Display module, preparation method thereof and display device

Abstract

The invention relates to a display module and a preparation method thereof and a display device.The display module comprises a display panel and a first adjusting layer, the display panel comprises a substrate and a light-emitting layer, the light-emitting layer is arranged on one side of the substrate in the thickness direction of the light-emitting layer, and the light-emitting layer comprises a plurality of light-emitting units; the first adjusting layer is arranged on the light emitting side of the display panel, the first adjusting layer is provided with a plurality of dimming areas, and the dimming areas are located on the sides, away from the substrate, of the light emitting units; wherein each dimming area is provided with a plurality of adjusting particles, each adjusting particle is embedded in the first adjusting layer, and the refractive index of the adjusting particles is larger than that of the first adjusting layer. According to the scheme, on the basis that the light extraction efficiency is improved to improve the display brightness, integral forming of the display module is facilitated, and the process forming difficulty and cost are reduced.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display module, a preparation method thereof, and a display device. Background Art

[0002] With the continuous development of display technologies, it is necessary to continuously improve the light extraction efficiency of display devices, so as to increase the display brightness at the front view angle and improve the visual experience of users.

[0003] The existing micro-lens technology solution is to pattern a low-refractive-index material after the encapsulation of a display panel, and then cover a high-refractive-index material by means of inkjet printing or coating. By using the total reflection principle of light, the light extraction efficiency at small angles is enhanced, and the overall display brightness is improved.

[0004] However, in the above solution, an additional mask plate needs to be added for patterning etching during the forming process, which increases the process steps, improves the process forming difficulty, has a production capacity bottleneck, and increases the equipment cost. Summary of the Invention

[0005] Embodiments of the present invention provide a display module, a preparation method thereof, and a display device, which can improve the light extraction efficiency to improve the display brightness, and are beneficial to the overall forming of the display module, reducing the process forming difficulty and cost.

[0006] In a first aspect, according to an embodiment of the present invention, a display module is proposed, which includes a display panel and a first adjustment layer. The display panel includes a substrate and a light-emitting layer, the light-emitting layer is disposed on one side of the substrate in its own thickness direction, and the light-emitting layer includes a plurality of light-emitting units; the first adjustment layer is disposed on the light-emitting side of the display panel, the first adjustment layer has a plurality of dimming areas, and the dimming areas are located on the side of the light-emitting units facing away from the substrate; wherein, each dimming area is provided with a plurality of adjustment particles, each adjustment particle is embedded in the first adjustment layer, and the refractive index of the adjustment particle is greater than the refractive index of the first adjustment layer.

[0007] According to an aspect of an embodiment of the present invention, one end of the adjustment particle in the thickness direction is located on the side of the first adjustment layer close to the display panel, and the other end is at least located on the side of the first adjustment layer facing away from the display panel, and the adjustment particle penetrates through the first adjustment layer in the thickness direction.

[0008] According to an aspect of an embodiment of the present invention, the end of the adjustment particle facing away from the display panel in the thickness direction protrudes from the surface of the side of the first adjustment layer facing away from the display panel, and the height dimension of the adjustment particle in the thickness direction is greater than the height dimension of the first adjustment layer;

[0009] Preferably, the refractive index of the adjustment particle includes 1.6 - 1.7, and the refractive index of the first adjustment layer includes 1.4 - 1.5.

[0010] According to one aspect of an embodiment of the present invention, one end of the adjusting particle facing away from the display panel in the thickness direction is flush with the surface of the first adjusting layer facing away from the display panel.

[0011] According to one aspect of an embodiment of the present invention, one end of the adjusting particle facing away from the display panel in the thickness direction has an end face opening, and the end face opening is located on the surface of the first adjusting layer facing away from the display panel;

[0012] Preferably, the orthographic projection of the adjusting particle on the substrate is located within the orthographic projection of the end face opening on the substrate.

[0013] According to one aspect of an embodiment of the present invention, it further includes a second adjusting layer. The second adjusting layer has a light-adjusting opening, and the light-adjusting opening is correspondingly arranged with the light-emitting unit in the thickness direction. Part of the first adjusting layer is arranged in the light-adjusting opening. The second adjusting layer surrounds the light-adjusting area, and the refractive index of the first adjusting layer is greater than the refractive index of the second adjusting layer;

[0014] Preferably, the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the light-adjusting opening on the substrate;

[0015] Preferably, the surface of the light-adjusting opening close to the light-adjusting area is an inclined surface gradually extending away from the light-adjusting area.

