S1 terminal is used to turn on the T2 and T3 transistors. Turning on the T2 transistor causes the display data signal of the current row to be written, that is, the potential V A Set to Voltage. At this time, the potential at point A is V A In the last time period t1, it is initialized to V int1 Voltage, V int1 The voltage keeps T1 on, and the first scanning signal output from S1 turns on T2 and T3. The potential at point A is V A Can be charged to Voltage, at this time the storage capacitor Cst0 is in a charging state, and the voltage stored in the storage capacitor Cst0 can be recorded as .

[0017] During the t3 period, the third scanning signal outputted from the S3 terminal is used to turn on the T7 tube, and the anode potential of the light-emitting element D1 will be initialized to V int2 voltage, that is, the parasitic capacitance of the light emitting element D1 is reset (ie, initialized), to prevent the residual storage voltage in the parasitic capacitance of the light emitting element D1 from affecting the display of the next frame of data.

[0018] During the t4 period, the light control signal outputted from the EM terminal is used to turn on the T5 and T6 tubes. At this time, the voltage stored in the storage capacitor Cst0 is V Data voltage, the storage capacitor Cst0 enters the discharge state, V Data The voltage keeps the T1 transistor on. At this time, the output current of the T1 transistor flows through the light-emitting element D1, making the light-emitting element D1 in a light-emitting state.

[0019] It should be noted that in the multiple pixel circuits of the display module, the positive voltage terminal ELVDD and the negative voltage terminal ELVSS are shared, and due to the consistency problem of the MOS tube, the turn-on voltage V GS There are differences, resulting in uneven brightness of multiple light-emitting elements. In order to solve this problem, a storage capacitor Cst0 is set in the pixel circuit. During the t2 period, the storage capacitor Cst0 enters the charging state and displays the data voltage V Data First, it is stored in the storage capacitor Cst0. In the t4 period, the storage capacitor Cst0 is discharged to release V Data The voltage keeps the T1 tube turned on, making the light-emitting element D1 emit light, ensuring that the brightness of each light-emitting element D1 is consistent.

[0020] The applicant noted that in the related art, in the intelligent anti-false touch scenario, the infrared light sensor of the smart terminal continues to work when the screen is on, emitting infrared light signals to the outside of the screen to obtain information about the proximity of external objects, thereby realizing the automatic screen-off function. However, for the pixel circuit on the corresponding emission area of ​​the infrared sensor, when the infrared light continues to irradiate the panel material of the display module, the capacitance value of the storage capacitor Cst0 in the pixel circuit changes in a short period of time due to the thermal effect, and the capacitance value of the storage capacitor Cst0 decreases. According to V=Q / C, due to the decrease in capacitance value, the potential V at point A decreases. A changes, so that the conduction voltage V GS The change causes the on-resistance of the T1 tube to change when it is turned on, and then the current of the light-emitting element D1 changes accordingly, affecting the brightness of the light-emitting element D1, causing abnormal light spots or dark spots, thereby affecting the uniformity of the display brightness.

[0021] For example, during the time period t2, when the storage capacitor Cst0 is in a charging state and the storage capacitor Cst0 is not affected by infrared light, the gate potential V A Can be charged to Voltage, that is, After the storage capacitor Cst0 is affected by infrared light and its capacitance changes, the thermal effect causes the capacitance of the storage capacitor Cst0 to change from Change to According to V=Q / C, as the capacitance value decreases, the gate potential V A Changes to , , where the voltage increment of the storage capacitor Cst0 is Since the current of the light emitting element D1 changes with the gate potential V A , affecting the brightness of the light-emitting element D1, resulting in abnormal light spots.

[0022] Based on this, the display module provided by the embodiment of the present application has a switch device disposed between the pixel circuit and the driver circuit. The switch device is turned on when receiving a target signal indicating that the light sensor is in the off state. Thus, the driver circuit drives the pixel circuit into an active state when the switch device is turned on. Thus, because the driver circuit drives the pixel circuit into an active state when the light sensor is in the off state, the operating time of the light sensor and the pixel circuit are staggered, thereby preventing the light emitted by the light sensor from affecting the current of the light-emitting element of the pixel circuit. This prevents abnormal light spots or dark spots from appearing on the display module, thereby improving the display quality of the display module.

[0023] The display module and electronic device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] like Figure 2 As shown, an embodiment of the present application provides a display module 10, which may include: a pixel circuit 100, a driving circuit 200 and a switching device 300, wherein the driving circuit 200 is connected to the pixel circuit 100 via the switching device 300; The switch device 300 is configured to be in an on state when the switch device 300 receives a target signal; wherein the target signal is configured to indicate that the light sensor is in an off state; The driving circuit 200 is used to drive the pixel circuit 100 to be in an operating state when the switching device 300 is in an on state.

[0025] In the embodiments of the present application, the target signal may be a signal generated by a processor of the electronic device. For example, the target signal may be a signal generated by the processor and output to the light sensor to control the emission enable signal of the light sensor. The target signal may also be a signal fed back by the light sensor. For example, the target signal may be an indication signal fed back by the light sensor to the electronic device to indicate that the light sensor is in the off state. The present application does not impose any specific restrictions on the source of the target signal.

[0026] In the embodiment of the present application, the target signal is used to turn on the switch device 300 when the light sensor is in the off state. For example, the target signal can be a pulse-width modulated (PWM) signal. When the target signal is at a high level, the light sensor is in the off state and the switch device 300 is in the on state. When the target signal is at a low level, the light sensor is in the on state and the switch device 300 is in the off state. The target signal thus staggers the operating time of the light sensor and the pixel circuit, preventing the light emitted by the light sensor from affecting the current of the pixel circuit's light-emitting element.

