Display panel, manufacturing method of display panel and display device

Abstract

The invention provides a display panel, a manufacturing method of the display panel and a display device, the display panel comprises a cover plate, an isolation part and a filter layer, the isolation part defines a plurality of openings, and the filter layer comprises filter units located in the openings; wherein the isolation part comprises a first isolation layer, a second isolation layer and a shading part; the first isolation layer and the second isolation layer are stacked in the direction away from the cover plate of the substrate, and at least part of the shading part is arranged on the side, away from the cover plate, of the second isolation layer; part of the shading part covers the side wall of the second isolation layer towards at least one opening; wherein the second isolation layer and the shading part are made of different materials. The first isolation layer and the second isolation layer are stacked, have a filtering effect and can replace a part of the shading part, so that the height of the shading part is reduced, and the yield is improved.

Description

Technical Field

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

[0002] Quantum dot (QD) materials have the advantages of high luminescent color purity, adjustable luminescent wavelength, and stable materials, and have significant advantages in the field of pursuing high color gamut color display.

[0003] QLED (quantum-dots light emitting diodes) is a new type of light-emitting device. Quantum dot light-emitting diodes (QLED) are gradually becoming one of the mainstream development directions of display technology in the future due to their self-luminous properties that do not require additional light sources, as well as their advantages such as narrow luminous peak, adjustable luminous color, and high luminous efficiency.

[0004] However, the process performance of current display products needs to be improved. Summary of the invention

[0005] The embodiments of the present application provide a display panel, a method for manufacturing a display panel, and a display device, aiming to improve the process performance of display products.

[0006] An embodiment of the first aspect of the present application provides a display panel, comprising: a cover plate, an isolation portion and a filter layer, wherein the isolation portion is arranged on one side of the cover plate, and the isolation portion encloses a plurality of openings; the filter layer comprises a filter unit located in the opening; wherein the isolation portion comprises a first isolation layer, a second isolation layer and a shading portion; the first isolation layer and the second isolation layer are stacked in a direction away from the cover plate, and at least part of the shading portion is arranged on a side of the second isolation layer away from the cover plate; part of the shading portion covers the side wall of the second isolation layer facing at least one opening; wherein the second isolation layer and the shading portion are made of different materials.

[0007] According to an embodiment of the present application, the opening includes a first opening and a second opening; the filter unit includes a first filter unit located in the first opening and a second filter unit located in the second opening; the material of the first isolation layer is the same as the material of the first filter unit, and the material of the second isolation layer is the same as the material of the second filter unit; a partial shading portion covers the side wall of the second isolation layer facing the second opening.

[0008] According to an embodiment of the present application, part of the light shielding portion covers the side wall of the second isolation layer facing away from the first opening.

[0009] According to an embodiment of the present application, the opening further includes a third opening, the filter unit further includes a third filter unit located in the third opening, and the second filter unit and the third filter unit are made of the same material.

[0010] According to an embodiment of the present application, the first isolation layer is adjacent to the third filter unit.

[0011] According to an embodiment of the present application, the first isolation layer is adjacent to the second filter unit.

[0012] According to an embodiment of the present application, the light shielding portion covers a side wall of the second isolation layer facing the third opening.

[0013] According to an embodiment of the present application, the first filter unit is a blue filter unit, which is configured to transmit blue light, and the second and third filter units are yellow filter units, which are configured to transmit red light and green light.

[0014] According to an embodiment of the present application, the display panel further includes a light conversion layer, and the light conversion layer includes a light conversion unit located on a side of each filter unit away from the cover plate.

[0015] According to an embodiment of the present application, each light conversion unit is located in each opening.

[0016] According to an embodiment of the present application, the light conversion unit includes a red light conversion unit, a green light conversion unit and a blue light transmission unit, the blue light transmission unit is arranged on a side of the first filter unit away from the cover plate, the red light conversion unit is arranged on a side of the second filter unit or the third filter unit away from the cover plate, and the green light conversion unit is arranged on a side of the other of the second filter unit or the third filter unit away from the cover plate.

[0017] According to an embodiment of the present application, a light-emitting substrate is provided on the side of the light conversion unit facing away from the cover plate, the light-emitting substrate is used to emit blue light, the red light conversion unit is configured to emit red light under the excitation of blue light, the green light conversion unit is configured to emit green light under the excitation of blue light, and the blue light transmission unit is used to transmit blue light.

[0018] According to an embodiment of the present application, the material of the light conversion unit includes quantum dot material.

[0019] According to an embodiment of the present application, the light shielding portion covers the side walls of the first isolation layer and the second isolation layer facing the second opening.

[0020] According to an embodiment of the present application, a first filter unit is disposed on a side of the isolation unit facing the first opening, and the material of the first filter unit is the same as that of the second filter unit.

[0021] According to an embodiment of the present application, the first filter portion is disposed on a side of the second isolation layer facing the first opening.

[0022] According to an embodiment of the present application, there is a gap between the first isolation layer and the first filter unit, the second isolation layer includes a first sub-portion and a second sub-portion, the first sub-portion is located on the side of the first isolation layer away from the cover plate, and the second sub-portion is located in the gap.

