Color film substrate, display module, display device and method for manufacturing the same

Abstract

The present application provides a color filter substrate, a display module, a display device and a manufacturing method thereof. The color filter substrate includes a light filtering layer, and the light filtering layer includes a plurality of first light filtering parts and second light filtering parts located between adjacent first light filtering parts. Among them, the light transmittance of the first light filtering part for light within a first preset wavelength range and the light transmittance of the second light filtering part for light within a second preset wavelength range are both greater than a preset value, and the first preset wavelength range and the second preset wavelength range do not overlap. In the color filter substrate in the embodiments of the present application, by providing the second light filtering part, the light incident amount of the display device is increased, thereby improving the photosensitive effect of the display device. At the same time, the embodiments of the present application also enable the second light filtering part to absorb the light within the first preset wavelength range, thereby reducing the reflection of the light within the first wavelength range in the external environment at the second light filtering part, reducing the influence of ambient light reflection on the display screen, and improving the display effect.

Description

Technical Field

[0001] The present application relates to the technical field of display equipment, and in particular to a color film substrate, a display module, a display device and a preparation method thereof. Background Art

[0002] With the rapid development of electronic devices, users have higher and higher requirements for screen-to-body ratio, making the full-screen display of electronic devices receive more and more attention in the industry.

[0003] On electronic devices such as mobile phones and tablets, it is necessary to integrate photosensitive components such as front cameras, infrared sensors, proximity sensors, etc. on one side of the display screen. When used, light needs to penetrate the display screen before it can be received by the photosensitive components. Therefore, in order to ensure the optical performance of the photosensitive components when used, it is necessary to ensure that at least part of the display screen has sufficient transmittance. Summary of the invention

[0004] The embodiments of the present application provide a color film substrate, a display module, a display device and a method for manufacturing the same, which can improve the photosensitivity effect.

[0005] In a first aspect, an embodiment of the present application provides a color filter substrate, the color filter substrate includes a filter layer, the filter layer includes a plurality of first filter parts and a second filter part located between adjacent first filter parts, wherein the transmittance of the first filter part to light within a first preset wavelength range and the transmittance of the second filter part to light within a second preset wavelength range are both greater than a preset value, and the first preset wavelength range does not overlap with the second preset wavelength range.

[0006] In a second aspect, an embodiment of the present application provides a display module, comprising a stacked substrate, a light-emitting device layer, and a color filter substrate of any of the aforementioned embodiments. The color filter substrate is located on the side of the light-emitting device layer away from the substrate, the light-emitting device layer comprises a plurality of light-emitting units, and the orthographic projection of the light-emitting unit on the substrate at least partially overlaps with the orthographic projection of the first filter portion on the substrate.

[0007] In a third aspect, an embodiment of the present application provides a display device having a display area and a photosensitive area, wherein the transmittance of the photosensitive area is greater than the transmittance of the display area, and the display device comprises a display module of any of the aforementioned embodiments located in the photosensitive area.

[0008] In a fourth aspect, an embodiment of the present application provides a method for manufacturing a display device, comprising:

[0009] forming a light emitting device layer on one side of the substrate, the light emitting device layer comprising a plurality of light emitting units;

[0010] A filter layer is formed on a side of the light-emitting device layer facing away from the substrate. The filter layer includes a plurality of first filter portions and second filter portions located between adjacent first filter portions. The orthographic projection of the first filter portion on the substrate overlaps at least partially with the orthographic projection of the light-emitting unit on the substrate.

[0011] Wherein, the light transmittance of the first filter portion for light within a first preset wavelength range and the light transmittance of the second filter portion for light within a second preset wavelength range are both greater than a preset value, and the first preset wavelength range and the second preset wavelength range do not overlap.

