Display module, display device and vehicle

Abstract

The invention discloses a display module, a display device and a vehicle. The display module comprises a substrate, a first electrode, a light-emitting layer and a decoration layer. The first electrode is located on one side of the substrate, the light-emitting layer is located on the side, away from the substrate, of the first electrode and comprises a light-emitting structure, at least part of the light-emitting structure covers the first electrode, and the first electrode is used for driving the contact part of the light-emitting structure and the first electrode to emit light so as to achieve the display function of the display module. The decoration layer is located on the side, away from the substrate, of the light-emitting layer and comprises a first sub-part and a first opening defined by the first sub-part, and texture patterns are arranged on the first sub-part to decorate the display module. The light emitted by the light-emitting structure can be emitted from the first opening, so that the transmittance of the display module is improved. The orthographic projection of the first opening on the substrate falls in the orthographic projection of the first electrode on the substrate, and the light-emitting area is larger than the area of the first opening, so that the problem that the pixel area is reduced due to fitting errors is solved, and the pixel aperture ratio is increased.

Description

Technical Field

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

[0002] With the development of Internet technology and electronic technology, the smart interior of future car cockpits will provide drivers with more autonomy. Companies in the industry have also begun to focus on smart materials and smart surface technology. The car screen has become a decorative surface with a sense of design, combining decoration and functionality. Display or control functions will only be presented on the car screen through backlight or display activation when needed.

[0003] The topic of integrating digital functions into automotive interior materials has attracted more and more attention. In the existing technology, the light-transmitting surface material is integrated into the vehicle screen, integrating lighting, sensing, touch and other functions into one to create a smart surface. The pixel opening rate of the vehicle screen in the existing technology is low. Summary of the invention

[0004] The embodiments of the present application provide a display module, a display device and a vehicle, aiming to improve the pixel aperture ratio of the display module.

[0005] An embodiment of the first aspect of the present application provides a display module, which includes a substrate; a first electrode, located on one side of the substrate; a light-emitting layer, located on the side of the first electrode away from the substrate, the light-emitting layer including a light-emitting unit and a light-emitting structure, and the light-emitting unit covers the first electrode; a decorative layer, located on the side of the light-emitting layer away from the substrate, the decorative layer including a first sub-portion and a first opening enclosed by the first sub-portion; wherein the orthographic projection of the first opening on the substrate falls within the orthographic projection of the first electrode on the substrate.

[0006] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrode includes a plurality of electrodes, the first electrode peripheral side includes a first boundary along the thickness direction of the display module, and the minimum distance between two adjacent first boundaries is a, a=6μm-8μm.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the display module further includes a second electrode, and the second electrode is located on a side of the light-emitting structure facing away from the substrate.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrode is one of the anode and the cathode, and the second electrode is the other of the anode and the cathode.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the light-emitting layer includes a light-emitting unit, and the light-emitting unit includes a first electrode, a second electrode and a light-emitting structure.

[0010] According to an implementation of the first aspect of the present application, it also includes a pixel definition layer, which is located on the side of the first electrode facing away from the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, and at least part of the first electrode is exposed by the pixel opening.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the first opening on the substrate falls within the orthographic projection of the bottom of the pixel opening on the substrate.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, at least part of the light emitting unit is located at the pixel opening. According to any of the aforementioned embodiments of the first aspect of the present application, the peripheral side of the light emitting structure includes a second boundary along the thickness direction, and the minimum distance between the second boundary and the first boundary is p, p=3μm-4μm.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the peripheral side of the bottom of the pixel opening includes a third boundary along the thickness direction, and the minimum distance from the third boundary to the first boundary is n, where n=2μm-4μm.

