Display device and display panel

Abstract

Embodiments of the present application provide a display device and a display panel, and relate to the technical field of display, and are used for solving the problem of display power waste in the related art. The display device comprises a plurality of pixel circuits and a control device, the control device is electrically connected with at least one pixel circuit; the pixel circuit comprises a storage sub-circuit. 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 to include at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in the previous display stage in the two adjacent display stages. The display device provided by the embodiments of the present application can effectively utilize the redundant information between the two display stages, so as to achieve the purpose of reducing power waste.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display device and a display panel. BACKGROUND

[0002] The display device comprises a display panel, and the display panel is provided with a pixel circuit and a light-emitting unit. The pixel circuit is electrically connected with the light-emitting unit, and 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 that the current discharging and charging mode of the pixel circuit has a great waste of power consumption. SUMMARY

[0004] Embodiments of the present application aim to provide a display device and a display panel, and solve the problem of display power consumption waste in the related art.

[0005] In order to achieve the above-mentioned purpose, embodiments of the present application provide the following solutions:

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

[0007] The display device provided by the embodiments of the present application can be used to output a driving current, and the storage sub-circuit in the pixel circuit can maintain the size of the driving current for a period of time (for example, in the light emitting stage) when the pixel circuit outputs the driving current (for example, the pixel circuit can further include a driving sub-circuit, and the electric quantity of the storage sub-circuit can maintain the opening of the driving sub-circuit for a period of time), so that when the pixel circuit is connected with the light emitting unit in the display device, the driving current can drive the light emitting unit to normally emit light. In addition, since the controller is arranged, the electric quantity stored in the storage sub-circuit of the pixel circuit in the next display stage can be controlled, and the electric quantity stored in the storage sub-circuit of any pixel circuit in the previous display stage is included. In this way, at least part of the electric quantity stored in the storage sub-circuit 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, the charging and discharging need to be performed in each display stage (for example, the initialization stage, the writing stage and the light emitting stage), the redundant information between two display stages can be effectively utilized, so that the purpose of reducing power consumption waste is achieved.

[0008] In some embodiments, the controller includes a voltage comparator; the voltage comparator is electrically connected between the data voltage line and the pixel circuit; and the voltage comparator is configured to compare adjacent two frame data voltages transmitted by the data voltage line, and output a difference between the adjacent two frame data voltages to the pixel circuit when the comparison result is that the next frame data voltage is greater than the previous frame data voltage. In this way, the voltage comparator can be used to compare adjacent two frame data voltages, and when the next frame data voltage is greater than the previous frame data voltage, the difference between the adjacent two frame data voltages is output to the pixel circuit. In this way, the pixel circuit in the previous display stage does not need to be discharged, and the original electric quantity can be directly used, and on this basis, additional electric quantity required can be further supplemented, that is, it can be used for display in the next display stage, so as to improve the problem of power consumption waste.

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

[0010] In some embodiments, the voltage comparator comprises a same direction input end, a reverse direction input end and an output end, the same direction input end is electrically connected with one data voltage line, the reverse direction input end is electrically connected with another data voltage line, and the output end is electrically connected with the pixel circuit; wherein the one data voltage line is used for transmitting a previous frame data voltage, and the another data voltage line is used for transmitting a next frame data voltage. In this way, two data voltage lines can be used to transmit adjacent two frame data voltages to the voltage comparator in time for comparison.

[0011] For example, the voltage comparator can be an LM393 chip.

[0012] In some embodiments, the control device further comprises a selection switch, and the voltage comparator comprises a same direction input end, a reverse direction input end and an output end; the selection switch is electrically connected between the data voltage lines, the same direction input end and the reverse direction input end, and is used for outputting the previous frame data voltage to the same direction input end and the next frame data voltage to the reverse direction input end in time. In this way, the number of data voltage lines can be reduced, for example, by one, thereby facilitating the simplification of the structure, and the voltage comparator can also receive adjacent two frame data voltages in time and compare them.

[0013] In some embodiments, the control device comprises a display driving chip; the display driving chip is electrically connected to the pixel circuit through the data voltage line; and the display driving chip is used for comparing adjacent two frame data voltages, and outputting a difference value of the adjacent two frame data voltages to the pixel circuit through the data voltage line when the comparison result is that the next frame data voltage is greater than the previous frame data voltage. In this way, at least part of the electric quantity stored in the storage sub-circuit 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, in which charging and discharging need to be performed in each display stage, the redundant information between two display stages can be effectively utilized, thereby achieving the purpose of reducing power consumption waste. Moreover, the voltage comparison function can be moved to the display driving chip, and the comparison function can be realized by software and / or hardware, thereby making the structure simpler.

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

[0015] In some embodiments, the control device comprises a processing unit and a display driving unit; the processing unit is configured to compare target data corresponding to the same pixel circuit in two adjacent frames of image data, and output a data difference between the target data of the two adjacent frames 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 former frame; and the display driving unit is electrically connected between the processing unit and the pixel circuit, and is configured 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 former frame, the difference between the data voltages of the two adjacent frames can be output to the pixel circuit, so that the pixel circuit of the former display stage does not need to be discharged, and the original electric quantity can be directly used, and on this basis, additional electric quantity required can be further supplemented, i.e., used for display of the latter 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 latter frame is less than or equal to the data voltage corresponding to the target data of the former 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 latter display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0017] In some embodiments, the plurality of pixel circuits comprises a first pixel circuit and a second pixel circuit, and the control device comprises a transfer control circuit; the transfer control circuit is electrically connected between the first pixel circuit and the second pixel circuit, and is configured to transfer electric quantity in the first pixel circuit to the second pixel circuit based on a first control signal, and transfer electric quantity in the second pixel circuit to the first pixel circuit based on a second control signal. By adding the transfer control circuit, the electric quantity stored in adjacent rows can be transferred. For example, after discharging the storage capacitor of the original pixel, the transfer control circuit can be used to recharge the pixel, thereby utilizing the redundant information between the pixel circuits and the pixel circuits, and improving the problem of power consumption waste.

[0018] In some embodiments, the storage sub-circuit in the first pixel circuit is a first storage sub-circuit, the first pixel circuit further comprises a first driving sub-circuit, a first end of the first storage sub-circuit is electrically connected with a control end of the first driving sub-circuit, and a second end of the first storage sub-circuit is electrically connected with a first end of the first driving sub-circuit; the storage sub-circuit in the second pixel circuit is a second storage sub-circuit, the second pixel circuit further comprises a second driving sub-circuit, a first end of the second storage sub-circuit is electrically connected with a control end of the second driving sub-circuit, and a second end of the second storage sub-circuit is electrically connected with a first end of the second driving sub-circuit; the transfer control circuit comprises a first transfer circuit and a first control circuit, the first transfer circuit is electrically connected with the first end of the second storage sub-circuit, the second end of the second storage sub-circuit and a first end of the first control circuit, a second end of the first control circuit is electrically connected with the first end of the first storage sub-circuit, and a control end of the first control circuit is used for receiving the first control signal; the transfer control circuit further comprises a second transfer circuit and a second control circuit, the second transfer circuit is electrically connected with the first end of the first storage sub-circuit, the second end of the first storage sub-circuit and a first end of the second control circuit, a second end of the second control circuit is electrically connected with the first end of the second storage sub-circuit, and a control end of the second control circuit is used for receiving the second control signal. In this way, the first transfer circuit and the first control circuit can be used to realize the transfer of the electric quantity in the first pixel circuit to the second pixel circuit, and the second transfer circuit and the second control circuit can be used to realize the transfer of the electric quantity in the second pixel circuit to the first pixel circuit.

[0019] In some embodiments, the first transfer circuit comprises a first operational amplifier, and the first control circuit comprises a first control transistor; a non-inverting input end of the first operational amplifier is grounded, an inverting input end is electrically connected with the first end of the second storage sub-circuit and a first pole of the first control transistor, an output end is electrically connected with the second end of the second storage sub-circuit, a second pole of the first control transistor is electrically connected with the first end of the first storage sub-circuit, and a control pole of the first control transistor is used for receiving the first control signal. In this way, an inverter can be formed between the first pixel circuit and the second pixel circuit. The non-inverting input end of the first operational amplifier is grounded, the inverting input end is virtually short-circuited with the non-inverting input end, and the inverting input end has a very high resistance and is in a virtual open state. When the first control transistor is opened under the control of the first control signal, since the output end of the first operational amplifier is connected with the other end of the second storage sub-circuit, 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 electric quantity in the first storage sub-circuit can flow to the second storage sub-circuit, and finally the transfer of the electric quantity is realized.

[0020] The second transfer circuit comprises a second operational amplifier, and the second control circuit comprises a second control transistor; the non-inverting input terminal of the second operational amplifier is grounded, the inverting input terminal is electrically connected with the first end of the first storage sub-circuit and the first electrode of the second control transistor, and the output terminal is electrically connected with the second end of the first storage sub-circuit; the second electrode of the second control transistor is electrically connected with the first end of the second storage sub-circuit, and the control electrode of the second control transistor is used for receiving a second control signal. In this way, a inverter can be formed between the first pixel circuit and the second pixel circuit. The non-inverting input terminal of the second operational amplifier is grounded, the inverting input terminal is virtually short-circuited with the non-inverting input terminal, and the inverting input terminal has a very high resistance and is in a virtual open state. When the second control transistor is opened under the control of the second control signal, since the output terminal of the second operational amplifier is connected with the other end of the first storage sub-circuit, current can flow from the first node of the second pixel circuit to the first node of the first pixel circuit, that is, the electric quantity in the second storage sub-circuit can flow to the first storage sub-circuit, and finally the transfer of the electric quantity is realized.

