Display panel and display device

Abstract

The utility model discloses a display panel and a display device, relates to the technical field of display, and can avoid spectrum change caused by water vapor and improve the display effect. The display panel comprises a driving substrate, wherein the driving substrate comprises a substrate layer and a driving layer, and the driving layer is arranged on one side of the substrate layer; the light-emitting device layer is arranged on the side, away from the substrate layer, of the driving layer, the light-emitting device layer comprises a pixel defining layer and a light-emitting layer, the pixel defining layer comprises a plurality of pixel openings, and the light-emitting layer is arranged at the pixel openings; the supporting layer is arranged on the side, away from the substrate layer, of the pixel defining layer, and the first packaging layer is arranged on the sides, away from the substrate layer, of the light-emitting device layer and the supporting layer; the first light filtering layer is arranged between the first packaging layer and the second packaging layer, the orthographic projection of the first light filtering layer on the substrate layer covers the orthographic projection of the first hollowed-out part and the pixel opening on the substrate layer, and the refractive index of the first light filtering layer is larger than that of the first packaging layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] At present, display devices with the advantages of large generation line production capacity and low cost are widely used in many fields such as television, computer and mobile phone. With the rise of display technologies such as LCD (Liquid Crystal Display) and OLED (Organic Light Emitting Semiconductor), improving the brightness of the display screen is one of the important factors to improve the user experience, therefore, it is very important to improve the display effect of the display. However, in the prior art, the light loss of the display is serious at a large viewing angle, which results in low brightness of the display screen and affects the display effect. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application provide a display panel and a display device, which can improve the forward light output of the display panel and improve the display effect.

[0004] In a first aspect, the present application provides a display panel, comprising:

[0005] a driving substrate, the driving substrate comprising a substrate layer and a driving layer, the driving layer being disposed on one side of the substrate layer;

[0006] a light emitting device layer, disposed on a side of the driving layer away from the substrate layer, the light emitting device layer comprising a pixel defining layer and a light emitting layer, the pixel defining layer comprising a plurality of pixel openings, the light emitting layer being disposed in the pixel openings;

[0007] a support layer, disposed on a side of the pixel defining layer away from the substrate layer, the support layer comprising a plurality of first hollows, a normal projection of the first hollows on the substrate layer covering a normal projection of the pixel openings on the substrate layer;

[0008] a first encapsulation layer, disposed on a side of the light emitting device layer and the support layer away from the substrate layer;

[0009] a first filter layer, disposed on a side of the first encapsulation layer away from the substrate layer, a normal projection of the first filter layer on the substrate layer covering normal projections of the first hollows and the pixel openings on the substrate layer, a refractive index of the first filter layer being greater than a refractive index of the first encapsulation layer.

[0010] In some embodiments, the display panel further comprises:

[0011] at least two inorganic layers, the first filter layer being disposed between the at least two inorganic layers.

[0012] In some embodiments, the first filter layer is configured to transmit light in a plurality of target wavelength bands.

[0013] In some embodiments, the first filter layer has transmittance valleys in a transmittance spectrum of the first filter layer in the wavelength ranges of 480 nm to 530 nm and 580 nm to 630 nm, respectively.

[0014] In some embodiments, the first filter layer comprises a plurality of filter regions, wherein there are at least two filter regions configured to transmit light in different target wavelength bands.

[0015] The filter regions have projections on the substrate layer that cover the projections of the pixel openings on the substrate layer.

[0016] In some embodiments, the display panel further comprises:

[0017] A second encapsulation layer disposed on a side of the first filter layer distal to the substrate layer, the second encapsulation layer comprising at least one inorganic layer.

[0018] In some embodiments, the display panel further comprises:

[0019] A first isolation layer disposed on a side of the second encapsulation layer distal to the substrate layer, the first isolation layer comprising at least one inorganic layer.

[0020] A second filter layer disposed between the second encapsulation layer and the first isolation layer, the second filter layer having a dimension on a side proximal to the substrate layer that is greater than a dimension on a side distal to the substrate layer, the second filter layer having a refractive index greater than a refractive index of the first isolation layer.

[0021] In some embodiments, the display panel further comprises:

[0022] A third encapsulation layer disposed between the first filter layer and the second encapsulation layer, the third encapsulation layer comprising an organic layer.

[0023] A first isolation layer disposed on a side of the second encapsulation layer distal to the substrate layer, the first isolation layer comprising at least one inorganic layer.

[0024] A third filter layer, the third filter layer having a projection on the substrate layer that covers a projection of the light emitting device layer on the substrate layer.

[0025] The third filter layer is disposed between the second encapsulation layer and the first isolation layer; and / or,

[0026] The third filter layer is arranged between the second encapsulation layer and the third encapsulation layer.

[0027] In some embodiments, the display panel further comprises:

[0028] A touch layer is arranged on a side of the second encapsulation layer away from the substrate layer, the touch layer comprising a first touch electrode, a second touch electrode, a light shielding layer, and a protective layer, wherein the protective layer comprises at least one organic layer.

[0029] The first touch electrode and the second touch electrode are separated by the first isolation layer, the first touch electrode is arranged between the second encapsulation layer and the first isolation layer, the light shielding layer is arranged between the second touch electrode and the protective layer, and the refractive index of the first isolation layer is less than the refractive index of the protective layer.

[0030] The orthographic projection of the light shielding layer on the substrate layer covers the orthographic projection of the first touch electrode and the second touch electrode on the substrate layer, and the orthographic projection of the light shielding layer on the substrate layer does not overlap with the orthographic projection of the pixel opening on the substrate layer.

[0031] In some embodiments, the light emitting device layer comprises a first electrode and a second electrode, the light emitting layer is between the first electrode and the second electrode, and a part of the first encapsulation layer is connected to the support layer, the refractive index of the first encapsulation layer is greater than the refractive index of the support layer.

[0032] In some embodiments, a part of the second electrode is between the support layer and the first encapsulation layer, the refractive index of the second electrode is greater than the refractive index of the support layer, and the refractive index of the second electrode is less than the refractive index of the first encapsulation layer.

[0033] In some embodiments, at least a part of the orthographic projection of the support layer on the substrate layer falls within the orthographic projection of the pixel defining layer on the substrate layer; and / or,

[0034] At least a part of the orthographic projection of the pixel defining layer on the substrate layer falls within the orthographic projection of the support layer on the substrate layer.

[0035] The orthographic projection of the support layer on the substrate layer has a spacing distance from the orthographic projection of the pixel defining layer on the substrate layer.

[0036] In some embodiments, the thickness of the support layer is greater than or equal to the thickness of the pixel defining layer, the thickness direction is perpendicular to the plane on which the substrate layer is located, and the light transmittance of the pixel defining layer is less than the light transmittance of the support layer.

[0037] In some embodiments, the first hollowed inner wall comprises at least two stepped surfaces, two adjacent stepped surfaces form a stepped structure, and the extension of at least one stepped surface intersects with the plane where the substrate layer is located.

[0038] In some embodiments, the angle between the support layer and the plane where the substrate layer is located ranges from 60° to 80°; and / or,

[0039] The refractive index of the first encapsulation layer ranges from 1.4 to 1.5; and / or,

[0040] The refractive index of the second encapsulation layer ranges from 1.4 to 1.5; and / or,

[0041] The refractive index of the support layer ranges from 1.2 to 1.3; and / or,

[0042] The refractive index of the first filter layer ranges from 1.6 to 1.7.

[0043] In a second aspect, the embodiments of the present application provide a display panel, comprising:

[0044] A driving substrate, comprising a substrate layer and a driving layer, the driving layer is arranged on one side of the substrate layer;

[0045] A light emitting device layer, arranged on the side of the driving layer away from the substrate layer, the light emitting device layer comprises a pixel defining layer and a light emitting layer, the pixel defining layer comprises a plurality of pixel openings, and the light emitting layer is arranged in the pixel openings;

[0046] A second encapsulation layer, arranged on the side of the light emitting device layer away from the substrate layer, the second encapsulation layer covers the light emitting device layer;

[0047] A first isolation layer, arranged on the side of the second encapsulation layer away from the substrate layer;

[0048] A second filter layer, arranged between the second encapsulation layer and the first isolation layer, the orthographic projection of the second filter layer on the substrate layer covers the orthographic projection of the pixel opening on the substrate layer, the orthographic projection of the second filter layer on the substrate layer does not overlap or partially overlaps with the orthographic projection of the pixel defining layer on the substrate layer, and the refractive index of the second filter layer is greater than the refractive index of the first isolation layer.

[0049] In some embodiments, the size of the second filter layer on the side close to the substrate layer is greater than the size of the second filter layer on the side away from the substrate layer, and the refractive index of the second filter layer is greater than the refractive index of the first isolation layer.

[0050] In some embodiments, the display panel further comprises:

[0051] at least two inorganic layers, the second filter layer is disposed between the at least two inorganic layers.

[0052] In some embodiments, the second filter layer is configured to transmit light in a plurality of target wavelength bands.

[0053] In some embodiments, the display panel further comprises:

[0054] a first encapsulation layer disposed between the second encapsulation layer and the light-emitting device layer, the first encapsulation layer comprising at least one inorganic layer, and / or the second encapsulation layer comprising at least one inorganic layer;

[0055] a third encapsulation layer disposed between the first encapsulation layer and the second encapsulation layer, the third encapsulation layer comprising at least one organic layer;

[0056] a first filter layer disposed between the first encapsulation layer and the third encapsulation layer, a footprint of the first filter layer on the substrate layer covering a footprint of the light-emitting device layer on the substrate layer, the first filter layer having a refractive index greater than a refractive index of the first encapsulation layer.

[0057] In some embodiments, the display panel further comprises:

[0058] a support layer disposed between the pixel defining layer and the first encapsulation layer, the support layer comprising a plurality of first hollows, a footprint of the first hollows on the substrate layer covering a footprint of the pixel opening on the substrate layer;

[0059] the light-emitting device layer comprising a first electrode and a second electrode, the light-emitting layer being between the first electrode and the second electrode, there being a portion of the first encapsulation layer connected to the support layer, the first encapsulation layer having a refractive index greater than a refractive index of the support layer;

[0060] a first encapsulation layer disposed between the second encapsulation layer and the light-emitting device layer;

[0061] in a case where there is a portion of the second electrode between the support layer and the first encapsulation layer, the second electrode having a refractive index greater than a refractive index of the support layer, the second electrode having a refractive index less than a refractive index of the first encapsulation layer.

[0062] In some embodiments, the display panel further comprises:

[0063] a third encapsulation layer disposed between the first encapsulation layer and the second encapsulation layer;

[0064] a third filter layer disposed between the second encapsulation layer and the third encapsulation layer, and / or disposed between the second encapsulation layer and the first isolation layer.

[0065] In some embodiments, a projection of at least part of the support layer on the substrate layer falls within a projection of the pixel defining layer on the substrate layer; and / or,

[0066] a projection of at least part of the pixel defining layer on the substrate layer falls within a projection of the support layer on the substrate layer;

[0067] wherein a boundary of the projection of the support layer on the substrate layer and a boundary of the projection of the pixel defining layer on the substrate layer have a spacing distance.

[0068] In some embodiments, a thickness of the support layer is greater than or equal to a thickness of the pixel defining layer, the thickness direction being a direction perpendicular to a plane on which the substrate layer lies, and a light transmittance of the pixel defining layer is less than a light transmittance of the support layer.

[0069] In some embodiments, the inner wall of the first hollow structure comprises at least two stepped surfaces, two adjacent stepped surfaces forming a stepped structure, and an extension of at least one stepped surface intersects with a plane on which the substrate layer lies.

[0070] In some embodiments, the display panel further comprises:

[0071] a touch layer disposed on a side of the second encapsulation layer away from the substrate layer, the touch layer comprising a first touch electrode, a second touch electrode, a light shielding layer, and a protective layer, wherein the protective layer comprises at least one inorganic layer.

