Display panel and its manufacturing method, display device

Abstract

This invention discloses a display panel and its manufacturing method and display device. The display panel includes: a substrate and a light-emitting structure layer, an encapsulation layer, a color filter layer and a cover plate sequentially stacked on the substrate. The substrate includes a first display area and a second display area outside the first display area. The light transmittance of the first display area is greater than that of the second display area. The color filter layer includes multiple filters, including filters of three different colors. Multiple protrusion structures are provided between the color filter layer and the cover plate. The multiple protrusion structures are arranged one-to-one with at least one color filter in the first display area in a direction perpendicular to the substrate. Each protrusion structure includes at least one protrusion. The protrusion in the protrusion structure has an inclined surface that is in close contact with the filter corresponding to the protrusion structure. Each protrusion structure and its corresponding filter constitute a light adjustment structure for deflecting incident light at the inclined surface to move it away from the center of the filter in the light adjustment structure.

Description

Technical Field

[0001] This invention generally relates to the field of display technology, and specifically to a display panel, its manufacturing method, and a display device. Background Technology

[0002] COE (Color Filter On Encapsulation) technology is a technical solution to replace POL (Polarizer) for anti-glare in OLED (Organic Light-Emitting Diode) display panels. Its working principle is as follows: Figure 1 As shown, a black matrix (BM, BlackMatrix) is set in the same layer between color filter films (RGBresin). Figure 1 The solid black part in the middle realizes the external ambient light ( Figure 1 The absorption of light by the solid arrow in the middle, and the use of a colored filter film to filter and reflect ambient light ( ) Figure 1 (Dashed arrow in the middle). COE technology can improve the light transmittance of OLED display panels, giving the display screen a better display effect. Therefore, COE technology is also widely used in under-display camera (FDC) products. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a display panel, a method for manufacturing the same, and a display device.

[0004] In a first aspect, embodiments of the present invention provide a display panel, comprising: a substrate and a light-emitting structure layer, an encapsulation layer, a color filter layer and a cover plate sequentially stacked on the substrate, wherein the substrate includes a first display area and a second display area other than the first display area, and the light transmittance of the first display area is greater than the light transmittance of the second display area;

[0005] The color filter layer includes a plurality of filters located in the first display area and the second display area, the plurality of filters including a first filter, a second filter and a third filter of different colors;

[0006] A plurality of protruding structures are provided between the color filter layer and the cover plate. The plurality of protruding structures are arranged one-to-one with the filters of at least one color in the first display area in a first direction. Each of the protruding structures includes at least one protrusion. The protrusion in the protruding structure has an inclined surface that is in close contact with the filter corresponding to the protruding structure.

[0007] Each of the protruding structures and its corresponding filter constitutes a light adjustment structure for deflecting incident light at the inclined surface away from the center of the filter in the light adjustment structure.

[0008] Wherein, the first direction is the direction perpendicular to the substrate.

[0009] In some examples, the light-emitting structure layer includes an anode layer, a light-emitting layer, and a cathode layer stacked sequentially, wherein the anode layer is closer to the substrate than the cathode layer, and the anode layer includes a plurality of anodes, wherein the plurality of anodes are disposed in a one-to-one correspondence with the plurality of filters in the first direction;

[0010] Within the first display area, the orthographic projection of the anode corresponding to the filter in the light adjustment structure in the first direction covers the orthographic projection of the light adjustment structure in the first direction.

[0011] In some examples, within the first display area, the orthographic projection of the anode corresponding to the filter in the light adjustment structure in the first direction coincides with the orthographic projection of the light adjustment structure in the first direction.

[0012] In some examples, the protrusion structure includes a first protrusion with an inverted trapezoidal cross-section in the first direction; a filter corresponding to the protrusion structure covers the first protrusion.

[0013] In some examples, the refractive index of the filter corresponding to the protrusion structure is greater than the refractive index of the protrusion structure.

[0014] In some examples, the protrusion structure includes a second protrusion, the cross-section of which in the first direction comprises two spaced-apart trapezoids, and the filter corresponding to the protrusion structure has an inverted trapezoidal cross-section in the first direction, the protrusion structure surrounding and adjacent to the outer side of its corresponding filter.

[0015] In some examples, the refractive index of the filter corresponding to the protrusion structure is less than the refractive index of the protrusion structure.

[0016] In some examples, the protrusion structure includes a first protrusion and a second protrusion, the first protrusion having an inverted trapezoidal cross-section in the first direction, and the second protrusion having two spaced-apart regular trapezoids in the first direction, the second protrusion surrounding the first protrusion and spaced apart;

[0017] The filter corresponding to the protrusion structure covers the first protrusion and at least covers the surface of the second protrusion facing the first protrusion.

[0018] In some examples, the refractive index of the filter corresponding to the protrusion structure is greater than the refractive index of the first protrusion and less than the refractive index of the second protrusion.

[0019] In some examples, the protrusion structure is integrally formed with the cover plate or formed separately.

[0020] In some examples, the height of the protrusion is 1 μm to 3 μm, and the angle between the inclined surface and the cover plate is 40° to 70°.

[0021] In some examples, the color filter layer further includes a first black matrix located between adjacent filters within the second display area; and / or,

[0022] The color filter layer also includes a second black matrix, which is located between adjacent filters in the first display area. The second black matrix between each pair of adjacent filters in the first display area has an opening.

[0023] In some examples, the display panel further includes an optical adhesive layer located between the encapsulation layer and the color filter layer.

[0024] Secondly, embodiments of the present invention provide a display device, including an under-display camera and a display panel as described above, wherein the under-display camera and a first display area of ​​a substrate in the display panel are correspondingly disposed in a direction perpendicular to the substrate.

[0025] Thirdly, embodiments of the present invention provide a method for manufacturing a display panel, characterized in that it includes:

[0026] Prepare a cover layer, the cover layer including a cover plate and a plurality of protrusion structures formed on one side of the cover plate, each of the protrusion structures including at least one protrusion;

[0027] A color filter layer is formed on one side of the cover layer, the color filter layer is located on the side of the cover plate facing the protruding structure, the color filter layer includes a plurality of filters, the plurality of filters including a first filter, a second filter and a third filter of different colors;

[0028] A substrate is provided, the substrate including a first display area and a second display area other than the first display area, wherein the light transmittance of the first display area is greater than the light transmittance of the second display area;

[0029] A light-emitting structure layer and an encapsulation layer are sequentially formed on one side of the substrate;

[0030] A cover plate structure containing the cover layer and the color filter layer is inverted and placed on the side of the encapsulation layer away from the substrate, with the color filter layer closer to the substrate than the cover layer;

[0031] The plurality of filters are located in the first display area and the second display area. The plurality of protruding structures are arranged one-to-one with filters of at least one color in the first display in a first direction. The protrusions in the protruding structures have inclined surfaces that are in close contact with the filters corresponding to the protruding structures.

