Display driving method and electronic device supporting the method

Abstract

In an embodiment disclosed in this document, an electronic device includes: a display panel; and a display driver integrated circuit configured to drive the display panel. The display driver integrated circuit may be configured to: when receiving a request to change from a current driving frequency of the display panel to a target driving frequency, identify a brightness value of the display panel, and determine at least one intermediate driving frequency between the current driving frequency and the target driving frequency according to the brightness value of the display panel. It is possible to identify various other embodiments through this specification.

Description

Technical Field

[0001] The present disclosure relates to operating a display, and more particularly, to a driving method of a display capable of maintaining optical characteristics of a display panel while changing a driving speed of the display panel, and an electronic device supporting the method. Background Art

[0002] The electronic device includes a display panel for displaying information. Various contents can be displayed on the display panel in a complex manner. The driving speed of the display panel may change due to changes in content or other reasons. When the driving speed of the self-luminous display panel changes, the optical characteristics may change. Summary of the invention

[0003] Technical issues

[0004] If the optical characteristics of the display panel change according to the driving speed of the display panel, the change in the optical characteristics may be recognized by the user as flicker or screen error.

[0005] The above information is provided as background information only to assist with understanding the present disclosure.

[0006] No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with respect to the present disclosure.

[0007] Aspects of the present disclosure are to address at least the above-mentioned problems and / or disadvantages and provide at least the advantages described below.

[0008] Accordingly, an aspect of the present disclosure is to provide a driving method of a display capable of maintaining optical characteristics of a display panel while changing a driving speed of the display panel, and an electronic device supporting the same.

[0009] Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments.

[0010] Technical Solution

[0011] According to one aspect of the present invention, an electronic device is provided. The electronic device includes a display panel and a display driver integrated circuit configured to drive the display panel. The display driver integrated circuit is configured to: if a request for changing from a current driving frequency of the display panel to a target driving frequency is received, determine a brightness value of the display panel, and determine at least one intermediate driving frequency between the current driving frequency and the target driving frequency according to the brightness value of the display panel.

[0012] According to another aspect of the present invention, a driving method for a display is provided. The driving method for a display includes: receiving, by a display driver integrated circuit, a request for changing from a current driving frequency of a display panel to a target driving frequency, determining, by the display driver integrated circuit, a brightness value of the display panel, and determining, by the display driver integrated circuit, at least one intermediate driving frequency between the current driving frequency and the target driving frequency according to the brightness value of the display panel.

[0013] Beneficial technical effects

[0014] Through various embodiments of the present disclosure, even if the driving speed of the display panel changes, by maintaining the optical characteristics of the display panel, the user can view the screen without any erroneous recognition.

[0015] Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent through the following description in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a diagram schematically showing a configuration of an electronic device according to an embodiment of the present disclosure;

[0018] Figure 2 is a diagram illustrating a method of driving a display according to an embodiment of the present disclosure;

[0019] Figure 3 FIG. 2 is a diagram showing a method for driving a display according to an embodiment of the present disclosure. Figure 2 An illustration of operation 207 of ;

[0020] Figure 4 is a diagram illustrating a display driving method according to an embodiment of the present disclosure;

[0021] Figure 5 is a diagram showing an adjustment coefficient of an intermediate frequency for each brightness value in a display driving method according to an embodiment of the present disclosure;

[0022] Figure 6 is a diagram showing a light emission cycle of adjusting an intermediate frequency of each brightness value in a display driving method according to an embodiment of the present disclosure;

[0023] Figure 7is a diagram showing setting of a vertical front porch (VFP), a light emission cycle, and an active matrix organic light emitting diode (AMOLED) off ratio (AOR) in a display driving method according to an embodiment of the present disclosure;

[0024] Figure 8 is a diagram illustrating setting of a gamma correction table in a display driving method according to an embodiment of the present disclosure;

[0025] Fig. 9 is a diagram showing a setting according to a driving frequency change direction in a display driving method according to an embodiment of the present disclosure;

[0026] Fig.10 is a diagram illustrating setting a driving frequency according to application of a range value in a display driving method according to an embodiment of the present disclosure; and

[0027] Fig.11 is a block diagram illustrating an electronic device 1101 in a network environment 1100 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of certain embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in understanding, but these are to be regarded as examples only. Therefore, it will be appreciated by those of ordinary skill in the art that various changes and modifications may be made to the specific embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and configurations may be omitted for clarity and brevity.

[0029] As used herein, terms and phrases such as “have”, “may have”, “include” or “may include” indicate the presence of features (eg, number, function, action or component such as a component) and do not preclude the presence of additional functions.

[0030] As used herein, the phrases "A or B", "at least one of A or / and B", or "one or more of A or / and B" may include all possible combinations of the items listed together. For example, "A or B", "at least one of A and B", or "at least one of A or B" may mean all of (1) including at least one A, (2) including at least one B, or (3) including at least one A and at least one B.

[0031] As used herein, terms such as "first," "second," "the first," or "the second" may modify various components, regardless of order and / or importance, and are used to distinguish one component from another, but do not limit the components. For example, a first user device and a second user device may indicate different user devices, regardless of order or importance. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, conversely, without departing from the teachings disclosed in the present disclosure.

[0032] When a component (e.g., a first component) is referred to as being "(operably or communicatively) coupled to" or "connected to" another component (e.g., a second component), it should be understood that any of the above components may be directly connected to another component, or may be connected through another component (e.g., a third component). Conversely, when a certain component (e.g., a first component) is referred to as being "directly coupled" or "directly connected" to another component (e.g., a second component), it should be understood that no other component (e.g., a third component) is interposed between the certain component and the other component.

[0033] As used herein, the phrase "configured to (or set to)" may be used interchangeably with, for example, "suitable for," "capable of," "designed to," "adapted to," "enabled to," or "capable of," as appropriate. The phrase "configured to (or set to)" does not necessarily mean only "specially designed to" in hardware. On the contrary, in some cases, the phrase "the device is configured to" may mean that the device "can" perform operations together with other devices or components. For example, the phrase "a processor configured (or set) to perform A, B, and C" may mean a dedicated processor (e.g., an embedded processor) or a general-purpose processor (e.g., a central processing unit (CPU) or an application processor) for performing the corresponding operations, which performs the operations by executing one or more software programs stored in a storage device.

[0034] The terms and phrases used herein are only used to describe specific embodiments of the present disclosure and are not intended to limit the scope of other embodiments. The singular form is intended to include the plural form unless the context clearly indicates otherwise. The terms used herein, including technical or scientific terms, may have the same meaning as those commonly understood by technicians in the field to which the embodiments of the present disclosure belong. Terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and unless clearly defined herein, will not be interpreted in an idealized or overly formal sense. In some cases, even the terms defined herein cannot be interpreted as excluding embodiments of the present disclosure.

[0035] Examples of electronic devices according to various embodiments of the present disclosure may include at least one of a smartphone, a tablet personal computer (PC), a mobile phone, a videophone, an e-book reader, a desktop PC, a laptop personal computer, a netbook computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP), a Moving Picture Experts Group (MPEG-1 or MPEG-2) Audio Layer 3 (MP3) player, a mobile medical device, a camera, or a wearable device. According to various embodiments of the present disclosure, the wearable device may include at least one of an accessory type device (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head mounted device (HMD), a textile or clothing integrated device (e.g., an electronic garment), a body attached device (e.g., a skin pad or a tattoo), or a bio-implanted device (implantable circuit).

[0036] In some embodiments of the present disclosure, the electronic device may be a household appliance. The household appliance may include, for example, a television (TV), a digital video disk (DVD) player, an audio device, a refrigerator, an air conditioner, a vacuum cleaner, an oven, a microwave oven, a washing machine, an air purifier, a set-top box, a home automation control panel, a security control panel, a TV box (e.g., Samsung HomeSync TM , Apple TV TM or Google TV TM ), game consoles (such as Xbox TM or PlayStation TM ), at least one of an electronic dictionary, an electronic key, a camera or a digital photo frame.

[0037] In an embodiment of the present disclosure, the electronic device may include at least one of various medical devices (for example, various portable medical measuring devices (such as blood glucose meters, heart rate monitors, blood pressure monitors or thermometers), magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), computed tomography (CT), imaging equipment, ultrasound machines, etc.), navigation equipment, global navigation satellite systems (GNSS), event data recorders (EDRs), flight data recorders (FDRs), vehicle infotainment equipment, ship electronic devices (for example, ship navigation equipment, gyrocompasses, etc.), avionics devices, security equipment, car hosts, household or industrial robots, automatic teller machines (ATMs) in banks, points of sale in stores, or Internet of Things devices (light bulbs, various sensors, electric or gas meters, sprinklers, fire alarms, thermostats, street lights, toasters, sporting goods, hot water tanks, heaters, boilers, etc.).

[0038] According to some embodiments of the present disclosure, the electronic device may include at least one of a part of furniture or a building / structure, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g., a water meter, an electric meter, a gas meter, or a radio wave meter, etc.). In various embodiments of the present disclosure, the electronic device may be one or a combination of two or more of the above-mentioned various devices. The electronic device according to some embodiments may be a flexible electronic device. In addition, the electronic device according to an embodiment of the present disclosure is not limited to the above-mentioned devices, and may include new electronic devices that accompany technological developments.

