Display panel and display device

Abstract

The present invention proposes a display panel and a display device, wherein the display panel includes a flexible substrate; a pixel layer, the pixel layer includes a red sub-pixel, a green sub-pixel and a blue sub-pixel; a color filter layer, the color filter layer includes a red color filter, a green color filter and a blue color filter arranged at intervals; the blue color filter in the first display area has a first medium in contact with the blue color filter, the blue color filter and the first medium have different refractive indices, and the refractive indices of the blue color filter and the first medium are such that the blue light incident from the light incident side of the display panel is refracted at the interface where the blue color filter and the first medium are in contact, and then irradiates the flexible substrate in a direction away from the blue sub-pixel corresponding to the blue color filter. Thus, the display panel can increase the amount of blue light entering the flexible substrate in the first display area without reducing the normal transmittance of light, thereby improving the imaging effect.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular, to a display panel and a display device. Background Art

[0002] Existing under-screen camera products mostly use polyimide as the material for the flexible substrate. Polyimide absorbs more blue light, causing the light to appear yellow when it passes into the under-screen camera, affecting the white balance when taking pictures and making the image yellow.

[0003] Therefore, current display panels and display devices need to be further improved. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] In one aspect of the present invention, a display panel is provided, the display panel comprising a flexible substrate, the flexible substrate comprising a first display area and a second display area surrounding the first display area; a pixel layer, the pixel layer extending to the first display area and the second display area, the pixel layer comprising a red sub-pixel, a green sub-pixel and a blue sub-pixel; a color filter layer, the color filter layer extending to the first display area and the second display area, the color filter layer comprising a red color filter, a green color filter and a blue color filter arranged at intervals, the red color filter, the green color filter and the blue color filter respectively corresponding to the red sub-pixel, the blue sub-pixel and the green sub-pixel; the blue color filter in the first display area has a first medium in contact with the blue color filter, the blue color filter and the first medium have different refractive indices, and the refractive indices of the blue color filter and the first medium are such that the blue light incident from the light incident side of the display panel is incident on the interface where the blue color filter contacts the first medium, and then irradiates the flexible substrate along a direction away from the blue sub-pixel corresponding to the blue color filter. Therefore, the display panel can increase the amount of blue light entering the flexible substrate in the first display area without reducing the normal transmittance of light, improve the white balance during imaging in the first display area, and improve the imaging effect.

[0006] According to some embodiments of the present invention, the display panel also includes: a thin film encapsulation layer and a first planarization layer, the thin film encapsulation layer is located between the pixel layer and the color film layer, the first planarization layer is located on the side of the thin film encapsulation layer away from the pixel layer, and the thin film encapsulation layer and the first planarization layer both extend to the first display area and the second display area, a first groove penetrating along the thickness direction is formed on the first planarization layer in the first display area corresponding to the blue color film, the interface where the blue color film and the first medium are in contact is located in the first groove, and the refractive index of the first planarization layer is greater than the refractive index of the blue color film.

[0007] According to some embodiments of the present invention, the first planarization layer is the first medium, and the first groove includes: a first opening, the first opening is located on a side of the first groove away from the flexible substrate; a second opening, the second opening is located on a side of the first groove facing the flexible substrate, and the orthographic projection of the second opening on the flexible substrate is located within the orthographic projection range of the first opening on the flexible substrate; a side wall, the side wall is located between the first opening and the second opening; the blue color film extends into the first groove and fills the first groove.

[0008] According to some embodiments of the present invention, the blue sub-pixel includes: an anode and a light-emitting layer, the orthographic projection of the first opening on the flexible substrate is within the range of the orthographic projection of the anode on the flexible substrate; and / or the orthographic projection of the second opening on the flexible substrate is within the range of the orthographic projection of the light-emitting layer on the flexible substrate.

[0009] According to some embodiments of the present invention, the refractive index of the blue color filter is 1.58-1.6, and the refractive index of the first planarization layer is 1.7-1.8; the angle between the side wall and the surface of the first planarization layer facing the flexible substrate is α, and satisfies 40°≤α≤75°.

