Display panel and manufacturing method thereof, and display device

Abstract

The present application discloses a display panel, a preparation method thereof and a display device, which belong to the field of display technology. The display panel includes: a substrate, a plurality of light-emitting devices, a color resist layer, a transparent structural layer and a light-blocking structure. Among them, the light-blocking structure includes a light-absorbing layer and a light-reflecting layer, and the light-reflecting layer can block part of the external light reflected by some structures on the side of the substrate from the light-reflecting layer to prevent the part of the external light from being absorbed by the light-absorbing layer, and reflect the part of the external light toward the substrate, so that part of the light can pass through the substrate. In this way, without affecting the light-absorbing layer to absorb external light to reduce the reflection effect of the display panel, the light-reflecting layer reflects at least part of the external light reflected by the light-emitting device, reduces the absorption ratio of the external light entering the display panel by the light-shielding pattern, thereby increasing the light transmittance of the display panel, and achieving the effect of improving the light transmittance of the display panel.

Description

Technical Field

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

[0002] At present, the display device can realize color display by combining the light emitting device with the color film structure. When natural light enters the color film structure, the color film structure can absorb part of the natural light, thereby reducing the reflectivity of the display device and improving the contrast ratio.

[0003] However, the light transmittance of the above display panel is low. Summary of the invention

[0004] The embodiment of the present application provides a display panel and a manufacturing method thereof and a display device to solve the problem of low light transmittance of the display panel in the related art. The technical solution is as follows:

[0005] According to one aspect of the present application, a display panel is provided, comprising:

[0006] substrate substrate;

[0007] A plurality of light emitting devices disposed at intervals on the substrate;

[0008] A color resist layer located on a side of the light emitting device away from the substrate;

[0009] A transparent structural layer located on a side of the color resist layer away from the base substrate;

[0010] A light-blocking structure is located on the side of the transparent structure layer away from the base substrate, the light-blocking structure includes a light-absorbing layer and a light-reflecting layer located on the side of the light-absorbing layer close to the base substrate, and the orthographic projection of the light-blocking structure on the base substrate is located between the orthographic projections of the plurality of light-emitting devices arranged at intervals on the base substrate.

[0011] Optionally, the display panel further includes a light-transmitting cover plate, the transparent structural layer includes a transparent flat layer, the transparent flat layer has a groove on a side away from the base substrate, the light-blocking structure is located in the groove, and the light-transmitting cover plate is located on a side of the light-blocking structure away from the transparent flat layer.

[0012] Optionally, the transparent structural layer includes a transparent flat layer and a light-transmitting cover plate, the transparent flat layer is located on a side of the light-transmitting cover plate close to the base substrate, and the light-blocking structure is located on a side of the light-transmitting cover plate away from the base substrate.

[0013] Optionally, the display panel further includes a protective film, and the protective film is located on a side of the light blocking structure away from the base substrate.

[0014] Optionally, the thickness of the protective film is greater than the thickness of the light blocking structure.

[0015] Optionally, an orthographic projection of the light reflecting layer on the base substrate overlaps with an orthographic projection of the light absorbing layer on the base substrate.

[0016] Optionally, the base substrate has a light-transmitting display area and a conventional display area, the size of the light-blocking structure in the light-transmitting display area is smaller than the size of the light-blocking structure in the conventional display area, and the size of the light-blocking structure is the size of the light-blocking structure in the direction of the shortest connection line between two adjacent light-emitting devices.

[0017] Optionally, the size of the light blocking structure in the light-transmitting display area is 10% to 60% of the spacing distance between two adjacent light-emitting devices.

[0018] Optionally, the light emitting device comprises a first electrode, a light emitting material layer and a second electrode which are sequentially stacked in a direction away from the base substrate;

[0019] Wherein, the side of the first electrode away from the base substrate is a reflective metal layer;

[0020] The second electrode is a semi-transmissive and semi-reflective layer.

[0021] Optionally, the material of the reflective layer includes silver and copper.

[0022] According to another aspect of the present application, a method for preparing a display panel is provided, the method comprising:

[0023] forming a plurality of light emitting devices spaced apart from each other on a base substrate;

[0024] A stacked color resist layer, a transparent structural layer and a light-blocking structure are arranged on the side of the light-emitting device away from the base substrate. The light-blocking structure includes a light-absorbing layer and a light-reflecting layer located on the side of the light-absorbing layer close to the base substrate. The orthographic projection of the light-blocking structure on the base substrate is located between the orthographic projections of the plurality of light-emitting devices arranged at intervals on the base substrate.

