KR101659281B1 - A pressure sensing device for increasing the accuracy of pressure location by using assigned channel of display area on the 2-layer structure touch screen panel - Google Patents

A pressure sensing device for increasing the accuracy of pressure location by using assigned channel of display area on the 2-layer structure touch screen panel Download PDF

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Publication number
KR101659281B1
KR101659281B1 KR1020150078864A KR20150078864A KR101659281B1 KR 101659281 B1 KR101659281 B1 KR 101659281B1 KR 1020150078864 A KR1020150078864 A KR 1020150078864A KR 20150078864 A KR20150078864 A KR 20150078864A KR 101659281 B1 KR101659281 B1 KR 101659281B1
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South Korea
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touch
screen panel
pressure
touch screen
layer
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KR1020150078864A
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Korean (ko)
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황호연
김영일
조용진
이한성
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(주)이미지스테크놀로지
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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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

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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

The present invention relates to a pressure sensing device for increasing accuracy of a pressure location through channel allocation per a screen area in a two-layer structure touch screen panel. The device comprises: a touch screen panel touch unit (110) in which a plurality of Tx-electrode patterns (113) are formed; and a touch screen panel controller (120) electrically connected to the touch screen panel touch unit (110). Therefore, the device can improve accuracy of a pressure location per a screen area.

Description

TECHNICAL FIELD [0001] The present invention relates to a pressure sensing device for increasing the accuracy of a pressure position by assigning a channel for each screen region in a two-layer structure touch screen panel. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure sensing device, SCREEN PANEL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure sensing device, and more particularly, to a pressure sensing device for enhancing the accuracy of a pressure position through channel allocation for each screen area in a two-layer structure touch screen panel.

In general, a touch screen panel is a screen equipped with a special input device for receiving a position of a touch when the touch is performed by a hand, Refers to a screen that allows the user to directly input data on the screen so that the user can grasp the position of the hand or object and perform specific processing by the stored software.

Such a touch screen panel performs a function by adding a device called a touch sensor to a screen of a general monitor or a mobile device. The touch sensor uses a transparent electrode functioning as Tx and Rx to generate a plurality of rectangular lattices, and an electric field between Tx and Rx is formed in each lattice. The change of the electric field when it touches this grid with the fingertip or other object causes the change of the capacitance and it has the function to detect the change and to detect the contact position. Therefore, if a character or picture information displayed in advance on the screen equipped with the touch sensor is touched by hand, it is possible to grasp what the user has selected in accordance with the position of the contacted screen, So that the user can obtain desired information. Due to the characteristics of the touch screen panel, it is widely used in public places such as a subway, a department store, a bank, and the like, and is widely applied to terminals for sale in various shops. .

Recently, mobile devices such as smart phones, which are rapidly spreading, are implementing various functions by applying touch sensors. A touch sensor recognizes a touch by using a resistance film method or a capacitance method. Until 2008, the resistance film method has been widely used because it is inexpensive in terms of economy, but recently, it has been replaced with a capacitive type which has durability, sharpness and multi-touch capability in almost all devices.

The capacitive touch screen panel uses a capacitance in the body of a person to measure a change in resistance and current caused by a capacitance of a person using an AC voltage to recognize a touch, And a method of judging the presence or absence of touch by comparing the amount of charge. Such a capacitive touch screen panel has excellent durability as compared with a resistive film type using a film, so that it does not interfere with moisture or small damage. In addition, the accuracy of the touch is relatively high, and the optical characteristic is excellent and the screen is clear. In particular, the touch screen panel using the electrostatic capacity charging method is widely used in mobile smart devices because it can recognize multi points and can be manufactured in a small size.

The structure of a conventional two-layer (GFF) touch screen panel generally consists of a Tx channel that sends a signal and an Rx channel that receives a signal. That is, it is possible to detect whether or not the user touches by measuring the difference in the amount of capacitance generated when a signal sent from the Tx channel is input to the Rx channel. At this time, when the general user uses the touch device, the pressure is accompanied by whether the size is large or small. For example, some people may touch a light touch while others may consciously push and input. Also, there may be cases where the same person touches lightly in some cases, or presses the lightly. In the touch screen panel of the conventional two-layer structure, there have been various studies to enable simple sensing of the touch position and pressure sensing, but it is difficult to provide the pressure sensing method using the touch pressure .

