Display module and display device

Abstract

The invention provides a display module and a display device, and the display module comprises a display panel; the first touch feedback structure is arranged on one side of the light emitting direction of the display panel and comprises a first elastic layer, a first electrode and a second electrode, the first electrode array is arranged on one side, away from the display panel, of the first elastic layer, and the second electrode array is arranged on one side, facing the display panel, of the first elastic layer; in the first state, charges of the first electrode and the second electrode are opposite, and in the second state, charges of the first electrode and the second electrode are the same, or at least one of the first electrode and the second electrode is powered off. In the first state, opposite charges are generated on the first electrode and the second electrode, opposite charges attract each other, the first elastic layer is compressed, and the elastic force of the first elastic layer is eliminated for normal display, and in the second state, the same charges are generated on the first electrode and the second electrode or power is cut off, and the first elastic layer is released. The elasticity of the first elastic layer provides feedback for touch control.

Description

Technical Field

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

[0002] Currently, in PC display technology, human-computer interaction is performed through a keyboard or a mouse. During the interaction process, the keyboard or the mouse will provide corresponding feedback to the user, especially to the user's fingertips, to ensure whether the interaction is performed.

[0003] However, in medium and large-size display technologies such as tablets, in most usage scenarios, the display panel is directly touched by the user's fingers. The touch sensor in the display panel controls the corresponding pixel unit through self-inductance or mutual inductance to perform human-computer interaction. However, compared to a keyboard or mouse, especially when typing, there is a lack of interactive feedback in the process of human-computer interaction using touch. That is, the finger generally cannot sense whether the touch is successful, and can only determine whether the touch is successful by observing the corresponding touch interface, which is inconsistent with the user's usage habits. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display module and a display device that overcome the above problems or at least partially solve the above problems.

[0005] Based on the above objectives, in a first aspect of the present application, a display module is provided, comprising:

[0006] Display panel;

[0007] The first touch feedback structure is arranged on the light emitting direction side of the display panel, and includes a first elastic layer, a first electrode and a second electrode. The first electrode array is arranged on the side of the first elastic layer away from the display panel, and the second electrode array is arranged on the side of the first elastic layer facing the display panel. In a first state, the charges of the first electrode and the second electrode are opposite. In a second state, the charges of the first electrode and the second electrode are the same, or at least one of the first electrode and the second electrode is powered off.

[0008] Optionally, the display panel includes a first area and a second area, and a side of the first area adjacent to the second area forms a boundary area;

[0009] An auxiliary protection structure is provided on the side of the display panel away from the light emitting direction, and the auxiliary protection structure includes a second elastic layer, a third electrode and a fourth electrode. The third electrode array is provided on the side of the second elastic layer away from the display panel, and the fourth electrode array is provided on the side of the second elastic layer facing the display panel. In a third state, the charges of the third electrode and the fourth electrode are opposite, and in a fourth state, the charges of the third electrode and the fourth electrode are the same, or at least one of the third electrode and the fourth electrode is powered off.

[0010] Optionally, a first circuit is provided on a side of the first elastic layer away from the display panel, and each of the first electrodes is individually controlled by the first circuit;

[0011] A second circuit is provided on a side of the first elastic layer facing the display panel, and the second electrodes are connected in series via the second circuit;

[0012] or a first circuit is provided on a side of the first elastic layer away from the display panel, and the first electrodes are connected in series via the first circuit;

[0013] A second circuit is disposed on a side of the first elastic layer facing the display panel, and each of the second electrodes is individually controlled by the second circuit.

[0014] Optionally, in the second state, the region with the same charge between the first electrode and the second electrode at least covers the display screen of the display panel.

[0015] Optionally, the first electrode, the second electrode, the first circuit and the second circuit are all made of transparent conductive materials, and the first elastic layer is made of transparent insulating material.

[0016] Optionally, the orthographic projection of the first elastic layer on the display panel is located within the orthographic projection range of the display panel.

[0017] Optionally, the display panel includes pixel units arranged in an array, and a touch layer is provided between the pixel units and the first touch feedback structure;

[0018] The first electrode and the second electrode are symmetrically arranged along the first elastic layer, and each of the first electrode and the second electrode corresponds to the pixel unit.

[0019] Optionally, a wiring area and a control module arranged in the wiring area are provided on one side of the display panel, the control module is connected to the power supply, and the first line and the second line extend to the wiring area and are connected to the control module.

[0020] Optionally, a cover film is provided on a side of the first touch feedback structure away from the display panel.

[0021] Optionally, the orthographic projection of the auxiliary protection structure on the display panel at least covers the boundary area, and the orthographic projection of the second elastic layer on the display panel is located within the orthographic projection range of the display panel.

[0022] Optionally, a third circuit is provided on a side of the second elastic layer away from the display panel, and each of the third electrodes is individually controlled by the third circuit;

[0023] A fourth circuit is provided on a side of the second elastic layer facing the display panel, and the fourth electrodes are connected in series via the fourth circuit;

[0024] or a third circuit is provided on a side of the second elastic layer away from the display panel, and the third electrodes are connected in series via the third circuit;

[0025] A fourth circuit is provided on a side of the second elastic layer facing the display panel, and each of the fourth motors is individually controlled by the fourth circuit.

[0026] Optionally, a wiring area and a control module arranged in the wiring area are provided on one side of the display panel, and the control module is connected to a power supply;

[0027] The display panel includes a base substrate facing the auxiliary protection structure, the base substrate is provided with an extension section on the side facing the wiring area, the extension section is provided with an opening passing through the extension section, and the third circuit and the fourth circuit are connected to the control module through the opening.

