Electronic device, screen display method and screen module

Abstract

The present disclosure relates to an electronic device, a screen display method, and a screen module, wherein the electronic device includes: a screen; a screen driver module for driving the screen display; a processor for setting a reset signal in the screen drive timing; and the screen driver module detects the reset signal and resets the driver element during the process of driving the screen display. The present disclosure uses the screen driver module to insert frames during the normal screen display process, adjusts the drive timing to reset the driver element, and quickly restores its working state. While improving the green screen problem, it also has a rapid recovery effect on problems such as long residual color, poor sensor hole display, and screen burn-in. It solves the problem of green screen or abnormal display caused by external static electricity.

Description

Technical Field

[0001] The present disclosure relates to the field of screen display technology, and in particular to an electronic device, a screen display method, and a screen module. Background Art

[0002] With the development of display technology, display devices in electronic devices have become increasingly important, especially in the field of smartphones. Users are increasingly prioritizing experience, and problems such as green screen, afterimage, and burn-in on organic laser displays and organic light-emitting semiconductor (OLED) screens have been criticized. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides an electronic device, a screen display method and a screen module.

[0004] According to a first aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a screen; a screen driving module for driving the screen display; and a processor for setting a reset signal in a screen driving sequence; wherein the screen driving module detects the reset signal and resets the driving element during the process of driving the screen display.

[0005] In some possible implementations, the driving element is an element in the screen driving module whose working state is greatly affected by charge accumulation.

[0006] In some possible implementations, the driving element is a driving transistor, and the screen driving module resets the driving element according to an input first reset signal.

[0007] In some possible implementations, the processor triggers a first reset signal in a first phase of the preset frame according to a signal entering the preset frame.

[0008] In some possible embodiments, the screen driving module includes a driving branch, a first reset branch and a second reset branch; the driving branch includes the driving element and the light-emitting element connected in series, the first reset branch is connected to the driving element, and the second reset branch is connected to the light-emitting element.

[0009] In some possible implementations, the processor triggers a first reset signal in a first phase of the preset frame and triggers a second reset signal in a second phase of the preset frame according to a signal entering the preset frame.

[0010] In some possible implementations, a sixth switch tube is provided between the driving element and the light-emitting element, and the sixth switch tube separates the first reset branch and the second reset branch on the driving branch, and the control end of the sixth switch tube is connected to the light-emitting control signal.

[0011] In some possible implementations, the first reset branch is provided with a second switch transistor, and a control terminal of the second switch transistor is connected to a second scan signal.

[0012] In some possible implementations, the second reset branch is provided with a fourth switch transistor, and a control terminal of the fourth switch transistor is connected to the first scan signal.

[0013] In some possible embodiments, the screen driving module further has a capacitor branch connected between the high-level input end and the first reset branch, the capacitor branch is provided with a capacitor, and the connection point between the capacitor branch and the first reset branch is located between the second switching transistor and the driving element.

[0014] In some possible implementations, the screen driving module further has a data writing branch, which is provided with a first switching transistor. The data writing branch is connected to the driving branch, and the connection point between the data writing branch and the driving branch is located between the driving element and the high-level input end.

[0015] In some possible implementations, a fifth switch transistor is further provided between a connection point between the data writing branch and the driving branch and the high-level input terminal, and the fifth switch transistor is connected to a light-emitting control signal.

[0016] In some possible implementations, the screen driving module includes a plurality of switching transistors, and all of the plurality of switching transistors are PMOS transistors.

[0017] According to a second aspect of the embodiments of the present disclosure, there is provided a screen display method for an electronic device according to any one of the implementations of the first aspect above, the method comprising:

[0018] In the initialization phase, the connection between the two ends of the driving element and the high level side and the low level side on the driving branch is disconnected, and the first reset branch connected to the control end of the driving element is turned on, thereby resetting the driving element;

[0019] During the data writing phase, the electrical connection between the light emitting element on the driving branch and the high level side is cut off, and the light emitting element is reset by the second reset branch; and

[0020] In the light-emitting stage, all the switch tubes on the driving branch are turned on, and the first reset branch and the second reset branch connected to the driving branch are turned off.

[0021] In some possible implementations, a first reset signal is triggered during an initialization phase of the preset frame according to a signal entering the preset frame, and a second reset signal is triggered during a data writing phase of the preset frame.

[0022] According to a third aspect of the embodiments of the present disclosure, a screen module includes: a screen driving module in an electronic device as described in any implementation of the first aspect above; and a screen, wherein the screen driving module is integrated with the screen.

