KR20100074820A - Touch screen panel and method of manufacturing the same - Google Patents

Touch screen panel and method of manufacturing the same Download PDF

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Publication number
KR20100074820A
KR20100074820A KR1020080133346A KR20080133346A KR20100074820A KR 20100074820 A KR20100074820 A KR 20100074820A KR 1020080133346 A KR1020080133346 A KR 1020080133346A KR 20080133346 A KR20080133346 A KR 20080133346A KR 20100074820 A KR20100074820 A KR 20100074820A
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KR
South Korea
Prior art keywords
touch
substrate
vibration
spacer
touch sensor
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KR1020080133346A
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Korean (ko)
Inventor
김억수
최재영
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삼성전자주식회사
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Priority to KR1020080133346A priority Critical patent/KR20100074820A/en
Publication of KR20100074820A publication Critical patent/KR20100074820A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • 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
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors

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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)
  • Mechanical Engineering (AREA)
  • Position Input By Displaying (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE: A vibration touch screen panel and a manufacturing method are provided to sense change of electrostatic capacity through a plurality of scan lines and a plurality of sensing lines and recognize touch input and generate vibration in touch area partially. CONSTITUTION: A first substrate(110) and a second substrate(120) face with each other. A touch sensor unit(160) is formed between the first substrate and the second substrate. If touch input is generated, the touch sensor unit senses the external touch input through contract with signal line. A vibration generator(180) is formed between the first substrate and the second substrate. If the outside touch input is generated, the vibration generator generates vibration in the touch area.

Description

Touch screen panel and method of manufacturing the same

Embodiments of the present invention relate to a vibrating touch screen panel integrated in a liquid crystal display and a method of manufacturing the same.

The touch screen panel is installed in front of a display of an electronic device such as a personal computer, a notebook computer, a portable media player (PMP), and the like, and touches or draws a character or a picture by using a finger or a pen. One of the input devices that can input specific commands or data.

The touch screen panel is used in a state of being attached to the front of a display device, for example, a completed liquid crystal display (LCD), or in an integrated state of the liquid crystal display.

When the touch screen panel is attached to the front of the liquid crystal display and used, the overall thickness of the display device is increased, and a separate module assembly operation is required.

In the case of manufacturing the touch screen panel integrated with the liquid crystal display device, the overall thickness of the display device can be reduced, which is advantageous in thinning, and there is no separate module assembling work, thereby improving productivity. However, in the case of a touch screen panel integrated with a conventional liquid crystal display device, it is difficult to recognize multi-touch as a kind of resistive touch sensor, and sensing each of X and Y on the lower substrate to read coordinates in the X and Y directions. Since the lines must be formed, the aperture ratio of the display device can be lowered.

An embodiment of the present invention provides a touch screen panel integrated with a liquid crystal display and a method of manufacturing the same.

Embodiments of the present invention provide a touch screen panel and a method of manufacturing the same, which are integrated in a liquid crystal display device, and allow a user to feel a tactile sense by partially vibrating the touched area when the user touches.

The vibrating touch screen panel according to the exemplary embodiment of the present invention is formed between the first and second substrates facing each other with the liquid crystal interposed therebetween, and if there is an external touch input, the vibrating touch screen panel contacts the signal line. A touch sensor unit sensing an external touch input; And a vibration generating unit formed between the first substrate and the second substrate, the vibration generating unit generating vibration in the touched area when there is an external touch input.

In one embodiment of the present invention, the touch sensor unit includes a contact pad and a touch sensor spacer disposed to face each other at a predetermined interval, and if there is an external touch input, the contact pad and the touch sensor spacer contact the external A touch input can be detected.

In example embodiments, the touch sensor unit may be disposed on the first substrate, and disposed on the plurality of first touch signal lines and the second substrate that extend in parallel in a first direction. It may include a plurality of second touch signal lines extending side by side in the crossing second direction.

In example embodiments, the first touch signal lines and the second touch signal lines may be one of scan lines or sensing lines.

In one embodiment of the present invention, the sensing lines are driven at the same time, the scan line may be driven sequentially with a parallax.

In an exemplary embodiment, a black matrix made of a conductive material may be formed on the second substrate, and part of the black matrix may be used as the second touch signal lines.

In an embodiment, the vibration generator includes a back gate and a piezoelectric material vibration spacer disposed to face each other at a predetermined interval, and when the external touch input is present, the backgate and the piezoelectric material vibration spacer may contact each other. have.