[0010] According to some embodiments of the present invention, the first medium is located in the first groove, the refractive index of the first medium is less than the refractive index of the blue color film, the first medium includes a first surface, a second surface arranged opposite to each other, and an outer peripheral surface connecting the first surface and the second surface, the first surface is located on a side of the first medium away from the pixel layer, the second surface is located on a side of the first medium close to the pixel layer, the orthographic projection of the first surface on the flexible substrate is within the orthographic projection range of the second surface on the flexible substrate, and the second surface covers an opening of the first groove facing the side of the flexible substrate.

[0011] According to some embodiments of the present invention, the first groove includes a first opening, the first opening is located on a side of the first groove facing away from the flexible substrate; a second opening, the second opening is located on a side of the first groove facing the flexible substrate, the orthographic projection of the second opening on the flexible substrate is located within the orthographic projection range of the first opening on the flexible substrate, and the orthographic projection of the first surface on the flexible substrate is located within the orthographic projection range of the first opening on the flexible substrate; a side wall, the side wall is located between the first opening and the second opening; the blue color film extends into the first groove and covers the first surface and the outer peripheral surface of the first medium.

[0012] According to some embodiments of the present invention, the refractive index of the first medium is 1.45-1.5; the angle between the outer peripheral surface and the second surface is β, and satisfies 40°≤β≤75°.

[0013] According to some embodiments of the present invention, the first medium is located inside the blue color filter, and a refractive index of the first medium is smaller than a refractive index of the blue color filter.

[0014] According to some embodiments of the present invention, the first medium is constructed as a prism, and the refractive index of the prism is 1.45-1.5; the prism also includes a third surface, and the third surface is located on a side of the prism close to the flexible substrate. The angle between the interface where the blue color film contacts the prism and the third surface is γ, and satisfies 40°≤γ≤75°.

[0015] In another aspect of the present application, a display device is provided, the display device comprising the aforementioned display panel. Thus, the display device has all the features and advantages of the aforementioned display panel, which will not be described in detail here. In general, it at least has the advantages of good imaging effect and can avoid yellowing of the image.

[0016] According to some embodiments of the present invention, the display device further includes a camera, and the camera corresponds to the first display area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram showing the structure of a display panel according to an embodiment of the present invention is shown;

[0019] Figure 2 Shows Figure 1 An enlarged view of the first display area;

[0020] Figure 3 Shows Figure 2 The enlarged view of the dashed line area;

[0021] Figure 4 An enlarged view of a first display area of ​​a display panel according to another embodiment of the present invention is shown;

[0022] Figure 5 A schematic diagram showing the structure of a display panel according to another embodiment of the present invention;

[0023] Figure 6 Shows Figure 5 An enlarged view of the first display area in FIG.

[0024] Reference numerals:

[0025] 1000: display panel; 1100: flexible substrate; A: first display area; B: second display area; 1210: red sub-pixel; 1211: red light-emitting layer; 1220: blue sub-pixel; 1221: blue light-emitting layer; 1230: green sub-pixel; 1231: green light-emitting layer; 10: anode: 20: cathode; 1310: red color film; 1320: blue color film; 1330: green color film; 1400: first planarization layer ; 110: first opening; 120: second opening; 130: side wall; 1500: thin film encapsulation layer; 1510: first sublayer; 1520: second sublayer; 1530: third sublayer; 1600: second medium; 1610: first surface; 1620: second surface; 1630: peripheral surface; 1640: third surface; 1700: organic layer; 1800: black matrix; 1900: second planarization layer; 2000: camera. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in this area or the product specifications are used. The reagents or instruments used that do not specify the manufacturer are all conventional products that can be obtained commercially.

[0027] In one aspect of the present application, a display panel 1000 is provided, referring to Figure 1 The display panel 1000 includes a flexible substrate 1100, a pixel layer and a color filter layer.