[0072] the first isolation layer is disposed between the first touch electrode and the second touch electrode, the first touch electrode is disposed between the second encapsulation layer and the first isolation layer, the light shielding layer is disposed between the second touch electrode and the protective layer, and a refractive index of the first isolation layer is less than a refractive index of the protective layer.

[0073] a projection of the light shielding layer on the substrate layer covers projections of the first touch electrode and the second touch electrode on the substrate layer, and the projection of the light shielding layer on the substrate layer does not overlap with a projection of the pixel opening on the substrate layer.

[0074] In some embodiments, the support layer and the substrate layer are arranged at an angle in the range of 60° to 80°; and / or,

[0075] The refractive index of the first encapsulation layer is in the range of 1.4 to 1.5; and / or,

[0076] The refractive index of the second encapsulation layer is in the range of 1.4 to 1.5; and / or,

[0077] The refractive index of the support layer is in the range of 1.2 to 1.3; and / or,

[0078] The refractive index of the second filter layer is in the range of 1.6 to 1.7; and / or,

[0079] The refractive index of the first filter layer is in the range of 1.6 to 1.7; and / or,

[0080] The refractive index of the second filter layer is in the range of 1.6 to 1.7.

[0081] In a third aspect, the embodiments of the present application provide a display device, comprising:

[0082] The display panel according to the first aspect or the second aspect.

[0083] The display panel provided by the embodiments of the present application is provided with a plurality of first hollows in the support layer, so that the large-angle light emitted by the light-emitting layer is totally reflected at the contact surface between the first filter layer with high refractive index and the first encapsulation layer with low refractive index, and then the large-angle light emitted by the light-emitting layer is converged to the normal field of view on the display side. The light emitted by the light-emitting layer is refracted at the contact surface between the first filter layer and the first encapsulation layer by using the first filter layer with high refractive index and the first encapsulation layer with low refractive index. By setting the refractive index difference between the first filter layer and the first encapsulation layer, the large-angle light can be emitted to the normal angle direction by reflection and refraction, thereby improving the normal angle light-emitting efficiency of the light-emitting device and improving the display effect of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0084] Figure 1 FIG. 1 is a schematic partial structure diagram of a display panel provided by the embodiments of the present application;

[0085] Figure 2 FIG. 2 is a schematic spectrum diagram of a display panel provided by the embodiments of the present application;

[0086] Figure 3 FIG. 3 is another schematic partial structure diagram of a display panel provided by the embodiments of the present application;

[0087] Figure 4 FIG. 4 is still another schematic partial structure diagram of a display panel provided by the embodiments of the present application;

[0088] Figure 5 FIG. 6 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0089] Figure 6 FIG. 7 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0090] Figure 7 FIG. 8 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0091] Figure 8 FIG. 9 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0092] Figure 9 FIG. 10 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0093] Figure 10 FIG. 11 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0094] Figure 11 FIG. 12 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0095] Figure 12 FIG. 13 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0096] Figure 13 FIG. 14 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0097] Figure 14 FIG. 15 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0098] Figure 15 FIG. 16 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0099] Figure 16 FIG. 17 shows a schematic structure diagram of a display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0100] In order to better understand the technical solutions provided by the embodiments of the present application, the technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0101] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily implying any actual relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. The terms "two or more" include two or more.

[0102] At present, display devices with the advantages of large generation line production capacity and low cost are widely used in many fields such as television, computer and mobile phone. With the rise of display technologies such as LCD and OLED, improving the brightness of the display screen is one of the important factors to improve the user experience, therefore, it is very important to improve the display effect of the display. However, the existing display is affected by external water vapor, which can easily cause the internal spectrum of the display to change, affecting the display effect.

[0103] Therefore, the display panel and display device provided by the embodiments of the present application can avoid the change of spectrum caused by water vapor and improve the display effect.

[0104] In a first aspect, the embodiments of the present application provide a display panel. Figure 1 A schematic partial structure diagram of a display panel provided by the embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the display panel comprises a substrate 1, a plurality of sub-pixels 2, a plurality of light emitting diodes 3 and a plurality of light emitting diodes 4. Figure 1As shown, the display panel includes a driving substrate 100, a light emitting device layer 200, a support layer 300, a first encapsulation layer 400, a first filter layer 500, and a second encapsulation layer 600. The driving substrate 100 includes a substrate layer 101 and a driving layer 102, and the driving layer 102 is disposed on one side of the substrate layer 101. The substrate layer 101 can be a flexible substrate or a rigid substrate, and the driving layer 102 can include pixel circuits and driving circuits. The pixel circuits and the driving circuits of the driving layer 102 can be used to drive the light emitting device to emit light. The light emitting device layer 200 is disposed on the side of the driving layer 102 away from the first substrate 101, and the light emitting device layer 200 includes a pixel defining layer 201 and a light emitting layer 202. The pixel defining layer 201 includes a plurality of pixel openings 203, and the light emitting layer 202 is disposed in the pixel openings 203. The support layer 300 is disposed on the side of the pixel defining layer 201 away from the substrate layer 101, and the angle between the extension plane of the inclined surface of the support layer 300 and the plane where the substrate layer 101 is located is greater than 30°. The support layer 300 is disposed to cover the pixel defining layer 201, which can raise the pixel openings to increase the film layer step difference. The greater the angle between the extension plane of the inclined surface of the support layer 300 and the plane where the substrate layer 101 is located, the greater the film layer step difference. The height of the inclined surface of the support layer 300 corresponding to the pixel defining layer 201 is increased, the area of the inclined surface is increased, and then the area of the reflecting surface is increased, thereby improving the light extraction efficiency. The support layer 300 includes a plurality of first hollows 301, and the orthogonal projection of the first hollows 301 on the substrate layer 101 covers the orthogonal projection of the pixel openings 203 on the substrate layer 101. The normal angle light emitted by the light emitting layer 202 directly exits to the display side through the first hollows 301. The first encapsulation layer 400 is disposed on the side of the light emitting device layer 200 and the support layer 300 away from the substrate layer 101, and the second encapsulation layer 600 is disposed on the side of the first encapsulation layer 400 away from the substrate layer 101. The first encapsulation layer 400 and the second encapsulation layer can be inorganic encapsulation layers prepared from inorganic materials. The second encapsulation layer 600 can also be an organic encapsulation layer. The first filter layer 500 is disposed between the first encapsulation layer 400 and the second encapsulation layer 600, and the first filter layer 500 includes an organic material. The first filter layer 500 can filter light of a target wavelength band. The encapsulation layer of the inorganic material can prevent water vapor from entering, so as to protect the spectrum of the first filter layer 500 from being changed by water vapor, thereby affecting the light filtering of the first filter layer. The inorganic first encapsulation layer 400 and the second encapsulation layer 600 can prevent water vapor from entering the light emitting device layer 200, thereby preventing the light emitting device layer from short circuiting and affecting the light emission of the light emitting device layer.

[0105] For example, the support layer 300 can be disposed in the same layer as the support column of the display panel. The support column and the support layer 300 can also be used to support the light emitting device to avoid damage to the light emitting device under external pressure, thereby affecting the light emission of the display panel.

[0106] Reference Figure 1The first filter layer 500 can be a film layer covering the whole layer, and the orthographic projection of the first filter layer 500 on the substrate layer 101 covers the orthographic projection of the first hollow 301 and the pixel opening 203 on the substrate layer. The inner wall of the first hollow can be a bevel, and the inner wall of the pixel opening 203 can also be a bevel. The first encapsulation layer 400 and the first filter layer 500 are both covered on the inner wall of the first hollow. The refractive index of the first filter layer 500 is greater than that of the first encapsulation layer 400. In the case that the incidence angle meets the total reflection condition, the first reflection surface 410 can be formed at the contact surface between the first filter layer 500 and the first encapsulation layer 400. Due to the refractive index difference between the high-refractive first filter layer 500 and the low-refractive first encapsulation layer 400, the first light rays S1 with a large viewing angle emitted by the light-emitting layer 202 are reflected at the first reflection surface 410, and the first light rays S1 with a large viewing angle are gathered to the display side, that is, the light path of the light rays with a large viewing angle tends to be perpendicular to the normal line, thereby improving the normal light output of the display panel. In addition, due to the refractive index difference between the high-refractive first filter layer 500 and the low-refractive first encapsulation layer 400, a refractive surface can be formed at the contact interface between the first filter layer 500 and the first encapsulation layer 400. The light rays with a large viewing angle (light rays incident below the normal line of the bevel) emitted by the light-emitting layer 202 are incident from the high-refractive first filter layer 500 to the low-refractive first encapsulation layer 400, so that the light rays with a large viewing angle are emitted away from the normal line, that is, the light rays with a large viewing angle converge to the normal line. By setting the refractive index difference between the first filter layer and the first encapsulation layer, the light rays with a large viewing angle can be emitted to the normal direction by reflection and refraction, thereby improving the normal light-emitting efficiency of the light-emitting device for display.

[0107] The first filter layer can be used to transmit light rays of a target waveband, and can achieve a filtering effect, filter out light rays of a target color, achieve high-brightness picture display color purity, and improve the display effect of the display panel.

[0108] By setting the support structure 300, the film layer step difference formed by the support layer 300 and the pixel defining layer 201 can be raised, the height of the corresponding bevel of the support layer 300 and the pixel defining layer 201 can be extended, the area of the bevel can be increased, and then the area of the reflection surface can be increased, thereby improving the light-emitting efficiency. The support layer can also serve as a support.

[0109] Generally, the filter layer in the display panel is arranged outside the encapsulation layer. When the display panel is immersed in external water vapor, the spectrum of the filter layer is easily changed, thereby affecting the display effect.

[0110] The display panel provided by the embodiments of the present application has a plurality of first hollows in the support layer, a slope is formed on the inner wall of the first hollow, the first filter layer and the first encapsulation layer are both covered on the slope, the large-angle light emitted by the light-emitting layer is totally reflected on the contact surface between the first filter layer with high refractive index and the first encapsulation layer with low refractive index, and then the large-angle light emitted by the light-emitting layer converges to the normal field of view on the display side. The refractive index difference between the first filter layer and the first encapsulation layer causes the large-angle light emitted by the light-emitting layer to be refracted on the contact surface between the first filter layer with high refractive index and the first encapsulation layer with low refractive index. The first filter layer is arranged between the first encapsulation layer and the second encapsulation layer to prevent water vapor from entering and avoid the change of the spectrum on the surface of the first filter layer, thereby affecting the light filtering of the first filter layer. The large-angle light is emitted to the normal angle direction through reflection and refraction, and the light emitted by the light-emitting layer can be filtered to achieve high-brightness picture display and improve the display effect of the display panel.

[0111] In some embodiments, the display panel further comprises at least two inorganic layers, and the first filter layer can be arranged between the at least two inorganic layers.

[0112] For example, the first encapsulation layer 400 can comprise at least one inorganic layer, and the second encapsulation layer 600 can comprise at least one inorganic layer. The first encapsulation layer 400 can comprise two inorganic encapsulation layers, and the second encapsulation layer 600 can comprise two inorganic layers. The first encapsulation layer 400 can comprise multiple inorganic encapsulation layers, and the second encapsulation layer 600 can comprise multiple inorganic layers. By arranging the first filter layer 500 between the at least two inorganic layers, on the one hand, water vapor can be prevented from entering the first filter layer and affecting the display effect. On the other hand, by adjusting the number of organic encapsulation layers and inorganic encapsulation layers to adjust the distance between the light-emitting layer and the first filter layer, different display effects can be achieved.

[0113] In some embodiments, the first filter layer 500 can transmit a plurality of target light rays through an organic film layer. The first filter layer 500 can replace the red, green and blue filter films prepared by the conventional three processes, thereby reducing the process steps and reducing the processing cost.

[0114] For example, the first filter layer 500 can comprise a film layer formed by mixing phase delay materials corresponding to red, green and blue wave bands. The transmittance range of the first filter layer 500 can be 70% to 80%, and the first filter layer 500 can correspond to a plurality of R (red), G (green) and B (blue) visible light wave bands to achieve color picture display.

