KR20200095315A - Display device and method for providing haptic interface of the same - Google Patents

Abstract

Provided are a display device capable of improving the quality of a touch felt by a user and a haptic interface providing method thereof. The display device comprises: a display panel; a touch sensing unit disposed on a first surface of the display panel and sensing touch input of a user; and a first vibration device disposed on the second surface of the display panel and generating vibration according to driving voltages, wherein the first vibration device generates a first vibration to provide a first haptic interface in response to first touch input of the user.

Description

Display device and its method of providing a haptic interface {DISPLAY DEVICE AND METHOD FOR PROVIDING HAPTIC INTERFACE OF THE SAME}

The present invention relates to a display device and a method of providing a haptic interface thereof.

As the information society develops, demands for display devices for displaying images are increasing in various forms. For example, display devices are applied to various electronic devices such as smart phones, digital cameras, notebook computers, navigation systems, and smart televisions.

The display device may provide a haptic interface to deliver a tactile sensation to a user. The display device may include a vibration device to provide a haptic interface. However, due to the vibration remaining after the display device provides the haptic interface, the quality of the tactile feeling felt by the user may be lowered.

It is an object to be solved by the present invention to provide a display device capable of improving the quality of tactile sense felt by a user when providing a haptic interface.

Another problem to be solved by the present invention is to provide a method of providing a haptic interface for a display device capable of improving the quality of a tactile sense felt by a user.

The problems of the present invention are not limited to the problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The display device according to an exemplary embodiment for solving the above problem includes a display panel, a touch sensing unit disposed on a first surface of the display panel, sensing a user's touch input, and a second surface of the display panel. And a first vibration device that is disposed and generates vibration according to driving voltages, and the first vibration device generates a first vibration to provide a first haptic interface in response to a user's first touch input.

The first vibration device generates a second vibration to provide a second haptic interface in response to a user's second touch input, and the first vibration may be different from the second vibration.

The first frequency of the first vibration and the second frequency of the second vibration may be different.

The first amplitude of the first vibration and the second amplitude of the second vibration may be different.

The first period of the first vibration and the second period of the second vibration may be different.

When the second touch input is a multi-touch input, the second frequency of the second vibration is higher than the first frequency of the first vibration, and the second amplitude of the second vibration is greater than the first amplitude of the first vibration. It can be big.

The first vibration device generates a third vibration to provide a third haptic interface in response to a user's third touch input, and the third vibration may be different from the first vibration and the second vibration.

When the second touch input includes two touch inputs and the third touch input includes three touch inputs, the third frequency of the third vibration is higher than the second frequency of the second vibration, and the The third amplitude of the third vibration may be greater than the second amplitude of the second vibration.

The amplitude of the first vibration may increase N (N is an integer of 2 or more) times.

The amplitude of the first vibration may increase N times and then decrease M (M is an integer greater than or equal to 2) times.

N and M can be the same.

The amplitude of the first vibration may decrease M times.

Each of the driving voltages may be applied as a square wave.

The first vibration device includes a first electrode to which a first driving voltage is applied among the driving voltages, a second electrode to which a second driving voltage is applied among the driving voltages, and between the first electrode and the second electrode. It is disposed, and may include a vibration layer having a piezoelectric material that contracts or expands according to a first driving voltage applied to the first electrode and a second driving voltage applied to the second electrode.

A display device according to an exemplary embodiment for solving the above problem is a display panel, a touch sensing unit disposed on a first surface of the display panel, and sensing a user's touch input, and disposed on a second surface of the display panel And a first vibration device that generates vibration according to driving voltages, and a second vibration device that is disposed on a second surface of the display panel and generates vibration according to driving voltages, and the first The vibration device is disposed closer to one side of the display panel than the second vibration device, and the second vibration device is disposed closer to the other side of the display panel than the first vibration device, and the first vibration device And at least one of the second vibration device may generate vibration to provide a first haptic interface in response to the first touch input.

When the first touch input is closer to the first vibration device than the second vibration device, the first vibration device generates the vibration, and the first touch input is applied to the second vibration device rather than the first vibration device. When adjacent, the second vibration device may generate the vibration.

In a mono acoustic mode, a mono sound is output by the vibration of the first vibration device and the vibration of the second vibration device, and a first stereo sound is output by the vibration of the first vibration device in a stereo sound mode. , A second stereo sound may be output by the vibration of the second vibration device.

A method of providing a haptic interface of a display device according to an exemplary embodiment for solving the above problem includes a first touch input of a user detected by a touch sensing unit disposed on a first surface of the display panel. Generating a first vibration by a first vibration device disposed on a second surface, and generating a second vibration by the first vibration generating device in response to a second touch input of a user, One vibration is different from the second vibration.

The first frequency of the first vibration and the second frequency of the second vibration may be different.

The first amplitude of the first vibration and the second amplitude of the second vibration may be different.

The first period of the first vibration and the second period of the second vibration may be different.

Specific details of other embodiments are included in the detailed description and drawings.

According to the display device and the method of providing a haptic interface thereof according to an exemplary embodiment, when the vibration device is a piezoelectric element or piezoelectric actuator including a piezoelectric material, since a voice coil is not included, a linear resonance actuator that vibrates using the voice coil and In comparison, there is almost no vibration remaining after the application of the first and second driving voltages is terminated. Therefore, it is possible to increase the quality of the tactile sense that the user feels in the haptic interface.

According to the display device and the method for providing a haptic interface thereof according to an exemplary embodiment, the user's immersion in the application can be increased by providing different haptic interfaces to the user according to the user's touch input in the application.

According to the display device and the method of providing a haptic interface thereof according to an exemplary embodiment, a haptic interface is provided by using a vibration device adjacent to a user's touch coordinates among a plurality of vibration devices, thereby further enhancing the quality of a user's sense of touch.

The effects according to the embodiments are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a perspective view showing a display device according to an exemplary embodiment.
2 is an exploded perspective view of a display device according to an exemplary embodiment.
3 is a bottom view illustrating an example of a display panel attached to the cover window of FIG. 2.
4 is a bottom view illustrating an example of a bracket attached to a lower portion of the display panel of FIG. 3 and a main circuit board disposed on the bracket.
5 is a cross-sectional view showing an example of I-I' of FIG. 3.
6 is a cross-sectional view illustrating a display area of the display panel of FIG. 5 in detail.
7 is a cross-sectional view showing the first vibration device of FIG. 5 in detail.
8 is an exemplary view showing a method of vibrating a vibration layer disposed between a first branch electrode and a second branch electrode of the first vibration device of FIG. 7.
9 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment.
10 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 9.
11 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment.
12 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 11.
13 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment.
14 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 13.
15 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment.
16 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 15.
17 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment.
18 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 17.
19 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment.
20 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 19.
21 is a flowchart illustrating a haptic mode and an acoustic mode of a display device according to an exemplary embodiment.
22 is a bottom view illustrating an example of a display panel attached to the cover window of FIG. 2.
23 is a perspective view of a display device showing an example of a multi-haptic interface.
24 is a flowchart illustrating a haptic mode of a display device according to an exemplary embodiment.
25 is a flowchart illustrating an acoustic mode of a display device according to an exemplary embodiment.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the general knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is only defined by the scope of the claims.

An element or layer being referred to as the "on" of another element or layer includes all cases in which another layer or other element is interposed immediately above or in between. The same reference numerals refer to the same components throughout the specification. The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for describing the embodiments are exemplary, and the present invention is not limited to the illustrated matters.

Although the first, second, and the like are used to describe various elements, it goes without saying that these elements are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical spirit of the present invention.

Each of the features of the various embodiments of the present invention may be partially or wholly combined or combined with each other, technically various interlocking and driving may be possible, and each of the embodiments may be independently implemented with respect to each other or may be implemented together in an associative relationship. It might be.

1 is a perspective view showing a display device according to an exemplary embodiment. 2 is an exploded perspective view of a display device according to an exemplary embodiment.

1 and 2, the display device 10 according to an exemplary embodiment includes a cover window 100, a display panel 300, a display circuit board 310, a display driving circuit 320, and a flexible film 390. ), a first vibration device 510, a bracket 600, a main circuit board 700, and a lower cover 900.

In this specification, “upper” refers to a direction in which the cover window 100 is arranged with respect to the display panel 300, that is, the Z-axis direction, and “lower” refers to the bracket 600 with respect to the display panel 300. It indicates the direction in which it is arranged, that is, the direction opposite to the Z-axis direction. In addition, “left”, “right”, “upper”, and “lower” indicate a direction when the display panel 300 is viewed from a plane. For example, “Left” refers to the opposite direction of the X-axis direction, “Right” refers to the X-axis direction, “Up” refers to the Z-axis direction, and “Bottom” refers to the opposite direction of the Z-axis direction.

The display device 10 may be formed in a rectangular shape on a plane. For example, the display device 10 may have a rectangular planar shape having a short side in a first direction (X-axis direction) and a long side in a second direction (Y-axis direction) as shown in FIGS. 1 and 2. A corner where the short side in the first direction (X-axis direction) and the long side in the second direction (Y-axis direction) meet may be rounded to have a predetermined curvature or may be formed at a right angle. The planar shape of the display device 10 is not limited to a rectangle, and may be formed in another polygon, circle or oval shape.

The display device 10 may include a first region DR1 formed to be flat and a second region DR2 extending from left and right sides of the first region DR1. The second region DR2 may be formed to be flat or curved. When the second region DR2 is formed flat, an angle formed between the first region DR1 and the second region DR2 may be an obtuse angle. When the second region DR2 has a curved surface, it may have a constant curvature or a varying curvature.

