KR102317172B1 - Electronic device including flexible display and method of operation therof - Google Patents

Abstract

The present invention relates to an electronic device including a flexible display to reduce a difference between the size of a changed display area and the size of an output image frame and an operation method thereof. According to one embodiment of the present invention, the electronic device comprises a flexible display and a processor operatively connected to the flexible display. The processor is configured to estimate the size of a display area after a delay time elapses as it detects that the size of the display area is changed at a first time; form a second frame with the calculated size of the display area; identify the size of the display area at a second time when formation of the second frame is completed; acquire a first difference value which is a difference value between the size of the second frame and the size of the display area at the second time; acquire a second difference value which is a difference value between the size of the first frame output to the display area at the second time and the size of the display area at the second time; output the second frame to the display area of the flexible display when the first difference value is smaller than the second difference value; and maintain output of the first frame when the first difference value is greater than or equal to the second difference value. Various other embodiments understood through the description are possible.

Description

Electronic device including a flexible display and an operating method thereof

Embodiments disclosed in this document relate to an electronic device including a flexible display having a variable screen display area, and an operating method thereof.

In recent years, various types of electronic devices are being developed in order to secure a more extended display area without impeding portability. For example, the flexible display electronic device is a slide type electronic device in which at least one side of the housing is slid while the display is pulled out to expand the screen area exposed to the outside of the electronic device, inside the housing, or A rollable type electronic device in which the screen area exposed to the outside of the electronic device is expanded when the externally wound display is unfolded, or a foldable type in which the screen area of the display is expanded when the folded housing is unfolded ) may include an electronic device and the like.

An electronic device including a flexible display may detect a change in the size of the display area (eg, the width of the display area) and use this as an input value to generate an image frame to be output on the screen. The generated image frame may be displayed on the actual display screen by waiting for a screen refresh rate again. Therefore, a delay may occur from the input for changing the size of the display area until the image frame according to the input result is actually output to the screen.

When the electronic device including the flexible display detects that the size of the display area is changed and a delay occurs until the image frame formed according to the input for changing the size of the display area is actually output to the screen, the display area of the flexible display during the delay time can be changed (expanded or reduced) in size. Therefore, when the formed image frame is actually output to the screen, a difference may occur between the output image frame and the size of the actual current display area.

According to embodiments of the present disclosure, it is possible to provide an electronic device capable of reducing a difference between a changed size of a display area and a size of an output image frame in an electronic device including a flexible display, and an operating method thereof.

An electronic device according to an embodiment of the present disclosure includes a flexible display and a processor operatively connected to the flexible display, wherein the processor detects that the size of the display area is changed at a first time As a result, the size of the display area after the elapse of a delay time is estimated (estimated), a second frame is formed with the calculated size of the display area, and at a second time when the formation of the second frame is completed, the size of the display area is The size is identified, and a first difference value is obtained that is a difference value between the size of the second frame and the size of the display area at the second time. A second difference value that is a difference value between the size and the size of the display area at the second time is obtained, and when the first difference value is smaller than the second difference value, the second frame is placed on the display area of the flexible display output, and when the first difference value is greater than or equal to the second difference value, the display area may be configured to maintain the output of the first frame.

The method for updating a display area of an electronic device including a flexible display according to an embodiment of the present disclosure includes calculating the size of the display area after a delay time elapses by detecting that the size of the display area is changed at a first time, A second frame is formed with the calculated size of the display area, the size of the display area is identified at a second time when the formation of the second frame is completed, and the size of the second frame and the size of the second frame at the second time. A first difference value that is a difference value of the size of the display area is obtained, and a second value that is a difference value between the size of the first frame being output to the display area at the second time and the size of the display area at the second time. a difference value is obtained, and when the first difference value is smaller than the second difference value, the second frame is output to the display area of the flexible display, and the first difference value is greater than or equal to the second difference value In this case, the output of the first frame may be maintained in the display area.

According to an electronic device according to an embodiment of the present disclosure, it is possible to provide an electronic device capable of reducing a difference between a size of a changed display area and a size of an output image frame in an electronic device including a flexible display, and an operating method thereof. have.

In addition, various effects directly or indirectly identified through this document may be provided.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments of the present disclosure.
2 is a flowchart 200 illustrating an operation of an electronic device according to an exemplary embodiment.
3 is a diagram 300 illustrating an operation up to screen update of an electronic device according to an exemplary embodiment.
4 is a diagram 400 for explaining a method of calculating a size of a display area of an electronic device according to an exemplary embodiment.
5 is a diagram 500 for explaining an effect of an electronic device according to an embodiment.
6 is a graph 600 for explaining an effect of an electronic device according to an embodiment.
7 is a graph 700 for explaining an effect of an electronic device according to an exemplary embodiment.
8 is a graph 800 for explaining an effect of an electronic device according to an embodiment.
9 is a graph 900 for explaining an effect of an electronic device according to an embodiment.
10 is a graph 1000 for explaining an effect of an electronic device according to an exemplary embodiment.
In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that various modifications, equivalents, and/or alternatives of the embodiments of the present invention are included.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1 , in a network environment 100 , an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 . In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, the program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 uses less power than the main processor 121 or is set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The auxiliary processor 123 may be, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190). have. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The AI model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 . The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 or an external electronic device (eg, a sound output module 155 ) directly or wirelessly connected to the electronic device 101 . The electronic device 102) (eg, a speaker or headphones) may output a sound.