[0012] The embodiments of the present application provide a color filter substrate, a display module, a display device, and a manufacturing method thereof. By providing the second filter portion, the color filter substrate increases the light incident amount of the display device, thereby improving the photosensitive effect of the display device. At the same time, the embodiments of the present application also enable the second filter portion to absorb light within the first preset wavelength range, thereby reducing the reflection of light within the first preset wavelength range in the external environment at the second filter portion and reducing the influence of ambient light reflection on the display screen, improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0014] Figure 1 is a schematic structural diagram of a color filter substrate provided by an embodiment of the present application;

[0015] Figure 2 is Figure 1 the cross-sectional structural diagram of A-A in

[0016] Figure 3 is a schematic structural diagram of another color filter substrate provided by an embodiment of the present application;

[0017] Figure 4 is Figure 3 the cross-sectional structural diagram of B-B in

[0018] Figure 5 is a schematic cross-sectional structural diagram of a display module provided by an embodiment of the present application;

[0019] Figure 6 is a schematic cross-sectional structural diagram of another display module provided by an embodiment of the present application;

[0020] Figure 7 is a schematic structural diagram of a display device provided by an embodiment of the present application;

[0021] Figure 8It is a flowchart of a method for manufacturing a display device provided by an embodiment of the present application;

[0022] Figure 9a - Figure 9b It is a schematic diagram of the process of a method for manufacturing a display device provided by an embodiment of the present application;

[0023] Figure 10 It is a flowchart of still another method for manufacturing a display device provided by an embodiment of the present application;

[0024] Figure 11a - Figure 11b It is a schematic diagram of the process of still another method for manufacturing a display device provided by an embodiment of the present application.

[0025] Marking description:

[0026] 1. Filter layer; 11. First filter part; 12. Second filter part; 121. Filter body; 122. First opening; 13. Light-shielding part; 131. Second opening; 132. Third opening;

[0027] 2. Substrate;

[0028] 3. Protective layer;

[0029] 4. Substrate; 41. Third filter part; 42. Fourth opening;

[0030] 5. Light-emitting device layer; 51. Light-emitting unit;

[0031] AA. Display area; FA. Photosensitive area;

[0032] X. Thickness direction. Detailed implementation manners

[0033] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0035] The color filter (CF) substrate plays a crucial role in the display of color images. Existing color filter substrates include a light filtering layer, which includes a light filtering portion and a light shielding portion. The light shielding portion is usually a black matrix structure and defines a plurality of openings for accommodating the light filtering portion. The presence of the light shielding portion can play a role in blocking light, reducing the impact of ambient light reflection on the display effect. However, the light shielding portion also blocks the entry of external light, reducing the amount of light entering the display screen and resulting in a smaller amount of light information obtained by the photosensitive component.

[0036] To solve the above problems, please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a color filter substrate. The color filter substrate includes a light filtering layer 1, and the light filtering layer 1 includes a plurality of first light filtering portions 11 and second light filtering portions 12 located between adjacent first light filtering portions 11. Among them, the transmittance of the first light filtering portion 11 to light within a first preset wavelength range, and the transmittance of the second light filtering portion 12 to light within a second preset wavelength range are both greater than a preset value, and the first preset wavelength range and the second preset wavelength range do not overlap.

[0037] The color filter substrate is usually applied to a display device. The light filtering layer 1 can filter the light emitted by the light emitting unit 51 in the display device to present a preset picture. It should be noted that the color filter substrate provided by the embodiment of the present application can be applied to a liquid crystal display device, an organic light emitting display device, and other types of display devices, and the embodiment of the present application does not limit this.

[0038] The light filtering layer 1 includes a first light filtering portion 11 and a second light filtering portion 12. In Figure 1 , the first light filtering portion 11 is shown in dotted lines. The first light filtering portion 11 is correspondingly arranged with the light emitting unit in the display device, and plays a role in filtering the light emitted by the light emitting unit to present a corresponding display picture. Exemplarily, the plurality of first light filtering portions 11 respectively include a red filter, a blue filter, and a green filter.

[0039] The second light filtering part 12 is arranged between adjacent first light filtering parts 11. Part of the external light can enter the display device through the second light filtering part 12, thereby increasing the transmittance of the ambient light, increasing the light input amount of the display device and the light information amount obtained by the photosensitive component, and further enabling the display device to have a better photosensitive effect.

