Display panel and electronic equipment

Abstract

The invention provides a display panel and electronic equipment, and relates to the technical field of display. The display panel comprises a substrate, a plurality of pixels located on the substrate and a pixel defining layer arranged among the pixels. The multiple color film layers with different colors are arranged on the light emitting sides of the multiple pixels, the multiple color film layers are stacked in the area corresponding to the pixel defining layer and used for forming a shading structure, and each color film layer in the multiple color film layers corresponds to the pixel with the same color and used for forming a light filtering structure; the optical covering layer is arranged on the side, close to the substrate, of the at least one color film layer, the optical covering layer is provided with a containing part in the area corresponding to the pixels so as to contain the color film layer, and the refractive index of the optical covering layer is lower than that of the color film layer. Through the technical scheme, the display effect of the display screen can be effectively improved.

Description

Technical Field

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

[0002] Organic Light Emitting Display (OLED) caters to modern people's requirements for display technology with its unique advantages such as self-luminescence, rich colors, wide viewing angle and low power consumption, and has become one of the key research directions in the field of display technology. How to optimize the display effect of OLED to improve the overall performance of OLED display is an issue that requires continuous attention. Summary of the invention

[0003] The present application provides a display panel and an electronic device, which can improve the display effect.

[0004] In a first aspect, a display panel is provided, comprising: a substrate, a plurality of pixels located on the substrate and a pixel defining layer arranged between the plurality of pixels; a multilayer color film layer of different colors arranged on the light-emitting side of the plurality of pixels, the multilayer color film layer being stacked and arranged in an area corresponding to the pixel defining layer to form a shading structure, and each color film layer in the multilayer color film layer is arranged corresponding to a pixel of the same color to form a light filtering structure; an optical covering layer being arranged on a side of at least one color film layer close to the substrate, the optical covering layer being provided with an accommodating portion in an area corresponding to the pixel to accommodate the color film layer, and the refractive index of the optical covering layer being lower than the refractive index of the color film layer.

[0005] Through the technical solution of the embodiment of the present application, a multi-layer color film layer of different colors is set on the light-emitting side of multiple pixels in the display panel. The multi-layer color film layer is stacked on each other in the area corresponding to the pixel definition layer in the display panel (i.e., the non-light-emitting area of ​​the display panel) to form a light-shielding structure, and forms a filter structure in the area corresponding to the pixel (i.e., the light-emitting area of ​​the display panel), thereby realizing a color filter (Color Film on Encapsulation, COE) structure in the display panel, thereby effectively improving the light transmittance and display effect of the display panel, and helping to reduce the power consumption of the display panel. Furthermore, an optical cover layer is also set on the light-emitting side of the display panel, and the low-refractive-index optical cover layer and the high-refractive-index multi-layer color film layer can further realize an efficiency enhanced structure (EES), thereby further improving the light transmittance and display effect of the display panel. Furthermore, when the embodiment of the present application realizes the COE and EES (i.e., EIC) structure in the display panel, there is no need to set up a black matrix (BM) layer separately. The shading structure formed by stacking multiple color film layers in the area corresponding to the pixel defining layer is equivalent to the BM layer. Therefore, the technical solution of the embodiment of the present application can reduce the BM layer, that is, reduce the BM mask, while ensuring the display effect of the display panel, it can improve the production efficiency and reduce the manufacturing cost.

[0006] In some possible implementations, the accommodation portion includes a through hole, the through hole is located in a first area of ​​the optical cover layer, the orthographic projection of the first area on the substrate overlaps with the orthographic projection of the pixel on the substrate, and the color filter layer is accommodated in the through hole.

[0007] In this embodiment, it is advantageous to utilize the thickness space of the optical cover layer to accommodate the multi-layer color film layer, thereby increasing the thickness of the multi-layer color film layer to improve the display effect of the display panel. In addition, the color film layer with a high refractive index is accommodated in the through hole of the optical cover layer with a low refractive index to form a prism structure, which can optimize the light output of multiple pixels in the display panel, and is conducive to enabling light to be efficiently and evenly emitted from the entire display area of ​​the display panel.

[0008] In some possible implementations, a cross section of the through hole in a direction perpendicular to the display panel is a trapezoid, an upper base of the trapezoid faces the display panel, and the upper base of the trapezoid is shorter than a lower base of the trapezoid.

[0009] In this embodiment, the color film layer with a high refractive index can form a prism structure with better performance in the through hole of the optical cover layer with a low refractive index, which is beneficial to expand the light emitting range of each pixel in the display panel and further improve the display effect of the display panel.

[0010] In some possible implementations, the optical cover layer is further provided with a groove, which is located in the second area of ​​the optical cover layer, and the orthographic projection of the second area on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the color film layer is also accommodated in the groove, wherein the depth of the groove is less than the thickness of the optical cover layer.

[0011] By means of this embodiment, a groove is provided in the area of ​​the optical cover layer corresponding to the pixel definition layer, so that the thickness of the optical cover layer in the second area can be reduced, thereby facilitating the filling of the color filter layer and increasing the thickness of the color filter layer. Multiple color filter layers with a certain thickness are stacked and provided in the area corresponding to the pixel definition layer, which can achieve a better light shielding effect to improve the display effect of the display panel.

[0012] In a possible implementation manner, a distance between a boundary of an orthographic projection of the through hole and a boundary of an orthographic projection of the pixel defining layer is greater than or equal to zero.

[0013] In this embodiment, the edges of adjacent through holes and grooves in the optical cover layer can just overlap or a certain distance can be set between the two, and the through holes and grooves do not penetrate each other, or in other words, the through holes and grooves do not overlap in space. Through this embodiment, the setting of the grooves will not affect the shape design of the through holes, and thus will not affect the prism structure formed by the color film layer in the through holes and the optical cover layer, so as to ensure the display effect of the display panel.