The present invention has been proposed in order to solve the above-mentioned problems of the previously proposed methods. In constructing a touch screen panel of a two-layer (GFF) structure, a plurality of Tx- A Tx-layer in which a pressure-sensitive sensor electrically separated and finely divided is further disposed so as to increase the accuracy of the pressure position through channel allocation for each screen region, and a plurality of Rx-electrode patterns are formed on the Tx- Layers are formed so that the channels of the touch sensor are formed through a plurality of intersecting nodes, so that the two sensing effects of touch sensing and pressure sensing can be implemented and used in a two-layer structure touch screen panel In addition, it is possible to divide and process the pressure receiving area through the pressure sensor formed with the subdivided pattern As to provide a specific area of the screen which allows the accuracy of pressure location can be improved, two-layer structure on the touch screen panel to increase the accuracy of a pressure position over the display area for each channel assigned to the pressure-sensing device for that purpose.

In addition, since the pressure sensing sensor subdivided between the Tx-electrode patterns formed on the Tx-layer is made of the same material as the Tx-electrode pattern, no additional process or cost is added to the present invention, (R) channel of the controller (IC) of the touch screen panel, which enables the design of a touch screen panel that does not require a separate additional IC. It is another object of the present invention to provide a pressure sensing device that improves the accuracy of a pressure position through channel allocation for each screen area in a structure touch screen panel.

According to an aspect of the present invention, there is provided a pressure sensing apparatus for enhancing the accuracy of a pressure position through channel assignment in a screen area in a two-

A pressure sensing device for enhancing the accuracy of a pressure location through channel assignment on a screen area in a two-layer structure touch screen panel,

A plurality of Tx-electrode patterns for forming a transmission (Tx) channel are formed on an LCD upper part forming an air gap, and a plurality of Tx-electrode patterns are formed between the plurality of Tx- A plurality of Rx-electrode patterns for forming a reception (Rx) channel are formed on the upper part of the Tx-layer and a Tx-layer in which a plurality of Rx-electrode patterns are formed A touch sensor for forming a channel through a plurality of nodes in which an Rx-layer is arranged and intersected; and a touch screen panel touch unit having a structure in which a cover glass is disposed above an Rx-layer of the touch sensor; And

The touch screen panel is electrically connected to the touch panel touch part, and the contact area between the touch glass touch panel and the touch screen touch panel is changed according to touch amplitude and bending amplitude and area And a touch screen panel controller that performs a touch sensing and a pressure sensing function with a variation amount of a mutual capacitance.

Preferably, the touch screen panel touch unit includes:

An electric field is formed between the transmission (Tx) channel of the Tx-electrode pattern formed on the Tx-layer and the reception (Rx) channel of the Rx-electrode pattern formed on the Rx-layer, As the finger or the stylus pen is touched, the corresponding electric field is moved to the finger or the stylus pen, and the mutual electrostatic capacitance value input to the reception (Rx) channel of the Rx-electrode pattern formed on the Rx-layer is reduced, The mutual electrostatic capacitance value is transmitted to the touch screen panel controller so that the touch sensing function is performed.

Preferably, the touch screen panel touch unit includes:

An electric field is formed between the transmission (Tx) channel of the Tx-electrode pattern formed on the Tx-layer and the reception (Rx) channel of the Rx-electrode pattern formed on the Rx-layer, And the distance between the cover glass and the module of the touch sensor is reduced toward the air gap by the touch pressure (strength of the force) to which the finger or the stylus pen is touched, The change amount of the mutual capacitance is detected by the pressure sensor separated by the subdivision formed in the Tx-layer disposed at the lower end, and is transmitted to the touch screen panel controller to perform a pressure sensing function for the accurate region of the pressure position per screen area . ≪ / RTI >

Preferably, the pressure sensing sensor comprises:

Electrode pattern formed on the Tx-layer, and may be formed of the same material as the Tx-electrode pattern.

Preferably,

A gap is formed between the pressure sensor and the lower LCD, and the material to be filled in the air gap may be any one of a gel type adhesive whose distance can be varied by air, fluid, or pressure .

Preferably, the touch screen panel controller comprises:

(AFE) and an analog-to-digital conversion circuit (ADC), and performs a touch sensing function through mutual electrostatic capacitance values moved by the finger or the stylus pen, The pressure sensor is formed in a subdivided pattern as the cover glass and the touch sensor are bent toward the air gap in accordance with the touch pressure, A pressure sensing function can be performed.