[0040] For light, light of different colors usually has different wavelength ranges. The statement in the embodiment of the present application that "the transmittance of the first light filtering part 11 to light within the first preset wavelength range is greater than the preset value" means that the light within the first preset wavelength range is more likely to pass through the first light filtering part 11 than other light, that is, the first light filtering part 11 can have a high transmittance to specific color light within the first preset wavelength range. It should be noted that the color film substrate usually includes a variety of color types of the first light filtering part 11, and different color types of the first light filtering part 11 can have a high transmittance to light of different colors. Therefore, the "light within the first preset wavelength range" can include a variety of different color lights. Exemplarily, the transmittance of the first light filtering part 11 to red light, green light, and blue light is greater than the preset value.

[0041] Similarly, the statement in the embodiment of the present application that "the transmittance of the second light filtering part 12 to light within the second preset wavelength range is greater than the preset value" means that the light within the second preset wavelength range is more likely to pass through the second light filtering part 12 than other light, that is, the second light filtering part 12 can have a high transmittance to specific color light within the second preset wavelength range. The specific value of the "preset value" is not limited in the embodiment of the present application.

[0042] In some alternative embodiments, the first light filtering part 11 and the second light filtering part 12 are prepared by adding special dyes into a glass sheet. By changing the type of dye, the transmittance of the first light filtering part 11 and the second light filtering part 12 to light of different colors can be adjusted, so that their transmittance to specific color light is greater than the preset value, that is, they have a high transmittance to specific color light and a high absorption rate to other color light.

[0043] While increasing the light input amount, the embodiment of the present application makes the first preset wavelength range not overlap with the second preset wavelength range, that is, the color types of the light with a high transmittance for the first light filtering part 11 and the light with a high transmittance for the second light filtering part 12 are different. This design can reduce light reflection and improve the display effect.

[0044] Specifically, since the first light filtering portion 11 has a relatively high transmittance for specific color light within the first preset wavelength range, during the display process, the light within the first preset wavelength range can pass through the first light filtering portion 11 and exit the display device, thereby presenting the corresponding display screen. And since the second light filtering portion 12 has a relatively small transmittance for the light within the first preset wavelength range, the second light filtering portion 12 can absorb the ambient light within the first preset wavelength range incident on the second light filtering portion 12, preventing it from being reflected to the human eye, thereby reducing the influence of the reflection of the ambient light within the first preset wavelength range on the display screen and improving the display effect.

[0045] The color filter substrate provided by the embodiment of the present application, by providing the second light filtering portion 12, increases the light incident amount of the display device, thereby improving the photosensitive effect of the display device. At the same time, the embodiment of the present application also enables the second light filtering portion 12 to absorb the light within the first preset wavelength range, thereby reducing the reflection of the light within the first preset wavelength range in the external environment at the second light filtering portion 12, reducing the influence of ambient light reflection on the display screen, and improving the display effect.

[0046] In addition, the color filter substrate in the embodiment of the present application, in addition to including the light filtering layer 1, may also include other functional film layers such as a substrate 2 and a protective layer 3. The specific film layer structure in the color filter substrate needs to be determined according to actual usage requirements, and the embodiment of the present application does not limit this.

[0047] In some embodiments, please refer to Figure 2 , the second light filtering portion 12 includes a light filtering body 121 and a first opening 122 formed through it along its thickness direction X, and at least a part of the first light filtering portion 11 is located within the first opening 122.

[0048] The second light filtering portion 12 includes a light filtering body 121 and a first opening 122. The first opening 122 can be formed by means such as cutting. The first light filtering portion 11 is located within the first opening 122. The first opening 122 plays a role of positioning and limiting the first light filtering portion 11. The shapes of the first opening 122 and the first light filtering portion 11 include but are not limited to circular, square, and polygonal shapes, etc.

[0049] In the embodiment of the present application, the existence of the light filtering body 121 replaces the black matrix structure in the traditional color filter substrate, thereby being able to further increase the light incident amount and improve the transmittance. At the same time, since the light filtering body 121 is an integral structure, when preparing the light filtering layer 1 in the embodiment of the present application, only the light filtering body 121 needs to be formed, then a plurality of first openings 122 are formed on the light filtering body 121, and the first light filtering portion 11 is filled and formed within the first openings 122. In this way, it is not necessary to design different sizes of the second light filtering portion 12 according to the shape and spacing of adjacent first light filtering portions 11, thereby being able to simplify the design of the second light filtering portion 12.

