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WO2010023861A1 - Numériseur capable d’effectuer une distinction entre des indicateurs - Google Patents

Numériseur capable d’effectuer une distinction entre des indicateurs Download PDF

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Publication number
WO2010023861A1
WO2010023861A1 PCT/JP2009/004048 JP2009004048W WO2010023861A1 WO 2010023861 A1 WO2010023861 A1 WO 2010023861A1 JP 2009004048 W JP2009004048 W JP 2009004048W WO 2010023861 A1 WO2010023861 A1 WO 2010023861A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection
loop
loop wiring
digitizer
drive
Prior art date
Application number
PCT/JP2009/004048
Other languages
English (en)
Japanese (ja)
Inventor
小川保二
Original Assignee
株式会社ニューコム
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 株式会社ニューコム filed Critical 株式会社ニューコム
Publication of WO2010023861A1 publication Critical patent/WO2010023861A1/fr

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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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • 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
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • 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
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Definitions

  • the present invention relates to a digitizer that can identify a plurality of pointing devices, and more particularly, to a digitizer that can identify a plurality of pointing devices without providing an electrical component on the pointing device.
  • optical type and electromagnetic induction type digitizers having an indicator identifying function.
  • An example of an optical type digitizer is disclosed in Patent Document 1. This uses a light source, a polarizing plate, and a retroreflective frame provided around the detection surface to identify an indicator having a retroreflective member and an indicator having no retroreflective portion such as a finger, Each indicated position can be detected by the principle of triangulation.
  • Patent Document 2 radio waves of a predetermined frequency are transmitted by a plurality of loop coils orthogonal to the detection surface, and received by a resonance circuit provided in the indicator. At that time, the induced voltage is measured by receiving the radio wave transmitted from the resonance circuit that has received the radio wave with the same loop coil. By receiving this by sequentially switching the loop coils, the indicated position can be detected. Then, in the two indicating tools each having the resonant circuit in which the phase of the current at the resonant frequency of the resonant circuit is delayed by a predetermined time with respect to the phase of the voltage and the resonant circuit not delayed, the received signal received by these indicating tools The phase is different. Therefore, it is possible to identify the indicator using the phase change.
  • the digitizer disclosed in Patent Document 2 since the digitizer disclosed in Patent Document 2 is provided with a resonance circuit in the indicator, the cost required for the indicator is high. Furthermore, the resonance circuit of the pointing device may change the inductance of the coil and the capacitance of the capacitor due to changes in ambient temperature. For this reason, in the digitizer disclosed in Patent Document 2, if there is a phase change due to an ambient temperature change or the like, there is a case where the digitizer is erroneously recognized in identifying the pointing tool. In order to prevent this, it is necessary to provide a predetermined compensation circuit or the like.
  • the present invention is intended to provide a digitizer that can identify a plurality of indicators by whether the drive signal and the detection signal are in phase or in reverse phase without providing an electrical component in the indicator. is there.
  • the digitizer of the present invention capable of identifying a plurality of pointing devices has a plurality of U-shaped linear drive loop wirings arranged in parallel in the longitudinal direction, and is driven by each.
  • a detection loop wiring group in which a drive loop wiring group to which a signal is applied and a plurality of U-shaped linear detection loop wirings are arranged in parallel in the longitudinal direction and a detection signal is detected from each of the detection loop wiring groups.
  • the wiring is arranged such that its longitudinal direction is orthogonal to the longitudinal direction of the drive loop wiring, a detection loop wiring group, a detection surface on which the driving loop wiring group and the detection loop wiring group are arranged, and a U-shaped driving loop
  • An indicator indicated on the detection surface having a tip member made of a magnetic material or a conductor having a diameter substantially equal to or narrower than the loop width of the wiring and / or detection loop wiring, and the drive signal and the detection signal are in phase or reverse
  • the identification unit for identifying whether the tip member of the indicator is a magnetic body or a conductor based on the phase, and the degree of electromagnetic coupling between the drive loop wiring group and the detection loop wiring group by indicating the pointer on the detection surface
  • a detecting unit that detects the indicated position of the pointing tool based on the change of the pointing tool.
  • the driving loop wiring group is arranged so that each driving loop wiring overlaps with some of the other driving loop wirings, and the detection loop wiring group includes each detection loop wiring with some of the other detection loop wirings. You may arrange
  • the identification unit may be configured to switch and identify the function to be given to the pointing device according to the identification result.
  • the indicator may have a tip member made of a magnetic material and a tip member made of a conductor, and the indicator may be provided with a feeding mechanism that switches these to the tip of the indicator. .
  • the digitizer of the present invention that can identify a plurality of indicators has an advantage that the indicator can be identified by whether the drive signal and the detection signal are in phase or in reverse phase without providing an electrical component in the indicator. .
  • the pointing tool can be accurately identified and the pointing position can be detected without being affected by the pointing position in the detection surface or a change in ambient temperature.
  • FIG. 1 is a schematic configuration diagram for explaining a digitizer of the present invention capable of identifying a plurality of pointing devices.
  • FIG. 2 is a diagram for explaining the relationship between the drive signal and detection signal of the digitizer of the present invention.
  • FIG. 3 is a schematic cross-sectional view for explaining an example of the pointing device of the digitizer of the present invention.
  • FIG. 1 is a schematic configuration diagram for explaining a digitizer of the present invention capable of identifying a plurality of pointing devices.
  • the digitizer of the present invention comprises an indicator 100 and a position detection device for detecting this, and the position detection device comprises a drive loop wiring group 10, a detection loop wiring group 20, and a drive loop wiring.
  • the detection surface 30 on which the group 10 and the detection loop wiring group 20 are arranged, an identification unit 40, and a detection unit 50 are included.