[0014] In a possible implementation, the multi-layer color film layers are arranged one-to-one in the multi-layer optical covering layer; or, the multi-layer color film layers are arranged in a layer of optical covering layer; or, the multi-layer color film layers are arranged in the multi-layer optical covering layer, and at least two layers of the multi-layer color film layers are arranged in the same optical covering layer.

[0015] In this implementation, the multi-layer color film layer can be flexibly arranged in at least one optical cover layer to adapt to different application scenarios.

[0016] In a possible implementation, the plurality of pixels include: a first pixel, a second pixel, and a third pixel; the multi-layer color film layer includes a first color film layer, a second color film layer, and a third color film layer; the light-emitting sides of the plurality of pixels are sequentially provided with a first optical cover layer, a first color film layer, a second optical cover layer, a second color film layer, a third optical cover layer, and a third color film layer; a first through hole and a first groove are provided in the first optical cover layer; an orthographic projection of the first through hole on the substrate overlaps with an orthographic projection of the first pixel on the substrate; an orthographic projection of the first groove on the substrate is located within an orthographic projection of the pixel defining layer on the substrate; the first through hole and the first groove are used to accommodate a first pixel having the same color as the first pixel. color filter layer; a second through hole and a second groove are provided in the second optical cover layer, the orthographic projection of the second through hole on the substrate overlaps with the orthographic projection of the second pixel on the substrate, the orthographic projection of the second groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the second through hole and the second groove are used to accommodate the second color filter layer with the same color as the second pixel; a third through hole and a third groove are provided in the third optical cover layer, the orthographic projection of the third through hole on the substrate overlaps with the orthographic projection of the third pixel on the substrate, the orthographic projection of the third groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the third through hole and the third groove are used to accommodate the third color filter layer with the same color as the third pixel.

[0017] In a possible implementation, the display panel includes at least two optical cover layers, one of the at least two optical cover layers is provided with two through holes, the orthographic projections of the two through holes on the substrate overlap with the orthographic projections of two pixels of different colors among a plurality of pixels on the substrate, and the two through holes are used to respectively accommodate two color filter layers with the same color as the two pixels; another of the at least two optical cover layers is provided with a through hole, the orthographic projection of the one through hole on the substrate overlaps with the orthographic projection of another pixel of a plurality of pixels different from the two pixels on the substrate, and the one through hole is used to accommodate another color filter layer with the same color as the other pixel; the one optical cover layer and the other optical cover layer are respectively provided with grooves, the orthographic projections of the grooves on the substrate are located within the orthographic projections of the pixel defining layer on the substrate, two color filter layers are stacked in the groove region of the one optical cover layer, and another color filter layer is provided in the groove region of the other optical cover layer.

[0018] In a possible implementation, the plurality of pixels include: a first pixel, a second pixel and a third pixel, the multi-layer color film layer includes a first color film layer, a second color film layer and a third color film layer; the at least two optical cover layers include a first optical cover layer, a second optical cover layer and a third optical cover layer; the light-emitting sides of the plurality of pixels are sequentially provided with a first optical cover layer, a first color film layer, a second color film layer, a second optical cover layer, a third optical cover layer and a third color film layer, the first optical cover layer is provided with two first through holes corresponding to the first pixel and the second pixel, the two first through holes are used to respectively accommodate the first color film layer and the second color film layer, the third optical cover layer is provided with a third through hole corresponding to the third pixel, and the third through hole is used to accommodate the third color film layer; or,

[0019] A first optical cover layer, a first color filter layer, a second color filter layer, a second optical cover layer, a third color filter layer and a third optical cover layer are sequentially arranged on the light emitting side of the plurality of pixels, the first optical cover layer is provided with two first through holes corresponding to the first pixel and the second pixel, the two first through holes are used to respectively accommodate the first color filter layer and the second color filter layer, the second optical cover layer is provided with a second through hole corresponding to the second pixel, the second through hole is used to accommodate the second color filter layer; or,

[0020] A first optical cover layer, a first color filter layer, a second optical cover layer, a second color filter layer, a third color filter layer and a third optical cover layer are sequentially arranged on the light emitting side of the plurality of pixels, a first through hole corresponding to the first pixel is arranged in the first optical cover layer, the first through hole is used to accommodate the first color filter layer, and two second through holes corresponding to the second pixel and the third pixel are arranged in the second optical cover layer, the two second through holes are used to accommodate the second color filter layer and the third color filter layer respectively; or,

[0021] The light-emitting sides of the multiple pixels are sequentially provided with a first optical cover layer, a first color film layer, a second optical cover layer, a third optical cover layer, a second color film layer and a third color film layer, the first optical cover layer is provided with a first through hole corresponding to the first pixel, and the first through hole is used to accommodate the first color film layer, and the third optical cover layer is provided with two third through holes corresponding to the second pixel and the third pixel, and the two third through holes are used to accommodate the second color film layer and the third color film layer, respectively.

[0022] In a possible implementation, the multi-layer color filter layer includes three color filter layers, and the colors of the three color filter layers include red, green and blue.

[0023] In some possible implementations, the display panel further includes: an encapsulation layer, which is disposed on the light-emitting side of the plurality of pixels; and a multi-layer color film layer is disposed on the encapsulation layer.

[0024] In some possible implementations, the display panel further includes: a protective layer attached to the optical cover layer and / or the color film layer.

[0025] In this embodiment, the protective layer can not only be used to achieve a protective effect, but also play a certain flattening role to facilitate the execution of subsequent processes, which is beneficial to ensuring the display effect and performance of the display panel.

[0026] In some possible implementations, a pixel includes: a pixel electrode and a light-emitting layer, the pixel electrode is used to drive the light-emitting layer to emit light, and the pixel defining layer is arranged between the light-emitting layers of a plurality of pixels.

