US20190079638A1 - Touch device - Google Patents

Touch device Download PDF

Info

Publication number
US20190079638A1
US20190079638A1 US16/191,050 US201816191050A US2019079638A1 US 20190079638 A1 US20190079638 A1 US 20190079638A1 US 201816191050 A US201816191050 A US 201816191050A US 2019079638 A1 US2019079638 A1 US 2019079638A1
Authority
US
United States
Prior art keywords
touch surface
frame
frame element
plate
touch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/191,050
Other languages
English (en)
Inventor
Aleksander Kocovski
Hakan Bergstrom
Jens Thorvinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FlatFrog Laboratories AB
Original Assignee
FlatFrog Laboratories AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=62492002&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20190079638(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by FlatFrog Laboratories AB filed Critical FlatFrog Laboratories AB
Publication of US20190079638A1 publication Critical patent/US20190079638A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • This invention relates in general to the field of optical touch sensitive systems. More particularly, the invention relates to a curved plate and an assembly for holding a plate of the system, such as a glass plate, relative to a panel such that curvature of the plate is controlled. The invention also relates to a method for assembling a plate of an optical touch sensitive system with a panel (such as a display panel) in such a way that curvature is controlled.
  • a plurality of optical emitters and optical receivers are arranged around the periphery of a touch surface to create a grid of intersecting light paths above the touch surface. Each light path extends between a respective emitter/receiver pair. An object that touches the touch surface will block certain ones of the light paths. Based on the identity of the receivers detecting a blocked light path, a processor can determine the location of the intercept between the blocked light paths. This type of system is only capable of reliably detecting the location of one object (single-touch detection). Further, the required number of emitters and receivers, and thus cost and complexity, increases rapidly with increasing surface area and/or spatial resolution of the touch panel.
  • each optical emitter emits a beam of light that diverges across the touch surface, and each beam is detected by more than one optical receiver positioned around the periphery of the touch surface.
  • These systems typically direct light to travel across the surface of the touch surface at a height of up to 5 mm.
  • the touch surface is a glass plate.
  • distortions in the plate have a disproportionally large effect on the light signal. Therefore, glass plates as used in previously known above surface optical touch systems are unsuitable when the light is transmitted closer to the plate, since the accuracy of the system is impaired by the distortions in the plate.
  • a frame for assembly of the plate of the optical touch sensitive system and a panel, such as an LCD panel may introduce distortion in the form of uncontrolled warpage, i.e. a twist or curve in the plate is introduced even if it is usually flat.
  • the uncontrolled warpage may even block the light transmitted across the plate. This is due to uncontrolled twisting of the frame as such when it is attached to the panel.
  • an improved frame assembly for holding a plate of an optical touch sensitive system relative to a panel would be advantageous and in particular allowing for improved precision, increased compactness, cost-effectiveness, and/or controlled curvature would be advantageous. Further, a touch panel having a shape conducive to transmitting as much light from the emitters as possible to the detectors is needed.
  • embodiments of the present invention preferably seek to mitigate, alleviate or eliminate one or more deficiencies, disadvantages or issues in the art, such as the above-identified, singly or in any combination by providing an assembly, a method for assembling, and a kit of frame elements according to the appended patent claims.
  • a first embodiment of the invention describes an assembly for holding and controlling curvature of a plate for an optical touch sensitive system, comprising a first frame element extending in a first plane and configured to extend at least partially around a panel; at least one second frame element extending in a second plane and forming a support portion for the plate, and at least one spacing element positioned at least partially between the support portion and the first frame element, the spacing element being configured to control a curvature of the first frame element, and wherein the at least one second frame element is configured to engage the plate at the support portion, is attached to the first frame element, and wherein the shape and/or position of the second frame element is controlled by the curvature of the first frame element with said spacing element, to control a curvature of the plate.
  • a second embodiment of the invention describes a method for assembling a panel and a plate for an optical touch sensitive system, comprising: providing a first frame element extending in a first plane and configured to extend at least partially around a panel; providing at least one second frame element forming a support portion for the plate; supporting the plate by the support portion; attaching the second frame element to the first frame element such that the support portion extends at least partially in a second plane generally opposite at least a portion of the first frame element and is spaced apart from the first plane; and controlling a curvature of the first frame element with a spacing element attached to the first frame element and thereby tilting the support portion to control a curvature of the plate.
  • a third embodiment of the invention describes a kit of frame elements for assembling a panel and a plate for a touch sensitive system, comprising: a first frame element extending in a first plane; at least one second frame element forming a support portion for the plate and being attachable to the first frame element, and a spacing element adjustably attachable to the first frame element; wherein at least a portion of the support portion is tiltable, by the spacing element, relative to the first frame element to extend in the second plane, which is curved.
  • Some embodiments of the invention provide for controlling curvature of a plate for an optical touch sensitive system such that it does not occur when the plate is assembled with a panel. This prevents distortion in the plate from affecting a light signal transmitted across the plate, which in turn allows improvements in accuracy and lower light budget of the system. Additionally, or alternatively, embodiments provide for controlling curvature such that the field of view, for a detector receiving light from a light emitter of the touch sensitive system, is increased compared to a substantially flat plate. Again, the improved field of view provides for improved accuracy of the touch sensitive system and allows for a better light budget. Furthermore, embodiments provide for an assembly that is compact at the same time as curvature may be controlled. Also, the curvature may be controlled without contacting the center of the plate.
  • a fourth embodiment of the invention describes a touch sensing apparatus, comprising a touch surface; a set of emitters arranged around the touch surface to emit first beams of light to propagate across the touch surface, a set of light detectors arranged around the touch surface to receive light from the first set of emitters, wherein each light detector is arranged to receive light from more than one emitter; a processing element configured to determine, based on output signals of the set of light detectors, the position of an object on the touch surface, wherein the touch surface is curved in a first axis according to a first parabola.
  • FIG. 1 is a top view of the first frame element showing cross-sectional axes A-A and B-B;
  • FIGS. 2 a -2 d are cross-sectional views of embodiments of assemblies
  • FIG. 3 a is a schematic illustration showing the cross-section axis B-B of FIG. 1 of the assembly with the second frame element relative to the first frame element and holding the plate in a flat plane;
  • FIG. 3 b is a schematic illustration showing the cross-section axis A-A of FIG. 1 of the assembly with the second frame element relative to the first frame element and holding the plate in a flat plane;
  • FIG. 3 c is a schematic view (cross section) showing the cross-section axis B-B of FIG. 1 of the assembly with the second frame element warped relative to the first frame element and holding the plate in a curved plane that is concave;
  • FIG. 3 d is a schematic view (cross section) showing the cross-section axis A-A of FIG. 1 of the assembly with the second frame element warped relative to the first frame element and holding the plate in a curved plane that is concave;
  • FIG. 4 a is a perspective view of the first frame element
  • FIG. 4 b is a schematic illustration of the panel in a convex shape and the frame of the first frame element in a concave shape, including plate 2 also controlled into a concave shape;
  • FIG. 4 c is a side view showing screws 116 a and 116 b;
  • FIGS. 5 a -5 h are side views and perspective views of an embodiment of the assembly comprising a screw arrangement for configuring frame shape;
  • FIGS. 6 is a schematic cross section from a first direction of an embodiment of the assembly
  • FIG. 7 is a schematic side-view of another embodiment for providing curvature of plate 2 ;
  • FIG. 8 shows an isometric view of a variation of the embodiment of FIGS. 5 a - 5 g;
  • FIG. 9 is a diagram showing a top down view of an optical touch system and corresponding detection lines
  • FIG. 10 a shows an isometric view of a flat touch surface of an optical touch system
  • FIG. 10 b shows a section view of an optical touch system with a flat touch surface
  • FIG. 11 a shows an isometric view of a touch surface of an optical touch system having a curved profile in the x-axis
  • FIG. 11 b shows a section view along the x-axis of an optical touch system with a touch surface having a curved profile in the x-axis;
  • FIG. 11 c shows a section view along the x-axis of an optical touch system with a touch surface having a curved profile in the x-axis;
  • FIG. 11 d shows an example of types of warpage that a touch panel may exhibit.
  • FIG. 12 a shows top view of a touch surface of an optical touch system
  • FIG. 12 b shows an isometric view of a touch surface of an optical touch system having a curved profile in the x-axis and a curved profile in the y-axis;
  • FIG. 12 c shows a section view along the x-axis of an optical touch system with a touch surface having a curved profile in the x-axis and a curved profile in the y-axis;
  • FIG. 12 d shows a section view along the y-axis of an optical touch system with a touch surface having a curved profile in the x-axis and a curved profile in the y-axis;
  • FIG. 13 a shows a section render of light emitted from a point at an edge of a curved touch surface and propagating across the curved touch surface to be received at a detector at an opposite edge of the touch surface;
  • FIG. 13 b shows a graph of light emitted from a point at an edge of a curved touch surface and received at a detector at an opposite edge of the touch surface with respect to the angle of the emitter light;
  • FIG. 14 a shows a section render of light emitted from a point at an edge of a curved touch surface and propagating across the curved touch surface to be received at a detector at an opposite edge of the touch surface;
  • FIG. 14 b shows a graph of light emitted from a point at an edge of a curved touch surface and received at a detector at an opposite edge of the touch surface with respect to the angle of the emitter light;
  • FIG. 15 a shows a section render of light emitted from a point at an edge of a curved touch surface and propagating across the curved touch surface to be received at a detector at an opposite edge of the touch surface;
  • FIG. 15 b shows a graph of light emitted from a point at an edge of a curved touch surface and received at a detector at an opposite edge of the touch surface with respect to the angle of the emitter light;
  • FIG. 16 a shows a section render of light emitted from a point at an edge of a curved touch surface and propagating across the curved touch surface to be received at a detector at an opposite edge of the touch surface;
  • FIG. 16 b shows a graph of light emitted from a point at an edge of a curved touch surface and received at a detector at an opposite edge of the touch surface with respect to the angle of the emitter light;
  • FIG. 17 a shows a section render of light emitted from a point at an edge of a curved touch surface and propagating across the curved touch surface to be received at a detector at an opposite edge of the touch surface;
  • FIG. 17 b shows a graph of light emitted from a point at an edge of a curved touch surface and received at a detector at an opposite edge of the touch surface with respect to the angle of the emitter light;
  • FIG. 18 a shows a curvature of a real touch surface vs a parabolic curved surface along an x-axis
  • FIG. 18 b shows a deviation between a real touch surface vs a parabolic curved surface along an x-axis
  • FIG. 19 a shows a curvature of a real touch surface vs a parabolic curved surface along an x-axis
  • FIG. 19 b shows a deviation between a real touch surface vs a parabolic curved surface along an x-axis
  • FIG. 20 a shows top view of displacement contours for a touch surface according to an embodiment
  • FIG. 20 b shows curvature of a touch surface along an x-axis according to the embodiment of FIG. 20 a;
  • FIG. 20 c shows curvature of a touch surface along a y-axis according to the embodiment of FIG. 20 a;
  • FIG. 20 d shows curvature of a touch surface along a diagonal line according to the embodiment of FIG. 20 a;
  • FIG. 21 a shows top view of displacement contours for a touch surface according to another embodiment
  • FIG. 21 b shows curvature of a touch surface along an x-axis line according to the embodiment of FIG. 21 a;
  • FIG. 21 c shows curvature of a touch surface along a y-axis line according to the embodiment of FIG. 21 a;
  • FIG. 21 d shows curvature of a touch surface along a diagonal line according to the embodiment of FIG. 21 a.
  • a plate 2 of the system such as a glass plate may be arranged opposite a panel 1 , such as an LCD panel or additional frame.
  • the plate 2 is normally substantially flat.
  • the perimeter of the plate 2 after integration is a concern: the four sides/edges of the plate 2 must all be plane or slightly concave as seen from the touch surface, i.e. the side of the plate 2 above which light is transmitted.
  • An aspect of this is to ensure that the mechanical parts that hold or support the perimeter of the plate 2 are free from convexity.
  • there are several components that are involved in holding the plate 2 back cover, carriers, edge cover, screw bosses etc.
  • the stiffer component of the assembly the more it will govern the final shape of the plate 2 .
  • the frame that holds the plate 2 at the edge/perimeter may introduce some twist (the corners will not lay perfectly on a flat plane) to the plate. Twist may induce convexity along the plate diagonals and should thus be minimized or avoided.
  • the twist tolerance depends, e.g., on glass specification, product, size, shape of integrated glass perimeter, and on how a VESA mount is attached.
  • FIG. 1 shows an embodiment of a frame assembly 100 , 200 that prevents inducement of convexity along the plate, such as along the plate edges and/or diagonals. Some embodiments avoid convexity and may even induce concavity to further improve the touch system.
  • Frame 109 is formed from first frame element 102 . Attachment element 112 and spacing element 116 are described in the embodiments below.
  • an assembly 100 , 200 which is configured to hold or support the plate 2 and the panel 1 , applies a controlled force to the plate 2 such that curvature of the plate 2 is controlled.
  • the force applies a torque to a support portion 101 a , 101 b for the plate 2 .
  • the force is substantially straight and perpendicular to the plate 2 .
  • the embodiments of FIGS. 2 a -2 c , 3 a -3 d , 4 a -4 c , and 5 a -5 g will be described separately. However, these embodiments may be combined to provide further embodiments, such as the combination illustrated in FIGS. 6 a - 6 c.
  • FIGS. 2 a -2 d illustrate embodiments wherein the frame assembly 100 comprises a first frame element 102 and at least one second frame element 103 a , 103 b .
  • the first frame element 102 may form a rear bracket frame that extends at least partially over the backside of the panel 1 .
  • the second frame element 103 a , 103 b may form a holder or support bracket.
  • second frame element 103 a , 103 b may extend along at least a portion of a perimeter of the plate 2 and/or the panel 1 .
  • Separate second frame elements 103 a , 103 b may extend at least partially along the perimeter of different sides of the plate 2 and/or panel 1 .
  • two second frame elements 103 a , 103 b may extend along opposing perimeters of the plate 2 and/or panel 1 .
  • four second frame elements 103 a , 103 b may extend along the perimeter of the plate 2 and/or panel 1 , i.e. one along each side of a rectangular plate 2 and/or panel 1 .
  • the panel 1 may be held between the first frame element 102 and the second frame element 103 a , 103 b .
  • the plate 2 may be supported or held at a first side of a portion of the second frame element 103 a , 103 b forming the support portion 101 a , 101 b .
  • the panel 1 may be held or supported by a second side of the support portion 101 a , 101 b , which forms a support portion for the panel 1 .
  • An adhesive 104 such as an adhesive tape, may be arranged between the support portion 101 a , 101 b and the plate 2 .
  • a gasket 105 may be arranged between the support portion 101 a , 101 b and the panel 1 .
  • elements 102 , 103 are formed from a single piece.
  • the second frame element 103 a , 103 b may be attached to the first frame element 102 .
  • the second frame element 103 a and 103 b is attached to the first frame element 102 by at least one attachment member 106 a , 106 b , such as a screw, a weld, a rivet etc. Therefore, the second frame element 103 a , 103 b may be rigidly attached to the first frame element 102 .
  • the first frame element 102 may comprise a flange 107 a , 107 b that extends at the perimeter of the first frame element 102 .
  • the second frame element 103 a , 103 may comprise a flange 108 a , 108 b .
  • the flange 107 a , 107 b of the first frame element 102 may be arranged in abutment with the flange 108 a , 108 b of the second frame element 103 a , 103 b .
  • the flange 107 a , 107 b of the first frame element 102 may be held together with the flange 108 a , 108 b of the second frame element 103 a , 103 b by the attachment member 106 a , 106 b.
  • the first frame element 102 may form a frame 109 (shown in FIG. 1 ) that extends in a first plane.
  • the frame 109 is configured to extend at least partially around a first side of a panel 1 .
  • the first side of the panel 1 may be the backside of the panel 1 .
  • the frame 109 has a width, such as 3 -10 cm.
  • the frame 109 may extend from the edges of the first side towards the center of the first side of the panel 1 . Therefore, the frame 109 may be rectangular, and made from a single piece of material.
  • the assembly 100 may comprise at least one support area 110 a , 110 b for supporting a back cover 111 .
  • the support area 110 a , 110 b may extend in a plane that is substantially parallel to the first plane, in which the frame 109 extends.
  • the support area 110 a , 110 b may be located further away from the support portion 101 a , 101 b of the second frame element 103 a , 103 b than the frame 109 , such that the frame 109 and the back cover 111 are spaced apart.
  • the support area 110 a , 110 b is provided between the flange 107 a , 107 b and the frame 109 of the first frame element 102 .
  • the back cover 111 may be attached to the support area 110 a , 110 b , e.g. by attachment elements, such as screws.
  • the support area 110 a , 110 b is provided by the flange 108 a , 108 b of the second frame element 103 a , 103 b .
  • the flange 107 a , 107 b of the first frame element 102 may be connected to the second frame element 103 a , 103 b between the flange 108 a , 108 b and the support portion 101 a , 101 b of the second frame element 103 a , 103 b.
  • the second frame element 103 a , 103 b may form the support portion 101 a , 101 b .
  • the second frame element 103 a , 103 b may form an elongated member that is at least partly L-shaped in cross-section.
  • the second frame element 103 a , 103 b may extend along the perimeter of the panel 1 , and wrap around the perimeter of the panel such that the support portion 101 a , 101 b extends at least partially in a second plane generally opposite the frame 109 and spaced apart from the first plane.
  • the second frame element 103 a , 103 b is configured to extend at least partially at a second side of the panel 1 , e.g. at a front side of the panel 1 .
  • the second frame element 103 a , 103 b has a first portion and a second portion.
  • the first portion may be provided at an angle relative to the second portion.
  • the second portion may form the support portion 101 a , 101 b and be configured to extend in the second plane opposite the frame 109 .
  • the first portion may extend between the second portion and the first frame element 102 .
  • the first portion may extend along the edge or side surface of the plate 2 when assembled.
  • the first frame element 102 may be connected to the first portion of the second frame element 103 a , 103 b .
  • the first portion may be substantially perpendicular to the second portion.
  • the first frame element 102 may be attached to the first portion of the second frame element 103 a , 103 b such they are fixed relative to each other. Furthermore, the second frame element 103 is tiltable relative to the first frame element 102 . A force applied to the first frame element 102 is transferred to the second frame element 103 such that the support portion 101 a , 101 b is tilted towards the first frame element 102 . Thus, a torque may control tilt of the second portion of the second frame element 103 a , 103 b , i.e.
  • the angle of tilt of the support portion 101 a , 101 b is controlled to be neutral, i.e. the angle of tilt of the support portion 101 a , 101 b is controlled such that it is substantially parallel with the panel 1 and/or controls the plate 2 to be in a flat plane, as is illustrated in FIGS. 3 a and 3 b .
  • the angle of tilt of the support portion 101 a , 101 b is controlled to be negative relative to the touch surface, i.e.
  • the angle of tilt of the support portion 101 a , 101 b is controlled such that the free end of the support portion 101 a , 101 b is tilted towards the frame 109 , as is illustrated in FIGS. 3 c and 3 d .
  • the plate 2 is given a slightly concave shape, i.e. in the direction from the touch surface of the plate 2 towards the panel 1 .
  • curvature is controlled such that the field of view, for a detector receiving light from a light emitter of the touch sensitive system, is improved since convexity in the plate is avoided. Again, improved field of view provides for improved accuracy of the touch sensitive system and allows for lower light budget.
  • the assembly is compact at the same time as curvature may be controlled. Also, curvature may be controlled without contacting the center of the plate. When the concavity is applied, the sensitivity of the system may be even further improved.
  • FIGS. 2 a -2 d and 3 a -3 d illustrate embodiments of an attachment element 112 for attaching the first frame element 102 to the panel.
  • a plurality of attachment elements 112 (e.g. as shown in triplicate as elements 112 a , 112 b , and 112 c ) may be arranged around the frame 109 , such as at each corner of the frame 109 , which is illustrated as circles in FIG. 4 a .
  • Each attachment element may comprise a group of screws 112 a , 112 b , 112 c , 113 a , 113 b .
  • Each screw may be arranged in a hole of the frame 109 , which may be threaded.
  • Each attachment element may comprise at least two screws 112 a , 112 b , 112 c , 113 a , 113 b .
  • At least one of the screws 112 a , 113 a may be arranged to displace the frame 109 away from panel 1 , which is indicated with an arrow in FIG. 2 d e.g. by having a thread in the frame 109 and pushing on the panel 1 .
  • At least one other of the screws 112 b , 112 c , 113 b may be arranged to displace the frame 109 towards the panel 1 , which is also indicated with an arrow in FIG. 2 d . e.g. by having a thread in the panel and a hole in frame 109 .
  • FIG. 2 a illustrates an embodiment wherein each attachment element comprises at least three screws 112 a , 112 b , 112 c . All three screws 112 a , 112 b , 112 c are arranged closer to a center of the first frame element 102 than a perimeter of the support portion 101 a , 101 b , i.e. an imaginary extension 114 a , 114 b , 114 c of the longitudinal axis of each screw 112 a , 112 b , 112 c passes outside the support portion 101 a , 101 b when viewed in cross-section, as is illustrated in FIG. 2 a .
  • a first screw 112 a is arranged between a second screw 112 b and a third screw 112 c .
  • FIG. 2 a only illustrates one group of screws. However, a group of screws may be arranged at any location around the frame 109 to attach the first frame element 102 to the panel 1 .
  • FIG. 2 b illustrates an embodiment wherein each group of screws consists of only two screws 113 a , 113 b .
  • a first screw 113 a is arranged opposing the support portion 101 a , 101 b , i.e. an imaginary extension 115 a of the longitudinal axis of the first screw 113 a passes through the support portion 101 b when viewed in cross-section, such as through the center thereof, as is illustrated in FIG. 2 b .
  • a second screw 113 b of the two screws is arranged closer to a center of the first frame element 102 than a perimeter of the support portion 101 b , i.e. an imaginary extension 115 b of the longitudinal axis of the first screw 113 b passes outside the support portion 101 b when viewed in cross-section, as is illustrated in FIG. 2 b.
  • the first screw 112 a is arranged to displace the frame 109 away from panel 1 .
  • This may be enabled by a threaded hole 112 i in the frame 102 which the first screw engages while a head of the screw abuts the panel 1 .
  • the second screw 112 b is arranged to displace the frame 109 towards the panel.
  • This may be enabled by a threaded hole 112 f in the panel 1 , which the second screw 112 b engages while the head of the second screw 112 b abuts the surface of the frame.
  • FIGS. 2 a -2 b only one group of screws is illustrated. However, a group of screws may be arranged at any location around the frame 109 to support the plate 2 and the panel 1 .
  • FIG. 2 c illustrates that a combination the embodiment of FIGS. 2 a and 2 b , i.e. groups of screws with two as well as three screws may be arranged around the frame 109 . Therefore, flexibility is provided for.
  • each group of screws 112 a , 112 b , 112 c , 113 a , 113 b may apply a force to the frame 109 . Therefore, a torque may be applied at the second frame element 103 a , 103 b via controlling the curvature of the frame 109 such that tilt of the support portion 101 a , 101 b , and thereby curvature of the plate, is controlled.
  • a net force is applied such that the frame is substantially flat and parallel with the panel 1 .
  • a net force away from the support portion 101 a , 101 b is provided to the frame 109 , which will be slightly concave when viewed from the touch surface of the plate 2 .
  • a torque will be provided at to the second frame element 103 a , 103 b , which will tilt the support portion 101 a , 101 b along the edge or perimeter of the plate 2 . Therefore, controlling the curvature of the first frame element 109 may control curvature of the plate.
  • the plate 2 may become concave as viewed from the touch surface of the plate 2 .
  • FIGS. 4 a -4 c , 5 a -5 g and 6 a -6 c illustrate embodiments wherein an alternative or additional control of the shape of the frame 109 may be introduced.
  • attachment elements 112 may be arranged at the corners of the frame 109 .
  • the attachment elements 112 may comprise the group of screws 112 a , 112 b , 112 c , 113 a , 113 b as described above with regard to FIGS. 2 a -2 c and 3 a -3 d .
  • the attachment elements 112 may be arranged to pull the panel 1 towards the frame 109 . This may be done with or without tilting the support portion 101 a , 101 b as described above.
  • At least one spacing element 116 may be arranged along the perimeter of the frame 109 between two attachment elements 112 .
  • the spacing element 116 is arranged in the assembly to apply a force to the frame 109 directed away from the panel 1 . Thereby, a force applied by the spacing element 112 may be transferred to the second frame element 103 a , 103 b such that the support 101 a , 101 b is tilted as described above, whereby curvature of the plate 2 is controlled.
  • each side of the frame 109 may be controlled to follow a curved path.
  • the curvature may be controlled by adjusting the force applied by each spacing element 116 and/or via the number of spacing elements 116 along each side of the frame 109 .
  • the support portion 101 a , 101 b at least at the free end of the support portion 101 a , 101 b , may also follow a curved path. Therefore, at least a portion of the support portion 101 a , 101 b may extend in a plane that is curved.
  • the second frame element 103 a , 103 b When the second frame element 103 a , 103 b is disassembled or only attached to the first frame element 102 , it may have a relaxed state. In the relaxed state, the support portion 101 a , 101 b extends in a plane that is substantially flat.
  • the second frame element 103 a , 103 b may be deflectable from the relaxed state to a deflected state or stressed state, such as by the attachment elements 112 and spacing elements 116 .
  • the level of tilt at the opposing ends of the support 101 a , 101 b where the attachment elements 112 are provided may be less than the level of tilt between the ends where spacing element(s) 116 is/are provided.
  • the second frame element 103 a , 103 b may be deflected to the deflected or stressed state.
  • the support portion 101 a , 101 b extends, along its length, in a plane that is curved.
  • a cross section of this plane taken along the support portion 101 a , 101 b such as at the free end or tip of the support portion 101 a , 101 b may form a parabolic concave curve along at least a portion of the length of the support portion 101 a , 101 b .
  • a combination of the attachment element 112 and the spacing element 116 that together may form a screw arrangement, may hold the second frame element 103 a , 103 b in the deflected or stressed state when assembled with the first frame element 102 .
  • the spacing element 116 may be provided by a single screw that engages a thread in the frame 109 while its tip engages or abuts a surface on panel 1 .
  • panel 1 comprises a threaded hole into which spacing element 116 is threaded so that spacing element 116 can be used to displace the frame 109 towards panel 11 .
  • element 116 may comprise a spacer component such as a washer, spacer, etc.
  • FIGS. 3 a and 3 b and FIG. 6 a two spacing elements 116 a , 116 b are shown for illustrative purposes and may form separate embodiments.
  • a single-spacing element 116 a , 116 b may be used in other embodiments.
  • the head of the spacing element 116 a , 116 b may abut the back cover 111 while the spacing element 116 a , 116 b may engage the frame 109 , wherein the frame 109 may be pulled towards the back cover 111 .
  • the frame 109 becomes concave.
  • the spacing element 116 a does not abut or engage the panel 1 , wherein the panel 1 may be unaffected by the force applied to the frame 109 .
  • the spacing element 116 b is sufficiently long such that a tip of the spacing element 116 b abuts a surface of the panel 1 . This adds further control of the shape of the plate 2 .
  • the frame assembly 100 comprises a plurality of spacing elements 116 arranged spaced apart from corners of the frame 109 .
  • One or several spacing elements 116 may be arranged along each perimeter or side of the frame 109 . If a single spacing element 116 is arranged along each side, it is preferably centered between the corners of the frame 109 .
  • Each spacing element 116 may comprise a screw with a predefined length. This means that the screw can be fully seated such that the head and tip abut respective surfaces, whereby a predefined curvature of the plate 2 is obtained.
  • the level of curvature may be adjusted by one or several spacers arranged between the head and the surface which the head engages. This is particularly useful if multiple spacing elements 116 are arranged along a single side, or if different sides have different lengths. The more spacers provided, the less force will be applied to the frame 109 .
  • predefined height differences may be generated via other methods, e.g. by milling the frame to the predefined heights, allowing a more continuous support structure.
  • FIGS. 5 a -5 h illustrate embodiments of an assembly 200 , which may be combined with the first frame element 102 described above.
  • the embodiments shown in FIGS. 5 a -5 h are shown inverted relative to the embodiments shown previously, with the plate 2 at the top.
  • the frame assembly 200 may comprise a first frame element 202 , and a second frame element 203 .
  • the first frame element 202 and the second frame element 203 may be elongated members, each having a support portion 201 a , 201 b .
  • the first frame element 202 and the second frame element 203 may e.g. be L-shaped in cross section.
  • a first portion of each of the first frame element 202 and the second frame element 203 may be configured to extend along the edge of the panel 1 .
  • a second portion of each of the first frame element 202 and the second element 203 forms the support portion 201 a , 201 b , and may be configured to extend from the perimeter of the plate 2 a short distance, such as a 1-3 cm, over the surface of the plate 2 when assembled. Furthermore, the second frame element 203 may be arranged on top of the first frame element 202 and such that the perimeter of the plate 2 is arranged between the second portion of each of the frame elements 202 , 203 when assembled. Therefore, each support portion 201 a , 201 b may support or engage opposing surfaces of the plate 2 , such as is illustrated in FIG. 5 g.
  • a gasket 205 (e.g. gaskets 205 a , 205 b , 205 c , 205 d , 205 e ) is arranged between the first frame element 202 and the second frame element 203 .
  • the gasket may e.g. be arranged on the support portion 201 a of the first frame element 202 .
  • a sealing 204 a may be arranged on the support portion 20 b of the second frame element 203 .
  • the gasket 205 may have a varying thickness along its length, i.e. also along the length of the first frame element 202 . This provides for obtaining a desired curved shape of the perimeter of the plate 2 when captured between the first frame element 202 and the second frame element 203 , as is illustrated in FIGS. 5 f -5 g .
  • the gasket 205 has opposing ends and may be thinner between the opposing ends than at said ends. This provides for obtaining a predefined concavity of the perimeter of the plate 2 .
  • the gasket is sufficiently stiff that it is thicker at the ends even when compressed.
  • the gasket 205 may be about 1.5-2.0 mm at the ends and about 1 mm thinner at the center.
  • the gasket 205 has a plurality of sections along its length.
  • the thickness of each section may vary.
  • a first section 205 a of the gasket is provided at one of its ends and a second section 205 b of the gasket at the other of its ends.
  • the first section 205 a and the second section 205 b may have a first thickness that may be equal at each section.
  • At least a third section 205 c of the gasket is arranged between the first section 205 a and the second section 205 b .
  • the third section 205 c has a second thickness.
  • the first thickness is thicker than the second thickness. For example, difference in thickness is about 0.5-2 mm, preferably about 1.0 mm.
  • the difference in thickness may vary depending on the length of the gasket 205 and the edge of the plate 2 at which the concavity is to be introduced.
  • fourth and fifth sections 205 d , 205 e may be provided between the first and second sections 205 a , 205 b and the third section 205 c , respectively.
  • the fourth and fifth sections 205 d , 205 e may add further control of the shape of the concave curve provided by the arrangement 200 .
  • the length of each the first and second sections 205 a , 20 b may be about 2-20% of the total length of the gasket 205 .
  • the length of the third section may be about 60-96% of the total length of the gasket 205 .
  • each of the fourth and fifth sections 205 d , 205 e may be about 10-20% of the total length of the gasket 205 .
  • the total length of the fourth and fifth sections 205 d , 205 e is shorter than the length of the third section 205 c
  • the total length of the first and second sections 205 a , 205 a is shorter than total length of the fourth and fifth sections 205 d , 205 e . This provides for a parabolic concave curve along the length of the frame assembly 200 .
  • a distance between the support portion 201 a of the first frame element 202 and the support portion 201 b of the second frame element 203 may be discontinuous in an assembled state, as can be seen in FIG. 5 e.
  • the first frame element 202 and the second frame element 203 may be held together such that the distance between the support portions 201 a , 201 b is maintained in the assembled state.
  • the first frame element 202 has a first hole 217 a and a second hole 217 b arranged at opposing ends of the first frame element 202 , such as at the second portion of the first frame element 202 .
  • the first and the second hole 217 a , 217 b are arranged in a first plane.
  • a third hole 217 c is arranged between the first hole 217 a and the second hole, such as centered between the first hole 217 a and the second hole 217 b .
  • the third hole 217 c is provided in a plane that is different from the first plane.
  • the distance or offset between the plane in which the first and second holes 217 a , 217 b are arranged and the plane in which the third hole 217 c is arranged may be substantially the same as the difference in thickness between the first and second sections 205 a , 205 b and the third section 205 c , i.e. about 0.5-2 mm.
  • the first and second holes 217 a , 217 b are centered in each of the first and second sections 205 a , 205 b of the gasket 205 along the length of the first frame element 202 .
  • the second frame element 203 may comprise a first hole 218 a and a second hole 218 b arranged at opposing ends of the second frame element 203 .
  • a third hole 218 c may be arranged between the first hole 218 a and the second hole 218 b of the second frame element 203 .
  • the first hole 218 a , the second hole 218 b , and the third hole 218 c of the second frame element 203 is generally arranged in the same plane when the second frame element 203 is disconnected from the first frame element 202 .
  • the second frame element 203 may be less stiff or weaker than the first frame element 202 and be deflectable such that each hole 218 a , 218 b , 218 c of the second frame element 203 is aligned with the holes 217 a , 217 b , 217 c of first frame element 202 . Therefore, the support portion 201 b of the second frame element 203 may be deflected such that it extends in plane, which is curved in the assembled state of the frame assembly 200 .
  • Screws 219 a , 219 b , 219 c may be inserted through the aligned holes 217 a , 217 b , 217 c ; 218 a , 218 b , 218 c and may directly engage the panel or engage a threaded hole in the panel 1 , which will hold the frame elements 202 , 203 in the assembled state.
  • the first frame element 202 forms a frame side
  • the second frame element 203 forms an edge cover. If used together with the frame 109 discussed with regard to FIGS. 4 a -4 c , the frame side may replace the second frame element of the embodiments of FIGS. 4 a -4 c . Therefore, the frame side comprises the support portion 201 a with a support surface generally opposing the frame 109 and is configured to support the gasket 205 .
  • a component e.g. a sealing component 204 a
  • FIG. 6 illustrates the resulting forces and torque generated when a force 220 is applied to second frame element 203 a .
  • a second force 221 is applied to support portion 201 . Therefore, a net torque 222 is generated, i.e. counter-clockwise in the illustrated arrangement.
  • the plate 2 will assume a curved path, as is illustrated with dotted line 223 .
  • support block 301 is arranged to support glass plate 2 .
  • Support block 301 has a surface portion comprising a tapered edge 303 at an angle from second frame element 103 A.
  • Plate 2 is pressed against the top surface of support block 301 from pressure 201 b from first frame element 102 and sealing 204 a .
  • Pressure 201 b causes plate 2 to follow the contour of the top surface of block 301 and plate 2 is forced into a curving plane at an angle to the plane of second frame element 103 A.
  • the resulting path of plate 2 is shown by curvature path 310 .
  • Tapered surface portion 303 is angled between 0.5 degrees and 3 degrees from second frame element 103 A.
  • FIG. 8 a variation of the embodiment shown in FIGS. 5 a -5 g is provided.
  • second frame element 203 has been modified, such that a portion 410 has been removed from the edge portion 203 c of second frame element 203 .
  • Portion 410 may be removed by a milling process, by a carving or cutting process, or second frame element 203 may be formed without portion 410 via a molding process or similar.
  • Portion 410 preferably reduces the depth of second frame element 203 at the narrowest point by between 5-20%.
  • the frame elements of the embodiments of the assembly may be made from sheet metal and given a desired design, thickness, and/or be made from different materials such that the forces, shapes, torques, etc. discussed above are obtained.
  • Embodiments comprise a method for assembling the panel 1 and the plate 2 for the optical touch sensitive system.
  • the method may comprise providing the frame elements according to the embodiments presented herein.
  • the method further comprises attaching the first frame element to the second frame element, supporting the plate at a support portion of the assembly, and attaching at least one of the first frame assembly and the second frame assembly to the panel such that the support portion extends in flat or curved plane.
  • the method comprises attaching the second frame element to the first frame element such that the support portion extends at least partially in a second plane generally opposite at least a portion of the first frame element and is spaced apart from the first plane.
  • a curvature of the first frame element may be controlled with a spacing element attached to the first frame element and may thereby tilt the support portion to control a curvature of the plate.
  • FIG. 9 illustrates a top plan view of an example of a touch-sensitive apparatus 99 .
  • Emitters 30 a are distributed around the periphery of touch plate 10 , to propagating light across touch surface 20 .
  • Detectors 30 b are distributed around the periphery of touch surface 20 , to receive part of the propagating light. The light from each of emitters 30 a will propagate to a number of different detectors 30 b on a plurality of light paths 50 .
  • Light paths 50 may conceptually be represented as “detection lines” that extend across the touch surface 20 between pairs of emitters 30 a and detectors 30 b .
  • the emitters 30 a and detectors 30 b collectively define a grid of detection lines 50 (“detection grid”) on the touch surface 20 , as seen in a top plan view.
  • the spacing of intersections in the detection grid define the spatial resolution of the touch-sensitive apparatus 99 , i.e. the smallest object that can be detected on the touch surface 20 .
  • the width of the detection line is a function of the width of the emitters and corresponding detectors.
  • a wide detector detecting light from a wide emitter provides a wide detection line with a broader surface coverage, minimizing the space in between detection lines which provide no touch coverage.
  • a disadvantage of broad detection lines may be a reduced ability to differentiate between separate objects and a lower signal to noise ratio.
  • the emitters 30 a may be any type of device capable of emitting radiation in a desired wavelength range, for example a diode laser, a VCSEL (vertical-cavity surface-emitting laser), an LED (light-emitting diode), an incandescent lamp, a halogen lamp, etc.
  • the emitters 30 a may also be formed by the end of an optical fiber.
  • the emitters 30 a may generate light in any wavelength range. The following examples presume that the light is generated in the infrared (IR), i.e. at wavelengths above about 750 nm.
  • the detectors 30 b may be any device capable of converting light (in the same wavelength range) into an electrical signal, such as a photo-detector, a CCD device, a CMOS device, etc.
  • the detectors 30 b collectively provide an output signal, which is received and sampled by a signal processor 130 .
  • the output signal contains a number of sub-signals, also denoted “projection signals”, each representing the energy of light received by one of light detectors 30 b from one of light emitters 30 a .
  • the signal processor 130 may need to process the output signal for separation of the individual projection signals.
  • the projection signals represent the received energy, intensity or power of light received by the detectors 30 b on the individual detection lines 50 . Whenever an object partially or completely occludes detection line 50 , the received energy on this detection line is decreased or “attenuated”.
  • the signal processor 130 may be configured to process the projection signals so as to determine a property of the touching objects, such as a position (e.g. in a x, y coordinate system), a shape, or an area. This determination may involve a straight-forward triangulation based on the attenuated detection lines, e.g. as disclosed in U.S. Pat. No. 7,432,893 and WO2010/015408, or a more advanced processing to recreate a distribution of attenuation values (for simplicity, referred to as an “attenuation pattern”) across the touch surface 20 , where each attenuation value represents a local degree of light attenuation.
  • a property of the touching objects such as a position (e.g. in a x, y coordinate system), a shape, or an area. This determination may involve a straight-forward triangulation based on the attenuated detection lines, e.g. as disclosed in U.S. Pat. No. 7,432,893 and WO2010/015408,
  • the attenuation pattern may be further processed by the signal processor 130 or by a separate device (not shown) for determination of a position, shape or area of touching objects.
  • the attenuation pattern may be generated e.g. by any available algorithm for image reconstruction based on projection signal values, including tomographic reconstruction methods such as Filtered Back Projection, FFT-based algorithms, ART (Algebraic Reconstruction Technique), SART (Simultaneous Algebraic Reconstruction Technique), etc.
  • the attenuation pattern may be generated by adapting one or more basis functions and/or by statistical methods such as Bayesian inversion.
  • the apparatus 99 also includes a controller 120 which is connected to selectively control the activation of the emitters 30 a and, possibly, the readout of data from the detectors 30 b .
  • the emitters 30 a and/or detectors 30 b may be activated in sequence or concurrently, e.g. as disclosed in U.S. Pat. No. 8,581,884.
  • the signal processor 130 and the controller 120 may be configured as separate units, or they may be incorporated in a single unit.
  • One or both of the signal processor 130 and the controller 120 may be at least partially implemented by software executed by a processing unit 140 .
  • FIG. 10 a illustrates a substantially flat rectangular touch plate 10 according to the prior art.
  • the touch plate is made of glass, plastic, or any other materials such as PMMA (Poly(methyl methacrylate)).
  • Two axes are defined in FIG. 10 a .
  • the x-axis is defined as the axis running parallel to and equidistant from the pair of long edges of the rectangle and along the flat surface of the touch surface.
  • the y-axis is defined as the axis running parallel to and equidistant from the pair of short edges of the rectangle and along the flat surface of the touch surface.
  • At least a portion of the top surface of touch plate 10 comprises touch surface 20 .
  • FIG. 10 b illustrates an example of a touch apparatus according to the prior art.
  • FIG. 10 b shows the touch apparatus in cross section wherein the cross section runs along the x-axis of the plate 10 .
  • Light is emitted by emitter 30 a , passes through transmissive plate 10 through touch surface 20 and is reflected by reflector surface 80 of edge reflector 70 to travel in a plane substantially parallel with touch surface 20 . The light will then continue until deflected by reflector surface 80 of the edge reflector 70 at an opposing edge of the transmissive plate 10 , wherein the light will be deflected back down through transmissive plate 10 and onto detectors 30 b . Where an object is applied to touch surface 20 , some of the light above the touch surface 20 is occluded.
  • the emitters and detectors may be arranged in a number of other configurations such that the light from the emitters is delivered to the touch surface and delivered from the touch surface to the detectors. Other known arrangements are that of arranging the emitters and detectors above the touch surface and transmitting and receiving the light directly without the use of reflecting surfaces.
  • the light may also be delivered to the touch surface by means of a wave guide, fiber optic cable, or other optical component.
  • FIG. 11 a illustrates an embodiment of touch plate 10 similar to that shown in FIG. 10 a but wherein the touch plate 10 is curved.
  • the plate remains substantially flat in the direction of the y-axis but is curved in a concave direction relative to the x-axis.
  • the x-axis is defined as the axis running parallel to and equidistant from the pair of long edges of the rectangle.
  • the vertex of the parabola or paraboloid of the touch surface is where the touch surface is deepest relative to the edges of the touch plate.
  • the curvature of the plate can be measured using the distance of the touch surface from the x-axis.
  • FIG. 11 b shows a cross-section view along the x-axis of the touch plate 10 of FIG. 11 a.
  • FIG. 11 c shows an example embodiment of a curved touch plate 10 .
  • the touch plate 10 has a width of 1900 mm along the x-axis and a height of 1070 mm along the y-axis.
  • the glass is shaped such that the touch surface follows a parabolic curve relative to the x-axis.
  • the midpoint O of touch surface 20 is the center of the touch surface and the midpoint of the x-axis. Where the curvature of the touch surface 20 is parabolic, the maximum distance a between the touch surface and the x-axis is at the center point O of the touch surface.
  • FIG. 11 d shows the maximum allowed concave distance a and maximum allowed convexity b.
  • the maximum allowed convexity b may be a significant consideration as a portion of the touch surface that is substantially convex may result in occlusion of the light between the emitters and detectors and significant loss of touch signal.
  • the maximum allowed convexity b is a negative number in the present examples.
  • the range of the distance a for vertically orientated touch plate is limited in order to improve the yield and performance of touch systems.
  • the range is set dependent on the size of the touch system. A smallest value is needed to assure that non-parabolic deviations in the glass shape and convexity in the integration doesn't result in a convex integrated touch surface. A largest value is needed in order to assure that the height of the light field for the final touch system is kept reasonably low in order to enable better contact detection and lift-off detection for touch objects.
  • range of the distance a is 0-2.5 mm.
  • the maximum distance a is a positive number for a concave glass in the present examples.
  • the curvature of the touch surface may therefore be modelled as:
  • an ideal parabolic curve for touch surface 20 may be:
  • F(x) is the distance between the x-axis and the touch surface at position x wherein F (x) is zero at the mid points of the edges. i.e. where the x-axis intersects the perimeter.
  • FIGS. 12 a and 12 b illustrates an embodiment of touch plate 10 similar to that shown in FIG. 11 a but wherein the touch plate 10 is curved in two axes.
  • FIG. 12 a shows a top plan view
  • FIG. 12 b shows an isometric view of touch plate 10 .
  • the plate is curved in a concave direction relative to the x-axis and is also curved in a concave direction relative to the y-axis.
  • the x-axis is defined as the axis running parallel to and equidistant from the pair of long edges of the rectangle and passing over the center point 0 on the touch surface.
  • the curvature of the plate can be measured from the distance of the touch surface from the x-axis.
  • the y-axis is defined as the axis running parallel to and equidistant from the pair of short edges of the rectangle and passing over the center point 0 on the touch surface. Therefore, the curvature of the plate along this axis can be measured from the distance of the touch surface from the y-axis.
  • FIGS. 12 c and 12 d shows respective section views along the x-axis and y-axis of the touch plate 10 of FIGS. 12 a and 12 b .
  • a curved touch plate 10 The touch plate 10 has a width of 1900 mm along the x-axis and a height of 1070 mm along the y-axis.
  • the glass is shaped such that the touch surface follows a parabolic curve relative to the x-axis.
  • the center point O of touch surface 10 is the center of the touch surface and parallel with midpoint of the x-axis.
  • the maximum distance a between the touch surface and the x-axis is at the center point O.
  • the maximum distance a is a positive number for a concave glass in the present examples.
  • the curvature of the touch surface may therefore be modelled as:
  • FIG. 13 a shows a section view along the x-axis of light propagating across an example embodiment of a curved touch plate 10 touch surface having a curved profile in the x-axis.
  • the propagation paths of light from a point light source 1310 are shown.
  • Dotted lines 1320 show propagation paths of light emitted from point light source 1310 a that are not received by detector surface 1340 .
  • Solid lines 1330 show propagation paths of light emitted form point light source 1310 that are received by detector surface 1340 . As shown in the figure, a portion of the light is lost above the detector, a portion is lost below the detector, and a portion of the light is received at the detector surface.
  • the detectors and emitters of the touch system are 3 mm or less above the touch surface (either directly or indirectly) and the length of the detection lines being in the range from 100 to 2500 mm, the angle of incidence is extremely close to 90 degrees. With this, gracing incidence, dirt or anti-glare coatings on the touch surface have no practical impact of the reflection, so it is practically a mirror.
  • FIG. 13 b provides a graph of the angle of the emitted light from the point light source 1310 with respect to the z-coordinate of the light path at the edge of the model of FIG. 13 a .
  • the detector surface z-coordinate range is shown by the vertical axis. Light emitted by point light source 1310 received at a z-coordinate within that range is received by the detector.
  • FIG. 14 a shows a section view of the embodiment of FIG. 13 a .
  • the propagation paths of light from a second point light source 1410 are shown.
  • the detection signal boost is approximately 3.3.
  • FIG. 14 b shows the corresponding graph of FIG. 13 b for the second point light source 1410 .
  • FIG. 15 a shows a section view of the embodiment of FIG. 13 a .
  • the propagation paths of light from a third point light source 1510 are shown.
  • FIG. 15 b shows the corresponding graph of FIG. 13 b for the third point light source 1510 .
  • the detection signal boost is approximately 3.03.
  • FIG. 16 a shows a section view of the embodiment of FIG. 13 a .
  • the propagation paths of light from a fourth point light source 1610 are shown.
  • FIG. 16 b shows the corresponding graph of FIG. 13 b for the fourth point light source 1610 .
  • the detection signal boost is approximately 2.71.
  • FIG. 17 a shows a section view of the embodiment of FIG. 13 a .
  • the propagation paths of light from a fifth point light source 1710 are shown.
  • FIG. 17 b shows the corresponding graph of FIG. 13 b for the fifth point light source 1710 .
  • the detection signal boost is approximately 2.19.
  • FIGS. 13 a -17 b demonstrate that different emitter positions utilize different parts of the touch surface.
  • the parts of the touch surface that work as reflectors will depend on the actual shape of the glass and the placement and sizes of the emitter and detector apertures surface 1340 .
  • the touch plate 10 cannot be manufactured, positioned, or held in shape perfectly. Consequently, a certain amount of deviation can be expected between the curve followed by the touch surface and an ideal parabolic curve.
  • FIG. 18 a shows a graph of a mathematically defined parabolic curve and a real-world parabolic touch surface.
  • a curved touch plate 10 has a width of 1900 mm along the x-axis and a height of 1070 mm along the y-axis (wherein the x-axis and y-axis are defined as in the embodiment shown in FIG. 12 a ,4 b ).
  • the glass is shaped such that the touch surface follows parabolic curve 1810 relative to the x-axis.
  • the maximum distance a between the touch surface and the x-axis is 10 mm.
  • the mathematically defined parabolic curve is defined as 1820 .
  • the graph shows the deviation between the mathematically defined parabolic curve represented by dotted line 1820 and real touch surface 1810 .
  • the real touch surface is asymmetrically warped.
  • FIG. 10 b shows the short to short mid cross section of a 2180 mm diagonal, 16:9 ratio, thermally tempered glass that is just within or at the maximum limit of concave distance ⁇ 6 mm as well as
  • the parabolic fit of the touch surface 1810 has an s-shaped residual.
  • Such asymmetrical warping may be the result of problems with transport rollers or an uneven temperature distribution during the rapid cooling phase of tempering process during manufacture.
  • FIG. 18 b shows a graph of the deviation between the mathematically defined parabolic curve and a real-world parabolic touch surface of FIG. 18 a.
  • the following table defines a preferred set of restrictions on the shape of the touch surface in order to achieve an optimal touch surface shape.
  • warp defines the distance of the touch surface from the respective axis intersecting the center point O in the direction of the z-axis.
  • Convexity b is shown in FIG. 18 a .
  • Parabolic deviation is shown in FIG. 18 b.
  • FIG. 19 a shows another graph of a mathematically defined parabolic curve and a similar glass to that of FIG. 18 a but wherein the glass of FIG. 19 a is out of range and not recommended for touch system production.
  • One reason for the large concavity shown in FIG. 19 a may be that the tempering process has been run with too large differences between bottom and top cooling parameters in a quenching process during manufacturing.
  • the mathematically defined parabolic curve is defined as 1920 .
  • the graph shows the deviation between the mathematically defined parabolic curve and real touch surface 1910 .
  • FIG. 19 b shows a graph of the deviation between the mathematically defined parabolic curve and a real-world parabolic touch surface of FIG. 19 a .
  • the real-world parabolic touch surface of FIG. 19 a is an example of a symmetrical but higher order warping (e.g. W shaped). Such warping may significantly reduce signal boost and may be caused by symmetrical temperature problems (e.g. too hot in center or edge of glass) during the manufacturing tempering process.
  • FIG. 20 a shows an embodiment in which the touch surface forms a paraboloid.
  • a top plan view of the touch surface is shown with contour lines showing the depth of the touch surface relative to a flat plane intersecting the four corners of the touch surface.
  • the numbers shown on each contour represents the depth of the contour.
  • the x-axis, y-axis, and diagonal-axis d are all shown.
  • the x-axis is defined as an axis running parallel to and equidistant from the pair of long edges of the rectangle.
  • the y-axis is defined as an axis running parallel to and equidistant from the pair of short edges of the rectangle.
  • Diagonal-axis d is defined as an axis running diagonally from one corner to a diagonally opposite corner.
  • the x-axis, y-axis, and diagonal axis d of touch surface 10 each describe a parabola with respect to the depth of the touch surface.
  • diagonal-axis d is shown running from the bottom left corner to the top right corner.
  • the curved touch plate 10 has a width of 1900 mm along the x-axis and a height of 1070 mm along the y-axis.
  • FIGS. 20 b -20 d show optional parabola configurations for the embodiment shown in FIG. 20 a .
  • FIG. 20 b shows a graph of the desired parabola of the touch surface underneath the x-axis and relative to the x-axis. The deviation (bottom axis) from the x-axis is shown relative to the position (left axis) along the x-axis.
  • FIG. 20 c shows a graph of the desired parabola of the touch surface underneath the y-axis and relative to the y-axis. The deviation (bottom axis) from the x-axis is shown relative to the position (left axis) along the y-axis.
  • FIG. 20 b shows a graph of the desired parabola of the touch surface underneath the x-axis and relative to the x-axis. The deviation (bottom axis) from the x-axis is shown relative to the position (left axis) along the y-axis.
  • 20 d shows a graph of the desired parabola of the touch surface underneath the diagonal-axis and relative to the diagonal-axis.
  • the deviation (bottom axis) from the x-axis is shown relative to the position (left axis) along the diagonal-axis.
  • FIG. 20 a -20 d describe a touch surface providing substantial signal boost for signals travelling between most emitters and detectors.
  • the non-flat perimeter of the touch surface makes manufacture and assembly of such a system more complex.
  • FIG. 21 a shows an embodiment in which the touch surface forms an alternative paraboloid to that of the embodiment shown in FIG. 20 a .
  • FIG. 21 a provides a top plan view of the touch surface is shown with contour lines showing the depth of the touch surface relative to a flat plane intersecting the four edges of the touch surface 10 .
  • the numbers shown on each contour represents the depth of the contour.
  • X-axis, y-axis, and diagonal-axis d are all shown.
  • the x-axis is defined as an axis running parallel to and equidistant from the pair of long edges of the rectangle.
  • the x-axis of touch surface 10 describes a parabola with respect to the depth of the touch surface.
  • the y-axis is defined as an axis running parallel to and equidistant from the pair of short edges of the rectangle.
  • the y-axis of touch surface 10 also describes a parabola with respect to the depth of the touch surface.
  • Diagonal-axis d is defined as an axis running diagonally from one corner to a diagonally opposite corner.
  • diagonal-axis d is shown running from the bottom left corner to the top right corner.
  • the curved touch plate 10 has a width of 1900 mm along the x-axis and a height of 1070 mm along the y-axis.
  • the perimeter of the touch surface of this embodiment is flat or close to flat.
  • the surface beneath some detection lines will not be perfect parabolas. Even for an almost perfect integrated glass shape with a warp in the range of 1-2.5 mm some detection lines (a very small portion) will actually have less signal than for a flat glass. This small drawback is counter balanced by the significant overall signal improvements. Furthermore, touch systems where the perimeter of the touch surface is flat or close to flat can be easier to manufacture and assemble.
  • FIG. 21 b shows a graph of the desired parabola of the touch surface underneath the x-axis and relative to the x-axis.
  • the deviation (bottom axis) from the x-axis is shown relative to the position (left axis) along the x-axis.
  • FIG. 21 c shows a graph of the desired parabola of the touch surface underneath the y-axis and relative to the y-axis.
  • the deviation (bottom axis) from the x-axis is shown relative to the position (left axis) along the y-axis.
  • FIG. 21 d shows a graph of the desired parabola of the touch surface underneath the diagonal-axis and relative to the diagonal-axis.
  • the deviation (bottom axis) from the x-axis is shown relative to the position (left axis) along the diagonal-axis.
US16/191,050 2016-12-07 2018-11-14 Touch device Abandoned US20190079638A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE1630294-5 2016-12-07
SE1630294 2016-12-07
PCT/SE2017/051233 WO2018106176A1 (en) 2016-12-07 2017-12-07 An improved touch device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2017/051233 Continuation WO2018106176A1 (en) 2016-12-07 2017-12-07 An improved touch device

