Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims at solving the problem that the thickness of the display panel is increased due to the fact that a film layer used for achieving tactile feedback is independently arranged in the related technology. The display panel is provided with a display interaction area and comprises a display substrate and a touch function layer. Wherein the display substrate is at least partially located in the display interaction area; the touch function layer is arranged on one side of the display substrate and located in the display interaction area, the touch function layer comprises a plurality of touch function units arranged in multiple rows and multiple columns, and each touch function unit comprises a touch element and a tactile feedback element which are spaced from each other.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0002] As consumer electronics devices rapidly evolve towards intelligence and multifunctionality, users have placed higher demands on the interactive experience of display panels. They not only require precise touch operation, but also expect to obtain more intuitive operation confirmation through haptic feedback, such as simulating the tactile feel of physical buttons when pressing virtual buttons.

[0003] In related technologies, to achieve haptic feedback, display panels typically require separate film layers to detect touch points and provide haptic feedback. However, this structure increases the thickness of the display panel, impacting the user experience. Summary of the Invention

[0004] This application provides a display panel and display device to solve the problem in the related art where the thickness of the display panel increases due to the separate setting of a film layer for realizing tactile feedback.

[0005] On one hand, embodiments of this application provide a display panel having a display interaction area, including: The display substrate, at least partially located in the display interaction area; and A touch function layer is disposed on one side of the display substrate and located in the display interaction area. The touch function layer includes multiple touch function units arranged in multiple rows and columns. Each touch function unit includes touch elements and haptic feedback elements spaced apart from each other.

[0006] In some embodiments, the haptic feedback element and the touch element in each of the touch functional units are arranged side by side along the row direction.

[0007] In some embodiments, among the plurality of touch functional units located in the same column, the arrangement direction of the plurality of touch elements is the same as the arrangement direction of the plurality of haptic feedback elements.

[0008] In some embodiments, among a plurality of touch functional units located in the same column, a plurality of touch elements and a plurality of haptic feedback elements are arranged alternately along the column direction.

[0009] In some embodiments, in each of the touch functional units, the haptic feedback element at least partially surrounds the touch element, or the touch element at least partially surrounds the haptic feedback element.

[0010] In some embodiments, the display panel further includes a first wiring layer and a second wiring layer located on opposite sides of the touch function layer; the first wiring layer includes a plurality of first metal lines, each of the first metal lines extending along a row direction and electrically connected to the touch element and the haptic feedback element in a row of touch function units; the second wiring layer includes a plurality of second metal lines, each of the second metal lines extending along a column direction, and two adjacent second metal lines being electrically connected to a column of touch function units, wherein one of the two second metal lines connecting the same column of touch function units is electrically connected to the touch element in that column of touch function units, and the other is electrically connected to the haptic feedback element in that column of touch function units.

[0011] In some embodiments, the first wiring layer is located on the side of the touch function layer closest to the display substrate.

[0012] In some embodiments, the display panel further includes a driving module, which is electrically connected to the first metal line and the second metal line respectively; the driving module is configured to drive the touch element to perform touch sensing, and when the touch element senses a touch operation, drive the haptic feedback element corresponding to the touch element to work.

[0013] In some embodiments, the display substrate includes a substrate, a driving circuit layer on the substrate, a plurality of light-emitting devices on the driving circuit layer, and an encapsulation layer covering the plurality of light-emitting devices, wherein the touch function layer is disposed on the side of the encapsulation layer opposite to the substrate.

[0014] In some embodiments, the display substrate includes a black matrix and a plurality of sub-pixels arranged in an array. The black matrix has a plurality of openings, and the orthographic projection of each sub-pixel onto the black matrix is ​​located within a corresponding opening. The orthographic projection of each touch element onto the black matrix covers one opening and a portion of the black matrix, and the orthographic projection of each haptic feedback element onto the black matrix covers one opening and another portion of the black matrix.

