Display device

Abstract

The invention discloses a display device. The display device comprises a display function layer; the feedback function layer comprises a plurality of deformation units; wherein the display function layer comprises a plurality of sub-pixel units, and the projections of at least two sub-pixel units on the first plane are respectively overlapped with the projections of at least two deformation units on the first plane; wherein the first plane is a plane parallel to the display function layer. The touch feedback feeling of the display device can be improved, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display device. Background Art

[0002] With the development of science and technology, people are no longer satisfied with visual and auditory information input from display devices, and the demand for tactile feedback has also been put on the agenda.

[0003] Tactile feedback technology has been widely used in products such as smart phones, tablet computers, all-in-one computers, control terminals, etc. However, the tactile feedback experience in existing display devices is single and the user experience is poor. Summary of the invention

[0004] The present invention provides a display device to improve the tactile feedback of the display device and enhance the user experience.

[0005] The present invention provides a display device, comprising: a display function layer; a feedback function layer, comprising a plurality of deformation units; wherein the display function layer comprises a plurality of sub-pixel units, and the projections of at least two sub-pixel units on a first plane overlap with the projections of at least two deformation units on the first plane respectively; wherein the first plane is a plane parallel to the display function layer.

[0006] Optionally, the display device further includes a substrate and a touch layer; the display function layer is located on one side of the substrate; the touch layer is located on a side of the display function layer away from the substrate; and the feedback function layer is arranged on a side of the touch layer away from the substrate.

[0007] Optionally, the display device further includes a substrate and a touch layer; the substrate is located between the feedback function layer and the display function layer; and the touch layer is located on a side of the display function layer away from the substrate.

[0008] Optionally, the display device also includes a substrate and a touch layer; the feedback function layer includes a first sub-feedback function layer and a second sub-feedback function layer, the display function layer is located on one side of the substrate; the touch layer is located on a side of the display function layer away from the substrate; the second sub-feedback function layer is located on a side of the touch layer away from the substrate; the first feedback function layer is located on a side of the substrate away from the display function layer.

[0009] Optionally, the deformation units and the sub-pixel units are arranged in a one-to-one correspondence.

[0010] Optionally, an orthographic projection of the deformation unit on the first plane overlaps with an orthographic projection of the sub-pixel unit on the first plane.

[0011] Optionally, the shape of the deformation unit includes at least one of a circle, a square, a triangle and a trapezoid.

[0012] Optionally, the orthographic projection of the deformation unit on the first plane is the same in shape and / or size as the orthographic projection of the sub-pixel unit on the first plane.

[0013] Optionally, the display device also includes a tactile feedback controller, which is electrically connected to the touch layer and the corresponding feedback function layer, respectively, and is used to generate a tactile feedback signal according to the user's touch position information; the deformation unit generates deformation based on the tactile feedback signal to provide corresponding feedback to the touch position.

[0014] Optionally, the tactile feedback controller includes a plurality of output terminals, each of which is electrically connected to a deformation unit.

[0015] Optionally, the touch layer includes a touch electrode layer, and the display device also includes a touch controller; the touch controller is electrically connected to the touch electrode layer and the tactile feedback controller respectively, and the touch controller is used to receive touch signals output by the touch electrode layer and output the user's touch position information to the tactile feedback controller.

[0016] Optionally, the tactile feedback controller is further used to control the vibration amplitude and vibration frequency of the tactile feedback signal according to the display image of the display device.

[0017] Optionally, the deformation unit includes an airbag, and the airbag is used to inflate, deflate or vibrate with airflow according to the tactile feedback signal.

[0018] Optionally, the display function layer further includes a connecting line and a stretchable film layer; the stretchable film layer and the connecting line fill the gap between two adjacent sub-pixel units.

[0019] Optionally, the display function layer includes multiple island substrate units, the sub-pixel unit includes a driving circuit and a light-emitting device, each island substrate unit is provided with a driving circuit and a light-emitting device, and the multiple island substrate units are spaced apart from each other; the stretchable film layer and the connecting line fill the gap between two adjacent island substrate units.

