US20140240282A1 - Method for driving touch panel - Google Patents

Method for driving touch panel Download PDF

Info

Publication number
US20140240282A1
US20140240282A1 US14/189,592 US201414189592A US2014240282A1 US 20140240282 A1 US20140240282 A1 US 20140240282A1 US 201414189592 A US201414189592 A US 201414189592A US 2014240282 A1 US2014240282 A1 US 2014240282A1
Authority
US
United States
Prior art keywords
driving
signal
time period
voltage level
lines
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
US14/189,592
Other languages
English (en)
Inventor
Tae Ho HWANG
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.)
DB HiTek Co Ltd
Original Assignee
Dongbu HitekCo Ltd
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
Application filed by Dongbu HitekCo Ltd filed Critical Dongbu HitekCo Ltd
Assigned to DONGBU HITEK CO., LTD. reassignment DONGBU HITEK CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HWANG, TAE HO
Publication of US20140240282A1 publication Critical patent/US20140240282A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/62—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181—Encapsulation

Definitions

  • Embodiments of the present disclosure relate to a method for driving a touch panel.
  • measurement of the capacitance of each sensing node in a touch panel is achieved by applying a pulse sequence at a specific frequency through a driving line by a driving unit, and measuring a signal received through a sensing line by a sensing unit.
  • the frequency of the pulse sequence may be influenced by various environmental noise such as charger noise and fluorescent lamp noise.
  • various environmental noise such as charger noise and fluorescent lamp noise.
  • methods for suppressing influence of such environmental noise may be applied.
  • an appropriate signal processing scheme may be applied to the sensing unit in order to extract a signal component corresponding to the measured capacitance.
  • Embodiments of the present disclosure provide a method for driving a touch panel capable of reducing a harmonic component included in a driving signal, and achieving an enhancement in sensitivity and jitter immunity.
  • a method for driving a touch panel including driving lines, sensing lines, and node capacitors formed between neighboring or overlapping ones of the driving lines and the sensing lines includes selecting two or more of the driving lines, and simultaneously driving the selected driving lines by driving signals, wherein each of the driving signals has three or more voltages of different levels.
  • Each driving signal may be a periodic signal, and may have three or more voltages of different levels in every period thereof.
  • Each driving signal may include a first signal portion or time period having a first voltage level, a second signal portion or time period having a second voltage level, and a third signal portion or time period having a third voltage level.
  • the first voltage level, the second voltage level, and the third voltage level may be different.
  • the first voltage level may be higher than the second voltage level.
  • the second voltage level may be higher than the third voltage level.
  • the first voltage level may be a positive (+) voltage.
  • the second voltage level may be 0 or a ground potential, and the third voltage level may be a negative ( ⁇ ) voltage.
  • the first signal portion or time period and the third signal portion or time period may alternate.
  • the second signal portion or time period may be between the first signal portion or time period and the third signal portion or time period.
  • Each driving signal may have a duty ratio second within a range of more than 0.25, but less than 1.
  • the duty ratio of each driving signal may be a ratio or percentage of a sum of a length of the first signal portion or time period and a length of the third signal portion or time period in each period of the driving signal.
  • the different portions of the driving signal may have the same phase.
  • the driving signal applied to at least one of the selected driving lines may have a phase different from other driving signals applied to other (e.g., the remaining) driving lines.
  • the first signal portion or time period and the third signal portion or time period of each driving signal may have equal lengths within one period of the driving signal.
  • the second signal portion or time period may be before the first signal portion or time period and/or after the third signal portion or time period.
  • a method for driving a touch panel including driving lines, sensing lines, and node capacitors between overlapping ones of the driving lines and the sensing lines includes selecting two or more of the driving lines, and simultaneously driving the selected driving lines by driving signals, wherein each driving signal is a periodic signal and has a period comprising a first portion or time period in which the driving signal has a first voltage level, a second portion or time period in which the driving signal has a second voltage level lower than the first voltage level, and a third portion or time period in which the driving signal has a third voltage level lower than the second voltage level.
  • Each driving signal may have a duty ratio within a range of more than 0.25, but less than 1.
  • the duty ratio of each driving signal may be a ratio or percentage of a sum of a length of the first portion or time period and a length of the third portion or time period in each period of the driving signal.
  • the second portion or time period of the driving signal may be present between the first portion or time period and the third portion or time period.