[0050] In some embodiments, referring to Figure 3 and Figure 4 , the light filtering layer 1 further includes a light shielding portion 13. The light shielding portion 13 is formed with a second opening 131 and a third opening 132 penetrating along its own thickness direction X. The first light filtering portion 11 is located in the second opening 131, and the second light filtering portion 12 is located in the third opening 132.

[0051] The light shielding portion 13 can completely absorb ambient light, further reducing the influence of ambient light reflection on the display effect. Optionally, the light shielding portion 13 is a black matrix structure. The light shielding portion 13 includes a second opening 131 and a third opening 132 respectively for accommodating the first light filtering portion 11 and the second light filtering portion 12. The number and aperture size of the second opening 131 may be the same as or different from those of the third opening 132, which specifically needs to be determined according to the size and structure of the first light filtering portion 11 and the second light filtering portion 12. Optionally, the second opening 131 and the third opening 132 are staggered, and a third opening 132 is arranged between adjacent second openings 131.

[0052] In the embodiments of the present application, by providing the second opening 131 and the third opening 132 on the light shielding portion 13, the arrangement of the first light filtering portion 11 and the second light filtering portion 12 is realized. From the perspective of the manufacturing process, the color filter substrate provided by the embodiments of the present application can be prepared by cutting a third opening 132 on the black matrix and forming the second light filtering portion 12 in the third opening 132 on the basis of a traditional color filter substrate, which has strong versatility.

[0053] In some embodiments, the preset value is 60%.

[0054] When the transmittance of the first light filtering portion 11 or the second light filtering portion 12 to a certain color type of light is greater than the preset value, it indicates that the first light filtering portion 11 or the second light filtering portion 12 has a high transmittance to the color type of light. As can be seen from the foregoing content, the transmittance of the first light filtering portion 11 to the light within the first preset wavelength range is greater than the preset value, and the transmittance of the second light filtering portion 12 to the light within the second preset wavelength range is greater than the preset value. Therefore, the first light filtering portion 11 has a high transmittance to the light within the first preset wavelength range, and the second light filtering portion 12 has a high transmittance to the light within the second preset wavelength range.

[0055] On this basis, in the embodiment of the present application, the preset value is set to 60%, that is, only when the transmittance of the light exceeds 60%, can it be shown that the first light filtering part 11 or the second light filtering part 12 has a relatively high transmittance to the light, and the wavelength range of the light can be within the first preset wavelength range or the second preset wavelength range. By limiting the size of the preset value, the embodiment of the present application standardizes the first preset wavelength range and the second preset wavelength range, so that the first preset wavelength range and the second preset wavelength range can be more clearly judged according to the structures of the first light filtering part 11 and the second light filtering part 12.

[0056] In some embodiments, the second preset wavelength range is within 380nm to 430nm, and / or 480nm to 510nm, and / or 560nm to 590nm, and / or 660nm to 950nm.

[0057] The different colors in the picture presented by the display device are usually formed by mixing the three primary colors of red, green, and blue. Therefore, the color of the light passing through the single first light filtering part 11 is usually one of red, green, and blue, and the wavelength ranges of these lights are usually 430nm to 480nm, 510nm to 560nm, and 590nm to 660nm.

[0058] On this basis, by restricting the second preset wavelength range to be outside the wavelength range of the light filtered by the first light filtering part 11, the embodiment of the present application enables the second light filtering part 12 to have a relatively low transmittance to red, green, and blue lights, so that the second light filtering part 12 can absorb red, green, and blue lights in the external environment, reducing the risk of light reflection and affecting the display picture. While increasing the light input amount, the risk of light reflection is further reduced.

[0059] In a second aspect, please refer to Figure 5 , the embodiment of the present application provides a display module, including a substrate 4, a light-emitting device layer 5, and the color filter substrate in any of the foregoing embodiments, which are stacked. The color filter substrate is located on the side of the light-emitting device layer 5 away from the substrate 4. The light-emitting device layer 5 includes a plurality of light-emitting units 51, and the orthographic projection of the light-emitting unit 51 on the substrate 4 at least partially overlaps with the orthographic projection of the first light filtering part 11 on the substrate 4.