[0023] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: The present disclosure provides an electronic device, which drives the screen display through a screen driver module; a reset signal is set in the screen driver timing by a processor; and the screen driver module detects the reset signal and resets the driver element during the process of driving the screen display. The present disclosure uses the screen driver module to insert frames during the normal screen display process, adjusts the drive timing to reset the driver element, and quickly restores its working state. While improving the green screen problem, it also has a rapid recovery effect on problems such as long residual, poor sensor hole display, and screen burn-in; and solves the problem of green screen or abnormal display caused by external static electricity.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0026] Figure 1 It is the characteristic curve of the thin film transistor device caused by static electricity.

[0027] Figure 2 (a) is a schematic diagram of the structure of the screen.

[0028] Figure 2 (b) Schematic diagram of the screen structure used to dissipate static electricity in the prior art.

[0029] Figure 3 It is a schematic diagram of the path for screen charge dissipation in the prior art.

[0030] Figure 4 The figure is a schematic diagram of an electronic device according to an exemplary embodiment.

[0031] Figure 5is a circuit diagram of a screen driving module according to an exemplary embodiment.

[0032] Figure 6 The present invention is a timing diagram showing a screen display method of an electronic device according to an exemplary embodiment.

[0033] Figure 7 It is a timing diagram showing another screen display method of an electronic device according to an exemplary embodiment.

[0034] Figure 8 is a timing diagram showing another screen display method of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0036] The green screen or abnormal display caused by external static electricity is mainly caused by screen afterimage, poor display of the optical fingerprint area under the screen, and poor color spots on the distance sensor hole. The main reason is the poor performance of the thin film transistor device of the screen. Figure 1 As shown in the figure, the characteristic curve of the thin film transistor device caused by static electricity, due to the influence of friction or falling, charge will accumulate on the back of the screen of the whole machine, and the characteristic curve of the thin film transistor device or the threshold voltage Vth will drift. The threshold voltage Vth drifts from the solid line position to the dotted line position, causing the local driving current to change. Since the green pixel has high luminous efficiency, this kind of common defect is the green screen.

[0037] Figure 2 (a) is a schematic diagram of the structure of the screen, showing a schematic diagram of the structure of the screen module section between the support film 7 and the cover plate 1. The screen panel layer 4, the polarizer layer 3 and the adhesive layer 2 are stacked in sequence from bottom to top between the support film 7 and the cover plate 1, and a copper foil layer 5 is adhered to the side of the support film 7 away from the screen panel layer 4.

[0038] In related technologies, such as Figure 2 (b) Schematic diagram of a screen structure for dissipating static electricity in the prior art. The screen module section is coated with silver paste 6 or anti-static liquid between the support film 7 and the cover plate 1 to conduct away the charge accumulated on the back of the screen, preventing display abnormalities caused by excessive static electricity accumulation. The specific screen charge dissipation path can be found in Figure 3As shown, the charge accumulated in the cover plate 1 in the screen module section is conducted away through the silver paste 6 to prevent excessive static electricity from accumulating in the support film 7 and causing display abnormalities.

[0039] However, both applying silver paste and anti-static liquid require additional costs, and the silver paste solution has poor long-term stability and is prone to breakage, which greatly reduces the effect of dissipating static electricity.

[0040] Currently, the proportion of screen brightness defects in display devices in electronic devices is more serious than other items. The main reason is that the accumulation of static electricity in the entire machine causes the working state of the thin-film transistor device to shift, resulting in uneven display or local greening. The lower the grayscale, the more serious the phenomenon. Customer complaints have increased sharply, directly reducing the user experience and need to be solved urgently.

[0041] In order to solve the above technical problems, the present disclosure provides an electronic device, a screen display method and a screen module.

[0042] According to a first aspect of the present disclosure, there is provided an electronic device, such as Figure 4 As shown, the electronic device includes: a screen 100 , a screen driving module 200 and a processor 300 .

[0043] The screen driving module 200 is used to drive the screen 100 to display; the processor 300 is used to set a reset signal in the screen driving sequence; when the screen driving module 200 is driving the screen to display, the reset signal is detected and the driving element is reset.

[0044] Electronic devices can be referred to as terminal devices, user equipment (UE), mobile stations (MS), mobile terminals (MT), etc., and are devices that provide voice and / or data connectivity to users. Electronic devices can include smartphones, pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablet computers, wearable devices, or in-vehicle devices.

[0045] The screen 100 includes a support film and a cover plate arranged at intervals in a stacked manner. A screen panel layer, a polarizer layer and an adhesive layer are stacked in sequence from bottom to top between the support film and the cover plate. A copper foil layer is adhered to the side of the support film away from the screen panel layer. During the normal screen display process of the electronic device, the screen driving module is used to drive the screen display; the processor is used to set a reset signal in the screen driving timing; during the process of driving the screen display, the screen driving module detects the reset signal and resets the driving element. By using the screen driving module for interpolation, the driving timing is adjusted to reset the driving element, so that the screen working state is quickly restored.