  • the first portion or time period and the third portion or time period may be equal.
  • the length of the second portion or time period may be shorter than the first portion or time period and/or the third portion or time period.
  • the different portions or time periods of an individual driving signal may have the same phase.
  • the driving signal applied to at least one of the selected driving lines may have a phase different from other driving signals applied to other (e.g., the remaining) driving lines.
  • a method for driving a touch panel including driving lines, sensing lines, and node capacitors between overlapping ones of the driving lines and the sensing lines includes selecting two or more of the driving lines, simultaneously driving the selected driving lines by driving signals having two or more voltages of different levels, and receiving an overlapped or combined signal from the simultaneously-driven driving signals, wherein the overlapped or combined signal is a periodic signal having three or more voltages of different levels.
  • the overlapped or combined signal may have a period comprising, in sequence, a first portion or time period in which the overlapped or combined signal has a first voltage level, a second portion or time period in which the overlapped or combined signal has a second voltage level lower than the first voltage level, a third portion or time period in which the overlapped or combined signal has a third voltage level lower than the second voltage level, and a fourth portion or time period in which the overlapped or combined signal has the second voltage level.
  • Embodiments of the present disclosure may reduce a harmonic component included in a driving signal while achieving an enhancement in sensitivity and jitter immunity.
  • FIG. 1 is a diagram illustrating an exemplary configuration of a touchscreen device according to one or more embodiments of the present disclosure
  • FIG. 2 is a waveform diagram illustrating an example of a driving signal applied to two or more driving lines illustrated in FIG. 1 ;
  • FIG. 3 is a circuit diagram illustrating an embodiment of a sensing circuit included in the sensing unit illustrated in FIG. 1 ;
  • FIG. 4 is a waveform and/or diagram illustrating examples of a driving signal having two voltages of different levels and a driving signal having three voltages of different levels in accordance with one or more embodiments of the present disclosure
  • FIG. 5 is a waveform illustrating results of a simulation showing a harmonic component of the driving signal illustrated in FIG. 4 as having two voltages of different levels;
  • FIG. 6 is a waveform illustrating results of a simulation showing a harmonic component of the driving signal according to the embodiment(s) of FIG. 4 ;
  • FIG. 7 is a waveform diagram illustrating a signal received by the sensing unit from each sensing line when driving signals having the same phase are simultaneously applied to two or more driving lines corresponding to the sensing line, respectively;
  • FIG. 8 is a waveform diagram illustrating an example in which at least one driving signal simultaneously applied to driving lines has a phase different from those of the remaining driving signals;
  • FIG. 9 is a method for simultaneously driving two driving lines in accordance with one or more embodiments of the present disclosure.
  • FIGS. 10A to 10C are waveform diagrams illustrating examples of two exemplary driving signals illustrated in FIG. 9 ;
  • FIG. 11 is a waveform diagram illustrating a method for simultaneously driving two driving lines in accordance with one or more additional embodiments.
  • FIG. 1 is a diagram illustrating a configuration of a touchscreen device 100 according to one or more embodiments of the present disclosure.
  • the touchscreen device 100 includes a touch panel 10 , a driving unit 20 , a sensing unit 30 , and a control unit 40 .
  • the touch panel 10 provides a plurality of sensing nodes P11 to Pnm (n and m being natural numbers greater than 1) having substantially independent functions, but different positions.
  • the sensing nodes P11 to Pnm may be described as coordinates, sensing points, nodes, or a sensing node array.
  • the touch panel 10 may include a plurality of driving lines X1 to Xn (n being a natural number greater than 1), a plurality of sensing lines Y1 to Ym (m being a natural number greater than 1), and node capacitors C11 to Cnm (n and m being natural numbers greater than 1) formed between overlapping driving lines X1 to Xn and sensing lines Y1 to Ym.
  • the driving lines X1 to Xn may be described as driving signal lines or driving electrodes.
  • the sensing lines Y1 to Ym may be described as sensing signal lines or sensing electrodes.
  • driving lines and sensing lines are illustrated in FIG. 1 as intersecting each other, embodiments of the present disclosure are not limited to such an arrangement.
  • the driving lines and sensing lines may be embodied such that they do not intersect each other.
  • Each sensing node (for example, the sensing node P11) may be defined by the first node capacitor (for example, C11) between the first driving line (for example, X1) and the first sensing line (for example, Y1).
  • each driving line Xi (i being a natural number satisfying 0 ⁇ i ⁇ n) and each sensing line Yj (j being a natural number satisfying 0 ⁇ j ⁇ m) may be isolated from each other through insulation, and one node capacitor Cij may be formed between the driving line Xi and the sensing line Yj.
  • the touch panel 10 may include an electrode pattern layer (not shown) including sensing electrodes and driving electrodes spaced apart from each other, a substrate (not shown) at a front side of the electrode pattern layer, and an insulating layer (not shown) at a back side of the electrode pattern layer.