[0023] According to an embodiment of the present application, the first subsection is connected to the second subsection.

[0024] According to an embodiment of the present application, the gap and the second sub-portion in the gap are arranged around the first filter unit.

[0025] In a second aspect, the present application provides a method for manufacturing a display panel, comprising:

[0026] Provide cover plate;

[0027] An isolation portion and a filter layer are formed on one side of the cover plate, the isolation portion encloses a plurality of openings, the filter layer includes a filter unit located in the opening, the isolation portion includes a first isolation layer, a second isolation layer and a shading portion, the first isolation layer and the second isolation layer are stacked in a direction away from the cover plate, at least part of the shading portion is arranged on a side of the second isolation layer away from the cover plate; part of the shading portion covers the side wall of the second isolation layer facing at least one opening, and the second isolation layer and the shading portion are made of different materials.

[0028] According to an embodiment of the present application, the filter unit includes a first filter unit, a second filter unit and a third filter unit, the opening includes a first opening, a second opening and a third opening, and the step of forming the isolation portion and the filter layer on one side of the cover plate includes:

[0029] A first filter material layer is arranged on one side of the cover plate, and the first filter material layer is patterned to form a first filter unit and a first isolation layer;

[0030] A second filter material layer is arranged on the side of the cover plate and the first isolation layer away from the cover plate, and the second filter material layer is patterned to form a second filter unit, a third filter unit and a second isolation layer;

[0031] A shading material layer is arranged on the side wall of the second isolation layer facing the second filter unit and / or the third filter unit and on the side of the second isolation layer facing away from the cover plate, and the shading material layer is patterned to form a shading portion. The first filter unit is located at the first opening, the second filter unit is located at the second opening, and the third filter unit is located at the third opening.

[0032] According to an embodiment of the present application, a first filter material layer is provided on one side of the cover plate, and the step of patterning the first filter material layer to form a first filter unit and a first isolation layer further includes: forming a gap between the first filter unit and the first isolation layer;

[0033] The step of arranging a second filter material layer on the side of the cover plate and the first isolation layer facing away from the cover plate also includes: the second filter material layer fills the gap to form a second isolation layer, the second isolation layer includes a first sub-portion located on the side of the first isolation layer facing away from the cover plate and a second sub-portion located in the gap.

[0034] According to an embodiment of the present application, a shading material layer is arranged on the side wall of the second isolation layer facing the second filter unit and / or the third filter unit and on the side of the second isolation layer away from the cover plate, and before the step of patterning the shading material layer to form a shading portion, it includes: forming a light conversion layer, the light conversion layer includes a light conversion unit located on the side of the filter unit away from the cover plate.

[0035] According to an embodiment of the present application, a shading material layer is arranged on the side wall of the second isolation layer facing the second filter unit and / or the third filter unit and on the side of the second isolation layer away from the cover plate, and after the step of patterning the shading material layer to form a shading portion, the step includes: forming a light conversion layer, the light conversion layer includes a light conversion unit located on the side of the filter unit away from the cover plate, and the light conversion unit is located in the opening.

[0036] In a third aspect, the present application proposes a display device, comprising the display panel of any one of the first aspects, or a display panel prepared by the manufacturing method of the display panel of any one of the second aspects.

[0037] In an embodiment of the present application, the isolation part encloses to form an opening, and the isolation part isolates the first filter unit and the second filter unit from each other to prevent light crosstalk. The first filter unit and the second filter unit are used to transmit light in a certain wavelength range and block light in other wavelength ranges, thereby achieving a filtering effect. The isolation part includes a first isolation layer, a second isolation layer and a shading part stacked in a direction away from the cover plate. The material of the first isolation layer is the same as that of the first filter unit, and the material of the second isolation layer is the same as that of the second filter unit. The stacking of the first isolation layer and the second isolation layer has a filtering effect on light, thereby having a light isolation effect. Part of the shading part covers the side wall of the second isolation layer facing at least one opening, further enhancing the light isolation effect of the isolation part. The second isolation layer and the shading part are made of different materials. The stacking of the first isolation layer and the second isolation layer can replace a part of the shading part, thereby reducing the height of the shading part along the thickness direction of the display panel, thereby improving the yield rate and reducing the material of the shading part. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0039] Figure 1is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0040] Figure 2 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0041] Figure 3 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0042] Figure 4 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0043] Figure 5 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0044] Figure 6 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0045] Figure 7 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0046] Figure 8 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

[0047] Fig. 9 is a flow chart of another method for manufacturing a display panel provided in an embodiment of the present application;

[0048] Fig.10 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0049] Fig.11 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0050] Fig.12 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present application.