[0016] According to one aspect of an embodiment of the present invention, a plurality of light-emitting units include a first light-emitting unit and a second light-emitting unit. The concentration of the adjusting particles in the light-adjusting area corresponding to the first light-emitting unit is greater than the concentration of the adjusting particles in the light-adjusting area corresponding to the second light-emitting unit;

[0017] Preferably, the size of the adjusting particles in the light-adjusting area corresponding to the first light-emitting unit is smaller than the size of the adjusting particles in the light-adjusting area corresponding to the second light-emitting unit;

[0018] Preferably, the cross-section of the adjusting particle in the thickness direction includes a circle, an ellipse, and / or a polygon;

[0019] Preferably, the adjusting particle includes metal particles.

[0020] In a second aspect, a method for manufacturing a display module according to an embodiment of the present invention includes:

[0021] Providing a first adjusting layer and dividing the first adjusting layer into a plurality of light-adjusting areas;

[0022] Respectively arranging a plurality of spaced-apart adjusting particles in each light-adjusting area, and the refractive index of the adjusting particles is greater than the refractive index of the first adjusting layer;

[0023] Provided is a display panel. The display panel includes a substrate and a light-emitting layer. The light-emitting layer includes a plurality of light-emitting units. A first adjustment layer is connected to the light-emitting side of the display panel, and a plurality of light-dimming areas are respectively located on one side of the plurality of light-emitting units facing away from the substrate.

[0024] Preferably, before connecting the first adjustment layer to the light-emitting side of the display panel, it further includes:

[0025] A packaging layer is formed on one side of the light-emitting layer away from the substrate, and the first adjustment layer is formed on one side of the packaging layer away from the light-emitting side.

[0026] In a third aspect, according to an embodiment of the present invention, a display device is provided, including the display module described in any one of the above.

[0027] An embodiment of the present invention provides a display module, a preparation method thereof, and a display device. By providing a first adjustment layer on the display panel and providing a plurality of light-dimming areas therein, the light output of the corresponding light-emitting units on the display panel is adjusted by the light-dimming areas. The refractive index of the adjustment particles in the light-dimming areas is greater than the refractive index of the first adjustment layer. Due to the difference in refractive indices between the two, based on the principle of total internal reflection of light, the light at a large viewing angle can be concentrated and emitted at the normal viewing angle, thereby improving the light extraction efficiency and effectively improving the display brightness. At the same time, on this basis, the light adjustment component, as a separate component, can be directly provided on the light-emitting side of the display panel, avoiding the additional use of a mask for etching, reducing the molding process steps, reducing the process difficulty, saving the equipment cost, and having better economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the drawings.

[0029] Figure 1 is a schematic structural diagram of a display module according to an embodiment of the present invention;

[0030] Figure 2 is Figure 1 a partial enlarged schematic view of A in

[0031] Figure 3 is Figure 1 another partial enlarged schematic view of A in

[0032] Figure 4 is Figure 1 yet another partial enlarged schematic view of A in

[0033] Figure 5 is Figure 1 yet another partial enlarged schematic view of A in

[0034] Figure 6 isFigure 1 Another partial enlarged schematic view at position A in the figure;

[0035] Figure 7 It is a flowchart for preparing a display module according to an embodiment of the present invention;

[0036] Figure 8 It is a structural diagram of the preparation process of the display module according to an embodiment of the present invention.

[0037] Reference numerals:

[0038] 100 - display module; 10 - display panel; 11 - substrate; 12 - light-emitting layer; 13 - light-emitting unit; Z - thickness direction;

[0039] 21 - first adjustment layer; 22 - second adjustment layer; M - dimming area; 24 - adjustment particles; 25 - dimming opening; 26 - end face opening.

[0040] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. Detailed embodiments

[0041] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present invention; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0042] The orientation terms appearing in the following description are all the directions shown in the figures, and do not limit the specific structures of the display module and its manufacturing method and display device of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0043] For a better understanding of the present invention, the following is combined with Figures 1 to 8 A detailed description is given of the display module and its manufacturing method and display device according to an embodiment of the present invention.