[0020] The display device provided by the embodiment of the present invention includes a display function layer and a feedback function layer, and the feedback function layer includes multiple deformation units. By arranging the projections of at least two sub-pixel units on the first plane to overlap with the projections of at least two deformation units on the first plane, when a user touches the display screen of the display device, a touch signal is applied to the deformation unit corresponding to the touch position, so that the deformation unit is deformed under the action of the touch signal to generate corresponding feedback to the user's touch, that is, the display device of the embodiment of the present invention can realize pixel-level tactile feedback, thereby improving the tactile feedback feeling of the display device and the user's usage experience.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a structural schematic diagram of a display device provided by an embodiment of the present invention;

[0024] Figure 2 is a cross-sectional schematic diagram of a display device provided by an embodiment of the present invention;

[0025] Figure 3 is a cross-sectional schematic diagram of another display device provided by an embodiment of the present invention;

[0026] Figure 4 is a cross-sectional schematic diagram of another display device provided by an embodiment of the present invention;

[0027] Figure 5 It is a cross-sectional schematic diagram of another display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0030] As mentioned in the background technology, the existing display device has the problem of single tactile feedback experience. After careful research, the inventor found that the reason for this technical problem is:

[0031] The tactile feedback systems in existing display devices mostly use linear motors. Due to the large size of linear motors, only one linear motor is usually provided in the display device for tactile feedback. Therefore, the existing display device can only achieve overall tactile feedback, such as overall vibration feedback, resulting in the problem of a single tactile feedback experience in the existing display device.

[0032] In view of the above research findings of the inventors, in order to solve the problems in the prior art, an embodiment of the present invention provides a display device. Figure 1 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. Figure 2 is a cross-sectional schematic diagram of a display device provided by an embodiment of the present invention. Figure 1 to Figure 2 The display device includes: a display function layer 11; a feedback function layer 12, including a plurality of deformation units 120.

[0033] The display function layer 11 includes a plurality of sub-pixel units 110 , and projections of at least two sub-pixel units on the first plane overlap with projections of at least two deformation units on the first plane.

[0034] Specifically, the display device provided in the embodiment of the present invention includes a mobile phone, a tablet computer, a personal digital assistant (PDA) or a car computer, etc., which has a touch function and a display function. The embodiment of the present invention does not impose any special restrictions on the specific form of the display device. Figure 1 For the convenience of explanation, the description is made by taking a mobile phone as an example of a display device.

[0035] The display function layer 11 includes a driving circuit layer and a light emitting device layer, wherein the driving circuit layer is used to form a driving circuit, and the light emitting device layer is used to form a light emitting device. The driving circuit is connected to the light emitting device and is used to drive the light emitting device to emit light according to the display picture. The display picture can be converted into a data voltage and input to the driving circuit, so that the driving circuit forms a driving current according to the data voltage to drive the light emitting device to emit light.

[0036] Further, the display device has a light emitting surface F1, which is the surface of the display device for display. Exemplarily, when the display function layer 11 includes a light emitting device, the light emitting surface F1 is the surface from which light is emitted when the light emitting device emits light.

[0037] In some embodiments, the display device includes at least one feedback function layer 12, and the at least one feedback function layer 12 includes a first sub-feedback function layer, and the first sub-feedback function layer is arranged on a side of the display function layer 11 close to the light emitting surface F1, or the first sub-feedback function layer is arranged on a side of the display function layer 11 away from the light emitting surface F1. In some embodiments, the at least one feedback function layer includes a first sub-feedback function layer and a second sub-feedback function layer, and the first sub-feedback function layer is arranged on a side of the display function layer 11 away from the light emitting surface F1, and the second sub-feedback function layer is arranged on a side of the display function layer 11 close to the light emitting surface. Figure 1 The case where the first sub-feedback functional layer is arranged on the side of the display functional layer 11 close to the light emitting surface F1 is schematically shown.

