Display device and method for manufacturing the same

Abstract

A display device and a method for manufacturing the same. The display device includes a display panel and a thin film encapsulation structure located on the display panel. The thin film encapsulation structure includes: a first water barrier material layer located on the display panel; a color film layer located on the first water barrier material layer; and a second water barrier material layer located on the color film layer. The display device can achieve good display effects without using a polarizer.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display device and a method for manufacturing the same. Background Art

[0002] OLED (Organic Light Emitting Diode) display devices have a series of advantages such as self-luminescence, high contrast, high definition, wide viewing angle, low power consumption, fast response speed, and low manufacturing cost, and have become one of the key development directions of the new generation of display devices, and thus have received increasing attention.

[0003] Generally, the full-colorization of OLED display devices is usually achieved by arranging red, green, and blue pixels side by side or by combining a white organic light emitting diode with a color filter layer. For the former method, a polarizer is usually required to be combined with the display panel to achieve a good display effect. For the latter method, when white light is emitted from the bottom, the color filter layer is often located on the array substrate, and its aperture ratio is small; when white light is emitted from the top, the color filter layer is usually prepared on another encapsulation cover plate, and the distance from the light-emitting layer is too far, so color mixing may occur during display. Summary of the Invention

[0004] At least one embodiment of the present disclosure provides a display device, including: a display panel; a thin film encapsulation structure located on the display panel; wherein, the thin film encapsulation structure includes: a first water barrier material layer located on the display panel; a color film layer located on the first water barrier material layer; and a second water barrier material layer located on the color film layer.

[0005] For example, in a display device provided by at least one embodiment of the present disclosure, the materials of the first water barrier material layer and the second water barrier material layer are inorganic materials.

[0006] For example, in a display device provided by at least one embodiment of the present disclosure, the inorganic materials include silicon nitride, silicon oxide, silicon oxynitride, titanium oxide, zirconium oxide, tantalum oxide, barium titanate, neodymium oxide, aluminum oxynitride, zirconium oxynitride, tantalum oxynitride, yttrium oxynitride or neodymium oxynitride.

[0007] For example, in a display device provided by at least one embodiment of the present disclosure, the thickness of the first water barrier material layer is 100nm - 1000nm.

[0008] For example, in a display device provided by at least one embodiment of the present disclosure, the second water barrier material layer is 200nm - 300nm thicker than the first water barrier material layer.

[0009] For example, in a display device provided by at least one embodiment of the present disclosure, the thickness of the color filter layer is 1 μm - 3 μm.

[0010] For example, in a display device provided by at least one embodiment of the present disclosure, the color filter layer includes color filter layers of multiple colors arranged in the same layer, and there is a gap between the color filter layers of different colors; wherein, the gap includes a stack of color filter layers of at least two colors, or the pixel defining layer of the display panel corresponding to the gap is opaque.

[0011] For example, in a display device provided by at least one embodiment of the present disclosure, the gap includes a stack of color filter layers of two colors, and the two colors are the colors of the two color filter layers adjacent to the gap.

[0012] For example, in a display device provided by at least one embodiment of the present disclosure, the display panel is an OLED display panel, and the light-emitting layer of the OLED display panel is a white light-emitting layer or includes multiple color light-emitting layers.

[0013] For example, in a display device provided by at least one embodiment of the present disclosure, the thin film encapsulation structure further includes a planarization layer located between the color filter layer and the first water barrier material layer and / or the second water barrier material layer.

[0014] At least one embodiment of the present disclosure provides a method for manufacturing a display device, including: providing a display panel; forming a thin film encapsulation structure on the display panel, including: forming a first water barrier material layer on the display panel; forming a color filter layer on the first water barrier material layer; and forming a second water barrier material layer on the color filter layer.

[0015] For example, a method for manufacturing a display device provided by at least one embodiment of the present disclosure further includes: forming a planarization layer between the color filter layer and the first water barrier material layer and / or the second water barrier material layer.

[0016] For example, in a method for manufacturing a display device provided by at least one embodiment of the present disclosure, the color filter layer is formed by an inkjet printing method.

[0017] For example, in a method for manufacturing a display device provided by at least one embodiment of the present disclosure, forming the color filter layer includes forming color filter layers of multiple colors with gaps; wherein, a stack of color filter layers of at least two colors is formed at the gap, or the gap is formed at a position corresponding to the opaque pixel defining layer of the display panel.