[0044] Please refer toFigure 1 and Figure 2 According to an embodiment of the present invention, a display module 100 is provided, which includes a display panel 10 and a first adjustment layer 21. The display panel 10 includes a substrate 11 and a light-emitting layer 12. The light-emitting layer 12 is disposed on one side of the substrate 11 in its own thickness direction Z. The light-emitting layer 12 includes a plurality of light-emitting units 13. The first adjustment layer 21 is disposed on the light-emitting side of the display panel 10. The first adjustment layer 21 has a plurality of dimming areas M, and the dimming areas M are located on the side of the light-emitting unit facing away from the substrate 11. Each dimming area M includes a plurality of adjustment particles 24, and each adjustment particle 24 is embedded in the first adjustment layer 21. The refractive index of the adjustment particle 24 is greater than the refractive index of the first adjustment layer 21.

[0045] Optionally, the display panel 10 in the display module 100 may be an Organic Light-Emitting Diode (OLED) display screen, which specifically includes a substrate 11 and a light-emitting layer 12 disposed on the substrate 11. The light-emitting layer 12 has a plurality of spaced-apart light-emitting units 13, such as red pixels, green pixels, and blue pixels. When forming red, green, and blue (RGB) three-color light, after mixing light on the light-emitting side, a color display is formed.

[0046] In this embodiment, a first adjustment layer 21 is disposed on the light-emitting side of the display panel 10. The first adjustment layer 21 covers the light-emitting side of the display panel 10. The first adjustment layer 21 has a plurality of dimming areas M. Then, the dimming areas M provided with the adjustment particles 24 are corresponding to the bottom-emitting light-emitting units 13, so that the plurality of dimming areas M correspond to the plurality of light-emitting units 13 one by one, thereby adjusting the light emission of the light-emitting units 13.

[0047] The adjustment particles 24 are filled into the corresponding dimming areas M of the first adjustment layer 21, so that the refractive index of the adjustment particles 24 is greater than the refractive index of the first adjustment layer 21 where they are located. When the bottom light-emitting units 13 emit light, the generated light will undergo total internal reflection at the interface with a refractive index difference, thereby adjusting the light at a large viewing angle to be emitted at a normal viewing angle, improving the light extraction efficiency and display brightness.

[0048] Optionally, the adjustment particles 24 are nano-scale particles. In the figure, for the convenience of explaining the working principle, the adjustment particles 24 are enlarged for illustration. There may be several adjustment particles 24 in the dimming area M, and there is a certain gap between adjacent adjustment particles 24, so as to have a predetermined density. The present application does not make special limitations on the number and size of the adjustment particles 24 in the dimming area M, as long as they can form an optical cooperation with the first adjustment layer 21 where they are located.

[0049] Optionally, the first adjustment layer 21 may be made of an organic glue material, and the adjustment particles 24 therein may be metal particles. The present application does not specifically limit the specific materials of the first adjustment layer 21 and the adjustment particles 24, and any materials that can satisfy the size relationship of the refractive indices of the above two are acceptable.

[0050] When the above display module 100 needs to be processed and formed, the first adjustment layer 21 can be processed and formed first, that is, the adjustment particles 24 are set in the multiple light adjustment areas M of the first adjustment layer 21. After forming, the first adjustment layer 21 is set on the light-emitting side of the display panel 10, so that the light adjustment areas M in the first adjustment layer 21 correspond to the light-emitting units 13 on the display panel 10 one by one, so that the light emitted by each light-emitting unit 13 can be adjusted by the light adjustment areas M in the first adjustment layer 21, and the preparation process of the display module 100 is completed.

[0051] An embodiment of the present invention provides a display module 100. By providing a first adjustment layer 21 on the display panel 10 and providing multiple light adjustment areas M therein, the light emitted by the corresponding light-emitting units 13 on the display panel 10 is adjusted by the light adjustment areas M. The refractive index of the adjustment particles 24 in the light adjustment area M is greater than the refractive index of the first adjustment layer 21. Due to the difference in the refractive indices of the two, using the principle of total internal reflection of light, the light at a large viewing angle can be concentrated and emitted at the front viewing angle, thereby improving the light extraction efficiency and effectively improving the display brightness. At the same time, on this basis, the light adjustment component 20, as a separate component, can be directly set on the light-emitting side of the display panel 10, avoiding the additional use of a mask for etching, reducing the forming process steps, reducing the process difficulty, saving the equipment cost, and having better economic benefits.

