Display module, manufacturing method and display device

Abstract

The invention discloses a display module, a manufacturing method and a display device. The display module of one embodiment comprises a substrate, a first substrate arranged on the substrate, a color film layer arranged on the first substrate, and at least one material layer arranged on the side, away from the first substrate, of the color film layer, the material layer is used for blocking ultraviolet light below the light-emitting initial wave band of the first substrate and the color film layer stacked film layer. According to the embodiment of the invention, the material layer above the color film layer is designed, the ultraviolet light is blocked by using the material layer, and the light wave band of the ultraviolet light blocked by the material layer is limited, so that the display module disclosed by the embodiment of the invention can protect the transmittance of the luminescent material based on the setting, and the display effect is improved. Therefore, the defects of display frame brightness reduction, abnormal display and the like are improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a display module, a manufacturing method and a display device. Background Art

[0002] Ultraviolet (UV) light has a shorter wavelength and greater energy than visible light. Ultraviolet light can damage the organic materials in OLED displays, causing the intensity of photoelectric generation of the organic materials to decrease, the chemical bonds in the organic material molecules to break, and the decomposition of the organic materials will reduce the effective thickness of each film layer of the device. Therefore, how to improve the anti-UV function of the display module is an urgent problem to be solved. Summary of the invention

[0003] An object of the present invention is to provide a display module, a manufacturing method and a display device to solve at least one of the problems existing in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A first aspect of the present invention provides a display module, comprising a substrate, a first base plate arranged on the substrate, a color filter layer arranged on the first base plate, and at least one material layer arranged on a side of the color filter layer away from the first base plate, wherein the material layer is used to block ultraviolet light below the light emission starting band of the superimposed film layer of the first base plate and the color filter layer.

[0006] Optionally, the color filter layer includes:

[0007] A patterned filter layer located on a surface of the first substrate away from the substrate;

[0008] a light shielding layer located between adjacent filter layers; and

[0009] The flat layer is located on the side of the filter layer and the light shielding layer away from the substrate, and the surface of the flat layer away from the substrate is attached to the material layer.

[0010] Optionally, the planar layer is used to block ultraviolet light below the emission starting band of the superimposed film layer of the first substrate and the filter layer.

[0011] Optionally, the filter layer further includes a red sub-filter layer, a blue sub-filter layer and a green sub-filter layer.

[0012] The color filter layer also includes a first blocking layer arranged on the side of the green sub-filter layer away from the substrate, the orthographic projection of the first blocking layer on the substrate at least covers the orthographic projection of the green sub-filter layer on the side of the substrate, and the distance between the surface of the flat layer away from the substrate and the substrate is greater than the distance between the surface of the first blocking layer away from the substrate and the substrate.

[0013] Optionally, the orthographic projection of the first blocking layer on the substrate covers the orthographic projection of the green sub-filter layer on one side of the substrate, the orthographic projection of the red sub-filter layer on one side of the substrate, the orthographic projection of the blue sub-filter layer on one side of the substrate, and the orthographic projection of the shading layer between adjacent filter layers of different colors on the substrate.

[0014] Optionally, the first blocking layer is also arranged on the side of the red sub-filter layer and the blue sub-filter layer away from the substrate, the orthographic projection of the first blocking layer on the substrate covers the orthographic projection of the green sub-filter layer on the side of the substrate, the orthographic projection of the red sub-filter layer on the side of the substrate, and the orthographic projection of the blue sub-filter layer on the side of the substrate, and there is a gap between the first blocking layers located at corresponding positions of different color filter layers.

[0015] Optionally, the resource layer further includes a second blocking layer disposed on the color filter layer away from the first side, the second blocking layer is an inorganic material, and the material of the second blocking layer is different from the material of the filter layer.

[0016] Optionally, the light emitting starting wavelength is 435 nm, and the material layer is used to block ultraviolet light in the wavelength range of 0 to 420 nm.

[0017] Optionally, the resource layer includes a cover plate, and the material of the cover plate includes one or more of rigid glass, flexible glass and CPI.

[0018] Optionally, the material layer further includes an adhesive layer located between the cover plate and the color film layer, and the adhesive layer is used to block ultraviolet light in the 0-420 nm band.

[0019] A second aspect of the present invention provides a display device, comprising the display module described in the first aspect of the present invention.