[0021] In some embodiments, the control device further comprises a processing unit and a display driving unit. The processing unit is configured to, when drawing each frame of image, if it is detected that a sliding function is called, determine sliding information based on the sliding function; and the display driving unit is electrically connected between the processing unit and the transfer control circuit, and is configured 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. Thus, the charging and discharging process can be quickly realized in the sliding display process, and the problem of power consumption waste can be well improved because the redundant electric quantity between the pixel circuits is utilized.

[0022] In some embodiments, the sliding information comprises a sliding area and a sliding distance, and the display driving unit is configured to output the first control signal or the second control signal to the transfer control circuit connected with the pixel circuit in the sliding area, and control the frequency of the output first control signal or second control signal according to the sliding distance. In this example, the area and the moving distance of the redundant information between the pixel circuits in the sliding process can be determined according to the sliding information, so that more accurate control can be realized, such as controlling the output range (i.e. output to which transfer control circuit) and the frequency (such as the electric quantity transfer of each adjacent row) of the first control signal or the second control signal, and for the area without redundant information in the sliding process, the first control signal or the second control signal can be output according to the previous Figure 22 and Figure 23 The corresponding control method is improved.

[0023] In some embodiments, the control device further comprises a discharging control unit electrically connected to the storage sub-circuit, configured to discharge the storage sub-circuit, so that the storage sub-circuit stores an electric quantity corresponding to the next frame data voltage or the next frame target data. In this way, the storage sub-circuit of the pixel circuit can be discharged when the required electric quantity in the next display stage is lower than that in the previous display stage.

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

[0025] In some embodiments, the display device comprises a display panel and a flexible printed 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 printed circuit board. In this way, the voltage comparator is more reasonably arranged and is less likely to affect other components. Moreover, when the voltage comparator is arranged in the flexible printed circuit board, the flexible printed circuit board can be bent on the back of the display panel, which is conducive to the realization of narrow frame of the display device.

[0026] In some embodiments, the display device comprises a display panel and a flexible printed 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 printed circuit board. In this way, the selection switch is more reasonably arranged and is less likely to affect other components. Moreover, when the selection switch is arranged in the flexible printed circuit board, the flexible printed circuit board can be bent on the back of the display panel, which is conducive to the realization of narrow frame of the display device.

[0027] In some embodiments, the display device comprises a display panel and a flexible printed circuit board connected to the display panel, the plurality of pixel circuits are located in the display panel, and the display driving chip is located in the display panel or the flexible printed circuit board. In this way, the display driving chip is more reasonably arranged and is less likely to affect other components. Moreover, when the display driving chip is arranged in the flexible printed circuit board, the flexible printed circuit board can be bent on the back of the display panel, which is conducive to the realization of narrow frame of the display device.

[0028] In some embodiments, the processing unit comprises an application processor, and the display driving unit comprises a display driving chip. In this way, no additional structure needs to be added in the display device, and the structure is simpler.

[0029] In some embodiments, the processing unit and the display driving unit are integrated in an application processor. In this way, the display driving chip can be omitted, and the structure of the display device is 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 circuits; the voltage comparator is configured to: compare adjacent two frame data voltages transmitted by the data voltage line, and output a difference between the adjacent two frame data voltages to the pixel circuits when a comparison result is that a latter frame data voltage is greater than a former frame data voltage.

[0031] The display panel provided by the embodiments of the present application can control the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage, including at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage, so that at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage can be reused, i.e., it can be applied to a certain pixel circuit in the latter display stage. Compared with the related art, in which charging and discharging need to be performed in each display stage, the redundant information between two display stages can be effectively utilized, so that the purpose of reducing power consumption waste can be achieved.

[0032] In some embodiments, the voltage comparator is further configured to: when the comparison result is that the latter frame data voltage is less than or equal to the former frame data voltage, not output a voltage to the pixel circuits. In this embodiment, the pixel circuit does not need to be charged in the latter display stage, so that the problem of power consumption waste can be improved.

[0033] In some embodiments, the voltage comparator comprises a same-direction input end, a reverse input end and an output end, the same-direction input end is electrically connected with one data voltage line, the reverse input end is electrically connected with another data voltage line, and the output end is electrically connected with the pixel circuit; wherein the one data voltage line is used to transmit the former frame data voltage, and the another data voltage line is used to transmit the latter frame data voltage. In this way, the two data voltage lines can be used to transmit the adjacent two frame data voltages to the voltage comparator in time for comparison.

[0034] For example, the voltage comparator can be an LM393 chip.

[0035] In some embodiments, the display panel further comprises a selection switch, the voltage comparator comprises a same direction input end, a reverse direction input end and an output end; the selection switch is electrically connected between the data voltage line, the same direction input end and the reverse direction input end, and is used for outputting a previous frame data voltage to the same direction input end and a next frame data voltage to the reverse direction input end in time division. In this way, the number of data voltage lines can be reduced, for example, by one. Thus, the structure is simplified, and the voltage comparator can also receive and compare data voltages of two adjacent frames in time division.

[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 being electrically connected between the first pixel circuit and the second pixel circuit, and being used for transferring electric quantity in the first pixel circuit to the second pixel circuit based on a first control signal, and transferring electric quantity in the second pixel circuit to the first pixel circuit based on a second control signal.

[0037] In the embodiment, by adding the transfer control circuit, the electric quantity stored in adjacent rows can be transferred. For example, after discharging the storage capacitor of the original pixel, the transfer control circuit can be used to recharge it, so that the redundant information between the pixel circuits can be utilized, and the problem of power waste can be improved.

[0038] In some embodiments, the storage sub-circuit in the first pixel circuit is a first storage sub-circuit, the first pixel circuit further comprises a first driving sub-circuit, a first end of the first storage sub-circuit is electrically connected with a control end of the first driving sub-circuit, and a second end of the first storage sub-circuit is electrically connected with a first end of the first driving sub-circuit; the storage sub-circuit in the second pixel circuit is a second storage sub-circuit, the second pixel circuit further comprises a second driving sub-circuit, a first end of the second storage sub-circuit is electrically connected with a control end of the second driving sub-circuit, and a second end of the second storage sub-circuit is electrically connected with a first end of the second driving sub-circuit; the transfer control circuit comprises a first transfer circuit and a first control circuit, the first transfer circuit is electrically connected with the first end of the second storage sub-circuit, the second end of the second storage sub-circuit and a first end of the first control circuit, a second end of the first control circuit is electrically connected with the first end of the first storage sub-circuit, and a control end of the first control circuit is used for receiving the first control signal; the transfer control circuit further comprises a second transfer circuit and a second control circuit, the second transfer circuit is electrically connected with the first end of the first storage sub-circuit, the second end of the first storage sub-circuit and a first end of the second control circuit, a second end of the second control circuit is electrically connected with the first end of the second storage sub-circuit, and a control end of the second control circuit is used for receiving the second control signal. In this way, the first transfer circuit and the first control circuit can be used to realize the transfer of the electric quantity in the first pixel circuit to the second pixel circuit, and the second transfer circuit and the second control circuit can be used to realize the transfer of the electric quantity in the second pixel circuit to the first pixel circuit.

[0039] In some embodiments, the first transfer circuit comprises a first operational amplifier, and the first control circuit comprises a first control transistor; a non-inverting input end of the first operational amplifier is grounded, an inverting input end is electrically connected with the first end of the second storage sub-circuit and a first pole of the first control transistor, an output end is electrically connected with the second end of the second storage sub-circuit, a second pole of the first control transistor is electrically connected with the first end of the first storage sub-circuit, and a control pole of the first control transistor is used for receiving the first control signal. In this way, an inverter can be formed between the first pixel circuit and the second pixel circuit. The non-inverting input end of the first operational amplifier is grounded, the inverting input end is virtually short-circuited with the non-inverting input end, and the inverting input end has a very high resistance and is in a virtual open state. When the first control transistor is opened under the control of the first control signal, since the output end of the first operational amplifier is connected with the other end of the second storage sub-circuit, 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 electric quantity in the first storage sub-circuit can flow to the second storage sub-circuit, and finally the transfer of the electric quantity 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; a non-inverting input terminal of the second operational amplifier is grounded, an inverting input terminal is electrically connected to the first terminal of the first storage sub-circuit and a first electrode of the second control transistor, and an output terminal is electrically connected to the second terminal of the first storage sub-circuit; a second electrode of the second control transistor is electrically connected to the first terminal of the second storage sub-circuit, and a control electrode of the second control transistor is configured 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 non-inverting input terminal of the second operational amplifier is grounded, the inverting input terminal is virtually shorted to the non-inverting input terminal, and the inverting input terminal has a high resistance and is virtually open. When the second control transistor is turned on under the control of the second control signal, current can flow from the first node of the second pixel circuit to the first node of the first pixel circuit, i.e., the electric quantity in the second storage sub-circuit can flow to the first storage sub-circuit, and finally the transfer of the electric quantity is realized.

[0041] In a fourth aspect, a display driving chip is provided. The display driving chip is configured to compare adjacent two frame data voltages, and when a comparison result is that a latter frame data voltage is greater than a former frame data voltage, output a difference between the adjacent two frame data voltages to the pixel circuit via the data voltage line, and when the comparison result is that the latter frame data voltage is less than or equal to the former frame data voltage, not output a voltage to the pixel circuit. In this way, at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in a former display stage can be reused, i.e., it can be applied to a certain pixel circuit in a latter display stage. Compared with the related art in which charging and discharging need to be performed in each display stage, the redundant information between two display stages can be effectively utilized, so that the purpose of reducing power consumption waste is achieved. Moreover, since the voltage comparison function is moved to the display driving chip, the comparison function can be implemented by software, so that the structure can be simpler.