[0015] In some embodiments, the display panel further includes a display area, and the display substrate includes a first portion located within the display area and a second portion located within the display interaction area; the first portion and the second portion are foldably connected; the display panel further includes a dimming module electrically connected to the display substrate, the dimming module being configured to: in response to the first portion and the second portion being in an unfolded state, control the brightness of the display area to be the same as the brightness of the display interaction area.

[0016] On the other hand, embodiments of this application also provide a display device, which includes a display panel as described in any of the above embodiments.

[0017] The display panel provided in this application embodiment includes a touch function unit comprising a touch element and a haptic feedback element. This allows the touch element to detect touch points and perform touch control functions, while the haptic feedback element within the touch function unit provides haptic feedback based on the touch element's detection of touch points. Thus, the display panel can simultaneously implement touch and haptic feedback functions. Furthermore, by arranging multiple touch function units in an array within the touch function layer, the thickness of the display panel is avoided due to the separate fabrication of the layers used for touch and haptic feedback. This also avoids the reduced light transmittance and brightness caused by the need for interlayer spacing during the layering process. Additionally, it avoids the increased manufacturing cost of the display panel caused by the requirement for separate components for touch point detection in the haptic feedback layer. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of a display panel provided in some embodiments of this application; Figure 2 This is a cross-sectional view of a display panel provided in some embodiments of this application; Figure 3 This is a schematic diagram of a first routing layer, a touch function layer, and a second routing layer according to some embodiments of this application; Figure 4 This is a schematic diagram of another structure of the first routing layer, the touch function layer and the second routing layer according to some embodiments of this application; Figure 5 This is a schematic diagram of another structure of the first routing layer, the touch function layer and the second routing layer according to some embodiments of this application; Figure 6 This is yet another structural schematic diagram of the first routing layer, the touch function layer, and the second routing layer according to some embodiments of this application; Figure 7 This is a timing diagram of the driving of the first and second signals according to some embodiments of this application; Figure 8 This is a cross-sectional view of a display panel provided in some other embodiments of this application; Figure 9This is a cross-sectional view of a display device provided in some embodiments of this application. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The described technical solutions are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0021] In the description of this application, it should be understood that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words mean two or more, unless otherwise expressly defined.

[0022] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0023] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0024] In this application, the term "example" is used to mean "used as an example, illustration, or illustration." Any embodiment described as "example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application.

[0025] The various embodiments of this application are similar, and features from different embodiments and / or different examples can be combined with each other.

[0026] Some embodiments of this application provide a display panel, such as Figure 1 As shown, the display panel 100 has an interactive display area A2.

[0027] In some examples, the display panel 100 also has a display area A1. The display area A1 and the display interaction area A2 can be arranged side by side, or one can partially or completely surround the other. Both the display area A1 and the display interaction area A2 have an array of pixels P arranged in an array. Each pixel P can include multiple sub-pixels SP that emit different colors of light. For example, each pixel P can include a red sub-pixel for emitting red light, a green sub-pixel for emitting green light, and a blue sub-pixel for emitting blue light.

[0028] The display area A1 and the interactive display area A2 can be rectangular, rounded rectangle, ellipse, circle or other shapes.

[0029] It is worth noting that in this application, "display area A1" and "display interaction area A2" are distinguished only by their location and not by their functions. Display interaction area A2 can perform display functions as well as interactive functions such as touch and haptic feedback. Display area A1 can perform only display functions, or it can perform both display functions and interactive functions such as touch.

[0030] like Figure 1 and Figure 2 As shown, the display panel 100 includes a display substrate 10 and a touch function layer 20 disposed on one side of the display substrate 10 and located in the display interaction area A2. The display substrate 10 is at least partially located in the display interaction area A2. For example, when the display panel 100 only has the display interaction area A2, the display substrate 10 corresponds to the display interaction area A2; when the display panel 100 has both the display area A1 and the display interaction area A2, the display substrate 10 is partially located in the display area A1 and partially located in the display interaction area A2.

[0031] like Figures 3 to 6 As shown, the touch function layer 20 includes multiple touch function units 201 arranged in multiple rows and columns. Each touch function unit 201 includes touch elements 21 and haptic feedback elements 22 spaced apart from each other.

