# US 9,753,318 B2 · Switchable type touch display device and method of driving the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,753,318 B2 - Document ID: US9753318B2 - Status: Granted - Kind: B2 - Application number: 14/506,831 - Filed: 2014-10-06 - Published: 2015-06-25 - Granted: 2017-09-05 - Earliest claimed: 2013-12-20 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Chung-Hwan An; Chang-Ho Lee; Keong-Jin Lee; Joo-Ah Kim; Tae-Young Heo - Web page: https://patentgrep.com/patent/US9753318B2 ## CPC - G02F 1/13338: {Input devices, e.g. touch panels} - G02B 30/27: involving lenticular arrays - G02B 30/28: involving active lenticular arrays - G02B 30/29: characterised by the geometry of the lenticular array, e.g. slanted arrays, irregular arrays or arrays of varying shape or size - G02F 1/133526: {Lenses, e.g. microlenses or Fresnel lenses} - G06F 3/0412: {Digitisers structurally integrated in a display} - 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} - H04N 13/305: using lenticular lenses, e.g. arrangements of cylindrical lenses - 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 - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A switchable type touch display device includes: a display panel displaying an image; a touch polarization control panel over the display panel, wherein the touch polarization control panel includes: first and second touch polarization control substrates; a first electrode on an inner surface of the first touch polarization control substrate; a second electrode on an inner surface of the second touch polarization control substrate; a third electrode on an outer surface of the second touch polarization control substrate; and a polarization control liquid crystal layer between the first and second touch polarization control substrates; and a lens panel over the touch polarization control panel. ## Claims ### Claim 1 A switchable type touch display device, comprising: a display panel displaying an image; a touch polarization control panel over the display panel, wherein the touch polarization control panel comprises: first and second touch polarization control substrates facing and spaced apart from each other; a first electrode on an inner surface of the first touch polarization control substrate; a second electrode on an inner surface of the second touch polarization control substrate, the second electrode having a shape of a plurality of bars parallel to and spaced apart from each other; a third electrode on an outer surface of the second touch polarization control substrate, the third electrode having a shape of a plurality of bars parallel to and spaced apart from each other, and the third electrode crossing the second electrode; and a polarization control liquid crystal layer between the first and second touch polarization control substrates; and a lens panel over the touch polarization control panel, wherein the lens panel refracts or straightly transmits a light passing through the touch polarization control panel according to a polarization state of the light. ### Claim 2 (depends on 1) The switchable type touch display device according to claim 1, wherein a reference voltage, a transmission voltage and a reception voltage are applied to the first, second and third electrodes, respectively, and wherein the transmission voltage is one of a first voltage for detecting a touch and the reference voltage and the reception voltage is the reference voltage when the switchable type touch display device displays a two-dimensional image. ### Claim 3 (depends on 2) The switchable type touch display device according to claim 2, wherein the first voltage has a square wave greater than the reference voltage by a first voltage difference, and the first voltage is applied during a time period of about 1/1000 to about 1/10000 of a single frame which is a unit time period for displaying an image. ### Claim 4 (depends on 1) The switchable type touch display device according to claim 1, wherein a reference voltage, a transmission voltage and a reception voltage are applied to the first, second and third electrodes, respectively, and wherein the transmission voltage is one of second and third voltages for controlling polarization and fourth and fifth voltages for detecting a touch and the reception voltage is one of the second and third voltages when the switchable type touch display device displays a three-dimensional image. ### Claim 5 (depends on 4) The switchable type touch display device according to claim 4, wherein the second voltage has a square wave greater than the reference voltage by a second voltage difference, wherein the third voltage is a square wave smaller than the reference voltage by the second voltage difference, wherein the fourth voltage is a square wave greater than the second voltage by a first voltage difference, wherein the fifth voltage is a square wave greater third voltage by the first voltage difference, and wherein the fourth and fifth voltages are applied during a time period of about 1/1000 to about 1/10000 of a single frame which is a unit time period for displaying an image.