[0025] Optionally, the stacked color resist layer, transparent structure layer and light blocking structure are arranged on a side of the light emitting device away from the base substrate, including:

[0026] forming the light blocking structure on the light-transmitting cover plate;

[0027] Forming the color resist layer on a side of the light emitting device away from the substrate;

[0028] Forming the transparent structure layer on the base substrate on which the color resist layer is formed, wherein the transparent structure layer comprises a transparent flat layer, and a side of the transparent flat layer away from the base substrate has a groove;

[0029] The light-transmitting cover plate formed with the light-blocking structure is covered on the base substrate formed with the transparent structure layer, the light-blocking structure is located on a side of the light-transmitting cover plate close to the base substrate, and the light-blocking structure is located in the groove.

[0030] Optionally, the stacked color resist layer, transparent structure layer and light blocking structure are arranged on a side of the light emitting device away from the base substrate, including:

[0031] forming the light blocking structure on the light-transmitting cover plate;

[0032] Forming a color resist layer on a side of the light emitting device away from the substrate;

[0033] Forming a transparent flat layer on the base substrate having the color resist layer formed thereon;

[0034] The light-transmitting cover plate with the light-blocking structure is covered on the base substrate with the transparent flat layer. The light-transmitting cover plate and the transparent flat layer constitute the transparent structure layer. The light-blocking structure is located on a side of the light-transmitting cover plate away from the base substrate.

[0035] According to another aspect of the present application, a display device is provided, comprising: a power supply component and a display panel, the display panel is the above-mentioned display panel, and the power supply component is used to supply power to the display panel.

[0036] Optionally, the display device further includes: a photosensitive sensor, wherein a light-incoming surface of the photosensitive sensor faces the display panel.

[0037] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0038] A display panel is provided, comprising: a substrate, a plurality of light-emitting devices, a color resist layer, a transparent structural layer and a light-blocking structure. The light-blocking structure comprises a light-absorbing layer and a light-reflecting layer, and the light-reflecting layer can block part of the external light reflected by some structures on the side of the light-reflecting layer toward the substrate substrate to prevent the part of the external light from being absorbed by the light-absorbing layer, and reflect the part of the external light toward the substrate substrate, so that part of the light can pass through the substrate substrate. In this way, without affecting the light-absorbing layer to absorb external light to reduce the reflection effect of the display panel, the light-reflecting layer reflects at least part of the external light reflected by the light-emitting device, and reduces the absorption ratio of the external light entering the display panel by the light-shielding pattern, thereby increasing the light transmittance of the display panel, solving the problem of low light transmittance of the display panel in the related art, and achieving the effect of improving the light transmittance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 is a schematic diagram of the structure of a display panel;

[0041] Figure 2 is a schematic top view of a display panel provided in an embodiment of the present application;

[0042] Figure 3 is a schematic diagram of a cross-sectional structure of a display panel connected along line B1-B2;

[0043] Figure 4 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0044] Figure 5 is a schematic diagram of a top view structure of another display panel provided in an embodiment of the present application;

[0045] Figure 6 yes Figure 5 A schematic diagram of a cross-sectional structure of a display panel along line C1-C2 shown;

[0046] Figure 7 is a flow chart of a method for preparing a display panel provided in an embodiment of the present application;

[0047] Figure 8 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application;

[0048] Fig. 9 This is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.

[0049] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0051] Organic light emitting devices (OLEDs) are current-type light-emitting devices that are increasingly being used in the field of high-performance displays due to their low power consumption, self-luminescence, high color saturation, fast response, wide viewing angle, and flexibility.

[0052] At present, in order to reduce the reflectivity of the internal structure of the OLED display panel to ambient light, the following method can be adopted: encapsulate a color film structure on the light-emitting side of the OLED display panel, and the color film structure may include a shading pattern and a color resist layer. Since the color filter can absorb and filter external light, that is, when external light is incident on the color film structure, when natural light enters the color film structure, the shading pattern in the color film structure will absorb part of the natural light, thereby reducing the light reflected to the outside of the display panel.

[0053] With the continuous development of display panels, display devices usually have photosensitive sensors such as image sensors to realize camera functions or biometric recognition functions, etc. In order to increase the screen-to-body ratio of the display device, one way is to place the image sensor in the display device below the display panel, and make the area facing the display panel and the photosensitive sensor still able to display the picture under the premise of having a light-transmitting function.

[0054] Please refer to Figure 1 , Figure 1It is a schematic diagram of the structure of a display panel. The display panel 10 includes: a base substrate 11, a plurality of light-emitting devices 12, a color film structure 13 and a transparent cover plate 14. Among them, the color film structure 13 may include a shading pattern 131 and a color resist layer 132. The color resist layer 132 may include a color filter film. Since the thickness of the color filter film is thinner than that of the polarizer, the thickness of the module stacking structure can be effectively reduced, thereby improving the product's resistance to bending and curling. At the same time, the color film structure 13 can effectively improve the transmittance of light compared to the polarizer, so the display integrated with the color film structure 13 can achieve the same brightness. The required driving current is smaller, which effectively reduces the power consumption.

[0055] However, in order to reduce the reflection of external light (ambient light) and improve the contrast, the color resist layer 132 introduces a shading pattern 131 in the non-pixel area, resulting in a low transmittance problem in the display panel 10, which may lead to less light entering the photosensor in the display device.