[0018] For example, in a method for manufacturing a display device provided by at least one embodiment of the present disclosure, the color filter layer includes a red color filter layer, a green color filter layer, and a blue color filter layer, and a stack of color filter layers of two colors is formed at the interval, the two colors being the colors of the two color filter layers adjacent to the interval, and the stack of color filter layers formed at the interval and the two color filter layers adjacent to the interval are formed simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present disclosure and do not limit the present disclosure.

[0020] Figure 1 Schematic diagram of a display device provided by an embodiment of the present disclosure Figure 1 ;

[0021] Figure 2 Schematic diagram of a display device provided by an embodiment of the present disclosure Figure 2 ;

[0022] Figure 3 Schematic diagram of a display device provided by an embodiment of the present disclosure Figure 3 ;

[0023] Figure 4 Schematic diagram of a display device provided by an embodiment of the present disclosure Figure 4 ;

[0024] Figure 5 Schematic diagram of a display device provided by an embodiment of the present disclosure Figure 5 ;

[0025] Figure 6 Schematic diagram of a display device provided by an embodiment of the present disclosure Figure 6 ;

[0026] Figure 7 Flow chart for manufacturing a display device provided by an embodiment of the present disclosure;

[0027] Figure 8 Flow chart for manufacturing a thin film encapsulation structure in a display device provided by an embodiment of the present disclosure;

[0028] Figures 9A - 9B 、 Figures 9C1 - 9C4 、 Figures 9D1 - 9D4 Cross-sectional views of a display device during manufacturing provided by an embodiment of the present disclosure.

[0029] Reference numerals:

[0030] 10 - Display panel; 101 - Substrate; 106 - Pixel defining layer; 107 - Anode layer; 108 - Light emitting layer; 1081 - Red light emitting layer; 1082 - Green light emitting layer; 1083 - Blue light emitting layer; 109 - Cathode layer; 20 - Thin film encapsulation structure; 202 - First water - blocking material layer; 203 - Color filter layer; 2031 - Red color filter layer; 2032 - Green color filter layer; 2033 - Blue color filter layer; 204 - Second water - blocking material layer; 205 - Planarization layer. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some but not all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "first", "second", and the like used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] In order to achieve full - color of the OLED display panel, the arrangement of red, green, and blue pixels used in the display panel usually needs to be combined with a polarizer to achieve a good display effect; or, the method of using white organic light - emitting diodes combined with color filter layers in the display panel may cause problems such as a small pixel aperture ratio or color mixing in the display panel.

[0034] At least one embodiment of the present disclosure provides a display device, including: a display panel; a thin - film encapsulation structure located on the display panel; wherein, the thin - film encapsulation structure includes: a first water - blocking material layer located on the display panel; a color filter layer located on the first water - blocking material layer; and a second water - blocking material layer located on the color filter layer.

[0035] A method for manufacturing a display device provided by at least one embodiment of the present disclosure includes: providing a display panel; forming a thin film encapsulation structure on the display panel, including: forming a first water blocking material layer on the display panel; forming a color filter layer on the first water blocking material layer; and forming a second water blocking material layer on the color filter layer.

[0036] The thin film encapsulation structure provided by at least one embodiment of the present disclosure has better light filtering effect, which can reduce the reflection phenomenon on the surface of the display panel. Therefore, good display effect can be presented even when the polarizer is not attached to the display panel; moreover, not attaching the polarizer is also beneficial to the thin design of the display device.

[0037] The display device and its manufacturing method of the present disclosure will be described below through several specific embodiments.

[0038] Embodiment 1

[0039] This embodiment provides a display device, as Figure 1 shown, the display device includes a display panel 10 and a thin film encapsulation structure 20 located on the display panel 10; the thin film encapsulation structure 20 includes: a first water blocking material layer 202 located on the display panel 10, a color filter layer 203 located on the first water blocking material layer 202, and a second water blocking material layer 204 located on the color filter layer 203.

[0040] In another example of this embodiment, as Figure 2 shown, the thin film encapsulation structure 20 may further include a planarization layer 205 located between the color filter layer 203 and the first water blocking material layer 202 and / or the second water blocking material layer 204. The planarization layer 205 can planarize the uneven areas generated during the preparation of the color filter layer 203.

