KR20180113958A - Touch input device - Google Patents

Abstract

According to an embodiment, a touch input device includes: a cover layer having a display region and an input region included in the display region; a display panel disposed below the display region; a display PCB disposed below the display panel; a fingerprint recognition sensor disposed under the input region, recognizing a fingerprint inputted to the input region and electrically connected to the display PCB; and a pressure sensor disposed under the display panel, disposed adjacent to the fingerprint sensor and electrically connected to the display PCB. The touch input device detects the magnitude of the pressure of a touch inputted to the input region from electrical characteristics output from the pressure sensor when a predetermined touch is inputted to the input region.

Description

A touch input device {TOUCH INPUT DEVICE}

The present invention relates to a pressure sensing unit and a touch input device including the touch sensing unit. More particularly, the present invention relates to a pressure sensing unit capable of sensing a magnitude of a pressure applied to an input area of a touch input device using a pressure sensor To a touch input device.

Various types of input devices are used for the operation of the computing system. For example, an input device such as a button, a key, a joystick, and a touch screen is used. Due to the easy and simple operation of the touch screen, the use of the touch screen in the operation of the computing system is increasing.

The touch screen may include a transparent panel having a touch-sensitive surface and a touch sensor as a touch input means. Such a touch sensor may be attached to the front of the display screen such that the touch-sensitive surface covers the visible side of the display screen. The user simply touches the touch screen with a finger or the like so that the user can operate the computing system. Generally, a computing system is able to recognize touch and touch locations on a touch screen and interpret the touch to perform operations accordingly.

In such a touch input device, there is an input function that is disposed in an input area such as a home key or the like and performs a corresponding function according to the magnitude of the pressure. Since a separate physical pressure sensor must be provided for such an input function, There is a problem that the size of the touch input device can not be reduced due to a separate pressure sensor. Further, when a pressure electrode using a change in capacitance, rather than a physical pressure sensor, is disposed, it is difficult to detect a proper pressure value by a circuit disposed under the input region.

An object of the present invention is to provide a touch input device capable of detecting the magnitude of a pressure applied to an input region using a pressure sensor disposed at a position adjacent to an input region.

A touch input device according to an embodiment includes: a cover layer having a display area and an input area included in the display area; A display panel disposed below the display area; A display PCB disposed below the display panel; A fingerprint recognition sensor disposed under the input area and recognizing a fingerprint input to the input area and electrically connected to the display PCB; And a pressure sensor disposed under the display panel and disposed adjacent to the fingerprint sensor and electrically connected to the display PCB. When a predetermined touch is input to the input area, And detects the magnitude of the pressure of the touch input to the input region from the electrical characteristics.

A touch input device according to an embodiment includes: a cover layer having a display area and an input area included in the display area; A display panel disposed below the display area; A touch PCB disposed under the display panel; A fingerprint recognition sensor disposed under the input region and recognizing a fingerprint inputted to the input region and electrically connected to the touch PCB; And a pressure sensor disposed under the display panel and disposed adjacent to the fingerprint sensor and electrically connected to the touch PCB. When a predetermined touch is input to the input area, And detects the magnitude of the pressure of the touch input to the input region from the electrical characteristics.

According to an embodiment of the present invention, an object of the present invention is to provide a touch input device capable of detecting a magnitude of a pressure applied to an input region using a pressure sensor disposed at a position adjacent to an input region.

1A and 1B are schematic diagrams of a capacitive touch sensor included in a touch input device according to an embodiment of the present invention and a configuration thereof for operation thereof.
FIG. 2 illustrates a control block for controlling a touch position, a touch pressure, and a display operation in the touch input device according to the embodiment of the present invention.
3A and 3B are conceptual diagrams for explaining a configuration of a display module in a touch input device according to an embodiment of the present invention.
4A is a perspective view of a touch input device according to an embodiment of the present invention.
4B to 4E are plan views of a touch input device according to an embodiment of the present invention.
5A to 5H are views of a touch input device according to an embodiment of the present invention in which a pressure sensing part is disposed, from below.
6A to 6E, 7A to 7J, and 8 are cross-sectional views of the touch input device BB 'of FIG. 4A according to the embodiment of the present invention.
FIGS. 9A and 9B are cross-sectional views of a touch input device according to an embodiment of the present invention, as shown in FIGS. 5C and 8, when a pressure is applied.
FIG. 9C is a cross-sectional view of the touch input device according to the embodiment of the present invention shown in FIG. 5D when pressure is applied.
FIGS. 10A and 10B are views showing warpage of the display panel when pressure is applied to the touch input device according to the embodiment of the present invention shown in FIGS. 5C and 8B.
11A, 11B and 11D to 11G are sectional views taken along the line AA 'of the touch input device according to the embodiment of the present invention shown in FIG. 4A.
11C is an exploded perspective view of a touch input device according to an embodiment of the present invention.
12 illustrates a cross section of a sensor sheet according to an embodiment of the present invention
13A to 13C are cross-sectional views illustrating an embodiment of a pressure sensor formed directly on various display panels of a touch input device according to an embodiment of the present invention.
FIGS. 14A to 14D are views illustrating a form of a sensor included in the touch input device according to the embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Hereinafter, a capacitive touch sensor 10 is exemplified, but a touch sensor 10 capable of detecting a touch position in an arbitrary manner can be applied.

FIG. 1A is a schematic diagram of a touch sensor 10 of a capacitive type included in a touch input device according to an embodiment of the present invention and a configuration thereof for operation thereof. 1A, the touch sensor 10 includes a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm. The touch sensor 10 includes a plurality of driving electrodes And a plurality of receiving electrodes RX1 to RXm for receiving a sensing signal including information on a capacitance change amount that changes in accordance with a touch on a touch surface, And a sensing unit 11 for sensing a touch position.

As shown in FIG. 1A, the touch sensor 10 may include a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm. 1A, a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm of the touch sensor 10 are shown as an orthogonal array. However, the present invention is not limited to this, The electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm can have any number of dimensions including the diagonal, concentric and three-dimensional random arrangement, and the like and their application arrangements. Here, n and m are positive integers and may be the same or different from each other, and the size may be changed according to the embodiment.

The plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be arranged to cross each other. The driving electrode TX includes a plurality of driving electrodes TX1 to TXn extending in a first axis direction and a receiving electrode RX includes a plurality of receiving electrodes extending in a second axis direction intersecting the first axis direction RX1 to RXm).

14A and 14B, in the touch sensor 10 according to the embodiment of the present invention, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm are formed in the same layer . For example, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed on a top surface of a display panel 200A to be described later.

Also, as shown in FIG. 14C, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed in different layers. For example, one of the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed on the upper surface of the display panel 200A and the other may be formed on the lower surface of the cover, (200A).

A plurality of drive electrodes (TX1 to TXn) and a plurality of receiving electrodes (RX1 to RXm) is a transparent conductive material (e.g., tin oxide (SnO ₂₎ and indium oxide _{(In 2 O 3) ITO (} Indium Tin made of such Oxide) or ATO (antimony tin oxide)). However, this is merely an example, and the driving electrode TX and the receiving electrode RX may be formed of another transparent conductive material or an opaque conductive material. For example, the driving electrode TX and the receiving electrode RX may include at least one of silver ink, copper, nano silver, and carbon nanotube (CNT) . In addition, the driving electrode TX and the receiving electrode RX may be realized by a metal mesh.

The driving unit 12 according to the embodiment of the present invention can apply a driving signal to the driving electrodes TX1 to TXn. In an embodiment of the present invention, the driving signal may be sequentially applied to one driving electrode at a time from the first driving electrode TX1 to the nth driving electrode TXn. This application of the driving signal can be repeated again. This is merely an example, and driving signals may be simultaneously applied to a plurality of driving electrodes according to an embodiment.

The sensing unit 11 acquires information on the electrostatic capacitance Cm generated between the driving electrodes TX1 to TXn and the receiving electrodes RX1 to RXm to which the driving signal is applied through the receiving electrodes RX1 to RXm And the touch position and the touch position can be detected by receiving the sensing signal. For example, the sensing signal may be a signal in which a driving signal applied to the driving electrode TX is coupled by a capacitance Cm: 14 generated between the driving electrode TX and the receiving electrode RX. The process of sensing the driving signal applied from the first driving electrode TX1 to the nth driving electrode TXn through the receiving electrodes RX1 to RXm may be referred to as scanning the touch sensor 10 .

For example, the sensing unit 11 may include a receiver (not shown) connected to each of the reception electrodes RX1 to RXm through a switch. The switch is turned on during a period of sensing the signal of the corresponding receiving electrode RX so that a sensing signal can be sensed from the receiving electrode RX at the receiver. The receiver may be comprised of an amplifier (not shown) and a feedback capacitor coupled between the negative input of the amplifier and the output of the amplifier, i. E., The feedback path. At this time, the positive input terminal of the amplifier may be connected to the ground. In addition, the receiver may further include a reset switch connected in parallel with the feedback capacitor. The reset switch can reset the conversion from current to voltage performed by the receiver. A negative input terminal of the amplifier may be connected to the corresponding receiving electrode RX to receive a current signal including information on the capacitance Cm, and integrate the current signal to convert the voltage into a voltage. The sensing unit 11 may further include an analog-to-digital converter (ADC) for converting the integrated data to digital data through the receiver. The digital data may then be input to a processor (not shown) and processed to obtain touch information for the touch sensor 10. The sensing unit 11 may be configured to include an ADC and a processor together with a receiver.

The control unit 13 may perform a function of controlling the operation of the driving unit 12 and the sensing unit 11. For example, the controller 13 may generate a driving control signal and transmit the driving control signal to the driving unit 12 so that the driving signal is applied to the driving electrode TX predetermined at a predetermined time. The control unit 13 generates a sensing control signal and transmits the sensing control signal to the sensing unit 11 so that the sensing unit 11 receives a sensing signal from the sensing electrode RX previously set at a predetermined time to perform a predetermined function can do.