[0032] Each of the protruding structures and its corresponding filter constitutes a light adjustment structure for deflecting incident light at the inclined surface away from the center of the filter in the light adjustment structure.

[0033] The first direction is perpendicular to the substrate.

[0034] In some examples, the fabrication of the cover layer includes:

[0035] Photoresist is coated onto a glass substrate;

[0036] The photoresist is masked, exposed, and developed to form a photoresist retention area;

[0037] The photoresist retention area and the glass substrate are etched to form a cover layer including the protruding structure and the cover plate. The protruding structure includes a first protrusion, and the cross-section of the first protrusion in the direction perpendicular to the cover plate is trapezoidal; or...

[0038] The preparation of the cover layer includes:

[0039] A first photosensitive curable adhesive is coated onto a glass substrate;

[0040] The first photosensitive curable adhesive is masked, exposed, and developed to form the raised structure;

[0041] The protrusion structure includes a first protrusion, the first protrusion having a trapezoidal cross-section in the direction perpendicular to the glass substrate; or,

[0042] The preparation of the cover layer includes:

[0043] A second photosensitive curable adhesive is coated onto a glass substrate;

[0044] The second photosensitive curable adhesive is masked, exposed, and developed to form the raised structure. The raised structure includes a second protrusion, and the cross-section of the second protrusion in the direction perpendicular to the glass substrate includes two inverted trapezoids spaced apart.

[0045] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0046] The display panel, its manufacturing method, and display device provided in this invention have a raised structure located in a first display area. The raised structure has an inclined surface that is in close contact with its corresponding filter. By utilizing the principle of refraction, the light incident through the cover plate can be deflected at the inclined surface of the raised structure to move away from the center of the filter corresponding to the raised structure. A portion of the light selected by the filter corresponding to the raised structure can enter the under-display camera from the inclined surface. That is, the raised structure can allow more light of a certain color to enter the under-display camera, ensuring the white balance of the under-display camera during imaging, thereby improving the shooting effect. Attached Figure Description

[0047] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0048] Figure 1 This is a schematic diagram illustrating the anti-glare working principle of COE technology in related technologies.

[0049] Figure 2 This is a schematic diagram illustrating the principle of COE technology applied in the FDC area in related technologies;

[0050] Figure 3 This is a schematic diagram of the structure of the display panel provided in the first embodiment of the present invention;

[0051] Figure 4 for Figure 3 A schematic diagram of the structure within the first display area of ​​the display panel shown;

[0052] Figure 5 This is a schematic diagram showing the relationship between the orthographic projection of the light adjustment structure on the substrate and the orthographic projection of the corresponding anode on the substrate provided in the first embodiment of the present invention.

[0053] Figure 6 This is a schematic diagram of the structure of the display panel provided in the second embodiment of the present invention;

[0054] Figure 7 This is a schematic diagram showing the relationship between the orthographic projection of the light adjustment structure on the substrate and the orthographic projection of the corresponding anode on the substrate provided in the second embodiment of the present invention.

[0055] Figure 8 This is a schematic diagram of the structure of the display panel provided in the third embodiment of the present invention;

[0056] Figure 9 A schematic diagram showing the relationship between the orthographic projection of the light adjustment structure on the substrate and the orthographic projection of the corresponding anode on the substrate provided in the third embodiment of the present invention;

[0057] Figure 10This is a schematic diagram of the structure of the display panel provided in the fourth embodiment of the present invention;

[0058] Figure 11 This is a schematic diagram showing the relationship between the orthographic projection of the light adjustment structure on the substrate and the orthographic projection of the corresponding anode on the substrate provided in the fourth embodiment of the present invention.

[0059] Figure 12 This is a schematic diagram of the structure of the display panel provided in the fifth embodiment of the present invention;

[0060] Figure 13 This is a schematic diagram showing the relationship between the orthographic projection of the light adjustment structure on the substrate and the orthographic projection of the corresponding anode on the substrate provided in the sixth embodiment of the present invention.

[0061] Figure 14 This is a schematic diagram of the preparation of the cover plate structure provided in the first embodiment of the present invention. Detailed Implementation

[0062] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0063] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] In products with under-display cameras, the display panel includes a normal area (the regular display area) and a FDC area (the area corresponding to the under-display camera). When COE technology is applied to the FDC area, refer to... Figure 2 The absence of a matrix (BM) between the color filters improves transmittance and reduces diffraction. Currently, the absorption of blue light by the PI (polyimide) substrate reduces the amount of blue light entering the under-display camera, affecting the white balance during photography and resulting in a yellowish image, leading to unsatisfactory shooting performance. Furthermore, if other factors reduce the amount of red (or green) light entering the under-display camera, it will also affect the white balance during photography, resulting in unsatisfactory shooting performance.

[0065] like Figure 3 and Figure 4As shown, the first embodiment of the present invention provides a display panel, including: a substrate 1 and a light-emitting structure layer 2, an encapsulation layer 3, a color filter layer and a cover plate 5 sequentially stacked on the substrate 1. The substrate 1 includes a first display area (i.e., the FDC area) and a second display area (i.e., the normal area) outside the first display area. The light transmittance of the first display area is greater than that of the second display area.

[0066] The color filter layer includes multiple filters located in the first display area and the second display area. The multiple filters include a first filter 41, a second filter 42 and a third filter 43 of different colors. For example, the first filter 41 is a red filter, the second filter 42 is a second filter, and the third filter 43 is a green filter.

[0067] A plurality of protrusion structures 6 are provided between the color filter layer and the cover plate 5. The protrusion structures 6 are arranged one-to-one with the filters of at least one color in the first display area in the first direction A. Each protrusion structure 6 includes at least one protrusion. The protrusion in the protrusion structure 6 has an inclined surface that is in close contact with the filter corresponding to the protrusion structure 6.

[0068] Each protruding structure 6 and its corresponding filter constitute the light adjustment structure 7. (Refer to...) Figure 4 The light adjustment structure 7, enclosed in a dashed box, is used to deflect the incident light at the inclined plane away from the center of the filter in the light adjustment structure 7.