[0038] Since the deformation units 120 in the feedback function layer 12 are arranged in at least one row and one column, and the row arrangement direction X is the same as the row arrangement direction X of the sub-pixel unit 110, and the column arrangement direction Y of the deformation unit 120 is the same as the column arrangement direction Y of the sub-pixel unit 110, when the user's touch is detected, the deformation unit 120 located at the touch position can be controlled to deform, thereby providing corresponding feedback to the user. Specifically, when the user touches the display screen of the display device, a tactile feedback signal is applied to the corresponding deformation unit 120, and the deformation unit 120 can be deformed under the action of the tactile feedback signal, thereby generating corresponding feedback to the user's touch, effectively improving the touch interaction experience. Exemplarily, the deformation unit 120 may include an airbag, which is used to inflate, deflate or vibrate according to the tactile feedback signal. Exemplarily, when a human hand touches the display screen of the display device, the airbag will inflate, deflate or vibrate in the corresponding area, so that the human hand touching the area can get a sense of feedback.

[0039] The display device provided by the embodiment of the present invention includes a display function layer and a feedback function layer, the feedback function layer includes multiple deformation units, and by arranging the projections of at least two sub-pixel units on a first plane to overlap with the projections of at least two deformation units on the first plane respectively, when a user touches the display screen of the display device, a tactile feedback signal is applied to the deformation unit corresponding to the touch position, so that the deformation unit is deformed under the action of the tactile feedback signal to generate corresponding feedback to the user's touch, that is, the display device of the embodiment of the present invention can realize pixel-level tactile feedback, thereby improving the tactile feedback feeling of the display device and the user's usage experience.

[0040] The embodiment of the present invention does not impose any limitation on the shape of the deformation unit 120. Exemplarily, the shape of the deformation unit 120 may include at least one of a circle, a square, a triangle and a trapezoid. That is to say, the shapes of the deformation units 120 in the feedback function layer 12 can be used alone or in combination according to design requirements in order to simulate the required scene. Optionally, the orthographic projection of the deformation unit 120 on the first plane is the same as the shape and / or size of the orthographic projection 110 of the sub-pixel unit on the first plane. With such an arrangement, the tactile feedback accuracy of the display device can be improved.

[0041] The embodiment of the present invention does not limit the relative position relationship between the feedback function layer and the display function layer, as long as the corresponding touch feedback can be achieved at the touch position where the touch operation occurs. The following provides examples of several position relationships:

[0042] Figure 3 FIG. 1 is a cross-sectional schematic diagram of another display device provided by an embodiment of the present invention. Figure 3 As shown, based on the above embodiment, the display device also includes a substrate 10 and a touch layer 13; the display function layer 11 is located on one side of the substrate 10; the touch layer 13 is located on the side of the display function layer 11 away from the substrate 10; and the feedback function layer 12 is arranged on the side of the touch layer 13 away from the substrate 10.

[0043] Specifically, the substrate 10 can provide buffering, protection or support for the display device. The substrate 10 can be a flexible substrate, and the material of the flexible substrate can be polyimide (PI), polyethylene naphthalate (PEN) or polyethylene terephthalate (PET), etc., or a mixture of the above materials. The substrate 10 can also be a hard substrate formed of materials such as glass.

[0044] When the display device is a stretchable display device, the substrate is a ductile substrate and can be formed of an insulating material that can be bent or stretched. For example, it can be formed of a silicone rubber such as polydimethylsiloxane (PDMS) or an elastomer such as polyurethane (PU) and polytetrafluoroethylene (PTFE), and thus has a stretchable property. Among them, a stretchable display device may refer to a display device that can display an image even if it is bent or stretched. Compared with an ordinary display device, a stretchable display device may have high flexibility. Therefore, the shape of the stretchable display device can be freely changed according to the user's operation such as bending or stretching the stretchable display device. For example, when a user holds and pulls one end of the stretchable display device, the stretchable display device can be stretched by the user's force. For example, when a user places the stretchable display device on an uneven wall, the stretchable display device can be set to bend into the surface shape of the wall. In addition, when the force applied by the user is removed, the stretchable display device can return to its initial shape.