In FIG. 1A, the driving unit 12 and the sensing unit 11 may constitute a touch detection device (not shown) capable of detecting whether or not to touch the touch sensor 10 and a touch position. The touch detection apparatus may further include a control section (13). The touch detection device may be integrated on a touch sensing integrated circuit (IC) corresponding to the touch sensor controller 1100 to be described later in the touch input device including the touch sensor 10. The driving electrode TX and the receiving electrode RX included in the touch sensor 10 are included in the touch sensing IC through a conductive trace and / or a conductive pattern printed on a circuit board And may be connected to the driving unit 12 and the sensing unit 11. The touch sensing IC may be placed on a circuit board on which a conductive pattern is printed, such as a touch circuit board (hereinafter referred to as a touch PCB). According to the embodiment, the touch sensing IC may be mounted on a main board for operating the touch input device.

As described above, a capacitance Cm of a predetermined value is generated at each intersection of the driving electrode TX and the reception electrode RX. When an object such as a finger is close to the touch sensor 10, Can be changed. In FIG. 1A, the capacitance may represent mutual capacitance (Cm). The sensing unit 11 senses such electrical characteristics and can detect whether the touch sensor 10 is touched and / or touched. For example, it is possible to detect the touch and / or the position of the touch on the surface of the touch sensor 10 having the two-dimensional plane including the first axis and the second axis.

More specifically, the position of the touch in the second axial direction can be detected by detecting the drive electrode TX to which the drive signal is applied when a touch to the touch sensor 10 occurs. Likewise, the position of the touch in the first axis direction can be detected by detecting the capacitance change from the received signal received through the receiving electrode RX when touching the touch sensor 10.

In the above description, the operation of the touch sensor 10 for sensing the touch position has been described based on the amount of mutual capacitance change between the driving electrode TX and the receiving electrode RX, but the present invention is not limited to this. That is, as shown in FIG. 1B, it is also possible to sense the touch position based on the amount of change in self capacitance.

FIG. 1B is a schematic view for explaining still another capacitive touch sensor 10 included in the touch input device according to another embodiment of the present invention and its operation. A plurality of touch electrodes 30 are provided in the touch sensor 10 shown in FIG. The plurality of touch electrodes 30 may be arranged in a lattice pattern at regular intervals as shown in Fig. 14D, but the present invention is not limited thereto.

The drive control signal generated by the control unit 13 is transmitted to the drive unit 12 and the drive unit 12 applies a drive signal to the touch electrode 30 preset at a predetermined time based on the drive control signal. The sensing control signal generated by the control unit 13 is transmitted to the sensing unit 11. The sensing unit 11 senses the sensing signal from the touch electrode 30 preset at a predetermined time Receive input. At this time, the sensing signal may be a signal for the amount of change in self-capacitance formed on the touch electrode 30.

At this time, whether or not the touch sensor 10 is touched and / or the touch position is detected by the sensing signal sensed by the sensing unit 11. For example, since the coordinates of the touch electrode 30 are known in advance, it is possible to detect the touch of the object with respect to the surface of the touch sensor 10 and / or its position.

Although the driving unit 12 and the sensing unit 11 are divided into separate blocks for the sake of convenience, the operation of applying the driving signal to the touch electrode 30 and the sensing signal from the touch electrode 30 May be performed by one driving and sensing unit.

Although the capacitive touch sensor panel as the touch sensor 10 has been described in detail above, the touch sensor 10 for detecting whether or not the touch input device 1000 touches the touch input device 1000 according to the embodiment of the present invention A surface acoustic wave (SAW), an infrared (IR) system, an optical imaging system, a dispersion signal system, A dispersive signal technology, and an acoustic pulse recognition method.

FIG. 2 illustrates a control block for controlling a touch position, a touch pressure, and a display operation in the touch input device according to the embodiment of the present invention. In the touch input apparatus 1000 configured to detect the touch pressure in addition to the display function and the touch position detection, the control block includes a touch sensor controller 1100 for detecting the touch position, a display controller (not shown) for driving the display panel And a pressure sensor controller 1300 for detecting the pressure. The display controller 1200 receives input from a central processing unit (CPU) or an application processor (CPU), which is a central processing unit on the main board for operating the touch input apparatus 1000, And a control circuit for displaying desired contents. Such a control circuit can be mounted on a display circuit board (hereinafter referred to as a display PCB). Such a control circuit may include a display panel control IC, a graphic controller IC, and other circuits necessary for operation of the display panel 200A.

The pressure sensor controller 1300 for detecting the pressure through the pressure sensing unit may be configured similar to the touch sensor controller 1100 to operate similar to the touch sensor controller 1100. [ Specifically, the pressure sensor controller 1300 includes a driving unit, a sensing unit, and a control unit, as shown in FIGS. 1A and 1B, and can detect the magnitude of pressure by sensing signals sensed by the sensing unit. At this time, the pressure sensor controller 1300 may be mounted on the touch PCB on which the touch sensor controller 1100 is mounted or on the display PCB on which the display controller 1200 is mounted.

According to an embodiment, the touch sensor controller 1100, the display controller 1200, and the pressure sensor controller 1300 may be included in the touch input device 1000 as different components. For example, the touch sensor controller 1100, the display controller 1200, and the pressure sensor controller 1300 may be formed of different chips. At this time, the processor 1500 of the touch input apparatus 1000 may function as a host processor for the touch sensor controller 1100, the display controller 1200, and the pressure sensor controller 1300.

The touch input device 1000 according to the embodiment of the present invention may be applied to various devices such as a cell phone, a PDA (Personal Data Assistant), a smartphone, a tablet PC, an MP3 player, a notebook, An electronic device including the same display screen and / or a touch screen.

The touch sensor controller 1100, the display controller 1200, and the pressure sensor controller 1300, which are separately configured as described above, to make the touch input apparatus 1000 thin and light weight, May be integrated into one or more configurations in accordance with an embodiment. In addition, it is also possible that these respective controllers are integrated in the processor 1500. In addition, according to the embodiment, the touch sensor 10 and / or the pressure sensing unit may be incorporated in the display panel 200A.

The touch sensor 10 for detecting a touch position in the touch input apparatus 1000 according to the embodiment may be located outside or inside the display panel 200A. The display panel 200A of the touch input device 1000 according to the embodiment may be a display device including a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting diode (OLED) Display panel. Accordingly, the user can perform an input action by touching the touch surface while visually checking the screen displayed on the display panel.

3A and 3B are conceptual diagrams for explaining the configuration of the display module 200 in the touch input device 1000 according to the present invention. 3A, a configuration of a display module 200 including a display panel 200A using an LCD panel will be described.

3A, the display module 200 includes a display panel 200A as an LCD panel, a first polarizing layer 271 disposed on the display panel 200A, and a first polarizing layer 271 disposed below the display panel 200A. 2 polarizing layer 272 as shown in FIG. The display panel 200A as an LCD panel includes a liquid crystal layer 250 including a liquid crystal cell, a first substrate layer 261 disposed above the liquid crystal layer 250, and a liquid crystal layer 250, And a second substrate layer 262 disposed under the first substrate layer 262. In this case, the first substrate layer 261 may be a color filter glass, and the second substrate layer 262 may be a TFT glass. Also, at least one of the first substrate layer 261 and the second substrate layer 262 may be formed of a bendable material such as a plastic according to an embodiment. 3A, the second substrate layer 262 may include various layers including a data line, a gate line, a TFT, a common electrode (Vcom), and a pixel electrode. Lt; / RTI > These electrical components can operate to generate a controlled electric field to orient the liquid crystals located in the liquid crystal layer 250.

Next, the configuration of the display module 200 including the display panel 200A using the OLED panel will be described with reference to FIG. 3B.

As shown in FIG. 3B, the display module 200 may include a display panel 200A, which is an OLED panel, and a first polarizing layer 282, which is disposed on the display panel 200A. The display panel 200A as an OLED panel includes an organic layer 280 including an organic light emitting diode (OLED), a first substrate layer 281 disposed over the organic layer 280, And a second substrate layer 283 disposed thereon. At this time, the first substrate layer 281 may be an encapsulation glass, and the second substrate layer 283 may be a TFT glass. In addition, at least one of the first substrate layer 281 and the second substrate layer 283 may be formed of a bendable material such as a plastic. In the case of the OLED panel shown in FIGS. 3D to 3F, an electrode used for driving a display panel 200A such as a gate line, a data line, a first power supply line (ELVDD), a second power supply line (ELVSS) . OLED (Organic Light-Emitting Diode) panel is a self-luminous display panel that uses the principle that light is generated when electrons and holes are combined in an organic layer when current is applied to a fluorescent or phosphorescent organic thin film. Determine the color.

Specifically, OLEDs use the principle that an organic material emits light when an organic material is applied to glass or plastic and electricity is supplied. That is, when holes and electrons are injected into the anode and the cathode of the organic material, respectively, and then recombined with the light emitting layer, excitons having a high energy state are formed. When excitons fall into a state of low energy, energy is emitted, And to use the generated principle. At this time, the color of the light changes depending on the organic material of the light emitting layer.

In OLED, a line-driven PM-OLED (Passive-matrix Organic Light-Emitting Diode) and an AM-OLED (Active-matrix Organic Light-Emitting Diode) are used depending on the operation characteristics of the pixels constituting the pixel matrix exist. Since both of them do not require a backlight, the display module can be made very thin, the contrast ratio is constant according to the angle, and color reproducibility according to temperature is good. In addition, un-driven pixels are very economical in that they do not consume power.

In operation, the PM-OLED emits light only for a scanning time with a high current, and the AM-OLED maintains a light emission state for a frame time with a low current. Therefore, AM-OLED has better resolution than PM-OLED, it is advantageous to drive a large-area display panel and has low power consumption. In addition, since each element can be individually controlled by incorporating a thin film transistor (TFT), it is easy to realize a sophisticated screen.

