Display module and display device

Abstract

The invention provides a display module and a display device. The display module comprises a substrate, a pixel defining layer and a dielectric layer, and a plurality of light emitting units are arranged on the pixel defining layer in an array; the first deflection part is arranged in the dielectric layer, the orthographic projection of the first deflection part on the substrate covers the orthographic projection of the light-emitting unit on the substrate, and the refractive index of the first deflection part is larger than that of the dielectric layer; the junction area of the first deflection part and the dielectric layer is an arc-shaped curved surface; the first deflection part extends in the first direction, the curvature of the section in the second direction is gradually increased, and light emitted by the light emitting unit is deflected towards the second direction after passing through the first deflection part and is emitted in parallel; by introducing the first deflection part, the light and thin design of the display module is facilitated, the consistency and directionality of the light emitting direction are improved, the display effect is optimized, and the visual experience is improved.

Description

Technical Field

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

[0002] The floating display technology is a display method that suspends the displayed image in the air to achieve the naked eye 3D visual effect. At present, the display module with the floating display function usually relies on the optical waveguide to adjust the polarization angle of its outgoing light, so it is required that there is an inclination angle between the optical waveguide and the light-emitting side of the display panel in the display module. However, the inclined optical waveguide will increase the volume of the display module, which is not conducive to its lightweight design, thereby affecting the flexibility of the display module application. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a display module and a display device to solve all or part of the technical problems described above.

[0004] Based on the above purpose, the first aspect provided by the present application provides a display module, comprising a stacked base substrate, a pixel defining layer and a dielectric layer, wherein a plurality of light-emitting units are arranged in an array on the pixel defining layer;

[0005] A first deflection portion is disposed in the dielectric layer; an orthographic projection of the first deflection portion on the base substrate covers an orthographic projection of the light-emitting unit on the base substrate, and a refractive index of the first deflection portion is greater than a refractive index of the dielectric layer;

[0006] The boundary area between the first deflection portion and the dielectric layer is an arc-shaped surface; the first deflection portion is extended in the first direction, and the curvature of the cross section in the second direction increases successively, and the light emitted by the light-emitting unit is deflected toward the second direction after passing through the first deflection portion and emitted in parallel;

[0007] The first direction is perpendicular to the second direction.

[0008] Based on the same inventive concept, the second aspect of the present application further provides a display device, comprising the display module as described in the first aspect.

[0009] From the above description, it can be seen that the display module and display device provided by the present application, by introducing a first deflection portion with a refractive index greater than that of the dielectric layer, can form an arc-shaped surface with a refractive effect in the boundary area between the two, so that the light is deflected after being emitted through the first deflection portion, which helps to achieve a lightweight and compact design of the display module; at the same time, the first deflection portion in the dielectric layer extends in the first direction, and the curvature of the cross section in the second direction increases successively, which can ensure that the light can be deflected toward the second direction after passing through the first deflection portion and be directed to be emitted in a parallel manner, which is beneficial to enhancing the consistency and concentration of the light emission direction, thereby optimizing the display effect and improving the user's visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 is a schematic diagram of the first display module in Example 1;

[0012] Figure 2 is a schematic diagram of the second display module in Example 2;

[0013] Figure 3 This is a schematic diagram of light after passing through a linear Fresnel lens;

[0014] Figure 4 is a schematic diagram of the third display module in Example 3;

[0015] Figure 5 This is a schematic diagram of the structure of the first display module in this application;

[0016] Figure 6 This is a schematic diagram of the structure of the second display module in this application;

[0017] Figure 7 This is a schematic diagram of the structure of the third display module in this application;

[0018] Figure 8 It is a schematic structural diagram of a first deflection portion and a second deflection portion in the present application;

[0019] Fig. 9 It is a schematic structural diagram of a first deflection portion and at least two second deflection portions in the present application;

[0020] Fig.10 It is a schematic diagram of the arrangement of the first deflection portion in this application;

[0021] Fig.11 This is a light path diagram of the display module in this application.