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses the subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate. The wireless communication module 192 includes various technologies for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) may be supported.

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side surface) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. The server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

It should be understood that the various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "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 "A , B, or C" each may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as “first”, “second”, or “first” or “second” may simply be used to distinguish the component from other components in question, and may refer to components in other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is "coupled" or "connected" to another (eg, second) component, with or without the terms "functionally" or "communicatively". When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

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

Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). may be implemented as software (eg, the program 140) including For example, the processor (eg, the processor 120 ) of the device (eg, the electronic device 101 ) may call at least one of one or more instructions stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the at least one command called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term refers to the case where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided in a computer program product (computer program product). Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store™) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly or online between smartphones (eg: smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

Hereinafter, an operation of the electronic device according to an exemplary embodiment will be described with reference to FIGS. 2, 3 and 4 .

2 is a flowchart 200 illustrating an operation of an electronic device according to an exemplary embodiment. 3 is a diagram 300 illustrating an operation up to screen update of an electronic device according to an exemplary embodiment. 4 is a diagram 400 for explaining a method of calculating a size of a display area of an electronic device according to an exemplary embodiment.

In the present specification, the display area may refer to an area substantially exposed to the front of the electronic device to display content among the display areas.

In embodiments to be described below, the display module (eg, the display module 160 of FIG. 1 ) of the electronic device (eg, the electronic device 101 of FIG. 1 ) may be a flexible display module. According to an embodiment, the flexible display module is a slide type in which at least one side of the housing is slid while the display is pulled out to expand the screen area exposed to the outside of the electronic device, and the flexible display module is wound inside or outside the housing. Corresponds to either the rollable type in which the screen area exposed to the outside of the electronic device is expanded when the display is unfolded, or the foldable type in which the screen area of the display is expanded when the folded housing is unfolded can do.

In an embodiment to be described below, referring to FIG. 3 , the current time (in accordance with an embodiment, the current time may mean a reference time at which the electronic device recognizes the size of the display area and starts drawing a frame at the top end of the software. .) at the first time t0, as a signal for a change in the size of the display area (eg, the first signal 301) is detected, the frame for the corresponding signal goes through a plurality of operations 320 on the software stack. A signal (eg, the first signal 301) for changing the size of the display area is detected at the second time (tx) and the first time (t0) for the time when the formation is completed, and a frame for the signal is displayed on the screen The elapsed time of the delay time td until it is reflected may be referred to as a third time (t0 + td). In an embodiment to be described below, the electronic device has a screen update period tr (eg, the difference between the first screen update time rr1 and the second screen update time rr2), and at a first time t0 The size of the display area of the device is the first size, the size of the display area of the electronic device at the second time (tx) is the second size, and the second size being output to the display area of the electronic device at the second time (tx) It is assumed that the size of the first frame is the third size.

2 and 3 , in operation 201 , the electronic device may detect a change in the size of the display area at a first time t0 that is the current time. The electronic device may periodically detect a change in the size of the display area, and the electronic device may detect a signal 301 for a change in the size of the display area at a first time t0.

In operation 202, the electronic device may calculate (estimate) a fourth size that is the predicted size of the display area of the display area at the third time (t0 + td) when the delay time td has elapsed. A method in which the electronic device including the flexible display module acquires the size of the display area after a predetermined time has elapsed will be described below with reference to FIG. 4 .

Referring to FIG. 4 , the size of the display area at the first time t0 is the first size w0, and the size of the display area at the fourth time tn before a predetermined time from the first time t0 is When the fifth size wn, the electronic device may predict the fourth size wp, which is the size of the display area at the third time t0 + td after the delay time td at the first time t0. have.

According to an embodiment, assuming that the speed at which the size of the display area changes is constant, the electronic device may calculate the slope (a) between the points f0 and fn as a= (w0 - wn)/(t0 - tn). can The electronic device may calculate the fourth size wp through the gradient a as wp=a*td. The calculated fourth size wp may be larger than the maximum size of the display area of the electronic device. In this case, the electronic device may correct the fourth size wp to the size of the maximum displayable area. The calculated fourth size wp may be smaller than the minimum size of the display area of the electronic device. In this case, the electronic device may correct the fourth size wp to the minimum size of the display area of the display.

According to an embodiment, when the electronic device includes a semi-automatic display in which the size change of the display area of the display is initiated by a user's external force (pushing or pulling force) and the screen is expanded using elasticity such as a spring, elasticity acts Since a constant acceleration is applied to the interval, the accuracy of prediction of the size of the display area after a predetermined time of the electronic device may increase. In addition, even in a situation in which the size of the display area of the display is automatically changed using a motor in the electronic device, since the speed of the size change of the display area is constant, the accuracy of predicting the size of the display area of the electronic device may increase.