[0060] The substrate 4 can be made of materials such as polyimide (PI). The light-emitting device layer 5 is located between the substrate 4 and the color filter substrate. The light-emitting device layer 5 includes a plurality of light-emitting units 51 for emitting light of different colors, and the plurality of light-emitting units 51 are correspondingly arranged with the corresponding first light-filtering parts 11. Exemplarily, the plurality of light-emitting units 51 include red light-emitting units 51, blue light-emitting units 51, and green light-emitting units 51, and the orthographic projections of the light-emitting units 51 of the corresponding colors on the substrate 4 are located within the orthographic projections of the first light-filtering parts 11 of the corresponding colors on the substrate 4.

[0061] For application scenarios such as vehicle-mounted displays, the entire display device needs to be able to achieve a photosensitive function. In this case, the display module provided by the embodiments of the present application can be applied to these scenarios to increase the light incident amount of the entire display device, thereby improving the photosensitive effect of the display device.

[0062] It should be noted that the display module provided by the embodiments of the present application has the beneficial effects of the color filter substrate provided by the embodiments of the present application. For the specific description of the color filter substrate, reference can be made to the above embodiments, and details will not be repeated in this embodiment.

[0063] In some embodiments, please refer to Figure 6 , the substrate 4 includes a third light-filtering part 41. The transmittance of the third light-filtering part 41 for light within a third preset wavelength range is greater than a preset value, and the third preset wavelength range does not overlap with the first preset wavelength range.

[0064] The statement in the embodiments of the present application that "the transmittance of the third light-filtering part 41 for light within a third preset wavelength range is greater than a preset value" means that the light within the third preset wavelength range is more likely to pass through the third light-filtering part 41 than other light, that is, the third light-filtering part 41 can have a high transmittance for specific color light within the third preset wavelength range.

[0065] The third preset wavelength range does not overlap with the first preset wavelength range, that is, for the light with a high transmittance at the first light-filtering part 11, the transmittance at the third light-filtering part 41 is low. And the light with a high transmittance at the first light-filtering part 11 is usually the specific color light that the light-emitting unit 51 can emit. In summary, the transmittance of the light emitted by the light-emitting unit 51 at the third light-filtering part 41 is low.

[0066] This design can, on the one hand, enable most ambient light to enter the photosensitive component through the third light filtering part 41, thereby realizing the photosensitive function. On the other hand, since part of the light emitted by the light emitting unit 51 will be reflected inside the display module and reach the third light filtering part 41, by setting the third preset wavelength range not to overlap with the first preset wavelength range, the risk of the light emitted by the light emitting unit 51 entering the photosensitive component can be reduced, the influence of the light emitted by the light emitting unit 51 on the photosensitive effect can be reduced, and the photosensitive accuracy can be improved.

[0067] In some embodiments, the second preset wavelength range is the same as the third preset wavelength range, that is, the second light filtering part 12 and the third light filtering part 41 include the same special dye, so that they can have a higher transmittance for light of the same color.

[0068] In a third aspect, please refer to Figure 7 , an embodiment of the present application provides a display device, including a display area AA and a photosensitive area FA. The transmittance of the photosensitive area FA is greater than that of the display area AA. The display device includes the display module of any of the foregoing embodiments located in the photosensitive area FA.

[0069] The display device provided by the embodiment of the present application is a full-screen display device. The display area AA is mainly used to achieve the display effect. In addition to achieving the photosensitive effect, the photosensitive area FA can also play a display effect, that is, the display area AA and the photosensitive area FA emit light together to present a corresponding display picture. Exemplarily, the display area AA surrounds the outer peripheral side of the photosensitive area FA.

[0070] The display module provided by the embodiment of the present application is disposed in the photosensitive area FA of the display device. Therefore, the display device has the beneficial effects of the display module provided by the embodiment of the present application. For specific descriptions of the color filter substrate and the display module, reference can be made to the above embodiments, which will not be elaborated herein.