In one embodiment of the present invention, one side of the vibration spacer is connected to the common electrode, the voltage of the common electrode which is an alternating voltage is applied, the other side of the vibration spacer is in contact with the back gate when there is an external touch input gate A voltage may be applied and a volume change may occur due to a difference in voltage applied to the vibration spacer, thereby causing vibration in the touched region.

According to another aspect of the present invention, there is provided a method of manufacturing a vibrating touch screen panel, including forming a first signal line, a contact pad, and a back gate on a first substrate, forming a black matrix of a conductive material on a second substrate, Forming spacers for touch sensors corresponding to the contact pads in the black matrix area, forming piezoelectric material vibration spacers corresponding to the back gates in the black matrix area, and forming the contact pads and the touch sensor. And bonding the first substrate and the second substrate to face each other so that a gap is formed between the spacer and the back gates and the piezoelectric material vibration spacers, respectively.

The forming of the plurality of touch sensor spacers may include forming a color filter on the second substrate and the black matrix, and patterning the color filter to partially form the black matrix. Forming an opening for exposing the light; forming a column portion of the spacer for the touch sensor on a surface of the black matrix exposed through the opening; transparent conductivity on the surface of the color filter and the surface of the column portion of the spacer for the touch sensor. Depositing a material to form a common electrode on the surface of the Kali filter, forming a conductive film of the touch sensor spacer on a surface of the column portion of the touch sensor spacer, and removing the conductive material of the opening region to remove the common electrode And insulating the electrode from the conductive layer.

The forming of the plurality of piezoelectric material vibration spacers may include forming a common electrode on a surface of the color filter, and then forming the plurality of piezoelectric material vibration spacers on the common electrode. Can be.

According to an exemplary embodiment of the present invention, a touch input may be recognized by sensing a change in capacitance through a plurality of scan lines and a plurality of sensing lines, and a touch may be felt by partially vibrating the touched area.

According to an exemplary embodiment of the present invention, the multi-touch can be recognized by detecting a change in capacitance by a scan method of sequentially driving a plurality of scan lines.

According to an embodiment of the present invention, the touch sensor unit and the vibration generating unit are formed in the black matrix area formed on the upper substrate, and a separate additional sensing line is formed by using the black matrix formed on the upper substrate as the sensing line of the touch sensor. There is no need to integrate the vibrating touch screen panel with the liquid crystal display without reducing the aperture ratio of the display device.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above problems will be described. At this time, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, by which the technical spirit of the present invention and its core configuration and operation is not limited.

1 is a cross-sectional view showing a vibrating touch screen panel according to an embodiment of the present invention.

Referring to FIG. 1, a vibrating touch screen panel according to an exemplary embodiment of the present invention includes a first substrate 310 and a second substrate 320 facing each other with a liquid crystal interposed therebetween, and between the first and second substrates. The touch sensor unit 160 is disposed, and the vibration generating unit 180 is disposed between the first substrate and the second substrate and spaced apart from the touch sensor unit.

The first substrate 310 and the second substrate 320 may be a transparent glass substrate or a polymer substrate.

On the first substrate 310, that is, the lower substrate, a plurality of thin film transistors 340, which are switching elements, are arranged in a matrix form. Each of the plurality of thin film transistors 340 includes a gate electrode 341 formed on the lower substrate 310, an insulating film 342 formed on the gate electrode 341, and a source electrode 345 formed on the insulating film 342. ) And the drain electrode 346. An active layer 343 that forms a channel between the source electrode 345 and the drain electrode 346 between the insulating layer 342, the source electrode 345, and the drain electrode 346, and the active layer 343 and the source electrode. An ohmic contact layer 344 for ohmic contact with the 345 and the drain electrode 346 may be disposed. The plurality of thin film transistors 340 are covered by a protective layer 362. The protective layer 362 may be made of a dielectric material to form a capacitor of the touch sensor 160, as described below.

