Display panel, method for manufacturing display panel, and display device

Abstract

The embodiments of the present application provide a display panel, a method for manufacturing a display panel, and a display device. The display panel includes a first display area and a second display area. The first display area and the second display area both include a base substrate, a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, an encapsulation layer, a black matrix, and a color filter layer. The pixel definition layer has multiple openings, and the light-emitting units of the light-emitting layer are arranged in the openings; the second display area includes multiple light-transmitting holes and a light-blocking layer arranged in the pixel definition layer; the encapsulation layer includes at least a first inorganic encapsulation layer and a second inorganic encapsulation layer arranged in sequence in a direction away from the base substrate; the light-blocking layer is arranged on a side of the first inorganic encapsulation layer and / or the second inorganic encapsulation layer away from the base substrate, and is arranged corresponding to the black matrix, and the orthographic projection of the light-blocking layer on the pixel definition layer at least covers a portion of the pixel definition layer; the light-blocking layer is used to block the emission of reflected light from the surface of the first electrode layer and / or the second electrode layer.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) is a type of spontaneous luminescence that does not require a backlight to stimulate luminescence. It has many advantages, such as low driving voltage (DC drive), active luminescence, wide viewing angle, high efficiency, fast response speed, and easy realization of full-color large-area wall-mounted display and flexible display. It also has the advantages of low manufacturing cost and low power consumption, and will become more and more popular.

[0003] In a display panel, the display area can be divided into a conventional display area and a functional sensor display area based on its function. For example, the functional sensor display area used to implement an under-screen fingerprint sensor requires light-sensing functionality by providing light-transmitting holes in the pixel definition layer of the functional sensor display area to allow light with a longer wavelength to pass through. Therefore, when the luminescent material in the display panel emits light, the brightness of the functional sensor display area is higher than that of the conventional display area, resulting in uneven brightness across the display panel. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a display panel, a method for manufacturing a display panel, and a display device to solve the problem of uneven light when the display panel is in a bright state.

[0005] An embodiment of the first aspect of the present application provides a display panel, which includes a first display area and a second display area, wherein the first display area is arranged around the second display area, and the second display area is a functional sensor display area; the first display area and the second display area both include: a base substrate and a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, an encapsulation layer, a black matrix and a color filter layer sequentially arranged on one side of the base substrate, the pixel definition layer having a plurality of openings, and each light-emitting unit of the light-emitting layer is arranged in the opening; the second display area also includes a plurality of light-transmitting holes and a light-blocking layer arranged in the pixel definition layer; wherein the encapsulation layer includes at least a first inorganic encapsulation layer and a second inorganic encapsulation layer sequentially arranged in a direction away from the base substrate; the light-blocking layer is arranged on a side of the first inorganic encapsulation layer and / or the second inorganic encapsulation layer away from the base substrate, and is arranged one-to-one with the black matrix, and the orthographic projection of the light-blocking layer on the pixel definition layer at least covers a portion of the pixel definition layer; the light-blocking layer is used to block the emission of reflected light from the surface of the first electrode layer and / or the second electrode layer.

[0006] In some embodiments, the light blocking layer is disposed on a side of the first inorganic encapsulation layer away from the base substrate, and an orthographic projection of the light blocking layer on the pixel definition layer completely covers the pixel definition layer.

[0007] In some embodiments, the light shielding layer has a lower light transmittance than the first inorganic encapsulation layer and the pixel definition layer.

[0008] In some embodiments, the light blocking layer is disposed on a side of the second inorganic encapsulation layer away from the base substrate, and an orthographic projection of the light blocking layer on the pixel definition layer covers a top surface of the pixel definition layer.

[0009] In some embodiments, the light shielding layer has a light transmittance lower than light transmittances of the second inorganic encapsulation layer, the first inorganic encapsulation layer, and the pixel definition layer.

[0010] In some embodiments, the differences between the transmittance of the light blocking layer and the transmittances of the first inorganic encapsulation layer, the second inorganic encapsulation layer, and the pixel definition layer are 0.1-0.2, respectively.

[0011] In some embodiments, a plurality of the light-emitting units are arranged periodically, and one light-transmitting hole is provided in each arrangement period, so that the light-transmitting holes are arranged periodically.