[0052] As an optional embodiment, please refer to Figure 2 , one end of the adjustment particle 24 in the thickness direction Z is located on the side of the first adjustment layer 21 close to the display panel 10, and the other end is at least located on the side of the first adjustment layer 21 away from the display panel 10. The adjustment particle 24 penetrates the first adjustment layer 21 in the thickness direction Z.

[0053] For the adjustment particles 24 provided on the first adjustment layer 21, the adjustment particles 24 can penetrate through the first adjustment layer 21 as a whole, and both ends thereof in the thickness direction Z respectively abut against the two side surfaces of the first adjustment layer 21 in the thickness direction Z. Thus, when adjusting the light emitted by the light-emitting unit 13, the light emitted by the light-emitting unit 13 can be adjusted and converged in a larger range, improving the light extraction efficiency.

[0054] An embodiment of the present invention provides a display module 100. By arranging the adjusting particles 24 to penetrate through the first adjusting layer 21, the adjusting particles 24 have a larger occupied space in the first adjusting layer 21, which is more conducive to the adjusted emission of light in the thickness direction Z, realizing more sufficient light extraction and further improving the overall display brightness.

[0055] As an alternative embodiment, please refer to Figure 3 , one end of the adjusting particle 24 facing away from the display panel 10 in the thickness direction Z protrudes from the surface of the first adjusting layer 21 facing away from the display panel 10, and the height dimension of the adjusting particle 24 in the thickness direction Z is greater than the height dimension of the first adjusting layer 21.

[0056] In this embodiment, the height of the adjusting particle 24 is set to be greater than the height of the first adjusting layer 21, so that the adjusting particle 24 protrudes appropriately from the top surface of the first adjusting layer 21 in the first adjusting layer 21, thereby being able to further converge the light emitted by the light-emitting unit 13, which is beneficial to concentrating the light at the front viewing angle for emission.

[0057] Optionally, the present application does not specifically limit the specific value of the protruding height of the adjusting particle 24 relative to the top surface of the first adjusting layer 21, as long as the converging effect on light can be achieved. At this time, the refractive index at the adjusting particle 24 can be 1.6 - 1.7, and the refractive index at the first adjusting layer 21 can be 1.4 - 1.5, meeting the requirement that the refractive index of the adjusting particle 24 is greater than the refractive index of the first adjusting layer 21.

[0058] An embodiment of the present invention provides a display module 100. By arranging the adjusting particle 24 to protrude from the top surface of the first adjusting layer 21 in the first adjusting layer 21, the protruding part of the adjusting particle 24 can better converge the totally reflected light to the front viewing angle, further improving the light extraction efficiency and improving the overall display brightness.

[0059] As an alternative embodiment, please refer to Figure 4 , one end of the adjusting particle 24 facing away from the display panel 10 in the thickness direction Z is flush with the surface of the first adjusting layer 21 facing away from the display panel 10.

[0060] An embodiment of the present invention provides a display module 100. By setting the adjusting particle 24 to be flush with the top surface of the first adjusting layer 21, the top surface of the first adjusting layer 21 is a flat surface. While using the adjusting particle 24 to improve the light extraction efficiency, it is beneficial to ensure the planarization design of the light adjustment component 20 and provide a basis for the formation of subsequent film layers.

[0061] As an alternative embodiment, please refer to Figure 4, one end of the adjustment particle 24 facing away from the display panel 10 in the thickness direction Z has an end face opening 26, and the end face opening 26 is located on the surface of the first adjustment layer 21 on the side facing away from the display panel 10.

[0062] Optionally, for the planarization design of the first adjustment layer 21, the adjustment particle 24 can be designed to be coated with a brittle outer shell, and it breaks under external extrusion to form an interface with alternating high and low refractive indices. At this time, an outwardly diffusing end face opening 26 is formed at the adjustment particle 24 and is located on the top surface of the first adjustment layer 21, which can achieve the planarization of the overall surface.

[0063] Optionally, due to the above-mentioned proper extrusion of the adjustment particle 24 to form the end face opening 26, the end face opening 26 is in a state of diffusing around, and the size of the end face opening 26 will increase appropriately, so that the positive projection of the adjustment particle 24 in the thickness direction Z is located within the positive projection of the end face opening 26, which is conducive to the emitted light after adjustment to be emitted around.

