Electronic device for changing mode of display

Abstract

This electronic device may comprise a display including a display panel and display driving integrated circuitry (IC). The display driver IC may be configured to display an image on the display panel according to a first refresh rate higher than a reference refresh rate, on the basis of a first clock frequency in a first mode of the display. The display driver IC may be configured to gradually change the first refresh rate to a second refresh rate lower than the reference refresh rate and gradually change the first clock frequency to a second clock frequency lower than the first clock frequency in order to change the mode of the display from the first mode of the display to a second mode of the display for lower power consumption than the first mode of the display. The gradual change from the first refresh rate to the second refresh rate and the gradual change from the first clock frequency to the second clock frequency may be synchronized with each other.

Description

An electronic device for changing the display mode

[0001] The descriptions below are about electronic devices for changing the mode of the display.

[0002] A display may be used to display an image. The display may include a display panel and a display driving circuit. The display driving circuit may be configured to display the image acquired from a processor of the electronic device on the display panel. For example, the display driving circuit may be configured to control a source driver (or data driver) of the electronic device and a gate driver (or scan driver) of the electronic device to display the image on the display panel.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.

[0004] A display is described. The display may include a display driver integrated circuit (IC) and a display panel. The display driver IC may be configured to display an image on the display panel at a first refresh rate higher than a reference refresh rate based on a first clock frequency within a first mode of the display. The display driver IC may be configured to gradually change the first refresh rate to a second refresh rate lower than the reference refresh rate and to gradually change the first clock frequency to a second clock frequency lower than the first clock frequency, so as to change the mode of the display from the first mode of the display to a second mode of the display for lower power consumption than the first mode of the display. The gradual change from the first refresh rate to the second refresh rate and the gradual change from the first clock frequency to the second clock frequency may be synchronized with each other.

[0005] The display may include a display driving integrated circuit (IC) and a display panel. The display driving IC may be configured to display an image on the display panel at a first refresh rate higher than a reference refresh rate, based on a first clock frequency, within a first mode of the display. The display driving IC may be configured to gradually change the first refresh rate to a second refresh rate lower than the reference refresh rate by gradually changing the first clock frequency to a second clock frequency lower than the first clock frequency, so as to change the mode of the display from the first mode of the display to a second mode of the display for lower power consumption than the first mode of the display.

[0006] The display may be incorporated into an electronic device. For example, the electronic device may be described as a portable device, a multi-function device, or a mobile device. For example, the electronic device may include at least one processor (e.g., including a processing circuit) and a memory that stores instructions and includes one or more storage media. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to generate an image to be displayed on the display panel and provide the generated image to the display driver IC.

[0007] FIG. 1A illustrates an example of a method for changing first parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0008] Figure 1b shows examples of voltage parameters among the first parameters.

[0009] Figure 1c illustrates an example of a method for changing second parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0010] Figure 2a illustrates an example of a simplified block diagram of an electronic device.

[0011] Figure 2b illustrates an example of a subpixel within a display panel.

[0012] FIG. 3 illustrates an example of a method for gradually changing some of the first parameters and maintaining some of the other parameters to change the display mode from a first mode to a second mode for low power consumption.

[0013] FIG. 4 illustrates an example of a method for gradually changing some of the second parameters while maintaining some of the other parameters to change the display mode from the first mode to the second mode for low power consumption.

[0014] Figure 5 illustrates an example of a method for gradually changing first parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0015] Figure 6 illustrates another example of a method for gradually changing the first parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0016] FIG. 7A illustrates an example of a method for gradually changing some of the first parameters while maintaining some of the other parameters to change the display mode from a second mode for low power consumption to a first mode.

[0017] FIG. 7b illustrates an example of a timing diagram showing a case where the mode of the display changes from a first mode to a second mode and a case where the mode of the display changes from a second mode to a first mode.

[0018] Figures 8a to 8c illustrate examples of events that generate a command to change the display from a first mode to a second mode for low power consumption.

[0019] FIG. 9 is a block diagram of an electronic device within a network environment according to various embodiments.

[0020] FIG. 10 is a block diagram of a display module according to various embodiments.

[0021] The terms used in this disclosure are merely used to describe specific embodiments and may not be intended to limit the scope of the embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by those of ordinary skill in the art described in this disclosure. Terms defined in general dictionaries among the terms used in this disclosure may be interpreted as having the same or similar meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined in this disclosure. In some cases, even if a term is defined in this disclosure, it cannot be interpreted to exclude embodiments of the present disclosure.

[0022] The various embodiments of the present disclosure described below illustrate a hardware-based approach as an example. However, since the various embodiments of the present disclosure include techniques utilizing both hardware and software, the various embodiments of the present disclosure do not exclude a software-based approach.

[0023] In addition, in the present disclosure, expressions such as "more than" or "less than" may be used to determine whether a specific condition is satisfied or fulfilled. However, this is merely a description for expressing an example and does not exclude descriptions such as "more than" or "less than." Conditions described as "more than" may be replaced with "more than," conditions described as "less than," and conditions described as "more than and less than" may be replaced with "more than and less than." In addition, hereinafter, "A" to "B" mean at least one of the elements from A (including A) to B (including B).

[0024] An electronic device according to the present disclosure may include a display. For example, the display may include at least a portion of the display module (960) of FIG. 9 or correspond to at least a portion of the display module (960) of FIG. 9. For example, the display may be described as a display module or a display device. For example, the display may be included in the electronic device. For example, the electronic device including the display may include at least a portion of the electronic device (901) of FIG. 9 or correspond to at least a portion of the electronic device (901) of FIG. 9. Alternatively, for example, the electronic device including the display may include an electronic device (902) connected to the electronic device (901) of FIG. 9.

[0025] For example, an electronic device according to the present disclosure may be implemented in various form factors. For example, the electronic device may include an electronic device including the display of the bar type. However, the present disclosure is not limited thereto. For example, the electronic device may include an electronic device including the display of the flexible display. For example, the flexible display may include a rollable display, a foldable display, or a multi-foldable display. For example, the electronic device may include a wearable device in the shape of a watch. Furthermore, for example, the electronic device may include a head mounted display (HMD).

[0026] For example, an electronic device according to the present disclosure may include at least one processor (e.g., including a processing circuit) (e.g., including a central processing unit (CPU), a graphic processing unit (GPU), and a display processing unit (DPU)). For example, the at least one processor may include at least a portion of, or correspond to at least a portion of, the processor 920 of FIG. 9. For example, the electronic device may include a memory that includes one or more storage media and stores instructions. The memory may include at least a portion of, or correspond to at least a portion of, the memory 930 of FIG. 9. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to generate or acquire an image to be displayed through the display. The above instructions, when executed individually or collectively by at least one processor, may provide data for the image to the display (or the display driver IC (DDI) (1030), the display driving IC (1030) of FIG. 10) to display the image through the display. As a non-limiting example, at least some of the components included in the electronic device according to the present disclosure are described and illustrated with reference to FIG. 2A below.

[0027] The display may include a display driving IC and a display panel. The display driving IC may be referred to as a display driving circuit, a control circuit, or a DDI. For example, the display driving IC may include at least a portion of the DDI (1030) of FIG. 10 or correspond to at least a portion of the DDI (1030) of FIG. 10. For example, the display panel may include at least a portion of the display panel (1010) of FIG. 10 or correspond to at least a portion of the display panel (1010) of FIG. 10. For example, the display driving IC may be used to display an image (e.g., an image provided from the at least one processor) on the display panel.

[0028] For example, the display panel may include pixels. Each of the pixels may include sub-pixels. The sub-pixels may include a first sub-pixel configured to emit light of a first color (e.g., red), a second sub-pixel configured to emit light of a second color (e.g., blue), and a third sub-pixel configured to emit light of a third color (e.g., green). As a non-limiting example, the sub-pixels may further include a fourth sub-pixel configured to emit light of a fourth color (e.g., white).

[0029] For example, each of the sub-pixels may include a light-emitting element (e.g., an organic light-emitting diode (OLED)) and a transistor (or a driving transistor (e.g., the first transistor (251) of FIG. 2B) for providing current to the light-emitting element (or obtaining current provided to the light-emitting element). For example, each of the sub-pixels may include an operation control transistor (e.g., the fifth transistor (255) of FIG. 2B) including a drain electrode electrically connected to a source electrode of the driving transistor and a source electrode electrically connected to a driving voltage line for transmitting a driving voltage (VDD). For example, each of the sub-pixels may include an emission control transistor (e.g., the sixth transistor (256) of FIG. 2B) including a source electrode electrically connected to a drain electrode of the driving transistor and a drain electrode electrically connected to an anode electrode of the light-emitting element. For example, the display driving IC may provide an emission signal to each of the gate electrodes of the operation control transistor and the gate electrode of the emission control transistor. When the above light-emitting signal is provided to each of the gate electrode of the operation control transistor and the gate electrode of the light-emitting control transistor, the current obtained through the driving transistor can be provided to the light-emitting element. For example, the light-emitting element can emit light according to the current.

[0030] As a non-limiting example, each of the sub-pixels may further include, in addition to the driving transistor, the operation control transistor, and the light emission control transistor exemplified above, one or more other transistors and one or more capacitors. An example configuration of each of the sub-pixels is described and illustrated with reference to FIG. 2b below.

[0031] In the present disclosure, the display can be driven within a plurality of modes of the display. For example, the display can be driven within a first mode among the plurality of modes. For example, the first mode may represent a mode in which the refresh rate of the display panel of the display is equal to or greater than a reference refresh rate. As a non-limiting example, the reference refresh rate may be 60 Hz (Herts). For example, the first mode may be distinguished as a normal speed (NS) mode or a high speed (HS) mode. For example, the NS mode of the first mode may be such that the refresh rate of the display panel is equal to or greater than the reference refresh rate, and the clock frequency of the display driving IC of the display may be a first clock frequency (e.g., 60 Hz). For example, the HS mode of the first mode may be such that the refresh rate of the display panel is equal to or greater than the reference refresh rate, and the clock frequency of the display driving IC of the display may be a second clock frequency (e.g., 120 Hz) higher than the first clock frequency. For example, the first mode may be referred to as normal mode, NM (normal mode), or normal display mode.

[0032] For example, the display may be driven in a second mode for lower power consumption than the first mode among the plurality of modes. For example, the second mode may indicate a mode in which the refresh rate of the display panel of the display is less than (or equal to) a reference refresh rate. In this case, the second mode may lower the clock frequency of the display driving IC of the display in order to lower the refresh rate of the display panel to less than the reference refresh rate. In other words, in the second mode, the display may lower the clock frequency of the display driving IC, thereby lowering the refresh rate of the display panel. For example, the second mode may display an image on the display panel at a relatively lower refresh rate in order to lower power consumption than the first mode. For example, the second mode may be referred to as a low power mode (LPM), a low power mode, or a low power display mode. As a non-limiting example, the display may display an always on display (AOD) screen in the second mode. Additionally, as a non-limiting example, the display may display a still image within the second mode. In one example, the still image may be referred to as an image that is relatively unchanged (or not updated). Additionally, as a non-limiting example, the display may enter the second mode from the first mode when no user input is obtained for the display. In one example, the case where no input is obtained may include a case where a reference time has expired from the time (or timing) at which the user input to the display ended. Examples of the second mode, as described above, are described below in FIGS. 8A to 8C .

[0033] FIG. 1A illustrates an example of a method for changing first parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0034] FIG. 1A illustrates an example (100) of a method for changing first parameters to change the mode of the display from the first mode to the second mode for low power consumption. For example, the display driving IC may display an image on the display panel of the display according to a first refresh rate (120-1) based on a first clock frequency (110-1) within the first mode of the display. For example, a plurality of voltages may be used to display the image on the display panel within the first mode. For example, in order to display the image on the display panel within the first mode, VLIN (131) having a voltage level (131-1), VLOUT (132) having a voltage level (132-1), VGH (133) having a voltage level (133-1), VGL (134) having a voltage level (134-1), VDD (135) having a voltage level (135-1), VSS (136) having a voltage level (136-1), VINT (137) having a voltage level (137-1), and VAINT (138) having a voltage level (138-1) may be used.

[0035] Referring to example (100), the electronic device (or the display driving IC) may change the state (or level, value) of each of the first parameters in order to change the mode of the display from the first mode to the second mode. For example, the electronic device (or the display driving IC) may change the state of all of the first parameters in order to change the mode of the display from the first mode to the second mode at timing (105) (or time, point in time).

[0036] For example, the first parameters that are changed to change the mode of the display from the first mode to the second mode for low power consumption may include driving parameters and voltage parameters.

[0037] For example, the driving parameters of the first parameters may include a clock frequency (110) of the display driving IC of the display. For example, the clock frequency (110) may be referred to as a clock rate or a driving frequency. For example, the driving parameters of the first parameters may include a refresh rate (120) of the display panel of the display. The refresh rate (120) may indicate the number of times an image is updated through the display panel. For example, the refresh rate (120) may be referred to as a panel frequency or a panel driving frequency.

[0038] For example, the voltage parameters of the first parameters may include VLIN (131), VLOUT (132), VGH (133), VGL (134), VDD (135), VSS (136), VINT (137), and VAINT (138). Specific details regarding the voltage parameters of the first parameters may be described in more detail through the example of Fig. 1b.

[0039] Figure 1b shows examples of voltage parameters among the first parameters.

[0040] FIG. 1B illustrates examples of the voltage parameters among the first parameters. Referring to FIG. 1B, the electronic device (140) may include the display. For example, the display may include a display driving IC (150) and a display panel (160). Referring to FIG. 1B, the electronic device (140) may include a power management integrated circuit (PMIC) (170) connected to each of the display driving IC (150) and the display panel (160). As a non-limiting example, the display driving IC (150) may include a timing generation block (151) and a voltage generation block (152). For example, the timing generation block (151) may generate a clock signal used in the display driving IC (150). At this time, the frequency of the clock signal may be referred to as a clock frequency. Each of the timing generation block (151) and the voltage generation block (152) may be composed of a hardware component (e.g., a circuit), a software component, or a combination of hardware and software components.

[0041] Referring to FIG. 1B, the display driver IC (150) can obtain power for displaying an image on the display panel (160) from the PMIC (170) within the power on-off sequence of the display. For example, the display driver IC (150) can transmit a first control signal (171) (e.g., ELON1) to the PMIC (170) to request a voltage required for displaying an image on the display panel (160). For example, the first control signal (171) can be used to wake up the display panel (160) from a sleep state within the power on-off sequence. For example, the PMIC (170) can provide the VLIN (131) to the display driver IC (150) in response to the first control signal (171). For example, VLIN (131) may be a power source used to generate voltages having a positive voltage level. For example, VLIN (131) may be referred to as a positive basis voltage, or a first basis voltage.

