KR100969504B1 - Touch inputting apparatus integral sensors - Google Patents

Abstract

The present invention is a sensor-integrated touch input device, and more particularly, in a touch input device (eg, a touch screen or a touch pad) in which a user inputs an action or a position command using a pointing object (eg, a finger or an illustration tip). The sensor unit having a plurality of force sensors is integrally provided in the touch input device and the protection unit is formed to minimize the disturbance of the detection signal by making the sensing performance of the plurality of force sensors the same. The present invention includes a contact portion for contacting the pointing object to the user to input a position or operation command; A sensor unit disposed on one surface of the contact unit and provided with a plurality of force sensors on the substrate for outputting a detection signal for an action force applied by the pointing object; And a protection unit provided under the sensor unit to allow the plurality of force sensors to have the same sensing performance, and the position and strength of the applied force using the sensor integrated touch input device and the sensor integrated touch input device. It is about how to measure simultaneously.

Sensor, Integrated, Touch Screen, Touch Pad, Force, Force, Position

Description

Touch inputting apparatus integral sensors

The present invention is a sensor-integrated touch input device, and more particularly, in a touch input device (eg, a touch screen or a touch pad) in which a user inputs an action or a position command using a pointing object (eg, a finger or an illustration tip). The sensor unit having a plurality of force sensors is integrally provided in the touch input device and forms a protection unit, thereby minimizing disturbance of the detection signal by equalizing the sensing performance of the plurality of force sensors. In addition, the present invention relates to a method for simultaneously acquiring the position and the strength of the working force by using a sensor-integrated touch input device.

Humans interface with electromechanical devices in a variety of applications. Thus, there is a constant interest in interfaces that are more natural, easy to use, and capable of providing information. Among the devices that interface with the user, a touch input device that applies an operation or position command by a touch method is a touch screen or a laptop used in various electronic / communication devices such as an automated teller machine in a bank, a personal portable information terminal, a mobile phone, and the like. And a touch pad used.

A conventional touch input device detects only a position where a pointing object touches, and an electronic / communication device in which the touch input device is used executes a change in the position of a cursor or a program.

Such a conventional touch input device has a limitation in detecting only a position in terms of obtaining contact information that is gradually increasing in various industries such as electronic / communication devices. Thus, the development of a device capable of obtaining not only the position of the pointing object but also information on the strength of the applied force applied by the pointing object has been required.

Therefore, when a predetermined action force is applied to the touch input device by a pointing object, various sensors are attached to a touch screen or a touch pad to detect the strength of the action force, or a touch screen made of a force sensor. There is this. In this case, it is required to attach to the screen display device using a double-sided tape or the like. At this time, there was a problem that the degree of adhesion of the sensor is changed depending on the degree of adhesion and processing of the double-sided tape in terms of mass production. This causes distortion of the signal in detecting the strength of the working force, so there is a limit in detecting the strength of the working force.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to equally express the sensing function of a plurality of force sensors included in the touch input device, to obtain the position and strength of the working force The purpose is to provide a touch input device with a minimum error.

In addition, the present invention provides a touch input device capable of detecting not only a position applied by a pointing object but also an intensity of an acting force, and a method of acquiring a position and intensity of an acting force.

In addition, it is not necessary to add a means for acquiring a contact position of a pointing object in a conventional touch input device (for example, a touch screen), and thus, a manufacturing cost is reduced.

Sensor integrated touch input device according to the present invention for achieving the above object is a contact for the user to contact the pointing object to input the position or operation command;

A sensor unit disposed on one surface of the contact unit and provided with a plurality of force sensors on the substrate for outputting a detection signal for an action force applied by the pointing object; And

And a protection unit provided under the sensor unit so that the plurality of force sensors have the same sensing performance.

Also, a plurality of force sensors may be arranged around the edge of the substrate.

In addition, the contact portion and the sensor portion may be combined with a double sided tape, a UV curing agent or a thermal adhesive tape.

The sensor unit and the protective unit are fastened by the first adhesive layer.

At this time, the first adhesive layer may be configured in the same form as the arrangement state of the plurality of force sensors.