[0115] Figure 2A schematic spectral diagram of the light filtering layer is provided for the embodiments of the present application. The first light filtering layer 500 has transmittance valleys in the wavelength ranges of 480-530 nm and 580-630 nm in the light transmittance spectrum thereof.

[0116] Reference is made to Figure 2 It can be seen that the first light filtering layer 500 has transmittance valleys in the wavelength ranges of 480-530 nm and 580-630 nm in the spectrum thereof. Thus, three peaks of transmittance of wavelengths of 380-480 nm, 480-580 nm and 630-780 nm are obtained, the peak of wavelength of 380-480 nm corresponds to the transmission of blue light, the peak of wavelength of 480-580 nm corresponds to the transmission of green light, and the peak of wavelength of 630-780 nm corresponds to the transmission of red light, so that the first light filtering layer can transmit light of three colors.

[0117] For example, as Figure 2 shown, when the wavelength of the light emitted by the light emitting layer 202 is 450 nm, the first light filtering layer 500 can transmit blue light, and the light transmittance of the first light filtering layer 500 is 75%; when the wavelength of the light emitted by the light emitting layer 202 is 530 nm, the first light filtering layer 500 can transmit green light, and the light transmittance of the first light filtering layer 500 is 70%; and when the wavelength of the light emitted by the light emitting layer 202 is 680 nm, the first light filtering layer 500 can transmit red light, and the light transmittance of the first light filtering layer 500 is 80%. The first light filtering layer 500 can transmit light of red, green and blue colors at the same time. The phase delay material of the first light filtering layer 500 can filter out light of the corresponding target wavelength band, and light of other wavelength bands is absorbed by the first light filtering layer 500, wherein the natural light incident on the first light filtering layer 500 from the external environment of the display panel is avoided to cause color mixing of the display side picture, thereby improving the picture quality of the display picture.

[0118] In some embodiments, the first light filtering layer 500 includes a plurality of light filtering regions, which can be a plurality of red light filtering regions, green light filtering regions and blue light filtering regions arranged alternately. The orthographic projection of the light filtering regions on the substrate layer covers the orthographic projection of the pixel openings on the substrate layer, wherein each light filtering region covers one pixel opening, the red light filtering regions correspond to the red light emitting layers, the green light filtering regions correspond to the green light emitting layers, and the blue light filtering regions correspond to the blue light emitting layers. Different light filtering regions can be prepared by using phase delay materials of different target wavelengths. The light emitted by the light emitting layer passes through different light filtering regions to emit light of different target wavelength bands, thereby avoiding color mixing of the display side picture, playing a light filtering role and improving the picture quality of the display picture.

[0119] Exemplarily, the first filter layer 500 can be prepared by injecting a mixed solution of red, green and blue materials on an acrylic plate, and can filter out light rays of corresponding wave bands.

[0120] Figure 3 Another schematic partial structural diagram of a display panel is provided for the embodiments of the present application. Exemplarily, as shown in Figure 3 The display panel further includes a first isolation layer 700 and a second filter layer 510. The first isolation layer is disposed on a side of the second encapsulation layer 600 away from the substrate layer 101, the second encapsulation layer 600 is disposed on a side of the third encapsulation layer 800 away from the substrate layer 101, and the second filter layer 510 is disposed between the first isolation layer 700 and the second encapsulation layer 600. The second filter layer 510 can include R, G and B filter materials mixed together, and can transmit light rays of corresponding wave bands to improve image quality. The second filter layer 510 can adopt the same material as the first filter layer 500. The first isolation layer 700 includes at least one inorganic layer, and the second filter layer 510 is disposed between the second encapsulation layer 600 and the first isolation layer 700, which can protect the second filter layer 510, prevent water vapor from entering the second filter layer 510, avoid changes in the spectrum of the second filter layer 510, and improve display effects.

[0121] Exemplarily, the third encapsulation layer has a thickness ranging from 4 μm to 12 μm. By adjusting the thickness of the third encapsulation layer, the deflection path of the light rays changes after passing through the third filter layer, which ensures that the light rays are emitted to the display side in a forward direction while achieving different display effects.

[0122] Exemplarily, as shown in Figure 3 The refractive index of the second filter layer 510 is greater than the refractive index of the first isolation layer 700, and the seventh light ray S7 of a large viewing angle emitted by the light emitting layer 202 is refracted at the contact surface between the second filter layer 510 and the first isolation layer 700, and the seventh light ray S7 of a large viewing angle is gathered to the display side. The light ray S07 is obtained after the seventh light ray S7 sequentially passes through the first encapsulation layer 400, the third encapsulation layer 800, the second encapsulation layer 600 and the second filter layer 510.

[0123] Exemplarily, as shown in Figure 3 The light ray S08 is obtained after the eighth light ray S8 sequentially passes through the first encapsulation layer 400, the third encapsulation layer 800, the second encapsulation layer 600 and the second filter layer 510. The eighth light ray S8 of a large viewing angle emitted by the light emitting layer 202 is refracted at the contact surface between the second filter layer 510 and the first isolation layer 700, and the eighth light ray S8 of a large viewing angle is gathered to the display side.

[0124] Exemplarily, the display panel can be simultaneously provided with the first filter layer 500 and the second filter layer 510, the large-angle light emitted by the light-emitting layer 202 first passes through the contact surface between the first filter layer 500 and the first encapsulation layer 400 to perform light condensation once, and then passes through the contact surface between the second filter layer 510 and the first isolation layer 700 to perform light condensation once, so that the two filter layers perform light filtering and light condensation twice, thereby realizing high-brightness and high-quality display effects.

[0125] Exemplarily, the first isolation layer 700 can include two inorganic layers or multiple inorganic layers, and the number of inorganic layers can be adjusted according to actual display requirements, so that the light angle after the light passing through the first isolation layer 700 changes, thereby realizing different display effects.

[0126] Exemplarily, the second filter layer 510 can be a patterned filter layer, the size of the second filter layer 510 on the side close to the substrate layer 101 is greater than the size of the second filter layer 510 on the side away from the substrate layer 101, that is, the second filter layer is a structure of being narrow on the top and wide on the bottom, and the angle between the extension surface of the side surface of the second filter layer 510 and the plane where the substrate layer 101 is located can be an acute angle. The first isolation layer 700 covers the patterned second filter layer 510, can locally pad the first isolation layer 700, and can form a film layer step difference between the first isolation layer 700 and the second filter layer 510, extend the height of the corresponding inclined surface of the first isolation layer 700 and the second filter layer 510, increase the area of the inclined surface, and then increase the area of the reflection surface, thereby improving the light extraction efficiency. The refractive index of the first isolation layer 700 is less than the refractive index of the second filter layer, so as to form the first refractive surface 710 at the contact surface between the first isolation layer 700 and the side surface of the second filter layer 510, so that the large-angle light emitted by the light-emitting layer 202 is refracted at the first refractive surface 710, and the large-angle light is condensed to the display side, thereby improving the light extraction efficiency of the display panel.

[0127] Exemplarily, the first encapsulation layer 400 covers the support layer 300, and the refractive index of the first encapsulation layer 400 is greater than the refractive index of the support layer 300, so as to form the second reflection surface 310 at the contact surface between the first encapsulation layer 400 and the support layer 300, and the angle between the second reflection surface 310 and the plane where the substrate layer 101 is located is greater than 30°, that is, the angle between the extension surface of the inclined surface of the support layer and the plane where the substrate layer 101 is located is greater than 30°. The large-angle light emitted by the light-emitting layer 202 is condensed for the first time at the second reflection surface 310 and for the second time at the first refractive surface 710. Through the two light condensation processes, the large-angle light emitted by the light-emitting layer 202 is condensed to the display side, so that the large-angle light leakage can be avoided, the forward light output of the display panel is improved, and the light extraction efficiency of the display panel is improved.

[0128] Exemplarily, Figure 4A schematic light path diagram of a display panel is provided in an embodiment of the present application. As shown in Figure 4 The first filter layer 500 covers the first encapsulation layer 400, and the first encapsulation layer 400 covers the support layer 300. The refractive index of the first encapsulation layer 400 is greater than that of the support layer 300, and the third light ray S3 of a large viewing angle emitted by the light-emitting layer 202 is refracted by the second reflecting surface 310. The refractive index of the first filter layer is greater than that of the first encapsulation layer 400, and the fourth light ray S4 of a large viewing angle emitted by the light-emitting layer 202 is reflected by the first reflecting surface 410. By using the refractive index difference between the first filter layer 500 and the first encapsulation layer 400, and the refractive index difference between the first encapsulation layer 400 and the support layer 300, the large viewing angle light rays are made to converge in the normal viewing angle direction by reflection and refraction, thereby improving the light-emitting device normal viewing angle light-emitting efficiency to supply the display picture.

[0129] In some embodiments, the display panel further includes a third encapsulation layer 800 and a third filter layer 520. The third encapsulation layer is arranged between the first encapsulation layer 400 and the second encapsulation layer 600. The third encapsulation layer 800 can include one organic layer, two organic layers, or multiple organic layers. The number of organic layers can be adjusted according to actual display requirements, so that the light-emitting angle of the light ray after passing through the third encapsulation layer 800 changes, and different display effects are achieved. The third filter layer 520 can include R, G, and B organic filter materials mixed together, and the third filter layer 520 can transmit light rays of corresponding wave bands to achieve picture display.

[0130] It should be noted that the materials of the third filter layer 520, the second filter 510, and the first filter layer 500 can be the same, and the spectra of the third filter layer 520, the second filter 510, and the first filter layer 500 can be the same, and all can achieve the transmission of red, green, and blue light rays.

[0131] Figure 5 Another schematic partial structure diagram of a display panel is provided in an embodiment of the present application. For example, Figure 5As shown, the third encapsulation layer 800 can be disposed between the first encapsulation layer 400 and the second encapsulation layer 600, and the third filter layer 520 is disposed between the third encapsulation layer 800 and the second encapsulation layer 600. The third filter layer 520 covers the orthographic projection of the light-emitting device layer 200 on the substrate layer 101, and the orthographic projection of the third filter layer 520 on the substrate layer 101 covers the orthographic projection of the third encapsulation layer 800 on the substrate layer 101. The third filter layer can be a filter layer disposed in an entire layer. The first encapsulation layer 400 and the second encapsulation layer 600 can both be inorganic encapsulation layers, and the third encapsulation layer 800 can be an organic encapsulation layer. An organic layer is disposed on the side of the third filter layer 520 close to the substrate layer 101, and the third filter layer 520 composed of an organic material is prepared on the organic layer, which can reduce the difficulty of film processing. The organic third filter layer 520 and the organic third encapsulation layer 800 are disposed between the two inorganic layers, which can protect the third filter layer 520 from water vapor, prevent the spectrum of the third filter layer 520 from changing, prevent the light-emitting device layer from short-circuiting due to water vapor, improve the display effect, and prolong the service life of the display panel.

[0132] Figure 6 Another schematic partial structure diagram of a display panel is provided in the embodiments of the present application. As an example, Figure 6 As shown, the third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700, and the orthographic projection of the first isolation layer on the substrate layer 101 covers the orthographic projection of the third filter layer 520 on the substrate layer 101. The third filter layer can be a filter layer disposed in an entire layer. The first isolation layer 700 and the second encapsulation layer 600 are inorganic layers, and the third filter layer is disposed between the two inorganic layers to protect the third filter layer 520 from water vapor, prevent the spectrum of the third filter layer 520 from changing, and improve the display effect.

[0133] In some examples, the display panel can simultaneously dispose an entire layer of the third filter layer 520 between the second encapsulation layer 600 and the first isolation layer 700 and between the third encapsulation layer 800 and the second encapsulation layer 600.