[0051] Explanation of the reference numerals: 100, cover plate; 200, isolation part; 210, opening; 211, first opening; 212, second opening; 213, third opening; 220, first isolation layer; 230, second isolation layer; 231, first sub-part; 232, second sub-part; 240, shading part; 250, first filter part; 300, filter layer; 301, filter unit; 310, first filter unit; 320, second filter unit; 330, third filter unit; 400, light conversion layer; 410, red light conversion unit; 420, green light conversion unit; 430, blue light transmission unit; 500, light-emitting substrate; X, thickness direction. DETAILED DESCRIPTION

[0052] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0053] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] like Figure 1 As shown, a display panel provided by an embodiment of the first aspect of the present application includes: a cover plate 100, an isolation portion 200 and a filter layer 300, the isolation portion 200 is arranged on one side of the cover plate 100, and the isolation portion 200 encloses a plurality of openings 210; the filter layer 300 includes a filter unit 301 in the opening 210; wherein the isolation portion 200 includes a first isolation layer 220, a second isolation layer 230 and a shading portion 240, the first isolation layer 220 and the second isolation layer 230 are stacked in a direction away from the cover plate 100, at least part of the shading portion 240 is arranged on the side of the second isolation layer 230 away from the cover plate 100, part of the shading portion 240 covers the side wall of the second isolation layer 230 facing at least one opening 210, and the second isolation layer 230 and the shading portion 240 are made of different materials.

[0056] In this embodiment, the isolation part 200 encloses the opening 210, and the filter unit 301 is located in each opening 210. The isolation part 200 isolates the filter units 301 from each other to improve the light crosstalk problem. The isolation part 200 includes a first isolation layer 220, a second isolation layer 230 and a shading part 240 arranged in sequence in a direction away from the cover plate 100. The first isolation layer 220 and the second isolation layer 230 are stacked and have a filtering effect on light, so that they can have a light isolation effect. At least part of the shading part 240 is arranged on the side of the second isolation layer 230 away from the cover plate 100, and part of the shading part 240 covers the side wall of the second isolation layer 230 facing at least one opening 210, further improving the light isolation effect of the isolation part 200. In the related art, the higher the height of the shading part, the higher the process difficulty, and it is difficult to ensure a better yield. In the embodiment of the present application, the materials of the second isolation layer 230 and the light-shielding portion 240 are different. The first isolation layer 220 and the second isolation layer 230 are stacked to replace a portion of the light-shielding portion 240, thereby reducing the height of the light-shielding portion 240 along the thickness direction X of the display panel, thereby improving the yield and reducing the material of the light-shielding portion 240.

[0057] like Figure 2 As shown, in some optional embodiments, the opening 210 includes a first opening 211 and a second opening 212, the filter unit 301 includes a first filter unit 310 arranged at the first opening 211 and a second filter unit 320 arranged at the second opening 212, the material of the first isolation layer 220 is the same as the material of the first filter unit 310, and the material of the second isolation layer 230 is the same as the material of the second filter unit 320; the partial shading portion 240 covers the side wall of the second isolation layer 230 facing the second opening 212.

[0058] In these optional embodiments, the isolation part 200 isolates the first filter unit 310 and the second filter unit 320 from each other to improve the light crosstalk problem. The first filter unit 310 and the second filter unit 320 are used to transmit light within a certain wavelength range and block light in other wavelength ranges, thereby achieving a filtering effect. The material of the first isolation layer 220 is the same as that of the first filter unit 310, and the material of the second isolation layer 230 is the same as that of the second filter unit 320. The first isolation layer 220 and the second isolation layer 230 are stacked to have a filtering effect on light, thereby having a light isolation effect. When forming the filter layer 300, the first isolation layer 220 and the second isolation layer 230 can be formed simultaneously, thereby simplifying the manufacturing process. The light in the second opening 212 can pass through the second filter unit 320, and the material of the second isolation layer 230 is the same as that of the second filter unit 320. The shading portion 240 covers the side wall of the second isolation layer 230 facing the second opening 212, thereby blocking the light in the second opening 212 from transmitting through the second isolation layer 230, thereby improving the process performance of the display panel.

[0059] Optional, such as Figure 2 As shown, the wavelength ranges of light that can be filtered by the first filter unit 310 and the second filter unit 320 are different or at least partially different. Optionally, the first filter unit 310 and the second filter unit 320 are made of different materials, so that the wavelength ranges of light that can be filtered by the first filter unit 310 and the second filter unit 320 are at least partially different, so that the first filter unit 310 and the second filter unit 320 can transmit light of different colors.

[0060] like Figure 2 As shown, the material of the first isolation layer 220 is the same as the material of the first filter unit 310, so that the first isolation layer 220 can filter the light with the same wavelength range as that of the first filter unit 310, and the material of the second isolation layer 230 is the same as the material of the second filter unit 320, so that the second isolation layer 230 can filter the light with the same wavelength range as that of the second filter unit 320, and the first isolation layer 220 and the second isolation layer 230 are stacked, so as to simultaneously filter the light within the wavelength range filtered by the first filter unit 310 and the second filter unit 320.

[0061] Optional, such as Figure 2 As shown, part of the light shielding portion 240 covers the side wall of the second isolation layer 230 away from the first opening 211 , thereby reducing the light passing through the second isolation layer 230 to enter the first opening 211 and affecting the light exiting the first opening 211 .