[0020] A third aspect of the present invention provides a method for manufacturing a display module, the method comprising:

[0021] forming a first substrate on the substrate;

[0022] forming a color filter layer on a side of the first substrate away from the substrate;

[0023] At least one material layer is formed on the side of the color filter layer away from the first substrate, and the material layer is used to block ultraviolet light below the emission starting band of the superimposed film layer of the first substrate and the color filter layer.

[0024] The beneficial effects of the present invention are as follows:

[0025] The embodiment of the present invention designs the material layer above the color filter layer, uses the material layer to block ultraviolet light, and limits the light band of ultraviolet light blocked by the material layer. Based on the above settings, the display module of the embodiment of the present invention can protect the transmittance of the luminescent material, thereby improving defects such as reduced display brightness and display abnormalities. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Figure 1 A schematic diagram showing a defect of a display module of a related embodiment when irradiated with ultraviolet light;

[0028] Figure 2 A schematic diagram showing the structure of a display module according to an embodiment of the present invention;

[0029] Figure 3 A schematic diagram showing the ultraviolet light blocking band of the material layer according to an embodiment of the present invention;

[0030] Figure 4 A schematic diagram showing the structure of a material layer of a display module according to an embodiment of the present invention;

[0031] Figure 5 Show Figure 4 A schematic diagram comparing the display effects of the display module shown and the display module of the related art;

[0032] Figure 6 A schematic diagram showing the structure of a color filter layer according to an embodiment of the present invention;

[0033] Figure 7 to Figure 9 Schematic diagrams showing the structures of the first barrier layer according to different embodiments of the present invention;

[0034] Fig.10 A schematic diagram showing the structure of the second barrier layer according to an embodiment of the present invention;

[0035] Fig.11 A schematic structural diagram of a second substrate according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0036] In order to explain the present invention more clearly, the present invention is further described below in conjunction with embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and the protection scope of the present invention should not be limited thereto.

[0037] In the related art, in order to improve the anti-ultraviolet performance of display products, conventional display products use polarizers to protect light-emitting devices. In the experiment to test the protective performance of polarizers, the polarizer is used to cover half of the area of ​​the OLED (organic light-emitting diode) panel, and the other half is left uncovered. The OLED panel is then placed in an ultraviolet (UV) irradiation cavity, and the brightness of the two areas of the OLED display screen is measured after UV irradiation. The display brightness of the area not blocked by the polarizer decays by about 5%, and the brightness of the area protected by the polarizer decays by about 0.76%. Therefore, the polarizer can improve the anti-ultraviolet ability of the display product, thereby improving the display effect of the display product.

[0038] Related technologies also include using a color film layer to replace the polarizer structure design to achieve non-polarization technology, such as COE (Color On Encapsulation) products. This technology eliminates the original polarizer by making a color film on the OLED package, and uses the color film layer to protect the light-emitting device from damage by UV radiation.

[0039] Based on the COE product design, the display module needs to be tested for sunlight exposure at the client end to confirm whether the terminal product has any functional defects. Conventional tests are divided into UV light tests and xenon lamp tests. After testing, it was found that the display brightness of the UV irradiated area of ​​the COE product was lower than that of the UV non-irradiated area, display anomalies occurred, and the product reliability could not meet customer needs. The reason for this anomaly is that after the above UV irradiation, the material interface of the COE structure of the display product reacts chemically with the UV light, which reduces the transmittance of the luminescent material of the COE product, resulting in defects such as reduced display brightness and display anomalies. In view of this, the embodiments of the present invention propose a display module, a manufacturing method, and a display device to solve the above problems.

[0040] The first embodiment of the present invention provides a display module, such as Figure 2 As shown, the display module includes a substrate 14, a first base plate 11 arranged on the substrate 14, a color filter layer 12 arranged on the first base plate 11, and at least one material layer 13 arranged on the side of the color filter layer 12 away from the first base plate 11, wherein the material layer 13 is used to block ultraviolet light below the light emission starting band of the superimposed film layer of the first base plate 11 and the color filter layer 12.