[0041] In this embodiment, the materials of the first water blocking material layer 202 and the second water blocking material layer 204 may be inorganic materials or organic materials. Inorganic materials are used in this embodiment, and the inorganic materials may include, for example, silicon nitride, silicon oxide, silicon oxynitride, titanium oxide, zirconium oxide, tantalum oxide, barium titanate, neodymium oxide, aluminum oxynitride, zirconium oxynitride, tantalum oxynitride, yttrium oxynitride or neodymium oxynitride and other suitable materials. These materials used in the first water blocking material layer 202 and the second water blocking material layer 204 have excellent water blocking characteristics, which can effectively prevent the moisture introduced during the preparation of each functional layer and the moisture in the air from penetrating into the display panel 10. In this embodiment, the planarization layer 205 may be made of a transparent organic material, such as polyimide (PI), epoxy resin and other suitable materials, and this embodiment does not limit this.

[0042] In this embodiment, the thickness of the first water-blocking material layer 202 can be, for example, 100 nm - 1000 nm, such as 500 nm - 600 nm. The second water-blocking material layer 204 can be, for example, thicker than the first water-blocking material layer 202, such as 200 nm - 300 nm thicker, and its thickness can be, for example, 300 nm - 1200 nm, such as 700 nm - 800 nm. Therefore, the second water-blocking material layer 204 can better achieve the function of blocking external moisture. In this embodiment, the thickness of the color film layer 203 can be, for example, 1 μm - 3 μm, and this thickness can vary, for example, according to the different materials of the color film layer 203. The thickness of the planarization layer 205 can vary according to the actual situation such as the unevenness of the color film layer 203, and this embodiment does not limit it.

[0043] In this embodiment, as Figure 3 and Figure 4 shown, the color film layer 203 can include, for example, color film layers of multiple colors arranged in the same layer (three are shown in the figure), and there is a gap 2051 between the color film layers of different colors. In this embodiment, as Figure 3 shown, at the gap 2051 between the color film layers of different colors, there can include, for example, a stack of color film layers of at least two colors; or as Figure 4 shown, the pixel defining layer 106 of the display panel corresponding to the gap 2051 between the color film layers of different colors is opaque. In this embodiment, adopting the above structure at the gap 2051 between the color film layers of different colors can prevent the display panel 10 from leaking light at the gap 2051 of the color film layer 203, thereby improving the display effect of the display panel 10.

[0044] In this embodiment, the color film layer 203 can include, for example, a red color film layer, a green color film layer, and a blue color film layer, which can be prepared by a colored resin material, such as a colored resin material with photosensitive characteristics. Thus, after the white light emitted by the display panel 10 passes through the thin film encapsulation structure 20, it can emit red, green, and blue lights.

[0045] In this embodiment, as Figure 3 shown, at the gap 2051 of the color film layer 203, there can include, for example, a stack of color film layers of two colors, and these two colors are the colors of the two color film layers adjacent to the gap 2051. For example, the gap between the red color film layer and the green color film layer can include a stack of the red color film layer and the green color film layer; the gap between the red color film layer and the blue color film layer can include a stack of the red color film layer and the blue color film layer; and the gap between the green color film layer and the blue color film layer can include a stack of the green color film layer and the blue color film layer. Therefore, the color film layers of multiple colors included in the color film layer 203 of the thin film encapsulation structure 20 and the color film layers at the adjacent gaps can be formed simultaneously, thereby reducing the preparation difficulty of the thin film encapsulation structure 20 and saving the preparation cost.

[0046] For another example, as Figure 5 shown, at the interval 2051 of the color film layer 203, a stack of color film layers of three colors may also be included. For example, when the color film layer 203 includes a red color film layer, a green color film layer, and a blue color film layer, at the interval 2051 of the color film layer 203, a stack of a red color film layer, a green color film layer, and a blue color film layer is included. Therefore, the thin film encapsulation structure 20 may have a better light leakage prevention effect, so that the display panel 10 can achieve better display quality.

[0047] In this embodiment, the thin film encapsulation structure may further include, for example, a transparent ultraviolet curable layer on the second water barrier material layer 204, and the transparent ultraviolet curable layer can protect the thin film encapsulation structure and the display panel. In this embodiment, the material of the transparent ultraviolet curable layer may be, for example, a transparent resin material, etc., and this embodiment does not limit this.