[0042] In a fifth aspect, an application processor is provided. The application processor is configured to compare target data corresponding to the same pixel circuit in adjacent two frame image data, and when a comparison result is that a data voltage corresponding to a latter frame target data is greater than a data voltage corresponding to a former frame target data, output a data difference between the adjacent two frame target data; and when the comparison result is that the data voltage corresponding to the latter frame target data is less than or equal to the data voltage corresponding to the former frame target data, not output the data difference. In this embodiment, the voltage comparison function can be moved to the application processor, and the comparison function can be implemented by software and / or hardware, so that the structure can be simpler.

[0043] In a sixth aspect, a display driving chip is configured to output the first control signal or the second control signal based on the sliding information. The display driving chip provided in this embodiment can output the 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 implemented during the sliding display, and the problem of power consumption waste can be well improved due to the use of the redundant electric quantity between the pixel circuits.

[0044] In some embodiments, the sliding information includes a sliding area and a sliding distance, and the display driving chip is configured 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 first control signal or second control signal according to the sliding distance. In this embodiment, the display driving chip can determine the area and the moving distance of the redundant information between the pixel circuits during the sliding process according to the sliding information, so as to achieve more accurate control, such as controlling the output range (i.e., output to which transfer control circuit) and the frequency (such as the electric quantity transfer of one adjacent row each time) of the first control signal or the second control signal.

[0045] In a seventh aspect, an application processor is provided, which is configured to, when drawing each frame of image, if it is found that a sliding function is called, determine sliding information based on the sliding function, 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 the 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 implemented during the sliding display, and the problem of power consumption waste can be well improved due to the use of the redundant electric quantity between the pixel circuits.

[0046] In some embodiments, the sliding information includes a sliding area and a sliding distance, and the application processor is configured 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 first control signal or second control signal according to the sliding distance. In this embodiment, the application processor can determine the area and the moving distance of the redundant information between the pixel circuits during the sliding process according to the sliding information, so as to achieve more accurate control, such as controlling the output range (i.e., output to which transfer control circuit) and the frequency (such as the electric quantity transfer of one adjacent row each time) of the first control signal or the second control signal.

[0047] In an eighth aspect, a display screen is provided, comprising: a display driving chip and a display panel electrically connected; wherein the display panel is the display panel in any one of the preceding aspects; and / or the display driving chip is the display driving chip in any one of the preceding aspects. Since the display screen provided in this embodiment comprises the display panel in any one of the preceding aspects, or comprises the display driving chip in any one of the preceding aspects, the corresponding technical effects of the preceding aspects are achieved, which will not be described here again.

[0048] In a ninth aspect, a control method of a display device is provided, the display device comprising a plurality of pixel circuits, each pixel circuit comprising a storage sub-circuit, the control method comprising: in two adjacent display stages, controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the later display stage to include at least part of the amount of electricity stored in the storage sub-circuit of any one pixel circuit in the previous display stage. In this way, the power waste caused by inter-frame redundancy and the power waste caused by redundancy between pixel circuits can be improved during the display of the display device.

[0049] In some embodiments, the controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the later display stage to include at least part of the amount of electricity stored in the storage sub-circuit of any one pixel circuit in the previous display stage in two adjacent display stages comprises: comparing the adjacent two frame data voltages, and outputting the difference between the adjacent two frame data voltages to the pixel circuit when the comparison result is that the later frame data voltage is greater than the previous frame data voltage. In this embodiment, when the later frame data voltage is greater than the previous frame data voltage, the difference between the adjacent two frame data voltages can be output to the pixel circuit, so that the pixel circuit in the previous display stage does not need to be discharged, and the original amount of electricity can be directly used, and on this basis, additional required electricity can be further supplemented, which can be used for display in the later display stage, thereby improving the problem of power waste.

[0050] In some embodiments, the controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the later display stage to include at least part of the amount of electricity stored in the storage sub-circuit of any one pixel circuit in the previous display stage in two adjacent display stages further comprises: when the comparison result is that the later frame data voltage is less than or equal to the previous frame data voltage, not outputting the voltage to the pixel circuit. In this embodiment, in the later display stage, the pixel circuit does not need to be charged, thereby improving the problem of power waste.

[0051] In some embodiments, the pixel circuit further comprises a discharging circuit electrically connected to the storage sub-circuit; and the step of controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage among the two adjacent display stages to include at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage includes: when the comparison result is that the data voltage corresponding to the latter frame data is smaller than the data voltage corresponding to the former frame data, discharging the storage sub-circuit by the discharging circuit to make the amount of electricity stored in the storage sub-circuit correspond to the data voltage corresponding to the latter frame data. In this example, in order to realize the display of the latter display stage, the storage sub-circuit is discharged, and the discharge here refers to discharging part of the amount of electricity so as to directly correspond to the latter display stage. Compared with the way of discharging all the amount of electricity and then charging in the related art, the problem of power consumption waste can be effectively improved.

[0052] In some embodiments, the step of controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage among the two adjacent display stages to include at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage includes: comparing the target data corresponding to the same pixel circuit in the adjacent two frame image data, and when the comparison result is that the data voltage corresponding to the latter frame target data is greater than the data voltage corresponding to the former frame target data, obtaining the data difference of the adjacent two frame target data, 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 latter frame target data is greater than the data voltage corresponding to the former frame target data, the data difference of the adjacent two frame target data is obtained, then the compensation voltage is obtained based on the data difference, and the compensation voltage is output to the pixel circuit. In this way, the pixel circuit in the former display stage does not need to be discharged, and the original amount of electricity can be directly used, and on this basis, additional amount of electricity required is further supplemented, which can be used for the display of the latter display stage, thereby improving the problem of power consumption waste.

[0053] In some embodiments, the step of controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage among the two adjacent display stages to include at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage includes: when the comparison result is that the data voltage corresponding to the latter frame target data is smaller than or equal to the data voltage corresponding to the former frame target data, not outputting the data difference. In this embodiment, in the latter 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 comprises a discharging circuit electrically connected to the storage sub-circuit; and the step of controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage to include at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage comprises: when the comparison result is that the data voltage corresponding to the target data of the latter frame is smaller than the data voltage corresponding to the target data of the former frame, controlling the discharging circuit to discharge the storage sub-circuit, so that the amount of electricity of the storage sub-circuit corresponds to the target data of the latter frame. In this example, in order to realize the display of the latter display stage, the storage sub-circuit can be discharged. Here, discharging refers to discharging part of the electricity, so that it directly corresponds to the latter display stage. Compared with the way of discharging all the electricity and then charging in the related art, the problem of power waste can be effectively improved.

[0055] In some embodiments, the plurality of pixel circuits comprises a first pixel circuit and a second pixel circuit; and the display device further comprises a transfer control unit; and the step of controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage to include at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage comprises: when drawing each frame of image, if it is detected that a sliding function is called, determining sliding information based on the sliding function; outputting a first control signal or a second control signal to the transfer control unit based on the sliding information; the first control signal is used to make the transfer control unit transfer the amount of electricity in the first pixel circuit to the second pixel circuit, and the second control signal is used to make the transfer control unit 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. Therefore, the charging and discharging process can be quickly realized during the sliding display process, and the problem of power waste can be well improved because the redundant amount of electricity between the pixel circuits is utilized.

[0056] In some embodiments, the sliding information comprises a sliding area and a sliding distance, and the step of outputting the first control signal or the second control signal to the transfer control unit based on the sliding information comprises: 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 moving distance of the redundant information between the pixel circuits during the sliding process can be determined according to the sliding information, so that more accurate control can be realized, such as controlling the output range (i.e., output to which transfer control circuit) and frequency (such as each time corresponding to the charge transfer of one adjacent row) of the first control signal or the second control signal.

[0058] In a tenth aspect, an embodiment of the present application provides a computer storage medium, which stores a computer program. When the computer program is run on a computer (for example, a display device), the display method provided in the fourth aspect and any one of the implementation manners of the fourth aspect is implemented.

[0059] In an 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 is caused to execute the display method provided in the fourth aspect and any one of the implementation manners of the fourth aspect.

[0060] In a twelfth aspect, an embodiment of the present application provides a computer program. When the computer program is run on a computer (for example, a display device), the computer is caused to execute the display method provided in the fourth aspect and any one of the implementation manners of the fourth aspect.

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

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

[0063] Figure 1 A structural block diagram of the display device provided in an embodiment of the present application is shown in FIG. 1.

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

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

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

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

[0068] Figure 6 A charge and discharge process diagram of a storage sub-circuit in adjacent two frame display stages provided for an embodiment of the present application;

[0069] Figure 7 A change state diagram of a display picture in adjacent two frame display stages provided for an embodiment of the present application;

[0070] Figure 8 Another change state diagram of a display picture in adjacent two frame display stages provided for an embodiment of the present application;

[0071] Figure 9 A structural block diagram of a display device provided for an embodiment of the present application;

[0072] Figure 10 A structural diagram of a display device provided for an embodiment of the present application;

[0073] Figure 11 Another structural diagram of a display device provided for an embodiment of the present application;

[0074] Figure 12 A structural diagram of a discharge control unit provided for an embodiment of the present application;

[0075] Figure 13 A structural diagram of an LM393 chip provided for an embodiment of the present application;

[0076] Figure 14 A structural diagram of a display panel connected with a flexible circuit board in an embodiment of the present application;

[0077] Figure 15 Another structural diagram of a display device provided for an embodiment of the present application;

[0078] Figure 16 Another structural diagram of a display device provided for an embodiment of the present application;

[0079] Figure 17 Another structural diagram of a display device provided for an embodiment of the present application;

[0080] Figure 18 A schematic diagram illustrating yet another display screen provided in an embodiment of this application;

[0081] Figure 19 A structural diagram of another display device provided in the embodiments of this application.