[0039] Hereinafter, an electronic device according to various embodiments will be described with reference to the accompanying drawings. In the present disclosure, the term user may refer to a person using an electronic device or an apparatus (eg, an artificial intelligence electronic device) using the electronic device.

[0040] Figure 1 is a diagram schematically showing a configuration of an electronic device according to an embodiment of the present invention.

[0041] Reference Figure 1 According to an embodiment of the present disclosure, the electronic device 100 may include an input unit 110, an illumination sensor 120, a first memory 130, a processor 140, a display driver integrated circuit (IC) (DDI) 200, and a display panel 160 (or display). In the electronic device 100, the illumination sensor 120 may be selectively included. According to various embodiments of the present disclosure, if the electronic device 100 supports a communication function, the electronic device 100 may further include at least one processor related to operating the communication function and at least one antenna.

[0042] The input unit 110 may receive user input and send the received user input to the processor 140. The input unit 110 may include, for example, at least one of a touch screen, a physical button, a touch pad, an electronic pen, and a voice input (e.g., a microphone). The input unit 110 may also include a camera. The user may generate a user input by making a specified gesture using the camera. According to an embodiment of the present disclosure, the input unit 110 may receive a user input related to a brightness setting change of the display panel 160. In this regard, the display panel 160 may output a user interface related to the brightness setting change. The input unit 110 may include a touch screen capable of changing the brightness setting through a user interface. According to various embodiments of the present disclosure, the input unit 110 may receive a specified user speech related to the brightness setting change input through a microphone. According to various embodiments of the present disclosure, the input unit 110 may include an illumination sensor 120. According to an embodiment of the present disclosure, the input unit 110 may also include an angle sensor (e.g., if the electronic device is a foldable electronic device, the angle sensor detects an angle corresponding to the brightness change by opening and closing), a motion sensor, a biometric sensor, and at least one of a light sensor.

[0043] The illuminance sensor 120 is provided at one side of the electronic device 100 to measure external illuminance. In this regard, the illuminance sensor 120 may be provided at the back of the electronic device 100, at one side of the front side, or below the display panel 160. The illuminance sensor 120 may transmit the measured external illuminance to the processor 140. According to various embodiments of the present disclosure, if the electronic device 100 does not include a function of measuring external illuminance, the illuminance sensor 120 may be omitted from the configuration of the electronic device 100. According to another embodiment of the present disclosure, the illuminance sensor 120 may be included in the input unit 110, and in this case, Figure 1 The illustrated illuminance sensor 120 may be regarded as a configuration of the input unit 110 .

[0044] The first memory 130 may store various data and programs related to operating the electronic device 100. For example, the first memory 130 may store an operation program related to the operation of the electronic device 100, a program related to the operation of the illuminance sensor 120, a program related to changing the brightness value of the display panel 160, and a program related to controlling the driving speed of the display panel 160. According to an embodiment of the present disclosure, the first memory 130 may store a program related to generating an intermediate driving frequency for each set brightness value of the display panel 160, and a program for performing at least one of an adjustment of a light emission cycle for each set brightness value of the display panel 160, an adjustment setting of a vertical blanking number for each set brightness value of the display panel 160, an AMOLED off ratio (AOR) for each set brightness value of the display panel 160, or a gamma correction for each set brightness value of the display panel 160. The first memory 130 may store a plurality of gamma correction tables related to the gamma correction for each brightness value. According to various embodiments of the present disclosure, the plurality of gamma correction tables may not be stored in the first memory 130, but may be stored in the second memory 210 disposed in the display driver integrated circuit 200. Alternatively, a plurality of gamma correction tables may be stored in both the first memory 130 and the second memory 210. The AOR may include any one of a time ratio when a pixel is turned off when outputting one frame to the display panel 160 and a time ratio when a pixel is turned off in one of emission cycles when outputting one frame to the display panel 160.

[0045] The processor 140 may be operably connected to the input unit 110, the illumination sensor 120, the first memory 130, and the display driver IC 200. The processor 140 may be involved in executing a program stored in the first memory 130 and may transmit data required to drive the display panel 160 to the display driver IC 200.

[0046] According to an embodiment of the present disclosure, the processor 140 may automatically control the brightness value change of the display panel 160 based on the brightness value received from the brightness sensor 120. For example, when the external brightness is less than the first brightness value (e.g., a low brightness environment), the processor 140 may change the brightness value of the display panel 160 to the first brightness value. In addition, when the external brightness is equal to or greater than the second brightness value (e.g., a high brightness environment), the processor 140 may change the brightness value of the display panel 160 to a second brightness value (e.g., a value greater than the first brightness value). According to various embodiments of the present disclosure, the processor 140 may output a user interface (UI) that allows the brightness value of the display panel 160 to be changed to the display panel 160 in response to a first user input, and may change the brightness value of the display panel 160 in response to a second user input related to the brightness value change. According to various embodiments of the present disclosure, the processor 140 may automatically change the brightness value of the display panel 160 to a specified brightness value according to the type of content requested to be executed. For example, when requesting video content or camera function execution, the processor 140 may change the brightness value of the display panel 160 to a specified second brightness value. When requesting execution of a text viewing function, the processor 140 may change the brightness value of the display panel 160 to a specified first brightness value (e.g., a value less than the second brightness value).

[0047] When requesting a change in the driving frequency of the display panel 160 (e.g., a change in the refresh rate) in a state where the brightness value of the display panel 160 is changed due to various reasons, the processor 140 may determine at least one of the number, value, or retention time of the intermediate driving frequencies (e.g., the driving frequency value requested to be changed) between the current driving frequency and the target driving frequency differently according to the size of the difference between the current brightness value of the display panel 160 and the target brightness value to be changed. For example, the processor 140 may allocate a larger number of intermediate driving frequencies as the difference in brightness value increases. In this operation, the processor 140 may perform control according to the number of allocated intermediate driving frequencies so that the intermediate driving frequency values ​​and the retention time are evenly or unevenly allocated or allocated in a linearly or nonlinearly increasing manner.

[0048] For uniform distribution, the processor 140 may evenly divide the value between the current driving frequency and the target driving frequency into the number of intermediate driving frequencies, and evenly distribute the holding time. For uneven distribution, the processor 140 may distribute relatively low (or relatively high) intermediate driving frequencies that are less (or more) in the number of intermediate driving frequencies. Alternatively, with respect to uneven distribution, the processor 140 may distribute relatively high (or low) intermediate driving frequencies that are less (or more) in the frequency values ​​to be distributed to the number of intermediate driving frequencies. With respect to linear or nonlinear increase distribution, the processor 140 may distribute intermediate frequency values ​​so that the frequency change value of the intermediate driving frequency between the current driving frequency and the target driving frequency increases (or decreases) linearly (or nonlinearly). Alternatively, the processor 140 may perform distribution so that the holding time of the intermediate driving frequency between the current driving frequency and the target driving frequency increases (or decreases) linearly (or nonlinearly).

[0049] According to various embodiments of the present disclosure, if the current driving frequency and the target driving frequency are determined, the processor 140 may determine the number of intermediate driving frequencies to be set between the current driving frequency and the target driving frequency. For the total intermediate driving frequency determined, the processor 140 may allocate relatively few smaller intermediate driving frequency values, and allocate relatively more larger intermediate driving frequency values. According to various embodiments of the present disclosure, among the values ​​of the intermediate driving frequencies, the processor 140 may allocate a shorter holding time for a relatively small value and a longer holding time for a relatively large value. Alternatively, the processor 140 may allocate a shorter holding time for a relatively small intermediate driving frequency value, and may allocate a longer holding time for a relatively large intermediate driving frequency value, according to the number of allocated intermediate driving frequencies. With respect to the above-mentioned operation control, the processor 140 may adopt at least one control method so as to maintain the optical characteristics while changing the current driving frequency to the target driving frequency according to at least one of the panel characteristics of the display panel 160 and the characteristics of the content requested to be executed.

[0050] According to various embodiments of the present disclosure, if the adjustment coefficient of the intermediate driving frequency (e.g., at least one of the number, value, or holding time of the intermediate driving frequency) is determined, the processor 140 may, in response to the determination, perform at least one of various operations related to driving the display panel 160. The various operations may include, for example, an emission cycle (e.g., adjusting a duty on or off setting to display one screen (or one frame)), adjustment of the number of vertical blankings (at least one of a vertical back porch or a vertical front porch) for each set brightness value of the display panel 160, controlling the size (e.g., duty off size) of an AMOLED off ratio (AOR) for each set brightness value of the display panel 160, or gamma correction for each set brightness value of the display panel 160.

[0051] The display panel 160 may display data through the display driver integrated circuit 200. According to an embodiment of the present disclosure, the display panel 160 may be implemented as a thin film transistor-liquid crystal display (TFT-LCD) panel, a light emitting diode (LED) display panel, an organic LED (OLED) display panel, an active matrix OLED (AMOLED) display panel, or a flexible display panel.

[0052] In the display panel 160, for example, the gate lines and the source lines may be alternately arranged in a matrix form. A gate signal may be provided to the gate lines. According to an embodiment of the present disclosure, the gate signal may be sequentially provided to the gate lines. According to various embodiments of the present disclosure, a first gate signal may be provided to odd-numbered gate lines among the gate lines, and a second gate signal may be provided to even-numbered gate lines. The first gate signal and the second gate signal may be signals provided alternately. Optionally, the first gate signal may be sequentially provided to the odd-numbered gate lines from the start line to the end line, and then the second gate signal may be sequentially provided to the even-numbered gate lines from the start line to the end line. A signal corresponding to display data may be provided to the source line. The signal corresponding to the display data may be provided from a source driver under the control of a timing controller of a logic circuit.

