# US 2017/0097709 A1 · Touch sensitive device fior mobile apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0097709 A1 - Document ID: US20170097709A1 - Status: Published application - Kind: A1 - Application number: 15/125,218 - Filed: 2014-03-10 - Published: 2017-04-06 - Earliest claimed: 2014-03-10 - Assignees: Vertu Limited - Applicants: Vertu Corporation Limited - Inventors: Karthik GURUCHANDRAN - Web page: https://patentgrep.com/patent/US20170097709A1 ## CPC - G06F 3/0443: {using a single layer of sensing electrodes} - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - 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 3/0445: {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} - G02F 1/133331: {Cover glasses} - G02F 2201/122: having a particular pattern - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 ## Abstract A touch sensitive device for a mobile apparatus, the device having a length in a direction of a first axis and a width in a direction of a second axis, wherein the length is greater than or equal to the width, the device comprising a substrate comprising sapphire with a first refractive index value, the sapphire comprising sapphire crystallographic structure having a plurality of crystal planes, wherein a first crystal plane axis is configured to be perpendicular to the first and the second axis; a first transparent electrode pattern layer with a second refractive index value configured to form a plurality of touch sensing elements parallel to the first axis; a second transparent electrode pattern layer with a third refractive index value configured to form a plurality of touch sensing elements parallel to the second axis, wherein the first transparent electrode pattern layer and the second transparent electrode pattern layer configured to provide touch information using capacitive coupling; and an index matching layer arranged between the substrate and at least one the transparent electrode pattern layers configured to match the first refractive index value and at least one of the second refractive index value and the third refractive index value; wherein at least one of the transparent electrode pattern layers being integral to the substrate. ## Claims ### Claim 1 A touch sensitive device for a mobile apparatus, the device having a length in a direction of a first axis and a width in a direction of a second axis, wherein the length is greater than or equal to the width, the device comprising: a substrate comprising sapphire with a first refractive index value, the sapphire comprising sapphire crystallographic structure having a plurality of crystal planes, wherein a first crystal plane axis is configured to be perpendicular to the first and the second axis, wherein a first crystal plane axis is configured to be perpendicular to the first and the second axis, a second crystal plane axis is configured to be parallel to the and the touch sensitive device having a length in a direction of the M-axis and a width in a direction of the C-axis; a first transparent electrode pattern layer with a second refractive index value configured to form a plurality of touch sensing elements parallel to the first axis; a second transparent electrode pattern layer with a third refractive index value configured to form a plurality of touch sensing elements parallel to the second axis, wherein the first transparent electrode pattern layer and the second transparent electrode pattern layer configured to provide touch information using capacitive coupling; and an index matching layer arranged between the substrate and at least one of the transparent electrode pattern layers configured to match the first refractive index value and at least one of the second refractive index value and the third refractive index value; wherein at least one of the transparent electrode pattern layers being integral to the substrate. ### Claim 2 (depends on 1) The touch sensitive device of claim 1, wherein the sapphire comprising sapphire crystallographic structure having a crystal plane, the crystal plane comprising at least one of the first and the second transparent electrode pattern layers. ### Claim 3 (depends on 1) The touch sensitive device of claim 1, wherein the first and the second transparent electrode pattern layers being isolated using an isolating layer. ### Claim 4 (depends on 1) The touch sensitive device of claim 1, wherein a portion of the second transparent electrode pattern layer comprising at least one jumper configured to cross over a portion of the first transparent electrode pattern layer to form the second transparent electrode pattern layer. ### Claim 5 (depends on 4) The touch sensitive device of claim 4, wherein at least one of the transparent electrode pattern layers and the jumper comprising at least one of the following: indium tin oxide (ITO), graphene and silver nano wires. ### Claim 6 (depends on 1) The touch sensitive device of claim 1, wherein the second refractive