[0056] Please refer to Figure 2 and Figure 3 , Figure 2 is a schematic top view of a display panel provided in an embodiment of the present application, Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the B1-B2 line of the display panel shown. In the embodiment of the present application, the B1-B2 line can be any position of the display panel, and the display panel 20 may include: a base substrate 21, a plurality of light-emitting devices 22, a color resist layer 23, a transparent structure layer 24, and a light-blocking structure 25.

[0057] A plurality of light emitting devices 22 may be located on the base substrate 21 and arranged at intervals, and the plurality of light emitting devices 22 may be uniformly arranged on the base substrate 21 at fixed intervals. The plurality of light emitting devices 22 may include: a plurality of light emitting devices for emitting red light, a plurality of light emitting devices for emitting green light, and a plurality of light emitting devices for emitting blue light. That is, at least one pixel on the display panel 20 may be composed of a light emitting device for emitting red light, a light emitting device for emitting green light, and a light emitting device for emitting blue light, and the three primary colors of light may be mixed into the color displayed by at least one pixel, thereby enabling the display panel to display a color picture.

[0058] The color resist layer 23 may be located on the side of the light emitting device 22 away from the substrate 21, and the color resist layer 23 may include a color filter. The color filter is an optical filter that expresses color and can more accurately select a certain range of light waves that can pass through. For example, the color filter may include one or more of a red filter, a green filter, and a blue filter.

[0059] The transparent structure layer 24 may be located on the side of the color resist layer 23 away from the base substrate 21 . The transparent structure layer 24 may play a role of planarization and encapsulation. The transparent structure layer 24 in the embodiment of the present application may refer to a film layer with high light transmittance.

[0060] The light blocking structure 25 may be located on the side of the transparent structure layer 24 away from the base substrate 21, wherein the light blocking structure 25 may include a light absorbing layer 251 and a light reflecting layer 252 located on the side of the light absorbing layer 251 close to the base substrate 21. The orthographic projection of the light blocking structure 25 on the base substrate 21 is located between the orthographic projections of the plurality of light emitting devices 22 arranged at intervals on the base substrate 21. The light absorbing layer 251 may be used to absorb the external light s irradiated to the display panel 20, which may reduce the surface reflectivity of the display panel 20, and at the same time may increase the contrast of the display panel 20, thereby improving the display effect of the display panel 20. Exemplarily, when the external light s irradiates the display panel 20, part of the external light s may be absorbed by the light absorbing layer 251, and part of the external light s may be incident on the inside of the display panel 20 through the color resist layer 23.

[0061] Since some structures (such as multiple light-emitting devices 22) on the side of the reflective layer 252 facing the base substrate 21 in the multiple light-emitting devices 22 in the display panel 20 can receive the external light s irradiated on the light-emitting devices 22, and reflect part of the external light s irradiated on the light-emitting devices 22 to the position where the light-absorbing layer 251 is located, the reflective layer 252 located on the side of the light-absorbing layer 251 close to the light-emitting devices 22 can be used to block part of the external light to prevent the part of the light from being absorbed by the light-absorbing layer 251, and reflect the part of the light in the direction toward the base substrate 21, So that part of the light can pass through the base substrate 21. For example, at least part of the light can be reflected to the area between the multiple light-emitting devices 22. The area with multiple light-emitting devices 22 can be a region with higher transmittance. When the reflective layer 252 is reflected to the area with higher transmittance, at least part of the external light can pass through the area, which can avoid the light-absorbing layer 251 in the light-blocking structure 25 absorbing the external light s reflected by the multiple light-emitting devices 22, thereby increasing the probability of the external light s passing through the display panel 20, so that the transmittance of the display panel 20 is higher.

[0062] In summary, the embodiment of the present application provides a display panel, including: a substrate, a plurality of light-emitting devices, a color resist layer, a transparent structural layer and a light-blocking structure. Among them, the light-blocking structure includes a light-absorbing layer and a light-reflecting layer, and the light-reflecting layer can block part of the external light reflected by some structures on the side of the reflective layer toward the substrate substrate to prevent the part of the external light from being absorbed by the light-absorbing layer, and reflect the part of the external light toward the substrate substrate, so that part of the light can pass through the substrate substrate. In this way, without affecting the light-absorbing layer to absorb external light to reduce the reflection effect of the display panel, the reflective layer reflects at least part of the external light reflected by the light-emitting device, reduces the absorption ratio of the external light entering the display panel by the light-shielding pattern, thereby increasing the light transmittance of the display panel, solving the problem of low light transmittance of the display panel in the related art, and achieving the effect of improving the light transmittance of the display panel.