[0064] An embodiment of the present invention provides a display module 100. By setting the end face opening 26 on the adjustment particle 24 to be flush with the top surface of the first adjustment layer 21, on the basis of making the overall surface of the light adjustment component 20 flush, it can also use the end face opening 26 to improve the extraction efficiency of the light after adjustment and ensure that the overall display brightness is improved.

[0065] As an alternative embodiment, please refer to Figure 5 , the display module further includes a second adjustment layer 22. The second adjustment layer 22 has a light adjustment opening 25. The light adjustment opening 25 is correspondingly arranged with the light emitting unit 13 in the thickness direction Z. Part of the first adjustment layer 21 is arranged in the light adjustment opening 25. The second adjustment layer 22 surrounds the light adjustment area M, and the refractive index of the first adjustment layer 21 is greater than that of the second adjustment layer 22.

[0066] In this embodiment, the light adjustment component 20 is further provided with a second adjustment layer 22, and a light adjustment opening 25 corresponding to the light emitting unit 13 is provided on the second adjustment layer 22, and the light emitted by the light emitting unit 13 is further adjusted by using the light adjustment opening 25.

[0067] The adjustment particle 24 is arranged in the light adjustment opening 25 and part of the first adjustment layer 21 is arranged in the light adjustment opening 25, so that the refractive index of the first adjustment layer 21 is greater than that of the second adjustment layer 22, thereby forming a light adjustment component 20 structure with a gradually increasing refractive index, that is, the refractive index of the second adjustment layer 22 is less than that of the first adjustment layer 21 and less than that of the adjustment particle 24.

[0068] In this way, the light emitted by the light-emitting unit 13 can be initially adjusted at the interface between the first adjustment layer 21 and the second adjustment layer 22, and then secondarily adjusted by the adjustment particles 24 in the dimming opening 25. The light is adjusted twice during the light extraction process, further improving the light extraction efficiency.

[0069] Optionally, the orthographic projection of the light-emitting unit 13 in the thickness direction Z is located within the orthographic projection of the dimming opening 25. That is to say, the set size of the dimming opening 25 is larger than the opening size of the light-emitting unit 13, which is beneficial to the light emission at a large viewing angle and improves the initial light extraction efficiency. In this application, no special limitation is imposed on the specific size of the set dimming opening 25, and it only needs to satisfy the size relationship with the opening of the light-emitting unit 13.

[0070] Optionally, the surface of the dimming opening 25 close to the dimming area M is an inclined surface that gradually extends away from the dimming area M. The setting of the inclined surface meets the requirements of the light emission angle, which is beneficial to the light emission at a large viewing angle and reduces the blockage of the light by the second adjustment layer 22.

[0071] An embodiment of the present invention provides a display module 100. By setting the second adjustment layer 22, the refractive index of the second adjustment layer 22 is less than that of the first adjustment layer 21, so that an overall structure with a gradually changing refractive index is formed, realizing the secondary extraction of the light emitted by the light-emitting unit 13, further fully improving the light extraction efficiency, and improving the display brightness.

[0072] As an optional embodiment, the multiple light-emitting units 13 include a first light-emitting unit and a second light-emitting unit, and the concentration of the adjustment particles 24 in the dimming area M corresponding to the first light-emitting unit is greater than the concentration of the adjustment particles 24 in the dimming area M corresponding to the second light-emitting unit.

[0073] When different light-emitting units 13 require different light extraction efficiencies, the light extraction efficiency can be adjusted by adjusting the concentration of the corresponding adjustment particles 24. The greater the concentration of the adjustment particles 24, the higher the light extraction efficiency.

[0074] The so-called concentration of the adjustment particles 24 refers to the proportion of the number of the adjustment particles 24 in the first adjustment layer 21. The higher the concentration, the more adjustment particles 24 there are at the corresponding position in the first adjustment layer 21, thereby forming total internal reflection at more positions for the light and improving the light extraction efficiency.

[0075] For example, in this embodiment, the first light-emitting unit requires a higher display brightness compared to the second light-emitting unit. At this time, the concentration of the adjustment particles 24 corresponding to the first light-emitting unit needs to be set to be greater than the concentration of the adjustment particles 24 corresponding to the second light-emitting unit, so as to obtain a higher light extraction efficiency at the position of the first light-emitting unit and a higher display brightness compared to the second light-emitting unit.

[0076] Optionally, the size of the adjustment particles 24 in the dimming area M corresponding to the first light-emitting unit is smaller than the size of the adjustment particles 24 in the dimming area M corresponding to the second light-emitting unit. The present application does not make special limitations on the specific size of the adjustment particles 24, and corresponding adjustments can be made according to the brightness requirements of the actual light-emitting unit 13.