[0082] Figure 20 A structural diagram of another display device provided in this application embodiment;

[0083] Figure 21 A schematic diagram illustrating yet another display screen provided in an embodiment of this application;

[0084] Figure 22 A flowchart illustrating a control method for a display device provided in an embodiment of this application;

[0085] Figure 23 A flowchart illustrating another control method for a display device provided in an embodiment of this application;

[0086] Figure 24 A flowchart illustrating another control method for a display device provided in this application embodiment;

[0087] Figure 25 A flowchart illustrating another control method for a display device provided in an embodiment of this application. Detailed Implementation

[0088] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

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

[0090] In the embodiments of this application, unless otherwise expressly specified and limited, the term "electrical connection" can be a direct electrical connection or an indirect electrical connection through an intermediate medium.

[0091] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0092] In the embodiments of the present application, “and / or” describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character “ / ” generally represents that the associated objects before and after it 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), and the like, a smart home device such as a smart television, a smart camera, and the like, a wearable device such as a smart bracelet, a smart watch, smart glasses, and the like, or other devices such as a desktop computer, a laptop computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a smart screen, and the like.

[0094] Please refer to Figure 1 , Figure 1 A structural block diagram of the display device 1000 provided in the embodiments of the present application is shown. The display device 1000 can include a processing unit 10, a display driving unit 20, and a display panel 30.

[0095] The processing unit 10 can include one or more processors, for example: the processing unit 10 can include an application processor (AP), a modem processor, a graphics processing unit (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 processing unit (NPU), etc. Different processors can be integrated in one device or can be independent devices. For example, the above-mentioned multiple processors can be integrated in one system on chip (SoC), or the application processor AP can be a separate chip, and the other processors can be integrated in one SoC, which is not limited in the present application.

[0096] The processing unit 10 can also have a memory (not shown) for storing instructions and data. In some embodiments, the memory in the processing unit 10 is a cache memory. The memory can hold instructions or data that the processing unit 10 has just used or is using repeatedly. If the processing unit 10 needs to use the instructions or data again, it can call them directly from the memory. This avoids repeated access and reduces the processing unit’s 10 latency, thus improving the system’s efficiency.

[0097] The processing unit 10 can also include one or more communication interfaces (referred to simply as interfaces). The interfaces may, for example and without limitation, include 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, among others.

[0098] The MIPI interface can be used to connect the processing unit 10 with a camera, a display screen 200, and the like. In some embodiments, the MIPI interface can include a display serial interface (DSI), a camera serial interface (CSI), and the like. Alternatively, the processing unit 10 and the camera communicate through the CSI interface to implement the photographing function of the display device. Alternatively, the processing unit 10 and the display screen 200 communicate through the DSI interface to implement the display function of the display device. The display screen 200 can include the display driving unit 20 and the display panel 30. The processing unit 10 can communicate with the display driving unit 20 in the display screen 200 through the DSI interface. Here, the display driving unit 20 can be integrated on the display panel 30, or can be arranged on a circuit board connected with the display panel 30. The circuit board can be a flexible circuit board, for example, and the display driving unit 20 can be packaged on the flexible circuit board through a chip on film. Of course, in some other embodiments, the display driving unit 20 can be arranged on a hard circuit board (such as a main control board) connected (such as plugged) with the flexible circuit board, or the display driving unit 20 can be integrated with the processing unit 10 in the same SoC, which is not limited in the present application.

[0099] It can be understood that the interface connection relationship between the structures and units shown in the embodiments of the present application is only illustrative and does not constitute a limitation on the structure of the display device 1000. In some other embodiments of the present application, the display device 1000 can also use different interface connection modes or combinations of multiple interface connection modes in the above embodiments.

[0100] Figure 2 Another structural block diagram of the display device 1000 provided by the embodiments of the present application.

[0101] In combination with Figure 1 and Figure 2As shown, the processing unit 10 can be an application processor AP in which a GPU, a CPU and an ISP are integrated. The display device 1000 can realize the display function by connecting the display screen 200 through the application processor AP. The application processor AP can obtain display information from, for example, a random memory through a double data rate (DDR), and then process the display information through the GPU, the CPU and the ISP to generate image data, and then output the image data by 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. One or more GPUs can be included in the application processor AP, which executes program instructions to generate or change display information, such as drawing images, changing the scaling ratio, color and high dynamic range imaging (English: High Dynamic Range Imaging, abbreviated as HDRI or HDR) of images, and the like.

[0102] The display screen 200 is used to display images, videos, etc. As described above, the display screen 200 can include a display driving unit 20 and a display panel 30. In some examples, as Figure 2As shown, the display driving unit 20 can be a display driver integrated circuit (DDIC). The DDIC is an apparatus inside the display screen 200 for controlling the operation of the display screen. For example, the DDIC can generate certain electrical signals to control the display panel 30 to display images. For example, the DDIC can 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 the like). Then, the image data can be converted through a gamma module to generate a voltage signal. Finally, the source driving module can output the generated voltage signal as a data voltage to the display panel 30 according to a certain driving sequence. Any one of the demura module and the gamma module can be implemented through a software algorithm or through a designed hardware circuit, which is not limited in the present application. The source driving module can be a source driving circuit, which can be used to output corresponding data voltages to multiple columns of pixel circuits in the display panel 30, for example. The display panel 30 can be an organic light-emitting diode (OLED) panel, an active-matrix organic light-emitting diode (AMOLED) panel, a flexible light-emitting diode (FLED) panel, a quantum dot light-emitting diode (QLED) panel, and the like. Figure 1 In an embodiment, the display panel 30 is an OLED panel. In some embodiments, the display device 1000 can include one or N display screens, where N is a positive integer greater than 1. In some embodiments, one display screen can include one or N DDICs. In some embodiments, as shown in FIG. 1A and FIG. 1B, the display device 1000 can include one or N display screens, where N is a positive integer greater than 1. In some embodiments, one display screen can include one or N DDICs. Figure 1 Figure 2 As shown in FIG. 1A and FIG. 1B, the processing unit 10 is an application processor (AP), the display driving unit 20 is a display driver integrated circuit (DDIC), and the display panel 30 is an OLED panel. The application processor (AP) is electrically connected to the display driver integrated circuit (DDIC), and the display driver integrated circuit (DDIC) is also electrically connected to the OLED panel.

[0103] Figure 3 ​A structural diagram of a display panel 30 is provided in embodiments of the present application. The display panel 30 includes an active area (AA) AA. The active area AA includes a plurality of sub-pixels P, which can be arranged in an array. The sub-pixel P is the smallest unit for the display panel 30 to display a picture.

[0104] In some examples, one sub-pixel P includes one 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 driving signal, and each light-emitting unit can emit light under the driving action of the driving signal generated by the corresponding pixel circuit. Based on this, the light-emitting units in the plurality of sub-pixels can be driven to emit light by the pixel circuits corresponding to the light-emitting units, so that the display panel 30 can display a predetermined image in the active area AA. Specifically, the plurality of sub-pixels P can include a plurality of sub-pixels P of different light-emitting colors. For example, 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 (gray scale) of the sub-pixels P of different colors can be adjusted, and a variety of colors can be displayed by color combination and superposition, so as to realize full-color display of the display panel 30.

[0105] Continuing to refer to the display panel 30 in Figure 3 , Figure 3 The display panel 30 can also include a peripheral area BB, which can be located on at least one side of the active area AA, for example, in Figure 3 The peripheral area BB can be used to arrange some signal lines, test circuits, gate driving circuits, etc. Here, the gate driving circuit can also be arranged in the active area AA, such as being scattered in each sub-pixel row, and the present application can not limit the arrangement position of the gate driving circuit.

[0106] Figure 4 A circuit diagram of a display unit (including three pixel circuits and light-emitting units OLEDs located in three sub-pixels P) is provided in embodiments of the present application. As shown in Figure 4As shown, the display panel 30 can include a plurality of display units composed of red, green and blue sub-pixels P. Each pixel circuit (for example, the pixel circuit of the red sub-pixel at the leftmost in the figure) is the simplest structure composed of a storage capacitor Cs and two thin film transistors (TFT) T1 and T2. T2 constitutes a constant current source for driving the OLED to emit light, and the size of the current is controlled by the size of the storage capacitor Cs, thereby controlling the light emitting intensity. The screen display is mainly determined by the proportion of the light emitting intensity of the red, blue and green OLEDs, and the light emitting intensity of the OLEDs 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 A structure diagram of a pixel circuit and a light emitting unit provided for some embodiments of the present application is shown. The pixel circuit 40 can include a storage sub-circuit 401, a driving sub-circuit 402, a switching sub-circuit 403 and a discharging sub-circuit 404. The storage sub-circuit 401, the driving sub-circuit 402, the switching sub-circuit 403 and the discharging sub-circuit 404 are electrically connected to the first node N1, and the storage sub-circuit 401, the driving sub-circuit 402 and the switching sub-circuit 403 are electrically connected to the first voltage terminal Vdd. The driving sub-circuit 402 is also electrically connected to the OLED. The switching sub-circuit 403 is electrically connected to the data voltage line Vdata and the first scan control line Vgate. In the writing stage, the switching sub-circuit 403 transmits the data voltage transmitted by the data voltage line Vdata to the first node N1 under the control of the first scan control line Vgate1, thereby charging the storage sub-circuit 401. In the light emitting stage, the driving sub-circuit 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 by the storage sub-circuit 401 can maintain the voltage of the first node N1 for a period of time, so as to maintain the driving sub-circuit 402 to be turned on and ensure the OLED to emit light normally. In addition, the pixel circuit 40 also includes an initialization stage, at which the discharging sub-circuit 404 transmits the initialization voltage Vinit to the first node N1 under the control of the second scan control line Vgate2, so as to refresh the voltage of the first node N1. The storage sub-circuit 401 can be a storage capacitor Cs, the driving sub-circuit 402 can be a thin film transistor T2, the switching sub-circuit 403 can be a thin film transistor T1, and the discharging sub-circuit 404 can be a thin film transistor T3. In some examples, the above initialization stage, writing stage and light emitting stage can be referred to as one display stage.