[0063] Optional, such as Figure 3 As shown, the display panel 20 further includes a transparent cover plate 26, which can be used to isolate water and oxygen to prevent external water and oxygen from entering the interior of the display panel, and can also be used to prevent the display panel 20 from being damaged by external forces. The transparent structure layer 24 may include a transparent flat layer 241, and the transparent flat layer 241 has a groove 2411 on the side away from the base substrate 21, the light blocking structure 25 may be located in the groove 2411, and the transparent cover plate 26 is located on the side of the light blocking structure 25 away from the transparent structure layer 24. That is, the display panel 20 may include a plurality of light emitting devices 22, a color resist layer 23, a transparent structure layer 24, a light blocking structure 25, and a transparent cover plate 26 arranged in sequence in a direction away from the base substrate 21.

[0064] The material of the transparent flat layer 241 may include optically clear adhesive (OCA), which may be disposed as a whole layer to achieve a flattening effect and improve the bonding reliability of the transparent cover plate 26 .

[0065] like Figure 4 As shown, Figure 4 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application. Figure 2 Some adjustments are made based on the display panel shown. Optionally, the transparent structure layer 24 may include a transparent flat layer 241 and a transparent cover plate 26, the transparent flat layer 241 is located on the side of the transparent cover plate 26 close to the base substrate 21, and the light blocking structure 25 may be located on the side of the transparent cover plate 26 away from the base substrate 21. In this way, the flatness of the transparent flat layer 241 and the color resist layer 23 can be improved.

[0066] Optional, such as Figure 4As shown, the display panel 20 may further include a protective film 27, which is located on the side of the light blocking structure 25 away from the base substrate 21. That is, the display panel 20 may include a plurality of light emitting devices 22, a color resist layer 23, a transparent structure layer 24, a light-transmitting cover plate 26, a light blocking structure 25, and a protective film 27, which are sequentially arranged in a direction away from the base substrate 21.

[0067] The material of the protective film 27 may include polyethylene glycol terephthalate (PET) or optically transparent adhesive.

[0068] Polyethylene terephthalate can make the protective film 27 have good physical and mechanical properties, such as good fatigue resistance, friction resistance, and dimensional stability. The thickness of the protective film 27 can be greater than, equal to, or less than the thickness of the light-blocking structure 25, and can protect the side of the light-blocking structure 25 away from the base substrate 21.

[0069] The optically transparent adhesive has good light transmittance and flatness, which can make the side of the protective film 27 away from the base substrate 21 more flat. In this way, the side of the display panel 20 that displays the image (i.e. Figure 4 The upper side of the display panel 20 has a relatively flat surface, which can improve the display effect of the display panel 20.

[0070] Optionally, the thickness of the protective film 27 may be greater than the thickness of the light blocking structure 25 , so that the flatness of the side of the protective film 27 away from the base substrate 21 may be better.

[0071] Optional, such as Figure 3 or Figure 4 As shown, the orthographic projection of the light reflecting layer 252 on the base substrate 21 overlaps with the orthographic projection of the light absorbing layer 251 on the base substrate 21. When the orthographic projection of the light reflecting layer 252 on the base substrate 21 is located within the orthographic projection of the light absorbing layer 251 on the base substrate 21, the light reflecting layer 252 can be used to prevent the light absorbing layer 251 from absorbing the external light reflected by the light emitting device 22. When the orthographic projection of the light reflecting layer 252 on the base substrate 21 overlaps with the orthographic projection of the light absorbing layer 251 on the base substrate 21, the probability that the light reflecting layer 252 reflects the external light reflected by the light emitting device 22 can be further increased.

[0072] Optional, please refer to Figure 5 and Figure 6 , Figure 5 is a schematic diagram of a top view of another display panel provided in an embodiment of the present application, Figure 6 yes Figure 5A schematic diagram of the cross-sectional structure of the display panel along the C1-C2 line is shown. In the embodiment of the present application, the orthographic projection of the C1-C2 line on the base substrate 21 overlaps with the orthographic projection of the edge of the light-transmitting display area 21a on the base substrate 21. A plurality of light-emitting devices 22 may be arranged in an array on the base substrate 21.

[0073] The base substrate 21 may have a light-transmitting display area 21a and a conventional display area 21b. The area where the light-transmitting display area 21a is located may correspond to the area where the photosensitive surface of the photosensitive sensor in the display device is located. The light-transmitting display area 21a can enable the area directly facing the display panel and the photosensitive sensor to still display images while having a light-transmitting function. The light transmittance of the light-transmitting display area 21a may be greater than the light transmittance of the conventional display area 21b.

