WO2018117581A1 - Unité de détection de pression pour détecter une pluralité de caractéristiques électriques et dispositif d'entrée tactile la comprenant - Google Patents

Unité de détection de pression pour détecter une pluralité de caractéristiques électriques et dispositif d'entrée tactile la comprenant Download PDF

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Publication number
WO2018117581A1
WO2018117581A1 PCT/KR2017/014986 KR2017014986W WO2018117581A1 WO 2018117581 A1 WO2018117581 A1 WO 2018117581A1 KR 2017014986 W KR2017014986 W KR 2017014986W WO 2018117581 A1 WO2018117581 A1 WO 2018117581A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
input device
sensing unit
touch input
pressure sensor
Prior art date
Application number
PCT/KR2017/014986
Other languages
English (en)
Korean (ko)
Inventor
서봉진
Original Assignee
주식회사 하이딥
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 주식회사 하이딥 filed Critical 주식회사 하이딥
Publication of WO2018117581A1 publication Critical patent/WO2018117581A1/fr

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    • 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
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • 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
    • 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
    • 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
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
    • 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
    • G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position

Definitions

  • the present invention relates to a pressure sensing unit for detecting a plurality of electrical characteristics and a touch input device including the same, and more particularly, to a pressure sensing unit for detecting at least two electrical characteristics and calculating a magnitude of pressure. It relates to a touch input device.
  • FIG. 4A is a cross-sectional view of a touch input device configured to detect a touch position and touch pressure according to an embodiment of the present invention.
  • the detector 11 may include a receiver (not shown) connected to each of the reception electrodes RX1 to RXm through a switch.
  • the switch is turned on in a time interval for detecting the signal of the corresponding receiving electrode RX, so that the detection signal from the receiving electrode RX can be detected at the receiver.
  • the receiver may comprise an amplifier (not shown) and a feedback capacitor coupled between the negative input terminal of the amplifier and the output terminal of the amplifier, i.e., in the feedback path. At this time, the positive input terminal of the amplifier may be connected to ground.
  • the receiver may further include a reset switch connected in parallel with the feedback capacitor. The reset switch may reset the conversion from current to voltage performed by the receiver.
  • the capacitive touch sensor panel has been described in detail as the touch sensor 10, the touch sensor 10 for detecting whether or not a touch is detected in the touch input device 1000 according to an embodiment of the present invention
  • Surface capacitive, projected capacitive, resistive, SAW (surface acoustic wave), infrared, optical imaging, and distributed signals other than those described above It can be implemented using any touch sensing scheme such as dispersive signal technology and acoustic pulse recognition scheme.
  • the first signal sensed by the first pressure sensor 401 is input to the first pressure sensor controller 1301 and the second signal sensed by the second pressure sensor 402. May be input to the second pressure sensor controller 1302, and the magnitude of the pressure may be detected from the inputted first and second signals.
  • the first pressure sensor controller 1301 calculates a normalized value corresponding to the magnitude of the pressure from the first signal sensed by the first pressure sensor 401 and converts the calculated value into the processor 1500.
  • the second pressure sensor controller 1302 calculates a normalized value corresponding to the magnitude of the pressure from the second signal sensed by the second pressure sensor 402, and converts the calculated value into a processor. Output to (1500).
  • OLED uses a principle that the organic material emits light when the organic material is applied to glass or plastic to flow electricity.
  • the organic material emits light when the organic material is applied to glass or plastic to flow electricity.
  • excitons are formed in a high energy state. Is to use the generated principle.
  • the color of light varies according to the organic material of the light emitting layer.
  • OLED is composed of line-driven passive-matrix organic light-emitting diode (PM-OLED) and individual-driven active-matrix organic light-emitting diode (AM-OLED) depending on the operating characteristics of the pixels constituting the pixel matrix.
  • PM-OLED passive-matrix organic light-emitting diode
  • AM-OLED active-matrix organic light-emitting diode
  • the organic material layer 280 may include a HIL (Hole Injection Layer), a HTL (Hole Transfer Layer), an EIL (Emission Material Layer), an ETL (Electron Transfer Layer), and an EML. (Electron Injection Layer, light emitting layer) may be included.
  • HIL Hole Injection Layer
  • HTL Hole Transfer Layer
  • EIL emission Material Layer
  • ETL Electrode Transfer Layer
  • EML Electrometic Injection Layer, light emitting layer
  • the touch sensor 10 When the touch sensor 10 is disposed inside the display module 200 in the touch input device 1000, the touch sensor 10 may be configured to be positioned inside the display panel 200A. In detail, the touch sensor 10 may be formed on the bottom surface of the first substrate layers 261 and 281 or the top surface of the second substrate layers 262 and 283.
  • the sensor sheet when the pressure sensing unit includes the sensor sheet, the sensor sheet includes the first sensor sheet 440-1 and the second sensor 460 including the first sensor 450. It may be composed of a second sensor sheet (440-2). In this case, any one of the first sensor 450 and the second sensor 460 may be formed on the substrate 300, and the other may be formed on the lower surface of the display module 200.
