Display device and display panel

Abstract

The embodiment of the invention provides display equipment and a display panel, relates to the technical field of display, and is used for solving the problem of waste of display power consumption in related technologies. The display device comprises a plurality of pixel circuits and a control device, and the control device is electrically connected with at least one pixel circuit. The pixel circuit includes a storage sub-circuit. And the control device is used for controlling the electric quantity stored in the storage sub-circuit of the pixel circuit in the next display stage in two adjacent display stages, including at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in the previous display stage. According to the display equipment provided by the embodiment of the invention, redundant information between the two display stages can be effectively utilized, so that the purpose of reducing power consumption waste is achieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and in particular, to a display device and a display panel. Background Art

[0002] The display device includes a display panel, in which a pixel circuit and a light-emitting unit are arranged. The pixel circuit is electrically connected to the light-emitting unit, and the pixel circuit is used to drive the light-emitting unit to emit light, thereby realizing a display function.

[0003] In the related art, the display device needs to discharge and then charge the pixel circuit in each display stage, so the current charging and discharging method of the pixel circuit has a large power waste. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a display device and a display panel to solve the problem of wasteful display power consumption in the related art.

[0005] In order to achieve the above purpose, the present application provides the following solutions:

[0006] In a first aspect, a display device is provided, comprising: a plurality of pixel circuits and a control device, wherein the control device is electrically connected to at least one pixel circuit; the pixel circuit comprises a storage subcircuit. The pixel circuit is used to output a driving current, and the storage subcircuit is used to maintain the driving current for a period of time. The control device is used to: in two adjacent display stages, control the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage, including at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage.

[0007] In the display device provided by the embodiment of the present application, the pixel circuit can be used to output the driving current, and the storage subcircuit in the pixel circuit can maintain the size of the driving current for a period of time (such as the light-emitting stage) when the pixel circuit outputs the driving current (for example, the pixel circuit can also include a driving subcircuit, and the amount of electricity in the storage subcircuit can maintain the activation of the driving subcircuit for a period of time), so that when the pixel circuit is connected to the light-emitting unit in the display device, the driving current can drive the light-emitting unit to emit light normally. In addition, since a control device is provided, the amount of electricity stored in the storage subcircuit of the pixel circuit in the next display stage can be controlled in the next display stage, including at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage. In this way, at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage can be reused, that is, it can be applied to a certain pixel circuit in the next display stage. Compared with the related art that each display stage (for example, including the initialization stage, the writing stage and the light-emitting stage) needs to be charged and discharged, the redundant information between the two display stages can be effectively utilized, thereby achieving the purpose of reducing power consumption waste.

[0008] In some embodiments, the control device includes a voltage comparator; the voltage comparator is electrically connected between the data voltage line and the pixel circuit; the voltage comparator is used to compare the data voltages of two adjacent frames transmitted by the data voltage line, and when the comparison result is that the data voltage of the next frame is greater than the data voltage of the previous frame, the difference between the data voltages of the two adjacent frames is output to the pixel circuit. In this way, the voltage comparator can be used to compare the data voltages of two adjacent frames, and when the data voltage of the next frame is greater than the data voltage of the previous frame, the difference between the data voltages of the two adjacent frames is output to the pixel circuit, so that there is no need to discharge the pixel circuit of the previous display stage, and the original power can be directly used, and on this basis, the additional power required can be further supplemented, which can be used for display in the next display stage, thereby improving the problem of power consumption waste.

[0009] In some embodiments, the voltage comparator is further configured to not output voltage to the pixel circuit when the comparison result is that the voltage of the next frame data is less than or equal to the voltage of the previous frame data. In this embodiment, in the next display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0010] In some embodiments, the voltage comparator includes a non-inverting input terminal, a reverse input terminal and an output terminal, wherein the non-inverting input terminal is electrically connected to a data voltage line, the reverse input terminal is electrically connected to another data voltage line, and the output terminal is electrically connected to the pixel circuit; wherein the data voltage line is used to transmit the data voltage of the previous frame, and the other data voltage line is used to transmit the data voltage of the next frame. With such a configuration, two data voltage lines can be used to transmit two adjacent frames of data voltage to the voltage comparator in a time-sharing manner for comparison by the voltage comparator.

[0011] Exemplarily, the voltage comparator may be a LM393 chip.

[0012] In some embodiments, the control device further includes a selection switch, and the voltage comparator includes a same-direction input terminal, a reverse input terminal, and an output terminal; the selection switch is electrically connected between the data voltage line, the same-direction input terminal, and the reverse input terminal, and the selection switch is used to output the previous frame data voltage to the same-direction input terminal and the next frame data voltage to the reverse input terminal in a time-sharing manner. In this way, the number of data voltage lines can be reduced, for example, reduced by half. This is conducive to simplifying the structure, and the voltage comparator can also receive two adjacent frames of data voltage in a time-sharing manner and compare them.

[0013] In some embodiments, the control device includes a display driver chip; the display driver chip is electrically connected to the pixel circuit through a data voltage line; the display driver chip is used to: compare the data voltages of two adjacent frames, and when the comparison result is that the data voltage of the next frame is greater than the data voltage of the previous frame, the difference between the data voltages of the two adjacent frames is output to the pixel circuit via the data voltage line. In this way, at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage can be reused, that is, it can be applied to a certain pixel circuit in the next display stage. Compared with the related art that each display stage needs to be charged and discharged, the redundant information between the two display stages can be effectively utilized, thereby achieving the purpose of reducing power consumption waste. And the voltage comparison function can be moved up to the display driver chip, at this time, for example, the comparison function can be implemented by software and / or hardware, which can make the structure simpler.

[0014] In some embodiments, the display driver chip is further configured to not output voltage to the pixel circuit when the comparison result shows that the voltage of the next frame data is less than or equal to the voltage of the previous frame data. In this embodiment, in the next display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0015] In some embodiments, the control device includes a processing unit and a display driving unit; the processing unit is used to compare the target data corresponding to the same pixel circuit in two adjacent frames of image data, and when the comparison result is that the data voltage corresponding to the target data of the latter frame is greater than the data voltage corresponding to the target data of the previous frame, the data difference between the two adjacent frames of target data is output; the display driving unit is electrically connected between the processing unit and the pixel circuit, and the display driving unit is used to obtain a compensation voltage based on the data difference, and output the compensation voltage to the pixel circuit. In this embodiment, when the data voltage of the latter frame is greater than the data voltage of the previous frame, the difference between the data voltages of the two adjacent frames can be output to the pixel circuit, so that there is no need to discharge the pixel circuit of the previous display stage, and the original power can be directly used, and on this basis, the additional power required can be further supplemented, which can be used for display in the next display stage, thereby improving the problem of power consumption waste.

[0016] In some embodiments, the processing unit is further configured to, when the comparison result is that the data voltage corresponding to the target data of the next frame is less than or equal to the data voltage corresponding to the target data of the previous frame, not output the data difference to the display driving unit, and the display driving unit does not output the data voltage. In this embodiment, in the next display stage, it is not necessary to charge the pixel circuit, thereby improving the problem of power consumption waste.

[0017] In some embodiments, the plurality of pixel circuits include a first pixel circuit and a second pixel circuit, and the control device includes a transfer control circuit; the transfer control circuit is electrically connected between the first pixel circuit and the second pixel circuit, and the transfer control circuit is used to transfer the amount of electricity in the first pixel circuit to the second pixel circuit based on a first control signal, and to transfer the amount of electricity in the second pixel circuit to the first pixel circuit based on a second control signal. By adding a transfer control circuit, the amount of electricity stored in adjacent rows can be transferred. For example, after the storage capacitor of the original pixel is discharged, it can be recharged through the transfer control circuit, so that the redundant information between the pixel circuits can be utilized, thereby improving the problem of power consumption waste.

[0018] In some embodiments, the storage subcircuit in the first pixel circuit is a first storage subcircuit, the first pixel circuit further includes a first driving subcircuit, the first end of the first storage subcircuit is electrically connected to the control end of the first driving subcircuit, and the second end of the first storage subcircuit is electrically connected to the first end of the first driving subcircuit; the storage subcircuit in the second pixel circuit is a second storage subcircuit, the second pixel circuit further includes a second driving subcircuit, the first end of the second storage subcircuit is electrically connected to the control end of the second driving subcircuit, and the second end of the second storage subcircuit is electrically connected to the first end of the second driving subcircuit; the transfer control circuit includes a first transfer circuit and a first control circuit, the first transfer circuit is electrically connected to the first end of the second storage subcircuit, the second end of the second storage subcircuit and the first end of the first control circuit, the second end of the first control circuit is electrically connected to the first end of the first storage subcircuit, and the control end of the first control circuit is used to receive the first control signal; the transfer control circuit further includes a second transfer circuit and a second control circuit, the second transfer circuit is electrically connected to the first end of the first storage subcircuit, the second end of the first storage subcircuit and the first end of the second control circuit, the second end of the second control circuit is electrically connected to the first end of the second storage subcircuit, and the control end of the second control circuit is used to receive the second control signal. With such an arrangement, the first transfer circuit and the first control circuit can be used to transfer the charge in the first pixel circuit to the second pixel circuit, and the second transfer circuit and the second control circuit can be used to transfer the charge in the second pixel circuit to the first pixel circuit.

[0019] In some embodiments, the first transfer circuit includes a first operational amplifier, and the first control circuit includes a first control transistor; the in-phase input terminal of the first operational amplifier is grounded, the inverting input terminal is electrically connected to the first terminal of the second storage subcircuit and the first electrode of the first control transistor, the output terminal is electrically connected to the second terminal of the second storage subcircuit, the second electrode of the first control transistor is electrically connected to the first terminal of the first storage subcircuit, and the control electrode of the first control transistor is used to receive a first control signal. In this way, an inverter can be formed between the first pixel circuit and the second pixel circuit. The in-phase input terminal of the first operational amplifier is grounded, the inverting input terminal is virtually shorted to the in-phase input terminal, and the inverting input terminal has a high resistance and is in a virtual off state. When the first control transistor is turned on under the control of the first control signal, since the output terminal of the first operational amplifier is connected to the other end of the second storage subcircuit, the current can flow from the first node of the first pixel circuit to the first node of the second pixel circuit, that is, the amount of electricity in the first storage subcircuit can flow to the second storage subcircuit, and finally the transfer of electricity is realized.

[0020] The second transfer circuit includes a second operational amplifier, and the second control circuit includes a second control transistor; the in-phase input terminal of the second operational amplifier is grounded, the inverting input terminal is electrically connected to the first terminal of the first storage subcircuit and the first electrode of the second control transistor, the output terminal is electrically connected to the second terminal of the first storage subcircuit, the second electrode of the second control transistor is electrically connected to the first terminal of the second storage subcircuit, and the control electrode of the second control transistor is used to receive a second control signal. In this way, an inverter can be formed between the first pixel circuit and the second pixel circuit. The in-phase input terminal of the second operational amplifier is grounded, the inverting input terminal is virtually shorted to the in-phase input terminal, and the inverting input terminal has a high resistance and is in a virtual off state. When the second control transistor is turned on under the control of the second control signal, since the output terminal of the second operational amplifier is connected to the other end of the first storage subcircuit, the current can flow from the first node of the second pixel circuit to the first node of the first pixel circuit, that is, the amount of electricity in the second storage subcircuit can flow to the first storage subcircuit, and finally the transfer of electricity is realized.