[0074] The size L1 of the light-blocking structure 25 in the light-transmitting display area 21a is smaller than the size L2 of the light-blocking structure 25 in the conventional display area 21b. The size (L1 or L2) of the light-blocking structure 25 is the size of the light-blocking structure 25 in the direction of the shortest line connecting two adjacent light-emitting devices 22. Figure 2 As shown, the two adjacent light emitting devices 22 refer to the two orthographic projections of the two light emitting devices 22 on the substrate 21 being adjacent. The shortest connection direction of the two adjacent light emitting devices 22 may refer to the direction of the shortest distance between the orthographic projections of the two adjacent light emitting devices 22. The shortest connection mode refers to the direction of the shortest straight line connection, that is, Figure 2 The direction of the D1-D2 line or the D3-D4 line in the image, wherein the D1-D2 line or the D3-D4 line can be perpendicular to the edge of the positive projection of the light blocking structure 25 on the base substrate 21, and the D1-D2 line or the D3-D4 line is a straight line.

[0075] Optional, please refer to Figure 6 , the size L1 of the light-blocking structure 25 in the light-transmitting display area 21a is 10% to 60% of the spacing distance between two adjacent light-emitting devices 22. The spacing distance may refer to the distance in the connection direction of two adjacent light-emitting devices 22. The display panel 20 may also include: a pixel defining layer 28, the pixel defining layer 28 may be located on the base substrate 21, and the pixel defining layer 28 may be used to divide the base substrate 21 into a plurality of pixel regions. The light-emitting device 22 may be located in the pixel region. The spacing distance between two adjacent light-emitting devices 22 may refer to the width of the pixel defining layer 28 between two adjacent light-emitting devices in the direction f1 parallel to the board surface of the base substrate 21. The width may range from 5 microns to 50 microns. The pixel defining layer 28 may have good light transmittance, and the light-blocking width of the light-blocking structure 25 in the light-transmitting display area 21a is smaller than the width of the pixel defining layer, which may make the light-transmitting effect of the light-transmitting display area 21a higher.

[0076] Optionally, the light emitting device 22 may include a first electrode 221, a light emitting material layer 222 and a second electrode 223 stacked in sequence in a direction away from the base substrate 21. Among them, the side of the first electrode 221 away from the base substrate 21 is a reflective metal layer, the first electrode 221 may be an anode, the second electrode 223 is a semi-transparent and semi-reflective layer, and the second electrode 223 may be a cathode. Exemplarily, when the thickness of the second electrode is 130 angstroms, the reflectivity under a light beam with a wavelength of 550 nanometers (nm) is about 30%, and the reflectivity under a light beam with a wavelength of 940nm is about 63%; the cathode may be a whole layer structure. The spacing distance between two adjacent light emitting devices 22 may also refer to the distance between the anodes of the two adjacent light emitting devices in the direction f1 parallel to the plate surface of the base substrate 21.

[0077] The first electrode 221 may include a three-layer structure of silver (Ag), indium tin oxide (ITO) and silver (ITO) stacked in sequence in a direction away from the base substrate 21, wherein the silver on the side of the first electrode 221 away from the base substrate 21 is a reflective metal layer, which can reflect external light irradiated to the reflective metal layer and reflect part of the received external light to the reflective layer.

[0078] Optionally, the material of the reflective layer 252 may include silver and copper, so that the reflective layer 252 has a better light reflectivity.

[0079] Optional, such as Figure 6 As shown, the display panel 20 may further include an encapsulation layer (Thin Film Encapsulation; abbreviated as TFE) 29 , which may be used to block water vapor outside the display panel 20 to prevent the light emitting device 22 from failing due to the intrusion of water vapor.

[0080] In summary, an embodiment of the present application provides a display panel, which includes: a substrate, a plurality of light-emitting devices, a color resist layer, a transparent structural layer, and a light-blocking structure. The light-blocking structure includes a light-absorbing layer and a light-reflecting layer, and the light-reflecting layer can block part of the external light reflected by the light-emitting device to prevent the part of the external light from being absorbed by the light-absorbing layer, and reflect the part of the external light to the area of ​​the display panel where the light-emitting device is not provided, and pass through the area where the light-emitting device is not provided. In this way, without affecting the light-absorbing layer to absorb external light to reduce the reflection effect of the display panel, the light-reflecting layer reflects at least part of the external light reflected by the light-emitting device, and reduces the absorption ratio of the external light entering the display panel by the light-shielding pattern, thereby increasing the light transmittance of the display panel, solving the problem of low light transmittance of the display panel in the related art, and achieving the effect of improving the light transmittance of the display panel.

[0081] Figure 7is a flow chart of a method for preparing a display panel provided in an embodiment of the present application. The method can be used to prepare the display panel 20 in any of the above embodiments, such as Figure 7 As shown, the method may include:

[0082] Step 301: Form a plurality of spaced-apart light-emitting devices on a substrate.

[0083] Step 302: Dispose a stacked color resist layer, a transparent structure layer and a light blocking structure on a side of the light emitting device away from the substrate.

[0084] The light blocking structure includes a light absorbing layer and a light reflecting layer located on the side of the light absorbing layer close to the base substrate, and the orthographic projection of the light blocking structure on the base substrate is located between the orthographic projections of the plurality of light emitting devices arranged at intervals on the base substrate.