[0134] As an example, in the case where the third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700 or the third filter layer 520 is disposed between the third encapsulation layer 800 and the second encapsulation layer 600, the first encapsulation layer, the second encapsulation layer, and the first isolation layer all play a role in isolating water vapor. In this case, the large-angle light emitted by the light-emitting layer passes through the first reflecting surface to concentrate the light, so that the display panel can improve the protection of the filter layer and the light-emitting device layer while realizing high-quality picture display, improve the reliability of the display panel, and improve the display effect.

[0135] Figure 7 A schematic partial structure diagram of a display panel is provided for an embodiment of the present application. As shown in Figure 7 The display panel further includes a touch layer 900, which is disposed on a side of the third filter layer 520 away from the substrate layer 101, and is disposed on a side of the second encapsulation layer 600 away from the substrate layer 101. The touch layer 900 includes a first touch electrode 901 and a second touch electrode 902. The first touch electrode 901 is disposed on a side of the second encapsulation layer 600 away from the substrate layer 101, and the second touch electrode 902 is disposed on a side of the first touch electrode 901 away from the substrate layer 101. A first isolation layer 700 is disposed between the first touch electrode 901 and the second touch electrode 902.

[0136] As shown in Figure 7 The display panel further includes a light shielding layer 903 and a protective layer 904. The light shielding layer 903 is disposed on a side of the second touch electrode 902 away from the substrate layer 101, and the protective layer 904 is disposed on a side of the light shielding layer 903 away from the substrate layer 101. The refractive index of the first isolation layer 700 can be less than the refractive index of the protective layer 904, and the light rays exit to the display side in a diverging state. The refractive index of the first isolation layer 700 can be greater than the refractive index of the protective layer 904, and the light rays exit to the display side in a converging state. By setting the difference between the refractive index of the first isolation layer 700 and the refractive index of the protective layer 904, the light exit direction of the light rays can be changed to achieve different display effects. The light shielding layer 903 covers the orthographic projection of the first touch electrode 901 and the second touch electrode 902 on the substrate layer 101, and the light shielding layer 903 completely covers the touch electrodes, which can avoid the reflection of natural light by the touch electrodes and affect the display effect. The orthographic projection of the light shielding layer 903 on the substrate layer 101 does not overlap with the orthographic projection of the pixel opening 203 on the substrate layer 101, so as to avoid shielding the normal viewing angle light rays emitted by the light emitting layer.

[0137] As shown in Figure 7 The first isolation layer 700 serves as an insulating layer between the first touch electrode 901 and the second touch electrode 902. The second filter layer 510 can be disposed between the first isolation layer 700 and the second encapsulation layer 600, and the third filter layer 520 can be disposed between the first isolation layer 700 and the second encapsulation layer 600. By disposing the filter layer between the two inorganic layers, the protection of the filter layer is achieved.

[0138] Figure 8 A schematic partial structure diagram of another display panel is provided for an embodiment of the present application. As shown in Figure 8As shown, the second filter layer 510 can be arranged between the first isolation layer 700 and the second encapsulation layer 600, the light shielding layer 903 is arranged on the side of the first isolation layer 700 away from the substrate layer 101, the orthographic projection of the light shielding layer 903 on the substrate layer 101 and the side surface of the first isolation layer 700 on the substrate layer 101 overlap, and the orthographic projection of the light shielding layer 903 on the substrate layer 101 and the orthographic projection of the second filter layer 510 on the substrate layer 101 do not overlap, so as to avoid affecting the second filter layer and the light transmission of the first encapsulation layer, while meeting the light shielding and touch functions.

[0139] Figure 9 Another schematic partial structure diagram of a display panel is provided for the embodiments of the present application. As an example, as shown in FIG. 6, the display panel comprises a substrate layer 101, a support layer 300, a first encapsulation layer 400, a second encapsulation layer 600, a first isolation layer 700, a second filter layer 510, a light emitting device layer 200, and a pixel opening 203. Figure 9 As shown, the light emitting device layer 200 comprises a first electrode 205 and a second electrode 206, the first electrode 205 is arranged on the side close to the substrate layer 101, and the second electrode 206 is arranged on the side away from the substrate layer 101. The light emitting layer 202 is located between the first electrode 205 and the second electrode 206, and the first electrode 205 and the second electrode 206 jointly drive the light emitting layer 202 to emit light.

[0140] As an example, as shown in FIG. 6, the display panel comprises a substrate layer 101, a support layer 300, a first encapsulation layer 400, a second encapsulation layer 600, a first isolation layer 700, a second filter layer 510, a light emitting device layer 200, and a pixel opening 203. Figure 9 As shown, the first encapsulation layer 400 is connected with the support layer 300, the first encapsulation layer 400 covers the support layer 300, and the second electrode is arranged directly above the pixel opening 203. The orthographic projection of the second electrode 206 on the substrate layer 101 and the orthographic projection of the support layer 300 on the substrate layer 101 do not overlap, and the orthographic projection of the second electrode 206 on the substrate layer 101 and the orthographic projection of the pixel opening 203 on the substrate layer 101 overlap. The refractive index of the first encapsulation layer 400 is greater than the refractive index of the support layer 300, so that the large-angle light emitted by the light emitting layer 202 is reflected on the contact surface between the support layer 300 and the first encapsulation layer 400, and the large-angle light is gathered to the display side.

[0141] As an example, the second electrode 206 can be a cathode of the light emitting device, and the first electrode 205 can be an anode of the light emitting device.

[0142] Figure 10 Another schematic partial structure diagram of a display panel is provided for the embodiments of the present application. As an example, as shown in FIG. 6, the display panel comprises a substrate layer 101, a support layer 300, a first encapsulation layer 400, a second encapsulation layer 600, a first isolation layer 700, a second filter layer 510, a light emitting device layer 200, and a pixel opening 203. Figure 10As shown, the second electrode 206 is disposed between the support layer 300 and the first encapsulation layer 400, the orthographic projection of the second electrode 206 on the substrate layer 101 covers the orthographic projection of the light-emitting device layer 200 on the substrate layer, the orthographic projection of the first encapsulation layer 400 on the substrate layer 101 covers the second electrode 206, the refractive index of the second electrode is greater than the refractive index of the support layer 300, the refractive index of the second electrode 206 is less than the refractive index of the first encapsulation layer 400, to form a third reflecting surface 320 at the contact surface between the second electrode 206 and the support layer 300, and form a fourth reflecting surface 420 at the contact surface between the first encapsulation layer 400 and the second electrode 206. Part of the large viewing angle light emitted by the light-emitting layer 202 is reflected once at the contact surface between the support layer 300 and the second electrode 206, and part of the large viewing angle light emitted by the light-emitting layer 202 is reflected once at the contact surface between the second electrode 206 and the first encapsulation layer 400. The angle of the light incident to the contact surface between the support layer 300 and the second electrode 206 is greater than the angle of the light incident to the contact surface between the second electrode 206 and the first encapsulation layer 400. By disposing the orthographic projection of the second electrode 206 on the substrate layer 101 to cover the orthographic projection of the light-emitting device layer 200 on the substrate layer, more large viewing angle light can be collected by twice reflection in the light-emitting device layer, and the light-emitting efficiency of the display panel is improved.

[0143] As shown in the example, Figure 10 As shown, the fifth light S5 of the large viewing angle emitted by the light-emitting layer 202 is reflected by the third reflecting surface 320, and the sixth light S6 of the large viewing angle emitted by the light-emitting layer 202 is reflected by the fourth reflecting surface 420.

[0144] In some embodiments, part of the orthographic projection of the support layer 300 on the substrate layer 101 falls within the orthographic projection of the pixel definition layer 201 on the substrate layer 101, or part of the orthographic projection of the pixel definition layer 201 on the substrate layer 101 falls within the orthographic projection of the support layer 300 on the substrate layer 101. The boundary of the orthographic projection of the support layer 300 on the substrate layer 101 and the boundary of the orthographic projection of the pixel definition layer 201 on the substrate layer 101 have a spacing distance.

[0145] Figure 11 A schematic partial structure diagram of a display panel is provided for the embodiments of the present application. As shown in the example, Figure 11As shown in the figure, the orthographic projection of the pixel defining layer 201 on the substrate layer 101 falls within the orthographic projection of the support layer 300 on the substrate layer 101, the support layer 300 completely covers the pixel defining layer 201, and the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to completely cover the pixel defining layer 201, the support layer 300 is prepared on the basis of the pixel defining layer 201, and the thickness of the support layer 300 is increased. The greater the thickness of the support layer 300, the longer the inclined surface where the first hollow inner wall is located, and the greater the contact surface between the support layer 300 and the adjacent film layer, the more large-angle light rays that can be reflected, and the higher the light output efficiency of the display panel.

[0146] Figure 12 Another schematic partial structure diagram of a display panel is provided for the embodiments of the present application. As an example, Figure 12 As shown in the figure, the orthographic projection of the support layer 300 on the substrate layer 101 falls within the orthographic projection of the pixel defining layer 201 on the substrate layer 101, the support layer 300 partially covers the pixel defining layer 201, and the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to partially cover the pixel defining layer 201, the support layer 300 can cover at least part of the surface of the pixel defining layer 201 away from the substrate layer 101, so that the angle of the light rays incident on the first hollow inner wall of the support layer is greater than the angle of the light rays incident on the side surface of the pixel defining layer 201, the inner recessed profile of the support layer 300 forms a stepped structure with the pixel defining layer 201, increases the area of the inclined surface, and further increases the area of the reflecting surface, so that the large-angle light rays are gradient-reflected, more large-angle light rays are gathered, and the light output efficiency of the display panel is improved.

[0147] As an example, Figure 12 As shown in the figure, the inner wall of the first hollow of the support layer 300 includes at least two stepped surfaces. Among them, the first stepped surface 311 is formed on the plane of the pixel defining layer 201 close to the support layer 300, and the second stepped surface 312 is formed on the side surface of the support layer 300. The first stepped surface 311 is used to reflect the light rays leaked from the contact plane between the support layer and the pixel defining layer 201, and the second stepped surface 312 is used to reflect the large-angle light rays emitted from the light-emitting layer 202.

[0148] As an example, Figure 12As shown, the first hollowed inner wall of the support layer 300 can further include a third stepped surface 313 formed on the side surface of the pixel defining layer 201. The first stepped surface 311 and the third stepped surface 313 arranged adjacently can form a stepped structure, and the second stepped surface 312 and the third stepped surface 313 arranged adjacently can form a stepped structure. The extension surface of the first stepped surface 311 and the extension surface of the third stepped surface 313 can both intersect with the plane of the substrate layer 101, and the second stepped surface 312 is parallel to the plane of the substrate layer 101. By arranging at least two stepped surfaces on the first hollowed inner wall, the leakage of large-angle light can be effectively avoided.

[0149] For example, the thickness of the support layer 300 is greater than or equal to the thickness of the pixel defining layer 201, the thickness direction is perpendicular to the plane of the substrate layer 101, the pixel defining layer is black, and the light transmittance of the pixel defining layer 201 is less than that of the support layer 300. By arranging the thickness of the support layer 300 to be greater than or equal to the thickness of the pixel defining layer 201, the length of the contact surface formed between the support layer 300 and the adjacent film layer can be extended, and more reflected large-angle light can be obtained.

[0150] In some embodiments, the angle between the support layer and the plane of the substrate layer is in the range of 60° to 80°, the refractive index of the first encapsulation layer is in the range of 1.4 to 1.5, the refractive index of the second encapsulation layer is in the range of 1.4 to 1.5, the refractive index of the third encapsulation layer can be in the range of 1.6 to 1.7, the refractive index of the support layer is in the range of 1.2 to 1.3, the refractive index of the first filter layer is in the range of 1.6 to 1.7, the refractive index of the second filter layer is in the range of 1.6 to 1.7, the refractive index of the third filter layer is in the range of 1.6 to 1.7, and the refractive index of the first isolation layer is in the range of 1.4 to 1.5.