The organic material layer 280 may include a hole injection layer (HIL), a hole transport layer (HTL), an emission layer (EIL), an electron transfer layer (ETL) (Electron Injection Layer, light emitting layer).

Briefly describing each layer, the HIL injects holes, and uses a material such as CuPc. The HTL functions to transfer injected holes, and mainly uses materials having good hole mobility. HTL may be arylamine, TPD, or the like. EIL and ETL are layers for electron injection and transport, and injected electrons and holes are combined in EML to emit light. EML is a material that expresses the emitted color, and is composed of a host that determines the lifetime of the organic material, and a dopant that determines color and efficiency. This is only a description of the basic structure of the organic material layer 280 included in the OLED panel, and the present invention is not limited to the layer structure or material of the organic material layer 280. [

The organic layer 280 is inserted between an anode (not shown) and a cathode (not shown). When the TFT is turned on, a driving current is applied to the anode to inject holes, Electrons are injected, and holes and electrons move to the organic material layer 280 to emit light.

It will be apparent to those skilled in the art that an LCD panel or an OLED panel may further include other configurations for performing the display function and may be modified.

The display module 200 of the touch input apparatus 1000 according to the present invention may include a structure for driving the display panel 200A and the display panel 200A. In detail, when the display panel 200A is an LCD panel, the display module 200 may include a backlight unit (not shown) disposed under the second polarizing layer 272, A display panel control IC, a graphic control IC, and other circuits for operation of the display panel.

The display module 200 of the touch input apparatus 1000 according to the present invention may include a structure for driving the display panel 200A and the display panel 200A. In detail, when the display panel 200A is an LCD panel, the display module 200 may include a backlight unit (not shown) disposed under the second polarizing layer 272, A display panel control IC, a graphic control IC, and other circuits for operation of the display panel.

The touch sensor 10 for detecting the touch position in the touch input apparatus 1000 according to the embodiment of the present invention may be located outside or inside the display module 200. [

In the case where the touch sensor 10 is disposed outside the display module 200 in the touch input device 1000, a touch sensor panel may be disposed above the display module 200, . The touch surface to the touch input device 1000 may be the surface of the touch sensor panel.

When the touch sensor 10 is disposed inside the display module 200 in the touch input device 1000, the touch sensor 10 may be configured to be located outside the display panel 200A. Specifically, the touch sensor 10 may be formed on the upper surfaces of the first substrate layers 261 and 281. At this time, the touch surface for the touch input device 1000 may be the upper surface or the lower surface in FIGS. 3A and 3B as an outer surface of the display module 200. [

In the case where the touch sensor 10 is disposed inside the display module 200 in the touch input device 1000, at least some of the touch sensors 10 are configured to be positioned in the display panel 200A, At least a remaining part of the display panel 10 may be configured to be located outside the display panel 200A. For example, any one of the driving electrode TX and the receiving electrode RX constituting the touch sensor 10 may be configured to be located outside the display panel 200A, and the remaining electrodes may be disposed inside the display panel 200A As shown in FIG. Specifically, any one of the driving electrode TX and the receiving electrode RX constituting the touch sensor 10 may be formed on the upper surface of the first substrate layers 261 and 281, and the remaining electrodes may be formed on the first substrate layer 261, 281) or on the upper surface of the second substrate layer 262, 283.

When the touch sensor 10 is disposed inside the display module 200 in the touch input device 1000, the touch sensor 10 may be positioned inside the display panel 200A. Specifically, the touch sensor 10 may be formed on the lower surface of the first substrate layers 261 and 281 or on the upper surfaces of the second substrate layers 262 and 283.

In the case where the touch sensor 10 is disposed inside the display panel 200A, an electrode for the touch sensor operation may be additionally arranged. However, various configurations and / or electrodes disposed inside the display panel 200A may perform touch sensing The touch sensor 10 may be used as a touch sensor. More specifically, when the display panel 200A is an LCD panel, at least one of the electrodes included in the touch sensor 10 is a data line, a gate line, a TFT, a common electrode (Vcom: common electrode and a pixel electrode. When the display panel 200A is an OLED panel, at least one of the electrodes included in the touch sensor 10 may include a data line, A gate line, a first power supply line ELVDD, and a second power supply line ELVSS.

At this time, the touch sensor 10 operates as the driving electrode and the receiving electrode described in FIG. 1A, and can detect the touch position according to the mutual capacitance between the driving electrode and the receiving electrode. Also, the touch sensor 10 may operate as the single electrode 30 described with reference to FIG. 1B to detect the touch position according to the self-capacitance of each of the single electrodes 30. In this case, when the electrode included in the touch sensor 10 is an electrode used for driving the display panel 200A, the display panel 200A is driven in the first time period, and the second time The touch position can be detected in the section.

The cover layer 100 formed with the touch sensor for detecting the touch position in the touch input device 1000 of the present invention and the display module 200 including the display panel 200A are bonded with an adhesive such as OCA (Optically Clear Adhesive) Lt; / RTI > Accordingly, display color clarity, visibility, and light transmittance of the display module 200 that can be confirmed through the touch surface of the touch sensor can be improved.

Hereinafter, in order to detect the magnitude of the touch pressure applied to the input area in the touch input device according to the embodiment of the present invention, a case where the sensor disposed at a position adjacent to the input area is used as the pressure sensing part will be described in detail .

4A is a perspective view of a touch input device according to an embodiment of the present invention, and FIGS. 4B through 4E are plan views of a touch input device according to an embodiment of the present invention.

4B to 4E, the touch input apparatus 1000 according to the present invention may include a display area 110 and an input area. At this time, the input area may be a home key 121, a speaker 122, a camera 123, a back key, a menu key, and the like. Specifically, the cover layer 100 included in the touch input device 1000 may include a display area 110 and an input area. In addition, the display panel 200A may be disposed under the display area 110 of the cover layer 100. FIG.

As shown in FIG. 4B, the touch input apparatus 1000 according to the present invention may further include a non-display area 120. Specifically, the cover layer 100 included in the touch input apparatus 1000 may include a display region 110 and a non-display region 120. The display panel 200A may be disposed under the display area 110 of the cover layer 100 and the display panel 200A may not be disposed below the non- . At this time, an input area can be placed in the non-display area 120. [

As shown in FIG. 4C, the touch input apparatus 1000 according to the present invention may include a touch position sensing area 130 and a non-touch position sensing area 140. At this time, the touch position sensing area 130 may be the same as or different from the display area 110. [ Likewise, the non-touch location sensing area 140 may be the same as or different from the non-display area 120. At this time, as shown in FIG. 4C, the touch position sensing area 130 may include the display area 110. More specifically, when the touch position sensing area 130 is the same as the display area 110, the touch sensor 10 for detecting the touch position may be disposed below the display area 110. Specifically, the touch sensor 10 may be integrally formed under the display region 110 of the cover layer 100 or may be included in the display panel 200 disposed below the display region 110. The touch sensor 10 for detecting the touch position may be disposed below the non-display area 120 of the cover layer 100 when the touch position sensing area 130 is different from the display area 110. [ Specifically, the touch sensor 10 may be integrally formed under the non-display area 110 of the cover layer 100. [

4D, an input area of the touch input device 1000 according to the present invention may be disposed in the display area 110. [ Also, as shown in FIG. 4E, the display area 110 may be disposed in the entire area of the touch input device 1000 according to the present invention. Specifically, the entire area of the cover layer 100 included in the touch input device 1000 may be the display area 110. At this time, similarly, the input area of the touch input device 1000 according to the present invention may be disposed in the display area 110. [

5A to 5H are views of a touch input device according to an embodiment of the present invention in which a pressure sensing part is disposed, from below. 5A to 5H illustrate the pressure sensor 450 of the pressure sensing unit disposed below the display panel 200A of the touch input device 1000 according to the present invention. 320 are removed from the lower side of the touch input device 1000.

6A to 6E, 7A to 7J, and 8 are cross-sectional views taken along the line B-B 'of the touch input device according to the embodiment of the present invention shown in FIG. 4A. 6A to 6E are cross-sectional views of the touch input device according to the embodiment of the present invention shown in FIG. 4A to which an OLED panel is applied as a display panel 200A, and FIGS. 7A to 7J show a display panel 200A 4A in which the LCD panel is applied, and FIG. 8 is a cross-sectional view of the touch input device 1000 shown in FIG. 4A having the pressure sensor shown in FIG. B-B '.

As shown in FIGS. 5A, 6A, 7A and 7B, the pressure sensing unit according to the present invention may be disposed in the display area 110. FIG. Specifically, the pressure sensor 450 included in the pressure sensing unit may be disposed at a position adjacent to the input area disposed in the non-display area 120 of the display area 110, and may be disposed below the display panel 200A have. In addition, the pressure sensor 450 may be integrally formed on the lower surface of the display panel 200A. 5F, the pressure sensor 450 may be electrically connected to the first PCB 160 through the trace 451 extending from the pressure sensor 450. [ Also, the trace 451 may be formed directly on the lower surface of the display panel 200A like the pressure sensor 450. [ Here, the first PCB 160 may be a touch PCB or a display PCB. In addition, the pressure sensor 450 may be electrically connected to the main board through the first connection part 170 formed in the first PCB 160. In addition, the touch input apparatus 1000 according to the present invention may further include a separate touch sensor for detecting whether a touch is input to an input region disposed in the non-display region 120. [ Specifically, it may further include a separate touch sensor (not shown) for detecting whether a touch is input to the hometown 121 shown in Figs. 5A, 5F, 6A and 7A. In this case, a separate touch sensor (not shown) may be a sensor that detects whether or not the user touches the touch panel, or may be a user authentication sensor that includes a function of authenticating the user. For example, a fingerprint recognition sensor. In this case, since the pressure sensor 450 is disposed only in a part of the display region 110, the magnitude of the pressure applied to the display region 110 is not detected and is applied to the input region disposed in the non- Only the magnitude of the applied pressure can be detected. 6A, when the OLED panel is applied as the display panel 200A, the pressure sensor 450 may be directly formed on the lower surface of the second substrate layer 283, and the touch input device 1000 May include a spacer layer 420 disposed between the pressure sensor 450 and the substrate 300. 7A and 7B, when the LCD panel is applied as the display panel 200A, the pressure sensor 450 can be directly formed on the lower surface of the second substrate layer 262 or the second polarizing layer 272 And the touch input apparatus 1000 according to the present invention may further include a backlight unit 200B disposed under the second polarizing layer 272. [ 7A, the touch input apparatus 1000 according to the present invention may include a spacer layer 420 disposed between the backlight unit 200B and the substrate 300, The touch input apparatus 1000 according to the present invention includes a touch screen 350 and a touch screen 350 disposed below the back light unit 200B and surrounding the display panel 200A and the back light unit 200B, And a spacer layer 420 disposed between the spacer layer 300 and the spacer layer 420. At this time, the backscatter 350 functions to protect the display panel 200A and the backlight unit 200B and can be fixed to the cover layer 100 or the display panel 200A.

