Display panel, display module, veneer assembly, method for manufacturing veneer assembly, and vehicle

Abstract

The present application discloses a display panel, a display module, a veneer assembly, a manufacturing method of the veneer assembly and a vehicle. The display panel includes: a substrate; a light-emitting unit, which is arranged on one side of the substrate; a photoelectric conversion unit, wherein the photoelectric conversion unit and the light-emitting unit are arranged in the same layer, and the photoelectric conversion unit and the light-emitting unit are arranged at intervals in a direction parallel to the plane where the substrate is located, and the photoelectric conversion unit is used to convert the light emitted from the outside to the photoelectric conversion unit into electrical energy. The photoelectric conversion unit is used to convert the light emitted from the outside to the photoelectric conversion unit into electrical energy, that is, the photoelectric conversion unit can convert external light into current for use by the display panel or other components in the device where the display panel is used, thereby reducing the power consumption of the display panel and improving the performance of the display panel.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular relates to a display panel, a display module, a decorative surface assembly, a method for manufacturing a decorative surface assembly, and a vehicle. Background Art

[0002] With the development of science and technology, smart travel and smart cockpit technologies are developing rapidly. The intelligent cockpit aims to integrate a variety of IT and artificial intelligence technologies to create a new integrated digital platform in the car, provide drivers with an intelligent experience, and promote driving safety. Under the premise of safe driving, the intelligent cockpit provides drivers with an intelligent closed-loop human-vehicle interaction experience, and the demand for external and internal displays is more urgent.

[0003] However, the performance of existing display panels cannot meet the requirements.

[0004] Therefore, there is an urgent need for a new display panel, display module, decorative assembly, decorative assembly manufacturing method and vehicle. Summary of the invention

[0005] The embodiments of the present application provide a display panel, a display module, a finishing assembly, a method for manufacturing a finishing assembly, and a vehicle. The photoelectric conversion unit is used to convert external light directed toward the photoelectric conversion unit into electrical energy, that is, the photoelectric conversion unit can convert external light into current for use by the display panel, thereby reducing the power consumption of the display panel and improving the performance of the display panel.

[0006] On the one hand, an embodiment of the present application provides a display panel, including: a substrate; a light-emitting unit, which is arranged on one side of the substrate; and a photoelectric conversion unit, wherein the photoelectric conversion unit and the light-emitting unit are arranged in the same layer and are spaced apart from each other in a direction parallel to the plane where the substrate is located, and the photoelectric conversion unit is used to convert external light emitted to the photoelectric conversion unit into electrical energy.

[0007] According to one aspect of the present application, it also includes a pixel definition layer arranged on one side of the substrate, the pixel definition layer includes a first opening and a second opening arranged at intervals; the light emitting unit is arranged in the first opening, and the photoelectric conversion unit is arranged in the second opening; preferably, the thickness of the display panel is greater than or equal to 38μm and less than or equal to 40μm; preferably, the display panel also includes a shading layer arranged in the second opening, and the photoelectric conversion unit is at least partially reused as the shading layer; preferably, the display panel is a flexible display panel.

[0008] According to one aspect of the present application, the display panel further comprises an array layer disposed between the substrate and the pixel definition layer, the array layer comprising a pixel circuit and a power transmission circuit, the pixel circuit being electrically connected to the light-emitting unit, and the power transmission circuit being electrically connected to the photoelectric conversion unit; preferably, in a direction away from the plane where the substrate is located, the array layer comprises at least two conductive layers stacked and arranged, and the power transmission circuit and at least one conductive layer are arranged in the same layer; preferably, the display panel further comprises an encapsulation layer, the encapsulation layer is at least partially located on a side of the light-emitting unit away from the substrate, and the encapsulation layer comprises a third opening, the third opening is connected to the second opening to expose at least a portion of the photoelectric conversion unit; preferably, the encapsulation layer comprises a first encapsulation layer, the first encapsulation layer comprises an inorganic material; preferably, the encapsulation layer comprises a second encapsulation layer disposed on a side of the first encapsulation layer away from the substrate, the second encapsulation layer comprises an organic material; preferably, the encapsulation layer comprises a third encapsulation layer disposed on a side of the second encapsulation layer away from the substrate, the third encapsulation layer comprises an inorganic material; preferably, the first encapsulation layer and the third encapsulation layer are made of the same material.

[0009] According to one aspect of the present application, in a direction away from the plane where the substrate is located, the photoelectric conversion unit includes a first electrode layer, a photoelectric conversion layer and a second electrode layer that are stacked; preferably, the material of the photoelectric conversion layer includes at least one of single crystal silicon, polycrystalline silicon, amorphous silicon and perovskite; preferably, the power transmission circuit includes a first signal line and a second signal line, the first signal line is electrically connected to the first electrode layer, and the second signal line is electrically connected to the second electrode layer; preferably, the first electrode layer is one of the positive electrode or the negative electrode, and the second electrode layer is the other of the positive electrode or the negative electrode; preferably, in a direction away from the plane where the substrate is located, the light-emitting unit includes a third electrode layer, a light-emitting functional layer and a fourth electrode layer that are stacked; the third electrode layer and the first electrode layer are arranged on the same layer, the fourth electrode layer and the second electrode layer are arranged on the same layer, the light-emitting functional layer and the photoelectric conversion layer are arranged on the same layer, and the materials of the light-emitting functional layer and the photoelectric conversion layer are different.