[0108] During the display process of the display screen 200, the display screen will be refreshed at a certain refresh frequency. For example, at a refresh rate of 120 HZ, the display screen 200 is equivalent to being refreshed once every 8.3 ms. In combination with the above description of the pixel circuit, the display screen 200 is equivalent to being refreshed once every 8.3 ms, and the storage capacitor Cs is charged once every 8.3 ms. Therefore, the storage capacitor Cs is charged once every 8.3 ms, and the OLED is driven to emit light once every 8.3 ms. Figure 5It can be known from the embodiments that some display screens need to avoid the influence of the current frame picture on the next frame picture when refreshing the next frame, for example, each sub-pixel storage sub-circuit 401 is discharged by the discharge sub-circuit 404 as shown in the figure, and the current frame storage is completely initialized, and then a new charge is performed to the required amount of the next frame, that is, as shown in the figure, Figure 5 Figure 6 Figure 6 The charging and discharging process of the storage sub-circuit in the adjacent two frame display stages is provided for the embodiments of the application.

[0109] The inventors of the application further found that in the above driving mode, the frame-to-frame and pixel-to-pixel of the pixel circuit are completely decoupled, but in fact, there is redundant information between the frames and the pixel circuits, and discarding all this information causes all the pixel circuits to be recharged and discharged every time the current frame is refreshed, so the current pixel circuit charging and discharging mode has a great power consumption waste. For example, Figure 7 Figure 7 A change state diagram of the display picture in the adjacent two frame display stages is provided for the embodiments of the application, and it can be seen from the figure that the pixel points E1 and E2 marked in the front and rear two frames have the same picture, so the required data voltage is equal, and the required amount of the storage capacitor is also consistent, so the storage capacitor at this point actually does not need to be charged and discharged. However, due to the fact that some pixel circuits cannot utilize the inter-frame redundant information, the current storage capacitor will be discharged, and the storage capacitor will be charged to the required amount of the next frame, that is, the power consumption waste caused by inter-frame redundancy. Therefore, for many application scenarios, many pixel points do not change between the front and rear two frames (which can be referred to as a non-dirty area), but a new charge and discharge still occurs, resulting in power consumption waste. In addition, for example, Figure 8 Figure 8 Another change state diagram of the display picture in the adjacent two frame display stages is provided for the embodiments of the application. For the sliding scenario that the user often involves in the use process, in this scenario, the sliding only causes the content of the adjacent upper and lower rows of pixels to be translated, but since the picture of the pixel point position of the next frame is completely changed compared with the current frame, each pixel point still needs to be recharged and discharged, so there is not only inter-frame redundancy but also pixel-to-pixel redundancy in the OLED pixel circuit, resulting in power consumption waste.

[0110] Based on the above-mentioned problems, the embodiments of the application provide a display device 1000. As shown in the figure, Figure 9 Figure 9 ​​​​​A structural block diagram of the display device 1000 provided by the embodiments of the present application is shown in FIG. 1. The display device 1000 includes a plurality of pixel circuits 40 and a control device 60. The pixel circuit 40 can be as previously described, or can be in other forms, such as a "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, and the number in front of "C" represents the number of storage capacitors.

[0111] The control device 60 is electrically connected to the pixel circuit 40, and the pixel circuit 40 includes a storage sub-circuit 401. The control device 60 is configured to control the amount of electricity stored in the storage sub-circuit 401 of the pixel circuit 40 in a later display stage to include at least part of the amount of electricity stored in the storage sub-circuit 401 of any pixel circuit 40 in a previous display stage. Here, the two display stages can refer to two adjacent display frames (i.e., as shown in FIG. 2), or can refer to two stages in the same display frame (e.g., in a sliding display, when the sliding time is less than the time length of one frame, it is considered that there are multiple display stages within one display frame). Figure 7 and Figure 8 The two display stages can refer to two adjacent display frames (i.e., as shown in FIG. 2), or can refer to two stages in the same display frame (e.g., in a sliding display, when the sliding time is less than the time length of one frame, it is considered that there are multiple display stages within one display frame).

[0112] The "controlling the amount of electricity stored in the storage sub-circuit 401 of the pixel circuit 40 in a later display stage to include at least part of the amount of electricity stored in the storage sub-circuit 401 of any pixel circuit 40 in a previous display stage" includes at least the following four cases:

[0113] Case 1: For the same pixel circuit 40, the amount of electricity stored in the storage sub-circuit 401 in the previous display stage is not released, and the pixel circuit 40 is driven and displayed by using the previously stored electricity in the later display stage.

[0114] Case 2: For the same pixel circuit 40, the amount of electricity stored in the storage sub-circuit 401 in the previous display stage is not released, and the pixel circuit 40 is driven and displayed by using the previously stored electricity and the newly supplemented electricity in the later display stage.

[0115] Case 3: For the same pixel circuit 40, a part of the amount of electricity stored in the storage sub-circuit 401 in the previous display stage is released, and the pixel circuit 40 is driven and displayed by using the remaining electricity in the later display stage.

[0116] Case 4: for two pixel circuits 40 (such as the first pixel circuit and the second pixel circuit), the control device 60 controls the first pixel circuit to release all the electric quantity stored in the storage sub-circuit in the previous display stage, and to transfer all the electric quantity stored in the storage sub-circuit of the second pixel circuit to the first pixel circuit in the next display stage, and the first pixel circuit drives and displays by using the transferred electric quantity.

[0117] In the above cases 1-3, the electric quantity stored in the storage sub-circuit 401 of the pixel circuit 40 in the next display stage includes at least part of the electric quantity stored by itself in the previous display stage; in the above case 4, the electric quantity stored in the storage sub-circuit of the first pixel circuit in the next display stage includes all the electric quantity stored by any other pixel circuit (such as the second pixel circuit) in the previous display stage. The above second pixel circuit can be any pixel circuit in the display panel except the first pixel circuit.

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

[0119] Embodiment 1: as shown in Figure 10 and Figure 11 , a structure diagram of a display device provided by the present application is shown in Figure 10 , and a structure diagram of another display device provided by the present application is shown in Figure 11 . 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 end of the switch sub-circuit 403 of the pixel circuit 40). The voltage comparator 601 is used to compare the adjacent two frames of data voltage, 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 adjacent two frames of data voltage is output to the pixel circuit 40. That is, it is equivalent to the above case 2, which can facilitate the driving and display of the remaining electric quantity in the previous display stage and the newly supplemented electric quantity. 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 case 1 or 3. It can be understood that when corresponding to the above case 3, that is, when the comparison result is that the data voltage of the next frame is less than the data voltage of the previous frame, the storage sub-circuit 401 can also be discharged (here, it means to discharge part of the electric quantity) 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 electric quantity stored in the storage sub-circuit 401 corresponds to the data voltage of the next frame.

[0120] For example, the controller 60 may further include a discharge control unit electrically connected to the storage sub-circuit 401, for discharging the storage sub-circuit 401 so that the amount of electricity stored in the storage sub-circuit 401 corresponds to the voltage of the next frame of data or the target data of the next frame (e.g., data corresponding to a pixel circuit in image data generated by the application processor AP). See also, for example, [link to documentation]. Figure 12 , Figure 12 This is a structural diagram of a discharge control unit 50 provided in an embodiment of this application. The discharge control unit 50 may include a timing controller 501, a gate driving circuit 502, and a discharge circuit 503. The gate driving circuit 502 is electrically connected between the timing controller 501 and the discharge circuit 503, and the discharge circuit 503 is electrically connected to the storage sub-circuit 401. The discharge circuit 503 may be the same circuit as the discharge circuit 404. The configuration of the gate driving circuit can be referred to the preceding description. The timing controller 501 may be integrated into the display driver chip DDIC. When discharge is required (e.g., when the comparison result shows that the voltage of the next frame data is less than the voltage of the previous frame data), the timing controller 501 can send a target timing signal to the gate driving circuit 502. Based on the target timing signal, the gate driving circuit 502 can output a second scan control signal via the second scan control line Vgate2 to control the discharge circuit 503 to discharge the storage sub-circuit 401.