[0048] In this embodiment, the display panel 10 may be, for example, an OLED display panel. As Figure 1 shown, the OLED display panel may include, for example, functional structures such as a pixel defining layer 106, an anode layer 107, a light emitting layer 108, and a cathode layer 109. For example, in other examples, a hole injection layer, a hole transport layer, etc. may also be included between the anode layer and the light emitting layer as needed, and an electron injection layer, an electron transport layer, etc. may also be included between the cathode layer and the light emitting layer. For example, a driving circuit structure may be further formed on the substrate 101 to actively drive the OLED, and the driving circuit structure may include gate lines, data lines, power lines, driving transistors, switching transistors, storage capacitors, etc., and the embodiments of the present disclosure do not limit this.

[0049] The light emitting layer 108 of the OLED display panel may be, for example, a white light emitting layer; or as Figure 6 shown, the light emitting layer may include a plurality of color light emitting layers, for example, a red light emitting layer 1081, a green light emitting layer 1082, and a blue light emitting layer 1083. When the light emitting layer 108 is a white light emitting layer, the white light emitted by the display panel 10 can emit light of the same color as the color film layer 203 after passing through the color film layer 203 of the thin film encapsulation structure 20. For example, when the color film layer 203 includes a red color film layer, a green color film layer, and a blue color film layer, the display panel 10 can emit red, green, and blue three colors of light. The display panel 10 may be used, for example, in VR (Virtual Reality) / AR (Augmented Reality) display devices. In this embodiment, as Figure 6As shown, when the light-emitting layer includes multiple color light-emitting layers, for example, a red light-emitting layer 1081, a green light-emitting layer 1082, and a blue light-emitting layer 1083, the light-emitting layers of various colors in the display panel 10 correspond to the colors of the color filter layers in the thin-film encapsulation structure 20. That is, the red light-emitting layer 1081 corresponds to the red color filter layer 2031, the green light-emitting layer 1082 corresponds to the green color filter layer 2032, and the blue light-emitting layer 1083 corresponds to the blue color filter layer 2033. Therefore, after the red, green, and blue lights emitted by the display panel 10 pass through the color filter layer 203 of the thin-film encapsulation structure 20, the color of the emitted light is purer, thereby improving the display quality of the display panel 10.

[0050] The display device provided in this embodiment includes a thin-film encapsulation structure. The intervals between the color filter layers of various colors in the color filter layer of the thin-film encapsulation structure are small, and in some examples, there are also color filter layer laminates of different colors or light leakage prevention designs corresponding to opaque pixel defining layers at the intervals between the color filter layers of various colors. Therefore, the thin-film encapsulation structure provided in this embodiment has a better light filtering effect, can reduce the reflection phenomenon on the surface of the display panel of the display device, and can also exhibit a good display effect without attaching a polarizer to the display panel; in addition, not attaching a polarizer to the display panel is also beneficial to the thin design of the display device.

[0051] Embodiment 2

[0052] This embodiment provides a method for manufacturing a display device, as Figure 7 shown, this method includes steps S101-S202.

[0053] Step S101: Provide a display panel.

[0054] In this embodiment, as Figure 9A shown, the display panel can be, for example, an OLED display panel. The display panel can include, for example, a pixel defining layer 106, an anode layer 107, a light-emitting layer 108, a cathode layer 109, etc. structures, which are formed by sequentially forming a pixel defining layer 106, an anode layer 107, a light-emitting layer 108, a cathode layer 109, etc. on a substrate 101; functional structures such as gate lines, data lines, power lines, driving transistors, switching transistors, storage capacitors, etc. (not shown in the figure) can also be formed on the substrate 101, and this embodiment does not limit this. In this embodiment, the light-emitting layer 108 can be, for example, a white light-emitting layer or include multiple color light-emitting layers; the light-emitting layer 108 can be prepared, for example, by vacuum evaporating a light-emitting material using a fine metal mask plate, or can also be prepared by inkjet printing and other methods. This embodiment does not limit the specific formation method of each functional layer.

[0055] Step S202: Form a thin-film encapsulation structure on the display panel.

[0056] In this embodiment, the thin film encapsulation structure may include, for example, a first water blocking material layer, a color film layer, and a second water blocking material layer. In an example of this embodiment, as Figure 8 shown, forming the thin film encapsulation structure may include steps S2021 - S2023.

[0057] Step S2021: Form a first water blocking material layer on the display panel.