Publications (1)

Publication Number Publication Date
US20190079638A1 true US20190079638A1 (en) 2019-03-14

Family

ID=62492002

Family Applications (8)

Application Number Title Priority Date Filing Date
US16/191,050 Abandoned US20190079638A1 (en) 2016-12-07 2018-11-14 Touch device
US16/190,907 Active US10282035B2 (en) 2016-12-07 2018-11-14 Touch device
US16/403,283 Active US11281335B2 (en) 2016-12-07 2019-05-03 Touch device
US16/706,438 Active US10775935B2 (en) 2016-12-07 2019-12-06 Touch device
US17/020,489 Active US11579731B2 (en) 2016-12-07 2020-09-14 Touch device
US17/671,648 Active US11868568B2 (en) 2016-12-07 2022-02-15 Touch device
US18/103,118 Active US11914819B2 (en) 2016-12-07 2023-01-30 Touch device
US18/342,674 Active US11907480B2 (en) 2016-12-07 2023-06-27 Touch device

Family Applications After (7)

Application Number Title Priority Date Filing Date
US16/190,907 Active US10282035B2 (en) 2016-12-07 2018-11-14 Touch device
US16/403,283 Active US11281335B2 (en) 2016-12-07 2019-05-03 Touch device
US16/706,438 Active US10775935B2 (en) 2016-12-07 2019-12-06 Touch device
US17/020,489 Active US11579731B2 (en) 2016-12-07 2020-09-14 Touch device
US17/671,648 Active US11868568B2 (en) 2016-12-07 2022-02-15 Touch device
US18/103,118 Active US11914819B2 (en) 2016-12-07 2023-01-30 Touch device
US18/342,674 Active US11907480B2 (en) 2016-12-07 2023-06-27 Touch device

Country Status (12)

Country Link
US (8) US20190079638A1 (lt)
EP (3) EP4152132A1 (lt)
JP (3) JP2020512607A (lt)
KR (4) KR102344055B1 (lt)
CN (3) CN116755580A (lt)
DK (1) DK3667475T3 (lt)
ES (1) ES2928650T3 (lt)
HU (1) HUE059960T2 (lt)
LT (1) LT3667475T (lt)
PL (1) PL3667475T3 (lt)
PT (1) PT3667475T (lt)
WO (1) WO2018106176A1 (lt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020236071A1 (en) * 2019-05-22 2020-11-26 Flatfrog Laboratories Ab Touch sensing apparatus
US11914819B2 (en) * 2016-12-07 2024-02-27 Flatfrog Laboratories Touch device

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016122385A1 (en) 2015-01-28 2016-08-04 Flatfrog Laboratories Ab Dynamic touch quarantine frames
EP3256936A4 (en) 2015-02-09 2018-10-17 FlatFrog Laboratories AB Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel
WO2017099657A1 (en) 2015-12-09 2017-06-15 Flatfrog Laboratories Ab Improved stylus identification
US10963104B2 (en) 2017-02-06 2021-03-30 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
WO2018174786A1 (en) 2017-03-22 2018-09-27 Flatfrog Laboratories Pen differentiation for touch displays
EP3602259A4 (en) 2017-03-28 2021-01-20 FlatFrog Laboratories AB TOUCH DETECTION DEVICE AND ITS ASSEMBLY PROCESS
US10712892B2 (en) * 2017-04-26 2020-07-14 Sensel, Inc. Pre-loading a resistive touch sensor device via lamination of differently curved surfaces
CN111052058B (zh) 2017-09-01 2023-10-20 平蛙实验室股份公司 改进的光学部件
US11567610B2 (en) 2018-03-05 2023-01-31 Flatfrog Laboratories Ab Detection line broadening
CN112889016A (zh) * 2018-10-20 2021-06-01 平蛙实验室股份公司 用于触摸敏感装置的框架及其工具
WO2020153890A1 (en) 2019-01-25 2020-07-30 Flatfrog Laboratories Ab A videoconferencing terminal and method of operating the same
WO2020159411A1 (en) * 2019-01-31 2020-08-06 Flatfrog Laboratories Ab A jig for assembling a touch sensing device
JP2023512682A (ja) 2020-02-10 2023-03-28 フラットフロッグ ラボラトリーズ アーベー 改良型タッチ検知装置
US11709568B2 (en) 2020-02-25 2023-07-25 Promethean Limited Convex interactive touch displays and related systems and methods
JP7203784B2 (ja) 2020-03-27 2023-01-13 株式会社ソニー・インタラクティブエンタテインメント 電子機器及びその外装パネル
US20230114888A1 (en) * 2020-03-27 2023-04-13 Sony Interactive Entertainment Inc. Electronic apparatus and exterior panel thereof
US11408788B2 (en) * 2020-03-31 2022-08-09 Toyota Research Institute, Inc. Variable geometry and stiffness control for fluid filled sensor
CN112631453B (zh) * 2020-09-16 2024-01-26 安徽鸿程光电有限公司 一种触控装置
TWI742894B (zh) * 2020-10-27 2021-10-11 明基電通股份有限公司 觸控操作方法及其觸控操作系統
WO2022141520A1 (zh) * 2020-12-31 2022-07-07 广州视源电子科技股份有限公司 触摸框组件以及智能交互平板
CN115836275A (zh) * 2020-12-31 2023-03-21 广州视源电子科技股份有限公司 触摸框组件以及智能交互平板

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6031524A (en) * 1995-06-07 2000-02-29 Intermec Ip Corp. Hand-held portable data terminal having removably interchangeable, washable, user-replaceable components with liquid-impervious seal
US20100103133A1 (en) * 2008-10-24 2010-04-29 Samsung Electronics Co., Ltd. Input device for foldable display device and input method thereof
US20120062492A1 (en) * 2009-04-17 2012-03-15 Sharp Kabushiki Kaisha Display device
US20150373864A1 (en) * 2014-06-19 2015-12-24 Samsung Display Co., Ltd. Display apparatus and method of manufacturing same
US20160026297A1 (en) * 2013-03-18 2016-01-28 Sony Corporation Sensor device, input device, and electronic apparatus
US20160209886A1 (en) * 2013-08-30 2016-07-21 Samsung Electronics Co., Ltd. Electronic device having curved bottom and operation method thereof
US20160255713A1 (en) * 2015-02-26 2016-09-01 Samsung Display Co., Ltd. Flexible display and manufacturing method thereof
US20160295711A1 (en) * 2014-01-24 2016-10-06 Lg Electronics Inc. Display device
US10282035B2 (en) * 2016-12-07 2019-05-07 Flatfrog Laboratories Ab Touch device