Referring again to FIGS. 2 and 3 , in operation 203 , the electronic device may form a second frame with the fourth size obtained in operation 202 . According to an embodiment, operations 202 and 203 may be included in a plurality of operations 320 of FIG. 3 . According to an embodiment, the time at which the second frame formation is completed may be the second time tx. According to an embodiment, the plurality of operation steps 320 on the software stack may vary according to a policy of an operating system or a framework. The operating system may read the size value of the display area input by input firmware into the memory at a predetermined period and add an input/output interrupt event. The runtime transmits the event registered by the operating system to the framework, and the framework may process the event and deliver it to an appropriate application. The application can receive the display area size value of the event, perform operations such as memory allocation and layout adjustment, and create an image through a rendering process. The images generated by the framework such as the application and system interface (UI) displayed on the screen are combined into one image during the compositing process, and the synthesized image can be displayed on the screen at the display frame rate. have.

In operation 204, the electronic device may measure the size of the display area at the second time tx, which is the current time. According to an embodiment, the size of the screen measured at the second time tx may be the second size. According to an embodiment, the size of the display area of the electronic device may be changed manually, semi-automatically, or automatically from the first time t0 to the second time tx.

In operation 205 , the electronic device may obtain a first difference value that is a difference value between the fourth size of the second frame formed in operation 203 and the second size that is the size of the display area measured in operation 204 .

In operation 206, the electronic device acquires a second difference value that is a difference value between a third size that is the size of the first frame being output to the screen at a second time tx and a second size that is the size of the display area measured in operation 204 can do. According to an embodiment, the first frame may be updated at the screen update time rr3 before the second time tx and being output to the screen, or may be being updated and outputted to the screen before that.

In operation 207, the electronic device may determine whether the first difference value is less than the second difference value. According to an embodiment, the electronic device compares the first difference value with the second difference value to calculate the size of the display area of the first frame currently being output and the display area for the third time (t0+td) among the second frames that are currently output. A frame closer to the size of the display area may be determined.

In operation 208, according to an embodiment, when the first difference value is less than the second difference value, the electronic device displays the screen with the second frame formed in operation 203 at the next screen update time rr4 of the second time tx. can be updated.

In operation 209, according to an embodiment, when the first difference value is equal to or greater than the second difference value, at the next screen update time rr4, the electronic device does not update to the second frame and displays the current screen on which the first frame is output. can keep

In operation 210, the electronic device may determine whether a change in the size of the display area is continuously detected within a predetermined time. According to an embodiment, the predetermined time may be a period for detecting a size change signal of the display area. According to an exemplary embodiment, if the change in the size of the display area is continuously detected, the process returns to operation 202 of acquiring the size of the display area after a predetermined time, and the flowchart 200 of FIG. 2 may be repeated. According to an embodiment, when the change in the size of the display area is not continuously detected, the electronic device may end the screen update process according to the change in the size of the display area.

According to various embodiments of the present disclosure, the electronic device does not form a frame reflecting the size of the display area at the time when the change in the size of the display area is sensed, but a delay time from the time when the change in the size of the display area is sensed. Since the frame is formed by predicting the size of the display area after this elapses, the difference between the size of the display area and the frame to be updated can be reduced at the actual screen update time.

Also, according to various embodiments of the present disclosure, although the delay time may be different for each electronic device, since the delay time is constant or almost constant within one electronic device, the accuracy of predicting the size of the display area of the electronic device is further increased. can do.

Also, according to various embodiments of the present disclosure, in the case of an electronic device including a semi-automatic or fully automatic flexible display, since the rate of change of the size of the display area is constant or almost constant, the accuracy of the prediction of the size of the display area of the electronic device is may increase further.

In addition, according to various embodiments of the present disclosure, in the case of an electronic device including a fully automatic flexible display, even when the size of the display area changes at a constant speed and stops, the size of the display area can be predicted after a certain period of time. A frame having a size corresponding to the size of the region may be output on the screen.

Also, according to various embodiments of the present disclosure, when the frame corresponding to the size change signal of the display area is formed, the electronic device compares the size of the display area with the size of the display area at the time of actual screen update. The difference between the size of the display area and the frame to be updated can be minimized.

Hereinafter, effects of an electronic device according to an exemplary embodiment will be described with reference to FIG. 5 .

5 is a diagram 500 for explaining an effect of an electronic device according to an embodiment.

Referring to FIG. 5 , the display screen of the electronic device 101 may have a first size 510 at a current time t0. The electronic device 101 may detect a change in the size of the display area at the current time t0. According to an embodiment, the electronic device 101 may detect that the display screen is changed to the second size 520 at the current time t0.

According to an exemplary embodiment, a frame corresponding to the second size 520 may be formed by detecting a change in the size of the display area. However, until the actually formed frame is output on the display screen, a delay time td may elapse from the current time t0, and while the delay time td elapses, the display area of the screen of the electronic device continues to grow, After the delay time td has elapsed, the size of the display area of the electronic device may become the third size 530 . Therefore, when the frame formed corresponding to the second size 520 is output to the display screen, a difference may occur between the formed frame and the third size 530 that is the size of the actual display area, and the size of the display area ( 540), the frame may be displayed in a black or off state.