[0121] In some implementations, voltage comparator 601 includes an LM393 chip, see [link to relevant documentation]. Figure 13 , Figure 13 This is a structural diagram of an LM393 chip provided in an embodiment of this application. The LM393 chip is a low-power, low-voltage operating, and high-precision voltage comparator. The chip's pins are as follows: Figure 13 As shown, VCC is the power supply voltage, GND is the ground terminal, and it also includes two sets of comparison units. The first set of comparison units includes a non-inverting input terminal 1IN+, an inverting input terminal 1IN-, and an output terminal 1OUT. The second set of comparison units includes a non-inverting input terminal 2IN+, an inverting input terminal 2IN-, and an output terminal 2OUT. This application does not limit the number of comparison units. Here, the output terminals of each set of comparison units can be electrically connected to different pixel circuits 40. For example, two sets of comparison units can be connected to two adjacent pixel circuits 40 in the same column of pixel circuits 40. Furthermore, the non-inverting input terminal and the inverting input terminal of each set of comparison units can receive two adjacent frames of data voltage (e.g., the non-inverting input terminal receives the data voltage of the previous frame, and the inverting input terminal receives the data voltage of the next frame). For example, the implementation method can be found in [reference needed]. Figure 10, two data voltage lines (Vdata1, Vdata2) are arranged to be electrically connected to the same group of comparison units at the same direction input end and the reverse direction input end respectively; or for example, the controller 60 can further include a selection switch 602, and a selection switch 602 can also be added between a data voltage line Vdata and the same group of comparison units at the same direction input end and the reverse direction input end (i.e. as shown in Figure 11 , so as to output the previous frame data voltage to the same group of comparison units at the same direction input end and output the next frame data voltage to the reverse direction input end in time division. 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, as long as it can output the previous frame data voltage to the same group of comparison units at the same direction input end and output the next frame data voltage to the reverse direction input end in time division.

[0122] Referring to Figure 14 , Figure 14 , the structure diagram of the display panel 30 and the flexible circuit board 301 after connection in the embodiment of the present application, wherein the flexible circuit board 301 is not bent to the back of the display panel 30 for clear illustration. In the first embodiment, the above-mentioned voltage comparator 601 can be arranged in the display panel 30 (the display area AA or the peripheral area BB), or can be arranged on the flexible circuit board 301 connected to the display panel 30. Similarly, the above-mentioned selection switch 602 can be arranged in the display panel 30 (the display area AA or the peripheral area BB), or can be arranged on the flexible circuit board 301 connected to the display panel 30.

[0123] The second embodiment: the controller 60 includes a display driving chip DDIC. Referring to Figure 15 , Figure 15 , the structure diagram of another display device provided in the embodiment of the present application. The display driving chip DDIC can be arranged on the flexible circuit board 301 connected to the display panel 30. Figure 14The display panel 30 (such as the area near the flexible circuit board 301 in the peripheral area) or the flexible circuit board 301 as shown. The display driving chip DDIC can be electrically connected to the pixel circuit (such as the data voltage input end of the switch sub-circuit 403 of the pixel circuit 40) through the data voltage line Vdata. The display driving chip DDIC is used to compare the data voltage of two adjacent frames, and when the comparison result is that the data voltage of the latter frame is greater than that of the former frame, the difference between the data voltage of the two adjacent frames is output to the pixel circuit. Thus, the storage sub-circuit can be charged in the write stage of the pixel circuit. That is, equivalent to the above case 2, the subsequent light-emitting stage can be driven and displayed by using the originally stored electric quantity and the newly supplemented electric quantity. In addition, the display driving chip DDIC is also used to output no voltage to the pixel circuit when the comparison result is that the data voltage of the latter frame is less than or equal to that of the former frame. That is, equivalent to the above case 1 or 3. It can be understood that when corresponding to the above case 3, that is, when the comparison result is that the data voltage of the latter frame is less than that of the former frame, the storage sub-circuit 401 can be discharged (here, it refers to discharging part of the electric quantity) 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 electric quantity stored in the storage sub-circuit 401 corresponds to the data voltage of the latter frame.

[0124] Embodiment three: the control device 60 includes an application processor AP and a display driving chip IC. Referring to Figure 16 , Figure 16 Another structure diagram of a display device provided by the embodiment of the present application. Similarly, the display driving chip IC can be arranged on Figure 14The display panel 30 (such as the area close to the flexible circuit board 301 in the peripheral area) or the flexible circuit board 301 is shown. The application processor AP can be disposed 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 target data corresponding to the same pixel circuit in adjacent two 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 former frame, the data difference between the adjacent two frames of target data is output. The display driving chip DDIC is electrically connected between the application processor AP and the pixel circuit 40, and the display driving 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 sub-circuit can be supplemented with power during the write stage of the pixel circuit. That is, equivalent to the above-mentioned case 2, the subsequent light-emitting stage can be driven and displayed by using the originally stored power and the newly supplemented power. In addition, the application processor AP is also used to, when the comparison result is that the data voltage of the latter frame is less than or equal to the data voltage of the former frame, not outputting the data difference to the display driving chip DDIC. That is, equivalent to the above-mentioned case 1 or 3, at this time, the display driving chip DDIC also does not output the compensation voltage to the pixel circuit. It can be understood that when corresponding to the above-mentioned case 3, that is, when the comparison result is that the data voltage of the latter frame is less than the data voltage of the former frame, the storage sub-circuit 401 can be discharged (here, it means to discharge part of the power) 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 power stored in the storage sub-circuit 401 corresponds to the target data of the latter frame.

[0125] Embodiment four: the control device 60 includes an application processor AP. Referring to Figure 17 , Figure 17 A structure diagram of another display device provided by the embodiment of the application is shown. Similarly, the application processor AP can be disposed 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 target data corresponding to the same pixel circuit in adjacent two frames of image data (the comparison function shown in the dashed box in Figure 2 , at this time, the comparison function can be realized in the application processor AP by means of software and / or hardware integrated circuit), 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 former frame, the data difference between the adjacent two frames of target data is obtained, and a compensation voltage is obtained based on the data difference (such as Figure 2The compensation voltage generated by the DDIC is output to the pixel circuit. This allows for replenishment of power to the storage sub-circuit during the pixel circuit's write phase. This is equivalent to case 2 above, where the previously stored power and the newly replenished power can be used to drive the display during the subsequent light-emitting phase. Furthermore, the application processor (AP) is also used to prevent the output of the compensation voltage to the pixel circuit when the comparison result shows that the voltage of the next frame's data is less than or equal to the voltage of the previous frame's data. This is equivalent to cases 1 or 3 above. Understandably, in case 3 above, where the comparison result shows that the voltage of the next frame's data is less than the voltage of the previous frame's data, under the control of the second scan control signal output from the second scan control line Vgate2, the discharge circuit 404 (or discharge circuit 503) can discharge (here, partially discharging) the storage sub-circuit 401, so that the power stored in the storage sub-circuit 401 corresponds to the target data of the next frame.

[0126] Figure 18 This is a schematic diagram illustrating yet another display screen provided in an embodiment of this application. For example... Figure 18 As shown, the display screen includes pixels G, and one pixel G can correspond to one preceding display unit, i.e., three sub-pixels. In two adjacent display frames, any of the schemes described in embodiments one to four above can be used, utilizing inter-frame information (temporal redundancy) to avoid completely discharging the current sub-pixel each time. By designing and adding a voltage comparison process, the voltage of the same sub-pixel in two consecutive frames is compared to determine whether to intelligently charge and discharge the storage capacitor in the sub-pixel. This reduces the number of times the pixel is charged and avoids excess charge being discharged, thereby effectively reducing losses.

[0127] Example 5: The controller 60 includes a transfer control circuit 603. Please refer to [link / reference]. Figure 19 As shown, Figure 19 This is a structural diagram of another display device provided in an embodiment of this application. 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. A transfer control circuit 603 is electrically connected between the first pixel circuit 40A and the second pixel circuit 40B. The transfer control circuit 603 is used to transfer the charge in the first pixel circuit 40A to the second pixel circuit 40B based on a first control signal, and to transfer the charge in the second pixel circuit 40B to the first pixel circuit 40A based on a second control signal. That is, equivalent to case 4 above, the transferred charge can be used to drive the display in the subsequent light-emitting stage.

[0128] For example, the storage sub-circuit 401 in the first pixel circuit 40A is a first storage sub-circuit 4011, the driving sub-circuit 402 in the first pixel circuit 40A is a first driving sub-circuit 4021, the first end of the first storage sub-circuit 4011 is electrically connected with the control end of the first driving sub-circuit 4021, and the second end of the first storage sub-circuit 4011 is electrically connected with the first end of the first driving sub-circuit 4021. The storage sub-circuit 401 in the second pixel circuit 40B is a second storage sub-circuit 4012, the driving sub-circuit 402 in the second pixel circuit 40B is a second driving sub-circuit 4022, the first end of the second storage sub-circuit 4012 is electrically connected with the control end of the second driving sub-circuit 4022, and the second end of the second storage sub-circuit 4012 is electrically connected with the first end of the second driving sub-circuit 4022. For reference Figure 20 , Figure 20 A structure diagram of another display device provided by the embodiment of the present application is provided. 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 with 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 with the first end of the first storage sub-circuit 4011, and the control end of the first control circuit 711 is used for receiving 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 with 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 with the first end of the second storage sub-circuit 4012, and the control end of the second control circuit 721 is used for receiving a second control signal.

[0129] For example, continuing to refer to Figure 20The first transfer circuit 712 includes a first operational amplifier 7120, and the first control circuit 711 includes a first control transistor 7110; the non-inverting input terminal a1 of the first operational amplifier 7120 is grounded, the inverting input terminal b1 is electrically connected with 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 with the second end of the second storage sub-circuit 4012, the second electrode of the first control transistor 7110 is electrically connected with the first end of the first storage sub-circuit 4011, and the control electrode of the first control transistor 7110 is used for receiving 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 non-inverting input terminal a1 of the second operational amplifier 7220 is grounded, the inverting input terminal b1 is electrically connected with the first end of the first storage sub-circuit 4011 and the first electrode of the second control transistor 7210, the output terminal c1 is electrically connected with the second end of the first storage sub-circuit 4011, the second electrode of the second control transistor 7210 is electrically connected with the first end of the second storage sub-circuit 4012, and the control electrode of the second control transistor 7210 is used for receiving a second control signal. The first control signal and the second control signal can be high-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 short-circuited with the non-inverting input terminal a1, and the inverting input terminal b1 has a very high resistance and is in a virtual open state. When the first control transistor 7011 is turned on, since the output terminal c1 of the first operational amplifier 7120 is connected with 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 electric quantity in the first storage sub-circuit 4011 can flow into the second storage sub-circuit 4012, and finally the transfer of the electric quantity is realized.