[0010] Another aspect of the present invention provides a display module, comprising: a display panel, wherein the display panel is the display panel described in any of the above embodiments; and an outer decorative layer, which is arranged on the light emitting side of the display panel, and the light transmittance of the outer decorative layer is greater than or equal to 10%.

[0011] According to another aspect of the present application, the thickness of the exterior layer is greater than or equal to 250 μm and less than or equal to 400 μm; preferably, the exterior layer includes a paint layer; preferably, the display module also includes a pressure-sensitive adhesive layer, a support layer and a buffer layer which are arranged on the side of the display panel away from the exterior layer and are stacked in a direction away from the display panel; preferably, the display module is a flexible display module.

[0012] Another aspect of the present invention provides a facing assembly, comprising: a shell having an outer surface; a display module, the display module being arranged on the outer surface of the shell, and the display module being the display module described in any of the above embodiments.

[0013] According to another aspect of the present application, the display module and the shell are bonded by an adhesive layer; preferably, the material of the adhesive layer includes water-based adhesive or optical adhesive; preferably, the viscosity of the water-based adhesive is greater than or equal to 2000 mPa.s and less than or equal to 13000 mPa.s, and / or, the density of the water-based adhesive is greater than or equal to 1.02 g / ml and less than or equal to 1.12 g / ml, and / or, the solid content of the water-based adhesive is greater than or equal to 45%; preferably, the material of the water-based adhesive includes polyurethane polymer and water.

[0014] Another aspect of the present invention provides a vehicle, comprising a veneer assembly, wherein the veneer assembly is the veneer assembly described in any of the above embodiments.

[0015] According to another aspect of the present application, the vehicle further includes a photoelectric conversion external circuit and an electric energy storage unit electrically connected to the photoelectric conversion external circuit, the photoelectric conversion external circuit is electrically connected to the electric energy transmission circuit of the display panel in the veneer assembly; the photoelectric conversion external circuit includes an external transmission circuit and an electromagnetic compatibility protection circuit connected thereto; preferably, the external transmission circuit includes a voltage stabilizing unit and a filtering unit. Preferably, the electric energy storage unit is at least electrically connected to the light-emitting unit of the display panel.

[0016] Another aspect of the present invention provides a method for manufacturing a facing assembly, comprising: providing a shell; forming an adhesive layer on the outer surface of the shell; and attaching a display module to the adhesive layer, wherein the display module is the display panel described in any of the above embodiments.

[0017] According to another aspect of the present application, the step of forming a glue layer on the outer surface of the shell includes: mixing at least two glue materials to form the material of the glue layer; coating the material of the glue layer on the outer surface of the shell; and drying and activating the material of the glue layer to form the glue layer.

[0018] According to another aspect of the present application, the step of laminating the display module on the adhesive layer includes: laminating the display module and the adhesive layer by a lamination process or a vacuum forming process; preferably, the step of laminating the display module and the adhesive layer by a lamination process includes: pre-pressing the display module and the adhesive layer; activating the adhesive layer at 60°C to 80°C for at least 1s to 5min; cooling the adhesive layer for at least 1s to 5min; pre-pressing and laminating the display module and the adhesive layer; preferably, the step of laminating the display module and the adhesive layer by the vacuum forming process includes: placing the display module on the adhesive layer; vacuum forming the display module for 5s to 3min to laminate the display module.

[0019] Compared with the prior art, the display panel provided in the embodiment of the present invention includes a substrate, a light-emitting unit and a photoelectric conversion unit. The photoelectric conversion unit and the light-emitting unit are arranged in the same layer, which at least means that the formation positions of the photoelectric conversion unit and the light-emitting unit are located in the same layer. No additional film layer is required to form the photoelectric conversion unit, which effectively reduces the film thickness of the display panel. The photoelectric conversion unit and the light-emitting unit are arranged at intervals to avoid mutual interference between the two, thereby ensuring the light-emitting efficiency of the light-emitting unit and the light-incoming efficiency of the photoelectric conversion unit. In this embodiment, the photoelectric conversion unit is used to convert external light directed to the photoelectric conversion unit into electrical energy, that is, the photoelectric conversion unit can convert external light into current for use by the display panel or other components in the device using the display panel, thereby reducing the power consumption of the display panel and improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0022] Figure 2 An embodiment of the present invention Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 An embodiment of the present invention provides Figure 2 Cross-section at the middle BB;

[0024] Figure 4 Another embodiment of the present invention provides Figure 2Cross-section at the middle BB;

[0025] Figure 5 is a structural schematic diagram of a display module provided by an embodiment of the present invention;

[0026] Figure 6 is a structural schematic diagram of a facing assembly provided by an embodiment of the present invention;

[0027] Figure 7 is a structural schematic diagram of a facing assembly provided by another embodiment of the present invention;

[0028] Figure 8 is a flow chart of a method for manufacturing a facing assembly provided by an embodiment of the present invention;

[0029] Fig. 9 is a flow chart of a lamination process provided by an embodiment of the present invention;

[0030] Fig.10 The present invention provides a flow chart of a vacuum forming process.