  • the first sensor 450 is formed on the substrate 300, and the second sensor 460 is formed on the lower surface of the display module 200.
  • the pressure sensors 450 and 460 formed on the lower surface of the second substrate layer 283 disposed under the organic layer 280 may be made of an opaque material.
  • the second substrate may be used. After applying a light shielding layer such as black ink on the lower surface of the layer 283, pressure sensors 450 and 460 may be formed on the light shielding layer.
  • the electrode sheet 440 of FIG. 5 is formed without the first insulating layer 470, that is, the pressure sensors 450 and 460 are formed on one surface of the second insulating layer 471. It is also possible to form pressure sensors 450 and 460 directly on the display panel 200A by attaching the surface on which the insulating layer is not disposed, that is, the surface opposite to the second insulating layer 471, to the display panel 200A. . Specifically, the pressure sensors 450 and 60 may be directly formed on the display panel 200A by attaching a film having an electrode made of ITO to the display panel 200A.
  • pressure sensor 450 may include traces 451 that are not in contact but disposed close to each other while in an at rest state, that is, while not being strained or otherwise deformed. have.
  • the pressure sensor may have a nominal resistance such as 1.8 K ⁇ ⁇ 0.1% in the absence of strain or force.
  • the sensitivity to strain may be expressed as a gauge factor (GF).
  • the gauge coefficient can be defined as the ratio of the change in electrical resistance to the change in strain (strain), and can be expressed as a function of strain ⁇ as follows.
  • FIG. 7B and 7C illustrate exemplary pressure sensors that can be applied to a touch input device in accordance with the present invention.
  • the pressure sensor is included in a Wheatstone bridge 3000 having four different resistors (shown as R1, R2, R3, R4) to indicate the applied pressure ( Change the resistance of the gauge relative to other resistors.
  • the bridge 3000 is coupled to a pressure sensor interface (not shown), receives a drive signal (voltage V EX ) from the touch controller (not shown) to drive the pressure sensor, and sense signal (voltage) representing the pressure applied for processing.
  • V O may be sent to the touch controller.
  • the output voltage V O of the bridge 3000 may be expressed as follows.
  • the pressure sensor 450 since the trace 451 is aligned in the horizontal direction, since the length variation of the trace 451 is large with respect to the horizontal deformation, the sensitivity of the horizontal sensor is high but vertical. Since the change in the length of the trace 451 is relatively small with respect to the deformation in the direction, the sensitivity to the deformation in the vertical direction is low.
  • the pressure sensor 450 may include a plurality of subregions, and may configure different alignment directions of the trace 451 included in each subregion. By configuring the pressure sensor 450 including the traces 451 having different alignment directions, the sensitivity difference of the pressure sensor 450 with respect to the deformation direction can be reduced.
  • the touch input device 1000 may include a pressure sensor configured as a single channel by forming one pressure sensor 450 as shown in FIGS. 7A and 7D under the display panel 200A.
  • the touch input device 1000 according to the present invention may include a pressure sensor composed of a plurality of channels by forming a plurality of pressure sensors 450 under the display panel 200A as shown in FIG. 7E. By using the pressure sensor composed of the plurality of channels, it is also possible to simultaneously sense the magnitude of each of the plurality of pressures for the plurality of touches.
  • the first pressure sensor 452 included in the first pressure sensing unit may be configured in a rectangular shape having a high sensitivity of the first electrical characteristic, or the second pressure sensor included in the second pressure sensing unit ( 453 may be configured as a thin and long shape having a high sensitivity of the second electrical characteristic.
  • the material constituting the first pressure sensor 452 may be different from the material constituting the second pressure sensor 453.
  • the material constituting the first pressure sensor 452 may be made of a metal such as copper having high sensitivity of capacitance, which is a first electrical characteristic detected by the first pressure sensor 452, and a second pressure sensor.
  • the material constituting 453 may be made of silicon having a high sensitivity of resistance, which is a second electrical characteristic detected by the second pressure sensor 453.
  • the first pressure sensor 452 and the second pressure sensor are disposed so that the first pressure sensors 452 are not adjacent to each other and the second pressure sensors 453 are not adjacent to each other. 453 may be alternately arranged. In this way, by alternately disposing the first pressure sensor 452 and the second pressure sensor 453, the first electrical characteristic detected from the first pressure sensor 452 and the second detected from the second pressure sensor 453. 2 Both electrical characteristics have the advantage of maintaining a uniform sensitivity regardless of the pressure applied position.
  • the first pressure sensor 452 and the second pressure sensor 453 may be disposed on both sides of the first insulating layer 470.
  • the predetermined condition may be a condition that the touch input is a multi input.
  • the capacitance is suitable as an electrical characteristic for detecting the pressure, and in the case of the multi input, the touch input device needs to detect the pressure of each of the multi inputs.
  • Resistance which is an electrical property that is easy to detect the pressure of each of the plurality of portions that are deflected, may be suitable.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