In addition, a plurality of gate lines and a plurality of data lines intersect each other on the lower substrate 310. The plurality of gate lines may extend in a first direction, for example, the X-axis direction, and the plurality of data lines may extend in a second direction orthogonal to the first direction, for example, the Y-axis direction. The plurality of gate lines are formed on the lower substrate 310 to be connected to the gate electrode 341 and covered by the insulating layer 342. The plurality of data lines are formed on the insulating layer 342 to be connected to the source electrode 345 and covered by the protective layer 362. That is, the plurality of gate lines and the plurality of data lines are formed to cross each other with the insulating film 342 interposed therebetween, and the plurality of thin film transistors 340 are formed at each intersection of the plurality of gate lines and the plurality of data lines. . In addition, a plurality of pixel electrodes 347 corresponding to each pixel are formed on the passivation layer 362, and the plurality of pixel electrodes 347 are respectively connected to the plurality of drain electrodes 346 through contact holes. . The plurality of pixel electrodes 347 may be made of a transparent conductive material.

The black substrate 352, the color filter 354, and the common electrode 356 are formed on the second substrate 320, that is, the upper substrate. The black matrix 352 is made of an opaque material to prevent light leakage and is disposed between the pixels and extends in a second direction, that is, in the Y-axis direction. The color filter 354 has a color of red (R), green (G), and blue (B) corresponding to each pixel. The common electrode 356 is made of a transparent conductive material and is formed on the surface of the color filter 354.

A support spacer (not shown) is disposed between the lower substrate 310 and the upper substrate 320 to maintain a cell gap. The support spacer (not shown) may be formed on the upper substrate 320 that is flat and simple in structure compared to the lower substrate 310. In this case, after forming a support spacer (not shown) on the surface of the color filter 354, the common electrode 356 is formed on the surface of the color filter 354 and the surface of the support spacer (not shown). Can be.

When a scan signal is applied to the gate line and an image signal is applied to the data line, the pixel corresponding to the intersection area is selected. At this time, the thin film transistor 340 of the selected pixel is turned on so that an electric field is formed between the pixel electrode 347 and the common electrode 356, thereby causing the molecular arrangement of the liquid crystal 330 in the region to be reduced. The transmittance of the incident light is changed. The light transmitted through the liquid crystal 330 is colored by the R, G, and B color filters 354 and emitted to the front of the touch screen panel.

The touch sensor unit 160 includes a contact pad and a touch sensor spacer disposed to face each other at a predetermined interval, and when there is an external touch input, the touch pad and the touch sensor spacer contact each other to recognize an external touch input.

The touch sensor unit according to an embodiment of the present invention may be a capacitive touch sensor, and is disposed between the lower substrate 310 and the upper substrate 320. The touch sensor 160 may include a plurality of touch sensor spacers 165 electrically connected to the plurality of first touch signal lines 161, the plurality of second touch signal lines 168, and the plurality of second touch signal lines 168. ) And a plurality of contact pads 163 disposed to face each of the plurality of touch sensor spacers 165 at predetermined intervals.

The first touch signal lines 161 and the contact pads 163 are disposed on the lower substrate 310. The first touch signal lines 161 are formed on the lower substrate 310 by the same conductive material as the gate lines and the gate electrodes 341, and are covered by the insulating layer 342 and the protective layer 362. The first touch signal lines 161 extend in parallel to the black matrix 352 disposed on the upper substrate 320, that is, in the X-axis direction. The first touch signal lines 161 may extend side by side in the same direction as the gate line. An arrangement interval of the first touch signal lines 161 may be set to an appropriate value according to the resolution of the touch sensor 160. That is, one first touch signal line 161 may be provided corresponding to each of the gate lines, or one first touch signal line 161 may be provided for every several data lines.

The contact pad 163 is formed on the protective layer 362 formed on the lower substrate 310. The contact pad 163 may be made of the same conductive material as the pixel electrode 347. The contact pad 163 may be disposed above the first touch signal line 161 and disposed at positions corresponding to the spacers 165 for touch sensors to be described later. Therefore, a capacitor having a structure in which a protective layer 362 made of a dielectric material is interposed between the conductive first touch signal line 161 and the conductive contact pad 163 can be formed.

The second touch signal lines and the spacers 165 for the touch sensor are disposed on the upper substrate 320. As the second touch signal lines, a part of the black matrix 352 extending in parallel to the first touch signal lines 161 disposed on the lower substrate 310, that is, extending in the Y-axis direction may be used. . To this end, the black matrix 352 may be made of a material having electrical conductivity, for example, a metal material such as chromium or a metal oxide, or a mixture thereof. Insulation between the black matrix 352 and the common electrode 356 used as the second touch signal line may be formed by the color filter 354, or between the black matrix 352 and the common electrode 356. A separate insulating film can be added. The black matrix 352 may extend not only in the Y-axis direction but also in the X-axis direction. In this case, the black matrix 352 used as the second touch signal line is insulated from the portion extending in the X-axis direction.