On the other hand, the electronic device 101 according to the embodiment described with reference to FIGS. 2, 3, and 4 detects a change in the size of the display area, and thus the display area at a time (t0 + td) when the frame is expected to be output. size can be predicted. By forming a frame corresponding to the predicted size of the display area, the electronic device 101 may reduce a difference between the frame formed and the third size 530, which is the size of the actual display area, when the frame is actually output. Accordingly, a frame corresponding to the size of the display area can be output without a screen in an off state.

In addition, in the electronic device 101 according to the embodiment described with reference to FIGS. 2, 3, and 4 above, when the frame corresponding to the predicted third size 530 is formed, the frame being output at the corresponding time. The difference between the size of the display area and the frame to be updated can be further reduced at the actual screen update time by going through a process of determining a frame more similar to the size of the display area at the time of the frame corresponding to the frame size 530 and the third size. have.

Hereinafter, effects of the electronic device according to an embodiment will be described with reference to FIG. 6 .

6 is a graph 600 for explaining an effect of an electronic device according to an embodiment.

Referring to FIG. 6 , the x-axis of the graph 600 of FIG. 6 may represent time (msec), and the y-axis may represent a ratio of the size of the current display area to the size of the entire display area. Hereinafter, the ratio of the size of the current display area to the size of the entire display area indicated by the y-axis in FIGS. 6, 7, 8, 9, and 10 is based on only the changeable display area among the displays of the electronic device. can That is, the size of the entire display area means the changeable display area extended to the maximum size based on only the changeable display area except for the non-changeable display area during display, and the size of the current display area is the changeable display area. may mean the current size of The first graph line 610 may indicate the size of the display area of the electronic device that is changed over time. According to an embodiment, the graph 600 of FIG. 6 shows that when the electronic device includes a semi-automatic flexible display and starts to expand the screen by the user's external force, the screen expands at a slow speed, and then the elastic member (eg, spring) in the electronic device It may be a result of simulating a case in which the screen expands at a high speed using elasticity.

The second graph line 620 may indicate the size of the screen updated according to the detection of the changed size of the screen. The third graph line 630 may indicate the size of the screen that is predicted and updated according to sensing the size of the changed screen when the embodiment described with reference to FIGS. 2, 3, and 4 is applied.

Referring to the graph 600 of FIG. 6 , the third graph line 630 in the case of applying the embodiment described above with reference to FIGS. 2, 3 and 4 is larger than the display display area of the second graph line 620 . It can be seen that there is little difference from the first graph line 610 indicating the actual size of . That is, when the embodiment described above with reference to FIGS. 2, 3 and 4 is applied, the difference between the size of the display area and the size of the output frame at the actual screen update time can be reduced.

Hereinafter, a situation in which the display area of the display of the electronic device is reduced will be described with reference to FIG. 7 .

7 is a graph 700 for explaining an effect of an electronic device according to an exemplary embodiment.

Referring to FIG. 7 , the x-axis of the graph 700 of FIG. 7 may represent time (msec), and the y-axis may represent a ratio of the size of the current display area to the size of the entire display area. The first graph line 710 may indicate the size of the display area of the electronic device that changes over time. According to an exemplary embodiment, the graph 700 of FIG. 7 shows that the electronic device includes a semi-automatic flexible display, and when the screen starts to be reduced by the user's external force, the screen is reduced at a slow speed, and then the elastic member (eg, a spring) in the electronic device is reduced. It may be a result of simulating a case in which the screen is rapidly reduced using elasticity.

The second graph line 720 may indicate the size of the screen that is updated as the changed size of the screen is detected. The third graph line 730 may indicate the size of the screen that is predicted and updated according to the detection of the size of the changed screen when the embodiment described with reference to FIGS. 2, 3, and 4 is applied.

Referring to the graph 700 of FIG. 7 , similarly, the third graph line 730 in the case of applying the embodiment described with reference to FIGS. 2, 3 and 4 is displayed rather than the second graph line 720 . It can be seen that the difference from the first graph line 710 indicating the actual size of the display area is small. That is, when the embodiment described above with reference to FIGS. 2, 3 and 4 is applied, the difference between the size of the display area and the size of the output frame at the actual screen update time can be reduced.

Hereinafter, a situation in which the display area of the display of the electronic device is expanded will be described with reference to FIG. 8 .

8 is a graph 800 for explaining an effect of an electronic device according to an embodiment.

Referring to FIG. 8 , the x-axis of the graph 800 of FIG. 8 may represent time (msec), and the y-axis may represent the ratio of the size of the current display area to the size of the entire display area. The first graph line 810 may indicate the size of the display area of the electronic device that changes over time. According to an exemplary embodiment, the graph 800 of FIG. 8 simulates a case in which the size of the display area is expanded at a constant speed, including a fully automatic flexible display using a motor, and then the expansion is stopped before being expanded to the maximum size. It could be a result.

The second graph line 820 may indicate the size of the screen updated according to the detection of the changed size of the screen. The third graph line 830 may indicate the size of the updated screen predicted by detecting the changed screen size when the embodiment described with reference to FIGS. 2, 3, and 4 is applied.