[0032] In this embodiment, since the touch function unit 201 includes a touch element 21 and a haptic feedback element 22, the touch element 21 can be used to realize touch point detection and touch control functions. Based on the touch point detection by the touch element 21, the haptic feedback element 22 in the touch function unit 201 can provide haptic feedback, thereby enabling the display panel 100 to simultaneously realize touch function and haptic feedback function. By distributing multiple touch function units 201 in an array in the touch function layer 20, on the one hand, the problem of increased display panel thickness caused by the separate fabrication of the film layer used to realize touch function and the film layer used to realize haptic feedback function can be avoided. At the same time, the problem of reduced light transmittance and weakened display brightness caused by the need to set intermediate film layer intervals during the layer fabrication process can also be avoided. On the other hand, the problem of increased display panel manufacturing cost caused by the need for separate components for touch point detection in the film layer used to realize haptic feedback function can also be avoided.

[0033] In addition, the touch element 21 and the haptic feedback element 22 in the touch function unit 201 are arranged in a one-to-one correspondence and at intervals, which can effectively ensure the working stability of the haptic feedback element 22 and the touch element 21 and avoid interference between them.

[0034] In some examples, the haptic feedback element 22 can be a vibration feedback element. For example, the vibration feedback element can be made of a polymer piezoelectric material or a composite material of a polymer matrix and piezoelectric powder. Examples of polymer piezoelectric materials include polyvinylidene fluoride (PVDF) and fluorinated polyethylene. Alternatively, the vibration feedback element can also be made of a piezoelectric ceramic material.

[0035] The interactive display area A2 can display a virtual keyboard, while the vibration feedback element can provide vibration feedback when the user uses the virtual keyboard, thus providing a physical keyboard-level user experience.

[0036] In some examples, the touch element 21 may be a capacitive touch electrode.

[0037] In addition, both the touch element 21 and the haptic feedback element 22 are made of materials with a certain degree of transparency to ensure that the display panel 100 has a high display brightness in the display interaction area A2.

[0038] In some embodiments, please refer to Figure 3 and Figure 4 In each touch function unit 201, the haptic feedback element 22 at least partially surrounds the touch element 21.

[0039] This configuration allows for a relatively large distribution range of haptic feedback elements 22 in each touch function unit 201, thereby increasing the touch feedback area range of the haptic feedback elements 22 and improving the user's touch feedback experience.

[0040] As an example, such as Figure 3 As shown, in each touch function unit 201, a haptic feedback element 22 partially surrounds the touch element 21. For example, the haptic feedback element 22 may be disposed on two or three sides of the touch element 21. Figure 3 The touch element 21 is rectangular, and the haptic feedback element 22 is disposed on three sides of the touch element 21.

[0041] With haptic feedback elements 22 disposed on three sides of the touch element 21, each haptic feedback element 22 has a recess for accommodating the corresponding touch element 21. The opening directions of the recesses of all haptic feedback elements 22 are the same. This reduces the area of ​​the haptic feedback elements 22, allowing for a greater number of touch function units 201 to be arranged within the same area, thereby improving the touch effect and haptic feedback effect.

[0042] As another example Figure 4As shown, the haptic feedback element 22 completely surrounds the touch element 21. In this case, the haptic feedback element 22 is in a ring shape. This makes the distribution range of the haptic feedback element 22 in each touch function unit 201 relatively large, thereby increasing the touch feedback area range of the haptic feedback element 22 and improving the user's touch feedback experience.

[0043] It is worth noting that when the haptic feedback element 22 at least partially surrounds the touch element 21, the cross-section of the touch element 21 in the horizontal direction can be rectangular, rounded rectangle, circle, ellipse, or other shapes.

[0044] In other embodiments, in each touch function unit 201, the touch element 21 at least partially surrounds the haptic feedback element 22.

[0045] This configuration allows for a relatively high concentration of energy in the haptic feedback element 22 of each touch function unit 201, thus enabling the transmission of subtle vibrations more clearly.

[0046] As an example, in each touch function unit 201, the touch element 21 partially surrounds the haptic feedback element 22. For example, the touch element 21 may be disposed on both sides or three sides of the haptic feedback element 22.