[0046] During the normal screen-pointing process of an electronic device, the present invention uses a screen driver module to perform frame insertion, adjusts the driving timing, and resets the driving elements, so that the working state is quickly restored. While improving the green screen problem, it also has a rapid recovery effect on problems such as long screen residue, poor sensor hole display, and screen burn-in; and solves the problem of green screen or abnormal display caused by external static electricity.

[0047] In some possible implementations, the driving element is an element in the screen driving module whose working state is greatly affected by charge accumulation.

[0048] It should be noted that the components in the screen driver module whose working state is greatly affected by charge accumulation refer to the components whose working state is shifted due to charge accumulation, resulting in uneven display or local greening.

[0049] The driving element is one or more transistors in the screen driving module.

[0050] The driving element is one or more transistors in the screen driving module, and the transistor includes a conductive layer having mutually parallel regions.

[0051] It can be understood that the driving element is an element in the screen driving module whose working state is shifted due to charge accumulation.

[0052] In the embodiment of the present disclosure, during the normal screen display process of the electronic device, the screen driver module is used to drive the screen display; the processor is used to set a reset signal in the screen driver timing; during the process of driving the screen display, the screen driver module detects the reset signal, resets the driver element, and inserts frames by using the screen driver module to adjust the driving timing to reset the driver element, so that its working state is quickly restored, and while improving the green screen problem, it also has a rapid recovery effect on problems such as long residual color, poor sensor hole display, and screen burn-in; and solves the problem of green screen or abnormal display caused by external static electricity.

[0053] Furthermore, the driving element is a driving transistor, and the screen driving module resets the driving element according to the input first reset signal.

[0054] like Figure 5 As shown, the control end of the driving transistor DTFT is connected to the high level side, the control end of the driving transistor DTFT is used to input the first reset signal, the first end of the driving transistor DTFT is connected to the data writing branch data, and the second end of the driving transistor DTFT is used to input the first reset signal.

[0055] The driving transistor DTFT may be a thin film transistor (TFT), and each liquid crystal pixel on the display screen is driven by a thin film transistor integrated behind the pixel.

[0056] The driving transistor DTFT in the embodiment of the present disclosure is a P-type driving transistor. It can be understood that the control terminal of the driving transistor DTFT is the gate, the first terminal is the source of the driving transistor DTFT, and the second terminal is the drain of the driving transistor DTFT. A low level is applied to the control terminal of the driving transistor DTFT to turn on the driving transistor DTFT. Of course, in other embodiments, the driving transistor DTFT can also be an N-type driving transistor. When an N-type driving transistor is used as the driving transistor DTFT in the pixel driving circuit, a high level signal is input to the control terminal of the driving transistor DTFT to turn it on.

[0057] In some possible implementations, the processor triggers a first reset signal in a first phase of the preset frame according to a signal entering the preset frame.

[0058] Among them, the first stage can be understood as the initialization stage, the preset frame can be understood as the reset frame, the reset frame can be the 30th frame, and when the 30th frame is reset, the screen driving module resets the driving element according to the input first reset signal.

[0059] The reset frame may be the 60th frame. When the 60th frame is reset, the screen driving module resets the driving element according to the input first reset signal.

[0060] In some possible embodiments, the screen driving module includes a driving branch 10, a first reset branch 20 and a second reset branch 30; the driving branch 10 includes a driving element and a light-emitting element connected in series, the first reset branch 20 is connected to the driving element, and the second reset branch 30 is connected to the light-emitting element.

[0061] Wherein, the driving element is a driving transistor DTFT. Figure 5 As shown, the anode of the light emitting element OLED is connected to the second end of the driving transistor DTFT, the anode of the light emitting element OLED is connected to the second reset branch 30, and the cathode of the light emitting element OLED is connected to the low level side.

[0062] The high-level side is a positive voltage, and the low-level side is a negative voltage. The driving transistor DTFT can generate a current under the action of the high-level side. This current flows through the light-emitting element OLED to make the light-emitting element OLED emit light. When the light-emitting element OLED emits light, that is, during the normal dot-screen process, the current flows from the light-emitting element OLED to the low-level side VSS.

[0063] It should be noted that one light emitting element OLED corresponds to a sub-pixel of one color among red (R), green (G), and blue (B) sub-pixels constituting one pixel.