  • the electrode pattern layer may have various layouts in accordance with a designing method applied thereto.
  • the electrode pattern layer may include least one transparent conductive material, for example, indium tin oxide (ITO), tin oxide (TO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), indium aluminum zinc oxide (IAZO), indium gallium zinc oxide (IGZO), indium gallium tin oxide (IGTO), aluminum zinc oxide (AZO), antimony tin oxide (ATO), gallium zinc oxide (GZO), carbon nanotubes, a conductive polymer, silver, and transparent copper ink.
  • transparent conductive material for example, indium tin oxide (ITO), tin oxide (TO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), indium aluminum zinc oxide (IAZO), indium gallium zinc oxide (IGZO), indium gallium tin oxide (IGTO), aluminum zinc oxide (AZO), antimony tin oxide (ATO), gallium zinc oxide (GZO), carbon nanotubes, a conductive polymer, silver, and transparent copper
  • the electrode pattern layer may be on or over one or more layers of glass or plastic, to form a sensing node array including sensing nodes P11 to Pnm (n and m being natural numbers greater than 1).
  • the substrate may comprise or have the form of a dielectric film exhibiting high light transmissivity.
  • the substrate may include at least one of glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), a polyimide (PI), or a (meth)acrylate polymer.
  • the insulating layer may be a transparent insulating layer including, for example, PET.
  • a shield layer (not shown) may be beneath the insulating layer in order to eliminate electromagnetic interference (EMI) and noise entering the electrode pattern layer.
  • EMI electromagnetic interference
  • the touch panel 10 may be merged with a layer for display or may share a driving or sensing path with the layer in accordance with an appropriate panel designing method.
  • a two-dimensional sensing node array may be configured in accordance with an appropriate method. Embodiments are also applicable to a touch sensing system comprising or constituted by a two-dimensional sensing node array.
  • the driving unit 20 is electrically connected with a plurality of driving lines X1 to Xn (n being a natural number greater than 1), to supply a driving signal to one or more of the driving lines X1 to Xn.
  • the driving unit 20 may simultaneously supply a driving signal to two or more of the driving lines X1 to Xn.
  • “simultaneously” may include not only events occurring nearly simultaneously, but also events occurring precisely simultaneously.
  • events occurring simultaneously may mean events that nearly simultaneously start, and nearly simultaneously end, and/or events having periods that at least partially overlap.
  • the driving signal applied to two or more driving lines may have three or more voltages of different levels, and may be a periodic signal.
  • the driving signal applied to two or more driving lines may have three voltages of different levels within each period.
  • FIG. 2 illustrates an example of a driving signal Vd applied to two or more of the driving lines illustrated in FIG. 1 .
  • the driving signal Vd may have a first voltage level, +Vp, a second voltage level, Vss, and a third voltage level, ⁇ Vn.
  • the first voltage level V+p, second voltage level Vss, and third voltage level ⁇ Vn may have different values, respectively.
  • the driving signal Vd may include a first signal portion or time period V1 having a first voltage level +Vp, a second signal portion or time period V2 having a second voltage level Vss, and a third signal portion or time period V3 having a third voltage level ⁇ Vn.
  • the first voltage level V+p, second voltage level Vss, and third voltage level ⁇ Vn may have different values, respectively.
  • the first voltage level +Vp may be higher than the second voltage level Vss, and the second voltage level Vss may be higher than the third voltage level ⁇ Vn (+Vp>Vss> ⁇ Vn).
  • the first voltage level +Vp may be a positive (+) voltage.
  • the second voltage level Vss may be 0 or a ground potential.
  • the third voltage level ⁇ Vn may be a negative ( ⁇ ) voltage.
  • the first signal portion or time period V1 and third signal portion or time period V3 may alternate.
  • the second signal portion or time period V2 may be between the first signal portion or time period V1 and the third signal portion or time period V3.
  • the second signal portion or time period V2 may be before the first signal portion or time period V1 and/or after the third signal portion or time period V3.
  • the first signal portion, value and/or time period V1, the second signal portion, value and/or time period V2, and the third signal portion, value and/or time period V3 may be referred to as a “first portion or time period Ta1”, a “second portion or time period Ta2”, and a “third portion or time period Ta3”, respectively.
  • each period T of the driving signal Vd may include the first portion or time period Ta1, second portion or time period Ta2, and third portion or time period Ta3.
  • the second portion or time period Ta2 may be present between the first period Ta1 and the third period Ta3.
  • the second portion or time period Ta2 present between the first portion or time period Ta1 and the third portion or time period Ta2 may be shorter than the first portion or time period Ta1 or the second portion or time period Ta2.
  • the first portion or time period Ta1 and third portion or time period Ta3 may be equal. Of course, embodiments of the present disclosure are not limited to the above-described condition. In another embodiment, the first portion or time period Ta1 and third portion or time period Ta3 may differ from each other.