More preferably, the touch screen panel controller comprises:

The analog-to-digital conversion circuit receiving the analog waveform signal transmitted through the analog circuit (AFE) digitizes the reduced amount of the mutual electrostatic capacitance into a digital code signal and recognizes and processes the touch and pressure .

According to the pressure sensing apparatus for improving the accuracy of the pressure position through channel allocation for each screen region in the two-layer structure touch screen panel proposed in the present invention, in constructing the touch screen panel of a two-layer (GFF) structure, A Tx-layer in which a subdivided pressure sensing sensor is additionally disposed so as to increase the accuracy of a pressure position through channel allocation for each screen region between a plurality of Tx-electrode patterns for channel configuration is constituted, and Tx Layer structure in which a plurality of Rx-electrode layers having a plurality of Rx-electrode patterns formed on the upper layer are arranged to form channels of the touch sensor through a plurality of intersecting nodes, thereby providing touch sensing and pressure sensing And a pressure sensing sensor formed in a subdivided pattern, Configured to process the divided areas receiving a pressure whereby it is possible to ensure the accuracy of the specific area of the screen where the pressure can be improved.

In addition, according to the present invention, since the pressure sensitive sensor subdivided between the Tx-electrode patterns formed on the Tx-layer is made of the same material as the Tx-electrode pattern, no additional process or cost is added, And by using a subdivided pressure sensor as an Rx channel of a controller (IC) of a touch screen panel, it is possible to design a touch screen panel that does not require a separate additional IC.

FIG. 1 is a block diagram of a functional block of a pressure sensing device for enhancing the accuracy of a pressure position through channel allocation for each screen area in a two-layer structure touch screen panel according to an embodiment of the present invention.
FIG. 2 is a flow chart illustrating a method of dividing a Tx-electrode pattern of a Tx-layer applied to a pressure sensing device for increasing the accuracy of a pressure position through channel allocation for each screen region in a two-layer structure touch screen panel according to an exemplary embodiment of the present invention. Lt; RTI ID = 0.0 > a < / RTI > pressure sensing sensor.
FIG. 3 is a diagram illustrating a pressure-sensitive sensor according to an exemplary embodiment of the present invention. Referring to FIG. 3, in a two-layered touch screen panel, As shown in Fig.
4 is a diagram illustrating a configuration of an operation state of a pressure sensing device for increasing the accuracy of a pressure position through channel allocation for each screen region in a two-layer structure touch screen panel according to an embodiment of the present invention.
FIG. 5 is a diagram showing a configuration of the operation state of the curvature of the cover glass and the touch sensor of the pressure sensing device for increasing the accuracy of the pressure position through channel allocation for each screen region in the two-layer structure touch screen panel according to an embodiment of the present invention. A drawing.
FIG. 6 is a diagram illustrating an internal configuration of a touch screen panel controller applied to a pressure sensing device for increasing the accuracy of a pressure position through channel allocation for each screen region in a two-layer structure touch screen panel according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to "include" an element means that it may include other elements, rather than excluding other elements, unless specifically stated otherwise.

FIG. 1 is a block diagram of a functional block of a pressure sensing device for improving the accuracy of a pressure position through channel allocation for each screen region in a two-layer structure touch screen panel according to an embodiment of the present invention. In the two-layer structure touch screen panel according to an embodiment of the present invention, the divided pressure between the Tx-electrode patterns of the Tx-layer applied to the pressure sensing device for increasing the accuracy of the pressure position through channel allocation for each screen region FIG. 3 is a view illustrating a layout of a sensing sensor according to an exemplary embodiment of the present invention. FIG. 3 is a graph illustrating a relationship between a pressure applied to a pressure sensing device FIG. 4 is a view illustrating an example in which a screen region of a pressure position is separated according to a detailed pattern structure of a detection sensor. FIG. Layer structure according to an embodiment of the present invention. FIG. 5 is a view illustrating a configuration of an operating state of a pressure sensing device for increasing the accuracy of a pressure position through channel allocation for each screen region in a two- FIG. 6 is a view showing the configuration of the operating state of the curvature of the cover glass and the touch sensor of the pressure sensing device for increasing the accuracy of the pressure position through channel allocation for each screen area in the structure touch screen panel. FIG. FIG. 2 is a diagram illustrating an internal configuration of a touch screen panel controller applied to a pressure sensing device for increasing the accuracy of a pressure position through channel allocation for each screen region in a two-layer structure touch screen panel. As shown in FIGS. 1 to 6, the pressure sensing device 100 enhances the accuracy of a pressure position through channel assignment in each screen region in a two-layer (GFF) structure touch screen panel according to an embodiment of the present invention. A touch screen panel touch unit 110, and a touch screen panel controller 120.