[0064] In the embodiment of the present disclosure, by using the screen driver module to insert frames during the normal screen dot process, the driving timing is adjusted to reset the driving transistor DTFT, so that its working state is quickly restored, thereby improving the green screen problem. At the same time, it also has a rapid recovery effect on problems such as long residual, poor sensor hole display, and screen burn-in; it solves the problem of green screen or abnormal display caused by external static electricity.

[0065] In some possible implementations, the processor triggers a first reset signal in a first phase of the preset frame and triggers a second reset signal in a second phase of the preset frame according to a signal entering the preset frame.

[0066] Among them, the first stage can be understood as the initialization stage, the second stage can be understood as the data writing stage, the preset frame can be understood as the reset frame, the reset frame can be the 30th frame, and when the 30th frame is reset, in the initialization stage, the screen driving module resets the driving element according to the input first reset signal; in the data writing stage, the screen driving module resets the light-emitting element according to the input second reset signal.

[0067] The reset frame may be the 60th frame. When the 60th frame is reset, in the initialization phase, the screen driving module resets the driving element according to the input first reset signal; in the data writing phase, the screen driving module resets the light-emitting element according to the input second reset signal.

[0068] In some possible implementations, such as Figure 5 As shown, a sixth switch transistor T6 is provided between the driving element and the light emitting element OLED. The sixth switch transistor T6 separates the first reset branch 20 and the second reset branch 30 on the driving branch 10. The control end of the sixth switch transistor T6 is connected to the light emitting control signal EM.

[0069] The driving element is a driving transistor DTFT. The first end of the sixth switch transistor T6 is connected to the second end of the driving transistor DTFT. The second end of the sixth switch transistor T6 is respectively connected to the second reset branch 30 and the anode of the light emitting element OLED.

[0070] The sixth switch transistor T6 may be a P-type transistor. It is understood that the control terminal is the gate of the switch transistor, the first terminal is the source of the switch transistor, and the second terminal is the drain of the switch transistor. A low level is applied to the control terminal of the switch transistor to turn on the switch transistor. Of course, in other embodiments, the switch transistor may also be an N-type transistor. When an N-type transistor is used as the switch transistor in the pixel driving circuit, a high level signal is input to the control terminal of the switch transistor to turn it on.

[0071] In the embodiment of the present disclosure, the control terminal of the sixth switch transistor T6 is connected to the light emitting control signal EM, which can control the conduction of the sixth switch transistor T6.

[0072] For example, the high-level side is a positive voltage and the low-level side is a negative voltage. The driving transistor DTFT can generate a current under the action of the high-level side, and the current flows through the light-emitting element OLED to make the light-emitting element OLED emit light. When the light-emitting element OLED emits light, the current flows from the light-emitting element OLED to the low-level side.

[0073] In some possible implementations, such as Figure 5 As shown, the first reset branch 20 is provided with a second switch transistor T2 , and the control end of the second switch transistor T2 is connected to the second scan signal Scan(n-1).

[0074] The first end of the second switch transistor T2 is connected to the first reset end VI_Gate of the first reset branch 20 , and the second end of the second switch transistor T2 is connected to the control end and the second end of the driving transistor DTFT respectively.

[0075] The second switching transistor T2 is a P-type transistor. It is understood that the control terminal is the gate of the switching transistor, the first terminal is the source of the switching transistor, and the second terminal is the drain of the switching transistor. A low level is applied to the control terminal of the switching transistor to turn on the switching transistor. Of course, in other embodiments, the switching transistor may also be an N-type transistor. When an N-type transistor is used as the switching transistor in the pixel driving circuit, a high level signal is input to the control terminal of the switching transistor to turn it on.

[0076] In the embodiment of the present disclosure, the control end of the second switch transistor T2 is connected to the second scan signal Scan(n-1), and the second scan signal Scan(n-1) can control the conduction of the second switch transistor T2 so that the first reset branch 20 initializes the control end of the driving transistor DTFT.

[0077] In some possible implementations, such as Figure 5 As shown, a third switching transistor T3 is connected between the second switching transistor T2 and the second end of the driving element.

[0078] The control end of the third switch transistor T3 is used to receive the first scan signal Scan(n), the first end of the third switch transistor T3 is respectively connected to the second end of the second switch transistor T2 and the control end of the driving transistor DTFT, and the second end of the third switch transistor T3 is connected to the second end of the driving transistor DTFT;

[0079] The third switching transistor T3 is a P-type transistor. It is understood that the control terminal is the gate of the switching transistor, the first terminal is the source of the switching transistor, and the second terminal is the drain of the switching transistor. A low level is applied to the control terminal of the switching transistor to turn on the switching transistor. Of course, in other embodiments, the switching transistor may also be an N-type transistor. When an N-type transistor is used as the switching transistor in the pixel driving circuit, a high level signal is input to the control terminal of the switching transistor to turn it on.