[0027] In some possible implementations, the display panel also includes a first touch metal layer and a second touch metal layer, the optical cover layer and / or the color film layer is located between the first touch metal layer and the second touch metal layer, and the first touch metal layer and the second touch metal layer are located in areas corresponding to the pixel defining layer.

[0028] Through the technical solution of this implementation, a design in which the touch function is integrated into the interior of the display panel can be realized, which is beneficial to reducing the thickness and frame of the display panel. Moreover, since the traditional touch panel is reduced, this implementation can provide a better display effect.

[0029] In a second aspect, an electronic device is provided, comprising a display panel according to the first aspect or any one embodiment of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a display panel structure with an EIC provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of another display panel structure provided in an embodiment of the present application;

[0034] Figure 5 A configuration method of three color filter layers in a display panel provided in an embodiment of the present application;

[0035] Figure 6 Another arrangement method of three color filter layers in the display panel provided in the embodiment of the present application;

[0036] Figure 7 Another arrangement method of three color filter layers in the display panel provided in the embodiment of the present application;

[0037] Figure 8 Another arrangement method of three color filter layers in the display panel provided in the embodiment of the present application;

[0038] Fig. 9 A schematic diagram of another display panel structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0040] The present application relates to the field of display technology, and more specifically, to a display screen or a display panel. The display panel may be the main light-emitting component in the display screen. In addition to the display panel, the display screen may further include other display-related components such as a display controller. The display screen can be applied to a variety of fields and scenarios. As an example, the display screen can be applied to 3C electronic products of computers, communications, and consumer electronics, including but not limited to televisions, mobile phones, computers, laptops, tablet computers, personal digital assistants (PDAs), car computers, wearable devices, gaming devices, photographing devices, etc. The present application does not limit the specific type of electronic device where the display screen is located.

[0041] It is understood that the specific embodiments described in this application are only used to explain the relevant content, rather than to limit the scope of protection. It should also be noted that, for the convenience of description, only the parts related to this application are shown in the drawings, and the example implementation methods can be implemented in various forms and should not be understood as being limited to the implementation methods described herein. The same reference numerals in the figures represent the same or similar structures, and their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of this application and are not necessarily drawn to scale.

[0042] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The terms "one", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second" and "third" are used only as labels and are not intended to limit the number of their objects.

[0043] In some embodiments of the present application, the OLED display screen can use the COE technology on the package to improve the display brightness, power consumption and lifespan. In addition, in order to improve the display effect of the OLED, an EES can be set in the OLED display screen, or it can also be called a light enhancement structure. The structural design of setting COE and EES in the display screen at the same time can be called EIC. The EIC structure can further improve the display effect and power consumption of the display screen, and has a good application prospect.

[0044] Figure 1 A schematic diagram of the structure of a display panel with an EIC provided in an embodiment of the present application is shown.

[0045] like Figure 1 As shown, the display panel 100 may include: a display stack 110, a color filter layer 120 and a light enhancement layer 130. The display stack 110 includes: a pixel layer 111, and the pixel layer 111 includes: a plurality of pixels and a pixel definition layer located between the plurality of pixels. Optionally, the pixel may include a pixel circuit and a light emitting device, and the pixel circuit is used to control the light emitting device to emit light. A filter structure may be further provided on the surface of the light emitting device to control the light emitting color of the pixel. As an example, Figure 1 The filter structures shown in the figure can be red (Red, R), green (Green, G) and blue (Blue, B) respectively. The pixels corresponding to the red filter structure can be called R pixels, the pixels corresponding to the green filter structure can be called G pixels, and the pixels corresponding to the blue filter structure can be called B pixels.

[0046] In the display stack 110, an encapsulation layer 112 is further disposed above the pixel layer 111, and a color filter layer 120 can be prepared on the surface of the encapsulation layer 112 to form a COE structure. In the regions corresponding to the multiple pixels, color filters corresponding to the colors are respectively disposed. Specifically, taking the pixel luminous colors of R, G, and B in the display stack 110 as an example, an R color filter is disposed above the R pixel, a G color filter is disposed above the G pixel, and a B color filter is disposed above the B pixel. Multiple color filters can constitute the color filter layer 120.

[0047] Furthermore, a light enhancement layer 130 may be formed on the surface of the COE, and the light enhancement layer 130 includes a first refractive layer 131 and a second refractive layer 132, wherein the first refractive layer 131 is a low refractive index material layer (EOC), and the second refractive layer 132 is a high refractive index material layer (HOC). The first refractive layer is arranged in the area above the corresponding pixel defining layer, and the second refractive layer 132 covers other areas. The structure formed by the high refractive index material layer and the low refractive index material layer constitutes the EES technology. The EES technology forms an enhanced lens structure by forming a high refractive index layer and a low refractive index layer, which can increase the light transmission efficiency of the display panel and reduce the interface reflection loss, thereby improving the display brightness and display effect of the display panel.

[0048] In the above Figure 1 In the illustrated embodiment, BM122 is arranged between the multiple color filters of the color filter layer. The BM is arranged above the corresponding pixel defining layer to reduce the light interference between adjacent pixels and ensure the display effect of the display panel. The implementation of BM requires the setting of a BM mask, that is, a BM mask needs to be set separately for the BM in the photolithography process. Not only is the process flow complicated, but it also requires a higher manufacturing cost.

[0049] In view of this, the present application provides a display panel structure, which can reduce the BM layer, that is, reduce the BM mask, while combining the EIC structure, and can improve production efficiency and reduce manufacturing costs while ensuring the display effect of the display panel.

[0050] Figure 2 A schematic diagram of another display panel structure provided in an embodiment of the present application is shown.