  • the driving signal Vd may have a duty ratio DR more than 0.25, but less than 1 (0.25 ⁇ DR ⁇ 1). That is, the duty ratio DR of the driving signal Vd may be within a range of more than 0.25, but less than 1.
  • the duty ratio DR of the driving signal Vd is not more than 0.25, the average power of the driving signal Vd to be transmitted may be reduced by 1 ⁇ 4. In this case, touch performance may be reduced by 6 dB or more.
  • the duty ratio DR of the driving signal may be the rate of the sum of the first portion or time period Ta1 and third portion or time period Ta3 (Ta1+Ta3) within each period T of the driving signal ((Ta1+Ta3)/T), as compared to the second portion or time period Ta2.
  • Dotted line portions in FIG. 2 illustrate a driving signal VE having two voltages of different levels.
  • the driving signal VE transits from the first voltage level V+p to the third voltage level ⁇ Vn every half period T/2. At the half period time T/2, the driving signal VE may transition from Vp to Vn.
  • the driving signal Vd at a first time t1 may transition from a first value Vp.
  • the driving signal Vd at a second time t2 may transition to a value Vn.
  • the transition from Vp or to Vn of the driving signal Vd according to the illustrated embodiment(s) is less than the transition from Vp to Vn of the driving signal VE.
  • FIG. 4 illustrates examples of a driving signal having two voltages of different levels and a driving signal having three voltages of different levels in accordance with one or more embodiments of the present disclosure.
  • FIG. 5 illustrates results of a simulation illustrating a harmonic component of the driving signal of FIG. 4 having two voltages of different levels.
  • FIG. 6 illustrates results of a simulation illustrating a harmonic component of the driving signal according to embodiment(s) of the present disclosure illustrated in FIG. 4 .
  • the solid line depicts the driving signal according to embodiment(s) of the present disclosure
  • the dotted line depicts the driving signal that has two voltages of different levels.
  • the sensing unit with enhancements in sensitivity and jitter immunity of in accordance with the reduction of the harmonic component(s) in the driving signal.
  • Driving signals simultaneously applied to two or more of the driving lines may have the same phase.
  • the driving signal Vd illustrated in FIG. 2 may be simultaneously applied to two or more of the driving lines at the same phase.
  • An overlapped or combined signal Vc ( FIG. 3 ) received by the sensing unit 30 may be a signal having three voltages of different levels.
  • the “overlapped or combined signal Vc” means a signal in accordance with results of overlap, summation or combination of driving signals applied to each sensing line (for example, Yj in FIG. 3 ) and/or coupled to sensing nodes corresponding to the driving lines receiving the driving signals.
  • FIG. 7 depicts a signal received by the sensing unit via each sensing line when driving signals having the same phase are simultaneously applied to two or more driving lines corresponding to the sensing line, respectively.
  • the magnitude of the signal Vc ( FIG. 3 ) received by the corresponding sensing line Y1 may be double the magnitude of the driving signal Vd applied to each driving line, for example, X1 or X2, in accordance with a principle of overlap, summation or combination.
  • voltage variation of the overlapped or combined signal Vc received by the sensing unit 30 may be less than a first voltage variation.
  • the first voltage variation may be the voltage variation of a signal received by the sensing unit when a driving signal having two voltages of different levels and the same phase is simultaneously applied to two driving lines, for example, X1 and X2, respectively (hereinafter, referred to as a “first case”).
  • the overlapped or combined signal Vc ( FIG. 3 ) received by the sensing unit 30 may be a signal having three voltages of different levels. Furthermore, the overlapped or combined signal Vc ( FIG. 3 ) received by the sensing unit 30 may have a fourth voltage level, +2Vp, the second voltage level Vss, and a fifth voltage level, ⁇ 2Vn.
  • the phase of the driving signal applied to at least one of the selected driving lines may differ from the phases of the driving signals applied to the remaining driving lines.
  • different phases of the driving signal Vd illustrated in FIG. 2 may be simultaneously applied to two or more driving lines.
  • FIG. 8 illustrates an example in which at least one driving signal simultaneously applied to driving lines has a phase different from those of the remaining driving signals.
  • the driving signal applied to one or more of the driving lines may have a phase different from the driving signals applied to the remaining driving lines (for example, X1 and X3).
  • the driving signal applied to at least one of the driving lines may have a phase difference of 180° or a half period from the driving signals applied to the remaining driving lines.
  • the phases of the driving signals applied to the first and third driving lines X1 and X3 may be identical, while at the same time being different from that of the driving signal applied to the second driving line X2.
  • the sensing unit 30 may be electrically connected to the plural sensing lines Y1 to Ym (m being a natural number greater than 1).
  • the sensing unit 30 may sense the capacitance of a node capacitor between a driving line and a corresponding or overlapping one of the sensing lines.
  • the driving unit 20 may supply the driving signal Vd to the driving lines X1 to Xn (n being a natural number greater than 1).