[0042] For example, the display driver IC (150) can generate the voltage parameters using the power generation block (152) based on the VLIN (131) obtained from the PMIC (170). For example, VLOUT (132) can be generated by converting the sum of VLIN (131) and another supply voltage (e.g., VCI) into a negative voltage. VLOUT (132) can have a negative voltage level determined according to VLIN (131). For example, VLOUT (132) can be a power source used to generate voltages having a negative voltage level. For example, VLOUT (132) can be referred to as a negative base voltage, or a second base voltage.

[0043] For example, the display driver IC (150) can generate voltages for driving a gate driver circuit (not shown) using the voltage generation block (152). For example, the display driver IC (150) can generate VGH (133) using the voltage generation block (152) based on VLIN (131). For example, the display driver IC (150) can generate VGL (134) using the voltage generation block (152) based on VLOUT (132). For example, VGH (133) and VGL (134) can be voltages for driving the gate driver circuit. For example, VGH (133) can have a positive voltage level, and VGL (134) can have a negative voltage level. For example, VGH (133) can be referred to as a first driving voltage, a first gate driving voltage, or a first gate driver driving voltage. For example, VGL (134) may be referred to as a second driving voltage, a second gate driving voltage, or a second gate driver driving voltage.

[0044] For example, the display driver IC (150) may transmit a first control signal (171) to the PMIC (170) and then transmit a second control signal (172) (ELON2) to the PMIC (170) within the power on-off sequence of the display. For example, the second control signal (172) may be used to actually display an image on the display panel (160). For example, the display driver IC (150) may cause the PMIC (170) to provide voltages to the display panel (160) based on transmitting the second control signal (172) to the PMIC (170). For example, the PMIC (170) may provide VDD (135) and VSS (136) to the display panel (160) in response to the second control signal (172). For example, each of VDD (135) and VSS (136) may be a voltage for driving each of the sub-pixels of the display panel (160). For example, VDD (135) may be a voltage having a positive voltage level for driving each of the sub-pixels. For example, VSS (136) may be a voltage having a negative voltage level for driving each of the sub-pixels. For example, VDD (135) may be referred to as a third driving voltage. For example, VSS (136) may be referred to as a fourth driving voltage.

[0045] For example, the display driving IC (150) can generate voltages for initializing the transistor and light-emitting element of each sub-pixel of the display panel (160) using the voltage generation block (152). For example, the display driving IC (150) can generate VINT (137) using the voltage generation block (152) based on VLOUT (132). For example, the display driving IC (150) can generate VAINT (138) using the voltage generation block (152) based on VLOUT (132). For example, VINT (137) can be used to initialize the gate electrode of the transistor (or driving transistor) of each sub-pixel. For example, VAINT (138) can be used to initialize the anode electrode of the light-emitting element of each sub-pixel. For example, VINT (137) and VAINT (138) can have negative voltage levels. For example, VINT (137) may be referenced as a first initialization voltage. For example, VAINT (138) may be referenced as a second initialization voltage.

[0046] The voltage parameters provided to the display panel (160) may be used to display an image on the display panel (160). For example, the image may be expressed by a data voltage (155). For example, the data voltage (155) may be applied to each of the sub-pixels of the display panel (160). For example, the data voltage (155) may have a voltage level determined based on a gamma value in order to have a grayscale and luminance that can be seen from the outside. For example, the gamma value may be indicated by a command received from at least one processor connected to the display driving IC (150).

[0047] Referring again to example (100) of FIG. 1A, the display driving IC can change the first parameters to change the mode of the display from the first mode to the second mode.

[0048] For example, the display driving IC can change the clock frequency (110) from the first clock frequency (110-1) to the second clock frequency (110-2) in order to change the mode of the display from the first mode to the second mode. For example, the second clock frequency (110-2) can be lower than the first clock frequency (110-1). For example, the display driving IC can change (or lower) the first clock frequency (110-1) to the second clock frequency (110-2) at the timing (105) in order to change the mode of the display from the first mode to the second mode.

[0049] For example, the display driving IC can change the refresh rate (120) from the first refresh rate (120-1) to the second refresh rate (120-2) in order to change the mode of the display from the first mode to the second mode. For example, the second refresh rate (120-2) can be lower than the first refresh rate (120-1). For example, the display driving IC can change (or lower) the refresh rate from the first refresh rate (120-1) to the second refresh rate (120-2) at the timing (105) in order to change the mode of the display from the first mode to the second mode.

[0050] For example, the refresh rate (120) can be synchronized with the clock frequency (110) of the display driving IC. For example, the refresh rate (120) of the display panel is determined by the clock frequency (110), and when the clock frequency (110) is changed from the first clock frequency (110-1) to the second clock frequency (110-2) at the timing (105), the refresh rate (120) can be changed from the first refresh rate (120-1) to the second refresh rate (120-2).

[0051] For example, the display driving IC can change the voltage level of VLIN (131) (or positive base voltage, first base voltage) from voltage level (131-1) to voltage level (131-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (131-2) can have a lower voltage level than the voltage level (131-1). For example, the display driving IC can change (or lower) the voltage level of VLIN (131) from voltage level (131-1) to voltage level (131-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0052] For example, the display driving IC can change the voltage level of VLOUT (132) (or negative base voltage, second base voltage) from voltage level (132-1) to voltage level (132-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (132-2) can have a higher voltage level than the voltage level (132-1). For example, the display driving IC can change (or increase) the voltage level of VLOUT (132) from voltage level (132-1) to voltage level (132-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0053] For example, the display driving IC can change the voltage level of VGH (133) (or first driving voltage) from voltage level (133-1) to voltage level (133-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (133-2) can have a lower voltage level than the voltage level (133-1). For example, the display driving IC can change (or lower) the voltage level of VGH (133) from voltage level (133-1) to voltage level (133-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0054] For example, the display driving IC can change the voltage level of VGL (134) (or second driving voltage) from voltage level (134-1) to voltage level (134-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (134-2) can have a higher voltage level than the voltage level (134-1). For example, the display driving IC can change (or increase) the voltage level of VGL (134) from voltage level (134-1) to voltage level (134-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0055] For example, the display driving IC can change the voltage level of VDD (135) (or the third driving voltage) from voltage level (135-1) to voltage level (135-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (135-2) can have a lower voltage level than the voltage level (135-1). For example, the display driving IC can change (or lower) the voltage level of VDD (135) from voltage level (135-1) to voltage level (135-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0056] For example, the display driving IC can change the voltage level of VSS (136) (or second driving voltage) from voltage level (136-1) to voltage level (136-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (136-2) can have a higher voltage level than the voltage level (136-1). For example, the display driving IC can change (or increase) the voltage level of VSS (136) from voltage level (136-1) to voltage level (136-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0057] For example, the display driving IC can change the voltage level of VINT (137) (or the first initialization voltage) from voltage level (137-1) to voltage level (137-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (137-2) can have a higher voltage level than the voltage level (137-1). For example, the display driving IC can change (or increase) the voltage level of VINT (137) from voltage level (137-1) to voltage level (137-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0058] For example, the display driving IC can change the voltage level of VAINT (138) (or second initialization voltage) from voltage level (138-1) to voltage level (138-2) in order to change the mode of the display from the first mode to the second mode. For example, the voltage level (138-2) can have a higher voltage level than the voltage level (138-1). For example, the display driving IC can change (or increase) the voltage level of VAINT (138) from voltage level (138-1) to voltage level (138-2) at timing (105) in order to change the mode of the display from the first mode to the second mode.

[0059] For example, the display driving IC may display an image on the display panel of the display at a second refresh rate (120-2) based on a second clock frequency (110-2) within the second mode of the display. For example, a plurality of voltages may be used to display the image on the display panel within the second mode. For example, in order to display the image on the display panel within the second mode, VLIN (131) having a voltage level (131-2), VLOUT (132) having a voltage level (132-2), VGH (133) having a voltage level (133-2), VGL (134) having a voltage level (134-2), VDD (135) having a voltage level (135-2), VSS (136) having a voltage level (136-2), VINT (137) having a voltage level (137-2), and VAINT (138) having a voltage level (138-2) may be used.

[0060] In example (100), increasing the voltage level of each of the voltages having a negative voltage level (e.g., VLOUT (132), VGL (134), VSS (136), VINT (137), VAINT (138)) may indicate a change to a voltage level with a smaller absolute value. In addition, decreasing the voltage level of each of the voltages having a positive voltage level (e.g., VLIN (131), VGH (133), VDD (135)) may indicate a change to a voltage level with a smaller absolute value. Accordingly, the power consumption of the display may be reduced in the second mode.

[0061] In FIG. 1A, an example is shown in which the first parameters are changed at exactly the same timing (105) to change the mode of the display from the first mode to the second mode, but the present disclosure is not limited thereto. For example, all of the first parameters may be changed at substantially the same timing to change the mode of the display from the first mode to the second mode.

[0062] As described above, in order to change the mode of the display from the first mode to the second mode for low power consumption, the display driving IC may change all of the first parameters at substantially the same time (e.g., timing (105)). By changing all of the first parameters at the same time, flickering may be noticeable while displaying an image on the display panel. In other words, a seamless transition may not be possible when switching the mode of the display from the first mode to the second mode. In addition, the image quality of the image displayed on the display panel in the second mode for low power consumption may be lower than the image quality of the image displayed on the display panel in the first mode.

[0063] In FIGS. 1A and 1B, the first parameters related to driving the display and displaying an image to be displayed on the display panel are described in order to change the mode of the display from the first mode to the second mode, in which case the second parameters related to the luminance of the display panel may be changed in order to change the mode of the display from the first mode to the second mode. For specific details related thereto, reference may be made to FIG. 1C below.

[0064] Figure 1c illustrates an example of a method for changing second parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0065] FIG. 1C illustrates an example (180) of a method for changing second parameters to change the mode of the display from the first mode to the second mode for low power consumption. For example, the display driving IC may display an image on the display panel of the display such that, within the first mode of the display, a luminance is recognized based on a first brightness value (181-1), a first duty (182-1), and a first gamma value (183-1).

[0066] Referring to example (180), the electronic device (or the display driving IC) may change the state (or level, value) of each of the second parameters in order to change the mode of the display from the first mode to the second mode. For example, the electronic device (or the display driving IC) may change the state of all of the first parameters in order to change the mode of the display from the first mode to the second mode at timing (105) (or time, point in time).

[0067] For example, the second parameters that are changed to change the mode of the display from the first mode to the second mode for low power consumption may include a display brightness value (DBV) (181), an active-matrix organic light-emitting diode (AMOLED) off-duty ratio (AOR) (182), and a gamma value (183).

[0068] For example, DBV (181) may be used to control the luminance (or brightness) of the display panel. For example, DBV (181) may include a value for indicating a specific luminance. For example, DBV (181) for indicating the specific luminance may have different values ​​depending on the mode of the display.

[0069] For example, the AOR (182) can be used to indicate a duty for which each light-emitting element of the sub-pixels of the display panel does not emit light (or is turned off). For example, the duty can represent a time length (or off-time) for varying the pulse width of a light-emitting signal (e.g., light-emitting signal (265) of FIG. 2B). Depending on the AOR (182), the luminance (or brightness) of the display panel can be controlled. For example, as the duty of the AOR (182) increases, the luminance of the display panel can decrease.

[0070] For example, the gamma value (183) may be used to determine a data voltage for representing a specific grayscale and a specific luminance for each of the sub-pixels of the display panel. For example, as the gamma value (183) changes, the data voltage for representing the same grayscale and luminance may change. For example, as the gamma value (183) changes, the brightness (or luminance) of the display panel may differ even if the same data voltage is applied.

[0071] For example, the display driving IC may change the DBV (181) from a first brightness value (181-1) to a second brightness value (181-2) in order to change the mode of the display from the first mode to the second mode. For example, the second brightness value (181-2) and the first brightness value (181-1) may have the same luminance (e.g., 60 nit) of the display panel as viewed from the outside. For example, the display driving IC may change the DBV (181-2) from a first brightness value (181-1) to a second brightness value (181-2) at a timing (105) in order to change the mode of the display from the first mode to the second mode.

[0072] Referring to example (180) of FIG. 1C, for example, the first brightness value (181-1) may be a value (e.g., "00F6") for indicating 60 nit. For example, the second brightness value (181-2) may be a value (e.g., "0FFF") for indicating 60 nit. At this time, "OFFF" may represent the maximum brightness (e.g., 2500 nit) of the display panel when used in the first mode. As described above, different DBVs (181) may be used to display the same brightness in the first mode and the second mode. At this time, the timing (e.g., timing (105)) for switching the mode of the display and the timing at which a command for changing the DBV (181) is received (or the timing at which the DBV (181) is changed) may not be synchronized. By asynchronously, flickering may be perceived on the display panel as the first brightness value (181-1) (e.g., "00F6") is used within the second mode, or as the second brightness value (181-2) (e.g., "0FFF") is used within the first mode.

[0073] For example, the display driving IC can change the AOR (182) from the first duty (182-1) to the second duty (182-2) in order to change the mode of the display from the first mode to the second mode. For example, the second duty (182-2) and the first duty (182-1) may have the same luminance (e.g., 60 nit) of the display panel as viewed from the outside. For example, the display driving IC can change the AOR (182-1) from the first duty (182-2) to the second duty (182-2) at the timing (105) in order to change the mode of the display from the first mode to the second mode.

[0074] Referring to example (180) of FIG. 1C, for example, the first duty (182-1) may be a duty (e.g., 38%) to indicate 60 nits. For example, the second duty (181-2) may be a duty (e.g., 16%) to indicate 60 nits. The 16% may indicate the maximum brightness (e.g., 2500 nits) of the display panel when used in the first mode. As described above, different AORs (182) may be used to display the same brightness in the first mode and the second mode. In this case, the timing (e.g., timing (105)) for switching the mode of the display and the timing at which a command for changing the AOR (182) is received (or the timing at which the AOR (182) is changed) may not be synchronized. By asynchronously, flickering may be observed on the display panel as the first duty (182-1) (e.g., 38%) is used within the second mode, or as the second duty (182-2) (e.g., 16%) is used within the first mode.