In addition, a plurality of holes may be formed in the first adhesive layer, and bumps may be provided in the holes.

In addition, the rigidity of the bump can be configured to be larger than the rigidity of the first adhesive layer.

The force sensor may be a force sensor of a membrane type, a force sensor of a contact resistance type, or a force sensor of a capacitance type.

In addition, the substrate may be a flexible circuit board.

And, the contact portion may be configured in a circle, oval or polygon.

In addition, the contact portion and the protective portion may be made of a transparent material of glass or acrylic.

And, the protection unit may be configured in the same form as the contact portion or the same state as the arrangement of the force sensor.

The other side of the protection unit may further include a screen display unit for displaying a screen state according to the location or operation command of the user.

In addition, the protection unit and the screen display unit may be connected by the second adhesive layer, and the second adhesive layer may be configured in the same form as the arrangement state of the plurality of force sensors.

As another embodiment for achieving the above object, the sensor-integrated touch input device includes a contact unit for contacting the pointing object in order for the user to input a position or operation command; A first structure including a plurality of first electrode portions formed on one surface of the contact portion;

A protection unit; A second structure including a plurality of second electrode parts formed on one surface of the protection part and provided at positions facing the first electrode parts; And

And a first adhesive layer for coupling the contact portion and the protection portion so that the first electrode portion and the second electrode portion face each other.

The first electrode portion and the second electrode portion are preferably formed around the edges of the contact portion and the protection portion, respectively.

In addition, the contact portion and the protective portion are transparent materials of glass or acrylic.

A plurality of holes may be formed at a position where the first electrode part and the second electrode part are provided in the first adhesive layer.

In addition, an air gap is preferably formed between the first electrode portion and the second electrode portion.

The second structure may further include a screen display unit configured to display a screen state according to the position or operation command of the user.

In addition, the second structure and the screen display unit may be coupled by a second adhesive layer.

The first adhesive layer may use a double-sided tape or a polymer adhesive.

Moreover, a double sided tape or a polymer adhesive can also be used for a 2nd adhesive layer.

In order to achieve the above object, a method of acquiring an intensity and a position of an acting force using a sensor-integrated touch input device includes calculating an intensity of an acting force based on detection signals of a plurality of force sensors;

Calculating a moment of an acting force by calculating a sum of moments of each of the plurality of force sensors; And

Calculating a position of the acting force from the moment of the acting force and the intensity of the acting force.

At this time, the detection signal may be a reaction force against the action force.

According to the sensor integrated touch input device of the present invention, the sensor unit including a plurality of force sensors is integrated into the touch input device, and the protection unit is formed so that the quality of the touch input device is uniform. In obtaining the intensity, the error can be minimized.

In addition, by integrating and including a sensor unit including a plurality of force sensors in the touch input device, not only the strength of the applied force applied by the pointing object but also the position of the applied force can be detected simultaneously.

In addition, by processing the position to which the action force is applied using a plurality of force sensors, there is no need to add means for acquiring the contact position of the pointing object in a conventional touch input device (for example, a touch screen). Can be reduced.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to describing the present invention, if it is determined that a detailed description of related known functions and configurations may unnecessarily obscure the subject matter of the present invention, the description thereof will be omitted.

< Sensor integrated type  Configuration of Touch Input Device>

(Example 1)

1 to 3 show the configuration of the first embodiment of the sensor-integrated touch input device of the present invention. The integrated sensor type touch input device of the present invention includes a contact unit 110, a sensor unit 120, a protection unit 140, a screen display unit 160, and the like.

The contact unit 110 is a member that contacts the pointing object to input a position or an operation command. The touch input device of the present invention can be utilized in the form of a touch screen, and in this case, a screen display unit 160 for providing a predetermined screen to the user is added. Therefore, the contact portion 110 is preferably composed of a transparent material. Glass or acrylic may be used as an example of the contact unit 110. In addition, the contact unit 110 may be made of a flexible material.

In addition, in the case of a touch screen having a conventional ITO film, the contact portion 110 of the present invention is limited to a quadrangular shape, the contact portion 110 of the present invention can be manufactured in various forms such as a polygon, including a circle, oval or triangle, a rectangle, and the like. Can be.