[0022] Description of reference numerals:

[0023] 11. first panel; 12. optical waveguide; 13. first imaging area;

[0024] 21. second panel; 22. linear Fresnel lens; 23. second imaging area;

[0025] 31. a third panel; 32. an optical film; 33. a third imaging area;

[0026] 100. substrate;

[0027] 200, pixel definition layer; 201, light emitting unit;

[0028] 300, encapsulation layer;

[0029] 400, dielectric layer;

[0030] 500, a first deflection portion;

[0031] 600, second deflection portion;

[0032] 700, polarization layer;

[0033] 800, color film layer; 801, color film unit; 802, light shielding unit;

[0034] 900. Protective layer. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0038] Taking a display module with a floating display function as an example, currently, such display modules usually use an optical waveguide 12 to adjust the direction and polarization state of the emitted light. The optical waveguide 12 is a special optical element that can guide the light to propagate along a specific path while maintaining the light intensity, and emit it from the display module at a preset angle; in Example 1, Figure 1 As shown, the display module may be composed of a first panel 11 and an optical waveguide 12. To ensure that the output light of the display module forms a clear and stable image in the first imaging area 13, the optical waveguide 12 needs to be installed on the light output side of the display panel at a specified tilt angle (for example, a tilt angle of 45°) so as to present a complete display image in the first imaging area 13.

[0039] However, since the first panel 11 and the optical waveguide 12 are arranged at an angle, the overall thickness of the display module increases, so it is difficult for the display module provided in Example 1 to achieve a thin and compact design. As consumers' requirements for the portability and sophistication of electronic devices continue to increase, the display module provided in Example 1 is difficult to meet consumers' application needs, so it is difficult to improve the user experience, thereby affecting the adaptability and flexibility of the display module.

[0040] In order to overcome the above-mentioned technical problems, some technical solutions have been proposed to solve the technical problems of large display module size and poor flexibility. For example, in Example 2, Figure 2 As shown, the display module may include a second panel 21 and a linear Fresnel lens 22 located on the light emitting side of the second panel 21. The second panel 21 provides a display light source. Since the linear Fresnel lens 22 has a refractive effect on light, the light is significantly deflected after being emitted through the linear Fresnel lens 22, so that the corresponding display image is presented in the second imaging area 23 in the space.

[0041] However, the display module provided in Example 2 still has obvious defects, such as Figure 3As shown, when the second panel 21 is an OLED (Organic Light-Emitting Diode) display panel, its backlight source is composed of multiple point light sources, so the outgoing light of the second panel 21 is a non-parallel light. Specifically, when the light passes through the linear Fresnel lens 22, since the incident angles of different light rays on the light-entering side of the linear Fresnel lens 22 are quite different, the outgoing angle of the light after being refracted by the linear Fresnel lens 22 becomes larger, so the dispersion degree of the outgoing light is relatively large, that is, the degree of light deflection is relatively significant; since the light emitted through the linear Fresnel lens 22 is relatively dispersed, the clarity of the display image presented by the display module in the second imaging area 23 is reduced, and obvious distortion will also occur.

[0042] For example, in Example 3, Figure 4 As shown, some display modules can adopt splicing screen technology. This type of display module includes multiple third panels 31 and multiple optical films 32. All third panels 31 are evenly arranged at the same inclination angle, and the inclination angle of all optical films 32 is the same as the inclination angle of the third panel 31, so that each optical film 32 is parallel to the corresponding third panel 31. During the display process, the outgoing light of multiple third panels 31 passes through the corresponding optical film 32 and reaches the third imaging area 33 in the space, and can be spliced ​​in the third imaging area 33 to form a complete display image.

[0043] Similarly, the display module provided in Example 3 also has obvious defects; first, the structure of the display module is relatively complex, resulting in relatively high preparation accuracy and installation accuracy between the optical films 32 and 32; second, the display module is formed by splicing multiple third panels 31, and obvious splicing seams are easily formed between adjacent third panels 31, making it difficult to present a display image with a high degree of completeness in the third imaging area 33.

[0044] In view of this, the first aspect of the present application provides a display module, combined with Figure 5-Figure 11 The display content provides a detailed description of the display module.