[0012] In some embodiments, the light-transmitting area of ​​the light-transmitting hole is smaller than the light-transmitting area of ​​the opening.

[0013] In some embodiments, the encapsulation layer further includes an organic encapsulation layer located between the first inorganic encapsulation layer and the second inorganic encapsulation layer; a touch electrode layer is provided on a side of the second inorganic encapsulation layer close to the color filter layer.

[0014] An embodiment of a second aspect of the present application provides a method for manufacturing a display panel, which is used to manufacture any of the display panels described above, comprising the following steps:

[0015] Sequentially forming a first electrode layer and a pixel definition layer in a first display area and a second display area on one side of a base substrate;

[0016] Making openings in the pixel definition layer of the first display area and the second display area, and making light-transmitting holes in the pixel definition layer of the second display area;

[0017] Disposing light-emitting units in the openings of the first display area and the second display area to form a light-emitting layer;

[0018] A second electrode layer and an encapsulation layer are sequentially fabricated on a side of the pixel definition layer in the first display area and the second display area away from the base substrate, the encapsulation layer comprising at least a first inorganic encapsulation layer and a second inorganic encapsulation layer, and a light-blocking layer is provided on a side of the first inorganic encapsulation layer and the second inorganic encapsulation layer in the second display area away from the base substrate, the light-blocking layer covering at least a portion of the pixel definition layer in its orthographic projection; the light-blocking layer is used to block the emission of reflected light from the surface of the first electrode layer and / or the second electrode layer; a black matrix and a color filter layer are provided on a side of the encapsulation layer in the first display area and the second display area away from the base substrate, the light-blocking layer being provided in a one-to-one correspondence with the black matrix.

[0019] An embodiment of a third aspect of the present application provides a display device, comprising any one of the display panels described.

[0020] In an embodiment of the present application, the first display area is a conventional display area, and the second display area is a functional sensor display area. The functional sensor display area can be a light sensor display area, that is, a light sensor is provided in the second display area, and the light sensor is used to sense the brightness of light at the position where the display panel is located, so that the second display area has the function of automatically adjusting the screen brightness of the display panel according to the brightness of the surrounding environment, bringing the best visual effect to the user. Different light sensors have different transmittance requirements, so a light-transmitting hole is provided in the pixel definition layer of the second display area, which can meet the transmittance requirements for the second display area, so that the light function sensor can obtain light from the external environment of the display panel through the display panel. The light-emitting unit in the opening in the pixel definition layer is a light-emitting material, and the light-emitting unit can emit light by applying voltage to the first electrode layer and the second electrode layer, thereby making the display panel emit light.

[0021] Since the direction of the light emitted by the light-emitting unit is toward the surroundings of the light-emitting unit, when the light is transmitted to the first electrode layer and / or the second electrode layer or other metal layers in the display panel, the reflected light may be projected onto the surface of the display panel through the light-transmitting holes in the pixel definition layer. Since the first display area is not provided with a light-transmitting hole, the reflected light of the light-emitting material located in the first display area will not be projected onto the surface of the display panel through the light-transmitting hole. When too much reflected light from the second display area is projected onto the surface of the display panel, the brightness value of the first display area will be lower than the brightness value of the second display area, thereby causing uneven light when the display panel is in a bright state. The provision of the light-blocking layer in the embodiment of the present application can absorb the light reflected by the first electrode layer or the second electrode layer, so that the reflected light cannot pass through the light-transmitting hole, thereby achieving the adaptation of the brightness values ​​of the first display area and the second display area. Reduce the uneven light phenomenon when the display panel is in a bright state.

[0022] Of course, it is not necessary to achieve all the advantages described above at the same time when implementing any product or method of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0024] Figure 1 is a structural diagram of a display panel;

[0025] Figure 2 is a schematic structural diagram of the second display area of ​​a display panel in the prior art;

[0026] Figure 3 It is a schematic structural diagram of a display panel including a first light path in the prior art;

[0027] Figure 4 It is a schematic structural diagram of a display panel including a second optical path in the prior art;

[0028] Figure 5 Schematic diagram of the structure of a display panel including the third light path in the prior art;

[0029] Figure 6 A schematic diagram of a first structure of the second display area of ​​the display panel provided in an embodiment of the present application;

[0030] Figure 7 A schematic diagram of a second structure of the second display area of ​​the display panel provided in an embodiment of the present application;

[0031] Figure 8 This is a schematic diagram of a third structure of the second display area of ​​the display panel provided in an embodiment of the present application.