  • the drive loop wiring group 10 is configured by arranging a plurality of U-shaped straight drive loop wirings 10 t1 to 10 t8 in parallel in the longitudinal direction. A drive signal is applied to each drive loop wiring. Specifically, the oscillator 12 and the drive loop wiring switch 13 are used to sequentially connect the oscillator 12 to the drive loop wirings 10 t1 to 10 t8 . A high-frequency drive signal is applied to one end of each drive loop wiring, and the other end is connected to the ground.
  • the drive loop wiring group 10 is configured by eight drive loop wirings 10 t1 to 10 t8 . However, this is merely an example, and the present invention is not limited to this. The number and size of each can be variously changed according to the size of the detection surface, the detection resolution, and the like.
  • the detection loop wiring group 20 includes a plurality of U-shaped straight detection loop wirings 20 r1 to 20 r8 arranged in parallel in the longitudinal direction.
  • the detection loop wirings 20 r1 to 20 r8 are arranged so that the longitudinal direction thereof is orthogonal to the longitudinal direction of the driving loop wirings 10 t1 to 10 t8 .
  • a detection signal is detected from each detection loop wiring. Note that one end of the detection loop wiring is connected to the synchronous detection unit 25, and the other end is connected to the ground.
  • the synchronous detection unit 25 is sequentially connected to the detection loop wirings 20 r1 to 20 r8 , and the detection loop wiring group 20
  • the induced current or induced voltage is sequentially detected by the detection unit 50.
  • the output from the oscillator 12 is also connected to the synchronous detection unit 25, and the product of the output from the oscillator 12 and the output from the detection loop wiring group 20 is taken and time-integrated.
  • the detection unit 50 measures a change in the amplitude of the induced current or the induced voltage. Note that a detection signal may be detected from all the detection loop wirings at once by providing a detection circuit separately for each detection loop wiring or combining a frequency filter circuit or the like.
  • the detection loop wiring group 20 is configured by eight detection loop wirings.
  • the present invention is not limited to this.
  • the number of wirings can be variously changed according to the size of the detection surface, the detection resolution, and the like.
  • the drive loop wiring switch 13 and the detection loop wiring switch 23 are controlled by the microcomputer 60 so as to obtain a desired output. Specifically, first, the oscillator 12 is connected to the first drive loop line 10 t1 via the drive loop line switch 13, and the amplifier 24 is connected to each of the detection loop lines 20 r1 to 20 r8 of the detection loop line group 20. Connect sequentially and measure the output signal at that time. Next, the oscillator 12 is connected to the second drive loop wiring 10 t2 , and the amplifier 24 is sequentially connected to each of the detection loop wirings 20 r1 to 20 r8 of the detection loop wiring group 20, and the output signal at that time is synchronously detected. Measurement is performed by the detection unit 50 via the unit 25. By repeating this, it is possible to measure output signals at all positions where the intersection of each drive loop wiring and detection-side loop wiring on the detection surface 30 is an XY coordinate.
  • the drive loop wiring group 10 is arranged so that each drive loop wiring overlaps some of the other drive loop wirings.
  • the detection loop wiring group 20 is also arranged so that each detection loop wiring overlaps with some of the other detection loop wirings.
  • the arrangement pitch P of adjacent loop wirings is arranged narrower than the loop width W of the loop wiring, and partly overlaps. ing.
  • the loop width W of the loop wiring is 21 mm, for example, and the arrangement pitch P is 6 mm.
  • the present invention is not necessarily limited to the overlapped ones as shown in the drawings, and may be arranged so as not to overlap with a predetermined interval.
  • the pointing device of the digitizer of the present invention has a tip member made of a magnetic material or a conductor having a diameter substantially the same as or narrower than the loop width of the U-shaped drive loop wiring or detection loop wiring.
  • the pointing tool 100 has a tip member 101 made of a magnetic material at the tip.
  • the indicator 100 may have a tip member 102 made of a conductor at the tip.
  • Such a tip member 101 or tip member 102 is configured to have a diameter narrower than the loop width W. That is, the pointing tool 100 has a size such that most of the tip member 101 or the tip member 102 falls inside the orthogonal loop wiring.
  • the magnetic material used as the tip member include ferrite, alnico, and permalloy.
  • a material of a conductor copper, aluminum, etc. are mentioned, for example.
  • the tip member of the indicator is configured to have a diameter that is substantially the same as or narrower than the loop width of the loop wiring, thereby increasing the amplitude of the detection signal as will be described later.
  • the direction of the phase of the detection signal detected depending on whether the magnetic field is a magnetic material or a conductive material is reversed.
  • the drive loop wiring and the detection loop wiring are not necessarily limited to those having the same loop width, and the diameter of the tip member is also substantially the same as or narrower than the loop width of the loop wiring having the smaller loop width. What is necessary is just to be comprised so that it may become.
  • the shape of the tip member is preferably circular and the tip is rounded in consideration of touch on the detection surface, but is not particularly limited thereto.
  • the pointing position detection of the pointing device will be described first.
  • the method of detecting the pointing position of the pointing tool is the same as that of the position detecting device using electromagnetic coupling, which has been filed by the inventors of the present application. Specifically, in a state in which the pointing tool 100 is not input on the detection surface 30, the drive loop wiring group 10 and the detection loop wiring group 20 are linearly orthogonal, and therefore are not electromagnetically coupled. Even if the group 10 is driven, no induced current or induced voltage is output from the detection loop wiring group 20.
  • the detection unit 50 detects the indicated position coordinates of the pointing tool 100 placed on the detection surface 30 by detecting XY coordinates from which an output such as an induced current based on the change in the degree of electromagnetic coupling is obtained. It is possible.
  • the detection unit 50 detects the XY coordinates from which the output of the induced current or the like based on the change in the degree of electromagnetic coupling is detected, thereby similarly indicating the indicated position coordinates of the pointing tool 100 placed on the detection surface 30. It is possible to detect.
  • the identification unit 40 identifies whether the tip member of the indicator 100 is a magnetic body or a conductor based on whether the drive signal and the detection signal are in phase or in phase.
  • a detection signal from the detection loop wiring group 20 is input to the identification unit 40 via the synchronous detection unit 25.
  • the identification unit 40 detects the phase difference of the detection signal.
  • the phase of the detection signal will be described more specifically with reference to FIG.
  • FIG. 2 is a diagram for explaining the relationship between the drive signal and the detection signal of the digitizer of the present invention.
