# US 2019/0171332 A1 · Smartphone > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0171332 A1 - Document ID: US20190171332A1 - Status: Published application - Kind: A1 - Application number: 16/257,222 - Filed: 2019-01-25 - Published: 2019-06-06 - Earliest claimed: 2015-07-27 - Assignees: HiDeep Inc. - Applicants: HiDeep Inc. - Inventors: Seyeob Kim; Bonkee Kim; Sangsic Yoon; Young ho Cho - Web page: https://patentgrep.com/patent/US20190171332A1 ## CPC - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/133528: {Polarisers} - G02F 1/134336: {Matrix} - G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - H04B 1/3888: Arrangements for carrying or protecting transceivers - G02F 1/133302: {Rigid substrates, e.g. inorganic substrates} - G02F 1/133345: {Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence)} - G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)} - G02F 2201/121: common or background - G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G06F 2203/04105: Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position - G09G 2300/0426: Layout of electrodes and connections - 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) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04B: TRANSMISSION ## Abstract A smartphone may include a first cover layer and an LCD panel located under the first cover layer. The smartphone may include a backlight unit which may be located under the LCD panel. The smartphone may include a touch sensor which may sense touch in a capacitive manner. The backlight unit may include a pressure sensor and a spacer layer. The pressure sensor may include one or more electrodes formed in a single layer attached on the second cover layer and spaced apart from the reflective sheet. A driving signal may be applied to the touch sensor. A touch position may be detected by a sensing signal which may be output from the touch sensor. A magnitude of a touch pressure may be detected based on a change amount of capacitance which may be output from the pressure sensor. ## Claims ### Claim 1 A smartphone comprising: a first cover layer; an LCD panel which is located under the first cover layer and comprises a liquid crystal layer, and a first glass layer and a second glass layer between which the liquid crystal layer is placed; a backlight unit which is located under the LCD panel and comprises an optical film, a light source, a reflective sheet and a second cover layer; and a touch sensor which senses touch in a capacitive manner, wherein the backlight unit further comprises a pressure sensor and a spacer layer, the pressure sensor comprising a plurality of electrodes formed in a single layer attached on the second cover layer and spaced apart from the reflective sheet, between the reflective sheet and the second cover layer, wherein a driving signal is applied to the touch sensor and a touch position is detected by a sensing signal which is output from the touch sensor, wherein a magnitude of a touch pressure is detected based on a change amount of capacitance which is output from the pressure sensor and which is changed according to a distance between the pressure sensor and an electrode located within the LCD panel, wherein the LCD panel is bent according to the touch, and wherein the change amount of the capacitance output from the pressure sensor changes as the LCD panel bends. ### Claim 2 (depends on 1) The smartphone of claim 1, wherein the electrode located within the LCD panel is composed of indium tin oxide (ITO). ### Claim 3 (depends on 1) The smartphone of claim 1, wherein the electrode located within the LCD panel is a common electrode within the LCD panel. ### Claim 4 (depends on 1) The smartphone of claim 1, wherein the touch sensor comprises a plurality of drive electrodes and a plurality of receiving electrodes and at least one of the drive electrodes and the receiving electrodes of the touch sensor are located between the first glass layer and the second glass layer. ### Claim 5 (depends on 1) The smartphone of claim 1, wherein the LCD panel further comprises a first polarizer layer and a second polarizer layer between which the first glass layer, the liquid crystal layer and the second glass layer are placed, and wherein the touch sensor is partially located between the first glass layer and the first polarizer layer. ### Claim 6 (depends on 1) The smartphone of claim 1, further comprising an air gap between the LCD panel and the optical film. ### Claim 7 (depends on 1) The smartphone of claim 1, wherein the plurality of electrodes constitute a plurality of channels. ### Claim 8 (depends on 2) The smartphone of claim 2, wherein the touch sensor comprises a plurality of drive electrodes and a plurality of receiving electrodes and at least one of the drive electrodes and the receiving electrodes of the touch sensor are located between the first glass layer and the second glass layer. ### Claim 9 (depends on 3) The smartphone of claim 3, wherein the touch sensor comprises a plurality of drive electrodes and a plurality of receiving electrodes and at least one of the drive electrodes and the receiving electrodes of the touch sensor are located between the first glass layer and the second glass layer. ### Claim 10 (depends on 2) The smartphone of claim 2, wherein the LCD panel further comprises a first polarizer layer and a second polarizer layer between which the first glass layer, the liquid crystal layer and the second glass layer are placed, and wherein the touch sensor is partially located between the first glass layer and the first polarizer layer. ### Claim 11 (depends on 3) The smartphone of claim 3, wherein the LCD panel further comprises a first polarizer layer and a second polarizer layer between which the first glass layer, the liquid crystal layer and the second glass layer are placed, and wherein the touch sensor is partially located between the first glass layer and the first polarizer layer. ### Claim 12 (depends on 2) The smartphone of claim 2, further comprising an air gap between the LCD panel and the optical film. ### Claim 13 (depends on 3) The smartphone of claim 3, further comprising an air gap between the LCD panel and the optical film. ### Claim 14 (depends on 2) The smartphone of claim 2, wherein the plurality of electrodes constituting a plurality of channels. ### Claim 15 (depends on 3) The smartphone of claim 3, wherein the plurality of electrodes constitute a plurality of channels.