5B, 6B, and 7C, the pressure sensing unit according to the present invention may be disposed in the display area 110 in the form of a sensor sheet 440. FIG. Specifically, the sensor sheet 440 including the pressure sensor 450 is disposed at a position adjacent to the input area disposed in the non-display area 120 of the display area 110, . 6B, when the OLED panel is applied as the display panel 200A, the sensor sheet 440 can be attached to the lower surface of the second substrate layer 283, and the touch input device 1000 according to the present invention can be used. May include a spacer layer 420 disposed between the sensor sheet 440 and the substrate 300. 7C, when an LCD panel is applied as the display panel 200A, the touch input device 1000 according to the present invention includes a backlight unit 200B, a backlight unit 200B, And a spacer layer 420 disposed between the sensor sheet 440 and the substrate 300. The spacer layer 420 may be disposed on the lower surface of the sensor sheet 440 and may have a sensor sheet 440 attached thereto.

5B, 6C to 6E, and 7D to 7I, the pressure sensing unit according to the present invention may be disposed in the display area 110 in the form of a sensor sheet 440. Specifically, the sensor sheet 440 including the pressure sensor 450 is disposed at a location adjacent to the input area disposed within the non-display area 120 of the display area 110, . 6C to 6E, when the OLED panel is applied as the display panel 200A, the touch input device 1000 according to the present invention includes a spacer disposed between the sensor sheet 440 and the display panel 200A, Layer 420 as shown in FIG. 7D to 7I, when the LCD panel is applied as the display panel 200A, the touch input apparatus 1000 according to the present invention includes a backlight unit 200B disposed under the display panel 200A, And a spacer layer 420 disposed between the unit 200B and the sensor sheet 440. 7E, 7G and 7I, the touch input apparatus 1000 according to the present invention further includes a backscan 350 disposed between the backlight unit 200B and the spacer layer 420 . 7f to 7i, a sensor groove 301 is formed on the substrate 300 of the touch input apparatus 1000 according to the present invention, and at least a part of the sensor sheet 440 is formed in the sensor groove 301). At this time, a pressure sensor 450 may be disposed on a part of the sensor sheet 440 inserted into the sensor groove 301. At this time, the upper surface of the sensor sheet 440 and the upper surface of the region where the sensor groove 301 of the substrate 300 is not disposed are placed on the same plane with the sensor sheet 440 inserted in the sensor groove 301 can do. When the sensor sheet 440 is inserted into the sensor groove 301 and the upper surface of the sensor sheet 440 and the upper surface of the region where the sensor groove 301 of the substrate 300 is not disposed are positioned on the same plane The spacer layer 420 in the region of the spacer layer 420 disposed above the sensor sheet 440 and the region of the spacer layer 420 disposed above the substrate 300 on which the sensor sheet 440 is not disposed, ) Is the same in thickness. At this time, the thickness of the sensor sheet 440 may be equal to the depth of the sensor groove 301, as shown in Figs. 7F and 7G. 7H and 7I, the touch input apparatus 1000 according to the present invention is inserted into the sensor groove 301 and disposed under the sensor sheet 440 inserted in the sensor groove 301 And may further include a home spacer layer 425. In this case, the sum of the thickness of the sensor sheet 440 and the thickness of the groove spacer layer 425 may be equal to the depth of the sensor groove 301.

5B and 7J, the pressure sensing unit according to the present invention may be disposed in the display area 110 in the form of a sensor sheet 440. 7J, when the LCD panel is applied as the display panel 200A, the touch input device 1000 according to the present invention includes a backlight unit 200B disposed under the display panel 200A, And a spacer layer 420 disposed between the base scan 300 and the base scan 350 and the base scan 300 disposed under the base scan 200B. At this time, the sensor sheet 440 may be disposed on the upper surface of the scan unit 350, away from the backlight unit 200B. In this case, an additional spacer layer (not shown) may be disposed between the sensor sheet 440 and the backlight unit 200B.

5G, the pressure sensor 450 may be electrically connected to the main board through the second connection unit 180 formed on the sensor sheet 440 including the pressure sensor 450. [ In addition, the sensor sheet 440 may further include a separate touch sensor for detecting whether a touch is input to the input area disposed in the non-display area 120. That is, a separate touch sensor may be disposed below the input area disposed in the non-display area 110 and formed integrally with the pressure sensing part. 5B and FIG. 5G, the sensor sheet 440 may further include a separate touch sensor 550 for detecting whether a touch is input to the hometry key 121. At this time, the separate touch sensor 550 may be a sensor that detects whether or not a touch is simply performed, or may be a user authentication sensor including a function of authenticating a user. For example, a fingerprint recognition sensor. In this case, since the pressure sensor 450 is disposed only in a part of the display region 110, the magnitude of the pressure applied to the display region 110 is not detected and is applied to the input region disposed in the non- It is possible to detect only the applied pressure.

5c and 8, the pressure sensor 450 according to the present invention may be disposed in the display area 110. As shown in FIG. Specifically, the pressure sensor 450 may be disposed over the entire area of the display area 110. [ In this case, since the pressure sensor 450 is disposed over the entire area of the display area 110, it also detects the pressure applied to the display area 110 and is applied to the input area disposed in the non- Pressure can also be detected. Specifically, as shown in FIGS. 5C and 8, a plurality of pressure sensors 450 are used to detect the magnitude of the pressure applied to the display area 110, and a non-display area (not shown) of the pressure sensor 450 The pressure sensor A disposed at a position adjacent to the input region disposed in the non-display region 120 can be used to detect the pressure applied to the input region disposed in the non-display region 120. [ It is possible to detect the magnitude of the pressure applied to the hammock 121 by using the pressure sensor A disposed adjacent to the hammock 121, for example. Similarly, another touch sensor (not shown) may be further included, and the separate touch sensor may be a sensor that detects whether the touch is simply touch or a user authentication sensor that includes a function of authenticating the user . 8, the pressure sensor 450 is directly formed on the lower surface of the display panel 200A. However, the pressure sensor 450 is not limited to the pressure sensor 450, but may be attached to the lower surface of the display panel 200A in the form of a sensor sheet 440 And may be adhered to the upper surface of the substrate 300. Also, the present invention is applicable to the case where the display panel 200A is an OLED panel as well as an LCD panel.

The touch input apparatus 1000 according to the present invention can be applied to an input region disposed in the non-display region 120 without a separate touch sensor 550 disposed in the input region disposed in the non- Can be determined. If the touch position sensing area 130 is the same as the display area 110 and the touch position is not detected by the touch sensor 10 disposed under the display area 110, It can be determined that it is applied to the arranged input area. When the touch position sensing area 130 is different from the display area 110, if the touch position is detected by the touch sensor 10 disposed under the input area disposed in the non-display area 120, It can be determined that the input signal is applied to the input region disposed in the display region 120. [ 4C, when the touch position sensing area 130 includes the display area 110, when the touch position is not detected by the touch sensor 10, the pressure is detected in the non- 120, as shown in FIG.

As shown in FIG. 5D, the pressure sensing unit according to the present invention may be disposed in the display area 110. FIG. Specifically, the pressure sensor 450 included in the pressure sensing unit is disposed at a position adjacent to the input region disposed in the display region 110, and may be disposed under the display panel 200A. In addition, the pressure sensor 450 may be integrally formed on the lower surface of the display panel 200A. 5H, the pressure sensor 450 may be electrically connected to the first PCB 160 through the trace 451 extending from the pressure sensor 450. [ Also, the trace 451 may be formed directly on the lower surface of the display panel 200A like the pressure sensor 450. [ Here, the first PCB 160 may be a touch PCB or a display PCB. In addition, the pressure sensor 450 may be electrically connected to the main board through the first connection part 170 formed in the first PCB 160. In addition, the touch input apparatus 1000 according to the present invention can detect whether a touch is input to an input area disposed in the display area 110. [ Specifically, when the touch position is sensed by the touch sensor 10 disposed under the input region disposed in the display region 110, it can be determined that the pressure is applied to the input region disposed in the display region 110 . In addition, the touch input apparatus 1000 according to the present invention may further include a user authentication sensor including a function of authenticating a user who detects whether a touch is input in an input area. At this time, the user authentication sensor may be, for example, a fingerprint recognition sensor. In this case, the pressure sensor 450 may be disposed in the same manner as in Figs. 6A to 6E and Figs. 7A to 7J. 6A, when the OLED panel is applied as the display panel 200A, the pressure sensor 450 may be directly formed on the bottom surface of the second substrate layer 283, and the touch input The apparatus 1000 may include a spacer layer 420 disposed between the pressure sensor 450 and the substrate 300. 7A and 7B, when the LCD panel is applied as the display panel 200A, the pressure sensor 450 can be directly formed on the lower surface of the second substrate layer 262 or the second polarizing layer 272 And the touch input apparatus 1000 according to the present invention may further include a backlight unit 200B disposed under the second polarizing layer 272. [ 7A, the touch input apparatus 1000 according to the present invention may include a spacer layer 420 disposed between the backlight unit 200B and the substrate 300, The touch input apparatus 1000 according to the present invention includes a touch screen 350 and a touch screen 350 disposed below the back light unit 200B and surrounding the display panel 200A and the back light unit 200B, And a spacer layer 420 disposed between the spacer layer 300 and the spacer layer 420. At this time, the backscatter 350 functions to protect the display panel 200A and the backlight unit 200B and can be fixed to the cover layer 100 or the display panel 200A.