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

[0132] Continuing to refer to Figure 20 ​In embodiment five, the controller 60 may further include an application processor (AP) and a display driver chip (DDIC). The locations of the application processor (AP) and the display driver chip (DDIC) are described above. The application processor (AP), when rendering each frame of the image, determines sliding information based on a sliding function call (such as scroll) if such a call is detected. The display driver chip (DDIC) is electrically connected between the application processor (AP) and the transfer control circuit 603, and is used to output a first control signal or a second control signal to the display panel based on the sliding information.

[0133] For example, 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 the transfer control circuit connected to the pixel circuit in the sliding area, and to control the frequency of the output first control signal or second control signal according to the sliding distance.

[0134] Figure 21 This is a schematic diagram illustrating yet another display screen provided in an embodiment of this application. For example... Figure 21 As shown, the display screen includes multiple sub-pixel rows. Taking the first, second, and third sub-pixel rows in the figure as examples (the first, second, and third sub-pixel rows can be adjacent or not adjacent, as long as the spacing between the first and second sub-pixel rows is equal to the spacing between the second and third sub-pixel rows), during the process of the display screen sliding 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 inter-pixel information (spatial redundancy), it is possible to rely on the identification of offset areas and distances. For the identified non-dirty areas (such as the area where the second and third sub-pixel rows are located, referring to areas that can be replaced by a previously existing pixel row along the sliding direction), by adding a transfer control circuit 603, the stored charge of adjacent rows is transferred, and then the storage capacitor of the original pixel is discharged and recharged by the transfer control circuit 603. For newly emerging dirty areas, intelligent charging and discharging can be performed using any of the methods described in Examples 1 to 4 above.

[0135] Figure 21 The illustration uses a downward sliding motion as an example. It can be understood that the sliding direction of the display screen in this embodiment is not limited to this. For example, it can also be a downward sliding motion, or it can be a left-right sliding motion as shown in the illustration.

[0136] Based on the above-mentioned embodiments of the display device 1000, the present application also provides embodiments of a display panel, a display driving chip and an application processor. For example, in some embodiments, a display panel 30 is provided, as shown in FIG. 6A, which includes the above-mentioned plurality of pixel circuits 40 and the voltage comparator 601. In some embodiments, a display panel 30 is provided, as shown in FIG. 6B, which includes the above-mentioned plurality of pixel circuits 40 and the voltage comparator 601 and the selection switch 602. In some embodiments, a display panel 30 is provided, as shown in FIG. 6C, which includes the above-mentioned plurality of pixel circuits 40 and the voltage comparator 601 and the transfer control circuit 603. For another example, in some embodiments, a display driving chip DDIC is provided, which can be any one of the above-mentioned display driving chips DDIC. As shown in FIG. 7A, the display driving chip DDIC can be arranged on the flexible circuit board 301, or as shown in FIG. 7B, the display driving chip DDIC can be arranged on the display panel 30. For yet another example, in some embodiments, an application processor AP is provided, which can be any one of the above-mentioned application processors AP. In this case, the display device 1000 can include a rigid circuit board, such as a main control board, connected to the flexible circuit board, and the application processor AP can be arranged on the main control board. Figure 10 Figure 11 Figure 19 Figure 14

[0137]

[0138] Figure 22 A flowchart of a control method of a display device according to an embodiment of the present application.

[0139] In some embodiments, the step of controlling the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage, including at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage, includes the following steps.

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

[0141] S12, when the comparison result is that the voltage of the latter frame of data is greater than the voltage of the former frame of data, outputting the difference between the voltages of the two adjacent frames of data to the pixel circuit.

[0142] ​​​​​In the embodiment, when the voltage of the next frame data is greater than the voltage of the previous frame data, the difference between the voltages of the two adjacent frame data is output to the pixel circuit. In this way, the pixel circuit of the previous display stage does not need to be discharged, and the original electric quantity can be directly used. On this basis, additional electric quantity required is further supplemented, which is used for display of the next display stage, thereby improving the problem of power consumption waste.

[0143] In some embodiments, the controlling of the electric quantity stored in the storage sub-circuit of the pixel circuit in the next display stage in the two adjacent display stages includes at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in the previous display stage, and further includes:

[0144] S13, 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.

[0145] In the embodiment, in the next display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0146] On this basis, for example, the controlling of the electric quantity stored in the storage sub-circuit of the pixel circuit in the next display stage in the two adjacent display stages includes at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in the previous display stage, and further includes:

[0147] S14, 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 sub-circuit is controlled to discharge the storage sub-circuit, so that the electric quantity stored in the storage sub-circuit corresponds to the voltage of the next frame data.

[0148] In the example, in order to realize the display of the next display stage, the storage sub-circuit is discharged. The discharge here means that part of the electric quantity is discharged, so as to directly correspond to the next display stage. Compared with the way that all the electric quantity is discharged and then charged in the related art, the problem of power consumption waste can be effectively improved.

[0149] Figure 23 A flowchart of another control method of a display device provided by the embodiment of the application.

[0150] In some embodiments, the controlling of the electric quantity stored in the storage sub-circuit of the pixel circuit in the next display stage in the two adjacent display stages includes at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in the previous display stage, and further includes:

[0151] S21, comparing target data corresponding to the same pixel circuit in adjacent two frame image data.

[0152] S22, 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 former frame, obtaining a data difference of the target data of the adjacent two frames.

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

[0154] 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 former frame, the data difference of the target data of the adjacent two frames can be obtained. Then, the compensation voltage is obtained based on the data difference, and the compensation voltage is output to the pixel circuit. In this way, the pixel circuit of the former display stage does not need to be discharged, and the original electric quantity can be directly used. On this basis, the additional electric quantity required is further supplemented, which can be used for the display of the latter display stage, thereby improving the problem of power consumption waste.

[0155] In some embodiments, the control of the electric quantity stored in the storage sub-circuit of the pixel circuit in the latter display stage in the adjacent two display stages includes at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in the former display stage, and further includes:

[0156] S24, 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 former frame, not outputting the data difference.

[0157] In this embodiment, in the latter display stage, the pixel circuit does not need to be charged, thereby improving the problem of power consumption waste.

[0158] On this basis, exemplary, the control of the electric quantity stored in the storage sub-circuit of the pixel circuit in the latter display stage in the adjacent two display stages includes at least part of the electric quantity stored in the storage sub-circuit of any pixel circuit in the former display stage, and further includes:

[0159] S25, when the comparison result is that the data voltage corresponding to the target data of the latter frame is less than the data voltage corresponding to the target data of the former frame, controlling the discharge sub-circuit to discharge the storage sub-circuit, so that the electric quantity of the storage sub-circuit corresponds to the target data of the latter frame.

[0160] In this example, in order to realize the display of the latter display stage, the storage sub-circuit can be discharged. Here, the discharge refers to discharging part of the electric quantity, so as to directly correspond to the latter display stage. Compared with the way of discharging all the electric quantity and then charging in the related art, the problem of power consumption waste can be effectively improved.

[0161] Figure 24 A flowchart of another display device control method provided by the embodiments of the present application.

[0162] In some embodiments, the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage includes at least part of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage.

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

[0164] S32, outputting a first control signal or a second control signal to the transfer control circuit based on the sliding information, wherein the first control signal is used to make the transfer control circuit transfer the amount of electricity in the first pixel circuit to the second pixel circuit, and the second control signal is used to make the transfer control unit transfer the amount of electricity 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. Thus, the charging and discharging process can be quickly realized in the sliding display process, and the problem of power consumption waste can be well improved because the redundant amount of electricity between the pixel circuits is utilized.

[0166] Figure 25 A flowchart of another display device control method provided by the embodiment of the present application is shown.

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

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

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

[0170] In this example, the area and the moving distance of the redundant information between the pixel circuits in the sliding process can be determined according to the sliding information, so that more accurate control can be realized, such as controlling the output range (i.e., output to which transfer control circuit) and the frequency (such as the amount of electricity corresponding to one adjacent row each time) of the first control signal or the second control signal, and for the area where there is no redundant information in the sliding process, the control method described above can be used. Figure 22 and Figure 23 The corresponding control method is improved.

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

[0172] When any of the above modules or units are implemented in software, the software is stored in the form of computer program instructions and is stored in the memory, and the processor can be used to execute the program instructions to implement the above method processes. The processor can 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 micro controller unit (MCU), or an artificial intelligence processor, and various computing devices running software, each of which can include one or more cores for executing software instructions to perform operations or processing. The processor can be a separate semiconductor chip, or can be integrated with other circuits to form a semiconductor chip, for example, it can form a SoC (System on Chip) with other circuits such as coding and decoding circuits, hardware acceleration circuits, or various buses and interface circuits, or it can be integrated as a built-in processor in an ASIC. The ASIC that integrates the processor can be packaged separately or packaged together with other circuits. In addition to including cores for executing software instructions to perform operations or processing, the processor can further include necessary hardware accelerators, such as field programmable gate arrays (FPGAs), programmable logic devices (PLDs), or logic circuits that implement special-purpose 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 special-purpose digital circuit, a hardware accelerator, or a non-integrated discrete device, which can run necessary software or be independent of software to execute the above method processes.

[0174] Some embodiments of the present application provide a computer storage medium (for example, a non-transitory computer-readable storage medium) having a computer program stored therein, which, when executed on a computer (for example, a display device), causes the computer to perform the display method described in any of the above embodiments.