  • 2A is a schematic perspective view for explaining the relationship between the drive loop wiring and the detection loop wiring
  • FIG. 2B is a graph showing the drive signal
  • FIG. 2C is the tip of the magnetic body. It is a graph showing the detection signal in the case of the indicator of a member
  • FIG.2 (d) is a graph showing the detection signal in the case of the indicator of the front-end
  • the same reference numerals as those in FIG. 1 denote the same parts.
  • the drive loop line 10 t flows drive current i t.
  • a drive signal driving current i t as shown in FIG. 2 (b), for example a sine wave.
  • the indicator 100 having a tip member having a diameter smaller than the loop width is input.
  • the magnetic field in the direction perpendicular to the detection surface 30 increases as the current of the drive loop wiring 10 t increases.
  • an induced current is generated in the detection loop wiring 20 r in a direction that prevents the change in the magnetic field.
  • both the drive loop wiring 10 t and the detection loop wiring 20 r are configured by a right-handed loop in the same direction as in the illustrated example
  • the detection surface 30 increases as the current of the drive loop wiring 10 t increases. Since a downward magnetic field is increased with respect to, so as to prevent changes in the magnetic field, left-handed induced current is generated in the detection loop wiring 20 r. That is, at this time, as shown in FIG. 2C, a detection signal having a phase opposite to that of the drive signal is detected.
  • the magnetic field in the direction perpendicular to the detection surface 30 increases as the current of the drive loop wiring 10 t increases.
  • an eddy current is generated in a direction that prevents the change in the magnetic field.
  • the magnetic field in the direction perpendicular to the detection surface 30 increases in the direction opposite to the direction of the magnetic field due to the increase in the current of the drive loop wiring 10t .
  • an induced current is generated in a direction that prevents the change in the magnetic field.
  • both the drive loop wiring 10 t and the detection loop wiring 20 r are configured by right-handed loops in the same direction as in the illustrated example
  • the detection surface 30 increases as the current of the drive loop wiring 10 t increases. Therefore, a left-handed eddy current is generated in the conductor of the tip member 102 so as to prevent this magnetic field. Further, to prevent the change of the upward magnetic field generated by the eddy currents, induced current right-handed is generated in the detection loop wiring 20 r. That is, at this time, as shown in FIG. 2D, a detection signal in phase with the drive signal is detected.
  • the phase of the detected signal is reversed depending on whether the tip member of the indicator 100 is a magnetic body or a conductor. Therefore, by detecting the phases of the drive signal and the detection signal, it is possible to identify whether the tip member of the indicator 100 is a magnetic body or a conductor. If either the drive loop wiring or the detection loop wiring is left-handed as opposed to the illustrated example, the output detection signal is inverted.
  • the indicator is identified based on whether the drive signal and the detection signal are in phase or opposite phase, and according to the detection principle of the present invention, the current detected in the conductor and the magnetic body Therefore, the direction of winding the loop wiring is not particularly limited to the illustrated example.
  • the indicated position coordinate information and the identification information detected as described above are then sent to an electronic computer such as a personal computer and used as input information to predetermined software or the like.
  • the identifying unit identifies the pointing device.
  • the present invention is not limited to this, and the identifying unit identifies only whether the phase is the same phase or the opposite phase, and sends it to the computer. It is of course possible to identify various pointing tools on the electronic computer after being sent.
  • the digitizer of the present invention it is possible to identify a plurality of indicators by using the tip member of the indicator as a conductor and a magnetic material. Thereby, in the identification part, it becomes possible to switch and identify the function to be given to the pointing tool according to the identification result. That is, for example, when the detection signal is in phase with the drive signal, the input indicator can be recognized as a black pen, and when the detection signal is in reverse phase, the input indicator can be recognized as an eraser. . Further, by inputting the pointing tool having a tip member made of a magnetic material and the pointing tool having a tip member made of a conductor separately for each of two persons, each person's input is recognized and the pointing position is recognized. It is also possible to detect.
  • a tip member made of a magnetic material and a tip member made of a conductor may be provided in one indicator.
  • a magnetic body is provided on one end side of the pointing device main body, and a conductor is provided on the other end side as a tip member, so that one pointing device has two functions like a pencil with an eraser. It is also possible.
  • FIG. 3 is a schematic cross-sectional view for explaining an example of the pointing device of the digitizer of the present invention.
  • the same reference numerals as those in FIG. 1 denote the same parts.
  • the pointing device 100 includes a tip member 101 made of a magnetic material and a tip member 102 made of a conductor.
  • the tip member 101 and the tip member 102 are each connected to the feeding mechanism 110 via a shaft portion. These are housed in a housing 105 that defines an outer frame of the pointing device 100.
  • the feeding mechanism 110 rotates the rotating shaft 107 about the longitudinal direction of the pointing device 100 so as to exclusively feed the tip member 101 or the tip member 102 connected to the feeding mechanism 110 out of the housing 105. It is composed of.
  • the digitizer of the present invention detects when the input is performed on the detection surface by the indicator 100 that has extended the tip member 101 and by the indicator 100 that has extended the tip member 102.
  • the phase of the detection signal with respect to the drive signal is reversed, so that the identification unit can identify which tip member has been fed out and input.
  • the indicator only needs to be provided with a magnetic body or a conductor at the tip thereof, and there is no need to provide an electrical component. Tools can be configured very inexpensively.
  • the phase of the detection signal with respect to the drive signal is always reversed between the magnetic body and the conductor, stable identification is possible without being affected by the surrounding environment.
  • the digitizer of the present invention capable of identifying a plurality of pointing devices is not limited to the above illustrated example, and it is needless to say that various changes can be made without departing from the gist of the present invention.
  • the digitizer of the present invention discriminates the indicator according to whether it is the same phase or the opposite phase, but it is also possible to combine other identification methods by providing an electrical component on the indicator.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Position Input By Displaying (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