[0021] In some embodiments, the control device further includes a processing unit and a display driving unit. The processing unit is used to determine the sliding information based on the sliding function if it detects that a sliding function is called when drawing each frame of the image; the display driving unit is electrically connected between the processing unit and the transfer control circuit, and the display driving unit is used to output the first control signal or the second control signal to the transfer control circuit based on the sliding information. In this embodiment, the first control signal or the second control signal output to the transfer control circuit can be controlled according to the sliding information. Thereby, the charging and discharging process can be quickly realized during the sliding display process, and since the redundant power between the pixel circuits is utilized, the problem of power consumption waste can be well improved.

[0022] In some embodiments, the sliding information includes a sliding area and a sliding distance, and the display driving unit is used to output the first control signal or the second control signal to the transfer control circuit connected to the pixel circuit in the sliding area, and control the frequency of the output of the first control signal or the second control signal according to the sliding distance. In this example, the area and the moving distance where the redundant information between the pixel circuits during the sliding process are located can be determined based on the sliding information, so as to achieve more precise control, such as controlling the output range (i.e., which transfer control circuits are output to) and frequency (e.g., each time can correspond to the transfer of electricity in one adjacent row), and for areas where there is no redundant information during the sliding process, the above control information can be used to determine the area where the redundant information between the pixel circuits is located. Fig. 22 and Fig.23 The corresponding control method is improved.

[0023] In some embodiments, the control device further includes a discharge control unit electrically connected to the storage subcircuit for discharging the storage subcircuit so that the amount of electricity stored in the storage subcircuit corresponds to the next frame data voltage or the next frame target data. In this way, the storage subcircuit of the pixel circuit can be discharged when the amount of electricity required in the next display stage is lower than the amount of electricity required in the previous display stage.

[0024] In some embodiments, the discharge control unit includes a timing controller, a gate drive circuit, and a discharge sub-circuit, wherein the gate drive circuit is electrically connected between the timing controller and the discharge sub-circuit, and the discharge sub-circuit is electrically connected to the storage sub-circuit. In this configuration, the timing controller can send a target timing signal to the gate drive circuit when discharge is required (for example, when the comparison result is that the voltage of the next frame of data is less than the voltage of the previous frame of data), and the gate drive circuit can output a second scan control signal through the second scan control line based on the target timing signal to control the discharge sub-circuit to discharge the storage sub-circuit.

[0025] In some embodiments, the display device includes a display panel and a flexible circuit board connected to the display panel, the plurality of pixel circuits are located in the display panel, and the voltage comparator is located in the display panel or the flexible circuit board. Such an arrangement makes the setting position of the voltage comparator more reasonable and is less likely to affect other components. In addition, when the voltage comparator is set on the flexible circuit board, since the flexible circuit board can be bent on the back of the display panel, it is also beneficial for the display device to achieve a narrow frame.

[0026] In some embodiments, the display device includes a display panel and a flexible circuit board connected to the display panel, the plurality of pixel circuits are located in the display panel, and the selection switch is located in the display panel or the flexible circuit board. Such an arrangement makes the setting position of the selection switch more reasonable and is less likely to affect other components. In addition, when the selection switch is set on the flexible circuit board, since the flexible circuit board can be bent on the back of the display panel, it is also beneficial for the display device to achieve a narrow frame.

[0027] In some embodiments, the display device includes a display panel and a flexible circuit board connected to the display panel, the plurality of pixel circuits are located in the display panel, and the display driver chip is located in the display panel or the flexible circuit board. Such an arrangement makes the display driver chip more reasonably positioned and less likely to affect other components. Moreover, when the display driver chip is arranged on the flexible circuit board, since the flexible circuit board can be bent on the back of the display panel, it is also beneficial for the display device to achieve a narrow frame.

[0028] In some embodiments, the processing unit includes an application processor, and the display driving unit includes a display driving chip. With such an arrangement, there is no need to add an additional structure to the display device, making its structure simpler.

[0029] In some embodiments, the processing unit and the display driver unit are integrated in an application processor. In this way, a display driver chip can be omitted, making the structure of the display device simpler.

[0030] In a second aspect, a display panel is provided, comprising: a plurality of pixel circuits and a voltage comparator; the voltage comparator is electrically connected between a data voltage line and the pixel circuit; the voltage comparator is used to compare two adjacent frames of data voltage transmitted by the data voltage line, and when the comparison result is that the data voltage of the latter frame is greater than the data voltage of the previous frame, output the difference between the two adjacent frames of data voltage to the pixel circuit.

[0031] The display panel provided in the embodiment of the present application is provided with a voltage comparator, so that in the subsequent display stage, the amount of electricity stored in the storage subcircuit of the pixel circuit in the subsequent display stage can be controlled, including at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage. In this way, at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage can be reused, that is, it can be applied to a certain pixel circuit in the subsequent display stage. Compared with the related art that requires charging and discharging in each display stage, the redundant information between the two display stages can be effectively utilized, thereby achieving the purpose of reducing power consumption waste.

[0032] In some embodiments, the voltage comparator is further configured to not output voltage to the pixel circuit when the comparison result is that the voltage of the next frame data is less than or equal to the voltage of the previous frame data. In this embodiment, in the next display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0033] In some embodiments, the voltage comparator includes a non-inverting input terminal, a reverse input terminal and an output terminal, wherein the non-inverting input terminal is electrically connected to a data voltage line, the reverse input terminal is electrically connected to another data voltage line, and the output terminal is electrically connected to the pixel circuit; wherein the data voltage line is used to transmit the data voltage of the previous frame, and the other data voltage line is used to transmit the data voltage of the next frame. With such a configuration, two data voltage lines can be used to transmit two adjacent frames of data voltage to the voltage comparator in a time-sharing manner for comparison by the voltage comparator.

[0034] Exemplarily, the voltage comparator may be a LM393 chip.

[0035] In some embodiments, the display panel further includes a selection switch, the voltage comparator includes a same-direction input terminal, a reverse input terminal and an output terminal; the selection switch is electrically connected between the data voltage line, the same-direction input terminal and the reverse input terminal, and the selection switch is used to output the previous frame data voltage to the same-direction input terminal and the next frame data voltage to the reverse input terminal in a time-sharing manner. In this way, the number of data voltage lines can be reduced, for example, reduced by half. This is conducive to simplifying the structure, and the voltage comparator can also receive two adjacent frames of data voltage in a time-sharing manner and compare them.

[0036] In a third aspect, a display panel is provided, comprising: a plurality of pixel circuits and a transfer control circuit, the plurality of pixel circuits comprising a first pixel circuit and a second pixel circuit; the transfer control circuit is electrically connected between the first pixel circuit and the second pixel circuit, and the transfer control circuit is used to transfer the amount in the first pixel circuit to the second pixel circuit based on a first control signal, and to transfer the amount in the second pixel circuit to the first pixel circuit based on a second control signal.

[0037] In this embodiment, by adding a transfer control circuit, the electricity stored in adjacent rows can be transferred. For example, after the storage capacitor of the original pixel is discharged, it can be recharged through the transfer control circuit, so that the redundant information between pixel circuits can be used to improve the problem of power consumption waste.

[0038] In some embodiments, the storage subcircuit in the first pixel circuit is a first storage subcircuit, the first pixel circuit further includes a first driving subcircuit, the first end of the first storage subcircuit is electrically connected to the control end of the first driving subcircuit, and the second end of the first storage subcircuit is electrically connected to the first end of the first driving subcircuit; the storage subcircuit in the second pixel circuit is a second storage subcircuit, the second pixel circuit further includes a second driving subcircuit, the first end of the second storage subcircuit is electrically connected to the control end of the second driving subcircuit, and the second end of the second storage subcircuit is electrically connected to the first end of the second driving subcircuit; the transfer control circuit includes a first transfer circuit and a first control circuit, the first transfer circuit is electrically connected to the first end of the second storage subcircuit, the second end of the second storage subcircuit and the first end of the first control circuit, the second end of the first control circuit is electrically connected to the first end of the first storage subcircuit, and the control end of the first control circuit is used to receive the first control signal; the transfer control circuit further includes a second transfer circuit and a second control circuit, the second transfer circuit is electrically connected to the first end of the first storage subcircuit, the second end of the first storage subcircuit and the first end of the second control circuit, the second end of the second control circuit is electrically connected to the first end of the second storage subcircuit, and the control end of the second control circuit is used to receive the second control signal. With such an arrangement, the first transfer circuit and the first control circuit can be used to transfer the charge in the first pixel circuit to the second pixel circuit, and the second transfer circuit and the second control circuit can be used to transfer the charge in the second pixel circuit to the first pixel circuit.

[0039] In some embodiments, the first transfer circuit includes a first operational amplifier, and the first control circuit includes a first control transistor; the in-phase input terminal of the first operational amplifier is grounded, the inverting input terminal is electrically connected to the first terminal of the second storage subcircuit and the first electrode of the first control transistor, the output terminal is electrically connected to the second terminal of the second storage subcircuit, the second electrode of the first control transistor is electrically connected to the first terminal of the first storage subcircuit, and the control electrode of the first control transistor is used to receive a first control signal. In this way, an inverter can be formed between the first pixel circuit and the second pixel circuit. The in-phase input terminal of the first operational amplifier is grounded, the inverting input terminal is virtually shorted to the in-phase input terminal, and the inverting input terminal has a high resistance and is in a virtual off state. When the first control transistor is turned on under the control of the first control signal, since the output terminal of the first operational amplifier is connected to the other end of the second storage subcircuit, the current can flow from the first node of the first pixel circuit to the first node of the second pixel circuit, that is, the amount of electricity in the first storage subcircuit can flow to the second storage subcircuit, and finally the transfer of electricity is realized.

[0040] In some embodiments, the second transfer circuit includes a second operational amplifier, and the second control circuit includes a second control transistor; the in-phase input terminal of the second operational amplifier is grounded, the inverting input terminal is electrically connected to the first terminal of the first storage subcircuit and the first electrode of the second control transistor, the output terminal is electrically connected to the second terminal of the first storage subcircuit, the second electrode of the second control transistor is electrically connected to the first terminal of the second storage subcircuit, and the control electrode of the second control transistor is used to receive a second control signal. In this way, an inverter can be formed between the first pixel circuit and the second pixel circuit. The in-phase input terminal of the second operational amplifier is grounded, the inverting input terminal is virtually shorted to the in-phase input terminal, and the inverting input terminal has a high resistance and is in a virtual off state. When the second control transistor is turned on under the control of the second control signal, since the output terminal of the second operational amplifier is connected to the other end of the first storage subcircuit, the current can flow from the first node of the second pixel circuit to the first node of the first pixel circuit, that is, the amount of electricity in the second storage subcircuit can flow to the first storage subcircuit, and finally the transfer of electricity is realized.

[0041] In a fourth aspect, a display driver chip is provided, the display driver chip is used to: compare the voltages of two adjacent frames of data, and when the comparison result is that the voltage of the data of the next frame is greater than the voltage of the data of the previous frame, the difference between the voltages of the data of the two adjacent frames is output to the pixel circuit via the data voltage line, and when the comparison result is that the voltage of the data of the next frame is less than or equal to the voltage of the data of the previous frame, no voltage is output to the pixel circuit. With such a configuration, at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage can be reused, that is, it can be applied to a certain pixel circuit in the next display stage. Compared with the related art that each display stage needs to be charged and discharged, the redundant information between the two display stages can be effectively utilized, thereby achieving the purpose of reducing power consumption waste. And because the voltage comparison function is moved up to the display driver chip, the comparison function can be realized by software, for example, at this time, which can make the structure simpler.