1 illustrates that the second region DR2 extends from each of the left and right sides of the first region DR1, but is not limited thereto. That is, the second area DR2 may extend only on one of the left and right sides of the first area DR1. Alternatively, the second area DR2 may extend in at least one of the upper and lower sides as well as the left and right sides of the first area DR1. Hereinafter, a description will be made focusing on the second area DR2 disposed on the left and right edges of the display device 10.

The cover window 100 may be disposed above the display panel 300 to cover the top surface of the display panel 300. For this reason, the cover window 100 may function to protect the top surface of the display panel 300.

The cover window 100 may include a transmissive portion DA100 corresponding to the display panel 300 and a light blocking portion NDA100 corresponding to an area other than the display panel 300. The cover window 100 may be disposed in the first area DR1 and the second area DR2. The transmission part DA100 may be disposed in a part of the first region DR1 and a part of the second region DR2. The light blocking portion NDA100 may be formed to be opaque. Alternatively, the light blocking unit NDA100 may be formed of a decor layer in which a pattern that can be shown to a user is formed when an image is not displayed.

The display panel 300 may be disposed under the cover window 100. The display panel 300 may be disposed to overlap the transparent portion DA100 of the cover window 100. The display panel 300 may be disposed in the first area DR1 and the second area DR2. For this reason, the image of the display panel 300 may be viewed in not only the first area DR1 but also the second areas DR2.

The display panel 300 may be a light emitting display panel including a light emitting element. For example, the display panel 300 includes an organic light emitting display panel using an organic light emitting diode including an organic light emitting layer, a micro light emitting diode display panel using a micro LED, and a quantum dot emission layer. It may be a quantum dot light emitting display panel using an included quantum dot light emitting diode (Quantum dot Light Emitting Diode), or an inorganic light emitting display panel using an inorganic light emitting device including an inorganic semiconductor. Hereinafter, description will be made focusing on that the display panel 300 is an organic light emitting display panel.

A display circuit board 310 and a display driving circuit 320 may be attached to one side of the display panel 300. One end of the display circuit board 310 may be attached on pads provided on one side of the display panel 300 using an anisotropic conductive film. The display circuit board 310 is flexible with a flexible printed circuit board (FPCB), a rigid printed circuit board (PCB), or a rigid printed circuit board that is hard to bend. It may be a composite printed circuit board including all of the printed circuit boards.

The display driving circuit 320 receives control signals and power voltages through the display circuit board 310, generates and outputs signals and voltages for driving the display panel 300. The display driving circuit 320 may be formed of an integrated circuit (IC) and attached to the display circuit board 310, but is not limited thereto. For example, the display driving circuit 320 may be attached on the display panel 300 by a chip on glass (COG) method, a chip on plastic (COP) method, or an ultrasonic method.

A touch driver 330 and a vibration driver 340 may be disposed on the display circuit board 310. The touch driver 330 and the vibration driver 340 may be formed of an integrated circuit.

The touch driver 330 may be attached to the upper surface of the display circuit board 310. The touch driver 330 may be electrically connected to sensor electrodes of the touch sensor layer of the display panel 300 through the display circuit board 310. The touch driver 330 applies touch driving signals to the driving electrodes among the sensor electrodes, and detects changes in charge of capacitances between the driving electrodes and the sensing electrodes through the sensing electrodes among the sensor electrodes. Whether or not it is close to each other can be determined. The user's touch refers to direct contact of an object such as a user's finger or a pen to one surface of the display device 10 disposed on the touch sensing layer TSL. The user's proximity indicates that an object such as a user's finger or a pen is placed apart on one surface of the display device 10. The touch driver 330 may output touch data including the user's touch coordinates to the main processor 710.

The vibration driver 340 may be attached to the upper surface of the display circuit board 310. The vibration driver 340 receives vibration data or sound data from the main circuit board 700. The vibration driver 340 generates first and second driving voltages according to vibration data or sound data and outputs them to the first vibration device 510. The vibration driver 340 may be formed of an integrated circuit.

The first and second driving voltages may be applied as a sine wave or a square wave. In this case, when the first and second driving voltages are applied in a square wave, the user can clearly receive different haptic interfaces even if different haptic interfaces are continuously implemented using the first vibration device 510.

A power supply for supplying display driving voltages for driving the display driving circuit 320 may be disposed on the display circuit board 310. When the display driving voltages and the first and second driving voltages are generated in one circuit, they may be influenced by each other. However, the display driving voltages for driving the display panel 300 and the first and second driving voltages for driving the first vibration device 510 may be generated by different circuits. Therefore, it is possible to prevent the display driving voltages and the first and second driving voltages from being influenced by each other.

One side of the flexible film 390 may be attached to the upper surface of the display panel 300 from the lower side of the display panel 300 using an anisotropic conductive film. The other side of the flexible film 390 may be attached on the upper surface of the display circuit board 310 from the upper side of the display circuit board 310 using an anisotropic conductive film. The flexible film 390 may be a flexible film that can be bent.

Meanwhile, the flexible film 390 may be omitted, and the display circuit board 310 may be directly attached to one side of the display panel 300. In this case, one side of the display panel 300 may be bent toward the lower surface of the display panel 300 and disposed.

A first vibration device 510 may be disposed on one surface of the display panel 300. As shown in FIG. 5, the first vibration device 510 may be attached to one surface of the display panel 300 by using an adhesive member 610 such as a pressure sensitive adhesive. When the lower panel member 400 is disposed on one surface of the display panel 300 as shown in FIG. 3, the first vibration device 510 may be attached to the lower panel member 400 through the adhesive member 610. I can. The first vibration device 510 may be a piezoelectric element or a piezoelectric actuator including a piezoelectric material that contracts or expands according to an applied voltage. 2 illustrates that the first vibration device 510 has a rectangular parallelepiped shape, but is not limited thereto.

The bracket 600 may be disposed under the display panel 300. The bracket 600 may include plastic, metal, or both plastic and metal. In the bracket 600, a first camera hole CMH1 into which the camera device 720 is inserted, a battery hole BH in which the battery 790 is disposed, and a cable 314 connected to the display circuit board 310 pass. A cable hole CAH may be formed.

The main circuit board 700 and the battery 790 may be disposed under the bracket 600. The main circuit board 700 may be a printed circuit board or a flexible printed circuit board.

The main circuit board 700 may include a main processor 710, a camera device 720, a main connector 730, and a memory 740. The main processor 710 may be formed of an integrated circuit.

The camera device 720 is disposed on both the upper and lower surfaces of the main circuit board 700, the main processor 710 and the memory 740 are disposed on the upper surface of the main circuit board 700, and the main connector 730 is It may be disposed on the lower surface of the main circuit board 700.

The main processor 710 may control all functions of the display device 10. For example, the main processor 710 may output digital video data to the display driving circuit 320 through the display circuit board 310 so that the display panel 300 displays an image. In addition, the main processor 710 receives touch data including a user's touch coordinates from the touch driver 330, determines whether the user touches or is close, and then performs an operation corresponding to the user's touch input or proximity input. You can do it. For example, the main processor 710 may execute an application or perform an operation indicated by an icon touched by a user.

The main processor 710 may control the first vibration device 510 according to the haptic mode and the sound mode. The main processor 710 may output motion information executed by a user's touch input or proximity input in the haptic mode to the memory 740 and receive vibration data corresponding to the motion information from the memory 740. The main processor 710 may output vibration data to the vibration driver 340 in the haptic mode.

The main processor 710 receives sound source data from the outside in the sound mode. The main processor 710 may generate sound data for generating first and second driving voltages for driving the vibration device 510 based on sound source data in the sound mode. Alternatively, the main processor 710 may output frequency information of the sound source data to the memory 740 in the sound mode, and receive sound data corresponding to the frequency information of the sound source data from the memory 740. The main processor 710 may output sound data to the vibration driver 340 in the sound mode.

The main processor 710 may control the first vibration device 510 so that the acoustic mode and the haptic mode are simultaneously executed. In this case, the main processor 710 may add the sound data and the vibration data and output the sum to the vibration driving unit 340.

The main processor 710 may be an application processor made of an integrated circuit, a central processing unit, or a system chip.

The camera device 720 processes an image frame such as a still image or a moving image obtained by an image sensor in a camera mode and outputs it to the main processor 710.

A cable 314 passing through the cable hole CAH of the bracket 600 may be connected to the main connector 730. For this reason, the main circuit board 700 may be electrically connected to the display circuit board 310.

The memory 740 may store vibration data according to motion information executed by a user's touch input or proximity input. The memory 740 may be a look-up table for outputting vibration data using the operation information as an input address. Also, the memory 740 may store sound data according to frequency information of the sound source data. The memory 740 may be a look-up table for outputting sound data using the frequency information as an input address.

The battery 790 may be disposed not to overlap with the main circuit board 700 in the third direction (Z-axis direction). The battery 790 may overlap the battery hole BH of the bracket 600.

In addition, the main circuit board 700 may be further equipped with a mobile communication module capable of transmitting and receiving a wireless signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include a voice signal, a video call signal, or various types of data according to transmission and reception of text/multimedia messages.

The lower cover 900 may be disposed under the main circuit board 700 and the battery 790. The lower cover 900 may be fastened to the bracket 600 to be fixed. The lower cover 900 may form the lower surface of the display device 10. The lower cover 900 may include plastic, metal, or both plastic and metal.