[0053] The display panel 160 may include a light emitting device in which a plurality of gate lines and a plurality of source lines are arranged in a matrix form and connected to a plurality of thin film transistors (TFTs). The display panel 160 may display a screen accompanying the execution of the content. In this operation, the display panel 160 may output a screen using a driving frequency according to the driving of the display driver integrated circuit 200. According to various embodiments of the present disclosure, the display panel 160 may include a first display area 161 displaying a first content and a second display area 162 displaying a second content. While the first content is displayed on the first display area 161, the screen may be displayed based on a first driving frequency (e.g., 60 Hz). When the second content is displayed on the second display area 162, the screen may be displayed on the display panel 160 (e.g., the first display area 161 and the second display area 162) based on a second driving frequency (e.g., 120 Hz). When the playback of the second content ends, the second display area 162 is removed and only the first display area 161 is retained, the driving frequency of the display panel 160 may be changed from the second driving frequency to the first driving frequency under the control of at least one of the processor or the display driver integrated circuit. According to various embodiments of the present disclosure, the second display area 162 may be output in the form of a pop-up window, may be output to one area after splitting the screen of the display panel 160 , or may be output in full screen.

[0054] According to an embodiment of the present disclosure, if the driving frequency of the display panel 160 is changed from the first driving frequency to the second driving frequency, at least one of the number, value or holding time of the intermediate driving frequencies (e.g., 70 Hz, 75 Hz, 80 Hz, 90 Hz, 100 Hz and 110 Hz) between the first driving frequency and the second driving frequency may be applied differently according to the current brightness value of the display panel 160. In addition, at least one of the light emission cycle, AOR, the size of the driving speed (e.g., 1H (horizontal) cycle, i.e., the time for one gate line to remain turned on), the number of vertical front porches (VFP), and the gamma correction table related to the screen display of the display panel 160 may be applied differently.

[0055] The display driver integrated circuit 200 may change the data sent from the processor 140 into a form that can be sent to the display panel 160, and may send the changed data to the display panel 160. The changed data (or display data) may be provided in pixel units (or sub-pixel units). Here, the pixel has a structure in which red, green, and blue (RGB) sub-pixels are arranged adjacent to each other relative to a specified color display, and one pixel may include RGB sub-pixels (RGB stripe layout structure) or RGBG sub-pixels (pentile layout structure). Here, the arrangement structure of the RGBG sub-pixels may be replaced by the arrangement structure of the RGBG sub-pixels. Alternatively, the pixel may have a red, green, blue, and white (RGBW) sub-pixel arrangement structure as an alternative.

[0056] According to an embodiment of the present disclosure, the display driver integrated circuit 200 may change the driving frequency of the display panel 160 (e.g., from 60 Hz to 120 Hz or vice versa (from 120 Hz to 60 Hz), from 60 Hz to 90 Hz or vice versa, or from 60 Hz to 30 Hz or vice versa) according to at least one of the content type requested for playback and user settings. In this operation, the display driver integrated circuit 200 may determine the brightness value of the display panel 160, and may differently determine at least one of the number, value, or holding time of the intermediate driving frequency (a frequency between the current driving frequency and the target driving frequency) according to the determined brightness value. If the adjustment coefficient of the intermediate driving frequency is determined (e.g., at least one of the number, value, or holding time), the display driver integrated circuit 200 may adjust the adjustment coefficient related to the screen display of the display panel 160 (e.g., at least one of the light emission cycle, AOR, the size of the driving speed (e.g., 1H (horizontal) cycle), the number of vertical front porches (VFP), and the gamma correction table) so that the optical characteristics of the determined intermediate driving frequency maintain the optical characteristics of the current display panel 160 (e.g., so that the brightness value of the display panel 160 is the same or similar at each driving frequency). The determination of the adjustment coefficient of the intermediate driving frequency of the display driver integrated circuit 200 and the determination of the adjustment coefficient related to the screen display at each driving frequency for maintaining the optical characteristics may be performed under the control of the processor 140, or may be performed by the logic circuit (or timing controller) of the display driver integrated circuit 200.

[0057] As described above, the electronic device 100 according to an embodiment of the present disclosure may maintain the optical characteristics of the display panel 160 by changing the driving frequency (eg, refresh rate, R / R) of the display panel 160 corresponding to the change in the brightness value.

[0058] Figure 2 is a diagram illustrating a driving method of a display according to an embodiment of the present invention.

[0059] Reference Figure 2 In the display driving method according to the embodiment of the present disclosure, in operation 201, the display driver integrated circuit 200 may turn on the display panel 160 or maintain the turned-on state of the display panel 160. In the embodiment of the present disclosure, the display driver integrated circuit 200 may perform control to output a screen accompanying the execution of a specific content or application to the display panel 160 in the turned-on state.

[0060] In operation 203, the display driver integrated circuit 200 may determine whether an event related to changing the driving frequency occurs. For example, the display driver integrated circuit 200 may receive an instruction related to changing the driving frequency from the processor 140. Alternatively, the display driver integrated circuit 200 may receive a request from the processor 140 to output a content screen that is set to operate at a driving frequency different from the driving frequency applied to the content currently displayed on the display panel 160.

[0061] If an event related to changing the driving frequency occurs, in operation 205, the display driver integrated circuit 200 may determine the brightness value of the display panel 160. For example, the display driver integrated circuit 200 may determine the current brightness value of the display panel 160 based on the signal provided to the display panel 160. According to various embodiments of the present disclosure, the display driver integrated circuit 200 may receive the current brightness setting value of the display panel 160 from the processor 140. The processor 140 may send the brightness setting value to the display driver integrated circuit 200 at a time point when the brightness setting value changes, or may send the brightness setting value to the display driver integrated circuit 200 at a time point when the driving frequency of the display panel 160 changes. Regarding the brightness setting, the processor 140 may automatically control the adjustment of the brightness setting value of the display panel 160 based on the external illumination obtained by the illumination sensor 120 and the pre-stored brightness adjustment table. Optionally, the processor 140 may output a screen interface related to the brightness setting using a user input, and may change the brightness setting value using a user input corresponding to the change in the brightness value.

[0062] In operation 207, the display driver integrated circuit 200 may determine an intermediate driving frequency according to a brightness value (or brightness setting value) of the display panel 160. For example, the display driver integrated circuit 200 may determine at least one of the number, value, and holding time of the intermediate driving frequency included in the adjustment coefficient of the intermediate driving frequency.

[0063] In operation 209, the display driver integrated circuit 200 may change the current driving frequency of the display panel 160 to the target driving frequency as the change target by using the intermediate driving frequency. In this operation, the display driver integrated circuit 200 may keep controlling the optical characteristics of the display panel 160 while changing the current driving frequency to the target driving frequency by the intermediate driving frequency.

[0064] In operation 211, the display driver integrated circuit 200 may determine whether an event related to turning off of the display panel 160 occurs. If the event related to turning off of the display panel 160 occurs, the display driver integrated circuit 200 may end driving of the display panel 160. If the event related to turning off of the display panel 160 does not exist, the process before operation 201 is forked and the display driver integrated circuit 200 may re-execute subsequent operations.

[0065] Figure 3 FIG. 1 is a diagram showing a method for driving a display according to an embodiment of the present invention. Figure 2 207 of operation 207.

[0066] Reference Figure 3 In operation 301, the display driver integrated circuit 200 may determine a brightness value of the display panel 160. For example, the display driver integrated circuit 200 may receive a brightness setting value of the display panel 160 from the processor 140. Alternatively, the display driver integrated circuit 200 may determine the brightness value based on at least some of the signals provided to the display panel 160. The processor 140 may automatically adjust the brightness value of the display panel 160 based on a brightness value adjustment table previously stored according to an external illuminance value obtained from the illuminance sensor 120. Alternatively, the processor 140 may change the brightness setting value according to a user input. Alternatively, the processor 140 may change the brightness setting value according to the type of content being executed. If the brightness setting value is changed, the processor 140 may provide the changed brightness value to the display driver integrated circuit 200. Alternatively, if the driving frequency is changed, the processor 140 may determine the brightness setting value of the display panel 160 and may provide the target driving frequency value as a change target together with the brightness setting value to the display driver integrated circuit 200.

[0067] In operation 303, the display driver integrated circuit 200 may determine at least one of the number, value, or retention time of the intermediate driving frequencies having the brightness value currently applied to the display panel 160 according to the brightness setting value. For example, when the current brightness value (or brightness setting value) of the display panel 160 is the first brightness value, the display driver integrated circuit 200 may allocate n intermediate driving frequencies, and when the brightness value (or brightness setting value) of the display panel 160 is the second brightness value (e.g., a value greater than the first brightness value), m (e.g., a natural number different from n) intermediate driving frequencies may be allocated. According to an embodiment of the present disclosure, the display driver integrated circuit 200 may allocate relatively more intermediate driving frequencies when the brightness value of the display panel 160 is relatively high, and may allocate relatively fewer intermediate driving frequencies when its brightness value is relatively low. Alternatively, according to the characteristics of the display panel 160, the display driver integrated circuit 200 may allocate relatively fewer intermediate driving frequencies when the brightness value of the display panel 160 is relatively low, and allocate relatively more intermediate driving frequencies when the brightness value is relatively high.