[0051] like Figure 2 As shown, the display panel 200 includes: a display stack 210, a multi-layer color filter layer of different colors (as an example, three layers of color filter layers 221, 222 and 223 are illustrated in the figure) and an optical cover layer (as an example, three layers of optical cover layers 231, 232 and 233 are illustrated in the figure). The display stack 210 includes: a substrate 201, a plurality of pixels located on the substrate 201 (as an example, a first pixel 211, a second pixel 212 and a third pixel 213 with different colors are illustrated in the figure) and a pixel defining layer 214 arranged between the plurality of pixels. The multi-layer color filter layer of different colors is arranged on the light-emitting side of the display stack 210, and the multi-layer color filter layer is stacked in the area corresponding to the pixel defining layer 214 to form a light-shielding structure, and each color filter layer in the multi-layer color filter layer is arranged corresponding to a pixel of the same color to form a light filtering structure. The optical cover layer is arranged on a side of at least one color filter layer close to the substrate 201 . The optical cover layer is provided with a receiving portion in an area corresponding to a pixel to receive multiple color filter layers. The refractive index of the optical cover layer is lower than that of the multiple color filter layers.

[0052] In the display panel 200, a pixel may include a pixel electrode and a light emitting layer, and the control electrode is used to drive the light emitting layer to emit light. For example, when the light emitting layer in a pixel is used to emit a red light signal, the pixel may be called a red pixel. Similarly, when the light emitting layer in a pixel is used to emit a green light signal or a blue light signal, the pixel may be called a green pixel or a blue pixel. As an example, Figure 1The first pixel 211, the second pixel 212, and the third pixel 213 shown in the figure may be a red (R) pixel, a green (G) pixel, and a blue (B) pixel, respectively. In some alternative embodiments, the display panel 200 may be provided with pixels of other colors, such as white, yellow, cyan, magenta, etc., according to actual needs. The embodiment of the present application does not limit the colors of the pixels in the display panel 200.

[0053] In order to define the light-emitting area of ​​each pixel, a pixel definition layer (Pixel Define Layer, PDL) 214 is disposed between the multiple pixels to separate the multiple pixels. The pixel definition layer 214 can be, for example, a black material to achieve a better separation effect between the multiple pixels. Figure 2 As shown, the pixel defining layer 214 may be disposed between the light emitting layers of the plurality of pixels. The region where the pixel defining layer 214 is located may also be referred to as the non-light emitting region of the display panel 200. The region where the plurality of pixels are located may also be referred to as the light emitting region of the display panel 200.

[0054] In order to improve the display effect of the display panel 200, the light-emitting sides of the plurality of pixels are further provided with a multi-layer color filter layer of different colors. Figure 2 The display panel 200 shown includes pixels of three colors, and color filter layers 221, 222 and 223 of three colors are arranged on the display panel 200. Each color filter layer is arranged corresponding to a pixel of the same color, that is, each pixel can be arranged corresponding to a color filter layer of the same color, and no color filter layer of other colors is arranged. In the embodiment of the present application, each color filter layer is arranged corresponding to a pixel of the same color, which may mean that each color filter layer is arranged on the light path of the pixel of the same color. Optionally, each color filter layer may be arranged directly above a pixel of the same color, and not directly above a pixel of other colors.

[0055] In addition, the multi-layer color filter layer can be stacked in the area corresponding to the pixel definition layer 214. The stacked multi-layer color filter layer can absorb light signals of multiple colors, thereby playing a certain light shielding role. As an example, in the case where the multi-layer color filter layer includes: three layers of R, G, and B color filters, the stacking of the three layers of R, G, and B color filters can form a light shielding effect similar to BM. Optionally, the multi-layer color filter layer can be stacked directly above the pixel definition layer 214.

[0056] In the embodiment of the present application, multi-layer color film layers of different colors are arranged on the light-emitting side of multiple pixels to form a COE structure, thereby effectively improving the transmittance and display effect of the display panel and helping to reduce the power consumption of the display panel.

[0057] Furthermore, the light-emitting side of the plurality of pixels may be further provided with an optical covering (OC) layer, and the OC layer may be provided with a receiving portion in the region corresponding to the plurality of pixels to accommodate the multi-layer color filter layer. Optionally, the receiving portion may be, for example, a through hole or a groove with a bottom, and the groove may also be referred to as a blind hole. Optionally, as Figure 2 As shown, the multi-layer color filter layer can be accommodated in the accommodation part of the OC layer in the area corresponding to the plurality of pixels, and the multi-layer color filter layer can be arranged on the surface of the OC layer in the area corresponding to the pixel defining layer.

[0058] The refractive index of the OC layer may be lower than that of the color filter layer. Optionally, the OC layer may be a low refractive index material (e.g., a refractive index between 1.4 and 1.5, e.g., a refractive index of 1.47), and the color filter layer may be a high refractive index material (e.g., a refractive index between 1.65 and 1.75, e.g., a refractive index of 1.7). Therefore, the OC layer and the multi-layer color filter layer may form an EES structure, thereby further increasing the light transmission efficiency of the display panel, which is beneficial to improving the display brightness and display effect, or reducing the power consumption of the display panel.

[0059] Through the technical solution of the embodiment of the present application, a multi-layer color film layer of different colors is arranged on the light-emitting side of the display panel. The multi-layer color film layer is stacked on each other in the area corresponding to the pixel defining layer in the display panel (i.e., the non-light-emitting area of ​​the display panel) to form a light-shielding structure, and forms a filter structure in the area corresponding to the pixel (i.e., the light-emitting area of ​​the display panel), thereby realizing a COE structure in the display panel, thereby effectively improving the light transmittance and display effect of the display panel, and helping to reduce the power consumption of the display panel. Furthermore, an optical cover layer is also arranged on the light-emitting side of the display panel, and the low-refractive-index optical cover layer and the high-refractive-index multi-layer color film layer can further realize an EES structure, thereby further improving the light transmittance and display effect of the display panel.