)에 대한 신호를 검출한다. 힘센서(122)로는 멤브레인 방식을 갖는 힘센서와, 정전용량방식의 힘센서, 접촉저항 방식의 힘센서 등이 사용될 수 있다.The sensor unit 120 is positioned on one surface of the contact unit 110, and is coupled to the contact unit 110 using a double-sided tape, a UV curing agent, or a thermal adhesive tape. 1 illustrates a coupling to the bottom of the contact unit 110. The sensor unit 120 includes a substrate 124 and a plurality of force sensors 122 included in the substrate 124. As the present invention, the integrated sensor type touch input device may be used as a touch screen. As illustrated in FIG. 3, a plurality of force sensors 122 may be provided around the edge of the substrate 124. The force sensors 122 are applied to the action force applied by the pointing object.

Detects a signal for As the force sensor 122, a force sensor having a membrane type, a force sensor of a capacitive type, a force sensor of a contact resistance type, or the like may be used.

A flexible printed circuit board (FPCB) may be used as the substrate 124 provided with the plurality of force sensors 122.

)에 관한 소정의 신호를 검출하는 복수개의 힘센서(122)들의 센싱기능이 동일하게 형성되도록 한다. 보호부(140)가 구비되지 않은 경우로 센서부(120)와 화면표시부(160)가 직접 폼 테이프 등으로 결합된다면, 제작상의 오차로 인하여 센서부(120)에 포함된 복수개의 힘센서는 결합정도의 차이가 발생한다. 이러한 결합의 정도 차이로 인하여, 작용힘(

)의 인가시 각각의 힘센서는 동일한 센싱기능을 발휘하지 못하고, 신호의 왜란이 발생한다. 즉, 더 강하게 결합된 힘센서(122)는 그렇지 못한 힘센서(122)에 비하여 민감성이 커지고 검출신호에 왜란의 발생정도가 심해질 수 있다. 보호부(140)는 복수개의 힘센서(122)의 결합의 정도를 동일하게 하여, 이러한 문제를 해결한다. 또한 외부물질이나 자극으로부터 센서부(120)를 보호하는 기능을 한다. 본 발명인 터치입력장치를 터치스크린 등에 활용가능한바, 보호부(140)도 투명한 재질로 구성함이 바람직하다. 보호부(140)의 일예로 유리 또는 아크릴이 사용될 수 있다. 또한, 보호부(140)의 하부는 평평하고 소정의 강성을 갖아, 터치입력장치가 사용되는 전자/통신 기기의 케이스에 결합이 용이하거나, 터치입력장치가 터치스크린에 활용되는 경우에 화면표시부(160)와의 결합이 용이하도록 함이 바람직하다.The protection unit 140 is provided at the lower portion of the sensor unit 120 and acts (

Sensing function of the plurality of force sensors 122 for detecting a predetermined signal with respect to the) is equally formed. If the sensor unit 120 and the screen display unit 160 are not directly provided with a foam tape or the like, when the protection unit 140 is not provided, the plurality of force sensors included in the sensor unit 120 are coupled to each other due to manufacturing errors. Difference occurs. Due to this difference in the degree of coupling,

), Each force sensor does not exhibit the same sensing function, and signal distortion occurs. That is, the more strongly coupled force sensor 122 may be more sensitive than the force sensor 122 that is not, and the degree of disturbance in the detection signal may be increased. The protection unit 140 solves this problem by making the coupling degree of the plurality of force sensors 122 the same. It also functions to protect the sensor unit 120 from foreign substances or stimuli. Bar of the present invention can be utilized in the touch screen, bar, etc., the protection unit 140 is also preferably composed of a transparent material. Glass or acrylic may be used as an example of the protective part 140. In addition, the lower portion of the protection unit 140 is flat and has a predetermined rigidity, so that it is easy to be coupled to the case of the electronic / communication device in which the touch input device is used, or when the touch input device is utilized in the touch screen, It is preferable to facilitate the coupling with 160).