[0032] Reference numerals:

[0033] First display area 10; second display area 20; base substrate 21; metal traces 210; first electrode layer 22; pixel definition layer 23; opening 231; light-transmitting hole 232; light-emitting unit 24; second electrode layer 25; first inorganic encapsulation layer 261; second inorganic encapsulation layer 262; organic encapsulation layer 263; touch electrode layer 264; touch electrode 2641; black matrix 27; color filter layer 28; color resist block 28a; protective layer 281; first buffer layer 282; second buffer layer 283; organic planarization layer 284; light-blocking layer 29. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of this application.

[0035] like Figure 1 As shown, the display panel generally includes a first display area 10 and a second display area 20. The first display area 10 is arranged around the second display area 20, and the second display area 20 is a functional sensor display area.

[0036] In the prior art, when the luminescent material in the display panel emits light, the brightness of the functional sensor display area is higher than that of the regular display area, which in turn causes uneven brightness across the display panel. The inventors of this application have discovered that the uneven brightness across the display panel is caused by the structural differences between the functional sensor display area and the regular display area.

[0037] The structural diagram of the display panel in the prior art is as follows: Figure 2 As shown, since the direction of the light emitted by the light emitting unit 24 is toward the surroundings of the light emitting unit 24, as shown in FIG. Figures 3 to 5 As shown, when light is transmitted to the first electrode layer 22 and / or the second electrode layer 25 or other metal layers in the display panel, the reflected light is not only reflected to the surface of the display panel through the color block 28a area of ​​the color filter layer 28, but is also projected to the surface of the display panel through the light-transmitting holes 232 of the pixel definition layer 23. However, since the first display area 10 is not provided with the light-transmitting holes 232, the amount of light emitted by the light-emitting units 24 in the first display area 10 that can be transmitted from the surface of the display panel is relatively small. However, due to the presence of the light-transmitting holes 232 in the second display area 20, the reflected light is excessively transmitted through the light-transmitting holes 232. Therefore, the brightness value of the first display area 10 is lower than that of the second display area 20, which leads to light unevenness when the display panel is in the bright state.

[0038] To solve the problem of uneven light when the display panel is bright, such as Figure 1 、 Figures 6 to 8 As shown, the embodiment of the first aspect of the present application provides a display panel, which includes a first display area 10 and a second display area 20. Figure 1As shown, the first display area 10 is arranged around the second display area 20, and the second display area 20 is a functional sensor display area; the first display area 10 and the second display area 20 both include: a base substrate 21 and a first electrode layer 22, a pixel definition layer 23, a light-emitting layer, a second electrode layer 25, an encapsulation layer (261, 262 and 263 in the figure), a black matrix 27 and a color filter layer 28 arranged on one side of the base substrate 21 in sequence, the pixel definition layer 23 has a plurality of openings 231, and each light-emitting unit 24 of the light-emitting layer is arranged in the opening 231; the second display area 20 also includes a first electrode layer 22, a pixel definition layer 23, a light-emitting layer, a second electrode layer 25, an encapsulation layer (261, 262 and 263 in the figure), a black matrix 27 and a color filter layer 28 ... 25, a second electrode layer 25, an encapsulation layer (261, 262 and 263 in the figure), a black matrix 27 and a color filter layer 28, the pixel 23 has multiple light-transmitting holes 232 and a light-blocking layer 29; wherein the encapsulation layer at least includes a first inorganic encapsulation layer 261 and a second inorganic encapsulation layer 262 arranged in sequence along the direction away from the base substrate 21; the light-blocking layer 29 is arranged on the side of the first inorganic encapsulation layer 261 and / or the second inorganic encapsulation layer 262 away from the base substrate 21, and is arranged one-to-one with the black matrix 27, and the positive projection of the light-blocking layer 29 on the pixel definition layer 23 at least covers a part of the pixel definition layer 23; the light-blocking layer 29 is used to block the emission of reflected light from the surface of the first electrode layer 22 and / or the second electrode layer 25.