  • the sensing unit 30 may include sensing circuits for sensing signals received by the sensing unit 30 via the sensing lines Y1 to Ym, respectively.
  • FIG. 3 is an embodiment of the sensing circuit 30 - j included in the sensing unit 30 illustrated in FIG. 1 .
  • the sensing unit 30 may include a plurality of sensing circuits coupled to m sensing lines Y1 to Ym (m being a natural number greater than 1).
  • the sensing circuit 30 - j may include an amplifier 31 and a capacitor 32 .
  • the amplifier 31 may be a differential amplifier having a first input terminal 201 (for example, an inverting or negative terminal) coupled to the sensing line Yj, a second input terminal 202 (for example, non-inverting or positive terminal) connected to the second voltage level Vss, and an output terminal 203 for outputting a sensing signal Vs.
  • a first input terminal 201 for example, an inverting or negative terminal
  • a second input terminal 202 for example, non-inverting or positive terminal
  • Vss for example, non-inverting or positive terminal
  • the capacitor 32 is electrically connected between the first input terminal 201 and the output terminal 203 of the amplifier 31 , to negatively feed back an output from the amplifier 31 to the first input terminal 201 .
  • the capacitor 32 may also determine a gain of the sensing signal Vs.
  • the signal Vc received by the sensing circuit 30 - j may be a signal obtained by overlapping two or more driving signals simultaneously driven through the sensing line Yj.
  • two or driving signals, which are simultaneously driven, may overlap in the sensing line Yj and, as such, an overlapped or combined signal, namely, the signal Vc, may be received by the sensing unit 30 .
  • the control unit controls operations of the driving unit 20 and sensing unit 30 .
  • control unit 40 may generate a driving control signal Sx for control of the driving unit 20 , and a sensing control signal Sy for control of the sensing unit 30 .
  • the control unit 40 controls operations of the driving unit 20 and sensing unit 30 in accordance with the driving control signal Sx and sensing control sign al Sy.
  • the control unit 40 may sense the signal Vc applied to the sensing line Yj, and may control the sensing unit 30 in accordance with the sensed results, to output the sensing signal Vs.
  • momentary peak current can be reduced through a reduction in voltage variation of the driving signal Vd. Accordingly, it is possible to eliminate glitch of the signal received by the sensing unit, and to easily realize the circuit of the sensing unit 30 .
  • FIG. 9 is a method for simultaneously driving two driving lines in accordance with one or more embodiments.
  • two driving lines selected from among a plurality of driving lines X1 to Xn can be simultaneously driven.
  • Each of the driving signals for simultaneous driving of the two selected driving lines (for example, driving signals Vd1 and Vd2 for the driving lines X1 and X2) may have voltages of different levels.
  • the overlapped or combined signal Vc received by the sensing unit 30 may have three voltages of different levels via the sensing line (for example, Y1) through adjustment of the phases and/or adjustment, combination and/or summation of voltage levels of the driving signals, each having two voltages of different levels.
  • the overlapped or combined signal Vc may be a periodic signal having a certain period T.
  • the “overlapped or combined signal Vc” generally means a signal in accordance with results of overlap, combination and/or summation of driving signals (for example, Vd1 and Vd2) applied to each sensing line (for example, Y1 in FIG. 3 ) coupled to sensing nodes (for example, C11 and C21 in FIG. 3 ) corresponding to two driving lines (for example, X1 and X2) receiving the driving signals.
  • driving signals for example, Vd1 and Vd2
  • the overlapped or combined signal Vc received by the sensing unit 30 may be a periodic signal.
  • the period T of the overlapped or combined signal Vc may be divided into first to fourth portions or time periods T1 to T4, which are sequential.
  • the signal Vc overlapped or combined for one period T may sequentially include a first section, portion or time period having a first voltage level, a second section, portion or time period having a second voltage level, a third section, portion or time period having a third voltage level, and a fourth section, portion or time period having the second voltage level.
  • the first voltage level, second voltage level, and third voltage level are different from each other.
  • the first voltage level may be highest, the third voltage level may be lowest, and the second voltage level may be between the first and third voltage levels (Va1>Va2>Va3).
  • the first voltage level may be a positive (+) voltage.
  • the second voltage level may be 0 or a ground potential.
  • the third voltage level may be a negative ( ⁇ ) voltage.
  • the overlapped or combined signal Vc received by the sensing unit 30 may include a first signal portion or time period Va1 having the first voltage level, a second signal portion or time period Va2 having the second voltage level, and a third signal portion or time period Va3 having the third voltage level.
  • the first signal portion or time period Va1 and third signal portion or time period Va3 may alternate.
  • the second signal portion or time period Va2 may be between the first signal portion or time period Va1 and the third signal portion or time period Va3.
  • the overlapped or combined signal Vc may be the first signal portion or time period Va1 during the first period T1, the second signal portion or time period Va2 during the second period T2, the third signal portion or time period Va2 during the third period T3, and the fourth signal Va4 during the fourth period T4.