As shown in FIG. 3, the protection part 140 may have the same shape as the contact part 110 and may be configured in the same way as the arrangement of the plurality of force sensors 122.

The sensor unit 120 and the protection unit 140 are coupled by the first adhesive layer 132, and the first adhesive layer 132 basically functions as a buffer at the same time as the adhesive. As an example of the first adhesive layer 132, a double-sided tape (eg, double-sided tape, polymer tape), silicone, polyurethane adhesive such as polyurethane may be used. The first adhesive layer 132 is preferably the same shape as the arrangement of the plurality of force sensors 122 of the sensor unit 120.

In addition, a plurality of holes may be formed in the first adhesive layer 132, and bumps 134 may be provided in the plurality of holes, respectively. In this case, the plurality of holes and the plurality of bumps 134 may be formed at positions corresponding to the plurality of force sensors 122. The rigidity of the bump 134 is preferably greater than that of the first adhesive layer 132. The bump 134 serves to increase the sensing function of the force sensors 122 for sensing the force applied by the user.

The screen display unit 160 is provided on one surface of the protection unit 140. 1 to 3 illustrate a state in which the screen display unit 160 is provided under the protection unit 140. The screen display unit 160 is a member for visually expressing a position or a result of an operation command input by the user through the contact unit 110. An LCD panel may be used as an example of the screen display unit 160. As the liquid crystal panel, an LCD panel, an electronic ink panel, an OLED panel, or the like may be used.

The protection unit 140 and the screen display unit 160 may be coupled by the second adhesive layer 152. Like the first adhesive layer 132, the second adhesive layer 152 may be configured in the same shape as that of the plurality of force sensors 122, and may be a double-sided tape (for example, a double-sided tape or a polymer tape), silicone, or poly. Adhesives of polymers such as urethane can be used.

(Example 2)

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 4 to 5. The sensor integrated touch input device according to the present invention includes a first structure 210, a second structure 220, a first adhesive layer 232, and the like.

The first structure 210 includes a contact portion 212 and a plurality of first electrode portions 214 formed on one surface of the contact portion 212. The contact unit 212 is a member for contacting a pointing object by a user to input a position or an operation command. When the touch input device is used for a touch screen, the display unit 250 is further added, and thus the contact unit 212 is made of a transparent material. It is preferable to use as. Glass or acrylic may be used as the transparent material. The first electrode part 214 is formed on one surface of the contact part 212, and a plurality of first electrode parts 214 are spaced apart by a predetermined interval. The first electrode part 214 may be formed of a resistive ink, a resistive paste, or the like.

The second structure 220 includes a protection part 222 and a plurality of second electrode parts 224 formed on one surface of the protection part 222. A plurality of second electrode portions 224 are formed on one surface of the protection portion 222 spaced apart by a predetermined interval. The second electrode part 224 may be made of resistive ink, resistive paste, or the like. The first structure 210 and the second structure 220 are bonded so that the second electrode portion 224 and the first electrode portion 214 face each other. Therefore, the second electrode part 224 should be formed at a position opposite to the first electrode part 214. Embodiments, features, and the like of the protection unit 222 are the same as those of the first embodiment described above, and thus, the descriptions thereof are replaced with the above descriptions.

)에 대한 신호를 검출하기 위하여, 제1전극부(214)와 제2전극부(224) 상에는 제1접창층(232)이 구비되지 않음이 바람직하다. The first adhesive layer 232 couples the first structure 210 and the second structure 220. In this case, it is preferable that a plurality of holes are formed at a position where the first electrode part 214 and the second electrode part 224 are provided in the first adhesive layer 232. That is, the action force of the pointing object (

In order to detect a signal for X), it is preferable that the first contact layer 232 is not provided on the first electrode part 214 and the second electrode part 224.

The thickness of the first adhesive layer 232 is greater than the sum of the thicknesses of the first electrode part 214 and the second electrode part 224, and as shown in FIG. 4, the first electrode part 214 and the first electrode part 214 are formed. Preferably, the air gap G is formed between the two electrode portions 224. Properties and examples of the first adhesive layer 232 can be configured in the same manner as in the case of the first embodiment described above, and replaced with the above description.