[0045] A display module comprises a stacked base substrate 100, a pixel defining layer 200, a dielectric layer 400 and a first deflection portion 500; the pixel defining layer 200 is arrayed with a plurality of light-emitting units 201, and the first deflection portion 500 is arranged in the dielectric layer 400; the orthographic projection of the first deflection portion 500 on the base substrate 100 covers the orthographic projection of the light-emitting unit 201 on the base substrate 100, and the refractive index of the first deflection portion 500 is greater than the refractive index of the dielectric layer 400; the boundary area between the first deflection portion 500 and the dielectric layer 400 is an arc-shaped surface; the first deflection portion 500 is extended in a first direction, and the curvature of the cross section in a second direction increases successively, and the light emitted by the light-emitting unit 201 is deflected toward the second direction after passing through the first deflection portion 500 and emitted in parallel; wherein the first direction is perpendicular to the second direction.

[0046] For the base substrate 100, as Figure 5-Figure 7 , Fig.10 and Fig.11 As shown, the base substrate 100 can be used as a carrier of the display module to support and effectively protect the film structure such as the pixel defining layer 200, the dielectric layer 400 and the first deflecting portion 500.

[0047] By way of example, the base substrate 100 may be formed of materials such as polyimide, optical quartz, and nano-ceramics.

[0048] For the pixel definition layer 200, Figure 5-Figure 7 , Fig.10 and Fig.11 As shown, the pixel defining layer 200 is arranged on one side of the base substrate 100; specifically, the pixel defining layer 200 array has a plurality of pixel openings, and each light-emitting unit 201 is correspondingly arranged in a pixel opening, so that the plurality of light-emitting units 201 are distributed in the pixel defining layer 200 array, and an effective barrier is formed for adjacent light-emitting units 201, thereby reducing the degree of crosstalk between the two, so that the plurality of light-emitting units 201 emit light toward a side away from the base substrate 100.

[0049] More specifically, the plurality of light emitting units 201 are used as the main light source of the display module to ensure that the display module displays the corresponding display image.

[0050] Exemplarily, the plurality of light emitting units 201 may include at least one of a red light emitting unit 201 , a green light emitting unit 201 , a blue light emitting unit 201 and a white light emitting unit 201 , which will not be described in detail herein.

[0051] For example, the pixel defining layer 200 may be formed of an organic insulating material such as polyimide, polyphthalimide, polyphthalamide, acrylic resin, benzocyclobutene or phenolic resin.

[0052] For the dielectric layer 400, if Figure 5-Figure 7, Fig.10 and Fig.11 As shown, the dielectric layer 400 is disposed on a side of the pixel defining layer 200 away from the base substrate 100 , and can be used to planarize the surface of the pixel defining layer 200 , and can also cover and protect electrical components such as the light emitting unit 201 .

[0053] For the first deflecting portion 500, Figure 5-Figure 11 As shown, specifically, the first deflection portion 500 is arranged in the dielectric layer 400, and the orthographic projection of the first deflection portion 500 on the base substrate 100 covers the orthographic projection of the light-emitting unit 201 on the base substrate 100, and can fully cover the corresponding light-emitting unit 201, so that the light emitted by the light-emitting unit 201 is emitted through the first deflection portion 500; more specifically, since the refractive index of the first deflection portion 500 and the dielectric layer 400 is different, the junction area of ​​the first deflection portion 500 and the dielectric layer 400 can form a first refractive surface, when the light passing through the first deflection portion 500 reaches the first refractive surface after the first deflection portion 500, it can be refracted at the first refractive surface; since the refractive index of the first deflection portion 500 is greater than the refractive index of the dielectric layer 400, when the light is emitted from the first refractive surface, its incident angle is greater than the exit angle, so that the exiting light is significantly deflected toward one side of the display module.