[0014] According to any of the aforementioned implementations of the first aspect of the present application, the minimum distance between the third boundaries of the bottoms of two adjacent pixel openings is m, where m=2n+a.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, m=10 μm-16 μm.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the periphery of the first opening includes a fourth boundary along the thickness direction of the display module, and the minimum distance from the fourth boundary to the second boundary is q, q=10μm-15μm.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the minimum width of the first opening is 20 μm-30 μm.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the display module further includes a first encapsulation layer, a second encapsulation layer and a third encapsulation layer which are sequentially arranged on the side of the light-emitting layer away from the substrate.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the first encapsulation layer and the third encapsulation layer are inorganic encapsulation layers.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the second encapsulation layer is an organic encapsulation layer.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the third encapsulation layer is in direct contact with the decoration layer.

[0022] An embodiment of a second aspect of the present application provides a display device, comprising a display module according to any of the above embodiments.

[0023] An embodiment of the third aspect of the present application provides a vehicle, comprising a display device according to any of the above-mentioned embodiments.

[0024] In the display module provided in the embodiment of the present application, the display module includes a substrate, a first electrode, a light-emitting layer and a decorative layer. The first electrode is located on one side of the substrate, the light-emitting layer is located on the side of the first electrode away from the substrate, the light-emitting layer includes a light-emitting unit and a light-emitting structure, the light-emitting unit covers the first electrode, and the first electrode is used to drive the light-emitting unit to emit light so as to realize the display function of the display module. The decorative layer is located on the side of the light-emitting layer away from the substrate, the decorative layer includes a first sub-section and a first opening formed by the first sub-section, and the first sub-section has a texture pattern to decorate the display module, while reducing the reflectivity of the display module, so as to realize the integration of the display module with the environment. The light emitted by the light-emitting unit can be emitted from the first opening, thereby improving the transmittance of the display module. Among them, the orthographic projection of the first opening on the substrate falls within the orthographic projection of the first electrode on the substrate. When the decorative layer is attached, since the light-emitting area is larger than the area of ​​the first opening, even if the attachment is offset, the first opening can be given enough space for variation, thereby improving the problem of pixel area reduction due to attachment error and improving the pixel aperture ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0026] Figure 1 is a top view schematic diagram of a display module provided in an embodiment of the present application;

[0027] Figure 2 yes Figure 1 One of the cross-sectional views at the middle BB;

[0028] Figure 3 yes Figure 1 The second cross-sectional view at the middle BB;

[0029] Figure 4 It is a schematic diagram of the structure of a pixel when the decorative layer provided in the embodiment of the present application is accurately attached to the position;

[0030] Figure 5 is a schematic diagram of the structure of a pixel when the lamination position of the decoration layer provided in an embodiment of the present application is offset;

[0031] Figure 6 yes Figure 1 The third section view at the middle BB;

[0032] Figure 7 It is a schematic diagram of the structure of a pixel provided in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 10. Display module;

[0035] 100. Substrate;

[0036] 200, a first electrode; 210, a second electrode;

[0037] 300, pixel definition layer; 310, pixel definition portion; 320, pixel opening;

[0038] 400, decorative layer; 410, first sub-section; 420, first opening;

[0039] 500, light-emitting layer; 510, light-emitting structure; 520, light-emitting unit;

[0040] 610, first encapsulation layer; 620, second encapsulation layer; 630, third encapsulation layer;

[0041] M, first boundary; N, second boundary; I, third boundary; L, fourth boundary. DETAILED DESCRIPTION

[0042] 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.

[0043] 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 existence of other identical elements in the process, method, article or device including the elements.

[0044] 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.

[0045] The interior surfaces of vehicles are gradually becoming decorative surfaces with a sense of design. The interior surfaces combine decoration and functionality. Display or control functions are presented only when needed through backlight or display activation. In the prior art, a transparent surface material is usually attached to the vehicle display module to achieve integration with the environment. However, since the polarizer and the surface material are not fully transparent film materials, the transmittance of the display module is low, resulting in too low brightness of the display module.