[0069] Wherein, the first direction A is the direction perpendicular to the base 1;

[0070] Substrate 1 is preferably a polyimide (PI) substrate;

[0071] The design of the light-emitting structure layer 2 and the encapsulation layer 3 is the same as that of the prior art. The light-emitting structure layer 2 includes an anode layer 21, a light-emitting layer 22 and a cathode layer 23 stacked in sequence. The anode layer 21 is closer to the substrate 1 than the cathode layer 23. The anode layer 21 includes a plurality of anodes 211. The plurality of anodes 211 are arranged one-to-one with a plurality of filters in the first direction A.

[0072] In order to better illustrate the light adjustment function of the light adjustment structure 7 in this embodiment, it is preferred that the raised structure 6 and the second filter 42 (i.e. the second filter) in the first display area are arranged in a one-to-one correspondence in the first direction A. This can increase the amount of blue light entering the under-screen camera and solve the problem of yellowing in the image.

[0073] Similarly, if it is necessary to increase the amount of red light entering the under-display camera, multiple protruding structures can be set one-to-one with the first filter 42 (i.e., the red filter) in the first display area in the first direction A; if it is necessary to increase the amount of green light entering the under-display camera, multiple protruding structures can be set one-to-one with the third filter 42 (i.e., the green filter) in the first display area in the first direction A.

[0074] Reference Figure 3 and Figure 4 The second filter 42 located in the second display area has no corresponding protrusion structure in the first direction, while the second filter 42 located in the first display area is in close contact with the protrusion structure in the first direction. It can be understood that the shape of the second filter in the first display area differs from that in the second display area. To distinguish them, they are labeled as second filter 421 and second filter 422, corresponding to the first display area and the second display area, respectively. That is, the protrusion structure 6 corresponds one-to-one with the second filter 421 in the first direction.

[0075] In this embodiment, the protrusion structure 6 includes a first protrusion 61, the cross section of the first protrusion 61 in the first direction A is an inverted trapezoid; the second filter 421 corresponding to the protrusion structure 6 covers the first protrusion 61.

[0076] Understandably, when the cross-section of the first protrusion 61 in the first direction is an inverted trapezoid, the first protrusion 61 has a frustum-shaped structure with inverted trapezoidal sides, which is easy to achieve in actual manufacturing. However, the cross-section of the first protrusion 61 in the first direction includes, but is not limited to, an inverted trapezoid. For example, the cross-section of the first protrusion 61 in the first direction can also be an inverted semicircle, a polygon with multiple inclined planes, etc.

[0077] In this embodiment, the refractive indices of the materials used to fabricate the protruding structure 6 and the second filter 421 covering the protruding structure 6 are different. The refractive index of the protruding structure 6 is less than that of the second filter 421. When light passes through the protruding structure 6 and enters the second filter 421 corresponding to the protruding structure 6, it will be refracted at the inclined surface. (Refer to...) Figure 4 The light path shown is such that the light is deflected at the inclined plane, and only blue light passes through the second filter 421. The light is deflected in a direction away from the center of the second filter 421 and emitted from between the anodes 211 of the first display area. It is then received by the under-display camera 8, thereby increasing the amount of blue light entering the under-display camera 8, improving the yellowing phenomenon caused by the PI substrate, and thus improving the shooting effect.

[0078] In this embodiment, the cover plate 5 and the raised structure 6 are integrally formed. Both the cover plate 5 and the raised structure 6 are made of glass with a refractive index of 1.47; the second filter 421 has a refractive index of 1.6. Due to the difference in refractive indices, the angle of refraction is smaller than the angle of incidence. After light passes through the second filter 421, red and green light are absorbed, leaving only blue light. Figure 4 The light path shown enters the under-display camera 8.

[0079] In a preferred embodiment, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction covers the orthographic projection of the light adjustment structure 7 containing the second filter 421 in the first direction. (Refer to...) Figure 5 The light adjustment structure 7, which includes the second filter 421 and the first protrusion 61, has its orthographic projection in the first direction falling within the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction. This arrangement does not affect the amount of light originally received by the under-display camera 8 from between the anodes 211 in the first display area. At the same time, the under-display camera 8 can also receive some of the light that was originally blocked by the anodes 211, thereby increasing the amount of blue light received by the under-display camera 8.

[0080] Furthermore, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction coincides with the orthographic projection of the light adjustment structure 7, which includes the second filter 421 and the first protrusion 61, in the first direction. This arrangement ensures that the amount of light entering the under-display camera 8 from between adjacent anodes 211 in the first display area remains unchanged, while also allowing as much of the light originally blocked by the anodes 211 as possible to be refracted at the inclined surface and received by the under-display camera 8. This effectively increases the amount of blue light entering the camera and improves the yellowing phenomenon caused by the PI substrate.

[0081] In a preferred embodiment, the height of the protrusion 6 is 1μm to 3μm, and the angle between the inclined surface and the cover plate 5 is 40° to 70°.

[0082] In this embodiment, when the cross-section of the first protrusion 61 in the first direction is an inverted trapezoid, the height of the inclined surface is the same as the height of the protrusion structure 6; α indicates the angle between the inclined surface of the first protrusion 61 and the cover plate 5, and α is 40° to 70°. By designing the height of the inclined surface and the angle between the inclined surface and the cover plate 5, the light refracted by the inclined surface can enter the under-screen camera 8 from the anode 211 of the first display area as much as possible.

[0083] Understandably, referring to Figure 3 The color filter layer also includes a first black matrix 9, which is located between adjacent filters in the second display area. The first black matrix 9 is set on the same layer as the filters, and each filter corresponds to a sub-pixel. The first black matrix 9 can avoid the problem of color crossing between sub-pixels.

[0084] In addition, the color filter layer may also include a second black matrix (not shown in the figure). The second black matrix is ​​located between adjacent filters in the first display area. The second black matrix between each pair of adjacent filters in the first display area has an opening, which can play a certain role in preventing color bleeding. At the same time, it can allow light passing through the aforementioned inclined surface to pass through the opening and be incident on the under-display camera.

[0085] Furthermore, the display panel also includes an optical adhesive layer 10 (such as OCR adhesive or OCA adhesive). The cover plate 5, the raised structure 6, and the color filter layer constitute the cover plate structure, and the cover plate structure and the encapsulation layer 3 are bonded together by the optical adhesive layer 10.