[0075] For example, the display driving IC may change the gamma value (183) from a first gamma value (183-1) to a second gamma value (183-2) in order to change the mode of the display from the first mode to the second mode. The second gamma value (183-2) may be a different value from the first gamma value (183-1). In the example, the luminance (e.g., 60 nit) of the display panel as viewed externally based on the different second gamma values ​​(181-2) and the first gamma value (181-1) may be the same. For example, the display driving IC may change the mode of the display from the first mode to the second mode at a timing (105).

[0076] As described in FIG. 1A, in order to change from the first mode to the second mode, the charging time of each transistor of the sub-pixels of the display panel may be changed as the first parameters are changed. Accordingly, the data voltage required according to the mode of the display may be changed. In other words, the gamma value (183) needs to be changed according to the mode. The timing for switching the mode of the display (e.g., timing (105)) and the timing at which a command for changing the gamma value (183) is received (or the timing at which the gamma value (183) is changed) may not be synchronized. Due to the asynchrony, flickering may be recognized on the display panel as the first gamma value (183-1) is used in the second mode or the second gamma value (183-2) is used in the first mode.

[0077] Although FIGS. 1A and 1C illustrate examples in which the electronic device (or the display driving IC) changes the first parameters and the second parameters in order to change the mode of the display from the first mode to the second mode, the present disclosure is not limited thereto. For example, the description of FIGS. 1A and 1C can also be substantially applied to a case in which the electronic device (or the display driving IC) changes the first parameters and the second parameters in order to change the mode of the display from the first mode to the second mode. For example, the electronic device (or the display driving IC) can change the clock frequency (110) from the second clock frequency (110-2) to the first clock frequency (110-1) at a different timing in order to change the mode of the display from the second mode to the first mode.

[0078] Referring to FIGS. 1A to 1C, the electronic device (or the display driving IC) may change the first parameters and the second parameters in order to change the mode of the display from the first mode to the second mode. However, since both the first parameters and the second parameters are changed at the same time (e.g., timing (105)) in order to change from the first mode to the second mode, flickering may be recognized on the display panel.

[0079] Hereinafter, the electronic device according to the present disclosure may gradually change at least some of the first parameters and the second parameters over (or within) a longer time period than the timing (e.g., timing (105)) to reduce flickering that may be visible on the display panel when changing (or switching, controlling) the mode of the display. In addition, the electronic device according to the present disclosure may refrain from changing (or maintain, cease, stop, pause, skip, bypass, prevent, not change) at least some of the first parameters and the second parameters. Accordingly, the electronic device according to the present disclosure may reduce flickering that occurs on the display panel and smoothly perform switching of the mode of the display.

[0080] Figure 2a illustrates an example of a simplified block diagram of an electronic device.

[0081] Referring to FIG. 2A, the electronic device (200) may include a processor (220), a display driving IC (230), and a display panel (210). The display driving IC (230) (e.g., the display driving IC (150) of FIG. 1B) may be referred to as a DDI, a display driving circuit, or a control circuit. For example, the electronic device (200) may be an example of the electronic device (901) of FIG. 9.

[0082] For example, the display panel (210) and the display driving IC (230) may be referred to as a display (205). For example, the display (205) may include at least a portion of the display module (960) of FIG. 9. For example, the display (205) may be referred to as a display device or a display module.

[0083] For example, the display panel (210) (e.g., the display panel (160) of FIG. 1B) may include sub-pixels. For an example of each sub-pixel of the display panel (210), reference may be made to FIG. 2B below.

[0084] For example, the processor (220) may be used to acquire an image. For example, the processor (220) may provide the image to the display driving IC (230). For example, the processor (220) may provide at least one command related to displaying the image to the display driving IC (230). For example, the processor (220) may include at least a part of the processor (920) of FIG. 9.

[0085] For example, the at least one command may include a command instructing a change in each of the first parameters and the second parameters. For example, the at least one command may include a command instructing a change in clock frequency (110). For example, the at least one command may include a command instructing a change in refresh rate (120). For example, the at least one command may include a command instructing a change in VLIN (131). For example, the at least one command may include a command instructing a change in VGH (133). For example, the at least one command may include a command instructing a change in DBV (181). For example, the at least one command may include a command instructing a change in AOR (182). For example, the at least one command may include a command instructing a change in gamma value (183).

[0086] For example, the at least one command may include a command that instructs a change in the mode of the display (205). For example, the command that instructs a change in the mode of the display (205) may instruct the mode to be changed from the first mode to the second mode. Alternatively, for example, the command that instructs a change in the mode of the display (205) may instruct the mode to be changed from the second mode to the first mode.

[0087] For example, the processor (220) may include a central processing unit (CPU), a graphics processing unit (GPU), or a display controller (or display processing unit (DPU)) configured to process an image obtained from a volatile memory into a format suitable for the display panel (210). For example, the processor (220) may be operatively or operably coupled with a display driver IC (230). For example, operatively coupling the processor (220) with the display driver IC (230) may indicate that the processor (220) is directly connected to the display driver IC (230). For example, operatively coupling the processor (220) with the display driver IC (230) may indicate that the processor (220) is connected to the display driver IC (230) through another component of the electronic device (200). For example, the processor (220) may be connected to the display driver IC (230) via an interface (225). For example, the interface (225) may be used to transmit an image from the processor (220) to the display driver IC (230). For example, the interface (225) may be a display serial interface (DSI) of the mobile industry process interface (MIPI) alliance. However, the embodiments of the present disclosure are not limited thereto. For example, the fact that the processor (220) is operatively coupled with the display driver IC (230) may indicate that the display driver IC (230) operates based on instructions executed by the processor (220). For example, the fact that the processor (220) is operatively coupled with the display driver IC (230) may indicate that the display driver IC (230) is controlled by the processor (220).For example, the processor (220) can display an image on the display panel (210) using the display driving IC (230) based on the video mode of the DSI.

[0088] Additionally, the processor (220) may include at least one processor. For example, the at least one processor may be an example of the processor (920) of FIG. 9. For example, the processor (220) may include various processing circuits and / or multiple processors. For example, the term "processor" as used herein, including in the claims, may include various processing circuits including at least one processor, and one or more of the at least one processors may be configured to perform the various functions described below individually or collectively in a distributed manner. As used herein, when "processor," "at least one processor," and "one or more processors" are described as being configured to perform various functions, these terms encompass, for example, and without limitation, situations where one processor performs some of the recited functions and other processor(s) perform other parts of the recited functions, as well as situations where one processor can perform all of the recited functions. Additionally, the at least one processor may comprise a combination of processors that perform the various functions enumerated / disclosed, for example, in a distributed manner. The at least one processor may execute program instructions to achieve or perform the various functions.

[0089] For example, the display driver IC (230) can process the image based on the characteristics of the image and / or the characteristics of the display panel (210). For example, the display driver IC (230) can provide signals for displaying the image to the display panel (210). For example, the display driver IC (230) can include at least a portion of a DDI (e.g., the DDI (1030) of FIG. 10). For example, the display driver IC (230) can be operatively coupled with the display panel (210). For example, the display driver IC (230) being operatively coupled with the display panel (210) can indicate that the display driver IC (230) is connected to the display panel (210). For example, the display driver IC (230) being operatively coupled with the display panel (210) can indicate that the display panel (210) is controlled by the display driver IC (230). However, it is not limited to this.

[0090] For example, the display driving IC (230) may include a first set (231) of circuits for processing the image obtained from the processor (220). For example, the first set (231) may be connected to the processor (220) among the processor (220) and the display panel (210). For example, the display driving IC (230) may include a second set (236) of circuits for obtaining the processed image from the first set (231) and providing signals for displaying the obtained image to the display panel (210). For example, the second set (236) may be connected to the display panel (210) among the processor (220) and the display panel (210). For example, the second set (236) may be used to initialize a gate (or gate electrode), apply the data voltage to the initialized gate, and cause the light-emitting diode to emit light. For example, the gate (or gate electrode) may represent a gate of a transistor associated with each of a plurality of sub-pixels included in the display panel (210). The light-emitting diode may represent a diode that emits light associated with each of the plurality of sub-pixels.

[0091] For example, the first set (231) may include an interface controller (232) connected to the processor (220) via an interface (225). For example, the interface controller (232) may be used to provide the image acquired from the processor (220) to an image processing circuit (233) or a graphic random access memory (GRAM) (234) and to provide a command acquired from the processor (220) to a command controller (not shown). For example, the interface controller (232) may be included in the interface module (1031) of FIG. 10.

[0092] For example, the first set (231) may include an image processing circuit (233). For example, the image processing circuit (233) may process the image from the processor (220) to adjust the resolution, brightness, and / or size of the image. For example, the processed image may be provided to the second set (236). For example, the image processing circuit (233) may be included in the image processing module (1035) of FIG. 10.

[0093] For example, the first set (231) may further include a GRAM (234) and a GRAM controller (235). For example, the GRAM (234) may be used to store or record the image acquired from the processor (220). For example, the GRAM controller (235) may be used to control the GRAM (234). The GRAM (234) and the GRAM controller (235) may be included in the memory (1033) of FIG. 10.

[0094] For example, the second set (236) may include a timing controller (237). For example, the timing controller (237) may be used to provide a synchronization signal (or timing signal) to the GRAM controller (235), the source driver circuit (238), the gate driver circuit (239), and / or the light emitting driver (not shown). For example, the synchronization signal may include a vertical synchronization signal (Vsync) and a horizontal synchronization signal (Hsync). For example, the synchronization signal may be generated by the timing controller (237) or may be generated by a synchronization signal generation circuit located outside the display driver IC (230). For example, the timing controller (237) may be used to provide signals for controlling the source driver circuit (238), the gate driver circuit (239), and / or the light emitting driver. For example, the timing controller (237) may further include at least one signal generation circuit (as exemplified in the descriptions below). For example, the at least one signal generation circuit within the second set (236) may be located outside the timing controller (237). For example, at least a portion of the second set (236) may be included in the mapping module (1037) of FIG. 10.

[0095] For example, the second set (236) may include a source driver circuit (238). For example, the source driver circuit (238) may be used to provide the data voltage to be applied to the gate. For example, the source driver circuit (238) may be used to provide the data voltage corresponding to a specific gradation within the gradation that the sub-pixels of the display panel (210) can implement. For example, depending on the magnitude of the data voltage, the gradation implemented by each of the sub-pixels may change. For example, the luminance of the image displayed according to the gradation may be adjusted based on a gamma value. For example, the gamma value may be indicated through a command obtained from the processor (220).

[0096] For example, the second set (236) may include a gate driver circuit (239). For example, the gate driver circuit (239) may be used to provide a gate voltage to the display panel (210). The gate voltage may include a voltage for driving (e.g., turning on / off) a transistor included in a sub-pixel. The gate driver circuit (239) may be referred to as a gate driver.

[0097] Although not illustrated in FIG. 2A, for example, the second set (236) may include a light-emitting driver circuit (or light-emitting driver). For example, the light-emitting driver circuit may be used to provide the light-emitting signal to the display panel (210). In one example, the light-emitting driver circuit may be included in the gate driver circuit (239).

[0098] In FIG. 2A, the gate driver circuit (239) is illustrated as being included in the display driving IC (230), but the present disclosure is not limited thereto. For example, the gate driver circuit (239) may be located outside the display driving IC (230).

[0099] Referring to FIG. 2A, the electronic device (200) may include a power management integrated circuit (PMIC) (240) (e.g., PMIC (170) of FIG. 1B). For example, the PMIC (240) may provide voltages to each of the display driver IC (230) and the display panel (210). For example, the PMIC (240) may provide a positive base voltage (e.g., VLIN (131) of FIG. 1A) to the display driver IC (230) based on receiving a first control signal from the display driver IC (230). For example, the PMIC (240) may provide a third driving voltage (e.g., VDD (135) of FIG. 1A) and a fourth driving voltage (e.g., VSS (136) of FIG. 1A) to the display panel (210) based on receiving a second control signal from the display driver IC (230).

[0100] Figure 2b illustrates an example of a subpixel within a display panel.

[0101] FIG. 2B illustrates an example of a circuit (or compensation circuit) of each of the sub-pixels within the display panel (210). The sub-pixels illustrated in FIG. 2B are merely for convenience of explanation, and the structure of the sub-pixels of the present disclosure is not limited to the example of FIG. 2B. For example, the structure of the sub-pixel may include fewer transistors (e.g., seven transistors) than eight transistors (251, 252, 253, 254, 255, 256, 257, 258), or may include more transistors (e.g., nine or ten transistors).

[0102] Referring to FIG. 2B, each of the plurality of sub-pixels may include a light-emitting element (250) (e.g., a light-emitting diode (250) or an OLED (250)), a first transistor (251) (e.g., the driving transistor, transistor), a second transistor (252) (e.g., a switching transistor), a third transistor (253) (e.g., a compensation transistor), a fourth transistor (254) (e.g., an initialization transistor), a fifth transistor (255) (e.g., the operation control transistor), a sixth transistor (256) (e.g., the light-emitting control transistor), a seventh transistor (257) (e.g., a bypass transistor), an eighth transistor (258) (e.g., a threshold voltage adjustment transistor), a capacitor (259) (e.g., a storage capacitor), and a capacitor (260) (e.g., a boost capacitor). The components, their relationships, and their functions within each of the plurality of sub-pixels illustrated in FIG. 2B are exemplary only and do not limit the implementations described or claimed herein. For example, the capacitor (260) may be omitted.

[0103] For example, the gate electrode (G) of the first transistor (251) may be connected to the drain electrode (D) of the third transistor (253). For example, the gate electrode (G) of the first transistor (251) may be connected to the drain electrode (D) of the fourth transistor (254). For example, the gate electrode of the first transistor (251) may be connected to a capacitor (259) used to store the data voltage (Vdata). For example, the gate electrode of the first transistor (251) may be connected to a capacitor (260) used to compensate for a voltage drop caused by stopping providing the fourth signal (264). For example, the source electrode of the first transistor (251) may be connected to the drain electrode of the second transistor (252). For example, the source electrode of the first transistor (251) may be connected to the drain electrode of the fifth transistor (255). For example, the source electrode of the first transistor (251) may be connected to the drain electrode of the eighth transistor (258). For example, the drain electrode of the first transistor (251) may be connected to the source electrode of the third transistor (253). For example, the drain electrode of the first transistor (251) may be connected to the source electrode of the sixth transistor (256). For example, the first transistor (251) may be used to provide a current (270) according to a data voltage (Vdata) to the light emitting diode (250).