[0060] Furthermore, the embodiment of the present application realizes the COE and EES (i.e., EIC) structure in the display panel without the need to set up a BM layer separately. The shading structure formed by stacking multiple color film layers in the area corresponding to the pixel defining layer is equivalent to the BM layer. Therefore, the technical solution of the embodiment of the present application can reduce the BM layer, that is, reduce the BM mask, while ensuring the display effect of the display panel, it can improve the production capacity efficiency and reduce the manufacturing cost.

[0061] Optionally, in some embodiments, the accommodation portion in the optical cover layer may be a through hole. In other words, the optical cover layer is provided with a through hole in the first region corresponding to the pixel, and the multi-layer color film layer is accommodated in the through hole. Optionally, the through hole is located in the first region of the optical cover layer, and the orthographic projection of the first region on the substrate overlaps with the orthographic projection of the pixel on the substrate. Optionally, the orthographic projection of the first region on the substrate may completely overlap or partially overlap with the orthographic projection of the pixel on the substrate. In the following embodiments, the overlap between two orthographic projections may include: complete overlap or partial overlap.

[0062] In this embodiment, it is advantageous to utilize the thickness space of the optical cover layer to accommodate the multi-layer color film layer, thereby increasing the thickness of the multi-layer color film layer to improve the display effect of the display panel. In addition, the color film layer with a high refractive index is accommodated in the through hole of the optical cover layer with a low refractive index to form a prism structure, which can optimize the light output of multiple pixels in the display panel, and is conducive to enabling light to be efficiently and evenly emitted from the entire display area of ​​the display panel.

[0063] Optionally, a cross section of the through hole in a direction perpendicular to the display panel is a trapezoid, an upper base of the trapezoid faces the display panel, and the upper base of the trapezoid is shorter than a lower base of the trapezoid.

[0064] Figure 3 A schematic structural diagram of another display panel provided in an embodiment of the present application is shown.

[0065] like Figure 3 As shown, the display panel 300 includes: a display stack 310, and the display stack 310 may include: a first pixel 311, a second pixel 312, and a third pixel 313 (as an example, the three pixels in the figure are R, G, and B pixels, respectively). A pixel defining layer 314 is arranged between the three pixels. Three optical cover layers are arranged above the display stack 310 to accommodate three color film layers respectively. Among them, the first color film layer 321 corresponds to the first pixel 311, and the first color film layer 321 can be accommodated in the first optical cover layer 331. Similarly, the second color film layer 322 corresponds to the second pixel 312, and the second color film layer 322 can be accommodated in the second optical cover layer 332. The third color film layer 323 corresponds to the third pixel 313, and the third color film layer 323 can be accommodated in the third optical cover layer 333.

[0066] exist Figure 3 In the example shown, through holes 334 corresponding to three pixels are formed in each of the three optical cover layers. Optionally, the cross section of the through hole in a direction perpendicular to the display panel 300 is an inverted trapezoid as shown in the figure.

[0067] In this embodiment, the color film layer with a high refractive index can form a prism structure with better performance in the through hole of the optical cover layer with a low refractive index, which is beneficial to expand the light emitting range of each pixel in the display panel and further improve the display effect of the display panel.

[0068] In one implementation, in addition to the through holes in the first area corresponding to the plurality of pixels, the optical cover layer is provided with a groove in the second area corresponding to the pixel definition layer, and the multi-layer color film layer is also accommodated in the groove, and the depth of the groove may be less than the thickness of the optical cover layer. Optionally, the groove is located in the second area of ​​the optical cover layer, and the orthographic projection of the second area on the substrate is located within the orthographic projection of the pixel definition layer on the substrate.

[0069] exist Figure 3 In the example shown, each of the three optical cover layers has a groove 335 formed in the second region corresponding to the pixel definition layer. In addition to the through hole 334 provided in the optical cover layer, each of the three color filter layers also has a groove 335 provided in the optical cover layer.

[0070] By providing a groove in the second area of ​​the optical cover layer corresponding to the pixel definition layer, the thickness of the optical cover layer in the second area can be reduced, thereby facilitating the filling of the color filter layer and increasing the thickness of the color filter layer. Multiple color filter layers with a certain thickness are stacked and arranged in the area corresponding to the pixel definition layer, which can achieve a better light shielding effect to improve the display effect of the display panel.

[0071] In one implementation, the grooves and through holes in the optical cover layer can be prepared simultaneously through a process. For example, a half-tone mask (HTM) is used in the photolithography process, so that grooves and through holes with height differences are prepared in the optical cover layer. The photolithography process using HTM can also be referred to as a half-engraving process or an HTM half-engraving process. Through the technical solution of this implementation, the process of the display panel can be reduced, the manufacturing speed and efficiency can be improved, and it is conducive to reducing the manufacturing cost.

[0072] In one implementation, the minimum distance between the first area and the second area in the optical cover layer may be greater than or equal to zero. In other words, the distance between the boundary of the orthographic projection of the through hole and the boundary of the orthographic projection of the groove is greater than or equal to 0. In this embodiment, the edges of the adjacent through holes and grooves in the optical cover layer may just overlap or a certain distance may be set between the two. The through holes and grooves do not penetrate each other, or in other words, the through holes and grooves do not overlap in space. Through this embodiment, the setting of the groove will not affect the shape design of the through hole, and thus will not affect the prism structure formed by the color film layer in the through hole and the optical cover layer, so as to ensure the display effect of the display panel.

[0073] Continue to see Figure 3 As shown, optionally, in an embodiment of the present application, a pixel in the display panel 300 may include: a pixel electrode and a light-emitting layer. Figure 3 Taking the first pixel 311 as an example, the first pixel 311 may include: a first pixel electrode 3111, a second pixel electrode 3112 and a first light-emitting layer 3113, and the first light-emitting layer 3113 may emit red light, for example. The first pixel electrode 3111 and the second pixel electrode 3112 may be a cathode and an anode, respectively. Optionally, as an example, Figure 3 The cathodes of the plurality of pixels may be integrally arranged to form a common cathode (CTD) structure, while the anodes of the plurality of pixels may be independently arranged. The pixel defining layer 314 may be arranged between the light emitting layers of the plurality of pixels.