A second camera hole CMH2 through which a lower surface of the camera device 720 is exposed may be formed in the lower cover 900. The location of the camera device 720 and the locations of the first and second camera holes CMH1 and CMH2 corresponding to the camera device 720 are not limited to the embodiment shown in FIG. 2.

3 is a bottom view illustrating an example of a display panel attached to the cover window of FIG. 2. 4 is a bottom view illustrating an example of a bracket attached to a lower portion of the display panel of FIG. 3 and a main circuit board disposed on the bracket.

3 and 4, a lower panel member 400 may be disposed under the display panel 300. The lower panel member 400 may be attached to the lower surface of the display panel 300 through an adhesive member. The adhesive member may be a pressure sensitive adhesive (PSA).

The lower panel member 400 includes at least one of a light absorbing member for absorbing light incident from the outside, a buffer member for absorbing external shock, and a heat dissipating member for efficiently dissipating heat from the display panel 300. Can include.

The light absorbing member may be disposed under the display panel 300. The light absorbing member prevents the transmission of light to prevent components disposed under the light absorbing member, for example, the display circuit board 310, the vibration device 510, etc. from being visually recognized from the upper portion of the display panel 300 . The light absorbing member may include a light absorbing material such as black pigment or dye.

The buffer member may be disposed under the light absorbing member. The buffer member absorbs an external shock and prevents the display panel 300 from being damaged. The buffer member may be made of a single layer or a plurality of layers. For example, the cushioning member is formed of a polymer resin such as polyurethane, polycarbonate, polypropylene, polyethylene, etc., or foam-molded rubber, urethane-based material, or acrylic material. It may include a material having elasticity such as a sponge. The cushioning member may be a cushion layer.

The heat dissipation member may be disposed under the buffer member. The heat dissipation member may include a first heat dissipation layer including graphite or carbon nanotubes, and a second heat dissipation layer formed of a metal thin film such as copper, nickel, ferrite, or silver that can shield electromagnetic waves and has excellent thermal conductivity.

Meanwhile, the lower panel member 400 may be omitted, and in this case, a configuration disposed on the lower surface of the lower panel member 400, for example, the display circuit board 310 and the vibration device 510 It may be disposed on the lower surface of the display panel 300 instead of the lower surface of the 400 ).

The flexible film 390 attached to one side of the display panel 300 may be bent as shown in FIG. 3 and may be disposed under the lower panel member 400. Therefore, the display circuit board 310 attached to one side of the flexible film 390 may be disposed under the lower panel member 400. The display circuit board 310 may be fixed or adhered to the lower surface of the lower panel member 400 by a fixing member such as a screw or an adhesive member such as a pressure sensitive adhesive under the lower panel member 400.

The display circuit board 310 may include a first circuit board 311 and a second circuit board 312. Each of the first circuit board 311 and the second circuit board 312 may be a rigid printed circuit board or a flexible printed circuit board. When one of the first circuit board 311 and the second circuit board is a rigid printed circuit board and the other is a flexible printed circuit board, the display circuit board 310 may be a composite printed circuit board.

3 illustrates that the second circuit board 312 extends from one side of the first circuit board 311 in the second direction (Y-axis direction). The width of the second circuit board 312 in the first direction (X-axis direction) may be smaller than the width of the first circuit board 311 in the first direction (X-axis direction).

The touch driver 330 and the vibration driver 340 may be disposed on one surface of the second circuit board 312, and the first connector 313 and the second connector 316 may be disposed on the other surface. The first connector 313 may include an insertion part connected to a first connection terminal provided at one end of the cable 314. The second connector 316 may include an insertion part connected to a connection terminal provided at one end of the first flexible circuit board 570.

The first connection terminal provided at one end of the cable 314 may be inserted into the insertion portion of the first connector 313. The second connection terminal provided at the other end of the cable 314 is bent to the bottom of the main circuit board 700 through a cable hole (CAH) penetrating the bracket 600 as shown in FIG. 4 to insert the main connector 730. Can be inserted into

A first vibration device 510 may be disposed on a lower surface of the lower panel member 400. The first vibration device 510 may be attached to the lower surface of the panel lower member 400 by a first adhesive member 610 such as a pressure sensitive adhesive. Accordingly, the display panel 300 may vibrate in the thickness direction (Z-axis direction) by the first vibration device 510.

The connection terminal provided at one end of the first flexible circuit board 570 may be inserted into the insertion portion of the second connector 316. The other end of the first flexible circuit board 570 may be connected to the first vibration device 510. The first flexible circuit board 570 may be a flexible printed circuit board or a flexible printed circuit (FPC).

The bracket 600 may include a battery hole BH, a cable hole CAH, and a first camera hole CMH1. The battery hole BH, the cable hole CAH, and the first camera hole CMH1 may be holes passing through the bracket 600.

Since the battery hole BH is a hole for accommodating a battery, the battery 790 may overlap the battery hole BH in the third direction (Z-axis direction) as shown in FIG. 5. The size of the battery hole BH may be larger than the size of the battery 790 as shown in FIG. 5.

Since the first camera hole CMH1 of the bracket 600 is a hole for accommodating the camera device 720 of the main circuit board 700, the camera device 720 is the first camera in the third direction (Z-axis direction). It may overlap with the hole CMH1.

3 to 5, the first vibration device 510 may be electrically connected to the display circuit board 310 through the first flexible circuit board 570. The main circuit board 700 and the display circuit board 310 may be electrically connected to the main circuit board 700 and the display circuit board 310 through a cable 314.

5 is a cross-sectional view showing an example of Ⅰ-Ⅰ' of FIG. 3.

Referring to FIG. 5, the display panel 300 may include a substrate SUB1, a pixel array layer PAL, and a polarizing film PF.

The substrate SUB1 may be a rigid substrate or a flexible substrate capable of bending, folding, rolling, or the like. The substrate SUB1 may be made of an insulating material such as glass, quartz, or polymer resin. Examples of polymeric materials include polyethersulphone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylenenapthalate (PEN), Polyethyleneterepthalate (PET), polyphenylenesulfide (PPS), polyallylate, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT) , Cellulose acetate propionate (CAP) or a combination thereof. The substrate SUB1 may include a metal material.

The pixel array layer PAL may be disposed on the substrate SUB1. The pixel array layer PAL may be a layer that displays an image including pixels PX. The pixel array layer PAL may include a thin film transistor layer 303, a light emitting device layer 304, and a thin film encapsulation layer 305 as shown in FIG. 6.

A polarizing film PF may be disposed on the pixel array layer PAL to prevent a decrease in visibility due to reflection of external light. The polarizing film PF may include a linear polarizing plate and a phase delay film such as a λ/4 plate. For example, a phase delay film may be disposed on the pixel array layer PAL, and a linear polarizing plate may be disposed between the phase delay film and the cover window 100.

The lower panel member 400 may be disposed on the first surface of the display panel 300, and the cover window 100 may be disposed on the second surface opposite to the first surface. That is, the lower panel member 400 may be disposed on the lower surface of the substrate SUB1 of the display panel 300, and the cover window 100 may be disposed on the upper surface of the polarizing film PF.

One side of the flexible film 390 may be attached to one side of the substrate SUB1 and the other side may be attached to one side of the display circuit board 310. One side of the flexible film 390 may be attached to one side of the substrate SUB1 using an anisotropic conductive film. The other side of the flexible film 390 may be attached to one surface of the display circuit board 310 using an anisotropic conductive film. The other surface of the display circuit board 310 that is opposite to one surface of the display circuit board 310 may face the lower panel member 400.

5 illustrates that the display driving circuit 320 is disposed on one surface of the flexible film 390, but is not limited thereto. The display driving circuit 320 may be disposed on the other surface of the flexible film 390 that is opposite to one surface. The other surface of the flexible film 390 may be a surface attached to one surface of the substrate SUB1 and one surface of the display circuit board 310.

A display circuit board 310 may be disposed on a lower surface of the lower panel member 400. The display circuit board 310 may be fixed to the lower surface of the panel lower member 400 by a fixing member such as a screw or an adhesive member.

The touch driver 330 and the vibration driver 340 may be disposed on one surface of the display circuit board 310. The first connector 313 and the second connector 316 may be disposed on the other surface of the display circuit board 310.

The first vibration device 510 may be disposed between the lower panel member 400 and the bracket 600. The first surface of the first vibration device 510 may be attached to the lower panel member 400 by the first adhesive member 610. Since the first vibration device 510 may be fixed to the lower panel member 400, the display panel 300 may be vibrated by the vibration of the first vibration device 510. That is, the first vibration device 510 may vibrate the display panel 300 to output a first sound. The first adhesive member 610 may be a pressure sensitive adhesive. A first flexible circuit board 570 may be attached to the second surface of the first vibration device 510.

When the first vibration device 510 is disposed on the heat radiation member of the lower panel member 400, the first heat radiation layer of the heat radiation member may be broken by vibration of the first vibration device 510. Therefore, in the region where the first vibration device 510 is disposed, the heat dissipation member may be removed, and the first vibration device 510 may be attached to the lower surface of the buffer member. Alternatively, in the region where the first vibration device 510 is disposed, the buffer member and the heat dissipation member may be removed, and the first vibration device 510 may be attached to the lower surface of the light absorbing member.