[0031] In the attached figure:

[0032] 10-display panel; 100-display module; 20-housing; 30-adhesive layer; 40-exterior layer; 50-foam layer; 60-support layer; 70-pressure-sensitive adhesive layer;

[0033] 1-substrate; 2-pixel definition layer; 3-light-emitting unit; 31-third electrode layer; 32-light-emitting functional layer; 33-fourth electrode layer; 4-photoelectric conversion unit; 41-first electrode layer; 42-photoelectric conversion layer; 43-second electrode layer; 5-power transmission circuit; 6-packaging layer; 61-first packaging layer; 62-second packaging layer; 63-third packaging layer; C-storage capacitor; C1-first plate; C2-second plate; K1-first opening; K2-second opening; K3-third opening; M1-first conductive layer; M2-second conductive layer; M3-third conductive layer; M4-fourth conductive layer; M5-fifth conductive layer; S-source; D-drain; G-gate; Y-active layer. DETAILED DESCRIPTION

[0034] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0036] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0037] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0038] The embodiments of the present application provide a display panel, a display module, a veneer assembly, a method for manufacturing a veneer assembly, and a vehicle. Figures 1 to 10 Various embodiments of a display panel, a display module, a decorative surface assembly, a method for manufacturing the decorative surface assembly, and a vehicle are described.

[0039] See also Figure 1 , Figure 2 , Figure 3 A display panel 10 provided in an embodiment of the present application includes: a substrate 1; a light-emitting unit 3, which is arranged on one side of the substrate 1; a photoelectric conversion unit 4, wherein the photoelectric conversion unit 4 and the light-emitting unit 3 are arranged in the same layer, and the photoelectric conversion unit 4 and the light-emitting unit 3 are arranged at intervals along a direction parallel to the plane where the substrate 1 is located, and the photoelectric conversion unit 4 is used to convert external light emitted to the photoelectric conversion unit 4 into electrical energy.

[0040] The display panel 10 provided in the embodiment of the present invention includes a substrate 1, a light-emitting unit 3 and a photoelectric conversion unit 4. The photoelectric conversion unit 4 and the light-emitting unit 3 are arranged in the same layer, which at least means that the formation positions of the photoelectric conversion unit 4 and the light-emitting unit 3 are located in the same layer, and no additional film layer is required to form the photoelectric conversion unit 4, which effectively reduces the film thickness of the display panel 10, and the photoelectric conversion unit 4 and the light-emitting unit 3 are arranged at intervals to avoid mutual interference between the two, thereby ensuring the light-emitting efficiency of the light-emitting unit 3 and the light-incoming efficiency of the photoelectric conversion unit 4. In this embodiment, the photoelectric conversion unit 4 is used to convert external light directed to the photoelectric conversion unit 4 into electrical energy, that is, the photoelectric conversion unit 4 can convert external light into current for use by the display panel 10 or other components in the device in which the display panel is applied, thereby reducing the power consumption of the display panel 10 and improving the performance of the display panel 10.

[0041] like Figure 2 As shown, the photoelectric conversion unit 4 may be between adjacent light emitting units 3 .

[0042] In this embodiment, the light-emitting unit 3 can adopt an OLED (Organic Light-Emitting Diode) light-emitting unit, a QLED (Quantum Dot Light Emitting Diodes) or (Micro-OLED or Micro-LED, a micro-planar light-emitting unit), etc. The following embodiments take the light-emitting unit 3 as an OLED light-emitting unit for example.

[0043] The photoelectric conversion unit 4 may include semiconductor materials. For example, the photoelectric conversion unit 4 includes at least one of single crystal silicon, polycrystalline silicon, and amorphous silicon. Sunlight shines on the semiconductor pn junction to form new hole-electron pairs. Under the action of the pn junction electric field, holes flow from the p region to the n region, and electrons flow from the n region to the p region. When the circuit is connected, current is formed, that is, light energy such as solar energy can be converted into electrical energy through the photoelectric conversion unit 4.

[0044] Optionally, the display panel is a flexible display panel, and correspondingly, the substrate 1 and other film layers need to be made of flexible materials.

[0045] See also Figure 3 or Figure 4 In some optional embodiments, the display panel 10 further includes a pixel definition layer 2 disposed on one side of the substrate 1, the pixel definition layer 2 includes a first opening K1 and a second opening K2 that are spaced apart; the light emitting unit 3 is disposed in the first opening K1, and the photoelectric conversion unit 4 is disposed in the second opening K2.

[0046] In this embodiment, a first opening K1 and a second opening K2 can be respectively opened on the pixel definition layer 2 for setting the light-emitting unit 3 and the photoelectric conversion unit 4. Since the photoelectric conversion unit 4 needs to be set corresponding to the non-display area of ​​the display panel 10, that is, the area between adjacent light-emitting units 3, the shape and size of the second opening K2 need to be set according to the arrangement and size of the light-emitting unit 3, as long as it is ensured that the second opening K2 can effectively receive external light and does not affect the normal light emission of the light-emitting unit 3.

[0047] Optionally, after the photoelectric conversion unit 4 is integrated into the display panel 10, the thickness of the display panel 10 is greater than or equal to 38 μm and less than or equal to 40 μm, which has no significant change compared to the thickness of the display panel 10 in the prior art, and effectively meets the requirements for the thickness of the display panel 10.

[0048] Optionally, the thickness of the display panel 10 may be equal to any one of 38 μm, 38.5 μm, 39 μm, 39.5 μm, and 40 μm.