[0054] Furthermore, if Figure 5-Figure 11 As shown, the boundary area between the first deflection portion 500 and the dielectric layer 400 is an arc-shaped surface, that is, the first refractive surface is an arc-shaped surface convex toward the direction away from the base substrate 100; further, the first deflection portion 500 is extended in the first direction so that the first deflection portion 500 is in the shape of a long strip and can cover multiple light-emitting units 201 in the first direction; since the first refractive surface is an arc-shaped surface, the cross-section of the first deflection portion 500 in the second direction is an arc-shaped, and by increasing the curvature of the cross-section of the first deflection portion 500 in the second direction, the curvature of the first refractive surface in the second direction can be increased in turn. When the light is emitted from the first refractive surface, most of the light emitted from the first refractive surface is deflected toward the second direction, and the degree of deflection of the light gradually decreases in the second direction, so the deviation between the emitted light rays is relatively small, ensuring that the emission direction of the light of the display module has a high consistency and makes the light more concentrated; since the design of the display module deflects the emitted light toward the second direction and propagates directionally in the same direction, it helps to enhance the clarity of the displayed image.

[0055] Since the introduced first deflection portion 500 is located inside the dielectric layer 400 , the overall thickness of the display module will not be increased while the display effect and imaging clarity of the display module are improved, which helps the display module to achieve a lightweight, thin and compact design.

[0056] Furthermore, since the refractive index of the first deflection portion 500 is greater than the refractive index of the dielectric layer 400, the first deflection portion 500 is a light-dense medium and the dielectric layer 400 is a light-sparse medium; when the light passing through the first dielectric layer 400 is irradiated on the first refractive surface, the incident angle of part of the light is greater than the critical angle of the first refractive surface. At this time, the part of the light will be totally reflected on the surface of the first refractive surface and will not be emitted from the first refractive surface. Therefore, the light with a large incident angle in the first deflection portion 500 and difficult to be emitted in parallel with other light can be filtered, thereby ensuring that the display module has a good imaging effect.

[0057] It should be noted that the first direction and the second direction defined in the present application are perpendicular to each other. The first deflection portion 500 is extended in the first direction, and the curvature of its cross section increases successively in the second direction. Therefore, the first direction can be regarded as the X direction and the second direction as the Y direction, which will not be repeated here.

[0058] In some embodiments, a plurality of first deflecting portions 500 are provided, and the plurality of first deflecting portions 500 are arranged in parallel in the second direction.

[0059] For the first deflecting portion 500, Fig.10 As shown, the display module has a plurality of light-emitting units 201 distributed in an array. Therefore, in order to make the light emitted by all the light-emitting units 201 deflected toward the second direction and emitted toward the same direction, in addition to extending the first deflection portion 500 in the first direction, a plurality of first deflection portions 500 can also be arranged in the dielectric layer 400, so that the plurality of first deflection portions 500 are arranged in parallel in the second direction, ensuring that the light generated by all the light-emitting units 201 in the display module is deflected toward the second direction after passing through the first deflection portion 500, and then emitted in parallel toward the same direction, thereby improving the consistency of the light emission direction, so that the display module presents a good quality display image in the corresponding imaging area.

[0060] Furthermore, the plurality of first deflecting portions 500 are distributed at intervals in the second direction, so that the interference between light emitted from different first deflecting portions 500 can be reduced, thereby ensuring the consistency of the light emission direction.

[0061] Furthermore, the plurality of first deflecting portions 500 are closely distributed in the second direction, so that it can be applicable to a display module in which the light-emitting units 201 are densely distributed, ensuring that all light is emitted through the first deflecting portions 500 .

[0062] In some embodiments, the display module also includes a second deflection portion 600, which is disposed in the first deflection portion 500, and the orthographic projection of the second deflection portion 600 on the base substrate 100 is located within the orthographic projection of the first deflection portion 500 on the base substrate 100, and covers the orthographic projection of the light-emitting unit 201 on the base substrate 100.