  • the fourth signal Va4 during the fourth period T4 may have the same voltage and/or length as the second signal portion or time period Va2 during the second period T2.
  • the voltage of the driving signal supplied to one of the two driving lines during the first period T1 may be the first voltage level, and the voltage of the driving signal supplied to the other driving line during the first period T1 may be the second voltage level.
  • the voltages of the driving signals respectively supplied to the two driving lines during the first period T1 may be the first voltage level.
  • the voltages (for example, A1 and B1) of the driving signals Vd1 and Vd2 respectively supplied to two driving lines (for example, X1 and X2) during the first period T1 may be voltages (+, 0) or voltages (+, +), respectively.
  • the voltage of the driving signal supplied to one of the two driving lines during the second period T2 or during the fourth period T4 may be the first voltage level, and the voltage of the driving signal supplied to the other driving line during the second period T2 or during the fourth period T4 may be the third voltage level.
  • the voltages of the driving signals respectively supplied to the two driving lines during the second period T2 or during the fourth period T4 may be the second voltage level.
  • the voltages (for example, A2 and B2) of the driving signals Vd1 and Vd2 respectively supplied to two driving lines (for example, X1 and X2) during the second period T2 may have voltages (0, 0) or voltages (+, ⁇ ), respectively.
  • the voltages (for example, A4 and B4) of the driving signals Vd1 and Vd2 respectively supplied to two driving lines (for example, X1 and X2) during the fourth period T4 may have voltages (0, 0) or voltages (+, ⁇ ) or ( ⁇ , +), respectively.
  • the voltage of the driving signal supplied to one of the two driving lines during the third period T3 may be the third voltage level, and the voltage of the driving signal supplied to the other driving line during the third period T3 may be the second voltage level.
  • the voltages of the driving signals respectively supplied to the two driving lines during the third period T3 may be the third voltage level.
  • the voltages (for example, A3 and B3) of the driving signals Vd1 and Vd2 respectively supplied to two driving lines (for example, X1 and X2) during the third period T3 may have voltages ( ⁇ , ⁇ ) or voltages ( ⁇ , 0), respectively.
  • FIG. 9 illustrates an example in which two driving lines are simultaneously driven, embodiments of the present disclosure are not limited thereto.
  • the overlapped or combined signal Vc received by the sensing unit 30 during each of the periods T1 to T4 may have voltages as illustrated in FIG. 9 , through adjustment of the phases and/or adjustment, combination and/or summation magnitudes of the driving signals respectively supplied to the two or more driving lines.
  • One skilled in the art can add or combine one or more additional signals having a phase and/or magnitude as shown in any of FIGS. 10A-C , or a smaller magnitude (for example as provided by a conventional voltage divider), to form an overlapped or combined signal having more than 3 voltage levels.
  • FIGS. 10A to 10C illustrate examples of two driving signals Vd1 and Vd2 illustrated in FIG. 9 that overlap or are combined, added or summed to form the overlapped or combined driving signal Vc.
  • each of the first and second driving signals Vd1 and Vd2 may have two voltages from among the first voltage level +Vp, second voltage level Vss, and third voltage level ⁇ Vn.
  • the overlapped or combined signal Vc received by the sensing unit 30 during each of the periods T1 to T4 may have three voltages of different levels, Vap, Vss, and Van, in one period T, through adjustment, combination and/or summation of the phases and/or magnitudes of the first and second driving signals Vd1 and Vd2.
  • FIG. 11 illustrates a method for simultaneously driving two driving lines in accordance with another embodiment.
  • each of the driving signals Vd1 and Vd2 for simultaneous driving of two selected driving lines may have voltages of different levels.
  • each driving signal Vd1 and Vd2 for simultaneous driving of the two selected driving lines may be a periodic signal having a certain period.
  • the driving signals Vd1 and Vd2 may have the same phase.
  • the first and second driving signals Vd1 and Vd2 may have the same voltage in each of the first to fourth periods T1 to T4.
  • the voltage of each of the first and second driving signals Vd1 and Vd2 in the first period T1 may be the first voltage level +Vp.
  • the voltage of each of the first and second driving signals Vd1 and Vd2 in the second period T2 and/or in the fourth period T4 may be the second voltage level Vss.
  • the voltage of each of the first and second driving signals Vd1 and Vd2 in the third period T3 may be the third voltage level ⁇ Vn.
  • the overlapped or combined signal Vc received by the sensing unit 30 may have three voltages of different levels through adjustment of the phases and/or adjustment, combination and/or summation of the magnitudes of two driving signals (for example, Vd1 and Vd2).
  • the filter specification for signal detection may be relaxed.
  • the driving signals Vd1 and Vd2 have the same phase, it is possible to reduce influence caused by interference of driving lines (for example, X1 and X2.
US14/189,592 2013-02-28 2014-02-25 Method for driving touch panel Abandoned US20140240282A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020130022088A KR102066614B1 (ko) 2013-02-28 2013-02-28 조명 장치
KR10-2013-0022088 2013-02-28