[0077] Optionally, the cross-section of the adjustment particles 24 in the thickness direction Z includes a circle, an ellipse, and / or a polygon. As Figure 6 shown, the adjustment particles 24 with different shape structures can all adjust the light, making it better converge and exit at the front view angle. Therefore, the shape of the adjustment particles 24 is diverse. The present application does not make special limitations on the specific shape of the adjustment particles 24, and it can be determined according to the actual molding requirements.

[0078] An embodiment of the present invention provides a display module 100. By adjusting the concentration of the adjustment particles 24 corresponding to different light-emitting units 13, the light extraction efficiency of different light-emitting units 13 is adjusted, and the light output of different light-emitting units 13 is adjusted specifically, which can better adapt to different brightness adjustment requirements and meet more adjustment working conditions.

[0079] Please refer to Figure 7 , according to an embodiment of the present invention, a preparation method of a display module 100 includes:

[0080] S1. Provide a first adjustment layer 21 and divide the first adjustment layer 21 into multiple dimming areas M;

[0081] S2. Set multiple adjustment particles 24 distributed at intervals in each dimming area M, and the refractive index of the adjustment particles 24 is greater than the refractive index of the first adjustment layer 21;

[0082] S3. Provide a display panel 10. The display panel 10 includes a substrate 11 and a light-emitting layer 12. The light-emitting layer 12 includes multiple light-emitting units 13. Connect the first adjustment layer 21 to the light-emitting side of the display panel 10, and make multiple dimming areas M be located on the side of multiple light-emitting units 13 facing away from the substrate 11 respectively.

[0083] In step S1, the provided first adjustment layer 21 can be an organic glue layer with a refractive index between 1.4 and 1.5. The multiple dimming areas M divided on the first adjustment layer 21 correspond to the multiple light-emitting units 13 on the display panel 10, and the light output of the light-emitting units 13 is adjusted through the corresponding dimming areas M one by one.

[0084] In step S2, a number of adjustment particles 24 can be filled in each dimming area M. The adjustment particles 24 can be metal particles with a refractive index between 1.6 and 1.7. For different light-emitting units 13, according to the brightness requirements of different light-emitting units 13 actually needed, the concentration of the adjustment particles 24 in different dimming areas M is adjusted, so that different light-emitting units 13 have different light extraction efficiencies, and the brightness of the light-emitting units 13 is adjusted specifically.

[0085] Before connecting the first adjustment layer 21 to the light-emitting side of the display panel 10 in step S3, a packaging layer is formed on the side of the light-emitting layer 12 away from the substrate 11, and the first adjustment layer 21 is formed on the side of the packaging layer away from the light-emitting side. As Figure 8 shown, the filled first adjustment layer 21 is attached to the light-emitting side of the packaged display panel 10 by means such as coating, printing, or external pasting of a film, so that the dimming areas M correspond one by one to the multiple light-emitting units 13 of the display panel 10, and the adjustment particles 24 therein are used to improve the light extraction efficiency of the corresponding light-emitting units 13, obtaining the overall structure of the final display module 100.

[0086] Optionally, after obtaining the above-mentioned first adjustment layer 21, that is, after the first adjustment layer 21 is formed separately, it can be directly attached to the light-emitting side of the packaged display panel 10 by means such as coating, printing, or external pasting of a film, avoiding the use of an additional mask plate for etching the dimming film layer, thereby saving process steps, reducing process difficulty, and also reducing process equipment costs.

[0087] According to an embodiment of the present invention, a display device is provided, including the display module 100 described in any one of the above. Optionally, the display device can be all products related to display, such as lighting, vehicle lights, mobile phones, televisions, tablets, vehicle-mounted displays, etc. The specific types of the display device are not particularly limited in this application.

[0088] An embodiment of the present invention provides a display module, a preparation method thereof, and a display device. By providing a first adjustment layer on a display panel and having a plurality of dimming areas therein, the light emitted by the corresponding light-emitting units on the display panel is adjusted by the dimming areas, and the refractive index of the adjustment particles in the dimming areas is greater than the refractive index of the first adjustment layer. Due to the difference in refractive indices between the two, using the principle of total internal reflection of light, the light at a large viewing angle can be concentrated and emitted at the front viewing angle, thereby improving the light extraction efficiency and effectively improving the display brightness. At the same time, on this basis, the light adjustment component, as a separate component, can be directly arranged on the light-emitting side of the display panel, avoiding the additional use of a mask plate for etching, reducing the forming process steps, reducing the process difficulty, saving equipment costs, and having better economic benefits.