[0046] If the removal of the polarizer will increase the reflectivity of the display module, a black matrix is ​​usually made on the encapsulation layer in the prior art to reduce the reflectivity of the display module, which will increase the process steps and production costs. At the same time, due to the low fitting accuracy between the epidermis material and the display module, the fitting accuracy between the epidermis and the display module is low. In order to ensure the display performance of the epidermis opening area, the spacing of the pixel openings needs to be increased, resulting in too low a pixel opening rate and poor display effect.

[0047] In order to solve the above problems, the embodiments of the present application provide a display module, a display device and a vehicle. The embodiments of the display module and the display device will be described below in conjunction with the accompanying drawings.

[0048] An embodiment of the present application provides a display module, which may be an organic light emitting diode (OLED) display module.

[0049] See also Figure 1 to Figure 2 , Figure 1 is a schematic top view of a display module 10 provided according to an embodiment of the present application. Figure 2 yes Figure 1 One of the cross-sectional views at the middle BB, Figure 3 yes Figure 1 The second cross-sectional view at the middle BB.

[0050] like Figure 1 and Figure 2As shown, the display module 10 provided by the embodiment of the first aspect of the present application includes a substrate 100, a first electrode 200, a light-emitting layer 500 and a decorative layer 400. The first electrode 200 is located on one side of the substrate 100, the light-emitting layer 500 is located on the side of the first electrode 200 away from the substrate 100, and the light-emitting layer 500 includes a light-emitting structure 510, at least part of which covers the first electrode 200. The decorative layer 400 is located on the side of the light-emitting layer 500 away from the substrate 100, and the decorative layer 400 includes a first sub-portion 410 and a first opening 420 formed by the first sub-portion 410. The orthographic projection of the first opening 420 on the substrate 100 falls within the orthographic projection of the first electrode 200 on the substrate 100.

[0051] In the display module 10 provided in the embodiment of the present application, the display module 10 includes a substrate 100, a first electrode 200, a light-emitting layer 500 and a decorative layer 400. The first electrode 200 is located on one side of the substrate 100, the light-emitting layer 500 is located on the side of the first electrode 200 away from the substrate 100, the light-emitting layer 500 includes a light-emitting structure 510, at least part of the light-emitting structure 510 covers the first electrode 200, and the first electrode 200 is used to drive the light-emitting structure 510 to emit light in contact with the first electrode 200, thereby realizing the display function of the display module 10. The decorative layer 400 is located on the side of the light-emitting layer 500 away from the substrate 100, and the decorative layer 400 includes a first sub-portion 410 and a first opening 420 formed by the first sub-portion 410. Since the display module 10 is not provided with a polarizer, the reflectivity of the display module 10 is relatively large, and the ambient light will be reflected to the user through the display module 10, generating glare that affects the user's visual experience. The first sub-section 410 has a texture pattern to decorate the display module 10, while reducing the reflectivity of the display module 10, improving the visual effect, and realizing the integration of the display module 10 with the environment, without increasing the process steps, saving production costs, and speeding up the production cycle. The light emitted by the light-emitting structure 510 can be emitted from the first opening 420, thereby improving the transmittance of the display module 10. Among them, the orthographic projection of the first opening 420 on the substrate 100 falls within the orthographic projection of the first electrode 200 on the substrate 100. When the decorative layer 400 is bonded, since the light-emitting area is larger than the area of ​​the first opening 420, even if the bonding is offset, the first opening 420 can be given enough space for variation, thereby improving the problem of pixel area reduction due to bonding errors and improving the pixel opening ratio. Optionally, such as Figure 2As shown, the pixel definition layer 300 may not be provided. First, the first electrode 200 is provided on one side of the substrate 100, and then the light-emitting layer 500 is directly deposited on the first electrode 200. The light-emitting area of ​​the pixel is limited by the first opening 420, which can increase the pixel aperture ratio and improve the lifespan. In the display module 10 provided in the embodiment of the present application, by removing the pixel definition layer, the first opening 420 formed by the first sub-section 410 is used to define the light-emitting area, which can further increase the light-emitting area and lifespan. Compared with the conventional design scheme, the distance between the first boundary M and the second boundary N is reduced by about 4.5μm-9.5μm, the contact area between the first electrode 200 of the display module 10 and the light-emitting unit 520 is increased, the light-emitting area is increased, and the lifespan of the display module 10 is improved. Compared with the conventional scheme of making a light-shielding black matrix on the encapsulation layer, the pixel aperture ratio is increased by more than 10.97%, and the pixel aperture ratio is increased by 33.86% compared with the conventional scheme of setting a polarizer on the encapsulation layer, thereby improving the screen brightness and lifespan.