[0047] As another example, in each touch function unit 201, the touch element 21 completely surrounds the haptic feedback element 22.

[0048] It is worth noting that when the touch element 21 at least partially surrounds the haptic feedback element 22, the cross-section of the haptic feedback element 22 in the horizontal direction can be rectangular, rounded rectangle, circular, elliptical, or other shapes.

[0049] In some embodiments, such as Figure 5 and Figure 6 As shown, the haptic feedback element 22 and the touch element 21 in each touch function unit 201 are arranged side by side along the row direction X.

[0050] This arrangement ensures that the haptic feedback element 22 and the touch element 21 each have a relatively high degree of concentration, effectively guaranteeing that the touch element 21 achieves good touch functionality while also ensuring that the touch feedback energy of the haptic feedback element 22 has a high degree of concentration, thus enhancing the user's touch feedback experience. Furthermore, the haptic feedback element 22 generates heat during vibration. By arranging the haptic feedback element 22 and the touch element 21 side-by-side, the gap between them forms a linear channel in the column direction Y, which facilitates heat dissipation and extends the service life of both the haptic feedback element 22 and the touch element 21.

[0051] In some examples, such as Figure 5As shown, among the multiple touch function units 201 located in the same column, the arrangement direction of the multiple touch elements 21 is the same as the arrangement direction of the multiple haptic feedback elements 22. For example, among the multiple touch function units 201 located in the same column, the multiple touch elements 21 are arranged along the column direction Y, and the multiple haptic feedback elements 22 are arranged along the column direction Y.

[0052] This arrangement allows all touch elements 21 to be arranged in multiple rows and columns, and all haptic feedback elements 22 to be arranged in multiple rows and columns in the touch function layer 20. This facilitates the wiring of metal wires to connect and drive the touch elements 21 and haptic feedback elements 22 respectively.

[0053] In other examples, such as Figure 6 As shown, among the multiple touch function units 201 located in the same column, multiple touch elements 21 and multiple haptic feedback elements 22 are arranged alternately along the column direction Y. For example, along the column direction Y, a haptic feedback element 22 is provided between two adjacent touch elements 21, and a touch element 21 is provided between two adjacent haptic feedback elements 22.

[0054] This arrangement allows the haptic feedback elements 22 to be distributed relatively dispersed, thus avoiding the problem of concentrated distribution of haptic feedback elements 22, which would make it difficult to achieve effective haptic feedback in some areas. Furthermore, since multiple touch elements 21 and multiple haptic feedback elements 22 are arranged alternately along the column direction Y, the spacing between two adjacent haptic feedback elements 22 is increased, thereby effectively alleviating the problem of fatigue damage caused by long-term stress concentration in local areas due to resonance between haptic feedback elements 22.

[0055] In this example, along the row direction X, multiple touch elements 21 and multiple haptic feedback elements 22 are arranged in an alternating pattern.

[0056] In some embodiments, please refer to Figures 2 to 6 The display panel 100 also includes a first wiring layer 31 and a second wiring layer 32 located on opposite sides of the touch function layer 20.

[0057] The first wiring layer 31 includes multiple first metal lines 311 arranged side by side. Each first metal line 311 extends along the row direction X and is electrically connected to the touch element 21 and the haptic feedback element 22 in the row touch function unit 201.

[0058] The second wiring layer 32 includes multiple second metal lines 321, each of which extends along the column direction Y. Two adjacent second metal lines 321 are electrically connected to a column of touch function units 201. Among the two second metal lines 321 that connect the same column of touch function units 201, one second metal line 321 is electrically connected to the touch element 21 in the column of touch function units 201, and the other second metal line 321 is electrically connected to the haptic feedback element 22 in the column of touch function units 201.

[0059] With this configuration, the touch element 21 can be driven to work by controlling the current loop formed by the touch element 21, the first metal line 311, and the corresponding second metal line 321; and the haptic feedback element 22 can be driven to work by controlling the current loop formed by the haptic feedback element 22, the first metal line 311, and the corresponding second metal line 321.