[0028] Optionally, a wiring area and a control module arranged in the wiring area are provided on one side of the display panel, and the control module is connected to a power supply;

[0029] The third line and the fourth line extend to the routing area and are connected to the control module.

[0030] In a second aspect of the present application, a display device is provided, comprising the display module as described in the first aspect;

[0031] A protective housing is arranged on a side of the display module away from the light emitting direction and covers a side frame of the display module, wherein the protective housing includes a third area and a fourth area, and the fourth area surrounds or partially surrounds the third area;

[0032] The second touch feedback structure is arranged on a side of the third area of ​​the protective shell away from the display module, the second touch feedback structure includes a third elastic layer, a fifth electrode and a sixth electrode, the fifth electrode array is arranged on a side of the third elastic layer away from the protective shell, the sixth electrode array is arranged on a side of the third elastic layer away from the protective shell, in a fifth state, the fifth electrode and the sixth electrode have opposite charges, in a sixth state, the fifth electrode and the sixth electrode have the same charge, or at least one of the fifth electrode and the sixth electrode is powered off.

[0033] From the above description, it can be seen that the display module and display device provided by the present application, by setting a touch feedback structure on one side of the light emitting direction of the display panel, in a first state, opposite charges are generated on the first electrode and the second electrode, and the opposite charges attract each other, compressing the first elastic layer, eliminating the elastic force of the first elastic layer for normal display, and in the second state, the same charge is generated on the first electrode and the second motor or the power is cut off, releasing the first elastic layer, and the elasticity of the first elastic layer provides feedback for touch.

[0034] An auxiliary protection structure is provided on the side of the display panel away from the light emitting direction. In the third state, opposite charges are generated on the third electrode and the fourth electrode, and opposite charges attract each other, compressing the second elastic layer and eliminating the elastic force of the first elastic layer for normal display. In the fourth state, the same charge is generated on the third electrode and the fourth electrode or the power is cut off, releasing the second elastic layer. The elasticity of the second elastic layer provides auxiliary protection for the bending of the display panel.

[0035] A second touch feedback structure is provided on a side of the protective shell of the display device away from the display panel. In the fifth state, opposite charges are generated on the fifth electrode and the sixth electrode, and opposite charges attract each other, compressing the third elastic layer, eliminating the elastic force of the third elastic layer to ensure normal placement of the display device. In the sixth state, the same charge is generated on the fifth electrode and the sixth electrode or the power is cut off, releasing the third elastic layer. The elasticity of the third elastic layer increases the gripping feel of the display device and can be used for gripping entertainment.

[0036] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 This is a schematic diagram of a display module in a first state of an embodiment of the present application;

[0039] Figure 2 This is a schematic diagram of the display module in the second state of an embodiment of the present application;

[0040] Figure 3 This is a schematic diagram of a display module in a second state according to another embodiment of the present application;

[0041] Figure 4 A schematic diagram of a pixel unit according to an embodiment of the present application;

[0042] Figure 5a This is a first circuit diagram of an embodiment of the present application;

[0043] Figure 5b A second circuit diagram of an embodiment of the present application;

[0044] Figure 6 A schematic diagram of the position of the auxiliary protection structure relative to the display module in an embodiment of the present application;

[0045] Figure 7 A top view of a display module according to an embodiment of the present application;

[0046] Figure 8 This is a schematic diagram of the position of the auxiliary protection structure of the first embodiment of the present application;

[0047] Fig. 9 A schematic diagram of the position of the auxiliary protection structure of the second embodiment of the present application;

[0048] Fig.10 A schematic diagram of the position of the auxiliary protection structure of the second embodiment of the present application;

[0049] Fig.11 A schematic diagram of the wiring of the third electrode and the fourth electrode according to an embodiment of the present application;

[0050] Fig.12 A schematic diagram of the wiring of the third electrode and the fourth electrode according to another embodiment of the present application;

[0051] Fig.13 A schematic diagram of the position of the induction coil according to an embodiment of the present application;

[0052] Fig.14 A schematic diagram of the position of the induction coil of another embodiment of the present application;

[0053] Fig.15 This is a schematic diagram of a display device in a fifth state according to an embodiment of the present application;

[0054] Fig.16 This is a schematic diagram of a display device in a sixth state according to an embodiment of the present application;

[0055] Fig.17 A schematic diagram of the locations of the third area and the fourth area of ​​an embodiment of the present application;

[0056] Fig.18 A schematic diagram of the locations of the third area and the fourth area of ​​another embodiment of the present application;

[0057] Fig.19 This is a schematic diagram of the usage scenarios corresponding to the third area and the fourth area of ​​another embodiment of the present application.

[0058] Illustrations: display panel 1, auxiliary protection structure 3, first elastic layer 21, first electrode 22, second electrode 23, first circuit 24, second circuit 25, display screen 26, cover film 27, first area 31, second area 32, boundary area 33, second elastic layer 34, third electrode 35, fourth electrode 36, touch layer 5, routing area 37, base substrate 11, opening 38, back film layer 7, protective shell 6, third area 61, fourth area 62, third elastic layer 63, fifth electrode 64, sixth electrode 65, protective film layer 66, induction coil 111, display module 100. DETAILED DESCRIPTION

[0059] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0060] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0061] In the drawings, the size of one or more components, the thickness of a layer, or an area is sometimes exaggerated for the sake of clarity. Therefore, one embodiment of the present application is not necessarily limited to the size, and the shape and size of each component in the drawings do not reflect the true proportion. In addition, the drawings schematically show ideal examples, and one embodiment of the present application is not limited to the shapes or values ​​shown in the drawings.