[0042] In a fifth aspect, an application processor is provided, the application processor being used to compare target data corresponding to the same pixel circuit in two adjacent frames of image data, and outputting a data difference between the two adjacent frames of target data when the comparison result is that the data voltage corresponding to the target data of the latter frame is greater than the data voltage corresponding to the target data of the previous frame; and not outputting the data difference when the comparison result is that the data voltage corresponding to the target data of the latter frame is less than or equal to the data voltage corresponding to the target data of the previous frame. In this embodiment, the voltage comparison function can be moved up to the application processor, and at this time, for example, the comparison function can be implemented by software and / or hardware, which can make the structure simpler.

[0043] In a sixth aspect, a display driver chip is used to output the first control signal or the second control signal to the display panel based on sliding information. The display driver chip provided in this embodiment can output a control signal for controlling the aforementioned transfer control circuit. That is, the first control signal or the second control signal output to the transfer control circuit can be controlled according to the sliding information. Thus, the charging and discharging process can be quickly realized during the sliding display process, and since the redundant power between pixel circuits is utilized, the problem of power consumption waste can be well improved.

[0044] In some embodiments, the sliding information includes a sliding area and a sliding distance, and the display driver chip is used to output the first control signal or the second control signal to the transfer control circuit connected to the pixel circuit in the sliding area, and control the frequency of the output of the first control signal or the second control signal according to the sliding distance. In this embodiment, the display driver chip can determine the area and moving distance where the redundant information between the pixel circuits and the pixel circuits during the sliding process is located according to the sliding information, so as to achieve more precise control, such as controlling the output range (i.e., which transfer control circuits are output to) and frequency (such as each time corresponding to the transfer of electricity of an adjacent row).

[0045] In the seventh aspect, an application processor is provided, which is used to determine sliding information based on the sliding function when drawing each frame of an image, if a sliding function is detected, and output the first control signal or the second control signal to the display panel based on the sliding information. The application processor provided in this embodiment can output a control signal for controlling the aforementioned transfer control circuit. That is, the first control signal or the second control signal output to the transfer control circuit can be controlled according to the sliding information. Thereby, the charging and discharging process can be quickly realized during the sliding display process, and since the redundant power between pixel circuits is utilized, the problem of power consumption waste can be well improved.

[0046] In some embodiments, the sliding information includes a sliding area and a sliding distance, and the application processor is used to output the first control signal or the second control signal to the transfer control circuit connected to the pixel circuit in the sliding area, and control the frequency of the output of the first control signal or the second control signal according to the sliding distance. In this embodiment, the application processor can determine the area and moving distance where the redundant information between the pixel circuits and the pixel circuits during the sliding process is located according to the sliding information, so as to achieve more precise control, such as controlling the output range (i.e., which transfer control circuits are output to) and frequency (e.g., each time can correspond to the transfer of electricity of an adjacent row).

[0047] In an eighth aspect, a display screen is provided, comprising: an electrically connected display driver chip and a display panel; wherein the display panel is the display panel in any of the preceding items; and / or the display driver chip is the display driver chip in any of the preceding embodiments. Since the display screen provided by this embodiment comprises the display panel in any of the preceding embodiments, or comprises the display driver chip in any of the preceding embodiments, it has the technical effects corresponding to the preceding ones, and will not be described in detail here.

[0048] In a ninth aspect, a control method for a display device is provided, wherein the display device includes a plurality of pixel circuits, and the pixel circuit includes a storage subcircuit, and the control method includes: in two adjacent display stages, controlling the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage to include at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage. In this way, during the display process of the display device, the power consumption waste caused by redundancy between frames and the power consumption waste caused by redundancy between pixel circuits can be improved.

[0049] In some embodiments, in two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage is controlled, including at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, including: comparing the voltages of two adjacent frames of data, and when the comparison result is that the voltage of the latter frame of data is greater than the voltage of the previous frame of data, outputting the difference between the voltages of the two adjacent frames of data to the pixel circuit. In this embodiment, when the voltage of the latter frame of data is greater than the voltage of the previous frame of data, the difference between the voltages of the two adjacent frames of data can be output to the pixel circuit, so that there is no need to discharge the pixel circuit in the previous display stage, and the original amount of electricity can be directly used, and on this basis, the additional amount of electricity required can be further supplemented, which can be used for display in the latter display stage, thereby improving the problem of power consumption waste.

[0050] In some embodiments, in two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit in the next display stage is controlled, including at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, and further comprising: when the comparison result is that the voltage of the next frame data is less than or equal to the voltage of the previous frame data, no voltage is output to the pixel circuit. In this embodiment, in the next display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0051] In some embodiments, the pixel circuit further includes a discharge subcircuit, which is electrically connected to the storage subcircuit; in the two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit during the next display stage is controlled, including at least part of the electricity stored in the storage subcircuit of any pixel circuit during the previous display stage, and further includes: when the comparison result is that the voltage of the next frame data is less than the voltage of the previous frame data, the discharge subcircuit is controlled to discharge the storage subcircuit so that the amount of electricity stored in the storage subcircuit corresponds to the voltage of the next frame data. In this example, in order to realize the display of the next display stage, the storage subcircuit can be discharged. The discharge here refers to discharging part of the electricity so that it directly corresponds to the next display stage. Compared with the method of discharging all the electricity and then charging in the related art, the problem of power consumption waste can be effectively improved.

[0052] In some embodiments, in the two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage is controlled, including at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, including: comparing the target data corresponding to the same pixel circuit in two adjacent frames of image data, and when the comparison result is that the data voltage corresponding to the target data of the latter frame is greater than the data voltage corresponding to the target data of the previous frame, obtaining the data difference between the target data of the two adjacent frames, obtaining the compensation voltage based on the data difference, and outputting the compensation voltage to the pixel circuit. In this embodiment, when the data voltage corresponding to the target data of the latter frame is greater than the data voltage corresponding to the target data of the previous frame, the data difference between the target data of the two adjacent frames can be obtained, and then the compensation voltage is obtained based on the data difference, and the compensation voltage is output to the pixel circuit, so that there is no need to discharge the pixel circuit in the previous display stage, and the original amount of electricity can be directly used, and on this basis, the additional amount of electricity required can be further supplemented, which can be used for display in the next display stage, thereby improving the problem of power consumption waste.

[0053] In some embodiments, in two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit in the next display stage is controlled, including at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, including: when the comparison result is that the data voltage corresponding to the target data of the next frame is less than or equal to the data voltage corresponding to the target data of the previous frame, the data difference is not output. In this embodiment, in the next display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0054] In some embodiments, the pixel circuit further includes a discharge subcircuit, which is electrically connected to the storage subcircuit; in the two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit during the next display stage is controlled, including at least part of the electricity stored in the storage subcircuit of any pixel circuit during the previous display stage, and further includes: when the comparison result is that the data voltage corresponding to the target data of the next frame is less than the data voltage corresponding to the target data of the previous frame, the discharge subcircuit is controlled to discharge the storage subcircuit so that the amount of electricity in the storage subcircuit corresponds to the target data of the next frame. In this example, in order to realize the display of the next display stage, the storage subcircuit can be discharged. The discharge here refers to discharging part of the electricity so that it directly corresponds to the next display stage. Compared with the method of discharging all the electricity and then charging in the related art, the problem of power consumption waste can be effectively improved.

[0055] In some embodiments, the plurality of pixel circuits include a first pixel circuit and a second pixel circuit; the display device further includes a transfer control unit; in two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit during the latter display stage is controlled, including at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit during the previous display stage, including: when drawing each frame of the image, if a sliding function is monitored, the sliding information is determined based on the sliding function; based on the sliding information, a first control signal or a second control signal is output to the transfer control unit; the first control signal is used to enable the transfer control unit to transfer the amount of electricity in the first pixel circuit to the second pixel circuit, and the second control signal is used to enable the transfer control unit to transfer the amount of electricity in the second pixel circuit to the first pixel circuit. In this embodiment, the first control signal or the second control signal output to the transfer control circuit can be controlled according to the sliding information. Thereby, the charging and discharging process can be quickly realized during the sliding display process, and since the redundant amount of electricity between the pixel circuits is utilized, the problem of power consumption waste can be well improved.

[0056] In some embodiments, the sliding information includes a sliding area and a sliding distance, and the outputting of the first control signal or the second control signal to the transfer control unit based on the sliding information includes: outputting the first control signal or the second control signal to the transfer control unit connected to the pixel circuit in the sliding area; and controlling the frequency of outputting the first control signal or the second control signal according to the sliding distance.

[0057] In this example, the area and movement distance of redundant information between pixel circuits during the sliding process can be determined based on the sliding information, so as to achieve more precise control, such as controlling the output range (i.e., which transfer control circuits are output to) and frequency (e.g., each time can correspond to the transfer of electricity in one adjacent row) of the first control signal or the second control signal.

[0058] In the tenth aspect, an embodiment of the present application provides a computer storage medium, which stores a computer program. When the computer program runs on a computer (for example, a display device), it implements the fourth aspect of the embodiment of the present application, as well as the display method provided by any implementation method of the fourth aspect.

[0059] In the eleventh aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on a computer (for example, a display device), the computer executes the display method provided by the fourth aspect of the embodiment of the present application and any one of the implementations of the fourth aspect.

[0060] In the twelfth aspect, an embodiment of the present application provides a computer program, which, when executed on a computer (e.g., a display device), enables the computer to execute the display method provided in the fourth aspect of the embodiment of the present application and any one of the implementations of the fourth aspect.

[0061] In a thirteenth aspect, an embodiment of the present application provides another display device, the display device comprising a method or apparatus for executing any embodiment of the present application. The above display device is, for example, a chip or a terminal product.

[0062] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 A structural block diagram of a display device provided in an embodiment of the present application;

[0064] Figure 2Another structural block diagram of a display device provided in an embodiment of the present application;

[0065] Figure 3 A structural diagram of a display panel provided in an embodiment of the present application;

[0066] Figure 4 A circuit diagram of a display unit provided in an embodiment of the present application;

[0067] Figure 5 A structural diagram of a pixel circuit and a light-emitting unit provided in some embodiments of the present application;

[0068] Figure 6 A diagram of the charging and discharging process of a storage subcircuit in two adjacent frame display stages provided by an embodiment of the present application;

[0069] Figure 7 A diagram showing a changing state of a display screen in two adjacent frame display stages provided by an embodiment of the present application;

[0070] Figure 8 A diagram showing another changing state of a display screen in two adjacent frame display stages provided in an embodiment of the present application;

[0071] Fig. 9 A structural block diagram of a display device provided in an embodiment of the present application;

[0072] Fig.10 A structural diagram of a display device provided in an embodiment of the present application;

[0073] Fig.11 A structural diagram of another display device provided in an embodiment of the present application;

[0074] Fig.12 A structural diagram of a discharge control unit provided in an embodiment of the present application;

[0075] Fig.13 A structural diagram of an LM393 chip provided in an embodiment of the present application;

[0076] Fig.14 This is a structural diagram of the display panel and the flexible circuit board after being connected in the embodiment of the present application;

[0077] Fig.15 A structural diagram of another display device provided in an embodiment of the present application;

[0078] Fig.16 A structural diagram of another display device provided in an embodiment of the present application;

[0079] Fig.17 A structural diagram of another display device provided in an embodiment of the present application;

[0080] Fig.18 A schematic diagram of another display screen provided in an embodiment of the present application;

[0081] Fig.19 A structural diagram of another display device provided in an embodiment of the present application

[0082] Fig. 20 A structural diagram of another display device provided in an embodiment of the present application;

[0083] Fig.21 A schematic diagram of another display screen provided in an embodiment of the present application;

[0084] Fig. 22 A flowchart of a method for controlling a display device provided in an embodiment of the present application;

[0085] Fig.23 A flowchart of another method for controlling a display device provided in an embodiment of the present application;

[0086] Fig.24 A flowchart of another method for controlling a display device provided in an embodiment of the present application;

[0087] Fig.25 A flowchart of another method for controlling a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0088] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0089] In the following, the terms "first", "second", etc. are used only for convenience of description and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0090] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "electrical connection" may refer to a direct electrical connection or an indirect electrical connection via an intermediate medium.