[0045] In the embodiment of the present invention, the touch layer 13 is arranged on the side of the display function layer 11 away from the substrate 10, and the feedback function layer 12 is arranged on the side of the touch layer 13 away from the substrate 10. Compared with arranging the feedback function layer 12 on the side of the substrate 10 away from the display function layer 11, the deformation unit 120 can be closer to the touch layer 13, thereby enabling the user to feel tactile feedback with a larger vibration amplitude at the touch position where the touch operation occurs, thereby making the display device more suitable for blind users.

[0046] Optionally, based on the above embodiment, continue to refer to Figure 3 The display device further includes a tactile feedback controller 15, which is electrically connected to the touch layer 13 and the corresponding feedback function layer 12, and is used to generate a tactile feedback signal according to the user's touch position information. The deformation unit 120 generates deformation based on the tactile feedback signal to provide corresponding feedback to the touch position.

[0047] Specifically, the tactile feedback controller 15 can be a tactile feedback control chip. The tactile feedback controller 15 can be independently set on the display device, and can also be set on the main control board of the display device. For example, the tactile feedback controller 15 can be integrated into a driver chip on the main control board of the display device, and can also be integrated into other chips on the main control board of the display device. The tactile feedback controller 15 is connected to the touch layer 13 to receive the user's touch position information. When the tactile feedback controller 15 receives the user's touch position information, the tactile feedback controller 15 converts the user's touch position information into a tactile feedback signal, such as a voltage signal. The deformation unit 120 generates a deformation based on the tactile feedback signal to provide corresponding feedback to the touch position.

[0048] On the basis of the above embodiment, the tactile feedback controller 15 includes a plurality of output terminals, each of which is electrically connected to a deformation unit 120 .

[0049] Specifically, the number of output terminals of the tactile feedback controller 15 is the same as the number of the deformation units 120. When the output terminals of the tactile feedback controller 15 are connected to the deformation units 120, the output terminals of the tactile feedback controller 15 can be bound to the connection terminals on the substrate 10 through a flexible printed circuit board (FPC), thereby realizing the connection between the tactile feedback controller 15 and the deformation units 120. Each output terminal is connected to a deformation unit 120 for outputting a tactile feedback signal corresponding to the deformation unit 120, so that the tactile feedback controller 15 can independently control each deformation unit 120 to realize that the tactile feedback signal can be output to the touch position where the touch operation occurs.

[0050] Optionally, the tactile feedback controller 15 is further configured to control the vibration amplitude and vibration frequency of the tactile feedback signal according to a display image of the display device.

[0051] In some embodiments, the display screen of the display device can be obtained by using a camera to shoot the display screen of the display device. For example, a photosensitive camera or a CCD camera (Charge Coupled Device) can be used to shoot the display screen of the display device, and the image information of the display screen can be converted into digital information. The tactile feedback controller 15 receives the digital information of the display screen and analyzes it. For example, the tactile feedback controller 15 can receive the digital information of the display screen to identify each object in the display screen, and then find the physical properties corresponding to each object in the database according to the identified object, such as hardness, temperature, etc., so that different feedback levels can be matched according to the different physical properties of each object, and the feedback level is stored in the register to prepare for tactile feedback. For example, when the object is harder, a larger force feedback is provided. When the object is softer, a smaller force feedback is provided. Exemplarily, when the displayed object is a cup, the corresponding force feedback is relatively large, and the vibration amplitude of the tactile feedback signal is large at this time, and the deformation amount of the deformation unit corresponding to the touch position is large, and people will feel that the cup is hard. When the displayed object is cotton, the corresponding force feedback is relatively small, the vibration amplitude of the tactile feedback signal is small, and the deformation amount of the deformation unit corresponding to the touch position is small, so people will feel that the cotton is soft. In other words, the embodiment of the present invention can simulate the tactile sensation of touching the actual object corresponding to the display screen through the vibration amplitude and vibration frequency of the tactile feedback signal, so that the user can feel the tactile sensation of the actual object corresponding to the display screen more realistically, thereby improving the user's usage experience.