The first flexible circuit board 570 may be attached to the second surface of the first vibration device 510 using an anisotropic conductive film. Lead lines of the first flexible circuit board 570 may be connected to the first electrode and the second electrode of the first vibration device 510, respectively. A connection terminal provided at one end of the first flexible circuit board 570 may be connected to lead lines. The connection terminal of the first flexible circuit board 570 may be inserted into the insertion portion of the second connector 316. The first flexible circuit board 570 may be a flexible printed circuit (FPC) or a flexible film.

6 is a cross-sectional view illustrating a display area of the display panel of FIG. 5 in detail.

Referring to FIG. 6, the display panel 300 may include a substrate SUB1 and a pixel array layer PAL. The pixel array layer PAL may include a thin film transistor layer 303, a light emitting device layer 304, and a thin film encapsulation layer 305 as shown in FIG. 6.

A buffer layer 302 may be formed on the substrate SUB1. The buffer layer 302 may be formed on the substrate SUB1 to protect the thin film transistors 335 and the light emitting devices from moisture penetrating through the substrate SUB1 vulnerable to moisture permeation. The buffer layer 302 may be formed of a plurality of inorganic layers that are alternately stacked. For example, the buffer layer 302 may be formed as a multilayer in which one or more inorganic layers of a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), and SiON are alternately stacked. The buffer layer may be omitted.

A thin film transistor layer 303 is formed on the buffer layer 302. The thin film transistor layer 303 includes thin film transistors 335, a gate insulating film 336, an interlayer insulating film 337, a protective film 338, and a planarization film 339.

Each of the thin film transistors 335 includes an active layer 331, a gate electrode 332, a source electrode 333, and a drain electrode 334. 6 illustrates that the thin film transistor 335 is formed in an upper gate (top gate) method in which the gate electrode 332 is positioned above the active layer 331, it should be noted that the present invention is not limited thereto. That is, the thin film transistors 335 have a lower gate (bottom gate) method in which the gate electrode 332 is located under the active layer 331 or the gate electrode 332 is formed on the upper and lower portions of the active layer 331. It may be formed in a double gate method that is located in both.

An active layer 331 is formed on the buffer layer 302. The active layer 331 may be formed of a silicon-based semiconductor material or an oxide-based semiconductor material. For example, the active layer 331 may be formed of polysilicon, amorphous silicon, or oxide semiconductor. A light blocking layer for blocking external light incident on the active layer 331 may be formed between the buffer layer 302 and the active layer 331.

A gate insulating layer 336 may be formed on the active layer 331. The gate insulating layer 336 may be formed of an inorganic layer, for example, a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), or multiple layers thereof.

A gate electrode 332 and a gate line may be formed on the gate insulating layer 336. The gate electrode 332 and the gate line are any of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu). It may be formed as a single layer or multiple layers made of one or an alloy thereof.

An interlayer insulating layer 337 may be formed on the gate electrode 332 and the gate line. The interlayer insulating layer 337 may be formed of an inorganic layer, for example, a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), or multiple layers thereof.

A source electrode 333, a drain electrode 334, and a data line may be formed on the interlayer insulating layer 337. Each of the source electrode 333 and the drain electrode 334 may be connected to the active layer 331 through a contact hole penetrating the gate insulating layer 336 and the interlayer insulating layer 337. The source electrode 333, the drain electrode 334, and the data line are molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd). And it may be formed of a single layer or multiple layers made of any one of copper (Cu) or an alloy thereof.

A protective layer 338 for insulating the thin film transistor 335 may be formed on the source electrode 333, the drain electrode 334, and the data line. The protective layer 338 may be formed of an inorganic layer, for example, a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), or multiple layers thereof.

A planarization layer 339 for flattening a step due to the thin film transistor 335 may be formed on the passivation layer 338. The planarization film 339 may be formed of an organic film such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin. have.

A light emitting element layer 304 is formed on the thin film transistor layer 303. The light emitting element layer 304 includes light emitting elements and a pixel defining layer 344.

The light emitting elements and the pixel defining layer 344 are formed on the planarization layer 339. The light emitting device is exemplified as an organic light emitting device including an anode electrode 341, light emitting layers 342, and a cathode electrode 343.

The anode electrode 341 may be formed on the planarization layer 339. The anode electrode 341 may be connected to the source electrode 333 of the thin film transistor 335 through a contact hole penetrating the passivation layer 338 and the planarization layer 339.

The pixel defining layer 344 may be formed to cover the edge of the anode electrode 341 on the planarization layer 339 to partition the pixels PX. That is, the pixel defining layer 344 serves as a pixel defining layer defining the pixels PX. In each of the pixels PX, an anode electrode 341, a light emitting layer 342, and a cathode electrode 343 are sequentially stacked so that holes from the anode electrode 341 and electrons from the cathode electrode 343 are transferred to the light emitting layer 342 ) Represents a region that is combined with each other to emit light.

Emission layers 342 are formed on the anode electrode 341 and the pixel defining layer 344. The emission layer 342 may be an organic emission layer. The emission layer 342 may emit one of red light, green light, and blue light. Alternatively, the emission layer 342 may be a white emission layer emitting white light, and in this case, a red emission layer, a green emission layer, and a blue emission layer may be stacked, and may be a common layer formed in common with the pixels PX. have. In this case, the display panel 300 may further include separate color filters for displaying red, green, and blue colors.

The emission layer 342 may include a hole transporting layer, a light emitting layer, and an electron transporting layer. In addition, the emission layer 342 may be formed in a tandem structure of two or more stacks, and in this case, a charge generation layer may be formed between the stacks.

The cathode electrode 343 is formed on the emission layer 342. The second electrode 343 may be formed to cover the emission layer 342. The second electrode 343 may be a common layer commonly formed in the pixels PX.

When the light emitting device layer 304 is formed in a top emission method that emits light in an upward direction, the anode electrode 341 is a laminated structure of aluminum and titanium (Ti/Al/Ti), and a laminated structure of aluminum and ITO (ITO/Al/ITO), APC alloy, and a laminated structure of APC alloy and ITO (ITO/APC/ITO). APC alloys are alloys of silver (Ag), palladium (Pd), and copper (Cu). In addition, the cathode electrode 263 is a transparent metallic material (TCO, Transparent Conductive Material) such as ITO and IZO that can transmit light, or magnesium (Mg), silver (Ag), or magnesium (Mg) and silver (Ag). ) May be formed of a semi-transmissive conductive material such as an alloy. When the cathode electrode 343 is formed of a transflective metal material, light emission efficiency may be increased due to microcavities.

When the light-emitting element layer 304 is formed in a bottom emission method that emits light in a downward direction, the anode electrode 341 is a transparent metallic material (TCO) or magnesium (Mg) such as ITO or IZO. , Silver (Ag), or may be formed of a semi-transmissive conductive material such as an alloy of magnesium (Mg) and silver (Ag). The second electrode 343 is a laminated structure of aluminum and titanium (Ti/Al/Ti), a laminated structure of aluminum and ITO (ITO/Al/ITO), an APC alloy, and a laminated structure of APC and ITO (ITO/APC /ITO) can be formed of a highly reflective metal material. When the anode electrode 341 is formed of a semi-transmissive metal material, light emission efficiency may be increased due to microcavities.

A thin film encapsulation layer 305 is formed on the light emitting device layer 304. The thin film encapsulation layer 305 serves to prevent penetration of oxygen or moisture into the light emitting layer 342 and the cathode electrode 343. To this end, the thin film encapsulation layer 305 may include at least one inorganic layer. The inorganic film may be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide. In addition, the thin film encapsulation layer 305 may further include at least one organic layer. The organic layer may be formed to have a sufficient thickness to prevent particles from penetrating the thin film encapsulation layer 305 and being injected into the light emitting layer 342 and the cathode electrode 343. The organic film may include any one of epoxy, acrylate, or urethane acrylate.

A touch sensor layer may be formed on the thin film encapsulation layer 305. When the touch sensor layer is directly formed on the thin film encapsulation layer 305, there is an advantage in that the thickness of the display device 10 can be reduced compared to when a separate touch panel is attached to the thin film encapsulation layer 305.

The touch sensor layer may include sensor electrodes for sensing a user's touch in a capacitive manner, and touch lines connecting the pads and the sensor electrodes. For example, the touch sensor layer may sense a user's touch using a self-capacitance method or a mutual capacitance method.

7 is a cross-sectional view showing the first vibration device of FIG. 5 in detail. 8 is an exemplary view showing a method of vibrating a vibration layer disposed between a first branch electrode and a second branch electrode of the second vibration device of FIG. 7.

7 and 8, the first vibration device 510 is a piezoelectric element (壓電素子) for vibrating the display panel 300 using a piezoelectric material that contracts or expands according to an applied voltage. It may be a piezoelectric actuator. The first vibration device 510 may include a vibration layer 511, a first electrode 512, and a second electrode 513.

The first electrode 512 may include a first stem electrode 5121 and first branch electrodes 5122. The first stem electrode 5121 may be disposed on at least one side of the vibration layer 511 as shown in FIG. 7. Alternatively, the first stem electrode 5121 may be disposed through a part of the vibration layer 511. The first stem electrode 5121 may be disposed on the upper surface of the vibration layer 511. The first branch electrodes 5122 may be branched from the first stem electrode 5121. The first branch electrodes 5122 may be disposed parallel to each other.