[0151] For example, the thickness of the first filter layer is in the range of 2.5 μm to 3.5 μm, the thickness of the second filter layer is in the range of 2.5 μm to 3.5 μm, and the thickness of the third filter layer is in the range of 2.5 μm to 3.5 μm. The thickness of the filter layer can be adjusted according to the actual display requirements to adapt to different display effects. The present application does not describe them one by one.

[0152] For example, as Figure 3As shown, in the case that the second filter layer 510 is arranged between the second encapsulation layer 600 and the first isolation layer 700, and the size of the second filter layer 510 close to the substrate layer 101 is greater than the size of the second filter layer 510 away from the substrate layer 101, the refractive index of the second filter layer 510 can be 1.6, the refractive index of the second filter layer 510 can be 1.65, and the refractive index of the second filter layer 510 can be 1.7. The refractive index of the first isolation layer 700 can be 1.4, the refractive index of the first isolation layer 700 can be 1.45, and the refractive index of the first isolation layer 700 can be 1.5. The refractive index of the support layer 300 can be 1.2, the refractive index of the support layer 300 can be 1.25, and the refractive index of the support layer 300 can be 1.3. By setting the refractive index of the second filter layer 510 to be greater than the refractive index of the first isolation layer 700, and using the low-refractive first isolation layer 700 and the high-refractive second filter layer 510, the light is reflected at the contact surface between the second filter layer 510 and the first isolation layer 700, so as to realize the convergence of the light. At the same time, the refractive index of the first encapsulation layer 400 is set to be greater than the refractive index of the support layer 300, and the low-refractive support layer 300 and the high-refractive first encapsulation layer 400 are used, so that the light is reflected at the contact surface between the first encapsulation layer 400 and the support layer 300, so as to realize the convergence of the light. Through twice light convergence, more forward light output can be realized.

[0153] For example, the thickness of the support layer can range from 1.5 μm to 2 μm. The side surface of the support layer 300 and the plane where the substrate layer 101 is located form a first included angle a, the first included angle a is an acute angle, and the angle of the first included angle a is greater than 30°.

[0154] For example, as shown in FIG. 6, the first encapsulation layer 400 can be arranged between the support layer 300 and the substrate layer 101. Figure 12 As shown, the first included angle a can be 60°, the first included angle a can be 70°, and the first included angle a can be 80°. The smaller the angle of the first included angle, the smaller the angle of the reflection surface formed on the surface of the support layer, and the better the convergence effect of the light with a large viewing angle.

[0155] Figure 13 FIG. 6 shows another schematic partial structure diagram of a display panel provided by an embodiment of the present application. For example, as shown in FIG. 6, the first encapsulation layer 400 can be arranged between the support layer 300 and the substrate layer 101. Figure 13As shown, in the case that the first filter layer 500 is arranged between the first encapsulation layer 400 and the second encapsulation layer 600, the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200, the second encapsulation layer 600 is arranged away from the substrate layer 101 side, the first isolation layer 700 and the protective layer 904 are arranged, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the refractive index of the first isolation layer 700, and the refractive index of the protective layer 904 can be the same. The refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the refractive index of the first isolation layer 700, and the refractive index of the protective layer 904 can be 1.4, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the refractive index of the first isolation layer 700, and the refractive index of the protective layer 904 can be 1.45, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the refractive index of the first isolation layer 700, and the refractive index of the protective layer 904 can be 1.5. The refractive index of the third encapsulation layer can be 1.6, the refractive index of the third encapsulation layer can be 1.65, and the refractive index of the third encapsulation layer can be 1.7. The refractive index of the first filter layer 500 can be 1.6, the refractive index of the first filter layer 500 can be 1.65, and the refractive index of the first filter layer 500 can be 1.7. The refractive index of the support layer 300 can be 1.2, the refractive index of the support layer 300 can be 1.25, and the refractive index of the support layer 300 can be 1.3. The refractive index of the first encapsulation layer 400 is less than the refractive index of the first filter layer 500, and the refractive index of the first encapsulation layer 400 is greater than the refractive index of the support layer 300. The refractive index difference between the first encapsulation layer 400 and the first filter layer 500 causes the light to be reflected at the contact surface between the first encapsulation layer 400 and the first filter layer 500, and the refractive index difference between the first encapsulation layer 400 and the support layer 300 causes the light to be reflected at the contact surface between the first encapsulation layer 400 and the support layer 300, thereby achieving the convergence of light with a larger viewing angle through twice reflection. The refractive index of the first encapsulation layer, the refractive index of the second encapsulation layer, the refractive index of the first isolation layer, and the refractive index of the protective layer are the same to avoid the refractive index difference between the film layers, change the light output direction, and affect the forward emission of the light.

[0156] In a second aspect, the present application provides a display panel, Figure 14 A schematic partial structure diagram of a display panel provided by the present application is shown. For example, Figure 14As shown, the display panel includes a driving substrate 100, a light emitting device layer 200, a second encapsulation layer 600, a first isolation layer 700 and a second filter layer 510. The driving substrate 100 includes a substrate layer 101 and a driving layer 102, and the driving layer 102 is arranged on one side of the substrate layer 101. The substrate layer 101 can be a flexible substrate or a hard substrate, and the driving layer 102 can include pixel circuits and driving circuits. The pixel circuits and the driving circuits of the driving layer 102 can be used to drive the light emitting device to emit light. The light emitting device layer 200 is arranged on the side of the driving layer 102 away from the first substrate 101, and the light emitting device layer 200 includes a pixel defining layer 201 and a light emitting layer 202. The pixel defining layer 201 includes a plurality of pixel openings 203, and the light emitting layer 202 is arranged in the pixel openings 203. The second encapsulation layer 600 is arranged on the side of the light emitting device layer 200 away from the substrate layer 101, and the second encapsulation layer 600 covers the light emitting device layer 200. The second encapsulation layer 600 can prevent water vapor from entering to prevent the light emitting device from short circuiting. The first isolation layer 700 is arranged on the side of the second encapsulation layer 600 away from the substrate layer 101. The first filter layer can be used to transmit light of a target wavelength band, and can achieve a filtering effect, filter out light of a target color, achieve high-brightness picture display color purity, and improve the display effect of the display panel. The second encapsulation layer 600 and the first isolation layer 700 can both be inorganic encapsulation layers, and the second filter layer 510 is arranged between the second encapsulation layer 600 and the first isolation layer 700. The inorganic encapsulation layer can prevent water vapor from entering to protect the spectrum of the second filter layer 510 from being changed by water vapor, which affects the filtering of the second filter layer 510. The refractive index of the second filter layer 520 is greater than the refractive index of the first isolation layer 700, so that a first refractive surface 710 is formed at the contact surface between the first isolation layer 700 and the side surface of the second filter layer 510. The large-view-angle light emitted by the light emitting layer 202 is refracted at the first refractive surface 710, and the large-view-angle light is concentrated to the display side, thereby improving the light extraction efficiency of the display panel.

[0157] The display panel provided by the embodiments of the present application arranges the second filter layer between the second encapsulation layer and the first isolation layer to prevent water vapor from entering and avoid changes in the spectrum on the surface of the second filter layer, which affects the filtering of the second filter layer. The refractive index of the second filter layer is greater than the refractive index of the first isolation layer, so that the normal-view-angle light and the large-view-angle light emitted by the light emitting layer are refracted at the contact surface between the first isolation layer with low refractive index and the second filter layer with high refractive index, and then the normal-view-angle light and the large-view-angle light emitted by the light emitting layer are concentrated to the normal field of view on the display side.

[0158] Exemplarily, the second filter layer 510 can be a patterned filter layer, the size of the second filter layer 510 close to the substrate layer 101 is greater than the size of the second filter layer 510 away from the substrate layer 101, that is, the second filter layer is a structure of narrow on the top and wide on the bottom, and the angle between the extension surface of the side surface of the second filter layer 510 and the plane where the substrate layer 101 is located can be an acute angle. The first isolation layer 700 covers the patterned filter layer 510, and the first isolation layer 700 can be locally raised, the film layer step difference formed by the first isolation layer 700 and the second filter layer 510, the height of the corresponding inclined surface of the first isolation layer 700 and the second filter layer 510 is extended, the area of the inclined surface is increased, and then the area of the reflection surface is increased, and the light extraction efficiency is improved. The refractive index of the first isolation layer 700 is set to be less than the refractive index of the second filter layer, so as to form the first refractive surface 710 at the contact surface between the first isolation layer 700 and the side surface of the second filter layer 510, so that the large-view-angle light emitted by the light-emitting layer 202 is refracted at the first refractive surface 710, and the large-view-angle light is gathered to the display side, and the light extraction efficiency of the display panel is improved.

[0159] Exemplarily, as shown in Figure 14 The ninth light S9 of large view angle emitted by the light-emitting layer 202 passes through the first refractive surface 710 to be refracted, so as to realize the gathering of the large-view-angle light emitted by the light-emitting layer.

[0160] The embodiment of the present application sets the size of the second filter layer close to the substrate layer to be greater than the size of the second filter layer away from the substrate layer, forms a patterned second filter layer, covers the first isolation layer on the inclined surface of the second filter layer, refracts at the contact surface between the first isolation layer filter layer with low refractive index and the second filter layer with high refractive index, sets the second filter layer between the second encapsulation layer and the first isolation layer to prevent water vapor from entering the second filter layer, filters the light of the target color while gathering the light, realizes high-brightness picture display, and improves the display effect of the display panel.

[0161] Exemplarily, the orthographic projection of the second filter layer 510 on the substrate layer 101 covers the orthographic projection of the pixel opening 203 on the substrate layer 101, and the orthographic projection of the second filter layer 510 on the substrate layer 101 and the orthographic projection of the pixel defining layer 201 on the substrate layer 101 are non-overlapping or partially overlapping. In the case that the orthographic projection of the second filter layer 510 on the substrate layer 101 and the orthographic projection of the pixel defining layer 201 on the substrate layer 101 are non-overlapping, the orthographic projection of the second filter layer 510 on the substrate layer 101 falls into the orthographic projection of the pixel opening 203 on the substrate layer 101, the refractive index of the second filter layer 510 is greater than the refractive index of the first isolation layer 700, so that the normal-view-angle light emitted by the light-emitting layer 202 is refracted at the contact surface between the second filter layer 510 and the first isolation layer 700, to realize the gathering of the normal-view-angle light emitted by the light-emitting layer.

[0162] Exemplarily, in a case where the orthogonal projection of the second filter layer 510 on the substrate layer partially overlaps with the orthogonal projection of the pixel defining layer 201 on the substrate layer 101, the orthogonal projection of the second filter layer 510 on the substrate layer falls partially on the orthogonal projection of the pixel defining layer 201 on the substrate layer, and the orthogonal projection of the second filter layer 510 on the substrate layer completely covers the orthogonal projection of the pixel opening 203 on the substrate layer, wherein the size of the second filter layer 510 close to the substrate layer 101 is greater than the size of the second filter layer 510 away from the substrate layer 101, and the refractive index of the second filter layer 510 is greater than the refractive index of the first isolation layer 700, so that the normal angle light and the large angle light emitted by the light emitting layer are refracted at the contact surface between the second filter layer 510 and the first isolation layer 700, and the normal angle light and the large angle light emitted by the light emitting layer 202 can be converged at the same time. While converging the light, the light emitted by the light emitting layer 202 can be filtered, the light of the target color can be filtered out, and high-brightness picture display can be realized.

[0163] In some embodiments, the display panel further comprises at least two inorganic layers, and the second filter layer can be arranged between the at least two inorganic layers.

[0164] Exemplarily, the first isolation layer 700 can comprise at least one inorganic layer, and the second encapsulation layer 600 can comprise at least one inorganic layer. The first isolation layer 700 can comprise two inorganic encapsulation layers, and the second encapsulation layer 600 can comprise two inorganic layers. The first isolation layer 700 can comprise multiple inorganic encapsulation layers, and the second encapsulation layer 600 can comprise multiple inorganic layers. By arranging the first filter layer 500 between the at least two inorganic layers, on the one hand, the water vapor can be prevented from entering the first filter layer, and the display effect can be affected. On the other hand, by adjusting the number of organic encapsulation layers and inorganic encapsulation layers, the distance between the light emitting layer and the first filter layer can be adjusted, and different display effects can be realized.