[0060] For ease of explanation, in the following examples, the second metal line 321 electrically connected to the touch element 21 is referred to as the first selected metal line, and the second metal line 321 electrically connected to the haptic feedback element 22 is referred to as the second selected metal line.

[0061] When the haptic feedback element 22 at least partially surrounds the touch element 21, such as Figure 3 and Figure 4 As shown, the second metal line 321 electrically connected to the touch element 21 and the second metal line 321 electrically connected to the haptic feedback element 22 can be arranged side by side and located in the same film layer. For example, the second metal line 321 electrically connected to the touch element 21 (i.e., the first selected metal line) and the second metal line 321 electrically connected to the haptic feedback element 22 (i.e., the second selected metal line) both extend along the column direction Y. Along the row direction X, a second selected metal line is provided between two adjacent first selected metal lines, and a first selected metal line is provided between two adjacent second selected metal lines.

[0062] When the haptic feedback element 22 and the touch element 21 are arranged side by side along the row direction X, and the arrangement direction of the multiple touch elements 21 is the same as the arrangement direction of the multiple haptic feedback elements 22, such as Figure 5 As shown, the second metal line 321 electrically connected to the touch element 21 and the second metal line 321 electrically connected to the haptic feedback element 22 can be arranged side by side and located in the same film layer. For example, the second metal line 321 electrically connected to the touch element 21 (i.e., the first selected metal line) and the second metal line 321 electrically connected to the haptic feedback element 22 (i.e., the second selected metal line) both extend along the column direction Y. Along the row direction X, a second selected metal line is provided between two adjacent first selected metal lines, and a first selected metal line is provided between two adjacent second selected metal lines.

[0063] When the haptic feedback element 22 and the touch element 21 are arranged side by side along the row direction X, and the multiple touch elements 21 and the multiple haptic feedback elements 22 are arranged alternately along the column direction Y, such as Figure 6 As shown, the second metal line 321 (i.e., the first selected metal line) electrically connected to the touch element 21 and the second metal line 321 (i.e., the second selected metal line) electrically connected to the haptic feedback element 22 can be located in different film layers, thereby avoiding short circuits between the first selected metal line and the second selected metal line. Furthermore, the first selected metal line can be electrically connected to the corresponding touch element 21 through a first via, and the second selected metal line can be electrically connected to the corresponding haptic feedback element 22 through a second via.

[0064] In some embodiments, please continue reading Figure 2 The first wiring layer 31 is located on the side of the touch function layer 20 close to the display substrate 10.

[0065] This arrangement facilitates the connection between the first metal line 311 in the first wiring layer 31 and the driving module (e.g., a driving chip) on the display substrate 10. The driving module can provide scanning signals to the first wiring layer 31. Placing the first wiring layer 31 close to the display substrate 10 shortens the transmission path of the scanning signal and reduces signal delay. Furthermore, the display substrate 10 contains a pixel driving circuit that generates high-frequency electromagnetic signals during operation, while the scanning signal is typically a low-frequency pulse signal. By placing the first wiring layer 31 on the side of the touch function layer 20 closer to the display substrate 10, interference caused by high-frequency electromagnetic signals can be effectively blocked from being transmitted to the touch function layer 20.

[0066] In some embodiments, please continue reading Figure 2 The display panel 100 also includes a driving module 50, which is electrically connected to the first metal line 311 and the second metal line 321 respectively. The driving module 50 is configured to drive the touch element 21 to perform touch sensing, and when the touch element 21 senses a touch operation, it drives the corresponding haptic feedback element 22 to work. It is worth noting that the touch element 21 and its corresponding haptic feedback element 22 are located in the same touch function unit 201.

[0067] As an example, the driving module 50 can input scanning signals to multiple touch function units 201 row by row through the first metal line 311, and obtain touch data according to the touch signal output by the touch element 21 to realize mutual capacitance touch sensing; and drive the haptic feedback element 22 corresponding to the touch element 21 to vibrate based on the obtained touch data.