[0080] In the embodiment of the present disclosure, the control terminal of the third switch transistor T3 is connected to the first scan signal Scan(n), and the first scan signal Scan(n) can control the conduction of the third switch transistor T3.

[0081] In some possible implementations, such as Figure 5 As shown, the second reset branch 30 is provided with a fourth switch transistor T4, and the control end of the fourth switch transistor T4 is connected to the first scan signal Scan(n).

[0082] The control end of the fourth switch transistor T4 is used to receive the first scan signal Scan(n), the first end of the fourth switch transistor T4 is connected to the second reset end VI_Anode of the second reset branch 30, and the second end of the fourth switch transistor T4 is connected to the anode of the light-emitting element OLED.

[0083] The fourth switching transistor T4 is a P-type transistor. It is understood that the control terminal is the gate of the switching transistor, the first terminal is the source of the switching transistor, and the second terminal is the drain of the switching transistor. A low level is applied to the control terminal of the switching transistor to turn on the switching transistor. Of course, in other embodiments, the switching transistor may also be an N-type transistor. When an N-type transistor is used as the switching transistor in the pixel driving circuit, a high level signal is input to the control terminal of the switching transistor to turn it on.

[0084] In the embodiment of the present disclosure, the control terminal of the fourth switch transistor T4 is used to access the first scan signal Scan(n). The first scan signal Scan(n) can control the conduction of the fourth switch transistor T4 and reset the anode of the light-emitting element OLED through the second reset branch 30.

[0085] In some possible implementations, such as Figure 5 As shown, the screen driving module also has a capacitor branch 40, which is connected between the high-level input terminal VDD on the high-level side and the first reset branch 20. The capacitor branch 40 is provided with a capacitor Cst, and the connection point between the capacitor branch 40 and the first reset branch 20 is located between the second switching transistor T2 and the driving element.

[0086] The driving element is a driving transistor DTFT, and the capacitor Cst is used to compensate for the potential of the control terminal of the driving transistor DTFT.

[0087] The capacitor Cst is used to store a data signal applied to the gate of the driving transistor DTFT.

[0088] In the embodiment of the present disclosure, the screen driving module controls the conduction of the first switching transistor T1 and the third switching transistor T3 through the first scanning signal Scan(n), controls the cut-off of the second switching transistor T2 through the first scanning signal Scan(n-1), and controls the cut-off of the fifth switching transistor T5 through the light-emitting control signal EM, so that the signal of the data write branch data is written into the gate of the driving transistor DTFT, and the capacitor Cst is charged.

[0089] In some possible implementations, such as Figure 5 As shown, the screen driving module also has a data writing branch 50, which is provided with a first switching transistor T1. The data writing branch 50 is connected to the driving branch 10, and the connection point between the data writing branch 50 and the driving branch 10 is located between the driving element and the high level input terminal VDD.

[0090] The control terminal of the first switch transistor T1 is used to receive the first scan signal Scan(n), the first terminal of the first switch transistor T1 is connected to the data terminal of the data writing branch 50, and the second terminal of the first switch transistor T1 is connected to the first terminal of the driving transistor DTFT;

[0091] The first switching transistor T1 is a P-type transistor. It can be understood that the control terminal is the gate of the switching transistor, the first terminal is the source of the switching transistor, and the second terminal is the drain of the switching transistor. A low level is applied to the control terminal of the switching transistor to turn on the switching transistor. Of course, in other embodiments, the switching transistor can also be an N-type transistor. When an N-type transistor is used as the switching transistor in the pixel driving circuit, a high level signal is input to the control terminal of the switching transistor to turn it on.

[0092] In the embodiment of the present disclosure, the control terminal of the first switch transistor T1 is connected to the first scan signal Scan(n), and the first scan signal Scan(n) can control the conduction of the first switch transistor T1.

[0093] In some possible implementations, such as Figure 5 As shown, a fifth switch transistor T5 is further provided between the connection point between the data writing branch 50 and the driving branch 10 and the high level input terminal VDD, and the fifth switch transistor T5 is connected to the light emitting control signal EM.

[0094] The control end of the fifth switch transistor T5 is used to access the light-emitting control signal EM, the first end of the fifth switch transistor T5 is used to connect to the high-level input end VDD, and the second end of the fifth switch transistor T5 is respectively connected to the second end of the first switch transistor T1 and the first end of the driving transistor DTFT.