[0104] For example, the gate electrode of the second transistor (252) may be configured to receive the fourth signal (264). For example, the source electrode of the second transistor (252) may be configured to obtain the data voltage (Vdata). For example, the fourth signal (264) may be used to apply the data voltage (Vdata) to the first transistor (251). For example, the fourth signal (264) may be referred to as GW, GW signal, switching signal, switching scan signal, GW scan signal, or fourth scan signal.

[0105] For example, the gate electrode of the third transistor (253) may be configured to receive a second signal (262). For example, the second signal (262) may be referred to as a GW_o signal, GW_o, a GC signal, a GC, a compensation signal, a compensation scan signal, a GW_o scan signal, or a second scan signal.

[0106] For example, the gate electrode of the fourth transistor (254) may be configured to receive the first signal (261). For example, the source electrode of the fourth transistor (254) may be configured to obtain a first initialization voltage (VINT) (e.g., about -3.5 (V)) (e.g., VINT (137) of FIG. 1A). For example, the first signal (261) may be used to initialize the gate electrode of the first transistor (251). For example, the first signal (261) may be referenced as GI, GI_o, GI signal, initialization signal, initialization scan signal, GI (GI_o) scan signal, or first scan signal.

[0107] For example, the gate electrode of the fifth transistor (255) may be configured to receive a light-emitting signal (265). For example, the source electrode of the fifth transistor (255) may be configured to obtain a driving voltage (VDD) (e.g., VDD (135) of FIG. 1A).

[0108] For example, the gate electrode of the sixth transistor (256) may be configured to receive the emission signal (265). For example, the drain electrode of the sixth transistor (256) may be connected to the source electrode of the seventh transistor (257). For example, the drain electrode of the sixth transistor (256) may be connected to the anode of the light emitting element (250). For example, the emission signal (265) may be referred to as an EM signal, EM, emission scan signal, EM scan signal, or fifth scan signal.

[0109] For example, the gate electrode of the seventh transistor (257) may be configured to receive the third signal (263). For example, the drain electrode of the seventh transistor (257) may be configured to obtain the second initialization voltage (VAINT) (e.g., about -3 (V)) (e.g., VAINT (138) of FIG. 1A).

[0110] For example, the gate electrode of the eighth transistor (258) may be configured to receive the third signal (263). For example, the source electrode of the eighth transistor (258) may be configured to obtain a bias voltage (Vbias) (e.g., about 6 (V)).

[0111] For example, the third signal (263) may be used to initialize a light-emitting element (250) including an anode connected to the source electrode of the seventh transistor (257). For example, the third signal (263) may be used to initialize a light-emitting element (250) (or a parasitic capacitor of the light-emitting element (250)). For example, the third signal (263) may be referenced as GB, a GB signal, a bypass signal, a bypass scan signal, a GB scan signal, or a third scan signal.

[0112] For example, the cathode of the light emitting element (250) can be configured to obtain a driving voltage (VSS) (e.g., VSS (136) of FIG. 1A).

[0113] For example, the display driving IC (230) can display an image on the display panel (210) based on providing a first signal (261), a second signal (262), a third signal (263), a fourth signal (264), and a light emitting signal (265) to each of the plurality of sub-pixels.

[0114] FIG. 3 illustrates an example of a method for gradually changing some of the first parameters and maintaining some of the other parameters to change the display mode from a first mode to a second mode for low power consumption.

[0115] FIG. 3 illustrates an example (300) of a method for gradually changing some of the first parameters and maintaining other parameters in order to change the mode of the display (205) from the first mode to the second mode for low power consumption. For example, some of the first parameters may include a clock frequency (110) and a refresh rate (120). For example, some of the other parameters of the first parameters may include voltage parameters (e.g., VLIN (131), VLOUT (132), VGH (133), VGL (134), VDD (135), VSS (136), VINT (137), and VAINT (138)).

[0116] For example, the display driving IC (230) may display an image on the display panel (210) of the display (205) at a first refresh rate (320-1) based on a first clock frequency (310-1) within the first mode of the display (205). For example, a plurality of voltages may be used to display the image on the display panel (210) within the first mode. For example, in order to display the image on the display panel (210) within the first mode, VLIN (131) having a voltage level (331), VLOUT (132) having a voltage level (332), VGH (133) having a voltage level (333), VGL (134) having a voltage level (334), VDD (135) having a voltage level (335), VSS (136) having a voltage level (336), VINT (137) having a voltage level (337), and VAINT (138) having a voltage level (338) may be used.

[0117] Referring to example (300), the electronic device (200) (or the display driving IC (230)) may change the state (or level, value) of each of the clock frequency (110) and the refresh rate (120) among the first parameters in order to change the mode of the display (205) from the first mode to the second mode. For example, the electronic device (200) (or the display driving IC (230)) may gradually change each of the clock frequency (110) and the refresh rate (120) within a time period (duration) (307) in order to change the mode of the display (205) from the first mode to the second mode. For example, the time period (307) may represent a time length between timing (305) and timing (306). For example, the timing (305) may be the time after receiving a command from the processor (220) instructing the display (205) to change the mode from the first mode to the second mode.

[0118] For example, the display driving IC (230) can gradually change the clock frequency (110) from the first clock frequency (310-1) to the second clock frequency (310-2) in order to change the mode of the display (205) from the first mode to the second mode. For example, the second clock frequency (310-2) can be lower than the first clock frequency (310-1). For example, the display driving IC (230) can gradually change (or lower) the clock frequency (110) from the first clock frequency (310-1) to the second clock frequency (310-2) within (or over) a time period (307) in order to change the mode of the display (205) from the first mode to the second mode.

[0119] Referring to FIG. 3, a specific example (350) for a gradual change of the clock frequency (110) from a first clock frequency (310-1) to a second clock frequency (310-2) is illustrated. Referring to the example (350), the display driving IC (230) can gradually change the clock frequency (110) within a time period (307) including a plurality of time periods (307-1, 307-2). For example, the time periods (307-1, 307-2) can represent time periods of a plurality of vertical synchronization signals. In the example (350) of FIG. 3, for convenience of explanation, two time periods (307-1, 307-2) of two vertical synchronization signals are illustrated, but the present disclosure is not limited thereto.

[0120] In example (350), the display driving IC (230) can change the clock frequency (110) from the first clock frequency (310-1) (e.g., 120 Hz) to the third clock frequency (310-3) (e.g., 60 Hz) within the first time interval (307-1) of the first vertical synchronization signal. For example, the third clock frequency (310-3) can be lower than the first clock frequency (310-1) and higher than the second clock frequency (310-2) (e.g., 30 Hz). In addition, the display driving IC (230) can change the clock frequency (110) from the third clock frequency (310-3) to the second clock frequency (310-2) within the second time interval (307-2) of the second vertical synchronization signal following the first vertical synchronization signal.

[0121] In example (350), the length of the first time interval (307-1) is shown to be equal to the length of the second time interval (307-2), but the present disclosure is not limited thereto. For example, the length of the time interval of the vertical synchronization signal is determined according to the clock frequency (110), and may change as the clock frequency (110) changes. As the mode of the display (205) changes from the first mode to the second mode, the clock frequency (110) decreases, and therefore, the length of the second time interval (307-2) may be longer than the length of the first time interval (307-1).

[0122] Additionally, in example (350), the clock frequency (110) is exemplified as gradually changing for each time interval of the vertical synchronization signal, but the present disclosure is not limited thereto. In one example, the clock frequency (110) may also gradually change for each time interval of a plurality of horizontal synchronization signals included in the vertical synchronization signal.

[0123] In addition, in example (350), an example is described in which the clock frequency (110) is changed from a first clock frequency (310-1) of 120 Hz to a third clock frequency (310-3) of 60 Hz, and from the third clock frequency (310-3) to a second clock frequency (310-2) of 30 Hz, and is reduced by the same ratio (1 / 2 times) for each time interval, but the present disclosure is not limited thereto.

[0124] For example, the length of the time intervals (e.g., the first time interval (307-1) and the second time interval (307-2)) at which the clock frequency (110) gradually changes and the rate (or size) (e.g., 1 / 2 times) at which the clock frequency (110) gradually changes can be determined based on a variable criterion. For example, the variable criterion can include at least one of a brightness parameter, a size of an image to be displayed through the display panel (210), or a difference between clock frequencies of modes of the display (205).

[0125] For example, the display driving IC (230) can identify the illumination outside the electronic device (200) when switching the mode of the display (205) from the first mode to the second mode. The darker the illumination is, the higher the sensitivity to changes in brightness or color of the image displayed on the display panel (210) can be. Accordingly, the display driving IC (230) can adjust the length of the time period during which the clock frequency (110) gradually changes and the rate (or size) at which the clock frequency (110) gradually changes so that the change between the first mode and the second mode is not recognized by the user's eyes. For example, when the identified illumination has a first illumination value, the display driving IC (230) can set the rate (or size) at which the clock frequency (110) gradually changes to a first rate (or first size). For example, when the identified illuminance has a second illuminance value that is lower than the first illuminance value, the display driving IC (230) may set the rate (or magnitude) at which the clock frequency (110) gradually changes to a second rate (or magnitude) that is lower than the first rate. Or, for example, when the identified illuminance has a first illuminance value, the display driving IC (230) may set the length of the time period at which the clock frequency (110) gradually changes to a first length. For example, when the identified illuminance has a second illuminance value that is lower than the first illuminance value, the display driving IC (230) may set the length of the time period at which the clock frequency (110) gradually changes to a second length that is longer than the first length. In the above example, an example of independently changing the rate or the length of the time period for gradually changing the clock frequency (110) is described, but the present disclosure is not limited thereto.For example, the display driving IC (230) may change both the ratio and the length of the time period depending on the identified illuminance.

[0126] For example, the display driving IC (230) can identify the brightness (or luminance) of the display panel (210) when the mode of the display (205) is switched from the first mode to the second mode. The lower the brightness is, the higher the sensitivity to changes in the brightness or color of the image displayed on the display panel (210). Therefore, the display driving IC (230) can adjust the length of the time period during which the clock frequency (110) gradually changes and the rate (or size) at which the clock frequency (110) gradually changes so that the change between the first mode and the second mode is not recognized by the user's eyes. For example, when the identified brightness has a first brightness, the display driving IC (230) can set the rate (or size) at which the clock frequency (110) gradually changes to a first rate (or first size). For example, if the identified brightness has a second brightness that is lower than the first brightness, the display driving IC (230) may set the rate (or size) at which the clock frequency (110) gradually changes to a second rate (or second size) that is lower than the first rate. Or, for example, if the identified brightness has a first brightness, the display driving IC (230) may set the length of the time period at which the clock frequency (110) gradually changes to a first length. For example, if the identified brightness has a second brightness that is lower than the first brightness, the display driving IC (230) may set the length of the time period at which the clock frequency (110) gradually changes to a second length that is longer than the first length. In the above example, an example of independently changing the rate or the length of the time period for gradually changing the clock frequency (110) is described, but the present disclosure is not limited thereto. For example, the display driving IC (230) may change both the ratio and the length of the time period depending on the identified brightness.

[0127] For example, the display driving IC (230) can identify the size of an image to be displayed on the display panel (210) when the mode of the display (205) is switched from the first mode to the second mode. For example, the size of the image may include the ratio of pixels of the display panel (210) to be used to display the image (or, on pixel ratio (OPR)) or the update area of ​​the image (e.g., the range in which data for the image is updated in the memory of the processor (220) or the memory of the display driving IC (230). For example, the larger the size is, the higher the sensitivity to changes in brightness or color of the image displayed on the display panel (210). Accordingly, the display driving IC (230) can adjust the length of the time interval in which the clock frequency (110) gradually changes and the rate (or size) in which the clock frequency (110) gradually changes so that the change between the first mode and the second mode is not recognized by the user's eyes. For example, if the identified size has a first size, the display driving IC (230) can set the rate (or size) at which the clock frequency (110) gradually changes to a first rate (or first size). For example, if the identified size has a second size that is larger than the first size, the display driving IC (230) can set the rate (or size) at which the clock frequency (110) gradually changes to a second rate (or second size) that is lower than the first rate. Or, for example, if the identified size has a first size, the display driving IC (230) can set the length of the time interval at which the clock frequency (110) gradually changes to a first length.For example, if the identified size has a second size that is larger than the first size, the display driving IC (230) may set the length of the time period in which the clock frequency (110) is gradually changed to a second length that is longer than the first length. In the above example, an example of independently changing the ratio or the length of the time period for the gradual change of the clock frequency (110) is described, but the present disclosure is not limited thereto. For example, the display driving IC (230) may also change both the ratio and the length of the time period depending on the identified size.

[0128] For example, the display driving IC (230) can identify the difference between the modes of the clock frequency (110) when switching the mode of the display (205) from the first mode to the second mode. For example, since the clock frequency (110) changes depending on the usage conditions of the electronic device (200), the hysteresis characteristic of the display panel (210) can also change. Therefore, when changing between modes (e.g., from the first mode to the second mode), the display driving IC (230) can adjust the length of the time interval during which the clock frequency (110) gradually changes and the rate (or size) during which the clock frequency (110) gradually changes based on the identified difference between the clock frequency before the change (e.g., the first clock frequency (310-1)) and the clock frequency after the change (e.g., the second clock frequency (310-2)). For example, if the identified difference has a first difference, the display driving IC (230) can set the rate (or size) at which the clock frequency (110) gradually changes to a first rate (or first size). For example, if the identified difference has a second difference that is smaller than the first difference, the display driving IC (230) can set the rate (or size) at which the clock frequency (110) gradually changes to a second rate (or second size) that is lower than the first rate. Or, for example, if the identified difference has a first difference, the display driving IC (230) can set the length of the time interval at which the clock frequency (110) gradually changes to a first length. For example, if the identified difference has a second difference that is smaller than the first difference, the display driving IC (230) can set the length of the time interval at which the clock frequency (110) gradually changes to a second length that is longer than the first length.Although the above example describes an example of independently changing the ratio or the length of the time period for a gradual change in the clock frequency (110), the present disclosure is not limited thereto. For example, the display driver IC (230) may change both the ratio and the length of the time period depending on the identified difference.

[0129] For example, the display driving IC (230) can gradually change the refresh rate (120) from the first refresh rate (320-1) to the second refresh rate (320-2) in order to change the mode of the display (205) from the first mode to the second mode. For example, the second refresh rate (320-2) can be lower than the first refresh rate (320-1). For example, the display driving IC (230) can gradually change (or lower) the refresh rate from the first refresh rate (320-1) to the second refresh rate (320-2) within (or over) a time period (307) in order to change the mode of the display (205) from the first mode to the second mode.