[0071] In a fourth aspect, please refer to Figure 8 and FIG. 9. An embodiment of the present application provides a method for manufacturing a display device, including:

[0072] S100: Form a light emitting device layer on one side of the substrate. The light emitting device layer includes a plurality of light emitting units.

[0073] Please refer to Figure 9a , in step S100, the light emitting device layer 5 is formed on one side of the substrate 4 and includes a plurality of different types of light emitting units 51. Optionally, the plurality of light emitting units 51 include a red light emitting unit 51, a blue light emitting unit 51, and a green light emitting unit 51.

[0074] S110: A light filtering layer is formed on a side of the light-emitting device layer facing away from the substrate. The light filtering layer includes a plurality of first light filtering portions and second light filtering portions located between adjacent first light filtering portions. A positive projection of the first light filtering portion on the substrate overlaps at least partially with a positive projection of the light-emitting unit on the substrate.

[0075] Please refer to Figure 9b , in step S110, the light filtering layer 1 is formed on the light-emitting side of the light-emitting device layer 5. The light-emitting unit 51 is correspondingly arranged with the first light filtering portion 11. Light emitted by the light-emitting unit 51 can be filtered by the first light filtering portion 11 and exit, thereby forming a corresponding display screen. Optionally, a center of a positive projection of the light-emitting unit 51 on the substrate overlaps with a center of a positive projection of the first light filtering portion 11 on the substrate.

[0076] In addition, in addition to the first light filtering portion 11 being formed on the light filtering layer 1, a second light filtering portion 12 is also formed. Among them, a transmittance of light in a first preset wavelength range by the first light filtering portion 11 and a transmittance of light in a second preset wavelength range by the second light filtering portion 12 are both greater than a preset value, and the first preset wavelength range and the second preset wavelength range do not overlap.

[0077] In the embodiment of the present application, by providing the second light filtering portion 12, the light incident amount is increased, thereby improving the photosensitive effect. At the same time, in the embodiment of the present application, the second light filtering portion 12 is also enabled to absorb light in the first preset wavelength range, thereby reducing reflection of light in the first preset wavelength range in the external environment at the second light filtering portion 12, reducing the influence of ambient light reflection on the display screen, and improving the display effect.

[0078] It should be noted that for some display devices, a photosensitive function needs to be realized everywhere on the display device. In this case, the second light filtering portion 12 can be distributed in all areas of the display device. However, for other display devices, the display device includes a display area and a photosensitive area, and a transmittance of the photosensitive area is greater than that of the display area. The photosensitive area can simultaneously realize a display function and a photosensitive function. In this case, the second light filtering portion 12 can be arranged only in the photosensitive area to improve the photosensitive effect in the photosensitive area.

[0079] In some embodiments, please refer to Figure 10 and FIG. 11. After step S110, the method further includes:

[0080] S120: Part of the material in the substrate is removed to form a fourth opening penetrating the substrate in the thickness direction.

[0081] Please refer to Figure 11a, in step S120, the fourth opening 42 is used to form the third light filtering portion subsequently. Since the third light filtering portion is usually not resistant to high temperatures, while the preparation of some film layers needs to be carried out under high temperature conditions. Therefore, the third light filtering portion needs to be prepared after other film layers are completed. Among them, the number of the fourth openings 42 can be one or multiple, and the embodiments of the present application do not limit this.

[0082] S130: Form a third light filtering portion in the fourth opening. The transmittance of the third light filtering portion for light within a third preset wavelength range is greater than a preset value, and the third preset wavelength range does not overlap with the first preset wavelength range.

[0083] Please refer to Figure 11b , in step S130, by setting the third light filtering portion 41, most ambient light can be made to enter the photosensitive component more easily. At the same time, by setting the third preset wavelength range not to overlap with the first preset wavelength range, the risk of the light emitted by the light emitting unit 51 entering the photosensitive component can be reduced, the influence of the light emitted by the light emitting unit 51 on the photosensitive effect can be reduced, and the photosensitive accuracy can be improved.