[0095] The fifth switching transistor T5 is a P-type transistor. It is understood that the control terminal is the gate of the switching transistor, the first terminal is the source of the switching transistor, and the second terminal is the drain of the switching transistor. A low level is applied to the control terminal of the switching transistor to turn on the switching transistor. Of course, in other embodiments, the switching transistor may also be an N-type transistor. When an N-type transistor is used as the switching transistor in the pixel driving circuit, a high level signal is input to the control terminal of the switching transistor to turn it on.

[0096] In the embodiment of the present disclosure, the control terminal of the fifth switch transistor T5 is connected to the light emitting control signal EM, and the light emitting control signal EM can control the conduction of the fifth switch transistor T5.

[0097] In some possible embodiments, the screen driving module includes multiple switching transistors, and all of the multiple switching transistors are PMOS transistors, that is, the first switching transistor T1, the second switching transistor T2, the third switching transistor T3, the fourth switching transistor T4, the fifth switching transistor T5 and the sixth switching transistor T6 are all PMOS transistors.

[0098] Exemplarily, the first switch transistor T1 , the second switch transistor T2 , the third switch transistor T3 , the fourth switch transistor T4 , the fifth switch transistor T5 and the sixth switch transistor T6 are all P-type transistors of low temperature poly-silicon thin film transistors (LTPTs), which are turned on at a low level.

[0099] Based on the same inventive concept, the present disclosure also provides a screen display method for an electronic device, the method comprising:

[0100] In the initialization phase t1, the connection between the two ends of the driving element and the high level side and the low level side on the driving branch is disconnected, and the first reset branch connected to the control end of the driving element is turned on, thereby resetting the driving element;

[0101] In the data writing phase t2, the electrical connection between the light emitting element on the driving branch and the high level side is cut off, and the light emitting element is reset by the second reset branch; and

[0102] In the light-emitting stage t3, all the switch tubes on the driving branch are turned on, and the first reset branch and the second reset branch connected to the driving branch are turned off.

[0103] For example, Figure 5-6 As shown, in the initialization stage t1, the light emitting control signal EM is a high-level signal, the second scanning signal Scan(n-1) is a low-level signal, and the second switch transistor T2 is turned on, so that the control terminal of the driving element, that is, the driving transistor DTFT, is connected to the first reset terminal VI_Gate of the first reset branch 20, thereby resetting the control terminal of the driving element, that is, the driving transistor DTFT;

[0104] In the initialization stage t1, the first scan signal Scan(n) controls the first switch transistor T1, the third switch transistor T3 and the fourth switch transistor T4 to be turned off, and the second scan signal Scan(n-1) controls the second switch transistor T2 to be turned on, so that the control end of the driving element, i.e., the driving transistor DTFT, is connected to the first reset end VI_Gate of the first reset branch 20, thereby resetting the control end of the driving element, i.e., the driving transistor DTFT.

[0105] Resetting can eliminate the influence of the residual current of the previous light-emitting stage on the current light-emitting stage, and can improve the light-emitting uniformity of the screen.

[0106] In the data writing phase t2, the light-emitting control signal EM is a high-level signal, the second scanning signal Scan(n-1) is a high-level signal, the first scanning signal Scan(n) is a low-level signal, and the first switching transistor T1 is turned on to connect the capacitor Cst to the data writing branch data, and maintain the potential of the control end of the driving element, i.e., the driving transistor DTFT, through the capacitor Cst. At the same time, the fourth switching transistor T4 is turned on to connect the anode of the light-emitting element OLED to the second reset end VI_Anode of the second reset branch 30, so as to reset the anode of the light-emitting element OLED; the hysteresis phenomenon caused by the long-term electrical stress of the driving element, i.e., the driving transistor DTFT, is improved, so that problems such as long residual light and poor sensor hole display can be quickly recovered.

[0107] In the light-emitting stage t3, the light-emitting control signal EM is a low-level signal, the first scan signal Scan(n) is a high-level signal, the second scan signal Scan(n-1) is a high-level signal, and the fifth switch transistor T5 and the sixth switch transistor T6 are both turned on to allow current to flow through the light-emitting element OLED.

[0108] In the embodiment of the present disclosure, a black frame is inserted into the screen at regular intervals in order to reset the driving element and improve the hysteresis phenomenon caused by long-term electrical stress on the driving element, so that problems such as long residual light and poor sensor hole display can be quickly recovered.

[0109] In the disclosed embodiment, a white frame is inserted into the screen at regular intervals in order to reset the driving element and improve the hysteresis phenomenon caused by long-term electrical stress on the driving element, so that problems such as long residual light and poor sensor hole display can be quickly recovered.

