# US 12,192,399 B2 · Mobile terminal and control method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,399 B2 - Document ID: US12192399B2 - Status: Granted - Kind: B2 - Application number: 17/640,446 - Filed: 2019-09-06 - Published: 2022-10-13 - Granted: 2025-01-07 - Earliest claimed: 2019-09-06 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Changmok Kim; Byungnam Roh; Junho Seo; Jinhee Lee; Sangyoung Cho; Eunkyung Choi - Web page: https://patentgrep.com/patent/US12192399B2 ## CPC - G09G 3/035: {for flexible display surfaces} - H04M 1/72484: wherein functions are triggered by incoming communication events - G06F 1/1624: {with sliding enclosures, e.g. sliding keyboard or display} - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 3/0481: based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance - G06F 3/04886: by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus - H04M 1/0237: {Sliding mechanism with one degree of freedom} - H04M 1/0268: {including a flexible display panel} - H04M 1/72469: for operating the device by selecting functions from two or more displayed items, e.g. menus or icons - G06F 2203/04803: Split screen, i.e. subdividing the display area or the window area into separate subareas - G09G 2340/0442: Handling or displaying different aspect ratios, or changing the aspect ratio - G09G 2340/0492: Change of orientation of the displayed image, e.g. upside-down, mirrored - G09G 2340/14: Solving problems related to the presentation of information to be displayed - G09G 2354/00: Aspects of interface with display user - G09G 2380/02: Flexible displays - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract The present disclosure provides a mobile terminal capable of expanding a display unit, and a control method therefor. When an event occurs, the mobile terminal of the present disclosure provides a user with convenience by enabling the user to select whether to expand the display unit upon execution of the event. Specifically, the event can be the execution of a specific application or the reception of a notification related to a call or a message. ## Claims ### Claim 1 A mobile terminal, comprising: a body comprising a first frame structured to slideably engage a second frame to permit extending and retracting of the body by relative sliding motion between the first frame and the second frame; a flexible display comprising a first display portion located on a front side of the body and a second display portion located on a rear side of the body, wherein a size of the first display portion increases and a size of the second display portion decreases according to relative sliding motion between the first frame and the second frame in a first direction, and wherein the size of the first display portion decreases and the size of the second display portion increases according to relative sliding motion between the first frame and the second frame in a second direction; and a controller configured to: identify an occurrence of an event; and cause the relative sliding motion between the first frame and the second frame to change the size of the first display portion relative to the size of the second display portion, wherein the event comprises a notification related to a received call or a received message, wherein the controller is further configured to: cause the flexible display to display a first option menu enabling a selection as to whether to expand the first display portion, based on the call being a video call, and wherein the first option menu comprises an option of receiving a call only in an expansion area of the first display portion and an option of receiving a call over an entire area of the first display portion, including the expansion area. ### Claim 2 (depends on 1) The mobile terminal of claim 1, wherein the event comprises selection of a specific application of the mobile terminal by a user. ### Claim 3 (depends on 2) The mobile terminal of claim 2, wherein the controller is further configured to: cause the first display portion to display a first selection menu enabling a selection as to whether to expand the first display portion, based on user selection of the specific application, wherein the event further comprises selection of one option from the first selection menu. ### Claim 4 (depends on 2) The mobile terminal of claim 2, wherein the size of the first display portion is changeable to one of a plurality of different sizes, and wherein the controller is further configured to cause the first display portion to display a second selection menu enabling selection of one of the plurality of sizes, and wherein the event further comprises selection of one option from the second selection menu. ### Claim 5 (depends on 3) The mobile terminal of claim 3, wherein the controller is further configured to cause the flexible display to display a menu enabling a user to set the specific application requiring expansion of the flexible display. ### Claim 6 (depends on 1) The mobile terminal of claim 1, wherein the controller is further configured to: cause the first display portion to display an option menu enabling a selection as to whether to expand the first display portion, based on the notification. ### Claim 7 (depends on 1) The mobile terminal claim 1, wherein the size of the first display portion is changeable to one of a plurality of different sizes, and wherein the controller is further configured to: cause the first display portion to display an option menu enabling selection of one of the plurality of sizes, based on the notification. ### Claim 8 (depends on 1) The mobile terminal of claim 1, wherein the controller is further configured to: cause the first display portion to display a second option menu comprising an option of disconnecting a call while reducing a size of the expansion area and an option of disconnecting a call while maintaining the size of the expansion area, based on the video call being received while the first display portion is in an expanded state. ### Claim 9 (depends on 1) The mobile terminal of claim 1, wherein the controller is further configured to: cause the first display portion to display a most recent task at an area other than the expansion area, based on selection of the option of receiving a call only in the expansion area. ### Claim 10 (depends on 1) The mobile terminal of claim 1, wherein the controller is further configured to perform a function corresponding to the event and simultaneously cause a change in the size of the first display portion. ### Claim 11 (depends on 1) The mobile terminal of claim 1, further comprising: a driving unit configured to change a size of the body, and wherein the controller is further configured to: control the driving unit to cause the relative sliding motion between the first frame and the second frame to increase the size of the first display portion and decrease the size of the second display portion. ### Claim 12 A mobile terminal, comprising: a body comprising a first frame structured to slideably engage a second frame to permit manual extension and retraction of the body by relative sliding motion between the first frame and the second frame; a flexible display comprising a first display portion located on a front side of the body and a second display portion located on a rear side of the body, wherein a size of the first display portion increases and a size of the second display portion decreases according to relative sliding motion between the first frame and the second frame in a first direction, and wherein the size of the first display portion decreases and the size of the second display portion increases according to relative sliding motion between the first frame and the second frame in a second direction; and a controller configured to: cause the first display portion to display information associated with an application executing at the mobile terminal, wherein the event comprises selection of a picture or a video in a social network service (SNS) application, and wherein the controller is further configured to cause the flexible display to display the picture or the video only on an expansion area of the first display portion, wherein the expansion area is an area of the flexible display that was not located on the front side of the body prior to the occurrence of the event.