Family Cites Families (750)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1452041A (fr) 1965-04-26 1966-02-25 Electronique & Automatisme Sa Dispositif de communication avec une calculatrice électronique
US3440426A (en) 1966-01-11 1969-04-22 Us Navy Solar attitude encoder
US3673327A (en) 1970-11-02 1972-06-27 Atomic Energy Commission Touch actuable data input panel assembly
IT961146B (it) 1971-03-12 1973-12-10 Schlumberger Compteurs Apparecchio permettente di determi nare la direzione di una radiazio ne luminosa
FR2172828B1 (lt) 1972-02-23 1974-12-13 Dassault Electronique
DE2654464A1 (de) 1976-12-01 1978-06-08 Sick Optik Elektronik Erwin Photoelektrische lichtempfangsanordnung
US4129384A (en) 1977-06-08 1978-12-12 Batelle Memorial Institute Optical extensometer
US4254333A (en) 1978-05-31 1981-03-03 Bergstroem Arne Optoelectronic circuit element
US4209255A (en) 1979-03-30 1980-06-24 United Technologies Corporation Single source aiming point locator
US4213707A (en) 1979-04-25 1980-07-22 Eastman Kodak Company Device for improving the accuracy of optical measuring apparatus and the like
US4254407A (en) 1979-07-18 1981-03-03 Ncr Corporation Data processing system having optically linked subsystems, including an optical keyboard
US4294543A (en) 1979-11-13 1981-10-13 Command Control & Communications Corporation Optical system for developing point coordinate information
US4484179A (en) 1980-04-16 1984-11-20 At&T Bell Laboratories Touch position sensitive surface
US4346376A (en) 1980-04-16 1982-08-24 Bell Telephone Laboratories, Incorporated Touch position sensitive surface
US4420261A (en) 1980-09-02 1983-12-13 Lowbar, Inc. Optical position location apparatus
JPS58111705A (ja) 1981-12-25 1983-07-02 Mitsutoyo Mfg Co Ltd 光学式測定装置
US4459476A (en) 1982-01-19 1984-07-10 Zenith Radio Corporation Co-ordinate detection system
US4542375A (en) 1982-02-11 1985-09-17 At&T Bell Laboratories Deformable touch sensitive surface
GB2131544B (en) 1982-12-07 1986-03-05 Lowbar Inc Optical postition location apparatus
US4593191A (en) 1982-12-29 1986-06-03 At&T Bell Laboratories Pressure and optical sensitive device with deformable protrusions
GB8302997D0 (en) 1983-02-03 1983-03-09 Bergstrom A Electromagnetic radiation circuit element
US4507557A (en) 1983-04-01 1985-03-26 Siemens Corporate Research & Support, Inc. Non-contact X,Y digitizer using two dynamic ram imagers
US4550250A (en) 1983-11-14 1985-10-29 Hei, Inc. Cordless digital graphics input device
US4752655A (en) 1984-11-16 1988-06-21 Nippon Telegraph & Telephone Corporation Coordinate input device
US4692809A (en) 1984-11-20 1987-09-08 Hughes Aircraft Company Integrated touch paint system for displays
US4673918A (en) 1984-11-29 1987-06-16 Zenith Electronics Corporation Light guide having focusing element and internal reflector on same face
JPH0325219Y2 (lt) 1985-02-15 1991-05-31
JPH0325220Y2 (lt) 1985-02-15 1991-05-31
US4710760A (en) 1985-03-07 1987-12-01 American Telephone And Telegraph Company, At&T Information Systems Inc. Photoelastic touch-sensitive screen
JPS61152133U (lt) 1985-03-12 1986-09-20
US4688993A (en) 1985-03-21 1987-08-25 United Technologies Corporation Tangential link swashplate centering member
DE3511330A1 (de) 1985-03-28 1986-10-02 Siemens Ag Anordnung zum eingeben von grafischen mustern
US4949079A (en) 1985-04-19 1990-08-14 Hugh Loebner Brightpen/pad graphic device for computer inputs and the like
US5073770A (en) 1985-04-19 1991-12-17 Lowbner Hugh G Brightpen/pad II
US5159322A (en) 1985-04-19 1992-10-27 Loebner Hugh G Apparatus to digitize graphic and scenic information and to determine the position of a stylus for input into a computer or the like
US4688933A (en) 1985-05-10 1987-08-25 The Laitram Corporation Electro-optical position determining system
US4736191A (en) 1985-08-02 1988-04-05 Karl E. Matzke Touch activated control method and apparatus
JPH0318997Y2 (lt) 1985-10-04 1991-04-22
JPS62159213A (ja) 1986-01-07 1987-07-15 Alps Electric Co Ltd 座標入力装置
JPH0762821B2 (ja) 1986-05-30 1995-07-05 株式会社日立製作所 タツチパネル入力装置
US4782328A (en) 1986-10-02 1988-11-01 Product Development Services, Incorporated Ambient-light-responsive touch screen data input method and system
US4891829A (en) 1986-11-19 1990-01-02 Exxon Research And Engineering Company Method and apparatus for utilizing an electro-optic detector in a microtomography system
US4868912A (en) 1986-11-26 1989-09-19 Digital Electronics Infrared touch panel
US4746770A (en) 1987-02-17 1988-05-24 Sensor Frame Incorporated Method and apparatus for isolating and manipulating graphic objects on computer video monitor
US4820050A (en) 1987-04-28 1989-04-11 Wells-Gardner Electronics Corporation Solid-state optical position determining apparatus
FR2614711B1 (fr) 1987-04-29 1992-03-13 Photonetics Procede et dispositif d'exploitation du signal d'ecran d'un ecran tactile
FR2617620B1 (fr) 1987-07-02 1992-09-25 Photonetics Ecran tactile de type optique
FR2617619B1 (fr) 1987-07-02 1990-01-05 Photonetics Dispositif de montage d'ecran tactile optique
US4772763A (en) 1987-08-25 1988-09-20 International Business Machines Corporation Data processing information input using optically sensed stylus features
JPH01195526A (ja) 1988-01-29 1989-08-07 Sony Corp タッチパネル装置
FR2631438B1 (fr) 1988-05-11 1991-06-21 Photonetics Procede de positionnement d'un objet par rapport a un plan, procede de mesure de longueur et dispositifs de mise en oeuvre de ces procedes
US4988983A (en) 1988-09-02 1991-01-29 Carroll Touch, Incorporated Touch entry system with ambient compensation and programmable amplification
US4986662A (en) 1988-12-19 1991-01-22 Amp Incorporated Touch entry using discrete reflectors
FR2645645B1 (fr) 1989-04-06 1991-07-12 Photonetics Perfectionnements aux procedes et dispositifs pour determiner l'angle de contact d'une goutte de liquide posee sur un substrat
US4916712A (en) 1989-07-27 1990-04-10 Mcdonnell Douglas Corporation Optically pumped slab laser
US5065185A (en) 1989-08-21 1991-11-12 Powers Edward A Multi-function detecting device for a document reproduction machine
ATE118208T1 (de) 1989-10-16 1995-02-15 Chiroscience Ltd Chirale azabicycloheptanone und verfahren zu ihrer herstellung.
US5105186A (en) 1990-05-25 1992-04-14 Hewlett-Packard Company Lcd touch screen
US6390370B1 (en) 1990-11-15 2002-05-21 Symbol Technologies, Inc. Light beam scanning pen, scan module for the device and method of utilization
DE4111710C2 (de) 1991-04-10 1995-01-12 Data Stream Corp Drahtlose Eingabevorrichtung für Computer
FR2676275A1 (fr) 1991-05-07 1992-11-13 Photonetics Dispositif de mesure a distance de la position d'un objet.
US5539514A (en) 1991-06-26 1996-07-23 Hitachi, Ltd. Foreign particle inspection apparatus and method with front and back illumination
US5345490A (en) 1991-06-28 1994-09-06 General Electric Company Method and apparatus for converting computed tomography (CT) data into finite element models
US5335557A (en) 1991-11-26 1994-08-09 Taizo Yasutake Touch sensitive input control device
JPH05190066A (ja) 1992-01-14 1993-07-30 Matsushita Electric Ind Co Ltd タッチスイッチの遮光板装置
CA2060564C (en) 1992-02-06 1996-05-21 Toru Suzuki Wireless input system for computer
US5483261A (en) 1992-02-14 1996-01-09 Itu Research, Inc. Graphical input controller and method with rear screen image detection
CH683370A5 (de) 1992-04-10 1994-02-28 Zumbach Electronic Ag Verfahren und Vorrichtung zur Messung der Abmessung eines Objekts.
CA2068191C (en) 1992-05-07 1994-11-22 Fernand Sergerie Reinforced composite backing tape
US5605406A (en) * 1992-08-24 1997-02-25 Bowen; James H. Computer input devices with light activated switches and light emitter protection
US7084859B1 (en) 1992-09-18 2006-08-01 Pryor Timothy R Programmable tactile touch screen displays and man-machine interfaces for improved vehicle instrumentation and telematics
US5248856A (en) 1992-10-07 1993-09-28 Microfield Graphics, Inc. Code-based, electromagnetic-field-responsive graphic data-acquisition system
EP0599297B1 (en) 1992-11-25 1998-05-20 Sumitomo Electric Industries, Limited Method of detecting impurities in molten resin
JP3400485B2 (ja) 1993-03-23 2003-04-28 株式会社ワコム 光学式位置検出装置および光学式座標入力装置
US5502568A (en) 1993-03-23 1996-03-26 Wacom Co., Ltd. Optical position detecting unit, optical coordinate input unit and optical position detecting method employing a pattern having a sequence of 1's and 0's
DE4334937A1 (de) 1993-10-13 1995-10-05 Siemens Ag Computertomograph
JP3135183B2 (ja) 1993-10-29 2001-02-13 株式会社ワコム 位置指示器
WO1995014286A1 (en) 1993-11-17 1995-05-26 Microsoft Corporation Wireless pen computer input system
US5484966A (en) 1993-12-07 1996-01-16 At&T Corp. Sensing stylus position using single 1-D image sensor
JPH07200137A (ja) 1993-12-28 1995-08-04 Wacom Co Ltd 位置検出装置及びその位置指示器
US5515083A (en) 1994-02-17 1996-05-07 Spacelabs Medical, Inc. Touch screen having reduced sensitivity to spurious selections
JPH07261920A (ja) 1994-03-17 1995-10-13 Wacom Co Ltd 光学式位置検出装置および光学式座標入力装置
JP3421416B2 (ja) 1994-03-18 2003-06-30 株式会社ワコム 位置検出装置及びその位置指示器
US5525764A (en) 1994-06-09 1996-06-11 Junkins; John L. Laser scanning graphic input system
US5526422A (en) 1994-06-20 1996-06-11 At&T Corp. System and method for cleaning the display screen of a touch screen device
DE19521254A1 (de) 1994-06-24 1996-01-04 Minnesota Mining & Mfg Anzeigesystem mit Helligkeitsverstärkungsfilm
US5740224A (en) 1994-09-27 1998-04-14 University Of Delaware Cone beam synthetic arrays in three-dimensional computerized tomography
US5686942A (en) 1994-12-01 1997-11-11 National Semiconductor Corporation Remote computer input system which detects point source on operator
US5736686A (en) 1995-03-01 1998-04-07 Gtco Corporation Illumination apparatus for a digitizer tablet with improved light panel
US5729250A (en) 1995-05-08 1998-03-17 International Business Machines Corporation Front cover assembly for a touch sensitive device
US5764223A (en) 1995-06-07 1998-06-09 International Business Machines Corporation Touch-screen input device using the monitor as a light source operating at an intermediate frequency
CA2225734C (en) 1995-06-29 2006-11-14 Lynn Wiese Localized illumination using tir technology
GB9516441D0 (en) 1995-08-10 1995-10-11 Philips Electronics Uk Ltd Light pen input systems
WO1997041527A1 (en) 1996-05-01 1997-11-06 Xros, Inc. Compact, simple, 2d raster, image-building fingerprint scanner
PL330188A1 (en) 1996-05-29 1999-04-26 Deutsche Telekom Ag Information entering apparatus
JPH09319500A (ja) * 1996-05-31 1997-12-12 Stanley Electric Co Ltd 光学式座標入力装置
US6067079A (en) 1996-06-13 2000-05-23 International Business Machines Corporation Virtual pointing device for touchscreens
DE19631414A1 (de) 1996-08-05 1998-02-19 Daimler Benz Ag Vorrichtung zur Aufnahme des Netzhautreflexbildes und Überlagerung von Zusatzbildern im Auge
CN100340957C (zh) 1996-08-12 2007-10-03 埃罗接触系统公司 利用多个互不正交的波的声学条件传感器
US5767517A (en) 1996-10-21 1998-06-16 Board Of Regents -Univ. Of Ne Hybrid resampling method for fan beam spect
DE69739633D1 (de) 1996-11-28 2009-12-10 Casio Computer Co Ltd Anzeigevorrichtung
US6061177A (en) 1996-12-19 2000-05-09 Fujimoto; Kenneth Noboru Integrated computer display and graphical input apparatus and method
WO1998036236A1 (en) 1997-02-13 1998-08-20 Super Dimension Ltd. Six-degree tracking system
JPH113169A (ja) 1997-06-13 1999-01-06 Tokai Rika Co Ltd タッチ操作情報出力装置
US6229529B1 (en) 1997-07-11 2001-05-08 Ricoh Company, Ltd. Write point detecting circuit to detect multiple write points
EP0897161B1 (en) 1997-08-07 2007-10-10 Fujitsu Limited Optical scanning-type touch panel
US6141104A (en) 1997-09-09 2000-10-31 Image Guided Technologies, Inc. System for determination of a location in three dimensional space
US6909419B2 (en) 1997-10-31 2005-06-21 Kopin Corporation Portable microdisplay system
US5945980A (en) 1997-11-14 1999-08-31 Logitech, Inc. Touchpad with active plane for pen detection
US6315156B1 (en) 1998-01-26 2001-11-13 Gpax International, Inc. Tape-form packaging system and apparatus for effecting assembly and disassembly thereof
US9292111B2 (en) 1998-01-26 2016-03-22 Apple Inc. Gesturing with a multipoint sensing device
KR100595924B1 (ko) 1998-01-26 2006-07-05 웨인 웨스터만 수동 입력 통합 방법 및 장치
DE19809934A1 (de) 1998-03-07 1999-09-09 Bosch Gmbh Robert Laserdisplay mit Berührungserfassung
AU6633798A (en) 1998-03-09 1999-09-27 Gou Lite Ltd. Optical translation measurement
US6172667B1 (en) 1998-03-19 2001-01-09 Michel Sayag Optically-based touch screen input device
US6748098B1 (en) 1998-04-14 2004-06-08 General Electric Company Algebraic reconstruction of images from non-equidistant data
US7268774B2 (en) 1998-08-18 2007-09-11 Candledragon, Inc. Tracking motion of a writing instrument
JP3827450B2 (ja) 1998-08-18 2006-09-27 富士通株式会社 光走査型タッチパネル
US6972753B1 (en) 1998-10-02 2005-12-06 Semiconductor Energy Laboratory Co., Ltd. Touch panel, display device provided with touch panel and electronic equipment provided with display device
JP3530758B2 (ja) 1998-12-03 2004-05-24 キヤノン株式会社 座標入力用指示具
JP4007705B2 (ja) 1998-11-20 2007-11-14 富士通株式会社 光走査型タッチパネル
US6175999B1 (en) 1999-01-12 2001-01-23 Dell Usa, L.P. Universal fixture for pre-assembly of computer components
US6335724B1 (en) * 1999-01-29 2002-01-01 Ricoh Company, Ltd. Method and device for inputting coordinate-position and a display board system
JP4245721B2 (ja) 1999-03-05 2009-04-02 プラスビジョン株式会社 座標入力用ペン
US6333735B1 (en) 1999-03-16 2001-12-25 International Business Machines Corporation Method and apparatus for mouse positioning device based on infrared light sources and detectors
JP4097353B2 (ja) 1999-04-07 2008-06-11 富士通株式会社 光走査型タッチパネル
JP4939682B2 (ja) 1999-04-27 2012-05-30 エーユー オプトロニクス コーポレイション 表示装置
DE19924448A1 (de) 1999-05-28 2000-12-07 Siemens Ag Verfahren zur Gewinnung von zeit- und ortsaufgelösten dreidimensionalen Datensätzen mittels der magnetischen Resonanz und Vorrichtung zur Durchführung des Verfahrens
FR2794246B1 (fr) 1999-05-31 2001-08-10 Saint Louis Inst Dispositif apte a determiner la position d'un objet dans un repere oxz
US6799141B1 (en) 1999-06-09 2004-09-28 Beamcontrol Aps Method for determining the channel gain between emitters and receivers
FR2795877B1 (fr) 1999-06-30 2001-10-05 Photonetics Composant optique partiellement reflechissant et source laser incorporant un tel composant
US6366277B1 (en) 1999-10-13 2002-04-02 Elo Touchsystems, Inc. Contaminant processing system for an acoustic touchscreen
JP3606138B2 (ja) 1999-11-05 2005-01-05 セイコーエプソン株式会社 ドライバｉｃ、電気光学装置及び電子機器
JP2001147772A (ja) 1999-11-19 2001-05-29 Fujitsu Takamisawa Component Ltd タッチパネル
JP3780785B2 (ja) 1999-11-30 2006-05-31 三菱電機株式会社 凹凸パターン検出装置
AU772853B2 (en) 1999-12-02 2004-05-06 Elo Touch Solutions, Inc. Apparatus and method to improve resolution of infrared touch systems
JP2001183987A (ja) 1999-12-27 2001-07-06 Pioneer Electronic Corp 冷却構造およびこれを用いたディスプレイ装置
US20040252867A1 (en) 2000-01-05 2004-12-16 Je-Hsiung Lan Biometric sensor
JP3881148B2 (ja) 2000-02-18 2007-02-14 株式会社リコー 座標検出用受光装置、座標入力／検出装置、電子黒板、装着位置検出方法及び記憶媒体
US6495832B1 (en) 2000-03-15 2002-12-17 Touch Controls, Inc. Photoelectric sensing array apparatus and method of using same
WO2001078052A1 (en) 2000-04-05 2001-10-18 Dimensional Media Associates, Inc. Methods and apparatus for virtual touchscreen computer interface controller
US7859519B2 (en) 2000-05-01 2010-12-28 Tulbert David J Human-machine interface
DE10025175A1 (de) 2000-05-24 2001-12-06 Friendlyway Ag Fuer Anwenderfr Einbaurahmen für einen berührungssensitiven Schirm
US6864882B2 (en) 2000-05-24 2005-03-08 Next Holdings Limited Protected touch panel display system
US6690363B2 (en) 2000-06-19 2004-02-10 Next Holdings Limited Touch panel display system
US6660964B1 (en) 2000-09-22 2003-12-09 David Benderly Optical modification of laser beam cross section in object marking systems
US6724489B2 (en) 2000-09-22 2004-04-20 Daniel Freifeld Three dimensional scanning camera
JP2004534974A (ja) 2000-10-27 2004-11-18 エロ・タッチシステムズ・インコーポレイテッド 複数のタッチセンサを利用した接触確認式タッチスクリーン
WO2002037410A1 (en) 2000-11-06 2002-05-10 Koninklijke Philips Electronics N.V. Method of measuring the movement of an input device.
US6648485B1 (en) 2000-11-13 2003-11-18 International Business Machines Corporation Highly collimating tapered light guide for uniform illumination of flat panel displays
CA2472220A1 (en) 2000-12-30 2002-07-11 University Of Leeds Electrical impedance tomography
JP4004025B2 (ja) 2001-02-13 2007-11-07 日東電工株式会社 透明導電性積層体およびタッチパネル
DE10110744A1 (de) 2001-03-07 2002-09-26 Franc Godler Grosser, berührungsempfindlicher Bereich mit zeit- und ortsgesteuerten Sender- und Empfangsmodulen
US6452996B1 (en) 2001-03-16 2002-09-17 Ge Medical Systems Global Technology Company, Llc Methods and apparatus utilizing generalized helical interpolation algorithm
JP4768143B2 (ja) 2001-03-26 2011-09-07 株式会社リコー 情報入出力装置、情報入出力制御方法およびプログラム
US6738051B2 (en) 2001-04-06 2004-05-18 3M Innovative Properties Company Frontlit illuminated touch panel
JP4812181B2 (ja) 2001-04-20 2011-11-09 オリンパス株式会社 観察光学系及び撮像光学系及びそれを用いた装置
US6992659B2 (en) 2001-05-22 2006-01-31 Palmone, Inc. High transparency integrated enclosure touch screen assembly for a portable hand held device
JP3959678B2 (ja) 2001-07-13 2007-08-15 ミネベア株式会社 表示装置用タッチパネル
DE10136611C1 (de) 2001-07-23 2002-11-21 Jenoptik Laserdiode Gmbh Optische Anordnung zur Formung und Homogenisierung eines von einer Laserdiodenanordnung ausgehenden Laserstrahls
US6927384B2 (en) 2001-08-13 2005-08-09 Nokia Mobile Phones Ltd. Method and device for detecting touch pad unit
US6985137B2 (en) 2001-08-13 2006-01-10 Nokia Mobile Phones Ltd. Method for preventing unintended touch pad input due to accidental touching
US6765193B2 (en) 2001-08-21 2004-07-20 National Science And Technology Development Agency Optical touch switch structures
US20030048257A1 (en) 2001-09-06 2003-03-13 Nokia Mobile Phones Ltd. Telephone set having a touch pad device
US7254775B2 (en) 2001-10-03 2007-08-07 3M Innovative Properties Company Touch panel system and method for distinguishing multiple touch inputs
EP1438648A2 (en) 2001-10-09 2004-07-21 Koninklijke Philips Electronics N.V. Device having touch sensitivity functionality
US20100238139A1 (en) 2009-02-15 2010-09-23 Neonode Inc. Optical touch screen systems using wide light beams
US9213443B2 (en) * 2009-02-15 2015-12-15 Neonode Inc. Optical touch screen systems using reflected light
US20150277663A1 (en) * 2001-11-02 2015-10-01 Neonode Inc. Touch screen calibration and update methods
US9471170B2 (en) 2002-11-04 2016-10-18 Neonode Inc. Light-based touch screen with shift-aligned emitter and receiver lenses
US8339379B2 (en) 2004-04-29 2012-12-25 Neonode Inc. Light-based touch screen
US20120188206A1 (en) 2001-11-02 2012-07-26 Neonode, Inc. Optical touch screen with tri-directional micro-lenses
US9052771B2 (en) * 2002-11-04 2015-06-09 Neonode Inc. Touch screen calibration and update methods
US6948840B2 (en) 2001-11-16 2005-09-27 Everbrite, Llc Light emitting diode light bar
US6664498B2 (en) 2001-12-04 2003-12-16 General Atomics Method and apparatus for increasing the material removal rate in laser machining
KR100449710B1 (ko) 2001-12-10 2004-09-22 삼성전자주식회사 원격 포인팅 방법 및 이에 적합한 장치
US7006080B2 (en) 2002-02-19 2006-02-28 Palm, Inc. Display system
JP4477811B2 (ja) 2002-02-27 2010-06-09 Ｈｏｙａ株式会社 固体撮像素子の取付板及びその取付板への取付方法
DE10211307A1 (de) 2002-03-13 2003-11-20 Mechaless Systems Gmbh Vorrichtung und Verfahren zur optoelektronischen Erkennung der Bewegung und/oder Position eines Objekts
MXPA04008817A (es) 2002-03-13 2005-06-17 O Pen Aps Panel tactil, estilete para uso con el panel tactil, y metodo de operacion del panel tactil.
CA2480182C (en) 2002-03-27 2008-02-05 Nellcor Puritan Bennett Incorporated Infrared touchframe system
US20040134772A1 (en) 2002-10-01 2004-07-15 Microfabrica Inc. Monolithic structures including alignment and/or retention fixtures for accepting components