[0130] The example (350) in which the clock frequency (110) of FIG. 3 is gradually changed within a time period (307) can also be applied to a gradual change in the playback rate (120).

[0131] Referring to example (300), the gradual change of the refresh rate (120) from the first refresh rate (320-1) to the second refresh rate (320-2) and the gradual change of the clock frequency (110) from the first clock frequency (310-1) to the second clock frequency (310-2) can be synchronized with each other. For example, the display driving IC (230) can perform the gradual change of the refresh rate (120) from the first refresh rate (320-1) to the second refresh rate (320-2) by performing the gradual change of the clock frequency (110) from the first clock frequency (310-1) to the second clock frequency (310-2). As a non-limiting example, when the clock frequency (110) is gradually changed from a first clock frequency (310-1) of 120 Hz to a second clock frequency (310-2) of 30 Hz, the refresh rate (120) may also be gradually changed from the first refresh rate (320-1) of 120 Hz to the second refresh rate (320-2) of 30 Hz. In the above example, the clock frequency (110) and the refresh rate (120) are described as being changed to the same value, but the present disclosure is not limited thereto. For example, the clock frequency (110) may be set to an integer multiple of the refresh rate (120). For example, when the clock frequency (110) is gradually changed from a first clock frequency (310-1) of 120 Hz to a second clock frequency (310-2) of 30 Hz, the refresh rate (120) can be gradually changed from a first refresh rate (320-1) of 60 Hz (=120 / 2) to a second refresh rate (320-2) of 10 Hz (=30 / 3).

[0132] In the example (300) of FIG. 3, the display driving IC (230) may refrain from changing some of the other parameters (or voltage parameters) among the first parameters in order to change the mode of the display (205) from the first mode to the second mode.

[0133] For example, the display driving IC (230) may refrain from changing the voltage level (331) of the VLIN (131) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (331) of the VLIN (131) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (331) of the VLIN (131) in the first mode is maintained the same in the second mode.

[0134] For example, the display driving IC (230) may refrain from changing the voltage level (332) of VLOUT (132) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (332) of VLOUT (132) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (332) of VLOUT (132) in the first mode is maintained the same in the second mode.

[0135] For example, the display driving IC (230) may refrain from changing the voltage level (333) of VGH (133) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (333) of VGH (133) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (333) of VGH (133) in the first mode is maintained the same even in the second mode.

[0136] For example, the display driving IC (230) may refrain from changing the voltage level (334) of the VGL (134) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (334) of the VGL (134) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (334) of the VGL (134) in the first mode is maintained the same in the second mode.

[0137] For example, the display driving IC (230) may refrain from changing the voltage level (335) of VDD (135) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (335) of VDD (135) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (335) of VDD (135) in the first mode is maintained the same in the second mode.

[0138] For example, the display driving IC (230) may refrain from changing the voltage level (336) of VSS (136) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (336) of VSS (136) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (336) of VSS (136) in the first mode is maintained the same in the second mode.

[0139] For example, the display driving IC (230) may refrain from changing the voltage level (337) of VINT (137) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (337) of VINT (137) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (337) of VINT (137) in the first mode is maintained the same in the second mode.

[0140] For example, the display driving IC (230) may refrain from changing the voltage level (338) of the VAINT (138) to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the voltage level (338) of the VAINT (138) to change the mode of the display (205) from the first mode to the second mode may indicate that the voltage level (338) of the VAINT (138) in the first mode is maintained the same even in the second mode.

[0141] FIG. 4 illustrates an example of a method for gradually changing some of the second parameters while maintaining some of the other parameters to change the display mode from the first mode to the second mode for low power consumption.

[0142] FIG. 4 illustrates an example (400) of a method for gradually changing some of the second parameters while maintaining other parameters to change the mode of the display (205) from the first mode to the second mode for low power consumption. For example, some of the second parameters may include a gamma value (183). For example, some of the other second parameters may include a DBV (181) and an AOR (182).

[0143] For example, the display driving IC (230) can display an image on the display panel (210) of the display (205) so that the luminance is recognized based on the brightness value (481), the duty (482), and the first gamma value (483-1) within the first mode of the display (205).

[0144] Referring to example (400), the electronic device (200) (or display driving IC (230)) may refrain from changing the state (or level, value) of each of DBV (181) and AOR (182) among the second parameters in order to change the mode of the display (205) from the first mode to the second mode.

[0145] For example, the display driving IC (230) may refrain from changing the brightness value (481) of the DBV (181) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the brightness value (481) of the DBV (181) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the brightness value (481) of the DBV (181) in the first mode is maintained to be the same as that in the second mode. As in example (400), in order to maintain the brightness value of the DBV (181) as the brightness value (481) in the first mode and the second mode, the brightness value of the DBV (181) in the second mode may be adjusted (or tuned, set, mapped) to be the same as the brightness value of the DBV (181) in the first mode. Unlike the example (180) of FIG. 1C in which the first brightness value (181-1) (e.g., "00F6") of the DBV (181) in the first mode for indicating 60 nit and the second brightness value (181-2) (e.g., "0FFF") of the DBV (181) in the second mode are different from each other, referring to the example (400), the brightness value (481) of the DBV (181) in both the first mode and the second mode may be a value (e.g., "00F6") for indicating 60 nit.

[0146] For example, the display driving IC (230) may refrain from changing the duty (482) of the AOR (182) in order to change the mode of the display (205) from the first mode to the second mode. Refraining from changing the duty (482) of the AOR (182) in order to change the mode of the display (205) from the first mode to the second mode may indicate that the duty (482) of the AOR (182) in the first mode is maintained the same in the second mode. As in example (400), in order to maintain the duty of the AOR (182) as the duty (482) in the first mode and the second mode, the duty of the AOR (182) in the second mode may be adjusted (or tuned, set) to be the same as the duty of the AOR (182) in the first mode. Unlike the example (180) of FIG. 1C, where the first duty (182-1) (e.g., 38%) of the AOR (182) in the first mode to indicate 60 nit and the second duty (182-2) (e.g., 16%) of the AOR (182) in the second mode are different from each other, referring to the example (400), the duty (482) of the AOR (182) in both the first mode and the second mode may be the duty (e.g., 38%) to indicate 60 nit.

[0147] Referring to example (400), the electronic device (200) (or the display driving IC (230)) may change the state (or level, value) of the gamma value (183) among the second parameters in order to change the mode of the display (205) from the first mode to the second mode. For example, the electronic device (200) (or the display driving IC (230)) may gradually change the gamma value (183) in order to change the mode of the display (205) from the first mode to the second mode within a time period (407). For example, the time period (407) may represent a time length between timing (405) and timing (406). For example, timing (405) may be a time after receiving a command from the processor (220) instructing to change the mode of the display (205) from the first mode to the second mode.

[0148] For example, the display driving IC (230) may gradually change the gamma value (183) from the first gamma value (483-1) to the second gamma value (483-2) in order to change the mode of the display (205) from the first mode to the second mode. For example, the second gamma value (483-2) may be lower than the first gamma value (483-1). Unlike the example (180) of FIG. 1c where the gamma value (183) changes from the first gamma value (183-1) to the second gamma value (183-2) at the timing (105), in the example (400), the display driving IC (230) can gradually change (or increase) from the first gamma value (483-1) to the second gamma value (483-2) within (or over) a time period (407) to change the mode of the display (205) from the first mode to the second mode.

[0149] For example, within a time period (407), the specific details of the gradual change from the first gamma value (483-1) to the second gamma value (483-2) can be substantially identically applied to the details of the gradual change of the clock frequency (110) in the example (350) of FIG. 3. As a non-limiting example, the time period (407) can be synchronized with the time period (307).

[0150] Although not illustrated in FIG. 4, the length of the time interval during which the gamma value (183) gradually changes (e.g., time intervals within the time period (407)) and the magnitude by which the gamma value (183) gradually changes may be determined based on a variable criterion. For example, the variable criterion may include at least one of a brightness parameter, a size of an image to be displayed through the display panel (210), or a difference between clock frequencies of modes of the display (205). Adjusting the length of the time interval during which the gamma value (183) gradually changes and the magnitude by which the gamma value (183) gradually changes based on the variable criterion may be substantially identically applied to the description of adjusting the length of the time interval during which the clock frequency (110) gradually changes and the rate (or magnitude) by which the clock frequency (110) gradually changes in the example (350) of FIG. 3.

[0151] Figure 5 illustrates an example of a method for gradually changing first parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0152] FIG. 5 illustrates an example (500) of a method for gradually changing all of the first parameters to change the mode of the display (205) from the first mode to the second mode for low power consumption. Unlike the example (300) of FIG. 3, the example (500) of FIG. 5 illustrates an example of gradually changing all of the first parameters within a time period (507).

[0153] Referring to example (500), the electronic device (200) (or the display driving IC (230)) may change the state (or level, value) of each of the first parameters to change the mode of the display (205) from the first mode to the second mode. For example, the electronic device (200) (or the display driving IC (230)) may gradually change each of the first parameters to change the mode of the display (205) from the first mode to the second mode within a time period (507). For example, the time period (507) may represent a time length between timing (505) and timing (506). For example, timing (505) may be a time after receiving a command from the processor (220) instructing to change the mode of the display (205) from the first mode to the second mode.

[0154] For example, the display driving IC (230) can gradually change the clock frequency (110) from the first clock frequency (510-1) to the second clock frequency (510-2) within (or over) the time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the second clock frequency (510-2) may be lower than the first clock frequency (510-1). For example, the display driving IC (230) can gradually change the refresh rate (120) from the first refresh rate (520-1) to the second refresh rate (520-2) within (or over) the time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the second refresh rate (520-2) may be lower than the first refresh rate (520-1).

[0155] For example, the display driver IC (230) can gradually change VLIN (131) from voltage level (531-1) to voltage level (531-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (531-2) can be lower than the voltage level (531-1). For example, the display driver IC (230) can gradually change VLOUT (132) from voltage level (532-1) to voltage level (532-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (532-2) can be higher than the voltage level (532-1).

[0156] Referring to FIG. 5, a specific example (550) for a gradual change from a voltage level (531-1) of VLIN (131) to a voltage level (531-2) is illustrated. Referring to the example (550), the display driving IC (230) can gradually change the VLIN (131) within a time period (507) including a plurality of time periods (507-1, 507-2). For example, the time periods (507-1, 507-2) can represent time periods of a plurality of vertical synchronization signals. In the example (550) of FIG. 5, for convenience of explanation, two time periods (507-1, 507-2) of two vertical synchronization signals are illustrated, but the present disclosure is not limited thereto.

[0157] In example (550), the display driving IC (230) can change the VLIN (131) from voltage level (531-1) to voltage level (531-3) within a first time interval (507-1) of the first vertical synchronization signal. For example, the voltage level (531-3) can be lower than the voltage level (531-1) and higher than the voltage level (531-2). In addition, the display driving IC (230) can change the VLIN (131) from voltage level (531-3) to voltage level (531-2) within a second time interval (507-2) of a second vertical synchronization signal following the first vertical synchronization signal.

[0158] In example (550), the length of the first time interval (507-1) is illustrated as being equal to the length of the second time interval (507-2), but the present disclosure is not limited thereto. For example, the length of the time interval of the vertical synchronization signal is determined according to the clock frequency (110), and may change as the clock frequency (110) changes. As the mode of the display (205) changes from the first mode to the second mode, the clock frequency (110) decreases, and therefore, the length of the second time interval (507-2) may be longer than the length of the first time interval (507-1).

[0159] Additionally, in example (550), it is illustrated that VLIN (131) gradually changes for each time interval of the vertical synchronization signal, but the present disclosure is not limited thereto. In one example, VLIN (131) may also gradually change for each time interval of a plurality of horizontal synchronization signals included in the vertical synchronization signal.

[0160] Additionally, in example (550), when VLIN (131) changes from voltage level (531-1) to voltage level (531-3) lower by difference (531a), and from voltage level (531-3) to voltage level (531-2) lower by difference (531b), difference (531a) is illustrated as being identical to difference (531b), but the present disclosure is not limited thereto. For example, difference (531a) may be different from difference (531b).

[0161] For example, the length of the time intervals over which the VLIN (131) gradually changes (e.g., the first time interval (507-1) and the second time interval (507-2)) and the magnitude of the time intervals over which the VLIN (131) gradually changes (e.g., the difference (531a), the difference (531b)) can be determined based on a variable criterion. For example, the variable criterion can include at least one of a brightness parameter, a size of an image to be displayed through the display panel (210), or a difference between clock frequencies of modes of the display (205). Adjusting the length of the time interval in which the VLIN (131) gradually changes (e.g., the first time interval (507-1) and the second time interval (507-2)) and the magnitude in which the VLIN (131) gradually changes (e.g., the difference (531a), the difference (531b)) based on the above variable criteria can be substantially identically applied to the description of adjusting the length of the time interval in which the clock frequency (110) gradually changes and the ratio (or magnitude) in which the clock frequency (110) gradually changes in the example (350) of FIG. 3.

[0162] In example (550), an example of a gradual change of VLIN (131) is illustrated, but the present disclosure is not limited thereto. The example (550) of FIG. 5, in which VLIN (131) is gradually changed within a time period (507), can also be applied to a gradual change of each of the first parameters.

[0163] For example, the display driving IC (230) can gradually change the VGH (133) from a voltage level (533-1) to a voltage level (533-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (533-2) can be lower than the voltage level (533-1). For example, the display driving IC (230) can gradually change the VGL (134) from a voltage level (534-1) to a voltage level (534-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (534-2) can be higher than the voltage level (534-1).

[0164] For example, the display driver IC (230) can gradually change VDD (135) from voltage level (535-1) to voltage level (535-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (535-2) can be lower than the voltage level (535-1). For example, the display driver IC (230) can gradually change VSS (136) from voltage level (536-1) to voltage level (536-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (536-2) can be higher than the voltage level (536-1).

[0165] For example, the display driver IC (230) can gradually change VINT (137) from voltage level (537-1) to voltage level (537-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (537-2) can be higher than the voltage level (537-1). For example, the display driver IC (230) can gradually change VINT (138) from voltage level (538-1) to voltage level (538-2) within (or over) a time period (507) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (538-2) can be higher than the voltage level (538-1).