[0165] In some embodiments, the second filter layer 510 can transmit the organic film layer of the plurality of target light. By using one second filter layer 510 to replace the red, green and blue filter films prepared by the conventional three times process, the process steps are reduced, and the processing cost is reduced.

[0166] Exemplarily, the second filter layer 510 can comprise a film layer formed by mixing phase delay materials corresponding to red, green and blue wave bands. The light transmittance range of the first filter layer 500 can be 70% to 80%, and the second filter layer 510 can correspond to the transmission of a plurality of R (red), G (green) and B (blue) visible light wave bands to realize color picture display.

[0167] Exemplarily, the first filter layer 500 has a transmittance trough in the wavelength range of 480 nm to 530 nm and 580 nm to 630 nm, respectively.

[0168] Reference Figure 2 It can be seen that the first filter layer 500 has transmittance valleys in the wavelength range of 480nm to 530nm and in the wavelength range of 580nm to 630nm in the spectrum. Thereby, three peaks of wavelength 380nm to 480nm, wavelength 480nm to 580nm, and wavelength 630nm to 780nm transmittance can be obtained, the peak of wavelength 380nm to 480nm corresponds to the transmission of blue light, the peak of wavelength 480nm to 580nm corresponds to the transmission of green light, and the peak of wavelength 630nm to 780nm corresponds to the transmission of red light, so that the first filter layer can realize the transmission of light of three colors.

[0169] As shown in the example, Figure 2 As shown in the example, when the wavelength of the light emitted by the light-emitting layer 202 is 450nm, the second filter layer 510 can transmit blue light, and the transmittance of the second filter layer 510 is 75%; when the wavelength of the light emitted by the light-emitting layer 202 is 530nm, the second filter layer 510 can transmit green light, and the transmittance of the second filter layer 510 is 70%; and when the wavelength of the light emitted by the light-emitting layer 202 is 680nm, the first filter layer 500 can transmit red light, and the transmittance of the second filter layer 510 is 80%. The second filter layer 510 can simultaneously transmit light of red, green, and blue colors, and the phase delay material of the second filter layer 510 can filter out light of the corresponding target wavelength band, and light of other wavelength bands is absorbed by the second filter layer 510. Among them, the natural light incident on the second filter layer 510 from the external environment of the display panel avoids color mixing of the display side picture, thereby improving the picture quality of the display picture.

[0170] In some embodiments, the second filter layer 510 includes a plurality of filter regions, and the plurality of filter regions can be a plurality of red filter regions, green filter regions, and blue filter regions arranged alternately. The orthographic projection of the filter regions on the substrate layer covers the orthographic projection of the pixel openings on the substrate layer, wherein each filter region covers one pixel opening, the red filter region corresponds to the red light-emitting layer, the green filter region corresponds to the green light-emitting layer, and the blue filter region corresponds to the blue light-emitting layer. Different filter regions can be prepared by using phase delay materials of different target wavelengths. The light emitted by the light-emitting layer passes through different filter regions to emit light of different target wavelength bands, thereby avoiding color mixing of the display side picture, playing a filtering role, and improving the picture quality of the display picture.

[0171] As an example, the second filter layer 510 can be prepared by injecting a mixed solution of red, green, and blue materials on an acrylic plate, and can filter out light of the corresponding wavelength band.

[0172] Figure 15Another schematic partial structural view of a display panel is provided in the embodiments of the present application. As shown in Figure 15 The display panel further includes a first encapsulation layer 400, a third encapsulation layer 800, and a first filter layer 510. The first filter layer 500 can be a film layer covering the entire layer, and the second filter layer 510 can be made of the same material as the first filter layer 500. The first encapsulation layer 400 is arranged on the side of the light-emitting device layer 200 away from the substrate layer 101, and the second encapsulation layer 600 is arranged on the side of the first encapsulation layer 400 away from the substrate layer 101. Both the first encapsulation layer 400 and the second encapsulation layer can be inorganic encapsulation layers made of inorganic materials. The third encapsulation layer can be an organic encapsulation layer. The third encapsulation layer 800 is arranged between the first encapsulation layer 400 and the second encapsulation layer 600, and the first filter layer 500 is arranged between the third encapsulation layer 800 and the first encapsulation layer 400. An organic layer is arranged on the side of the third filter layer 520 close to the substrate layer 101. The first filter layer 500 made of organic material can reduce the difficulty of film processing. The organic first filter layer 510 and the organic third encapsulation layer 800 are arranged between the two inorganic layers, which can prevent water vapor from entering the first filter layer 510 and prevent the spectrum of the first filter layer 510 from changing. In addition, it can prevent water vapor from entering the light-emitting device layer and prevent the light-emitting device layer from short-circuiting, thereby improving the display effect and prolonging the service life of the display panel.

[0173] The thickness of the third encapsulation layer ranges from 4 μm to 12 μm. By adjusting the thickness of the third encapsulation layer, the deflection path of the light changes after the light passes through the third filter layer, which can achieve different display effects while ensuring that the light is emitted to the display side in a forward direction.

[0174] As shown in Figure 15 The first light S1 emitted by the light-emitting layer 202 passes through the first reflecting surface 410 and is refracted. The light S01 is obtained after the first light S1 passes through the first encapsulation layer 400, the first filter layer 500, the third encapsulation layer 800, and the second encapsulation layer 600 once.

[0175] As shown in Figure 15 The second light S2 emitted by the light-emitting layer 202 passes through the second reflecting surface 310 and is reflected. The light S02 is obtained after the second light S2 passes through the support layer 300, the first encapsulation layer 400, the first filter layer 500, the third encapsulation layer 800, and the second encapsulation layer 600 in sequence.

[0176] The first filter layer can be used to transmit light of a target waveband, which can achieve a filtering effect, filter out light of a target color, achieve high-brightness picture display color purity, and improve the display effect of the display panel.

[0177] Exemplarily, the display panel can be provided with the first filter layer 500 and the second filter layer 510 simultaneously, the large visual angle light emitted by the light-emitting layer 202 firstly passes through the contact surface between the first filter layer 500 and the first encapsulation layer 400 to concentrate the light once, and then passes through the contact surface between the second filter layer 510 and the first isolation layer 700 to concentrate the light once, the two filter layers are provided to filter the light twice and concentrate the light twice, so that the display effect with high brightness and high quality is realized. The refractive index difference between the first filter layer 500 and the first encapsulation layer 400 causes the large visual angle light to be emitted to the normal visual angle direction by reflection and refraction, so as to improve the light-emitting device light-emitting efficiency at the normal visual angle, for display.

[0178] Exemplarily, as shown in Figure 15 , the display panel further comprises a support layer 300, which is arranged between the pixel definition layer 201 and the first encapsulation layer 400. By arranging the support structure 300, the film layer step difference formed by the support layer 300 and the pixel definition layer 201 can be raised, the height of the corresponding inclined surface of the support layer 300 and the pixel definition layer 201 can be extended, the area of the inclined surface can be increased, and then the area of the reflecting surface can be increased, so as to improve the light-emitting efficiency.

[0179] Exemplarily, the support layer 300 can be arranged in the same layer as the support column of the display panel, and the support column and the support layer 300 can also be used to support the light-emitting device to avoid damage of the light-emitting device under external pressure and affect the light-emitting of the display panel.

[0180] Exemplarily, as shown in Figure 5 , the display panel further comprises a third encapsulation layer 800 and a third filter layer 520. The third encapsulation layer is arranged between the first encapsulation layer 400 and the second encapsulation layer 600. The third encapsulation layer 800 can comprise one organic layer, two organic layers, or multiple organic layers, and the number of organic layers can be adjusted according to actual display requirements, so that the light-emitting angle of the light passing through the third encapsulation layer 800 changes to realize different display effects. The third filter layer 520 can comprise R, G and B organic filter materials mixed together, and the third filter layer 520 can transmit light of corresponding wave bands to realize picture display.

[0181] Exemplarily, as shown in Figure 5As shown, the first filter layer 500, the second filter layer 510, and the third filter layer 520 can be made of the same material. The third encapsulation layer 800 can be disposed between the first encapsulation layer 400 and the second encapsulation layer 600, and the third filter layer 520 can be disposed between the third encapsulation layer 800 and the second encapsulation layer 600. The orthographic projection of the third filter layer 520 on the substrate layer 101 overlaps the orthographic projection of the light-emitting device layer 200 on the substrate layer 101. At the same time, the orthographic projection of the third filter layer 520 on the substrate layer 101 overlaps the orthographic projection of the third encapsulation layer 800 on the substrate layer 101. The third filter layer can be a filter layer disposed as a whole layer. The first encapsulation layer 400 and the second encapsulation layer 600 are inorganic encapsulation layers, and the third encapsulation layer 800 is an organic encapsulation layer. An organic layer is arranged on the side of the third filter layer 520 close to the substrate layer 101. A third filter layer 520 composed of an organic material is prepared on the organic material, which can reduce the difficulty of film processing. The third filter layer 520 of organic material and the organic third encapsulation layer 800 are then arranged between the two inorganic layers. On the one hand, this can protect the third filter layer 520 from water vapor intrusion and prevent the spectrum of the third filter layer 520 from changing. On the other hand, it can prevent water vapor from intruding into the light-emitting device layer, prevent the light-emitting device layer from short-circuiting, improve the display effect and extend the service life of the display panel.

[0182] For example, Figure 6 As shown, the third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700. The orthographic projection of the first isolation layer on the substrate layer 101 covers the orthographic projection of the third filter layer 520 on the substrate layer 101. The third filter layer can be a single layer. The first isolation layer 700 and the second encapsulation layer 600 are inorganic layers. Positioning the third filter layer between the two inorganic layers protects the third filter layer 520 from moisture intrusion, preventing changes in the spectrum of the third filter layer 520 and improving display quality.

[0183] In some examples, the display panel may include a third filter layer 520 disposed between the second encapsulation layer 600 and the first isolation layer 700 and between the third encapsulation layer 800 and the second encapsulation layer 600 .

[0184] For example, when the third filter layer 520 is disposed between the second encapsulation layer 600 and the first isolation layer 700, or between the third encapsulation layer 800 and the second encapsulation layer 600, the first encapsulation layer, the second encapsulation layer, and the first isolation layer all function to isolate moisture. In this case, the wide-angle light emitted by the light-emitting layer is focused by the first reflective surface, allowing the display panel to achieve high-quality display while improving protection for the filter layer and the light-emitting device layer, thereby enhancing the reliability and display quality of the display panel.

[0185] It should be noted that the materials of the third filter layer 520, the second filter 510 and the first filter layer 500 can be the same, the spectra of the third filter layer 520, the second filter 510 and the first filter layer 500 can be the same, and all can realize the transmission of red, green and blue light.

[0186] As shown in the example, Figure 7 The display panel further includes a touch layer 900, the touch layer 900 is disposed on the side of the third filter layer 520 away from the substrate layer 101, the touch layer 900 is disposed on the side of the second encapsulation layer away from the substrate layer 101, and the touch layer 900 includes a first touch electrode 901 and a second touch electrode 902. The first touch electrode 901 is disposed on the side of the second encapsulation layer 600 away from the substrate layer 101, the second touch electrode 902 is disposed on the side of the first touch electrode 901 away from the substrate layer 101, and a first isolation layer 700 is disposed between the first touch electrode 901 and the second touch electrode 902.