[0062] like Figure 3As shown, in some optional embodiments, the opening 210 further includes a third opening 213, the filter unit 301 further includes a third filter unit 330 located at the third opening 213, and the second filter unit 320 and the third filter unit 330 are made of the same material. In these optional embodiments, the opening 210 includes the first opening 211, the second opening 212 and the third opening 213, the third filter unit 330 is disposed at the third opening 213, and the second filter unit 320 and the third filter unit 330 are made of the same material, so that the second filter unit 320 and the third filter unit 330 can be formed simultaneously, thereby simplifying the manufacturing process.

[0063] like Figure 3 As shown, in some optional embodiments, the first isolation layer 220 is adjacent to the third filter unit 330 .

[0064] In these optional embodiments, the first isolation layer 220 is made of the same material as the first filter unit 310, so that after the light is filtered through the third filter unit 330 from the third opening 213, since the first isolation layer 220 is adjacent to the third filter unit 330, the first isolation layer 220 can filter the light emitted through the third filter unit 330, thereby reducing the crosstalk between large-angle light and other light.

[0065] like Figure 3 As shown, in some optional embodiments, the first isolation layer 220 is adjacent to the second filter unit 320 .

[0066] In these optional embodiments, the first isolation layer 220 is made of the same material as the first filter unit 310, so that after the light is filtered through the second filter unit 320 from the second opening 212, since the first isolation layer 220 is adjacent to the second filter unit 320, the first isolation layer 220 can filter the light emitted through the second filter unit 320, thereby reducing the crosstalk between large-angle light and other light.

[0067] like Figure 3 As shown, in some optional embodiments, the light shielding portion 240 covers the side wall of the second isolation layer 230 facing the third opening 213 .

[0068] In these optional embodiments, at least part of the light passing through the third opening 213 can pass through the third filter unit 330, and the second isolation layer 230 is made of the same material as the second filter unit 320 and the third filter unit 330, and the shading portion 240 covers the side wall of the second isolation layer 230 facing the third opening 213, thereby reducing the light in the third opening 213 passing through the second isolation layer 230.

[0069] like Figure 3As shown, in some optional embodiments, the first filter unit 310 is a blue filter unit, which is configured to transmit blue light, and the second filter unit 320 and the third filter unit 330 are yellow filter units, which are configured to transmit red light and green light.

[0070] In these optional embodiments, the second filter unit 320 and the third filter unit 330 are yellow filter units, which can transmit red light and green light. The second filter unit 320 and the third filter unit 330 are set to the same material to reduce the types of materials, and the second filter unit 320 and the third filter unit 330 can be formed simultaneously, reducing one mask process, thereby simplifying the process and improving the molding efficiency of the display panel.

[0071] The yellow filter unit can transmit red light and green light in a specific wavelength range, and filter light in a wavelength range other than the red light and green light in the specific wavelength range. The blue filter unit can transmit blue light in a specific wavelength range, and filter light in a wavelength range other than the blue light in the specific wavelength range, thereby screening red light, green light and blue light to improve color purity. The material of the first isolation layer 220 is the same as that of the blue filter unit, and the material of the second isolation layer 230 is the same as that of the yellow filter unit. The stacking arrangement of the first isolation layer 220 and the second isolation layer 230 can filter most of the visible light, thereby isolating the openings 210 from each other and improving the problem of light crosstalk in the openings 210. The side of the cover plate 100 away from the isolation part 200 is the light-emitting side of the display panel, and the first isolation layer 220 and the second isolation layer 230 are stacked in a direction away from the cover plate 100, that is, when observed from the light-emitting side, the first isolation layer 220 covers at least part of the side of the second isolation layer 230 facing the light-emitting side, reducing the exposed area of ​​the second isolation layer 230 made of the material of the yellow filter unit, and when external light is incident on the display panel, it can reduce the reflected light formed by the external light incident on the second isolation layer 230, thereby improving the dark display effect of the display panel. Optionally, the yellow filter unit can be obtained by patterning the yellow photoresist, and the blue filter unit can be obtained by patterning the blue photoresist, and the yellow photoresist and the blue photoresist are mainly composed of pigment resin and photoresist.

[0072] like Figure 4 As shown, in some optional embodiments, the display panel further includes a light conversion layer 400 , and the light conversion layer 400 includes light conversion units located on a side of each filter unit away from the cover plate 100 .

[0073] In these optional embodiments, the light conversion layer 400 includes a plurality of light conversion units, each of which is disposed on a side of the filter unit away from the cover plate 100, and the light is converted into light of a specific wavelength range by the light conversion unit and then emitted through the filter unit. The wavelength range of the light that can be converted by the light conversion unit to the filter unit is at least partially the same as the wavelength range of the light that can pass through the filter unit.

[0074] Optionally, a light conversion material is filled in each opening 210 to form a light conversion unit, wherein the material of the light conversion unit is arranged on the side of the first filter unit 310, the second filter unit 320 and the third filter unit 330 away from the cover plate 100 to form a light conversion unit. Each light conversion unit is located in each opening 210, and each opening 210 is surrounded by an isolation part 200, and the isolation part 200 improves the problem of crosstalk between the light converted by each light conversion unit.