[0091] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0092] In the embodiments of the present application, "and / or" describes the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0093] The display device involved in the embodiments of the present application can be a mobile terminal such as a mobile phone, a tablet computer, a handheld computer, a personal digital assistant (PDA), a smart home device such as a smart TV, a smart camera, a wearable device such as a smart bracelet, a smart watch, a smart glasses, or other desktop, laptop, notebook computer, ultra-mobile personal computer (UMPC), netbook, smart screen and other devices.

[0094] See also Figure 1 , Figure 1 The display device 1000 provided in the embodiment of the present application is a structural block diagram. The display device 1000 may include a processing unit 10, a display driving unit 20 and a display panel 30.

[0095] The processing unit 10 may include one or more processors, for example: the processing unit 10 may include an application processor (AP), a modem processor, a graphics processor (GPU), a central processing unit (CPU), an image signal processor (ISP), a microcontroller unit (MCU), a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processor (NPU), etc. Among them, different processors can be integrated into one device or can be independent devices. For example, the multiple processors shown above can all be integrated into a system on chip (SoC), or the application processor AP can be a separate chip and other processors can be integrated into a SoC, which is not limited in this application.

[0096] A memory (not shown) may also be provided in the processing unit 10 for storing instructions and data. In some embodiments, the memory in the processing unit 10 is a cache memory. The memory may store instructions or data that have just been used or are cyclically used by the processing unit 10. If the processing unit 10 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processing unit 10, and thus improves the efficiency of the system.

[0097] The processing unit 10 may also include one or more communication interfaces (referred to as interfaces). The interfaces may include, for example but not limited to: an Inter-Integrated Circuit (I2C) interface, an Inter-Integrated Circuit Sound (I2S) interface, a Pulse Code Modulation (PCM) interface, a Universal Asynchronous Receiver / Transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI) interface, a General-Purpose Input / Output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and / or a Universal Serial Bus (USB) interface, etc.

[0098] Among them, the MIPI interface can be used to connect the processing unit 10 with devices such as a camera and a display screen 200. In some embodiments, the MIPI interface may include a display serial interface (DSI), a camera serial interface (CSI), etc. Optionally, the processing unit 10 and the camera communicate via a CSI interface to implement the shooting function of the display device. Optionally, the processing unit 10 and the display screen 200 communicate via a DSI interface to implement the display function of the display device. Among them, the display screen 200 may include the above-mentioned display driver unit 20 and a display panel 30. The processing unit 10 may communicate with the display driver unit 20 in the display screen 200 via a DSI interface. Here, the display driver unit 20 may be integrated on the display panel 30, or may be arranged on a circuit board connected to the display panel 30. The circuit board here may be, for example, a flexible circuit board, and the display driver unit 20 may be encapsulated on the flexible circuit board by a chip-on-film. Of course, in some other embodiments, it can also be set on a hard circuit board (such as a main control board) connected to the flexible circuit board (such as plugged in), or the display drive unit 20 and the processing unit 10 can be directly integrated into the same SoC, and the present application does not impose any restrictions on this.

[0099] It is understandable that the interface connection relationship between the structures and units illustrated in the embodiments of the present application is only a schematic illustration and does not constitute a structural limitation on the display device 1000. In other embodiments of the present application, the display device 1000 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0100] Figure 2 Another structural block diagram of the display device 1000 provided in an embodiment of the present application.

[0101] Combination Figure 1 and Figure 2As shown, the processing unit 10 may be an application processor AP, in which a GPU, a CPU and an ISP are integrated. The display device 1000 may be connected to a display screen 200 via an application processor AP to realize a display function. The application processor AP may obtain display information from, for example, a random access memory via a double data rate (DDR), and then process the display information via a GPU, a CPU and an ISP to generate image data, and then output the image data using a MIPI interface. The GPU in the application processor AP is a microprocessor for image processing. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The application processor AP may include one or more GPUs that execute program instructions to generate or change display information, such as drawing images, changing the image scaling, color, and high dynamic range imaging (English: High Dynamic Range Imaging, HDRI or HDR for short), etc.

[0102] The display screen 200 is used to display images, videos, etc. As described above, the display screen 200 may include a display driving unit 20 and a display panel 30. In some examples, such as Figure 2As shown, the display driver unit 20 may be a display driver chip (DisplayDriver Integrated Circuit, DDIC). DDIC is a device inside the display screen 200 for controlling the operation of the display screen. For example, DDIC may generate a certain electrical signal to control the display panel 30 to display an image. Exemplarily, DDIC may receive image data through a MIPI interface, and then process the image data through a demura module to remove mura (mura refers to uneven display brightness, traces, such as dark lines and other phenomena). Then, the image data may be converted through a gamma module to generate a voltage signal. Finally, the source driver module may output the generated voltage signal as a data voltage to the display panel 30 according to a certain driving sequence. Among them, any one of the demura module and the gamma module may be implemented by a software algorithm or by designing a hardware circuit, and this application is not limited thereto. The source driver module may be a source driver circuit, for example, it may be used to output corresponding data voltages to multiple columns of pixel circuits in the display panel 30. The display panel 30 may be an organic light-emitting diode (OLED) panel, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) panel, a flexible light-emitting diode (FLED) panel, a quantum dot light-emitting diode (QLED) panel, etc. Figure 1 In some embodiments, the display panel 30 is an OLED panel. In some embodiments, the display device 1000 may include 1 or N display screens, where N is a positive integer greater than 1. In some embodiments, a display screen may include 1 or N DDICs. Figure 1 and Figure 2 As shown, the processing unit 10 is an application processor AP, the display driving unit 20 is a display driving chip DDIC, and the display panel 30 is an OLED panel. The application processor AP is electrically connected to the display driving chip DDIC, and the display driving chip DDIC is also electrically connected to the OLED panel.

[0103] Figure 3A structural diagram of a display panel 30 provided in an embodiment of the present application. The display panel 30 includes a display area (full name in English: Active Area, referred to as AA area; also referred to as effective display area) AA. The display area AA includes a plurality of sub-pixels P, and the plurality of sub-pixels P can be arranged in an array. The sub-pixel P is the smallest unit for the display panel 30 to display an image.

[0104] In some examples, a sub-pixel P includes a pixel circuit and a light-emitting unit electrically connected to the pixel circuit. The pixel circuit can be adjusted based on a plurality of different types of signal lines to generate a drive signal, and each light-emitting unit can emit light under the driving action of the drive signal generated by the corresponding pixel circuit. Based on this, the corresponding light-emitting unit can be driven to emit light by the pixel circuit in a plurality of sub-pixels, so that the display panel 30 can display a predetermined image in the display area AA. Specifically, the plurality of sub-pixels P can include a plurality of sub-pixels P with different luminous colors. Exemplarily, the plurality of sub-pixels P can include a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively used to emit three primary colors of light, for example, the first sub-pixel can emit red light, the second sub-pixel can emit green light, and the third sub-pixel can emit blue light. Based on this, the brightness (grayscale) of the sub-pixels P of different colors can be adjusted, and the display of multiple colors can be achieved by color combination and superposition, thereby realizing the full-color display of the display panel 30.

[0105] Continue reading Figure 3 , Figure 3 The display panel 30 in the embodiment may further include a peripheral area BB, and the peripheral area BB may be located on at least one side of the display area AA, for example Figure 3 The peripheral area BB is located around the display area AA. The peripheral area BB can be used to arrange some signal lines, test circuits, gate drive circuits, etc. Here, the gate drive circuit can also be arranged in the display area AA, such as scattered in each sub-pixel row, and the present application may not limit the setting position of the gate drive circuit.

[0106] Figure 4 The circuit diagram of the display unit (including three pixel circuits and a light-emitting unit OLED located in three sub-pixels P) provided in the embodiment of the present application is shown in FIG. Figure 4As shown, the display panel 30 may include a plurality of display units consisting of red, green and blue sub-pixels P. Among them, the most simplified structure of each pixel circuit (taking the pixel circuit of the red sub-pixel on the far left in the figure as an example) is composed of a storage capacitor Cs and two thin film transistors (TFT) T1 and T2. T2 constitutes a constant current source to drive the OLED to emit light. The magnitude of the current is controlled by the magnitude of the storage capacitor Cs, thereby controlling the luminous intensity. The screen image display is mainly determined by the ratio of the luminous intensity of the three OLEDs, red, blue and green, and the luminous intensity of the OLED is determined by the storage capacitor Cs. Therefore, a large part of the power consumption of the screen is consumed in charging the storage capacitor.

[0107] Figure 5 The structure diagram of the pixel circuit and the light-emitting unit provided in some embodiments of the present application. Among them, the pixel circuit 40 may include a storage subcircuit 401, a driving subcircuit 402, a switch subcircuit 403 and a discharge subcircuit 404. The storage subcircuit 401, the driving subcircuit 402, the switch subcircuit 403 and the discharge subcircuit 404 are electrically connected to the first node N1, and the storage subcircuit 401, the driving subcircuit 402 are electrically connected to the first voltage terminal Vdd, and the driving subcircuit 402 is also electrically connected to the OLED. The switch subcircuit 403 is electrically connected to the data voltage line Vdata and the first scan control line Vgate. In the writing stage, the switch subcircuit 403, under the control of the first scan control line Vgate1, transmits the data voltage transmitted by the data voltage line Vdata to the first node N1, thereby charging the storage subcircuit 401. In the light-emitting stage, the driving subcircuit 402 is turned on under the control of the first node N1 and the first voltage terminal Vdd, and outputs the driving voltage to the OLED. The amount of electricity stored in the storage subcircuit 401 can maintain the voltage of the first node N1 for a period of time to maintain the conduction of the driving subcircuit 402 and ensure that the OLED emits light normally. In addition, the pixel circuit 40 also includes an initialization stage, at which the discharge subcircuit 404 transmits the initialization voltage Vinit to the first node N1 under the control of the second scanning control line Vgate2 to refresh the voltage of the first node N1. Among them, the storage subcircuit 401 can be a storage capacitor Cs, the driving subcircuit 402 can be a thin film transistor T2, the switch subcircuit 403 can be a thin film transistor T1, and the discharge subcircuit 404 can be a thin film transistor T3. In some examples, the above initialization stage, writing stage and light-emitting stage can be called a display stage.