[0086] Furthermore, a circuit driving layer (not shown) and a planarization layer (PLN) are stacked between the substrate 1 and the light-emitting structure layer 2. The circuit driving layer includes multiple thin-film transistors, each of which is correspondingly arranged with multiple anodes, and the drain of each thin-film transistor is electrically connected to the corresponding anode.

[0087] In the following embodiments, for the sake of clear description of the display panel, the display panel will also be described with the raised structure 6 and the second filter 421 (i.e., blue filter) in the first display area being arranged in a one-to-one correspondence in the first direction A.

[0088] A second embodiment of the present invention provides another structure for the display panel, such as... Figure 6 As shown, it also includes a substrate 1, a light-emitting structure layer 2, an encapsulation layer 3, a color filter layer, and a cover plate 5 stacked in sequence. The functions of each layer are the same as those in the first embodiment, and will not be repeated here.

[0089] A protruding structure 6 is provided on one side of the cover plate 5. The protruding structure 6 includes a first protrusion 61, and the cross section of the first protrusion 61 in the first direction is an inverted trapezoid. A second filter 421 corresponding to the protruding structure 6 covers the first protrusion 61.

[0090] Unlike the first embodiment, in this embodiment, the cover plate 5 and the raised structure 6 are formed separately, and their materials are different. The cover plate 5 is made of glass with a refractive index of 1.47; the raised structure 6 is made of a first photocurable adhesive, such as an OC adhesive with a refractive index of 1.45 to 1.5, and more preferably an OC adhesive with a refractive index of 1.47. The raised structure 6 formed by the first protrusion 61 is essentially a microprism structure. The second filter 421 has a refractive index of 1.6, which is greater than the refractive index of the raised structure 6. Due to the difference in refractive indices between the raised structure 6 and the second filter 421, the angle of refraction is smaller than the angle of incidence. When light enters the corresponding second filter 421 from the raised structure 6, it will be refracted at the inclined surface. Figure 6The schematic light path shows that the light is deflected in a direction away from the center of the second filter 421, which allows more blue light to enter the under-display camera 8 from between the anodes 211 of the first display area, increasing the amount of blue light entering the under-display camera 8, improving the yellowing phenomenon caused by the PI substrate, and thus improving the shooting effect.

[0091] In this embodiment, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction covers the orthographic projection of the light adjustment structure 7 containing the second filter 421 in the first direction. (Refer to...) Figure 7 The light adjustment structure 7, which includes the second filter 421 and the first protrusion 61, has its orthographic projection in the first direction falling within the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction. This arrangement does not affect the amount of light originally received by the under-display camera 8 from between the anodes 211 in the first display area. At the same time, the under-display camera 8 can also receive some of the light that was originally blocked by the anodes 211, thereby increasing the amount of blue light received by the under-display camera 8.

[0092] Furthermore, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction coincides with the orthographic projection of the light adjustment structure 7, which includes the second filter 42 and the first protrusion 61, in the first direction. This ensures that the amount of light entering the under-display camera 8 from between adjacent anodes 211 within the first display area remains unchanged, while also maximizing the amount of light originally blocked by the anodes 211, which is then refracted at the inclined surface and received by the under-display camera 8. This effectively increases the amount of blue light entering the camera and improves the yellowing phenomenon caused by the PI substrate.

[0093] A third embodiment of the present invention provides yet another structure for the display panel, such as... Figure 8 As shown, it also includes a substrate 1, a light-emitting structure layer 2, an encapsulation layer 3, a color filter layer, and a cover plate 5 stacked in sequence. The functions of each layer are the same as those in the first embodiment, and will not be repeated here.

[0094] A raised structure 6 is provided on one side of the cover plate 5. Unlike the first embodiment, the raised structure 6 includes a second protrusion 62. The cross-section of the second protrusion 62 in the first direction includes two spaced regular trapezoids. The cross-section of the second filter 421 corresponding to the raised structure 6 in the first direction is an inverted trapezoid. The raised structure 6 surrounds and is close to the outside of its corresponding filter. In addition, in this embodiment, the cover plate 5 and the raised structure 6 are formed separately and are made of different materials. For example, the cover plate 5 is made of glass with a refractive index of 1.47. The raised structure 6 is made of a second photosensitive curable adhesive, such as an OC adhesive with a refractive index of 1.75 to 1.85. Each second protrusion 62 is essentially a microprism structure.

[0095] In this embodiment, β indicates the angle between the inclined surface of the second protrusion 62 and the cover plate 5, where β is 40° to 70°; the second protrusion 62 is arranged around its corresponding second filter 421. After light passes through the second filter 421, blue light is refracted at the inclined surface of the corresponding protrusion structure 6 (i.e., each second protrusion 62), as shown in the reference. Figure 6 The light path shown in the diagram is such that the blue light is deflected in a direction away from the center of the second filter 421, which allows more blue light to enter the under-display camera 8 from between the anodes 211 of the first display area, thereby increasing the amount of blue light entering the under-display camera 8, improving the yellowing phenomenon caused by the PI substrate, and thus improving the shooting effect.

[0096] In this embodiment, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction covers the orthographic projection of the light adjustment structure 7 containing the second filter 421 in the first direction. (Refer to...) Figure 9 The orthographic projection of the light adjustment structure 7, which includes the second filter 421 and the second protrusion 62, in the first direction falls within the orthographic projection of the corresponding anode 211 in the first direction. This arrangement does not affect the amount of light originally received by the under-display camera 8 from between the anodes 211 in the first display area. At the same time, the under-display camera 8 can also receive some of the light that was originally blocked by the anodes 211, thereby increasing the amount of blue light received by the under-display camera 8.

[0097] Furthermore, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction coincides with the orthographic projection of the light adjustment structure 7 containing the second filter 42 and the second protrusion 62 in the first direction. This arrangement ensures that the amount of light entering the under-display camera 8 from between adjacent anodes 211 in the first display area remains unchanged, while also allowing as much of the light originally blocked by the anodes 211 as possible to be refracted at the inclined surface and received by the under-display camera 8, thereby effectively increasing the amount of blue light entering the camera and improving the yellowing phenomenon caused by the PI substrate.

[0098] The fourth embodiment of the present invention provides another structure for the display panel, such as... Figure 10 As shown, it also includes a substrate 1, a light-emitting structure layer 2, an encapsulation layer 3, a color filter layer, and a cover plate 5 stacked in sequence. The functions of each layer are the same as those in the first embodiment, and will not be repeated in this embodiment.