L’invention concerne un numériseur capable d’effectuer une distinction entre plusieurs indicateurs et de déterminer si un signal de commande et un signal de détection sont en équiphase ou en antiphase sans qu’aucun composant électrique ne soit présent dans les indicateurs. Ce numériseur (100) est constitué d’un groupe de lignes de circuits de commande (10), d’un groupe de lignes de circuits de détection (20), d’une surface de détection (30) sur laquelle ces groupes de lignes de circuits sont disposés, d’une unité de distinction (40), et d’une unité de détection (50). Plusieurs lignes de circuits linéaires en U dans le groupe de lignes de circuits de commande (10) sont disposées parallèlement à la direction longitudinale de celui-ci, et plusieurs lignes de circuits linéaires en U dans le groupe de lignes de circuits de détection (20) sont disposées parallèlement à la direction longitudinale de celui-ci, les directions longitudinales respectives étant orthogonales l’une par rapport à l’autre. Les indicateurs (100) ont des éléments d’extrémité (101, 102), respectivement, chacun étant formé d’un matériau magnétique ou d’un matériau conducteur ayant un diamètre presque aussi large ou plus étroit que la largeur de circuit de chaque ligne de circuit. L’unité de distinction (40) distingue si l’élément d’extrémité est magnétique ou conducteur selon que le signal de commande et le signal de détection sont en équiphase ou en antiphase. En se basant sur le changement de degré de couplage électromagnétique du groupe de lignes de circuits de commande (10) et du groupe de lignes de circuits de détection (20), l’unité de détection (50) détecte la position indiquée par l’indicateur (100).
PCT/JP2009/004048 2008-08-28 2009-08-24 Numériseur capable d’effectuer une distinction entre des indicateurs WO2010023861A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-219826 2008-08-28
JP2008219826A JP2010055385A (ja) 2008-08-28 2008-08-28 複数の指示具を識別可能なデジタイザ

