Display panel and display device

Abstract

This application provides a display panel and a display device. The display panel includes: a flexible driving substrate; a display layer disposed on one side of the substrate, the display layer including at least two display units; a sensing layer disposed on the same side of the substrate as the display layer; the sensing layer including sensing units; the sensing units including distance sensing units and pressure sensing units; and an encapsulation layer covering the display layer and the sensing layer; wherein the sensing units are located between two adjacent display units and are disposed on the same layer as the display layer. By embedding the sensing units in the gaps between the display units and disposing them on the same layer as the display layer, no additional independent film layer thickness is required, achieving a good balance between structural compactness and functional reliability.

Description

Technical Field

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

[0002] In the current new retail and smart wearable fields, virtual fitting and smart fitting rooms have become the mainstream direction of the industry, which rely on curved flexible display and human body sensing technology to realize 3D fitting effect presentation and human body data collection.

[0003] Existing fitting room display devices mostly use rigid or semi-flexible curved screens, with sensor modules and display modules arranged in layers, resulting in redundant wiring, complex processes, high costs, and low space utilization. Summary of the Invention

[0004] This application provides a display panel and display device to solve the problems of redundant wiring, complex manufacturing process, high cost, and low space utilization in existing display panels that integrate sensors.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows: A display panel is provided, comprising: a flexible driving substrate; a display layer disposed on one side of the substrate, the display layer including at least two display units; a sensing layer disposed on the same side of the substrate as the display layer; the sensing layer including a sensing unit; the sensing unit including a distance sensing unit and a pressure sensing unit; the sensing unit being located between two adjacent display units and disposed in the same layer as the display layer; an encapsulation layer covering the display layer and the sensing layer; a deformation layer located on the side of the flexible driving substrate away from the display layer, used to drive the flexible driving substrate and the display layer to bend; the deformation layer including a plurality of deformation units, each of the plurality of deformation units being provided with a lead, and each lead of the deformation unit being connected to a signal source; the deformation unit receiving an electrical signal from the signal source through the lead, and deforming individually under the action of the electrical signal, thereby driving the flexible driving substrate to bend in a corresponding area.

[0006] The distance sensing unit is located between two adjacent display units in a first direction; the pressure sensing unit is located between two adjacent display units in a second direction; the first direction and the second direction intersect.

[0007] The flexible driving substrate includes a flexible substrate and a driving circuit layer. The driving circuit layer is located between the flexible substrate and the display layer. The driving circuit layer includes driving lines of the display unit and sensing lines and sensing electrodes of the sensing unit. At least one metal layer in the sensing lines, the sensing electrodes and the driving lines is disposed in the same layer.

[0008] The deformation unit is a piezoelectric ceramic unit, which generates an inverse piezoelectric effect under the action of the electrical signal and undergoes stretching and deformation along the thickness direction of the display panel.

[0009] The distance sensing unit includes a millimeter-wave sensing unit, which is used to transmit and receive millimeter-wave signals to detect the outline of an external object; and / or, the pressure sensing unit includes a capacitive pressure sensing unit, which is used to detect the pressure distribution and pressure magnitude when an external object contacts the display panel.

[0010] The encapsulation layer is made of polyimide and fluorinated acrylic, and its thickness ranges from 4 μm to 6 μm.

[0011] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a display device, which includes any of the above-mentioned display panels; a host computer connected to the display panel, used to receive the sensing data of the sensing unit and control the display panel to display the screen according to the sensing data.

[0012] Wherein, the display device is a fitting device; the display device includes a display panel including the deformation layer as described in any of the above claims; the host is configured to: respond to a user entering the collection range of the distance sensing unit, collect a first distance between a plurality of sampling points on the user's surface and the distance sensing unit through the distance sensing unit, and depict the user's body shape outline based on the first distance; calculate the target display curvature data of the display panel based on the body shape outline; and drive the flexible driving substrate and the display layer to bend through the deformation layer based on the target display curvature data.

[0013] The host computer is further configured to: after driving the flexible driving substrate and the display layer to bend according to the target display curvature data through the deformation layer, detect a second distance between the distance sensing unit and the reference surface through the distance sensing unit; obtain the actual display curvature data of the display panel according to the second distance; in response to the difference between the actual display curvature data and the target display curvature data being greater than an error threshold, drive the flexible driving substrate and the display layer to bend again through the deformation layer; and send the three-dimensional virtual clothing model to the display panel for curved surface adaptation display.

[0014] The host is further configured to: after sending the 3D virtual clothing model to the display panel for curved surface adaptation display, adjust the 3D virtual clothing model in response to the user's interaction information; wherein the interaction information includes at least one of the user clicking the display panel and the user sliding the display panel.