[0039] In the embodiments of this application, Figure 1 As shown, the first display area 10 is a conventional display area, and the second display area 20 is a functional sensor display area. The functional sensor display area can be a light sensor display area, that is, a light sensor is provided in the second display area 20, and the light sensor is used to sense the brightness of the light at the location of the display panel, so that the second display area 20 has the function of automatically adjusting the screen brightness of the display panel according to the brightness of the surrounding environment, bringing the best visual effect to the user. Different light sensors have different transmittance requirements, so a light-transmitting hole 232 is provided in the pixel definition layer 23 of the second display area 20, which can meet the transmittance requirements of the second display area 20, so that the light function sensor can obtain the light of the external environment of the display panel. The light-emitting unit 24 in the opening 231 in the pixel definition layer 23 is a light-emitting material. The light-emitting unit 24 can emit light by applying voltage to the first electrode layer 22 and the second electrode layer 25, thereby making the display panel emit light.

[0040] like Figures 6 to 8 As shown, the light blocking layer 29 in the embodiment of the present application can absorb the light reflected by the first electrode layer 22 or the second electrode layer 25, so that the reflected light cannot reach the light-transmitting hole 232, thereby achieving the adaptation of the brightness values ​​of the first display area 10 and the second display area 20, and reducing the light unevenness phenomenon when the display panel is in the bright state.

[0041] Further, such as Figures 6 to 8As shown, a metal trace 210 can be set on the upper surface of the base substrate 21, and the metal trace 210 is connected to the first electrode layer 22. A voltage is applied to the first electrode layer 22, and the working state of the first electrode layer 22 is controlled by the metal trace 210, thereby controlling the light-emitting state of each light-emitting unit 24 corresponding to the first electrode layer 22.

[0042] Specifically, such as Figures 6 to 8 As shown, the light-emitting layer is located between the first electrode layer 22 and the second electrode layer 25, the first electrode layer 22 is the cathode layer, the second electrode layer 25 is the anode layer, or the first electrode layer 22 is the anode layer, the second electrode layer 25 is the cathode layer, and a voltage is applied to the first electrode layer 22 and the second electrode layer 25 through the metal wiring 210, so that a potential difference is formed in the light-emitting unit 24 located between the first electrode layer 22 and the second electrode layer 25, so that the light-emitting material in the light-emitting unit 24 emits light, thereby causing the display panel to emit light.

[0043] The materials of the first electrode layer 22 and the second electrode layer 25 may include metals such as Mg, Ca, Li, or Al, or alloys thereof, or metal oxides such as IZO and ZTO, or conductive organic materials such as PEDOT / PSS (poly(3,4-ethylenedioxythiophene) / polystyrene sulfonate). The material of the light-emitting layer can be selected to emit a specific color (e.g., red, blue, or green) as required.

[0044] Specifically, such as Figures 6 to 8 As shown, the color filter layer 28 includes a plurality of color blocks 28a. The color blocks 28a are arranged in a one-to-one correspondence with the light-emitting units 24. The light of the corresponding color emitted by the light-emitting units 24 can pass through the color blocks 28a. The black matrix 27 is located at both ends of the color blocks 28a to prevent crosstalk between adjacent light-emitting units 24.

[0045] The light-transmitting hole 232 can be made by etching or mechanical cutting.

[0046] Specifically, the pixel definition layer 23 is formed using PDL (pixel definition layer) glue, and is then etched according to patterning to form openings 231 for accommodating the light emitting units 24 , thereby finally forming a patterned pixel definition layer 23 .

[0047] The base substrate 21 may be a glass substrate, which plays a supporting role in the display panel to facilitate deposition of functional layers on the base substrate 21. It may be a flexible substrate made of a flexible material such as polyimide (PI), which is conducive to realizing flexible display.

[0048] In practical applications, the light shielding layer 29 can be arranged in at least three ways:

[0049] In the first type, the light shielding layer 29 is disposed on a side of the first inorganic encapsulation layer 261 away from the base substrate 21 , and the orthographic projection of the light shielding layer 29 on the pixel definition layer 23 completely covers the pixel definition layer 23 .

