# US 12,015,726 B2 · Mobile terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,726 B2 - Document ID: US12015726B2 - Status: Granted - Kind: B2 - Application number: 17/565,078 - Filed: 2021-12-29 - Published: 2022-04-21 - Granted: 2024-06-18 - Earliest claimed: 2020-04-08 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Insu Song; Timothy Kang; Kyuho Lee; Minsoo Kim - Web page: https://patentgrep.com/patent/US12015726B2 ## CPC - H04M 1/0237: {Sliding mechanism with one degree of freedom} - F16H 19/04: comprising a rack - 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} - H04M 1/0268: {including a flexible display panel} - H04M 1/185: {Improving the shock resistance of the housing, e.g. by increasing the rigidity} - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - F16H: GEARING - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Disclosed herein is a mobile terminal switchable from a first state to a second state by extending in the first direction, including a first frame, a second frame movable from the first frame in the first direction or a second direction opposite to the first direction, a slide frame movable in the first direction or the second direction with respect to the second frame, and a support link having one end hinged to the first frame and an opposite end hinged to the second frame, the support link having a variable length. The mobile terminal may maintain a flat state regardless of change in the state of the mobile terminal by preventing the front surface from being separated or sagging. ## Claims ### Claim 1 A mobile terminal comprising: a first frame; a second frame movable with respect to the first frame in a first direction such that the mobile terminal is switched from a first state to a second state or in a second direction opposite to the first direction such that the mobile terminal is switched from the second state to the first state; wherein the first frame comprises: a first front portion positioned at a front portion of the mobile terminal; a first rear portion positioned at a rear portion of the mobile terminal; a side portion positioned between the first front portion and the first rear portion; and a middle fastening portion configured to fasten the first front portion to the first rear portion, wherein the side portion and the middle fastening portion are positioned on the first frame to maintain a gap between the first front portion and the first rear portion. ### Claim 2 (depends on 1) The mobile terminal of claim 1, wherein the second frame comprises: a second front portion positioned at a rear side of the first front portion of the mobile terminal in the first state; a second rear portion positioned at a rear side of the first rear portion of the mobile terminal; and a middle slot formed in the first front portion and extendable in the first direction to prevent the middle fastening portion from obstructing the second frame from moving in the first direction. ### Claim 3 (depends on 2) The mobile terminal of claim 2, further comprising: a slide frame coupled to the second rear portion of the mobile terminal such that the slide frame is movable in the first direction or the second direction with respect to the second frame; a flexible display comprising a first region coupled to the first frame, a second region coupled to the slide frame, and a third region positioned between the first region and the second region, wherein the third region curves around the second frame; and a support link comprising a first end hinged to the first frame and a second end hinged to the second frame, wherein the support link is extendable to support the third region of the flexible display at a rear side of the third region when the second frame moves in the first direction. ### Claim 4 (depends on 3) The mobile terminal of claim 3, further comprising: a driving unit configured to move the second frame, wherein the middle slot is positioned between the support link and the driving unit in a third direction perpendicular to the first direction. ### Claim 5 (depends on 3) The mobile terminal of claim 3, wherein the support link is arranged such that the first end and the second end are positioned in a third direction perpendicular to the first direction in the first state, and wherein the support link is diagonally arranged with respect to the first direction and is elongated in the second state. ### Claim 6 (depends on 5) The mobile terminal of claim 5, further comprising: a plurality of rollers positioned at an end of the second frame, wherein the plurality of rollers face the first direction and are configured to rotate about an axis extendable in the third direction, wherein the support link is positioned between the plurality of rollers in the first state. ### Claim 7 (depends on 3) The mobile terminal of claim 3, wherein the support link further comprises: a first link coupled to the first frame; and a second link coupled to the second frame, wherein the first link is slide-coupled to the second link. ### Claim 8 (depends on 7) The mobile terminal of claim 7, further comprising: a first link rail formed on one side of the first link or the second link, wherein the first link rail comprises a T-shape cross section; and a second link rail formed on an opposite side of the first link or the second link, wherein the second link rail comprises a T-shape cross section that fits into the first link. ### Claim 9 (depends on 7) The mobile terminal of claim 7, wherein each of the first link and the second link comprises a stop protrusion that is fastened in the first state and the second state. ### Claim 10 (depends on 7) The mobile terminal of claim 7, wherein the second frame further comprises: a front portion positioned at a front portion of the mobile terminal; and a rear portion positioned at a rear portion of the mobile terminal, wherein the first link and the second link have a thickness corresponding to a distance between the front portion and the rear portion. ### Claim 11 A mobile terminal comprising: a first frame; a second frame movable with respect to the first frame in a first direction such that the mobile terminal is switched from a first state to a second state or in a second direction opposite to the first direction such that the mobile terminal is switched from the second state to the first state; a flexible display comprising a variable region configured to change from a first position positioned at a rear side of the mobile terminal in the first state to a second position at a front side of the mobile terminal in the second state; and a support link comprising a first end hinged to the first frame and a second end hinged to the second frame, wherein the support link is extendable to support the variable region of the flexible display at a rear side of the variable region when the second frame moves in the first direction. ### Claim 12 (depends on 11) The mobile terminal of claim 11, wherein the support link is arranged such that the first end and the second end are positioned in a third direction perpendicular to the first direction in the first state, and wherein the support link is diagonally arranged with respect to the first direction and is elongated in the second state. ### Claim 13 (depends on 12) The mobile terminal of claim 12, further comprising: a plurality of rollers positioned at an end of the second frame, wherein the plurality of rollers face the first direction and are configured to rotate about an axis extendable in the third direction, wherein the support link is positioned between the plurality of rollers in the first state. ### Claim 14 (depends on 11) The mobile terminal of claim 11, wherein the support link further comprises: a first link coupled to the first frame; and a second link coupled to the second frame, wherein the first link is slide-coupled to the second link. ### Claim 15 (depends on 14) The mobile terminal of claim 14, further comprising: a first link rail formed on one side of the first link or the second link, wherein the first link rail comprises a T-shape cross section; and a second link rail formed on an opposite side of the first link or the second link, wherein the second link rail comprises a T-shape cross section that fits into the first link. ### Claim 16 (depends on 14) The mobile terminal of claim 14, wherein each of the first link and the second link comprises a stop protrusion that is fastened in the first state and the second state. ### Claim 17 (depends on 14) The mobile terminal of claim 14, wherein the second frame comprises: a front portion positioned at a front portion of the mobile terminal; and a rear portion positioned at a rear portion of the mobile terminal, wherein the first link and the second link have a thickness corresponding to a distance between the front portion and the rear portion. ### Claim 18 (depends on 11) The mobile terminal of claim 11, wherein the first frame comprises: a first front portion positioned at a front portion of the mobile terminal; a first rear portion positioned at a rear portion of the mobile terminal; a side portion positioned between the first front portion and the first rear portion; and a middle fastening portion configured to fasten the first front portion to the first rear portion, wherein the side portion and the middle fastening portion are positioned on the first frame to maintain a gap between the first front portion and the first rear portion. ### Claim 19 (depends on 18) The mobile terminal of claim 18, wherein the second frame comprises: a second front portion positioned at a rear side of the first front portion of the mobile terminal in the first state; a second rear portion positioned at a rear side of the first rear portion of the mobile terminal; and a middle slot formed in the first front portion and extendable in the first direction to prevent the middle fastening portion from obstructing the second frame from moving in the first direction. ### Claim 20 (depends on 19) The mobile terminal of claim 19, further comprising: a driving unit configured to move the second frame, wherein the middle slot is positioned between the support link and the driving unit in a third direction perpendicular to the first direction.