[0015] The advantages of this application are as follows: by setting the driving substrate as a flexible driving substrate, repeated bending of the display panel can be achieved. At the same time, the sensing unit is embedded in the gap between the display units and set in the same layer as the display layer, without the need to add an additional independent film layer thickness, which simplifies the process, reduces costs, and achieves a good balance between structural compactness and functional reliability. In addition, since each deformation unit of the deformation layer is driven independently, multi-region differentiated bending of the display panel can be achieved. Attached Figure Description

[0016] 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 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. Wherein: Figure 1 This is a cross-sectional schematic diagram of a display panel in one embodiment of this application; Figure 2 This is a top view of the display panel in one embodiment of this application; Figure 3 This is a cross-sectional schematic diagram of the display panel in another embodiment of this application; Figure 4 This is a schematic diagram of the deformation unit in one embodiment of this application; Figure 5 This is a schematic diagram of the display panel in use according to one embodiment of this application; Figure 6 This is a schematic diagram of the display panel in use in another embodiment of this application. Detailed Implementation

[0017] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] See Figure 1 as well as Figure 2In one embodiment of this application, the display panel 1 includes a flexible driving substrate 100, a display layer 200, a sensing layer 300, and an encapsulation layer 400; the display layer 200 is disposed on one side of the flexible driving substrate 100, and the display layer 200 includes at least two display units 210; the sensing layer 300 and the display layer 200 are disposed on the same side of the flexible driving substrate 100, and the sensing layer 300 includes a sensing unit 310, which includes a distance sensing unit 311 and a pressure sensing unit 312; the encapsulation layer 400 covers the display layer 200 and the sensing layer 300; wherein, the sensing unit 310 is located between two adjacent display units 210 and is disposed on the same layer as the display layer 200.

[0019] Specifically, the display panel 1 includes a flexible driving substrate 100, which serves as the supporting foundation for the entire display panel 1 and is made of a material with ultra-high flexibility and excellent bending resistance. In one embodiment, the flexible driving substrate 100 is made of black polyimide with a thickness of 25 μm.

[0020] A display layer 200 is disposed on one side surface of the flexible driving substrate 100. The display layer 200 includes at least two independent display units 210, which are arrayed on the surface of the flexible substrate according to a preset arrangement rule.

[0021] In one embodiment, the display unit 210, along the thickness direction of the display panel 1, includes, from bottom to top, an anode layer 211, a hole injection layer 212, a hole transport layer 213, a light-emitting layer 214, an electron transport layer 215, an electron injection layer 216, and a cathode layer 217. Specifically, the anode layer 211 is an indium tin oxide (ITO) conductive layer with a thickness of 0.15 μm; the hole injection layer 212 includes poly(3,4-dimethylformamide) alloys. Ethylenedioxythiophene Polystyrene sulfonate (PEDOT:PSS) with a thickness of 0.02 μm; hole transport layer 213 includes N, N′ 2(1) (naphthyl) N,N′ Diphenyl 4,4′ The light-emitting layer 214 comprises three different colored light-emitting materials and has a thickness of 0.08 μm; the electron transport layer 215 comprises 8-hydroxyquinoline aluminum (Alq3) and has a thickness of 0.05 μm; the electron injection layer 216 comprises lithium fluoride (LiF) and has a thickness of 0.001 μm; the cathode layer 217 comprises a magnesium-silver alloy, wherein the magnesium content is 10%, and the cathode layer 217 has a thickness of 0.1 μm.

[0022] The sensing layer 300 and the display layer 200 are disposed on the same side of the flexible driving substrate 100. The sensing layer 300 includes a sensing unit 310, which is located between adjacent display units 210 and is substantially coplanar with the display units 210.

[0023] An interlayer dielectric layer 220 is also provided between the display unit 210 and the sensing unit 310, which realizes the electrical isolation between the display unit 210 and the sensing unit 310.

[0024] The encapsulation layer 400 is used to prevent moisture and oxygen from entering the interior of the display panel 1, and to prevent the display layer 200 and the sensing layer 300 from degrading due to external environmental factors.

[0025] The encapsulation layer 400 is made of polyimide and fluorinated acrylic. Polyimide provides good toughness and thermal stability, while fluorinated acrylic gives the encapsulation layer 400 good hydrophobic and oleophobic properties, which helps to reduce the adsorption and penetration of water molecules on the surface of the encapsulation layer 400.

[0026] The thickness of the encapsulation layer 400 ranges from 4μm to 6μm, for example, 4μm, 5μm, or 6μm. Within this thickness range, the encapsulation layer 400 can effectively block moisture and oxygen without significantly increasing the overall thickness of the display panel 1.

[0027] In one embodiment, the encapsulation layer 400 has a thickness of 5 μm, and the polyimide and fluorinated acrylic are in a laminated structure, wherein the polyimide film layer has a thickness of 3 μm, and the fluorinated acrylic film layer has a thickness of 2 μm. The encapsulation layer 400 in this embodiment achieves a water vapor transmittance of <10%. -6 g / (m² (day), oxygen permeability <10 -5 cc / (m² day The pencil has an atm hardness of 4H and a bending radius of ≥3mm.

[0028] In one embodiment, the edge of the encapsulation layer 400 extends 3 mm beyond the edges of the display layer 200 and the sensing layer 300, thereby fully encapsulating and sealing the display layer 200 and the sensing layer 300, preventing moisture and oxygen from penetrating into the interior of the display panel 1 from the side, resulting in a better encapsulation effect.