[0049] See also Figure 3 or Figure 4 In some optional embodiments, the display panel 10 also includes an array layer arranged between the substrate 1 and the pixel definition layer 2, the array layer includes a pixel circuit and a power transmission circuit 5, the pixel circuit is electrically connected to the light-emitting unit 3, and the power transmission circuit 5 is electrically connected to the photoelectric conversion unit 4.

[0050] In this embodiment, the pixel circuit can send a driving signal to the light-emitting unit 3 to control the light-emitting display of the light-emitting unit 3, and the electric energy generated by the photoelectric conversion unit 4 can be directly transmitted to the electric energy storage part outside the display panel 10 through the electric energy transmission circuit 5 located in the array layer, and then the electric energy storage part is transmitted back to the display panel 10 or other components outside the display panel 10 that need to be driven by electric energy when in use.

[0051] Optionally, along the direction away from the plane where the substrate 1 is located, the array layer includes at least two conductive layers stacked together, and the power transmission circuit 5 and at least one conductive layer are arranged on the same layer, that is, the power transmission circuit 5 can be prepared together with the conductive layer arranged on the same layer through the same process, and the two can be prepared using the same material to simplify the preparation process and reduce production costs.

[0052] Optionally, the array layer may include a first conductive layer M1, a second conductive layer M2, and a third conductive layer M3 which are arranged on one side of the substrate 1 and are stacked. An insulating layer is provided between adjacent conductive film layers. Exemplarily, the pixel circuit provided in the array layer includes a transistor and a storage capacitor C. The transistor includes an active layer Y, a gate G, a source S, and a drain D. The storage capacitor C includes a first plate C1 and a second plate C2. The material of the source S and the gate G may include a combination of one or more of molybdenum, titanium, aluminum, copper, etc. The gate G of the transistor is generally used to receive a control signal so that the transistor is turned on or off under the control of the control signal. One of the source S and the drain D of the transistor is connected to the light-emitting unit 3 to control the normal light emission of the light-emitting unit 3.

[0053] As an example, the gate G and the first electrode C1 can be located in the first conductive layer M1, the second electrode C2 can be located in the second conductive layer M2, the source S and the drain D can be located in the third conductive layer M3, and the power transmission circuit 5 can be arranged in the same layer as at least one of the first conductive layer M1, the second conductive layer M2, and the third conductive layer M3.

[0054] See also Figure 3 Optionally, the array layer also includes a fourth conductive layer M4 disposed on the side of the third conductive layer M3 away from the substrate 1, one of the source S and the drain D is electrically connected to the light-emitting unit 3 through a portion of the fourth conductive layer M4, and the power transmission circuit 5 can be disposed on the same layer as the fourth conductive layer M4.

[0055] See also Figure 4 Optionally, it also includes a fifth conductive layer M5 arranged on the side of the fourth conductive layer M4 away from the substrate 1. The fifth conductive layer M5 can be used only to set the power transmission circuit 5 to avoid interference with other signal lines or components of the array layer, thereby improving the stability of the display panel 10.

[0056] In some optional embodiments, in a direction away from the plane where the substrate 1 is located, the photoelectric conversion unit 4 includes a first electrode layer 41 , a photoelectric conversion layer 42 , and a second electrode layer 43 which are stacked.

[0057] The electric field formed by the first electrode layer 41 and the second electrode layer 43 drives the photoelectric conversion layer 42 to convert light energy into electrical energy.

[0058] Optionally, the material of the photoelectric conversion layer 42 includes at least one of monocrystalline silicon, polycrystalline silicon, amorphous silicon, and perovskite. For example, the photoelectric conversion efficiency (PCE) of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is monocrystalline silicon is 18% to 24%. For example, the photoelectric conversion efficiency of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is monocrystalline silicon can be any one of 18%, 20%, and 24%. The photoelectric conversion efficiency of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is polycrystalline silicon is 10% to 20%. For example, the photoelectric conversion efficiency of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is polycrystalline silicon can be any one of 10%, 14%, 18%, and 20%. The photoelectric conversion efficiency of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is amorphous silicon is 10% to 20%. For example, the photoelectric conversion efficiency of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is amorphous silicon can be any one of 10%, 11%, 12%, 13%, 14%, and 15%. The photoelectric conversion efficiency of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is perovskite is 20% to 30%. For example, the photoelectric conversion efficiency of the photoelectric conversion unit 4 whose photoelectric conversion layer 42 is perovskite can be any one of 20%, 24%, 26%, 28% and 30%.

[0059] Optionally, the photoelectric conversion unit 4 may also be one or more of an electron injection layer, an electron transport layer, a hole blocking layer, an electron blocking layer, a hole transport layer and a hole injection layer, which may be selected according to the specific type of the light-emitting functional layer 32 and are not particularly limited.

[0060] Optionally, the power transmission circuit 5 includes a first signal line and a second signal line, the first signal line is electrically connected to the first electrode layer 41, and the second signal line is electrically connected to the second electrode layer 43. The first signal line and the second signal line can extend to the frame position of the display panel 10, and be connected to the photoelectric conversion external circuit and the power storage unit outside the display panel 10 at the frame position.

[0061] In some optional embodiments, the display panel further includes an encapsulation layer 6, which is at least partially located on the side of the light-emitting unit 3 away from the substrate 1, and the encapsulation layer 6 includes a third opening K3, which is connected to the second opening K2 to expose at least part of the photoelectric conversion unit 4.