[0058] In this embodiment, as Figure 9B shown, first, a first water blocking material layer 202 is formed on the display panel. The first water blocking material layer 202 may be, for example, an inorganic material or an organic material. In this embodiment, an inorganic material is used. The inorganic material may include, for example, silicon nitride, silicon oxide, silicon oxynitride, titanium oxide, zirconium oxide, tantalum oxide, barium titanate, neodymium oxide, aluminum oxynitride, zirconium oxynitride, tantalum oxynitride, yttrium oxynitride, or neodymium oxynitride and other suitable materials. These materials have excellent water blocking characteristics and can effectively prevent moisture introduced during the subsequent formation of other functional layers from infiltrating into the display panel. In this embodiment, for example, methods such as chemical vapor deposition, physical vapor deposition, and coating can be used to form the first water blocking material layer 202. The formed thickness of the first water blocking material layer 202 may be, for example, 100 nm - 1000 nm, such as 500 nm - 600 nm.

[0059] Step S2022: Form a color film layer on the first water blocking material layer.

[0060] In this embodiment, as Figure 9C1 shown, after the first water blocking material layer 202 is formed, a color film layer 203 is formed on the first water blocking material layer 202. In this embodiment, the color film layer 203 may be formed using a color resin and a photolithography method, or may be formed using an organic pigment and methods such as inkjet printing. This inkjet printing process may be carried out in cooperation with a high-precision alignment system and in an inert gas (such as nitrogen) environment. This environment can prevent moisture from being introduced during the inkjet printing of the color film layer. This inkjet printing method also has advantages such as accurate inkjet, adjustable inkjet position and inkjet quality. For example, when the color film layer 203 includes color film layers of multiple colors, using the inkjet printing method to form each color film layer can effectively control the interval size between the color film layers, making the interval between the color film layers of each inkjet-printed color smaller, thereby enhancing the light filtering effect of the color film layer. In this embodiment, the formed thickness of the color film layer 203 may be, for example, 1 μm - 3 μm, such as 1.5 μm or 2 μm, etc. This thickness may be selected according to the different materials for forming the color film layer 203.

[0061] Step S2023: Form a second water blocking material layer on the color film layer.

[0062] In this embodiment, asFigure 9D1 As shown, after the color filter layer 203 is formed, a second water-blocking material layer 204 is formed on the color filter layer 203. In this embodiment, the second water-blocking material layer 204 can be, for example, an inorganic material or an organic material. In this embodiment, an inorganic material is used. The inorganic material can be, for example, a suitable material such as silicon nitride, silicon oxide, or silicon oxynitride. These materials have excellent water-blocking characteristics and can effectively prevent moisture in the external air from penetrating into the color filter layer 203 or even the display panel. In this embodiment, for example, methods such as chemical vapor deposition, physical vapor deposition, and coating can be used to form the second water-blocking material layer 204, and the formed second water-blocking material layer 204 can be, for example, 200 nm - 300 nm thicker than the first water-blocking material layer 202. In this embodiment, the formed thickness of the second water-blocking material layer 204 can be, for example, 300 nm - 1200 nm, such as 700 nm - 800 nm. Therefore, the second water-blocking material layer 204 can better achieve the function of blocking external moisture.

[0063] In another example of this embodiment, after the second water-blocking material layer 204 is formed, for example, a transparent ultraviolet curing layer can also be formed on the second water-blocking material layer 204 to protect the thin film encapsulation structure and the display panel. In this embodiment, the transparent ultraviolet curing layer can be, for example, a transparent resin material, etc., and this embodiment does not limit this.

[0064] In one example of this embodiment, the manufacturing method of the display device can also include, for example, a step of forming a planarization layer 205 between the color filter layer 203 and the first water-blocking material layer 202 and / or the second water-blocking material layer 204. For example, after step S2021, a step of forming a planarization layer 205 on the first water-blocking material layer 202 is added, and then the color filter layer 203 is formed on the planarization layer 205, so as to form a planarization layer 205 between the color filter layer 203 and the first water-blocking material layer 202; or after step S2022, a step of forming a planarization layer 205 on the color filter layer 203 is added, and then the second water-blocking material layer 204 is formed on the planarization layer 205, so as to form a planarization layer 205 between the color filter layer 203 and the second water-blocking material layer 204. In this embodiment, the planarization layer 205 can be, for example, a transparent organic material, such as a suitable material like polyimide (PI), epoxy resin, etc. Its formed thickness can be selected according to the actual situation such as the unevenness of the color filter layer 203, and this embodiment does not limit this.