[0027] It should be pointed out that, in order to address the problem in the related art that the light emitted by the light-emitting module or the infrared sensor module (light sensor) continuously irradiates the display module, causing abnormal light spots or dark spots to appear on the display module, thereby affecting the display effect, the embodiment of the present application sets a switching device 300 between the pixel circuit 100 and the driving circuit 200. The switching device 300 is in the on state when it receives a target signal for indicating that the light sensor is in the off state, so that the driving circuit 200 drives the pixel circuit 100 to be in the working state when the switching device 300 is in the on state.

[0028] In this way, since the driving circuit 200 drives the pixel circuit 100 to be in the working state when the light sensor is in the off state, the influence of the light emitted by the light sensor on the current of the light-emitting element of the pixel circuit 100 is avoided, thereby avoiding the appearance of abnormal light spots or dark spots on the display module 10, and improving the display effect of the display module 10.

[0029] In some embodiments of the present application, Figure 2 As shown, in order to drive the pixel circuit 100 to work when the light sensor is in the off state, in the display module 10 provided in the embodiment of the present application, the first end of the switching device 300 is connected to the control signal end TE, the second end of the switching device 300 is connected to the driving circuit 200, and the third end of the switching device 300 is connected to the pixel circuit 100.

[0030] The first end, the second end and the third end of the switch device 300 may be a control end, an input end and an output end, respectively.

[0031] The first terminal of the switch device 300 is connected to the control signal terminal TE, and is used to receive a target signal from the control signal terminal TE.

[0032] The second end of the switch device 300 is connected to the driving circuit 200 for inputting a driving signal from the driving circuit 200 .

[0033] The third terminal of the switch device 300 is connected to the pixel circuit 100 , and is configured to output a driving signal from the driving circuit 200 to the pixel circuit 100 when the switch device 300 is in an on state.

[0034] In this way, when the first end of the switching device 300 receives the target signal output by the control signal end TE, the second end of the switching device 300 and the third end of the switching device 300 are connected, so that the switching device 300 is in the on state, and then the driving circuit 200 drives the pixel circuit 100 to be in the working state when the switching device 300 is in the on state, thereby realizing driving the pixel circuit 100 to work when the light sensor is in the off state.

[0035] The display module provided in the embodiment of the present application is described below with reference to the specific structure of the pixel circuit.

[0036] In some embodiments of the present application, in order to realize driving the pixel circuit 100 to emit light when the light sensor is in the off state, as shown in FIG. Figure 3 As shown, in the display module 10 provided in the embodiment of the present application, the pixel circuit 100 may include a light emitting control circuit 110 , the driving circuit 200 may include a light emitting driving circuit 210 , and the switching device 300 may include a first switching element 310 ; A first end of the first switch element 310 is connected to the control signal terminal TE, a second end of the first switch element 310 is connected to the light control signal terminal EM of the light driving circuit 210, and a third end of the first switch element 310 is connected to the light control circuit 110; The first switch element 310 is configured to be in a conducting state when the first switch element 310 receives a target signal; The pixel circuit 100 includes a light emitting element D1 . When the first switch element 310 is in an on state, the light emitting control circuit 110 is configured to drive the light emitting element D1 to emit light.

[0037] The pixel circuit 100 further includes a light emitting element D1 ; the light emitting driving circuit 210 is configured to drive the light emitting element D1 into a light emitting state under the control of a light emitting control signal outputted from the light emitting control signal terminal EM.

[0038] The first end, the second end and the third end of the first switch element 310 may be a control end, an input end and an output end, respectively.

[0039] The first end of the first switch element 310 is connected to the control signal end TE, and is used to receive the target signal from the control signal end TE.

[0040] The second end of the first switch element 310 is connected to the light-emitting control signal end EM of the light-emitting drive circuit 210 , and is used to input the light-emitting drive signal from the light-emitting control signal end EM.

[0041] The third terminal of the first switch element 310 is connected to the light emitting control circuit 110 , and is used to output the light emitting driving signal from the light emitting control signal terminal EM to the light emitting control circuit 110 when the first switch element 310 is in the on state.

[0042] In this way, when the first end of the first switching element 310 receives the target signal output by the control signal end TE, the second end of the first switching element 310 and the third end of the first switching element 310 are connected, so that the first switching element 310 is in the on state, and then the light-emitting driving circuit 210 drives the light-emitting control circuit 110 when the first switching element 310 is in the on state, so that the light-emitting driving circuit 210 drives the light-emitting element D1 to enter the light-emitting state under the control of the light-emitting control signal output by the light-emitting driving circuit 210, thereby realizing driving the pixel circuit 100 to emit light when the light sensor is in the off state.

[0043] For example, in some embodiments of the present application, in order to drive the light emitting element D1 into a light emitting state, as shown in FIG. Figure 4A 、 Figure 4B or Figure 4CAs shown, in the display module 10 provided in the embodiment of the present application, the light control circuit 110 may include a driving transistor T1, a first switch tube T5, and a second switch tube T6; the first end of the driving transistor T1 is connected to the second end of the first switch tube T5, and the first end of the first switch tube T5 is connected to the first voltage terminal V1; the second end of the driving transistor T1 is connected to the first end of the second switch tube T6, and the second end of the second switch tube T6 is connected to the light emitting element D1, and the light emitting element D1 is connected to the second voltage terminal V2; The light emitting control signal terminal EM of the light emitting driving circuit 210 is connected to the third terminal of the first switch tube T5 and the third terminal of the second switch tube T6 respectively through the first switch element 310; The third end of the first switch tube T5 is the gate of the first switch tube T5; the third end of the second switch tube T6 is the gate of the second switch tube T6; When the first switch element 310 is in the on state, the light driving circuit 210 is used to turn on the first switch tube T5 and the second switch tube T6 so that the light emitting element D1 emits light under the drive of the first voltage end V1.