[0068] According to various embodiments of the present disclosure, the display driver integrated circuit 200 may allocate the value of the intermediate drive frequency within the range between the current drive frequency and the target drive frequency by uniform or non-uniform division. For example, if the difference between the current drive frequency and the target drive frequency is within a first range, the display driver integrated circuit 200 may perform uniform division, and if the difference is a second range greater than the first range, non-uniform division may be performed. In the non-uniform division, the display driver integrated circuit 200 may allocate fewer relatively low drive frequency values, and may allocate more relatively high drive frequency values. Optionally, according to the characteristics of the display panel 160, in the non-uniform division, the display driver integrated circuit 200 may allocate more relatively low drive frequency values, and may allocate fewer relatively high drive frequency values.

[0069] According to various embodiments of the present disclosure, the display driver integrated circuit 200 may evenly distribute or unevenly distribute the holding time of the intermediate driving frequency. For example, if the difference between the current driving frequency and the target driving frequency is within a first range, the display driver integrated circuit 200 may evenly distribute the holding time of the corresponding driving frequency, and if the difference is a second range greater than the first range, the holding time of the corresponding driving frequency may be unevenly distributed. According to an embodiment of the present disclosure, the display driver integrated circuit 200 may allocate a shorter holding time for a relatively low driving frequency, and may allocate a longer holding time for a relatively high driving frequency. Optionally, according to the characteristics of the display panel 160, the display driver integrated circuit 200 may allocate a longer holding time for a relatively low driving frequency, and may allocate a shorter holding time for a relatively high driving frequency.

[0070] In operation 305 , the display driver integrated circuit 200 may determine at least one of gamma correction, AOR control, driving speed control, or light emission cycle control related to maintaining optical characteristics according to the determined intermediate driving frequency.

[0071] For example, if the number of intermediate driving frequencies is relatively large, the display driver integrated circuit 200 may set the time period of the light emission cycle to be relatively short, and if the number of intermediate driving frequencies is relatively small, the time period of the light emission cycle may be set to be relatively long. Alternatively, according to the characteristics of the display panel 160, if the number of intermediate driving frequencies is relatively large, the display driver integrated circuit 200 may set the time period of the light emission cycle to be relatively long, and if the number of intermediate driving frequencies is relatively small, the time period of the light emission cycle may be set to be relatively short.

[0072] According to various embodiments of the present disclosure, if the number of intermediate driving frequencies is relatively large, the display driver integrated circuit 200 may set the AOR to be shorter (reducing the turn-off ratio), and if the number of intermediate driving frequencies is relatively small, the AOR may be set to be longer (increasing the turn-off ratio). Alternatively, according to the characteristics of the display panel 160, if the number of intermediate driving frequencies is relatively large, the display driver integrated circuit 200 may set the AOR to be relatively long, and if the number of intermediate driving frequencies is relatively small, the AOR may be set to be relatively short.

[0073] According to various embodiments of the present disclosure, if the number of intermediate driving frequencies is relatively large, the display driver integrated circuit 200 may set the driving speed (e.g., 1H time or the number of VFPs) to be relatively short. If the number of intermediate driving frequencies is relatively small, the display driver integrated circuit 200 may set the driving speed (e.g., 1H time or the number of VFPs) to be relatively long. Optionally, according to the characteristics of the display panel 160, if the number of intermediate driving frequencies is relatively large, the display driver integrated circuit 200 may set the driving speed (e.g., 1H time or the number of VFPs) to be relatively long, and if the number of intermediate driving frequencies is relatively small, the driving speed (e.g., 1H time or the number of VFPs) may be set to be relatively short. According to various embodiments of the present disclosure, if the value of the target driving frequency is relatively large, the display driver integrated circuit 200 may set the driving speed to be relatively short (or long), and if the value of the target driving frequency is relatively small, the driving speed may be set to be relatively long (or short).

[0074] According to various embodiments of the present disclosure, the display driver integrated circuit 200 may pre-store a gamma correction table corresponding to each intermediate driving frequency, and may apply the corresponding gamma correction table by determining the intermediate driving frequency through the processor. Optionally, the display driver integrated circuit 200 may perform gamma correction on the first intermediate driving frequency without a gamma correction table by using the gamma correction table of other adjacent intermediate driving frequencies (e.g., in the case of 70 Hz, a gamma correction table for 60 Hz and a gamma correction table for 80 Hz). In this operation, the display driver integrated circuit 200 may apply the arithmetic mean of the values ​​of the two gamma correction tables as the gamma correction value of the first intermediate driving frequency.

[0075] The display driver integrated circuit circuit 200 may selectively operate with at least one of the above-mentioned light emission cycle, AOR, driving speed, and gamma correction to perform control so that the brightness value of the display panel 160 at the intermediate driving frequency is the same as or similar to the brightness value of the display panel 160 at the current driving frequency. Optionally, the display driver integrated circuit 200 may adjust at least one of the light emission cycle, AOR, driving speed, and gamma correction based on the values ​​of the current driving frequency and the target driving frequency and the adjustment table of the brightness value of the current display panel 160.

[0076] Figure 4 is a diagram illustrating a driving method of a display according to an embodiment of the present disclosure.

[0077] Reference Figure 4 Regarding the driving method of the display according to the embodiment of the present disclosure, in operation 401, the display driver integrated circuit 200 can output a screen (or frame) accompanied by content playback on the display panel 160 by turning on the display panel 160 or keeping the power-on state at the same time.

[0078] In operation 403, the display driver integrated circuit 200 may determine whether an event related to changing the driving frequency occurs. The occurrence of the event related to changing the driving frequency may include, for example, receiving an instruction related to changing the driving frequency from the processor 140.

[0079] If an event related to changing the driving frequency occurs, the display driver integrated circuit 200 may determine the brightness value of the display panel 160 by determining at least some of the signals provided to the display panel 160 at operation 405. Alternatively, the display driver integrated circuit 200 may determine the brightness setting value of the display panel 160 received from the processor 140. In this operation, the display driver integrated circuit 200 may include a second memory 210 and store and manage the brightness setting value of the display panel 160 in the second memory 210. The brightness setting value of the display panel 160 stored in the second memory 210 may be updated in real time as the brightness setting value of the display panel 160 changes or at a point in time when the driving frequency of the display panel 160 changes.

[0080] In operation 407, the display driver integrated circuit 200 may determine whether the current brightness value of the display panel 160 is between a specified minimum value Lmin and a specified maximum value Lmax. The specified minimum value Lmin and maximum value Lmax may vary according to at least one of panel characteristics of the display panel 160, a usage time of the display panel 160, and a type of executed content.

[0081] If the brightness value of the display panel 160 is between the minimum value Lmin and the maximum value Lmax, in operation 409, the display driver integrated circuit 200 may change the current driving frequency to the target driving frequency based on the intermediate driving frequency. In the process of changing, in order to maintain the optical characteristics of the display panel 160, the display driver integrated circuit 200 may adjust at least one of the light emission cycle, AOR, driving speed, and gamma correction table at each driving frequency (e.g., the intermediate driving frequency and the target driving frequency). Operation 409 may include determining an adjustment coefficient of the intermediate driving frequency and determining an adjustment coefficient related to the screen display at each driving frequency for maintaining the optical characteristics of the display panel 160, as described above with reference to Figure 3 Described.

[0082] If the brightness value of the display panel 160 is not between the minimum value Lmin and the maximum value Lmax, the display driver integrated circuit 200 may perform a change to the target driving frequency without determining and applying any separate intermediate driving frequency in operation 411. For example, if the brightness value of the display panel 160 is less than or equal to the minimum value Lmin or equal to or greater than the maximum value, the display driver integrated circuit 200 may perform a change to the target driving frequency without using any separate intermediate driving frequency. According to various embodiments of the present disclosure, the display driver integrated circuit 200 may adjust at least one of the light emission cycle, AOR, driving speed, and gamma correction table of the display panel 160 at the target driving frequency when performing the change to the target driving frequency, and thus may perform control so that the optical characteristics of the display panel 160 at the target driving frequency are the same or similar to the optical characteristics of the display panel 160 at the current driving frequency. According to various embodiments of the present disclosure, the display driver integrated circuit 200 may store an adjustment table in the second memory 210 (the adjustment table defines adjustment values ​​of the light emission cycle, AOR, driving speed, and gamma correction table when each brightness value of the display panel 160 is changed from the current driving frequency to the target driving frequency), and may process the application of the light emission cycle, AOR, driving speed, and gamma correction table at the target driving frequency based on the adjustment table.

[0083] In operation 413, the display driver integrated circuit 200 may determine whether an event related to turning off the display panel 160 occurs. If the event related to turning off the display panel 160 does not occur, the process is branched before operation 401 and the display driver integrated circuit 200 may perform control to re-execute subsequent operations. If the event related to turning off the display panel 160 occurs, the display driver integrated circuit 200 may turn off the display panel 160 and may end the operation related to driving the display panel 160.

[0084] Figure 5 is a diagram illustrating an adjustment coefficient of determining an intermediate frequency for each luminance value in a display driving method according to an embodiment of the present invention.