[0065] In this embodiment, as Figure 9C2 shown, in step S2022, that is, when forming the color filter layer 203 on the first water-blocking material layer 202, the formed color filter layer can include forming a color filter layer of multiple colors with intervals 2051, and forming a stack of at least two-color color filter layers at the intervals 2051; or asFigure 9C3 As shown, the spacer 2051 of the color filter layer can be formed, for example, at a position corresponding to the opaque pixel defining layer 106 of the display panel. In this embodiment, adopting the above structure at the spacer 2051 of the color filter layer can prevent light leakage at the spacer 2051 of the color filter layer 203 of the display panel, thereby improving the display effect of the display panel.

[0066] In this embodiment, as Figure 9C2 shown, the color filter layer can include, for example, a red color filter layer 2031, a green color filter layer 2032, and a blue color filter layer 2033, and a stack of two color filter layers is formed at the spacer 2051 of each color color filter layer. These two colors can be, for example, the colors of the two color filter layers adjacent to the spacer 2051. For example, a stack of the red color filter layer and the green color filter layer can be formed at the spacer between the red color filter layer and the green color filter layer; a stack of the red color filter layer and the blue color filter layer can be formed at the spacer between the red color filter layer and the blue color filter layer; and a stack of the green color filter layer and the blue color filter layer can be formed at the spacer between the green color filter layer and the blue color filter layer. Therefore, the color filter layers of various colors included in the color filter layer of the thin film encapsulation structure and the color filter layers at the spacers adjacent thereto can be formed simultaneously, thereby reducing the manufacturing difficulty of the thin film encapsulation structure. In this embodiment, as Figure 9C4 shown, a stack of three color filter layers can also be formed, for example, at the spacer 2051 of each color color filter layer. For example, when the color filter layer includes a red color filter layer 2031, a green color filter layer 2032, and a blue color filter layer 2033, a stack of the red color filter layer, the green color filter layer, and the blue color filter layer can also be formed at the spacer 2051 of the color filter layer. Therefore, the thin film encapsulation structure can have a better light leakage prevention effect, thereby improving the display quality of the display panel.

[0067] In the example of this embodiment, when the color filter layer includes color filter layers of multiple colors with spacers, and a stack of at least two color filter layers is included at the spacers between different color color filter layers, after the above color filter layer is prepared, a planarization layer can be formed on the color filter layer, and then a second water blocking material layer can be formed on the planarization layer. For example, as Figure 9D2 shown, a stack of two color filter layers is formed at the spacer 2051 of different color color filter layers, and then a planarization layer 205 is formed on the above color filter layer. The formed thickness of the planarization layer 205 can be greater than the thickness of the stack of color filter layers formed at the spacer 2051, so that the upper surface of the planarization layer 205 is on the same plane, facilitating the subsequent formation of the second water blocking material layer 204 on the planarization layer 205. Again, for example, as Figure 9D4As shown, a stack of three-color color film layers is formed at the interval 2051 between color film layers of different colors, and then a planarization layer 205 is formed on the above-mentioned color film layers. The formation thickness of the planarization layer 205 can be adjusted according to the thickness of the color film layers and the stack of color film layers at the interval 2051, so that the upper surface of the planarization layer 205 is on the same plane, facilitating the subsequent formation of the second water-blocking material layer 204 on the planarization layer 205. In this embodiment, as Figure 9D3 shown, when the interval 2051 between the color film layers is formed at a position corresponding to the opaque pixel defining layer 106 of the display panel, if the flatness of the color film layers is within an acceptable range, for example, the second water-blocking material layer 204 can be directly formed on the color film layer 203. In this embodiment, whether to form the planarization layer 205 can be selected according to the actual situation such as the flatness of the color film layer 203.

[0068] In this embodiment, when the light-emitting layer 108 of the OLED display panel is formed as a white light-emitting layer, the white light emitted by the display panel can emit light of the same color as the color film layer after passing through the color film layer of the thin film encapsulation structure. For example, when the formed color film layer includes a red color film layer, a green color film layer, and a blue color film layer, the display panel can emit red, green, and blue lights. Such a display panel can be used in, for example, VR (Virtual Reality) / AR (Augmented Reality) display devices. When the light-emitting layer 108 of the OLED display panel includes multiple color light-emitting layers, such as light-emitting layers of red, green, and blue colors, the multiple color film layers included in the color film layer in the thin film encapsulation structure should be formed corresponding to the light-emitting layers of the corresponding colors in the display panel. Therefore, after the red, green, and blue lights emitted by the display panel pass through the corresponding color film layers of the thin film encapsulation structure, the color of the light is purer, thereby improving the display quality of the display panel.