The screen display unit 250 is coupled to one surface of the second structure 220. As shown in FIG. 4 and FIG. 5, it is preferable to be bonded by the second adhesive layer 242. The screen display unit 250 and the second adhesive layer 242 are also configurable in the same manner as in the first embodiment, and are replaced with the preceding substrate.

Also in this embodiment, a touch input device can be used for the touch screen. In this case, the first electrode portion 214 and the second electrode portion 224 are preferably formed around the edge as in the case of the first embodiment.

< Sensor integrated type  Fabrication of Touch Input Device>

A first embodiment of a sensor-integrated touch input device according to the present invention, as described in the configuration described with reference to Figures 1 to 3, the contact portion 110, the sensor portion 120 and the protective portion 140 by bonding the connection When the sensor integrated touch input device is used for the touch screen, the screen display unit 160 is further coupled to one surface of the protection unit 140. Using the first adhesive layer 132 and the second adhesive layer 152 to fabricate the sensor-integrated touch input device of the present invention is replaced with the preceding substrate.

Hereinafter, referring to FIGS. 6A to 6G and 7A to 7D, when the force sensor 122 of the sensor unit 120 is a contact resistance type force sensor and a capacitive type force sensor, Describe the detailed composition and production.

(Sensor unit with contact resistance type force sensor)

6a to 6g illustrate a state according to the fabrication of the sensor unit 120 is provided with a force sensor of the contact resistance method. The sensor unit 120 is manufactured such that the plurality of force sensors 122 are provided on the substrate 124, and preferably, the plurality of force sensors 122 are provided around the edge. As shown in FIG. 6B, a metal layer 304 is deposited on one surface of the film layer 302. The film layer 302 may use a polymer film such as a polyimide film or a polyester film. The metal layer 304 may use a metallic paste, and silver paste may be used as an example of the metallic paste. As shown in FIG. 6C, the resistive layer 306 is formed by coating a plurality of resistive inks at predetermined intervals on the metal layer 304. In this way an upper layer is formed.

6E, the metal layer 304 ′ may be deposited on another film layer 302 ′, but a plurality of metal layers 304 ′ may be formed to be spaced apart by a predetermined interval. Thereafter, as shown in FIG. 6F, the resistive ink is coated on the metal layer 304 ′ spaced by a predetermined interval to form the resistive layer 306 ′. In this way, the lower layer is formed.

As illustrated in FIG. 6G, the upper layer part and the lower layer part thus manufactured constitute the sensor part 120 using the adhesive layer 310. In this case, the adhesive layer 310 is not formed between the upper resistance layer 306 and the lower resistance layer 306 ′. In addition, a signal line for detecting a signal change between the resistance layers 306 and 306 'is wired in the sensor unit 120, and the wiring is obvious to those skilled in the art, and thus a detailed description thereof will be omitted.

(Sensor section with capacitive force sensor)

7A to 7D illustrate a detailed configuration and manufacturing state of the sensor unit 120 provided with the capacitive force sensor. The sensor unit 120 including the capacitive force sensor is manufactured by bonding at least two structures. The process of manufacturing the structure is as follows.

As shown in FIG. 7B, a plurality of electrode layers 404 are formed on one surface of the film layer 402. The film layer 402 may use a polymer film such as a polyimide film or a polyester film. The electrode layers 404 are formed in plural numbers spaced apart by a predetermined interval. In this way at least two structures are fabricated.

 One of the structures fabricated in this manner is selected to form a spacer 406, as shown in FIG. 7C. The spacer is provided on the film layer 402 on which the electrode layer 404 is not formed, and a double-sided tape or various films may be used as the spacer 406.

After the spacer 406 is formed, the spacer 406 is bonded to the rest of the structure, which is not formed, as shown in FIG. 7D. The adhesion may be by double-sided tape or adhesive. In this case, in order to detect a change in capacitance between the electrode layers 404 of each structure, an adhesive material such as a double-sided tape or an adhesive is not provided between the electrode layers 404.