[0028] The flexible substrate 1100 includes a first display area A and a second display area B surrounding the first display area A, the pixel layer extends to the first display area A and the second display area B, the pixel layer includes a red sub-pixel 1210, a green sub-pixel 1230 and a blue sub-pixel 1220, the color filter layer extends to the first display area A and the second display area B, the color filter layer includes a red color filter 1310, a green color filter 1330 and a blue color filter 1320 arranged at intervals, and the red color filter 1310, the green color filter 1330 and the blue color filter 1320 are respectively In accordance with the red sub-pixel 1210, the blue sub-pixel 1220 and the green sub-pixel 1230, the blue color filter 1320 in the first display area A has a first medium in contact therewith, the blue color filter 1320 and the first medium have different refractive indices, and the refractive indices of the blue color filter 1320 and the first medium make the blue light incident from the light incident side of the display panel 1000 incident on the interface where the blue color filter 1320 contacts the first medium and then irradiates the flexible substrate 1100 in a direction away from the blue sub-pixel 1220 corresponding to the blue color filter 1320. Thus, the display panel 1000 can increase the amount of blue light entering the flexible substrate 1100 in the first display area A without reducing the normal transmittance of light. When the under-screen camera strategy is adopted, the camera corresponds to the first display area A, so that the white balance during imaging in the first display area A can be improved, and the imaging effect can be improved.

[0029] The following is a detailed description of the principle by which the present application can achieve the above beneficial effects:

[0030] Currently, the flexible substrate 1100 is mostly made of polyimide material. Polyimide itself absorbs more blue light. When blue light is irradiated onto the flexible substrate 1100, part of the blue light is absorbed, causing the light passing through the flexible substrate 1100 to turn yellow. Therefore, when the under-screen camera strategy is adopted, since the camera is set below the display screen, the yellowing of the light passing through the flexible substrate will affect the white balance when taking pictures, making the image yellow. In order to solve this problem, the related art adopts the method of increasing the size of the blue color filter 1320. Since the blue sub-pixel 1220 includes the anode 10, the blue light shining on the anode 10 will be blocked and cannot shine on the flexible substrate 1100. By enlarging the size of the blue color filter 1320, that is, the orthographic projection of the blue color filter 1320 on the flexible substrate 1100 is larger than the orthographic projection of the anode 10 in the blue sub-pixel 1220 on the flexible substrate 1100, part of the light passing through the blue color filter 1320 is not blocked by the anode 10 of the blue sub-pixel 1220, and directly shines on the flexible substrate 1100, so as to supplement the blue light and avoid the yellowing of the light passing through the flexible substrate 1100 to a certain extent. However, this method has certain disadvantages, that is, when the size of the blue color filter 1320 is enlarged, the transmittance of normal light will be affected, and additional diffraction will be generated, thereby reducing the imaging effect. The present application proposes a display panel 1000, including a first display area A and a second display area B. The first display area A includes a red sub-pixel 1210, a blue sub-pixel 1220 and a green sub-pixel 1230, and correspondingly, a red color filter 1310, a blue color filter 1320 and a green color filter 1330 are respectively provided. In order to allow as much blue light as possible that passes through the blue color filter 1320 to be irradiated onto a flexible substrate 1100, the blue color filter 1320 in the first display area A has a first medium in contact with the blue color filter 1320. The refractive indexes of the blue color filter 1320 and the first medium are such that the blue light incident from the light incident side of the display panel 1000 is incident on an interface where the blue color filter 1320 contacts the first medium, and then irradiates onto the flexible substrate 1100 in a direction away from the blue sub-pixel 1220 corresponding to the blue color filter 1320. Specifically, when the refractive index of the first medium is greater than that of the blue color filter 1320, the blue light may be refracted when it is irradiated to the interface between the blue color filter 1320 and the first medium, so that part of the blue light changes its optical path and directly irradiates the flexible substrate 1100; when the refractive index of the first medium is less than that of the blue color filter 1320, the blue light may be totally reflected when it is irradiated to the interface between the blue color filter 1320 and the first medium, so that part of the blue light changes its optical path and directly irradiates the flexible substrate 1100. In this way, the blue light absorbed by the flexible substrate 1100 can be supplemented, the amount of blue light entering the flexible substrate 1100 can be increased, the light in the first display area A that passes through the flexible substrate 1100 can be prevented from being yellowed, and the imaging effect can be improved.