[0110] In the embodiment of the present disclosure, a frame of grayscale image other than black and white images is inserted into the screen at regular intervals. The purpose is to reset the driving element and improve the hysteresis phenomenon caused by long-term electrical stress on the driving element, so that problems such as long residual and poor sensor hole display can be quickly recovered.

[0111] In some possible implementations, a first reset signal is triggered during an initialization phase t1 of the preset frame according to a signal entering the preset frame, and a second reset signal is triggered during a data writing phase t2 of the preset frame.

[0112] Among them, the preset frame can be understood as a reset frame. In the initialization phase t1 of the reset frame, the first reset signal is triggered, and the screen driving module resets the driving element according to the input first reset signal; in the data writing phase t2 of the reset frame, the second reset signal is triggered, and the screen driving module resets the light-emitting element according to the input second reset signal.

[0113] The screen display method further includes: the first end of the driving element is suspended, and the potential of the control end of the driving element is the potential connected to the first reset end VI_Gate of the first reset branch 20 to achieve an open-state reset.

[0114] For example, Figure 7 As shown, taking 60Hz refresh rate as an example, it should be noted that the refresh rate can be 30Hz, 60Hz, 90Hz, 120Hz, 144Hz, etc.

[0115] Taking the 30th frame reset as an example, the 1st to 29th frames are normal screen timing, the 31st to 59th frames are normal timing, and the 60th frame is the reset frame, and this cycle continues.

[0116] Frames 1-29: Initialization phase t1, data writing phase t2, and light-emitting phase t3 work normally. The timing signal control method is the same as Figure 5 The control method shown is the same and will not be repeated here.

[0117] Frame 30 (reset frame): initialization phase t1, data writing phase t2, the screen driver module works normally, and the scanning signal Scan is scanned normally line by line;

[0118] In this frame, the data writing phase t2 controls the data signal to stop accessing the first end of the driving element, i.e., the driving transistor DTFT, through the data writing branch data. The first switching transistor T1 is in the on state, and the first end of the driving element, i.e., the driving transistor DTFT, is suspended. The potential of the control end of the driving element, i.e., the driving transistor DTFT, is the potential connected to the first reset end VI_Gate of the first reset branch 20 to achieve on-state reset.

[0119] For example, Figure 8 As shown, taking 60Hz refresh rate as an example, it should be noted that the refresh rate can be 30Hz, 60Hz, 90Hz, 120Hz, 144Hz, etc.

[0120] Taking the 30th frame reset as an example, the 1st to 29th frames are normal screen timing, the 31st to 59th frames are normal timing, and the 60th frame is the reset frame, and this cycle continues.

[0121] Frames 1-29: Initialization phase t1, data writing phase t2, and light-emitting phase t3 work normally. The timing signal control method is the same as Figure 5 The control method shown is the same and will not be repeated here.

[0122] Frame 30 (reset frame): initialization phase t1, data writing phase t2, the screen driver module works normally, and the scanning signal Scan is scanned normally line by line;

[0123] During this frame, the first scan signal Scan(n) is at a high level, and the control data signal is connected to the first terminal of the driving element, namely the driving transistor DTFT, via the data write branch data. The first switching transistor T1 is in the off state. At this time, the first terminal of the driving element, namely the driving transistor DTFT, is floating, and the control terminal of the driving element, namely the driving transistor DTFT, is at the potential connected to the first reset terminal VI_Gate of the first reset branch 20, thereby achieving an on-state reset.

[0124] It is understood that during the reset frame data writing phase, the voltage written to the DTFT gate can be a constant voltage (such as VGSP, VGMP, or a constant voltage between the two), or a square wave signal that alternates between VGMP and VGSP. VGSP and VGMP are the minimum and maximum voltages output by the Driver IC, respectively.

[0125] The VI_gate voltage in the reset phase of the 30th frame may be inconsistent with that in the normal timing phase and can be adjusted as needed.

[0126] Based on the same inventive concept, the present disclosure also provides a screen module, including: a screen driving module and a screen as in the above-mentioned electronic device.

[0127] The screen driver module is integrated with the screen.

[0128] Among them, the screen drive module includes multiple pixel drive circuits, and the multiple pixel drive circuits are arranged in an array. The screen module also includes a data driver, a scan driver and a light controller. One end of the multiple first scan signal lines and the second scan signal lines are respectively connected to each row of pixel drive circuits, and the other end is connected to the scan driver. The scan driver provides a scan signal and transmits it to the pixel drive circuit through the scan signal line. One end of the multiple data signal lines is connected to each column of pixel drive circuits, and the other end is connected to the data driver. The data driver provides a data signal and transmits it to the pixel drive circuit through the data signal line. One end of the multiple light control signal lines is connected to each row of pixel drive circuits, and the other end is connected to the light controller. The light controller provides a light control signal and transmits it to the pixel drive circuit through the light control signal line.