6 (b) and 7 (c), the pressure sensing unit according to the present invention may be disposed in the display area 110 in the form of a sensor sheet 440. Specifically, the sensor sheet 440 including the pressure sensor 450 may be disposed at a location adjacent to the input area of the display area 110, for example, the home key 121, and may be attached to the bottom of the display panel 200A have. 6B, when the OLED panel is applied as the display panel 200A, the sensor sheet 440 can be attached to the lower surface of the second substrate layer 283, and the touch input device 1000 according to the present invention can be used. May include a spacer layer 420 disposed between the sensor sheet 440 and the substrate 300. 7C, when an LCD panel is applied as the display panel 200A, the touch input device 1000 according to the present invention includes a backlight unit 200B, a backlight unit 200B, And a spacer layer 420 disposed between the sensor sheet 440 and the substrate 300. The spacer layer 420 may be disposed on the lower surface of the sensor sheet 440 and may have a sensor sheet 440 attached thereto.

6C to 6E and 7D to 7I, the pressure sensing unit according to the present invention may be disposed in the display area 110 in the form of a sensor sheet 440. [ Specifically, the sensor sheet 440 including the pressure sensor 450 may be disposed at an input area of the display area 110, for example, adjacent to the hinge key 121, and may be attached to the top of the substrate 300 . 6C to 6E, when the OLED panel is applied as the display panel 200A, the touch input device 1000 according to the present invention includes a spacer disposed between the sensor sheet 440 and the display panel 200A, Layer 420 as shown in FIG. 7D to 7I, when the LCD panel is applied as the display panel 200A, the touch input apparatus 1000 according to the present invention includes a backlight unit 200B disposed under the display panel 200A, And a spacer layer 420 disposed between the unit 200B and the sensor sheet 440. 7E, 7G and 7I, the touch input apparatus 1000 according to the present invention further includes a backscan 350 disposed between the backlight unit 200B and the spacer layer 420 . 7f to 7i, a sensor groove 301 is formed on the substrate 300 of the touch input apparatus 1000 according to the present invention, and at least a part of the sensor sheet 440 is formed in the sensor groove 301). At this time, a pressure sensor 450 may be disposed on a part of the sensor sheet 440 inserted into the sensor groove 301. At this time, the upper surface of the sensor sheet 440 and the upper surface of the region where the sensor groove 301 of the substrate 300 is not disposed are placed on the same plane with the sensor sheet 440 inserted in the sensor groove 301 can do. When the sensor sheet 440 is inserted into the sensor groove 301 and the upper surface of the sensor sheet 440 and the upper surface of the region where the sensor groove 301 of the substrate 300 is not disposed are positioned on the same plane The spacer layer 420 in the region of the spacer layer 420 disposed above the sensor sheet 440 and the region of the spacer layer 420 disposed above the substrate 300 on which the sensor sheet 440 is not disposed, ) Is the same in thickness. At this time, the thickness of the sensor sheet 440 may be equal to the depth of the sensor groove 301, as shown in Figs. 7F and 7G. 7H and 7I, the touch input apparatus 1000 according to the present invention is inserted into the sensor groove 301 and disposed under the sensor sheet 440 inserted in the sensor groove 301 And may further include a home spacer layer 425. In this case, the sum of the thickness of the sensor sheet 440 and the thickness of the groove spacer layer 425 may be equal to the depth of the sensor groove 301.

7J, the pressure sensing unit according to the present invention may be disposed in the display area 110 in the form of a sensor sheet 440. [ 7J, when the LCD panel is applied as the display panel 200A, the touch input device 1000 according to the present invention includes a backlight unit 200B disposed under the display panel 200A, And a spacer layer 420 disposed between the base scan 300 and the base scan 350 and the base scan 300 disposed under the base scan 200B. At this time, the sensor sheet 440 may be disposed on the upper surface of the scan unit 350, away from the backlight unit 200B. In this case, an additional spacer layer (not shown) may be disposed between the sensor sheet 440 and the backlight unit 200B.

As shown in FIG. 5E, the pressure sensor 450 according to the present invention may be disposed in the display area 110. FIG. Specifically, the pressure sensor 450 may be disposed over the entire area of the display area 110. [ In this case, since the pressure sensor 450 is disposed over the entire area of the display area 110, it is possible to detect the pressure applied to the display area 110 and also detect the pressure applied to the input area. 5E, a plurality of pressure sensors 450 are used to detect the magnitude of the pressure applied to the display area 110, and the pressure sensor 450 is disposed at a position adjacent to the input area of the pressure sensor 450 It is possible to detect the pressure applied to the input area by using the pressure sensor (A). It is possible to detect the magnitude of the pressure applied to the hammock 121 by using the pressure sensor A disposed adjacent to the hammock 121, for example. Similarly, it may further include a user authentication sensor including a function of authenticating a separate user. 8, the pressure sensor 450 is directly formed on the lower surface of the display panel 200A. However, the pressure sensor 450 is not limited to the pressure sensor 450, but may be attached to the lower surface of the display panel 200A in the form of a sensor sheet 440 And may be adhered to the upper surface of the substrate 300. Also, the present invention is applicable to the case where the display panel 200A is an OLED panel as well as an LCD panel.

The touch input apparatus 1000 according to the present invention can determine whether a pressure is applied to an input area. When the touch position is detected by the touch sensor 10 disposed under the input area, it can be determined that the pressure is applied to the area.

FIGS. 9A and 9B are cross-sectional views of the touch input apparatus according to the embodiment of the present invention shown in FIGS. 5C and 8, respectively, when pressure is applied thereto. FIGS. 9C and 5D are cross- Sectional view when pressure is applied to the touch input device. Specifically, FIG. 9A is a sectional view taken along line BB 'of FIG. 4A when pressure is applied to an input region disposed in the non-display region 120 of the touch input apparatus 1000 shown in FIGS. 5C and 8, Sectional view of the touch input device 1000 shown in FIG. 5C, and FIG. 9C is a sectional view of the touch input device 1000 shown in FIG. 5D when pressure is applied to the display area 110 of the touch input device 1000 shown in FIG. 5C and FIG. Sectional view taken along line BB 'of FIG. 4A when a pressure is applied to an input region disposed in the display region 110. FIG.

FIGS. 10A and 10B are views showing warpage of a display panel when pressure is applied to the touch input device according to the embodiment of the present invention shown in FIG. 5C and FIG. 10A is a view showing a warpage of the display panel when pressure is applied to the non-display area 120 of the touch input apparatus 1000 shown in Figs. 5C and 8, Fig. 8 is a view showing the warpage of the display panel when pressure is applied to the display area 110 of the touch input apparatus 1000 shown in FIG.

9A to 9C, when the pressure is applied to the cover layer 100, the cover layer 100 and the display panel 200A can be bent. At this time, the electrical characteristics of the pressure sensor 450 disposed under the display panel 200A may vary as the cover layer 100 and the display panel 200A are warped. From the electrical characteristics of the pressure sensor 450, The magnitude of the applied pressure can be detected. Specifically, as shown in FIG. 9A, when a pressure is applied to an input region disposed in the non-display region 120, a pressure sensor (not shown) disposed at a position adjacent to the input region disposed in the non- A) from the electrical characteristics of the non-display region 120. [0035] 9C, when pressure is applied to the input region disposed in the display region 110, the magnitude of the pressure applied to the input region is detected from the electrical characteristics of the pressure sensor disposed at a position adjacent to the input region can do.

Although the touch input apparatus 1000 shown in FIG. 8 has been described above by way of example, the touch input apparatus 1000 shown in FIGS. 5A to 5H, 6A to 6E, and 7A to 7J also has the same method Display region 120. The pressure applied to the non- Specifically, when pressure is applied to the cover layer 100 in the touch input device 1000 shown in FIGS. 6A to 6B and FIGS. 7A to 7C, the cover layer 100 and the display panel 200A can be bent have. At this time, as the cover layer 100 and the display panel 200A are warped, the distance between the pressure sensor 450 disposed under the display panel 200A and the reference potential layer disposed below the pressure sensor 450 changes , The capacitance detected by the pressure sensor 450 may vary depending on the distance between the pressure sensor 450 and the reference potential layer. At this time, the reference potential layer may be the substrate 300. Therefore, the magnitude of the pressure applied from the capacitance detected by the pressure sensor 450 can be detected. In addition, when pressure is applied to the cover layer 100 in the touch input device 1000 shown in Figs. 6C to 6E and 7D to 7I, the cover layer 100 and the display panel 200A can be bent . At this time, as the cover layer 100 and the display panel 200A are warped, the distance between the pressure sensor 450 disposed on the substrate 300 side and the reference potential layer disposed on the pressure sensor 450 changes, The capacitance detected by the pressure sensor 450 may vary depending on the distance between the pressure sensor 450 and the reference potential layer. In this case, the reference potential layer may be a lower surface of the display panel 200A, a reference potential located on the display panel 200A, or may be a scan 350. Therefore, the magnitude of the pressure applied from the capacitance detected by the pressure sensor 450 can be detected. At this time, when the groove spacer layer 425 is disposed under the pressure sensor 450, as shown in FIGS. 6E, 7H, and 7I, the pressure sensor 450 and the groove spacer layer 425 are disposed under the pressure sensor 450 One region of the substrate 300 may be a reference potential layer. Here, since the groove spacer layer 425 may be smaller in thickness than the spacer layer 420, when pressure is detected through a change in the thickness of the groove spacer layer 425, the pressure is detected through the spacer layer 420 The sensitivity can be higher.