[0031] The following describes in detail two cases in which the refractive index of the first medium is greater than the refractive index of the blue color film 1320 and the refractive index of the first medium is less than the refractive index of the blue color film 1320 in the present invention:

[0032] According to some embodiments of the present invention, reference Figure 1 to Figure 3 The display panel 1000 also includes: a thin film encapsulation layer 1500 and a first planarization layer 1400. The thin film encapsulation layer 1500 is located between the pixel layer and the color filter layer. Specifically, the thin film encapsulation layer 1500 may further include a first sublayer 1510, a second sublayer 1520 and a third sublayer 1530. The first sublayer 1510 is located on the side of the entire thin film encapsulation layer 1500 facing the flexible substrate 1100 and may be formed by chemical vapor deposition; the second sublayer 1520 is located on the side of the first sublayer 1510 away from the flexible substrate 1100, and the second sublayer 1520 may be formed by inkjet printing; the third sublayer 1530 is located on the side of the second sublayer 1520 away from the first sublayer 1510, and the third sublayer 1530 may be formed by chemical vapor deposition. The first planarization layer 1400 is located on the side of the thin film encapsulation layer 1500 away from the pixel layer, and both the thin film encapsulation layer 1500 and the first planarization layer 1400 extend to the first display area A and the second display area B. A first groove penetrating along the thickness direction is formed on the first planarization layer 1400 at the position corresponding to the blue color filter 1320 in the first display area A, and the interface between the blue color filter 1320 and the first medium is located in the first groove. The refractive index of the first planarization layer 1400 is greater than the refractive index of the blue color filter 1320. If the first groove is made directly on the third sub-layer 1530, and the third sub-layer 1530 is also made of a material with a refractive index greater than that of the blue color filter 1320, although the manufacturing process and effect can meet the requirements of deflecting blue light to irradiate the flexible substrate 1100, the encapsulation effect of the thin film encapsulation layer 1500 will be weakened to a certain extent. Therefore, a first planarization layer is disposed on the side of the third sublayer 1530 away from the flexible substrate 1100, and the first planarization layer forms a first medium and extends to the first display area A and the second display area B. Thus, the encapsulation effect of the thin film encapsulation layer 1500 is not affected, and the requirements of changing the blue light path and increasing the amount of blue light entering the flexible substrate 1100 can be met.

[0033] According to some embodiments of the present invention, reference Figure 1 to Figure 3, the first planarization layer 1400 is a first medium, the first groove includes: a first opening 110, a second opening 120 and a side wall 130, the first opening 110 is located on the side of the first groove away from the flexible substrate 1100, the second opening 120 is located on the side of the first groove facing the flexible substrate 1100, the orthographic projection of the second opening 120 on the flexible substrate 1100 is located within the orthographic projection range of the first opening 110 on the flexible substrate 1100, the side wall 130 is located between the first opening 110 and the second opening 120, and the blue color filter 1320 extends into the first groove and fills the first groove. That is to say, the side wall 130 of the first groove is a slope, and the opening of the first groove on the side away from the flexible substrate 1100 is larger than the opening of the first groove on the side facing the flexible substrate 1100, when the blue light is irradiated on the slope, refraction can occur, so that the blue light changes the optical path and directly irradiates on the flexible substrate 1100, thereby increasing the amount of blue light entering the flexible substrate 1100. Specifically, a cross section of the first groove along the thickness direction of the display panel 1000 may be an inverted trapezoid.

[0034] It should be noted that the type of material forming the first medium is not particularly limited, as long as the material itself is transparent, can ensure light transmittance, and ensures that the refractive index of the formed first medium is greater than the refractive index of the blue color film 1320.

[0035] According to some embodiments of the present invention, reference Figure 2 , the blue sub-pixel 1220 includes: an anode 10, a blue light-emitting layer 1221, and a cathode 20, the orthographic projection of the first opening 110 on the flexible substrate 1100 is within the range of the orthographic projection of the anode 10 on the flexible substrate 1100; and / or the orthographic projection of the second opening 120 on the flexible substrate 1100 is within the range of the orthographic projection of the blue light-emitting layer 1221 on the flexible substrate 1100. Thus, the orthographic projection of the first opening 110 on the flexible substrate 1100 is within the range of the orthographic projection of the anode 10 on the flexible substrate 1100. Preferably, the orthographic projection position of the first opening 110 on the flexible substrate 1100 is flush with the anode 10, so that the size of the blue color filter 1320 is prevented from exceeding the size of the anode 10, and the blue color filter 1320 is prevented from affecting the transmission of normal light. The orthographic projection of the second opening 120 on the flexible substrate 1100 is within the range of the orthographic projection of the blue light-emitting layer 1221 on the flexible substrate 1100. Preferably, the position of the orthographic projection of the second opening 120 on the flexible substrate 1100 is flush with the opening of the blue light-emitting layer 1221, so that the second opening 120 is prevented from being too large, the size of the blue color filter 1320 is too large, and the transmittance of normal light is reduced.