[0166] For example, the display driving IC (230) may gradually change the clock frequency (110) and the refresh rate (120) among the first parameters, as in the example (300) of FIG. 3, or may gradually change all of the first parameters, as in the example (500) of FIG. 5, based on the remaining battery of the electronic device (200). For example, the display driving IC (230) may gradually change all of the first parameters, as in the example (500) of FIG. 5, in order to further reduce battery consumption when the remaining battery of the electronic device (200) is less than a reference amount. The display driving IC (230) may gradually change the clock frequency (110) and the refresh rate (120) among the first parameters, as in the example (300) of FIG. 3, in case the remaining battery of the electronic device (200) is greater than or equal to the reference amount.

[0167] Figure 6 illustrates another example of a method for gradually changing the first parameters to change the mode of the display from a first mode to a second mode for low power consumption.

[0168] FIG. 6 illustrates an example (600) of a method for gradually changing all of the first parameters to change the mode of the display (205) from the first mode to the second mode for low power consumption. The example (600) of FIG. 6 illustrates an example in which the first parameters are gradually changed within different time periods, unlike the example (500) of FIG. 5 in which all of the first parameters are gradually changed within a time period (507).

[0169] Referring to example (600), the electronic device (200) (or display driving IC (230)) can change the state (or level, value) of each of the first parameters to change the mode of the display (205) from the first mode to the second mode.

[0170] For example, the electronic device (200) (or display driving IC (230)) may gradually change each of the clock frequency (110), refresh rate (120), VLIN (131), VLOUT (132), VDD (135), VSS (136), VINT (137), and VAINT (138) within a time period (607) to change the mode of the display (205) from the first mode to the second mode. For example, the time period (607) may represent a length of time between timing (605) and timing (606). For example, timing (605) may be a time after receiving a command from the processor (220) instructing to change the mode of the display (205) from the first mode to the second mode.

[0171] For example, the electronic device (200) (or the display driving IC (230)) can gradually change each of VGH (133) and VGL (134) to change the mode of the display (205) from the first mode to the second mode within a time period (609) that is different from the time period (607). For example, the time period (609) can represent a length of time between timing (605) and timing (608). For example, timing (608) can represent a time after timing (606). In the example (600) of FIG. 6, the time period (607) and the time period (609) are illustrated as starting from the same timing (605), but the present disclosure is not limited thereto. For example, the start timing of the time period (607) and the start timing of the time period (609) can be different from each other.

[0172] For example, the display driver IC (230) can gradually change the VLIN (131) from a voltage level (631-1) to a voltage level (631-2) within (or over) a time period (607) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (631-2) can be lower than the voltage level (631-1). For example, the display driver IC (230) can gradually change the VGH (133) from a voltage level (633-1) to a voltage level (633-2) within (or over) a time period (607) to change the mode of the display (205) from the first mode to the second mode. For example, the voltage level (633-2) can be lower than the voltage level (633-1).

[0173] Referring to FIG. 6, a specific example (650) of a gradual change from a voltage level (631-1) of a VLIN (131) to a voltage level (631-2) is illustrated. Referring to the example (650), the display driving IC (230) can gradually change the clock frequency (110) within a time period (607) including a plurality of time periods (607-1, 607-2). For example, the time periods (607-1, 607-2) can represent time periods of a plurality of vertical synchronization signals.

[0174] Also, referring to FIG. 6, a specific example (660) for a gradual change from a voltage level (633-1) of VGH (133) to a voltage level (633-2) is illustrated. Unlike example (650), referring to example (660), the display driving IC (230) can gradually change VGH (133) within a time period (609) including a plurality of time periods (609-1, 609-2, 609-3, 609-4, 609-5). For example, the time periods (609-1, 609-2, 609-3, 609-4, 609-5) can represent time periods of a plurality of vertical synchronization signals.

[0175] For example, the length of the time period (609) may be longer than the length of the time period (607). For example, the time period (609) may include time intervals of five vertical synchronization signals, and the time period (607) may include time intervals of two vertical synchronization signals.

[0176] As described above, the display driving IC (230) can change each of the first parameters within different time periods in order to change the mode of the display (205) from the first mode to the second mode.

[0177] FIG. 7A illustrates an example of a method for gradually changing some of the first parameters while maintaining some of the other parameters to change the display mode from a second mode for low power consumption to a first mode.

[0178] FIG. 7A illustrates an example (700) of a method for gradually changing some of the first parameters while maintaining other parameters in order to change the mode of the display (205) from the second mode for low power consumption to the first mode. For example, some of the first parameters may include a clock frequency (110) and a refresh rate (120). For example, some of the other parameters of the first parameters may include voltage parameters (e.g., VLIN (131), VLOUT (132), VGH (133), VGL (134), VDD (135), VSS (136), VINT (137), and VAINT (138)).

[0179] For example, the display driving IC (230) may display an image on the display panel (210) of the display (205) at a second refresh rate (720-2) based on a second clock frequency (710-2) within the second mode of the display (205). For example, a plurality of voltages may be used to display the image on the display panel (210) within the second mode. For example, in order to display the image on the display panel (210) within the second mode, VLIN (131) having a voltage level (731), VLOUT (132) having a voltage level (732), VGH (133) having a voltage level (733), VGL (134) having a voltage level (734), VDD (135) having a voltage level (735), VSS (136) having a voltage level (736), VINT (137) having a voltage level (737), and VAINT (138) having a voltage level (738) may be used. In FIG. 7A, an example in which the plurality of voltages do not change (or the voltage levels are maintained) is illustrated, but the present disclosure is not limited thereto. For example, to change the mode of the display (205) from the second mode to the first mode, each of the methods of FIG. 4, FIG. 5, and FIG. 6 may be used. For example, to change the mode of the display (205) from the second mode to the first mode, the display driving IC (230) may perform gradual changes to some of the second parameters and maintain other some of the second parameters. Or, for example, to change the mode of the display (205) from the second mode to the first mode, the display driving IC (230) may perform gradual changes to all of the first parameters.

[0180] Referring to example (700), the electronic device (200) (or the display driving IC (230)) may change the state (or level, value) of each of the clock frequency (110) and the refresh rate (120) among the first parameters in order to change the mode of the display (205) from the second mode to the first mode. For example, the electronic device (200) (or the display driving IC (230)) may gradually change each of the clock frequency (110) and the refresh rate (120) in order to change the mode of the display (205) from the second mode to the first mode within a time period (707). For example, the time period (707) may represent a time length between timing (705) and timing (706). For example, the timing (705) may be the time after receiving a command from the processor (220) instructing the display (205) to change the mode from the second mode to the first mode.

[0181] For example, the display driving IC (230) can gradually change the clock frequency (110) from the second clock frequency (710-2) to the first clock frequency (710-1) in order to change the mode of the display (205) from the second mode to the first mode. For example, the second clock frequency (710-2) can be lower than the first clock frequency (710-1). For example, the display driving IC (230) can gradually change (or increase) the clock frequency (110) from the second clock frequency (710-2) to the first clock frequency (710-1) within (or over) a time period (707) in order to change the mode of the display (205) from the second mode to the first mode.

[0182] For example, the display driving IC (230) can gradually change the refresh rate (120) from the second refresh rate (720-2) to the first refresh rate (720-1) in order to change the mode of the display (205) from the second mode to the first mode. For example, the second refresh rate (720-2) can be lower than the first refresh rate (720-1). For example, the display driving IC (230) can gradually change (or increase) the refresh rate from the second refresh rate (720-2) to the first refresh rate (720-1) within (or over) a time period (707) in order to change the mode of the display (205) from the first mode to the second mode.

[0183] The example (350) in which the clock frequency (110) of FIG. 3 is gradually changed within a time period (307) can also be applied to the case in which the clock frequency (110) and the refresh rate (120) of FIG. 7a are gradually changed within a time period (707).

[0184] Referring to example (700), the gradual change of the refresh rate (120) from the second refresh rate (720-2) to the first refresh rate (720-1) and the gradual change of the clock frequency (110) from the second clock frequency (710-2) to the first clock frequency (710-1) can be synchronized with each other. For example, the display driving IC (230) can perform the gradual change of the refresh rate (120) from the second refresh rate (720-2) to the first refresh rate (720-1) by performing the gradual change of the clock frequency (110) from the second clock frequency (710-2) to the first clock frequency (710-1).

[0185] In the example (700) of FIG. 7a, the display driving IC (230) may refrain from changing some of the other parameters (or voltage parameters) among the first parameters in order to change the mode of the display (205) from the second mode to the first mode.

[0186] For example, the display driving IC (230) may refrain from changing the voltage level (731) of the VLIN (131) in order to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (731) of the VLIN (131) in order to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (731) of the VLIN (131) in the second mode is maintained the same even in the first mode.

[0187] For example, the display driving IC (230) may refrain from changing the voltage level (732) of VLOUT (132) in order to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (732) of VLOUT (132) in order to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (732) of VLOUT (132) in the second mode is maintained the same even in the first mode.

[0188] For example, the display driving IC (230) may refrain from changing the voltage level (733) of VGH (133) in order to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (733) of VGH (133) in order to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (733) of VGH (133) in the second mode is maintained the same even in the first mode.

[0189] For example, the display driving IC (230) may refrain from changing the voltage level (734) of the VGL (134) in order to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (734) of the VGL (134) in order to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (734) of the VGL (134) in the second mode is maintained the same even in the first mode.

[0190] For example, the display driving IC (230) may refrain from changing the voltage level (735) of VDD (135) in order to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (735) of VDD (135) in order to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (735) of VDD (135) in the second mode is maintained the same even in the first mode.

[0191] For example, the display driving IC (230) may refrain from changing the voltage level (736) of VSS (136) in order to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (736) of VSS (136) in order to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (736) of VSS (136) in the second mode is maintained the same even in the first mode.

[0192] For example, the display driving IC (230) may refrain from changing the voltage level (737) of VINT (137) in order to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (737) of VINT (137) in order to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (737) of VINT (137) in the second mode is maintained the same even in the first mode.

[0193] For example, the display driving IC (230) may refrain from changing the voltage level (738) of the VAINT (138) to change the mode of the display (205) from the second mode to the first mode. Refraining from changing the voltage level (738) of the VAINT (138) to change the mode of the display (205) from the second mode to the first mode may indicate that the voltage level (738) of the VAINT (138) in the second mode is maintained the same even in the first mode.

[0194] FIG. 7b illustrates an example of a timing diagram showing a case where the mode of the display changes from a first mode to a second mode and a case where the mode of the display changes from a second mode to a first mode.

[0195] FIG. 7b illustrates an example (751) of a timing diagram for changing the mode of the display (205) from the first mode to the second mode and an example (752) of a timing diagram for changing the mode of the display (205) from the second mode to the first mode.

[0196] Referring to examples (751) and (752), the display driving IC (230) may receive a command instructing to switch the mode of the display (205) at a timing (760). For example, the display driving IC (230) may receive the command instructing to switch the mode of the display (205) from the processor (220) at a timing (760). In example (751), the received command may instruct to switch the mode of the display (205) from the first mode to the second mode. In example (752), the received command may instruct to switch the mode of the display (205) from the second mode to the first mode.

[0197] For example, the processor (220) may transmit the command to the display driving IC (230) based on identifying an event. For example, specific examples of the event are described in FIGS. 8A to 8C below.

[0198] Referring to example (751), the display driver IC (230) may begin to gradually change at least some of the first parameters or the second parameters at timing (305) after a first time interval (761) from timing (760) to change the mode of the display (205) from the first mode to the second mode. The timing (305) of FIG. 7B may correspond to the timing (305) illustrated in example (300) of FIG. 3. For example, the display driver IC (230) may perform a gradual change of the clock frequency (110) from the first clock frequency (110-1) to the second clock frequency (110-2) at timing (305) after a first time interval (761) from timing (760) as described in example (300) of FIG. 3. In other words, a gradual change from the first clock frequency (110-1) to the second clock frequency (110-2) may be initiated at the timing (305) after the first time interval (761) from the timing (760). For example, the display driver IC (230) may perform a gradual change from the voltage level (531-1) to the voltage level (531-2) of the VLIN (131) as described in the example (500) of FIG. 5, from the timing (305) after the first time interval (761) from the timing (760). In other words, a gradual change from the voltage level (531-1) to the voltage level (531-2) of the VLIN (131) may be initiated at the timing (305) after the first time interval (761) from the timing (760).

[0199] Alternatively, referring to example (752), the display driver IC (230) may begin to gradually change at least some of the first parameters or the second parameters at timing (705) after a second time interval (762) from timing (760) to change the mode of the display (205) from the second mode to the first mode. For example, the display driver IC (230) may perform a gradual change of the clock frequency (110) from the second clock frequency (110-2) to the first clock frequency (110-1) as described in example (700) of FIG. 7A at timing (705) after a second time interval (762) from timing (760). In other words, a gradual change from the second clock frequency (110-2) to the first clock frequency (110-1) may be initiated at the timing (705) after the second time interval (762) from the timing (760). For example, the display driver IC (230) may perform a gradual change from the voltage level (531-2) of the VLIN (131) to the voltage level (531-1) as described in the example (500) of FIG. 5, from the timing (705) after the second time interval (762) from the timing (760). In other words, a gradual change from the voltage level (531-2) to the voltage level (531-1) of the VLIN (131) may be initiated at the timing (705) after the second time interval (762) from the timing (760).

[0200] For example, the display driving IC (230) can set the first time interval (761) as a time interval for changing a parameter in order to change the mode of the display (205) from the first mode to the second mode. For example, the display driving IC (230) can set the second time interval (762) as a time interval for changing a parameter in order to change the mode of the display (205) from the second mode to the first mode.

[0201] Referring to FIG. 7B, when the mode of the display (205) is changed from the second mode to the first mode, the gradual change of parameters may be started relatively closer to the timing (760) of receiving a command indicating a change (or transition) of the mode than when the mode of the display (205) is changed from the first mode to the second mode. This may be because the magnitude (or absolute value) of the voltages within the second mode for low power consumption is smaller than the magnitude of the voltages required within the first mode. Conversely, because the magnitude (or absolute value) of the voltages within the first mode is relatively higher than the magnitude of the voltages required within the second mode, even if the gradual change of parameters is started relatively more slowly, no driving problem (e.g., flickering) may occur. In order to eliminate the difference in voltage magnitude between modes as described above, when each of the voltages is maintained in the transition between modes, as in the example (300) of FIG. 3 and the example (700) of FIG. 7a, the maintained voltage level can be set to the voltage required in the second mode (or the first mode).

[0202] Figures 8a to 8c illustrate examples of events that generate a command to change the display from a first mode to a second mode for low power consumption.

[0203] FIGS. 8A to 8C illustrate examples (800, 830, 860) of events that generate a command instructing the electronic device (200) (or processor (220)) to change the mode of the display (205) from the first mode to the second mode.