[0129] In the present disclosure, during the normal screen dot process, the screen driver module is used to drive the screen display; the processor is used to set a reset signal in the screen drive timing; during the process of driving the screen display, the screen driver module detects the reset signal, resets the drive element, and uses the screen driver module to perform frame insertion and adjust the drive timing to reset the drive transistor DTFT, so that its working state is quickly restored, thereby improving the green screen problem in the display device and quickly recovering problems such as long residual light, poor sensor hole display, and screen burn-in; and solves the problem of green screen or abnormal display caused by external static electricity.

[0130] It is understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of related objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0131] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0132] It can be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0133] It is further understood that, unless otherwise specified, “connection” includes a direct connection where there are no other components between the two elements, and also includes an indirect connection where there are other elements between the two elements.

[0134] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0135] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0136] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. An electronic device, characterized in that: The electronic device comprises: Screen; A screen driving module, used to drive the screen display; A processor, configured to insert a preset frame into a screen driving sequence, wherein the preset frame triggers a reset signal; The screen driving module detects the reset signal during the process of driving the screen to display, and resets the driving element to release the electrostatically accumulated charge.

2. The electronic device according to claim 1, wherein The driving element is an element in the screen driving module whose working state is greatly affected by charge accumulation.

3. The electronic device according to claim 2, wherein: The driving element is a driving transistor, and the screen driving module resets the driving element according to an input first reset signal.

4. The electronic device according to claim 3, wherein: The processor triggers a first reset signal in a first phase of the preset frame according to a signal entering the preset frame.

5. The electronic device according to claim 1, wherein The screen driving module includes a driving branch, a first reset branch and a second reset branch; the driving branch includes the driving element and the light-emitting element connected in series, the first reset branch is connected to the driving element, and the second reset branch is connected to the light-emitting element.

6. The electronic device according to claim 5, characterized in that The processor triggers a first reset signal in a first phase of the preset frame and triggers a second reset signal in a second phase of the preset frame according to a signal entering the preset frame.

7. The electronic device according to claim 5, wherein: A sixth switch tube is provided between the driving element and the light emitting element. The sixth switch tube separates the first reset branch and the second reset branch on the driving branch. The control end of the sixth switch tube is connected to a light emitting control signal.

8. The electronic device according to claim 5, wherein: The first reset branch is provided with a second switch transistor, and a control terminal of the second switch transistor is connected to a second scan signal.

9. The electronic device according to claim 5, wherein: The second reset branch is provided with a fourth switch transistor, and the control terminal of the fourth switch transistor is connected to the first scan signal.

10. The electronic device according to claim 8, wherein The screen driving module further has a capacitor branch connected between the high level input terminal and the first reset branch. The capacitor branch is provided with a capacitor. The connection point between the capacitor branch and the first reset branch is located between the second switching transistor and the driving element.

11. The electronic device according to claim 10, characterized in that The screen driving module also has a data writing branch, which is provided with a first switching transistor. The data writing branch is connected to the driving branch, and the connection point between the data writing branch and the driving branch is located between the driving element and the high level input end.

12. The electronic device according to claim 11, wherein: A fifth switch transistor is further provided between the connection point between the data writing branch and the driving branch and the high level input terminal, and the fifth switch transistor is connected to the light emitting control signal.

13. The electronic device according to any one of claims 1 to 12, characterized in that: The screen driving module includes a plurality of switch transistors, and the plurality of switch transistors are all PMOS transistors.

14. A screen display method for an electronic device according to any one of claims 1 to 13, characterized in that: The method comprises: During the initialization phase, the connections between the two ends of the driving element on the driving branch and the high-level side and the low-level side are disconnected, and the first reset branch connected to the control end of the driving element is turned on. According to the preset frame inserted in the screen driving timing, the first reset branch detects the reset signal triggered by the preset frame, thereby resetting the driving element to release the electrostatic charge accumulated; During the data writing phase, the electrical connection between the light emitting element on the driving branch and the high level side is cut off, and the light emitting element is reset by the second reset branch; and In the light-emitting stage, all the switch tubes on the driving branch are turned on, and the first reset branch and the second reset branch connected to the driving branch are turned off.

15. The screen display method according to claim 14, characterized in that: According to the signal entering the preset frame, the first reset signal is triggered in the initialization phase of the preset frame, and the second reset signal is triggered in the data writing phase of the preset frame.

16. A screen module, characterized in that: include: A screen driving module in an electronic device according to any one of claims 1 to 13; as well as, The screen driving module is integrated with the screen.

Images