9B, when pressure is applied to the display region 110, the magnitude of the pressure applied to the display region 110 can be detected from the electrical characteristics of the pressure sensor disposed under the display panel 200A .

In this case, when it is determined by the touch sensor 10 disposed under the display area 110 that pressure is applied to the input area disposed in the non-display area 120, pressure is applied to the display area 110 It may not be clearly distinguished from the case where In other words, when a non-conductive pressure is applied to the display region 110, the touch position is not detected by the touch sensor 10 disposed under the display region 110, It may be indistinguishable from the case where the pressure is applied to the area.

9A, when a pressure is applied to an input region disposed in the non-display region 120 of the touch input apparatus 1000 according to the present invention, the cover layer 100 corresponding to the pressure applied position Are most bent, and the cover layer 100 and the display panel 200A corresponding to the display area 110 adjacent to the position where the pressure is applied can be relatively less bent.

9B, when a pressure is applied to the display area 110 of the touch input device 1000 according to the present invention, the cover layer 100 and the display panel 200A corresponding to the pressure applied position, The cover layer 100 and the display panel 200A corresponding to the display area 110 at a position adjacent to the position where the pressure is applied may be relatively less bent.

Specifically, when pressure is applied to the hump key 121 included in the non-display area 120 and pressure is applied to the position where the pressure sensor A included in the display area 110 and adjacent to the hump key 121 is disposed, As shown in FIGS. 10A and 10B, when pressure is applied to the position where the pressure sensor A is disposed, the pressure is applied to the pressure sensor A from the pressure sensor A The amount of change of the detected electrical characteristic is larger and the number of the pressure sensors A and the number of other pressure sensors B adjacent to each other are larger. That is, the profile of the electrical characteristic detected from the pressure sensor 450 when the pressure is applied to the display area 110 and the pressure sensor 450 when the pressure is applied to the input area disposed in the non- ) May be different from each other. Thus, based on the profile of the electrical characteristic detected from the pressure sensor 450, it can be determined whether the pressure is applied to the input region disposed in the non-display region 120. [

In the above description, the input region is disposed in the non-display region 120 as shown in FIG. 9B. However, as shown in FIGS. 4D, 4E, 5D, 5E, It is possible to judge whether the pressure is applied to the input area disposed in the display area 110 based on the profile of the electrical characteristic detected from the pressure sensor 450 when the input area is disposed in the display area 110. [

As described above, it is determined that pressure is applied to the input region using a separate touch sensor 550 or a separate touch sensor 550. If the pressure applied to the input region is greater than or equal to a predetermined value, A function corresponding to the input area can be executed. If a separate touch sensor is a user authentication sensor, the user is authenticated by the user authentication sensor, and if the magnitude of the pressure applied to the input area is equal to or greater than a predetermined value, the function corresponding to the input area can be executed. For example, when the magnitude of the pressure applied to the home key 121 is equal to or greater than a predetermined value, an initial screen can be displayed in the display area 110. Further, when the magnitude of the pressure applied to the speaker 122 is equal to or larger than the predetermined value, the volume adjustment setting screen can be displayed, and when the magnitude of the pressure applied to the camera 123 is equal to or larger than a predetermined value, . Likewise, when the magnitude of the pressure applied to the back key is greater than or equal to the predetermined value, the back function can be performed, and when the magnitude of the pressure applied to the menu key is equal to or greater than the predetermined value, the menu bar can be displayed. The function corresponding to the input area as described above can be executed even when the touch input apparatus 1000 is in the standby mode.

11A, 11B and 11D to 11G are sectional views taken along the line AA 'of the touch input device according to the embodiment of the present invention shown in FIG. 4A, and FIG. 11C is an exploded perspective view of the touch input device according to the embodiment of the present invention .

Although the display panel 200A is shown as being directly laminated and attached to the cover layer 100 in Figure 11A and some of the following drawings, this is for illustrative convenience only and the first polarizing layer 271, The display module 200 located on the upper side may be laminated to the cover layer 100 and the second polarizing layer 272 and the backlight unit are omitted when the LCD panel is the display panel 200A.

11A to 11G, a cover layer 100 in which a touch sensor is formed as a touch input device 1000 according to an embodiment of the present invention is mounted on a display module 200 shown in FIGS. 3A and 3B, The touch input device 1000 according to the embodiment of the present invention includes a case where the touch sensor 10 is disposed inside the display module 200 shown in FIGS. 3A and 3B . 11A to 11C show that the cover layer 100 formed with the touch sensor 10 covers the display module 200 including the display panel 200A, A touch input device 1000 that is located inside the display device 200 and in which the display module 200 is covered with a cover layer 100 such as glass can be used as an embodiment of the present invention.

The touch input device 1000 according to the embodiment of the present invention may be applied to various devices such as a cell phone, a PDA (Personal Data Assistant), a smartphone, a tablet PC, an MP3 player, a notebook, And electronic devices including the same touch screen.

The substrate 300 in the touch input apparatus 1000 according to the embodiment of the present invention may include a housing 320 as an outermost structure of the touch input apparatus 1000 and a circuit board 300 for operating the touch input apparatus 1000, And / or a mounting space 310 where the battery can be placed, and the like. A central processing unit (CPU), an application processor (CPU), or the like may be mounted on the circuit board for operating the touch input device 1000 as a main board. The circuit board and / or the battery for the operation of the display module 200 and the touch input device 1000 are separated through the substrate 300 and the electrical noise generated in the display module 200 and the noise generated in the circuit board Can be blocked.

The touch sensor 10 or the cover layer 100 may be formed wider than the display module 200, the substrate 300 and the mounting space 310 in the touch input device 1000, The housing 320 may be formed to enclose the display module 200, the substrate 300, and the circuit board together with the touch sensor 10.

The touch input apparatus 1000 according to the embodiment of the present invention detects a touch position through the touch sensor 10 and detects an electrode used for detecting the touch position and a separate sensor So that the touch pressure can be detected. At this time, the touch sensor 10 may be located inside or outside the display module 200.

Hereinafter, the configuration for pressure detection will be collectively referred to as a pressure sensing portion. For example, in the embodiment shown in FIG. 11A, the pressure sensing part may include a sensor sheet 440, and in the embodiment shown in FIG. 11B, the pressure sensing part may include pressure sensors 450 and 460.

11A, a sensor sheet 440 including pressure sensors 450 and 460 may be disposed between the display module 200 and the substrate 300, as shown in FIG. 11B, The pressure sensors 450 and 460 may be formed directly on the lower surface of the display panel 200A.

The pressure sensing part includes a spacer layer 420 made of, for example, an airgap, which will be described in detail with reference to FIGS. 11A to 11G.

Depending on the embodiment, the spacer layer 420 may be implemented with an air gap. The spacer layer may be made of a shock-absorbing material according to an embodiment. The spacer layer 420 may be filled with a dielectric material according to embodiments. Depending on the embodiment, the spacer layer 420 may be formed of a material having a resilient force that contracts upon application of pressure and returns to its original shape upon release of pressure. According to an embodiment, the spacer layer 420 may be formed of an elastic foam. Further, since the spacer layer is disposed under the display module 200, it may be a transparent material or an opaque material.

In addition, the reference potential layer may be disposed under the display module 200. Specifically, the reference potential layer may be formed on the substrate 300 disposed under the display module 200, or the substrate 300 itself may serve as a reference potential layer. The reference potential layer may be formed on a cover (not shown) that is disposed on the substrate 300 and disposed under the display module 200 and functions to protect the display module 200, It can serve as a dislocation layer. The display panel 200A may be bent when the pressure is applied to the touch input device 1000 and the distance between the reference potential layer and the pressure sensors 450 and 460 may vary as the display panel 200A is warped. Further, a spacer layer may be disposed between the reference potential layer and the pressure sensors 450 and 460. Specifically, a spacer layer may be disposed between the display module 200 and the substrate 300 on which the reference potential layer is disposed, or between the display module 200 and the cover on which the reference potential layer is disposed.

In addition, the reference potential layer may be disposed inside the display module 200. Specifically, the reference potential layer may be disposed on the upper surface or the lower surface of the first substrate layer 261, 281 of the display panel 200A, or on the upper surface or the lower surface of the second substrate layer 262, 283. The display panel 200A may be bent when the pressure is applied to the touch input device 1000 and the distance between the reference potential layer and the pressure sensors 450 and 460 may vary as the display panel 200A is warped. Further, a spacer layer may be disposed between the reference potential layer and the pressure sensors 450 and 460. In the case of the touch input device 1000 shown in Figs. 3A and 3B, the spacer layer may be disposed on the top or inside of the display panel 200A.

Likewise, according to embodiments, the spacer layer may be implemented with an air gap. The spacer layer may be made of a shock-absorbing material according to an embodiment. The spacer layer may be filled with a dielectric material according to an embodiment. Depending on the embodiment, the spacer layer may be formed of a material having a resilience that contracts upon application of pressure and returns to its original shape upon release of pressure. According to an embodiment, the spacer layer may be formed of an elastic foam. Further, since the spacer layer is disposed on or inside the display panel 200A, it may be a transparent material.

According to the embodiment, when the spacer layer is disposed inside the display module 200, the spacer layer may be an air gap included in manufacturing the display panel 200A and / or the backlight unit. When the display panel 200A and / or the backlight unit include one air gap, the one air gap can perform the function of the spacer layer. In the case where the display panel 200A and / or the backlight unit include a plurality of air gaps, As a spacer layer.

11C is a perspective view of the touch input apparatus 1000 according to the embodiment shown in FIG. 11A of the present invention. The sensor sheet 440 in the first example of the present invention may be disposed between the display module 200 and the substrate 300 in the touch input device 1000 as shown in FIG. The touch input apparatus 1000 may include a spacer layer disposed between the display module 200 of the touch input apparatus 1000 and the substrate 300 to dispose the sensor sheet 440.