[0044] The pixel circuit 100 further includes a storage capacitor Cst0 , which is connected to the third terminal of the driving transistor T1 . The storage capacitor Cst0 is used to turn on the driving transistor T1 .

[0045] In the embodiment of the present application, the light-emitting element D1 can be an organic light-emitting diode (OLED) or other types of light-emitting diodes. The light-emitting diode can be a millimeter-level light-emitting diode or a micron-level light-emitting diode. The light-emitting diode can be one light-emitting diode or two light-emitting diodes, and so on. The present application does not limit the type, size, and number of the light-emitting element.

[0046] In the embodiments of the present application, thin-film transistors (TFTs), such as the driving transistor T1, the first switching transistor T5, and the second switching transistor T6, can comprise NMOS or PMOS transistors, without limitation in this application. The first terminal of the TFT can be either a source or a drain, the second terminal of the TFT can be the other of the source or the drain, and the third terminal of the TFT can be a gate. For example, if the TFT comprises an NMOS transistor, the first terminal of the TFT can be the drain, and the second terminal of the TFT can be the source. For another example, if the TFT comprises a PMOS transistor, the first terminal of the TFT can be the source, and the second terminal of the TFT can be the drain.

[0047] In the embodiment of the present application, for the driving transistor T1, during the time periods t1 and t2, the initialization voltage V of the storage capacitor Cst0 isint1 Keep the driving transistor T1 turned on; in the time period t3 and t4, the storage voltage V Data Keep the driving transistor T1 turned on. int1 and storage voltage V Data The voltage value of t1 is different, and correspondingly, the on-resistance of the driving transistor T1 in the time period t1 and t2 is different from the on-resistance of the driving transistor T1 in the time period t3 and t4.

[0048] Thus, when the light sensor is off, the first switch element 310 is on. When the first switch element 310 is on, the EM terminal of the light-emitting driver circuit 210 outputs a light-emission control signal to turn on the first and second switches T5 and T6. Simultaneously, the storage capacitor Cst0 enters a discharge state to keep the driver transistor T1 on. At this point, the output current of the driver transistor T1 flows through the light-emitting element D1, causing it to emit light. This drives the pixel circuit 100 to emit light even when the light sensor is off.

[0049] In some embodiments of the present application, the first switch element 310 may have various implementations, such as Figure 4A 、 Figure 4B or Figure 4C As shown, the first switch element 310 may include any one of a first transistor T9 and a first AND gate 311 .

[0050] For example, Figure 4A or Figure 4C As shown, in the case where the first switching element 310 includes a first transistor T9, a first end of the first transistor T9 is connected to the light-emitting control signal end EM of the light-emitting driving circuit 210, a second end of the first transistor T9 is connected to the third end of the first switching tube T5 and the third end of the second switching tube T6 respectively, and a third end of the first transistor T9 is connected to the control signal end TE; wherein the third end of the first transistor T9 is the gate of the first transistor T9.

[0051] In the embodiment of the present application, the first transistor T9 may include an NMOS transistor or a PMOS transistor, and the present application does not limit this. The first end of the first transistor T9 may be one of a source and a drain, the second end of the first transistor T9 may be the other of a source and a drain, and the third end of the first transistor T9 may be a gate. For example, when the first transistor T9 includes an NMOS transistor, the first end of the first transistor T9 may be a drain, and the second end of the first transistor T9 may be a source. For another example, when the first transistor T9 includes a PMOS transistor, the first end of the first transistor T9 may be a source, and the second end of the first transistor T9 may be a drain.

[0052] Thus, when the gate of the first transistor T9 receives a target signal indicating that the light sensor is in the off state, the first transistor T9 is turned on. When the first transistor T9 is in the on state, the EM terminal of the light driving circuit 210 outputs a light control signal to turn on the first switch transistor T5 and the second switch transistor T6. Simultaneously, the storage capacitor Cst0 enters a discharge state to keep the driving transistor T1 on. At this time, the output current of the driving transistor T1 flows through the light emitting element D1, causing the light emitting element D1 to be in the light emitting state, thereby driving the pixel circuit 100 to emit light when the light sensor is in the off state.

[0053] For example, Figure 4B As shown, in the case where the first switching element 310 includes a first AND gate 311, a first input terminal of the first AND gate 311 is connected to the control signal terminal TE, a second input terminal of the first AND gate 311 is connected to the light-emitting control signal terminal EM of the light-emitting driving circuit 210, and an output terminal of the first AND gate 311 is connected to the third terminal of the first switching tube T5 and the third terminal of the second switching tube T6.

[0054] Thus, in the embodiment of the present application, taking the example of a target signal being high indicating that the light sensor is in the off state, the first input terminal of the first AND gate 311 receives a target signal from the control signal terminal TE at a high level, and the second input terminal of the first AND gate 311 receives a light control signal from the light control signal terminal EM of the light driving circuit 210 at a high level. In this case, the output terminal of the first AND gate 311 outputs a high-level light control signal to the gates of the first switch transistor T5 and the second switch transistor T6, turning on the first switch transistor T5 and the second switch transistor T6. At the same time, the storage capacitor Cst0 enters a discharge state to keep the driving transistor T1 on. At this time, the output current of the driving transistor T1 flows through the light-emitting element D1, causing the light-emitting element D1 to be in the light-emitting state, thereby driving the pixel circuit 100 to emit light when the light sensor is in the off state.