[0036] It is well known to those skilled in the art that the red sub-pixel 1210 also includes an anode 10, a red light-emitting layer 1211 and a cathode 20, and the green sub-pixel 1230 also includes an anode 10, a green light-emitting layer 1231 and a cathode 20, and the design of the anode 10, the light-emitting layer and the cathode 20 film layers refers to the conventional design in the field and is not specifically described here.

[0037] According to some embodiments of the present invention, the specific refractive index of the blue color filter 1320 and the first planarization layer is not particularly limited, and the size of the slope angle of the side wall 130 can be designed according to the specific refractive index of the blue color filter 1320 and the first planarization layer. Specifically for the present application, the refractive index of the blue color filter 1320 can be 1.58 to 1.6, and the first planarization layer 1400 can be formed by a photoresist with a refractive index of 1.7 to 1.8; the angle between the side wall 130 and the surface of the first planarization layer 1400 facing the flexible substrate 1100 is α, and satisfies 40°≤α≤75°, for example, it can be 45°, 50°, 55°, 60°, 65°, 70°, etc. Thus, the blue light can be refracted on the slope of the side wall 130 and directly irradiated on the flexible substrate 1100, avoiding irradiation on the adjacent red sub-pixel 1210 or green sub-pixel 1230.

[0038] According to some embodiments of the present invention, reference Figure 4 , the first medium is located in the first groove, the refractive index of the first medium is less than the refractive index of the blue color filter 1320, the first medium includes a first surface 1610 and a second surface 1620 arranged opposite to each other, and an outer peripheral surface 1630 connecting the first surface 1610 and the second surface 1620, the first surface 1610 is located on the side of the first medium away from the pixel layer, the second surface 1620 is located on the side of the first medium close to the pixel layer, the orthographic projection of the first surface 1610 on the flexible substrate 1110 is within the orthographic projection range of the second surface 1620 on the flexible substrate 1110, and the second surface 1620 covers the opening of the first groove on the side facing the flexible substrate 1110. That is to say, the outer peripheral surface 1630 is gathered toward the side away from the flexible substrate 1100, so that the outer peripheral surface 1630 forms a slope inclined toward the inner side of the first medium, and when the blue light is irradiated on the outer peripheral surface 1630, total reflection can occur, so that part of the blue light changes the optical path and directly irradiates on the flexible substrate 1100. Specifically, the cross section of the first medium along the thickness direction of the display panel 1000 may be a regular trapezoid. At this time, the blue light irradiated onto the first groove sidewall 130 is irradiated onto the flexible substrate 1100 by refraction, and the blue light irradiated onto the peripheral surface 1630 is irradiated onto the flexible substrate 1100 by total reflection. The two paths increase the incident amount of blue light on the flexible substrate 1100, which can further improve the imaging effect.

[0039] According to some embodiments of the present invention, reference Figure 4When the first medium is located in the first groove, the first groove may also include: a first opening 110, a second opening 120 and a side wall 130, the first opening 110 is located on a side of the first groove away from the flexible substrate 1100, the second opening 120 is located on a side of the first groove facing the flexible substrate 1100, the orthographic projection of the second opening 120 on the flexible substrate 1100 is located within the orthographic projection range of the first opening 110 on the flexible substrate 1100, the side wall 130 is located between the first opening 110 and the second opening 120, and the blue color film 1320 extends into the first groove and covers the first surface 1610 and the outer peripheral surface 1630 of the first medium. That is to say, the side wall 130 of the first groove is a slope, and the opening of the first groove away from the flexible substrate 1100 is larger than the opening of the first groove toward the flexible substrate 1100. When the blue light is irradiated onto the side wall 130, refraction can occur, so that the blue light changes the optical path and directly irradiates onto the flexible substrate 1100, thereby increasing the amount of blue light entering the flexible substrate 1100. Specifically, the cross section of the first groove along the thickness direction of the display panel 1000 can be an inverted trapezoid. When the blue light is irradiated onto the peripheral surface 1630, it is irradiated onto the flexible substrate 1100 through total reflection. The two paths increase the incident amount of blue light on the flexible substrate 1100, which can further improve the imaging effect.