[0052] Optionally, the first electrode 200 includes a first boundary M extending along the thickness direction of the display module 10, and the minimum distance between the first boundaries M of two adjacent first electrodes 200 is a, a=6μm-8μm. The minimum distance between two adjacent first boundaries M can be 6μm, 6.5μm, 7μm, 7.5μm or 8μm. The first electrode 200 is expanded to improve the problem of short circuit caused by the small distance between the two adjacent first electrodes 200, and the problem of too small area of ​​the first electrode 200 caused by the large distance between the two adjacent first electrodes 200, resulting in a smaller light-emitting area and a lower pixel aperture ratio, can also be improved.

[0053] Optionally, the light emitting structure 510 includes a second boundary N along the thickness direction, and the minimum distance between the first boundary M and the second boundary N is p, where p=3μm-4μm. The light emitting structure 510 includes a second boundary N along the thickness direction, which is also the mask boundary, and the minimum distance between the first boundary M and the second boundary N can be 3μm, 3.25μm, 3.5μm, 3.75μm and 4μm. The possibility of short circuit between two adjacent first electrodes 200 due to the minimum distance between the first boundary M and the second boundary N being too small can be improved, and the problem of too small contact area with the light emitting unit 520 due to the minimum distance between the first boundary M and the second boundary N being too large, resulting in a smaller light emitting area and a lower pixel aperture ratio, can also be improved.

[0054] Optionally, the display module 10 further includes a second electrode 210 , and the second electrode 210 is located on a side of the light emitting structure 510 away from the substrate 100 .

[0055] Optionally, the first electrode 200 is one of an anode and a cathode, and the second electrode 210 is the other of the anode and the cathode. For ease of understanding, the present embodiment is described with the first electrode 200 being an anode and the second electrode 210 being a cathode.

[0056] Optionally, the material of the first electrode 200 is generally a material with a high work function to improve the hole injection efficiency, and may be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO, Indium Tin Oxide), zinc tin oxide (IZO) or a transparent conductive polymer (such as polyaniline), etc. For example, the first electrode 200 may be made of an ITO-Ag-ITO composite material, without special limitation.

[0057] Optionally, the material of the second electrode 210 can be one of the metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), or an alloy of the aforementioned metal materials, such as magnesium-silver alloy (Mg / Ag) and lithium-aluminum alloy (Li / Al), which is not limited in this embodiment.

[0058] Preferably, the light-emitting layer 500 includes a light-emitting unit 520 , and the light-emitting unit 520 includes a first electrode 200 , a second electrode 210 and a light-emitting structure 510 , and the boundary of the light-emitting unit 520 is the boundary of the mask.

[0059] In some optional embodiments, such as Figure 3 As shown, the display module 10 also includes a pixel definition layer 300, which is located on the side of the first electrode 200 away from the substrate 100, and the pixel definition layer 300 includes a pixel defining portion 310 and a pixel opening 320 formed by the pixel defining portion 310, at least a portion of the light-emitting structure 510 is located in the pixel opening 320, and at least a portion of the first electrode 200 is exposed by the pixel opening 320.