[0062] As described in the background technology, during the process of human-computer interaction between the user and the display device through touch, there is a lack of interactive feedback. In some scenarios, such as touch typing, in different input methods, corresponding settings can be used to achieve typing vibration or typing sound. However, the above settings are generally only for input methods, with a single application scenario, and no matter vibration or sound, the vibration device or speaker device of the display device has corresponding consumption, and the touch feedback therein is not the vibration feedback brought by the display module itself. In order to avoid the consumption of the vibration device or the speaker device and increase the service life of the two, the present application starts from the perspective of the display module and uses the function of the display module itself to bring touch feedback.

[0063] refer to Figures 1 to 3 As shown, an embodiment of the present application provides a display module 100, including: a display panel 1. In some exemplary embodiments, the display panel 1 may be an organic light emitting diode (OLED) display panel 1.

[0064] Optionally, the display panel 1 may at least include a first electrode, a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer (EBL), an emitting layer (EML), a hole blocking layer (HBL), an electron transport layer (ETL), an electron injection layer (EIL), a second electrode and a touch layer 5 which are stacked in sequence.

[0065] In some examples, reference Figure 4 As shown, the light-emitting layer may include a plurality of pixel units arranged in an array, and at least one of the plurality of pixel units may include a first sub-pixel P1 emitting a first color light, a second sub-pixel P2 emitting a second color light, and a third sub-pixel P3 emitting a third color light. For example, the first color light may be red light, the second color light may be filtered light, and the third color light may be blue light. In other words, the first sub-pixel may be a red sub-pixel, the second sub-pixel may be a green sub-pixel, and the third sub-pixel may be a blue sub-pixel.

[0066] The first touch feedback structure is arranged on the side of the light emitting direction of the display panel 1, and includes a first elastic layer 21, a first electrode 22 and a second electrode 23. The first electrode 22 array is arranged on the side of the first elastic layer 21 away from the display panel 1, and the second electrode 23 array is arranged on the side of the first elastic layer 21 facing the display panel 1. In the first state, the first electrode 22 and the second electrode 23 have opposite charges. In the second state, the first electrode 22 and the second electrode 23 have the same charge, or at least one of the first electrode 22 and the second electrode 23 is powered off.

[0067] In some exemplary embodiments, the first state may be a display state, and the second state may be a touch state, such as typing, touch clicking, etc.

[0068] refer to Figure 1 As shown, in the first state, opposite charges are generated on the first electrode 22 and the second electrode 23, and opposite charges attract each other, compressing the first elastic layer 21. The first elastic layer 21 maintains the compressed state for normal display. In the compressed state, the hardness of the first elastic layer increases. Figure 2 , Figure 3As shown, in the second state, the same charge is generated on the first electrode 22 and the second electrode 23, and like charges repel each other. The first elastic layer 21 will be stretched along the space between the first electrode 22 and the second electrode 23 due to the force. During the touch process, the elastic force of the first elastic layer 21 will provide touch feedback to the user's fingers, so that the user can correctly perceive whether the touch is completed.

[0069] Or in the second state, any one of the first electrode 22 and the second electrode 23 is powered off, the first elastic layer 21 is reset, and the elastic force of the first elastic layer 21 itself provides touch feedback to the user's finger, so that the user can correctly perceive whether the touch is completed.

[0070] Alternatively, in the second state, the first electrode 22 and the second electrode 23 are both powered off, the first elastic layer 21 is reset, and the elastic force of the first elastic layer 21 itself provides touch feedback to the user's fingers, so that the user can correctly sense whether the touch is completed. Here, by powering off the first electrode 22 and the second motor, power consumption is reduced.

[0071] Exemplarily, the switching between the first state and the second state can be controlled by any triggering method such as a button, a touch, etc., which is not specifically limited here.

[0072] It should be noted that, in this embodiment, the first touch feedback structure can be directly integrated on the display panel 1, so that the first touch feedback structure is prepared together with the display panel 1. The first touch feedback structure can also be prepared separately and attached to the display panel 1 in the form of an external plug-in, so that users can choose it in a suitable scene, which is not specifically limited here.

[0073] In some embodiments, reference Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the display panel 1 includes a first area 31 and a second area 32 , and a side adjacent to the first area 31 and the second area 32 forms a boundary area 33 .

[0074] An auxiliary protective structure 3 is provided on the side of the display panel 1 away from the light emitting direction, and the auxiliary protective structure 3 includes a second elastic layer 34, a third electrode 35 and a fourth electrode 36. The third electrode 35 array is arranged on the side of the second elastic layer 34 away from the display panel 1, and the fourth electrode 36 array is arranged on the side of the second elastic layer 34 facing the display panel 1. In the third state, the charges of the third electrode 35 and the fourth electrode 36 are opposite. In the fourth state, the charges of the third electrode 35 and the fourth electrode 36 are the same, or at least one of the third electrode 35 and the fourth electrode 36 is powered off.

[0075] In some exemplary embodiments, the display panel 1 is a foldable display panel 1, the first area 31 may be a non-folding area or a folding area, and accordingly, the second area 32 may be a folding area or a non-folding area. If the first area 31 is a non-folding area, the second area 32 is a folding area; if the first area 31 is a folding area, the second area 32 is a non-folding area.

[0076] In some exemplary embodiments, the third state may be a non-bent state, and the fourth state may be a bent state.

[0077] The folding display device is folded, including two folding methods, namely, outward folding and inward folding. Regardless of the inward folding or the outward folding, due to the stacking arrangement of the film layers of the display panel 1, the folding degree of different film layers will be different during the folding process, which may easily cause peeling between different film layers at the folding point. In the related art, the peeling problem during bending is improved by adjusting the amount of film between different film layers and adjusting the hardness of different film layer materials. Generally speaking, the hardness of the film layer material is fixed, and the peeling of different film layers may also be easily caused under the repeated folding and unfolding states.