EP1376872B1 (de) 2002-05-07 2007-10-10 Schott Ag Beleuchtungseinrichtung für Schaltflächen
JP2003330603A (ja) 2002-05-13 2003-11-21 Ricoh Co Ltd 座標検出装置、座標検出方法、その方法をコンピュータに実行させる座標検出プログラムおよび座標検出プログラムを記録した記録媒体
US7176897B2 (en) 2002-05-17 2007-02-13 3M Innovative Properties Company Correction of memory effect errors in force-based touch panel systems
US7952570B2 (en) 2002-06-08 2011-05-31 Power2B, Inc. Computer navigation
US20090143141A1 (en) 2002-08-06 2009-06-04 Igt Intelligent Multiplayer Gaming System With Multi-Touch Display
US7151532B2 (en) 2002-08-09 2006-12-19 3M Innovative Properties Company Multifunctional multilayer optical film
JP2004078613A (ja) 2002-08-19 2004-03-11 Fujitsu Ltd タッチパネル装置
US7133031B2 (en) 2002-10-31 2006-11-07 Microsoft Corporation Optical system design for a universal computing device
JP4093308B2 (ja) 2002-11-01 2008-06-04 富士通株式会社 タッチパネル装置及び接触位置検出方法
US8896575B2 (en) * 2002-11-04 2014-11-25 Neonode Inc. Pressure-sensitive touch screen
US8587562B2 (en) 2002-11-04 2013-11-19 Neonode Inc. Light-based touch screen using elliptical and parabolic reflectors
US9389730B2 (en) * 2002-12-10 2016-07-12 Neonode Inc. Light-based touch screen using elongated light guides
US9195344B2 (en) * 2002-12-10 2015-11-24 Neonode Inc. Optical surface using a reflected image for determining three-dimensional position information
US8902196B2 (en) 2002-12-10 2014-12-02 Neonode Inc. Methods for determining a touch location on a touch screen
US7042444B2 (en) 2003-01-17 2006-05-09 Eastman Kodak Company OLED display and touch screen
US7629967B2 (en) 2003-02-14 2009-12-08 Next Holdings Limited Touch screen signal processing
US7532206B2 (en) 2003-03-11 2009-05-12 Smart Technologies Ulc System and method for differentiating between pointers used to contact touch surface
JP2006523869A (ja) 2003-03-12 2006-10-19 オー−プン・アンパルトセルスカブ 放射線を放射する要素の位置を測定するシステム及び方法
US20070034783A1 (en) 2003-03-12 2007-02-15 Eliasson Jonas O P Multitasking radiation sensor
KR100533839B1 (ko) 2003-03-14 2005-12-07 삼성전자주식회사 동작기반 전자기기 제어장치 및 그 제어방법
US7178719B2 (en) 2003-04-07 2007-02-20 Silverbrook Research Pty Ltd Facilitating user interaction
US7786983B2 (en) 2003-04-08 2010-08-31 Poa Sana Liquidating Trust Apparatus and method for a data input device using a light lamina screen
US7133032B2 (en) 2003-04-24 2006-11-07 Eastman Kodak Company OLED display and touch screen
US7362320B2 (en) 2003-06-05 2008-04-22 Hewlett-Packard Development Company, L.P. Electronic device having a light emitting/detecting display screen
JP2005004278A (ja) 2003-06-09 2005-01-06 Ricoh Elemex Corp 座標入力装置
US7432893B2 (en) 2003-06-14 2008-10-07 Massachusetts Institute Of Technology Input device based on frustrated total internal reflection
US7474772B2 (en) 2003-06-25 2009-01-06 Atrua Technologies, Inc. System and method for a miniature user input device
JP4405766B2 (ja) 2003-08-07 2010-01-27 キヤノン株式会社 座標入力装置、座標入力方法
US7796173B2 (en) 2003-08-13 2010-09-14 Lettvin Jonathan D Imaging system
US7359041B2 (en) 2003-09-04 2008-04-15 Avago Technologies Ecbu Ip Pte Ltd Method and system for optically tracking a target using a triangulation technique
CN1867881B (zh) 2003-09-12 2010-08-18 平蛙实验室股份公司 确定辐射散射/反射件的位置的系统和方法
US7442914B2 (en) 2003-09-12 2008-10-28 Flatfrog Laboratories Ab System and method of determining a position of a radiation emitting element
KR100534968B1 (ko) 2003-09-16 2005-12-08 현대자동차주식회사 전자소자의 냉각구조
KR20070005547A (ko) 2003-09-22 2007-01-10 코닌클리케 필립스 일렉트로닉스 엔.브이. 디스플레이 모니터를 위한 좌표 검출 시스템
US20060279558A1 (en) 2003-09-22 2006-12-14 Koninklike Phillips Electronics N.V. Touc input screen using a light guide
US9123077B2 (en) 2003-10-07 2015-09-01 Hospira, Inc. Medication management system
US7221374B2 (en) 2003-10-21 2007-05-22 Hewlett-Packard Development Company, L.P. Adjustment of color in displayed images based on identification of ambient light sources
JP2005165199A (ja) 2003-12-05 2005-06-23 Alps Electric Co Ltd プリズムシート及び照光装置及び面発光装置並びに液晶表示装置
US7265748B2 (en) 2003-12-11 2007-09-04 Nokia Corporation Method and device for detecting touch pad input
EP1704752A4 (en) 2003-12-11 2009-09-23 Philips Solid State Lighting METHOD AND DEVICES FOR THERMAL ADMINISTRATION FOR LIGHTING DEVICES
GB2409304B (en) 2003-12-19 2007-11-14 Westerngeco Ltd Processing geophysical data
JP4616559B2 (ja) 2004-01-15 2011-01-19 大日本印刷株式会社 表示装置及び表示システム
US7087907B1 (en) 2004-02-02 2006-08-08 Advanced Micro Devices, Inc. Detection of contamination in imaging systems by fluorescence and/or absorption spectroscopy
US7342705B2 (en) 2004-02-03 2008-03-11 Idc, Llc Spatial light modulator with integrated optical compensation structure
JP4522113B2 (ja) 2004-03-11 2010-08-11 キヤノン株式会社 座標入力装置
US20060033725A1 (en) 2004-06-03 2006-02-16 Leapfrog Enterprises, Inc. User created interactive interface
US7310090B2 (en) 2004-03-25 2007-12-18 Avago Technologies Ecbm Ip (Singapore) Pte Ltd. Optical generic switch panel
US6965836B2 (en) 2004-04-19 2005-11-15 Battelle Energy Alliance, Llc Method and apparatus for two dimensional surface property analysis based on boundary measurement
US7538759B2 (en) 2004-05-07 2009-05-26 Next Holdings Limited Touch panel display system with illumination and detection provided from a single edge
WO2005112581A2 (en) 2004-05-11 2005-12-01 Motion Computing, Inc. Improved display for stylus input displays
JP4429083B2 (ja) 2004-06-03 2010-03-10 キヤノン株式会社 遮光型座標入力装置及びその座標入力方法
GB0413747D0 (en) 2004-06-19 2004-07-21 Atomic Energy Authority Uk Optical keyboard
US7743348B2 (en) 2004-06-30 2010-06-22 Microsoft Corporation Using physical objects to adjust attributes of an interactive display application
US8184108B2 (en) 2004-06-30 2012-05-22 Poa Sana Liquidating Trust Apparatus and method for a folded optical element waveguide for use with light based touch screens
US7565020B2 (en) 2004-07-03 2009-07-21 Microsoft Corp. System and method for image coding employing a hybrid directional prediction and wavelet lifting
ES2555309T3 (es) 2004-07-06 2015-12-30 Maricare Oy Producto sensor para la detección de campo eléctrico
JP2006039686A (ja) 2004-07-22 2006-02-09 Pioneer Electronic Corp タッチパネル装置、タッチ領域検出方法およびタッチ領域検出プログラム
US7653883B2 (en) 2004-07-30 2010-01-26 Apple Inc. Proximity detector in handheld device
US20060038698A1 (en) 2004-08-19 2006-02-23 Chen Jim T Multi-purpose remote control input device
JP4761736B2 (ja) 2004-08-20 2011-08-31 東芝モバイルディスプレイ株式会社 液晶表示装置
US20060061861A1 (en) 2004-09-23 2006-03-23 Reflexite Corporation High performance rear-projection screen
US20060066586A1 (en) 2004-09-27 2006-03-30 Gally Brian J Touchscreens for displays
WO2006055830A2 (en) 2004-11-15 2006-05-26 Hologic, Inc. Matching geometry generation and display of mammograms and tomosynthesis images
US8599140B2 (en) 2004-11-17 2013-12-03 International Business Machines Corporation Providing a frustrated total internal reflection touch interface
US7847789B2 (en) 2004-11-23 2010-12-07 Microsoft Corporation Reducing accidental touch-sensitive device activation
US20060132454A1 (en) 2004-12-16 2006-06-22 Deng-Peng Chen Systems and methods for high resolution optical touch position systems
US20060158437A1 (en) 2005-01-20 2006-07-20 Blythe Michael M Display device
US7800594B2 (en) 2005-02-03 2010-09-21 Toshiba Matsushita Display Technology Co., Ltd. Display device including function to input information from screen by light
US8298078B2 (en) 2005-02-28 2012-10-30 Wms Gaming Inc. Wagering game machine with biofeedback-aware game presentation
EP1859339A2 (en) 2005-03-10 2007-11-28 Koninklijke Philips Electronics N.V. System and method for detecting the location, size and shape of multiple objects that interact with a touch screen display
US20060202974A1 (en) 2005-03-10 2006-09-14 Jeffrey Thielman Surface
US7705835B2 (en) 2005-03-28 2010-04-27 Adam Eikman Photonic touch screen apparatus and method of use
US7840625B2 (en) 2005-04-07 2010-11-23 California Institute Of Technology Methods for performing fast discrete curvelet transforms of data
JP2008545183A (ja) 2005-05-12 2008-12-11 サーク・コーポレーション 光を所望の方向に向けるためにエーロゲルを使用する光学ディスプレイおよび光学式タッチパッドを含んだ、再構成可能な対話型インターフェース装置
US7646833B1 (en) 2005-05-23 2010-01-12 Marvell International Ltd. Channel equalization in receivers
WO2007003196A2 (en) 2005-07-05 2007-01-11 O-Pen Aps A touch pad system
US7916144B2 (en) 2005-07-13 2011-03-29 Siemens Medical Solutions Usa, Inc. High speed image reconstruction for k-space trajectory data using graphic processing unit (GPU)
US7629968B2 (en) 2005-07-29 2009-12-08 Avago Technologies Fiber Ip (Singapore) Pte. Ltd. Methods and systems for detecting selections on a touch screen display
US7737959B2 (en) 2005-09-08 2010-06-15 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Position detection system using laser speckle
EP1938306B1 (en) 2005-09-08 2013-07-31 Power2B, Inc. Displays and information input devices
KR20070030547A (ko) 2005-09-13 2007-03-16 삼성전자주식회사 집광 부재, 이의 제조 방법 및 이를 갖는 표시 장치
JP4510738B2 (ja) 2005-09-28 2010-07-28 株式会社 日立ディスプレイズ 表示装置
US8847924B2 (en) 2005-10-03 2014-09-30 Hewlett-Packard Development Company, L.P. Reflecting light
JP2007128497A (ja) 2005-10-05 2007-05-24 Sony Corp 表示装置および表示方法
US20070109239A1 (en) 2005-11-14 2007-05-17 Den Boer Willem Integrated light sensitive liquid crystal display
US7655901B2 (en) 2005-11-18 2010-02-02 Research In Motion Limited Light assisted keyboard for mobile communication device
JP2007163891A (ja) 2005-12-14 2007-06-28 Sony Corp 表示装置
JP4684881B2 (ja) * 2005-12-21 2011-05-18 インフォビジョン オプトエレクトロニクス ホールデングズ リミティッド 液晶表示装置と液晶表示装置の製造方法
US8077147B2 (en) 2005-12-30 2011-12-13 Apple Inc. Mouse with optical sensing surface
US8013845B2 (en) 2005-12-30 2011-09-06 Flatfrog Laboratories Ab Optical touch pad with multilayer waveguide
EP1835464A1 (en) 2006-03-14 2007-09-19 GSF-Forschungszentrum für Umwelt und Gesundheit GmbH Method of reconstructing an image function from radon data
EP2005282B1 (en) 2006-03-30 2013-01-30 FlatFrog Laboratories AB A system and a method of determining a position of a scattering/reflecting element on the surface of a radiation transmissive element
TW200809285A (en) * 2006-05-01 2008-02-16 Rpo Pty Ltd Waveguide materials for optical touch screens
US7397418B1 (en) 2006-06-05 2008-07-08 Sandia Corporation SAR image formation with azimuth interpolation after azimuth transform
JP4891666B2 (ja) 2006-06-22 2012-03-07 東芝モバイルディスプレイ株式会社 液晶表示装置
US8237685B2 (en) 2006-06-28 2012-08-07 Koninklijke Philips Electronics N.V. Method and apparatus for object learning and recognition based on optical parameters
US20080007541A1 (en) 2006-07-06 2008-01-10 O-Pen A/S Optical touchpad system and waveguide for use therein
US8031186B2 (en) 2006-07-06 2011-10-04 Flatfrog Laboratories Ab Optical touchpad system and waveguide for use therein
US8094136B2 (en) 2006-07-06 2012-01-10 Flatfrog Laboratories Ab Optical touchpad with three-dimensional position determination
US7351949B2 (en) 2006-07-10 2008-04-01 Avago Technologies General Ip Pte Ltd Optical generic switch panel
US7394058B2 (en) 2006-07-12 2008-07-01 Agilent Technologies, Inc. Touch screen with light-enhancing layer
US8144271B2 (en) 2006-08-03 2012-03-27 Perceptive Pixel Inc. Multi-touch sensing through frustrated total internal reflection
US8441467B2 (en) 2006-08-03 2013-05-14 Perceptive Pixel Inc. Multi-touch sensing display through frustrated total internal reflection
KR20090060283A (ko) 2006-08-03 2009-06-11 퍼셉티브 픽셀 인코포레이티드 좌절형 전반사를 통한 멀티 터치 검출 디스플레이
WO2008015365A2 (fr) 2006-08-03 2008-02-07 France Telecom Dispositif de capture d'images et de saisie haptique
US7969410B2 (en) 2006-08-23 2011-06-28 Avago Technologies General Ip (Singapore) Pte. Ltd. Optically detecting click events
KR20080023832A (ko) 2006-09-12 2008-03-17 삼성전자주식회사 휴대 단말기용 터치 스크린 및 그의 절전 방법
WO2008032270A2 (en) 2006-09-13 2008-03-20 Koninklijke Philips Electronics N.V. Determining the orientation of an object
JP4842747B2 (ja) 2006-09-20 2011-12-21 株式会社リコー 光走査装置、画像形成装置およびカラー画像形成装置
WO2008034184A1 (en) * 2006-09-22 2008-03-27 Rpo Pty Limited Waveguide configurations for optical touch systems
JP4567028B2 (ja) 2006-09-26 2010-10-20 エルジー ディスプレイ カンパニー リミテッド マルチタッチ感知機能を有する液晶表示装置とその駆動方法
KR100782431B1 (ko) 2006-09-29 2007-12-05 주식회사 넥시오 적외선 터치스크린의 다점 좌표인식방법 및 접점면적인식방법
US7369724B2 (en) 2006-10-03 2008-05-06 National Semiconductor Corporation Apparatus and method for an improved lens structure for polymer wave guides which maximizes free space light coupling
US9063617B2 (en) 2006-10-16 2015-06-23 Flatfrog Laboratories Ab Interactive display system, tool for use with the system, and tool management apparatus
US8189328B2 (en) * 2006-10-23 2012-05-29 Virident Systems, Inc. Methods and apparatus of dual inline memory modules for flash memory
US8094129B2 (en) 2006-11-27 2012-01-10 Microsoft Corporation Touch sensing using shadow and reflective modes
US8269746B2 (en) 2006-11-27 2012-09-18 Microsoft Corporation Communication with a touch screen
US7924272B2 (en) 2006-11-27 2011-04-12 Microsoft Corporation Infrared sensor integrated in a touch panel
JPWO2008066004A1 (ja) 2006-11-30 2010-03-04 株式会社セガ 位置入力装置
EP2126673A4 (en) 2006-12-08 2015-03-04 Flatfrog Lab Ab POSITION DETERMINATION IN OPTICAL INTERFACE SYSTEMS
TWM314487U (en) 2006-12-20 2007-06-21 Amtran Technology Co Ltd Remote control having the audio-video function
JP4775247B2 (ja) 2006-12-21 2011-09-21 三菱電機株式会社 位置検出装置
KR100833753B1 (ko) 2006-12-21 2008-05-30 삼성에스디아이 주식회사 유기 전계 발광 표시 장치 및 그 구동방법
CN101211246B (zh) 2006-12-26 2010-06-23 乐金显示有限公司 有机发光二极管板和包括其的触摸屏系统
US8125455B2 (en) 2007-01-03 2012-02-28 Apple Inc. Full scale calibration measurement for multi-touch surfaces
JP2008181411A (ja) 2007-01-25 2008-08-07 Nitto Denko Corp タッチパネル用光導波路
TWM318760U (en) 2007-01-26 2007-09-11 Pixart Imaging Inc Remote controller
US20080189046A1 (en) 2007-02-02 2008-08-07 O-Pen A/S Optical tool with dynamic electromagnetic radiation and a system and method for determining the position and/or motion of an optical tool
US20080192025A1 (en) 2007-02-13 2008-08-14 Denny Jaeger Touch input devices for display/sensor screen
WO2008112146A2 (en) 2007-03-07 2008-09-18 The Trustees Of The University Of Pennsylvania 2d partially parallel imaging with k-space surrounding neighbors based data reconstruction
WO2008112886A1 (en) 2007-03-13 2008-09-18 Evident Technologies, Inc. Infrared display with luminescent quantum dots
US8243048B2 (en) 2007-04-25 2012-08-14 Elo Touch Solutions, Inc. Touchscreen for detecting multiple touches
EP2156276A4 (en) 2007-05-11 2011-12-07 Rpo Pty Ltd PERMANENT BODY
EP1995613A1 (en) 2007-05-21 2008-11-26 Rohm and Haas Denmark Finance A/S Mini Lightbar Illuminators For LCD Displays
US7936341B2 (en) 2007-05-30 2011-05-03 Microsoft Corporation Recognizing selection regions from multiple simultaneous inputs
JP2010528381A (ja) 2007-05-30 2010-08-19 マーティン ポインティング ディバイシズ ガイド線を有するタッチ式ポインティング・デバイス
CN101075168B (zh) 2007-06-22 2014-04-02 北京汇冠新技术股份有限公司 一种识别红外触摸屏上多个触摸点的方法
JP4368392B2 (ja) 2007-06-13 2009-11-18 東海ゴム工業株式会社 変形センサシステム
US7835999B2 (en) 2007-06-27 2010-11-16 Microsoft Corporation Recognizing input gestures using a multi-touch input device, calculated graphs, and a neural network with link weights
US9019245B2 (en) 2007-06-28 2015-04-28 Intel Corporation Multi-function tablet pen input device
EP2009541B1 (en) 2007-06-29 2015-06-10 Barco N.V. Night vision touchscreen
JP2009043636A (ja) 2007-08-10 2009-02-26 Mitsubishi Electric Corp 面状光源装置および表示装置
KR20100075460A (ko) 2007-08-30 2010-07-02 넥스트 홀딩스 인코포레이티드 저 프로파일 터치 패널 시스템
US20090066648A1 (en) 2007-09-07 2009-03-12 Apple Inc. Gui applications for use with 3d remote controller
WO2009036001A1 (en) 2007-09-10 2009-03-19 Lighting Science Group Corporation Warm white lighting device
US20090067178A1 (en) 2007-09-11 2009-03-12 Kismart Corporation Method of forming light-scattering dots inside the diffusion plate and light guide plate by laser engraving
US8122384B2 (en) 2007-09-18 2012-02-21 Palo Alto Research Center Incorporated Method and apparatus for selecting an object within a user interface by performing a gesture
US8395588B2 (en) 2007-09-19 2013-03-12 Canon Kabushiki Kaisha Touch panel
US8587559B2 (en) 2007-09-28 2013-11-19 Samsung Electronics Co., Ltd. Multipoint nanostructure-film touch screen
US8004502B2 (en) 2007-10-05 2011-08-23 Microsoft Corporation Correcting for ambient light in an optical touch-sensitive device
WO2009048365A1 (en) 2007-10-10 2009-04-16 Flatfrog Laboratories Ab A touch pad and a method of operating the touch pad
US20100073318A1 (en) 2008-09-24 2010-03-25 Matsushita Electric Industrial Co., Ltd. Multi-touch surface providing detection and tracking of multiple touch points
CN100501657C (zh) 2007-11-05 2009-06-17 广东威创视讯科技股份有限公司 一种触摸屏装置及触摸屏装置的定位方法
JP5082779B2 (ja) 2007-11-07 2012-11-28 株式会社日立製作所 平面型表示装置
KR101407300B1 (ko) 2007-11-19 2014-06-13 엘지디스플레이 주식회사 멀티 터치 평판 표시모듈
AR064377A1 (es) 2007-12-17 2009-04-01 Rovere Victor Manuel Suarez Dispositivo para sensar multiples areas de contacto contra objetos en forma simultanea
JP5381715B2 (ja) 2007-12-17 2014-01-08 日本電気株式会社 入力装置及びそれを備えた情報端末、入力方法
US20090168459A1 (en) 2007-12-27 2009-07-02 Qualcomm Incorporated Light guide including conjugate film
US20090174679A1 (en) 2008-01-04 2009-07-09 Wayne Carl Westerman Selective Rejection of Touch Contacts in an Edge Region of a Touch Surface
RU2519392C2 (ru) * 2008-01-11 2014-06-10 О-Нэт Вэйв Тач Лимитед Сенсорное устройство
US20090187842A1 (en) 2008-01-22 2009-07-23 3Dlabs Inc., Ltd. Drag and Drop User Interface for Portable Electronic Devices with Touch Sensitive Screens
US9857915B2 (en) 2008-01-25 2018-01-02 Microsoft Technology Licensing, Llc Touch sensing for curved displays
CN101971129A (zh) 2008-02-11 2011-02-09 奈克斯特控股有限公司 解决光学触摸屏的多点触摸情景的系统和方法
EP2088500A1 (en) 2008-02-11 2009-08-12 Idean Enterprises Oy Layer based user interface
US8766925B2 (en) 2008-02-28 2014-07-01 New York University Method and apparatus for providing input to a processor, and a sensor pad
US9454256B2 (en) 2008-03-14 2016-09-27 Apple Inc. Sensor configurations of an input device that are switchable based on mode
US8154418B2 (en) * 2008-03-31 2012-04-10 Magna Mirrors Of America, Inc. Interior rearview mirror system
WO2009126710A2 (en) 2008-04-10 2009-10-15 Perceptive Pixel, Inc. Methods of interfacing with multi-input devices and multi-input display systems employing interfacing techniques
US8209628B1 (en) 2008-04-11 2012-06-26 Perceptive Pixel, Inc. Pressure-sensitive manipulation of displayed objects
KR101277951B1 (ko) 2008-04-23 2013-06-27 엘지디스플레이 주식회사 표시장치
TW200945123A (en) 2008-04-25 2009-11-01 Ind Tech Res Inst A multi-touch position tracking apparatus and interactive system and image processing method there of
US20090278816A1 (en) 2008-05-06 2009-11-12 Next Holdings Limited Systems and Methods For Resolving Multitouch Scenarios Using Software Filters
US8830181B1 (en) 2008-06-01 2014-09-09 Cypress Semiconductor Corporation Gesture recognition system for a touch-sensing surface
US8676007B2 (en) * 2008-06-19 2014-03-18 Neonode Inc. Light-based touch surface with curved borders and sloping bezel
US8553014B2 (en) 2008-06-19 2013-10-08 Neonode Inc. Optical touch screen systems using total internal reflection
TW201001258A (en) 2008-06-23 2010-01-01 Flatfrog Lab Ab Determining the location of one or more objects on a touch surface
TW201013492A (en) 2008-06-23 2010-04-01 Flatfrog Lab Ab Determining the location of one or more objects on a touch surface
TW201005606A (en) 2008-06-23 2010-02-01 Flatfrog Lab Ab Detecting the locations of a plurality of objects on a touch surface
TW201007530A (en) 2008-06-23 2010-02-16 Flatfrog Lab Ab Detecting the location of an object on a touch surface
WO2010006885A2 (en) 2008-06-23 2010-01-21 Flatfrog Laboratories Ab Detecting the location of an object on a touch surface
CN101644854A (zh) 2008-08-04 2010-02-10 鸿富锦精密工业（深圳）有限公司 直下式背光模组