[0060] In these optional embodiments, a pixel definition layer 300 may be disposed on the side of the first electrode 200 facing away from the substrate 100, and the pixel opening 320 is used to dispose the light-emitting unit 520. Optionally, at least part of the light-emitting unit 520 is located in the pixel opening 320, thereby improving the problem of light crosstalk between light-emitting units 520 of different colors and realizing the light-emitting function of the display module 10. Optionally, as Figure 4 and Figure 5 As shown, Figure 4 This is a schematic diagram of the structure of a pixel when the decoration layer 400 is accurately attached to the position. Figure 5The schematic diagram of the structure of the pixel when the lamination position of the decoration layer 400 is offset. Since the orthographic projection of the first opening 420 on the substrate 100 falls within the orthographic projection of the bottom of the pixel opening 320 on the substrate 100, the bottom area of ​​the pixel opening 320 is larger than the area of ​​the first opening 420. Even if the lamination of the decoration layer 400 is offset, a sufficiently large area of ​​the pixel opening 320 is exposed from the first opening 420, and a sufficient range of variation space is provided for the first opening 420, thereby improving the problem of the area reduction of the bottom of the pixel opening 320 due to the lamination error and improving the pixel aperture ratio.

[0061] In some optional embodiments, such as Figure 6 and Figure 7 As shown, the first electrode 200 includes a plurality of first electrodes 200 , and the periphery of the first electrode 200 includes a first boundary M extending along the thickness direction of the display module 10 , and the minimum distance between the first boundaries M of two adjacent first electrodes 200 is a, where a=6 μm-8 μm.

[0062] In these optional embodiments, the minimum distance between two adjacent first boundaries M can be 6μm, 6.5μm, 7μm, 7.5μm or 8μm, and the first electrode 200 is expanded outward to improve the problem of short circuit caused by the small distance between two adjacent first electrodes 200. It can also improve the problem of too small area of ​​the first electrode 200 caused by the large distance between two adjacent first electrodes 200, resulting in a smaller light-emitting area and a lower pixel opening rate.

[0063] In some optional embodiments, the peripheral side of the light emitting structure 510 includes a second boundary N along the thickness direction, and the minimum distance between the first boundary M and the second boundary N is p, where p=3 μm-4 μm.

[0064] In these optional embodiments, the minimum distance between the first boundary M and the second boundary N can be 3μm, 3.25μm, 3.5μm, 3.75μm and 4μm. The possibility of short circuit between two adjacent first electrodes 200 caused by the minimum distance between the first boundary M and the second boundary N being too small can be improved. At the same time, the problem of too small contact area with the light-emitting unit 520 caused by the minimum distance between the first boundary M and the second boundary N being too large, resulting in a smaller light-emitting area and a lower pixel aperture ratio, can also be improved. Compared with the conventional design, the distance between the first boundary M and the second boundary N is reduced by about 4.5μm-9.5μm, the contact area between the first electrode 200 of the display module 10 and the light-emitting unit 520 is increased, the light-emitting area is increased, and the life of the display module 10 is improved.

[0065] In some optional embodiments, the peripheral side of the bottom of the pixel opening 320 includes a third boundary I along the thickness direction, and the minimum distance from the third boundary I to the first boundary M is n, where n=2 μm-4 μm.

[0066] In these optional embodiments, the minimum distance from the third boundary I to the first boundary M is n, that is, the distance from one side of the first electrode 200 to the bottom of the pixel opening 320, wherein n=2μm-4μm, and n can be 2μm, 2.5μm, 3μm, 3.5μm, 4μm. Since at least part of the light-emitting unit 520 is exposed from the pixel opening 320, the pixel opening 320 is enlarged, and the distance from one side of the first electrode 200 to the bottom of the pixel opening 320 is reduced, the contact area between the first electrode 200 and the light-emitting unit 520 can be increased, thereby improving the problem that the minimum distance from the third boundary I to the first boundary M is too large, resulting in too small a contact area between the first electrode 200 and the bottom of the pixel opening 320, thereby resulting in too small a pixel opening ratio. At the same time, it can also improve the problem that the minimum distance from the third boundary I to the first boundary M is too small, and then the problem of adjacent pixel color mixing and difficulty in the manufacturing process caused by the pixel opening 320 being too large is also improved.