[0078] In this embodiment, in the third state, opposite charges are generated on the third electrode 35 and the fourth electrode 36, and charges of opposite charges attract each other, compressing the second elastic layer 34. The second elastic layer 34 is compressed to eliminate its elasticity relative to the display panel 1, and the hardness is increased. At this time, the display panel 1 and each film layer of the auxiliary protection structure 3 are in an unfolded state, and the second elastic layer 34 remains in a compressed state for normal display. In the fourth state, the same charge is generated on the third electrode 35 and the fourth electrode 36, and the charges repel each other. The second elastic body will be stretched along the third electrode 35 and the fourth electrode 36 due to the force. During the bending process of the display panel 1, the elastic force of the second elastic body provides support for the film layer in the interface area 33, avoiding the problem of film peeling.

[0079] Or in the fourth state, any electrode of the third electrode 35 and the fourth electrode 36 is powered off, the second elastic body is reset, and the elastic force of the second elastic body itself provides support for different film layers of the display panel 1 in the boundary area 33, so that different film layers of the display panel 1 can avoid peeling.

[0080] Or in the fourth state, the third electrode 35 and the fourth electrode 36 are both powered off, and the second elastomer is reset. The elastic force of the second elastomer itself provides support for different film layers of the display panel 1 in the boundary area 33, so that different film layers of the display panel 1 can avoid peeling off. Here, the power consumption is reduced by powering off the third electrode 35 and the fourth electrode 36.

[0081] It can be understood that when the display panel 1 is folded, the greater the folding angle, the more likely the film layer will peel off. Correspondingly, the greater the folding angle, the more the second elastic layer 34 is compressed as the folding angle increases, and the greater the elastic force provided. The elastic force supports the different film layers of the display panel 1 in the boundary area 33 to avoid peeling problems.

[0082] In some embodiments, reference Figure 5a , Figure 5b As shown, a first circuit 24 is provided on the side of the first elastic layer 21 away from the display panel 1 , and each first electrode 22 is individually controlled by the first circuit 24 . A second circuit 25 is provided on the side of the first elastic layer 21 facing the display panel 1 , and the second electrodes 23 are connected in series through the second circuit 25 .

[0083] The first elastic layer 21 is controlled by controlling the electrical properties of the first electrode 22 and the second electrode 23 respectively, so that the first elastic layer 21 is in a compressed state or a stretched or reset state respectively. The first electrode 22 and the second electrode 23 are controlled by using different circuits respectively. Each electrode is equipped with a circuit for single control, which firstly increases the load on the control end. Secondly, too many circuits not only have high requirements on the preparation process, but also cause waste of circuits.

[0084] In this embodiment, in order to control the electrical properties of the charges on the first electrode 22 and the second electrode 23, the second line 25 is used to connect the second electrode 23 in series, and a single electrical property charge is provided to the second electrode 23, for example, it can be always negative charge or always positive charge, which reduces the load of the control end and reduces the wiring of the second line 25. It is not necessary to control each second electrode 23 to be individually wired, thereby reducing the cost. Each first electrode 22 is individually controlled by the first line 24, and only the electrical property of the first electrode 22 needs to be controlled to achieve the same or different electrical property as the second electrode 23, which also reduces the load of the control end. For example, in the first state, the second electrode 23 is always negatively charged, then the first electrode 22 is also controlled to be negatively charged, and the second electrode 23 is always positively charged, then the first electrode 22 is also controlled to be positively charged. In the second state, the second electrode 23 is always negatively charged, then the first electrode 22 is controlled to be positively charged, and the second electrode 23 is always positively charged, then the first electrode 22 is controlled to be negatively charged.

[0085] In some embodiments, a first circuit 24 is provided on the side of the first elastic layer 21 away from the display panel 1 , and the first electrodes 22 are connected in series through the first circuit 24 . A second circuit 25 is provided on the side of the first elastic layer 21 facing the display panel 1 , and each second electrode 23 is individually controlled by the second circuit 25 .

[0086] In this embodiment, the principle is the same as that of the above embodiment, and the first electrodes 22 are connected in series by the first circuit 24 to provide a single electrical charge to the first electrode 22, for example, it can be a positive charge or a negative charge. Each second electrode 23 is controlled individually by the second circuit 25, and the electrical property of the charge on the second electrode 23 can be the same as or different from that on the first electrode 22 by only controlling the electrical property of the charge on the second electrode 23.

[0087] In some embodiments, reference Figure 3 As shown, in the second state, the region with the same charge between the first electrode 22 and the second electrode 23 at least covers the display screen 26 of the display panel 1 .

[0088] In some exemplary embodiments, the display screen 26 may be a keyboard display screen 26 in the display panel 1 , or may be the entire display screen 26 of the display panel 1 , which is not specifically limited herein.

[0089] By adjusting the area where the first electrode 22 and the second electrode 23 have opposite charges, touch feedback is provided for the corresponding display screen 26. Exemplarily, the display screen 26 is a keyboard display screen 26 in the display panel 1, and the charges on the first electrode 22 and the second electrode 23 in the area corresponding to the keyboard display screen 26 are the same, that is, the first electrode 22 and the second electrode 23 in the area corresponding to the keyboard display screen 26 can be both positively charged or both negatively charged. Only the first elastic layer 21 corresponding to the keyboard display screen 26 has the same charge. During typing, the first elastic layer 21 provides fingertip feedback to the user, and the corresponding key is touched successfully. Here, accurate touch feedback for the corresponding display screen 26 is achieved.