[0187] As shown in the example, Figure 7 The display panel further includes a light shielding layer 903 and a protective layer 904, the light shielding layer 903 is disposed on the side of the second touch electrode 902 away from the substrate layer 101, and the protective layer 904 is disposed on the side of the light shielding layer 903 away from the substrate layer 101. The refractive index of the first isolation layer 700 can be less than the refractive index of the protective layer 904, and the light is emitted to the display side in a divergent state. The refractive index of the first isolation layer 700 can be greater than the refractive index of the protective layer 904, and the light is emitted to the display side in a convergent state. By setting the difference between the refractive index of the first isolation layer 700 and the refractive index of the protective layer 904, the light direction can be changed to achieve different display effects. The orthographic projection of the light shielding layer 903 on the substrate layer 101 covers the orthographic projection of the first touch electrode 901 and the second touch electrode 902 on the substrate layer 101, and the light shielding layer 903 completely covers the touch electrode, which can avoid the reflection of natural light by the touch electrode and affect the display effect. The orthographic projection of the light shielding layer 903 on the substrate layer 101 does not overlap with the orthographic projection of the pixel opening 203 on the substrate layer 101, so as to avoid shielding the normal viewing angle light emitted by the light-emitting layer.

[0188] As shown in the example, Figure 8As shown, the second filter layer 510 can be arranged between the first isolation layer 700 and the second encapsulation layer 600, the light shielding layer 903 is arranged on the side of the first isolation layer 700 away from the substrate layer 101, the projection boundary of the light shielding layer 903 on the substrate layer 101 overlaps the side surface of the first isolation layer 700 on the substrate layer 101, and the projection of the light shielding layer 903 on the substrate layer 101 does not overlap the projection of the second filter layer 510 on the substrate layer 101, so as to avoid affecting the second filter layer and the first encapsulation layer, and meet the light shielding and touch functions.

[0189] For example, the first isolation layer 700 serves as an insulating layer of the first touch electrode 901 and the second touch electrode 902. The second filter layer 510 can be arranged between the first isolation layer 700 and the second encapsulation layer 600, and the third filter layer 520 can be arranged between the first isolation layer 700 and the second encapsulation layer 600. By arranging the filter layer between the two inorganic layers, the protection of the filter layer is realized.

[0190] For example, as shown in the first encapsulation layer 400 is arranged on the support layer 300, and the second electrode is arranged above the pixel opening 203. Figure 9 As shown, the support layer 300 includes a plurality of first hollows, the projection of the first hollow 301 on the substrate layer 101 covers the projection of the pixel opening 201 on the substrate layer 101, and the first hollow communicates with the pixel opening. The normal angle light emitted by the light emitting layer 202 is directly emitted to the display side through the first hollow 301. The light emitting device layer 200 includes a first electrode 205 and a second electrode 206, the first electrode 205 is arranged on the side close to the substrate layer 101, and the second electrode 206 is arranged on the side away from the substrate layer 101. The light emitting layer 202 is located between the first electrode 205 and the second electrode 206, and the first electrode 205 and the second electrode 206 jointly drive the light emitting layer 202 to emit light.

[0191] For example, as shown in the first encapsulation layer 400 is arranged on the support layer 300, and the second electrode is arranged above the pixel opening 203. Figure 9 As shown, the first encapsulation layer 400 is connected with the support layer 300, the first encapsulation layer 400 covers the support layer 300, and the second electrode is arranged directly above the pixel opening 203. The projection of the second electrode 206 on the substrate layer 101 does not overlap the projection of the support layer 300 on the substrate layer 101, and the projection of the second electrode 206 on the substrate layer 101 overlaps the projection of the pixel opening 203 on the substrate layer 101. The refractive index of the first encapsulation layer 400 is greater than the refractive index of the support layer 300, so that the large-angle light emitted by the light emitting layer 202 is reflected through the contact surface between the support layer 300 and the first encapsulation layer 400, and the large-angle light is gathered to the display side.

[0192] For example, the second electrode 206 can be a cathode of the light emitting device, and the first electrode 205 can be an anode of the light emitting device.

[0193] For example, Figure 10 As shown, the second electrode 206 is disposed between the support layer 300 and the first encapsulation layer 400. The orthographic projection of the second electrode 206 on the substrate layer 101 covers the orthographic projection of the light-emitting device layer 200 on the substrate layer, and the orthographic projection of the first encapsulation layer 400 on the substrate layer 101 covers the second electrode 206. The refractive index of the second electrode is greater than that of the support layer 300, and the refractive index of the second electrode 206 is less than that of the first encapsulation layer 400. A third reflective surface 320 is formed at the interface between the second electrode 206 and the support layer 300, and a fourth reflective surface 420 is formed at the interface between the first encapsulation layer 400 and the second electrode 206. A portion of the wide-angle light emitted by the light-emitting layer 202 is reflected once at the interface between the support layer 300 and the second electrode 206, and a portion of the wide-angle light emitted by the light-emitting layer 202 is reflected once at the interface between the second electrode 206 and the first encapsulation layer 400. The angle of light incident on the interface between the support layer 300 and the second electrode 206 is greater than the angle of light incident on the interface between the second electrode 206 and the first encapsulation layer 400. By arranging the orthographic projection of the second electrode 206 on the substrate layer 101 to cover the orthographic projection of the light-emitting device layer 200 on the substrate layer, two reflections are performed at the light-emitting device layer, which can gather more light with a wide viewing angle and improve the light extraction efficiency of the display panel.

[0194] For example, Figure 10 As shown, the fifth light S5 with a wide viewing angle emitted by the light emitting layer 202 is reflected by the third reflective surface 320 , and the sixth light S6 with a wide viewing angle emitted by the light emitting layer 202 is reflected by the fourth reflective surface 420 .

[0195] In some embodiments, a portion of the orthographic projection of the supporting layer 300 on the substrate layer 101 falls within the orthographic projection of the pixel definition layer 201 on the substrate layer 101, or a portion of the orthographic projection of the pixel definition layer 201 on the substrate layer 101 falls within the orthographic projection of the supporting layer 300 on the substrate layer 101. A boundary of the orthographic projection of the supporting layer 300 on the substrate layer 101 is spaced apart from a boundary of the orthographic projection of the pixel definition layer 201 on the substrate layer 101.

[0196] For example, Figure 11As shown, the orthographic projection of the pixel defining layer 201 on the substrate layer 101 falls within the orthographic projection of the support layer 300 on the substrate layer 101, the support layer 300 completely covers the pixel defining layer 201, and the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to completely cover the pixel defining layer 201, the support layer 300 is prepared on the basis of the pixel defining layer 201, and the thickness of the support layer 300 is increased. The greater the thickness of the support layer 300, the longer the plane where the first hollow inner wall is located, and the greater the contact surface formed between the support layer 300 and the adjacent film layer, the more large-view-angle light rays that can be reflected, and the higher the light extraction efficiency of the display panel.

[0197] As shown in FIG. 1, the display panel 100 includes a substrate layer 101, a pixel defining layer 201, a support layer 300, a first encapsulation layer 400, and a light-emitting device layer 200. Figure 12 As shown, the orthographic projection of the support layer 300 on the substrate layer 101 falls within the orthographic projection of the pixel defining layer 201 on the substrate layer 101, the support layer 300 partially covers the pixel defining layer 201, and the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to partially cover the pixel defining layer 201, the support layer 300 can cover at least part of the surface of the pixel defining layer 201 away from the substrate layer 101, so that the angle of the support layer light rays incident on the first hollow inner wall is greater than the angle of the light rays incident on the side surface of the pixel defining layer 201. The inner recessed profile of the support layer 300 forms a stepped structure with the pixel defining layer 201, increases the area of the inclined surface, and further increases the area of the reflecting surface, so that the large-view-angle light rays are gradient-reflected, more large-view-angle light rays are gathered, and the light extraction efficiency of the display panel is improved.

[0198] As shown, the orthographic projection of the support layer 300 on the substrate layer 101 falls within the orthographic projection of the pixel defining layer 201 on the substrate layer 101, the support layer 300 completely covers the pixel defining layer 201, and the first encapsulation layer 400 covers the support layer 300 and the light-emitting device layer 200. By setting the support layer 300 to completely cover the pixel defining layer 201, the support layer 300 is prepared on the basis of the pixel defining layer 201, and the thickness of the support layer 300 is increased. The greater the thickness of the support layer 300, the longer the plane where the first hollow inner wall is located, and the greater the contact surface formed between the support layer 300 and the adjacent film layer, the more large-view-angle light rays that can be reflected, and the higher the light extraction efficiency of the display panel.

[0199] As shown in FIG. 1, the display panel 100 includes a substrate layer 101, a pixel defining layer 201, a support layer 300, a first encapsulation layer 400, and a light-emitting device layer 200. Figure 12 As shown, the first hollow inner wall of the support layer 300 includes at least two stepped surfaces. The first stepped surface 311 is formed on the plane of the pixel defining layer 201 close to the support layer 300, and the second stepped surface 312 is formed on the side surface of the support layer 300. The first stepped surface 311 is used to reflect the light rays leaked from the contact plane of the support layer and the pixel defining layer 201, and the second stepped surface 312 is used to reflect the large-view-angle light rays emitted from the light-emitting layer 202.

[0200] As shown in FIG. 1, the display panel 100 includes a substrate layer 101, a pixel defining layer 201, a support layer 300, a first encapsulation layer 400, and a light-emitting device layer 200. Figure 12As shown, the first hollowed inner wall of the support layer 300 can further include a third stepped surface 313 formed on the side surface of the pixel defining layer 201. The first stepped surface 311 and the third stepped surface 313 arranged adjacently can form a stepped structure, and the second stepped surface 312 and the third stepped surface 313 arranged adjacently can form a stepped structure. The extension surface of the first stepped surface 311 and the extension surface of the third stepped surface 313 can both intersect with the plane where the substrate layer 101 is located, and the second stepped surface 312 is parallel to the plane where the substrate layer 101 is located. By arranging at least two stepped surfaces on the first hollowed inner wall, the leakage of light at large viewing angles can be effectively avoided.

[0201] For example, the thickness of the support layer 300 is greater than or equal to the thickness of the pixel defining layer 201, the thickness direction is perpendicular to the plane where the substrate layer 101 is located, the pixel defining layer is black, and the light transmittance of the pixel defining layer 201 is less than the light transmittance of the support layer 300. By arranging the thickness of the support layer 300 to be greater than or equal to the thickness of the pixel defining layer 201, on the one hand, the support layer can provide better support for the light emitting device layer 200, thereby improving the pressure resistance of the display panel, and on the other hand, the length of the contact surface formed between the support layer 300 and the adjacent film layer is extended, and more large-viewing-angle light is reflected.

[0202] For example, as shown in the figure, Figure 12 For example, the thickness of the support layer can range from 1.5 μm to 2 μm. The side surface of the support layer 300 and the plane where the substrate layer 101 is located form a first included angle a, the first included angle a is an acute angle, and the angle of the first included angle a is greater than 30°. For example, the first included angle a can be 60°, the first included angle a can be 70°, and the first included angle a can be 80°. The smaller the angle of the first included angle a, the smaller the angle of the reflection surface, and the better the effect of gathering large-viewing-angle light.

[0203] In some embodiments, the refractive index of the first encapsulation layer ranges from 1.4 to 1.5, the refractive index of the second encapsulation layer ranges from 1.4 to 1.5, the refractive index of the third encapsulation layer ranges from 1.6 to 1.7, the refractive index of the support layer ranges from 1.2 to 1.3, the refractive index of the second filter layer ranges from 1.6 to 1.7, the refractive index of the first filter layer ranges from 1.6 to 1.7, the refractive index of the third filter layer ranges from 1.6 to 1.7, and the refractive index of the first isolation layer ranges from 1.4 to 1.5.

[0204] For example, the thickness of the first filter layer ranges from 2.5 μm to 3.5 μm, the thickness of the second filter layer ranges from 2.5 μm to 3.5 μm, and the thickness of the third filter layer ranges from 2.5 μm to 3.5 μm. The thickness of the filter layer can be adjusted according to the actual display requirements to adapt to different display effects. This application will not be described one by one.