[0050] In the first embodiment of the present application, Figure 6 As shown, the shape of the first inorganic encapsulation layer 261 is adapted to the shape of the pixel definition layer 23, and the shape of the light shielding layer 29 is adapted to the shape of the pixel definition layer 23. The light shielding layer 29 is attached to the surface of the first inorganic encapsulation layer 261, and the light shielding layer 29 covers the top surface layer of the pixel definition layer 23 and the side wall of the pixel definition layer 23 near the opening 231, thereby achieving complete coverage of the pixel definition layer 23 by the light shielding layer 29. When the reflected light is as Figure 6 As shown, when the reflected light passes through the pixel definition layer 23 and the first inorganic encapsulation layer 261 and reaches the light blocking layer 29, it can be absorbed by the light blocking layer 29, thereby reducing the amount of light reflected to the light-transmitting hole 232, thereby achieving the purpose of reducing the transmittance at the light-transmitting hole 232, making the brightness value of the second display area 20 adapt to that of the first display area 10, and thus making the brightness of the display panel more uniform when in the bright state.

[0051] In the embodiment of the present application, the light blocking layer 29 completely covers the portion of the pixel definition layer 23 except the opening 231 and the light-transmitting hole 232, so that the light blocking layer 29 can better absorb the light reflected by the first electrode layer 22 or the second electrode layer 25, thereby reducing the brightness value of the second display area 20.

[0052] In some embodiments of the present application, the light transmittance of the light blocking layer 29 is lower than the light transmittance of the first inorganic encapsulation layer 261 and the pixel definition layer 23 .

[0053] In the embodiment of the present application, when light is reflected and passes through the first inorganic encapsulation layer 261 , the reflected light cannot pass through the light blocking layer 29 due to the low light transmittance of the light blocking layer 29 .

[0054] Specifically, the material of the light-blocking layer 29 can be a patternable inorganic material such as molybdenum oxide, or the material of the light-blocking layer 29 can be a patternable organic material. For example, the organic material can be a low-transmittance material or composite (POM, PA, ABS, HIPS, PPO, etc.) reinforced with carbon black, and a corresponding pattern can be formed by coating / exposure / development.

[0055] The second type, such as Figure 7 As shown, the light shielding layer 29 is disposed on a side of the second inorganic encapsulation layer 262 away from the base substrate 21 , and the orthographic projection of the light shielding layer 29 on the pixel definition layer 23 covers the top surface of the pixel definition layer 23 .

[0056] In the embodiments of this application, Figure 7 As shown, the light shielding layer 29 of the second embodiment of the present application is arranged on one side of the second inorganic encapsulation layer 262. When the light emitted by the light emitting unit 24 passes through the light shielding layer 29, it can be absorbed by the light shielding layer 29. Figure 4 In the display panel shown in FIG. 1 , in which the light shielding layer 29 is not provided, when the light emitted by the light emitting unit 24 is transmitted along the path shown in FIG. Figure 4 When the light path shown is emitted ( Figure 4 The light path shown is Figure 7 The light path is the same as that shown in FIG. 2 ), and is transmitted through the light-transmitting hole 232 .

[0057] Furthermore, in order for the light shielding layer 29 to absorb more reflected light, the length of the light shielding layer 29 along the width of the display panel is the length between the two ends of the black matrix 27 and the two ends of the corresponding pixel definition layer 23.

[0058] The third type, such as Figure 8 As shown, the light blocking layer 29 of the third embodiment of the present application is respectively arranged on the side of the first inorganic packaging layer 261 away from the base substrate 21 and the side of the second inorganic packaging layer 262 away from the base substrate 21, which can block the light reflected by the first electrode layer 22, the second electrode layer 25 and the metal trace 210, and can better reduce the transmitted light at the light-transmitting hole 232.

[0059] In some embodiments of the present application, the light transmittance of the light blocking layer 29 is lower than the light transmittances of the second inorganic encapsulation layer 262 , the first inorganic encapsulation layer 261 , and the pixel definition layer 23 .

[0060] In the embodiment of the present application, because the light blocking layer 29 has a low transmittance, the reflected light passing through the second inorganic encapsulation layer 262, the first inorganic encapsulation layer 261 and the pixel definition layer 23 can be absorbed to prevent the reflected light from reaching the surface of the display panel.