[0052] Optionally, the touch layer 13 includes a touch electrode layer 131, and the display device further includes a touch controller 132. The touch controller 132 is electrically connected to the touch electrode layer 131 and the tactile feedback controller 15, respectively, and the touch controller 15 is used to receive the touch signal output by the touch electrode layer 131 and output the user's touch position information to the tactile feedback controller 15.

[0053] Specifically, when a touch operation is input to the display device, the voltage of the touch electrode layer 131 at the touch position where the touch operation occurs changes, and the touch controller 132 determines the touch position where the touch operation occurs according to the detected voltage, and forms touch position information and outputs it to the tactile feedback controller 15, so that the tactile feedback controller 15 can convert the touch position information into a tactile feedback signal. The deformation unit 120 generates deformation based on the tactile feedback signal to provide corresponding feedback to the touch position, thereby realizing the tactile feedback function.

[0054] Figure 4FIG. 1 is a cross-sectional schematic diagram of another display device provided by an embodiment of the present invention. Figure 4 As shown, based on the above embodiment, the display device further includes a substrate 10 and a touch layer 13 .

[0055] The substrate 10 is located between the feedback function layer 12 and the display function layer 11. The touch control layer 13 is located on a side of the display function layer 11 away from the substrate 10.

[0056] In some embodiments, the display device further includes a driving function layer 14, which is located on a side of the feedback function layer 12 away from the substrate 10. The driving function layer 14 can provide buffering, protection or support for the stretchable display device. The driving function layer 14 can be provided with wiring and transistors for driving the deformation unit 120.

[0057] In some embodiments, the deformation of the deformation unit 120 can deform the shapes of the display function layer 11 and the touch layer 13. Specifically, the deformation of the deformation unit 120 can make partial areas of the display function layer 11 and the touch layer 13 protrude. For example, the deformation unit 120 can deform the display function layer 11 and the partial areas of the touch layer 13 corresponding to the deformation unit 120 into a convex shape. In addition, when the deformation unit 120 returns to its original flat state, the display function layer 11 and the touch layer 13 can also return to a flat state. In other words, the display function layer 11 and the touch layer 13 can be stretched by the deformation unit 120, so that the eyes can see the picture with parallax information, thereby producing a stereoscopic visual effect, that is, the stretchable display device can achieve three-dimensional display.

[0058] Figure 5 FIG. 1 is a cross-sectional schematic diagram of another display device provided by an embodiment of the present invention. Figure 5 As shown, based on the above embodiment, the display device further includes a substrate 10 and a touch layer 13 .

[0059] The feedback function layer 12 includes a first sub-feedback function layer 121 and a second sub-feedback function layer 122. The display function layer 11 is located on one side of the substrate 10, and the touch layer 13 is located on the side of the display function layer 11 away from the substrate 10. The second sub-feedback function layer 122 is located on the side of the touch layer 13 away from the substrate 10. The first sub-feedback function layer 121 is located on the side of the substrate 10 away from the display function layer 11. Among them, the deformation unit 120 in the first sub-feedback function layer 121 can enable the stretchable display device to achieve 3D display, and the deformation unit 120 in the second sub-feedback function layer 122 can make the 3D display effect of the stretchable display device more significant, that is, the deformation unit 120 in the second sub-feedback function layer 122 can enhance the 3D display effect of the stretchable display device.