[0075] like Figure 4 As shown, in some optional embodiments, the light conversion unit includes a red light conversion unit 410, a green light conversion unit 420 and a blue light transmission unit 430, the blue light transmission unit 430 is arranged on the side of the first filter unit 310 away from the cover plate 100, the red light conversion unit 410 is arranged on the side of one of the second filter unit 320 or the third filter unit 330 away from the cover plate 100, and the green light conversion unit 420 is arranged on the side of the other of the second filter unit 320 or the third filter unit 330 away from the cover plate 100.

[0076] In these optional embodiments, the red light conversion unit 410 emits red light under the stimulation of light, the green light conversion unit 420 emits green light under the stimulation of light, and the blue light transmission unit 430 is used to transmit blue light, so that the display panel can emit red light, green light and blue light.

[0077] The first filter unit 310 is a blue filter unit, which filters the blue light projected by the blue light transmission unit 430 to improve the color purity of the blue light. The second filter unit 320 and the third filter unit 330 are yellow filter units, which filter the red light converted by the red light conversion unit 410 and the green light converted by the green light conversion unit 420 to improve the color purity of the red light and the green light.

[0078] like Figure 5As shown, in some optional embodiments, a light-emitting substrate 500 is provided on the side of the light conversion unit away from the cover plate 100, and the light-emitting substrate 500 is used to emit blue light, the red light conversion unit 410 is configured to emit red light under the excitation of blue light, the green light conversion unit 420 is configured to emit green light under the excitation of blue light, and the blue light transmission unit 430 is used to transmit blue light. The light emitted by the light-emitting substrate 500 is directed toward the cover plate 100, so that the side of the cover plate 100 away from the light-emitting substrate 500 is the light-emitting side of the display panel.

[0079] Optionally, the material of the light conversion unit includes quantum dot material.

[0080] like Figure 6 As shown, in some optional embodiments, the light shielding portion 240 covers the sidewalls of the first isolation layer 220 and the second isolation layer 230 facing the second opening 212 .

[0081] In these optional embodiments, the shading portion 240 includes an opaque material, and the shading portion 240 extends to the side of the first isolation layer 220 and the second isolation layer 230 toward the second opening 212, thereby reducing the light of the second opening 212 passing through the first isolation layer 220 and the second isolation layer 230, thereby enhancing the shading effect of the isolation portion 200 and improving the display effect of the display panel.

[0082] Optionally, the first isolation layer 220 is formed simultaneously when the first filter unit 310 is formed, and the third filter unit 330 and the second isolation layer 230 are formed simultaneously when the second filter unit 320 is formed.

[0083] like Figure 2 As shown, in some optional embodiments, a first filter unit 250 is disposed on the side of the isolation unit 200 facing the first opening 211 , and the material of the first filter unit 250 is the same as that of the second filter unit 320 .

[0084] In these optional embodiments, since the blue light transmission unit 430 is provided in the first opening 211 to transmit blue light, and the material of the second filter unit 320 is capable of filtering blue light, a first filter unit 250 is provided on the side of the isolation portion 200 facing the first opening 211, and the material of the first filter unit 250 is the same as that of the second filter unit 320, that is, the first filter unit 250 is capable of filtering blue light, so that the first filter unit 250 can replace part of the material of the light shielding unit 240, thereby reducing the use of the material of the light shielding unit 240. In addition, since the material of the first filter unit 250 is the same as that of the second filter unit 320, the first filter unit 250 can be formed simultaneously when the second filter unit 320 is formed.

[0085] Optionally, the first filter portion 250 is disposed on the side of the second isolation layer 230 facing the first opening 211. The material of the second isolation layer 230 is the same as that of the second filter unit 320, that is, the second isolation layer 230 is the same as that of the first filter portion 250, and the first filter portion 250 can be formed simultaneously when the second isolation layer 230 is formed, and the first filter portion 250 can be formed by extending the second isolation layer 230 toward the first opening 211.

[0086] like Figure 7 As shown, in some optional embodiments, there is a gap between the first isolation layer 220 and the first filter unit 310, and the second isolation layer 230 includes a first sub-portion 231 and a second sub-portion 232, the first sub-portion 231 is located on the side of the first isolation layer 220 away from the cover plate 100, and the second sub-portion 232 is located in the gap.

[0087] In these optional embodiments, the first isolation layer 220 in the isolation part 200 is located on the side closest to the cover plate 100, and the first filter unit 310 and the first isolation layer 220 are arranged in the same layer. There is a gap between the first isolation layer 220 and the first filter unit 310, and the second sub-part 232 is arranged in the gap. The second sub-part 232 isolates the first filter unit 310 and the first isolation layer 220 from each other, and the emission range of the first filter unit 310 will not be increased due to the connection with the first isolation layer 220. It can be understood that the emission range of the light emitted by the second opening 212 and the third opening 213 through the second filter unit 320 and the third filter unit 330 is limited by the first isolation layer 220 arranged on both sides, and the light emission range of the first opening 211 through the first filter unit 310 is limited by the second filter part 260 so that the emission range of the first opening 211 is the same as the emission range of the second opening 212 and the third opening 213, thereby improving the display uniformity of the display panel.