CN201233592Y (zh) 2008-08-05 2009-05-06 北京汇冠新技术有限公司 用于红外触摸屏的反射光路结构
JP5003629B2 (ja) 2008-08-06 2012-08-15 パナソニック株式会社 情報端末装置
WO2010015410A2 (en) 2008-08-07 2010-02-11 Owen Drumm Optical control systems with modulated emitters
US9092092B2 (en) 2008-08-07 2015-07-28 Rapt Ip Limited Detecting multitouch events in an optical touch-sensitive device using touch event templates
CN102177492B (zh) 2008-08-07 2014-08-13 拉普特知识产权公司 具有反馈控制的光学控制系统
JP5378519B2 (ja) 2008-08-07 2013-12-25 ドラム，オウエン 光学タッチセンサー式デバイスにおけるマルチタッチ事象を検出する方法および装置
US8531435B2 (en) 2008-08-07 2013-09-10 Rapt Ip Limited Detecting multitouch events in an optical touch-sensitive device by combining beam information
US8188986B2 (en) 2008-09-23 2012-05-29 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. User input device with dynamic ambient light calibration
US8093545B2 (en) 2008-09-26 2012-01-10 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Lensless user input device with optical interference based on diffraction with a small aperture
US8237684B2 (en) 2008-09-26 2012-08-07 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. User input device with planar light guide illumination plate
US9317159B2 (en) 2008-09-26 2016-04-19 Hewlett-Packard Development Company, L.P. Identifying actual touch points using spatial dimension information obtained from light transceivers
EP2353069B1 (en) 2008-10-02 2013-07-03 Next Holdings Limited Stereo optical sensors for resolving multi-touch in a touch detection system
KR100972932B1 (ko) 2008-10-16 2010-07-28 인하대학교 산학협력단 터치 스크린 패널
KR101323045B1 (ko) 2008-10-21 2013-10-29 엘지디스플레이 주식회사 감지장치와 그 출력 증폭방법
FI121862B (fi) 2008-10-24 2011-05-13 Valtion Teknillinen Järjestely kosketusnäyttöä varten ja vastaava valmistusmenetelmä
EP2356551A4 (en) 2008-11-12 2012-05-02 Flatfrog Lab Ab INTEGRATED TOUCH PANEL DISPLAY APPARATUS AND METHOD OF OPERATION
US20100125438A1 (en) 2008-11-15 2010-05-20 Mathieu Audet Method of scanning, analyzing and identifying electro magnetic field sources
KR100940435B1 (ko) 2008-11-26 2010-02-10 한국광기술원 2차원 광섬유 스캐닝 모듈, 이를 구비하는 광섬유 스캐닝 시스템 및 방법
SE533704C2 (sv) * 2008-12-05 2010-12-07 Flatfrog Lab Ab Pekkänslig apparat och förfarande för drivning av densamma
US8317352B2 (en) 2008-12-11 2012-11-27 Robert Saccomanno Non-invasive injection of light into a transparent substrate, such as a window pane through its face
JP5239835B2 (ja) 2008-12-24 2013-07-17 富士ゼロックス株式会社 光導波路及び光導波路型タッチパネル
US8243426B2 (en) * 2008-12-31 2012-08-14 Apple Inc. Reducing optical effects in a display
US8407606B1 (en) 2009-01-02 2013-03-26 Perceptive Pixel Inc. Allocating control among inputs concurrently engaging an object displayed on a multi-touch device
DE102009003990A1 (de) 2009-01-07 2010-07-08 Wincor Nixdorf International Gmbh Berührungssensitive Eingabevorrichtung
WO2010081702A2 (de) 2009-01-14 2010-07-22 Citron Gmbh Multitouch-bedienfeld
US8487914B2 (en) 2009-06-18 2013-07-16 Avago Technologies General Ip (Singapore) Pte. Ltd. Optical fingerprint navigation device with light guide film
US20130181896A1 (en) 2009-01-23 2013-07-18 Qualcomm Mems Technologies, Inc. Integrated light emitting and light detecting device
RU2011128779A (ru) 2009-01-23 2013-02-27 Квалкомм Мемс Текнолоджис, Инк. Интегрированное светоизлучающее и фотоэлектрическое устройство
KR101296660B1 (ko) * 2009-02-11 2013-08-14 엘지디스플레이 주식회사 액정표시장치 및 그 제조방법
WO2010092993A1 (ja) 2009-02-13 2010-08-19 株式会社 東芝 情報処理装置
US9063614B2 (en) * 2009-02-15 2015-06-23 Neonode Inc. Optical touch screens
US9158416B2 (en) * 2009-02-15 2015-10-13 Neonode Inc. Resilient light-based touch surface
US8976158B2 (en) 2009-02-15 2015-03-10 Neonode Inc. User interface for white goods and associated multi-channel proximity sensors
KR101081586B1 (ko) 2009-02-24 2011-11-08 삼성전기주식회사 촉감제시 인터페이스 장치
EP2654017A3 (de) 2009-02-20 2016-12-07 Werth Messtechnik GmbH Verfahren zum Messen eines Objekts
US8331751B2 (en) 2009-03-02 2012-12-11 mBio Diagnositcs, Inc. Planar optical waveguide with core of low-index-of-refraction interrogation medium
JP5269648B2 (ja) 2009-03-02 2013-08-21 パナソニック株式会社 携帯端末装置及び入力装置
WO2010100796A1 (ja) 2009-03-06 2010-09-10 シャープ株式会社 表示装置
TWI524238B (zh) 2009-03-31 2016-03-01 萬國商業機器公司 多觸點光學接觸面板
TWI399677B (zh) 2009-03-31 2013-06-21 Arima Lasers Corp 光學偵測裝置及其方法
JP5146389B2 (ja) 2009-04-03 2013-02-20 ソニー株式会社 情報処理装置、および推定方法
US8455904B2 (en) 2009-04-20 2013-06-04 3M Innovative Properties Company Non-radiatively pumped wavelength converter
JP2012027511A (ja) * 2009-04-23 2012-02-09 Univ Of Tsukuba 入力装置
FI124221B (fi) 2009-04-24 2014-05-15 Valtion Teknillinen Käyttäjäsyötejärjestely ja siihen liittyvä valmistusmenetelmä
US20100277436A1 (en) 2009-04-29 2010-11-04 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Sensing System for a Touch Sensitive Device
US8611626B2 (en) 2009-04-30 2013-12-17 The Regents Of The University Of California System and methods for fast implementation of equally-sloped tomography
US20100283785A1 (en) 2009-05-11 2010-11-11 Agilent Technologies, Inc. Detecting peaks in two-dimensional signals
US8154529B2 (en) 2009-05-14 2012-04-10 Atmel Corporation Two-dimensional touch sensors
EP2433204A4 (en) 2009-05-18 2014-07-23 Flatfrog Lab Ab DETERMINING THE LOCATION OF AN OBJECT ON A TOUCH SURFACE
WO2010134899A1 (en) 2009-05-20 2010-11-25 Tom Chang Optical touch panel
US20100315379A1 (en) 2009-05-22 2010-12-16 Matthew Allard Display Devices With Integrated Optical Components For Use in Position Detection
US8358901B2 (en) 2009-05-28 2013-01-22 Microsoft Corporation Optic having a cladding
US9323396B2 (en) 2009-06-01 2016-04-26 Perceptive Pixel, Inc. Touch sensing
US8736581B2 (en) 2009-06-01 2014-05-27 Perceptive Pixel Inc. Touch sensing with frustrated total internal reflection
TWI414974B (zh) 2009-06-17 2013-11-11 Novatek Microelectronics Corp 觸控面板之觸碰點位置感應方法及位置感應系統
TWI420371B (zh) 2009-06-23 2013-12-21 Raydium Semiconductor Corportation 光學式觸控系統及其運作方法
WO2010149651A1 (en) 2009-06-23 2010-12-29 Imec Optical tactile sensors
CN201437963U (zh) 2009-07-07 2010-04-14 台湾奈普光电科技股份有限公司 导光板结构改良
JP2012533125A (ja) 2009-07-16 2012-12-20 オーピーディーアイ テクノロジーズ エー／エス 物体の位置を符号化する装置、システム、および方法
CN201465071U (zh) 2009-07-20 2010-05-12 贺伟 红外线触摸屏框架结构
KR100941927B1 (ko) 2009-08-21 2010-02-18 이성호 터치입력 인식방법 및 장치
US8730212B2 (en) 2009-08-21 2014-05-20 Microsoft Corporation Illuminator for touch- and object-sensitive display
WO2011023225A1 (en) 2009-08-25 2011-03-03 Promethean Ltd Interactive surface with a plurality of input detection technologies
US7932899B2 (en) 2009-09-01 2011-04-26 Next Holdings Limited Determining the location of touch points in a position detection system
KR101738190B1 (ko) 2009-09-02 2017-05-29 플라트프로그 라보라토리즈 에이비 보상 신호 프로파일을 갖는 터치 표면
SE534244C2 (sv) 2009-09-02 2011-06-14 Flatfrog Lab Ab Pekkänsligt system och förfarande för funktionsstyrning av detsamma
US9035909B2 (en) 2009-09-11 2015-05-19 Flatfrog Laboratories Ab Touch surface with variable refractive index
KR101606883B1 (ko) 2009-09-18 2016-04-12 삼성디스플레이 주식회사 터치감지장치
EP2480954A4 (en) * 2009-09-22 2014-03-19 Rpo Pty Ltd PROJECTION SYSTEMS FOR TOUCH ENTRY DEVICES
KR20110032640A (ko) 2009-09-23 2011-03-30 삼성전자주식회사 멀티 터치 인식 디스플레이 장치
DE102009042922B4 (de) 2009-09-24 2019-01-24 Siemens Healthcare Gmbh Verfahren und Vorrichtung zur Bildbestimmung aus beim Durchlaufen einer Trajektorie aufgenommenen Röntgenprojektionen
US8749512B2 (en) 2009-09-30 2014-06-10 Apple Inc. Negative pixel compensation
US8816991B2 (en) 2009-10-02 2014-08-26 Dedo Interactive, Inc. Touch input apparatus including image projection
US8373679B2 (en) 2009-10-12 2013-02-12 Garmin International, Inc. Infrared touchscreen electronics
KR20120095926A (ko) 2009-10-19 2012-08-29 플라트프로그 라보라토리즈 에이비 2차원 보상을 가지는 터치 면
KR20120083915A (ko) 2009-10-19 2012-07-26 플라트프로그 라보라토리즈 에이비 터치면 상의 하나 이상의 객체에 대한 터치 데이터를 결정하는 방법
US9024916B2 (en) 2009-10-19 2015-05-05 Flatfrog Laboratories Ab Extracting touch data that represents one or more objects on a touch surface
JP5483996B2 (ja) 2009-10-23 2014-05-07 キヤノン株式会社 補償光学装置、撮像装置、補償光学方法
CN201927010U (zh) 2009-11-12 2011-08-10 北京汇冠新技术股份有限公司 一种触摸屏、触摸系统及光源
US9280237B2 (en) * 2009-11-17 2016-03-08 Zetta Research and Development LLC—RPO Series Apparatus and method for receiving a touch input
US20110115748A1 (en) 2009-11-18 2011-05-19 Amlogic Co., Ltd. Infrared Touch Screen
KR101627715B1 (ko) 2009-11-18 2016-06-14 엘지전자 주식회사 터치 패널, 터치 패널의 구동방법 및 터치 패널을 포함하는 디스플레이 장치
KR20110056892A (ko) 2009-11-23 2011-05-31 삼성전자주식회사 Ｌｃｄ 디스플레이장치의 멀티 터치 감지장치 및 이를 이용한 멀티 터치 감지방법
US8436833B2 (en) 2009-11-25 2013-05-07 Corning Incorporated Methods and apparatus for sensing touch events on a display
TWI425396B (zh) 2009-11-25 2014-02-01 Coretronic Corp 光學觸控裝置與光學觸控顯示裝置
TWM379163U (en) 2009-11-26 2010-04-21 Truelight Corp Packaging apparatus for high power and high orientation matrix semiconductor light-emitting devices
GB0921216D0 (en) 2009-12-03 2010-01-20 St Microelectronics Res & Dev Improved touch screen device
WO2011069152A2 (en) 2009-12-04 2011-06-09 Next Holdings Limited Imaging methods and systems for position detection
KR101926406B1 (ko) 2009-12-11 2018-12-07 넥스트 홀딩스 리미티드 터치 스크린용 위치 검출 시스템 및 이에 사용하는 프리즘 필름
CN102096526B (zh) 2009-12-15 2015-11-25 乐金显示有限公司 光学传感单元、显示模块和使用光学传感单元的显示装置
KR101736233B1 (ko) 2009-12-16 2017-05-16 베이징 아이어터치 시스템 코퍼레이션 리미티드 적외선 터치 스크린
EP2517090A1 (en) 2009-12-21 2012-10-31 FlatFrog Laboratories AB Touch surface with identification of reduced performance
KR101579091B1 (ko) 2010-01-07 2015-12-22 삼성디스플레이 주식회사 터치 위치 검출 방법, 이를 수행하기 위한 터치 위치 검출 장치 및 터치 위치 검출 장치를 포함하는 표시 장치
US8502789B2 (en) 2010-01-11 2013-08-06 Smart Technologies Ulc Method for handling user input in an interactive input system, and interactive input system executing the method
KR101704695B1 (ko) 2010-03-09 2017-02-09 삼성디스플레이 주식회사 터치 위치 검출 방법, 이를 수행하기 위한 터치 위치 검출 장치 및 터치 위치 검출 장치를 포함하는 표시 장치
KR20110103140A (ko) 2010-03-12 2011-09-20 삼성전자주식회사 선택적으로 광을 조사하는 멀티터치 및 근접한 오브젝트 센싱 장치
FR2957718B1 (fr) 2010-03-16 2012-04-20 Commissariat Energie Atomique Diode electroluminescente hybride a rendement eleve
KR101749266B1 (ko) 2010-03-24 2017-07-04 삼성디스플레이 주식회사 터치감지 표시 장치 및 컴퓨터용 기록매체
CN101930322B (zh) 2010-03-26 2012-05-23 深圳市天时通科技有限公司 一种可同时识别触摸屏多个触点的识别方法
JP2011227574A (ja) 2010-04-15 2011-11-10 Rohm Co Ltd 演算装置、動き検出装置、電子機器
WO2011130919A1 (en) 2010-04-23 2011-10-27 Motorola Mobility, Inc. Electronic device and method using touch-detecting surface
JP5523191B2 (ja) 2010-04-30 2014-06-18 株式会社ジャパンディスプレイ タッチ検出機能付き表示装置
TW201203052A (en) 2010-05-03 2012-01-16 Flatfrog Lab Ab Touch determination by tomographic reconstruction
US9128250B2 (en) * 2010-05-21 2015-09-08 Zetta Research and Development LLC—RPO Series Optical systems for infrared touch screens
US8274495B2 (en) 2010-05-25 2012-09-25 General Display, Ltd. System and method for contactless touch screen
US8294168B2 (en) 2010-06-04 2012-10-23 Samsung Electronics Co., Ltd. Light source module using quantum dots, backlight unit employing the light source module, display apparatus, and illumination apparatus
WO2012002894A1 (en) 2010-07-01 2012-01-05 Flatfrog Laboratories Ab Data processing in relation to a multi-touch sensing apparatus
CN102339168B (zh) 2010-07-21 2013-10-16 北京汇冠新技术股份有限公司 一种触摸屏及其多路采样的方法
US20120019448A1 (en) 2010-07-22 2012-01-26 Nokia Corporation User Interface with Touch Pressure Level Sensing
CN101882034B (zh) 2010-07-23 2013-02-13 广东威创视讯科技股份有限公司 触摸装置的触摸笔颜色识别装置及方法
KR20120012571A (ko) 2010-08-02 2012-02-10 엘지이노텍 주식회사 광학 터치 스크린 및 그의 조립 방법
US8648970B2 (en) 2010-08-02 2014-02-11 Chip Goal Electronics Corporation, Roc Remote controllable video display system and controller and method therefor
JP2012043136A (ja) * 2010-08-18 2012-03-01 Nitto Denko Corp タッチパネル用光導波路
US9092089B2 (en) 2010-09-15 2015-07-28 Advanced Silicon Sa Method for detecting an arbitrary number of touches from a multi-touch device
US9223431B2 (en) * 2010-09-17 2015-12-29 Blackberry Limited Touch-sensitive display with depression detection and method
US9411444B2 (en) 2010-10-11 2016-08-09 Flatfrog Laboratories Ab Touch determination by tomographic reconstruction
EP2628069B1 (en) * 2010-10-12 2020-12-02 New York University Apparatus for sensing utilizing tiles, sensor having a set of plates, object identification for multi-touch surfaces, and method
TWI422908B (zh) 2010-10-12 2014-01-11 Au Optronics Corp 觸控顯示裝置
US8654064B2 (en) 2010-10-18 2014-02-18 Samsung Display Co., Ltd. Backlight having blue light emitting diodes and method of driving same
US9092135B2 (en) 2010-11-01 2015-07-28 Sony Computer Entertainment Inc. Control of virtual object using device touch interface functionality
US20130234991A1 (en) 2010-11-07 2013-09-12 Neonode Inc. Optimized hemi-ellipsoidal led shell
US20120131490A1 (en) 2010-11-22 2012-05-24 Shao-Chieh Lin Touch-controlled device and method for displaying a virtual keyboard on the touch-controlled device thereof
US8503753B2 (en) 2010-12-02 2013-08-06 Kabushiki Kaisha Toshiba System and method for triangular interpolation in image reconstruction for PET
EP2652582A4 (en) 2010-12-15 2017-06-21 FlatFrog Laboratories AB Touch determination with signal enhancement
EP2466429A1 (en) 2010-12-16 2012-06-20 FlatFrog Laboratories AB Scanning ftir systems for touch detection
EP2466428A3 (en) * 2010-12-16 2015-07-29 FlatFrog Laboratories AB Touch apparatus with separated compartments
US8546741B2 (en) 2011-01-13 2013-10-01 Avago Technologies General Ip (Singapore) Pte. Ltd. Compact optical finger navigation system based on speckles with an optical element including an optical redirection surface
US8635560B2 (en) 2011-01-21 2014-01-21 Blackberry Limited System and method for reducing power consumption in an electronic device having a touch-sensitive display
EP2479642B1 (en) 2011-01-21 2017-08-16 BlackBerry Limited System and method for reducing power consumption in an electronic device having a touch-sensitive display
EP2671141B1 (en) 2011-02-02 2016-05-25 FlatFrog Laboratories AB Optical incoupling for touch-sensitive systems
US8619062B2 (en) 2011-02-03 2013-12-31 Microsoft Corporation Touch-pressure sensing in a display panel
US9201520B2 (en) 2011-02-11 2015-12-01 Microsoft Technology Licensing, Llc Motion and context sharing for pen-based computing inputs
US8624858B2 (en) 2011-02-14 2014-01-07 Blackberry Limited Portable electronic device including touch-sensitive display and method of controlling same
US8912905B2 (en) 2011-02-28 2014-12-16 Chon Meng Wong LED lighting system
CN102117155A (zh) * 2011-03-02 2011-07-06 广州视睿电子科技有限公司 凹面光学触摸屏
TWI518562B (zh) * 2011-03-09 2016-01-21 元太科技工業股份有限公司 行動裝置
US9411464B2 (en) 2011-03-09 2016-08-09 Flatfrog Laboratories Ab Touch determination with signal compensation
TWI441059B (zh) 2011-03-21 2014-06-11 Au Optronics Corp 觸控模組
TW201239710A (en) 2011-03-29 2012-10-01 Genius Electronic Optical Co Ltd Optical touch system
JP6018624B2 (ja) 2011-04-19 2016-11-02 パーセプティブ ピクセル インコーポレイテッド タッチセンシング用光学フィルタ処理センサ・イン・ピクセル技術
US8558788B2 (en) 2011-04-29 2013-10-15 Hewlett-Packard Development Company, L.P. Diffusing light of a laser
KR101888222B1 (ko) 2011-05-13 2018-08-13 쓰리엠 이노베이티브 프로퍼티즈 컴파니 가변 굴절률 광 추출 층을 갖는 후방 조명 투과형 디스플레이
US20140085241A1 (en) 2011-05-16 2014-03-27 Flatfrog Laboratories Ab Device and method for determining reduced performance of a touch sensitive apparatus
US9001086B1 (en) 2011-06-08 2015-04-07 Amazon Technologies, Inc. Display illumination with light-based touch sensing
KR102269361B1 (ko) 2011-06-15 2021-06-25 바안토 인터내셔널 엘티디. 모듈형 위치 감지 시스템에 대한 탑재 시스템
GB201110218D0 (en) 2011-06-16 2011-08-03 St Microelectronics Res & Dev Optical navigation device
JP5453351B2 (ja) 2011-06-24 2014-03-26 株式会社Ｎｔｔドコモ 移動情報端末、操作状態判定方法、プログラム
KR101260341B1 (ko) * 2011-07-01 2013-05-06 주식회사 알엔디플러스 멀티 터치 인식 장치
US8963886B2 (en) 2011-07-13 2015-02-24 Flatfrog Laboratories Ab Touch-sensing display panel
US8884900B2 (en) 2011-07-13 2014-11-11 Flatfrog Laboratories Ab Touch-sensing display apparatus and electronic device therewith
EP2734914B1 (en) 2011-07-22 2016-11-23 Rapt IP Limited Optical coupler for use in an optical touch sensitive device
US9075561B2 (en) 2011-07-29 2015-07-07 Apple Inc. Systems, methods, and computer-readable media for managing collaboration on a virtual work of art
WO2013062471A2 (en) 2011-10-27 2013-05-02 Flatfrog Laboratories Ab Touch determination by tomographic reconstruction
US8959435B2 (en) 2011-08-23 2015-02-17 Garmin Switzerland Gmbh System and methods for detecting debris on a touchscreen system display screen
KR101862123B1 (ko) 2011-08-31 2018-05-30 삼성전자 주식회사 휴대단말기의 입력 장치 및 방법
JP2013058084A (ja) * 2011-09-08 2013-03-28 Nitto Denko Corp 入力表示システム
WO2013036192A1 (en) 2011-09-09 2013-03-14 Flatfrog Laboratories Ab Light coupling structures for optical touch panels
TW201329821A (zh) 2011-09-27 2013-07-16 Flatfrog Lab Ab 用於觸控決定的影像重建技術
US9019240B2 (en) 2011-09-29 2015-04-28 Qualcomm Mems Technologies, Inc. Optical touch device with pixilated light-turning features
TW201333787A (zh) 2011-10-11 2013-08-16 Flatfrog Lab Ab 觸控系統中改良的多點觸控偵測
US20130106709A1 (en) 2011-10-28 2013-05-02 Martin John Simmons Touch Sensor With User Identification
JP5846631B2 (ja) 2011-11-02 2016-01-20 株式会社エンプラス 導光板およびこれを備えた光学系
US9582178B2 (en) 2011-11-07 2017-02-28 Immersion Corporation Systems and methods for multi-pressure interaction on touch-sensitive surfaces
US20130125016A1 (en) 2011-11-11 2013-05-16 Barnesandnoble.Com Llc System and method for transferring content between devices
CN104160366A (zh) 2011-11-28 2014-11-19 康宁股份有限公司 使用平面透明薄板的稳固的光学触摸屏系统和方法
WO2013081894A1 (en) 2011-11-28 2013-06-06 Corning Incorporated Optical touch-screen systems and methods using a planar transparent sheet
US9823781B2 (en) 2011-12-06 2017-11-21 Nri R&D Patent Licensing, Llc Heterogeneous tactile sensing via multiple sensor types
US10022498B2 (en) 2011-12-16 2018-07-17 Icu Medical, Inc. System for monitoring and delivering medication to a patient and method of using the same to minimize the risks associated with automated therapy
US9927920B2 (en) 2011-12-16 2018-03-27 Flatfrog Laboratories Ab Tracking objects on a touch surface
WO2013089622A2 (en) 2011-12-16 2013-06-20 Flatfrog Laboratories Ab Tracking objects on a touch surface
CN104081323B (zh) 2011-12-16 2016-06-22 平蛙实验室股份公司 跟踪触摸表面上的对象
US9711752B2 (en) * 2011-12-19 2017-07-18 Lg Electronics Inc. Display apparatus
JP5296185B2 (ja) 2011-12-21 2013-09-25 シャープ株式会社 タッチセンサシステム
EP2795437A4 (en) 2011-12-22 2015-07-15 Flatfrog Lab Ab TOUCH DETERMINATION WITH INTERACTION COMPENSATION
US20130181953A1 (en) 2012-01-13 2013-07-18 Microsoft Corporation Stylus computing environment
US9250794B2 (en) 2012-01-23 2016-02-02 Victor Manuel SUAREZ ROVERE Method and apparatus for time-varying tomographic touch imaging and interactive system using same
WO2013115710A2 (en) 2012-01-31 2013-08-08 Flatfrog Laboratories Ab Performance monitoring and correction in a touch-sensitive apparatus
WO2013126005A2 (en) 2012-02-21 2013-08-29 Flatfrog Laboratories Ab Touch determination with improved detection of weak interactions
US8712233B2 (en) * 2012-02-24 2014-04-29 Apple Inc. Electronic device assemblies
US20130222344A1 (en) 2012-02-26 2013-08-29 Cheng Uei Precision Industry Co., Ltd. Optical touch module
TWI439907B (zh) 2012-02-29 2014-06-01 Pixart Imaging Inc 光學觸控裝置及其偵測方法
JP5973849B2 (ja) * 2012-03-08 2016-08-23 キヤノン株式会社 座標入力装置および座標入力装置に用いられるセンサバー
TW201351263A (zh) 2012-03-09 2013-12-16 Flatfrog Lab Ab 用於觸控判定程序的有效斷層處理
TW201403493A (zh) 2012-03-09 2014-01-16 Flatfrog Lab Ab 用於觸控判定程序的有效斷層處理
SG193603A1 (en) * 2012-03-11 2013-10-30 Neonode Inc Optical touch screen using total internal reflection
US20130241887A1 (en) 2012-03-14 2013-09-19 Texas Instruments Incorporated Detecting and Tracking Touch on an Illuminated Surface
TWI461992B (zh) * 2012-03-19 2014-11-21 Wistron Corp 應用不可見光觸控螢幕的電子裝置
TWI534685B (zh) 2012-03-28 2016-05-21 友達光電股份有限公司 觸控式顯示裝置
US8928590B1 (en) 2012-04-03 2015-01-06 Edge 3 Technologies, Inc. Gesture keyboard method and apparatus