[0063] For display modules, such as Figure 6-Figure 7 , Fig.10 as well as Fig.11 As shown, a second deflection portion 600 having a different refractive index is also provided in the first deflection portion 500, so that a second refractive surface having a refractive effect is formed in the boundary area between the second deflection portion 600 and the first deflection portion 500, so that the light emitted from the second deflection portion 600 is deflected; specifically, the orthographic projection of the second deflection portion 600 on the base substrate 100 is located within the orthographic projection of the first deflection portion 500 on the base substrate 100, and the second deflection portion 600 covers the orthographic projection of the light-emitting unit 201 on the base substrate 100. Since the second deflection portion 600 is located in the first deflection portion 500, the light emitted by the light-emitting unit 201 first enters the second deflection portion 600, and the light reaching the second refractive surface through the second deflection portion 600 is refracted and then enters the first deflection portion 500, so as to cause the light to be deflected twice through the first refractive surface at the top of the first deflection portion 500, so that the outgoing light of the display module is emitted in parallel in the same direction, so as to improve the imaging effect of the display module.

[0064] Furthermore, the display module provided in the present application directly utilizes the first deflection portion 500 and / or the second deflection portion 600 therein to cause directionally refracted outgoing light, thereby achieving the purpose of suspended display. Therefore, compared with Example 1, Example 2 and Example 3, the light-emitting side of the display module does not need to be equipped with additional structures such as an optical waveguide 12, a linear Fresnel lens 22 or an optical film 32 for deflecting the outgoing light, which is beneficial to reducing the complexity of the display module and reducing the cost investment of the display module.

[0065] In some embodiments, the refractive index of the second deflecting portion 600 is less than the refractive index of the first deflecting portion 500 .

[0066] For the second deflecting portion 600, Figure 6-Figure 11 As shown, the second deflection portion 600 is located inside the first deflection portion 500, and the refractive index of the second deflection portion 600 is smaller than the refractive index of the first deflection portion 500. At this time, the second deflection portion 600 is equivalent to an optically sparse medium, and the first deflection portion 500 is equivalent to an optically dense medium. Specifically, when the light enters the first deflection portion 500 from the second deflection portion 600, the light is refracted at the second refractive surface, and its exit angle in the first deflection portion 500 is smaller than its incident angle in the second deflection portion 600. In this way, the degree of deflection of the light in the first deflection portion 500 is adjusted, so that it is shifted to a certain extent toward the second direction. By introducing the second deflection portion 600 with a refractive index smaller than that of the first deflection portion 500, the incident angle of the light passing through the first refractive surface can be adjusted to ensure that the light has a consistent exit direction after being emitted from the first refractive surface, and is emitted at a larger deflection angle, thereby ensuring that the exiting light of the display module can present a high-quality image effect in a specified area in space.

[0067] Exemplarily, when the outgoing light of the display module is 45°, the display module can present the best display image in the vertical direction, which will not be elaborated here.

[0068] In some embodiments, the boundary region between the second deflecting portion 600 and the first deflecting portion 500 is an arc-shaped surface, and the curvature of the cross section of the second deflecting portion 600 in the second direction decreases successively.

[0069] For the second deflecting portion 600, Figure 6-Figure 11 As shown, the boundary area between the second deflection portion 600 and the first deflection portion 500 can form a second refractive surface, which can cause the light passing through the second refractive surface to be offset toward the second direction, so as to increase the degree of deflection of the output light of the display module; specifically, by setting the boundary area between the second deflection portion 600 and the first deflection portion 500 as an arc-shaped surface, that is, the second refractive surface is an arc-shaped surface, since the refractive index of the second deflection portion 600 is smaller than the refractive index of the first deflection portion 500, when the light passes through the second refractive surface, its incident angle is greater than its refractive angle. At this time, the light emitted by the second deflection portion 600 can be gathered to reduce the degree of discreteness of the light, thereby improving the light output intensity of the display module.

[0070] More specifically, the curvature of the cross-section of the second deflection portion 600 in the second direction decreases successively. In other words, in the second direction, the changing trend of the curvature of the cross-section of the second deflection portion 600 is opposite to the changing trend of the curvature of the cross-section of the first deflection portion 500, so that the curvature of the second deflection portion 600 in the second direction gradually decreases; at this time, when the light is emitted from the light-emitting unit 201 and passes through the second refractive surface which is an arc-shaped surface, as the deflection degree of the light in the second direction gradually decreases, the second refractive surface can reduce the angle difference between the outgoing light rays, so that the light emitted through the second refractive surface propagates in the same direction as much as possible, thereby ensuring that the outgoing light beam of the light-emitting unit 201 is more concentrated and directional.