L'invention concerne un dispositif d'entrée tactile pour détecter une pression tactile selon un mode de réalisation, comprenant : un panneau d'affichage ; et une unité de détection de pression comprenant un capteur de pression, l'unité de détection de pression pouvant détecter une première caractéristique électrique du capteur de pression et une seconde caractéristique électrique du capteur de pression, et calculer une intensité de pression sur la base de la première caractéristique électrique et de la seconde caractéristique électrique.
PCT/KR2017/014986 2016-12-23 2017-12-19 Unité de détection de pression pour détecter une pluralité de caractéristiques électriques et dispositif d'entrée tactile la comprenant WO2018117581A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0178228 2016-12-23
KR1020160178228A KR101874786B1 (ko) 2016-12-23 2016-12-23 복수의 전기적 특성을 검출하는 압력 감지부 및 이를 포함하는 터치 입력 장치

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WO2018117581A1 true WO2018117581A1 (fr) 2018-06-28

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PCT/KR2017/014986 WO2018117581A1 (fr) 2016-12-23 2017-12-19 Unité de détection de pression pour détecter une pluralité de caractéristiques électriques et dispositif d'entrée tactile la comprenant

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KR (1) KR101874786B1 (fr)
WO (1) WO2018117581A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI695304B (zh) * 2019-06-17 2020-06-01 百醫醫材科技股份有限公司 壓力感應系統及壓力感應設定方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120000630A (ko) * 2010-06-28 2012-01-04 (주)하이디스터치스크린 정전용량식 하이브리드 기능버튼
KR20120082207A (ko) * 2011-01-13 2012-07-23 삼성전자주식회사 터치 영역 확인 장치 및 방법
JP2013140190A (ja) * 2010-04-21 2013-07-18 Sharp Corp 表示装置
KR20160016734A (ko) * 2015-12-29 2016-02-15 주식회사 하이딥 스마트폰
JP6000035B2 (ja) * 2012-09-18 2016-09-28 シャープ株式会社 情報処理装置、情報処理装置の制御方法、制御プログラム、および記録媒体

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013140190A (ja) * 2010-04-21 2013-07-18 Sharp Corp 表示装置
KR20120000630A (ko) * 2010-06-28 2012-01-04 (주)하이디스터치스크린 정전용량식 하이브리드 기능버튼
KR20120082207A (ko) * 2011-01-13 2012-07-23 삼성전자주식회사 터치 영역 확인 장치 및 방법
JP6000035B2 (ja) * 2012-09-18 2016-09-28 シャープ株式会社 情報処理装置、情報処理装置の制御方法、制御プログラム、および記録媒体
KR20160016734A (ko) * 2015-12-29 2016-02-15 주식회사 하이딥 스마트폰

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI695304B (zh) * 2019-06-17 2020-06-01 百醫醫材科技股份有限公司 壓力感應系統及壓力感應設定方法

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KR20180074287A (ko) 2018-07-03
KR101874786B1 (ko) 2018-07-05

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