[0099] A raised structure 6 is provided on one side of the cover plate 5. Unlike the first embodiment, in this embodiment, the raised structure 6 includes a first protrusion 61 and a second protrusion 62. The cross-section of the first protrusion 61 in the first direction is an inverted trapezoid, and the cross-section of the second protrusion 62 in the first direction includes two regular trapezoids spaced apart. The second protrusion 62 surrounds the first protrusion 61 and is spaced apart. The blue filter 421 corresponding to the raised structure 6 covers the first protrusion 61 and at least covers the surface of the second protrusion 62 facing the first protrusion 61.

[0100] The first protrusion 61 and the cover plate 5 are an integral structure, while the second protrusion 62 is designed separately. The first protrusion 61 and the cover plate 5 are both made of glass with a refractive index of 1.47; the second protrusion 62 is made of a second photosensitive curing adhesive, such as an OC adhesive with a refractive index of 1.75 to 1.85.

[0101] α indicates the angle between the inclined surface of the first protrusion 61 and the cover plate 5, where α is 40° to 70°; β indicates the angle between the inclined surface of the second protrusion 62 and the cover plate 5, where β is 40° to 70°; in actual implementation, α and β are the same.

[0102] Reference Figure 10 As shown in the light path, light is refracted at the inclined surface of the first protrusion 61 and the inclined surface of the second protrusion 62 adjacent to the second filter 421. When light enters the second filter 421 from the first protrusion 61, it is refracted at the inclined surface of the first protrusion 61, and when light enters the second protrusion 62 from the second filter 421, it is refracted at the inclined surface of the second protrusion 62. The refractive index of the second filter 421 is 1.6, which is greater than the refractive index of the first protrusion 61 and less than the refractive index of the second protrusion 62. Due to the difference in refractive index, the light is deflected in a direction away from the center of the second filter 421, which allows more blue light to enter the under-display camera 8 from between the anodes 211 of the first display area, increasing the amount of blue light entering the under-display camera 8, improving the yellowing phenomenon caused by the PI substrate, and thus improving the shooting effect.

[0103] In this embodiment, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction covers the orthographic projection of the light adjustment structure 7 containing the second filter 421 in the first direction. (Refer to...) Figure 11 The light adjustment structure 7, which includes a second filter 421, a first protrusion 61, and a second protrusion 62, has its orthographic projection in the first direction falling within the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction. This arrangement does not affect the amount of light originally received by the under-display camera 8 from between the anodes 211 in the first display area. At the same time, the under-display camera 8 can also receive some of the light that was originally blocked by the anodes 211, thereby increasing the amount of blue light received by the under-display camera 8.

[0104] Furthermore, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction coincides with the orthographic projection of the light adjustment structure 7, which includes the second filter 421, the first protrusion 61, and the second protrusion 62, in the first direction. This arrangement ensures that the amount of light entering the under-display camera 8 from between adjacent anodes 211 in the first display area remains unchanged, while also allowing as much of the light originally blocked by the anodes 211 as possible to be refracted at the inclined surface and received by the under-display camera 8. This effectively increases the amount of blue light entering the camera and improves the yellowing phenomenon caused by the PI substrate.

[0105] The fifth embodiment of the present invention also provides a structure for a display panel, such as... Figure 12 As shown, it also includes a substrate 1, a light-emitting structure layer 2, an encapsulation layer 3, a color filter layer, and a cover plate 5 stacked in sequence. The functions of each layer are the same as those in the first embodiment, and will not be repeated in this embodiment.

[0106] A raised structure 6 is provided on one side of the cover plate 5. Unlike the first embodiment, in this embodiment, the raised structure 6 includes a first protrusion 61 and a second protrusion 62. The cross-section of the first protrusion 61 in the first direction is an inverted trapezoid, and the cross-section of the second protrusion 62 in the first direction includes two regular trapezoids spaced apart. The second protrusion 62 surrounds the first protrusion 61 and is spaced apart. The blue filter 421 corresponding to the raised structure 6 covers the first protrusion 61 and at least covers the surface of the second protrusion 62 facing the first protrusion 61.

[0107] The cover plate 5, the first protrusion 61, and the second protrusion 62 are designed separately. The cover plate 5 is made of glass with a refractive index of 1.47. The first protrusion 61 is made of a first photosensitive curing adhesive, such as an OC adhesive with a refractive index of 1.45 to 1.5. The second protrusion 62 is made of a second photosensitive curing adhesive, such as an OC adhesive with a refractive index of 1.75 to 1.85.

[0108] α indicates the angle between the inclined surface of the first protrusion 61 and the cover plate 5, where α is 40° to 70°; β indicates the angle between the inclined surface of the second protrusion 62 and the cover plate 5, where β is 40° to 70°; in actual implementation, α and β are the same.

[0109] Reference Figure 12As shown in the light path, light is refracted at the inclined surface of the first protrusion 61 and the inclined surface of the second protrusion 62 that is in close contact with the second filter 421. When light enters the second filter 421 from the first protrusion 61, it is refracted at the inclined surface of the first protrusion 61, and when light enters the second protrusion 62 from the second filter 421, it is refracted at the inclined surface of the second protrusion 62. The refractive index of the second filter 421 is 1.6, which is greater than the refractive index of the first protrusion 61 and less than the refractive index of the second protrusion 62. Due to the difference in refractive index, the light is deflected in a direction away from the center of the second filter 421, which allows more blue light to enter the under-display camera 8 from between the anodes 211 of the first display area, increasing the amount of blue light entering the under-display camera 8, improving the yellowing phenomenon caused by the PI substrate, and thus improving the shooting effect.

[0110] In this embodiment, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction covers the orthographic projection of the light adjustment structure 7 containing the second filter 421 in the first direction. (Refer to...) Figure 13 The light adjustment structure 7, which includes a second filter 421, a first protrusion 61, and a second protrusion 62, has its orthographic projection in the first direction falling within the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction. This arrangement does not affect the amount of light originally received by the under-display camera 8 from between the anodes 211 in the first display area. At the same time, the under-display camera 8 can also receive some of the light that was originally blocked by the anodes 211, thereby increasing the amount of blue light received by the under-display camera 8.