The touch sensor spacers 165 are disposed to be electrically connected to the second touch signal lines. To this end, the touch sensor spacers 165 are formed on the surface of the black matrix 352 used as the second touch signal lines. The touch sensor spacers 165 are disposed to correspond to the contact pads 163 provided on the lower substrate 310, respectively. Each of the touch sensor spacers 165 may include a column portion 166 and a conductive layer 167 formed on a surface of the column portion 166. The conductive layer 167 may be made of the same conductive material as the common electrode 356 and may be electrically connected to the black matrix 352. In addition, an opening 169 is formed around each of the touch sensor spacers 165, and the opening 169 may be insulated between the conductive layer 167 and the common electrode 356. In addition, due to the opening 169, the touch sensor spacers 165 have a slightly lower height than the support spacers (not shown), and thus the touch sensor spacers 165 and the contact pads. A predetermined gap may be formed between the 163.

The first touch signal lines 161 disposed on the lower substrate 310 and the second touch signal lines disposed on the upper substrate 320 are used as scan lines and sensing lines of the touch sensor 160. For example, the first touch signal lines 161 may be used as scan lines, the second touch signal lines may be used as sensing lines, and vice versa. When the second touch signal lines are used as the sensing line, the sensing circuit 190 may be connected to the black matrix 352 used as the second touch signal lines as shown in FIG. 3.

The vibration generator 180 includes a backgate 182 and a piezoelectric material vibration spacer 181 disposed to face each other at a predetermined interval, and when the external touch input is present, the backgate 182 and the piezoelectric material vibration spacer are By contacting, vibration can be generated.

The vibration generating unit according to the embodiment of the present invention is connected to the common electrode at one side (for example, the upper substrate 320 side), and the voltage of the common electrode is applied, and the other side of the vibration spacer (for example, the lower substrate 310). Side), if there is an external touch input, the gate voltage may be applied by contacting the back gate.

When there is an external touch input, the piezoelectric material vibrating spacer 181 and the back gate 182 which are separated by a predetermined interval come into contact with each other, so that the voltage of the common electrode and the gate voltage are simultaneously applied and the applied voltage magnitude. Due to the difference in volume occurs a vibration occurs.

The plurality of vibration generating units 180 according to the embodiment of the present invention are disposed spaced apart at predetermined intervals, and only the piezoelectric material vibration spacers of the vibration generating unit 180 in the region where the user touches are in contact with the corresponding back gate. Therefore, vibration may occur only in the touched area.

The back gate 182 may be an electrode to which a general voltage is applied or may be a gate electrode to which a gate voltage is applied. That is, the gate signal of the gate electrode 341 of the display device may be applied or a separate voltage signal may be applied. When the pixel electrode is formed, the pixel electrode may be simultaneously formed, and may be connected to the gate electrode through the contact hole (171 of FIGS. 6A to 6C) to enter the gate signal.

FIG. 2A illustrates a cross section of the vibrating touch screen panel when there is no external touch, and FIG. 2B illustrates a cross section of the vibrating touch screen panel when there is an external touch.

Referring to FIG. 2A, when there is no external touch, the touch spacer 165 of the touch sensor unit 160 and the contact pad 163 are spaced apart at predetermined intervals, and the piezoelectric material vibration spacer of the vibration generating unit 180 ( 181 and the back gate 182 are also spaced apart at predetermined intervals.

Referring to FIG. 2B, when there is an external touch, that is, when a pressure is applied to the surface of the upper substrate 320, the contact pad having the spacer 165 for the touch sensor is disposed on the lower substrate while the upper substrate 320 is deformed. 163). Accordingly, the capacitance between the contact pad 163 and the first touch signal line 161 is changed, the change of the capacitance is sensed by the sensing circuit 190, thereby adjusting the touch position in the X-axis and Y-axis directions. Can be recognized.