[0029] This application sets the driving substrate as a flexible driving substrate, which can realize repeated bending of the display panel 1. At the same time, the sensing unit 310 is embedded in the gap between the display units 210 and set in the same layer as the display layer 200. There is no need to add an additional independent film layer thickness, which simplifies the process and reduces costs, achieving a good balance between compact structure and functional reliability.

[0030] See Figure 2 In one embodiment of this application, the distance sensing unit 311 is located between two adjacent display units 210 in the first direction X, and the pressure sensing unit 312 is located between two adjacent display units 210 in the second direction Y, wherein the first direction X and the second direction Y intersect.

[0031] Specifically, the distance sensing unit 311 is located between two adjacent display units 210 in the first direction X, that is, the distance sensing unit 311 is located in the row gap of the display units 210, and the pressure sensing unit 312 is located between two adjacent display units 210 in the second direction Y, that is, the pressure sensing unit 312 is located in the column gap of the display units 210. The first direction X and the second direction Y intersect. In one embodiment, the first direction X and the second direction Y are perpendicular.

[0032] By arranging the two types of sensing units 310 in different directions in the row and column gaps of the display unit 210, the wiring density and signal crosstalk risk can be reduced, which is conducive to achieving a more integrated multi-functional sensing configuration within the limited gaps of the display unit 210.

[0033] In another embodiment, the distance sensing unit 311 can be located between two adjacent display units 210 in the second direction Y, that is, the distance sensing unit 311 is located in the column gap of the display unit 210, and the pressure sensing unit 312 is located between two adjacent display units 210 in the first direction X, that is, the pressure sensing unit 312 is located in the row gap of the display unit 210.

[0034] In another embodiment, the distance sensing unit 311 and the pressure sensing unit 312 are not limited to being arranged continuously in one direction. Specifically, a distance sensing unit 311 is provided every few display units 210 along the first direction X, and a pressure sensing unit 312 is provided every few display units 210 along the second direction Y, so as to adapt to application scenarios with different requirements for sensing accuracy in different areas.

[0035] In other embodiments, the distance sensing unit 311 and the pressure sensing unit 312 are arranged alternately in the same direction, that is, the distance sensing unit 311, the pressure sensing unit 312, and the distance sensing unit 311 are arranged sequentially at intervals along the first direction X, and so on in a cycle.

[0036] This application does not impose specific restrictions on the arrangement of the distance sensing unit 311 and the pressure sensing unit 312, as long as they are located between the row gaps or column gaps of the display unit 210.

[0037] In one embodiment of this application, the distance sensing unit 311 includes a millimeter-wave sensing unit for transmitting and receiving millimeter-wave signals to detect the outline of an external object; and / or, the pressure sensing unit 312 includes a capacitive pressure sensing unit for detecting the pressure distribution and pressure magnitude when an external object contacts the display panel 1.

[0038] Specifically, the distance sensing unit 311 includes a millimeter-wave sensing unit. The millimeter-wave sensing unit detects the outline of external objects by transmitting and receiving millimeter-wave signals, and has the advantages of strong penetration and no interference from ambient light.

[0039] In one embodiment, the size of each millimeter-wave sensing unit is 0.2 mm. The millimeter-wave sensing unit is 0.2 mm in diameter and is located between two display units 210 in the first direction X, with a spacing of 1 mm between the two millimeter-wave sensing units. This size and spacing allow the millimeter-wave array to achieve a sampling density sufficient to resolve the outline of external objects without encroaching on the display units 210.

[0040] The pressure sensing unit 312 includes a capacitive pressure sensing unit, which includes two electrode plates. When an external object touches the surface of the display panel 1, the pressure causes the distance between the upper and lower electrodes to change, resulting in a change in capacitance. By detecting the change in capacitance, the pressure distribution and pressure magnitude can be determined.

[0041] In one embodiment, the sensitivity of the capacitive pressure sensing unit is 10 Pa, and the size of each capacitive pressure sensing unit is 0.15 mm. The pressure sensor is positioned 0.15 mm in the second direction Y between two display units 210, and the distance between the two capacitive pressure sensing units is 0.8 mm. This sensitivity, combined with the size and spacing, can capture minute pressure changes without excessively occupying the gap space of the display units 210.

[0042] In the scheme of this application, the distance sensing unit 311 can be configured as a millimeter-wave sensing unit, while the pressure sensing unit 312 can be configured as a capacitive pressure sensing unit; alternatively, only the distance sensing unit 311 can be configured as a millimeter-wave sensing unit, while the pressure sensing unit 312 can be configured as a resistive pressure sensing unit or other pressure sensing unit; or only the pressure sensing unit 312 can be configured as a capacitive pressure sensing unit, while the distance sensing unit 311 can be configured as an infrared proximity sensing unit or other distance sensing unit. This application does not limit the specific type of sensing unit 310.

[0043] See Figure 1In one embodiment of this application, the flexible driving substrate 100 includes a flexible substrate 110 and a driving circuit layer 120. The driving circuit layer 120 is located between the flexible substrate 110 and the display layer 200. The driving circuit layer 120 includes driving lines of the display unit 210 and sensing lines and sensing electrodes of the sensing unit 310. At least one metal layer among the sensing lines, sensing electrodes and driving lines is disposed on the same layer.