[0111] Furthermore, within the first display area, the orthographic projection of the anode 211 corresponding to the second filter 421 in the first direction coincides with the orthographic projection of the light adjustment structure 7 containing the second filter 42 in the first direction. This arrangement ensures that the amount of light entering the under-display camera 8 from between adjacent anodes 211 in the first display area remains unchanged, while also allowing as much of the light originally blocked by the anodes 211 as possible to be refracted at the inclined surface and received by the under-display camera 8, thereby effectively increasing the amount of blue light entering the camera and improving the yellowing phenomenon caused by the PI substrate.

[0112] A sixth embodiment of the present invention provides a display device including an under-display camera and the aforementioned display panel. The under-display camera and a first display area on a substrate of the display panel are correspondingly disposed in a direction perpendicular to the substrate. This display device can be a mobile phone, tablet computer, laptop computer, or other display device integrating an under-display camera 8. By utilizing the display panel provided in any of the above embodiments of the present invention, the blue light intake of the under-display camera 8 can be effectively increased, avoiding the yellowing phenomenon in imaging caused by the PI substrate and improving the shooting effect.

[0113] A seventh embodiment of the present invention also provides a method for manufacturing a display panel, which can form the display panel provided in any of the above embodiments. The manufacturing method includes:

[0114] Prepare a cover layer, the cover layer including a cover plate 5 and a plurality of protrusion structures 6 formed on one side of the cover plate 5, the protrusion structure 6 including at least one protrusion;

[0115] A color filter layer is formed on one side of the cover layer. The color filter layer includes multiple filters, including a first filter 41, a second filter 42, and a third filter 43 of different colors. For example, the first filter 41 is a red filter, the second filter 42 is a blue filter, and the third filter 43 is a green filter.

[0116] A substrate 1 is provided, which includes a first display area corresponding to the under-display camera 8 and a second display area outside the first display area. The light transmittance of the first display area is greater than that of the second display area.

[0117] A light-emitting structure layer 2 and an encapsulation layer 3 are sequentially formed on a substrate 1;

[0118] The cover plate structure containing the cover layer and the color filter layer is inverted and placed on the side of the encapsulation layer 3 away from the substrate 1, with the color filter layer closer to the substrate 1 than the cover plate 5;

[0119] Among them, multiple filters are located in the first display area and the second display area, and multiple protrusion structures 6 are arranged one-to-one with filters of at least one color located in the first display area in the first direction A. The protrusions in the protrusion structure 6 have at least one inclined surface that is in close contact with the filter corresponding to the protrusion structure.

[0120] Each protruding structure 6 and its corresponding filter constitute a light adjustment structure 7, which is used to deflect the incident light at the inclined surface away from the center of the filter in the light adjustment structure 7.

[0121] The first direction A is perpendicular to the base 1.

[0122] In this embodiment, preferably, a plurality of protruding structures 6 are arranged in a one-to-one correspondence with the second filter 421 in the first display area in the first direction.

[0123] Within the first display area, the light adjustment structure 7, consisting of the protruding structure 6 and its corresponding second filter 421, can deflect the incident light at the inclined surface away from the center of the second filter 421 in the light adjustment structure 7. This allows some of the blue light that was originally blocked by the anode 211 corresponding to the second filter 421 to be emitted from the inclined surface and then enter the under-display camera 8 between the anodes 211 in the first display area. The substrate 1 is made of polyimide (PI), which can increase the amount of blue light entering the under-display camera, improve the yellowing phenomenon caused by the PI substrate, and thus improve the shooting effect.

[0124] As an alternative implementation, the following describes how to prepare the cover plate structure in the first embodiment, which includes a cover layer and a color filter layer.

[0125] Reference Figure 14 The preparation of the capping layer includes:

[0126] like Figure 14 (a) Photoresist 102, such as negative photoresist, is coated on a glass substrate 101;

[0127] The photoresist 102 is masked, exposed, and developed to form the photoresist retention area 103, as shown in the reference. Figure 14 (b);

[0128] The photoresist retention portion 103 and the glass substrate 101 are etched, such as by hydrofluoric acid etching, to form a cover plate 5 and a protrusion structure 6 located on one side of the cover plate 5. The protrusion structure 6 includes a first protrusion 61, and the cross section of the first protrusion 61 in the direction perpendicular to the cover plate 5 is trapezoidal.

[0129] The glass substrate is etched with hydrofluoric acid to form a cover plate 5 and a raised structure 6. The cover plate 5 includes a first region and a second region. The orthographic projection of the first region in a first direction coincides with the orthographic projection of the first display area in a first direction, and the orthographic projection of the second region in a first direction coincides with the orthographic projection of the second display area in a first direction.

[0130] Figure 14 (c) indicates the structure of the first region of the cover plate 5. It can be understood that, relative to the cover plate 5, the first protrusion 61 has a cross section that is trapezoidal in the direction perpendicular to the cover plate 5, and the first protrusion 61 has a truncated quadrangular structure with a trapezoidal side.

[0131] After the cover layer is formed, a color filter layer is formed. Specifically, this includes forming a first black matrix in a second region of the cover plate, and then forming multiple filters in both the first and second regions. The first black matrix is ​​located between adjacent filters within the second region. It should be noted that while forming the first black matrix, a second black matrix can be formed simultaneously within the first region. The second black matrix is ​​located between adjacent filters within the second display area and has openings.

[0132] like Figure 14 As shown in (d), a plurality of filters are formed in the first region of the cover plate 5, and the second filter 421 in the first region covers the corresponding protrusion structure 6.

[0133] Next, the cover structure is bonded to the side of the encapsulation layer 3 away from the substrate 1 by the optical adhesive layer 10. When the cover structure is inverted on the encapsulation layer 3, the protrusion structure 6 has a truncated quadrangular structure with an inverted trapezoidal side relative to the substrate 1.

[0134] As an alternative implementation, the method for preparing the cover plate structure in the second embodiment will be described below.

[0135] First, prepare the capping layer, which specifically includes:

[0136] A first photosensitive curable adhesive is coated on a glass substrate. The refractive index of the first photosensitive curable adhesive is 1.45 to 1.5.

[0137] The first photocurable adhesive is masked, exposed, and developed to form a raised structure;

[0138] The protrusion structure includes a first protrusion, the cross-section of which is trapezoidal in the direction perpendicular to the glass substrate.

[0139] It is understandable that, as a cover plate, the first protrusion has a trapezoidal cross section in the direction perpendicular to the cover plate, and the first protrusion has a truncated quadrangular structure with a trapezoidal side.