[0088] Optionally, the material of the first sub-section 231 and the second sub-section 232 is the same; during the manufacturing process of the display panel, the second filter unit 320 material is set in an entire layer on one side of the cover plate 100, and the second filter unit 320 material is patterned to form the first sub-section 231 and the second sub-section 232 at one time, thereby simplifying the manufacturing process.

[0089] Optionally, the first sub-section 231 and the second sub-section 232 are connected. When forming the second filter unit 320, the first sub-section 231 is formed simultaneously and the gap is filled to form the second sub-section 232.

[0090] Optionally, the second sub-portion 232 is disposed around the first filter unit 310 , thereby improving the filtering effect of the second sub-portion 232 on large-angle light.

[0091] The second aspect of the present application also provides a method for manufacturing a display panel. Figure 1 and Figure 8 As shown, including:

[0092] Step S01: providing a cover plate 100 .

[0093] Step S02: An isolation portion 200 and a filter layer 300 are formed on one side of the cover plate 100, the isolation portion 200 encloses a plurality of openings 210, the filter layer 300 includes a filter unit 301 located in the opening 210, the isolation portion 200 includes a first isolation layer 220, a second isolation layer 230 and a shading portion 240, the first isolation layer 220 and the second isolation layer 230 are stacked in a direction away from the cover plate 100, at least part of the shading portion 240 is arranged on the side of the second isolation layer 230 away from the cover plate 100, part of the shading portion 240 covers the side wall of the second isolation layer 230 facing at least one opening 210, and the second isolation layer 230 and the shading portion 240 are made of different materials.

[0094] In this embodiment, the isolation part 200 encloses the opening 210, and the filter unit 301 is located in each opening 210. The isolation part 200 isolates the filter units 301 from each other to improve the light crosstalk problem. The isolation part 200 includes a first isolation layer 220, a second isolation layer 230 and a shading part 240 arranged in sequence in a direction away from the cover plate 100. The first isolation layer 220 and the second isolation layer 230 are stacked and have a filtering effect on light, so that they can have a light isolation effect. At least part of the shading part 240 is arranged on the side of the second isolation layer 230 away from the cover plate 100, and part of the shading part 240 covers the side wall of the second isolation layer 230 facing at least one opening 210, further improving the light isolation effect of the isolation part 200. In the related art, the higher the height of the shading part, the higher the process difficulty, and it is difficult to ensure a better yield. In the embodiment of the present application, the materials of the second isolation layer 230 and the light shielding portion 240 are different. The first isolation layer 220 and the second isolation layer 230 are stacked to replace a portion of the light shielding portion 240, thereby reducing the height of the light shielding portion 240 along the thickness direction X of the display panel, thereby improving the yield.

[0095] Optionally, the isolation portion 200 and the filter unit 301 may be formed by using a yellow light process.

[0096] In some optional embodiments, such as Fig. 9 As shown, the opening 210 includes a first opening 211, a second opening 212 and a third opening 213, the filter unit 301 includes a first filter unit 310, a second filter unit 320 and a third filter unit 330, and step S02 further includes the following steps:

[0097] Step S021: Fig.10As shown, a first filter material layer is disposed on one side of the cover plate 100 , and the first filter material layer is patterned to form a first filter unit 310 and a first isolation layer 220 .

[0098] Step S022: Fig.11 As shown, a second filter material layer is disposed on the side of the cover plate 100 and the first isolation layer 220 away from the cover plate 100 , and the second filter material layer is patterned to form a second filter unit 320 , a third filter unit 330 and a second isolation layer 230 .

[0099] Step S023: Figure 4 As shown, a light shielding material layer is provided on the side wall of the second isolation layer 230 facing the second filter unit 320 and / or the third filter unit 330 and on the side of the second isolation layer 230 facing away from the cover plate 100, and the light shielding material layer is patterned to form a light shielding portion 240.

[0100] In these optional embodiments, a first filter material layer is provided on one side of the cover plate 100, and the first filter material layer is patterned to form a first filter unit 310 and a first isolation layer 220. The first isolation layer 220 is made of the same material as the first filter unit 310, and the first isolation layer 220 and the first filter unit 310 can be obtained by one patterning process at the same time. A second filter material layer is provided on the side of the cover plate 100 and the first isolation layer 220 away from the cover plate 100, and the second filter material layer is patterned to form a second filter unit 320, a third filter unit 330, and a second isolation layer 230. The second isolation layer 230 is made of the same material as the second filter unit 320 and the third filter unit 330, and the second isolation layer 230 and the second filter unit 320 and the third filter unit 330 can be obtained by one patterning process at the same time. A light shielding material layer is arranged on the side wall of the second isolation layer 230 facing the second filter unit 320 and / or the third filter unit 330 and the side facing away from the cover plate 100, and the light shielding material layer is patterned to form a light shielding portion 240. The first isolation layer 220, the second isolation layer 230 and the light shielding portion 240 are stacked to form the isolation portion 200. The stacking of the first isolation layer 220 and the second isolation layer 230 can have the filtering range of the first filter material layer and the second filter material layer, so as to achieve the effect of blocking light in a certain wavelength range. The stacking of the first isolation layer 220 and the second isolation layer 230 can replace a part of the light shielding portion 240, so as to reduce the height of the light shielding portion 240 along the thickness direction X of the display panel, thereby improving the yield. The light shielding portion 240 extends to the side of the second isolation layer 230 facing the second opening 212 and / or the third opening 213, so as to block the light in the second opening 212 and / or the third opening 213 from being projected through the second isolation layer 230, thereby improving the process performance of the display panel.