[0055] In some embodiments of the present application, in order to realize driving the pixel circuit 100 to write display data when the light sensor is in the off state, as shown in FIG. Figure 3 As shown, in the display module 10 provided in the embodiment of the present application, the driving circuit 200 includes a display driving circuit 220 , and the switching device 300 further includes a second switching element 320 ; A first end of the second switch element 320 is connected to the control signal terminal TE, a second end of the second switch element 320 is connected to the display data input terminal D of the display driving circuit 220, and a third end of the second switch element 320 is connected to the light emitting control circuit 110; The second switch element 320 is configured to be in a conducting state when the second switch element 320 receives a target signal; The pixel circuit 100 further includes a storage capacitor Cst0 . When the second switch element 320 is in an on state, the display driving circuit 220 is configured to write a display data signal into the storage capacitor Cst0 .

[0056] The first end, the second end and the third end of the second switch element 320 may be a control end, an input end and an output end, respectively.

[0057] The first end of the second switch element 320 is connected to the control signal end TE, and is used to receive the target signal from the control signal end TE.

[0058] The second end of the second switch element 320 is connected to the display data input terminal D of the display driving circuit 220 , and is used to input the display data signal from the display data input terminal D.

[0059] The third end of the second switch element 320 is connected to the light emitting control circuit 110 , and is configured to output the display data signal from the display data input end D to the light emitting control circuit 110 when the second switch element 320 is in the on state.

[0060] In this way, when the first end of the second switching element 320 receives the target signal output by the control signal end TE for indicating that the light sensor is in the off state, the second end of the second switching element 320 and the third end of the second switching element 320 are connected, so that the second switching element 320 is in the on state, and then the display driving circuit 220 writes the display data signal into the light-emitting control circuit 110 when the second switching element 320 is in the on state, thereby driving the pixel circuit 100 to write the display data when the light sensor is in the off state.

[0061] For example, in some embodiments of the present application, in order to realize writing the display data signal into the light emitting control circuit 110, as shown in FIG. Figure 4A 、 Figure 4B or Figure 4C As shown, in the display module 10 provided in the embodiment of the present application, the driving circuit 200 further includes a scan driving circuit 230; the pixel circuit 100 includes a light emitting control circuit 110, and the light emitting control circuit 110 includes a driving transistor T1, a third switch tube T2, and a fourth switch tube T3; A first end of the third switch tube T2 is connected to the display data input terminal D of the display driving circuit 220 through the second switch element 320, a second end of the third switch tube T2 is connected to the first end of the driving transistor T1, and a third end of the third switch tube T2 is connected to the first scan signal terminal S1 of the scan driving circuit 230; A first terminal of the fourth switch tube T3 is connected to the second terminal of the driving transistor T1, a second terminal of the fourth switch tube T3 is connected to the third terminal of the driving transistor T1, and a third terminal of the fourth switch tube T3 is connected to the first scan signal terminal S1 of the scan driving circuit 230; A first terminal of the storage capacitor Cst0 is connected to the first voltage terminal V1 , and a second terminal of the storage capacitor Cst0 is connected to the third terminal of the driving transistor T1 ; The third terminal of the driving transistor T1 is the gate of the driving transistor T1; the third terminal of the third switch tube T2 is the gate of the third switch tube T2; the third terminal of the fourth switch tube T3 is the gate of the fourth switch tube T3; When the second switch element 320 is in the on state, the scan driving circuit 230 is used to turn on the third switch tube T2 and the fourth switch tube T3 , and the display driving circuit 220 is used to write the display data signal into the storage capacitor Cst0 .

[0062] In the embodiments of the present application, thin-film transistors (TFTs), such as the driving transistor T1, the third switching transistor T2, and the fourth switching transistor T3, may comprise NMOS transistors or PMOS transistors, and this application does not limit this. The first terminal of the TFT may be one of a source and a drain, the second terminal of the TFT may be the other of the source and the drain, and the third terminal of the TFT may be a gate. For example, if the TFT comprises an NMOS transistor, the first terminal of the TFT may be a drain, and the second terminal of the TFT may be a source. For another example, if the TFT comprises a PMOS transistor, the first terminal of the TFT may be a source, and the second terminal of the TFT may be a drain.

[0063] Thus, when the light sensor is in the off state, the second switch element 320 is in the on state. When the second switch element 320 is in the on state, the first scan signal terminal S1 of the scan driving circuit 230 outputs the first row scan signal to the gates of the third switch tube T2 and the fourth switch tube T3, turning on the third switch tube T2 and the fourth switch tube T3, so that the display data signal of the current row is written into the pixel circuit 100, that is, the potential V at point A is set to 0. A Set to Voltage. Thus, the potential at point A is V A Can be charged to Voltage, at this time the storage capacitor Cst0 is in a charging state, and the voltage stored in the storage capacitor Cst0 can be recorded as .

[0064] In some embodiments of the present application, the second switch element 320 can have various implementations, such as Figure 4A 、 Figure 4B or Figure 4CAs shown, the second switch element 320 includes any one of a second transistor T8 and a second AND gate 321 .

[0065] For example, Figure 4A or Figure 4C As shown, when the second switching element 320 includes a second transistor T8, a first end of the second transistor T8 is connected to the display data input terminal D of the display driving circuit 220, a second end of the second transistor T8 is connected to the first end of the third switching tube T2, and a third end of the second transistor T8 is connected to the control signal terminal TE; wherein the third end of the second transistor T8 is the gate of the second transistor T8.

[0066] In the embodiment of the present application, the second transistor T8 may include an NMOS transistor or a PMOS transistor, and the present application does not limit this. The first end of the second transistor T8 may be one of a source and a drain, the second end of the second transistor T8 may be the other of a source and a drain, and the third end of the second transistor T8 may be a gate. For example, when the second transistor T8 includes an NMOS transistor, the first end of the second transistor T8 may be a drain, and the second end of the second transistor T8 may be a source. For another example, when the second transistor T8 includes a PMOS transistor, the first end of the second transistor T8 may be a source, and the second end of the second transistor T8 may be a drain.