[0062] Optionally, the third opening K3 and the second opening K2 expose at least a portion of the first electrode layer 41 .

[0063] In this embodiment, the light emitting unit 3 may be prepared first, and then a whole layer of packaging material may be formed to achieve packaging protection for the light emitting unit 3 . The packaging material may then be patterned and the third opening K3 may be formed by etching or other processes.

[0064] Optionally, the encapsulation layer 6 includes a first encapsulation layer 61, and the first encapsulation layer 61 includes an inorganic material;

[0065] Optionally, the encapsulation layer 6 includes a second encapsulation layer 62 disposed on a side of the first encapsulation layer 61 away from the substrate 1, and the second encapsulation layer 62 includes an organic material; the organic material can be made of resin or polymer organic material, and can be specifically formed by an IJP (Inkjet printing) process.

[0066] Optionally, the encapsulation layer 6 includes a third encapsulation layer 63 disposed on a side of the second encapsulation layer 62 facing away from the substrate 1 , and the third encapsulation layer 63 includes an inorganic material.

[0067] The inorganic material may specifically be silicon nitride, silicon oxide, silicon oxynitride and the like, and may specifically be formed by a CVD (Chemical Vapor Deposition) process.

[0068] Optionally, the material of the first encapsulation layer 61 is the same as the material of the third encapsulation layer 63 , so that the first encapsulation layer 61 and the third encapsulation layer 63 can be prepared using the same equipment, which can simplify the preparation process of the display panel 10 .

[0069] In some optional embodiments, in a direction away from the plane where the substrate 1 is located, the light-emitting unit 3 includes a third electrode layer 31, a light-emitting functional layer 32 and a fourth electrode layer 33 which are stacked; the third electrode layer 31 and the first electrode layer 41 are arranged on the same layer, the fourth electrode layer 33 and the second electrode layer 43 are arranged on the same layer, the light-emitting functional layer 32 and the photoelectric conversion layer 42 are arranged on the same layer, and the materials of the light-emitting functional layer 32 and the photoelectric conversion layer 42 are different.

[0070] In this embodiment, the third electrode layer 31 and the first electrode layer 41 are arranged in the same layer. The third electrode layer 31 and the first electrode layer 41 can be formed together using the same process, and then the encapsulation layer 6 is etched to form the third opening K4, and then the photoelectric conversion layer 42 and the second electrode layer 43 are formed.

[0071] The third electrode layer 31 and the first electrode layer 41 can be prepared by the same material, or, when the performance requirements for the third electrode layer 31 and the first electrode layer 41 are different, the third electrode layer 31 and the first electrode layer 41 can also be prepared by different materials respectively, but the third electrode layer 31 and the first electrode layer 41 are located in the same layer.

[0072] The fourth electrode layer 33 and the second electrode layer 43 can be prepared by the same material, or, when the performance requirements for the fourth electrode layer 33 and the second electrode layer 43 are different, the fourth electrode layer 33 and the second electrode layer 43 can also be prepared by different materials respectively, but the fourth electrode layer 33 and the second electrode layer 43 are at least partially located in the same layer.

[0073] Optionally, since the second electrode layer 43 is formed after the encapsulation layer 6 is formed, the second electrode layer 43 may partially extend to the side of the encapsulation layer 6 facing away from the substrate 1 .

[0074] The light-emitting functional layer 32 and the photoelectric conversion layer 42 are arranged in the same layer, which only represents the positional relationship between the two. Since the functions of the two are different, the materials of the two are also different and they can be prepared separately.

[0075] Optionally, the first electrode layer is one of the positive electrode and the negative electrode, and the second electrode layer is the other of the positive electrode and the negative electrode.

[0076] See also Figure 5 The embodiment of the present invention further provides a display module 100, comprising: a display panel 10, the display panel being the display panel 10 in any of the above embodiments; an outer decorative layer 40, arranged on the light emitting side of the display panel 10, and the light transmittance of the outer decorative layer 40 is greater than or equal to 10%.

[0077] When the display module 100 provided in this embodiment is applied to a vehicle, in order to improve the efficiency of the display module 100 in obtaining external light, the display module 100 is arranged on the outer surface of the vehicle. To ensure the original appearance of the vehicle, the polarizer, OCA (Optically Clear Adhesive) and cover plate and other film layers of the display module 100 can be removed and replaced with the outer layer 40 to avoid problems such as increased reflection rate of the display module 100 to external ambient light, damaged display effect in the display state, and affected integration effect in the shutdown state due to removal of film layers such as the polarizer. The specific color of the outer layer 40 can be selected by the user, as long as the transmittance of the outer layer 40 is greater than or equal to 10% to meet the light intake requirements of the display panel 10.

[0078] The exterior layer 40 may include a paint layer.

[0079] The materials of the paint layer can be composed of solvents, resins, pigments and additives.

[0080] Optionally, the thickness of the outer decoration layer 40 is greater than or equal to 250 μm and less than or equal to 400 μm. The thickness should not be too large, as it will affect the light transmittance, nor too small, as it may cause problems such as falling off and fading. For example, the thickness of the outer decoration layer 40 can be any one of 250 μm, 300 μm, 350 μm, and 400 μm.

[0081] In some optional embodiments, the display panel 10 further includes a light shielding layer disposed in the second opening K2 , and the photoelectric conversion unit 4 is at least partially reused as the light shielding layer.