[0108] During the display process, the display screen 200 will refresh the display screen at a certain refresh rate. Taking a refresh rate of 120 Hz as an example, the display screen 200 is refreshed every 8.3 ms. Figure 5It can be seen from the embodiments that when some display screens refresh the next frame, it is necessary to avoid the influence of the current frame on the next frame, for example, Figure 5 The discharge subcircuit 404 shown in the figure makes the storage subcircuit 401 of each subpixel discharge all the electricity stored in the current frame, perform complete initialization, and then perform a new charge to the electricity required for the next frame, that is, Figure 6 As indicated, Figure 6 The charging and discharging process of the storage sub-circuit in two adjacent frame display stages provided in the embodiment of the present application.

[0109] The inventor of the present application has further studied and found that in the above driving method, the frames of the pixel circuits and the pixel circuits are completely decoupled, but in fact there is redundant information between frames and pixel circuits. Losing all this information will cause all pixel circuits to be recharged and discharged every time the current refresh occurs, so the current charging and discharging method of the pixel circuits wastes a lot of power. For example Figure 7 As shown, Figure 7 A diagram of the changing state of the displayed picture in the display stage of two adjacent frames provided in an embodiment of the present application. It can be seen in the figure that the positions of the pixels E1 and E2 marked in the two frames are the same, so the required data voltage is equal, and the amount of electricity required by the storage capacitor is also consistent, so there is actually no need to charge and discharge the storage capacitor at that point. However, since some pixel circuits cannot utilize redundant information between frames, all the electricity currently stored in the storage capacitor will still be discharged, and the storage capacitor will be recharged to the amount required for the next frame, which is the waste of power consumption caused by redundancy between frames. Therefore, in many application scenarios, many pixel points have not changed between the two frames (which can be called non-dirty areas), but a new charge and discharge still occurs, resulting in a waste of power consumption. In addition, for example Figure 8 As shown, Figure 8 Another changing state diagram of the display screen in the display stage of two adjacent frames provided in the embodiment of the present application is for the sliding scenarios that are often involved in the user's use process. In this scenario, for most of the pictures, sliding only causes the content of the two adjacent upper and lower rows of pixels to shift, but because the picture of the pixel position of the next frame is completely changed compared to the current frame, each pixel will still be recharged and discharged. Therefore, there is not only power consumption waste caused by redundancy between frames in the OLED pixel circuit, but also power consumption waste caused by redundancy between pixel circuits.

[0110] Based on the above-mentioned problems, the present application provides a display device 1000. Fig. 9 As shown, Fig. 9The structural block diagram of the display device 1000 provided in the embodiment of the present application, the display device 1000 includes a plurality of pixel circuits 40 and a control device 60. The pixel circuit 40 can refer to the above description, or can also be a pixel circuit in other forms, for example, the pixel circuit 40 can include "2T1C", "6T1C", "7T1C", "6T2C", "7T2C" or "8T1C", etc. Here, "T" represents a thin film transistor, and the number in front of "T" represents the number of thin film transistors; "C" represents a storage capacitor (Capacitance), and the number in front of "C" represents the number of storage capacitors C.

[0111] The control device 60 is electrically connected to the pixel circuit 40, and the pixel circuit 40 includes a storage subcircuit 401. The control device 60 is used to: in two adjacent display stages, control the amount of electricity stored in the storage subcircuit 401 of the pixel circuit 40 in the latter display stage, including at least part of the electricity stored in the storage subcircuit 401 of any pixel circuit 40 in the previous display stage. Here, the two display stages may refer to two adjacent display frames (i.e., Figure 7 and Figure 8 As shown), it may also refer to two stages in the same display frame (for example, in a sliding display, when the sliding time is less than the duration of one frame, it is considered that there are multiple display stages in one display frame).

[0112] “The amount of electricity stored in the storage subcircuit 401 of the pixel circuit 40 when controlling the next display stage includes at least part of the amount of electricity stored in the storage subcircuit 401 of any pixel circuit 40 in the previous display stage” includes at least the following four situations:

[0113] Case 1: For the same pixel circuit 40, the power in the storage sub-circuit 401 is controlled not to be released in the previous display stage, and in the next display stage, the previously stored power is used to drive the display.

[0114] Case 2: For the same pixel circuit 40, the power in the storage subcircuit 401 is controlled not to be released in the previous display stage, and in the next display stage, the power is further replenished through the data voltage line Vdata, and then the previously stored power and the newly replenished power are used to drive the display.

[0115] Case 3: For the same pixel circuit 40, a portion of the power in the storage sub-circuit 401 is controlled to be released in the previous display stage, and the remaining power is used to drive the display in the next display stage.

[0116] Case 4: For two pixel circuits 40 (such as the first pixel circuit and the second pixel circuit), the first pixel circuit is controlled to release all the electricity in the storage subcircuit in the previous display stage, and in the next display stage, all the electricity in the storage subcircuit of the second pixel circuit is transferred to the first pixel circuit, and the first pixel circuit uses the transferred electricity to drive the display.

[0117] In the above cases 1-3: the amount of electricity stored in the storage subcircuit 401 of the pixel circuit 40 in the next display stage includes at least part of the electricity stored in the pixel circuit 40 in the previous display stage; in the above case 4: the amount of electricity stored in the storage subcircuit of the first pixel circuit in the next display stage includes all the electricity stored in any other pixel circuit (such as the second pixel circuit) in the previous display stage. The second pixel circuit may be any pixel circuit in the display panel except the first pixel circuit.

[0118] Hereinafter, the control device 60 is introduced in combination with five specific embodiments.

[0119] Embodiment 1: Fig.10 and Fig.11 As shown, Fig.10 A structural diagram of a display device provided in an embodiment of the present application, Fig.11 A structural diagram of another display device provided for an embodiment of the present application. Among them, the control device 60 includes a voltage comparator 601. The voltage comparator 601 is electrically connected between the data voltage line and the pixel circuit (such as the data voltage input terminal of the switch subcircuit 403 of the pixel circuit 40). The voltage comparator 601 is used to compare the data voltages of two adjacent frames, and when the comparison result is that the data voltage of the next frame is greater than the data voltage of the previous frame, the difference between the data voltages of the two adjacent frames is output to the pixel circuit 40. That is, it is equivalent to the above-mentioned situation 2, which can facilitate the remaining power and the newly replenished power in the previous display stage to drive the display. In addition, the voltage comparator 601 can also be used to not output the data voltage to the pixel circuit 40 when the comparison result is that the data voltage of the next frame is less than or equal to the data voltage of the previous frame. That is, it is equivalent to the above-mentioned situation 1 or 3. It can be understood that, in response to the above situation 3, that is, when the comparison result is that the voltage of the data of the next frame is less than the voltage of the data of the previous frame, the storage sub-circuit 401 can be discharged (here, it means discharging part of the electricity) by using the discharge sub-circuit 404 under the control of the second scan control signal output by the second scan control line Vgate2, so that the electricity stored in the storage sub-circuit 401 corresponds to the voltage of the data of the next frame.

[0120] Exemplarily, the control device 60 may further include a discharge control unit, which is electrically connected to the storage subcircuit 401 and is used to discharge the storage subcircuit 401 so that the amount of electricity stored in the storage subcircuit 401 corresponds to the data voltage of the next frame or the target data of the next frame (for example, data corresponding to a pixel circuit in the image data generated by the application processor AP). Exemplarily, see Fig.12 , Fig.12 The present invention provides a structural diagram of a discharge control unit 50 according to an embodiment of the present invention. The discharge control unit 50 may include a timing controller 501, a gate drive circuit 502, and a discharge sub-circuit 503. The gate drive circuit 502 is electrically connected between the timing controller 501 and the discharge sub-circuit 503, and the discharge sub-circuit 503 is electrically connected to the storage sub-circuit 401. The discharge sub-circuit 503 may be the same circuit as the discharge sub-circuit 404; the setting method of the gate drive circuit can refer to the description in the previous text; the timing controller 501 may be integrated in the display driver chip DDIC. The timing controller 501 may send a target timing signal to the gate drive circuit 502 when discharge is required (for example, when the comparison result is that the voltage of the next frame of data is less than the voltage of the previous frame of data), and the gate drive circuit 502 may output a second scan control signal based on the target timing signal through the second scan control line Vgate2 to control the discharge sub-circuit 503 to discharge the storage sub-circuit 401.

[0121] In some embodiments, the voltage comparator 601 includes a LM393 chip, see Fig.13 , Fig.13 This is a structural diagram of an LM393 chip provided in an embodiment of the present application. The LM393 chip is a low-power, low-voltage operation and high-precision voltage comparator. The pins of the chip are as follows Fig.13 As shown, VCC is the power supply voltage, GND is the ground terminal, and also includes two groups of comparison units. Among them, the first group of comparison units includes a same-direction input terminal 1IN+, a reverse input terminal 1IN-, and an output terminal 1OUT, and the second group of comparison units includes a same-direction input terminal 2IN+, a reverse input terminal 2IN-, and an output terminal 2OUT. The present application does not limit the number of groups of comparison units. Here, the output terminals of each group of comparison units can be electrically connected to different pixel circuits 40, respectively. For example, two groups of comparison units can be connected to two adjacent pixel circuits 40 in the same column of pixel circuits 40. In addition, the same-direction input terminal and the reverse input terminal of each group of comparison units can respectively receive two adjacent frames of data voltages (for example, the same-direction input terminal receives the data voltage of the previous frame, and the reverse input terminal receives the data voltage of the next frame). The implementation method can be, for example, referred to. Fig.10, two data voltage lines (Vdata1, Vdata2) are respectively electrically connected to the same group of comparison units' same-direction input terminal and reverse input terminal; or, for example, the control device 60 may further include a selection switch 602, or a selection switch 602 may be additionally provided between a data voltage line Vdata and the same group of comparison units' same-direction input terminal and reverse input terminal (i.e., Fig.11 As shown in FIG. 1 ), the voltage of the previous frame data is output to the same-direction input terminal of the same group of comparison units in time-sharing manner, and the voltage of the next frame data is output to the reverse input terminal. In some examples, the selection switch 602 can also be integrated in the voltage comparator 601. In some examples, the selection switch 602 can be composed of a plurality of control transistors connected to each other, and it is only necessary to ensure that the voltage of the previous frame data can be output to the same-direction input terminal of the same group of comparison units in time-sharing manner, and the voltage of the next frame data can be output to the reverse input terminal.

[0122] See also Fig.14 , Fig.14 This is a structural diagram of the display panel 30 and the flexible circuit board 301 after being connected in the embodiment of the present application, wherein, for the sake of clarity, the flexible circuit board 301 is not bent to the back of the display panel 30. In the first embodiment, the voltage comparator 601 can be arranged in the display panel 30 (display area AA or peripheral area BB), or on the flexible circuit board 301 connected to the display panel 30. Similarly, the selection switch 602 can be arranged in the display panel 30 (display area AA or peripheral area BB), or on the flexible circuit board 301 connected to the display panel 30.