[0068] For example, the second metal line 321 electrically connected to the touch element 21 is referred to as the first selected metal line, and the second metal line 321 electrically connected to the haptic feedback element 22 is referred to as the second selected metal line. The circuit containing the first selected metal line and the first metal line 311 is referred to as the first circuit, and the circuit containing the second selected metal line and the first metal line 311 is referred to as the second circuit. The drive module 50 inputs a first signal to the first circuit to control the opening and closing of the first circuit, and inputs a second signal to the second circuit to control the opening and closing of the second circuit.

[0069] like Figure 7 As shown, for two adjacent time periods t1 and t2, during time period t1, the first signal is at a high level, the touch element 21 performs touch sensing, and the driving module 50 can acquire the corresponding touch data; the second signal is at a low level, and the haptic feedback element 22 does not work. During time period t2, the first signal is at a low level, the touch element 21 does not work; the second signal is at a high level, and the haptic feedback element 22 receives the driving command from the driving module 50, thereby realizing haptic feedback.

[0070] Therefore, in this embodiment, the driving module 50 can, on the one hand, drive the touch element 21 to operate, thereby realizing the touch function of the display panel 100; on the other hand, it can also, based on the touch signal detected by the touch element 21, send a driving command to the corresponding haptic feedback element 22 to realize the haptic feedback function. For example, the magnitude of the touch signal detected by the touch element 21 can match the user's pressing pressure, and the driving module 50 can adjust the magnitude of the driving current output to the corresponding haptic feedback element 22 accordingly, so that the haptic feedback element 22 can achieve different degrees of vibration.

[0071] In some examples, the display panel 100 also includes a cover plate 40 located on the side of the second wiring layer 32 away from the display substrate 10. The cover plate 40 can provide good protection for the film layer located underneath, thereby extending the service life of the display panel 100.

[0072] In some embodiments, please refer to Figure 1 and Figure 2 The display substrate 10 includes a black matrix 13 and a plurality of sub-pixels SP arranged in an array. The black matrix 13 has multiple openings, and the orthographic projection of each sub-pixel SP onto the black matrix 13 lies within a corresponding opening. The openings define the light-emitting area of ​​the corresponding sub-pixel SP. By blocking the area between adjacent sub-pixels SP through the black matrix 13, the display contrast of the display panel 100 can be improved. The plurality of sub-pixels SP and the plurality of openings can correspond one-to-one.

[0073] It is worth noting that the sub-pixel SP may include a driving circuit, a pixel electrode, a common electrode, and liquid crystal molecules corresponding to the pixel electrode. The driving circuit is electrically connected to the pixel electrode, thereby providing a pixel voltage to the pixel electrode; by providing a common voltage and a pixel voltage to the common electrode and the pixel electrode respectively, an electric field can be formed to drive the liquid crystal molecules corresponding to the pixel electrode to deflect. In addition, a backlight is also provided on one side of the display panel 100. By controlling the deflection angle of the liquid crystal molecules, the brightness of the sub-pixel SP can be adjusted, thereby realizing the display of the image on the display panel 100.

[0074] In this embodiment, the orthographic projection of each touch element 21 onto the black matrix 13 covers an opening and a portion of the black matrix 13, and the orthographic projection of each haptic feedback element 22 onto the black matrix 13 covers an opening and another portion of the black matrix 13. For example, in the horizontal direction, the cross-sectional area of ​​each touch element 21 is larger than the cross-sectional area of ​​a corresponding opening, and the cross-sectional area of ​​each haptic feedback element 22 is larger than the cross-sectional area of ​​a corresponding opening. In each touch function unit 201, the gap between the orthographic projection of the touch element 21 onto the black matrix 13 and the orthographic projection of the haptic feedback element 22 onto the black matrix 13 is located outside the opening.

[0075] Since the orthographic projections of each touch element 21 and each haptic feedback element 22 onto the black matrix 13 respectively cover an opening, each touch element 21 and each haptic feedback element 22 has a sub-pixel-level size, thereby improving the sensitivity of the touch function and the haptic feedback function. Furthermore, since the orthographic projections of the touch element 21 and the haptic feedback element 22 onto the black matrix 13 respectively cover a portion of the black matrix 13, the area of ​​the touch element 21 and the haptic feedback element 22 can be increased, thereby further improving the sensitivity of the touch function and the haptic feedback function.