[0082] It should be noted that since the transmittance of the display module 100 increases after the polarizer is removed, the reflection rate of the external ambient light increases, the display effect of the display state is damaged and the integration effect of the shutdown state is also affected. To solve the above problems, the embodiment of the present invention can reuse the photoelectric conversion unit 4 at least partially as a shading layer, that is, at least one layer in the photoelectric conversion unit 4 can be used as a shading layer. For example, the first electrode layer 41 can be made of metal to achieve a shading effect, reduce the transmittance of the display panel 10, and improve the display effect of the display panel 10 and the integration effect of the shutdown state.

[0083] The inventors have conducted simulation experiments and found that when the photoelectric conversion unit 4 is at least partially reused as a light shielding layer, the reflectivity of the display panel 10 can be effectively reduced. Compared with the case without a light shielding layer, the reflectivity of the display panel 10 can be reduced by more than 20%.

[0084] Optionally, the display module 100 further includes a pressure-sensitive adhesive layer 70 , a support layer 60 , and a buffer layer 50 , which are arranged on a side of the display panel 10 away from the outer decoration layer 40 and are stacked in a direction away from the display panel 10 .

[0085] Optionally, the display module 100 is a flexible display module, that is, the display panel 10 , the pressure-sensitive adhesive layer 70 , the support layer 60 , the buffer layer 50 and other film layer components of the display module 100 are all made of flexible materials.

[0086] See also Figure 6 and Figure 7 An embodiment of the present invention further provides a finishing assembly, including: a shell 20, the shell 20 having an outer surface; a display module 100, the display module 100 is arranged on the outer surface of the shell 20, and the display panel 10 is the display module 100 in any of the above embodiments.

[0087] The finishing assembly provided in the embodiment of the present invention includes a shell 20 and a display module 100. Since the display module 100 is provided with a photoelectric conversion unit 4, by setting the outer surface of the shell 20, it can also facilitate external light such as sunlight. The finishing assembly can be applied to vehicles and other equipment. For example, when applied to a vehicle, the shell 20 has an outer surface that can be understood as a surface outside the vehicle cockpit, such as the surface of the front body, etc. The photoelectric conversion unit 4 in the display module 100 can convert light energy into electrical energy for use by the vehicle, effectively improving energy collection and conversion, and achieving the effect of integrated light energy collection and conversion and endurance. The display module 100 can adjust the appearance of the vehicle by adjusting its own display screen to meet the different needs of users.

[0088] In order to achieve the connection and fixation between the display module 100 and the housing 20 , in some optional embodiments, the display module 100 and the housing 20 are bonded by an adhesive layer 30 .

[0089] During manufacturing, a layer of adhesive layer 30 may be coated on the position of the housing 20 where the display module 100 is to be disposed, and then the display module 100 is attached to the adhesive layer 30 .

[0090] Optionally, the material of the adhesive layer 30 includes water-based adhesive or optical adhesive. The water-based adhesive uses synthetic polymer as adhesive and water as dispersion medium, replacing toxic organic solvents that pollute the environment, and is an environmentally friendly adhesive. The optical adhesive can be solid OCA (Optically Clear Adhesive).

[0091] The water-based adhesive can use synthetic polymers as adhesives and water as a dispersion medium. Optionally, the materials of the water-based adhesive include polyurethane polymers and water, that is, the water-based adhesive includes polyurethane adhesive.

[0092] The viscosity of the water-based adhesive is greater than or equal to 2000 mPa.s and less than or equal to 13000 mPa.s, and / or the density of the water-based adhesive is greater than or equal to 1.02 g / ml and less than or equal to 1.12 g / ml, and / or the solid content of the water-based adhesive is greater than or equal to 45%. The synthetic polymer may be a polyurethane polymer.

[0093] Depending on the specific type of water-based adhesive, the viscosity range of the water-based adhesive is also different. For example, the viscosity of the water-based adhesive can be 2350-3100 mPa.s or 10000-13000 mPa.s.

[0094] Optionally, the material of the adhesive layer 30 includes polyurethane adhesive. Polyurethane adhesive is suitable for bonding various materials such as metal, plastic, rubber, polyester, etc. At the same time, it has excellent bonding effect on low surface energy materials. It meets the requirements of low odor and low VOC emission. It is suitable for machine dispensing and can also be mixed manually. It has good adhesion and strong adhesion. After curing, it has high toughness and elasticity, excellent peeling resistance, shearing resistance, and impact resistance, and has excellent environmental resistance, aging resistance, and chemical resistance.

[0095] An embodiment of the present invention further provides a vehicle, comprising the veneer assembly in any of the above embodiments.

[0096] In some optional embodiments, the vehicle also includes a photoelectric conversion external circuit and an energy storage unit electrically connected to the photoelectric conversion external circuit, and the photoelectric conversion external circuit is electrically connected to the energy transmission circuit 5 of the display panel 10; the photoelectric conversion external circuit includes a connected external transmission circuit and an electromagnetic compatibility protection circuit.

[0097] Optionally, the external transmission circuit includes a voltage stabilization unit and a filtering unit.

[0098] Optionally, the energy storage unit is electrically connected to at least the light-emitting unit of the display panel to drive the light-emitting unit using the electric energy in the energy storage unit. Of course, the energy storage unit can also be used to power and drive other components of the vehicle without special limitation.