[0069] The manufacturing method of the display device provided in this embodiment includes forming a thin film encapsulation structure on the display panel. The intervals between the color film layers of each color in the formed color film layer in the thin film encapsulation structure are small, and in some examples, there are also stacks of color film layers of different colors at the intervals between the color film layers of each color, or the intervals between the color film layers of each color correspond to the opaque pixel defining layer. Therefore, the thin film encapsulation structure provided in this embodiment has a better light filtering effect, can reduce the reflection phenomenon on the surface of the display panel of the display device, and thus can also show a good display effect when the display panel does not adhere to a polarizer; in addition, the fact that the display panel does not adhere to a polarizer is also beneficial to the thin design of the display device.

[0070] There are also the following points to note:

[0071] (1) The accompanying drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0072] (2) For clarity, in the accompanying drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions may be enlarged or reduced, that is, these drawings are not drawn to actual scale. It can be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there may be intermediate elements.

[0073] (3) Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0074] The above are only the specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present disclosure should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A display device, comprising: A display panel, comprising a substrate and a pixel defining layer disposed on the substrate, wherein the pixel defining layer comprises an opening; A thin film encapsulation structure disposed on the display panel; Wherein, the thin film encapsulation structure comprises: A first water blocking material layer disposed on the display panel; A color filter layer disposed on the first water blocking material layer; and A second water blocking material layer disposed on the color filter layer; Wherein, the color filter layer is disposed in the opening, the first water blocking material layer surrounds the side surface of the color filter layer and the surface of the color filter layer close to the substrate, and the second water blocking material layer covers the surface of the color filter layer away from the substrate; The color filter layer comprises color filter layers of multiple colors disposed in the same layer, and there are intervals between the color filter layers of different colors, and the intervals comprise a stack of color filter layers of three colors.

2. The display device according to claim 1, wherein, The materials of the first water blocking material layer and the second water blocking material layer are inorganic materials.

3. The display device according to claim 2, wherein, The inorganic materials comprise silicon nitride, silicon oxide, silicon oxynitride, titanium oxide, zirconium oxide, tantalum oxide, barium titanate, neodymium oxide, aluminum oxynitride, zirconium oxynitride, tantalum oxynitride, yttrium oxynitride or neodymium oxynitride.

4. The display device according to claim 1, wherein, The thickness of the first water blocking material layer is 100 nm - 1000 nm.

5. The display device according to claim 4, wherein, The second water blocking material layer is 200 nm - 300 nm thicker than the first water blocking material layer.

6. The display device according to claim 1, wherein The thickness of the color filter layer is 1 μm - 3 μm.

7. The display device according to claim 1, wherein, The display panel is an organic light emitting diode display panel, and the light emitting layer of the organic light emitting diode display panel is a white light emitting layer or comprises multiple color light emitting layers.

8. The display device according to any one of claims 1-7, wherein, The thin film encapsulation structure further comprises a planarization layer disposed between the color filter layer and the first water blocking material layer and / or the second water blocking material layer.

9. A method for manufacturing a display device, comprising: Providing a display panel, wherein the display panel comprises a substrate and a pixel defining layer disposed on the substrate, and the pixel defining layer comprises an opening; Forming a thin film encapsulation structure on the display panel, comprising: Forming a first water blocking material layer on the display panel; Forming a color filter layer on the first water blocking material layer; and Forming a second water blocking material layer on the color filter layer; Wherein, the color filter layer is formed in the opening, the first water blocking material layer surrounds the side surface of the color filter layer and the surface of the color filter layer close to the substrate, and the second water blocking material layer covers the surface of the color filter layer away from the substrate; Wherein, forming the color filter layer comprises forming color filter layers of multiple colors with intervals; wherein, a stack of color filter layers of three colors is formed at the intervals.

10. The method for manufacturing a display device according to claim 9, further comprising: Forming a planarization layer between the color filter layer and the first water blocking material layer and / or the second water blocking material layer.

11. The manufacturing method of the display device according to claim 9, wherein, Forming the color filter layer by an inkjet printing method.

12. The manufacturing method of the display device according to claim 9, wherein, The color filter layer comprises a red color filter layer, a green color filter layer and a blue color filter layer, and a stack of the red color filter layer, the green color filter layer and the blue color filter layer is formed at the intervals.

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