[0090] In some optional embodiments, in the second state, the area with the same charge between the first electrode 22 and the second electrode 23 covers the display panel 1. Different from the above embodiment, in the above embodiment, it is necessary to accurately control the area with the same charge between the first electrode 22 and the second electrode 23 to correspond to the display screen 26, and accurately control the electrical properties of the charge generated on the first electrode 22 or the second electrode 23 in the area, so as to provide touch feedback to the area where touch feedback is required. In this embodiment, in the second state, that is, in the state where touch is required, the charge of the first electrode 22 and the second electrode 23 covering the entire area of ​​the display panel 1 is the same, and the first touch feedback structure corresponding to the entire display panel 1 can perform corresponding touch feedback, without the need to accurately control the electrical properties of the charge generated on the first electrode 22 or the second electrode 23, and only the electrical properties of the charges of the two electrodes need to be the same.

[0091] In some embodiments, the first electrode 22 , the second electrode 23 , the first circuit 24 , and the second circuit 25 are all made of transparent conductive materials, and the first elastic layer 21 is made of transparent insulating material.

[0092] The first touch feedback structure covers one side of the display panel 1 in the light emitting direction. The first electrode 22, the second electrode 23, the first circuit 24 and the second circuit 25 are made of transparent conductive materials, and the first elastic layer 21 is made of transparent insulating material. The first circuit 24 is used to control the electrical properties of the charge of the first electrode 22, and the second circuit 25 is used to control the electrical properties of the charge of the second motor. In the second state, the elastic touch feedback of the first elastic layer 21 is used. Regardless of the first state or the second state, its transparent characteristics can avoid affecting the normal display of the display panel 1.

[0093] In some embodiments, the orthographic projection of the first elastic layer 21 on the display panel 1 is located within the orthographic projection range of the display panel 1 .

[0094] In the first state, the first elastic layer 21 is compressed toward the display panel 1 to harden the first elastic layer 21 to eliminate the elasticity of the first elastic layer 21. In the second state, the first elastic layer 21 is stretched away from the elastic panel or reset. According to the physical properties of the first elastic layer 21, the cross-sectional area of ​​the first elastic layer 21 increases during compression, and decreases during stretching and resetting. The orthographic projection of the first elastic layer 21 on the display panel 1 is located within the orthographic projection range of the display panel 1. After compression, the edge of the first elastic layer 21 will not exceed the edge of the display panel 1, thereby avoiding increasing the width of the frame. In the second state, the first elastic layer 21 is reset or stretched by the first electrode 22 and the second electrode 23, and the edge of the first elastic layer 21 will not exceed the edge of the display panel 1.

[0095] In some embodiments, reference Figures 1 to 4 As shown, the display panel 1 includes pixel units arranged in an array, a touch layer 5 is provided between the pixel units and the first touch feedback structure, the first electrodes 22 and the second electrodes 23 are symmetrically arranged along the first elastic layer 21, and each of the first electrodes 22 and the second electrodes 23 corresponds to a pixel unit.

[0096] In some exemplary embodiments, the touch layer 5 may include a first touch electrode, an insulating layer, and a second touch electrode, wherein the first touch electrode and the second touch electrode are respectively disposed on two opposite sides of the insulating layer.

[0097] Compared with the display module 100 in the related art, the display module 100 in the present embodiment is provided with a first touch feedback structure on the light emitting side of the display panel 1 to increase touch feedback, the display screen 26 in the display panel 1 is controlled by the pixel unit, and the precise touch in the display panel 1 is controlled by the touch electrode in the touch layer 5. In order to achieve accurate touch feedback relative to the display screen 26, the more precise the charge control on both sides of the first elastic layer 21 is, the more precise the first elastic layer 21 corresponds to the display screen 26. By making both the first electrode 22 and the second electrode 23 correspond to the pixel unit, the compressed position of the first elastic layer 21 is precisely corresponded to the non-display screen 26 area, and the non-compressed position is precisely corresponded to the display screen 26 area. At the non-compressed position, the touch of the first elastic layer 21 can be precisely fed back to the display screen 26 through the touch layer 5, and the touch feedback can also be achieved through the elasticity of the first elastic layer 21.

[0098] It is understandable that if the number of the first electrodes 22 and the second electrodes 23 is too large, firstly, it is impossible to achieve that the non-compressed position of the first elastic layer 21 corresponds accurately to the display screen 26 area, that is, in the second state, the boundary between the compressed position and the non-compressed position of the first elastic layer 21 is inaccurate, and accurate touch feedback control cannot be achieved. If the number of the first electrodes 22 and the second electrodes 23 is too large, it will lead to too many circuits for controlling the first electrodes 22 and the second electrodes 23, which has higher requirements on the process and increases the touch cost.

[0099] In some embodiments, a wiring area and a control module disposed in the wiring area are provided on one side of the display panel 1 . The control module is connected to the power supply. The first line 24 and the second line 25 extend to the wiring and are connected to the control module.

[0100] In this embodiment, the first electrode 22 and the second electrode 23 share a power supply with the display panel 1, and the power supply provides charges of corresponding electrical properties to the first electrode 22 and the second electrode 23. The first line 24 and the second line 25 extend to the wiring area and are connected to the control module. Without adding additional wiring, the wiring space occupied by the first touch structure is avoided, and the charge control of the first electrode 22 and the second electrode 23 is realized. At the same time, the first touch feedback structure can be directly integrated on the display panel 1.