[0041] In the embodiment of the present invention, the material layer 13 above the color filter layer 12 is designed to block the ultraviolet light. In order to prevent the material layer 13 from affecting the light-emitting effect of the light-emitting device while blocking the ultraviolet light, the embodiment of the present invention limits the wavelength band of the ultraviolet light blocked by the material layer 13. In an optional embodiment, the effective light-emitting starting wavelength band of the superimposed film layer after the light-emitting device layer of the first substrate is superimposed with the color filter layer 12 is 435nm. Figure 3 As shown, the material layer 13 is used to block ultraviolet light in the 0-420nm band. The embodiment of the present invention designs the ultraviolet blocking band of the material layer 13 so that the transmittance of ultraviolet light in the blocking band is 0%. On the basis of achieving ultraviolet blocking, the blocking band is smaller than the effective luminous band to further ensure that the material layer 13 disposed above the color filter layer 12 does not affect the luminous effect of the first substrate below. Based on the above arrangement, the display module of the embodiment of the present invention can protect the transmittance of the luminescent material, thereby improving the display screen brightness reduction, display abnormality and other defects.

[0042] It is worth noting that the embodiments of the present invention do not limit how to achieve the blocking band of the resource layer 13 to be 0 to 420 nm. Relevant technologies, such as the selection and proportioning of materials for the resource layer 13, are used by those skilled in the art to achieve the resource layer 13 for blocking ultraviolet light in the band of 0 to 420 nm as a design criterion, which will not be repeated here.

[0043] In an optional embodiment, the resource layer 13 includes a cover plate 132 , and the material of the cover plate 132 includes one or more of a resin (PET) material, rigid glass, or flexible glass.

[0044] In an optional embodiment, if Figure 4 As shown, the material layer 13 further includes an adhesive layer 131 located between the cover plate 132 and the color filter layer 12 , and the adhesive layer 131 is used to block ultraviolet light in the 0-420 nm band.

[0045] The adhesive layer 131 of the embodiment of the present invention is used to fix the cover plate 132 and the color filter layer 12. In addition, the embodiment of the present invention designs the ultraviolet light blocking band of the adhesive layer 131 to block ultraviolet light in the band of 0 to 420 nm, thereby improving the display performance of the display module.

[0046] In an optional embodiment, the adhesive layer 131 includes multiple adhesive layers, at least one of which is used to block ultraviolet light in the 0-420nm band. The adhesive layer 131 of the embodiment of the present invention is a composite film layer, that is, at least one adhesive layer of the adhesive layer 131 is set to have an anti-ultraviolet light band, and multiple adhesive layers can be selected at the same time to achieve the purpose of reducing ultraviolet transmittance.

[0047] Based on the configuration of the above embodiment of the present invention, Figure 5 In the table shown, compared with the structure with a polarizer (POL) and compared with the display module using the color filter layer 12 as a control group, the embodiment of the present invention sets the cover plate 132 to have an anti-UV function, and the brightness attenuation of white light, red light, green light and blue light is reduced, and the chromaticity change is also reduced. Similarly, the embodiment of the present invention sets the adhesive layer 131 to have an anti-UV material structure, for example Figure 5 The adhesive layer (1) and the adhesive layer (2) shown have improved display effects.

[0048] In an optional embodiment, if Figure 6 As shown, the color filter layer 12 includes:

[0049] A patterned filter layer 121 located on a surface of the first substrate 11 away from the base 14;

[0050] a light shielding layer 122 located between adjacent filter layers 121; and

[0051] The planar layer 123 is located on a side of the filter layer 121 and the light shielding layer 122 away from the substrate 14 , and a surface of the planar layer 123 away from the substrate 14 is attached to the material layer 13 .

[0052] The color filter layer 12 of the embodiment of the present invention is a COE structure, that is, the color filter layer 12 is directly arranged on the outermost film layer structure of the first substrate, such as the encapsulation layer of the first substrate. This embodiment is different from the structure in which the material layer 13 with an ultraviolet blocking band is arranged above the color filter layer 12. This embodiment designs the original structure of the color filter layer 12, and the flat layer 123 is arranged on the uppermost film layer of the color filter layer 12 away from the substrate 14, and is laminated with the surface of the material layer 13 close to the substrate 14 to ensure the surface flatness of the product.

[0053] In an optional embodiment, the flat layer 123 is used to block ultraviolet light below the emission start band of the superimposed film layer of the first substrate 11 and the filter layer 121. Based on the above stacking structure, the transmittance spectrum of the flat layer 123 is adjusted in the embodiment of the present invention, so that the flat layer 123 has the ultraviolet light blocking function in the 0-420nm band, so as to achieve the purpose of 0% transmittance in this band, which not only ensures that the display module has a good display effect in the effective light-emitting band, but also ensures that the display module has a good anti-ultraviolet light function.