The touch screen panel touch unit 110 includes a plurality of Tx-electrode patterns 113 for forming a transmission (Tx) channel on an LCD 112 forming an air gap 111, Layer (Tx-layer) in which a pressure-sensitive sensor 114 for sensing the pressure separated for electrically separating is disposed in order to increase the accuracy of the pressure position through channel allocation for each screen area between the Tx- And an Rx-layer 117 in which a plurality of Rx-electrode patterns 116 for forming a reception (Rx) channel are formed above the Tx-layer 115 are arranged and crossed through a plurality of nodes, And a cover glass 119 is disposed above the Rx-layer 117 of the touch sensor 118. The touch sensor 118 is disposed on the Rx- The touch screen panel touch unit 110 receives a transmission (Tx) channel of the Tx-electrode pattern 113 formed on the Tx-layer 115 and a reception (Rx-electrode) pattern 116 formed on the Rx- (Rx) layer formed on the Rx-layer 117 as the electric field is moved to the finger or the stylus pen as the finger or the stylus pen is touched, and an electric field is formed between the Rx- The mutual electrostatic capacitance value input to the reception (Rx) channel of the electrode pattern 116 is reduced, and the reduced mutual electrostatic capacitance value is transmitted to the touch screen panel controller 120 to perform the touch sensing function.

The touch screen panel touch unit 110 receives a transmission (Tx) channel of the Tx-electrode pattern 113 formed on the Tx-layer 115 and a reception (Rx-electrode) pattern 116 formed on the Rx- The electric field is formed between the touch sensor 118 and the touch sensor 118 according to the touch pressure (strength of the force) with which the finger or the stylus pen is touched, Layer 115 formed with a lower amount of change in mutual capacitance caused by a distance between the LCD module 112 and the LCD 112 due to banding of the module of the air gap 111 toward the air gap 111, And is transmitted to the touch screen panel controller 120 to perform a pressure sensing function for an accurate region of the pressure position of each screen region. Here, the pressure sensing sensor 114 is formed as a subdivided pattern electrically separated between the Tx-electrode patterns 113 formed on the Tx-layer 115, and the same material as the Tx-electrode pattern 113 . That is, although the pressure sensor 114 is separately configured to be divided into the Tx-layer 115 and the pressure receiving section, the Tx-electrode pattern 113 and the Tx-electrode pattern 113 can be made of the same material So that no additional process or cost can be added.

In addition, since the pressure sensor 114 utilizes the Rx channel of the touch screen IC, the touch screen panel controller 120 to be described later can be used without requiring a separate additional IC. That is, the pressure sensor 114 separates the Tx channel at the lower end and the Rx channel at the upper end to the lower end Tx to separate the pressure into the area to receive the pressure, and uses the Rx pattern. When the touch screen module is bent, the change amount of the lower-end mutual capacitance caused by the distance from the LCD 112 is measured and sensed. The air gap 111 forms a gap between the pressure sensor 114 and the lower LCD 112. The material filled in the air gap 111 may vary in distance by air, Any one of gel-type adhesives may be used.

The touch screen panel controller 120 is electrically connected to the touch screen panel touch unit 110 and is electrically connected to the touch glass panel 119. The touch screen panel controller 120 is electrically connected to the touch screen panel touch unit 110, The touch sensing and the pressure sensing function are performed by a variation amount of the mutual capacitance according to the amplitude of the touch (Amplitude) and the amplitude of the bending (bending amplitude and area). 6, the touch screen panel controller 120 includes an analog circuit (AFE) 121 and an analog-to-digital conversion circuit (ADC) 122 and is moved by a finger or a stylus pen The cover glass 119 and the touch sensor 118 are bent toward the air gap 111 in accordance with the touch pressure of the finger or the stylus pen to contact the LCD 112 As the distance approaches, it is possible to perform a pressure sensing function for an accurate region of the pressure position of each screen region through the changed mutual capacitance value transmitted from the pressure sensing sensor 114 formed in a subdivided pattern. In addition, the touch screen panel controller 120 converts the reduced amount of mutual capacitance into a digital code signal by an analog-to-digital conversion circuit 122 that receives an analog waveform signal transmitted through an analog circuit (AFE) 121 The touch and pressure sensing process can be performed.