[0101] In some optional embodiments, an external power source may be provided to provide charges of corresponding electrical properties to the first electrode 22 and the second electrode 23. While avoiding the increase in the manufacturing process of the display panel 1, the first touch feedback structure and the display panel 1 may be separated by the external power source, that is, the first touch feedback structure may be attached to the display panel 1 when needed and removed when not needed.

[0102] In some embodiments, reference Figures 1 to 3As shown, a cover film 27 is provided on the side of the first touch feedback structure away from the display panel 1. The cover film 27 is used to encapsulate the first touch feedback structure, thereby preventing the first elastic layer 21 or the first electrode 22 located on the surface of the first elastic layer 21 from being directly contacted during the touch process, thereby providing effective protection for the first touch feedback structure.

[0103] In some embodiments, the orthographic projection of the auxiliary protection structure 3 on the display panel 1 at least covers the boundary region 33 , and the orthographic projection of the second elastic layer 34 on the display panel 1 is located within the orthographic projection range of the display panel 1 .

[0104] Exemplarily, at least a back film layer 7 is disposed on a side of the auxiliary protection structure 3 away from the display panel 1 , and the back film layer 7 may include a heat sink and a support frame.

[0105] In this embodiment, the main purpose of the auxiliary protection structure 3 is to provide support for the film layer in the interface area 33 to prevent the film layer from peeling off in the display panel 1. Figure 8 As shown, the auxiliary protection structure 3 can only cover the part where the junction area 33 is located. When the junction area 33 is bent or folded, the elastic force of the second elastic layer 34 in the auxiliary protection structure 3 provides support for each film layer to avoid peeling caused by movement between different film layers due to bending or folding. Fig. 9 As shown, the auxiliary protection structure 3 can cover the junction area 33 and the bending area. When the junction area 33 is bent or folded, the elastic force of the second elastic layer 34 in the auxiliary protection structure 3 can also provide support for each film layer, and the auxiliary protection structure 3 only needs to be processed once, saving the process flow. Fig.10 As shown, the auxiliary protection structure 3 can cover the junction area 33, the bending area and the non-bending area. When the junction area 33 is bent or folded, the elastic force of the second elastic layer 34 in the auxiliary protection structure 3 can also provide support for each film layer, and the auxiliary protection structure 3 only needs one process to be completed. At the same time, the orthographic projection of the second elastic layer 34 on the display panel 1 is located within the orthographic projection range of the display panel 1, that is, the cross-sectional area of ​​the second elastic layer 34 is smaller than the cross-sectional area of ​​the display panel 1. In the third state, the second elastic layer 34 is compressed to harden the second elastic layer 34. During the compression process, the cross-sectional area of ​​the second elastic layer 34 increases. After compression, the edge of the second elastic layer 34 will not exceed the edge of the display panel 1, avoiding an increase in the frame width. In the fourth state, due to the bending and extrusion, the second elastic layer 34 provides support for each film layer of the display panel 1, and the edge will not exceed the edge of the actual panel.

[0106] In some embodiments, a third circuit is provided on the side of the second elastic layer 34 away from the display panel 1, and each third electrode 35 is individually controlled by the third circuit. A fourth circuit is provided on the side of the second elastic layer 34 facing the display panel 1, and the fourth electrodes 36 are connected in series through the fourth circuit.

[0107] The second elastic layer 34 is controlled by controlling the electrical properties of the third electrode 35 and the fourth electrode 36 respectively, so that the second elastic layer 34 is in a compressed state or a stretched or reset state respectively. The third electrode 35 and the fourth electrode 36 are controlled by using different circuits respectively. Each electrode is equipped with a circuit for single control, which also increases the load on the control end. Secondly, too many circuits not only have high requirements on the preparation process, but also cause waste of circuit pairs.

[0108] In this embodiment, in order to control the electrical properties of the charges on the third electrode 35 and the fourth electrode 36, the fourth circuit is used to connect the fourth electrode 36 in series, and a single electrical property is provided to the fourth electrode 36, for example, it can be always negative charge or always positive charge, which reduces the load of the control end and reduces the wiring of the fourth circuit. There is no need to separately wire each fourth electrode 36 to control the polarity, thereby reducing the cost. By controlling each third electrode 35 separately through the third circuit, it is only necessary to control the electrical properties of the third electrode 35 to achieve the same or different from the fourth electrode 36, which also reduces the load of the control end. For example, in the third state, the fourth electrode 36 is always negatively charged, so the third electrode 35 is also controlled to be negatively charged. In the fourth state, the dis electrode is always negatively charged, so the third electrode 35 is controlled to be positively charged, and the fourth electrode 36 is always positively charged, so the third electrode 35 is controlled to be negatively charged.

[0109] In other embodiments, a third circuit is provided on the side of the second elastic layer 34 away from the first elastic layer 21 display panel 1, and the third electrodes 35 of the first elastic layer 21 are connected in series through the third circuit of the first elastic layer 21; a fourth circuit is provided on the side of the first elastic layer 21 and the second elastic layer 34 facing the first elastic layer 21 display panel 1, and each fourth electrode 36 of the first elastic layer 21 is individually controlled by the fourth circuit of the first elastic layer 21.

[0110] In this embodiment, the principle is the same as that of the above embodiment, and the third electrodes 35 are connected in series by the third circuit to provide a single electrical charge to the third electrodes 35, for example, it can be a positive charge or a negative charge. Each fourth electrode 36 is controlled individually by the fourth circuit, and the electrical property of the charge on the fourth electrode 36 can be the same or different from that on the third electrode 35 by only controlling the electrical property of the charge on the fourth electrode 36.