US9448066B2 (en) 2012-04-17 2016-09-20 Massachusetts Institute Of Technology Methods and apparatus for jammable HCI interfaces
US9904457B2 (en) 2012-04-25 2018-02-27 Nokia Technologies Oy Causing display of a three dimensional graphical user interface with dynamic selectability of items
CN102662534A (zh) 2012-04-27 2012-09-12 深圳市天时通科技有限公司 一种触控显示设备
EP2845080A4 (en) 2012-05-02 2015-12-16 Flatfrog Lab Ab OBJECT DETECTION IN TOUCH SYSTEMS
WO2013165305A2 (en) 2012-05-02 2013-11-07 Flatfrog Laboratories Ab Object detection in touch systems
JP5943699B2 (ja) 2012-05-11 2016-07-05 スタンレー電気株式会社 光学式タッチパネル
KR101319543B1 (ko) * 2012-05-17 2013-10-21 삼성디스플레이 주식회사 곡면 디스플레이 장치 및 이를 포함하는 멀티 디스플레이 장치
US10168835B2 (en) 2012-05-23 2019-01-01 Flatfrog Laboratories Ab Spatial resolution in touch displays
EP2852878A4 (en) 2012-05-23 2016-02-17 Flatfrog Lab Ab IMPROVED SPATIAL RESOLUTION TOUCH APPARATUS
EP2852880B1 (en) 2012-05-23 2019-08-14 FlatFrog Laboratories AB Touch-sensitive apparatus with improved spatial resolution
US9678602B2 (en) 2012-05-23 2017-06-13 Flatfrog Laboratories Ab Touch-sensitive apparatus with improved spatial resolution
US9952719B2 (en) * 2012-05-24 2018-04-24 Corning Incorporated Waveguide-based touch system employing interference effects
JP5656922B2 (ja) * 2012-06-14 2015-01-21 日本写真印刷株式会社 タッチパネルの製造方法及び導電電極付フィルム
US20130342493A1 (en) * 2012-06-20 2013-12-26 Microsoft Corporation Touch Detection on a Compound Curve Surface
WO2013191638A1 (en) * 2012-06-21 2013-12-27 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems using diffusively reflecting element
US9524060B2 (en) 2012-07-13 2016-12-20 Rapt Ip Limited Low power operation of an optical touch-sensitive device for detecting multitouch events
US9405382B2 (en) 2012-07-24 2016-08-02 Rapt Ip Limited Augmented optical waveguide for use in an optical touch sensitive device
US9857916B2 (en) 2012-07-24 2018-01-02 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems using diffusively transmitting element
US9886116B2 (en) 2012-07-26 2018-02-06 Apple Inc. Gesture and touch input detection through force sensing
US20140036203A1 (en) 2012-07-31 2014-02-06 Apple Inc. Light mixture for a display utilizing quantum dots
US9317146B1 (en) 2012-08-23 2016-04-19 Rockwell Collins, Inc. Haptic touch feedback displays having double bezel design
US20140063853A1 (en) 2012-08-29 2014-03-06 Flex Lighting Ii, Llc Film-based lightguide including a wrapped stack of input couplers and light emitting device including the same
JP2014052432A (ja) * 2012-09-05 2014-03-20 Dexerials Corp 防汚体、表示装置、入力装置および電子機器
EP2706443B1 (en) 2012-09-11 2017-12-27 FlatFrog Laboratories AB Touch force estimation in a projection-type touch-sensing apparatus based on frustrated total internal reflection
CN202771401U (zh) 2012-09-18 2013-03-06 北京汇冠新技术股份有限公司 红外触摸屏
US9891759B2 (en) 2012-09-28 2018-02-13 Apple Inc. Frustrated total internal reflection and capacitive sensing
CN202887145U (zh) 2012-09-29 2013-04-17 杭州华银教育多媒体科技股份有限公司 新型触摸屏框架
US20140210770A1 (en) 2012-10-04 2014-07-31 Corning Incorporated Pressure sensing touch systems and methods
US9557846B2 (en) 2012-10-04 2017-01-31 Corning Incorporated Pressure-sensing touch system utilizing optical and capacitive systems
US9229576B2 (en) 2012-10-09 2016-01-05 Stmicroelectronics Asia Pacific Pte Ltd Apparatus and method for preventing false touches in touch screen systems
CN203224848U (zh) 2012-10-11 2013-10-02 华映视讯（吴江）有限公司 一种触控显示模块
US9741184B2 (en) * 2012-10-14 2017-08-22 Neonode Inc. Door handle with optical proximity sensors
US10324565B2 (en) * 2013-05-30 2019-06-18 Neonode Inc. Optical proximity sensor
US10282034B2 (en) * 2012-10-14 2019-05-07 Neonode Inc. Touch sensitive curved and flexible displays
US9164625B2 (en) * 2012-10-14 2015-10-20 Neonode Inc. Proximity sensor for determining two-dimensional coordinates of a proximal object
US9921661B2 (en) * 2012-10-14 2018-03-20 Neonode Inc. Optical proximity sensor and associated user interface
US9207800B1 (en) * 2014-09-23 2015-12-08 Neonode Inc. Integrated light guide and touch screen frame and multi-touch determination method
US8694791B1 (en) 2012-10-15 2014-04-08 Google Inc. Transitioning between access states of a computing device
EP2912650B1 (en) * 2012-10-25 2018-12-05 LG Electronics Inc. Display device
US20140139467A1 (en) 2012-11-21 2014-05-22 Princeton Optronics Inc. VCSEL Sourced Touch Screen Sensor Systems
WO2014083437A2 (en) * 2012-11-30 2014-06-05 Julien Piot Optical touch tomography
WO2014086084A1 (zh) 2012-12-05 2014-06-12 成都吉锐触摸技术股份有限公司 红外触摸屏
US20140160762A1 (en) 2012-12-07 2014-06-12 GE Lighting Solutions, LLC Diffuser element and lighting device comprised thereof
WO2014098743A1 (en) * 2012-12-17 2014-06-26 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
US20150331545A1 (en) 2012-12-17 2015-11-19 FlatFrog Laboraties AB Laminated optical element for touch-sensing systems
WO2014098742A1 (en) 2012-12-17 2014-06-26 Flatfrog Laboratories Ab Edge-coupled touch-sensitive apparatus
WO2014098740A1 (en) * 2012-12-17 2014-06-26 Flatfrog Laboratories Ab Optical coupling of light into touch-sensing systems
US10365768B2 (en) * 2012-12-20 2019-07-30 Flatfrog Laboratories Ab TIR-based optical touch systems of projection-type
US20150332655A1 (en) 2012-12-27 2015-11-19 Flatfrog Laboratories Ab Method and apparatus for detecting visible ambient light
WO2014104968A1 (en) 2012-12-27 2014-07-03 Flatfrog Laboratories Ab A touch-sensing apparatus and a method for enabling control of a touch-sensing apparatus by an external device
US9223442B2 (en) 2013-01-10 2015-12-29 Samsung Display Co., Ltd. Proximity and touch sensing surface for integration with a display
WO2014112913A1 (en) 2013-01-16 2014-07-24 Flatfrog Laboratories Ab Touch-sensing display panel
US9760227B2 (en) 2013-01-30 2017-09-12 Fujian Kechuang Photoelectric Co., Ltd. OGS captive touch panel and method for manufacturing same
TWI489351B (zh) * 2013-02-08 2015-06-21 Pixart Imaging Inc 光學透鏡、攝像裝置以及光學觸控系統
KR20140101166A (ko) * 2013-02-08 2014-08-19 엘지전자 주식회사 디스플레이 장치
US9910527B2 (en) 2013-02-15 2018-03-06 Flatfrog Laboratories Ab Interpretation of pressure based gesture
US20140237422A1 (en) 2013-02-15 2014-08-21 Flatfrog Laboratories Ab Interpretation of pressure based gesture
US20140237408A1 (en) 2013-02-15 2014-08-21 Flatfrog Laboratories Ab Interpretation of pressure based gesture
US20140237401A1 (en) 2013-02-15 2014-08-21 Flatfrog Laboratories Ab Interpretation of a gesture on a touch sensing device
US9187365B2 (en) 2013-02-25 2015-11-17 Corning Incorporated Methods for measuring the asymmetry of a glass-sheet manufacturing process
CN103123556A (zh) 2013-03-01 2013-05-29 深圳市天时通科技有限公司 投影式触控电子白板及其边框结构
CN203189466U (zh) 2013-03-10 2013-09-11 常州市龙春针织机械科技有限公司 轴向锁紧装置
US9785259B2 (en) 2013-03-11 2017-10-10 Barnes & Noble College Booksellers, Llc Stylus-based slider functionality for UI control of computing device
KR102052977B1 (ko) 2013-03-11 2019-12-06 삼성전자 주식회사 다중 입력 제어 방법 및 시스템과 이를 지원하는 전자 장치
KR20140114913A (ko) 2013-03-14 2014-09-30 삼성전자주식회사 사용자 기기의 센서 운용 방법 및 장치
US9158411B2 (en) 2013-07-12 2015-10-13 Tactual Labs Co. Fast multi-touch post processing
EP3591505B1 (en) 2013-04-07 2023-12-27 Guangzhou Shirui Electronics Co., Ltd. All-in-one machine for realizing quick touch in all channels thereof
WO2014168567A1 (en) 2013-04-11 2014-10-16 Flatfrog Laboratories Ab Tomographic processing for touch detection
US20160050746A1 (en) 2013-04-11 2016-02-18 Flatfrog Laboratories Ab Printed Circuit Assembly And A Touch Sensitive System Comprising The Assembly
US20160070416A1 (en) 2013-04-11 2016-03-10 Flatfrog Laboratories Ab A Coupling Arrangement, A Panel and a Touch Sensitive System
US10187520B2 (en) 2013-04-24 2019-01-22 Samsung Electronics Co., Ltd. Terminal device and content displaying method thereof, server and controlling method thereof
JP5872738B2 (ja) 2013-05-21 2016-03-01 シャープ株式会社 タッチパネルシステム及び電子機器
CN105283744B (zh) 2013-06-05 2018-05-18 Ev 集团 E·索尔纳有限责任公司 用以确定压力地图的测量装置及方法
KR102097541B1 (ko) * 2013-06-17 2020-04-07 삼성전자주식회사 디스플레이 장치
US9256290B2 (en) 2013-07-01 2016-02-09 Blackberry Limited Gesture detection using ambient light sensors
CN203386188U (zh) 2013-07-02 2014-01-08 广州视睿电子科技有限公司 红外触摸屏的边框结构
KR102091518B1 (ko) * 2013-07-02 2020-04-14 엘지전자 주식회사 영상표시장치
TW201502607A (zh) 2013-07-04 2015-01-16 Era Optoelectronics Inc 使光線被導入導光板進行內全反射的結構
WO2015005847A1 (en) 2013-07-12 2015-01-15 Flatfrog Laboratories Ab Partial detect mode
CN203453994U (zh) 2013-07-16 2014-02-26 山东共达电声股份有限公司 一种实现光学触控屏光路的导光装置及光学触控屏
WO2015009317A1 (en) 2013-07-19 2015-01-22 Hewlett-Packard Development Company, Lp Light guide panel including diffraction gratings
KR101915733B1 (ko) 2013-08-02 2018-11-07 삼성디스플레이 주식회사 곡면표시장치
US9366565B2 (en) 2013-08-26 2016-06-14 Flatfrog Laboratories Ab Light out-coupling arrangement and a touch sensitive system comprising the out-coupling arrangement
US10019116B2 (en) * 2013-08-30 2018-07-10 Panasonic Intellectual Property Management Co., Ltd. Display device with adhesive layer and resin layer and manufacturing method therefor
KR20150026044A (ko) 2013-08-30 2015-03-11 엘지디스플레이 주식회사 광학 시트, 이를 포함하는 백라이트 유닛 및 표시장치
JP5848736B2 (ja) * 2013-09-06 2016-01-27 デクセリアルズ株式会社 静電容量型タッチパネル
CN105975126A (zh) * 2013-09-29 2016-09-28 宸鸿科技(厦门)有限公司 触控面板及其制作方法
CN104626057B (zh) 2013-11-06 2016-06-01 纬创资通股份有限公司 用于触控显示装置组装的辅助工具及使用方法
JP2015095104A (ja) 2013-11-12 2015-05-18 シャープ株式会社 タッチパネル装置
EP3129858A4 (en) 2013-11-22 2018-01-10 FlatFrog Laboratories AB A touch sensitive apparatus with improved spatial resolution
US9983626B2 (en) * 2013-11-27 2018-05-29 Guangzhou Shirui Electronics Co, Ltd. All-in-one smart tablet PC and the assembly method thereof
KR102315659B1 (ko) * 2013-11-27 2021-10-20 가부시키가이샤 한도오따이 에네루기 켄큐쇼 표시 장치
JP2015106045A (ja) * 2013-11-29 2015-06-08 株式会社ジャパンディスプレイ 平面表示装置及びその製造方法
GB2521669A (en) * 2013-12-30 2015-07-01 Nokia Technologies Oy An apparatus for a touch sensor structure
KR20150080298A (ko) * 2013-12-31 2015-07-09 현대자동차주식회사 곡면 디스플레이의 터치 인식 장치
CN203786707U (zh) 2013-12-31 2014-08-20 深圳市天时通科技有限公司 前拆式电子白板的边框结构
CN203720812U (zh) 2014-01-10 2014-07-16 陈允华 一种新型红外触摸屏
TWI528226B (zh) 2014-01-15 2016-04-01 緯創資通股份有限公司 影像式觸控裝置及其控制方法
WO2015108478A2 (en) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Oled display panel
WO2015108480A1 (en) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Improvements in tir-based optical touch systems of projection-type
WO2015108477A1 (en) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Touch-sensing quantum dot lcd panel
US10146376B2 (en) 2014-01-16 2018-12-04 Flatfrog Laboratories Ab Light coupling in TIR-based optical touch systems
JP6326895B2 (ja) * 2014-01-21 2018-05-23 セイコーエプソン株式会社 位置検出装置、位置検出システム、及び、位置検出装置の制御方法
KR102145191B1 (ko) * 2014-01-24 2020-08-19 엘지전자 주식회사 이동 단말기
CN203786708U (zh) 2014-01-29 2014-08-20 广州视睿电子科技有限公司 拆装式红外触摸装置及红外触摸屏
JP6276867B2 (ja) 2014-02-12 2018-02-07 アップル インコーポレイテッド シートセンサ及び容量性アレイを採用する力判定
JP6276063B2 (ja) 2014-02-25 2018-02-07 シャープ株式会社 座標入力装置および画像表示装置
WO2015133346A1 (ja) * 2014-03-03 2015-09-11 日本電気硝子株式会社 アンチグレア膜付ガラス曲板の製造方法
CN203825586U (zh) 2014-03-04 2014-09-10 深圳市天时通科技有限公司 显示器边框结构
US9363342B2 (en) 2014-03-05 2016-06-07 Lg Electronics Inc. Mobile terminal and arrangement to generate a bending force on a display
US9298284B2 (en) 2014-03-11 2016-03-29 Qualcomm Incorporated System and method for optically-based active stylus input recognition
KR101521940B1 (ko) 2014-03-17 2015-05-20 엘지전자 주식회사 이동 단말기
US20150271481A1 (en) 2014-03-21 2015-09-24 Christie Digital Systems Usa, Inc. System for forming stereoscopic images
CN104951116B (zh) * 2014-03-31 2018-08-31 宸盛光电有限公司 触控装置及其制造方法
US20150286698A1 (en) 2014-04-07 2015-10-08 Microsoft Corporation Reactive digital personal assistant
JP5792348B1 (ja) 2014-04-16 2015-10-07 シャープ株式会社 位置入力装置およびタッチパネル
US9582117B2 (en) * 2014-04-28 2017-02-28 Qualcomm Incorporated Pressure, rotation and stylus functionality for interactive display screens
KR20150125374A (ko) * 2014-04-30 2015-11-09 엘지전자 주식회사 이동 단말기
US9552473B2 (en) 2014-05-14 2017-01-24 Microsoft Technology Licensing, Llc Claiming data from a virtual whiteboard
CN105094456A (zh) 2014-05-21 2015-11-25 中强光电股份有限公司 光学式触控装置及其校正方法
US9864470B2 (en) 2014-05-30 2018-01-09 Flatfrog Laboratories Ab Enhanced interaction touch system
US10867149B2 (en) 2014-06-12 2020-12-15 Verizon Media Inc. User identification through an external device on a per touch basis on touch sensitive devices
WO2015199602A1 (en) * 2014-06-27 2015-12-30 Flatfrog Laboratories Ab Detection of surface contamination
KR102351666B1 (ko) * 2014-07-14 2022-01-14 삼성디스플레이 주식회사 터치 패널을 구비한 플랙서블 표시 장치
KR101577331B1 (ko) * 2014-07-30 2015-12-14 엘지전자 주식회사 디스플레이 장치 및 그 동작방법
CN107077257B (zh) * 2014-08-27 2020-11-03 惠普发展公司，有限责任合伙企业 使用全内反射的屏幕接触检测
US9791976B2 (en) 2014-09-02 2017-10-17 Rapt Ip Limited Instrument detection with an optical touch sensitive device
US9626020B2 (en) 2014-09-12 2017-04-18 Microsoft Corporation Handedness detection from touch input
KR102284511B1 (ko) * 2014-09-24 2021-08-03 삼성디스플레이 주식회사 표시 장치
US10338725B2 (en) 2014-09-29 2019-07-02 Microsoft Technology Licensing, Llc Wet ink predictor
CN104391611B (zh) 2014-10-09 2017-09-29 深圳市艾博德科技股份有限公司 具有高抗光性能的红外触摸设备及其触摸检测单元
CN204288179U (zh) 2014-11-20 2015-04-22 北京东方中原教育科技有限公司 一种tb红外白板边框结构及其tb红外白板结构
KR102239861B1 (ko) * 2014-11-26 2021-04-13 삼성디스플레이 주식회사 터치 센서를 포함하는 표시 장치 및 그 구동 방법
US9921685B2 (en) 2014-12-15 2018-03-20 Rapt Ip Limited Tactile effect waveguide surface for optical touch detection
US10496226B2 (en) * 2015-01-08 2019-12-03 Sharp Kabushiki Kaisha Optical sensing unit and touch panel device including the same
US11119565B2 (en) * 2015-01-19 2021-09-14 Samsung Electronics Company, Ltd. Optical detection and analysis of bone
WO2016122385A1 (en) 2015-01-28 2016-08-04 Flatfrog Laboratories Ab Dynamic touch quarantine frames
US20160216844A1 (en) 2015-01-28 2016-07-28 Flatfrog Laboratories Ab Arrangement For a Touch Sensitive Apparatus
US10318074B2 (en) 2015-01-30 2019-06-11 Flatfrog Laboratories Ab Touch-sensing OLED display with tilted emitters
EP3256936A4 (en) 2015-02-09 2018-10-17 FlatFrog Laboratories AB Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel
EP3267293B1 (en) 2015-03-02 2019-09-18 Wacom Co., Ltd. Active capacitive stylus, sensor controller, system comprising these, and method executed by these
US10401546B2 (en) 2015-03-02 2019-09-03 Flatfrog Laboratories Ab Optical component for light coupling
CN104808843B (zh) 2015-04-03 2018-03-20 业成光电（深圳）有限公司 触控面板及触控显示面板
FR3034889B1 (fr) * 2015-04-10 2017-04-28 Cn2P Sas Bracelet electronique pour l’affichage d’un contenu numerique interactif destine a etre projete sur une zone d’un bras
US11243640B2 (en) * 2015-04-21 2022-02-08 Dell Products L.P. Information handling system modular capacitive mat with extension coupling devices
US11106314B2 (en) * 2015-04-21 2021-08-31 Dell Products L.P. Continuous calibration of an information handling system projected user interface
US10139854B2 (en) * 2015-04-21 2018-11-27 Dell Products L.P. Dynamic display resolution management for an immersed information handling system environment
US9983717B2 (en) * 2015-04-21 2018-05-29 Dell Products L.P. Disambiguation of false touch inputs at an information handling system projected user interface
US10370288B2 (en) * 2015-05-05 2019-08-06 Agc Glass Europe Glass sheet capable of having controlled warping through chemical strengthening
TWM517370U (zh) 2015-07-21 2016-02-11 Tekq Technology Co Ltd 光學觸控裝置
TWI564773B (zh) * 2015-08-05 2017-01-01 緯創資通股份有限公司 光學觸控系統及其光學觸控裝置
US10860142B1 (en) * 2015-08-27 2020-12-08 Apple Inc. Light-based devices with light guide arrays
US20170075473A1 (en) * 2015-09-15 2017-03-16 Hyundai Motor Company Touch input device and method for manufacturing the same
US10203799B2 (en) * 2015-09-15 2019-02-12 Hyundai Motor Company Touch input device, vehicle comprising touch input device, and manufacturing method of touch input device
US10317200B1 (en) * 2015-09-30 2019-06-11 Apple Inc. Multi-mode sensor for surface orientation
CN205015574U (zh) 2015-10-14 2016-02-03 深圳市联合盛电子有限公司 触摸屏与液晶模组贴合治具组
CN105224138B (zh) 2015-10-22 2019-04-19 京东方科技集团股份有限公司 悬浮触控显示装置
KR102537305B1 (ko) * 2015-10-22 2023-05-30 삼성디스플레이 주식회사 터치 표시 장치 및 이의 제조 방법
CN105158956A (zh) 2015-10-30 2015-12-16 京东方科技集团股份有限公司 一种曲面液晶显示器
US10884553B2 (en) 2015-11-03 2021-01-05 Hewlett-Packard Development Company, L.P. Light guide and touch screen assembly
KR101741654B1 (ko) * 2015-11-19 2017-05-30 현대자동차주식회사 터치 입력장치, 이를 포함하는 차량, 및 그 제조방법
KR20170058742A (ko) * 2015-11-19 2017-05-29 현대자동차주식회사 터치 입력장치, 이를 포함하는 차량, 및 그 제조방법
US10001882B2 (en) 2015-12-02 2018-06-19 Rapt Ip Limited Vibrated waveguide surface for optical touch detection
TWI573546B (zh) 2016-02-01 2017-03-11 緯創資通股份有限公司 框架固定組件、框架組件及框架的安裝方法
US20190050074A1 (en) 2016-02-12 2019-02-14 Flatfrog Laboratories Ab Assembly tools for panel and touch-sensing system
CN205384833U (zh) 2016-03-06 2016-07-13 长沙环境保护职业技术学院 智能型旅游电子相框
KR101796857B1 (ko) * 2016-04-25 2017-11-10 이준구 적외선 방식의 터치스크린 장치
KR102054734B1 (ko) * 2016-07-19 2019-12-11 보에 테크놀로지 그룹 컴퍼니 리미티드 터치 기판, 이를 제조하기 위한 마스크 판, 및 이의 제조 방법
CN107908353B (zh) 2016-09-30 2020-12-18 禾瑞亚科技股份有限公司 电子系统、触控处理装置与其方法
KR20180037749A (ko) 2016-10-05 2018-04-13 에스프린팅솔루션 주식회사 디스플레이 장치
US10437391B2 (en) 2016-11-17 2019-10-08 Shenzhen GOODIX Technology Co., Ltd. Optical touch sensing for displays and other applications
EP3545392A4 (en) 2016-11-24 2020-07-29 FlatFrog Laboratories AB AUTOMATIC TACTILE SIGNAL OPTIMIZATION
KR102630571B1 (ko) 2016-11-29 2024-01-30 엘지디스플레이 주식회사 광학식 이미지 인식 센서 내장형 평판 표시장치
WO2018106172A1 (en) 2016-12-07 2018-06-14 Flatfrog Laboratories Ab Active pen true id
WO2018174786A1 (en) 2017-03-22 2018-09-27 Flatfrog Laboratories Pen differentiation for touch displays
EP3602259A4 (en) 2017-03-28 2021-01-20 FlatFrog Laboratories AB TOUCH DETECTION DEVICE AND ITS ASSEMBLY PROCESS
KR102403009B1 (ko) 2017-04-28 2022-05-30 엘지디스플레이 주식회사 홀로그래픽 광학 소자를 이용한 지문 센서 일체형 표시장치
KR102331584B1 (ko) 2017-06-08 2021-11-30 엘지전자 주식회사 디스플레이 디바이스
WO2019073300A1 (en) 2017-10-10 2019-04-18 Rapt Ip Limited THIN COUPLERS AND REFLECTORS FOR DETECTION WAVEGUIDES
CN107957812B (zh) 2017-11-15 2021-06-08 苏州佳世达电通有限公司 触控装置及触控装置辨识方法
US11169641B2 (en) 2018-01-23 2021-11-09 Beechrock Limited Compliant stylus interaction with touch sensitive surface
US11175767B2 (en) 2018-02-19 2021-11-16 Beechrock Limited Unwanted touch management in touch-sensitive devices
US11036338B2 (en) 2018-04-20 2021-06-15 Beechrock Limited Touch object discrimination by characterizing and classifying touch events
US10983611B2 (en) 2018-06-06 2021-04-20 Beechrock Limited Stylus with a control
US11003284B2 (en) 2018-06-12 2021-05-11 Beechrock Limited Touch sensitive device with a camera
US11016600B2 (en) 2018-07-06 2021-05-25 Beechrock Limited Latency reduction in touch sensitive systems
TWI734024B (zh) 2018-08-28 2021-07-21 財團法人工業技術研究院 指向判斷系統以及指向判斷方法
KR102469722B1 (ko) 2018-09-21 2022-11-22 삼성전자주식회사 디스플레이 장치 및 그 제어 방법
WO2020080746A1 (en) 2018-10-17 2020-04-23 Samsung Electronics Co., Ltd. Display apparatus and control method thereof
US11054935B2 (en) 2018-11-19 2021-07-06 Beechrock Limited Stylus with contact sensor
KR102625830B1 (ko) 2018-11-27 2024-01-16 삼성전자주식회사 디스플레이장치, 그 제어방법 및 기록매체
US10649585B1 (en) 2019-01-08 2020-05-12 Nxp B.V. Electric field sensor
TWI713987B (zh) 2019-02-01 2020-12-21 緯創資通股份有限公司 光學觸控面板及其壓力測量方法
US20200310621A1 (en) 2019-03-29 2020-10-01 Rapt Ip Limited Unwanted touch management in touch-sensitive devices
US20200341587A1 (en) 2019-04-24 2020-10-29 Rapt Ip Limited Thin Interactive Display
WO2020225605A1 (en) 2019-05-03 2020-11-12 Rapt Ip Limited Waveguide-based image capture
US20200387237A1 (en) 2019-06-10 2020-12-10 Rapt Ip Limited Instrument with Passive Tip
US11231814B1 (en) * 2019-10-31 2022-01-25 Apple Inc. Electronic devices with curved display surfaces