[0089] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display module, characterized in that: include: The display panel comprises a substrate and a light-emitting layer, wherein the light-emitting layer is arranged on one side of the substrate in a thickness direction thereof, and the light-emitting layer comprises a plurality of light-emitting units; A first adjustment layer, disposed on the light-emitting side of the display panel, the first adjustment layer having a plurality of dimming zones, the dimming zones being located on a side of the light-emitting unit away from the substrate; Wherein, each of the dimming areas is provided with a plurality of adjustment particles, each of the adjustment particles is embedded in the first adjustment layer, and the refractive index of the adjustment particles is greater than the refractive index of the first adjustment layer.

2. The display module according to claim 1, characterized in that: One end of the regulating particle in the thickness direction is located on a side of the first regulating layer close to the display panel, and the other end is at least located on a side of the first regulating layer away from the display panel, and the regulating particle penetrates the first regulating layer in the thickness direction.

3. The display module according to claim 2, characterized in that: One end of the regulating particle in the thickness direction away from the display panel protrudes from the surface of the first regulating layer away from the display panel, and the height dimension of the regulating particle in the thickness direction is greater than the height dimension of the first regulating layer; Preferably, the refractive index of the regulating particles is 1.6-1.7, and the refractive index of the first regulating layer is 1.4-1.

5.

4. The display module according to claim 2, characterized in that: One end of the regulating particle in the thickness direction away from the display panel is arranged flush with a surface of the first regulating layer on a side away from the display panel.

5. The display module according to claim 4, characterized in that: The end of the regulating particle in the thickness direction away from the display panel has an end surface opening, and the end surface opening is located on the surface of the first regulating layer on the side away from the display panel; Preferably, the orthographic projection of the regulating particle on the substrate is located within the orthographic projection of the end surface opening on the substrate.

6. The display module according to claim 1, characterized in that: Also includes a second adjustment layer, the second adjustment layer has a dimming opening, the dimming opening is arranged corresponding to the light-emitting unit in the thickness direction, a part of the first adjustment layer is arranged in the dimming opening, the second adjustment layer surrounds the dimming area, and the refractive index of the first adjustment layer is greater than the refractive index of the second adjustment layer; Preferably, the orthographic projection of the light emitting unit on the substrate is located within the orthographic projection of the dimming opening on the substrate; Preferably, a surface of the dimming opening close to the dimming area is an inclined surface which gradually extends away from the dimming area.

7. The display module according to claim 1, characterized in that: The plurality of light-emitting units include a first light-emitting unit and a second light-emitting unit, and the concentration of adjustment particles in the dimming zone corresponding to the first light-emitting unit is greater than the concentration of adjustment particles in the dimming zone corresponding to the second light-emitting unit; Preferably, the adjustment particle size in the dimming zone corresponding to the first light-emitting unit is smaller than the adjustment particle size in the dimming zone corresponding to the second light-emitting unit; Preferably, the cross-section of the regulating particle in the thickness direction includes a circle, an ellipse and / or a polygon; Preferably, the regulating particles include metal particles.

8. A method for preparing a display module, characterized in that: include: Providing a first adjustment layer, and dividing the first adjustment layer into a plurality of dimming zones; A plurality of adjustment particles distributed at intervals are respectively arranged in each of the dimming zones, wherein the refractive index of the adjustment particles is greater than the refractive index of the first adjustment layer; A display panel is provided, which includes a substrate and a light-emitting layer, wherein the light-emitting layer includes a plurality of light-emitting units, the first adjustment layer is connected to the light-emitting side of the display panel, and the plurality of dimming areas are respectively located on a side of the plurality of light-emitting units away from the substrate.

9. The preparation method according to claim 8, characterized in that: Before connecting the first adjustment layer to the light emitting side of the display panel, the method further includes: An encapsulation layer is formed on a side of the light-emitting layer away from the substrate, and the first regulating layer is formed on a side of the encapsulation layer away from the light-emitting side.

10. A display device, characterized in that: Comprising the display module as described in any one of claims 1 to 7.

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