[0084] Although the disclosed embodiments of the present application are as above, the content described is only an embodiment adopted for the convenience of understanding the present application and is not used to limit the present invention. Any person skilled in the technical field to which the present application pertains, without departing from the spirit and scope disclosed by the present application, can make any modifications and changes in the form of implementation and details, but the protection scope of the present application shall still be subject to the scope defined by the appended claims.

[0085] The above is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the sake of convenience and brevity of description, the replacement of other connection methods described above and the like can refer to the corresponding processes in the foregoing method embodiments and will not be repeated here. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should all be covered within the protection scope of the present application.

Claims

1. A display module, characterized in that, A substrate, a light-emitting device layer, and a color filter substrate are stacked. The light-emitting device layer includes a plurality of light-emitting units. The color filter substrate is located on a side of the light-emitting device layer facing away from the substrate. The color filter substrate includes a light-filtering layer. The light-filtering layer includes a plurality of first light-filtering portions and second light-filtering portions located between adjacent first light-filtering portions. A positive projection of the light-emitting unit on the substrate at least partially overlaps with a positive projection of the first light-filtering portion on the substrate. The first light-filtering portion is configured to filter light emitted by the light-emitting unit. The substrate includes a third light-filtering portion. A positive projection of the third light-filtering portion on the light-emitting device layer is at least partially located between adjacent light-emitting units. Wherein, a transmittance of the first light-filtering portion for light within a first preset wavelength range and a transmittance of the second light-filtering portion for light within a second preset wavelength range are both greater than a preset value. The first preset wavelength range and the second preset wavelength range do not overlap. A transmittance of the third light-filtering portion for light within a third preset wavelength range is greater than the preset value. The third preset wavelength range and the first preset wavelength range do not overlap. The third light-filtering portion is configured to be provided corresponding to a photosensitive component.

2. The display module according to claim 1, wherein The second light-filtering portion includes a light-filtering body and a first opening formed through the light-filtering body along its thickness direction. At least part of the first light-filtering portion is located within the first opening.

3. The display module according to claim 1, wherein The light-filtering layer further includes a light-shielding portion. The light-shielding portion is formed with a second opening and a third opening through its thickness. The first light-filtering portion is located within the second opening. The second light-filtering portion is located within the third opening.

4. The display module according to claim 1, wherein, The preset value is 60%.

5. The display module according to claim 4, wherein The second preset wavelength range is within 380 nm to 430 nm, and / or 480 nm to 510 nm, and / or 560 nm to 590 nm, and / or 660 nm to 950 nm.

6. The display module according to claim 1, wherein The second preset wavelength range coincides with the third preset wavelength range.

7. A display device, characterized in that, A display device includes a display area and a photosensitive area. A transmittance of the photosensitive area is greater than a transmittance of the display area. The display device includes a display module as described in any one of claims 1 to 6 located within the photosensitive area.

8. A method for manufacturing a display device, characterized in that, Comprising: Forming a light-emitting device layer on one side of a substrate. The light-emitting device layer includes a plurality of light-emitting units. Forming a light-filtering layer on a side of the light-emitting device layer facing away from the substrate. The light-filtering layer includes a plurality of first light-filtering portions and second light-filtering portions located between adjacent first light-filtering portions. A positive projection of the first light-filtering portion on the substrate at least partially overlaps with a positive projection of the light-emitting unit on the substrate. The first light-filtering portion is configured to filter light emitted by the light-emitting unit. A light transmittance of the first light-filtering portion for light within a first preset wavelength range and a transmittance of the second light-filtering portion for light within a second preset wavelength range are both greater than a preset value. The first preset wavelength range and the second preset wavelength range do not overlap. Removing at least part of the material in the substrate to form a fourth opening penetrating through the substrate in the thickness direction. A third light filtering portion is formed within the fourth opening, a positive projection of the third light filtering portion on the light emitting device layer is at least partially located between adjacent ones of the light emitting units, a light transmittance of the third light filtering portion for light within a third preset wavelength range is greater than the preset value, the third preset wavelength range does not overlap with the first preset wavelength range, and the third light filtering portion is provided corresponding to a photosensitive component.

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