Referring to the graph 800 of FIG. 8 , the third graph line 830 in the case of applying the embodiment described with reference to FIGS. 2 , 3 and 4 is larger than the display display area of the second graph line 820 . It can be seen that there is little difference from the first graph line 810 indicating the actual size of . That is, when the embodiment described above with reference to FIGS. 2, 3 and 4 is applied, the interruption of the size expansion of the display area can be reflected in the frame size more quickly, and the The difference between the size and the output frame size can be reduced.

Hereinafter, a situation in which a display display area of an electronic device is expanded according to an exemplary embodiment will be described with reference to FIG. 9 .

9 is a graph 900 for explaining an effect of an electronic device according to an embodiment.

Referring to FIG. 9 , the x-axis of the graph 900 of FIG. 9 may represent time (msec), and the y-axis may represent a ratio of the size of the current display area to the size of the entire display area. The first graph line 910 may indicate the size of the display area of the electronic device that changes over time. According to an embodiment, the graph 900 of FIG. 9 may be a simulation result of a case in which the size of the display area of the electronic device expands, stops for a predetermined time, and then expands again.

The second graph line 920 may indicate the size of the screen updated according to the detection of the changed size of the screen. The third graph line 930 may indicate the size of the screen that is predicted and updated according to the detection of the size of the changed screen when the embodiment described with reference to FIGS. 2, 3, and 4 is applied.

Referring to the graph 900 of FIG. 9 , the third graph line 930 in the case of applying the embodiment described with reference to FIGS. 2 , 3 and 4 is larger than the display display area of the second graph line 920 . It can be seen that there is little difference from the first graph line 910 indicating the actual size of . That is, when the embodiment described above with reference to FIGS. 2, 3 and 4 is applied, the difference between the size of the display area and the size of the output frame at the actual screen update time can be reduced.

Hereinafter, a situation in which the size of the display area of the display of the electronic device expands, contracts, and then expands again will be described with reference to FIG. 10 . 10 is a graph 1000 for explaining an effect of an electronic device according to an exemplary embodiment.

Referring to FIG. 10 , the x-axis of the graph 1000 of FIG. 10 may represent time (msec), and the y-axis may represent a ratio of the size of the current display area to the size of the entire display area. The first graph line 1010 may indicate the size of the display area of the electronic device that is changed over time. According to an embodiment, the graph 1000 of FIG. 10 may be a result of simulating a case in which the size of the display area of the display of the electronic device is expanded, reduced, and then expanded again.

The second graph line 1020 may indicate the size of the screen updated according to the detection of the changed size of the screen. The third graph line 1030 may indicate the size of the screen to be updated which is predicted according to the detection of the size of the changed screen when the embodiment described with reference to FIGS. 2, 3, and 4 is applied.

Referring to the graph 1000 of FIG. 10 , the third graph line 1030 in the case of applying the embodiment described with reference to FIGS. 2, 3, and 4 is larger than the display display area of the second graph line 1020 . It can be seen that there is little difference from the first graph line 1010 indicating the actual size of . That is, when the embodiment described above with reference to FIGS. 2, 3 and 4 is applied, the difference between the size of the display area and the size of the output frame at the actual screen update time can be reduced.

11 is a view of an electronic device according to another exemplary embodiment of the present disclosure, illustrating a state in which a portion of a flexible display is accommodated in a second structure. 12 is a view of an electronic device according to another exemplary embodiment of the present disclosure, illustrating a state in which most of the flexible display is exposed to the outside of a second structure;

The state shown in FIG. 11 may be defined as that the first structure 1101 is closed with respect to the second structure 1102 , and the state shown in FIG. 5 is the first structure 1102 with respect to the second structure 1102 . Structure 1101 may be defined as open. According to an embodiment, a “closed state” or an “open state” may be defined as a state in which the electronic device is closed or opened.

11 and 12 , the electronic device 1100 may include a first structure 1101 and a second structure 1102 movably disposed within the first structure 1101 . In some embodiments, it may be interpreted as a structure in which the first structure 1101 is slidably disposed on the second structure 1102 . According to an embodiment, the first structure 1101 may be arranged to reciprocate by a predetermined distance in a direction shown with respect to the second structure 1102 , for example, a direction indicated by an arrow η.

According to various embodiments, the first structure 1101 may be referred to as, for example, a first housing, a slide unit, or a slide housing, and may be disposed reciprocally on the second structure 1102 . In an embodiment, the second structure 1102 may be referred to as, for example, a second housing, a main unit, or a main housing, and may accommodate various electrical and electronic components such as a main circuit board or a battery. A portion of the display 1103 (eg, the first area A1 ) may be mounted on the first structure 1101 . In some embodiments, another portion (eg, second area A2 ) of display 1103 , as first structure 1101 moves (eg, slides) relative to second structure 1102 , may 2 may be accommodated inside the structure 1102 (eg, a slide-in operation) or exposed to the outside of the second structure 1102 (eg, a slide-out operation) .