[0099] The electric energy storage unit can store the electric energy generated by the photoelectric conversion unit 4 for use by the vehicle. The voltage stabilizing unit in the external transmission circuit can ensure stable potential for electric energy signal transmission, and the filtering unit ensures that there is no noise interference with the electric signal on the backlight surface of the display panel 10, improving the display, sensing, antenna, anti-peeping, directional sound and other functions. The electromagnetic compatibility protection circuit can prevent electromagnetic radiation from interfering with other devices and systems. The voltage stabilizing unit, the filtering unit, and the electromagnetic compatibility protection circuit can adopt the circuit design commonly used in the prior art without special limitations.

[0100] See also Figure 8 The embodiment of the present invention further provides a vehicle manufacturing method, comprising:

[0101] S110: providing a housing 20;

[0102] S120: forming a glue layer 30 on the outer surface of the housing 20;

[0103] S130 : attaching the display module 100 on the adhesive layer 30 , where the display module 100 is the display module 100 in any of the above embodiments.

[0104] The vehicle manufacturing method provided in the embodiment of the present invention forms an adhesive layer 30 on the outer surface of the housing 20 to achieve bonding and fixing of the display module 100 . The process is simple and easy to implement.

[0105] In step S110 , the housing 20 may be a metal housing, specifically a vehicle cabin frame.

[0106] In step S120 and step S130, a glue layer 30 can be formed on the outer surface of the shell 20 through a process of glue preparation, glue coating, drying and activation. Specifically, the step of forming the glue layer 30 on the outer surface of the shell 20 includes: preparing at least two glue materials to form the material of the glue layer 30; coating the material of the glue layer 30 on the outer surface of the shell 20; and drying and activating the material of the glue layer 30 to form the glue layer 30.

[0107] Optionally, the step of attaching the display module 100 to the adhesive layer 30 includes attaching the display module 100 to the adhesive layer 30 by a lamination process or a vacuum forming process. In the lamination process, the display module 100 may be pressed at a predetermined temperature and pressure to attach the display module 100 to the adhesive layer 30.

[0108] See also Fig. 9 Optionally, in the step of laminating the display module 100 and the adhesive layer 30 by the laminating process, the steps include: S210: pre-pressing the display module 100 and the adhesive layer 30; S220: activating the adhesive layer 30 at 60°C to 80°C for at least 1s to 5min; S230: cooling the adhesive layer 30 for at least 1s to 5min; S240: laminating the display module 100 and the adhesive layer 30 by pre-pressing and performing main pressing. The pre-pressing can be understood as placing the display module 100 on the adhesive layer 30, applying a certain pressure to position it, and the pressure applied during the main pressing is greater than the pre-pressing pressure, so that the display module 100 and the adhesive layer 30 are fixed and laminated.

[0109] Optionally, the adhesive layer 30 can be prepared by using a double adhesive or a combination of multiple adhesives. During the stirring stage of the preparation of the adhesive layer 30, the stirring speed needs to be controlled to avoid generating bubbles as much as possible, and the adhesive is degassed after being stirred evenly. The adhesive is sprayed onto the shell 20 and immediately attached to the display module 100. After that, the tightness of the connection between the display module 100 and the adhesive layer 30 can be improved through a pressing process. The adhesive layer 30, the shell and the display module 100 are placed in an environment of 60°C to 80°C, and the adhesive layer 30 is activated for 1 minute and cooled for 1 minute.

[0110] See also Fig.10Optionally, in the step of attaching the display module 100 to the adhesive layer 30 by the vacuum forming process, the process includes: S310: placing the display module 100 on the adhesive layer 30; S320: performing a vacuum forming process on the display module 100 for 5s to 3min to attach the display module 100 to the adhesive layer 30. For the curved surface or special-shaped part of the housing 20, the display module 100 can be adsorbed on the housing 20 in a manner similar to the vacuum forming process, and the forming process takes 1min.

[0111] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

[0112] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that: include: substrate; A light emitting unit, disposed on one side of the substrate; A photoelectric conversion unit, wherein the photoelectric conversion unit and the light-emitting unit are arranged in the same layer and are spaced apart from each other along a direction parallel to the plane where the substrate is located, and the photoelectric conversion unit is used to convert external light incident on the photoelectric conversion unit into electrical energy.

2. The display panel according to claim 1, characterized in that: Also included is a pixel definition layer disposed on one side of the substrate, the pixel definition layer comprising a first opening and a second opening disposed at intervals; The light emitting unit is disposed in the first opening, and the photoelectric conversion unit is disposed in the second opening; Preferably, the thickness of the display panel is greater than or equal to 38 μm and less than or equal to 40 μm; Preferably, the display panel further comprises a light shielding layer disposed in the second opening, and the photoelectric conversion unit is at least partially reused as the light shielding layer; Preferably, the display panel is a flexible display panel.