[0204] Referring to FIG. 8a, an example (800) is illustrated in which an electronic device (200) displays a lock screen (810) on a display panel (210) and then displays an AOD screen (820) on the display panel (210) based on obtaining an input (815).

[0205] Referring to example (800), the electronic device (200) (or display driving IC (230)) may display a lock screen (810) on the display panel (210). For example, the lock screen (810) may be referred to as an image representing the lock screen (810). For example, the lock screen (810) may include a background image, a visual object representing a clock, a widget, and an icon for executing a software application. In one example, the lock screen (810) may include an icon for unlocking.

[0206] For example, the electronic device (200) (or the display driving IC (230)) may display an AOD screen (820) changed from the lock screen (810) on the display panel (210) based on obtaining an input (815) while displaying the lock screen (810). For example, the input (815) may include an input to a physical button arranged on the exterior of the electronic device (200). However, the present disclosure is not limited thereto. For example, the electronic device (200) (or the display driving IC (230)) may display an AOD screen (820) changed from the lock screen (810) on the display panel (210) when a reference time has elapsed from the time when the lock screen (810) is started to be displayed.

[0207] For example, the electronic device (200) (or the display driving IC (230)) can switch the mode of the display (205) from the first mode to the second mode before displaying the AOD screen (820). For example, the electronic device (200) (or the processor (220)) can identify the event based on obtaining an input (815) for displaying the AOD screen (820). For example, the electronic device (200) (or the processor (220)) can generate a command for changing the mode of the display (205) from the first mode to the second mode based on identifying the event, and transmit the command to the display driving IC (230). For example, the electronic device (200) (or the display driving IC (230)) can display the AOD screen (820) within the second mode of the display (205).

[0208] Referring to FIG. 8b, an example (830) is shown in which an electronic device (200) displays a still image (840, 850) on a display panel (210).

[0209] Referring to example (830), the electronic device (200) (or display driving IC (230)) can display an image (840) on the display panel (210) within a time period (831). Also, for example, the electronic device (200) (or display driving IC (230)) can display an image (850) on the display panel (210) within a time period (832) extending from the time period (831). In example (830) of FIG. 8B, the image (850) can represent an image that is completely identical to the image (840). However, the present disclosure is not limited thereto. For example, the image (850) may be partially different from the image (840).

[0210] For example, the electronic device (200) (or the display driving IC (230)) can identify a difference between the image (850) and the image (840) before displaying the image (850) (or before the time period (832) begins). For example, the electronic device (200) (or the display driving IC (230)) can switch the mode of the display (205) from the first mode to the second mode before displaying the image (850) based on identifying that the difference is less than a reference difference. For example, the electronic device (200) (or the processor (220)) can identify the event based on identifying that the difference is less than a reference difference. For example, the electronic device (200) (or the processor (220)) may generate a command to change the mode of the display (205) from the first mode to the second mode based on identifying the event, and transmit the command to the display driving IC (230). For example, the electronic device (200) (or the display driving IC (230)) may display an image (850) within the second mode of the display (205).

[0211] Referring to FIG. 8c, an example (860) is illustrated in which an electronic device (200) identifies that a touch input has been stopped on a display panel (210).

[0212] Referring to example (860), the electronic device (200) (or the display driving IC (230)) can display an image (870) on the display panel (210). For example, the electronic device (200) (or the display driving IC (230) or the processor (220)) can acquire (or detect, identify) a touch input (871) while displaying the image (870) on the display panel (210). For example, the touch input (871) can include a drag input, an input having a contact point, or a hovering input. However, the present disclosure is not limited thereto. For example, the electronic device (200) (or the display driving IC (230)) can display an image (880) changed from the image (870) on the display panel (210) according to the touch input (871).

[0213] For example, the electronic device (200) (or the display driving IC (230) or the processor (220)) can identify the end (881) of the touch input (871) while displaying the image (880) on the display panel (210). For example, if the touch input (871) is a drag input, the electronic device (200) (or the display driving IC (230) or the processor (220)) can identify the end (881) of the touch input (871) indicating that an external object (e.g., a user's finger) causing the drag input has moved away from the display panel (210). Referring to example (860), the electronic device (200) (or the display driving IC (230) or the processor (220)) can identify the end (881) at timing (861).

[0214] For example, the electronic device (200) (or the display driving IC (230)) can, based on identifying that a reference time (862) has expired from the identified timing (861) at which the end (881) is identified, switch the mode of the display (205) from the first mode to the second mode before displaying the image (890). For example, the electronic device (200) (or the processor (220)) can identify the event based on identifying that a reference time (862) has expired from the timing (861). For example, the electronic device (200) (or the processor (220)) can, based on identifying the event, generate a command to change the mode of the display (205) from the first mode to the second mode, and transmit the command to the display driving IC (230). For example, the electronic device (200) (or display driving IC (230)) can display an image (890) at timing (863) within the second mode of the display (205).

[0215] In examples (800, 830, 860) of FIGS. 8A to 8C, examples of generating and transmitting the command for changing the mode of the display (205) from the first mode to the second mode are illustrated, but the present disclosure is not limited thereto. The contents of FIGS. 8A to 8C can also be applied to cases of generating and transmitting the command for changing the mode of the display (205) from the second mode to the first mode.

[0216] The electronic device (200) according to the present disclosure can gradually change at least some of the first parameters and the second parameters over (or within) a period of time in order to reduce flickering that may be visible on the display panel (210) when the mode of the display (205) is switched. In addition, the electronic device (200) according to the present disclosure can refrain from changing at least some of the first parameters and the second parameters. Accordingly, the electronic device (200) according to the present disclosure can reduce flickering that occurs on the display panel (210) and smoothly switch the mode of the display (205). In addition, the electronic device (200) can reduce power consumption in the second mode for low power consumption that is smoothly switched from the first mode, and increase the usage time (or DoU (day of usage)) of the electronic device (200).

[0217] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains from the description below.

[0218] FIG. 9 is a block diagram of an electronic device within a network environment according to various embodiments.

[0219] Referring to FIG. 9, in a network environment (900), an electronic device (901) may communicate with an electronic device (902) via a first network (998) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (904) or a server (908) via a second network (999) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (901) may communicate with the electronic device (904) via the server (908). According to one embodiment, the electronic device (901) may include a processor (920), a memory (930), an input module (950), an audio output module (955), a display module (960), an audio module (970), a sensor module (976), an interface (977), a connection terminal (978), a haptic module (979), a camera module (980), a power management module (988), a battery (989), a communication module (990), a subscriber identification module (996), or an antenna module (997). In some embodiments, the electronic device (901) may omit at least one of these components (e.g., the connection terminal (978)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (976), the camera module (980), or the antenna module (997)) may be integrated into one component (e.g., the display module (960)).

[0220] The processor (920) may control at least one other component (e.g., a hardware or software component) of the electronic device (901) connected to the processor (920) by executing, for example, software (e.g., a program (940)), and may perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculation, the processor (920) may store a command or data received from another component (e.g., a sensor module (976) or a communication module (990)) in a volatile memory (932), process the command or data stored in the volatile memory (932), and store the resulting data in a non-volatile memory (934). According to one embodiment, the processor (920) may include a main processor (921) (e.g., a central processing unit or an application processor) or a secondary processor (923) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together therewith. For example, if the electronic device (901) includes a main processor (921) and a secondary processor (923), the secondary processor (923) may be configured to use less power than the main processor (921) or to be specialized for a given function. The secondary processor (923) may be implemented separately from the main processor (921) or as a part thereof.

[0221] The auxiliary processor (923) may control at least a portion of functions or states associated with at least one component (e.g., a display module (960), a sensor module (976), or a communication module (990)) of the electronic device (901), for example, on behalf of the main processor (921) while the main processor (921) is in an inactive (e.g., sleep) state, or together with the main processor (921) while the main processor (921) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (923) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (980) or a communication module (990)). In one embodiment, the auxiliary processor (923) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (901) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (908)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0222] The memory (930) can store various data used by at least one component (e.g., the processor (920) or the sensor module (976)) of the electronic device (901). The data can include, for example, software (e.g., the program (940)) and input data or output data for commands related thereto. The memory (930) can include a volatile memory (932) or a non-volatile memory (934).

[0223] The program (940) may be stored as software in the memory (930) and may include, for example, an operating system (942), middleware (944), or an application (946).

[0224] The input module (950) can receive commands or data to be used in a component of the electronic device (901) (e.g., a processor (920)) from an external source (e.g., a user) of the electronic device (901). The input module (950) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0225] The audio output module (955) can output audio signals to the outside of the electronic device (901). The audio output module (955) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0226] The display module (960) can visually provide information to an external party (e.g., a user) of the electronic device (901). The display module (960) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (960) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0227] The audio module (970) can convert sound into an electrical signal, or vice versa. According to one embodiment, the audio module (970) can acquire sound through the input module (950), output sound through the sound output module (955), or an external electronic device (e.g., electronic device (902)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (901).

[0228] The sensor module (976) can detect the operating status (e.g., power or temperature) of the electronic device (901) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (976) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0229] The interface (977) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (901) with an external electronic device (e.g., the electronic device (902)). In one embodiment, the interface (977) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0230] The connection terminal (978) may include a connector through which the electronic device (901) may be physically connected to an external electronic device (e.g., the electronic device (902)). According to one embodiment, the connection terminal (978) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0231] The haptic module (979) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (979) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0232] The camera module (980) can capture still images and videos. According to one embodiment, the camera module (980) may include one or more lenses, image sensors, image signal processors, or flashes.

[0233] The power management module (988) can manage power supplied to the electronic device (901). According to one embodiment, the power management module (988) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0234] A battery (989) may power at least one component of the electronic device (901). In one embodiment, the battery (989) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0235] The communication module (990) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (901) and an external electronic device (e.g., electronic device (902), electronic device (904), or server (908)), and the performance of communication through the established communication channel. The communication module (990) may operate independently from the processor (920) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (990) may include a wireless communication module (992) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (994) (e.g., a local area network (LAN) communication module, or a power line communication module). Any of these communication modules may communicate with an external electronic device (904) via a first network (998) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (999) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (992) may use subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (996) to identify or authenticate the electronic device (901) within a communication network such as the first network (998) or the second network (999).

[0236] The wireless communication module (992) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency communications (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (992) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (992) can support various technologies for securing performance in high-frequency bands, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (992) can support various requirements specified in the electronic device (901), an external electronic device (e.g., the electronic device (904)), or a network system (e.g., the second network (999)). According to one embodiment, the wireless communication module (992) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL) each, or 1 ms or less for round trip) for URLLC realization.

[0237] The antenna module (997) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (997) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (997) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (998) or the second network (999), may be selected from the plurality of antennas by, for example, the communication module (990). A signal or power may be transmitted or received between the communication module (990) and the external electronic device through the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (997).

[0238] According to various embodiments, the antenna module (997) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band.

[0239] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0240] According to one embodiment, commands or data may be transmitted or received between the electronic device (901) and an external electronic device (904) via a server (908) connected to a second network (999). Each of the external electronic devices (902 or 104) may be the same or a different type of device as the electronic device (901). According to one embodiment, all or part of the operations executed in the electronic device (901) may be executed in one or more of the external electronic devices (902, 104, or 108). For example, when the electronic device (901) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (901) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (901). The electronic device (901) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (901) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (904) may include an Internet of Things (IoT) device. The server (908) may be an intelligent server using machine learning and / or a neural network. According to one embodiment, the external electronic device (904) or the server (908) may be included in the second network (999).The electronic device (901) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0241] FIG. 10 is a block diagram of a display module according to various embodiments.

[0242] Referring to FIG. 10, the display module (960) may include a display panel (1010) and a display driver IC (DDI) (1030) for controlling the same. The DDI (1030) may include an interface module (1031), a memory (1033) (e.g., a buffer memory), an image processing module (1035), or a mapping module (1037). The DDI (1030) may receive, for example, image information including image data or an image control signal corresponding to a command for controlling the image data, from another component of the electronic device (901) through the interface module (1031). For example, according to one embodiment, image information may be received from a processor (920) (e.g., a main processor (921) (e.g., an application processor) or an auxiliary processor (923) (e.g., a graphics processing unit) that operates independently of the function of the main processor (921). The DDI (1030) may communicate with a touch circuit (1050) or a sensor module (976) through the interface module (1031). In addition, the DDI (1030) may store at least a part of the received image information in the memory (1033), for example, in units of frames. The image processing module (1035) may, for example, perform preprocessing or postprocessing (e.g., resolution, brightness, or size adjustment) on at least a part of the image data based at least on the characteristics of the image data or the characteristics of the display panel (1010). The mapping module (1037) may generate a voltage value or a current value corresponding to the image data that has been preprocessed or postprocessed through the image processing module (1035). According to one embodiment, the generation of voltage values ​​or current values ​​may be performed at least in part based on properties of pixels of the display panel (1010), for example, the arrangement of pixels (RGB stripe or pentile structure), or the size of each sub-pixel.At least some pixels of the display panel (1010) may be driven based at least in part on, for example, the voltage value or current value, so that visual information (e.g., text, an image, or an icon) corresponding to the image data may be displayed through the display panel (1010).

[0243] According to one embodiment, the display module (960) may further include a touch circuit (1050). The touch circuit (1050) may include a touch sensor (1051) and a touch sensor IC (1053) for controlling the same. The touch sensor IC (1053) may control the touch sensor (1051) to detect, for example, a touch input or a hovering input for a specific location of the display panel (1010). For example, the touch sensor IC (1053) may detect a touch input or a hovering input by measuring a change in a signal (e.g., voltage, light quantity, resistance, or charge quantity) for a specific location of the display panel (1010). The touch sensor IC (1053) may provide information (e.g., location, area, pressure, or time) regarding the detected touch input or hovering input to the processor (920). According to one embodiment, at least a portion of the touch circuit (1050) (e.g., touch sensor IC (1053)) may be included as part of the display driver IC (1030), or as part of the display panel (1010), or as part of another component (e.g., auxiliary processor (923)) disposed external to the display module (960).