[0060] Optionally, the tactile feedback controller 15 includes a first tactile feedback controller 151 and a second tactile feedback controller 152, and the first tactile feedback controller 151 is electrically connected to the touch layer 13 and the first sub-feedback function layer 121, respectively. The second tactile feedback controller 152 is electrically connected to the touch layer 13 and the second sub-feedback function layer 122, respectively. The first tactile feedback controller 151 and the second tactile feedback controller 152 are used to generate a tactile feedback signal according to the user's touch position information. In this embodiment, by setting the tactile feedback controller to be connected to the feedback function layer 12 in a corresponding manner, compared with setting only one tactile feedback controller, the computational complexity of the tactile feedback controller can be reduced, that is, the amount of data processed by the tactile feedback controller is reduced, and the tactile feedback efficiency of the display device is improved.

[0061] Optionally, based on the above embodiment, continue to refer to Figure 4 and Figure 5 The display function layer 11 further includes a connection line 112 and a stretchable film layer 113. The stretchable film layer 112 and the connection line 113 fill the gap between two adjacent sub-pixel units 110.

[0062] Optionally, the display function layer 11 includes a plurality of island substrate units 111, the sub-pixel unit 110 includes a driving circuit 1101 and a light-emitting device 1102, each island substrate unit 111 is provided with a driving circuit 1101 and a light-emitting device 1102, and the plurality of island substrate units 111 are spaced apart from each other. The stretchable film layer 113 and the connecting line 112 fill the gap between two adjacent island substrate units 111.

[0063] Specifically, a plurality of island substrate units 111 are disposed on the substrate 10. The plurality of island substrate units 111 having a rigid property are spaced apart from each other and disposed on the substrate 10. The plurality of island substrate units 111 may be harder than the substrate 10, and the substrate 10 may be more flexible than the plurality of island substrate units 111.

[0064] The island substrate unit 111 may be made of a flexible plastic material, for example, may be made of polyimide (PI), polyacrylate, polyacetate, or the like.

[0065] The connection line 112 may be disposed between the pads arranged on the plurality of island substrate units 111, and may be electrically connected to each pad. The pads on each may be, for example, a gate pad, a data pad, and a power pad. The connection line 112 may have a twisted wavy shape to cope with stretching, may also have a straight line shape, or may have, for example, a diamond shape, etc., which may reduce damage to the connection line 112 caused by stretching. The embodiment of the present invention does not impose any limitation on the shape of the connection line 112.

[0066] The substrate 10 as a flexible substrate is disposed under a plurality of island substrate units 111, and the stretchable film layer 113 and the connecting line 112 fill the gap between two adjacent island substrate units 111. Therefore, the substrate 10 can be easily stretched or bent except for the area overlapping with the plurality of island substrate units 111, so a stretchable display device can be realized. In addition, when the stretchable display device is bent or stretched, damage to the driving circuit 1101 and the light-emitting device 1102 on the stretchable display device can be suppressed by disposing a plurality of island substrate units 111.

[0067] In addition, when the stretchable display device is bent or stretched, the flexible substrate 10 can be deformed, and the rigid island substrate unit 111 on which the light emitting device 1102 is arranged is not deformed. In this case, if the connection wire 112 connecting each of the pads provided on the plurality of island substrate units 111 is not made of a flexible or stretchable material, the connection wire 112 may be damaged (e.g., broken) due to the deformation of the substrate 10.

[0068] The driving circuit 1101 may include multiple transistors and at least one capacitor. For example, the driving circuit 1101 may be a 2T1C structure, a 7T1C structure, a 5T2C structure, an 8T1C structure, or an 8T2C structure, etc. Wherein, "T" represents a thin film transistor, and "C" represents a capacitor.

[0069] The light emitting device 1102 may be any one of a light emitting diode (LED), an organic light emitting diode (OLED), a quantum dot light emitting diode (QLED), a micro LED (including: mini-LED or micro-LED), etc. For example, the light emitting device 1102 may be an OLED, and the light emitting device 1102 may emit red light, green light, blue light, or white light when driven by its corresponding driving circuit 1101. The color of the light emitted by the light emitting device 1102 may be determined as required, and the embodiment of the present invention is not limited here.

