# US 2014/0192017 A1 · Electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192017 A1 - Document ID: US20140192017A1 - Status: Published application - Kind: A1 - Application number: 14/150,152 - Filed: 2014-01-08 - Published: 2014-07-10 - Earliest claimed: 2013-01-09 - Assignees: Lenovo (Beijing) Limited - Applicants: Lenovo (Beijing) Co., Ltd. - Inventors: Guang Yang - Web page: https://patentgrep.com/patent/US20140192017A1 ## CPC - G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position} - G06F 1/1618: {the display being foldable up to the back of the other housing with a single degree of freedom, e.g. by 360° rotation over the axis defined by the rear edge of the base enclosure} - G06F 1/1647: {including at least an additional display (G06F1/1692 takes precedence)} - G06F 3/1423: {controlling a plurality of local displays, e.g. CRT and flat panel display} - G09G 3/34: by control of light from an independent source - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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) ## Abstract An electronic device is provided, the electronic device includes a first display screen and a second display screen, the first display screen and the second display screen are articulated to the same side of a control system, and can rotate up and down, and can display page information, the page information displayed by the first display screen and the second display screen is the same or different according to a selection of a user. The two display screens of a display apparatus can display page information for the user in multiple display forms and display modes, which greatly enriches the display manner of the electronic device and improves user experience. ## Claims ### Claim 1 An electronic device, comprising a first display screen and a second display screen; wherein the first display screen and the second display screen are articulated to the same side of a control system; the first display screen and the second display screen are configured to, in a case that both the first display screen and the second display screen are in an operating state, display page information, and the page information displayed by the first display screen and the second display screen is the same or different according to a selection signal of a user. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein the first display screen is an electronic paper screen, and the first display screen is rotatable about an axis at the articulation position and is fixable at any position within a rotation range of the first display screen; and the second display screen is an organic light-emitting diode display screen, and the second display screen rotatable about an axis at the articulation position and is fixable at any position within a rotation range of the second display screen. ### Claim 3 (depends on 1) The electronic device according to claim 1, wherein the second display screen is a transparent light-emitting diode display screen. ### Claim 4 (depends on 3) The electronic device according to claim 3, wherein the first display screen and the transparent light-emitting diode display screen are configured to cooperate with each other to display page information in the case that both the first display screen and the transparent light-emitting diode display screen are fixed at a position with the same angle. ### Claim 5 (depends on 4) The electronic device according to claim 4, wherein the first display screen is configured to display first page information; the transparent light-emitting diode display screen is configured to display second page information; the first page information is different from the second page information. ### Claim 6 (depends on 4) The electronic device according to claim 4, wherein the transparent light-emitting diode display screen is configured to display page information; the first display screen is configured to provide a color background to the transparent light-emitting diode display screen. ### Claim 7 (depends on 3) The electronic device according to claim 3, wherein the transparent light-emitting diode display screen comprises a camera; the camera is configured to, in a case that an open angle of the first display screen is greater than or equal to a preset threshold and an open angle of the transparent light-emitting diode display screen is within a preset range, collect an image in a field of vision of the camera and send the image to the control system; and the transparent light-emitting diode display screen is configured to display information related to the image after the image is identified by the control system. ### Claim 8 (depends on 1) The electronic device according to claim 1, wherein the second display screen is a transparent touch display screen; the transparent touch display screen is configured to display an image of an input apparatus of the control system in the case that the transparent touch display screen is fixed onto the input apparatus, to receive triggering information of triggering made to the image by the user and to send the triggering information to the control system to make an operation of the user identified by the control system according to the triggering information and the correspondence between the image and the input apparatus. ### Claim 9 (depends on 8) The electronic device according to claim 8, wherein the triggering information comprises: capacitive triggering information, infrared triggering information or ultrasonic triggering information. ### Claim 10 (depends on 1) The electronic device according to claim 1, further comprising: a first hall-effect switch corresponding to the first display screen and a second hall-effect switch corresponding to the second display screen; wherein the first hall-effect switch is configured to sense an open angle of the first display screen and the second hall-effect switch is configured to sense an open angle of the second display screen, and a display mode of the first display screen and a display mode of the second display screen are controlled by hall-effect switch and the second hall-effect switch according to different combinations of the open angle of the first display screen and the open angle of the second display screen.