[0101] In some optional embodiments, such as Figure 7 As shown, in step S021, it also includes:

[0102] A gap is formed between the first filter unit 310 and the first isolation layer 220 .

[0103] In step S022, the second filter material layer further fills the gap to form a second isolation layer 230, and the second isolation layer 230 includes a first sub-portion 231 located on the side of the first isolation layer 220 away from the cover plate 100 and a second sub-portion 232 located in the gap.

[0104] In these optional embodiments, the gap is formed when the first filter unit 310 and the first isolation layer 220 are patterned, or after the first filter unit 310 and the first isolation layer 220 are formed, the gap is formed between the first filter unit 310 and the first isolation layer 220 by etching or the like. When the second filter material layer is provided, the second filter material layer fills the gap to form the second sub-portion 232.

[0105] In the related art, the display panel includes a red filter unit and a green filter unit. In some embodiments of the present application, a yellow filter unit is used instead of the red filter unit and the green filter unit to save a filter material, and the red filter unit and the green filter unit need to be formed through two mask processes. In this embodiment, the second filter unit 320 and the third filter unit 330 can be formed by patterning the second filter material layer once, and the second filter material layer is set on the side of the cover plate 100 and the first isolation layer 220 away from the cover plate 100. The second filter material layer is patterned to form the second filter unit 320, the third filter unit 330 and the second isolation layer 230.

[0106] In some optional embodiments, such as Fig.12 As shown, before step S023 , the process includes: forming a light conversion layer 400 , wherein the light conversion layer 400 includes a light conversion unit located on a side of the filter unit 301 away from the cover plate 100 .

[0107] In some other optional embodiments, Figure 7 As shown, after step S023 , the process includes: forming a light conversion layer 400 , wherein the light conversion layer 400 includes a light conversion unit located on a side of the filter unit 301 away from the cover plate 100 , and the light conversion unit is located in the opening 210 .

[0108] Optionally, the manufacturing method further comprises: Figure 5 As shown, the cover plate 100 with the isolation portion 200 , the filter layer 300 and the light conversion layer is attached to the light emitting side of the light emitting substrate 500 .

[0109] Optionally, the light conversion layer 400 can be formed by a yellow light process.

[0110] The embodiment of the third aspect of the present application also provides a display device, including the display panel of any of the above-mentioned second aspect embodiments, or a display panel prepared by the manufacturing method of the display panel of any of the above-mentioned second aspect embodiments. Since the display device provided by the embodiment of the third aspect of the present application includes the display panel of any of the above-mentioned first and second aspects, the display device provided by the embodiment of the third aspect of the present application has the beneficial effects of the display panel of any of the above-mentioned first and second aspects, which will not be repeated here.

[0111] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0112] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: Cover plate; An isolation portion is arranged on one side of the cover plate, and the isolation portion surrounds and forms a plurality of openings; A filter layer, comprising a filter unit located in the opening; Wherein, the isolation part includes a first isolation layer, a second isolation layer and a light shielding part; The first isolation layer and the second isolation layer are stacked in a direction away from the cover plate, and at least part of the light shielding portion is arranged on a side of the second isolation layer away from the cover plate; Part of the light shielding portion covers a side wall of the second isolation layer facing at least one of the openings; The second isolation layer and the light shielding portion are made of different materials.

2. The display panel according to claim 1, characterized in that: The opening includes a first opening and a second opening; the filter unit includes a first filter unit located in the first opening and a second filter unit located in the second opening; The material of the first isolation layer is the same as that of the first filter unit, and the material of the second isolation layer is the same as that of the second filter unit; Part of the light shielding portion covers a side wall of the second isolation layer facing the second opening.

3. The display panel according to claim 2, characterized in that: Part of the light shielding portion covers a side wall of the second isolation layer that is away from the first opening.

4. The display panel according to claim 2, characterized in that: The opening further includes a third opening, the filter unit further includes a third filter unit located at the third opening, and the second filter unit and the third filter unit are made of the same material; Preferably, the first isolation layer is adjacent to the third filter unit; Preferably, the first isolation layer is adjacent to the second filter unit; Preferably, the light shielding portion covers a side wall of the second isolation layer facing the third opening.