[0074] Optionally, a plurality of pixels of the display panel 300 may be disposed on a substrate 315 , and the substrate 315 may include: a substrate and one or more dielectric layers for forming a pixel circuit, and the dielectric layer may include: a planarization layer (PLN) and the like.

[0075] Optionally, the display panel 300 may further include: an encapsulation layer 317, which may be disposed on the light-emitting side of the plurality of pixels to encapsulate and protect the plurality of pixels. Figure 3 In the example shown, the encapsulation layer 317 can be attached to the cathodes of multiple pixels. The encapsulation layer 317 can be, for example, a thin film encapsulation layer (Thin-Film Encapsulation, TFE). The color filter layer and the optical cover layer in the above embodiment can be attached to the encapsulation layer 317 to form a COE structure and an EES structure.

[0076] Continue to see Figure 3 As shown, optionally, the display panel 300 may further include: a protective layer 340, attached to the above-mentioned optical cover layer and / or color film layer. In some examples, the protective layer 340 is attached to the outermost color film layer farthest from the display panel 300 in the multi-layer color film layer, and / or, attached to the outermost optical cover layer farthest from the display panel 300 in the multi-layer optical cover layer. The protective layer 340 may be called COC, which can not only be used to achieve a protective effect, but also play a certain flattening role, so as to facilitate the execution of subsequent processes, which is conducive to ensuring the display effect and performance of the display panel 300.

[0077] In some embodiments, the display panel 300 can realize a touch function in addition to a display function. Optionally, the display panel 300 may further include: a first touch metal layer and a second touch metal layer, an insulating layer is disposed between the first touch metal layer and the second touch metal layer, the insulating layer may include at least one optical cover layer and / or at least one color film layer, and the first touch metal layer and the second touch metal layer are located in the area corresponding to the pixel definition layer, for realizing the touch function. As an example, Figure 3 As shown, the display panel 300 may include a first touch metal layer 351 and a second touch metal layer 352. The first touch metal layer 351 and the second touch metal layer 352 may be disposed on the surfaces of two color filter layers, respectively, and covered by two optical cover layers. The insulating layer between the first touch metal layer 351 and the second touch metal layer 352 may include a second color filter layer 322 and a second optical cover layer 332.

[0078] Optionally, the insulating layer between the first touch metal layer 351 and the second touch metal layer 352 may include: any one of the three color filter layers 321, 322, 323 and the three optical cover layers 331, 332 and 333 or any adjacent multiple layers. Optionally, the first touch metal layer 351 and the second touch metal layer 352 may form a pattern, which is distributed on the surface of the color filter layer or the optical cover layer. The specific shape and arrangement of the first touch metal layer 351 and the second touch metal layer 352 are not limited in the embodiment of the present application. Optionally, the first touch metal layer 351 and the second touch metal layer 352 may be a touch metal layer A (Touch Metal A, TMA) and a touch metal layer B (Touch Metal B, TMB), respectively, wherein TMA is a bridge layer for bridging different touch units, and TMB is used to transmit and receive touch signals, that is, to form a transmission line (TX) and a receiving line (RX) of the touch unit.

[0079] Through the technical solution of this embodiment, the design of integrating the touch function into the display panel can be realized, which is conducive to reducing the thickness and frame of the display panel, and because the traditional touch panel is reduced, this embodiment can provide a better display effect. In some embodiments, the display panel 300 of the embodiment of the present application can be applied to Flexible Multi-Layer On Cell (FMLOC) technology or other types of embedded touch technology.

[0080] In the above Figure 2 and Figure 3In the illustrated embodiment, a display panel is described as including: pixels of three colors, three optical covering layers and three color film layers. The three color film layers are arranged in the three optical covering layers in a one-to-one correspondence, and the three optical covering layers and the three color film layers are stacked in sequence.

[0081] Specifically, the plurality of pixels include: a first pixel, a second pixel and a third pixel, and the multi-layer color film layer includes a first color film layer, a second color film layer and a third color film layer; the light-emitting sides of the plurality of pixels are sequentially provided with a first optical cover layer, a first color film layer, a second optical cover layer, a second color film layer, a third optical cover layer and a third color film layer. A first through hole and a first groove are provided in the first optical cover layer, the orthographic projection of the first through hole on the substrate overlaps with the orthographic projection of the first pixel on the substrate, the orthographic projection of the first groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the first through hole and the first groove are used to accommodate the first color film layer of the same color as the first pixel. A second through hole and a second groove are provided in the second optical cover layer, the orthographic projection of the second through hole on the substrate overlaps with the orthographic projection of the second pixel on the substrate, the orthographic projection of the second groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the second through hole and the second groove are used to accommodate the second color film layer of the same color as the second pixel. A third through hole and a third groove are arranged in the third optical covering layer, the orthographic projection of the third through hole on the substrate overlaps with the orthographic projection of the third pixel on the substrate, the orthographic projection of the third groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the third through hole and the third groove are used to accommodate a third color filter layer with the same color as the third pixel.

[0082] In some applications, FMLOC has three layers of OC, OC0 (the first layer of OC close to the display panel, e.g. Figure 3 The first optical cover layer 331 shown in the figure may be an R color film, and OC0 is used as a color film prism of R. The color film is a high refractive index material, and OC is a low refractive index material to achieve a COE and EES superposition design. In the non-luminous area, OC0 is half-engraved HTM design to reduce the film thickness of the area, and R color film filling is performed. Then, OC1 (the second layer of OC, for example) is performed after the TMA pattern film layer. Figure 3 The second optical cover layer 332 shown in FIG. 1 is also designed with HTM for OC1, the luminous area is designed with prism, and the non-luminous area is designed with thinning. The next process is G color film, and G color film is also filled in the non-luminous area. Then, after the TMB process, the OC2 film layer design (the third layer OC, for example Figure 3The third optical covering layer 333 shown in the figure also serves as the prism of the B pixel and the thinning design of the non-luminous area. The B color film is filled above the non-luminous area, so that the color films in the non-luminous area are stacked from bottom to top in the order of R / G / B, so that the non-luminous area does not need a BM design, thereby achieving the effect of light absorption and shading, and realizing an EIC design without BM.