[0067] Optionally, the minimum distance between the third boundaries I at the bottom of two adjacent pixel openings 320 is m, m=2n+a. The minimum distance between the third boundaries I at the bottom of two adjacent pixel openings 320 is the sum of twice the distance of one side of the first electrode 200 extending out of the bottom of the pixel opening 320 and the distance between the two adjacent first electrodes 200.

[0068] Optionally, m=10μm-16μm, where m can be 10μm, 12μm, 13μm, 14μm and 16μm, which can improve the problem of low pixel opening ratio due to the small area at the bottom of the pixel opening 320, and can also improve the problem of adjacent pixel color mixing and difficulty in the preparation process caused by the large area at the bottom of the pixel opening 320.

[0069] In some optional embodiments, the first opening 420 includes a fourth boundary L along the thickness direction of the display module 10 around the first opening 420 , and the minimum distance from the fourth boundary L to the second boundary N is 10 μm-15 μm.

[0070] In these optional embodiments, the minimum distance from the fourth boundary L to the second boundary N can be 10μm, 11μm, 12μm, 13μm, 15μm. The distance from the third boundary I to the second boundary N is n+p, which is 4.5μm-7.5μm, that is, the positive projection of the first opening 420 on the substrate 100 falls within the pixel opening 320. The problem that the range of the variable space reserved for the first opening 420 is too small due to the minimum distance from the fourth boundary L to the second boundary N is too small, and the area of ​​the pixel opening 320 is reduced due to the fitting error can be improved. The problem that the area of ​​the first sub-section 410 is too small due to the minimum distance from the fourth boundary L to the second boundary N is too large, the reflectivity of the display module 10 is increased, and the visibility of the display module 10 is affected can also be improved.

[0071] In the embodiment provided in the present application, even if the decorative layer 400 deviates from the maximum limit, the pixel opening 320 area of ​​the present application solution can still be comparable to that of the conventional solution. The aperture ratio of the present application solution is increased by 33.86% compared with the conventional solution, providing the decorative layer 400 with sufficient variation space range, reducing the impact of the fitting tolerance of the decorative layer 400 on the display area, and at the same time improving the life of the display module 10.

[0072] Optionally, the first sub-portion 410 is made of black material, which can reduce the reflectivity of the display module 10 .

[0073] In some optional embodiments, the minimum width of the first opening 420 is 20 μm-30 μm.

[0074] In these optional embodiments, the minimum width of the first opening 420 may be 20 μm, 23 μm, 25 μm, 27 μm, or 30 μm. The minimum width of the first opening 420 determines the area of ​​the first opening 420, which can improve the problem of reduced transmittance of the display module 10 due to the small area of ​​the first opening 420, thereby reducing the brightness of the display module 10. It can also improve the problem of increased reflectivity of the display module 10 due to the large area of ​​the first opening 420, which affects the visibility of the display module 10.

[0075] In some optional embodiments, such as Figure 3 As shown, the display module 10 further includes a first encapsulation layer 610 , a second encapsulation layer 620 and a third encapsulation layer 630 which are sequentially arranged on the side of the light emitting layer 500 away from the substrate 100 .

[0076] In these optional embodiments, the first encapsulation layer 610 , the second encapsulation layer 620 , and the third encapsulation layer 630 can encapsulate the display module 10 to prevent water and oxygen from invading and ensure the effectiveness of the encapsulation.

[0077] Optionally, the first encapsulation layer 610 is an inorganic encapsulation layer, and the inorganic encapsulation layer can be prepared by chemical vapor deposition, which can improve the compactness of the first encapsulation layer 610 and thus improve the encapsulation effect of the encapsulation layer 600 .