[0054] In an optional embodiment, if Figure 7As shown, the filter layer 121 further includes a red sub-filter layer 121R, a blue sub-filter layer 121B and a green sub-filter layer 121G, and the color filter layer 12 further includes a first blocking layer 124 arranged on the side of the green sub-filter layer 121G away from the substrate 14, the orthographic projection of the first blocking layer on the substrate 14 at least covers the orthographic projection of the green sub-filter layer 121G on the side of the substrate 14, and the distance between the surface of the flat layer 123 away from the substrate 14 and the substrate 14 is greater than the distance between the surface of the first blocking layer 124 away from the substrate 14 and the substrate 14.

[0055] In the embodiment of the present invention, since the first blocking layer 124 only covers the green sub-filter layer 121G, under this structure, the flat layer 123 simultaneously covers the surface of the first blocking layer 124 away from the substrate 14, and the surfaces of the red sub-filter layer 121R and the blue sub-filter layer 121B away from the substrate 14. Therefore, under this structure, the thickness of the flat layer 123 is greater than the thickness of the first blocking layer 124. For example, the thickness of the flat layer 123 is 3 microns, and the thickness of the first blocking layer 124 is 200 angstroms.

[0056] In the present embodiment, the first blocking layer 124 is an inorganic material, such as silicon nitride or silicon oxide. In the embodiment of the present invention, when the display module is subjected to an ultraviolet light test, when the related art does not provide a material structure with the ultraviolet light blocking function of the embodiment of the present invention, it is found through experimental tests that since the materials of the planar layer 123 and the filter layer 121 are both organic materials, the free radicals that stimulate the chemical reaction are generated by the planar layer 123, and among the red sub-filter layer 121R, the blue sub-filter layer 121B and the green sub-filter layer 121G, the brightness of the green sub-filter layer 121G decays faster. Therefore, in the embodiment of the present invention, a first blocking layer 124 is additionally provided between the green sub-filter layer 121G and the planar layer 123, and the first blocking layer 124 is used to ensure that the free radicals generated by the planar layer 123OC3 cannot react with the organic material of the green sub-filter layer 121G.

[0057] In the actual structure verification, after the UV light test, the transmittance of the original layer structure of ultraviolet light was 8%. Under the structural condition of forming the first blocking layer 124 on the green sub-filter layer 121G based on the embodiment of the present invention, the ultraviolet light transmittance was reduced to 3%, thereby improving the display performance.

[0058] In an optional embodiment, if Figure 8As shown, the orthographic projection of the first blocking layer 124 on the substrate 14 covers the orthographic projection of the green sub-filter layer 121G on one side of the substrate 14, the orthographic projection of the red sub-filter layer 121R on one side of the substrate 14, the orthographic projection of the blue sub-filter layer 121B on one side of the substrate 14, and the orthographic projection of the shading layer 122 between adjacent filter layers 121 of different colors on the substrate 14.

[0059] In the embodiment of the present invention, the first barrier layer 124 not only covers the green sub-filter layer 121G, but also covers the red sub-filter layer 121R and the blue sub-filter layer 121B and the shielding layer between the two filter layers. The first barrier layer 124 covers the entire layer, and the surface away from the substrate 14 is a flat surface, so that the flat layer 123 is leveled on the first barrier layer 124 to ensure surface flatness.

[0060] In an optional embodiment, if Fig. 9 As shown, the first blocking layer 124 is also arranged on the side of the red sub-filter layer 121R and the blue sub-filter layer 121B away from the substrate 14, the orthographic projection of the first blocking layer 124 on the substrate 14 covers the orthographic projection of the green sub-filter layer 121G on the side of the substrate 14, the orthographic projection of the red sub-filter layer 121R on the side of the substrate 14 and the orthographic projection of the blue sub-filter layer 121B on the side of the substrate 14, and there is a gap between the first blocking layers 124 located at corresponding positions of different color filter layers 121.

[0061] In the embodiment of the present invention, the first blocking layer 124 is patterned and covers the red sub-filter layer 121R, the green sub-filter layer 121G and the blue sub-filter layer 121B at the corresponding positions. The first blocking layer 124 is used to block the organic materials of the sub-filter layers of each color and the flat layer 123 located above it, so as to prevent the film layers in the stacking direction from forming a chemical reaction after being irradiated by ultraviolet light, which will affect the luminous performance of the sub-filter layers of each color. Figure 8 The first barrier layer 124 is designed as a whole layer, and the embodiment of the present invention Fig. 9 The first barrier layer 124 is patterned to reduce internal reflection of the film layer.