The pressure sensing device 100 for enhancing the accuracy of the pressure position through channel assignment for each screen region in the two-layer (GFF) structure touch screen panel according to an embodiment of the present invention is basically a touch screen panel touch- (110) and a touch screen panel controller (120). Here, the touch screen panel touch unit 110 forms a module of the touch sensor 118, and uses a Tx-layer 115 and an Rx-layer 117 of a two-layer (GFF) structure. 2 and 3, the Tx-layer 115 is formed of a plurality of Tx-electrode patterns 113 for transmission (Tx) channel configuration and electrically separated from each other to form a subdivided pattern. The sensor 114 is formed of the same material. That is, the pressure sensing sensor 114 of the auxiliary electrode is subdivided into the Tx-layer 115 and the pressure receiving portion is divided into a plurality of Tx-electrode patterns 113 so that the pressure can be sensed. 5, the pressure sensing sensor 114 receives pressure from the module of the touch sensor 118 separated into the Tx channel at the lower end and the Rx channel at the upper end, and receives the pressure of the cover glass 119 and the touch sensor 118 When the module is warped, the pressure can be sensed by measuring the amount of change in the lower mutual capacitance that occurs as the distance from the LCD 112 approaches. In the present invention, the pressure sensing sensor 114 is subdivided to divide and process the pressure receiving area, so that the display can be distinguished and the place where the pressure is input can be detected.

The present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics of the invention.

100: Pressure sensing device according to one embodiment of the present invention
110: touch screen panel touch portion 111: air gap
112: LCD 113: Tx-electrode pattern
114: Pressure sensor 115: Tx-layer
116: Rx-electrode pattern 117: Rx-layer
118: touch sensor 119: cover glass
120: touch screen panel controller (IC) 121: analog circuit
122: analog-to-digital conversion circuit

Claims (7)