Hereinafter, the sensors 450 and 460 for detecting the pressure are referred to as the pressure sensors 450 and 460 so as to be clearly distinguished from the electrodes included in the touch sensor 10. In this case, since the pressure sensors 450 and 460 are disposed on the rear surface of the display panel 200A rather than on the front surface thereof, the pressure sensors 450 and 460 may be formed of an opaque material as well as a transparent material. When the display panel 200A is an LCD panel, light must be transmitted through the backlight unit, so that the pressure sensors 450 and 460 may be made of a transparent material such as ITO.

At this time, a frame 330 having a predetermined height along the rim of the upper portion of the substrate 300 may be formed to hold the spacer layer 420 on which the pressure sensors 450 and 460 are disposed. At this time, the frame 330 may be adhered to the cover layer 100 with an adhesive tape (not shown). Although the frame 330 is shown as being formed on all the edges of the substrate 300 (e.g., four sides of a square) in FIG. 11C, the frame 330 may include at least some of the edges of the substrate 300 Three surfaces). According to an embodiment, the frame 330 may be integrally formed with the substrate 300 on the upper surface of the substrate 300. In an embodiment of the present invention, the frame 330 may be constructed of a material that is not elastic. In the embodiment of the present invention, when the display panel 200A is applied with pressure through the cover layer 100, the display panel 200A may be bent together with the cover layer 100, The magnitude of the touch pressure can be detected even if there is no deformation of the mold.

11D is a cross-sectional view of a touch input device including a pressure sensor according to an embodiment of the present invention. The pressure sensors 450 and 460 according to the embodiment of the present invention may be disposed on the lower surface of the display panel 200A as the spacer layer 420, as shown in FIG.

The pressure sensor for pressure detection may include a first sensor 450 and a second sensor 460. At this time, one of the first sensor 450 and the second sensor 460 may be a driving sensor and the other may be a receiving sensor. A drive signal may be applied to the drive sensor and a sense signal may be obtained that includes information about the electrical characteristics that change as pressure is applied through the receive sensor. For example, when a voltage is applied, mutual capacitance may be created between the first sensor 450 and the second sensor 460.

11E is a sectional view when pressure is applied to the touch input apparatus 1000 shown in FIG. The top surface of the substrate 300 may have a ground potential for noise shielding. When the pressure is applied to the surface of the cover layer 100 through the object 500, the cover layer 100 and the display panel 200A may be warped or pressed. The distance d between the ground potential plane and the pressure sensors 450 and 460 can be reduced to d '. In this case, as the distance d decreases, the fringing capacitance is absorbed to the upper surface of the substrate 300, so that the mutual capacitance between the first sensor 450 and the second sensor 460 may decrease . Accordingly, it is possible to calculate the magnitude of the touch pressure by obtaining a reduction amount of mutual capacitance in the sensing signal obtained through the reception sensor.

In FIG. 11E, the case where the upper surface of the substrate 300 is the ground potential, that is, the reference potential layer is described. However, the reference potential layer may be disposed inside the display module 200. At this time, when the pressure is applied to the surface of the cover layer 100 through the object 500, the cover layer 100 and the display panel 200A can be bent or pressed. Accordingly, the distance between the reference potential layer disposed inside the display module 200 and the pressure sensors 450 and 460 varies, and thus, the capacitance change amount is obtained from the sensing signal obtained through the reception sensor, and the magnitude of the touch pressure is calculated .

In the touch input device 1000 according to the embodiment of the present invention, the display panel 200A can be bent or pressed according to a touch to apply pressure. According to the embodiment, the position where the display panel 200A is deformed when the display panel 200A is bent or pressed may not coincide with the touch position, but the display panel 200A may exhibit warping at least at the touch position. For example, when the touch position is close to the edge and the edge of the display panel 200A, the position where the display panel 200A is warped or pressed most greatly may be different from the touch position, It is possible to indicate warping or pressing.

The first sensor 450 and the second sensor 460 shown in Figs. 11D and 11E, respectively, in a form in which the first sensor 450 and the second sensor 460 are formed in the same layer, And may be constituted by a plurality of sensors in the form of a rhombus. Here, the plurality of first sensors 450 are mutually connected in the first axis direction, the plurality of second sensors 460 are mutually connected in the second axis direction orthogonal to the first axis direction, At least one of the first sensor 450 and the second sensor 460 may be in the form of a plurality of diamond-shaped sensors connected through a bridge so that the first sensor 450 and the second sensor 460 are insulated from each other. At this time, the first sensor 450 and the second sensor 460 shown in FIG. 13 may be configured as a sensor of the type shown in FIG. 14B.

It is exemplified that the touch pressure is detected from the change of mutual capacitance between the first sensor 450 and the second sensor 460. However, the pressure sensing unit may be configured to include only the pressure sensor of either the first sensor 450 or the second sensor 460. In this case, one pressure sensor and the ground layer (substrate 300 or display module The magnitude of the touch pressure can be detected by detecting the change in the electrostatic capacitance, that is, the magnitude of the electrostatic capacitance, between the reference potential layer disposed within the semiconductor substrate 200 and the reference potential layer. At this time, a drive signal is applied to the one pressure sensor, and a change in magnetic capacitance between the pressure sensor and the ground layer can be sensed by the pressure sensor.

For example, in FIG. 11D, the pressure sensor may be configured to include only the first sensor 450, wherein the first sensor 450, which is caused by the distance change between the substrate 300 and the first sensor 450, It is possible to detect the magnitude of the touch pressure from the change in capacitance between the electrodes 300. The capacitance d between the substrate 300 and the first sensor 450 may increase as the touch pressure increases because the distance d decreases as the touch pressure increases. At this time, the pressure sensor does not need to have a comb-like shape or a triangular shape necessary for increasing mutual capacitance change detection accuracy, and may have a single plate (for example, a rectangular plate) A plurality of first sensors 450 may be arranged in a lattice pattern at regular intervals.

11F illustrates a case in which the pressure sensors 450 and 460 are formed on the upper surface of the substrate 300 and the lower surface of the display module 200 in the spacer layer 420. 11A, when the pressure sensing unit is configured as a sensor sheet, the sensor sheet includes a first sensor sheet 440-1 including a first sensor 450 and a second sensor 460 And the second sensor sheet 440-2. At this time, either one of the first sensor 450 and the second sensor 460 may be formed on the substrate 300, and the other one may be formed on the lower surface of the display module 200. 11G illustrates that the first sensor 450 is formed on the substrate 300 and the second sensor 460 is formed on the lower surface of the display module 200. [

Fig. 11G illustrates a case in which the pressure sensors 450 and 460 are formed on the upper surface of the substrate 300 and the lower surface of the display panel 200A in the spacer layer 420. Fig. At this time, the first sensor 450 is formed on the lower surface of the display panel 200A, and the second sensor 460 is formed on the first insulating layer 470 such that the second sensor 460 is formed on the lower surface of the display panel 200A, 2 insulating layer 471 may be disposed on the upper surface of the substrate 300 in the form of a sensor sheet on which the second sensor 460 is formed.

When the pressure is applied to the surface of the cover layer 100 through the object 500, the cover layer 100 and the display panel 200A may be warped or pressed. Accordingly, the distance d between the first sensor 450 and the second sensor 460 can be reduced. In this case, the mutual capacitance between the first sensor 450 and the second sensor 460 may increase as the distance d decreases. Accordingly, it is possible to calculate the magnitude of the touch pressure by acquiring an increase amount of mutual capacitance in the sensing signal obtained through the reception sensor. In this case, since the first sensor 450 and the second sensor 460 are formed on different layers in FIG. 11G, the first sensor 450 and the second sensor 460 need not have a comb-like shape or a trident shape One of the first sensor 450 and the second sensor 460 may have one plate (for example, a rectangular plate), and the other may have a plurality of sensors at regular intervals And may be arranged in a lattice pattern.

11A, the pressure sensors 450 and 460 are formed directly on the lower surface of the display panel 200A. However, as shown in FIG. 11A, the sensor sheets 450 and 460, including the pressure sensors 450 and 460, The present invention is also applicable to the embodiment in which the display module 440 is disposed between the display module 200 and the substrate 300. Specifically, the sensor sheet 440 including the pressure sensors 450 and 460 may be attached to the lower surface of the display module 200, or may be attached to the upper surface of the substrate 300.

In this case, the top surface of the substrate 300 may also have a ground potential for noise shielding. 12 illustrates a cross section of a sensor sheet according to an embodiment of the present invention. Referring to FIG. 12A, a cross section of a case where the sensor sheet 440 including the pressure sensors 450 and 460 is mounted on the substrate 300 or the display module 200 is illustrated. The pressure sensors 450 and 460 are located between the first insulation layer 470 and the second insulation layer 471 so that the pressure sensors 450 and 460 are positioned between the substrate 300 and the display module 200, Can be prevented from being short-circuited. Depending on the type and / or implementation of the touch input device 1000, the substrate 300 or the display module 200 to which the pressure sensors 450 and 460 are attached may not exhibit the ground potential or may exhibit a weak ground potential. In this case, the touch input device 1000 according to the embodiment of the present invention may further include a ground electrode (not shown) between the substrate 300 or the display module 200 and the insulating layer 470 . According to an embodiment, another insulating layer (not shown) may further be provided between the ground electrode and the substrate 300 or the display module 200. At this time, the ground electrode (not shown) can prevent the magnitude of capacitance generated between the first sensor 450 and the second sensor 460, which are pressure sensors, from becoming too large.

The first sensor 450 and the second sensor 460 may be implemented in different layers according to the embodiment to constitute a sensor layer. FIG. 12B illustrates a cross-sectional view of the case where the first sensor 450 and the second sensor 460 are implemented in different layers. The first sensor 450 is formed on the first insulating layer 470 and the second sensor 460 is formed on the first sensor 450 as shown in Figure 12 (b) Layer 471 as shown in FIG. According to an embodiment, the second sensor 460 may be covered with a third insulating layer 472. That is, the sensor sheet 440 may include a first insulating layer 470 to a third insulating layer 472, a first sensor 450, and a second sensor 460. At this time, since the first sensor 450 and the second sensor 460 are located on different layers, they may overlap each other. For example, the first sensor 450 and the second sensor 460 may be formed similar to the pattern of the driving electrode TX and the receiving electrode RX arranged in the MXN structure, as shown in FIG. 14C . At this time, M and N may be natural numbers of 1 or more. Alternatively, as shown in FIG. 14A, the first sensor 450 and the second sensor 460 in the rhombic shape may be located on different layers, respectively.