[0061] In some embodiments of the present application, the differences between the transmittance of the light blocking layer 29 and the transmittance of the first inorganic encapsulation layer 261 , the second inorganic encapsulation layer 262 and the pixel definition layer 23 are 0.1-0.2, respectively.

[0062] In an embodiment of the present application, in actual application, since the light blocking layer 29 can absorb reflected light in multiple directions reflected by the first electrode layer 22, the second electrode layer 25 and the metal wiring 210, including not only the light reflected to the light-transmitting hole 232, but also the light reflected on each color resist block 28a, in order to prevent the light blocking layer 29 from absorbing too much light and causing the brightness of the display panel to be insufficient, the difference between the transmittance of the light blocking layer 29 and the first inorganic encapsulation layer 261, the second inorganic encapsulation layer 262 and the pixel definition layer 23 cannot be too large. Specifically, the difference can be set to 0.1-0.2, for example, the difference can be 0.1, 0.12, 0.15, 0.17, 0.2, so that the light blocking layer 29 can reduce the light reflected to the light-transmitting hole 232, but will not significantly reduce the brightness of the display panel.

[0063] In some embodiments of the present application, a plurality of light-emitting units 24 are arranged periodically, and a light-transmitting hole 232 is provided in each arrangement period, so that the light-transmitting holes 232 are arranged periodically.

[0064] In the embodiment of the present application, the light-transmitting holes 232 are arranged in the same period as the light-emitting units 24. For example, a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit are used as a pixel unit period, and a light-transmitting hole 232 is provided in each period, so that the aperture ratio in each pixel unit period of the second display area 20 remains consistent, so that the display of the second display area 20 is more uniform.

[0065] In some embodiments of the present application, the light-transmitting area of ​​the light-transmitting hole 232 is smaller than the light-transmitting area of ​​the opening 231 .

[0066] In the embodiment of the present application, since the area of ​​the pixel definition layer 23 that can be used to make the opening 231 and the light-transmitting hole 232 is fixed, the smaller the light-transmitting area occupied by the light-transmitting hole 232, the larger the area used for the opening 231, which has a smaller impact on the aperture ratio of the display panel, thereby making the light-emitting area of ​​the light-emitting unit 24 larger, which is beneficial to improving the display effect of the display panel.

[0067] Specifically, the diameter of the minimum circumscribed circle of the area corresponding to the light-transmitting hole 232 is within a range of 0.5 microns to 20 microns. While maintaining light transmission performance, the smaller the light-transmitting hole 232, the more uniform the brightness of the display panel. For example, the diameter is 0.5 microns, 1 micron, 3 microns, 5 microns, 7 microns, 9 microns, 11 microns, 13 microns, 15 microns, 7 microns, 19 microns, and 20 microns. Preferably, the diameter can be 2-4 microns.

[0068] In some embodiments of the present application, Figures 6 to 8As shown, the encapsulation layer further includes an organic encapsulation layer 263 located between the first inorganic encapsulation layer 261 and the second inorganic encapsulation layer 262 ; a touch electrode layer 264 is provided on one side of the second inorganic encapsulation layer 262 close to the color filter layer 28 .

[0069] In an embodiment of the present application, a touch electrode 2641 is provided on the touch electrode layer 264, which is used to enable the display screen to have a touch operation function, that is, the user does not need to rely on a keyboard and a mouse, but can operate the device by lightly touching the display screen, making human-computer interaction more direct and making the electronic device with a touch display screen more portable. The touch electrode layer 264 can be made of metal materials such as copper, aluminum, titanium, and cobalt. For example, it can be formed into a single-layer structure or a multi-layer structure, such as titanium / aluminum / titanium, molybdenum / aluminum / molybdenum and other multi-layer structures.

[0070] Further, such as Figures 6 to 8 As shown, the display panel further includes an organic planarization layer 284, which is located between the pixel definition layer 23 and the base substrate 21. The organic planarization layer 284 can reduce severe surface undulations and make the interlayer dielectric flatter. The planarization layer can be made of organic insulating materials such as polyimide.