[0044] Specifically, the flexible driving substrate 100 includes a flexible substrate 110 and a driving circuit layer 120. The driving circuit layer 120 is disposed between the flexible substrate 110 and the display layer 200. That is, along the thickness direction of the display panel 1, it includes the flexible substrate 110, the driving circuit layer 120 and the display layer 200 from bottom to top. The driving circuit layer 120 includes both driving lines for controlling the light emission of the display unit 210 and sensing lines and sensing electrodes for transmitting signals of the sensing unit 310.

[0045] In this design, at least one metal layer in the sensing circuit, sensing electrode, and driving circuit is fabricated using the same film layer; that is, the driving circuit, sensing circuit, and sensing electrode share a common metal wiring layer. This common metal layer is made of molybdenum. aluminum The molybdenum composite stack (Mo / Al / Mo composite layer) has a total thickness of 0.3 μm. The composite film is formed by sequentially depositing Mo, Al and Mo layers by magnetron sputtering. Then, patterning processes such as spin coating of photoresist, photolithography exposure, development, etching and photoresist removal are performed to simultaneously form the driving lines of the display unit 210 and the sensing lines and sensing electrodes of the sensing unit 310 in the same photolithography process.

[0046] By using the same film layer for at least one metal layer in the sensing circuit, sensing electrode and driving circuit, the process flow can be reduced and the manufacturing cost can be lowered.

[0047] In one embodiment, the driving circuit of the display unit 210 includes display driving metal circuits such as scan lines and data lines, the distance sensing unit 311 is a millimeter-wave sensing unit, and the pressure sensing unit 312 includes a capacitive pressure sensing unit. The aforementioned sensing circuits and sensing electrodes include the signal feed line of the millimeter-wave sensing unit and the lower electrode of the capacitive pressure sensing unit. Specifically, the scan lines and data lines are located on different metal layers in the driving circuit layer 120. The signal feed line and scan line are disposed on the same layer, and the lower electrode of the capacitive pressure sensing unit is disposed on the same layer as the data line; alternatively, the signal feed line and lower electrode are disposed on the same layer as the scan line and on a different layer than the data line; or alternatively, the signal feed line and lower electrode are disposed on the same layer as the data line and on a different layer than the scan line. Those skilled in the art can select and design according to process requirements.

[0048] The display panel 1 further includes a first insulating isolation layer 710, which is disposed between the driving circuit layer 120 and the display layer 200 and the sensing layer 300, for electrically isolating the driving circuit layer 120 from the display layer 200 and the sensing layer 300 above it. The first insulating isolation layer 710 has vias 711 filled with conductive material, allowing the display unit 210 and the sensing unit 310 to be electrically connected to corresponding lines in the driving circuit layer 120 through the vias 711. In one embodiment, the material of the first insulating isolation layer 710 includes silicon dioxide.

[0049] See Figure 3 In one embodiment of this application, the display panel 1 includes a deformation layer 500, which is located on the side of the flexible driving substrate 100 away from the display layer 200, and is used to drive the flexible driving substrate 100 and the display layer 200 to bend.

[0050] Specifically, the display panel 1 also includes a deformation layer 500, which is disposed on the side of the flexible driving substrate 100 opposite to the display layer 200. The deformation layer 500 is used to generate deformation under external excitation, thereby causing the flexible driving substrate 100 and the display layer 200 located on the flexible driving substrate 100 to bend together, so that the panel can actively switch from a flat state to a bent or folded state.

[0051] The deformation layer 500 can be made of an electro-deformable material or a thermo-deformable material. When voltage or heat is applied to the deformation layer 500, its volume expands or contracts, generating non-uniform stress at the bottom of the substrate, forcing the entire panel to bend in a preset direction. By controlling the strength or application area of ​​the excitation signal, different bending curvatures and different bending positions can be controlled and adjusted.

[0052] The display panel 1 also includes a second insulating isolation layer 720, which is disposed on the side of the deformation layer 500 away from the flexible driving substrate 100. This second insulating isolation layer 720 electrically isolates the deformation layer 500 from the external environment while protecting the deformation layer 500. In one embodiment, the second insulating isolation layer 720 is made of a flexible insulating material to ensure that it does not affect the overall bending performance of the display panel 1.

[0053] It should be noted that, Figure 3 The main purpose is to demonstrate the structure of the deformation layer 500, therefore... Figure 3 The specific film layer of the display unit 210 is not shown in the figure.

[0054] See Figure 4In one embodiment of this application, the deformation layer 500 includes a plurality of deformation units 510, each of which is provided with a lead 511. The lead 511 of each deformation unit 510 is connected to a signal source (not shown). The deformation unit 510 receives the electrical signal from the signal source through the lead 511 and deforms individually under the action of the electrical signal, thereby causing the flexible driving substrate 100 to bend in the corresponding area.

[0055] Specifically, the deformation layer 500 includes multiple deformation units 510, each of which is provided with a lead 511. The lead 511 of each deformation unit 510 is connected to a signal source. The deformation unit 510 receives electrical signals from the signal source through the lead 511. The electrical signals received by each deformation unit 510 are independent of each other and do not affect each other.