[0078] Optionally, the display module 10 further includes a second encapsulation layer 620 located on the side of the first encapsulation layer 610 away from the substrate 100, and the material of the second encapsulation layer 620 includes an organic material. That is, the second encapsulation layer 620 is an organic encapsulation layer, and the organic encapsulation layer can be prepared by inkjet printing, so that the encapsulation layer 600 has a suitable thickness.

[0079] Optionally, the display module 10 may further include a third encapsulation layer 630 located on the side of the second encapsulation layer 620 away from the substrate 100, and the material of the third encapsulation layer 630 includes an inorganic material. That is, the third encapsulation layer 630 is also an inorganic encapsulation layer, and further adding an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer 600.

[0080] Optionally, the material of the first encapsulation layer 610 is the same as the material of the third encapsulation layer 630 , so that the first encapsulation layer 610 and the third encapsulation layer 630 can be prepared using the same equipment, which can simplify the preparation process of the display module 10 .

[0081] Optionally, the third encapsulation layer 630 is in direct contact with the decoration layer 400 , that is, in the embodiment of the present application, a first opening 420 is provided on the decoration layer 400 , so that a polarizer may not be provided to increase the transmittance of the display module 10 and improve the display brightness.

[0082] An embodiment of a second aspect of the present application provides a display device, comprising a display module 10 according to any one of the above embodiments.

[0083] In the display device provided in the embodiment of the present application, the display device includes a display module 10, and the display module 10 includes a substrate 100, a first electrode 200, a light-emitting layer 500 and a decorative layer 400. The first electrode 200 is located on one side of the substrate 100, the light-emitting layer 500 is located on the side of the first electrode 200 away from the substrate 100, the light-emitting layer 500 includes a light-emitting structure 510, at least part of the light-emitting structure 510 covers the first electrode 200, and the first electrode 200 is used to drive the light-emitting structure 510 to emit light in contact with the first electrode 200, thereby realizing the display function of the display module 10. The decorative layer 400 is located on the side of the light-emitting layer 500 away from the substrate 100, and the decorative layer 400 includes a first sub-portion 410 and a first opening 420 formed by the first sub-portion 410. Since the display module 10 is not provided with a polarizer, the reflectivity of the display module 10 is relatively large, and the ambient light will be reflected to the user through the display module 10, generating glare that affects the user's visual experience. The first sub-section 410 has a texture pattern to decorate the display module 10, while reducing the reflectivity of the display module 10, improving the visual effect and achieving the integration of the display module 10 with the environment, without increasing the process, saving production costs and speeding up the production cycle. The light emitted by the light-emitting structure 510 can be emitted from the first opening 420, thereby improving the transmittance of the display module 10. Among them, the orthographic projection of the first opening 420 on the substrate 100 falls within the orthographic projection of the first electrode 200 on the substrate 100. When the decorative layer 400 is bonded, since the light-emitting area is larger than the area of ​​the first opening 420, even if the bonding is offset, the first opening 420 can be given enough space for variation, thereby improving the problem of pixel area reduction due to bonding errors and improving the pixel aperture ratio.

[0084] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0085] An embodiment of the third aspect of the present application provides a vehicle, comprising a display device according to any of the above-mentioned embodiments.