[0140] After the cover layer is formed, a color filter layer is formed. Specifically, this includes forming a first black matrix in a second region of the cover plate, and then forming multiple filters in both the first and second regions. The first black matrix is ​​located between adjacent filters within the second region. It should be noted that while forming the first black matrix, a second black matrix can be formed simultaneously within the first region. The second black matrix is ​​located between adjacent filters within the second display area and has openings.

[0141] The cover plate structure, which includes the cover layer and the color filter layer, is bonded to the side of the encapsulation layer away from the substrate by an optical adhesive layer. When the cover plate structure is inverted on the encapsulation layer, the raised structure has a truncated quadrangular structure with an inverted trapezoidal side relative to the substrate.

[0142] As an alternative implementation, the preparation of the cover plate structure in the third embodiment will be described below.

[0143] First, prepare the capping layer, which specifically includes:

[0144] A second photosensitive curable adhesive is coated on a glass substrate. The refractive index of the second photosensitive curable adhesive is 1.75 to 1.85.

[0145] The second photosensitive curable adhesive is masked, exposed, and developed to form a raised structure. The raised structure includes a second protrusion. The cross-section of the second protrusion in the first direction comprises two inverted trapezoids spaced apart. The cross-section of the filter corresponding to the raised structure in the first direction is a regular trapezoid. The raised structure surrounds and is adjacent to the outer side of its corresponding filter.

[0146] It is understandable that, with the glass substrate as the cover plate, the cross-section of the second protrusion in the first direction, relative to the cover plate, includes two inverted trapezoids spaced apart and the cross-section of the filter corresponding to the protrusion structure in the first direction is a regular trapezoid. At this time, the second protrusion has a truncated quadrangular structure with an inverted trapezoidal side.

[0147] After the cover layer is formed, a color filter layer is formed. Specifically, this includes forming a first black matrix in a second region of the cover plate, and then forming multiple filters in both the first and second regions. The first black matrix is ​​located between adjacent filters within the second region. It should be noted that while forming the first black matrix, a second black matrix can be formed simultaneously within the first region. The second black matrix is ​​located between adjacent filters within the second display area and has openings.

[0148] The cover plate structure, which includes the cover layer and the color filter layer, is bonded to the side of the encapsulation layer away from the substrate by an optical adhesive layer. When the cover plate structure is inverted on the encapsulation layer, the second protrusion in the protrusion structure has a truncated quadrangular structure with an inverted trapezoidal side relative to the substrate.

[0149] As an alternative implementation, the preparation of the cover plate structure in the fourth embodiment will be described below.

[0150] First, prepare the capping layer, including:

[0151] Photoresist is coated onto a glass substrate;

[0152] The photoresist is masked, exposed, and developed to form the photoresist retention area;

[0153] The photoresist retention area and the glass substrate are etched to form a cover plate and a first protrusion. The cross section of the first protrusion in the direction perpendicular to the cover plate is a trapezoid.

[0154] A second photosensitive curing adhesive is applied to the side of the cover plate where the first protrusion is located. The refractive index of the second photosensitive curing adhesive is 1.75 to 1.85. The second photosensitive curing adhesive is masked, exposed, and developed to form the second protrusion. The cross-section of the second protrusion in the direction perpendicular to the cover plate includes two regularly spaced trapezoids.

[0155] Understandably, the glass substrate is etched to form a cover plate and a first protrusion. Relative to the cover plate, the cross section of the first protrusion in the direction perpendicular to the cover plate is a regular trapezoid, that is, the first protrusion has a truncated quadrangular structure with regular trapezoidal sides. Relative to the cover plate, the cross section of the second protrusion in the direction perpendicular to the cover plate includes two inverted trapezoids spaced apart. The second protrusion has a hollow truncated quadrangular structure with inverted trapezoidal sides.

[0156] After the cover layer is formed, a color filter layer is formed. Specifically, this includes forming a first black matrix in a second region of the cover plate, and then forming multiple filters in both the first and second regions. The first black matrix is ​​located between adjacent filters within the second region. It should be noted that while forming the first black matrix, a second black matrix can be formed simultaneously within the first region. The second black matrix is ​​located between adjacent filters within the second display area and has openings.

[0157] The cover plate structure is bonded to the side of the encapsulation layer away from the substrate by an optical adhesive layer. When the cover plate structure is inverted on the encapsulation layer, the first protrusion has a truncated quadrangular structure with an inverted trapezoidal side relative to the substrate; the second protrusion has a hollow truncated quadrangular structure with a regular trapezoidal side relative to the substrate.

[0158] As an alternative implementation, the method for preparing the cover plate structure in the fifth embodiment will be described below.

[0159] First, prepare the capping layer, which specifically includes:

[0160] A first photosensitive curable adhesive is coated on a glass substrate. The refractive index of the first photosensitive curable adhesive is 1.45 to 1.5.

[0161] The first photocurable adhesive is masked, exposed, and developed to form the first protrusion with a raised structure. The cross-section of the first protrusion in the direction perpendicular to the glass substrate is a trapezoid.

[0162] A second photosensitive curable adhesive is coated on the side of the glass substrate where the first protrusion is provided. The refractive index of the second photosensitive curable adhesive is 1.75 to 1.85. The second photosensitive curable adhesive is masked, exposed, and developed to form the second protrusion. The cross-section of the second protrusion in the direction perpendicular to the cover plate includes two regularly spaced trapezoids.

[0163] It is understandable that, as a cover plate, the first protrusion has a cross-section that is trapezoidal in the direction perpendicular to the cover plate, and the first protrusion has a truncated quadrangular structure with a trapezoidal side. Relative to the cover plate, the second protrusion has a cross-section that includes two inverted trapezoids spaced apart in the direction perpendicular to the cover plate, and the second protrusion has a truncated quadrangular structure with an inverted trapezoidal side.

[0164] After the cover layer is formed, a color filter layer is formed. Specifically, this includes forming a first black matrix in a second region of the cover plate, and then forming multiple filters in both the first and second regions. The first black matrix is ​​located between adjacent filters within the second region. It should be noted that while forming the first black matrix, a second black matrix can be formed simultaneously within the first region. The second black matrix is ​​located between adjacent filters within the second display area and has openings.

[0165] The cover plate structure is bonded to the side of the encapsulation layer away from the substrate by an optical adhesive layer. When the cover plate structure is inverted on the encapsulation layer, the first protrusion has a truncated quadrangular structure with an inverted trapezoidal side relative to the substrate; the second protrusion has a truncated quadrangular structure with a regular trapezoidal side relative to the substrate.

[0166] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0167] This invention uses terms such as "first," "second," etc., to describe various types of information, but these terms should not be limited to. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information.