[0085] In summary, the embodiment of the present application provides a display panel, including: a substrate, a plurality of light-emitting devices, a color resist layer, a transparent structural layer and a light-blocking structure. Among them, the light-blocking structure includes a light-absorbing layer and a light-reflecting layer, and the light-reflecting layer can block part of the external light reflected by some structures on the side of the reflective layer toward the substrate substrate to prevent the part of the external light from being absorbed by the light-absorbing layer, and reflect the part of the external light toward the substrate substrate, so that part of the light can pass through the substrate substrate. In this way, without affecting the light-absorbing layer to absorb external light to reduce the reflection effect of the display panel, the reflective layer reflects at least part of the external light reflected by the light-emitting device, reduces the absorption ratio of the external light entering the display panel by the light-shielding pattern, thereby increasing the light transmittance of the display panel, solving the problem of low light transmittance of the display panel in the related art, and achieving the effect of improving the light transmittance of the display panel.

[0086] Figure 8 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application. The method can be used to prepare the display panel in the above embodiment. Figure 3 The display panel 20 shown in FIG. Figure 8 As shown, the method may include:

[0087] Step 401: Obtain a base substrate and a light-transmitting cover plate.

[0088] The substrate and the light-transmitting cover plate can be made of materials such as glass, silicon wafer, quartz or plastic.

[0089] Step 402: Form a plurality of light emitting devices spaced apart from each other on a substrate.

[0090] A pixel defining layer may be formed on the base substrate first, the pixel defining layer may have a plurality of pixel openings, and a plurality of light emitting devices may be located in the pixel openings to form a plurality of light emitting devices with intervals.

[0091] Step 403: forming a light blocking structure on the light-transmitting cover plate.

[0092] Forming a light-blocking structure on a transparent cover plate may include the following four sub-steps:

[0093] 1) A light absorbing material layer is formed on the light-transmitting cover plate.

[0094] The light absorbing material layer may be a black resin or a black paint, and the thickness may range from 0.5 micrometers to 10 micrometers. Furthermore, the thickness of the light absorbing material layer may be 1.3 micrometers (μm).

[0095] 2) Performing a patterning process on the light absorbing material layer to form a light absorbing layer.

[0096] The patterning process in the embodiment of the present application may include at least one of: photoresist coating, exposure, development, etching and photoresist stripping. The light absorbing layer may be a black matrix or other patterns with light absorbing function, which is not limited in the embodiment of the present application.

[0097] 3) forming a reflective material layer on the light-transmitting cover plate having the light-absorbing layer formed thereon.

[0098] The reflective material layer may be a film layer made of silver, and the reflective layer may be prepared by a silver mirror reaction.

[0099] 4) Performing a patterning process on the reflective material layer to form a reflective layer to form a light blocking structure.

[0100] The orthographic projection of the light reflecting layer on the base substrate may overlap with the orthographic projection of the light absorbing layer on the base substrate, and the light blocking structure may include the light absorbing layer and the light reflecting layer.

[0101] Step 404: forming a color resist layer on a side of the light emitting device away from the substrate.

[0102] The encapsulation layer can be first formed on the side away from the base substrate, and the color resist layer can be formed on the side of the encapsulation layer away from the base substrate. In this way, the light absorption layer can be prevented from affecting the flatness of the color resist layer, and the flatness of the color resist layer can be improved. The thickness of the color resist layer can range from 0.5 microns to 10 microns, and further, the thickness can range from 3 microns to 4 microns.

[0103] Step 405: forming a transparent structure layer on the base substrate having the color resist layer formed thereon.

[0104] The transparent structural layer may include a transparent flat layer, which may play a role in flattening and protecting the color resist layer. The transparent flat layer may have a groove on a side away from the base substrate.

[0105] Step 406: Cover the base substrate with the transparent structure layer formed thereon with a light-blocking structure formed thereon, wherein the light-blocking structure is located on a side of the light-blocking cover plate close to the base substrate.

[0106] The side of the light-transmitting cover plate close to the light-blocking structure can be fixedly attached to the side of the transparent flat layer away from the base substrate, so that the light-blocking structure is located in the groove.

[0107] In summary, an embodiment of the present application provides a method for preparing a display panel, which includes: a substrate, a plurality of light-emitting devices, a color resist layer, a transparent structural layer, and a light-blocking structure. The light-blocking structure includes a light-absorbing layer and a light-reflecting layer, and the light-reflecting layer can block part of the external light reflected by some structures on the side of the substrate from the light-reflecting layer to prevent the part of the external light from being absorbed by the light-absorbing layer, and reflect the part of the external light toward the substrate, so that part of the light can pass through the substrate. In this way, without affecting the light-absorbing layer to absorb external light to reduce the reflection effect of the display panel, the light-reflecting layer reflects at least part of the external light reflected by the light-emitting device, and reduces the absorption ratio of the external light entering the display panel by the light-shielding pattern, thereby increasing the light transmittance of the display panel, solving the problem of low light transmittance of the display panel in the related art, and achieving the effect of improving the light transmittance of the display panel.