[0071] Furthermore, the display panel also includes a first buffer layer 282 located between the second inorganic encapsulation layer 262 and the touch electrode layer 264, and a second buffer layer 283 located between the touch electrode layer 264 and the color filter layer 28. In the embodiment of the present application, the first buffer layer 282 and the second buffer layer 283 can be made of inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride.

[0072] Specifically, a protective layer 281 is provided on the side of the color filter layer 28 away from the base substrate 21 to protect functional layers in the display panel, such as the touch electrode layer 264 , the pixel definition layer 23 and the light shielding layer 29 .

[0073] Specifically, the encapsulation layer is a composite encapsulation layer, including a first inorganic encapsulation layer 261, an organic encapsulation layer 263, and a second inorganic encapsulation layer 262 stacked in sequence. The first inorganic encapsulation layer 261 and the second inorganic encapsulation layer 262 can be formed of inorganic materials such as silicon nitride, silicon oxide, and silicon oxynitride, and the organic encapsulation layer 263 can be formed of organic materials such as polyimide (PI) and epoxy resin. This composite encapsulation layer can provide multiple protections for the functional structures on the display panel, providing a better encapsulation effect. The embodiments of the present disclosure do not specifically limit the materials of the various functional structures on the display panel.

[0074] An embodiment of a second aspect of the present application provides a method for manufacturing a display panel, which is used to manufacture any display panel, comprising the following steps:

[0075] S1: On one side of the base substrate 21, a first electrode layer 22 and a pixel definition layer 23 of the first display area 10 and the second display area 20 are sequentially manufactured.

[0076] S2 : forming openings 231 in the pixel definition layer 23 of the first display area 10 and the second display area 20 , and forming light-transmitting holes 232 in the pixel definition layer 23 of the second display area 20 .

[0077] S3: Light-emitting units 24 are arranged in the openings 231 of the first display area 10 and the second display area 20 to form a light-emitting layer.

[0078] S4: A second electrode layer 25 and an encapsulation layer are sequentially fabricated on the side of the pixel definition layer 23 of the first display area 10 and the second display area 20 away from the base substrate 21, the encapsulation layer includes at least a first inorganic encapsulation layer 261 and a second inorganic encapsulation layer 262, and a light blocking layer 29 is provided on the side of the first inorganic encapsulation layer 261 and the second inorganic encapsulation layer 262 of the second display area 20 away from the base substrate 21, the orthographic projection of the light blocking layer 29 on the pixel definition layer 23 at least covers a portion of the pixel definition layer 23; the light blocking layer 29 is used to block the emission of reflected light from the surface of the first electrode layer 22 and / or the second electrode layer 25.

[0079] S5: A black matrix 27 and a color filter layer 28 are provided on the side of the encapsulation layer of the first display area 10 and the second display area 20 away from the base substrate 21 , and a light shielding layer 29 is provided in a one-to-one correspondence with the black matrix 27 .

[0080] In the embodiment of the present application, the structure of the display panel obtained by the manufacturing method provided by the embodiment of the present invention can be referred to Figures 6 to 8 As shown. The light blocking layer 29 can absorb the light reflected by the first electrode layer 22 or the second electrode layer 25, so that the reflected light cannot reach the light-transmitting hole 232, thereby achieving the brightness value adaptation of the first display area 10 and the second display area 20, and reducing the light unevenness phenomenon when the display panel is in the bright state. Among them, the process of the encapsulation layer can use a patternable organic material or inorganic material, and adopt organic inkjet printing, spin coating, atomic layer deposition, chemical vapor deposition and other processes to complete the display panel for one-time film formation.

[0081] An embodiment of a third aspect of the present application provides a display device, comprising any one of the display panels.

[0082] In an embodiment of the present application, in a display device including any of the above-mentioned display panels, the light blocking layer 29 can be provided to absorb light reflected by the first electrode layer 22 or the second electrode layer 25, so that the reflected light cannot reach the light-transmitting hole 232, thereby achieving the brightness value adaptation of the first display area 10 and the second display area 20 in the display device. This reduces the uneven light phenomenon when the display panel is in a bright state. Specifically, the display device may include: a computer monitor, a television, a billboard, a laser printer with a display function, a telephone, a mobile phone, a personal digital assistant (PDA), a laptop computer, a digital camera, a camcorder, a viewfinder, a vehicle, a large-area wall, a theater screen or a stadium sign, etc.