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8890829B2 (en) 2012-08-21 2014-11-18 Samsung Electro-Mechanics Co., Ltd. Digitizer
KR20190047850A (ko) 2017-10-30 2019-05-09 동우 화인켐 주식회사 디지타이저 및 이를 포함하는 표시 장치
KR20190047848A (ko) 2017-10-30 2019-05-09 동우 화인켐 주식회사 디지타이저 및 이를 포함하는 표시 장치
KR20190106653A (ko) 2018-03-07 2019-09-18 동우 화인켐 주식회사 입력 센서 및 이를 포함하는 표시장치

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130107886A (ko) * 2012-03-23 2013-10-02 삼성전기주식회사 디지타이저
JP5984259B2 (ja) * 2012-09-20 2016-09-06 株式会社ワコム 位置検出装置
US20160062532A1 (en) * 2013-10-21 2016-03-03 Newcom Techno Inc. Specified position detection device
JP5959038B1 (ja) * 2015-03-06 2016-08-02 株式会社ワコム 電子ペン及び電子ペン用本体部
CN107430451B (zh) 2015-03-06 2020-09-04 株式会社和冠 电子笔和电子笔用主体部
TWI736580B (zh) * 2016-04-22 2021-08-21 日商和冠股份有限公司 電子筆及電子筆本體部

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419330A (en) * 1977-07-14 1979-02-14 Nippon Telegr & Teleph Corp <Ntt> Tablet input unit
JPH05127804A (ja) * 1991-11-01 1993-05-25 Graphtec Corp コードレスデジタイザ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419330A (en) * 1977-07-14 1979-02-14 Nippon Telegr & Teleph Corp <Ntt> Tablet input unit
JPH05127804A (ja) * 1991-11-01 1993-05-25 Graphtec Corp コードレスデジタイザ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8890829B2 (en) 2012-08-21 2014-11-18 Samsung Electro-Mechanics Co., Ltd. Digitizer
KR20190047850A (ko) 2017-10-30 2019-05-09 동우 화인켐 주식회사 디지타이저 및 이를 포함하는 표시 장치
KR20190047848A (ko) 2017-10-30 2019-05-09 동우 화인켐 주식회사 디지타이저 및 이를 포함하는 표시 장치
KR20190106653A (ko) 2018-03-07 2019-09-18 동우 화인켐 주식회사 입력 센서 및 이를 포함하는 표시장치

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