[0244] According to one embodiment, the display module (960) may further include at least one sensor (e.g., a fingerprint sensor, an iris sensor, a pressure sensor, or an illuminance sensor) of the sensor module (976), or a control circuit therefor. In this case, the at least one sensor or the control circuit therefor may be embedded in a part of the display module (960) (e.g., the display panel (1010) or the DDI (1030)) or a part of the touch circuit (1050). For example, when the sensor module (976) embedded in the display module (960) includes a biometric sensor (e.g., a fingerprint sensor), the biometric sensor may obtain biometric information (e.g., a fingerprint image) associated with a touch input through a part of the display panel (1010). For another example, when the sensor module (976) embedded in the display module (960) includes a pressure sensor, the pressure sensor can obtain pressure information associated with a touch input through a part or the entire area of ​​the display panel (1010). According to one embodiment, the touch sensor (1051) or the sensor module (976) can be placed between pixels of a pixel layer of the display panel (1010), or above or below the pixel layer.

[0245] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by a person having ordinary knowledge in the technical field to which the present disclosure pertains.

[0246] As described above, the electronic device (200) may include a display (205) including a display driving IC (230) (integrated circuitry) and a display panel (210). The display driving IC (230) may be configured to display an image on the display panel (210) at a first refresh rate higher than a reference refresh rate, based on a first clock frequency, within a first mode of the display (205). The display driving IC (230) may be configured to gradually change the first refresh rate to a second refresh rate lower than the reference refresh rate, and to gradually change the first clock frequency to a second clock frequency lower than the first clock frequency, to change a mode of the display (205) from the first mode of the display (205) to a second mode of the display (205) for lower power consumption than the first mode of the display (205). The gradual change from the first playback rate to the second playback rate and the gradual change from the first clock frequency to the second clock frequency can be synchronized with each other.

[0247] According to one embodiment, the display driving IC (230) may be configured to gradually change the first refresh rate to the second refresh rate by gradually changing the first clock frequency to the second clock frequency in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205).

[0248] According to one embodiment, the electronic device (200) may include a power management integrated circuit (PMIC) (240). The display driving IC (230) may be configured to refrain from changing a voltage level of a positive basis voltage obtained from the PMIC (240) in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), and to refrain from changing a voltage level of a negative basis voltage according to the positive basis voltage.

[0249] According to one embodiment, the electronic device (200) may include a gate driver circuit (239). The display driving IC (230) may be configured to refrain from changing a voltage level of a first driving voltage for driving the gate driver circuit (239) in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), and to refrain from changing a voltage level of a second driving voltage lower than the first driving voltage for driving the gate driver circuit (239).

[0250] According to one embodiment, the display panel (210) may include pixels. Each of the pixels may include sub-pixels. Each of the sub-pixels may include: a light-emitting element; a storage capacitor configured to store a data voltage; and a transistor (251) including a gate electrode electrically connected to the storage capacitor, a source electrode, and a drain electrode electrically connectable to an anode electrode of the light-emitting element, and configured to generate a current to be provided to the light-emitting element according to the data voltage stored in the storage capacitor. The display driving IC (230) may be configured to refrain from changing the voltage level of the first initialization voltage for initializing the gate electrode of the transistor (251) in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), and to refrain from changing the voltage level of the second initialization voltage for initializing the anode electrode of the light-emitting element.

[0251] According to one embodiment, the display driving IC (230) may be configured to refrain from changing the voltage level of the third driving voltage to be provided to each of the sub-pixels, and to refrain from changing the voltage level of the fourth driving voltage to be provided to each of the sub-pixels, in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205).

[0252] In one embodiment, the positive base voltage may be used to generate each of the negative base voltage and the first driving voltage. The negative base voltage may be used to generate the second driving voltage, the first initialization voltage, and the second initialization voltage.

[0253] According to one embodiment, the display panel (210) may include pixels. Each of the pixels may include sub-pixels. The display driving IC (230) may be configured to refrain from changing a brightness value of the display panel (210) and to refrain from changing a duty of emitting light of each of the sub-pixels of the display panel (210) in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205).

[0254] According to one embodiment, the display driving IC (230) may be configured to display the image on the display panel (210) based on a first gamma value for representing gradation and luminance within the first mode of the display (205). The display driving IC (230) may be configured to gradually change the first gamma value to a second gamma value that is different from the first gamma value and for representing the gradation and the luminance, in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205).

[0255] In one embodiment, the first clock frequency may be gradually changed to the second clock frequency within a time period. The first refresh rate may be gradually changed to the second refresh rate within the time period. The time period may include a plurality of time periods of a plurality of vertical synchronization signals.

[0256] According to one embodiment, the display driving IC (230) may be configured to set the time period to a first time period according to a brightness parameter having a first value. The display driving IC (230) may be configured to set the time period to a second time period longer than the first time period according to the brightness parameter having a second value lower than the first value. The brightness parameter may include at least one of illuminance outside the electronic device (200) or luminance of the display panel (210).

[0257] According to one embodiment, the display driving IC (230) may be configured to identify a size of an image to be displayed on the display panel (210). The display driving IC (230) may be configured to set the time period to a first time period according to the size having a first size. The display driving IC (230) may be configured to set the time period to a second time period longer than the first time period according to the size having a second size larger than the first size.

[0258] According to one embodiment, the electronic device (200) may include at least one processor (220) including a processing circuit. The display driving IC (230) may be configured to receive, from the at least one processor (220), a command instructing to change the mode of the display (205) from the first mode to the second mode. The display driving IC (230) may be configured to change the mode of the display (205) from the first mode to the second mode by gradually changing the first refresh rate to the second refresh rate and gradually changing the first clock frequency to the second clock frequency based on receiving the command.

[0259] According to one embodiment, the at least one processor (220) may be configured to identify an event for changing the mode of the display (205). The at least one processor (220) may be configured to transmit, based on the identification of the event, the command to the display driving IC (230) for instructing to change the mode of the display (205) from the first mode to the second mode. The event may include at least one of: obtaining an input for displaying an AOD (always on display) screen; identifying that a difference between the image displayed on the display panel (210) and another image to be displayed on the display panel (210) is less than a reference difference; or identifying that a reference time has expired from a timing at which a touch input obtained through the display panel (210) is terminated.

[0260] According to one embodiment, the electronic device (200) may include a power management integrated circuitry (PMIC) (240). The display driving IC (230) may be configured to gradually change a voltage level of a positive basis voltage obtained from the PMIC from a first voltage level to a second voltage level lower than the first voltage level, and to gradually change a voltage level of a negative basis voltage according to the positive basis voltage from a third voltage level to a fourth voltage level higher than the third voltage level, in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205).

[0261] According to one embodiment, the electronic device (200) may include a gate driver circuit (239). The display driving IC (230) may be configured to gradually change a voltage level of a first driving voltage for driving the gate driver circuit (239) from a fifth voltage level to a sixth voltage level lower than the fifth voltage level, and to gradually change a voltage level of a second driving voltage for driving the gate driver circuit (239) from a seventh voltage level to an eighth voltage level higher than the seventh voltage level, in order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205).

[0262] According to one embodiment, the voltage level of the positive base voltage may be gradually changed from the first voltage level to the second voltage level within a first time period. The voltage level of the first driving voltage may be gradually changed from the fifth voltage level to the sixth voltage level within a second time period different from the first time period.

[0263] According to one embodiment, the display driving IC (230) may be configured to display an image on the display panel (210) according to the second refresh rate based on the second clock frequency within the second mode of the display (205). The display driving IC (230) may be configured to gradually change the second refresh rate to the first refresh rate and to gradually change the second clock frequency to the first clock frequency in order to change the mode of the display (205) from the second mode of the display (205) to the first mode of the display (205). The gradual change from the second refresh rate to the first refresh rate and the gradual change from the second clock frequency to the first clock frequency may be synchronized with each other.

[0264] According to one embodiment, the electronic device (200) may include at least one processor (220) including a processing circuit. The display driving IC (230) may be configured to receive, from the at least one processor (220), a command instructing to change the mode of the display (205) from the first mode to the second mode. The display driving IC (230) may be configured to perform the gradual change from the first clock frequency to the second clock frequency after a first time interval from the timing at which the command is received. The display driving IC (230) may be configured to receive, from the at least one processor (220), another command instructing to change the mode of the display (205) from the second mode to the first mode. The display driving IC (230) may be configured to perform the gradual change of the second clock frequency to the first clock frequency after a second time interval shorter than the first time interval from the other timing at which the other command is received.

[0265] As described above, the electronic device (200) may include a display (205) including a display driving IC (230) (integrated circuitry) and a display panel (210). The display driving IC (230) may be configured to display an image on the display panel (210) at a first refresh rate higher than a reference refresh rate, based on a first clock frequency, within a first mode of the display (205). The display driving IC (230) may be configured to gradually change the first refresh rate to a second refresh rate lower than the reference refresh rate by gradually changing the first clock frequency to a second clock frequency lower than the first clock frequency, so as to change the mode of the display (205) from the first mode of the display (205) to a second mode of the display (205) for lower power consumption than the first mode of the display (205).

[0266] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0267] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0268] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0269] Various embodiments of the present document may be implemented as software (e.g., a program (940)) including one or more instructions stored in a storage medium (e.g., an internal memory (936) or an external memory (938)) readable by a machine (e.g., an electronic device (901)). For example, a processor (e.g., a processor (920)) of the machine (e.g., an electronic device (901)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0270] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0271] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In an electronic device (200), A display (205) including a display driving IC (230) (integrated circuitry) and a display panel (210), The above display driving IC (230): In the first mode of the display (205), an image is displayed on the display panel (210) at a first refresh rate higher than a reference refresh rate based on a first clock frequency; and To change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205) for lower power consumption than the first mode of the display (205): Gradually changing the first playback rate to a second playback rate lower than the reference playback rate, and configured to gradually change the first clock frequency to a second clock frequency lower than the first clock frequency, The gradual change from the first refresh rate to the second refresh rate and the gradual change from the first clock frequency to the second clock frequency are synchronized with each other. Electronic device (200).

2. In claim 1, The above display driving IC (230): In order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), the first clock frequency is gradually changed to the second clock frequency, thereby gradually changing the first refresh rate to the second refresh rate. Electronic device (200).

3. In claim 1, The above electronic device (200) includes a PMIC (power management integrated circuitry) (240), The above display driving IC (230): To change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205): Refrain from changing the voltage level of the positive basis voltage obtained from the above PMIC (240), and configured to refrain from changing the voltage level of the negative base voltage according to the above positive base voltage, Electronic device (200).

4. In claim 3, The above electronic device (200) includes a gate driver circuit (239), The above display driving IC (230): In order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), the voltage level of the first driving voltage for driving the gate driver circuit (239) is refrained from changing, and the voltage level of the second driving voltage lower than the first driving voltage for driving the gate driver circuit (239) is refrained from changing. Electronic device (200).

5. In claim 4, The above display panel (210) includes pixels, Each of the above pixels includes sub-pixels, and Each of the above sub-pixels: light emitting element; a storage capacitor configured to store a data voltage; and A transistor (251) comprising a gate electrode electrically connected to the storage capacitor, a source electrode, and a drain electrode electrically connectable to the anode electrode of the light-emitting element, and configured to generate a current to be provided to the light-emitting element according to the data voltage stored in the storage capacitor, The above display driving IC (230): In order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), the voltage level of the first initialization voltage for initializing the gate electrode of the transistor (251) is refrained from changing, and the voltage level of the second initialization voltage for initializing the anode electrode of the light-emitting element is refrained from changing. Electronic device (200).

6. In claim 5, The above display driving IC (230): In order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), the voltage level of the third driving voltage to be provided to each of the sub-pixels is refrained from changing, and the voltage level of the fourth driving voltage to be provided to each of the sub-pixels is refrained from changing. Electronic device (200).

7. In claim 6, The positive base voltage is used to generate the negative base voltage and the first driving voltage, respectively, and The negative base voltage is used to generate the second driving voltage, the first initialization voltage, and the second initialization voltage. Electronic device (200).

8. In claim 1, The above display panel (210) includes pixels, Each of the above pixels contains sub-pixels, The above display driving IC (230): To change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205): Refrain from changing the brightness value of the above display panel (210), and It is configured to refrain from changing the duty of emitting light of each of the light emitting elements of the sub-pixels of the display panel (210). Electronic device (200).

9. In claim 8, The above display driving IC (230): In the first mode of the display (205), displaying the image on the display panel (210) based on a first gamma value for indicating gradation and brightness; and In order to change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205), the first gamma value is configured to be gradually changed to a second gamma value that is different from the first gamma value and represents the gradation and the luminance. Electronic device (200).

10. In claim 1, The first clock frequency is gradually changed to the second clock frequency within a time period, The first reproduction rate is gradually changed to the second reproduction rate within the time period, and The above time period includes a plurality of time periods of a plurality of vertical synchronization signals, Electronic device (200).

11. In claim 10, The above display driving IC (230): According to the brightness parameter having the first value, the time period is set to the first time period; and configured to set the time period to a second time period longer than the first time period, according to the brightness parameter having a second value lower than the first value; The brightness parameter includes at least one of the illuminance outside the electronic device (200) or the luminance of the display panel (210). Electronic devices (200) 12. In claim 10, The above display driving IC (230): Identify the size of the image to be displayed on the above display panel (210); According to the above size having the first size, the time period is set as the first time period; and According to the size having a second size larger than the first size, the time period is configured to be set to a second time period longer than the first time period. Electronic device (200).

13. In claim 1, The electronic device (200) comprises at least one processor (220) including a processing circuit, The above display driving IC (230): Receiving a command from at least one processor (220) that instructs to change the mode of the display (205) from the first mode to the second mode; and Based on receiving the command, the mode of the display (205) is configured to be changed from the first mode to the second mode by gradually changing the first refresh rate to the second refresh rate and gradually changing the first clock frequency to the second clock frequency. Electronic device (200).

14. In claim 13, At least one processor (220) above: Identifying an event for changing the mode of the above display (205); and Based on identifying the above event, the command is configured to be transmitted to the display driving IC (230) to instruct the display (205) to change the mode from the first mode to the second mode, The above event: Obtaining input to display the AOD (always on display) screen, Identifying that the difference between the image displayed on the display panel (210) and another image to be displayed on the display panel (210) is less than a reference difference, or At least one of identifying that a reference time has expired from the timing at which a touch input obtained through the display panel (210) is terminated, Electronic device (200).

15. In claim 1, The above electronic device (200) includes a PMIC (power management integrated circuitry) (240), The above display driving IC (230): To change the mode of the display (205) from the first mode of the display (205) to the second mode of the display (205): Gradually changing the voltage level of the positive basis voltage obtained from the PMIC from a first voltage level to a second voltage level lower than the first voltage level, and It is configured to gradually change the voltage level of the negative base voltage according to the positive base voltage from a third voltage level to a fourth voltage level higher than the third voltage level. Electronic device (200).

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