[0085] Reference Figure 5, as shown in 501, when the brightness value of the display panel 160 is 420nit, the current driving frequency is 60Hz, and the target driving frequency is 120Hz, the display driver integrated circuit 200 can allocate three intermediate driving frequencies (e.g., 70Hz, 100Hz, and 110Hz). Therefore, the display driver integrated circuit 200 can change the driving frequency of the display panel 160 from 60Hz to 120Hz through the intermediate driving frequencies 70Hz, 100Hz, and 110Hz. According to an embodiment of the present invention, when the brightness value of the display panel 160 is 100nit, the current driving frequency is 60Hz, and the target driving frequency is 120Hz, the display driver integrated circuit 200 can allocate two intermediate driving frequencies (e.g., 70Hz and 110Hz). Therefore, the display driver integrated circuit 200 can change the driving frequency of the display panel 160 from 60Hz to 120Hz through the intermediate driving frequencies 70Hz and 110Hz. Here, taking the intermediate driving frequency as an example, the display driver integrated circuit 200 may assign different values, such as 75 Hz, 80 Hz, 90 Hz, 95 Hz, and the like.

[0086] According to various embodiments of the present invention, as in 503, when the brightness value of the display panel 160 is 420nit, the current driving frequency is 60Hz, and the target driving frequency is 120Hz, the display driver integrated circuit 200 can use 70Hz, 90Hz, and 110Hz as the allocated intermediate driving frequencies. When the brightness value of the display panel 160 is 80nit, the current driving frequency is 60Hz, and the target driving frequency is 120Hz, the display driver integrated circuit 200 can allocate three intermediate driving frequencies, but the intermediate driving frequencies may have different values ​​(e.g., 80Hz, 90Hz, and 110Hz) than when the brightness value of the display panel 160 is 400nit. Since problems such as flicker are relatively less prominent in a low-illuminance environment, if the brightness value of the display panel 160 is relatively low as described above, the display driver integrated circuit 200 may allocate more relatively high intermediate driving frequencies.

[0087] According to various embodiments of the present invention, as in 505, when the brightness value of the display panel 160 is 420nit, the current driving frequency is 60Hz, and the target driving frequency is 120Hz, the display driver integrated circuit 200 can use 70Hz, 100Hz, and 110Hz as the allocated intermediate driving frequencies, and can set the holding time of the intermediate driving frequency (the number of frames displayed at the driving frequency) to be respectively operated as 2, 2, and 2. Here, the operation of 2, 2, and 2 can represent the operation of outputting two frames at 70Hz, outputting two frames at 100Hz, and then outputting two frames at 110Hz. When the brightness value of the display panel 160 is 100nit, the current driving frequency is 60Hz, and the target driving frequency is 120Hz, the display driver integrated circuit 200 can allocate 70Hz and 110Hz as the intermediate driving frequencies, but can also operate the holding time of the driving frequency as 4 and 4 respectively. Here, the operation of 4 and 4 can mean the operation of outputting four frames at 70Hz and outputting four frames at 110Hz. As described above, since problems such as flicker are relatively less prominent in a low illumination environment, the display driver integrated circuit 200 may allocate fewer intermediate driving frequencies or more relatively high driving frequencies if the brightness value of the display panel 160 is relatively low.

[0088] Figure 6 is a diagram illustrating a light emission cycle of adjusting an intermediate frequency for each brightness value in a display driving method according to an embodiment of the present invention.

[0089] Reference Figure 6 , as shown in 601, when the brightness value of the display panel 160 is 420nit, the current driving frequency is 60Hz, and the target driving frequency is 120Hz, the display driver integrated circuit 200 can allocate three intermediate driving frequencies of 70Hz, 100Hz and 110Hz, and can allocate 914, 296 and 135 as the values ​​of the vertical front edge (VFP) of the three intermediate driving frequencies, respectively. VFP can be a value related to the time of maintaining one frame. For example, VFP can include a value obtained by giving a pause time from the time of displaying one frame to the time of displaying the next frame in units of gate lines. For VFP, when VFP is relatively large, a value that keeps the corresponding frame display longer can be applied, and when VFP is relatively small, a value that keeps the corresponding frame display shorter can be applied. The display driver integrated circuit 200 can set the light emission cycles of the driving frequencies of 60Hz, 70Hz, 100Hz, 110Hz and 120Hz to 4 (four switching repetitions during one frame output, cycle / frame), 4, 2, 2 and 2, respectively. Here, the light emission cycle may include a cycle (eg, a duty cycle) of supplying power to pixels of the display panel 160 during display of one frame. For example, four settings may include settings for displaying one frame through four switching operations.

[0090] As shown in 603, when the brightness value of the display panel 160 is 100 nit, the current driving frequency is 60 Hz, and the target driving frequency is 120 Hz, the display driver integrated circuit 200 can allocate four intermediate driving frequencies of 70 Hz, 100 Hz, 110 Hz, and 120 Hz. The display driver integrated circuit 200 can set the light emission cycles of the driving frequencies of 60 Hz, 70 Hz, 100 Hz, 110 Hz, 120 Hz, and 120 Hz to 4, 4, 4, 4, 4, and 2, respectively.

[0091] As described above, the display driver integrated circuit 200 according to the embodiment of the present disclosure can perform control by allocating a shorter light-emitting cycle (for example, by allocating more switching time periods for one frame operation to shorten the cycle interval) when the brightness value of the display panel 160 is relatively low, and allocating a longer light-emitting cycle (for example, by allocating fewer switching time periods for one frame operation to lengthen the cycle interval) when the brightness value of the display panel 160 is relatively high, so that the optical characteristics of the intermediate driving frequency are the same or similar to the optical characteristics of the current driving frequency and the target driving frequency.

[0092] on the other hand, Figure 6 The number and value of the intermediate frequencies, the value of VFP, and the value of the light emission cycle described in the embodiment may vary according to the size, characteristics, usage time, or type of content to be displayed by the display panel 160.

[0093] Figure 7 is a diagram illustrating setting of VFP, light emission cycle, and AOR in a display driving method according to an embodiment of the present invention.

[0094] Reference Figure 7As in 701, the display driver integrated circuit 200 according to the embodiment of the present disclosure may perform control so that if a driving frequency change is requested (e.g., from 60 Hz to 120 Hz) in a state where the brightness value of the display panel 160 is 420 nit, the driving frequency is changed to a target driving frequency through 70 Hz, 100 Hz, and 110 Hz. In this operation, the display driver integrated circuit 200 may allocate 914, 296, and 135 to the VFP of the intermediate driving frequencies of 70 Hz, 100 Hz, and 110 Hz, respectively, and for the light emission cycle, 4, 2, 2, 2, and 2 cycles may be allocated to the driving frequencies of 60 Hz, 70 Hz, 100 Hz, 110 Hz, and 120 Hz, respectively, and for the AMOLED off ratio (AOR), 45%, 46%, 47%, 46%, and 45% may be allocated to the driving frequencies of 60 Hz, 70 Hz, 100 Hz, 110 Hz, and 120 Hz, respectively. The display driver integrated circuit 200 may perform control so that if a driving frequency change is requested (e.g., from 60 Hz to 120 Hz) when the brightness value of the display panel 160 is 100 nit, the driving frequency is changed to the target driving frequency through 70 Hz and 110 Hz. In this operation, the display driver integrated circuit 200 may allocate 900 and 100 to the VFP of the intermediate driving frequencies of 70 Hz and 110 Hz, respectively, and for the light emission cycle, 4, 4, 4, and 2 cycles may be allocated to the driving frequencies of 60 Hz, 70 Hz, 110 Hz, and 120 Hz, respectively, and for the AMOLED turn-off ratio (AOR), 45%, 46%, 47%, and 45% may be allocated to the driving frequencies of 60 Hz, 70 Hz, 110 Hz, and 120 Hz, respectively. As described above, if the brightness value of the display panel 160 is relatively low, the display driver integrated circuit 200 may allocate fewer intermediate driving frequencies, allocate fewer VFP values, allocate shorter light emission cycles, and allocate larger AOR change rates.

[0095] According to various embodiments of the present disclosure, as in 703, the display driver integrated circuit 200 may assign 420nit and 100nit to the same number and value of intermediate drive frequencies, but may set the corresponding VFP, light emission cycle, and AOR values ​​differently. In this operation, display abnormalities such as flickering are less observed at relatively low brightness values ​​of the display panel 160, so the display driver integrated circuit 200 may set the holding time (VFP) of one frame to a time period of a shorter light emission cycle, and may set the AOR change rate to be greater. Here, the holding time, light emission cycle, and AOR change rate of the frame may be adjusted within a range where the brightness value of the display panel 160 at the corresponding intermediate drive frequency is the same or similar to the brightness value of the display panel 160 at the adjacent intermediate drive frequency.

[0096] Figure 8 2 is a diagram illustrating setting of a gamma correction table in a display driving method according to an embodiment of the present invention.