In addition, when pressure is applied to the surface of the upper substrate 320, the piezoelectric material vibration spacer 181 contacts the back gate 182 disposed on the lower substrate while the upper substrate 320 is deformed. Accordingly, different voltage signals are applied to the upper and lower portions of the vibration spacer 181, respectively. For example, the voltage of the common electrode may be applied to the upper portion, and the gate voltage may be applied to the lower portion. That is, when there is no external touch, a voltage is applied to only one side of the vibration spacer so that the voltage is not sensed, and when the external touch is present, the voltage is sensed by contacting the electrode of the lower substrate. An alternating voltage is applied to the piezoelectric material vibration spacer 181. At this time, the volume change is caused by the difference between the voltage of the common electrode and the gate voltage and hertz, which are simultaneously applied, and the user can feel the vibration.

3 and 4 are diagrams for describing an exemplary embodiment of a touch sensing method in the touch screen panel illustrated in FIG. 1. Hereinafter, the first touch signal lines are used as scan lines and the second touch signal lines are used as sensing lines.

Referring to FIG. 3 and FIG. 4, first, a signal is applied to the Yn scan line 161 and the sensing lines 168 are simultaneously driven to sense a change in capacitance through the [Xn] sensing circuit 170. do. Then, the touch position and the touch position of the Yn scan line 161 can be known. Next, a signal is applied to the Yn + 1 scan line 161 and the sensing lines 168 are simultaneously driven to sense a change in capacitance through the [Xn + 1] sensing circuit 170. Then, it is possible to know whether the touch is performed on the Yn + 1 scan line 161 and the touch position. In this way, when the plurality of scan lines 161 are sequentially driven with a certain parallax, whether or not a touch is detected on each scan line 161 and a touch position can be detected, thereby enabling multi-touch to be recognized.

As described above, the touch screen panel according to the exemplary embodiment of the present invention may include a plurality of scan lines 161 formed on the lower substrate 310 and a plurality of sensing lines 168 formed on the upper substrate 320. The multi-touch can be recognized by detecting a change in capacitance, but by detecting the change in capacitance by a scan method of sequentially driving the plurality of scan lines 161.

FIG. 5 illustrates an embodiment of a waveform of a common signal applied to the vibration generator and a waveform of a backgate signal applied to the backgate according to an exemplary embodiment of the present invention.

In the line inversion scheme, 0V and 5V are alternately applied to the common electrode at a constant hertz. When the gate voltage is on, a voltage of 15 to 20 V is applied, but a voltage of -5 to 10 V is applied in most cases.

Therefore, when the vibration spacer and the back gate of the vibration generating unit are in contact, a voltage of a different size is applied to the vibration spacer at the same time, and the piezoelectric material used as the vibration spacer causes a volume change due to the voltage difference and the hertz of the common electrode. Feel vibration in the touched area.

Hereinafter, a method of manufacturing a touch screen panel having the above configuration will be described.

6A through 6C are diagrams for describing a method of forming components on the first substrate illustrated in FIG. 1.

First, referring to FIG. 6A, the lower substrate 310 is prepared. As the lower substrate 310, a transparent glass substrate or a polymer substrate may be used. After the conductive metal material is deposited on the prepared lower substrate 310, the conductive metal material is patterned to form the gate electrode 341 of the thin film transistor 160 and the first touch signal line 161 of the touch sensor 160. The conductive metal material may include, for example, chromium, aluminum, molybdenum, silver or alloys thereof. As described above, the first touch signal line 161 may be a scan line. In this case, a gate line 148 of FIG. 2 connected to the gate electrode 341 may also be formed. The first touch signal line 161 and the gate line may be formed to extend in the same direction, for example, in the X-axis direction. Subsequently, an insulating layer 342 is formed on the lower substrate 310 to cover the first touch signal line 161, the gate line, and the gate electrode 341.

Next, referring to FIG. 6B, an active layer 343 and an ohmic contact layer 344 are formed on the insulating layer 342. Subsequently, the conductive metal material is deposited and then patterned to form the source electrode 345 and the drain electrode 346 of the thin film transistor 340. The conductive metal material may include, for example, chromium, aluminum, molybdenum, silver or alloys thereof. In this case, a data line 149 of FIG. 2 connected to the source electrode 345 may also be formed. The data line may be formed to extend in a direction crossing the gate line, for example, in the Y-axis direction. A protective layer 362 is formed on the lower substrate 310 to cover the thin film transistor 340, the data line 149, and the insulating layer 342. The protective layer 362 may be made of a dielectric material to form a capacitor of the touch sensor 160. Next, a contact hole 171 exposing the drain electrode 346 is formed in the protective layer 362.