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6031524A (en) * 1995-06-07 2000-02-29 Intermec Ip Corp. Hand-held portable data terminal having removably interchangeable, washable, user-replaceable components with liquid-impervious seal
US20100103133A1 (en) * 2008-10-24 2010-04-29 Samsung Electronics Co., Ltd. Input device for foldable display device and input method thereof
US20120062492A1 (en) * 2009-04-17 2012-03-15 Sharp Kabushiki Kaisha Display device
US20160026297A1 (en) * 2013-03-18 2016-01-28 Sony Corporation Sensor device, input device, and electronic apparatus
US20160209886A1 (en) * 2013-08-30 2016-07-21 Samsung Electronics Co., Ltd. Electronic device having curved bottom and operation method thereof
US20160295711A1 (en) * 2014-01-24 2016-10-06 Lg Electronics Inc. Display device
US20150373864A1 (en) * 2014-06-19 2015-12-24 Samsung Display Co., Ltd. Display apparatus and method of manufacturing same
US20160255713A1 (en) * 2015-02-26 2016-09-01 Samsung Display Co., Ltd. Flexible display and manufacturing method thereof
US10282035B2 (en) * 2016-12-07 2019-05-07 Flatfrog Laboratories Ab Touch device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11914819B2 (en) * 2016-12-07 2024-02-27 Flatfrog Laboratories Touch device
WO2020236071A1 (en) * 2019-05-22 2020-11-26 Flatfrog Laboratories Ab Touch sensing apparatus