[0083] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0084] Each embodiment in this specification is described in a related manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For related parts, refer to the description of the method embodiment.

[0085] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a first display area and a second display area, the first display area is arranged around the second display area, and the second display area is a functional sensor display area; The first display area and the second display area each include: a base substrate and a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, an encapsulation layer, a black matrix, and a color filter layer sequentially arranged on one side of the base substrate, wherein the pixel definition layer has a plurality of openings, and each light-emitting unit of the light-emitting layer is arranged in the openings; the second display area further includes a plurality of light-transmitting holes and a light-blocking layer arranged in the pixel definition layer; Wherein, the encapsulation layer at least comprises a first inorganic encapsulation layer and a second inorganic encapsulation layer sequentially arranged in a direction away from the substrate; The light blocking layer is arranged on the side of the first inorganic packaging layer and / or the second inorganic packaging layer away from the base substrate, and is arranged one-to-one with the black matrix. The orthographic projection of the light blocking layer on the pixel definition layer at least covers a portion of the pixel definition layer; the light blocking layer is used to block the emission of reflected light from the surface of the first electrode layer and / or the second electrode layer.

2. The display panel according to claim 1, wherein: The light shielding layer is disposed on a side of the first inorganic encapsulation layer away from the base substrate, and an orthographic projection of the light shielding layer on the pixel definition layer completely covers the pixel definition layer.

3. The display panel according to claim 2, wherein: The light shielding layer has a light transmittance lower than that of the first inorganic encapsulation layer and the pixel definition layer.

4. The display panel according to claim 1, wherein: The light shielding layer is provided on a side of the second inorganic encapsulation layer away from the base substrate, and the orthographic projection of the light shielding layer on the pixel definition layer covers the top surface of the pixel definition layer.

5. The display panel according to claim 4, wherein: The light shielding layer has a light transmittance lower than that of the second inorganic encapsulation layer, the first inorganic encapsulation layer, and the pixel definition layer.

6. The display panel according to claim 1, wherein: The differences between the transmittance of the light blocking layer and the transmittance of the first inorganic encapsulation layer, the second inorganic encapsulation layer and the pixel definition layer are 0.1-0.2 respectively.

7. The display panel according to any one of claims 1 to 6, characterized in that: The plurality of light-emitting units are arranged periodically, and one light-transmitting hole is provided in each arrangement period, so that the light-transmitting holes are arranged periodically.

8. The display panel according to any one of claims 1 to 6, wherein: The light transmission area of ​​the light transmission hole is smaller than the light transmission area of ​​the opening.

9. The display panel according to any one of claims 1 to 6, characterized in that: The encapsulation layer further includes an organic encapsulation layer located between the first inorganic encapsulation layer and the second inorganic encapsulation layer; a touch electrode layer is provided on a side of the second inorganic encapsulation layer close to the color filter layer.

10. A method for manufacturing a display panel, for manufacturing the display panel according to any one of claims 1 to 9, characterized in that: There are some steps involved: Sequentially forming a first electrode layer and a pixel definition layer in a first display area and a second display area on one side of a base substrate; Making openings in the pixel definition layer of the first display area and the second display area, and making light-transmitting holes in the pixel definition layer of the second display area; Disposing light-emitting units in the openings of the first display area and the second display area to form a light-emitting layer; A second electrode layer and an encapsulation layer are sequentially formed on a side of the pixel definition layer in the first display area and the second display area away from the base substrate, the encapsulation layer comprising at least a first inorganic encapsulation layer and a second inorganic encapsulation layer, and a light-blocking layer is provided on a side of the first inorganic encapsulation layer and the second inorganic encapsulation layer in the second display area away from the base substrate, the orthographic projection of the light-blocking layer covering at least a portion of the pixel definition layer; the light-blocking layer is used to block the emission of reflected light from the surface of the first electrode layer and / or the second electrode layer; A black matrix and a color filter layer are provided on a side of the encapsulation layer in the first display area and the second display area away from the base substrate, and the light shielding layer is provided in a one-to-one correspondence with the black matrix.

11. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

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