[0071] In some embodiments, at least one second deflection portion 600 is disposed in the first deflection portion 500, and the at least one second deflection portion 600 extends in the first direction; when at least two second deflection portions 600 are disposed in the first deflection portion 500, at least two second deflection portions 600 are arranged in parallel in the second direction.

[0072] For display modules, such as Figure 5-Figure 11As shown, the first deflection portion 500 is located in the dielectric layer 400, and the second deflection portion 600 is located in the first deflection portion 500, so that the boundary area between the dielectric layer 400 and the first deflection portion 500 forms a first refractive surface, and the boundary area between the second deflection portion 600 and the first deflection portion 500 forms a second deflection portion 600; specifically, when the light enters the first deflection portion 500 through the second refractive surface, the second refractive surface initially gathers the light and uses its refractive effect to deflect the light toward the second direction; then, the light enters the first deflection portion 500 and reaches the first refractive surface, and is deflected by Since the refractive index of the dielectric layer 400 is smaller than that of the first deflection portion 500, light rays with an incident angle smaller than the critical angle of the first refractive surface will be refracted at the first refractive surface, so that they will be deflected toward the second direction after entering the dielectric layer 400 and propagate in parallel in the same direction; and light rays with an incident angle exceeding the critical angle will be totally reflected on the surface of the first refractive surface and propagate in the direction of the substrate 100. In this way, light rays with an incident angle that is too large and difficult to control are filtered out by the first refractive surface, thereby improving the consistency of the light emission direction so that the light rays are emitted in the same direction.

[0073] In some embodiments, the refractive index of the first deflection portion 500 is 1.6-1.8; wherein, the refractive index of the first deflection portion 500 can be any value between 1.6-1.8; specifically, since materials with this refractive index are relatively common, more choices can be provided for users, which is conducive to controlling the production cost of the first deflection portion 500.

[0074] In some embodiments, the refractive index of the dielectric layer 400 and / or the second deflection portion 600 is 1.4-1.6; wherein, the refractive index of the dielectric layer 400 and the second deflection portion 600 can be any value between 1.6-1.8; similarly, since materials with this refractive index are more common, more choices can be provided to users, which is conducive to controlling the manufacturing cost of the dielectric layer 400 and the second deflection portion 600.

[0075] Exemplarily, when the refractive index of the first deflection portion 500 is 1.8 and the refractive indexes of the dielectric layer 400 and the second deflection portion 600 are both 1.5, the first deflection portion 500 is a light-dense medium, and the dielectric layer 400 and the second deflection portion 600 are light-sparse medium; when the light is emitted from the second refractive surface, its exit angle is smaller than the incident angle, so it can have a gathering and guiding effect on the light; when the light is emitted through the first refractive surface, its exit angle is greater than the incident angle, and it can cause total reflection at a critical angle greater than the second refractive surface, so as to ensure that the light is deflected toward the second direction and propagates in the same direction.

[0076] It should be noted that, since the refractive index of the dielectric layer 400 and / or the second deflection portion 600 is 1.4-1.6, and the refractive index of the dielectric layer 400 and the refractive index of the second deflection portion 600 are both smaller than the refractive index of the first deflection portion 500, the dielectric layer 400 and the second deflection portion 600 can be formed of materials with the same refractive index or materials with different refractive indices, which will not be elaborated here.

[0077] In some embodiments, a deflection layer is disposed on a side of the dielectric layer 400 away from the base substrate 100 .

[0078] For the polarization layer 700, as Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, the polarization layer 700 is arranged on the side of the dielectric layer 400 away from the base substrate 100. When the light propagates in the dielectric layer 400 and reaches the polarizer, the polarization layer 700 is used to filter the light and adjust the emission direction of the light, which is beneficial to enhance the clarity and contrast of the displayed image.