[0205] For example, Figure 13 As shown, in the case where the first filter layer 500 is arranged between the first packaging layer 400 and the second packaging layer 600, the first packaging layer 400 covers the support layer 300 and the light-emitting device layer 200, the second packaging layer 600 is away from the substrate layer 101 side, the first isolation layer 700 and the protective layer 904, the refractive index of the first packaging layer 400, the refractive index of the second packaging layer 600, the refractive index of the first isolation layer 700, and the refractive index of the protective layer 904 can be set to be the same. In the case of the first isolation layer 700 and the protective layer 904, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the first isolation layer 700, and the refractive index of the protective layer 904 can all be set to 1.4. In the case of the first isolation layer 700 and the protective layer 904, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the first isolation layer 700, and the refractive index of the protective layer 904 can all be set to 1.45. In the case of the first isolation layer 700 and the protective layer 904, the refractive index of the first encapsulation layer 400, the refractive index of the second encapsulation layer 600, the first isolation layer 700, and the refractive index of the protective layer 904 can all be set to 1.5. The refractive index of the third encapsulation layer 800 is 1.6, the refractive index of the third encapsulation layer 800 is 1.65, and the refractive index of the third encapsulation layer 800 is 1.7. The refractive index of the first filter layer 500 can be 1.6, 1.65, or 1.7. The refractive index of the support layer 300 can be 1.2, 1.25, or 1.3. The refractive index of the first encapsulation layer 400 is lower than that of the first filter layer 500, and the refractive index of the first encapsulation layer 400 is higher than that of the support layer 300. The refractive index difference between the first encapsulation layer 400 and the first filter layer 500 is utilized to cause light to reflect at the interface between the first encapsulation layer 400 and the first filter layer 500, and the refractive index difference between the first encapsulation layer 400 and the support layer 300 is utilized to cause light to reflect at the interface between the first encapsulation layer 400 and the first filter layer 500. This double reflection allows light to converge at a wider viewing angle. The refractive index of the first encapsulation layer, the refractive index of the second encapsulation layer, and the refractive index of the protective layer are set to be equal to the refractive index of the first isolation layer to avoid the refractive index difference between the film layers, changing the light emitting direction and affecting the forward emission of the light.

[0206] For example, Figure 3As shown, in the case that the second filter layer 510 is arranged between the second encapsulation layer 600 and the first isolation layer 700, and the size of the second filter layer 510 close to the substrate layer 101 is greater than the size of the second filter layer 510 away from the substrate layer 101, the refractive index of the second filter layer 510 can be 1.6, the refractive index of the second filter layer 510 can be 1.65, and the refractive index of the second filter layer 510 can be 1.7. The refractive index of the first isolation layer 700 can be 1.4, the refractive index of the first isolation layer 700 can be 1.45, and the refractive index of the first isolation layer 700 can be 1.5. The refractive index of the support layer 300 can be 1.2, the refractive index of the support layer 300 can be 1.25, and the refractive index of the support layer 300 can be 1.3. By setting the refractive index of the second filter layer 510 to be greater than the refractive index of the first isolation layer 700, and using the low-refractive first isolation layer 700 and the high-refractive second filter layer 510, the light is reflected at the contact surface between the second filter layer 510 and the first isolation layer 700, so as to realize the convergence of the light. At the same time, by setting the refractive index of the first encapsulation layer 400 to be greater than the refractive index of the support layer 300, and using the low-refractive support layer 300 and the high-refractive first encapsulation layer 400, the light is reflected at the contact surface between the first encapsulation layer 400 and the support layer 300, so as to realize the convergence of the light. Through the convergence of the light twice, more forward light output can be realized.

[0207] In a third aspect, the present application provides a display device, Figure 16 A schematic structural diagram of a display device is provided in the present application. Figure 16 As shown, the display device 2000 includes the display panel 1000 of the first aspect or the display panel 1000 of the second aspect.

[0208] In the present application, the first filter layer is arranged between the first encapsulation layer and the second encapsulation layer, so as to prevent the moisture from entering and avoid the change of the spectrum on the surface of the first filter layer, thereby affecting the light filtering of the first filter layer. The support layer has a plurality of first hollows, and the inner wall of the first hollow is formed with an inclined surface. The first filter layer and the first encapsulation layer are both covered on the inclined surface, so that the large-view-angle light emitted by the light-emitting layer is reflected at the contact surface between the high-refractive first filter layer and the low-refractive first encapsulation layer, and then the large-view-angle light emitted by the light-emitting layer is converged to the normal field of view on the display side. By arranging the first filter layer between the first encapsulation layer and the second encapsulation layer, forming the inclined surface on the support layer, and setting the refractive index of the first filter layer to be greater than the refractive index of the first encapsulation layer, the light can be converged while the light emitted by the light-emitting layer is filtered, and the light of the target color is filtered out, so as to realize the high-brightness picture display and improve the display effect of the display panel.

[0209] For example, the display panel manufacturing process can be to sequentially manufacture a driving substrate, a light emitting device layer, a support layer and an encapsulation layer. The driving substrate can be to manufacture an electrode layer on a substrate by exposure and development, and a plurality of electrode layers such as a gate electrode, a source electrode and a drain electrode can be electrically connected to form a driving circuit and a pixel circuit for driving the light emitting layer to emit light. A pixel defining layer can also be formed by exposure and development, and the support layer is formed by exposure and development. The encapsulation layer can be manufactured by an evaporation process to manufacture an inorganic encapsulation layer, and by an inkjet printing process to manufacture an organic encapsulation layer. The filter layer can be manufactured by a coating, exposure and development process to fill the light emitting device layer.

[0210] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0211] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0212] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.

[0213] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A display panel, characterized in that: include: A driving substrate, comprising a substrate layer and a driving layer, wherein the driving layer is disposed on one side of the substrate layer; a light-emitting device layer, disposed on a side of the driving layer away from the substrate layer, the light-emitting device layer comprising a pixel defining layer and a light-emitting layer, the pixel defining layer comprising a plurality of pixel openings, and the light-emitting layer being disposed in the pixel openings; a support layer, disposed on a side of the pixel defining layer away from the substrate layer, the support layer comprising a plurality of first hollows, wherein the orthographic projections of the first hollows on the substrate layer cover the orthographic projections of the pixel openings on the substrate layer; a first encapsulation layer, disposed on a side of the light-emitting device layer and the support layer away from the substrate layer; A first filter layer is arranged on a side of the first packaging layer away from the substrate layer, the orthographic projection of the first filter layer on the substrate layer covers the orthographic projections of the first hollow and the pixel opening on the substrate layer, and the refractive index of the first filter layer is greater than the refractive index of the first packaging layer.

2. The display panel according to claim 1, wherein: Also includes: There are at least two inorganic layers, and the first filter layer is disposed between the at least two inorganic layers.

3. The display panel according to claim 2, wherein: The first filter layer is used for transmitting light of multiple target wavelength bands.

4. The display panel according to claim 3, wherein: The light transmission spectrum of the first filter layer has transmittance valleys in the wavelength ranges of 480 nm to 530 nm and 580 nm to 630 nm.

5. The display panel according to claim 2, wherein: The first filter layer includes a plurality of filter areas, wherein at least two of the filter areas are configured to transmit light of different target wavelength bands; The orthographic projection of the filter region on the substrate layer covers the orthographic projection of the pixel opening on the substrate layer.

6. The display panel according to claim 1, wherein: Also includes: The second encapsulation layer is arranged on a side of the first filter layer away from the substrate layer. The first encapsulation layer includes at least one inorganic layer, and / or the second encapsulation layer includes at least one inorganic layer.

7. The display panel according to claim 6, wherein: Also includes: a first isolation layer, disposed on a side of the second encapsulation layer away from the substrate layer, the first isolation layer comprising at least one inorganic layer; The second filter layer is arranged between the second packaging layer and the first isolation layer. The size of the second filter layer close to the substrate layer is larger than the size of the second filter layer away from the substrate layer. The refractive index of the second filter layer is greater than the refractive index of the first isolation layer.

8. The display panel according to claim 6 or 7, characterized in that: Also includes: a third encapsulation layer, disposed between the first filter layer and the second encapsulation layer, the third encapsulation layer comprising an organic layer; a first isolation layer, disposed on a side of the second encapsulation layer away from the substrate layer, the first isolation layer comprising at least one inorganic layer; a third filter layer, wherein the orthographic projection of the third filter layer on the substrate layer covers the orthographic projection of the light-emitting device layer on the substrate layer; The third filter layer is disposed between the second encapsulation layer and the first isolation layer; and / or, The third filter layer is disposed between the second packaging layer and the third packaging layer.

9. The display panel according to claim 7, wherein: Also includes: a touch layer, the touch layer being disposed on a side of the second encapsulation layer away from the substrate layer, the touch layer comprising a first touch electrode, a second touch electrode, a light shielding layer, and a protective layer, wherein the protective layer comprises at least one organic layer; The first isolation layer is provided between the first touch electrode and the second touch electrode, the first touch electrode is provided between the second encapsulation layer and the first isolation layer, the light shielding layer is provided between the second touch electrode and the protective layer, and the refractive index of the first isolation layer is smaller than the refractive index of the protective layer; The orthographic projection of the light shielding layer on the substrate layer covers the orthographic projections of the first touch electrode and the second touch electrode on the substrate layer, and the orthographic projection of the light shielding layer on the substrate layer does not overlap with the orthographic projection of the pixel opening on the substrate layer.

10. The display panel according to claim 7, wherein: The light-emitting device layer includes a first electrode and a second electrode, the light-emitting layer is located between the first electrode and the second electrode, a portion of the first encapsulation layer is connected to the support layer, and the refractive index of the first encapsulation layer is greater than the refractive index of the support layer; There is a case where part of the second electrode is located between the support layer and the first encapsulation layer, the refractive index of the second electrode is greater than the refractive index of the support layer, and the refractive index of the second electrode is less than the refractive index of the first encapsulation layer.

11. The display panel according to claim 1, wherein At least a portion of the orthographic projection of the support layer on the substrate layer falls within the orthographic projection of the pixel definition layer on the substrate layer; and / or, At least a portion of the orthographic projection of the pixel definition layer on the substrate layer falls within the orthographic projection of the support layer on the substrate layer; The orthographic projection boundary of the support layer on the substrate layer is spaced apart from the orthographic projection boundary of the pixel definition layer on the substrate layer.

12. The display panel according to claim 11, wherein: The thickness of the supporting layer is greater than or equal to the thickness of the pixel defining layer, the thickness direction is perpendicular to the plane where the substrate layer is located, and the transmittance of the pixel defining layer is less than the transmittance of the supporting layer.

13. The display panel according to claim 12, wherein: The first hollow inner wall includes at least two step surfaces, two adjacent step surfaces are used to form a step structure, and an extended surface of at least one step surface intersects with the plane where the substrate layer is located.

14. A display panel, characterized in that: include: A driving substrate, comprising a substrate layer and a driving layer, wherein the driving layer is disposed on one side of the substrate layer; a light-emitting device layer, disposed on a side of the driving layer away from the substrate layer, the light-emitting device layer comprising a pixel defining layer and a light-emitting layer, the pixel defining layer comprising a plurality of pixel openings, and the light-emitting layer being disposed in the pixel openings; a second encapsulation layer, disposed on a side of the light-emitting device layer away from the substrate layer, the second encapsulation layer covering the light-emitting device layer; a first isolation layer, the first isolation layer being arranged on a side of the second encapsulation layer away from the substrate layer; A second filter layer is arranged between the second encapsulation layer and the first isolation layer, the orthographic projection of the second filter layer on the substrate layer covers the orthographic projection of the pixel opening on the substrate layer, the orthographic projection of the second filter layer on the substrate layer has no overlap or partially overlaps with the orthographic projection of the pixel defining layer on the substrate layer, and the refractive index of the second filter layer is greater than the refractive index of the first isolation layer.

15. A display device, characterized in that: include: The display panel according to any one of claims 1 to 14.

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