[0083] In the above embodiment, the R color filter is arranged corresponding to the OC0 film layer, the G color filter can be arranged corresponding to the OC1 film layer, and the B color filter can be arranged corresponding to the OC2 film layer. In the non-luminous area, the color filter and the OC film layer are superimposed in the following manner: OC0→R color filter→OC1→G color filter→OC2→B color filter. Alternatively, in the case where the R color filter is arranged corresponding to the OC0 film layer, the B color filter can be arranged corresponding to the OC1 film layer, and the G color filter can be arranged corresponding to the OC2 film layer. In the non-luminous area, the color filter and the OC film layer are superimposed in the following manner: OC0→R color filter→OC1→B color filter→OC2→G color filter.

[0084] Alternatively, the G color filter is set corresponding to the OC0 film layer, the B color filter can be set corresponding to the OC1 film layer, and the R color filter can be set corresponding to the OC2 film layer. In the non-luminous area, the color filter and the OC film layer are superimposed in the following manner: OC0→G color filter→OC1→B color filter→OC2→R color filter. Alternatively, when the G color filter is set corresponding to the OC0 film layer, the R color filter can be set corresponding to the OC1 film layer, and the B color filter can be set corresponding to the OC2 film layer. In the non-luminous area, the color filter and the OC film layer are superimposed in the following manner: OC0→G color filter→OC1→R color filter→OC2→B color filter.

[0085] Alternatively, the B color filter is set corresponding to the OC0 film layer, the G color filter can be set corresponding to the OC1 film layer, and the R color filter can be set corresponding to the OC2 film layer. In the non-luminous area, the color filter and the OC film layer are superimposed in the following manner: OC0→B color filter→OC1→G color filter→OC2→R color filter. Alternatively, when the B color filter is set corresponding to the OC0 film layer, the R color filter can be set corresponding to the OC1 film layer, and the G color filter can be set corresponding to the OC2 film layer. In the non-luminous area, the color filter and the OC film layer are superimposed in the following manner: OC0→B color filter→OC1→R color filter→OC2→G color filter.

[0086] In the above embodiment, the three color filter layers are arranged in three optical cover layers in a one-to-one correspondence. In some other embodiments, the three color filter layers can also be arranged in two optical cover layers, and the other optical cover layer is not provided with a color filter layer.

[0087] Optionally, the display panel includes at least two optical cover layers, one of the at least two optical cover layers is provided with two through holes, the orthographic projections of the two through holes on the substrate overlap with the orthographic projections of two pixels of different colors among the multiple pixels on the substrate, and the two through holes are used to respectively accommodate two color filter layers of the same color as the two pixels; another optical cover layer of the at least two optical cover layers is provided with a through hole, the orthographic projection of the one through hole on the substrate overlaps with the orthographic projection of another pixel of the multiple pixels that has a color different from the two pixels on the substrate, and the one through hole is used to accommodate another color filter layer of the same color as the other pixel.

[0088] The above-mentioned one optical cover layer and the other optical cover layer are respectively provided with a groove, the orthographic projection of the groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, the groove area of ​​the one optical cover layer is stacked with two color filter layers, and the groove area of ​​the other optical cover layer is provided with another color filter layer. The groove area may include the inner area of ​​the groove and the area directly above the groove.

[0089] Figure 4 A schematic diagram of another display panel structure provided in an embodiment of the present application is shown.

[0090] like Figure 4 As shown, the display panel 400 includes: a display stack 410, and the display stack 410 may include: a first pixel 411, a second pixel 412, and a third pixel 413. A pixel defining layer 414 is arranged between the three pixels. Two optical cover layers are arranged above the display stack 410 to accommodate three color filter layers respectively. The first color filter layer 421, the second color filter layer 422, and the third color filter layer 423 may correspond to the first pixel 411, the second pixel 412, and the third pixel 413, respectively.

[0091] As an example, Figure 4 4 shows that the first color filter layer 421 and the second color filter layer 422 are respectively accommodated in the through holes of the first optical cover layer 431, and the third color filter layer 423 is accommodated in the through holes of the third optical cover layer 433. Optionally, the display panel 400 may further include a second optical cover layer 432, which is located between the first optical cover layer 431 and the third optical cover layer 433. As an example, the three pixels shown in the figure are B, G, and R pixels, respectively. Therefore, corresponding to the pixels of the three colors, the first color filter layer 421, the second color filter layer 422, and the third color filter layer 423 may be B color filter, G color filter, and R color filter, respectively.

[0092] In the embodiment of the present application, through holes corresponding to two pixels may be formed in the first optical cover layer 431 to accommodate two color filter layers. The first optical cover layer 431 may also be formed with a groove in the area corresponding to the pixel defining layer 414, and the groove may be used to accommodate one color filter layer, and another color filter layer may be attached on top of the color filter layer to achieve a stacked arrangement.

[0093] exist Figure 4 In the embodiment shown, both the B color filter and the G color filter are accommodated in OC0 (i.e. Figure 4 The through hole of the first optical cover layer 431 in the B color film and the G color film has no OC film layer between them, and the R color film is arranged on the OC1 ( Figure 4 The second optical cover layer 432 in the embodiment of the present invention is placed above the optical cover layer 432 and accommodated in OC2 (i.e. Figure 4 The process flow of this embodiment is OC0→B color film→G color film→OC1→OC2→R color film.

