# US 2018/0024736 A1 · Electronic device and touch panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0024736 A1 - Document ID: US20180024736A1 - Status: Published application - Kind: A1 - Application number: 15/643,491 - Filed: 2017-07-07 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: ASUSTeK COMPUTER INC. - Applicants: ASUSTeK COMPUTER INC. - Inventors: Hung-Yi LIN; Chin-Wen LIN; Jung-Hsing WANG - Web page: https://patentgrep.com/patent/US20180024736A1 ## CPC - 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 - G02B 6/0011: {the light guides being planar or of plate-like form} - G06F 1/1662: {Details related to the integrated keyboard} - G06F 1/1692: {the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders} - G06F 3/0202: {Constructional details or processes of manufacture of the input device} - G06F 3/0216: {Arrangements for ergonomically adjusting the disposition of keys of a keyboard (for keyboards integrated in a laptop computer G06F1/1664)} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 3/04847: Interaction techniques to control parameter settings, e.g. interaction with sliders or dials - G06F 3/04883: for inputting data by handwriting, e.g. gesture or text - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An electronic device is provided. The electronic device comprises a touch panel and a controller. The touch panel includes a touch layer, a sensing layer, and a light emitting layer. The touch layer includes a dielectric surface. The sensing layer is configured below the touch layer and configured to sense a touch operation on the dielectric surface to generate a touch signal. The light emitting layer includes a plurality of light emitting units. The light emitting layer is configured below the touch layer. The controller is electrically connected to the touch panel and configured to generate a control signal to turn on or off the light emitting units to generate at least a virtual key. A touch panel is also provided. ## Claims ### Claim 1 An electronic device comprising: a touch panel including: a touch layer including a dielectric surface; and a sensing layer disposed below the touch layer and configured to sense a touch control operation on the dielectric surface to generate a touch signal; a light emitting layer including a plurality of light emitting units and disposed below the touch layer; and a controller electrically connected to the touch panel and configured to generate a control signal to turn on or off the light emitting units in order to generate at least a virtual key. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein the controller is configured to receive and analyze the touch signal to generate an adjustment control signal, and the controller is configured to turn the light emitting units on or off according to the adjustment control signal to adjust the virtual key. ### Claim 3 (depends on 1) The electronic device according to claim 1, wherein the light emitting units are light emitting diodes, and the light emitting layer is a direct-type LED array. ### Claim 4 (depends on 2) The electronic device according to claim 2, wherein the controller enters an adjustment mode according to an adjustment command, the controller analyzes the touch signal received in the adjustment mode to determine a plurality of touch points on the touch layer that correspond to the touch operation, the controller is configured to generate the adjustment control signal according to positions of the touch points, and the controller is further configured to turn the light emitting units on or off according to the adjustment control signal to adjust the position or the size of the virtual key. ### Claim 5 (depends on 1) The electronic device according to claim 1, wherein the light emitting layer further includes a light guiding layer with a light guide plate and a pattern layer, the pattern layer is configured above the light guide plate, and the light emitting units are configured on at least two adjacent side edges of the light guiding layer. ### Claim 6 (depends on 2) The electronic device according to claim 2, wherein the controller is coupled to the sensing layer, the sensing layer is coupled to the light emitting layer, the controller is configured to send the control signal or the adjustment control signal to the light emitting layer via the sensing layer to turn the light emitting units on or off. ### Claim 7 (depends on 2) The electronic device according to claim 2, wherein the controller is coupled to the sensing layer and the light emitting layer, respectively, and the controller is configured to send the control signal or the adjustment control signal to the light emitting layer to turn on or off the light emitting units. ### Claim 8 (depends on 1) The electronic device according to claim 1, wherein when the controller obtains information of a current application program, and the control signal is generated to turn on/off the light emitting units according to the information of the current application program, the virtual key corresponding to the information of the current application program is present. ### Claim 9 (depends on 1) The electronic device according to claim 1, wherein the touch panel further includes a light filtering layer, the light filtering layer is configured between the touch layer and the sensing layer, between the sensing layer and the light emitting layer, or above the touch layer. ### Claim 10 (depends on 1) The electronic device according to claim 1, wherein the sensing layer is configured above or below the light emitting layer. ### Claim 11 A touch panel, adapted to an electronic device, the touch panel comprising: a touch layer including a dielectric surface; a sensing layer disposed below the touch layer and configured to sense a touch operation on the dielectric surface to generate a touch signal; and a light emitting layer including a plurality of light emitting units and disposed below the touch layer, the light emitting units are turned on or turned off according to a control signal from the electronic device to generate at least a virtual key. ### Claim 12 (depends on 11) The touch panel according to claim 11, wherein the light emitting units are turned on or off according to an adjustment control signal from the electronic device that corresponds to the touch signal, to adjust the virtual key. ### Claim 13 (depends on 11) The touch panel according to claim 11, wherein the light emitting units are a plurality of light emitting diodes, and the light emitting layer is a direct-type LED array. ### Claim 14 (depends on 12) The touch panel according to claim 12, wherein the light emitting units are turned on or turned off individually according to the adjustment control signal that correspond to a plurality of touch points on the touch layer, to adjust the position or the size of the virtual key. ### Claim 15 (depends on 11) The touch panel according to claim 11, wherein the light emitting layer further includes a light guiding layer with a light guide plate and a pattern layer, the pattern layer is configured on the light guide plate, and the light emitting units are configured on at least two adjacent side edges of the light guiding layer. ### Claim 16 (depends on 12) The touch panel according to claim 12, wherein the sensing layer is coupled with the light emitting layer and a controller of the electronic device, the light emitting layer is configured to receive the control signal or the adjustment control signal from the controller via the sensing layer, to turn the light emitting units on or off. ### Claim 17 (depends on 12) The touch panel according to claim 12, wherein the light emitting layer is coupled to a controller of the electronic device and the sensing layer, respectively, the light emitting layer is configured to receive the control signal or the adjustment control signal from the controller. ### Claim 18 (depends on 11) The touch panel according to claim 11, wherein the control signal is corresponding to information of a current application program, and the light emitting units are turned on or turned off according to the control signal, to present the virtual key that is corresponding to the information of the current application program. ### Claim 19 (depends on 11) The touch panel according to claim 11, wherein the touch panel further includes a light filtering layer, the light filtering layer is disposed between the touch layer and the sensing layer, or between the sensing layer and the light emitting layer, or above the touch layer. ### Claim 20 (depends on 11) The touch panel according to claim 11, wherein the sensing layer is disposed above or below the light emitting layer.