[0111] In some embodiments, reference Fig.11As shown, a wiring area 37 and a control module arranged in the wiring area 37 are provided on one side of the display panel 1, and the control module is connected to the power supply; the display panel 1 includes a substrate 11 facing the auxiliary structure side, and the substrate 11 is provided with an extension section on the side facing the wiring area 37, and the extension section is provided with an opening 38 passing through the extension section, and the third line and the fourth line are connected to the control module through the opening 38.

[0112] In some exemplary embodiments, the display module 100 is a foldable display module 100, the substrate 11 may be a flexible substrate 11, the flexible substrate 11100 may be PET (Polyethlene terephthalate), PEN (Polyethlene naphtthalate two formic acid glycol ester) or PI (Polyimide), etc. According to different display panel 1 requirements, a corresponding substrate 11 may be provided, and no specific limitation is made here.

[0113] In this embodiment, similar to the first touch feedback structure, the third electrode 35 and the fourth electrode 36 can share a power supply with the display panel 1, and the power supply provides charges of corresponding electrical properties to the third electrode 35 and the fourth electrode 36. In the case where the base substrate 11 is relatively large and blocks the third line and the fourth line from extending to the wiring area 37, an opening 38 is made in the base substrate 11 located in the wiring area 37, that is, an opening 38 is made in the extension section, so that the third line and the fourth line are connected to the wiring area 37, and the third line and the fourth line are connected to the control module through the opening 38, without adding an additional wiring area 37, avoiding the occupation of the wiring space of the auxiliary protection structure 3, and realizing the control of the electrical properties of the charges on the third electrode 35 and the fourth electrode 36.

[0114] In other embodiments, reference Fig.12 As shown, a wiring area 37 and a control module arranged in the wiring area 37 are provided on one side of the display panel 1, and the control module is connected to the power supply; the third line and the fourth line extend to the wiring area 37 and are connected to the control module.

[0115] In this embodiment, the base substrate 11 does not block the third line and the fourth line from extending to the routing area 37. The third line and the fourth line are directly extended to the routing area 37 to connect to the control module without adding an additional routing area 37, thereby avoiding the routing space occupation of the auxiliary protection structure 3 and realizing the control of the electrical properties of the charges on the third electrode 35 and the fourth electrode 36.

[0116] In some optional embodiments, an external power source is further included, and the external power source is connected to the third electrode 35 and the fourth electrode 36 through the third line and the fourth line respectively. The external power source reduces the consumption of the power supply.

[0117] In some optional embodiments, the external power supply includes an induction coil 111, and the induction coil 111 is located within the vertical projection range of the routing area 37. Fig.13 , which is a schematic diagram of the relative position of the induction coil 111 and the auxiliary protection structure 3. The induction coil 111 is arranged at a corresponding position of the wiring area 37 to provide power to the auxiliary protection structure 3 without occupying additional space of the display module 100.

[0118] In some optional embodiments, reference Fig.14 As shown, the external power source includes an induction coil 111, which is arranged between the auxiliary protection structure 3 and the display panel 1, and the orthographic projection of the induction coil 111 on the base substrate 11 is located within the orthographic projection range of the first area 31 on the display panel 1. In this embodiment, the induction coil 111 can be directly arranged between the display panel 1 and the auxiliary protection structure 3 as an external power source to reduce the additional space occupied. The induction coil 111 is arranged in the corresponding first area 31 as an external power source, and the induction coil 111 does not interfere with the display panel 1 during the transition from the third state to the fourth state, bending or folding.

[0119] Based on the same inventive concept, the present application provides a display device, referring to Fig.15 , Fig.16 , Fig.17 , Fig.18 as well as Fig.19 As shown, it includes the display module 100 described in any of the above embodiments; a protective shell 6, which is arranged on the side of the display module 100 away from the light emitting direction and covers the side frame of the display module 100, the protective shell 6 includes a third area 61 and a fourth area 62, and the fourth area 62 surrounds or partially surrounds the third area 61; a second touch feedback structure is arranged on the side of the third area 61 of the protective shell 6 away from the display module 100, the second touch feedback structure includes a third elastic layer 63, a fifth electrode 64 and a sixth electrode 65, the fifth electrode 64 array is arranged on the side of the third elastic layer 63 away from the protective shell 6, and the sixth electrode 65 array is arranged on the side of the third elastic layer 63 away from the protective shell 6, in the fifth state, the fifth electrode 64 and the sixth electrode 65 have opposite charges, and in the sixth state, the fifth electrode 64 and the sixth electrode 65 have the same charge, or at least one of the fifth electrode 64 and the sixth electrode 65 is powered off.

[0120] In some exemplary embodiments, reference Fig.17As shown, for a small foldable display device, the third area 61 may be a finger and palm contact area. Fig.18 and Fig.19 As shown, for a medium or large display device, the third area 61 may be only a finger contact area. The fourth area 62 may be other areas outside the third area 61 .

[0121] The fifth state may be a placed state of the display device, and the sixth state may be a held state of the display device.

[0122] In the fifth state, opposite charges are generated on the fifth electrode 64 and the sixth electrode 65, and charges of opposite charges attract each other, compressing the third elastic layer 63. In the compressed state, the third elastic layer 63 becomes harder for normal placement. In the sixth state, the fifth electrode 64 and the sixth electrode 65 generate the same charge, and charges of the same charge repel each other. The third elastic layer 63 will be stretched between the fifth electrode 64 and the sixth electrode 65 by the action of the force, and the elasticity brought by it increases the grip.

[0123] Alternatively, in the sixth state, any one of the fifth electrode 64 and the sixth electrode 65 is powered off, and the third elastic layer 63 is reset. The elasticity of the third elastic layer 63 itself also increases the gripping feeling.