The second electrode 513 may include a second stem electrode 5131 and second branch electrodes 5132. The second electrode 513 may be disposed apart from the first electrode 512. Accordingly, the second electrode 513 may be electrically separated from the first electrode 512. The second stem electrode 5131 may be disposed on at least one side of the vibration layer 511. In this case, the first stem electrode 5121 may be disposed on the first side of the vibration layer 511, and the second stem electrode 5131 may be disposed on the second side of the vibration layer 511. Alternatively, the second stem electrode 5131 may be disposed through a part of the vibration layer 511. The second stem electrode 5131 may be disposed on the upper surface of the vibration layer 511. The second branch electrodes 5132 may be branched from the second stem electrode 5131. The second branch electrodes 5132 may be disposed parallel to each other.

The first branch electrodes 5122 and the second branch electrodes 5132 may be disposed parallel to each other in a horizontal direction (X-axis direction or Y-axis direction). Also, the first branch electrodes 5122 and the second branch electrodes 5132 may be alternately disposed in the vertical direction (Z-axis direction). That is, the first branch electrodes 5122 and the second branch electrodes 5132 are the first branch electrodes 5122, the second branch electrodes 5132, and the first branch electrodes 5122 in the vertical direction (Z-axis direction). , The second branch electrodes 5132 may be repeatedly disposed in the order.

The first electrode 512 and the second electrode 513 may be connected to pads of the second flexible circuit board 570. Pads of the second flexible circuit board 570 may be connected to the first electrode 512 and the second electrode 513 exposed on one surface of the first vibration device 510.

The vibration layer 511 may be a piezoelectric element that is deformed according to a driving voltage applied to the first electrode 512 and a driving voltage applied to the second electrode 513. In this case, the vibration layer 511 may be any one of a piezoelectric material such as a polyvinylidene fluoride (PVDF) film or a PZT (Plumbum Ziconate Titanate), or an electroactive polymer.

Since the manufacturing temperature of the vibration layer 511 is high, the first electrode 512 and the second electrode 513 may be formed of silver (Ag) having a high melting point or an alloy of silver (Ag) and palladium (Pd). In order to increase the melting point of the first electrode 512 and the second electrode 513, when the first electrode 512 and the second electrode 513 are formed of an alloy of silver (Ag) and palladium (Pd), The content of silver (Ag) may be higher than the content of palladium (Pd).

The vibration layer 511 may be disposed between the first branch electrodes 5122 and the second branch electrodes 5132. The vibration layer 511 contracts or expands according to a difference between a driving voltage applied to the first branch electrode 5122 and a driving voltage applied to the second branch electrode 5132.

7, when the polarity direction of the vibration layer 511 disposed between the first branch electrode 5122 and the second branch electrode 5132 disposed under the first branch electrode 5122 is the upper direction (↑) , The vibration layer 511 may have a positive polarity in an upper region adjacent to the first branch electrode 5122 and a negative polarity in a lower region adjacent to the second branch electrode 5132. In addition, when the polarity direction of the vibration layer 511 disposed between the second branch electrode 5132 and the first branch electrode 5122 disposed under the second branch electrode 5132 is the downward direction (↓), the vibration layer The 511 may have a negative polarity in an upper region adjacent to the second branch electrode 5132, and may have a positive polarity in a lower region adjacent to the first branch electrode 5122. The polarity direction of the vibration layer 511 may be determined by a polling process in which an electric field is applied to the vibration layer 511 using the first branch electrode 5122 and the second branch electrode 5132.

As shown in FIG. 8, when the polarity direction of the vibration layer 511 disposed between the first branch electrode 5122 and the second branch electrode 5132 disposed under the first branch electrode 5122 is the upper direction (↑) , When a positive driving voltage is applied to the first branch electrode 5122 and a negative driving voltage is applied to the second branch electrode 5122, the vibration layer 511 may contract according to the first force F1. have. The first force F1 may be a contractile force. In addition, when a negative driving voltage is applied to the first branch electrode 5122 and a positive driving voltage is applied to the second branch electrode 5122, the vibration layer 511 expands according to the second force F2. I can. The second force F2 may be an elongation force.

Similar to FIG. 8, the polarity direction of the vibration layer 511 disposed between the second branch electrode 5132 and the first branch electrode 5122 disposed under the second branch electrode 5132 is a downward direction (↓) In the case of, when a positive driving voltage is applied to the second branch electrode 5132 and a negative driving voltage is applied to the first branch electrode 5122, the vibration layer 511 may expand according to the elongation force. In addition, when a negative driving voltage is applied to the second branch electrode 5132 and a positive driving voltage is applied to the first branch electrode 5122, the vibration layer 511 may contract according to the contraction force.

When the driving voltage applied to the first electrode 512 and the driving voltage applied to the second electrode 513 are alternately repeated in positive and negative polarities, the vibration layer 511 repeatedly contracts and expands. Accordingly, the first vibration device 510 vibrates. Since the first vibration device 510 is disposed on one surface of the heat dissipation film 130, when the vibration layer 511 of the first vibration device 510 contracts and expands, the display panel 300 is displayed by stress. It vibrates in a third direction (Z-axis direction), which is the thickness direction of the panel 300. In this way, when the display panel 300 vibrates by the first vibration device 510, the first sound may be output.

A protective layer 519 may be additionally disposed on the second surface and side surfaces of the first vibration device 510. The protective layer 519 may be formed of an insulating material, or may be formed of the same material as the vibration layer 511. The protective layer 519 may be disposed on the first electrode 512, the second electrode 513, and the vibration layer 511 exposed without being covered by the first electrode 512 and the second electrode 513. . The protective layer 519 may be disposed to surround the exposed vibration layer 511 without being covered by the first electrode 512, the second electrode 513, and the first electrode 512 and the second electrode 513. I can. Therefore, the vibration layer 511, the first electrode 512, and the second electrode 513 of the first vibration device 510 may be protected by the protective layer 519. The protective layer 519 may be omitted.

7 and 8, when the first vibration device 510 is a piezoelectric element or piezoelectric actuator including a piezoelectric material, since it does not include a voice coil, linear resonance vibrates using the voice coil. Compared with an actuator (Linear Resonant Actuator, LRA), there is an advantage that there is almost no vibration remaining after the application of the first and second driving voltages is terminated. Therefore, it is possible to increase the quality of the tactile sense that the user feels in the haptic interface.

9 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment. 9 illustrates a method of providing a haptic interface according to a game situation and a user's touch input when a display device is running an application for a car racing game. 10 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 9.

Referring to FIGS. 9 and 10, the display device 10 provides different haptic interfaces to the user according to the progress of the application and the user's touch input in the application, thereby increasing the user's immersion in the application.

The display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 52 and a frequency of 46 Hz for 298 ms when counting the start of racing in an application for a car racing game. At this time, the first vibration device 510 may vibrate while increasing the amplitude four times during the 298 ms period and then decreasing the amplitude four times. The first vibration device 510 may rise four times with the same amplitude at the same interval and may fall four times with the same amplitude at the same interval. 9 illustrates that the number of times of rising and falling of the amplitude is four times, but is not limited thereto. The number of times the amplitude increases may be N (N is a positive integer) times, and the number of times the amplitude decreases may be M times (M is a positive integer) times.

The display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 66 and a frequency of 62 Hz for 736 ms when a vehicle starts in an application for a car racing game.

When a user touches the first acceleration icon AI1 in an application for a car racing game, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 60 and a frequency of 203 Hz for 98 ms. In this case, the first vibration device 510 may vibrate while increasing the amplitude three times during 98 ms. In this case, the first vibration device 510 may rise three times with the same amplitude at the same interval. 9 illustrates that the number of times of increasing the amplitude is 3, but the present invention is not limited thereto. The number of times the amplitude rises may be N times.

When the user touches the second acceleration icon AI2 in an application for a car racing game, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 60 and a frequency of 203 Hz for 201 ms. When the user touches the second acceleration icon AI2, the vibration period of the first vibration device 510 may be longer than when the user touches the first acceleration icon AI1. In FIG. 9, when the user touches the first acceleration icon AI1, the frequency and maximum amplitude of the first vibration device 510 are the frequency and the maximum amplitude of the first vibration device 510 when the second acceleration icon AI2 is touched. The same as the maximum amplitude is illustrated, but is not limited thereto. When the user touches the first acceleration icon AI1, the frequency and maximum amplitude of the first vibration device 510 are, when the second acceleration icon AI2 is touched, the frequency and maximum amplitude of the first vibration device 510 It can be different. Also, in this case, the first vibration device 510 may vibrate while increasing its amplitude five times during 201 ms. In this case, the first vibration device 510 may rise five times with the same amplitude at the same interval.

The display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 50 and a frequency of 148 Hz for 47 ms when a vehicle collides with another vehicle or object in an application for a car racing game. In this case, the first vibration device 510 may vibrate while the amplitude increases once for a period of 47 ms and then decreases once the amplitude. The first vibration device 510 may rise once with the same amplitude at the same interval and may fall once with the same amplitude at the same interval. 9 illustrates that the number of times of rising and falling of the amplitude is one, but is not limited thereto. The number of times the amplitude increases may be N times, and the number of times the amplitude decreases may be M times.

The display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 52 and a frequency of 46 Hz for 725 ms when a vehicle drifts in an application for a car racing game. In this case, the first vibration device 510 may vibrate while the amplitude increases once for a period of 725 ms and then decreases once the amplitude. The first vibration device 510 may rise once with the same amplitude at the same interval and may fall once with the same amplitude at the same interval. 9 illustrates that the number of times of rising and falling of the amplitude is one, but is not limited thereto. The number of times the amplitude increases may be N times, and the number of times the amplitude decreases may be M times.