[0067] Thus, when the gate of the second transistor T8 receives the target signal indicating that the light sensor is in the off state, the second transistor T8 is in the on state; when the second transistor T8 is in the on state, the first scan signal terminal S1 of the scan driving circuit 230 outputs the first row scan signal to the gates of the third switch tube T2 and the fourth switch tube T3, turning on the third switch tube T2 and the fourth switch tube T3, so that the display data signal of the current row is written into the pixel circuit 100, that is, the potential V at point A is set to 0. A Set to Voltage. Thus, the potential at point A is V A Can be charged to Voltage, at this time the storage capacitor Cst0 is in a charging state, and the voltage stored in the storage capacitor Cst0 can be recorded as .

[0068] For example, Figure 4B As shown, in the case where the second switching element 320 includes a second AND gate 321, a first input terminal of the second AND gate 321 is connected to the control signal terminal TE, a second input terminal of the second AND gate 321 is connected to the display data input terminal D of the display driving circuit 220, and an output terminal of the second AND gate 321 is connected to the first terminal of the third switching tube T2.

[0069] Thus, in the embodiment of the present application, taking the target signal being high to indicate that the light sensor is in the off state as an example, the first input terminal of the second AND gate 321 receives the target signal from the control signal terminal TE at a high level, and the second input terminal of the second AND gate 321 receives the first scan signal from the scan drive circuit 230 and outputs the first row scan signal at a high level. In this case, the output terminal of the second AND gate 321 outputs the high-level first row scan signal to the gates of the third switch tube T2 and the fourth switch tube T3, turning on the third switch tube T2 and the fourth switch tube T3, so that the display data signal of the current row is written into the pixel circuit 100, that is, the potential V at point A is set to 0. A Set to Voltage. Thus, the potential at point A is V A Can be charged to Voltage, at this time the storage capacitor Cst0 is in a charging state, and the voltage stored in the storage capacitor Cst0 can be recorded as .

[0070] In some embodiments of the present application, in order to reset the storage capacitor Cst0 when the light sensor is in the off state, as shown in FIG. Figure 3 As shown, in the display module 10 provided in the embodiment of the present application, the pixel circuit 100 may include a storage capacitor Cst0 and a first reset transistor T4; the driving circuit 200 may include a display driving circuit 220 and a scan driving circuit 230; the switching device 300 may include a third switching element 330; The first end of the storage capacitor Cst0 is connected to the first voltage terminal V1, the second end of the storage capacitor Cst0 is connected to the first end of the first reset transistor T4, and the second end of the first reset transistor T4 is connected to the third voltage terminal V int1 connect; A first end of the third switch element 330 is connected to the control signal terminal TE, a second end of the third switch element 330 is connected to the second scan signal terminal S2 of the scan driving circuit 230, and a third end of the third switch element 330 is connected to the third end of the first reset transistor T4; the third end of the first reset transistor T4 is the gate of the first reset transistor T4; The third switch element 330 is configured to be in a conducting state when the third switch element 330 receives a target signal; When the third switch element 330 is in the on state, the scan driving circuit 230 is used to turn on the first reset transistor T4 ; and the display driving circuit 220 is used to reset the storage capacitor Cst0 .

[0071] The first end, the second end and the third end of the third switch element 330 may be a control end, an input end and an output end, respectively.

[0072] The first end of the third switch element 330 is connected to the control signal end TE, and is used to receive the target signal from the control signal end TE.

[0073] The second end of the third switch element 330 is connected to the second scan signal end S2 of the scan driving circuit 230 for inputting the second scan signal from the second scan signal end S2 .

[0074] The third terminal of the third switch element 330 is connected to the gate of the first reset transistor T4 for outputting the second scan signal from the second scan signal terminal S2 to the gate of the first reset transistor T4 when the third switch element 330 is in the on state.

[0075] For example, if Figure 4A 、 Figure 4B or Figure 4C As shown, in the display module 10 provided in the embodiment of the present application, the pixel circuit 100 further includes a storage capacitor Cst0, a first end of the storage capacitor Cst0 is connected to the first voltage terminal V1, a second end of the storage capacitor Cst0 is connected to the first end of the first reset transistor T4, and a second end of the first reset transistor T4 is connected to the third voltage terminal V int1 connect.

[0076] In this way, when the first end of the third switch element 330 receives the target signal output by the control signal terminal TE, the second end of the third switch element 330 and the third end of the third switch element 330 are connected, so that the third switch element 330 is in the on state. Then, the scan driving circuit 230 turns on the first reset transistor T4 when the third switch element 330 is in the on state. When the first reset transistor T4 is in the on state, the initialization voltage V int1 Set the potential at point A to V A Adjust to V int1 The voltage value of the storage capacitor Cst0 is reset.

[0077] In some embodiments of the present application, the third switch element 330 may have various implementations, such as Figure 4A 、 Figure 4B or Figure 4C As shown, the third switch element 330 includes any one of a third transistor T10 and a third AND gate 331 .

[0078] For example, Figure 4AAs shown, when the third switching element 330 includes a third transistor T10, the first end of the third transistor T10 is connected to the second scan signal end S2 of the scan driving circuit 230, the second end of the third transistor T10 is connected to the third end of the first reset transistor T4, and the third end of the third transistor T10 is connected to the control signal end TE; the third end of the third transistor T10 is the gate of the third transistor T10.

[0079] In the embodiment of the present application, the third transistor T10 may include an NMOS transistor or a PMOS transistor, and the present application does not limit this. The first end of the third transistor T10 may be one of a source and a drain, the second end of the third transistor T10 may be the other of a source and a drain, and the third end of the third transistor T10 may be a gate. For example, when the third transistor T10 includes an NMOS transistor, the first end of the third transistor T10 may be a drain, and the second end of the third transistor T10 may be a source. For another example, when the third transistor T10 includes a PMOS transistor, the first end of the third transistor T10 may be a source, and the second end of the third transistor T10 may be a drain.