[0108] Fig. 9 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application. The method can be used to prepare the display panel in the above embodiment. Figure 4 The display panel 20 shown in FIG. Fig. 9 As shown, the method may include:

[0109] Step 501: Obtain a base substrate and a light-transmitting cover plate.

[0110] The substrate and the light-transmitting cover plate can be made of materials such as glass, silicon wafer, quartz or plastic.

[0111] Step 502: Form a plurality of light emitting devices spaced apart from each other on a substrate.

[0112] A pixel defining layer may be formed on the base substrate first, the pixel defining layer may have a plurality of pixel openings, and a plurality of light emitting devices may be located in the pixel openings to form a plurality of light emitting devices with intervals.

[0113] Step 503: forming a light blocking structure on the light-transmitting cover plate.

[0114] Forming a light-blocking structure on a transparent cover plate may include the following four sub-steps:

[0115] 1) A reflective material layer is formed on the light-transmitting cover plate.

[0116] The reflective material layer can be prepared by a silver mirror reaction.

[0117] 2) Performing a patterning process on the reflective material layer to form a reflective layer.

[0118] The patterning process in the embodiment of the present application may include at least one of: photoresist coating, exposure, development, etching and photoresist stripping. The light absorbing layer may be a black matrix or other patterns with light absorbing function, which is not limited in the embodiment of the present application.

[0119] 3) forming a light absorbing material layer on the light-transmitting cover plate having the light-reflecting layer formed thereon.

[0120] The light absorbing material layer may be a black resin or a black paint, and may have a thickness of 1.3 micrometers (μm).

[0121] 4) Performing a patterning process on the light absorbing material layer to form a light absorbing layer to form a light blocking structure.

[0122] The orthographic projection of the light absorbing layer on the base substrate may overlap with the orthographic projection of the light reflecting layer on the base substrate, and the light blocking structure may include the light absorbing layer and the light reflecting layer.

[0123] Step 504: forming a protective film on the light-transmitting cover plate having the light-blocking structure formed thereon.

[0124] The material of the protective film may include polyethylene terephthalate, so that the protective film has good physical and mechanical properties and can provide good protection for the light-blocking structure.

[0125] Step 505: forming a color resist layer on a side of the light emitting device away from the substrate.

[0126] The encapsulation layer can be first formed on the side away from the base substrate, and the color resist layer can be formed on the side of the encapsulation layer away from the base substrate. In this way, the light absorption layer can be prevented from affecting the flatness of the color resist layer, and the flatness of the color resist layer can be improved.

[0127] Step 506: Form a transparent flat layer on the base substrate having the color resist layer formed thereon.

[0128] The transparent flat layer can flatten and protect the color resist layer.

[0129] Step 507 , covering the base substrate with the transparent flat layer with the light-blocking structure formed thereon, wherein the light-blocking structure is located on a side of the light-blocking cover plate away from the base substrate.

[0130] The side of the light-transmitting cover plate away from the light-reflecting layer is fixedly bonded to the side of the transparent flat layer away from the base substrate, wherein the light-transmitting cover plate and the transparent flat layer can constitute a transparent structural layer.

[0131] In summary, an embodiment of the present application provides a method for preparing a display panel, which includes: a substrate, a plurality of light-emitting devices, a color resist layer, a transparent structural layer, and a light-blocking structure. The light-blocking structure includes a light-absorbing layer and a light-reflecting layer, and the light-reflecting layer can block part of the external light reflected by some structures on the side of the substrate from the light-reflecting layer to prevent the part of the external light from being absorbed by the light-absorbing layer, and reflect the part of the external light toward the substrate, so that part of the light can pass through the substrate. In this way, without affecting the light-absorbing layer to absorb external light to reduce the reflection effect of the display panel, the light-reflecting layer reflects at least part of the external light reflected by the light-emitting device, and reduces the absorption ratio of the external light entering the display panel by the light-shielding pattern, thereby increasing the light transmittance of the display panel, solving the problem of low light transmittance of the display panel in the related art, and achieving the effect of improving the light transmittance of the display panel.

[0132] According to another aspect of the present application, a display device is provided, the display device comprising: a power supply component and a display panel, the display panel being the display panel in any of the above embodiments, and the power supply component being used to supply power to the display panel. The display device provided in the embodiment of the present application can be any product or component with a display function, such as a liquid crystal display, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc.

[0133] Optionally, the display device may include an enhanced display device, which includes a display panel with good light transmittance in any of the above embodiments, which can improve the display effect of the augmented reality display device.

[0134] Optionally, the display device may further include: a photosensitive sensor, wherein a light-incoming surface of the photosensitive sensor faces the display panel.