[0070] Optionally, based on the above embodiment, continue to refer to Figure 5, the deformation unit 120 is arranged in a one-to-one correspondence with the sub-pixel unit 110. Optionally, the orthographic projection of the deformation unit 120 on the first plane overlaps with the orthographic projection of the sub-pixel unit 110 on the first plane. Such an arrangement, on the one hand, can make it easier for the deformation unit 120 to control the sub-pixel unit 110, making it simpler for the stretchable display device to achieve a 3D effect. On the other hand, it can prevent the deformation unit 120 from being arranged too densely or too dispersed, affecting the tactile feedback effect of the display device. Optionally, the first plane can be the plane where the substrate 10 is located.

[0071] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display device, characterized in that: include: Display functional layer; A feedback function layer, including a plurality of deformation units; Wherein, the display function layer includes multiple sub-pixel units, and the projections of at least two of the sub-pixel units on the first plane overlap with the projections of at least two of the deformation units on the first plane respectively; wherein, the first plane is a plane parallel to the display function layer.

2. The display device according to claim 1, characterized in that The display device also includes a substrate and a touch layer; The display function layer is located on one side of the substrate; The touch control layer is located on a side of the display function layer away from the substrate; The feedback function layer is arranged on a side of the touch layer away from the substrate.

3. The display device according to claim 1, characterized in that The display device also includes a substrate and a touch layer; The substrate is located between the feedback function layer and the display function layer; The touch control layer is located on a side of the display function layer away from the substrate.

4. The display device according to claim 1, characterized in that The display device further includes a substrate and a touch layer; the feedback function layer includes a first sub-feedback function layer and a second sub-feedback function layer; The display function layer is located on one side of the substrate; The touch control layer is located on a side of the display function layer away from the substrate; The second sub-feedback function layer is located on a side of the touch layer away from the substrate; The first feedback function layer is located on a side of the substrate away from the display function layer.

5. The display device according to any one of claims 1 to 4, characterized in that: The deformation units are arranged in one-to-one correspondence with the sub-pixel units; Preferably, an orthographic projection of the deformation unit on the first plane overlaps with an orthographic projection of the sub-pixel unit on the first plane.

6. The display device according to any one of claims 1 to 4, characterized in that: The shape of the deformation unit includes at least one of a circle, a square, a triangle and a trapezoid; Preferably, the orthographic projection of the deformation unit on the first plane is the same as the orthographic projection of the sub-pixel unit on the first plane in shape and / or size.

7. The display device according to any one of claims 2 to 4, characterized in that: The display device further includes a tactile feedback controller, which is electrically connected to the touch layer and the corresponding feedback function layer, respectively, and is used to generate a tactile feedback signal according to the touch position information of the user; the deformation unit generates deformation based on the tactile feedback signal to provide corresponding feedback to the touch position; Preferably, the tactile feedback controller comprises a plurality of output terminals, each of which is electrically connected to one of the deformation units; Preferably, the touch layer includes a touch electrode layer, and the display device further includes a touch controller; The touch controller is electrically connected to the touch electrode layer and the tactile feedback controller respectively. The touch controller is used to receive the touch signal output by the touch electrode layer and output the user's touch position information to the tactile feedback controller.

8. The display device according to claim 7, characterized in that: The tactile feedback controller is further used to control the vibration amplitude and vibration frequency of the tactile feedback signal according to the display screen of the display device.

9. The display device according to claim 7, characterized in that: The deformation unit includes an airbag, and the airbag is used to inflate, deflate or vibrate with air flow according to the tactile feedback signal.

10. The display device according to claim 3 or 4, characterized in that: The display function layer also includes connecting lines and a stretchable film layer; The stretchable film layer and the connecting line fill the gap between two adjacent sub-pixel units; Preferably, the display function layer includes a plurality of island substrate units, the sub-pixel unit includes a driving circuit and a light-emitting device, each of the island substrate units is provided with the driving circuit and the light-emitting device, and the plurality of island substrate units are spaced apart from each other; The stretchable film layer and the connecting line fill a gap between two adjacent island substrate units.

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