[0040] According to some embodiments of the present invention, when the first medium is located in the first groove, the first medium can also be formed by a photoresist with a refractive index of 1.45 to 1.5. When the refractive index of the blue color filter 1320 is 1.58 to 1.6 and the refractive index of the first medium is 1.45 to 1.5, in order to prevent the blue light from being totally reflected and irradiated onto the adjacent red sub-pixel 1210 or green sub-pixel 1230, the angle between the outer surface 1630 and the second surface 1620 can be β, and satisfy 40°≤β≤75°, for example, it can be 45°, 50°, 55°, 60°, 65°, 70°, etc.

[0041] According to some embodiments of the present invention, reference Figure 5 and Figure 6 , the first medium is located inside the blue color film 1320, and the refractive index of the first medium is less than the refractive index of the blue color film 1320. Specifically, when the display panel 1000 has the thin film encapsulation layer 1500, since the first medium is directly located inside the blue color film 1320, there is no need to further arrange a film layer structure above the thin film encapsulation layer 1500 to form the first medium. When the blue light is irradiated to the interface between the blue color film 1320 and the first medium, full emission can occur, so that the blue light is directly irradiated to the flexible substrate 1100, thereby increasing the incident amount of the blue light on the flexible substrate 1100 and improving the imaging effect.

[0042] According to some embodiments of the present invention, reference Figure 6, the first medium can be constructed as a prism, the prism can be formed of a photoresist material with a refractive index of 1.45 to 1.5, the prism also includes a third surface 1640, the third surface 1640 is located on the side of the prism close to the flexible substrate 1100, and the angle between the interface where the blue color filter 1320 contacts the prism and the third surface 1640 is γ, and satisfies 40°≤γ≤75°. As a result, the blue light can be irradiated to the interface where the blue color filter 1320 contacts the prism and then totally reflected, and directly irradiated onto the flexible substrate 1100, avoiding irradiation onto the adjacent red sub-pixel 1210 or green sub-pixel 1230, thereby increasing the incident amount of blue light on the flexible substrate 1100. It should be noted that the shape of the prism is not particularly limited, for example, the interface of the prism along the thickness direction of the display panel can be a regular trapezoid or a triangle.

[0043] According to some embodiments of the present invention, a black matrix 1800 is further disposed between the red color filter 1310 , the green color filter 1330 , and the blue color filter 1320 in the second display area B to prevent light leakage and color confusion, while also increasing the contrast of the display panel 1000 .

[0044] According to some embodiments of the present invention, reference Figure 1 , Figure 2 , Figures 4 to 6 An organic layer 1700 may be provided between the thin film encapsulation layer 1500 and the substrate 1100 .

[0045] According to some embodiments of the present invention, reference Figure 1 , Figure 2 , Figures 4 to 6 When the first medium is located on one side of the blue color film 1320 or inside the blue color film 1320, the side of the blue color film 1320 away from the flexible substrate may also have a second planarization layer 1900. The second planarization layer 1900 may be formed of a photoresist. The refractive index of the photoresist is not particularly limited and may be formed of a photoresist having the same refractive index as the first medium.

[0046] In another aspect of the present invention, a display device is provided, which includes the aforementioned display panel 1000. Therefore, the display device has all the features and advantages of the aforementioned display panel 1000, which will not be described in detail here. In general, it has at least the advantages of good imaging effect and avoiding yellowing of the image.

[0047] According to some embodiments of the present invention, reference Figure 2The display device also includes a camera 2000. Specifically, the display device can be a full-screen display device. The first display area A is an FDC area (camera area of ​​the full-screen display). The blue light passing through the blue color film 1320 in the first display area A is refracted or totally reflected and irradiated onto the flexible substrate 1100. Then, the blue light passes through the flexible substrate 1100 and enters the under-screen camera 2000, thereby increasing the amount of blue light entering and improving the yellowing phenomenon of the image.