[0135] The term "at least one of A and B" in this application is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, at least one of A and B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0136] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0137] In the present application, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0138] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate substrate; A plurality of light emitting devices disposed at intervals on the substrate; A color resist layer located on a side of the light emitting device away from the substrate, wherein the color resist layer is formed on a side of the light emitting device away from the substrate; A transparent structural layer located on a side of the color resist layer away from the base substrate; a light-blocking structure located on a side of the transparent structure layer away from the base substrate, the light-blocking structure comprising a light-absorbing layer and a light-reflecting layer located on a side of the light-absorbing layer close to the base substrate, the orthographic projection of the light-blocking structure on the base substrate being located between the orthographic projections of the plurality of light-emitting devices disposed at intervals on the base substrate; The display panel further comprises a light-transmitting cover plate, the light-blocking structure is formed on the light-transmitting cover plate, the transparent structure layer is formed on the base substrate on which the color resist layer is formed, the transparent structure layer comprises a transparent flat layer, and the transparent flat layer has a groove on a side away from the base substrate; the light-transmitting cover plate on which the light-blocking structure is formed is covered on the base substrate on which the transparent structure layer is formed, the light-blocking structure is located on a side of the light-transmitting cover plate close to the base substrate, and the light-blocking structure is located in the groove; Alternatively, the transparent structural layer includes a transparent flat layer and a light-transmitting cover plate, the light-blocking structure is formed on the light-transmitting cover plate, the transparent flat layer is formed on a base substrate on which the color resist layer is formed, the light-transmitting cover plate on which the light-blocking structure is formed is covered on the base substrate on which the transparent flat layer is formed, and the light-blocking structure is located on a side of the light-transmitting cover plate away from the base substrate.

2. The display panel according to claim 1, characterized in that: When the transparent structure layer includes a transparent flat layer and a transparent cover plate, the transparent flat layer is located on a side of the transparent cover plate close to the base substrate, and the display panel also includes a protective film, which is located on a side of the light blocking structure away from the base substrate.

3. The display panel according to claim 2, characterized in that: The thickness of the protective film is greater than the thickness of the light blocking structure.

4. The display panel according to claim 1, characterized in that: The orthographic projection of the light reflecting layer on the base substrate overlaps with the orthographic projection of the light absorbing layer on the base substrate.

5. The display panel according to claim 1, characterized in that: The base substrate has a light-transmitting display area and a conventional display area. The size of the light-blocking structure in the light-transmitting display area is smaller than that in the conventional display area. The size of the light-blocking structure is the size of the light-blocking structure in the direction of the shortest connection line between two adjacent light-emitting devices.

6. The display panel according to claim 5, characterized in that: The size of the light blocking structure in the light-transmitting display area is 10% to 60% of the spacing distance between two adjacent light-emitting devices.

7. The display panel according to claim 1, characterized in that: The light emitting device comprises a first electrode, a light emitting material layer and a second electrode which are sequentially stacked in a direction away from the base substrate; Wherein, the side of the first electrode away from the base substrate is a reflective metal layer; The second electrode is a semi-transmissive and semi-reflective layer.

8. The display panel according to claim 1, characterized in that: The materials of the light reflecting layer include silver and copper.

9. A method for preparing a display panel, characterized in that: include: forming a plurality of light emitting devices spaced apart from each other on a base substrate; A stacked color resist layer, a transparent structure layer and a light blocking structure are arranged on the side of the light emitting device away from the base substrate, the light blocking structure comprises a light absorbing layer and a light reflecting layer located on the side of the light absorbing layer close to the base substrate, and the orthographic projection of the light blocking structure on the base substrate is located between the orthographic projections of the plurality of light emitting devices arranged at intervals on the base substrate; forming the light blocking structure on the light-transmitting cover plate; Forming the color resist layer on a side of the light emitting device away from the substrate; The transparent structure layer is formed on the base substrate on which the color resist layer is formed, wherein the transparent structure layer includes a transparent flat layer, and a side of the transparent flat layer away from the base substrate has a groove; a light-transmitting cover plate formed with the light-blocking structure is covered on the base substrate on which the transparent structure layer is formed, wherein the light-blocking structure is located on a side of the light-transmitting cover plate close to the base substrate, and the light-blocking structure is located in the groove; Alternatively, a transparent flat layer is formed on the base substrate on which the color resist layer is formed; a light-transmitting cover plate on which the light-blocking structure is formed is covered on the base substrate on which the transparent flat layer is formed, the light-transmitting cover plate and the transparent flat layer constitute the transparent structural layer, and the light-blocking structure is located on a side of the light-transmitting cover plate away from the base substrate.

10. A display device, characterized in that: The display device comprises: a power supply component and a display panel, the display panel is the display panel according to any one of claims 1 to 8, and the power supply component is used to supply power to the display panel.

11. The display device according to claim 10, characterized in that: The display device further includes a light-sensitive sensor, wherein a light-incoming surface of the light-sensitive sensor faces the display panel.

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