[0056] The deformation unit 510 deforms individually under the action of an electrical signal. The deformation direction and deformation amount of different deformation units 510 are determined by the magnitude of the electrical signal they receive. After each deformation unit 510 deforms, local stress is generated at the corresponding position on the bottom of the flexible driving substrate 100, causing the flexible driving substrate 100 to bend in the corresponding area.

[0057] Since each deformation unit 510 is driven independently, the flexible driving substrate 100 can exhibit different bending directions and bending curvatures in different areas, thereby realizing multi-area differentiated bending of the display panel 1.

[0058] In one embodiment of this application, the deformation unit 510 is a piezoelectric ceramic unit. The piezoelectric ceramic unit generates the inverse piezoelectric effect under the action of an electrical signal and undergoes stretching and deformation along the thickness direction of the display panel 1.

[0059] Specifically, the deformation unit 510 is a piezoelectric ceramic unit. When the electrical signal applied to a piezoelectric ceramic unit changes, the piezoelectric ceramic unit generates the inverse piezoelectric effect, thereby undergoing stretching and deformation along the thickness direction of the display panel 1. Each piezoelectric ceramic unit is not affected by other piezoelectric ceramic units and can drive the flexible driving substrate 100 in different areas to produce its own independent bending.

[0060] Because piezoelectric ceramics have extremely fast response speeds, typically in the millisecond or even microsecond range, and the deformation has a good linear relationship with the amplitude of the applied voltage, they can precisely control the bending state of the display panel 1.

[0061] In one embodiment, the piezoelectric ceramic unit is a lead zirconate titanate (PZT) piezoelectric ceramic unit with a thickness of 10 μm and a piezoelectric constant of 300 pC / N. This piezoelectric ceramic unit can generate sufficient deformation in the thickness direction of the display panel 1 under a relatively low driving voltage.

[0062] In one embodiment, each piezoelectric ceramic unit is 10 mm in size. With an array density of 10 units / dm² for the piezoelectric ceramic units, this embodiment provides each piezoelectric ceramic unit with sufficient driving force to bend the local flexible drive substrate 100. At the same time, the density of 10 units / dm² allows the display panel 1 to form a smooth transition curve when bent, without producing a crease due to the excessively sparse density of the piezoelectric ceramic units.

[0063] In one embodiment of this application, a display device is provided, which includes a display panel 1 as described in any of the above embodiments. Furthermore, the display device also includes a host computer. The host computer is connected to the display panel 1 and is used to receive sensing data from the sensing unit 310 and control the display panel 1 to display an image based on the sensing data.

[0064] Specifically, a signal connection is established between the host and the display panel 1 to receive sensing data from the sensing unit 310 in the display panel 1. This sensing data includes distance sensing data and pressure sensing data. The distance sensing data is received by the distance sensing unit 311 and includes, but is not limited to, the outline information, spatial position information, and distance information between the external object and the display panel 1. The pressure sensing data is received by the pressure sensing unit 312 and includes, but is not limited to, the magnitude and distribution of pressure when the external object touches the display panel 1. Based on the distance sensing data and pressure sensing data, the host controls the display panel 1 to display corresponding screen content. For example, the host automatically adjusts the scaling ratio of the displayed image to adapt to the viewing distance based on the distance between the external object and the display panel 1, or recognizes gesture commands and executes corresponding interactive responses based on the magnitude and distribution of pressure applied by the external object when touching the display panel 1.

[0065] In one embodiment, a signal connection is established between the host and the display panel 1 via a flexible ribbon cable. In another embodiment, the host and the display panel 1 can also be connected via a wireless communication module.

[0066] See Figure 5 as well as Figure 6 In one embodiment of this application, the display device is a fitting device; the display device includes a display panel 1 including a deformation layer 500 in any of the above embodiments; the host is used to respond to the user entering the collection range of the distance sensing unit 311, to collect a first distance d1 between a plurality of sampling points 601 on the user's surface and the distance sensing unit 311 through the distance sensing unit 311, to depict the user's body shape outline based on the first distance d1; to calculate the target display curvature data of the display panel 1 based on the body shape outline; and to drive the flexible driving substrate 100 and the display layer 200 to bend through the deformation layer 500 based on the target display curvature data.

[0067] Specifically, Figure 5 In this diagram, A represents the flattened state of display panel 1, B represents the user's surface curve, and E represents the ground or placement plane. Figure 6 In the diagram, C represents the actual bending state of the display panel 1. When a user enters the acquisition range of the distance sensing unit 311, the distance sensing unit 311 initiates a scan, acquiring several sampling points 601 on the user's surface to obtain a first distance d1 between each sampling point 601 and the distance sensing unit 311. The distance sensing unit 311 sends the first distance d1 corresponding to each sampling point 601 to the host computer, which calculates the spatial coordinate data of each sampling point 601 to obtain the user's body contour.