[0123] Embodiment 2: The control device 60 includes a display driver chip DDIC. Fig.15 , Fig.15 A structural diagram of another display device provided in an embodiment of the present application. The display driver chip DDIC can be arranged Fig.14The display panel 30 shown (such as the area near the flexible circuit board 301 in the peripheral area) or the flexible circuit board 301. The display driver chip DDIC can be electrically connected to the pixel circuit (such as the data voltage input terminal of the switch subcircuit 403 of the pixel circuit 40) through the data voltage line Vdata. The display driver chip DDIC is used to compare the data voltages of two adjacent frames, and when the comparison result is that the data voltage of the next frame is greater than the data voltage of the previous frame, the difference between the data voltages of the two adjacent frames is output to the pixel circuit. Thus, the storage subcircuit can be replenished with electricity during the writing phase of the pixel circuit. That is, equivalent to the previous situation 2, the subsequent light-emitting phase can use the original stored electricity and the newly replenished electricity to drive the display. In addition, the display driver chip DDIC is also used to not output voltage to the pixel circuit when the comparison result is that the data voltage of the next frame is less than or equal to the data voltage of the previous frame. That is, equivalent to the above situation 1 or 3. It can be understood that, in response to the above situation 3, that is, when the comparison result is that the voltage of the data of the next frame is less than the voltage of the data of the previous frame, the storage sub-circuit 401 can be discharged (here refers to discharging part of the electricity) by using the discharge sub-circuit 404 (or the discharge sub-circuit 503) under the control of the second scan control signal output by the second scan control line Vgate2, so that the electricity stored in the storage sub-circuit 401 corresponds to the voltage of the data of the next frame.

[0124] Embodiment 3: The control device 60 includes an application processor AP and a display driver chip IC. Fig.16 , Fig.16 FIG. 1 is a structural diagram of another display device provided in an embodiment of the present application. Similarly, the display driver chip IC can be arranged in Fig.14The display panel 30 shown (such as the area near the flexible circuit board 301 in the peripheral area) or the flexible circuit board 301. The application processor AP can be set on a hard circuit board (such as a main control board) electrically connected to the flexible circuit board. The application processor AP is used to compare the target data corresponding to the same pixel circuit in two adjacent frames of image data, and when the comparison result is that the data voltage corresponding to the target data of the next frame is greater than the data voltage corresponding to the target data of the previous frame, the data difference of the target data of the two adjacent frames is output; the display driver chip DDIC is electrically connected between the application processor AP and the pixel circuit 40, and the display driver chip DDIC is used to obtain a compensation voltage based on the data difference and output the compensation voltage to the pixel circuit. Thus, the storage subcircuit can be replenished with electricity during the writing phase of the pixel circuit. That is, equivalent to the previous situation 2, the subsequent light-emitting phase can use the original stored electricity and the newly replenished electricity to drive the display. In addition, the application processor AP is also used to not output the data difference to the display driver chip DDIC when the comparison result is that the data voltage of the next frame is less than or equal to the data voltage of the previous frame. That is, it is equivalent to the above situation 1 or 3. At this time, the display driver chip DDIC does not output the compensation voltage to the pixel circuit. It can be understood that when corresponding to the above situation 3, that is, when the comparison result is that the voltage of the next frame data is less than the voltage of the previous frame data, the storage sub-circuit 401 can be discharged (here refers to discharging part of the electricity) by using the discharge sub-circuit 404 (or the discharge sub-circuit 503) under the control of the second scan control signal output by the second scan control line Vgate2, so that the electricity stored in the storage sub-circuit 401 corresponds to the target data of the next frame.

[0125] Embodiment 4: The control device 60 includes an application processor AP. Fig.17 , Fig.17 FIG. 1 is a structural diagram of another display device provided in an embodiment of the present application. Similarly, the application processor AP can be arranged on a hard circuit board (such as a main control board) electrically connected to the flexible circuit board. The application processor AP is used to compare the target data corresponding to the same pixel circuit in two adjacent frames of image data (see Figure 2 The comparison function shown in the dotted box in the figure can be implemented in the application processor AP by software and / or hardware integrated circuits), and when the comparison result is that the data voltage corresponding to the target data of the next frame is greater than the data voltage corresponding to the target data of the previous frame, the data difference between the target data of the two adjacent frames is obtained, and the compensation voltage (such as Figure 2The compensation voltage is generated by the DDIC in the memory), and the compensation voltage is output to the pixel circuit. Thus, the storage subcircuit can be replenished with electricity during the writing phase of the pixel circuit. That is, equivalent to the previous situation 2, the original stored electricity and the newly replenished electricity can be used to drive the display in the subsequent light-emitting phase. In addition, the application processor AP is also used to not output the compensation voltage to the pixel circuit when the comparison result is that the voltage of the next frame data is less than or equal to the voltage of the previous frame data. That is, it is equivalent to the above situation 1 or 3. It can be understood that when corresponding to the above situation 3, that is, when the comparison result is that the voltage of the next frame data is less than the voltage of the previous frame data, the storage subcircuit 401 can be discharged (here refers to discharging part of the electricity) by using the discharge subcircuit 404 (or the discharge subcircuit 503) under the control of the second scan control signal output by the second scan control line Vgate2, so that the electricity stored in the storage subcircuit 401 corresponds to the target data of the next frame.

[0126] Fig.18 A schematic diagram of another display screen provided in an embodiment of the present application. Fig.18 As shown, the display screen includes a pixel G, and one pixel G can correspond to a previous display unit, that is, three sub-pixels. In two adjacent frames of display screens, any of the schemes in the above-mentioned embodiments one to four can be adopted, and the information between frames (time redundancy) is used, and it is not necessary to discharge all the electricity of the current sub-pixel every time. By designing and adding a voltage comparison process, the voltage of the same sub-pixel in the pixel points of the two previous and next frames is compared to determine whether to intelligently charge and discharge the storage capacitor in the sub-pixel. Reduce the number of times the pixel is charged, and avoid the discharge of excess electricity. Thereby, the loss can be effectively reduced.

[0127] Embodiment 5: The control device 60 includes a transfer control circuit 603. Fig.19 As shown, Fig.19 A structural diagram of another display device provided for an embodiment of the present application. Among them, the plurality of pixel circuits 40 include a first pixel circuit 40A and a second pixel circuit 40B. It can be understood that the first pixel circuit 40A and the second pixel circuit 40B can be pixel circuits with the same structure or pixel circuits with different structures. In some examples, the first pixel circuit 40A and the second pixel circuit 40B are two adjacent pixel circuits in the same column of pixel circuits. The transfer control circuit 603 is electrically connected between the first pixel circuit 40A and the second pixel circuit 40B, and the transfer control circuit 603 is used to transfer the amount of electricity in the first pixel circuit 40A to the second pixel circuit 40B based on the first control signal, and to transfer the amount of electricity in the second pixel circuit 40B to the first pixel circuit 40A based on the second control signal. That is, equivalent to the previous situation 4, the subsequent light-emitting stage can use the transferred amount of electricity to drive the display.

[0128] Exemplarily, the storage subcircuit 401 in the first pixel circuit 40A is a first storage subcircuit 4011, the driving subcircuit 402 in the first pixel circuit 40A is a first driving subcircuit 4021, the first end of the first storage subcircuit 4011 is electrically connected to the control end of the first driving subcircuit 4021, and the second end of the first storage subcircuit 4011 is electrically connected to the first end of the first driving subcircuit 4021. The storage subcircuit 401 in the second pixel circuit 40B is a second storage subcircuit 4012, the driving subcircuit 402 in the second pixel circuit 40B is a second driving subcircuit 4022, the first end of the second storage subcircuit 4012 is electrically connected to the control end of the second driving subcircuit 4022, and the second end of the second storage subcircuit 4012 is electrically connected to the first end of the second driving subcircuit 4022. Fig. 20 , Fig. 20 A structural diagram of another display device provided in an embodiment of the present application. The transfer control circuit 603 includes a first transfer control circuit 71, the first transfer control circuit 71 includes a first transfer circuit 712 and a first control circuit 711, the first transfer circuit 712 is electrically connected to the first end of the second storage sub-circuit 4012, the second end of the second storage sub-circuit 4012 and the first end of the first control circuit 711, the second end of the first control circuit 711 is electrically connected to the first end of the first storage sub-circuit 4011, and the control end of the first control circuit 711 is used to receive a first control signal. The transfer control circuit 603 includes a second transfer control circuit 72, the second transfer control circuit 72 includes a second transfer circuit 722 and a second control circuit 721, the second transfer circuit 722 is electrically connected to the first end of the first storage sub-circuit 4011, the second end of the first storage sub-circuit 4011 and the first end of the second control circuit 721, the second end of the second control circuit 721 is electrically connected to the first end of the second storage sub-circuit 4012, and the control end of the second control circuit 721 is used to receive a second control signal.

[0129] For example, see Fig. 20The first transfer circuit 712 includes a first operational amplifier 7120, and the first control circuit 711 includes a first control transistor 7110; the in-phase input terminal a1 of the first operational amplifier 7120 is grounded, the inverting input terminal b1 is electrically connected to the first end of the second storage sub-circuit 4012 and the first electrode of the first control transistor 7110, the output terminal c1 is electrically connected to the second end of the second storage sub-circuit 4012, the second electrode of the first control transistor 7110 is electrically connected to the first end of the first storage sub-circuit 4011, and the control electrode of the first control transistor 7110 is used to receive a first control signal. The second transfer circuit 722 includes a second operational amplifier 7220, and the second control circuit 721 includes a second control transistor 7210; the in-phase input terminal a1 of the second operational amplifier 7220 is grounded, the inverting input terminal b1 is electrically connected to the first terminal of the first storage subcircuit 4011 and the first electrode of the second control transistor 7210, the output terminal c1 is electrically connected to the second terminal of the first storage subcircuit 4011, the second electrode of the second control transistor 7210 is electrically connected to the first terminal of the second storage subcircuit 4012, and the control electrode of the second control transistor 7210 is used to receive a second control signal. Here, both the first control signal and the second control signal can be high or low level signals.

[0130] It can be understood that the connection mode of the first operational amplifier 7120 and the second operational amplifier 7220 can form an inverter between the first pixel circuit 40A and the second pixel circuit 40B. Taking the first operational amplifier 7120 as an example, the non-inverting input terminal a1 of the first operational amplifier 7120 is grounded, the inverting input terminal b1 is virtually shorted with the non-inverting input terminal a1, and the resistance of the inverting input terminal b1 is very high and is in a virtual disconnection state. When the first control transistor 7011 is turned on, since the output terminal c1 of the first operational amplifier 7120 is connected to the other end of the second storage sub-circuit, the current can flow from the first node of the first pixel circuit 40A to the first node of the second pixel circuit 40B, that is, the amount of electricity in the first storage sub-circuit 4011 can flow to the second storage sub-circuit 4012, and finally the transfer of electricity is realized.

[0131] The transfer control circuit 603 may be arranged, for example, in Figure 3 In the display panel 30 shown (such as the display area AA and the peripheral area BB).

[0132] Continue reading Fig. 20In the fifth embodiment, the control device 60 may further include an application processor AP and a display driver chip DDIC. The setting positions of the application processor AP and the display driver chip DDIC may refer to the description in the previous text. The application processor AP is used to determine the sliding information based on the sliding function if it monitors that a sliding function (such as scroll) is called when drawing each frame of the image. The display driver chip DDIC is electrically connected between the application processor AP and the transfer control circuit 603, and the display driver chip DDIC is used to output the first control signal or the second control signal to the display panel based on the sliding information.

[0133] Exemplarily, the sliding information includes a sliding area and a sliding distance, and the display driver chip is used to output a first control signal or a second control signal to a transfer control circuit connected to a pixel circuit in the sliding area, and control the frequency of the output first control signal or the second control signal according to the sliding distance.