According to various embodiments, the first structure 1101 may include a first plate 1111a (eg, a slide plate), and the first structure surface F1 formed by including at least a portion of the first plate 1111a. ) and a second structure surface F2 facing in a direction opposite to the first structure surface F1 may be included. According to an embodiment, the second structure 1102 includes a second plate (eg, the second plate 1121a of FIG. 6 (eg, a rear case)) and a first sidewall 1123a extending from the second plate 1121a. ), a second sidewall 1123b extending from the first sidewall 1123a and the second plate 1121a, and extending from the first sidewall 1123a and the second plate 1121a, parallel to the second sidewall 1123b A third sidewall 1123c and/or a rear plate 1121b (eg, a rear window) may be included. In some embodiments, the second sidewall 1123b and the third sidewall 1123c may be formed perpendicular to the first sidewall 1123a. According to one embodiment, the second plate 1121a , the first sidewall 1123a , the second sidewall 1123b , and the third sidewall 1123c are configured to receive (or surround) at least a portion of the first structure 1101 . ) one side (eg, a front face) may be formed to be open. For example, the first structure 1101 is coupled to the second structure 1102 in a state of being at least partially wrapped, and the first surface F1 or the second surface F2 and the first surface F1 or the second surface F2 are guided by the second structure 1102 . It can slide in a parallel direction, for example, in the direction of the arrow ①.

According to various embodiments, the second sidewall 1123b or the third sidewall 1123c may be omitted. According to an exemplary embodiment, the second plate 1121a, the first sidewall 1123a, the second sidewall 1123b, and/or the third sidewall 1123c may be formed as separate structures and combined or assembled. The rear plate 1121b may be coupled to surround at least a portion of the second plate 1121a. In some embodiments, the back plate 1121b may be formed substantially integrally with the second plate 1121a. According to an embodiment, the second plate 1121a or the rear plate 1121b may cover at least a portion of the flexible display 1103 . For example, the flexible display 1103 may be at least partially accommodated inside the second structure 1102 , and the second plate 1121a or the rear plate 1121b may be accommodated inside the second structure 1102 . A portion of the display 1103 may be covered.

According to various embodiments, the first structure 1101 is attached to the second structure 1102 in a direction parallel to the second plate 1121a (eg, the rear case) and the second sidewall 1123b (eg, direction ①). is movable in an open state and a closed state with respect to the first structure 1101 is placed at a first distance from the first sidewall 1123a in the closed state, and is greater than the first distance from the first sidewall 1123a in the open state It can be moved to be placed at a second distance. In some embodiments, in the closed state, the first structure 1101 may be positioned to surround a portion of the first sidewall 1123a.

According to various embodiments, the electronic device 1100 includes at least one of the display 1103 , the key input device 1141 , the connector hole 1143 , the audio modules 1145a , 1145b , 1147a , 1147b , or the camera module 1149 . may include. Although not shown, the electronic device 1100 may further include an indicator (eg, an LED device) or various sensor modules.

According to various embodiments, the display 1103 may include a first area A1 and a second area A2 . In an embodiment, the first area A1 may extend substantially across at least a portion of the first structure surface F1 to be disposed on the first structure surface F1 . The second area A2 extends from the first area A1 and is inserted or accommodated into the inside of the second structure 1102 (eg, a housing) according to the sliding movement of the first structure 1101 , or the second area A2 . It may be exposed to the outside of the structure 1102 . As will be described later, the second area A2 is substantially moved while being guided by a roller (eg, the roller 1151 of FIG. 6 ) mounted on the second structure 1102 and accommodated in the second structure 1102 . or may be exposed. For example, while the first structure 1101 slides, a portion of the second area A2 may be deformed into a curved shape at a position corresponding to the roller 1151 .

According to various embodiments, when the first structure 1101 moves from the closed state to the open state when viewed from the top of the first plate 1111a (eg, a slide plate), the second area A2 gradually becomes the second area A2. 2 While being exposed to the outside of the structure 1102 , a substantially plane may be formed together with the first area A1 . The display 1103 may be coupled to or disposed adjacent to a touch sensing circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and/or a digitizer that detects a magnetic field type stylus pen. In an embodiment, the second area A2 may be at least partially accommodated inside the second structure 1102 , and a portion of the second area A2 may be included in the state shown in FIG. 11 (eg, a closed state). can be exposed to the outside. In some embodiments, regardless of the closed state or the open state, a portion of the exposed second area A2 may be located on the roller 1151 , and at a position corresponding to the roller 1151 , the second area A2 ) can maintain a curved shape.

The key input device 1141 may be disposed on the second sidewall 1123b or the third sidewall 1123c of the second structure 1102 . Depending on the appearance and usage state, the illustrated key input device 1141 may be omitted or the electronic device 1100 may be designed to include additional key input device(s). In some embodiments, the electronic device 1100 may include a key input device (not shown), for example, a home key button or a touch pad disposed around the home key button. According to another embodiment, at least a portion of the key input device 1141 may be located in one area of the first structure 1101 .

According to various embodiments, the connector hole 1143 may be omitted, and may accommodate a connector (eg, a USB connector) for transmitting and receiving power and/or data to and from an external electronic device. Although not shown, the electronic device 1100 may include a plurality of connector holes 1143 , and some of the plurality of connector holes 1143 may function as connector holes for transmitting and receiving audio signals to and from an external electronic device. . In the illustrated embodiment, the connector hole 1143 is disposed on the third sidewall 1123c, but the present invention is not limited thereto, and the connector hole 1143 or an unillustrated connector hole is disposed on the first sidewall 1123a or It may be disposed on the second sidewall 1123b.