[0097] Reference Figure 8 , as in 801, the display driver integrated circuit 200 according to the embodiment of the present disclosure may perform control so that if a driving frequency change (e.g., from 60 Hz to 120 Hz) is requested in a state where the brightness value of the display panel 160 is 420 nit, the driving frequency is changed to a target driving frequency through 70 Hz, 100 Hz, and 110 Hz. In this operation, regarding the gamma correction table of the driving frequency, the display driver integrated circuit 200 may apply a 60 Hz gamma correction table at a driving frequency of 60 Hz, may apply a 60 Hz gamma correction table at a driving frequency of 70 Hz, and may apply a 60 Hz gamma correction table to a value exceeding (or equal to or less than) 202G (202 grays based on 256 grays) at a driving frequency of 100 Hz, or apply a 120 Hz gamma correction table to a value of 202G or less (or less than 202G). In addition, at a driving frequency of 110 Hz, the display driver integrated circuit 200 may apply a 120 Hz gamma correction table to a value exceeding (or equal to or less than) 202G, and apply a new gamma correction table (or less than 202G) to a value of 202G or less, and at a driving frequency of 120 Hz, a 120 Hz gamma correction table may be applied. In this regard, in the second memory 210 of the display driver integrated circuit 200, a first gamma correction table (or a 60 Hz gamma correction table) may be stored when applied at a driving frequency of 60 Hz, and a second gamma correction table (or a 120 Hz gamma correction table) may be stored when applied at a driving frequency of 120 Hz. Additionally or optionally, the new gamma correction table may include a gamma correction table generated by using a gamma correction table generated by using the first gamma correction table and the second gamma correction table (e.g., a table consisting of an arithmetic mean of the gamma values ​​of the first gamma correction table and the gamma values ​​of the second gamma correction table). In this operation, the display driver integrated circuit 200 may assign 914, 296, and 135 to the VFP values ​​of the intermediate driving frequencies (e.g., 70 Hz, 100 Hz, and 110 Hz), respectively. In addition, the display driver integrated circuit 200 may assign 8 to the VFP value of the driving frequency of 60 Hz or the driving frequency of 120 Hz. The 202 grayscales in the application of the above-mentioned gamma correction table are arbitrary statistical data and may be changed to different values ​​(e.g., 180 grayscales, 200 grayscales, etc.) according to at least one of the characteristics or usage time of the display panel 160, the type of output content, and the user setting.

[0098] According to various embodiments of the present disclosure, as in the state of 803, if a driving frequency change (e.g., a change from 60 Hz to 120 Hz) is requested when the brightness value of the display panel 160 is 100 nit, the display driver integrated circuit 200 may allocate two intermediate driving frequencies of 70 Hz and 110 Hz, and may process the application of a gamma correction table to the corresponding driving frequencies. In this operation, for the intermediate driving frequency of 110 Hz, the display driver integrated circuit 200 may apply a 120 Hz gamma correction table to gray values ​​exceeding 202G, and may apply a 60 Hz gamma correction table to gray values ​​of 202G or less. In this regard, the second memory 210 may store a 60 Hz gamma correction table and a 120 Hz gamma correction table, respectively.

[0099] Fig. 9 2 is a diagram showing a display driving method according to an embodiment of the present invention, in accordance with a setting of a driving frequency change direction.

[0100] Reference Fig. 9 As in 901, the display driver integrated circuit 200 according to the embodiment of the present disclosure may perform control so that if a driving frequency change (e.g., from 60 Hz to 120 Hz) is requested in a state where the brightness value of the display panel 160 is 50 nit, the driving frequency is changed to a target driving frequency through 70 Hz, 100 Hz, and 110 Hz. In this operation, the display driver integrated circuit 200 may allocate 914, 296, and 135 to the VFP of the intermediate driving frequencies 70 Hz, 100 Hz, and 110 Hz, and may allocate 4, 4, and 4 (frames) to the holding time of the driving frequency (e.g., displayed as the number of frames of the driving frequency).

[0101] As in 903, the display driver integrated circuit 200 according to various embodiments of the present disclosure can perform control so that if a driving frequency change is requested (for example, from 120 Hz to 60 Hz) when the brightness value of the display panel 160 is 50 nit, the driving frequency is changed to the target driving frequency through 70 Hz, 100 Hz, 110 Hz; here, the display driver integrated circuit 200 can assign 914, 296 and 135 to the VFP of the intermediate driving frequencies 70 Hz, 100 Hz and 110 Hz, and can assign 8, 8 and 8 (frames) to the holding time of the driving frequency (for example, displayed as the number of frames corresponding to the driving frequency).

[0102] As described above, if the driving frequency changes from a relatively low driving frequency to a relatively high driving frequency, the display driver integrated circuit 200 can set the change time (or response speed) to the target driving frequency to be shorter by keeping the frame holding time shorter, and if the driving frequency changes from a relatively high driving frequency to a relatively low driving frequency, the degree of fatigue caused by the frequency change of the display panel 160 can be reduced by keeping the frame holding time longer.

[0103] Meanwhile, in the above description, the intermediate driving frequencies have been described as being allocated in the same amount in the direction of change of the driving frequency (e.g., the direction from a high value to a low value or the direction from a low value to a high value); however, the present disclosure is not limited thereto. For example, if the driving frequency changes from a relatively high driving frequency to a relatively low driving frequency, the display driver integrated circuit 200 may allocate a relatively small number of intermediate driving frequencies. In addition, if the driving frequency changes from a relatively high driving frequency to a relatively low driving frequency, the display driver integrated circuit 200 may allocate more VFP values, and if it changes from a relatively low driving frequency to a relatively high driving frequency, less VFP values ​​may be allocated.

[0104] Fig.10 is a diagram illustrating setting a driving frequency according to application of a range value in a display driving method according to an embodiment of the present disclosure.

[0105] Reference Fig.10 According to the display driver integrated circuit 200 of the embodiment of the present disclosure, control may be performed so that if a driving frequency change (e.g., from 60 Hz to 120 Hz) is requested in a state where the brightness value of the display panel 160 is lower than 15 nit or 500 nit or higher, the driving frequency is directly changed from 60 Hz to 120 Hz without allocating any separate intermediate driving frequency. According to various embodiments of the present disclosure, the display driver integrated circuit 200 may omit the operation of allocating the light emission cycle and AOR to the intermediate driving frequency. Additionally or alternatively, the display driver integrated circuit 200 may omit the operation of allocating the VFP and the gamma correction table to the intermediate driving frequency.

[0106] Meanwhile, in the above description, regarding the driving speed control, VFP (setting of the holding time of one frame) has been described; however, the display driver integrated circuit 200 can adjust the driving speed by adjusting the 1H time. In operation, if the brightness value of the display panel 160 is relatively high, the display driver integrated circuit 200 can set the 1H time of each driving frequency to be relatively long (or short), and if the brightness value of the display panel 160 is relatively low, the 1H time of each driving frequency can be set to be relatively short (long).

[0107] As described above, an electronic device according to an embodiment of the present disclosure may include a display panel and a display driver integrated circuit, the display driver integrated circuit receiving a request to change a current driving frequency of the display panel to a target driving frequency, determining whether a brightness value of the display panel is within a specified first size and a second size, and then if the brightness value of the display panel is within the first size and the second size, determining at least one intermediate driving frequency between the current driving frequency and the target driving frequency according to the brightness value of the display panel.

[0108] Optionally, an electronic device according to an embodiment of the present disclosure may include a display panel and a display driver integrated circuit, the display driver integrated circuit being configured to receive a request to change a current driving frequency of the display panel to a target driving frequency, determine whether a brightness value of the display panel is less than or equal to a specified first size or equal to or greater than a second size, and then determine at least one intermediate driving frequency between the current driving frequency and the target driving frequency based on the brightness value of the display if the brightness value of the display panel exceeds the first size and is less than the second size, and omit determining at least one intermediate driving frequency if the brightness value of the display panel is less than or equal to the first size or equal to or greater than the second size.

[0109] According to various embodiments of the present disclosure, an electronic device may include a display panel and a display driver integrated circuit configured to drive the display panel. The display driver integrated circuit may be configured to determine a brightness value of the display panel if a request to change from a current driving frequency of the display panel to a target driving frequency is received, and determine at least one intermediate driving frequency between the current driving frequency and the target driving frequency based on the brightness value of the display panel.

[0110] According to various embodiments of the present disclosure, the display driver integrated circuit may be configured to differently determine at least one of the number of at least one intermediate driving frequency, the value of at least one intermediate driving frequency, and the holding time of at least one intermediate driving frequency according to a brightness value of the display panel.

[0111] According to various embodiments of the present disclosure, the display driver integrated circuit may be configured to allocate a greater number of at least one intermediate driving frequency as the brightness value of the display panel increases.

[0112] According to various embodiments of the present disclosure, the display driver integrated circuit may be configured to allocate a smaller number of at least one intermediate driving frequency as the brightness value of the display panel decreases.

[0113] According to various embodiments of the present disclosure, the display driver integrated circuit may be configured to allocate a shorter holding time of at least one intermediate driving frequency as the brightness value of the display panel increases.

[0114] According to various embodiments of the present disclosure, the display driver integrated circuit may be configured to allocate a longer holding time of at least one intermediate driving frequency as the brightness value of the display panel decreases.

[0115] According to various embodiments of the present disclosure, the display driver integrated circuit can be configured to determine the first intermediate driving frequency and the second intermediate driving frequency differently when the brightness value of the display panel is the same, allocate the first intermediate driving frequency when the current driving frequency is greater than the target driving frequency, and allocate the second intermediate driving frequency when the current driving frequency is less than the target driving frequency.

[0116] According to various embodiments of the present disclosure, the display driver integrated circuit may be configured to differently determine the number of frame outputs of the first intermediate driving frequency and the number of frame outputs of the second intermediate driving frequency.