[0076] In some embodiments, please refer to Figure 1 The display substrate 10 includes a first portion 11 located in the display area A1 and a second portion 12 located in the display interaction area A2, wherein the first portion 11 and the second portion 12 are foldable and connected.

[0077] The display panel 100 also includes a dimming module electrically connected to the display substrate 10. The dimming module is configured to control the brightness of the display area A1 to be the same as the brightness of the display interaction area A2 in response to the first part 11 and the second part 12 being in an unfolded state. As an example, the first part 11 and the second part 12 are in an unfolded state when the orthographic projection of the first part 11 onto the plane containing the second part 12 does not overlap with the second part 12, and the angle between the first part 11 and the second part 12 is greater than or equal to 120°. Of course, whether the first part 11 and the second part 12 are in an unfolded state can also be set when the orthographic projection of the first part 11 onto the plane containing the second part 12 does not overlap with the second part 12, and the angle between the first part 11 and the second part 12 is greater than or equal to 135°.

[0078] When the first part 11 and the second part 12 are in the unfolded state, the user can use the display panel 100 solely for image display. Adjusting the brightness of the display area A1 and the interactive display area A2 to be consistent via the dimming module enhances the user's viewing experience.

[0079] As an example, the display panel 100 may include a status detection module electrically connected to the dimming module, which can be used to detect whether the first part 11 and the second part 12 are in an unfolded state. The status detection module includes, for example, at least one of an angle sensor and a position sensor.

[0080] The status detection module can feed back the real-time status between the first part 11 and the second part 12 to the dimming module. The dimming module includes a controller and two brightness control circuits. The controller is used to determine whether the first part 11 and the second part 12 are in the unfolded state. When the controller determines that the first part 11 and the second part 12 are in the unfolded state, the controller can output the same signal to the two brightness control circuits, so that the two brightness control circuits control the first backlight located in the display area A1 and the second backlight located in the display interaction area A2 respectively, and make the emitted light brightness of the first backlight and the second backlight the same.

[0081] In some embodiments, such as Figure 8As shown, the display substrate 10 includes a substrate 101, a driving circuit layer 102 located on the substrate 101, a plurality of light-emitting devices 103 located on the driving circuit layer 102, and an encapsulation layer 104 covering the plurality of light-emitting devices 103. The driving circuit layer 102 may include a plurality of driving circuits, each driving circuit controlling the corresponding light-emitting device 103 to turn on or off. The encapsulation layer 104 is used to encapsulate the light-emitting devices 103 to prevent moisture and / or oxygen from the external environment from corroding the light-emitting devices 103. The encapsulation layer 104 may include a first inorganic encapsulation layer, a second inorganic encapsulation layer, and an organic encapsulation layer located between the two.

[0082] In this embodiment, the touch function layer 20 is disposed on the side of the encapsulation layer 104 opposite to the substrate 101.

[0083] When the touch elements 21 and haptic feedback elements 22 in the touch function layer 20 are arranged side by side, each touch element 21 can cover one or more corresponding light-emitting devices 103, and each haptic feedback element 22 can cover one or more corresponding light-emitting devices 103. For example, please refer to [link to relevant documentation]. Figure 8 Each touch element 21 can cover a corresponding light-emitting device 103, and each haptic feedback element 22 can cover a corresponding light-emitting device 103.

[0084] When the touch element 21 and haptic feedback element 22 in the touch function layer 20 are arranged in a surrounding manner, that is, when the touch element 21 at least partially surrounds the haptic feedback element 22, or when the haptic feedback element 22 at least partially surrounds the touch element 21, each touch function unit 201 may cover one or more corresponding light-emitting devices 103.