According to various embodiments, the audio modules 1145a, 1145b, 1147a, and 1147b may include speaker holes 1145a and 1145b or microphone holes 1147a and 1147b. One of the speaker holes 1145a and 1145b may be provided as a receiver hole for a voice call, and the other may be provided as an external speaker hole. The microphone holes 1147a and 1147b may include a microphone for acquiring an external sound, and in some embodiments, a plurality of microphones to detect the direction of the sound. In some embodiments, the speaker holes 1145a and 1145b and the microphone holes 1147a and 1147b may be implemented as a single hole, or a speaker may be included without the speaker holes 1145a and 1145b (eg, a piezo speaker). According to one embodiment, the speaker hole indicated by the reference number "1145b" is disposed in the first structure 1101 and can be used as a receiver hole for a voice call, and the speaker hole indicated by the reference number "1145a" (eg, outside speaker hole) or microphone holes 1147a and 1147b may be disposed in the second structure 1102 (eg, one of the side surfaces 1123a, 1123b, and 1123c).

The camera module 1149 is provided in the second structure 1102 and may photograph a subject in a direction opposite to the first area A1 of the display 1103 . The electronic device 1100 may include a plurality of camera modules 1149 . For example, the electronic device 1100 may include a wide-angle camera, a telephoto camera, or a close-up camera, and according to an embodiment, may measure a distance to a subject by including an infrared projector and/or an infrared receiver. The camera module 1149 may include one or more lenses, an image sensor, and/or an image signal processor. Although not shown, the electronic device 1100 may further include a camera module (eg, a front camera) for photographing a subject in a direction opposite to the first area A1 of the display 1103 . For example, the front camera may be disposed around the first area A1 or in an area overlapping the display 1103 , and when disposed in the area overlapping the display 1103 , transmits through the display 1103 . You can take a picture of a subject.

According to various embodiments, an indicator (not shown) of the electronic device 1100 may be disposed on the first structure 1101 or the second structure 1102 , and includes a light emitting diode to provide state information of the electronic device 1100 . can be provided as a visual signal. A sensor module (not shown) of the electronic device 1100 may generate an electrical signal or data value corresponding to an internal operating state of the electronic device 1100 or an external environmental state. The sensor module may include, for example, a proximity sensor, a fingerprint sensor, or a biometric sensor (eg, an iris/face recognition sensor or an HRM sensor). In other embodiments, the sensor module may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. It may further include at least one.

An electronic device according to an embodiment of the present disclosure includes a flexible display and a processor operatively connected to the flexible display, wherein the processor detects that the size of the display area is changed at a first time As a result, the size of the display area after a delay time has elapsed is estimated (estimated), a second frame is formed with the calculated size of the display area, and at a second time when the formation of the second frame is completed, the size of the display area is The size is identified, and a first difference value is obtained that is a difference value between the size of the second frame and the size of the display area at the second time. A second difference value that is a difference value between the size and the size of the display area at the second time is obtained, and when the first difference value is smaller than the second difference value, the second frame is placed on the display area of the flexible display output, and when the first difference value is greater than or equal to the second difference value, the display area may be configured to maintain the output of the first frame.

According to an embodiment of the present disclosure, the delay time corresponds to a time taken from when the electronic device detects a signal for changing the size of the display area until the frame corresponding to the signal is reflected on the display area. can be

According to an embodiment of the present disclosure, the processor may be configured to calculate the size of the display area after the elapse of the delay time based on an average rate of change in size of the display area for a past predetermined time.

According to an embodiment of the present disclosure, when the first difference value is smaller than the second difference value, the processor may display the second frame on the display area of the flexible display at the next screen update time of the second time. It can be configured to output.

According to an embodiment of the present disclosure, when the first difference value is greater than or equal to the second difference value, the processor may be configured not to update the display area at the next screen update time of the second time. have

According to an embodiment of the present disclosure, the processor may be configured to correct the calculated size of the display area to the maximum size when the calculated size of the display area is greater than the maximum size of the display area.

According to an embodiment of the present disclosure, when the calculated size of the display area is smaller than the minimum size of the display area, the processor may be configured to correct the calculated size of the display area to the minimum size.

According to an embodiment of the present disclosure, the first frame may be a frame that is updated at a previous display area update time of the second time and is being output to the display area.

According to an embodiment of the present disclosure, the size of the display area may be changed automatically, semi-automatically, or manually.

According to an embodiment of the present disclosure, the processor may be configured to detect a signal for changing the size of the display area at a predetermined period.

The method for updating a display area of an electronic device including a flexible display according to an embodiment of the present disclosure includes calculating the size of the display area after a delay time elapses by detecting that the size of the display area is changed at a first time, A second frame is formed with the calculated size of the display area, the size of the display area is identified at a second time when the formation of the second frame is completed, and the size of the second frame and the size of the second frame at the second time. A first difference value that is a difference value of the size of the display area is obtained, and a second value that is a difference value between the size of the first frame being output to the display area at the second time and the size of the display area at the second time. a difference value is obtained, and when the first difference value is smaller than the second difference value, the second frame is output to the display area of the flexible display, and the first difference value is greater than or equal to the second difference value In this case, the output of the first frame may be maintained in the display area.