5. The display panel according to claim 4, characterized in that: The first filter unit is a blue filter unit configured to transmit blue light, and the second filter unit and the third filter unit are yellow filter units configured to transmit red light and green light.

6. The display panel according to claim 5, characterized in that: The display panel further comprises a light conversion layer, wherein the light conversion layer comprises a light conversion unit located on a side of each filter unit away from the cover plate; Preferably, each of the light conversion units is located in each of the openings; Preferably, the light conversion unit comprises a red light conversion unit, a green light conversion unit and a blue light transmission unit, the blue light transmission unit is arranged on a side of the first light filtering unit away from the cover plate, the red light conversion unit is arranged on a side of the second light filtering unit or the third light filtering unit away from the cover plate, and the green light conversion unit is arranged on a side of the other of the second light filtering unit or the third light filtering unit away from the cover plate; Preferably, a light-emitting substrate is provided on a side of the light conversion unit away from the cover plate, the light-emitting substrate is used to emit blue light, the red light conversion unit is configured to emit red light under the excitation of the blue light, the green light conversion unit is configured to emit green light under the excitation of the blue light, and the blue light transmission unit is used to transmit the blue light; Preferably, the material of the light conversion unit includes quantum dot material.

7. The display panel according to claim 2, characterized in that: The light shielding portion covers side walls of the first isolation layer and the second isolation layer facing the second opening.

8. The display panel according to claim 2, characterized in that: The first filter unit is provided on the side of the isolation unit facing the first opening, and the material of the first filter unit is the same as that of the second filter unit; Preferably, the first filter portion is disposed on a side of the second isolation layer facing the first opening.

9. The display panel according to claim 2, characterized in that: There is a gap between the first isolation layer and the first filter unit, the second isolation layer includes a first sub-portion and a second sub-portion, the first sub-portion is located at a side of the first isolation layer away from the cover plate, and the second sub-portion is located in the gap; Preferably, the first sub-section is connected to the second sub-section; Preferably, the gap and the second sub-portion in the gap are arranged around the first filter unit.

10. A method for manufacturing a display panel, characterized in that: include: Provide cover plate; An isolation portion and a filter layer are formed on one side of the cover plate, the isolation portion encloses a plurality of openings, the filter layer includes a filter unit located in the opening, the isolation portion includes a first isolation layer, a second isolation layer and a shading portion, the first isolation layer and the second isolation layer are stacked in a direction away from the cover plate, at least part of the shading portion is arranged on a side of the second isolation layer away from the cover plate; part of the shading portion covers a side wall of the second isolation layer facing at least one of the openings, and the second isolation layer and the shading portion are made of different materials.

11. The manufacturing method according to claim 10, characterized in that: The filter unit includes a first filter unit, a second filter unit and a third filter unit, the opening includes a first opening, a second opening and a third opening, and the step of forming the isolation portion and the filter layer on one side of the cover plate includes: A first filter material layer is disposed on one side of the cover plate, and the first filter material layer is patterned to form the first filter unit and the first isolation layer; Disposing a second filter material layer on the side of the cover plate and the first isolation layer away from the cover plate, and patterning the second filter material layer to form the second filter unit, the third filter unit and the second isolation layer; A light shielding material layer is provided on the side wall of the second isolation layer facing the second light filter unit and / or the third light filter unit and on the side of the second isolation layer facing away from the cover plate, and the light shielding material layer is patterned to form the light shielding portion, the first light filter unit is located at the first opening, the second light filter unit is located at the second opening, and the third light filter unit is located at the third opening; Preferably, the step of providing a first filter material layer on one side of the cover plate and patterning the first filter material layer to form the first filter unit and the first isolation layer further includes: forming a gap between the first filter unit and the first isolation layer; The step of arranging a second filter material layer on the side of the cover plate and the first isolation layer facing away from the cover plate further includes: The second filter material layer fills the gap to form the second isolation layer, and the second isolation layer includes a first sub-portion located at a side of the first isolation layer away from the cover plate and a second sub-portion located in the gap.

12. The manufacturing method according to claim 11, characterized in that: A light shielding material layer is provided on the side wall of the second isolation layer facing the second filter unit and / or the third filter unit and on the side of the second isolation layer facing away from the cover plate, and before the step of patterning the light shielding material layer to form the light shielding portion, the step includes: A light conversion layer is formed, wherein the light conversion layer includes a light conversion unit located on a side of the filter unit away from the cover plate.

13. The manufacturing method according to claim 11, characterized in that: After a step of arranging a light shielding material layer on a side wall of the second isolation layer facing the second filter unit and / or the third filter unit and on a side of the second isolation layer facing away from the cover plate, and patterning the light shielding material layer to form the light shielding portion, the method comprises: A light conversion layer is formed, wherein the light conversion layer comprises a light conversion unit located on a side of the filter unit away from the cover plate, and the light conversion unit is located in the opening.

14. A display device, characterized in that: A display panel comprising any one of claims 1 to 9, or a display panel manufactured by the method for manufacturing a display panel according to any one of claims 10 to 13.

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