[0117] According to various embodiments of the present invention, the display driver integrated circuit may control the brightness value of the display panel to be maintained within a predetermined range while changing a current driving frequency to a target driving frequency through the determined at least one intermediate driving frequency.

[0118] According to various embodiments of the present disclosure, a display driver integrated circuit can be configured to adjust at least one of a light emission cycle of a display panel at at least one intermediate driving frequency, a gamma correction table at at least one intermediate driving frequency, a pixel turn-off ratio of the display panel, and a driving speed of the display panel, so that a brightness value of the display panel at at least one intermediate driving frequency is the same as or similar to a brightness value of the display panel at a current driving frequency.

[0119] According to various embodiments of the present disclosure, the electronic device may further include: a memory storing an adjustment table for adjusting a light emission cycle of a display panel at at least one intermediate driving frequency, a gamma correction table at at least one intermediate driving frequency, a pixel turn-off ratio of the display panel, and at least one of a driving speed of the display panel.

[0120] According to various embodiments of the present disclosure, a display driver integrated circuit may be configured to set a light emission cycle at at least one intermediate driving frequency to become smaller as a brightness value of a display panel increases, and to set a light emission cycle at at least one intermediate driving frequency to become larger as a brightness value of a display panel decreases.

[0121] According to various embodiments of the present disclosure, a display driver integrated circuit may be configured to use a first gamma correction table associated with driving a display panel at a current driving frequency and a second gamma correction table associated with driving a display panel at a target driving frequency for gamma correction of at least one intermediate driving frequency.

[0122] According to various embodiments of the present disclosure, the display driver integrated circuit may be configured to omit application of at least one intermediate driving frequency if a luminance value of the display panel is less than or equal to a specified first size or equal to or greater than a specified second size.

[0123] According to various embodiments of the present disclosure, a driving method for a display may include: receiving, by a display driver integrated circuit, a request to change from a current driving frequency of a display panel to a target driving frequency, determining, by the display driver integrated circuit, a brightness value of the display panel, and determining, by the display driver integrated circuit, at least one intermediate driving frequency between the current driving frequency and the target driving frequency based on the brightness value of the display panel.

[0124] According to various embodiments of the present disclosure, determining may include differently determining at least one of the number of at least one intermediate driving frequency, the value of at least one intermediate driving frequency, and the maintaining time of at least one intermediate driving frequency according to a brightness value of the display panel.

[0125] According to various embodiments of the present disclosure, the method may further include controlling a brightness value of the display panel to be maintained within a predetermined range while changing a current driving frequency to a target driving frequency through the determined at least one intermediate driving frequency.

[0126] According to various embodiments of the present disclosure, the control may include adjusting at least one of a light emission cycle of the display panel at at least one intermediate driving frequency, a gamma correction table at at least one intermediate driving frequency, a pixel turn-off ratio of the display panel, and a driving speed of the display panel.

[0127] According to various embodiments of the present disclosure, adjustment can be performed based on an adjustment table stored in a memory, wherein the adjustment table is used to adjust at least one of a light emission cycle of a display panel at at least one intermediate driving frequency, a gamma correction table at at least one intermediate driving frequency, a pixel turn-off ratio of a display panel, and a driving speed of the display panel.

[0128] According to various embodiments of the present disclosure, the method may further include determining whether a brightness value of the display panel is less than or equal to a specified first size or equal to or greater than a specified second size, and omitting determination of at least one intermediate driving frequency according to the determination.

[0129] According to various embodiments of the present disclosure, the method may further include: allocating, by the display driver integrated circuit, a greater number of at least one intermediate driving frequency as a brightness value of the display panel increases.

[0130] According to various embodiments of the present disclosure, the method may further include: allocating, by the display driver integrated circuit, a smaller number of at least one intermediate driving frequency as the brightness value of the display panel decreases.

[0131] According to various embodiments of the present disclosure, the method may further include: allocating, by the display driver integrated circuit, a shorter holding time of the at least one intermediate driving frequency as the brightness value of the display panel increases.

[0132] According to various embodiments of the present disclosure, the method may further include: allocating, by the display driver integrated circuit, a longer holding time of the at least one intermediate driving frequency as the brightness value of the display panel decreases.

[0133] Fig.11 is a block diagram illustrating an electronic device 1101 in a network environment 1100 according to various embodiments.

[0134] Reference Fig.11 , the electronic device 1101 in the network environment 1100 may communicate with the electronic device 1102 via the first network 1198 (e.g., a short-range wireless communication network), or communicate with the electronic device 1104 or the server 1108 via the second network 1199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 1101 may communicate with the electronic device 1104 via the server 1108. According to an embodiment, the electronic device 1101 may include a processor 1120, a memory 1130, an input module 1150, a sound output module 1155, a display module 1160, an audio module 1170, a sensor module 1176, an interface 1177, a haptic module 1179, a camera module 1180, a power management module 1188, a battery 1189, a communication module 1190, a subscriber identification module (SIM) 1196, or an antenna module 1197. In some embodiments, at least one of the components (e.g., the connection terminal 1178) may be omitted from the electronic device 1101, or one or more other components may be added to the electronic device 1101. In some embodiments of the present disclosure, some components (e.g., the sensor module 1176, the camera module 1180, or the antenna module 1197) may be implemented as a single component (e.g., the display module 1160).

[0135] The processor 1120 may execute, for example, software (e.g., program 1140) to control at least one other component (e.g., hardware or software component) of the electronic device 1101 coupled to the processor 1120, and may perform various data processing or calculations. According to one embodiment of the present disclosure, as at least part of the data processing or calculation, the processor 1120 may store a command or data received from another component (e.g., sensor module 1176 or communication module 1190) in the volatile memory 1132, process the command or data stored in the volatile memory 1132, and store the result data in the non-volatile memory 1134. According to an embodiment of the present disclosure, the processor 1120 may include a main processor 1121 (e.g., a central processing unit (CPU)) or an application processor (AP)) or an auxiliary processor 1123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that may operate independently of the main processor 1121 or in conjunction with the main processor 1121. For example, when the electronic device 1101 includes a main processor 1121 and an auxiliary processor 1123, the auxiliary processor 1123 may be adapted to consume less power than the main processor 1121 or be specific to a designated function. The auxiliary processor 1123 may be implemented separately from the main processor 1121 or as part of the main processor 1121.

[0136] The auxiliary processor 1123 may replace the main processor 1121 when the main processor 1121 is in an inactive (e.g., sleep) state, or control at least some of the functions or states related to at least one of the components of the electronic device 1101 (e.g., display module 1160, sensor module 1176, or communication module 1190) together with the main processor 1121 when the main processor 1121 is in an active state (e.g., executing an application). According to an embodiment of the present disclosure, the auxiliary processor 1123 (e.g., an image signal processor or a communication processor) may be implemented as part of other components (e.g., camera module 1180 or communication module 1190) functionally related to the auxiliary processor 1123. According to an embodiment of the present disclosure, the auxiliary processor 1123 (e.g., a neural processing unit) may include a hardware structure specified for artificial intelligence model processing. The artificial intelligence model may be generated by machine learning. Such learning may be performed, for example, by the electronic device 1101 executing artificial intelligence or via a separate server (e.g., server 1108). The learning algorithm may include, but is not limited to, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be 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 thereof, but is not limited thereto. The artificial intelligence model may additionally or alternatively include a software structure in addition to a hardware structure.

[0137] The memory 1130 may store various data used by at least one component of the electronic device 1101 (e.g., the processor 1120 or the sensor module 1176). The various data may include, for example, software (e.g., the program 1140) and input data or output data for commands related thereto. The memory 1130 may include a volatile memory 1132 or a non-volatile memory 1134.

[0138] The program 1140 may be stored as software in the memory 1130 , and may include, for example, an operating system (OS) 1142 , middleware 1144 , or an application 1146 .

[0139] The input module 1150 may receive commands or data to be used by other components (e.g., the processor 1120) of the electronic device 1101 from outside (e.g., a user) of the electronic device 1101. The input module 1150 may include, for example, a microphone, a mouse, a keyboard (e.g., buttons), or a digital pen (e.g., a stylus).

[0140] The sound output module 1155 can output sound signals to the outside of the electronic device 1101. The sound output module 1155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records, and the receiver can be used to receive incoming calls. According to an embodiment of the present disclosure, the receiver can be implemented as a separate speaker or as part of the speaker.

[0141] The display module 1160 may visually provide information to the outside of the electronic device 1101 (e.g., a user). The display module 1160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment of the present disclosure, the display module 1160 may include a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of a force caused by a touch.

[0142] The audio module 1170 can convert sound into an electrical signal, or vice versa. According to an embodiment of the present disclosure, the audio module 1170 can obtain sound via the input module 1150, or output sound via the sound output module 1155 or an earphone of an external electronic device (e.g., electronic device 1102) directly (e.g., wired) connected to the electronic device 1101 or wirelessly connected.