[0079] As some alternative embodiments, a color filter layer 800 is provided on the side of the dielectric layer 400 away from the base substrate 100 , and the color filter layer 800 includes a plurality of color filter units 801 of different colors arranged in an array, and a shading unit 802 is provided between two adjacent color filter units 801 of different colors.

[0080] For the color filter layer 800, Figure 7 As shown, the color filter layer 800 is arranged on a side of the dielectric layer 400 away from the base substrate 100. Specifically, the color filter layer 800 may include a plurality of color filter units 801 of different colors, and the plurality of color filter units 801 are distributed in an array to ensure that the light-emitting units 201 of the same color correspond to each other, thereby filtering and screening the light emitted by the corresponding light-emitting units 201 and forming a color image; more specifically, a shading unit 802 (such as a black matrix) may be arranged between two adjacent color filter layers 800 of different colors. When the light emitted by two adjacent light-emitting units 201 is of different colors, the shading layer can be used to absorb the stray light between the two color filter units 801 of different colors, thereby reducing the degree of crosstalk between light of different colors, thereby improving the color contrast of the display module.

[0081] Furthermore, the color filter layer 800 and the light shielding layer in the color filter layer 800 form a COE (Color Filter on Encapsulation) structure, which can improve the color contrast of the display module and help reduce the display power consumption of the display module.

[0082] In some embodiments, the display module also includes an encapsulation layer 300 and a protective layer 900; wherein the encapsulation layer 300 is located between the pixel defining layer 200 and the dielectric layer 400, and the orthographic projection of the encapsulation layer 300 on the base substrate 100 covers the orthographic projection of the pixel defining layer 200 on the base substrate 100; the protective layer 900 is arranged on the side of the dielectric layer 400 away from the base substrate 100, and a polarization layer 700 or a color filter layer 800 is arranged between the protective layer 900 and the dielectric layer 400.

[0083] For the encapsulation layer 300, Figure 5-Figure 7 , Fig.10 and Fig.11 As shown, the encapsulation layer 300 is located between the pixel defining layer 200 and the dielectric layer 400, and the orthographic projection of the pixel defining layer 200 on the base substrate 100 covers the orthographic projection of the pixel defining layer 200 on the base substrate 100, so as to fully cover and planarize the pixel defining layer 200 and the light-emitting units 201 distributed on the pixel defining layer 200, thereby effectively protecting the light-emitting units 201, and also providing a good environment for the preparation of subsequent film layers.

[0084] For example, the encapsulation layer 300 may be made of inorganic materials with high density such as silicon oxynitride, silicon oxide or silicon nitride, or may be formed of a polymer material containing a desiccant or a polymer material that blocks water vapor.

[0085] For the protective layer 900, Figure 5-Figure 7 , Fig.10 and Fig.11 As shown, the protective layer 900 is arranged on the side of the dielectric layer 400 away from the base substrate 100, and a polarizing layer 700 or a color film layer 800 is arranged between the protective layer 900 and the dielectric layer 400. By applying the protective layer 900 in the display module, the light-emitting side of the display module can be effectively protected to prevent bumps or scratches from affecting the display effect of the display module.

[0086] Exemplarily, the protection layer 900 may be formed of materials such as glass or acrylic, which will not be described in detail here.

[0087] In some embodiments, the application scenario of the display module includes at least one of floating display and non-front light display.

[0088] Furthermore, the floating display is to use optical technology to establish virtual display images in different states (dynamic, static or interactive) in space, so that users can watch and interact without the help of a screen; and when the image is suspended in the air, the user's visual experience can be enhanced. Furthermore, since the display module in the present application can directional deflect the outgoing light and form an image in a specified area in space, it is suitable for floating display.

[0089] Exemplarily, the suspended display can be any one of augmented reality (AR), virtual reality (VR), holographic projection and virtual interaction. Therefore, the display module is applied to display devices with suspended display function (such as AR devices, VR devices, holographic display devices and intelligent interactive devices), which will not be repeated here.