[0080] Thus, when the gate of the third transistor T10 receives a target signal indicating that the light sensor is in the off state, the third transistor T10 is in the on state. When the third transistor T10 is in the on state, the second scan signal terminal S2 of the scan driving circuit 230 outputs a second scan signal to the first reset transistor T4, turning on the first reset transistor T4. When the first reset transistor T4 is in the on state, the initialization voltage V int1 Set the potential at point A to V A Adjust to V int1 The voltage value of the storage capacitor Cst0 is reset.

[0081] For example, Figure 4B or Figure 4C As shown, when the third switching element 330 includes a third AND gate 331, the first input terminal of the third AND gate 331 is connected to the control signal terminal TE, the second input terminal of the third AND gate 331 is connected to the second scan signal terminal S2 of the scan driving circuit 230, and the output terminal of the third AND gate 331 is connected to the third terminal of the first reset transistor T4.

[0082] Thus, in the embodiment of the present application, taking the target signal being at a high level indicating that the light sensor is in the off state as an example, the first input terminal of the third AND gate 331 receives the target signal from the control signal terminal TE at a high level, and the second input terminal of the third AND gate 331 receives the second scanning signal from the second scanning signal terminal S2 of the scanning driving circuit 230 at a high level. In this case, the output terminal of the third AND gate 331 outputs the high-level second scanning signal to the first reset transistor T4, turning on the first reset transistor T4. When the first reset transistor T4 is in the on state, the initialization voltage V int1 Set the potential at point A to V A Adjust to V int1 The voltage value of the storage capacitor Cst0 is reset.

[0083] Of course, in other embodiments of the present application, in addition to thin-film transistors or logic AND gates, the first switching element 310, the second switching element 320 and the third switching element 330 may also be other components with switching functions, or other units with switching functions. The present application does not limit the specific structures of the first switching element 310, the second switching element 320 and the third switching element 330.

[0084] In some embodiments of the present application, in order to achieve the reset of the light emitting element D1, as shown in FIG. Figure 4A 、 Figure 4B or Figure 4C As shown, the pixel circuit 100 may further include a second reset transistor T7; A first terminal of the second reset transistor T7 is connected to the light emitting element D1, and a second terminal of the second reset transistor T7 is connected to the fourth voltage terminal V int2 The third terminal of the second reset transistor T7 is connected to the third scan signal terminal S3 of the scan driving circuit 230; Wherein, the third terminal of the second reset transistor T7 is the gate of the second reset transistor T7; When the second reset transistor T7 is in the on state, the light emitting element D1 is used to provide a voltage at the fifth voltage terminal V int2 Reset is performed under the drive of .

[0085] In the embodiment of the present application, the second reset transistor T7 may include an NMOS transistor or a PMOS transistor, and the present application does not limit this. The second reset transistor T7 may include a first end, a second end, and a third end. The first end of the second reset transistor T7 may be one of a source and a drain, the second end of the second reset transistor T7 may be the other of a source and a drain, and the third end of the second reset transistor T7 may be a gate. For example, when the second reset transistor T7 includes an NMOS transistor, the first end of the second reset transistor T7 may be a drain, and the second end of the second reset transistor T7 may be a source. For another example, when the second reset transistor T7 includes a PMOS transistor, the first end of the second reset transistor T7 may be a source, and the second end of the second reset transistor T7 may be a drain.

[0086] In the embodiment of the present application, the third scanning signal outputted from the third scanning signal terminal S3 of the scanning driving circuit 230 can be used to turn on the second reset transistor T7, and the anode potential of the light emitting element D1 will be initialized to V int2 The voltage is reset, that is, the parasitic capacitance of the light emitting element D1 is initialized, so as to avoid the residual storage voltage in the parasitic capacitance of the light emitting element D1 affecting the display of the next frame of data.

[0087] In some embodiments of the present application, Figure 3 As shown, in order to supply power to the light-emitting element D1 to make it emit light, in the display module provided in the embodiment of the present application, the driving circuit may further include a power management circuit 240 .

[0088] The display driving circuit 220 is connected to the scanning driving circuit 230 and the light emitting driving circuit 210 respectively; the pixel circuit 100 is connected to the light emitting driving circuit 210, the display driving circuit 220, the scanning driving circuit 230 and the power management circuit 240 respectively.

[0089] The display driving circuit 220 controls the display data signal (ie )、V int1 Voltage signal and V int2 Output of voltage signal.

[0090] In addition, the display driving circuit 220 further controls the scan driving circuit 230 to output a scan signal, and the display driving circuit 220 further controls the light emitting control signal terminal EM of the light emitting driving circuit 210 to output a light emitting control signal.

[0091] The scanning signals include a first scanning signal outputted by the first scanning signal terminal S1 , a second scanning signal outputted by the second scanning signal terminal S2 , and a third scanning signal outputted by the third scanning signal terminal S3 .

[0092] The power management circuit 240 controls the output of the first voltage V1 and the third voltage V3 , wherein the first voltage V1 may be a positive voltage and the second voltage V2 may be a negative voltage.

[0093] When the scan signal is valid, the display data signal (i.e. ) is written into the pixel circuit 100, and then the light-emitting driving circuit 210 is turned on, and the power management circuit 240 supplies power to the light-emitting element D1 to make it emit light.

[0094] In practical applications, the working process of the pixel circuit 100 in one frame is divided into four time periods. Figures 5 to 8 ,right Figure 4C The working process of the pixel circuit shown in one frame is explained.