[0086] In the vehicle provided in the embodiment of the present application, the vehicle includes a display device, and the display module 10 includes a substrate 100, a first electrode 200, a light-emitting layer 500, and a decorative layer 400. The first electrode 200 is located on one side of the substrate 100, the light-emitting layer 500 is located on the side of the first electrode 200 away from the substrate 100, the light-emitting layer 500 includes a light-emitting structure 510, at least part of the light-emitting structure 510 covers the first electrode 200, and the first electrode 200 is used to drive the light-emitting structure 510 to emit light in the part in contact with the first electrode 200, thereby realizing the display function of the display module 10. The decorative layer 400 is located on the side of the light-emitting layer 500 away from the substrate 100, and the decorative layer 400 includes a first sub-portion 410 and a first opening 420 formed by the first sub-portion 410. The first sub-portion 410 has a texture pattern to decorate the display module 10, and at the same time reduce the reflectivity of the display module 10, so as to realize the integration of the display module 10 with the environment. The light emitted by the light emitting structure 510 can be emitted from the first opening 420, thereby improving the transmittance of the display module 10. The orthographic projection of the first opening 420 on the substrate 100 falls within the orthographic projection of the first electrode 200 on the substrate 100. When the decorative layer 400 is attached, since the light emitting area is larger than the area of ​​the first opening 420, even if the attachment is offset, the first opening 420 can be given enough space for variation, thereby improving the problem of pixel area reduction due to attachment error and improving the pixel aperture ratio.

[0087] The above is only a specific implementation 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.

Claims

1. A display module, characterized in that: The display module comprises: substrate; A first electrode, located on one side of the substrate; a light-emitting layer, located on a side of the first electrode away from the substrate, the light-emitting layer comprising a light-emitting structure, at least a portion of the light-emitting structure covering the first electrode; A decoration layer, located on a side of the light-emitting layer away from the substrate, the decoration layer comprising a first sub-portion and a first opening formed by the first sub-portion; The orthographic projection of the first opening on the substrate falls within the orthographic projection of the first electrode on the substrate.

2. The display module according to claim 1, characterized in that: There are multiple first electrodes, and the peripheral side of the first electrode includes a first boundary extending along the thickness direction of the display module, and the minimum distance between two adjacent first boundaries is a, where a=6 μm-8 μm; Preferably, the display module further comprises a second electrode, and the second electrode is located on a side of the light emitting structure away from the substrate; Preferably, the first electrode is one of an anode or a cathode, and the second electrode is the other of an anode or a cathode; Preferably, the light-emitting layer includes a light-emitting unit, and the light-emitting unit includes the first electrode, the second electrode and the light-emitting structure.

3. The display module according to claim 2, characterized in that: It also includes a pixel definition layer, the pixel definition layer is located on a side of the first electrode away from the substrate, the pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion, at least part of the light emitting structure is located in the pixel opening, and at least part of the first electrode is exposed from the pixel opening; Preferably, the orthographic projection of the first opening on the substrate falls within the orthographic projection of the bottom of the pixel opening on the substrate; Preferably, at least part of the light emitting units are located in the pixel opening.

4. The display module according to claim 2, characterized in that: The peripheral side of the light emitting structure includes a second boundary along the thickness direction, and the minimum distance between the second boundary and the first boundary is p, where p=3 μm-4 μm.

5. The display module according to claim 2, characterized in that: The bottom periphery of the pixel opening includes a third boundary along the thickness direction, and the minimum distance from the third boundary to the first boundary is n, where n=2 μm-4 μm; Preferably, the minimum distance between the third boundaries of the bottoms of two adjacent pixel openings is m, where m=2n+a; Preferably, m=10 μm-16 μm.

6. The display module according to claim 4, characterized in that: The first opening peripheral side includes a fourth boundary along the thickness direction of the display module, and the minimum distance from the fourth boundary to the second boundary is q, q=10 μm-15 μm.

7. The display module according to claim 1, characterized in that: The minimum width of the first opening is 20 μm-30 μm.

8. The display module according to claim 1, characterized in that: The display module further includes a first encapsulation layer, a second encapsulation layer and a third encapsulation layer which are sequentially arranged on a side of the light-emitting layer away from the substrate; Preferably, the first encapsulation layer and the third encapsulation layer are inorganic encapsulation layers; Preferably, the second encapsulation layer is an organic encapsulation layer; Preferably, the third encapsulation layer is in direct contact with the decoration layer.

9. A display device, characterized in that: A display module comprising any one of claims 1-8.

10. A vehicle, characterized in that: A display device comprising the display device according to claim 9.

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