The sensor unit 120 has wired signal lines for detecting signal changes between the electrode layers 404, and the wire lines are obvious to those skilled in the art, and thus detailed descriptions thereof will be omitted.

< Sensor integrated type  Touch input device Working  How to Obtain Strength and Location>

Hereinafter, a method of obtaining the strength and position of the working force by using the sensor integrated touch input device will be described.

)이 인가된 경우, 각 힘센서(122)의 반응을 도시한 개념도이다. 작용힘의 세기 및 위치를 획득하는 방법은 본 발명인 센서일체형 터치입력장치에 더 포함된 신호처리부(500)에서 담당할 수 있다. 신호처리부(500)는 작용힘 계산부(510), 모멘트 계산부(520)와 위치 계산부(530)로 구성된다. 도 10에서, 좌표계의 0점은 신호처리부(500)에 미리 소정의 위치로 설정되어 있을 수 있다. 이하에서 n은 힘센서의 개수를 나타낸다.8 is a block diagram showing a signal processing flow for acquiring the strength and position of the acting force, and FIG. 9 is a flowchart of a method of acquiring the strength and position of the acting force using the sensor-integrated touch input device of the present invention. 10 is a working force on the sensor-integrated touch input device (

Is a conceptual diagram showing the response of each force sensor 122, if applied. The method for acquiring the strength and position of the applied force may be performed by the signal processor 500 further included in the sensor-integrated touch input device. The signal processor 500 is composed of an action force calculator 510, a moment calculator 520, and a position calculator 530. In FIG. 10, the zero point of the coordinate system may be set to a predetermined position in the signal processing unit 500 in advance. In the following, n represents the number of force sensors.

)이 인가되면(S100), 복수개의 힘센서(122) 각각에서는 작용힘(

)에 관한 검출신호가 발생한다(S200). 검출신호의 일예로 도 10에 도시된 바와 같이, 각각의 힘센서(122)에서의 반력(

)이 발생할 수 있다. 즉, 각각의 힘센서(122)에서는

,…,

,…,

의 반력이 생긴다. As shown in FIG. 10, the action force (in any position P of the contact portion 110)

) Is applied (S100), in each of the plurality of force sensors 122 acting force (

A detection signal is generated (S200). As an example of the detection signal, as shown in FIG. 10, the reaction force at each force sensor 122 (

) May occur. That is, in each force sensor 122

,… ,

,… ,

Of reaction occurs.

)에 기초하여 다음의 [수학식 1]의 관계를 이용하여, 작용힘(

)의 세기를 계산한다(S300).The actuation force calculation unit 520 detects the detection signal detected by each force sensor 122, that is, each reaction force (

On the basis of the following equation.

Calculate the strength of the (S300).

)를 산출하고, 각각의 힘센서의 위치와 반력을 계산하여, 각각의 힘센서당 모멘트(

)의 합을 구한다. 각각의 힘센서당 모멘트(

)의 합이 작용힘의 모멘트(

)가 된다(S400). 즉, 작용힘의 모멘트(

)는 다음의 [수학식 2]와 같다.Then, in the moment calculation unit 520, as shown in Figure 10, the position of each force sensor 122 spaced by a predetermined distance in the coordinate system (

) And calculate the position and reaction force of each force sensor,

) Is summed. Moment for each force sensor (

) Is the sum of moments of force

(S400). That is, the moment of action force (

) Is shown in Equation 2 below.

)와 작용힘(

)의 세기에 기초하여, 작용힘의 인가위치(

)를 다음의 [수학식 3]을 이용하여 계산한다(S500).Finally, the position calculation unit 530, the moment of the acting force (

) And working force (

On the basis of the intensity of

) Is calculated using the following [Equation 3] (S500).

)의 세기와 작용힘의 인가 위치(

)정보를 동시에 획득할 수 있다. 따라서, 작용힘의 위치를 획득하기 위하여 종래에 사용하던 ITO 막을 별도로 구비할 필요가 없게 된다.As described above, based on the detection signals of the plurality of force sensors 122, the action force (

) And the applied position of the applied force (

Information can be obtained at the same time. Therefore, it is not necessary to separately provide the ITO membrane conventionally used to obtain the position of the working force.