[0134] Fig.21 A schematic diagram of another display screen provided in an embodiment of the present application. Fig.21 As shown, the display screen includes multiple sub-pixel rows, taking the first sub-pixel row, the second sub-pixel row and the third sub-pixel row in the figure as an example (the first sub-pixel row, the second sub-pixel row and the third sub-pixel row may be adjacent or not adjacent, and it is only necessary to ensure that the spacing between the first sub-pixel row and the second sub-pixel row is equal to the spacing between the second sub-pixel row and the third sub-pixel row). In the process of sliding the display screen from the bottom to the top as shown in the figure, the display state of the first sub-pixel row can cover the display state of the second sub-pixel row, and the display state of the second sub-pixel row can cover the display state of the third sub-pixel row. That is, considering the use of information between pixels (spatial redundancy), it is possible to rely on the identification of the offset area and the distance. For the identified non-dirty area (for example, the area where the second sub-pixel row is located, the area where the third sub-pixel row is located, which refers to the area that can be replaced by a previously existing pixel row along the sliding direction), by adding a transfer control circuit 603, the electricity stored in the adjacent rows is transferred, and then the storage capacitor of the original pixel is discharged and then recharged through the transfer control circuit 603. For newly emerged dirty areas, any one of the above-mentioned embodiments 1 to 4 can be used to perform intelligent charging and discharging.

[0135] Fig.21 The illustration is made by sliding from bottom to top as an example. It can be understood that in the embodiment of the present application, the sliding direction of the display screen is not limited to this. For example, it can also be sliding from top to bottom, or it can also be sliding in the left and right directions as shown in the figure.

[0136] Based on the above-mentioned embodiment of the display device 1000, the present application also provides embodiments of a display panel, a display driver chip, and an application processor. For example, in some embodiments, a display panel 30 is provided, such as Fig.10 As shown, it includes the above-mentioned multiple pixel circuits 40 and a voltage comparator 601. In some embodiments, a display panel 30 is provided, such as Fig.11 As shown, it includes the above-mentioned multiple pixel circuits 40, a voltage comparator 601, and a selection switch 602. In some embodiments, a display panel 30 is provided, such as Fig.19 As shown, it includes the above-mentioned multiple pixel circuits 40 and a transfer control circuit 603. For another example, in some embodiments, a display driver chip DDIC is provided, and the display driver chip DDIC can be any of the display driver chips DDIC mentioned above. Fig.14 , the display driver chip DDIC can be set on the flexible circuit board 301, and can also be set on the display panel 30. For another example, in some embodiments, an application processor AP is provided, and the application processor AP can be any of the application processors AP mentioned above. At this time, the display device 1000 may include a hard circuit board connected to the flexible circuit board, such as a main control board, and the application processor AP can be set on the main control board.

[0137] On the other hand, an embodiment of the present application also provides a control method for a display device. The control method includes: in two adjacent display stages, controlling the amount of electricity stored in a storage subcircuit of a pixel circuit in the latter display stage, including at least part of the electricity stored in a storage subcircuit of any pixel circuit in the previous display stage. In this way, during the display process of the display device, the power consumption waste caused by redundancy between frames and the power consumption waste caused by redundancy between pixel circuits can be improved.

[0138] Fig. 22 A flowchart of a method for controlling a display device provided in an embodiment of the present application.

[0139] In some embodiments, in two adjacent display stages, controlling the amount of electricity stored in a storage subcircuit of a pixel circuit in a later display stage, including at least a portion of the amount of electricity stored in a storage subcircuit of any pixel circuit in a previous display stage, comprises:

[0140] S11, comparing the data voltages of two adjacent frames.

[0141] S12. When the comparison result shows that the data voltage of the next frame is greater than the data voltage of the previous frame, the difference between the data voltages of two adjacent frames is output to the pixel circuit.

[0142] In this embodiment, when the data voltage of the next frame is greater than the data voltage of the previous frame, the difference between the data voltages of two adjacent frames can be output to the pixel circuit. In this way, there is no need to discharge the pixel circuit of the previous display stage, and the original power can be directly used. On this basis, the additional power required can be further supplemented and used for the display in the next display stage, thereby improving the problem of power waste.

[0143] In some embodiments, in two adjacent display stages, controlling the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage includes at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, and further includes:

[0144] S13. When the comparison result shows that the data voltage of the next frame is less than or equal to the data voltage of the previous frame, no voltage is output to the pixel circuit.

[0145] In this embodiment, in the subsequent display stage, it is not necessary to charge the pixel circuit, thereby improving the problem of power consumption waste.

[0146] On this basis, illustratively, in two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage is controlled, including at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, and further includes:

[0147] S14, when the comparison result shows that the data voltage of the next frame is smaller than the data voltage of the previous frame, controlling the discharge subcircuit to discharge the storage subcircuit so that the amount of electricity stored in the storage subcircuit corresponds to the data voltage of the next frame.

[0148] In this example, in order to realize the display of the next display stage, the storage subcircuit can be discharged. The discharge here refers to discharging part of the electricity so that it directly corresponds to the next display stage. Compared with the related technology of discharging all the electricity and then charging, it can effectively improve the problem of power waste.

[0149] Fig.23 A flowchart of another method for controlling a display device provided in an embodiment of the present application.

[0150] In some embodiments, in two adjacent display stages, controlling the amount of electricity stored in a storage subcircuit of a pixel circuit in a later display stage, including at least a portion of the amount of electricity stored in a storage subcircuit of any pixel circuit in a previous display stage, comprises:

[0151] S21 . Compare target data corresponding to the same pixel circuit in two adjacent frames of image data.

[0152] S22 . When the comparison result shows that the data voltage corresponding to the target data of the next frame is greater than the data voltage corresponding to the target data of the previous frame, a data difference between the target data of two adjacent frames is obtained.

[0153] S23 , obtaining a compensation voltage based on the data difference, and outputting the compensation voltage to the pixel circuit.

[0154] In the present embodiment, when the data voltage corresponding to the target data of the next frame is greater than the data voltage corresponding to the target data of the previous frame, the data difference between the target data of two adjacent frames can be obtained, and then a compensation voltage can be obtained based on the data difference, and the compensation voltage can be output to the pixel circuit. In this way, there is no need to discharge the pixel circuit of the previous display stage, and the original power can be directly used. On this basis, the additional power required can be further supplemented and can be used for display in the next display stage, thereby improving the problem of power waste.

[0155] In some embodiments, in two adjacent display stages, controlling the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage includes at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, and further includes:

[0156] S24 , when the comparison result is that the data voltage corresponding to the target data of the next frame is less than or equal to the data voltage corresponding to the target data of the previous frame, the data difference is not output.

[0157] In this embodiment, in the subsequent display stage, it is not necessary to charge the pixel circuit, thereby improving the problem of power consumption waste.

[0158] On this basis, illustratively, in two adjacent display stages, the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage is controlled, including at least part of the amount of electricity stored in the storage subcircuit of any pixel circuit in the previous display stage, and further includes:

[0159] S25 . When the comparison result shows that the data voltage corresponding to the target data of the next frame is smaller than the data voltage corresponding to the target data of the previous frame, the discharge subcircuit is controlled to discharge the storage subcircuit so that the charge of the storage subcircuit corresponds to the target data of the next frame.

[0160] In this example, in order to realize the display of the next display stage, the storage subcircuit can be discharged. The discharge here refers to discharging part of the electricity so that it directly corresponds to the next display stage. Compared with the related technology of discharging all the electricity and then charging, it can effectively improve the problem of power waste.

[0161] Fig.24 A flowchart of another method for controlling a display device provided in an embodiment of the present application.

[0162] In some embodiments, in two adjacent display stages, controlling the amount of electricity stored in a storage subcircuit of a pixel circuit in a later display stage, including at least a portion of the amount of electricity stored in a storage subcircuit of any pixel circuit in a previous display stage, comprises:

[0163] S31, when drawing each frame of the image, if it is monitored that a sliding function is called, determining sliding information based on the sliding function;

[0164] S32: Based on the sliding information, output a first control signal or a second control signal to the transfer control circuit, wherein the first control signal is used to enable the transfer control circuit to transfer the electric quantity in the first pixel circuit to the second pixel circuit, and the second control signal is used to enable the transfer control unit to transfer the electric quantity in the second pixel circuit to the first pixel circuit.

[0165] In this embodiment, the first control signal or the second control signal output to the transfer control circuit can be controlled according to the sliding information, so that the charging and discharging process can be quickly realized during the sliding display process, and because the redundant power between pixel circuits is utilized, the problem of power consumption can be well improved.

[0166] Fig.25 A flowchart of another method for controlling a display device provided in an embodiment of the present application.

[0167] Exemplarily, the sliding information includes a sliding area and a sliding distance. S32: Based on the sliding information, outputting a first control signal or a second control signal to the transfer control circuit includes:

[0168] S321. Output a first control signal or a second control signal to a transfer control unit connected to the pixel circuit in the sliding area.

[0169] S322. Control the frequency of outputting the first control signal or the second control signal according to the sliding distance.

[0170] In this example, the area where the redundant information between the pixel circuits and the moving distance during the sliding process is located can be determined according to the sliding information, so as to achieve more precise control, such as controlling the output range (i.e., to which transfer control circuits the first control signal or the second control signal is output) and the frequency (e.g., each time the amount of electricity corresponding to an adjacent row is transferred). For the area where there is no redundant information during the sliding process, the above-mentioned Fig. 22 and Fig.23 The corresponding control method is improved.

[0171] One or more of the modules or units in the embodiments of the present application may be implemented by software, hardware, or a combination of both.

[0172] When any of the above modules or units are implemented in software, the software exists in the form of computer program instructions and is stored in a memory, and the processor can be used to execute the program instructions to implement the above method flow. The processor may include but is not limited to at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller (MCU), or an artificial intelligence processor and other types of computing devices that run software, each of which may include one or more cores for executing software instructions to perform operations or processing. The processor may be a separate semiconductor chip, or it may be integrated into a semiconductor chip together with other circuits. For example, it may form a SoC (system on chip) with other circuits (such as a codec circuit, a hardware acceleration circuit, or various buses and interface circuits), or it may be integrated into the ASIC as a built-in processor of an ASIC. The ASIC with an integrated processor may be packaged separately or with other circuits. In addition to the core for executing software instructions for operations or processing, the processor may further include necessary hardware accelerators, such as field programmable gate arrays (FPGAs), programmable logic devices (PLDs), or logic circuits that implement dedicated logic operations.

[0173] When the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a DSP, an MCU, an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0174] Some embodiments of the present application provide a computer storage medium (e.g., a non-transitory computer-readable storage medium), which stores a computer program. When the computer program runs on a computer (e.g., a display device), the computer executes the display method described in any of the above embodiments.

[0175] Exemplarily, the above-mentioned computer storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., compact disks (CD), digital versatile disks (DVD), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). The various computer-readable storage media described in this application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0176] Some embodiments of the present application further provide a computer program product, for example, the computer program product can be stored on a non-transitory computer-readable storage medium. The computer program product includes computer program instructions, and when the computer program instructions are executed on a computer (for example, a display device), the computer program instructions cause the computer to execute the display method described in the above embodiment.

[0177] Some embodiments of the present application further provide a computer program. When the computer program is executed on a computer (eg, a display device), the computer program enables the computer to execute the display method described in the above embodiments.

[0178] The beneficial effects of the above-mentioned computer storage medium, computer program product and computer program are the same as the beneficial effects of the display method described in some of the above-mentioned embodiments, and will not be repeated here.