The display device 10 may vibrate the first vibration device 510 at a maximum amplitude of 59 and a frequency of 15 Hz for 2500 ms when the vehicle is stopped in an application for a car racing game.

According to the embodiments shown in FIGS. 9 and 10, when a user performs a first touch input of touching the first acceleration icon AI1, the display device 10 provides a first haptic interface. The first vibration may be generated by using the vibration device 510. In addition, when a user performs a second touch input of touching the second acceleration icon AI2, the display device 10 provides a second haptic interface different from the first haptic interface. A second vibration different from the first vibration may be generated by using. For example, as shown in FIG. 9, the period of the second vibration may be longer than the period of the first vibration. In this case, when the user performs a second touch input touching the second acceleration icon AI2, vibration is generated for a longer time than when the first touch input touching the first acceleration icon AI1 is performed. I can feel it. In addition, the user may feel that the effect of car acceleration executed by the touch of the second acceleration icon AI2 in the application for a car racing game is higher than the effect of car acceleration executed by the touch of the first acceleration icon AI1.

Meanwhile, in FIG. 9, only the period of the first vibration and the period of the second vibration are different, and the frequency and amplitude of the first vibration are the same as the frequency and amplitude of the second vibration, but are not limited thereto. For example, the frequency, amplitude, and duration of the first vibration may be different from the frequency, amplitude, and duration of the second vibration, respectively. Alternatively, the frequency and amplitude of the first vibration may be different from the frequency and amplitude of the second vibration, respectively. Alternatively, the frequency and period of the first vibration may be different from the frequency and period of the second vibration, respectively. Alternatively, the amplitude and duration of the first vibration may be different from the amplitude and duration of the second vibration, respectively. Alternatively, the frequency of the first vibration may be different from the frequency of the second vibration. Alternatively, the amplitude of the first vibration may be different from the amplitude of the second vibration.

As described above, the user may feel that the first vibration and the second vibration are different due to a change in at least one of the frequency, amplitude, and period of the vibration.

11 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment. 11 illustrates a method of providing a haptic interface according to a user's touch input when a display device is executing a piano keyboard application. 12 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 11.

11 and 12, the display device 10 provides different haptic interfaces to the user according to the user's touch input in the application, thereby increasing the user's immersion in the application.

When a user touches one piano key in a piano key application, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 26 and a frequency of 78 Hz for 153 ms. When a user touches two piano keys simultaneously in a piano key application, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 32 and a frequency of 109 Hz for 109 ms. The display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 45 and a frequency of 125 Hz for 96 ms when a user touches three piano keys simultaneously in a piano key application.

11 and 12, when a user performs a single touch input of touching one piano key, the display device 10 includes a first vibration device 510 to provide a first haptic interface. ) Can be used to generate the first vibration. In addition, when a user performs a multi-touch input of simultaneously touching two piano keys, the display device 10 uses the first vibration device 510 to provide a second haptic interface different from the first haptic interface. A second vibration different from the first vibration may be generated. For example, as shown in FIG. 11, the frequency of the second vibration may be higher than the frequency of the first vibration, and the amplitude of the second vibration may be greater than the amplitude of the first vibration. In this case, the user may feel that when the second touch input of touching two piano keys at the same time is performed, a stronger vibration occurs than when the first touch input of touching one of the piano keys is performed.

Furthermore, when a user performs a multi-touch input of simultaneously touching three piano keys, the display device 10 includes a first vibration device to provide a first haptic interface and a third haptic interface different from the second haptic interface. Using 510, a third vibration different from the first vibration and the second vibration may be generated. For example, as shown in FIG. 11, the frequency of the third vibration may be higher than that of the second vibration, and the amplitude of the third vibration may be greater than the amplitude of the second vibration. In this case, when the user performs a third touch input in which three piano keys are touched at the same time, the user may feel that a stronger vibration is generated than when a second touch input in which two piano keys are touched is performed.

Meanwhile, in FIG. 11, the period of the first vibration is longer than the period of the second vibration, and the period of the second vibration is longer than the period of the third vibration, but is not limited thereto. For example, the period of the first vibration may be shorter than the period of the second vibration, and the period of the second vibration may be shorter than the period of the third vibration.

As described above, the user may feel that the first vibration, the second vibration, and the third vibration are different due to a change in at least one of the frequency, amplitude, and period of the vibration.

13 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment. 13 illustrates a method of providing a haptic interface according to a user's touch input when a display device is executing a memo application. 14 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 13.

13 and 14, the display device 10 provides different haptic interfaces to the user according to the user's touch input in the application, thereby increasing the user's immersion in the application.

When the user touches the pencil icon PI1 in the memo application, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 10 and a frequency of 218 Hz for 18 ms. When the user touches the pen icon PI2 in the memo application, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 23 and a frequency of 203 Hz for 19 ms. When the user touches the eraser icon EI in the memo application, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 36 and a frequency of 78 Hz for 51 ms.

13 and 14, when the user performs a first touch input of touching the pencil icon PI1, the display device 10 is a first vibration device to provide a first haptic interface. The first vibration may be generated by using 510. In addition, when a user performs a second touch input of touching the pen icon PI2, the display device 10 uses the first vibration device 510 to provide a second haptic interface different from the first haptic interface. Thus, a second vibration different from the first vibration may be generated. Furthermore, when a user performs a third touch input of touching the eraser icon EI, the display device 10 provides a first haptic interface and a third haptic interface different from the second haptic interface. The device 510 may be used to generate a third vibration different from the first vibration and the second vibration. The frequency, amplitude, and duration of the first vibration, the frequency, amplitude, and duration of the second vibration, and the frequency, amplitude, and duration of the third vibration may be different, respectively.

As described above, the user may feel that the first vibration, the second vibration, and the third vibration are different due to a change in at least one of the frequency, amplitude, and period of the vibration.

15 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment. 15 illustrates a method of providing a haptic interface according to a user's touch input when a display device is executing a keyboard application. 16 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 15.

15 and 16, the display device 10 provides different haptic interfaces to the user according to the user's touch input in the application, thereby increasing the user's immersion in the application.

When the user touches the enter key (EK) or the space key (SK) in a keyboard application, the display device 10 can vibrate the first vibration device 510 with a maximum amplitude of 97 and a frequency of 148 Hz for 26 ms. have. When a user touches a letter key (LK) or a number key (NK) in a keyboard application, the display device 10 can vibrate the first vibration device 510 with a maximum amplitude of 84 and a frequency of 156 Hz for 6 ms. have.

According to the embodiments shown in FIGS. 15 and 16, when a user performs a first touch input of touching the enter key EK or the space key SK, the display device 10 provides a first haptic interface. To do this, a first vibration may be generated using the first vibration device 510. In addition, when a user performs a second touch input with a letter key (LK) or a number key (NK), the display device 10 includes a first vibration device in order to provide a second haptic interface different from the first haptic interface. 510) may be used to generate a second vibration different from the first vibration. The frequency, amplitude, and duration of the first vibration and the frequency, amplitude, and duration of the second vibration may be different, respectively.

As described above, the user may feel that the first vibration and the second vibration are different due to a change in at least one of the frequency, amplitude, and period of the vibration.

17 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment. 17 illustrates a method of providing a haptic interface according to a user's touch input when a display device is executing an environment setting application including volume control, luminance control, color control, and screen zoom control. 18 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 17.

Referring to FIGS. 17 and 18, the display device 10 provides different haptic interfaces to the user according to the user's touch input in the application, thereby increasing the user's immersion in the application.

The display device 10 may increase or decrease the volume by dragging the volume control in the environment setting application, and may vibrate the first vibration device 510 according to the user's volume control. For example, a period of vibration of the first vibration device 510 may be determined from 10 to 25 ms, a maximum amplitude may be determined from 10 to 60, and a frequency may be determined from 78 to 195 Hz.

The display device 10 may increase or decrease the luminance by dragging the luminance control in the environment setting application, and may vibrate the first vibration device 510 according to the user's luminance adjustment. For example, the period of vibration of the first vibration device 510 is set to 18 ms, the maximum amplitude is set to 15 to 85, and the frequency may be set to 109 Hz.

The display device 10 may change the color by dragging the color adjustment in the environment setting application, and may vibrate the first vibration device 510 according to the color adjustment of the user. For example, the period of vibration of the first vibration device 510 is set to 12 ms, the maximum amplitude is set to 15 to 85, and the frequency may be set to 78 to 156 Hz.

The display device 10 may enlarge or reduce the screen by dragging the screen zoom control by the user in the environment setting application, and may vibrate the first vibration device 510 according to the screen zoom control of the user. For example, the period of the vibration of the first vibration device 510 is set to 16 ms, the maximum amplitude is set to 15 to 40, and the frequency may be set to 125 Hz.

According to the embodiments shown in FIGS. 17 and 18, when a user performs a first touch input of dragging volume control, the display device 10 includes a first vibration device 510 to provide a first haptic interface. The first vibration may be generated by using. In addition, when a user performs a second touch input for dragging luminance adjustment, the display device 10 uses the first vibration device 510 to provide a second haptic interface different from the first haptic interface. A second vibration different from the vibration may be generated. In addition, when a user performs a third touch input for dragging color adjustment, the display device 10 includes the first vibration device 510 to provide a third haptic interface different from the first haptic interface and the second haptic interface. A third vibration different from the first vibration and the second vibration may be generated by using.

Furthermore, when the user performs a fourth touch input of dragging the screen zoom control, the display device 10 provides a first haptic interface, a second haptic interface, and a fourth haptic interface different from the third haptic interface. The first vibration, the second vibration, and the fourth vibration different from the third vibration may be generated by using the first vibration device 510. The frequency, amplitude, and duration of the first vibration, the frequency, amplitude, and duration of the second vibration, the frequency, amplitude, and duration of the third vibration, and the frequency, amplitude, and duration of the fourth vibration may be different, respectively. .

As described above, the user may feel that the first vibration, the second vibration, the third vibration, and the fourth vibration are different due to a change in at least one of the frequency, amplitude, and period of the vibration.

19 is a table showing a method of providing a haptic interface in a display device according to an exemplary embodiment. 19 illustrates a method of providing a haptic interface according to a user's touch input when the display device is executing an image editing application. 20 is an exemplary view showing an application execution screen of the display device provided with the haptic interface of FIG. 19.

19 and 20, the display device 10 provides different haptic interfaces to the user according to the user's touch input in the application, thereby increasing the user's immersion in the application.

When a user performs a touch to enlarge an image in an image editing application, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 66 and a frequency of 195 Hz for 10 ms. The display device 10 may vibrate the first vibration device 510 at a maximum amplitude of 60 and a frequency of 125 Hz for 16 ms when a user performs a touch to reduce an image in an image editing application.

In addition, in the image editing application, when a user performs a touch of dragging an image upward, the display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 34 and a frequency of 125 Hz for 144 ms. In this case, the first vibration device 510 may vibrate while increasing the amplitude for 128 ms out of 144 ms. The display device 10 may vibrate the first vibration device 510 with a maximum amplitude of 34 and a frequency of 125 Hz for 144 ms when the user performs a touch of dragging the image downward in the image editing application. In this case, the first vibration device 510 may vibrate while the amplitude decreases for 124 ms out of 144 ms.

According to the embodiments shown in FIGS. 19 and 20, when a user performs a first touch input to enlarge an image, the display device 10 uses the first vibration device 510 to provide a first haptic interface. The first vibration may be generated by using. In addition, when a user performs a second touch input for reducing an image, the display device 10 uses the first vibration device 510 to provide a second haptic interface different from the first haptic interface. It may generate a second vibration different from the. In addition, when the user performs a third touch input of dragging an image upward, the display device 10 includes the first vibration device 510 to provide a third haptic interface different from the first haptic interface and the second haptic interface. A third vibration different from the first vibration and the second vibration may be generated by using. Furthermore, when a user performs a fourth touch input of dragging an image down, the display device 10 provides a first haptic interface, a second haptic interface, and a fourth haptic interface different from the third haptic interface. The first vibration, the second vibration, and the fourth vibration different from the third vibration may be generated by using the first vibration device 510. The frequency, amplitude, and duration of the first vibration, the frequency, amplitude, and duration of the second vibration, the frequency, amplitude, and duration of the third vibration, and the frequency, amplitude, and duration of the fourth vibration may be different, respectively. .

As described above, the user may feel that the first vibration, the second vibration, the third vibration, and the fourth vibration are different due to a change in at least one of the frequency, amplitude, and period of the vibration.

21 is a flowchart illustrating a haptic mode and an acoustic mode of a display device according to an exemplary embodiment.

Referring to FIG. 21, the display device 10 may provide a haptic interface in a haptic mode using a vibration device 510 and output sound in an acoustic mode.

First, the main processor 710 outputs motion information executed by a user's touch input or proximity input in the haptic mode to the memory 740, and inputs vibration data corresponding to the motion information from the memory 740 I can receive it. The main processor 710 may output vibration data to the vibration driver 340 in the haptic mode.

The vibration driver 340 may generate the first A driving voltage and the 2 A driving voltage according to the vibration data in the haptic mode. The vibration driving unit 340 is a digital signal processor (DSP) that processes vibration data, which is digital data, and a digital signal processor (DSP) that converts vibration data output from the digital signal processing unit into an analog signal, a driving voltage of 1A and a driving voltage of B. It may include a digital analog converter (DAC), and an amplifier (AMP) for amplifying and outputting the driving voltage 1A and driving voltage 1B. The vibration driver 340 outputs the 1A driving voltage and the 2A driving voltage to the first vibration device 510. (S101, S102 in Fig. 21)

Second, the first vibration device 510 provides a haptic interface by vibrating according to the driving voltage 1A and the driving voltage 2A in the haptic mode. Since the first vibration device 510 is attached to the display panel 300, the display panel 300 may be vibrated by the vibration of the first vibration device 510. The frequency of the vibration of the first vibration device 510 varies according to the AC frequency of the driving voltage 1A and the driving voltage 2A, and the amplitude varies according to the magnitudes of the driving voltage 1A and the driving voltage 2A. It may vary depending on the period in which the 1A driving voltage and the 2A driving voltage are applied. The vibration of the first vibration device 510 may be varied by adjusting the frequency, amplitude, and period according to the first driving voltage and the second driving voltage. (S103 in Fig. 21)

Third, the main processor 710 receives sound source data from the outside in the sound mode. The main processor 710 may generate sound data for generating first and second driving voltages for driving the first vibration device 510 based on sound source data in the sound mode. Alternatively, the main processor 710 may output frequency information of the sound source data to the memory 740 in the sound mode, and receive sound data corresponding to the frequency information of the sound source data from the memory 740. The main processor 710 may output sound data to the vibration driver 340 in the sound mode. While vibration data includes data of only one frequency, acoustic data may include data of a plurality of frequencies.

The vibration driving unit 340 may generate a first B driving voltage and a second B driving voltage according to sound data in the sound mode. The vibration driver 340 outputs the 1B driving voltage and the 2B driving voltage to the first vibration device 510. (S104, S105 in Fig. 21)

Fourth, the first vibration device 510 vibrates according to the first B driving voltage and the second B driving voltage in the acoustic mode to output sound. Since the first vibration device 510 is attached to the display panel 300, the display panel 300 may be vibrated by the vibration of the first vibration device 510. That is, the display panel 300 may be used as a vibration surface for outputting sound. (S106 in Fig. 21)

According to the embodiment illustrated in FIG. 21, the display device 10 may provide a haptic interface in a haptic mode using the vibration device 510 and output sound in an acoustic mode.

In addition, the display device 10 may simultaneously execute the acoustic mode and the haptic mode using the first vibration device 510. In this case, the main processor 710 outputs the sum data obtained by adding the acoustic data and the vibration data to the vibration driver 340, and the vibration driver 340 generates sum driving voltages according to the sum data to generate the first vibration device ( 510). The first vibration device 510 may vibrate according to the summation driving voltages to simultaneously provide a sound and a haptic interface to a user.

22 is a bottom view illustrating an example of a display panel attached to the cover window of FIG. 2.

The embodiment shown in FIG. 22 differs from the embodiment shown in FIG. 3 in that the second vibration device 520 is disposed on one surface of the display panel 300. In FIG. 22, descriptions overlapping with the embodiment shown in FIG. 3 are omitted.

Referring to FIG. 22, the second vibration device 520 may be attached to one surface of the display panel 300 by using an adhesive member 610 such as a pressure sensitive adhesive. When the lower panel member 400 is disposed on one surface of the display panel 300, the second vibration device 520 may be attached to the lower panel member 400 through the adhesive member 610.

The second vibrating device 520 may be a piezoelectric element or a piezoelectric actuator including a piezoelectric material that contracts or expands according to an applied voltage. 22 illustrates that the second vibration device 520 has a rectangular parallelepiped shape, but is not limited thereto. The second vibration device 510 may be disposed adjacent to the upper side of the display panel 300, and the second vibration device 520 may be disposed adjacent to the lower side of the display panel 300.

A third connector 317 may be disposed on one surface of the display circuit board 310. The third connector 317 may include an insertion part connected to a connection terminal provided at one end of the second flexible circuit board 580.

The connection terminal provided at one end of the second flexible circuit board 580 may be inserted into the insertion portion of the third connector 317. The other end of the second flexible circuit board 580 may be connected to the second vibration device 520. The second flexible circuit board 580 may be a flexible printed circuit board or a flexible printed circuit (FPC).

According to the embodiment shown in FIG. 22, not only the first vibration device 510 but also the second vibration device 520 may be used to output a haptic interface and sound. Therefore, a haptic interface can be provided using the first vibration device 510 and the second vibration device 520 as shown in FIG. 23.

First, when a single touch input is detected, the display device 10 uses a vibration device adjacent to the touch coordinates of the single touch input among the first vibration device 510 and the second vibration device 520 to display a haptic interface. Can provide. (S201 to S204 in Fig. 24)

Specifically, when a single touch input is detected, the main processor 710 determines which of the first vibration device 510 and the second vibration device 520 is close to the touch coordinate, and the touch coordinate and the distance are Choose a vibrating device near you. The main processor 710 may output motion information executed by a user's touch input or proximity input to the memory 740 and receive vibration data corresponding to the motion information from the memory 740. The main processor 710 may output vibration data to the vibration driver 340.

The vibration driver 340 may generate a first A driving voltage and a 2 A driving voltage according to the vibration data. The vibration driver 340 outputs the 1A driving voltage and the 2A driving voltage to a vibration device selected from among the first vibration device 510 and the second vibration device 520.

The vibration device selected in the haptic mode provides a haptic interface by vibrating according to the 1A driving voltage and the 2A driving voltage. By providing a haptic interface in a vibration device adjacent to the user's touch coordinates, the quality of the touch felt by the user may be further improved.