Publications (1)

Publication Number Publication Date
US20140240282A1 true US20140240282A1 (en) 2014-08-28

Family

ID=50238111

Family Applications (2)

Application Number Title Priority Date Filing Date
US14/189,233 Expired - Fee Related US9404626B2 (en) 2013-02-28 2014-02-25 Illuminating apparatus
US14/189,592 Abandoned US20140240282A1 (en) 2013-02-28 2014-02-25 Method for driving touch panel

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US14/189,233 Expired - Fee Related US9404626B2 (en) 2013-02-28 2014-02-25 Illuminating apparatus

Country Status (3)

Country Link
US (2) US9404626B2 (ko)
EP (1) EP2772681B1 (ko)
KR (1) KR102066614B1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160092000A1 (en) * 2014-09-30 2016-03-31 Synaptics Incorporated Combining sensor electrodes in a matrix sensor
TWI557617B (zh) * 2014-08-29 2016-11-11 東部高科股份有限公司 掃描觸控面板的方法以及用以執行該方法的觸控積體電路
CN107092386A (zh) * 2016-02-17 2017-08-25 爱特梅尔公司 用于将电极连接到电压的设备及方法
US20180166020A1 (en) * 2016-12-13 2018-06-14 Silicon Works Co., Ltd. Pixel sensing apparatus and panel driving apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM514536U (zh) * 2015-07-01 2015-12-21 Lextar Electronics Corp 平板燈
CN108027110B (zh) * 2015-09-01 2020-07-10 Lg 伊诺特有限公司 照明装置
JP6728931B2 (ja) * 2016-04-21 2020-07-22 セイコーエプソン株式会社 光源装置およびプロジェクター
CN209325597U (zh) * 2019-03-18 2019-08-30 欧普照明股份有限公司 吸顶灯及底盘
KR20210047204A (ko) * 2019-10-21 2021-04-29 삼성전자주식회사 직하형 백라이트장치 및 이를 구비한 디스플레이장치
US11435061B2 (en) * 2020-10-29 2022-09-06 Ch Lighting Technology Co., Ltd. Direct-type panel lamp

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080162997A1 (en) * 2007-01-03 2008-07-03 Apple Inc. Channel scan logic
US20100328265A1 (en) * 2007-01-03 2010-12-30 Hotelling Steven P Simultaneous sensing arrangement
US20130093722A1 (en) * 2011-10-12 2013-04-18 Japan Display West, Inc. Display apparatus, drive circuit, driving method and electronic apparatus
US20130201154A1 (en) * 2012-02-07 2013-08-08 Zinitix Touch screen device, and driving device and driving method for touch panel
US20130249825A1 (en) * 2012-03-20 2013-09-26 Lg Display Co., Ltd. Touch sensing device and double sampling method thereof
US20140009432A1 (en) * 2012-07-09 2014-01-09 Samsung Electrio-Mechanics Co., Ltd. Capacitance sensing apparatus and method, and touchscreen apparatus
US20140132568A1 (en) * 2012-04-27 2014-05-15 Panasonic Corporation Haptic feedback device, haptic feedback method, driving signal generating device and driving signal generation method