FIG. 12C illustrates a cross section of the sensor sheet 440 when only the first sensor 450 is implemented. The sensor sheet 440 including the first sensor 450 may be disposed on the substrate 300 or the display module 200 as illustrated in Figure 12 (c).

12D shows a first sensor sheet 440-1 including a first sensor 450 attached to a substrate 300 and a second sensor sheet 440- 2) is attached to the display module 200. FIG. The first sensor sheet 440-1 including the first sensor 450 may be disposed on the substrate 300 as illustrated in Figure 12 (d). In addition, the second sensor sheet 440-2 including the second sensor 460 may be disposed on the lower surface of the display module 200.

12 (a), when the substrate 300 or the display module 200 to which the pressure sensors 450 and 460 are attached does not exhibit the ground potential or exhibits a weak ground potential, The sensor sheet 440 further includes a ground electrode (not shown) between the substrate 300 or the display module 200 and the first insulation layers 470, 470-1 and 470-2 . At this time, the sensor sheet 440 may further include an additional insulation layer (not shown) between the ground electrode (not shown) and the substrate 300 or the display module 200.

In the touch input device 1000 according to the present invention, the pressure sensors 450 and 460 may be formed directly on the display panel 200A. 13A to 13C are cross-sectional views illustrating an embodiment of a pressure sensor formed directly on various display panels in a touch input device according to an embodiment of the present invention.

13A shows pressure sensors 450 and 460 formed on a display panel 200A using an LCD panel. Specifically, as shown in FIG. 13A, pressure sensors 450 and 460 may be formed on the bottom surface of the second substrate layer 262. At this time, the pressure sensors 450 and 460 may be formed on the bottom surface of the second polarizing layer 272. When a touch pressure is detected based on the amount of mutual capacitance change when a pressure is applied to the touch input apparatus 1000, a drive signal is applied to the drive sensor 450, and a reference potential layer From the reception sensor 460, an electrical signal including information on a capacitance that changes in accordance with a change in distance between the pressure sensor 450 and the pressure sensors 450 and 460. In the case of detecting the touch pressure based on the amount of electrostatic capacitance change, a drive signal is applied to the pressure sensors 450 and 460, and a change in the distance between the reference potential layer spaced apart from the pressure sensors 450 and 460 and the pressure sensors 450 and 460 From the pressure sensors 450 and 460, an electrical signal including information on the capacitance that is to be measured. Here, the reference potential layer may be a substrate 300, a cover disposed between the display panel 200A and the substrate 300, and a function of protecting the display panel 200A.

Next, Fig. 13B shows pressure sensors 450 and 460 formed on the lower surface of the display panel 200A using an OLED panel (in particular, an AM-OLED panel). Specifically, the pressure sensors 450 and 460 may be formed on the lower surface of the second substrate layer 283. At this time, the method of detecting the pressure is the same as that described in Fig. 13A.

In the case of the OLED panel, since the light is emitted from the organic material layer 280, the pressure sensors 450 and 460 formed on the lower surface of the second substrate layer 283 disposed under the organic material layer 280 may be made of an opaque material. In this case, since the patterns of the pressure sensors 450 and 460 formed on the lower surface of the display panel 200A can be seen by the user, in order to directly form the pressure sensors 450 and 460 on the lower surface of the second substrate layer 283, After the light shielding layer such as black ink is applied to the lower surface of the layer 283, the pressure sensors 450 and 460 can be formed on the light shielding layer.

13B, pressure sensors 450 and 460 are formed on the lower surface of the second substrate layer 283. However, a third substrate layer (not shown) may be disposed below the second substrate layer 283, 3 pressure sensors 450 and 460 may be formed on the lower surface of the substrate layer. Particularly, when the display panel 200A is a flexible OLED panel, since the display panel 200A composed of the first substrate layer 281, the organic layer 280 and the second substrate layer 283 is very thin and well warped, It is possible to dispose a third substrate layer that does not bend relatively well below the substrate layer 283.

Next, Fig. 13C shows the pressure sensors 450 and 460 formed in the display panel 200A using the OLED panel. Specifically, pressure sensors 450 and 460 may be formed on the upper surface of the second substrate layer 283. At this time, the method of detecting the pressure is the same as that described in Fig. 13A.

13C, the display panel 200A using the OLED panel has been described. However, the pressure sensors 450 and 460 may be formed on the upper surface of the second substrate layer 272 of the display panel 200A using the LCD panel It is possible.

13A to 13C, the pressure sensors 450 and 460 are formed on the upper surface or the lower surface of the second substrate layers 272 and 283. However, when the pressure sensors 450 and 460 are formed on the upper surface or the lower surface of the first substrate layers 261 and 281, As shown in FIG.

13A to 13C, the pressure sensing unit including the pressure sensors 450 and 460 is directly formed on the display panel 200A. Alternatively, the pressure sensing unit may be formed directly on the substrate 300, Or may be a cover that is disposed between the display panel 200A and the substrate 300 and functions to protect the display panel 200A.

13A to 13C, the reference potential layer is disposed below the pressure sensing portion. However, the reference potential layer may be disposed inside the display panel 200A. Specifically, the reference potential layer may be disposed on the upper or lower surface of the first substrate layer 261, 281 of the display panel 200A, or on the upper surface or the lower surface of the second substrate layer 262, 283.

11G, the pressure sensors 450 and 460 for sensing a capacitance change amount in the touch input device 1000 according to the present invention include a first sensor 450 formed directly on the display panel 200A, And a second sensor 460 configured in the form of a sensor. 13A to 13C, and the second sensor 460 is formed in the form of a sensor sheet as described with reference to FIG. 11G, And may be attached to the input device 1000.

When the pressure sensor controller 1300 and the touch sensor controller 1100 are integrated into one IC in the touch input device 1000 according to the embodiment of the present invention, The control unit of the integrated IC performs the scanning of the touch sensor 10 in the first time period and the scanning of the pressure sensor in the second time period different from the first time period, A control signal may be generated to perform scanning of the pressure sensing portion.

In the above description, the pressure sensor 450 included in the pressure sensing unit is composed of electrodes, and as the electrical characteristics sensed by the pressure sensing unit, the capacitance variation according to the warping of the display panel 200A is detected to detect the magnitude of the pressure However, the present invention is not limited to this. The pressure sensor 450 included in the pressure sensing unit may be a strain gauge, and the pressure sensor may be a pressure sensor that varies as the display panel 200A is warped 450 may be detected to detect the magnitude of the pressure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

10: touch sensor 11: sensing unit
12: driving unit 13:
100: cover layer 200: display module
300: substrate 450, 460: pressure sensor

Claims (11)

A cover layer having a display area and an input area contained within the display area;
A display panel disposed below the display area;
A display PCB disposed below the display panel;
A fingerprint recognition sensor disposed under the input area and recognizing a fingerprint input to the input area and electrically connected to the display PCB; And
And a pressure sensor disposed below the display panel and disposed adjacent to the fingerprint sensor and electrically connected to the display PCB,
And detects the magnitude of the pressure of the touch input to the input area from the electrical characteristics output from the pressure sensor when a predetermined touch is input to the input area.
A cover layer having a display area and an input area contained within the display area;
A display panel disposed below the display area;
A touch PCB disposed under the display panel;
A fingerprint recognition sensor disposed under the input region and recognizing a fingerprint inputted to the input region and electrically connected to the touch PCB; And
And a pressure sensor disposed under the display panel and disposed adjacent to the fingerprint sensor and electrically connected to the touch PCB,
And detects the magnitude of the pressure of the touch input to the input area from the electrical characteristics output from the pressure sensor when a predetermined touch is input to the input area.
3. The method according to claim 1 or 2,
Wherein the function corresponding to the input area is executed when the user is authenticated by the fingerprint recognition sensor and the magnitude of the pressure applied to the detected input area is equal to or greater than a predetermined value.
3. The method according to claim 1 or 2,
Wherein the function corresponding to the input area is executed when the magnitude of the pressure applied to the detected input area is equal to or greater than a predetermined value and the user is authenticated by the fingerprint recognition sensor.
3. The method according to claim 1 or 2,
And a touch sensor disposed under the cover layer,
Wherein the position of the touch is detected by the touch sensor.
3. The method according to claim 1 or 2,
When the touch having a predetermined pressure is input to the cover layer, the cover layer and the display panel are bent,
And the electrical characteristics output from the pressure sensor vary as the cover layer and the display panel are warped.
3. The method according to claim 1 or 2,
Wherein the plurality of pressure sensors are disposed adjacent to the fingerprint recognition sensor.
3. The method according to claim 1 or 2,
Wherein the electrical characteristic is a capacitance value.
9. The method of claim 8,
Wherein the pressure sensor comprises a pressure electrode,
Wherein the pressure electrode is disposed on one plane or a plurality of planes.
10. The method of claim 9,
And a reference potential layer disposed at a predetermined distance from the pressure electrode.
A cover layer having a display area and an input area contained within the display area;
A display panel disposed below the display area;
A fingerprint recognition sensor disposed under the input region and recognizing a fingerprint input to the input region; And
And a pressure sensor disposed below the display panel and disposed adjacent to the fingerprint recognition sensor,
Detecting a magnitude of a pressure of the touch input to the input region from an electrical characteristic output from the pressure sensor when a predetermined touch is input to the input region,
Wherein the function corresponding to the input area is executed when the magnitude of the detected pressure is equal to or greater than a predetermined value and the user is authenticated by the fingerprint recognition sensor.

Images