[0085] In some examples, the light-emitting device 103 is an OLED (Organic Light-Emitting Diode) device, in which case the light-emitting layer of the light-emitting device 103 is made of organic light-emitting material; or, the light-emitting device 103 is a QLED (Quantum Dot Light-Emitting Diode) device, in which case the light-emitting layer of the light-emitting device 103 is made of quantum dot light-emitting material, and each light-emitting device 103 can emit light of a preset color.

[0086] Some embodiments of this application also provide a display device, such as... Figure 9 As shown, the display device 200 includes the display panel 100 described in any of the above embodiments.

[0087] Since it includes the display panel 100, the display device 200 has the technical effects of the display panel 100 described above, which will not be repeated here.

[0088] In some examples, the display device 200 may also include a frame for mounting the display panel 100. The display device 200 may be, for example, a foldable phone, a foldable tablet, or a foldable laptop.

[0089] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display panel, characterized in that, It has a display interaction area, including: The display substrate, at least partially located in the display interaction area; and A touch function layer is disposed on one side of the display substrate and located in the display interaction area. The touch function layer includes multiple touch function units arranged in multiple rows and columns. Each touch function unit includes touch elements and haptic feedback elements spaced apart from each other.

2. The display panel according to claim 1, characterized in that, The haptic feedback element and the touch element in each of the touch function units are arranged side by side along the row direction.

3. The display panel according to claim 2, characterized in that, In the multiple touch function units located in the same column, the arrangement direction of the multiple touch elements is the same as the arrangement direction of the multiple haptic feedback elements.

4. The display panel according to claim 2, characterized in that, In the multiple touch function units located in the same column, the multiple touch elements and the multiple haptic feedback elements are arranged alternately along the column direction.

5. The display panel according to claim 1, characterized in that, In each of the aforementioned touch functional units, the haptic feedback element at least partially surrounds the touch element, or the touch element at least partially surrounds the haptic feedback element.

6. The display panel according to any one of claims 3-5, characterized in that, The display panel also includes a first wiring layer and a second wiring layer located on opposite sides of the touch function layer; The first wiring layer includes multiple first metal lines, each of which extends along the row direction and is electrically connected to the touch element and the haptic feedback element in a row of touch function units; The second wiring layer includes multiple second metal lines, each of which extends along the column direction. Two adjacent second metal lines are electrically connected to a column of touch function units. Among the two second metal lines connecting the same column of touch function units, one is electrically connected to the touch element in the column of touch function units, and the other is electrically connected to the haptic feedback element in the column of touch function units.

7. The display panel according to claim 6, characterized in that, The first wiring layer is located on the side of the touch function layer closest to the display substrate.

8. The display panel according to claim 6, characterized in that, The display panel further includes a driving module, which is electrically connected to the first metal line and the second metal line respectively; the driving module is configured to drive the touch element to perform touch sensing, and when the touch element senses a touch operation, drive the haptic feedback element corresponding to the touch element to work.

9. The display panel according to any one of claims 1-5, characterized in that, The display substrate includes a substrate, a driving circuit layer on the substrate, a plurality of light-emitting devices on the driving circuit layer, and an encapsulation layer covering the plurality of light-emitting devices, wherein the touch function layer is disposed on the side of the encapsulation layer opposite to the substrate.

10. The display panel according to any one of claims 1-4, characterized in that, The display substrate includes a black matrix and a plurality of sub-pixels arranged in an array. The black matrix has a plurality of openings, and the orthographic projection of each sub-pixel onto the black matrix is ​​located within the corresponding opening. Each of the touch elements projects onto the black matrix, covering one of the openings and a portion of the black matrix, and each of the haptic feedback elements projects onto the black matrix, covering one of the openings and another portion of the black matrix.

11. The display panel according to any one of claims 1-5, characterized in that, The display panel also has a display area, and the display substrate includes a first portion located in the display area and a second portion located in the display interaction area; the first portion and the second portion are foldable and connected. The display panel further includes a dimming module electrically connected to the display substrate. The dimming module is configured to control the brightness of the display area to be the same as the brightness of the display interaction area in response to the first part and the second part being in an unfolded state.

12. A display device, characterized in that, include: The display panel as described in any one of claims 1-11.

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