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254453A (en) * 1978-08-25 1981-03-03 General Instrument Corporation Alpha-numeric display array and method of manufacture
US5924785A (en) * 1997-05-21 1999-07-20 Zhang; Lu Xin Light source arrangement
DE19931689A1 (de) * 1999-07-08 2001-01-11 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Optoelektronische Bauteilgruppe
DE10137042A1 (de) * 2001-07-31 2003-02-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Planare Lichtquelle auf LED-Basis
HU2874U (en) * 2004-07-08 2005-03-29 Polarium Hangulat Es Koezerzet Luminaire for producing of linearly polarized light and directing to target area
KR101095637B1 (ko) * 2004-09-23 2011-12-19 삼성전자주식회사 광 발생 장치, 이를 갖는 백라이트 어셈블리 및 백라이트어셈블리를 갖는 표시장치
KR101115800B1 (ko) * 2004-12-27 2012-03-08 엘지디스플레이 주식회사 발광소자 패키지, 이의 제조 방법 및 백라이트 유닛
KR20060124831A (ko) * 2005-05-26 2006-12-06 엘지이노텍 주식회사 백라이트 어셈블리 및 이를 구비한 액정표시장치
CN101275719B (zh) * 2007-03-27 2010-12-01 鸿富锦精密工业（深圳）有限公司 发光二极管照明装置
CN101290091B (zh) * 2007-04-20 2010-12-01 鸿富锦精密工业（深圳）有限公司 发光二极管照明装置
KR100966374B1 (ko) * 2007-08-27 2010-07-01 삼성엘이디 주식회사 백색 ｌｅｄ를 이용한 면광원 및 이를 구비한 ｌｃｄ백라이트 유닛
DE102007041193A1 (de) * 2007-08-31 2009-03-05 Osram Gesellschaft mit beschränkter Haftung Leuchtmodul für eine Beleuchtungseinrichtung und Beleuchtungseinrichtung
KR101359673B1 (ko) * 2008-06-19 2014-02-07 삼성전자주식회사 면 광원 장치 및 이를 구비하는 백라이트 유닛
JP2011175102A (ja) * 2010-02-24 2011-09-08 Sony Corp 光学シート積層体、照明装置および表示装置
JP2011222182A (ja) * 2010-04-06 2011-11-04 Minebea Co Ltd 照明装置
US8292448B2 (en) * 2010-09-24 2012-10-23 Lg Innotek Co., Ltd. Flat lighting assembly apparatus including flat lighting module
US8573805B2 (en) * 2011-01-14 2013-11-05 Huizhou Light Engine Ltd. Mosaic LED tile
JP2012174634A (ja) * 2011-02-24 2012-09-10 Sharp Corp 光源モジュールおよび光学部材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080162997A1 (en) * 2007-01-03 2008-07-03 Apple Inc. Channel scan logic
US20100328265A1 (en) * 2007-01-03 2010-12-30 Hotelling Steven P Simultaneous sensing arrangement
US20130093722A1 (en) * 2011-10-12 2013-04-18 Japan Display West, Inc. Display apparatus, drive circuit, driving method and electronic apparatus
US20130201154A1 (en) * 2012-02-07 2013-08-08 Zinitix Touch screen device, and driving device and driving method for touch panel
US20130249825A1 (en) * 2012-03-20 2013-09-26 Lg Display Co., Ltd. Touch sensing device and double sampling method thereof
US20140132568A1 (en) * 2012-04-27 2014-05-15 Panasonic Corporation Haptic feedback device, haptic feedback method, driving signal generating device and driving signal generation method
US20140009432A1 (en) * 2012-07-09 2014-01-09 Samsung Electrio-Mechanics Co., Ltd. Capacitance sensing apparatus and method, and touchscreen apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI557617B (zh) * 2014-08-29 2016-11-11 東部高科股份有限公司 掃描觸控面板的方法以及用以執行該方法的觸控積體電路
US9753583B2 (en) 2014-08-29 2017-09-05 Dongbu Hitek Co., Ltd. Method of scanning touch panel and touch integrated circuit for performing the same
US20160092000A1 (en) * 2014-09-30 2016-03-31 Synaptics Incorporated Combining sensor electrodes in a matrix sensor
US9857925B2 (en) * 2014-09-30 2018-01-02 Synaptics Incorporated Combining sensor electrodes in a matrix sensor
CN107092386A (zh) * 2016-02-17 2017-08-25 爱特梅尔公司 用于将电极连接到电压的设备及方法
US20180166020A1 (en) * 2016-12-13 2018-06-14 Silicon Works Co., Ltd. Pixel sensing apparatus and panel driving apparatus
US10565937B2 (en) * 2016-12-13 2020-02-18 Silicon Works Co., Ltd. Pixel sensing apparatus and panel driving apparatus

Also Published As

Publication number Publication date
EP2772681B1 (en) 2016-10-12
US20140240978A1 (en) 2014-08-28
EP2772681A1 (en) 2014-09-03
KR20140107902A (ko) 2014-09-05
KR102066614B1 (ko) 2020-01-15
US9404626B2 (en) 2016-08-02

Similar Documents

Publication Publication Date Title
US20140240282A1 (en) Method for driving touch panel
US9946349B2 (en) Shift register, driving method, gate driving circuit and display device
US9846502B2 (en) Touch sensor and display apparatus including the same
US9507463B2 (en) In-cell touch screen panel and display device
US20130314342A1 (en) Touch sensing device and method for driving the same
US9001067B2 (en) Method of driving touch panel
US20140176496A1 (en) Touch detection device, display device with touch detection function, and electronic apparatus
US9652107B2 (en) Touch sensor
US10528187B2 (en) Sensing circuit and touch sensor including the same
CN106814910B (zh) 触控显示面板及其驱动方法、触控显示装置
CN104571758A (zh) 一种阵列基板和显示面板
US10599264B2 (en) Touch screen panel having synchronized clock and touch driving signals
US7683892B2 (en) Touch sensing apparatus using varying signal delay input to a flip-flop
US10824290B2 (en) Touch sensor and electronic paper display panel
TWI702521B (zh) 位置指示器
US8400420B2 (en) Image display system and method for controlling a touch panel thereof
KR101580176B1 (ko) 터치 패널을 구동하는 방법
US7696986B2 (en) Touch sensing apparatus using varying signal delay input to a flip-flop
US9436317B2 (en) Touch sensor and touch sensitive display including the same
CN108880233A (zh) 一种电荷泵电路
US10642398B2 (en) Driver apparatus
CN110489002B (zh) 驱动器装置
CN114442852B (zh) 触控面板、触控方法、电子装置和存储介质
US20070108994A1 (en) Touch sensing apparatus

Legal Events

Date Code Title Description
AS Assignment

Owner name: DONGBU HITEK CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HWANG, TAE HO;REEL/FRAME:032296/0512

Effective date: 20140127

STCB Information on status: application discontinuation

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