Also Published As

Publication number Publication date
US10775935B2 (en) 2020-09-15
US11579731B2 (en) 2023-02-14
US20200110508A1 (en) 2020-04-09
JP2022088506A (ja) 2022-06-14
LT3667475T (lt) 2022-11-10
EP3667475A1 (en) 2020-06-17
PL3667475T3 (pl) 2022-11-21
KR102495467B1 (ko) 2023-02-06
US20200064966A1 (en) 2020-02-27
CN116755580A (zh) 2023-09-15
PT3667475T (pt) 2022-10-17
EP3667475B1 (en) 2022-09-07
CN116991265A (zh) 2023-11-03
US10282035B2 (en) 2019-05-07
US20190079637A1 (en) 2019-03-14
JP2020512607A (ja) 2020-04-23
WO2018106176A1 (en) 2018-06-14
HUE059960T2 (hu) 2023-01-28
ES2928650T3 (es) 2022-11-21
US11907480B2 (en) 2024-02-20
KR20210155815A (ko) 2021-12-23
DK3667475T3 (da) 2022-10-17
JP7165454B2 (ja) 2022-11-04
EP3535640A1 (en) 2019-09-11
KR102629629B1 (ko) 2024-01-29
KR20190092411A (ko) 2019-08-07
JP2023017776A (ja) 2023-02-07
US11868568B2 (en) 2024-01-09
US11914819B2 (en) 2024-02-27
KR20230021176A (ko) 2023-02-13
EP4152132A1 (en) 2023-03-22
KR102344055B1 (ko) 2021-12-28
KR20240012622A (ko) 2024-01-29
US20230341976A1 (en) 2023-10-26
US20210173514A1 (en) 2021-06-10
EP3535640B1 (en) 2022-09-07
CN110114737A (zh) 2019-08-09
US20230315234A1 (en) 2023-10-05
EP3535640A4 (en) 2020-06-10
US11281335B2 (en) 2022-03-22
US20230168774A1 (en) 2023-06-01

Similar Documents

Publication Publication Date Title
US11907480B2 (en) Touch device
US9857917B2 (en) Optical coupling of light into touch-sensing systems
CN104062803B (zh) 显示装置的背光单元
TW201235911A (en) An optical path for infrared touch panel
WO2013191638A1 (en) Optical coupling in touch-sensing systems using diffusively reflecting element
CN208506715U (zh) 触摸感测装置和用于保持光学触摸敏感系统板件的组件
CN211293334U (zh) 导光板及光源模块
WO2020236071A1 (en) Touch sensing apparatus
US20230400948A1 (en) Improved touch-sensing apparatus
US20180143459A1 (en) Reflective display apparatus
JP2003091356A (ja) 座標入力装置
JP2020194083A (ja) 投射装置

Legal Events

Date Code Title Description
STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION