Display device and haptic feedback display method thereof

A display device and a haptic feedback display method of the display device are provided. The display device includes a display panel including a display region, and a touch-control sensor disposed at least in the display region and used to detect a touch-control operation. The display device also includes a control unit electrically connected to at least the display panel. The control unit is used to change an operation mode of the display device, and according to the touch-control operation detected by the touch-control sensor, to adjust a display object of the display panel. The operation mode includes at least a blind operation mode. Further, the display device includes at least one button structure disposed in the display region. In the blind operation mode, a touch surface of the display device is in a raised state at a location of a button structure of the at least one button structure.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application claims the priority of Chinese patent application No. 201811118515.6, filed on Sep. 25, 2018, the entirety of which is incorporated herein by reference.

FIELD OF THE DISCLOSURE

The present disclosure generally relates to the field of display technology and, more particularly, relates to a display device and a haptic feedback display method thereof.

BACKGROUND

In an existing display device, a user has to always view the screen when performing operations on the screen. However, in certain cases it is inconvenient for the user to view the screen (e.g., the user is driving, etc.), and, thus, the user cannot perform the operation to select a corresponding function.

Therefore, there is a need to provide a display device capable of guiding the finger touch-control from the user, such that the user can perform corresponding operations without viewing the screen. The disclosed display method and display device are directed to solve one or more problems set forth above and other problems.

BRIEF SUMMARY OF THE DISCLOSURE

One aspect of the present disclosure provides a display device. The display device includes a display panel including a display region and a touch-control sensor. The touch-control sensor is disposed at least in the display region and is used to detect a touch-control operation. The display device also includes a control unit electrically connected to at least the display panel. The control unit is used to change an operation mode of the display device, and according to the touch-control operation detected by the touch-control sensor, to adjust a display object of the display panel. The operation mode includes at least a blind operation mode. Further, the display device includes at least one button structure disposed in the display region. In the blind operation mode, a touch surface of the display device is in a raised state at a location of a button structure of the at least one button structure.

Another aspect of the present disclosure provides a haptic feedback display method of a display device. The method includes providing the display device. The display device includes a display panel including a display region and a touch-control sensor. The touch-control sensor is disposed at least in the display region and is used to detect a touch-control operation. The display device also includes a control unit electrically connected to at least the display panel. The control unit is used to change an operation mode of the display device, and according to the touch-control operation detected by the touch-control sensor, to adjust a display object of the display panel. The operation mode includes at least a blind operation mode. Further, the display device includes at least one button structure disposed in the display region. In the blind operation mode, a touch surface of the display device is in a raised state at a location of a button structure of the at least one button structure. The method also includes in the blind operation mode, according to the touch-control operation performed on the button structure and detected by the touch-control sensor, determining, by the control unit, whether to activate a touch-control display function of the display panel corresponding to the button structure.

DETAILED DESCRIPTION

Similar reference numbers and letters represent similar terms in the following Figures, such that once an item is defined in one Figure, it does not need to be further discussed in subsequent Figures.

FIG. 1illustrates a schematic top view of an existing display device. Referring toFIG. 1, the existing display device includes a case01, a display panel02, and a plurality of buttons03. Each button03corresponds to a different touch-control display function of the display panel. Referring toFIG. 1, the existing display device can be used in an in-vehicle central control system, etc. In the existing display device, because the button occupies a part of the space of the display device, the space occupied by the display panel is substantially small, and the function of the display panel corresponding to each button on the display device is substantially simple. In addition, in the existing display device, when the user switches the display object on the display panel or switches the touch-control display function, the user has to view the display device. However, in practical applications, e.g., when the user is driving, it is not always convenient for the user to always view the display device.

FIG. 2illustrates a schematic top view of an exemplary display device consistent with disclosed embodiments of the present disclosure; andFIG. 3illustrates a schematic Q-Q′ sectional view of the display device inFIG. 2. Referring toFIGS. 2-3, the display device may include a display panel1, a control unit2, and at least one button structure3. The display panel1may include a display region A and a touch-control sensor4. The touch-control sensor4may be disposed at least in the display region A, and may be used to detect a touch-control operation. The control unit2may be electrically connected to at least the display panel1. The control unit2may be used to change an operation mode of the display device, and to adjust a display object of the display panel1according to the touch-control operation detected by the touch-control sensor4. The operation mode may include at least a blind operation mode. The button structure3may be disposed in the display region A. In the blind operation mode, a touch surface S1of the display device at a location of the button structure3may be in a raised state. In certain embodiments, the display device may further include a glass cover5.

In one embodiment, referring toFIGS. 2-3, the display device may include a plurality of button structures3and a plurality of touch-control sensors4. Each button structure3may be disposed in the display region A. The touch-control sensor4may be a touch-control electrode for detecting one or more of the touch-control operation and the touch location. The touch-control electrode may implement the touch-control function using one of a self-capacitance method and a mutual-capacitance method. When the touch-control sensor4detects the touch-control operation, the touch-control sensor4may have a function of detecting a touch pressure. The touch-control electrode using one of the self-capacitance method and the mutual-capacitance method is used as an example, which is not limited by the present disclosure and can be determined according to practical applications.

In the blind operation mode, the button structure3may include the raised state. The user may perform the touch-control operation on the display device according to the raised button structure3. The touch surface S1may be a surface directly touched by the user of the display device. The touch-control sensor4and the button structure3shown inFIGS. 2-3are used as an example, and the size of the touch-control sensor4and the size of the button structure3are not limited by the present disclosure. In one embodiment, the size of the touch-control sensor4may be smaller than the size of the button structure3. In another embodiment, the size of the touch-control sensor4may be equal to the size of the button structure3.

In one embodiment, in the blind operation mode, the button structure in the display region may be set as a raised structure. When it is inconvenient for the user to directly view the display panel to perform the touch-control operation, the raised button structure may provide guidance for the user. In other words, according to the guidance of the raised button structure, the user may perform the touch-control operation on the display panel by touching the raised button structure without directly viewing the display panel. Therefore, the user may still be capable of performing the operation on the display panel in a case where it is inconvenient for the user to view the display panel, thereby improving the user convenience. In addition, the button structure in the disclosed embodiments may be disposed in the display region of the display panel, and may interact with the touch-control sensor to implement the touch-control operation, which may facilitate to enrich the function corresponding to the button structure, and at the same time, to reduce the frame of the display device and increase the area of the display region of the display device, thereby improving the user experience.

In certain embodiments, referring toFIG. 3, the display device may further include the glass cover5disposed on a side of the display panel1close to the touch surface S1.

The button structure3may be disposed on a side of the glass cover5away from the display panel1, and the button structure3may have a block shape. The button structure3may be made of a hard material or an elastic material.

In one embodiment, the button structure may be disposed on the side of the glass cover away from the display panel, and, thus, the existing film layer structure inside the display panel may not desire to be modified. The disposition of the button structure on the side of the glass cover may guide the user in the blind operation mode and may be applicable to most existing display panels, thereby improving the utilization of the display panel and reducing the production cost of the display device.

In certain embodiments, referring toFIG. 3, a thickness of the button structure3in a direction perpendicular to a panel plane of the display panel1may be in a range of approximately 0.3 mm-1.0 mm.

In one embodiment, the thickness of the button structure may be substantially small. Therefore, the button structure may not affect the display performance of the display panel in a normal operation mode, and at the same time, may guide the user in the blind operation mode, thereby improving the utilization of the display panel and reducing the production cost of the display panel.

In certain embodiments, referring toFIG. 2, the display panel1may include oppositely disposed first side B1and second side B2, and oppositely disposed third side B3and fourth side B4. The button structure3may be disposed on at least one side of the display panel1.

In one embodiment, the button structure3may be disposed on any one side of the display panel1. In another embodiment, according to practical applications, the button structure3may be disposed on multiple sides of the display panel1. In one embodiment, in the in-vehicle central control system, the button structure3may be disposed on a side near the driver's seat. In another embodiment, the button structure3may be disposed on each side near the driver's seat or the passenger's seat, which is not limited by the present disclosure and may be determined according to practical applications.

In one embodiment, the button structure may be disposed on at least one side of the display panel, which may facilitate the user to touch the button structure, to improve the user experience, and at the same time, to reduce the influence on the screen display of the display panel.

In certain embodiments, referring toFIG. 2, the button structure3may be a transparent button structure. The button structure3may be made of a material including glass or plastic. In one embodiment, the button structure may be disposed on the glass cover, and the button structure may be a transparent button structure. Therefore, the display performance of the display panel may not be affected while guiding the user to perform the touch-control operation. The button structure made of the material including glass or plastic is used as an example, which is not limited by the present disclosure and may be determined according to practical applications.

In one embodiment, referring toFIGS. 2-3, a projection of the button structure3onto the panel plane of the display panel may overlap with a projection of the touch-control sensor4onto the panel plane of the display panel. In one embodiment, referring toFIG. 2, the plurality of touch-control sensors4may be evenly distributed in the display panel.

FIG. 4illustrates a schematic top view of another display device consistent with disclosed embodiments of the present disclosure. In one embodiment, referring toFIG. 4, a distribution density of the touch-control sensors4in the display region A may include at least a first distribution density p1and a second distribution density p2, and the first distribution density p1may be greater than the second distribution density p2. At least at the location of the button structure3, the distribution density of the touch-control sensors4may be the first distribution density p1.

In one embodiment, referring toFIG. 4, the density of the touch-control sensors4at the location of the button structure3may be greater than the density of the touch-control sensors4at other locations, which may increase the touch-control sensitivity at the location of the button structure and may improve the accuracy of detecting the user's touch-control operation, thereby improving the user experience.

FIG. 5illustrates another schematic Q-Q′ sectional view of the display device inFIG. 2consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIGS. 2 and 5, the display panel1may be a flexible display panel. The button structure3may be disposed on a side of the display panel away from the touch surface. The button structure3may include an actuator31, and the actuator31may include at least a raised state. When the actuator31is in the raised state, the flexible display panel at the location of the button structure3may form a protrusion. In certain embodiments, a bottom support part7and a screen support part8may be disposed under the flexible display panel11, and the touch-control sensor4and a flexible cover6may be disposed above the flexible display panel11. The bottom support part7may be disposed under the flexible display panel11, and the bottom support part7may be disposed as an entire surface for disposing a plurality of screen support parts8and a plurality of actuators31. A gap may be formed between adjacent screen support parts8to dispose the actuator31. When the actuator31is deformed, the flexible display panel11corresponding to the actuator31may be deformed to form a protrusion (a corresponding deformation, including protrusion or recessed, may be formed accompanying with the deformation of the actuator31). Under ideal conditions, a corresponding flexible display panel11above the screen support part8may not be deformed. However, in practical applications, because the actuator31is deformed, the corresponding flexible display panel at the location of the surrounding screen support parts8may be deformed to a certain extent. The deformation of the corresponding flexible display panel at the location of the screen support part8may be substantially small. The farther away from the actuator31, the smaller the deformation of the flexible display panel. The deformation of the flexible display panel at the location far away from the actuator31may be negligible. In one embodiment, the actuator31may be in a sheet form, which may facilitate to reduce a thickness of the display device.

In one embodiment, referring toFIGS. 2 and 5, in the blind operation mode, the raised actuator31may cause the flexible display panel11, the touch-control sensor4, and the flexible cover6to form protrusions, and, thus, the touch surface S1at the location of the raised actuator31may form the raised button structure3.

In certain embodiments, the upper surface of the actuator31on the side close to the flexible display panel11and the lower surface of the actuator31on the side away from the flexible display panel11may be deformed. By applying voltage signals with opposite polarity, the upper surface of the actuator31may be in a stretched state, and the lower surface of the actuator31may be in a shrunken state. In other words, the actuator may be in a raised state, and, thus, the surface of the flexible display panel11may be in the raised state. The present disclosure may merely exemplify one mode in which the actuator31is in a raised state, and the raised state of the actuator in the present disclosure may refer to a state where the deformed actuator causes the surface of the flexible display panel to form a protrusion. The type of the employed actuator, and the type of the deformation of the actuator which causes the surface of the flexible display panel to form the protrusion may not be limited by the present disclosure.

In one embodiment, the actuator may be disposed under the flexible display panel. When the actuator is in the raised state, the raised button structure may be formed on the touch surface of the flexible display panel. When it is inconvenient for the user to directly view the display panel to perform the touch-control operation, the raised button structure may provide guidance for the user. According to the guidance of the button structure, the user may perform the touch-control operation on the display panel by touching the raised button structure without directly viewing the display panel. Therefore, the user may still be capable of performing operation on the display panel in a case where it is inconvenient to view the display panel, thereby improving the user convenience.

In certain embodiments, referring toFIG. 4, in the blind operation mode, the actuator31may have a vibration state. In one embodiment, when the display device is in the blind operation mode, the actuator31may be stretched and shrunken by supplying a varying electric field to the actuator31, and, thus, the actuator31may be vibrated. The continuous vibration state of the actuator may be generally produced by providing an alternating electric field to the actuator. In one embodiment, the actuator may have a vibration state, and may provide a substantially strong haptic feedback to the user, thereby achieving the purpose of prompting the user.

FIG. 6illustrates a schematic top view of a display device consistent with disclosed embodiments of the present disclosure; andFIG. 7illustrates a schematic top view of another display device consistent with disclosed embodiments of the present disclosure. In one embodiment, referring toFIGS. 6-7, due to the presence of the actuator31, the flexible display panel11at the location of the button structure3may be deformed to form a protrusion or a recess. However, the protrusion or the recess may affect the touch-control sensor4. For example, the touch-control lead of the touch-control sensor4may be broken, or the electrical connection between the touch-control electrode and the touch-control lead employed by the touch-control sensor4may fail, etc. Therefore, the touch-control sensors4may not be disposed at a location where the button structure3is most deformed, that is, at the center location of the button structure3. In one embodiment, referring toFIG. 6, the touch-control sensors4may be disposed surrounding the periphery of the button structure3. In another embodiment, referring toFIG. 7, the touch-control sensors4may be disposed in groups at locations near the button structure3. Therefore, the influence of the deformed flexible display panel on the touch-control sensor may be reduced or eliminated to ensure the normal operation of the touch-control sensor, thereby improving the user reliability.

FIG. 8illustrates a schematic top view of another display device consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIG. 8, the at least one button structure3may be evenly distributed in the display region A.

In one embodiment, the at least one button structure3may be evenly distributed in the display region. Therefore, the distance between adjacent button structures may increase, and the button structures may be obviously distinct from each other, which may facilitate to provide touch-control guidance for the user. In addition, the at least one button structure may be evenly distributed in the display region, which may facilitate to improve the change of the display performance caused by the deformation of the display panel.

FIG. 9illustrates another schematic Q-Q′ sectional view of the display device inFIG. 2consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIG. 9, in the blind operation mode, the actuator31may further include a recessed state. When the actuator31is in the recessed state, the flexible display panel11at the location of the button structure3may form a recess.

In one embodiment, referring toFIG. 9, the actuator31may be in adhesive contact with the flexible display panel11, and, thus, the flexible display panel11may be deformed accompanying with the actuator31. In other words, when the actuator31is in a raised state, the flexible display panel11may be in a raised state; and when the actuator31is in a recessed state, the flexible display panel11may be in a recessed state. In one embodiment, in the blind operation mode, the recessed actuator31may cause the flexible display panel11, the touch sensor4, and the flexible cover6to form a recess, and, thus, the touch surface S1at the location of the recessed actuator31may form the recessed button structure3.

In certain embodiments, the upper surface of the actuator31on the side close to the flexible display panel11and the lower surface of the actuator31on the side away from the flexible display panel11may be deformed. By applying voltage signals with opposite polarity, the upper surface of the actuator31may be in a shrunken state, and the lower surface of the actuator31may be in a stretched state. Therefore, the surface of the flexible display panel11may be in the recessed state. The present disclosure may merely exemplify one mode in which the actuator31is in a recessed state, and the recessed state of the actuator in the present disclosure may refer to a state where the deformed actuator causes the surface of the flexible display panel to form a recess. The type of the employed actuator, and the type of the deformation of the actuator which causes the surface of the flexible display panel to form a recess may not be limited by the present disclosure.

In one embodiment, the actuator may be disposed under the flexible display panel. When the actuator is in the shrunken state, the recessed button structure may be formed on the touch surface of the flexible display panel. When it is inconvenient for the user to directly view the display panel to perform the touch-control operation, the recessed button structure may provide guidance for the user. According to the guidance of the recessed button structure, the user may perform the touch-control operation on the display panel by touching the recessed button structure without directly viewing the display panel. Therefore, the user may still be capable of performing operation on the display panel in a case where it is inconvenient to view the display panel, thereby improving the user convenience.

FIG. 10illustrates another schematic Q-Q′ sectional view of the display device inFIG. 2consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIG. 10, the operation mode may further include a normal operation mode. In the normal operation mode, the actuator31may be in a flat state.

In one embodiment, the display device may include a normal operation mode, and the user may directly view the display panel. In the normal operation mode, the actuator may be in a flat state, and the entire touch surface of the flexible display panel may be in a flat state, which may have a desired display performance and may improve the user experience.

FIG. 11illustrates a schematic top view of another display device consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIG. 11, the button structures3may include at least two button structures having different shapes.

In one embodiment, referring toFIG. 11, the button structures3may include a button structure301, a button structure302, a button structure303, and a button structure304. The button structure301may have a rectangle shape, the button structure302may have a circle shape, the button structure303may have a triangle shape, and the button structure304may have a ring shape. The above-described shape of the button structure is used as an example, which is not limited by the present disclosure. For example, the button structure3may have a trapezoidal shape, and a diamond shape, etc. The shape of the button structure may facilitate the user to distinguish different button structures.

In certain embodiments, referring toFIG. 8, the button structure3may correspond to at least two touch-control display functions of the display panel. In one embodiment, a same one button structure may correspond to two or more touch-control display functions. Therefore, the utilization of the button structure may be improved, the quantity of the button structures may be reduced, and the production cost of the display panel may be reduced.

FIG. 12illustrates a schematic top view of an actuator consistent with disclosed embodiments of the present disclosure;FIG. 13illustrates a schematic top view of another actuator consistent with disclosed embodiments of the present disclosure;FIG. 14illustrates a schematic top view of another actuator consistent with disclosed embodiments of the present disclosure; andFIG. 15illustrates a schematic top view of another actuator consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIGS. 12-15, because the actuator31has a different shape, the button structure3on the display panel may have a different shape. In one embodiment, the actuator31may include a metal plate311, a piezoelectric device312, and a connection wire313. The metal plate311may have a different shape, and, thus, the actuator31may have a different shape. The raised actuator31may cause the flexible display panel to form a protrusion, and the protrusion of the flexible display panel may have a same shape as the metal plate. In one embodiment, the actuator may include a piezoelectric actuator, a thin actuator, or other type of actuator. The actuator having a shape such as a triangle, a circle, a rectangle, and a parallelogram is used as an example, which is not limited by the present disclosure.

FIG. 16illustrates a schematic top view of another display device consistent with disclosed embodiments of the present disclosure; andFIG. 17illustrates a schematic top view of another display device consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIGS. 16-17, the button structure3may correspond to at least two touch-control display functions of the display panel. For example, the button structure301may correspond to a “Music” function. When the user confirms the selection of the “Music” function, the display object of the display panel may be “Music”. Correspondingly, the function corresponding to the button structure301may be “Previous”, the function corresponding to the button structure302may be “Next”, the function corresponding to the button structure303may be “Loop”, and the function corresponding to button structure304may be “Return”, etc. The above-described function is used as an example. The type of the touch-control display function corresponding to the button structure, and the quantity of the touch-control display functions corresponding to the button structure are not limited by the present disclosure.

FIG. 18illustrates a flow chart of a haptic feedback display method of a display device consistent with disclosed embodiments of the present disclosure. Referring toFIGS. 2-3,FIG. 5andFIG. 18, the present disclosure may further provide a haptic feedback display method of a display device. The haptic feedback display method may include the display device in the disclosed embodiments. The operation mode may include a blind operation mode. S2: in the blind operation mode, according to the touch-control operation performed on the button structure3and detected by the touch-control sensor4, the control unit2may determine whether to activate the touch-control display function of the display panel1corresponding to the button structure3. In one embodiment, before entering the blind operation mode, the method may further include S0: switching to the blind operation mode.

In one embodiment, the control unit may determine whether to switch to the blind operation mode or trigger the blind operation mode according to the detection result of a touch trajectory by the touch sensor. When the touch trajectory detected by the touch sensor is a preset touch trajectory, the control unit may control the operation mode of the display device to be switched to the blind operation mode or may trigger the blind operation mode. In one embodiment, if the preset touch trajectory is “√”, when the touch trajectory detected by the touch sensor is “√”, the control unit may control the operation mode of the display device to be switched to the blind operation mode, or may trigger the blind operation mode, thereby facilitating the user to switch the operation mode to the blind operation mode or to trigger the blind operation mode.

In certain embodiments, the preset touch trajectory may be set for switching between the blind operation mode and the normal operation mode or for exiting the blind operation mode. When the touch trajectory detected by the touch sensor is the preset touch trajectory, the control unit may control the operation mode of the display device to be switched from the blind operation mode to the normal operation mode, or the control unit may control the operation mode of the display device to be exited from the blind operation mode. In one embodiment, if the preset touch trajectory is “∧”, when the touch trajectory detected by the touch sensor is “∧”, the control unit may control the operation mode of the display device to be switched from the blind operation mode to the normal operation mode, or the control unit may control the operation mode of the display device to be exited from the blind operation mode. To distinguish the switching process between different operation modes, the triggering process of the operation mode, or the exiting process of the operation mode, different preset touch trajectories may be set. The preset touch trajectory is not limited by the present disclosure, and may be determined according to practical applications.

In one embodiment, the button structure in the display region may be set as a raised structure. When it is inconvenient for the user to directly view the display panel to perform the touch-control operation, the raised button structure may provide guidance for the user. In other words, according to the guidance of the raised button structure, the user may perform the touch-control operation on the display panel by touching the raised button structure without directly viewing the display panel. Therefore, the user may still be capable of performing operation on the display panel in a case where it is inconvenient to view the display panel, thereby improving the user convenience. In addition, the button structure in the disclosed embodiments may be disposed in the display region of the display panel, which may increase the area of the display region of the display device, reduce the frame of the display device, and improve the user experience.

FIG. 19illustrates a flow chart of another haptic feedback display method of a display device consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIGS. 2-3,FIG. 5andFIG. 19, the haptic feedback display method may further include S1. In the blind operation mode, according to the touch-control operation, the control unit2may provide prompt information to the user, where the prompt information may include haptic guidance feedback information and touch-control operation feedback information. The haptic guidance feedback information may be used to provide the location information of the button structure3to the user and to feedback the touch-control display function of the display panel1corresponding to the button structure3to the user. The touch-control operation feedback information may be used to feedback information confirming the activation of the display function to the user.

In one embodiment, referring toFIGS. 2-3,FIG. 5andFIG. 19, after switching to the blind operation mode, according to the detected touch-control operation, the control unit may provide the haptic guidance feedback information and the touch-control operation feedback information to the user. When the user touches the display device, after touching the raised button structure3, the user may know the location of the button structure3on the display panel. After touching the button structure3, the control unit2may feedback the type of the touch-control display function of the display panel1corresponding to the button structure3to the user. For example, when the user knows that the touch-control display function corresponding to the button structure3is “Music” according to the feedback from the control unit2, if the user confirms the selection of “Music” function, the user may perform the next touch-control operation on the button structure3. After the user performs the next touch-control operation on the button structure3, the control unit2may feedback the information confirming the activation of “Music” function to the user according to the user's next touch-control operation.

In one embodiment, according to the user's touch-control operation performed on the display panel, the feedback information may be provided to the user. Therefore, according to the feedback information, the user may determine the location of the touched button structure and the touch-control display function of the display panel corresponding to the button structure, and may confirm the activation of the touch-control display function. The feedback information may guide the user to perform the touch-control operation on the display panel, thereby improving the user convenience.

In certain embodiments, referring toFIG. 19, a prompt signal of the prompt information may include a vibration signal or a voice signal. A prompt signal of the haptic guidance feedback information may be a first prompt signal, and a prompt signal of the touch-control operation feedback information may be a second prompt signal. The first prompt signal may be different from the second prompt signal.

In certain embodiments, referring toFIG. 19, the first prompt signal of the haptic guidance feedback information may include a first vibration signal, and the second prompt signal of the touch-control operation feedback information may include a second vibration signal. A vibration amplitude of the first vibration signal may be greater than a vibration amplitude of the second vibration signal, and a vibration frequency of the first vibration signal may be greater than a vibration frequency of the second vibration signal.

In one embodiment, according to the user's touch-control operation performed on the display panel, different feedback information may be provided to the user. Therefore, according to the feedback information, the user may determine the location of the touched button structure and the touch-control display function of the display panel corresponding to the button structure, and may confirm the activation of the touch-control display function. The feedback information may guide the user to perform the touch-control operation on the display panel, thereby improving the user convenience.

FIG. 20illustrates a flow chart of another haptic feedback display method of a display device consistent with disclosed embodiments of the present disclosure. In certain embodiments, referring toFIG. 2,FIG. 5,FIG. 9andFIG. 20, the haptic feedback display method may further include S10. In the blind operation mode, when the touch-control sensor4does not detect the touch-control operation, the actuator31may be in a flat state, and the display device may not display any button structure3; when the touch-control sensor4detects the touch-control operation, the actuator31may be in a raised state or a recessed state, and the flexible display panel11at the location of the button structure3may form a protrusion or a recess when the actuator31is in the raised state or the recessed state.

In one embodiment, in the blind operation mode, if the user does not perform any touch-control operation on the display device, the entire plane of the display panel may be in a flat state, and, thus, the display panel may have desired display performance. Because the actuator does not start working, the power usage of the display device may be reduced. After the user performs the touch-control operation on the display device, the actuator under the display panel may start working, such that the display panel may form a raised or recessed surface, which may provide touch-control guidance for the user. Therefore, the user may still be capable of performing touch-control operation on the display panel in a case where it is inconvenient to view the display panel, thereby improving the user convenience.

In certain embodiments, referring toFIG. 2, the touch-control operation performed on the button structure and detected by the touch-control sensor4may include at least a click, a double-click, and a multiple consecutive press.

In one embodiment, the user's touch-control operation performed on the display device may include at least a click, a double-click, a multiple consecutive press, a long-duration press, a short-duration press, a light-press, and a heavy-press, etc. The above-described touch-control operation is used as an example, which is not limited by the present disclosure.

In the display device and the haptic feedback display method of the display device in the disclosed embodiments, in the blind operation mode, the button structure in the display region may be set as a raised structure. When it is inconvenient for the user to directly view the display panel to perform the touch-control operation, the raised button structure may provide guidance for the user. In other words, according to the guidance of the raised button structure, the user may perform the touch-control operation on the display panel by touching the raised button structure without directly viewing the display panel. Therefore, the user may still be capable of performing operation on the display panel in a case where it is inconvenient to view the display panel, thereby improving the user convenience. In addition, the button structure in the disclosed embodiments may be disposed in the display region of the display panel, which may reduce the frame of the display device, increase the area of the display region of the display device, and improve the user experience.

The description of the disclosed embodiments is provided to illustrate the present invention to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments illustrated herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.