[0090] Furthermore, non-frontal light display refers to a display method in which light is projected from the display module in a non-frontal direction onto a specific surface of an object (such as a windshield, a car window, etc.), and a display image is formed by reflection or refraction; since non-frontal scenes are usually used to project information into the user's field of vision, it reduces the visual shift and improves the efficiency and safety of use. Furthermore, since the display module in the present application can directional deflect the emitted light and project it onto a specific surface of an object, it is suitable for non-frontal light display.

[0091] For example, non-frontal light display may include any one of vehicle-mounted HUD (Head Up Display), aviation cockpit display, transparent medium projection display (AR glasses and transparent screen) and non-transparent medium projection display (smart home display, advertising display, industrial and medical display, etc.). For example, when the non-frontal light is a vehicle-mounted HUD, the vehicle-mounted display module can project navigation, vehicle speed, warning and other information onto the windshield, so that the user can view it without lowering his head, thereby improving driving safety and convenience.

[0092] Based on the same inventive concept, the second aspect of the present application provides a display device; specifically, the display device includes a display module as described in any embodiment of the first aspect, and therefore, the display device has all the beneficial effects and related advantages of the above-mentioned display module; more specifically, the display device can be a display screen, a self-service platform, a vehicle-mounted display, and other devices with display functions, which will not be repeated here.

[0093] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0094] The various embodiments in the present application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0095] The description of the present application is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present application to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present application, and to enable those of ordinary skill in the art to understand the present application and thus design various embodiments with various modifications suitable for specific purposes.

[0096] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0097] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0098] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: It comprises a stacked substrate, a pixel defining layer and a dielectric layer, wherein a plurality of light-emitting units are arranged in an array on the pixel defining layer; A first deflecting portion, disposed in the dielectric layer; The orthographic projection of the first deflecting portion on the base substrate covers the orthographic projection of the light emitting unit on the base substrate, and the refractive index of the first deflecting portion is greater than the refractive index of the dielectric layer; The boundary area between the first deflection portion and the dielectric layer is an arc-shaped surface; the first deflection portion is extended in the first direction, and the curvature of the cross section in the second direction increases successively, and the light emitted by the light-emitting unit is deflected toward the second direction after passing through the first deflection portion and emitted in parallel; The first direction is perpendicular to the second direction.

2. The display module according to claim 1, characterized in that: A plurality of the first deflecting portions are provided, and the plurality of the first deflecting portions are arranged in parallel in the second direction.

3. The display module according to claim 1, characterized in that: Also includes: a second deflecting portion, disposed inside the first deflecting portion; The orthographic projection of the second deflecting portion on the base substrate is located within the orthographic projection of the first deflecting portion on the base substrate, and covers the orthographic projection of the light emitting unit on the base substrate.

4. The display module according to claim 3, characterized in that: The refractive index of the second deflecting portion is smaller than the refractive index of the first deflecting portion.

5. The display module according to claim 4, characterized in that: A boundary area between the second deflecting portion and the first deflecting portion is an arc-shaped surface, and the curvature of the cross section of the second deflecting portion in the second direction decreases successively.

6. The display module according to any one of claims 3 to 5, characterized in that: At least one second deflecting portion is disposed in the first deflecting portion, and at least one second deflecting portion extends in the first direction; When at least two first deflecting portions are provided in the first deflecting portion, at least two second deflecting portions are arranged in parallel in the second direction.

7. The display module according to claim 3, characterized in that: The refractive index of the first deflecting portion is 1.6-1.8; The refractive index of the dielectric layer and / or the second deflecting portion is 1.4-1.

6.

8. The display module according to claim 1, characterized in that: A deflection layer is disposed on a side of the dielectric layer away from the substrate; or A color filter layer is arranged on one side of the dielectric layer away from the base substrate. The color filter layer includes a plurality of color filter units of different colors arranged in an array. A light shielding unit is arranged between two adjacent color filter units of different colors.

9. The display module according to claim 1, characterized in that: The application scenario of the display module includes at least one of floating display and non-front light display.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

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