According to an embodiment of the present disclosure, the delay time corresponds to a time taken from when the electronic device detects a signal for changing the size of the display area until the frame corresponding to the signal is reflected on the display area. can be

According to an embodiment of the present disclosure, the size of the display area after the elapse of the delay time may be calculated based on an average display area size change rate for a past predetermined time.

According to an embodiment of the present disclosure, when the first difference value is smaller than the second difference value, the second frame may be output to the display area of the flexible display at the next screen update time of the second time. .

According to an embodiment of the present disclosure, when the first difference value is greater than or equal to the second difference value, the display area may not be updated at the next screen update time of the second time.

According to an embodiment of the present disclosure, when the calculated size of the display area is greater than the maximum size of the display area, the calculated size of the display area may be corrected to the maximum size.

According to an embodiment of the present disclosure, when the calculated size of the display area is smaller than the minimum size of the display area, the calculated size of the display area may be corrected to the minimum size.

According to an embodiment of the present disclosure, the first frame may be a frame that is updated at a previous display area update time of the second time and is being output to the display area.

According to an embodiment of the present disclosure, the size of the display area may be changed automatically, semi-automatically, or manually.

According to an embodiment of the present disclosure, a signal for changing the size of the display area may be detected at a predetermined period.

Claims (20)

In an electronic device,
flexible display; and
a processor operatively coupled to the flexible display, the processor comprising:
estimating the size of the display area after a delay time elapses according to detecting that the size of the display area is changed at a first time;
forming a second frame with the calculated size of the display area;
identifying the size of the display area at a second time when the formation of the second frame is completed;
obtaining a first difference value that is a difference value between the size of the second frame and the size of the display area at the second time;
obtaining a second difference value that is a difference value between the size of the first frame being output to the display area at the second time and the size of the display area at the second time;
outputting the second frame to the display area of the flexible display when the first difference value is smaller than the second difference value;
and maintain the output of the first frame in the display area when the first difference value is greater than or equal to the second difference value. The method according to claim 1,
The delay time corresponds to a time taken from when the electronic device detects a signal for changing the size of the display area until the frame corresponding to the signal is reflected on the display area. The electronic device of claim 1 , wherein the processor is configured to calculate the size of the display area after the elapse of the delay time based on an average rate of change in size of the display area for a past predetermined time. The method according to claim 1, wherein the processor is configured to, when the first difference value is smaller than the second difference value, output the second frame to the display area of the flexible display at a next screen update time of the second time, electronic device. The electronic device of claim 1 , wherein the processor is configured not to update the display area at a next screen update time of the second time when the first difference value is greater than or equal to the second difference value. The electronic device of claim 1 , wherein the processor is configured to correct the calculated size of the display area to the maximum size when the calculated size of the display area is greater than the maximum size of the display area. The electronic device of claim 1 , wherein the processor is configured to correct the calculated size of the display area to the minimum size when the calculated size of the display area is smaller than the minimum size of the display area. The method according to claim 1,
The first frame is a frame that is updated at a previous display area update time of the second time and is being output to the display area. The method according to claim 1,
The size of the display area is changed automatically, semi-automatically, or manually. The electronic device of claim 1 , wherein the processor is configured to detect a signal for a size change of the display area at a predetermined period. A method of updating a display area of an electronic device including a flexible display, the method comprising:
calculating the size of the display area after a delay time has elapsed according to detecting that the size of the display area is changed at a first time;
forming a second frame with the calculated size of the display area;
identifying the size of the display area at a second time when the formation of the second frame is completed;
obtaining a first difference value that is a difference value between the size of the second frame and the size of the display area at the second time;
obtaining a second difference value that is a difference value between the size of the first frame being output to the display area at the second time and the size of the display area at the second time;
outputting the second frame to the display area of the flexible display when the first difference value is smaller than the second difference value;
and maintaining the output of the first frame in the display area when the first difference value is greater than or equal to the second difference value. 12. The method of claim 11,
The delay time corresponds to a time taken from when the electronic device detects a signal for changing the size of the display area until the frame corresponding to the signal is reflected on the display area. 12. The method of claim 11,
and calculating the size of the display area after the elapse of the delay time based on an average rate of change in size of the display area during a past predetermined time. 12. The method of claim 11,
When the first difference value is smaller than the second difference value, the second frame is outputted to the display area of the flexible display at the next screen update time of the second time. 12. The method of claim 11,
When the first difference value is greater than or equal to the second difference value, the display area is not updated at a next screen update time of the second time. 12. The method of claim 11,
and correcting the calculated size of the display area to the maximum size when the calculated size of the display area is greater than the maximum size of the display area. 12. The method of claim 11,
and correcting the calculated size of the display area to the minimum size when the calculated size of the display area is smaller than the minimum size of the display area. 12. The method of claim 11,
The method of claim 1, wherein the first frame is a frame that has been updated at a previous display area update time of the second time and is being output to the display area. 12. The method of claim 11,
The display area updating method, wherein the size of the display area is changed automatically, semi-automatically, or manually. 12. The method of claim 11,
A method for updating a display area, wherein a signal for changing the size of the display area is sensed at a predetermined period.

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