[0095] During the t1 period, if Figure 5 As shown, when the third AND gate 331 receives the target signal output from the TE terminal for indicating that the light sensor is in the off state and the second scanning signal output from the S2 terminal, the output terminal of the third AND gate 331 outputs a control signal to turn on the first reset transistor T4; when the first reset transistor T4 is in the on state, the initialization voltage V int1 Set the potential at point A to V A Adjust to V int1 In this way, when the light sensor is in the off state, the storage capacitor Cst0 is reset, preventing the residual storage voltage in the storage capacitor Cst0 from affecting the display of the next frame of data, and preventing the light emitted by the light sensor from affecting the storage capacitor Cst0.

[0096] During the t2 period, if Figure 6 As shown in FIG. 1 , when the T8 transistor receives the target signal from the TE terminal indicating that the light sensor is in the off state, the target signal keeps the T8 transistor on; when the T8 transistor is in the on state, the first scanning signal output from the S1 terminal keeps the third switch transistor T2 and the fourth switch transistor T3 on. The potential at point A is V A During the t1 period, it is initially V int1 Voltage, V int1 The voltage keeps the T1 transistor turned on. Since the driving transistor T1, the third switch tube T2 and the fourth switch tube T3 are all turned on, the display data signal input to the D terminal can be written into the storage capacitor Cst0 through the driving transistor T1, the third switch tube T2 and the fourth switch tube T3, that is, the potential V at point A is A Set to Voltage. Thus, the potential at point A is V A Can be charged to Voltage, at this time the storage capacitor Cst0 is in a charging state, and the voltage stored in the storage capacitor Cst0 can be recorded as Furthermore, when the light sensor is in the off state, the storage capacitor Cst0 is charged, which can avoid the influence of the light emitted by the light sensor on the storage capacitor Cst0.

[0097] During the t3 period, if Figure 7 As shown, in the embodiment of the present application, the third scanning signal outputted from the S3 terminal can be used to keep the second reset transistor T7 turned on. When the second reset transistor T7 is in the turned-on state, V int2 The initialization voltage output by the terminal adjusts the anode potential of the light-emitting element D1 to V int2 The anode potential of the light-emitting element D1 is initialized to V int2 The voltage is reset, that is, the parasitic capacitance of the light emitting element D1 is initialized, so as to avoid the residual storage voltage in the parasitic capacitance of the light emitting element D1 affecting the display of the next frame of data.

[0098] During the t4 period, if Figure 8 As shown, when the T9 tube receives the target signal from the TE terminal for indicating that the light sensor is in the off state, the target signal keeps the T9 tube turned on; when the T9 tube is in the on state, the light control signal output by the EM terminal passes through the T9 tube to the gate of the first switch tube T5 and the gate of the second switch tube T6, so that the first switch tube T5 and the second switch tube T6 remain turned on; the voltage stored in the storage capacitor Cst0 is , the storage capacitor Cst0 enters the discharge state, The voltage keeps the driving transistor T1 on. Because the driving transistor T1, the first switch T5, and the second switch T6 remain on, the voltage at terminal V1 flows through the first switch T5, the driving transistor T1, and the second switch T6 to the light-emitting element D1. The output current of the driving transistor T1 flows through the light-emitting element D1, causing the light-emitting element D1 to emit light. Thus, since the light sensor is turned off and the light element D1 is driven to emit light, the influence of the light sensor's light on the current of the light-emitting element D1 is avoided, thereby preventing abnormal light spots or dark spots on the display module 10 and improving the display quality of the display module 10.

[0099] It is understandable that the time periods t1, t2, t3 and t4 may be continuous or spaced apart from each other, and this application does not impose any specific limitation on this.

[0100] In addition, based on the same concept as the display module provided in any of the above embodiments, an embodiment of the present application also provides an electronic device.

[0101] For example, Figure 9 As shown, the electronic device 400 may include the display module 10 provided by any of the above embodiments and may achieve the same functions. To avoid repetition, details will not be given here.

[0102] The electronic device 400 may further include a light sensor, which may include any one of an infrared light sensor and a laser sensor. The pixel circuit in the display module 10 may be arranged within the light emission range of the light sensor. Thus, in some embodiments of the present application, when the light sensor is in the off state, the driver circuit 200 drives the pixel circuit 100 to be in the on state, thereby preventing the light emitted by the light sensor from affecting the current of the light-emitting element of the pixel circuit 100, thereby avoiding the appearance of abnormal light spots or dark spots on the display module 10 and improving the display effect of the display module 10.

[0103] In the embodiments of the present application, the electronic device may be a terminal or other device other than a terminal. For example, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It may also be a server, a network attached storage (NAS), a personal computer (PC), etc., and the embodiments of the present application do not specifically limit this.

[0104] Throughout this specification, reference to terms such as "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 illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0105] 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 intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display module, characterized in that: include: A pixel circuit, a driving circuit and a switching device, wherein the driving circuit is connected to the pixel circuit via the switching device; The switch device is configured to be in an on state when the switch device receives a target signal; wherein the target signal is used to indicate that the light sensor is in an off state; The driving circuit is used to drive the pixel circuit to be in an operating state when the switching device is in an on state.

2. The display module according to claim 1, wherein: The first end of the switch device is connected to the control signal end, the second end of the switch device is connected to the driving circuit, and the third end of the switch device is connected to the pixel circuit.

3. The display module according to claim 2, wherein: The pixel circuit includes a light emitting control circuit, the driving circuit includes a light emitting driving circuit, and the switching device includes a first switching element; The first end of the first switch element is connected to the control signal end, the second end of the first switch element is connected to the light-emitting control signal end of the light-emitting drive circuit, and the third end of the first switch element is connected to the light-emitting control circuit; The first switch element is configured to be in a conducting state when the first switch element receives the target signal; The pixel circuit includes a light-emitting element. When the first switch element is in an on state, the light-emitting control circuit is used to drive the light-emitting element to emit light.