Next, referring to FIG. 6C, a transparent conductive material such as indium tin oxide (ITO), aluminum zinc oxide (AZO), or indium zinc oxide (IZO) is deposited on the protective layer 362, and then patterned. The pixel electrode 347 connected to the drain electrode 346 through the contact hole 171, the contact pad 163 of the touch sensor 160, and the back gate 182 of the vibration generator are formed together. In this case, the contact pad 163 may be formed above the first touch signal line 161, and the back gate 182 may be formed above the gate electrode 341.

7A to 7C are diagrams for describing a method of forming components on the second substrate illustrated in FIG. 1.

First, referring to FIG. 7A, the upper substrate 320 is prepared. As the upper substrate 320, a polymer substrate that is transparent and has excellent flexibility and elasticity may be used. A conductive material such as a metal material such as chromium, a metal oxide, or a mixture thereof is deposited on the prepared upper substrate 320 and then patterned to form a black matrix 352. The black matrix 352 may be formed to extend in a direction crossing the first touch signal line 161 formed on the lower substrate 310, for example, in the Y-axis direction. As described above, some of the conductive black matrix 352 may be used as the second touch signal line 168 of the touch sensor 160, and the second touch signal line 168 may be a sensing line. Subsequently, a color filter 354 having a color of red (R), green (G), and blue (B) is formed on the upper substrate 320 to cover the black matrix 352.

Next, referring to FIG. 7B, the color filter 354 is patterned to form an opening 169 that partially exposes the black matrix 352 used as the second touch signal line 168. Subsequently, a support spacer (not shown) is formed on the surface of the color filter 354, and the column portion 166 of the spacer 165 for the touch sensor is exposed on the surface of the black matrix 352 exposed through the opening 169. ) At the same time. At this time, even if the column portion 166 of the support spacer (not shown) and the touch sensor spacer 165 are formed at the same time, the touch sensor spacer 165 is formed due to the opening 169 formed in the color filter 354. The column portion 166 may be formed at a slightly lower height than the support spacer (not shown). Therefore, a predetermined gap may be formed between the touch sensor spacer 165 formed on the upper substrate 320 and the contact pad 163 formed on the lower substrate 310.

Next, referring to FIG. 7C, a transparent conductive material such as indium tin oxide (ITO), aluminum zinc oxide (AZO), or indium zinc oxide (IZO) is deposited on the entire surface of the structure shown in FIG. The common electrode 356 on the surface of the filter 354 and the conductive film 167 on the surface of the column portion 166 are formed. At this time, the conductive material in the opening 169 is removed to insulate the common electrode 356 and the conductive layer 167. Then, the touch sensor spacer 165 is formed of the column part 166 and the conductive layer 167 electrically connected to the black matrix 352 used as the second touch signal line 168.

Meanwhile, after the common electrode 356 is formed on the surface of the color filter 354, the piezoelectric material vibration spacer 181 is generated. The vibration spacer 181 is formed at a position corresponding to the back gate 182 of the lower substrate.

Next, after bonding the lower substrate 310 illustrated in FIG. 6C and the upper substrate 320 illustrated in FIG. 7C to face each other, the liquid crystal 330 is disposed in a space between the lower substrate 310 and the upper substrate 320. ), A touch screen panel as shown in FIG. 1 can be manufactured.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is a cross-sectional view showing a vibrating touch screen panel according to an embodiment of the present invention.

FIG. 2A illustrates a cross section of the vibrating touch screen panel when there is no external touch, and FIG. 2B illustrates a cross section of the vibrating touch screen panel when there is an external touch.

3 and 4 are diagrams for describing an exemplary embodiment of a touch sensing method in the touch screen panel illustrated in FIG. 1.

FIG. 5 illustrates an embodiment of a waveform of a common signal applied to the vibration generator and a waveform of a backgate signal applied to the backgate according to an exemplary embodiment of the present invention.

6A through 6C are diagrams for describing a method of forming components on the first substrate illustrated in FIG. 1.

7A to 7C are diagrams for describing a method of forming components on the second substrate illustrated in FIG. 1.