[0175] Exemplarily, the computer storage medium described above can include, but is not limited to, a magnetic storage device (for example, a hard disk, a floppy disk or a magnetic tape, etc.), an optical disk (for example, a compact disk (CD), a digital versatile disk (DVD), etc.), a smart card and a flash memory device (for example, an erasable programmable read-only memory (EPROM), a card, a stick or a key drive, etc.). The various computer storage media described in the present application can represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" can include, but is not limited to, a wireless channel and various other media capable of storing, containing and / or carrying instructions and / or data.

[0176] Some embodiments of the present application also 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, when the computer program instructions are executed on a computer (for example, a display device), the computer program instructions cause the computer to perform the display method as described in the above embodiments.

[0177] Some embodiments of the present application also provide a computer program. When the computer program is executed on a computer (for example, a display device), the computer program causes the computer to perform the display method as described in the above embodiments.

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

[0179] The above is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display device, characterized in that, include: Multiple pixel circuits and a controller, wherein the controller is electrically connected to at least one pixel circuit; The pixel circuit includes a storage sub-circuit; The pixel circuit is used to output the driving current, and the storage sub-circuit is used to maintain the driving current for a period of time. The controller is used to: control the amount of electricity stored in the storage sub-circuit of the pixel circuit in the latter display stage, including at least a portion of the amount of electricity stored in the storage sub-circuit of any pixel circuit in the former display stage, in two adjacent display stages. The plurality of pixel circuits includes 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; the transfer control circuit is configured to: transfer the power stored in the storage sub-circuit of the second pixel circuit to the second pixel circuit based on a first control signal when the power stored in the storage sub-circuit of the second pixel circuit in the next display stage is equal to the power stored in the storage sub-circuit of the first pixel circuit in the previous display stage; and transfer the power stored in the storage sub-circuit of the first pixel circuit to the first pixel circuit based on a second control signal when the power stored in the storage sub-circuit of the first pixel circuit in the next display stage is equal to the power stored in the storage sub-circuit of the second 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 voltage of two adjacent frames of data transmitted by the data voltage line, and when the comparison result is that the voltage of the later frame of data is greater than the voltage of the previous frame of data, output the difference between the voltages of the two adjacent frames of data to the pixel circuit. The voltage comparator is also used 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.

3. The display device according to claim 2, characterized in that, The voltage comparator includes a non-inverting input, an inverting input, and an output. The non-inverting input is electrically connected to one data voltage line, the inverting input is electrically connected to another data voltage line, and the output is electrically connected to the pixel circuit. 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 also includes a selection switch, and the voltage comparator includes a non-inverting input terminal, an inverting input terminal, and an output terminal; The selection switch is electrically connected between the data voltage line, the non-inverting input terminal, and the inverting input terminal. The selection switch is used to output the previous frame data voltage to the non-inverting input terminal and the next frame data voltage to the inverting input terminal in a time-division 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 via 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 later 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 driver chip is also 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.

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 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 in the later frame is greater than the data voltage corresponding to the target data in the previous frame, it outputs 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 further configured to, when the comparison result is that the data voltage corresponding to the target data in the next frame is less than or equal to the data voltage corresponding to the target data in the previous frame, not output the data difference to the display driving unit, and the display driving unit does not output the data voltage.

7. The display device according to claim 1, characterized in that, The storage sub-circuit in the first pixel circuit is a first storage sub-circuit. The first pixel circuit also includes a first driving sub-circuit. The first end of the first storage sub-circuit is electrically connected to the control end of the first driving sub-circuit, and the second end of the first storage sub-circuit is electrically connected to the first end of the first driving sub-circuit. The storage sub-circuit in the second pixel circuit is a second storage sub-circuit. The second pixel circuit also includes a second driving sub-circuit. The first end of the second storage sub-circuit is electrically connected to the control end of the second driving sub-circuit, and the second end of the second storage sub-circuit is electrically connected to the first end of the second driving sub-circuit. The transfer control circuit includes a first transfer circuit and a first control circuit. The first transfer circuit is electrically connected to a first terminal of the second storage sub-circuit, a second terminal of the second storage sub-circuit, and a first terminal of the first control circuit. The second terminal of the first control circuit is electrically connected to the first terminal of the first storage sub-circuit. The control terminal 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 terminal of the first storage sub-circuit, the second terminal of the first storage sub-circuit, and the first terminal of the second control circuit. The second terminal of the second control circuit is electrically connected to the first terminal of the second storage sub-circuit. The control terminal of the second control circuit is used to receive the second control signal.

8. The display device according to claim 7, characterized in that, The first transfer circuit includes a first operational amplifier, and the first control circuit includes a first control transistor. The non-inverting input terminal of the first operational amplifier is grounded, the inverting input terminal is electrically connected to the first terminal of the second storage sub-circuit and the first electrode of the first control transistor, the output terminal is electrically connected to the second terminal of the second storage sub-circuit, the second electrode of the first control transistor is 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 non-inverting input of the second operational amplifier is grounded, the inverting input is electrically connected to the first terminal of the first storage sub-circuit and the first electrode of the second control transistor, the output is electrically connected to the second terminal of the first storage sub-circuit, the second electrode of the second control transistor is electrically connected to the first terminal of the second storage sub-circuit, and the control electrode of the second control transistor is used to receive a second control signal.

9. The display device according to claim 1, characterized in that, The controller also includes a processing unit and a display driving unit; The processing unit is used to determine sliding information based on the sliding function if it detects a call to the sliding function when drawing each frame of the image. The display driving unit is electrically connected between the processing unit and the transfer control circuit. 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.

10. The display device according to claim 9, 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 to control the frequency of the output first control signal or the second control signal according to the sliding distance.

11. The display device according to any one of claims 2-6, characterized in that, The controller further includes a discharge control unit electrically connected to the storage sub-circuit, used to discharge the storage sub-circuit so that the amount of electricity stored in the storage sub-circuit corresponds to the voltage of the next frame of data or the target data of the next frame.

12. The display device according to claim 11, characterized in that, The discharge control unit includes a timing controller, a gate driving circuit, and a discharge circuit. The gate driving circuit is electrically connected between the timing controller and the discharge circuit, and the discharge circuit is electrically connected to the storage sub-circuit.

13. The display device according to any one of claims 6 and 9, 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 driver unit can be integrated into the application processor.

14. A display panel, characterized in that, include: Multiple pixel circuits and a transfer control circuit, wherein the multiple 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. The transfer control circuit is used to: transfer the power stored in the first pixel circuit to the second pixel circuit based on a first control signal when the power stored in the storage sub-circuit of the second pixel circuit is equal to the power stored in the storage sub-circuit of the first pixel circuit in the previous display stage; and transfer the power stored in the second pixel circuit to the first pixel circuit based on a second control signal when the power stored in the storage sub-circuit of the first pixel circuit is equal to the power stored in the storage sub-circuit of the second pixel circuit in the previous display stage.

15. The display panel according to claim 14, characterized in that, The storage sub-circuit in the first pixel circuit is a first storage sub-circuit. The first pixel circuit also includes a first driving sub-circuit. The first end of the first storage sub-circuit is electrically connected to the control end of the first driving sub-circuit, and the second end of the first storage sub-circuit is electrically connected to the first end of the first driving sub-circuit. The storage sub-circuit in the second pixel circuit is a second storage sub-circuit. The second pixel circuit also includes a second driving sub-circuit. The first end of the second storage sub-circuit is electrically connected to the control end of the second driving sub-circuit, and the second end of the second storage sub-circuit is electrically connected to the first end of the second driving sub-circuit. The transfer control circuit includes a first transfer circuit and a first control circuit. The first transfer circuit is electrically connected to a first terminal of the second storage sub-circuit, a second terminal of the second storage sub-circuit, and a first terminal of the first control circuit. The second terminal of the first control circuit is electrically connected to the first terminal of the first storage sub-circuit. The control terminal 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 terminal of the first storage sub-circuit, the second terminal of the first storage sub-circuit, and the first terminal of the second control circuit. The second terminal of the second control circuit is electrically connected to the first terminal of the second storage sub-circuit. The control terminal of the second control circuit is used to receive the second control signal.

16. The display panel according to claim 15, characterized in that, The first transfer circuit includes a first operational amplifier, and the first control circuit includes a first control transistor. The non-inverting input terminal of the first operational amplifier is grounded, the inverting input terminal is electrically connected to the first terminal of the second storage sub-circuit and the first electrode of the first control transistor, the output terminal is electrically connected to the second terminal of the second storage sub-circuit, the second electrode of the first control transistor is 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 non-inverting input of the second operational amplifier is grounded, the inverting input is electrically connected to the first terminal of the first storage sub-circuit and the first electrode of the second control transistor, the output is electrically connected to the second terminal of the first storage sub-circuit, the second electrode of the second control transistor is electrically connected to the first terminal of the second storage sub-circuit, and the control electrode of the second control transistor is used to receive a second control signal.

17. The display panel according to any one of claims 14-16, characterized in that, The display panel further 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 voltage of two adjacent frames of data transmitted by the data voltage line, and when the comparison result is that the voltage of the later frame of data is greater than the voltage of the previous frame of data, output the difference between the voltages of the two adjacent frames of data to the pixel circuit. The voltage comparator is also used 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.

18. The display panel according to claim 17, characterized in that, The voltage comparator includes a non-inverting input, an inverting input, and an output. The non-inverting input is electrically connected to one data voltage line, the inverting input is electrically connected to another data voltage line, and the output is electrically connected to the pixel circuit. 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.

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

Images