[0143] The sensor module 1176 may detect an operating state (e.g., power or temperature) of the electronic device 1101 or an environmental state (e.g., a state of a user) outside the electronic device 1101, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 1176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0144] The interface 1177 may support one or more specific protocols to be used to connect the electronic device 1101 directly (e.g., wired) or wirelessly to an external electronic device (e.g., the electronic device 1102). According to an embodiment, the interface 1177 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0145] The connection end 1178 may include a connector, wherein the electronic device 1101 can be physically connected to an external electronic device (e.g., the electronic device 1102) via the connector. According to an embodiment of the present disclosure, the connection end 1178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0146] The haptic module 1179 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment of the present disclosure, the haptic module 1179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0147] The camera module 1180 may capture a still image or a moving image. According to an embodiment of the present disclosure, the camera module 1180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0148] The power management module 1188 may manage power supply to the electronic device 1101. According to an embodiment of the present disclosure, the power management module 1188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0149] The battery 1189 may power at least one component of the electronic device 1101. According to an embodiment of the present disclosure, the battery 1189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0150] The communication module 1190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 1101 and an external electronic device (e.g., electronic device 1102, electronic device 1104, or server 1108), and perform communication via the established communication channel. The communication module 1190 may include one or more communication processors capable of operating independently from the processor 1120 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. According to an embodiment of the present disclosure, the communication module 1190 may include a wireless communication module 1192 (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 1194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules can communicate with an external electronic device via a first network 1198 (e.g., a short-range communication network such as Bluetooth, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 1199 (e.g., a long-range communication network such as a traditional cellular network, a fifth generation (5G) network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or these various types of communication modules can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 1192 can identify and authenticate the electronic device 1101 in a communication network (such as the first network 1198 or the second network 1199) using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 1196.

[0151] The antenna module 1197 may transmit a signal or power to the outside of the electronic device 1101 (e.g., an external electronic device) or receive a signal or power from the outside of the electronic device 1101 (e.g., an external electronic device). According to an embodiment of the present disclosure, the antenna module 1197 may include an antenna including a radiating element, the radiating element being formed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment of the present disclosure, the antenna module 1197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication scheme used in a communication network (such as the first network 1198 or the second network 1199) may be selected from the plurality of antennas by, for example, the communication module 1190 (e.g., the wireless communication module 1192). A signal or power may then be transmitted or received between the communication module 1190 and the external electronic device via the selected at least one antenna. According to an embodiment of the present disclosure, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module 1197.

[0152] At least some of the above components may be connected to each other via an inter-peripheral communication scheme (e.g., a bus, a general purpose input output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0153] According to an embodiment of the present disclosure, a command or data may be sent or received between the electronic device 1101 and the external electronic device 1104 via the server 1108 connected to the second network 1199. Each of the electronic device 1102 and the electronic device 1104 may be a device of the same type as the electronic device 1101, or a device of a different type from the electronic device 1101. According to an embodiment of the present disclosure, all or some operations to be executed in the electronic device 1101 may be executed in one or more of the external electronic device 1102, the external electronic device 1104, or the server 1108. For example, if the electronic device 1101 should automatically execute a function or service or should execute a function or service in response to a request from a user or another device, the electronic device 1101 may request the one or more external electronic devices to execute at least part of the function or service instead of executing the function or service, or the electronic device 1101 may request the one or more external electronic devices to execute at least part of the function or service in addition to executing the function or service. The one or more external electronic devices that receive the request may execute the requested at least part of the function or service, or execute another function or another service related to the request, and transmit the result of the execution to the electronic device 1101. The electronic device 1101 may provide the result as at least a partial reply to the request with or without further processing the result. To this end, for example, cloud computing, distributed computing, mobile edge computing (MEC) or client-server computing may be used.

[0154] The electronic device according to various embodiments may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computing device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to those electronic devices described above.

[0155] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalent forms or alternative forms for corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that the nouns in the singular form corresponding to the term may include one or more things unless the relevant context clearly indicates otherwise. As used herein, each of the phrases such as "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" may include any one or all possible combinations of the items listed together with the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “combined with another element (e.g., the second element)”, “combined to another element (e.g., the second element)”, “connected with another element (e.g., the second element)”, or “connected to another element (e.g., the second element)” when the terms “operably” or “communicatively” are used or when the terms “operably” or “communicatively” are not used, it means that the element may be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0156] As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or a minimum unit or portion of the single integrated component. For example, according to an embodiment of the present disclosure, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0157] The various embodiments described herein may be implemented as software (e.g., program 1140) including one or more instructions stored in a storage medium (e.g., internal memory 1136 or external memory 1138) that can be read by a machine (e.g., electronic device 1101). For example, under the control of a processor, a processor (e.g., processor 1120) of the machine (e.g., electronic device 1101) may call at least one of the one or more instructions stored in the storage medium and execute the at least one instruction with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be run by an interpreter. A machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include a signal (e.g., an electromagnetic wave), but the term does not distinguish between data being semi-permanently stored in a storage medium and data being temporarily stored in a storage medium.

[0158] According to an embodiment of the present disclosure, the method according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be released in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or may be downloaded via an application store (e.g., Play Store TM ) The computer program product may be published (e.g., downloaded or uploaded) online, or the computer program product may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smart phones). If published online, at least part of the computer program product may be temporarily generated, or at least part of the computer program product may be at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0159] According to various embodiments of the present disclosure, each of the above-mentioned components (e.g., a module or a program) may include a single entity or multiple entities, and some of the multiple entities may be arranged separately in multiple components. According to various embodiments of the present disclosure, one or more of the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., a module or a program) may be integrated into a single component. In this case, according to various embodiments of the present disclosure, the integrated component may still perform the one or more functions of each of the multiple components in the same or similar manner as a corresponding one of the multiple components before integration. According to various embodiments of the present disclosure, the operations performed by a module, a program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more of the operations may be run or omitted in a different order, or one or more other operations may be added.

[0160] While the present disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents.

Claims

1. An electronic device, comprising: Display panel; as well as A display driver integrated circuit is configured to drive a display panel, Wherein, the display driver integrated circuit is further configured as: receiving, from the processor, a signal corresponding to a request to change from a current driving frequency of the display panel to a target driving frequency of the display panel, In response to the received signal, determining a brightness value of the display panel, and determining at least one intermediate driving frequency of the display panel between the current driving frequency and the target driving frequency according to the determined brightness value of the display panel, and The current driving frequency is changed to a target driving frequency via the at least one intermediate driving frequency.

2. The electronic device according to claim 1, wherein: The display driver integrated circuit is further configured to determine at least one of a value of the at least one intermediate driving frequency or a holding time of the at least one intermediate driving frequency according to a brightness value of the display panel.

3. The electronic device according to claim 2, wherein: The display driver integrated circuit is further configured to allocate a greater number of the at least one intermediate driving frequency as a brightness value of the display panel increases.

4. The electronic device according to claim 2, wherein: The display driver integrated circuit is further configured to allocate a smaller number of the at least one intermediate driving frequency as the brightness value of the display panel decreases.

5. The electronic device according to claim 2, wherein: The display driver integrated circuit is further configured to assign a shorter holding time of the at least one intermediate driving frequency as the brightness value of the display panel increases.

6. The electronic device according to claim 2, wherein: The display driver integrated circuit is further configured to assign a longer holding time of the at least one intermediate driving frequency as the brightness value of the display panel decreases.

7. The electronic device according to claim 1, wherein: The display driver integrated circuit is also configured to determine the first intermediate driving frequency and the second intermediate driving frequency differently when the brightness value of the display panel is the same, allocate the first intermediate driving frequency when the current driving frequency is greater than the target driving frequency, and allocate the second intermediate driving frequency when the current driving frequency is less than the target driving frequency.

8. The electronic device according to claim 7, wherein: The display driver integrated circuit is further configured to differently determine the number of frame outputs of the first intermediate driving frequency and the number of frame outputs of the second intermediate driving frequency.

9. The electronic device according to claim 1, wherein: The display driver integrated circuit is further configured to control a brightness value of the display panel to be maintained within a predetermined range while changing a current driving frequency to a target driving frequency by the determined at least one intermediate driving frequency.

10. The electronic device according to claim 9, wherein: The display driver integrated circuit is also configured to adjust at least one of a light emission cycle of the display panel at at least one intermediate driving frequency, a gamma correction table at at least one intermediate driving frequency, a pixel turn-off ratio of the display panel, or a driving speed of the display panel, so that a brightness value of the display panel at at least one intermediate driving frequency is the same as or similar to a brightness value of a current driving frequency of the display panel.

11. The electronic device according to claim 10, further comprising: A memory storing at least one of an adjustment table for adjusting at least one of a light emission cycle of a display panel at at least one intermediate driving frequency, a gamma correction table at at least one intermediate driving frequency, a pixel turn-off ratio of a display panel, or a driving speed of the display panel.

12. The electronic device according to claim 11, wherein: The display driver integrated circuit is further configured to: The light emission cycle at at least one intermediate driving frequency is set to become smaller as the brightness value of the display panel increases, and The light emission cycle at the at least one intermediate driving frequency is set to become larger as the brightness value of the display panel decreases.

13. The electronic device according to claim 11, wherein: The display driver integrated circuit is further configured to use a first gamma correction table associated with driving the display panel at a current driving frequency and a second gamma correction table associated with driving the display panel at a target driving frequency for gamma correction of at least one intermediate driving frequency.

14. The electronic device according to claim 1, wherein: The display driver integrated circuit is further configured to omit application of at least one intermediate driving frequency when a brightness value of the display panel is less than or equal to a specified first value or equal to or greater than a specified second value, the first value being less than the second value.

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