)이 z축 방향으로 인가되는 경우를 설명한다. 도 11은 접촉부(110)의 형상이 직사각형인 경우이다. 접촉부(110)의 세로길이를 a로 하고, 가로길이를 b로 한다.Hereinafter, a case in which four force sensors 122 are provided will be described with reference to FIG. 11. For convenience of description, only the plurality of force sensors 122 of the contact unit 110 and the sensor unit 120 are illustrated.

) Is applied in the z-axis direction. 11 illustrates a case in which the shape of the contact portion 110 is rectangular. The vertical length of the contact portion 110 is a, and the horizontal length is b.

)은 센서부(120)에 형성된 4개의 힘센서(122)에서의 검출신호(예, 반력)로 검출되어, 작용힘 계산부(510)에서는 검출신호에 기초하여 작용힘의 세기(

)를 계산한다. 작용힘의 세기(

)는 앞서 기재한 [수학식 1]의 관계에 기초하므로, 다음의 [수학식 4]와 같은 관계가 성립된다.Applied force applied by the pointing object (

) Is detected by the detection signals (for example, reaction force) from the four force sensors 122 formed in the sensor unit 120, the operating force calculation unit 510 based on the strength of the operating force (

Calculate Strength of working force (

) Is based on the relationship of [Equation 1] described above, the following relationship is established.

)를 계산한다. 그 각 힘센서당 모멘트의 합은 다음의 [수학식 5]과 같이 표현할 수 있다.The moment calculation unit 520 is based on the above-described Equation 2, the moment in each force sensor 122 (

Calculate The sum of the moments for each force sensor can be expressed as Equation 5 below.

이므로, 앞서 기재한 [수학식 3]에 기초하여 인가된 작용힘의 위치를 구하면

이고,

가 된다.Thereafter, the position calculation unit 520 calculates the position of the acting force based on the strength of the acting force and the moment of the acting force. In the case of Figure 11, the position of the action force is

Since, based on Equation 3 described above to obtain the position of the applied force

ego,

Becomes

이고, 작용힘의 세기(

)는

가 된다.That is, the position of the working force

, The strength of the force

)

Becomes

< Variant >

In another embodiment of the present invention, the sensor integrated touch input device has been described above in the case where the touch screen is used. However, the present invention provides a sensor integrated touch input device in which an electronic device inputs an operation or position command by a touch method. Ramen can be used in various ways. For example, it may be used in a touch pad. In this case, in the first and second embodiments, the contact portion and the protection portion may be composed of opaque members. If the width of the contact portion in the first embodiment and the first and second contact portions in the second embodiment is narrow, it can be utilized as a scroll pad of a touch pad method.

In addition, in the description of a method of measuring the position and intensity of the working force using the integrated sensor type touch input device of the present invention, the case of the sensor integrated touch input device of the first embodiment is illustrated, but the sensor integrated touch of the second embodiment is illustrated. Of course, the case also applies to the input device. In this case, the signal processing unit 500 may also be provided in the sensor-integrated touch input device of the second embodiment.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as long as they fall within the spirit of the invention.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention, and therefore, the present invention is limited only to the matters described in the drawings. It should not be interpreted.

1 is a side cross-sectional view of a first embodiment of a sensor-integrated touch input device according to the present invention;

2 is an exploded side view of a first embodiment of a sensor-integrated touch input device according to the present invention;

3 is an exploded perspective view of a first embodiment of a sensor-integrated touch input device according to the present invention;

4 is a side cross-sectional view of a second embodiment of a sensor-integrated touch input device according to the present invention;

5 is an exploded side view of a second embodiment of a sensor-integrated touch input device according to the present invention;

6a to 6g is a state diagram according to the manufacturing process of the sensor unit when the contact resistance type force sensors are included,

7a to 7d is a state diagram according to the manufacturing process of the sensor unit when the capacitive force sensors are included,

8 is a block diagram showing a flow for obtaining the strength and position of the applied force;

9 is a flow chart of the method of obtaining the strength and position of the working force using the present invention, the sensor integrated touch input device;

10 and 11 are conceptual views illustrating the reaction of each sensor when an action force is applied to the integrated sensor input device of the present invention.