[0062] In an optional embodiment, if Fig.10As shown, the resource layer 13 also includes a second barrier layer 15 arranged on the side of the color filter layer 12 away from the substrate 14. The second barrier layer 15 is an inorganic material, such as silicon nitride or silicon oxide. The material of the second barrier layer 15 is different from the material of the filter layer 121. For example, the material of the sub-filter layer of each color is an organic material. The second barrier layer 15 is used to block ultraviolet light in the 0-420nm band to avoid chemical reactions between the flat layer 123 and the sub-filter layers 121 of each color covered by the flat layer 123, so as to ensure the stability of the luminescent material of the sub-filter layer 121 of each color, thereby improving the display effect of the display module.

[0063] In an optional embodiment, if Fig.11 As shown, the first substrate 11 is an organic light emitting diode array substrate or a liquid crystal display array substrate, and the display module further includes a second substrate 16 arranged on the side of the first substrate 11 away from the substrate 14, such as a touch substrate, and the color film layer 12 is arranged on the surface of the touch substrate away from the substrate 14, thereby realizing the touch display of the display module.

[0064] Another embodiment of the present invention provides a display device, which includes a display module according to any one of the above embodiments of the present invention. The display device can be any product or component with a display function, such as an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc., and this embodiment does not limit this.

[0065] Another embodiment of the present invention provides a method for manufacturing the display module of the above embodiment of the present invention, the method comprising:

[0066] forming a first substrate 11 on the substrate 14;

[0067] A color filter layer 12 is formed on a side of the first substrate 11 away from the substrate 14;

[0068] At least one material layer 13 is formed on the side of the color filter layer 12 away from the first substrate 11 , and the material layer 13 is used to block ultraviolet light below the emission starting band of the superimposed film layer of the first substrate 11 and the color filter layer 12 .

[0069] The manufacturing method of the embodiment of the present invention does not add complicated manufacturing processes, and the overall process steps are simple. The display module obtained by the manufacturing method of the embodiment of the present invention uses the material layer 13 to block ultraviolet light. The display module can protect the transmittance of the luminescent material, thereby improving the display screen brightness reduction, display abnormality and other defects.

[0070] In an optional embodiment, when the resource layer 13 includes a cover plate 132 , the manufacturing method further includes forming the cover plate 132 on a side of the color filter layer 12 away from the substrate 14 .

[0071] In an optional embodiment, if Figure 4 As shown, the material layer 13 also includes an adhesive layer 131 located between the cover plate 132 and the color filter layer 12, and the adhesive layer 131 is used to block ultraviolet light in the 0-420nm band. The manufacturing method also includes: forming the adhesive layer 131 on the side of the color filter layer 12 away from the substrate 14, and then forming the cover plate 132 on the side of the adhesive layer 131 away from the substrate 14. The embodiment of the present invention achieves ultraviolet light blocking in the 0-420nm band by designing the ultraviolet light blocking band of the adhesive layer 131, thereby improving the display performance of the display module.

[0072] In an optional embodiment, if Figure 6 As shown, forming the color filter layer 12 on the side of the first substrate 11 away from the substrate 14 further includes:

[0073] A patterned light shielding layer 122 is formed on a surface of the array substrate away from the substrate 14;

[0074] forming a filter layer 121 in the patterned area defined by the adjacent light shielding layer 122; and

[0075] A planar layer 123 is formed on a side of the filter layer 121 and the light shielding layer 122 away from the substrate 14 .

[0076] Based on the above process, the material layer 13 is formed on the surface of the flat layer 123 away from the substrate 14 to ensure the surface flatness of the product.

[0077] In the embodiment of the present invention, the flat layer 123 is used to block ultraviolet light below the emission start band of the superimposed film layer of the first substrate 11 and the filter layer 121. Based on the above stacking structure, the transmittance spectrum of the flat layer 123 is adjusted in the embodiment of the present invention, so that the flat layer 123 has the ultraviolet light blocking function in the 0-420nm band, so as to achieve the purpose of 0% transmittance in this band, which can ensure that the display module has a good display effect in the effective light emitting band and can also ensure that the display module has a good anti-ultraviolet light function.

[0078] In an optional embodiment, if Figure 7 to Figure 9The display module with the first barrier layer 124 shown in the figure, after forming the red sub-filter layer 121R, the blue sub-filter layer 121B and the green sub-filter layer 121G in the filter layer 121, forming the color filter layer 12 on the side of the first substrate 11 away from the substrate 14 further includes:

[0079] A first blocking layer 124 is formed on the side of each corresponding sub-filter layer away from the substrate 14. Figure 7 to Figure 9 As shown, the first barrier layer 124 has different configurations, which are designed based on actual applications and will not be described in detail here.