Claims (10)

A first substrate and a second substrate facing each other with the liquid crystal interposed therebetween; A touch sensor unit formed between the first substrate and the second substrate and contacting a signal line to detect an external touch input when there is an external touch input; And And a vibration generating unit formed between the first substrate and the second substrate and generating a vibration in the touched area when there is an external touch input. The method of claim 1, wherein the touch sensor unit A contact pad and a touch sensor spacer disposed to face each other at a predetermined interval; And an external touch input to detect an external touch input by contacting the contact pad and the spacer for the touch sensor. The method of claim 1, wherein the touch sensor unit A first touch signal line disposed on the first substrate and formed in a first direction; And And a second touch signal line disposed on the second substrate and formed in a second direction crossing the first direction. The method of claim 3, The first touch signal lines and the second touch signal lines are one of scan lines or sensing lines, The sensing lines are driven simultaneously, And the scan line is sequentially driven with a parallax. The method of claim 3, And a black matrix made of a conductive material on the second substrate, and part of the black matrix is used as the second touch signal lines. The method of claim 1, The vibration generator includes a back gate and a piezoelectric material vibration spacer disposed to face each other at a predetermined interval, And an external touch input, wherein the backgate and the piezoelectric material vibration spacer are in contact with each other. The method of claim 6, One side of the vibration spacer is connected to the common electrode, and a voltage of the common electrode, which is an alternating voltage, is applied. The other side of the vibration spacer contacts the back gate when an external touch input is applied, and a gate voltage is applied to the vibration spacer. Vibration touch screen panel, characterized in that the volume change occurs by the applied voltage signal to generate vibration in the touched area. Forming a first signal line, a contact pad, and a back gate on the first substrate; Forming a black matrix of a conductive material on the second substrate; Forming spacers for touch sensors corresponding to the contact pads in the black matrix area, respectively; Forming piezoelectric material vibration spacers corresponding to the back gates in the black matrix region, respectively; And Bonding the first substrate and the second substrate to face each other such that a gap is formed between the contact pad and the touch sensor spacer, the back gates, and the piezoelectric material vibration spacers, respectively. Method of manufacturing a vibrating touch screen panel. The method of claim 8, Forming the spacer for the touch sensor, Forming a color filter on the second substrate and the black matrix; Patterning the color filter to form an opening that partially exposes the black matrix; Forming a column portion of the spacer for the touch sensor on a surface of the black matrix exposed through the opening; By depositing a transparent conductive material on the surface of the color filter and the surface of the column portion of the touch sensor spacer to form a common electrode on the surface of the kali filter, the touch sensor spacer on the surface of the column portion of the touch sensor spacer Forming a conductive film; And And removing the conductive material from the opening to insulate the common electrode and the conductive layer. The method of claim 9, Forming the piezoelectric material vibration spacers, And after forming a common electrode on the surface of the color filter, forming the piezoelectric material vibration spacers on the common electrode.
KR1020080133346A 2008-12-24 2008-12-24 Touch screen panel and method of manufacturing the same KR20100074820A (en)

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KR20150120020A (en) * 2014-04-16 2015-10-27 한국표준과학연구원 Method for operating smart door lock device based on force technology and method for detecting intrusion using smart mat device based on force technology
CN105373246A (en) * 2014-08-29 2016-03-02 宝宸（厦门）光学科技有限公司 Touch panel
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KR20140006703A (en) * 2012-06-29 2014-01-16 삼성디스플레이 주식회사 Haptic display device
US10679538B2 (en) 2012-06-29 2020-06-09 Samsung Display Co., Ltd. Haptic display device
KR20150084229A (en) * 2014-01-13 2015-07-22 삼성디스플레이 주식회사 Organic light emitting diode display device and manufacturing method thereof
US9318539B2 (en) 2014-01-13 2016-04-19 Samsung Display Co., Ltd. Organic light emitting diode display device and manufacturing method thereof
KR20150120019A (en) * 2014-04-16 2015-10-27 한국표준과학연구원 Smart door lock device based on force technology and system for detecting intrusion using smart mat device based on force technology
KR20150120020A (en) * 2014-04-16 2015-10-27 한국표준과학연구원 Method for operating smart door lock device based on force technology and method for detecting intrusion using smart mat device based on force technology
CN105373246A (en) * 2014-08-29 2016-03-02 宝宸（厦门）光学科技有限公司 Touch panel
CN105373246B (en) * 2014-08-29 2018-08-14 宝宸（厦门）光学科技有限公司 Touch panel
KR20190068925A (en) * 2017-12-11 2019-06-19 엘지디스플레이 주식회사 Display apparatus

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