[0179] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display device, characterized in that: include: A plurality of pixel circuits and a control device, wherein the control device is electrically connected to at least one pixel circuit; The pixel circuit includes a storage subcircuit; The pixel circuit is used to output a driving current, and the storage subcircuit is used to maintain the driving current for a period of time; The control device is used to: in two adjacent display stages, control the amount of electricity stored in the storage subcircuit of the pixel circuit in the latter display stage, including at least part of the electricity stored in the storage subcircuit of any pixel circuit in the previous display stage.

2. The display device according to claim 1, characterized in that The control device includes a voltage comparator; the voltage comparator is electrically connected between the data voltage line and the pixel circuit; The voltage comparator is used to compare the data voltages of two adjacent frames transmitted by the data voltage line, and when the comparison result shows that the data voltage of the latter frame is greater than the data voltage of the previous frame, output the difference between the data voltages of the two adjacent frames to the pixel circuit; The voltage comparator is also used for not outputting a voltage to the pixel circuit when the comparison result shows that the data voltage of the next frame is less than or equal to the data voltage of the previous frame.

3. The display device according to claim 2, characterized in that The voltage comparator includes a non-inverting input terminal, a reverse input terminal and an output terminal, the non-inverting input terminal is electrically connected to a data voltage line, the reverse input terminal is electrically connected to another data voltage line, and the output terminal is electrically connected to the pixel circuit; wherein the one data voltage line is used to transmit the data voltage of the previous frame, and the other data voltage line is used to transmit the data voltage of the next frame.

4. The display device according to claim 2, characterized in that The control device further includes a selection switch, and the voltage comparator includes a non-inverting input terminal, a reverse input terminal and an output terminal; The selection switch is electrically connected between the data voltage line, the same direction input terminal and the reverse input terminal, and is used to output a previous frame data voltage to the same direction input terminal and a next frame data voltage to the reverse input terminal in a time-sharing manner.

5. The display device according to claim 1, characterized in that The control device includes a display driver chip; the display driver chip is electrically connected to the pixel circuit through a data voltage line; the display driver chip is used to: compare the data voltages of two adjacent frames, and when the comparison result shows that the data voltage of the latter frame is greater than the data voltage of the previous frame, output the difference between the data voltages of the two adjacent frames to the pixel circuit via the data voltage line; The display driving chip is also used for not outputting a voltage to the pixel circuit when the comparison result shows that the voltage of the next frame data is less than or equal to the voltage of the previous frame data.

6. The display device according to claim 1, characterized in that The control device includes a processing unit and a display driving unit; the processing unit is used to compare the target data corresponding to the same pixel circuit in two adjacent frames of image data, and when the comparison result is that the data voltage corresponding to the target data of the latter frame is greater than the data voltage corresponding to the target data of the previous frame, output the data difference between the two adjacent frames of target data; the display driving unit is electrically connected between the processing unit and the pixel circuit, and the display driving unit is used to obtain a compensation voltage based on the data difference, and output the compensation voltage to the pixel circuit; The processing unit is also used for not outputting the data difference to the display driving unit when the comparison result shows that the data voltage corresponding to the target data of the next frame is less than or equal to the data voltage corresponding to the target data of the previous frame, and the display driving unit does not output the data voltage.

7. The display device according to claim 1, characterized in that The plurality of pixel circuits include a first pixel circuit and a second pixel circuit, and the control device includes a transfer control circuit; The transfer control circuit is electrically connected between the first pixel circuit and the second pixel circuit, and is used to transfer the electric charge in the first pixel circuit to the second pixel circuit based on a first control signal, and to transfer the electric charge in the second pixel circuit to the first pixel circuit based on a second control signal.

8. The display device according to claim 7, characterized in that The storage subcircuit in the first pixel circuit is a first storage subcircuit, the first pixel circuit further includes a first driving subcircuit, a first end of the first storage subcircuit is electrically connected to a control end of the first driving subcircuit, and a second end of the first storage subcircuit is electrically connected to a first end of the first driving subcircuit; The storage subcircuit in the second pixel circuit is a second storage subcircuit, the second pixel circuit further includes a second driving subcircuit, a first end of the second storage subcircuit is electrically connected to a control end of the second driving subcircuit, and a second end of the second storage subcircuit is electrically connected to a first end of the second driving subcircuit; The transfer control circuit comprises a first transfer circuit and a first control circuit, wherein the first transfer circuit is electrically connected to a first end of the second storage sub-circuit, a second end of the second storage sub-circuit and a first end of the first control circuit, the second end of the first control circuit is electrically connected to the first end of the first storage sub-circuit, and the control end of the first control circuit is used to receive the first control signal; The transfer control circuit also includes a second transfer circuit and a second control circuit, the second transfer circuit is electrically connected to the first end of the first storage sub-circuit, the second end of the first storage sub-circuit and the first end of the second control circuit, the second end of the second control circuit is electrically connected to the first end of the second storage sub-circuit, and the control end of the second control circuit is used to receive the second control signal.

9. The display device according to claim 8, characterized in that The first transfer circuit includes a first operational amplifier, and the first control circuit includes a first control transistor; the first operational amplifier is grounded at its non-inverting input terminal, electrically connected to the first terminal of the second storage sub-circuit and the first electrode of the first control transistor at its inverting input terminal, electrically connected to the second terminal of the second storage sub-circuit, electrically connected to the second electrode of the first control transistor at its output terminal, electrically connected to the first terminal of the first storage sub-circuit, and the control electrode of the first control transistor is used to receive a first control signal; The second transfer circuit includes a second operational amplifier, and the second control circuit includes a second control transistor; the in-phase input terminal of the second operational amplifier is grounded, the inverting input terminal is electrically connected to the first end of the first storage sub-circuit and the first electrode of the second control transistor, the output terminal is electrically connected to the second end of the first storage sub-circuit, the second electrode of the second control transistor is electrically connected to the first end of the second storage sub-circuit, and the control electrode of the second control transistor is used to receive a second control signal.

10. The display device according to any one of claims 7 to 9, characterized in that: The control device also includes a processing unit and a display driving unit; The processing unit is used for determining sliding information based on the sliding function if it is detected that a sliding function is called when drawing each frame of the image; The display driving unit is electrically connected between the processing unit and the transfer control circuit, and the display driving unit is used to output the first control signal or the second control signal to the transfer control circuit based on the sliding information.

11. The display device according to claim 10, characterized in that The sliding information includes a sliding area and a sliding distance. The display driving unit is used to output the first control signal or the second control signal to the transfer control circuit connected to the pixel circuit in the sliding area, and control the frequency of the output of the first control signal or the second control signal according to the sliding distance.

12. The display device according to any one of claims 2 to 11, characterized in that: The control device also includes a discharge control unit electrically connected to the storage subcircuit for discharging the storage subcircuit so that the amount of electricity stored in the storage subcircuit corresponds to the next frame data voltage or the next frame target data.

13. The display device according to claim 12, characterized in that The discharge control unit includes a timing controller, a gate driving circuit, and a discharge sub-circuit. The gate driving circuit is electrically connected between the timing controller and the discharge sub-circuit. The discharge sub-circuit is electrically connected to the storage sub-circuit.

14. The display device according to any one of claims 6, 10 and 11, characterized in that: The processing unit includes an application processor, and the display driving unit includes a display driving chip; Alternatively, the processing unit and the display driving unit are integrated in an application processor.

15. A display panel, characterized in that: include: A plurality of pixel circuits and a voltage comparator; the voltage comparator is electrically connected between the data voltage line and the pixel circuit; The voltage comparator is used to compare the data voltages of two adjacent frames transmitted by the data voltage line, and when the comparison result shows that the data voltage of the latter frame is greater than the data voltage of the previous frame, output the difference between the data voltages of the two adjacent frames to the pixel circuit; The voltage comparator is also used for not outputting a voltage to the pixel circuit when the comparison result shows that the data voltage of the next frame is less than or equal to the data voltage of the previous frame.

16. The display panel according to claim 15, characterized in that: The voltage comparator includes a non-inverting input terminal, a reverse input terminal and an output terminal, the non-inverting input terminal is electrically connected to a data voltage line, the reverse input terminal is electrically connected to another data voltage line, and the output terminal is electrically connected to the pixel circuit; wherein the one data voltage line is used to transmit the data voltage of the previous frame, and the other data voltage line is used to transmit the data voltage of the next frame.

17. The display panel according to claim 15, characterized in that: It also includes a selection switch, and the voltage comparator includes a non-inverting input terminal, a reverse input terminal and an output terminal; The selection switch is electrically connected between the data voltage line, the same direction input terminal and the reverse input terminal, and is used to output a previous frame data voltage to the same direction input terminal and a next frame data voltage to the reverse input terminal in a time-sharing manner.

18. A display panel, characterized in that: include: A plurality of pixel circuits and a transfer control circuit, wherein the plurality of pixel circuits include a first pixel circuit and a second pixel circuit; The transfer control circuit is electrically connected between the first pixel circuit and the second pixel circuit, and is used to transfer the electric charge in the first pixel circuit to the second pixel circuit based on a first control signal, and to transfer the electric charge in the second pixel circuit to the first pixel circuit based on a second control signal.

19. The display panel according to claim 18, characterized in that: The storage subcircuit in the first pixel circuit is a first storage subcircuit, the first pixel circuit further includes a first driving subcircuit, a first end of the first storage subcircuit is electrically connected to a control end of the first driving subcircuit, and a second end of the first storage subcircuit is electrically connected to a first end of the first driving subcircuit; The storage subcircuit in the second pixel circuit is a second storage subcircuit, the second pixel circuit further includes a second driving subcircuit, a first end of the second storage subcircuit is electrically connected to a control end of the second driving subcircuit, and a second end of the second storage subcircuit is electrically connected to a first end of the second driving subcircuit; The transfer control circuit comprises a first transfer circuit and a first control circuit, wherein the first transfer circuit is electrically connected to a first end of the second storage sub-circuit, a second end of the second storage sub-circuit and a first end of the first control circuit, the second end of the first control circuit is electrically connected to the first end of the first storage sub-circuit, and the control end of the first control circuit is used to receive the first control signal; The transfer control circuit also includes a second transfer circuit and a second control circuit, the second transfer circuit is electrically connected to the first end of the first storage sub-circuit, the second end of the first storage sub-circuit and the first end of the second control circuit, the second end of the second control circuit is electrically connected to the first end of the second storage sub-circuit, and the control end of the second control circuit is used to receive the second control signal.

20. The display panel according to claim 19, characterized in that: The first transfer circuit includes a first operational amplifier, and the first control circuit includes a first control transistor; the first operational amplifier is grounded at its non-inverting input terminal, electrically connected to the first terminal of the second storage sub-circuit and the first electrode of the first control transistor at its inverting input terminal, electrically connected to the second terminal of the second storage sub-circuit, electrically connected to the second electrode of the first control transistor at its output terminal, electrically connected to the first terminal of the first storage sub-circuit, and the control electrode of the first control transistor is used to receive a first control signal; The second transfer circuit includes a second operational amplifier, and the second control circuit includes a second control transistor; the in-phase input terminal of the second operational amplifier is grounded, the inverting input terminal is electrically connected to the first end of the first storage sub-circuit and the first electrode of the second control transistor, the output terminal is electrically connected to the second end of the first storage sub-circuit, the second electrode of the second control transistor is electrically connected to the first end of the second storage sub-circuit, and the control electrode of the second control transistor is used to receive a second control signal.

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