[0124] Alternatively, in the sixth state, the fifth electrode 64 and the sixth electrode 65 are powered off at the same time, the third elastic layer 63 is reset, and the elasticity of the third elastic layer 63 itself also increases the gripping feeling.

[0125] It can be understood that, in the sixth state, in addition to increasing the gripping feeling, the elastic force of the third elastic layer 63 can also be used by the user for entertainment, such as pinching music, etc.

[0126] It should be noted that a protective film layer 66 is disposed on a side of the fifth electrode 64 away from the protective housing 6 , and the protective film layer 66 provides packaging protection for the second touch feedback structure.

[0127] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0128] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0129] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0130] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: Display panel; The first touch feedback structure is arranged on the light emitting direction side of the display panel, and includes a first elastic layer, a first electrode and a second electrode. The first electrode array is arranged on the side of the first elastic layer away from the display panel, and the second electrode array is arranged on the side of the first elastic layer facing the display panel. In a first state, the charges of the first electrode and the second electrode are opposite. In a second state, the charges of the first electrode and the second electrode are the same, or at least one of the first electrode and the second electrode is powered off.

2. The display module according to claim 1, characterized in that: The display panel includes a first area and a second area, and a side of the first area adjacent to the second area forms a boundary area; An auxiliary protection structure is provided on the side of the display panel away from the light emitting direction, and the auxiliary protection structure includes a second elastic layer, a third electrode and a fourth electrode. The third electrode array is provided on the side of the second elastic layer away from the display panel, and the fourth electrode array is provided on the side of the second elastic layer facing the display panel. In a third state, the charges of the third electrode and the fourth electrode are opposite, and in a fourth state, the charges of the third electrode and the fourth electrode are the same, or at least one of the third electrode and the fourth electrode is powered off.

3. The display module according to claim 1, characterized in that: A first circuit is provided on a side of the first elastic layer away from the display panel, and each of the first electrodes is individually controlled by the first circuit; A second circuit is provided on a side of the first elastic layer facing the display panel, and the second electrodes are connected in series via the second circuit; or a first circuit is provided on a side of the first elastic layer away from the display panel, and the first electrodes are connected in series via the first circuit; A second circuit is disposed on a side of the first elastic layer facing the display panel, and each of the second electrodes is individually controlled by the second circuit.

4. The display module according to claim 3, characterized in that: In the second state, the region with the same charge between the first electrode and the second electrode at least covers the display screen of the display panel.

5. The display module according to claim 3, characterized in that: The first electrode, the second electrode, the first circuit and the second circuit are all made of transparent conductive materials, and the first elastic layer is made of transparent insulating material.

6. The display module according to claim 1, characterized in that: The orthographic projection of the first elastic layer on the display panel is located within the orthographic projection range of the display panel.

7. The display module according to claim 1, characterized in that: The display panel includes pixel units arranged in an array, and a touch layer is provided between the pixel units and the first touch feedback structure; The first electrode and the second electrode are symmetrically arranged along the first elastic layer, and each of the first electrode and the second electrode corresponds to the pixel unit.

8. The display module according to claim 3, characterized in that: A wiring area and a control module arranged in the wiring area are provided on one side of the display panel. The control module is connected to a power supply. The first line and the second line extend to the wiring area and are connected to the control module.

9. The display module according to claim 1, characterized in that: A cover film is provided on a side of the first touch feedback structure away from the display panel.

10. The display module according to claim 2, characterized in that: The orthographic projection of the auxiliary protection structure on the display panel at least covers the boundary area, and the orthographic projection of the second elastic layer on the display panel is located within the orthographic projection range of the display panel.

11. The display module according to claim 2, characterized in that: A third circuit is provided on a side of the second elastic layer away from the display panel, and each of the third electrodes is individually controlled by the third circuit; A fourth circuit is provided on a side of the second elastic layer facing the display panel, and the fourth electrodes are connected in series via the fourth circuit; or a third circuit is provided on a side of the second elastic layer away from the display panel, and the third electrodes are connected in series via the third circuit; A fourth circuit is provided on a side of the second elastic layer facing the display panel, and each of the fourth motors is individually controlled by the fourth circuit.

12. The display module according to claim 11, characterized in that: A wiring area and a control module arranged in the wiring area are provided on one side of the display panel, and the control module is connected to a power supply; The display panel includes a base substrate facing the auxiliary protection structure, the base substrate is provided with an extension section on the side facing the wiring area, the extension section is provided with an opening passing through the extension section, and the third circuit and the fourth circuit are connected to the control module through the opening.

13. The display module according to claim 11, characterized in that: A wiring area and a control module arranged in the wiring area are provided on one side of the display panel, and the control module is connected to a power supply; The third line and the fourth line extend to the routing area and are connected to the control module.

14. A display device, characterized in that: Comprising the display module according to any one of claims 1 to 13; A protective housing is arranged on a side of the display module away from the light emitting direction and covers a side frame of the display module, wherein the protective housing includes a third area and a fourth area, and the fourth area surrounds or partially surrounds the third area; The second touch feedback structure is arranged on a side of the third area of ​​the protective shell away from the display module, the second touch feedback structure includes a third elastic layer, a fifth electrode and a sixth electrode, the fifth electrode array is arranged on a side of the third elastic layer away from the protective shell, the sixth electrode array is arranged on a side of the third elastic layer away from the protective shell, in a fifth state, the fifth electrode and the sixth electrode have opposite charges, in a sixth state, the fifth electrode and the sixth electrode have the same charge, or at least one of the fifth electrode and the sixth electrode is powered off.

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