[0048] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A display panel, characterized in that: include: A flexible substrate, wherein the flexible substrate comprises a first display area and a second display area surrounding the first display area; A pixel layer, the pixel layer extending to the first display area and the second display area, the pixel layer comprising a red sub-pixel, a green sub-pixel and a blue sub-pixel; a color filter layer, the color filter layer extending to the first display area and the second display area, the color filter layer comprising a red color filter, a green color filter and a blue color filter arranged at intervals, the red color filter, the green color filter and the blue color filter corresponding to the red sub-pixel, the blue sub-pixel and the green sub-pixel respectively; The blue color film in the first display area has a first medium in contact with the blue color film, the blue color film and the first medium have different refractive indices, and the refractive indices of the blue color film and the first medium are such that blue light incident from the light incident side of the display panel is incident on an interface where the blue color film and the first medium are in contact, and then irradiates the flexible substrate in a direction away from the blue sub-pixel corresponding to the blue color film.

2. The display panel according to claim 1, characterized in that: The display panel also includes: a thin film encapsulation layer and a first planarization layer, the thin film encapsulation layer is located between the pixel layer and the color film layer, the first planarization layer is located on a side of the thin film encapsulation layer away from the pixel layer, and the thin film encapsulation layer and the first planarization layer both extend to the first display area and the second display area, a first groove penetrating along the thickness direction is formed on the first planarization layer in the first display area and corresponding to the blue color film, the interface where the blue color film and the first medium are in contact is located in the first groove, and the refractive index of the first planarization layer is greater than the refractive index of the blue color film.

3. The display panel according to claim 2, characterized in that: The first planarization layer is the first medium; The first groove comprises: a first opening, the first opening is located at a side of the first groove away from the flexible substrate; a second opening, the second opening is located at a side of the first groove facing the flexible substrate, and the orthographic projection of the second opening on the flexible substrate is located within the orthographic projection range of the first opening on the flexible substrate; and a side wall, the side wall is located between the first opening and the second opening; The blue color film extends into the first groove and fills the first groove.

4. The display panel according to claim 3, characterized in that: The blue sub-pixel includes: an anode and a light-emitting layer, the orthographic projection of the first opening on the flexible substrate is within the range of the orthographic projection of the anode on the flexible substrate; and / or the orthographic projection of the second opening on the flexible substrate is within the range of the orthographic projection of the light-emitting layer on the flexible substrate.

5. The display panel according to claim 4, characterized in that: The refractive index of the blue color film is 1.58 to 1.6, and the refractive index of the first planarization layer is 1.7 to 1.8; An angle between the side wall and a surface of the first planarization layer facing the flexible substrate is α, and satisfies 40°≤α≤75°.

6. The display panel according to claim 2, characterized in that: The first medium is located in the first groove, and the refractive index of the first medium is smaller than the refractive index of the blue color film. The first medium includes a first surface and a second surface that are arranged opposite to each other, and an outer peripheral surface connecting the first surface and the second surface, the first surface is located on a side of the first medium away from the pixel layer, the second surface is located on a side of the first medium close to the pixel layer, the orthographic projection of the first surface on the flexible substrate is within the orthographic projection range of the second surface on the flexible substrate, and the second surface covers an opening of the first groove toward a side of the flexible substrate.

7. The display panel according to claim 6, characterized in that: The first groove comprises a first opening, the first opening is located at a side of the first groove facing away from the flexible substrate; a second opening, the second opening is located at a side of the first groove facing the flexible substrate, the orthographic projection of the second opening on the flexible substrate is located within the orthographic projection range of the first opening on the flexible substrate, the orthographic projection of the first surface on the flexible substrate is located within the orthographic projection range of the first opening on the flexible substrate, and a side wall, the side wall is located between the first opening and the second opening; The blue color film extends into the first groove and covers the first surface and the outer peripheral surface of the first medium.

8. The display panel according to claim 7, characterized in that: The refractive index of the first medium is 1.45-1.5; the angle between the outer peripheral surface and the second surface is β, and satisfies 40°≤β≤75°.

9. The display panel according to claim 1, characterized in that: The first medium is located in the blue color filter, and the refractive index of the first medium is smaller than the refractive index of the blue color filter.

10. The display panel according to claim 9, characterized in that: The first medium is configured as a prism, and the refractive index of the prism is 1.45 to 1.5; The prism also includes a third surface, which is located on a side of the prism close to the flexible substrate. The angle between the interface where the blue color film contacts the prism and the third surface is γ, and satisfies 40°≤γ≤75°.

11. A display device, characterized in that: A display panel comprising any one of claims 1 to 10.

12. The display device according to claim 11, characterized in that: It also includes a camera, and the camera corresponds to the first display area.

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