[0068] The host calculates the target display curvature data required for the display panel 1 based on the acquired body contour, and converts the target display curvature data into an electrical signal and sends it to the deformation layer 500. Under the action of the electrical signal, the deformation layer 500 deforms, causing the flexible driving substrate 100 and the display layer 200 to bend to different degrees in corresponding areas, i.e., the display panel 1 bends from... Figure 5 State A in the middle becomes Figure 6 In state C, the first distance d1 between each sampling point 601 and the distance sensing unit 311 is kept basically consistent, and the distance between each sampling point 601 and the display panel 1 is kept basically consistent. By controlling the display panel 1 to bend initially, the curved shape of the entire display panel 1 is basically matched with the user's body shape.

[0069] In one embodiment, the electrical signal includes a voltage signal, the adjustable range of which is 0~12V. Specifically, if the user is a human body, the adjustable range of the voltage signal corresponding to the shoulder area of ​​the display panel 1 is 10~12V, the adjustable range of the voltage signal corresponding to the chest area of ​​the display panel 1 is 7~9V, and the adjustable range of the voltage signal corresponding to the waist and hip area of ​​the display panel 1 is 4~6V.

[0070] In one embodiment, the display panel 1 is suspended from a bracket via hooks or similar structures. The deformation layer 500, while suspended, can independently drive each deformation unit 510 to deform, allowing the display panel 1 to present the desired curved shape when suspended. In other embodiments, the display panel 1 can also be placed on the ground. The installation method of the display panel 1 can be selected and set according to actual needs.

[0071] See Figure 6In one embodiment of this application, the host is further configured to: after driving the flexible driving substrate 100 and the display layer 200 to bend through the deformation layer 500 according to the target display curvature data, detect the second distance d2 between the distance sensing unit 311 and the reference surface 800 through the distance sensing unit 311; obtain the actual display curvature data of the display panel 1 according to the second distance d2; in response to the difference between the actual display curvature data and the target display curvature data being greater than the error threshold, drive the flexible driving substrate 100 and the display layer 200 to bend again through the deformation layer 500; and send the three-dimensional virtual clothing model to the display panel 1 for curved surface adaptation display.

[0072] Specifically, after the display panel 1 undergoes initial bending, the distance sensing unit 311 detects a second distance d2 between the distance sensing unit 311 and the reference surface 800, and obtains the actual display curvature of the display panel 1 based on the second distance d2. The reference surface 800 is placed on the side of the display panel 1 furthest from the user.

[0073] If the difference between the actual display curvature data and the target display curvature data at a certain point on the display panel is greater than the error threshold, it is determined that the fit of the display panel 1 at that point is substandard. The host calculates the required target deformation of the display panel 1 at that point based on the difference and determines the corresponding electrical signal value, and sends the corresponding electrical signal to the corresponding deformation unit 510 in the deformation layer 500. After receiving the corresponding electrical signal, the deformation unit 510 undergoes another stretching and deformation along the thickness direction of the display panel 1, causing the flexible driving substrate 100 and the display layer 200 to bend again in the corresponding area, thereby precisely adjusting the curvature of the display panel 1.

[0074] The aforementioned error threshold allows for a certain fluctuation in the difference between the actual displayed curvature data and the target displayed curvature data around the target distance value.

[0075] After the display panel 1 is bent a second time, the host computer detects the second distance d2 between the distance sensing unit 311 and the reference surface 800 again through the distance sensing unit 311, recalculates the difference between the actual display curvature data and the target display curvature data, and determines whether it has fallen within the error threshold range. If the difference still exceeds the threshold range, the host computer continues to adjust the electrical signal sent to the corresponding deformation unit 510, driving the deformation unit 510 to extend and retract further until the difference between the actual display curvature data and the target display curvature data of the display panel 1 at that point is less than or equal to the error threshold. At this point, it is determined that the fit of the display panel 1 at that point meets the standard, and the host computer stops adjusting the corresponding deformation unit 510.

[0076] The host computer sequentially and independently performs the aforementioned detection, comparison, driving, and judgment steps for each part of the display panel 1 until the difference between the actual display curvature data and the target display curvature data at each point on the display panel 1 is less than or equal to the error threshold. Ultimately, this ensures that the curvature of the entire display panel 1 matches the user's body shape, thus achieving the desired result. Figure 6 The D state in the diagram. Where D represents the target bending state of the display panel.

[0077] The host stops adjusting the display panel 1 and sends the pre-stored 3D virtual clothing model to the display panel 1. The display panel 1 performs surface adaptation display on the virtual clothing so that the virtual fitting effect observed by the user visually fits their own body shape characteristics.

[0078] In one embodiment, the bending state of the display panel 1 can be defined as the target bending state if the fit of the display panel 1 is greater than or equal to 95%. Specifically, the area on the display panel 1 where the difference between the actual display curvature data and the target display curvature data is less than or equal to an error threshold occupies at least 95% of the total area of ​​the display panel 1. If the fit is not up to standard, the host controls the corresponding deformation unit 510 to perform expansion and contraction deformation, thereby fine-tuning the curvature of the corresponding area of ​​the display panel 1. When the fit requirement is met, the display panel 1 maintains its current bending shape and displays the fitting screen.