3. The display panel according to claim 2, characterized in that: The display panel further comprises an array layer disposed between the substrate and the pixel definition layer, the array layer comprising a pixel circuit and a power transmission circuit, the pixel circuit is electrically connected to the light emitting unit, and the power transmission circuit is electrically connected to the photoelectric conversion unit; Preferably, along a direction away from the plane where the substrate is located, the array layer includes at least two conductive layers stacked in layers, and the power transmission circuit and at least one of the conductive layers are arranged in the same layer; Preferably, the display panel further comprises an encapsulation layer, wherein at least a portion of the encapsulation layer is located on a side of the light emitting unit away from the substrate, and the encapsulation layer comprises a third opening, wherein the third opening is connected to the second opening to expose at least a portion of the photoelectric conversion unit; Preferably, the encapsulation layer comprises a first encapsulation layer, and the first encapsulation layer comprises an inorganic material; Preferably, the encapsulation layer comprises a second encapsulation layer provided on a side of the first encapsulation layer away from the substrate, and the second encapsulation layer comprises an organic material; Preferably, the encapsulation layer comprises a third encapsulation layer provided on a side of the second encapsulation layer away from the substrate, and the third encapsulation layer comprises an inorganic material; Preferably, the first encapsulation layer and the third encapsulation layer are made of the same material.

4. The display panel according to claim 3, characterized in that: In a direction away from the plane where the substrate is located, the photoelectric conversion unit includes a first electrode layer, a photoelectric conversion layer and a second electrode layer which are stacked; Preferably, the material of the photoelectric conversion layer includes at least one of single crystal silicon, polycrystalline silicon, amorphous silicon, and perovskite; Preferably, the power transmission circuit comprises a first signal line and a second signal line, the first signal line is electrically connected to the first electrode layer, and the second signal line is electrically connected to the second electrode layer; Preferably, the first electrode layer is one of the positive electrode and the negative electrode, and the second electrode layer is the other of the positive electrode and the negative electrode; Preferably, in a direction away from the plane where the substrate is located, the light-emitting unit includes a third electrode layer, a light-emitting functional layer and a fourth electrode layer which are stacked; The third electrode layer and the first electrode layer are arranged on the same layer, the fourth electrode layer and the second electrode layer are arranged on the same layer, the light-emitting functional layer and the photoelectric conversion layer are arranged on the same layer, and the light-emitting functional layer and the photoelectric conversion layer are made of different materials.

5. A display module, characterized in that: include: A display panel, wherein the display panel is the display panel according to any one of claims 1 to 4; The outer decoration layer is arranged on the light-emitting side of the display panel, and the light transmittance of the outer decoration layer is greater than or equal to 10%.

6. The display module according to claim 5, characterized in that: The thickness of the outer decoration layer is greater than or equal to 250 μm and less than or equal to 400 μm; Preferably, the exterior finishing layer comprises a paint layer; Preferably, the display module further comprises a pressure-sensitive adhesive layer, a support layer and a buffer layer which are arranged on a side of the display panel away from the outer decoration layer and are stacked in a direction away from the display panel; Preferably, the display module is a flexible display module.

7. A facing assembly, characterized in that: include: a housing having an outer surface; A display module, wherein the display module is arranged on the outer surface of the shell, and the display module is the display module according to any one of claims 5 to 6.

8. The facing assembly according to claim 7, characterized in that: The display module and the housing are bonded together by an adhesive layer; Preferably, the material of the adhesive layer includes water-based adhesive or optical adhesive; Preferably, the viscosity of the water-based adhesive is greater than or equal to 2000 mPa.s and less than or equal to 13000 mPa.s, and / or the density of the water-based adhesive is greater than or equal to 1.02 g / ml and less than or equal to 1.12 g / ml, and / or the solid content of the water-based adhesive is greater than or equal to 45%; Preferably, the materials of the water-based adhesive include polyurethane polymer and water.

9. A vehicle, characterized in that: It comprises a facing assembly, wherein the facing assembly is the facing assembly as described in any one of claims 7 to 8.

10. The vehicle according to claim 9, characterized in that The vehicle further includes a photoelectric conversion external circuit and an electric energy storage unit electrically connected to the photoelectric conversion external circuit, wherein the photoelectric conversion external circuit is electrically connected to an electric energy transmission circuit of a display panel in the veneer assembly; The photoelectric conversion external circuit includes a connected external transmission circuit and an electromagnetic compatibility protection circuit; Preferably, the external transmission circuit includes a voltage stabilizing unit and a filtering unit; Preferably, the electric energy storage unit is electrically connected to at least a light emitting unit of the display panel.

11. A method for manufacturing a facing assembly, characterized in that: include: providing a housing; forming a glue layer on the outer surface of the shell; A display module is attached to the adhesive layer, and the display module is the display panel according to any one of claims 5 to 6.

12. The method for manufacturing a facing assembly according to claim 11, characterized in that: The step of forming a glue layer on the outer surface of the shell includes: Mixing at least two adhesive materials to form the adhesive layer; Applying the material of the adhesive layer to the outer surface of the shell; The material of the glue layer is dried and activated to form the glue layer.

13. The method for manufacturing a facing assembly according to claim 11, characterized in that: The step of attaching the display module to the adhesive layer includes: Bonding the display module and the adhesive layer by a lamination process or a vacuum forming process; Preferably, the step of laminating the display module and the adhesive layer by a laminating process includes: pre-pressing the display module and the adhesive layer; activating the adhesive layer at 60° C. to 80° C. for at least 1 second to 5 minutes; cooling the adhesive layer for at least 1 second to 5 minutes; laminating the display module and the adhesive layer by pre-pressing and laminating; Preferably, the step of laminating the display module and the adhesive layer by the vacuum forming process includes: Placing the display module on the adhesive layer; The display module is subjected to a vacuum forming treatment for 5 seconds to 3 minutes to make the display module and the adhesive layer adhere to each other.

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