[0168] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0169] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A display panel, characterized by, include: A substrate and a light-emitting structure layer, an encapsulation layer, a color filter layer and a cover plate are sequentially stacked on the substrate. The substrate includes a first display area and a second display area other than the first display area. The light transmittance of the first display area is greater than that of the second display area. The color filter layer includes a plurality of filters located in the first display area and the second display area, the plurality of filters including a first filter, a second filter and a third filter of different colors; A plurality of protruding structures are provided between the color filter layer and the cover plate. The plurality of protruding structures are arranged one-to-one with the filters of at least one color in the first display area in a first direction. Each of the protruding structures includes at least one protrusion. The protrusion in the protruding structure has an inclined surface that is in close contact with the filter corresponding to the protruding structure. Each of the protruding structures and its corresponding filter constitutes a light adjustment structure for deflecting incident light at the inclined surface away from the center of the filter in the light adjustment structure. Wherein, the first direction is the direction perpendicular to the substrate.

2. The display panel according to claim 1, characterized in that, The light-emitting structure layer includes an anode layer, a light-emitting layer and a cathode layer stacked sequentially. The anode layer is closer to the substrate than the cathode layer. The anode layer includes multiple anodes, and the multiple anodes are arranged in a one-to-one correspondence with the multiple filters in the first direction. Within the first display area, the orthographic projection of the anode corresponding to the filter in the light adjustment structure in the first direction covers the orthographic projection of the light adjustment structure in the first direction.

3. The display panel according to claim 2, characterized in that, Within the first display area, the orthographic projection of the anode corresponding to the filter in the light adjustment structure in the first direction coincides with the orthographic projection of the light adjustment structure in the first direction.

4. The display panel according to any one of claims 1-3, characterized in that, The protrusion structure includes a first protrusion, the first protrusion having an inverted trapezoidal cross-section in the first direction; a filter corresponding to the protrusion structure covers the first protrusion.

5. The display panel according to claim 4, characterized in that, The refractive index of the filter corresponding to the protruding structure is greater than the refractive index of the protruding structure.

6. The display panel according to any one of claims 1-3, characterized in that, The protruding structure includes a second protrusion, the cross-section of which in the first direction comprises two spaced-apart trapezoids, and the cross-section of the filter corresponding to the protruding structure in the first direction is an inverted trapezoid. The protruding structure surrounds and is adjacent to the outer side of its corresponding filter.

7. The display panel according to claim 6, characterized in that, The refractive index of the filter corresponding to the protruding structure is less than the refractive index of the protruding structure.

8. The display panel according to any one of claims 1-3, characterized in that, The protrusion structure includes a first protrusion and a second protrusion. The first protrusion has an inverted trapezoidal cross section in the first direction, and the second protrusion has two regularly spaced trapezoids in the first direction. The second protrusion surrounds the first protrusion and is spaced apart. The filter corresponding to the protrusion structure covers the first protrusion and at least covers the surface of the second protrusion facing the first protrusion.

9. The display panel according to claim 8, characterized in that, The refractive index of the filter corresponding to the protrusion structure is greater than that of the first protrusion and less than that of the second protrusion.

10. The display panel according to any one of claims 1-3, characterized in that, The protruding structure is integrally formed with the cover plate or formed separately.

11. The display panel according to claim 10, characterized in that, The height of the protruding structure is 1μm to 3μm, and the angle between the inclined surface and the cover plate is 40° to 70°.

12. The display panel according to claim 1, characterized in that, The color filter layer further includes a first black matrix, which is located between adjacent filters within the second display area; and / or, The color filter layer further includes a second black matrix, which is located between adjacent filters within the first display area. The second black matrix between each pair of adjacent filters within the first display area has an opening.

13. The display panel according to claim 1, characterized in that, It also includes an optical adhesive layer, which is located between the encapsulation layer and the color filter layer.

14. A display device, characterized in that, It includes an under-display camera and a display panel as described in any one of claims 1-13, wherein the under-display camera and a first display area of ​​the substrate in the display panel are correspondingly disposed in a direction perpendicular to the substrate.

15. A method for manufacturing a display panel, characterized in that, include: Prepare a cover layer, the cover layer including a cover plate and a plurality of protrusion structures formed on one side of the cover plate, each of the protrusion structures including at least one protrusion; A color filter layer is formed on one side of the cover layer, the color filter layer being located on the side of the cover plate facing the protruding structure, the color filter layer including a plurality of filters, the plurality of filters including a first filter, a second filter and a third filter of different colors; A substrate is provided, the substrate including a first display area and a second display area other than the first display area, wherein the light transmittance of the first display area is greater than the light transmittance of the second display area; A light-emitting structure layer and an encapsulation layer are sequentially formed on one side of the substrate; A cover plate structure containing the cover layer and the color filter layer is inverted and placed on the side of the encapsulation layer away from the substrate, with the color filter layer closer to the substrate than the cover layer; The plurality of filters are located in the first display area and the second display area. The plurality of protruding structures are arranged one-to-one with filters of at least one color in the first display in a first direction. The protrusions in the protruding structures have inclined surfaces that are in close contact with the filters corresponding to the protruding structures. Each of the protruding structures and its corresponding filter constitutes a light adjustment structure for deflecting incident light at the inclined surface away from the center of the filter in the light adjustment structure. The first direction is perpendicular to the substrate.

16. The method for manufacturing a display panel according to claim 15, characterized in that, The preparation of the cover layer includes: Photoresist is coated onto a glass substrate; The photoresist is masked, exposed, and developed to form a photoresist retention area; The photoresist retention area and the glass substrate are etched to form a cover layer including the protruding structure and the cover plate. The protruding structure includes a first protrusion, and the cross-section of the first protrusion in the direction perpendicular to the cover plate is trapezoidal; or... The preparation of the cover layer includes: A first photosensitive curable adhesive is coated onto a glass substrate; The first photosensitive curable adhesive is masked, exposed, and developed to form the raised structure; The protrusion structure includes a first protrusion, the first protrusion having a trapezoidal cross-section in the direction perpendicular to the glass substrate; or, The preparation of the cover layer includes: A second photosensitive curable adhesive is coated onto a glass substrate; The second photosensitive curable adhesive is masked, exposed, and developed to form the raised structure. The raised structure includes a second protrusion, and the cross-section of the second protrusion in the direction perpendicular to the glass substrate includes two inverted trapezoids spaced apart.

Images