[0080] In an optional embodiment, if Fig.10 As shown, the material layer 13 also includes a second blocking layer 15 arranged on the side of the color filter layer 12 away from the substrate 14, and the manufacturing method also includes forming the second blocking layer 15 on the side of the color filter layer 12 away from the substrate 14, and using the second blocking layer 15 to block ultraviolet light in the 0-420nm band to avoid chemical reactions between the flat layer 123 and the sub-filter layers 121 of each color covered by the flat layer 123, so as to ensure the stability of the luminescent materials of the sub-filter layers 121 of each color, thereby improving the display effect of the display module.

[0081] It is worth noting that the specific embodiment of the method for manufacturing the display module of the embodiment of the present invention can refer to the display module of the aforementioned embodiment, which will not be described in detail here.

[0082] In the description of the present invention, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0083] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the embodiments here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A display module, characterized in that: It includes a substrate, a first base plate arranged on the substrate, a color filter layer arranged on the first base plate, and at least one material layer arranged on the side of the color filter layer away from the first base plate, wherein the material layer is used to block ultraviolet light below the light emission starting band of the superimposed film layer of the first base plate and the color filter layer.

2. The display module according to claim 1, characterized in that: The color film layer comprises: A patterned filter layer located on a surface of the first substrate away from the substrate; a light shielding layer located between adjacent filter layers; and The flat layer is located on the side of the filter layer and the light shielding layer away from the substrate, and the surface of the flat layer away from the substrate is attached to the material layer.

3. The display module according to claim 2, characterized in that: The flat layer is used to block ultraviolet light below the emission starting band of the first substrate and the filter layer stacked film layer.

4. The display module according to claim 2, characterized in that: The filter layer also includes a red sub-filter layer, a blue sub-filter layer and a green sub-filter layer. The color filter layer also includes a first blocking layer arranged on the side of the green sub-filter layer away from the substrate, the orthographic projection of the first blocking layer on the substrate at least covers the orthographic projection of the green sub-filter layer on the side of the substrate, and the distance between the surface of the flat layer away from the substrate and the substrate is greater than the distance between the surface of the first blocking layer away from the substrate and the substrate.

5. The display module according to claim 4, characterized in that: The orthographic projection of the first blocking layer on the substrate covers the orthographic projection of the green sub-filter layer on one side of the substrate, the orthographic projection of the red sub-filter layer on one side of the substrate, the orthographic projection of the blue sub-filter layer on one side of the substrate, and the orthographic projection of the shading layer between adjacent filter layers of different colors on the substrate.

6. The display module according to claim 4, characterized in that: The first blocking layer is also arranged on the side of the red sub-filter layer and the blue sub-filter layer away from the substrate, the orthographic projection of the first blocking layer on the substrate covers the orthographic projection of the green sub-filter layer on the substrate side, the orthographic projection of the red sub-filter layer on the substrate side and the orthographic projection of the blue sub-filter layer on the substrate side, and there is a gap between the first blocking layers located at corresponding positions of different color filter layers.

7. The display module according to claim 2, characterized in that: The resource layer further includes a second blocking layer disposed on the color filter layer away from the first side, the second blocking layer is an inorganic material, and the material of the second blocking layer is different from the material of the filter layer.

8. The display module according to claim 1, characterized in that: The light emission starting band is 435nm band, and the material layer is used to block ultraviolet light in the 0-420nm band.

9. The display module according to claim 2, characterized in that: The material layer includes a cover plate, and the cover plate includes one or more of rigid glass, flexible glass and resin glass.

10. The display module according to claim 2, characterized in that: The material layer also includes an adhesive layer located between the cover plate and the color film layer, and the adhesive layer is used to block ultraviolet light in the 0-420nm band.

11. A display device, characterized in that: The display device comprises the display module according to any one of claims 1 to 10.

12. A method for manufacturing the display module according to any one of claims 1 to 10, characterized in that: The method comprises: forming a first substrate on a substrate; forming a color filter layer on a side of the first substrate away from the substrate; At least one material layer is formed on the side of the color filter layer away from the first substrate, and the material layer is used to block ultraviolet light below the emission starting band of the superimposed film layer of the first substrate and the color filter layer.

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