A pressure sensing device (100) for increasing the accuracy of a pressure location through channel allocation by screen area in a two-layered touch screen panel,
A plurality of Tx-electrode patterns 113 for forming a transmission (Tx) channel are formed on an LCD 112 forming an air gap 111, and a plurality of Tx- A Tx-layer 115 in which pressure-sensitive sensors 114 are separately disposed and electrically separated to increase the accuracy of the pressure position through channel allocation for each screen area, A touch sensor 118 that forms a channel through a plurality of nodes in which an Rx-layer 117 having a plurality of Rx-electrode patterns 116 for receiving (Rx) A touch screen panel touch unit 110 having a structure in which a cover glass 119 is disposed on an Rx layer 117 of the touch sensor 118; And
The touch panel touch unit 110 is electrically connected to the touch screen panel 110 and has touch amplitudes and warps generated when a finger or a stylus pen touches the cover glass 119 of the touch screen panel touch unit 110 And a touch screen panel controller (120) that performs a touch sensing and a pressure sensing function with a variation amount of a mutual capacitance according to an amplitude (Bending Amplitude & Area)
The touch screen panel touch unit 110 includes:
An electric field (Rx) between the transmission (Tx) channel of the Tx-electrode pattern 113 formed in the Tx-layer 115 and the reception (Rx) channel of the Rx- electrode pattern 116 formed in the Rx- The Rx-electrode pattern 116 formed on the Rx-layer 117 while the corresponding electric field is moved by a finger or a stylus pen as the finger or the stylus pen is touched is formed with a mutual capacitance value, The mutual electrostatic capacitance value input to the reception (Rx) channel of the touch screen panel controller 120 is reduced, and the reduced mutual electrostatic capacitance value is transmitted to the touch screen panel controller 120 to perform the touch sensing function,
The touch screen panel touch unit 110 includes:
An electric field (Rx) between the transmission (Tx) channel of the Tx-electrode pattern 113 formed in the Tx-layer 115 and the reception (Rx) channel of the Rx- electrode pattern 116 formed in the Rx- The module of the cover glass 119 and the touch sensor 118 has a mutual capacitance value so that the modules of the cover glass 119 and the touch sensor 118 are arranged in the air gap The variation amount of the mutual capacitance caused by the distance from the LCD 112 due to the banding to the side of the liquid crystal panel 111 is smaller than the amount of change in the mutual capacitance formed in the Tx- Layer touch screen panel is sensed by the sensing sensor 114 and transmitted to the touch screen panel controller 120 to perform a pressure sensing function on an accurate area of the pressure position of each screen area. Pressure sensing device to increase the accuracy of the pressure position by yeokbyeol channel assignment.
delete delete The pressure sensor according to claim 1, wherein the pressure sensor (114)
And the Tx-electrode pattern 113 formed on the Tx-layer 115. The Tx-electrode pattern 113 is formed of the same material as that of the Tx-electrode pattern 113, , A pressure sensing device that increases the accuracy of the pressure position through channel allocation by screen area in a two-layer structure touch screen panel.
The airbag device according to claim 1, wherein the air gap (111)
A gap is formed between the pressure sensor 114 and the lower LCD 112. The material to be filled in the air gap 111 is a gel that can vary in distance by air, ) -Type adhesive is used in a touch screen panel of a two-layer structure.
The touch screen panel controller (120) according to any one of claims 1, 4, and 5,
(AFE) 121 and an analog-to-digital conversion circuit (ADC) 122, and performs a touch sensing function through mutual electrostatic capacitance values which are shifted by the finger or the stylus pen, The cover glass 119 and the touch sensor 118 are bent toward the air gap 111 in accordance with the touch pressure of the finger or the stylus pen so that the distance between the cover glass 119 and the touch sensor 118 becomes closer to the LCD 112, Layer structure touch screen panel performs a pressure sensing function on an accurate region of the pressure position of each screen region based on the changed mutual capacitance value transmitted from the pressure sensor 114. [ A pressure sensing device that increases the accuracy of the position.
The touch screen panel controller (120) according to claim 6, wherein the touch screen panel controller (120)
The analog-to-digital conversion circuit 122 receives the signal of the analog waveform transmitted through the analog circuit (AFE) 121, digitizes the reduced amount of mutual capacitance into a digital code signal, Sensing touch screen panel to increase the accuracy of the pressure position through channel allocation for each screen area.
KR1020150078864A 2015-06-03 2015-06-03 A pressure sensing device for increasing the accuracy of pressure location by using assigned channel of display area on the 2-layer structure touch screen panel KR101659281B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116819837A (en) * 2023-08-25 2023-09-29 惠科股份有限公司 Display panel, preparation method thereof and display device
US11984054B2 (en) 2020-11-09 2024-05-14 Samsung Electronics Co., Ltd. Electronic device having flexible display

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US20110080373A1 (en) * 2009-10-07 2011-04-07 Wintek Corporation Touch Panel and Display Device Using the Same
KR20140022222A (en) * 2012-08-13 2014-02-24 엘지디스플레이 주식회사 Input system and method for detecting touch using the same
US20140210770A1 (en) * 2012-10-04 2014-07-31 Corning Incorporated Pressure sensing touch systems and methods
KR101452302B1 (en) * 2013-07-29 2014-10-22 주식회사 하이딥 Touch sensor panel

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Publication number Priority date Publication date Assignee Title
US20110080373A1 (en) * 2009-10-07 2011-04-07 Wintek Corporation Touch Panel and Display Device Using the Same
KR20140022222A (en) * 2012-08-13 2014-02-24 엘지디스플레이 주식회사 Input system and method for detecting touch using the same
US20140210770A1 (en) * 2012-10-04 2014-07-31 Corning Incorporated Pressure sensing touch systems and methods
KR101452302B1 (en) * 2013-07-29 2014-10-22 주식회사 하이딥 Touch sensor panel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11984054B2 (en) 2020-11-09 2024-05-14 Samsung Electronics Co., Ltd. Electronic device having flexible display
CN116819837A (en) * 2023-08-25 2023-09-29 惠科股份有限公司 Display panel, preparation method thereof and display device
CN116819837B (en) * 2023-08-25 2024-01-26 惠科股份有限公司 Display panel, preparation method thereof and display device

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