index value and the third refractive index value are same. ### Claim 7 (depends on 1) The touch sensitive device of claim 1, wherein the second refractive index value and the third refractive index value are not same. ### Claim 8 (depends on 1) The touch sensitive device of claim 1, wherein the first transparent electrode pattern layer comprising indium tin oxide (ITO) and the second transparent electrode pattern layer comprising at least one of graphene and silver nano wires. ### Claim 9 (depends on 1) The touch sensitive device of claim 1, further comprising a metal track layer arranged in an edge area of the touch sensitive device for the first and the second transparent electrode pattern layer, configured to provide connection for the first and the second transparent electrode pattern layers. ### Claim 10 (depends on 9) The touch sensitive device of claim 9, further comprising a non-transparent mask layer arranged on the edge area of the touch sensitive device, wherein the non-transparent mask layer configured to hide the first and the second metal track. ### Claim 11 (depends on 1) The touch sensitive device of claim 1, wherein the metal track layer comprising a first and a second metal track. ### Claim 12 (depends on 1) The touch sensitive device of claim 1, wherein the touch sensitive device further comprises at least one of the following: a display of the mobile apparatus; a cover part of the mobile apparatus; and a touch sensitive screen of the mobile apparatus. ### Claim 13 (canceled) ### Claim 14 (depends on 1) The touch sensitive device of claim 1, wherein the plurality of crystal planes comprising: A-plane with A-axis configured to be a normal axis of the A-plane; C-plane with C-axis configured to be a normal axis of the C-plane, the C-axis being perpendicular to the A-axis; and M-plane with M-axis configured to be a normal axis of the M-plane, the M-axis being perpendicular to the A-axis and the C-axis. ### Claim 15 (depends on 14) The touch sensitive device of claim 14, wherein the first crystal plane axis is the A-axis, the second crystal plane axis is the M-axis and the third crystal plane axis is the C-axis. ### Claim 16 (depends on 14) The touch sensitive device of claim 14, wherein a fourth crystal plane axis is configured to be perpendicular to the first crystal plane axis and inclined to the second and the third crystal plane axes. ### Claim 17 (depends on 14) The touch sensitive device of claim 14, wherein the touch sensitive device having a length in a direction of the M-axis and a width in a direction of the C-axis, wherein the length is greater than or equal to the width. ### Claim 18 (depends on 14) The touch sensitive device of claim 14, wherein the plurality of crystal planes being arranged to match a LCD top polarizer angle of the display and configured to circularly or elliptically polarize outgoing light. ### Claim 19 A method for providing a touch sensitive device for a mobile apparatus, the device having a length in a direction of a first axis and a width in a direction of a second axis, wherein the length is greater than or equal to the width, the method comprising: providing a substrate comprising sapphire with a first refractive index value, the sapphire comprising sapphire crystallographic structure having a plurality of crystal planes, wherein a first crystal plane axis is configured to be perpendicular to the first and the second axis, wherein a first crystal plane axis is configured to be perpendicular to the first and the second axis, a second crystal plane axis is configured to be parallel to the first axis and a third crystal plane axis is configured to be parallel to the second axis, and the touch sensitive device having a length in a direction of the M-axis and a width in a direction of the C-axis; providing a first transparent electrode pattern layer with a second refractive index value configured to form a plurality of touch sensing elements parallel to the first axis; providing a second transparent electrode pattern layer with a third refractive index value configured to form a plurality of touch sensing elements parallel to the second axis, wherein the first transparent electrode pattern layer and the second transparent electrode pattern layer configured to provide touch information using capacitive coupling; and providing an index matching layer arranged between the substrate and at least one the transparent electrode pattern layers configured to match the first refractive index value and at least one of the second refractive index value and the third refractive index value; wherein at least one of the transparent electrode pattern layers being integral to the substrate. ### Claim 20 (depends on 1) A mobile apparatus comprising a touch sensitive device of claim 1. ### Claim 21 (depends on 20) The mobile apparatus of claim 20, wherein a higher strength axis of a sapphire element is aligned with a higher stress direction of the mobile apparatus.