[0079] In one embodiment, the host computer is also used to respond to whether the user's posture while trying on clothes is correct. Specifically, before the user tries on clothes, i.e., when the display panel 1 is still in a flat state, when the distance sensing unit 311 continuously collects sampling points 601 on the user's surface, the host computer determines the user's current body posture based on the spatial coordinate data of the sampling points 601. For example, when the user is a human, the host computer detects whether the user is standing upright, or whether there are non-standard postures such as squatting, lying down, leaning forward, hunching over, or turning to the side. When the host computer detects that the user is not trying on clothes in an upright posture, it triggers a reminder signal, displays text or icon prompts on the display panel 1, or issues voice prompts through the device's built-in speaker to guide the user to adjust to a standard standing posture. This function aims to ensure the accuracy of body contour acquisition and avoid deviations in the surface adaptation of the virtual clothing model due to incorrect user posture, thereby affecting the reference value of the try-on effect. In addition, when the host detects a significant change in the user's posture during the fitting process, such as switching from standing to sitting or turning at an excessive angle, the host will also issue a corresponding posture reminder, suggesting that the user maintain a stable posture to maintain the matching accuracy between the displayed image and the body shape.

[0080] In one embodiment, a camera (not shown) is also provided on the display panel 1, facing the user's direction, for real-time acquisition of the user's body posture image or position change information. When the user is trying on clothes, i.e., when the display panel 1 maintains its current curved shape and displays the try-on image, if the camera detects that the user has moved or changed posture, it sends a trigger signal to the host. The host recalculates the relative positional relationship between the user and the display panel 1 based on the trigger signal, and adjusts the curvature of each area of ​​the display panel 1 accordingly, so that the curved shape of the display panel 1 always conforms to the user's current body posture.

[0081] In one embodiment, the host also responds to user interaction information. Specifically, when a user touches the display panel 1, the pressure sensing unit 312 collects touch position and pressure distribution data and transmits it to the host. The host identifies the user's click or swipe operation based on the touch position, determines the intention of the operation based on the pressure magnitude, and thus performs fine-tuning of the virtual clothing model. For example, clicking can adjust the size of the three-dimensional virtual clothing, or pressing can magnify a part of the clothing or switch the fabric material.

[0082] To better understand the technical solution of this application, the preparation steps of the display panel 1 of this application will be described below: S100: Fabrication of flexible driving substrate 100; S200: Fabrication of driving circuit layer 120; S300: Preparation of the insulating layer; S400: Fabrication of display layer 200: S500: Fabrication of sensing layer 300; S600: Prepare a deformation layer of 500; S700: Fabrication of encapsulation layer 400.

[0083] Specifically, in step S100, a large-size polyimide motherboard is first cut to a preset size using a laser cutting machine, with the cutting accuracy controlled within ±0.05mm. The cut substrate is then placed in a plasma cleaning chamber, where argon gas is introduced at 300W power and 0.5Pa pressure for 60s to remove organic impurities and particulate matter from the surface. Next, oxygen is introduced for 30s of oxygen plasma treatment at 200W power to reduce the surface contact angle to below 30° to improve film adhesion. Subsequently, a 1μm thick photoresist is spin-coated, and a uniform wiring substrate is prepared using photolithography. Finally, an optical microscope is used to inspect surface defects, and an atomic force microscope is used to detect surface roughness to ensure that the quality of the flexible driving substrate 100 meets the requirements of subsequent processes.

[0084] In step S200, a Mo / Al / Mo composite film with a total thickness of 0.3 μm is first deposited sequentially by magnetron sputtering, consisting of a Mo layer, an Al layer, and a Mo layer. Subsequently, a patterning process, including spin coating of photoresist, photolithography exposure, development, etching, and resist removal, is performed to form a metal wiring network shared by the display driving circuit, sensing circuit, and sensing electrodes on the flexible driving substrate 100.

[0085] In step S300, a silicon dioxide (SiO2) insulating layer with a thickness of 0.2 μm is first deposited on the surface of the substrate with completed common metal wiring using a chemical vapor deposition process; then, a via pattern is formed on the insulating layer using a photolithography process, and after etching, the pad area of ​​the sensing electrode and the contact position that needs to be connected to the subsequent ITO and other electrodes are exposed.

[0086] In step S400, an ITO layer is first deposited by magnetron sputtering, followed by photolithography etching to form an electrode pattern; subsequently, the gas pressure is below 10... -5 In a high vacuum environment, hole injection layer 212, hole transport layer 213, light emission layer 214, electron transport layer 215 and electron injection layer 216 are sequentially vapor-deposited; then Ag-Mg alloy is vapor-deposited as cathode layer 217; finally, SiO2 passivation layer is deposited to protect the edge of display unit 210.

[0087] In step S500, the sensing unit 310 is connected to the common metal wiring layer through a via on the insulating layer to achieve electrical connection with the driving circuit layer 120; then the sensitivity of each sensing unit 310 is calibrated to ensure consistent response.