<Description of the symbols for the main parts of the drawings>

110, 212: contact portion 120: sensor portion

122: force sensor 124: substrate

132 and 232: first adhesive layer 134: bump

140, 222: protection part 152, 242: second adhesive layer

160, 250: screen display unit 210: first structure

214: first electrode portion 220: second structure

224: second electrode portion 302, 302 ′, 402: film layer

304, 304 ', 404: electrode layer 306, 306': resistive layer

310: adhesive layer 406: spacer

500: signal processing unit 510: working force calculation unit

520: moment calculation unit 530: position calculation unit

Claims (25)

A contact portion for contacting a pointing object by a user to input a position or an operation command; A sensor unit disposed on one surface of the contact unit and provided with a plurality of force sensors on a substrate to output a detection signal for an action force applied by the pointing object; And And a protection unit provided under the sensor unit to allow the plurality of force sensors to have the same sensing performance. The method of claim 1, And the plurality of force sensors are arranged around an edge of the substrate. The method of claim 1, And the contact part and the sensor part are combined with a double-sided tape, a UV curing agent, or a thermal adhesive tape. The method of claim 1, The sensor unit and the protection unit, the sensor integrated touch input device, characterized in that coupled by the first adhesive layer. The method of claim 4, wherein The first adhesive layer is a sensor integrated touch input device, characterized in that the same shape as the arrangement of the plurality of force sensors. The method of claim 4, wherein And a plurality of holes are formed in the first adhesive layer, and the holes are provided with bumps. The method of claim 6, The sensor integrated touch input device, characterized in that the rigidity of the bump is greater than the rigidity of the first adhesive layer. The method of claim 1, The force sensor is a sensor-integrated touch input device, characterized in that the force sensor of the membrane type, the force sensor of the contact resistance method or the force sensor of the capacitance method. The method of claim 1, The sensor integrated touch input device, characterized in that the flexible circuit board. The method of claim 1, The sensor unit type touch input device, characterized in that the circular, elliptical or polygonal. The method of claim 1, The sensor unit integrated touch input device, wherein the contact part and the protection part are made of glass or acrylic transparent material. The method of claim 1, The protection unit is a sensor-integrated touch input device, characterized in that the same form as the contact portion or the same state as the arrangement of the force sensor. The method of claim 1, The other surface of the protection unit, the sensor integrated touch input device further comprises; a screen display unit for showing the screen state according to the position or operation command of the user. The method of claim 13, The protective unit and the screen display unit is connected by a second adhesive layer, and the second adhesive layer is a sensor integrated touch input device, characterized in that the same shape as the arrangement of the plurality of force sensors. A contact portion for contacting the pointing object by the user to input a position or an operation command; A first structure including a plurality of first electrode portions formed on one surface of the contact portion; A protection unit; A second structure including a plurality of second electrode parts formed on one surface of the protection part and provided at positions facing the first electrode part; And And a first adhesive layer that couples the contact part and the protection part so that the first electrode part and the second electrode part face each other. The method of claim 15, And the first electrode portion and the second electrode portion are formed around edges of the contact portion and the protection portion, respectively. The method of claim 15, The sensor unit integrated touch input device, wherein the contact part and the protection part are made of glass or acrylic transparent material. The method of claim 15, Sensor integrated touch input device, characterized in that a plurality of holes are formed in the position where the first electrode portion and the second electrode portion of the first adhesive layer is provided. The method of claim 15, The sensor integrated touch input device, wherein an air gap is formed between the first electrode part and the second electrode part. The method of claim 15, And a screen display unit which displays a screen state according to the position or operation command of the user on one surface of the second structure. The method of claim 20, And the second structure and the screen display unit are coupled by a second adhesive layer. The method according to claim 4 or 15, The first adhesive layer is a sensor-integrated touch input device, characterized in that the double-sided tape or polymer adhesive. The method of claim 14 or 21, The second adhesive layer is a sensor-integrated touch input device, characterized in that the double-sided tape or polymer adhesive. delete delete

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