Second, when a multi-touch input including a plurality of touch inputs occurring at the same time is detected, the display device 10 not only provides a first haptic interface using the first vibration device 510, but also provides a second A second haptic interface may be provided by using the vibration device 520. (S205 to S208 in Fig. 24)

Specifically, when a multi-touch input is detected, the main processor 710 outputs, to the memory 740, first motion information executed by a user's first touch input or a first proximity input, and the first motion information Vibration data corresponding to may be input from the memory 740. The main processor 710 outputs second motion information executed by a user's second touch input or a second proximity input in the haptic mode to the memory 740, and transmits vibration data corresponding to the second motion information to the memory ( 740). The main processor 710 outputs vibration data corresponding to the first motion information as first vibration data to the vibration driving unit 340 in the haptic mode, and outputs the vibration data corresponding to the second motion information as the second vibration data. It can be output to 340.

The vibration driver 340 may generate a first driving voltage of 1A and a driving voltage of 2A according to the first vibration data, and may generate a driving voltage of 1B and a driving voltage of 2B according to the second vibration data. The vibration driver 340 outputs the 1A driving voltage and the 2A driving voltage to the first vibration device 510, and outputs the 1B driving voltage and the 2B driving voltage to the second vibration device 520.

Meanwhile, the main processor 710 determines that the first touch coordinates corresponding to the first touch input or the first proximity input and the second touch coordinates corresponding to the second touch input or the second proximity input correspond to the first vibration device 510. It may be determined which of the second vibration devices 520 is close to. Accordingly, the vibration driver 340 outputs the 1A driving voltage and the 2A driving voltage according to the first vibration data to the vibration device close to the first touch coordinates, and the second vibration data to the vibration device close to the second touch coordinates. The 1B driving voltage and the 2B driving voltage according to may be output. In this case, since the vibration device close to the first touch coordinate can provide the first haptic interface and the vibration device close to the second touch coordinate can provide the second haptic interface, the quality of the touch that the user feels can be further improved.

Third, the display device 10 may output a mono sound using the first vibration device 510 and the second vibration device 520 in the mono sound mode. (S301 to S303 in Fig. 25)

Specifically, the main processor 710 receives sound source data from the outside in a mono sound mode. The main processor 710 generates mono acoustic data for generating first and second driving voltages that drive the first vibration device 510 and the second vibration device 520 based on the sound source data in the mono acoustic mode. can do. Alternatively, the main processor 710 may output frequency information of sound source data to the memory 740 in a mono sound mode, and may receive sound data corresponding to the frequency information of the sound source data from the memory 740. The main processor 710 may output mono sound data to the vibration driver 340 in the mono sound mode.

The vibration driver 340 may generate a 1C driving voltage and a 2C driving voltage according to mono sound data in a mono sound mode. The vibration driver 340 outputs the 1C driving voltage and the 2C driving voltage to the first vibration device 510 and the second vibration device 520.

Each of the first vibration device 510 and the second vibration device 520 outputs sound by vibrating according to the first C driving voltage and the second C driving voltage in the mono sound mode. Since each of the first vibration device 510 and the second vibration device 520 outputs the same sound, the display device 10 may output a mono sound.

Fourth, the display device 10 may output stereo sound using the first vibration device 510 and the second vibration device 520 in a stereo sound mode. (S304 to S306 in Fig. 25)

Specifically, the main processor 710 receives sound source data including first stereo source data and second stereo source data from outside in a stereo sound mode. The main processor 710 includes first stereo sound data and a second vibration device for generating first and second driving voltages for driving the first vibration device 510 based on the first stereo source data in a stereo sound mode. Second stereo sound data for generating first and second driving voltages driving 520 may be generated.

Alternatively, the main processor 710 outputs frequency information of the first stereo source data to the memory 740 in a stereo sound mode, and stores first stereo sound data corresponding to the frequency information of the first stereo source data to the memory 740 ) Can be input. The main processor 710 outputs frequency information of the second stereo source data to the memory 740 in a stereo sound mode, and transmits second stereo sound data corresponding to the frequency information of the second stereo source data from the memory 740. Input can be received.

The main processor 710 may output the first stereo sound data and the second stereo sound data to the vibration driver 340 in the stereo sound mode.

The vibration driver 340 may generate a 1D driving voltage and a 2D driving voltage according to the first stereo sound data in a stereo sound mode. The vibration driver 340 outputs the 1D driving voltage and the 2D driving voltage to the first vibration device 510.

The vibration driver 340 may generate a 1E driving voltage and a 2E driving voltage according to the second stereo sound data in a stereo sound mode. The vibration driver 340 outputs the 1E driving voltage and the 2E driving voltage to the second vibration device 520.

In the stereo sound mode, the first vibration device 510 outputs a first stereo sound by vibrating according to the 1D driving voltage and the 2D driving voltage, and the second vibration device 520 drives the 1E driving voltage and the 2E driving voltage. The second stereo sound may be output by vibrating according to the voltage.

According to the embodiment shown in FIG. 22, the display device 10 provides a haptic interface in a haptic mode using the first vibration device 510 and the second vibration device 520, and provides a mono sound in the mono sound mode. Output, and stereo sound can be output in stereo sound mode.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, a person skilled in the art to which the present invention pertains may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. You will understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

10: display device 100: cover window
300: display panel 310: display circuit board
320: display driving circuit 330: touch driving circuit
340: first acoustic driver 400: panel lower cover
510: first vibration device 511: vibration layer
512: first electrode 121: first stem electrode
5122: first branch electrode 513: second electrode
5131: second stem electrode 5132: second branch electrode
570: first flexible circuit board 600: bracket
700: main circuit board 710: main processor
720: camera device 730: main connector
740: memory 790: battery
900: lower cover

Claims (21)

Display panel;
A touch sensing unit disposed on the first surface of the display panel and sensing a user's touch input; And
A first vibration device disposed on the second surface of the display panel and generating vibration according to driving voltages,
The first vibration device generates a first vibration to provide a first haptic interface in response to a user's first touch input. According to claim 1,
The first vibration device generates a second vibration to provide a second haptic interface in response to a user's second touch input,
The first vibration is different from the second vibration. The method of claim 2,
The first frequency of the first vibration and the second frequency of the second vibration are different from each other. The method of claim 2,
The first amplitude of the first vibration and the second amplitude of the second vibration are different from each other. The method of claim 2,
The first period of the first vibration and the second period of the second vibration are different from each other. The method of claim 2,
When the second touch input is a multi-touch input, the second frequency of the second vibration is higher than the first frequency of the first vibration, and the second amplitude of the second vibration is greater than the first amplitude of the first vibration. Large display device. The method of claim 6,
The first vibration device generates a third vibration to provide a third haptic interface in response to a user's third touch input,
The third vibration is different from the first vibration and the second vibration. The method of claim 7,
When the second touch input includes two touch inputs and the third touch input includes three touch inputs, the third frequency of the third vibration is higher than the second frequency of the second vibration, and the A display device in which the third amplitude of the third vibration is greater than the second amplitude of the second vibration. According to claim 1,
A display device in which the amplitude of the first vibration increases N (N is a positive integer) times. According to claim 1,
A display device in which the amplitude of the first vibration increases N times and then decreases M (M is a positive integer) times. The method of claim 7,
N and M are the same display device. According to claim 1,
A display device in which the amplitude of the first vibration falls M times. According to claim 1,
Each of the driving voltages is applied as a square wave. According to claim 1,
The first vibration device,
A first electrode to which a first driving voltage is applied among the driving voltages;
A second electrode to which a second driving voltage is applied among the driving voltages; And
A vibration layer disposed between the first electrode and the second electrode and having a piezoelectric material that contracts or expands according to a first driving voltage applied to the first electrode and a second driving voltage applied to the second electrode. Display device. Display panel;
A touch sensing unit disposed on the first surface of the display panel and sensing a user's touch input;
A first vibration device disposed on the second surface of the display panel and generating vibration according to driving voltages; And
A second vibration device disposed on the second surface of the display panel and generating vibration according to driving voltages,
The first vibration device is disposed closer to one side of the display panel than the second vibration device, and the second vibration device is disposed closer to the other side of the display panel than the first vibration device,
At least one of the first vibration device and the second vibration device generates vibration to provide a first haptic interface in response to the touch input. The method of claim 15,
When the touch input is closer to the first vibration device than the second vibration device, the first vibration device generates the vibration,
When the touch input is closer to the second vibration device than the first vibration device, the second vibration device generates the vibration. The method of claim 15,
In a mono acoustic mode, a mono sound is output by the vibration of the first vibration device and the vibration of the second vibration device,
In a stereo sound mode, a first stereo sound is output by the vibration of the first vibration device, and a second stereo sound is output by the vibration of the second vibration device. Generating a first vibration by a first vibration device disposed on a second surface of the display panel in response to a user's first touch input sensed by a touch sensing unit disposed on the first surface of the display panel ; And
Generating a second vibration by the first vibration device in response to a user's second touch input,
The first vibration is different from the second vibration, a method of providing a haptic interface of a display device. The method of claim 18,
A method of providing a haptic interface of a display device in which the first frequency of the first vibration and the second frequency of the second vibration are different. The method of claim 18,
A method of providing a haptic interface of a display device in which the first amplitude of the first vibration and the second amplitude of the second vibration are different. The method of claim 18,
A method of providing a haptic interface of a display device in which the first period of the first vibration and the second period of the second vibration are different.

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