[0088] In step S600, a piezoelectric ceramic film with a thickness of 10 μm is deposited on the flexible driving substrate 100 using magnetron sputtering. The piezoelectric ceramic film is then polarized by applying an electric field of 10 kV / mm at 120°C for 30 min to achieve stable piezoelectric properties. Finally, the piezoelectric ceramic film is divided into 10 mm sections using photolithography and dry etching. The piezoelectric ceramic units are 10mm in diameter, with insulating gaps between them to ensure electrical isolation. Au electrodes with a thickness of 0.1μm are deposited on the upper and lower surfaces of the segmented piezoelectric ceramic units to serve as driving electrodes. Finally, the electrode leads of each piezoelectric ceramic unit are connected to the signal source interface using an ultrasonic welding process, so that each piezoelectric ceramic unit can be controlled independently.

[0089] In step S700, the PI-fluorinated acrylic composite film is cut to a size 6mm larger than the flexible driving substrate 100. The cut composite film is placed in a vacuum degassing machine and treated at a vacuum degree of 0.1MPa for 30 minutes to remove air bubbles from the film. The degassed composite film is aligned with the panel prepared in step S600 and placed in a vacuum laminator, and laminated at 80℃ and 0.5MPa pressure for 10 minutes to ensure the composite film adheres tightly to the panel surface. The composite film is then irradiated with a 365nm wavelength, 1000W ultraviolet lamp for 5 minutes to cause cross-linking and curing. Finally, UV sealant is applied to the edges of the composite film and cured with ultraviolet light to form a complete edge sealing structure, achieving full encapsulation and sealing of the panel. A complete display panel 1 is thus formed.

[0090] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A display panel, characterized in that, include: Flexible driving substrate; A display layer is disposed on one side of the substrate, and the display layer includes at least two display units; A sensing layer is disposed on the same side of the substrate as the display layer; the sensing layer includes a sensing unit; the sensing unit includes a distance sensing unit and a pressure sensing unit; the sensing unit is located between two adjacent display units and is disposed on the same layer as the display layer; An encapsulation layer that covers the display layer and the sensing layer; A deformation layer is located on the side of the flexible driving substrate away from the display layer, and is used to cause the flexible driving substrate and the display layer to bend. The deformation layer includes multiple deformation units, each of which is provided with a lead wire, and the lead wire of each deformation unit is connected to a signal source. The deformation unit receives the electrical signal from the signal source through the lead wire, and deforms independently under the action of the electrical signal, thereby causing the flexible driving substrate to bend in the corresponding area.

2. The display panel according to claim 1, characterized in that, The distance sensing unit is located between two adjacent display units in the first direction; The pressure sensing unit is located between two adjacent display units in the second direction; The first direction intersects with the second direction.

3. The display panel according to claim 1, characterized in that, The flexible driving substrate includes a flexible substrate and a driving circuit layer. The driving circuit layer is located between the flexible substrate and the display layer. The driving circuit layer includes the driving lines of the display unit and the sensing lines and sensing electrodes of the sensing unit. The sensing circuit, the sensing electrode, and at least one metal layer in the driving circuit are disposed on the same layer.

4. The display panel according to claim 1, characterized in that, The deformation unit is a piezoelectric ceramic unit. Under the action of the electrical signal, the piezoelectric ceramic unit generates the inverse piezoelectric effect and undergoes expansion and contraction deformation along the thickness direction of the display panel.

5. The display panel according to claim 2, characterized in that, The distance sensing unit includes a millimeter-wave sensing unit, which is used to transmit and receive millimeter-wave signals to detect the outline of an external object. And / or, the pressure sensing unit includes a capacitive pressure sensing unit, which is used to detect the pressure distribution and pressure magnitude when an external object contacts the display panel.

6. The display panel according to claim 1, characterized in that, The encapsulation layer is made of polyimide and fluorinated acrylic, and the thickness of the encapsulation layer ranges from 4 μm to 6 μm.

7. A display device, characterized in that, include: The display panel as described in any one of claims 1-6; The host is connected to the display panel and is used to receive the sensing data of the sensing unit and control the display panel to display the screen according to the sensing data.

8. The display device according to claim 7, characterized in that, The display device is a fitting device; the display device includes a display panel as described in any one of claims 1-6; the host is used for: In response to a user entering the sampling range of the distance sensing unit, the distance sensing unit collects a first distance between several sampling points on the user's surface and the distance sensing unit, and the user's body shape outline is drawn based on the first distance. The target display curvature data of the display panel is calculated based on the body shape contour. Based on the target display curvature data, the flexible driving substrate and the display layer are driven to bend through the deformation layer.

9. The display device according to claim 8, characterized in that, The host is also used for: After the flexible driving substrate and the display layer are driven to bend by the deformation layer according to the target display curvature data, the second distance between the distance sensing unit and the reference surface is detected by the distance sensing unit. The actual display curvature data of the display panel is obtained based on the second distance; In response to the difference between the actual display curvature data and the target display curvature data being greater than an error threshold, the flexible driving substrate and the display layer are driven to bend again through the deformation layer; The 3D virtual clothing model is sent to the display panel for curved surface adaptation display.

10. The display device according to claim 9, characterized in that, The host is also used for: After the 3D virtual clothing model is sent to the display panel for curved surface adaptation display, the 3D virtual clothing model is adjusted in response to the user's interaction information; The interactive information includes at least one of the following: the user clicking the display panel, the user swiping the display panel.

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