4. The display module according to claim 3, wherein: The light emitting control circuit includes a driving transistor, a first switching transistor, and a second switching transistor; the first end of the driving transistor is connected to the second end of the first switching transistor, and the first end of the first switching transistor is connected to a first voltage terminal; the second end of the driving transistor is connected to the first end of the second switching transistor, and the second end of the second switching transistor is connected to the light emitting element, and the light emitting element is connected to a second voltage terminal; The light-emitting control signal terminal of the light-emitting driving circuit is connected to the third terminal of the first switching tube and the third terminal of the second switching tube respectively through the first switching element; Wherein, the third end of the first switch tube is the gate of the first switch tube; the third end of the second switch tube is the gate of the second switch tube; Wherein, when the first switch element is in the on state, the light-emitting driving circuit is used to make the first switch tube and the second switch tube in the on state, so that the light-emitting element emits light under the drive of the first voltage end.

5. The display module according to claim 4, wherein: The first switching element includes any one of a first transistor and a first AND gate; Wherein, in the case where the first switching element includes a first transistor, the first end of the first transistor is connected to the light-emitting control signal end of the light-emitting drive circuit, the second end of the first transistor is connected to the third end of the first switching transistor and the third end of the second switching transistor respectively, and the third end of the first transistor is connected to the control signal end; wherein the third end of the first transistor is the gate of the first transistor; In which, when the first switching element includes a first AND gate, the first input end of the first AND gate is connected to the control signal end, the second input end of the first AND gate is connected to the light-emitting control signal end of the light-emitting driving circuit, and the output end of the first AND gate is connected to the third end of the first switching tube and the third end of the second switching tube.

6. The display module according to claim 2, wherein: The driving circuit includes a display driving circuit, and the switching device includes a second switching element; A first end of the second switch element is connected to the control signal end, a second end of the second switch element is connected to the display data input end of the display driving circuit, and a third end of the second switch element is connected to the light emitting control circuit; The second switch element is configured to be in a conducting state when the second switch element receives the target signal; The pixel circuit includes a storage capacitor, and when the second switch element is in an on state, the display driving circuit is used to write a display data signal into the storage capacitor.

7. The display module according to claim 6, wherein: The driving circuit further includes a scanning driving circuit; the pixel circuit includes a light emitting control circuit, and the light emitting control circuit includes a driving transistor, a third switching tube and a fourth switching tube; The first end of the third switch tube is connected to the display data input end of the display driving circuit through the second switch element, the second end of the third switch tube is connected to the first end of the driving transistor, and the third end of the third switch tube is connected to the first scan signal end of the scan driving circuit; The first end of the fourth switch tube is connected to the second end of the driving transistor, the second end of the fourth switch tube is connected to the third end of the driving transistor, and the third end of the fourth switch tube is connected to the first scan signal end of the scan driving circuit; The first terminal of the storage capacitor is connected to the first voltage terminal, and the second terminal of the storage capacitor is connected to the third terminal of the driving transistor; Wherein, the third end of the driving transistor is the gate of the driving transistor; the third end of the third switching tube is the gate of the third switching tube, and the third end of the fourth switching tube is the gate of the fourth switching tube; Wherein, when the second switch element is in the on state, the scan driving circuit is used to make the third switch tube and the fourth switch tube in the on state, and the display driving circuit is used to write the display data signal into the storage capacitor.

8. The display module according to claim 7, wherein: The second switching element includes any one of a second transistor and a second AND gate; Wherein, in the case where the second switching element includes a second transistor, a first end of the second transistor is connected to the display data input end of the display driving circuit, a second end of the second transistor is connected to the first end of the third switching transistor, and a third end of the second transistor is connected to the control signal end; wherein the third end of the second transistor is the gate of the second transistor; In which, when the second switching element includes a second AND gate, the first input end of the second AND gate is connected to the control signal end, the second input end of the second AND gate is connected to the display data input end of the display driving circuit, and the output end of the second AND gate is connected to the first end of the third switching tube.

9. The display module according to claim 2, wherein: The pixel circuit includes a storage capacitor and a first reset transistor; the driving circuit includes a display driving circuit and a scan driving circuit; the switching device includes a third switching element; The first end of the storage capacitor is connected to the first voltage terminal, the second end of the storage capacitor is connected to the first end of the first reset transistor, and the second end of the first reset transistor is connected to the third voltage terminal of the display driving circuit; A first end of the third switch element is connected to the control signal end, a second end of the third switch element is connected to the second scan signal end of the scan driving circuit, and a third end of the third switch element is connected to the third end of the first reset transistor; the third end of the first reset transistor is the gate of the first reset transistor; The third switch element is configured to be in a conducting state when the third switch element receives the target signal; When the third switch element is in the on state, the scan driving circuit is used to turn on the first reset transistor; The display driving circuit is used to reset the storage capacitor.

10. The display module according to claim 9, wherein: The third switching element includes any one of a third transistor and a third AND gate; Wherein, in the case where the third switching element includes a third transistor, a first terminal of the third transistor is connected to the second scan signal terminal of the scan driving circuit, a second terminal of the third transistor is connected to the third terminal of the first reset transistor, and a third terminal of the third transistor is connected to the control signal terminal; and the third terminal of the third transistor is a gate of the third transistor; In which, when the third switching element includes a third AND gate, the first input end of the third AND gate is connected to the control signal end, the second input end of the third AND gate is connected to the second scan signal end of the scan driving circuit, and the output end of the third AND gate is connected to the third end of the first reset transistor.

11. An electronic device, characterized in that: Comprising the display module according to any one of claims 1-10.

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