[0094] Optionally, in some alternative embodiments, such as Figure 5 As shown, the B color film and the G color film are both accommodated in OC0 (i.e. Figure 5 The through hole of the first optical cover layer 431 in the B color film and the G color film has no OC film layer between them, and the R color film is arranged on the OC1 ( Figure 5 In the through hole of the second optical cover layer 432), OC2 (i.e. Figure 5 The third optical cover layer 433 in the embodiment is disposed above the R color film. The process flow of this embodiment is OC0→B color film→G color film→OC1→R color film→OC2.

[0095] Figure 6 Another arrangement of the three color filter layers in the display panel 400 is shown.

[0096] exist Figure 6 In the illustrated embodiment, the first color filter layer 421 and the third color filter layer 423 are respectively accommodated in the through holes of the first optical cover layer 431, and the second color filter layer 422 is accommodated in the through holes of the second optical cover layer 432. Optionally, the display panel 400 may further include a third optical cover layer 433, which is located above the second optical cover layer 432. As an example, the three pixels shown in the figure are B, G, and R pixels, respectively. Therefore, corresponding to the pixels of the three colors, the first color filter layer 421, the second color filter layer 422, and the third color filter layer 423 may be B color filter, G color filter, and R color filter, respectively.

[0097] In this embodiment, the first pixel 411 and the third pixel 413 corresponding to the first color filter layer 421 and the third color filter layer 423 in the same optical cover layer are not arranged adjacently but can be arranged at intervals. The second color filter layer 422 corresponding to the second pixel 412 is arranged in another optical cover layer.

[0098] exist Figure 6 In the embodiment shown, the B color filter and the R color filter are both accommodated in OC0 (ie Figure 6 The through hole of the first optical cover layer 431 in the B color film and the R color film has no OC film layer between them, and the G color film is arranged on the OC1 ( Figure 6 In the through hole of the second optical cover layer 432), OC2 (i.e. Figure 6 The third optical cover layer 433 in the embodiment is disposed above the G color film. The process flow of this embodiment is OC0→B color film→R color film→OC1→G color film→OC2.

[0099] Optionally, in some alternative implementations, the B color film and the R color film are both contained in the through hole of OC0, there is no OC film layer between the B color film and the R color film, and the G color film is arranged above OC1 and contained in the through hole of OC2. The process flow of this embodiment is OC0→B color film→R color film→OC1→OC2→G color film.

[0100] Figure 7 Another arrangement of the three color filter layers in the display panel 400 is shown.

[0101] exist Figure 7 In the illustrated embodiment, the second color filter layer 422 and the third color filter layer 423 are accommodated in the through hole of the second optical cover layer 432, and the first color filter layer 421 is accommodated in the through hole of the first optical cover layer 431. Optionally, the display panel 400 may further include a third optical cover layer 433, which is located above the second optical cover layer 432. As an example, the three pixels shown in the figure are B, G, and R pixels, respectively. Therefore, corresponding to the pixels of the three colors, the first color filter layer 421, the second color filter layer 422, and the third color filter layer 423 may be B color filter, G color filter, and R color filter, respectively.

[0102] In this embodiment, the second color filter layer 422 and the third color filter layer 423 located on the same optical cover layer are not located on the first optical cover layer closest to the display panel 400 , but on the second optical cover layer.

[0103] exist Figure 7 In the embodiment shown, both the G color filter and the R color filter are accommodated in OC1 (i.e. Figure 7 In the through hole of the second optical cover layer 432), there is no OC film layer between the G color film and the R color film, and the B color film is arranged on OC0 ( Figure 7In the through hole of the first optical cover layer 431), OC2 (i.e. Figure 7 The third optical cover layer 433 in the embodiment is arranged above the G color film and the R color film. The process flow of this embodiment is OC0→B color film→OC1→G color film→R color film→OC2.

[0104] Optionally, in some alternative implementations, both the G color film and the R color film are accommodated in the through hole of OC1, there is no OC film layer between the G color film and the R color film, and the B color film is arranged above OC1 and accommodated in the through hole of OC2. The process flow of this embodiment is OC0→OC1→G color film→R color film→OC2→B color film.

[0105] Figure 8 Another arrangement of the three color filter layers in the display panel 400 is shown.

[0106] exist Figure 8 In the illustrated embodiment, the second color filter layer 422 and the third color filter layer 423 are accommodated in the through hole of the third optical cover layer 433, and the first color filter layer 421 is accommodated in the through hole of the first optical cover layer 431. Optionally, the display panel 400 may further include a second optical cover layer 432, which is located between the first optical cover layer 431 and the third optical cover layer 433. As an example, the three pixels shown in the figure are B, G, and R pixels, respectively. Therefore, corresponding to the pixels of the three colors, the first color filter layer 421, the second color filter layer 422, and the third color filter layer 423 may be B color filter, G color filter, and R color filter, respectively.

[0107] In this embodiment, the second color filter layer 422 and the third color filter layer 423 located in the same optical cover layer are located in the third uppermost optical cover layer.

[0108] exist Figure 8 In the embodiment shown, both the G color filter and the R color filter are accommodated in OC2 (i.e. Figure 8 The B color film is accommodated in the through hole of the third optical cover layer 433 in the OC0 ( Figure 8 In the through hole of the first optical cover layer 431), OC1 (i.e. Figure 8 The second optical cover layer 432 in the embodiment is disposed between OC0 and OC1. The process flow of this embodiment is OC0→B color film→OC1→OC2→G color film→R color film.

[0109] Optionally, in some alternative implementations, the G color filter and the R color filter are both accommodated in the through hole of OC2, and the B color filter is accommodated in the through hole of OC1. The process flow of this embodiment is OC0→OC1→B color filter→OC2→G color filter→R color filter.

[0110] Optionally, in the above Figures 4 to 8In the illustrated embodiment, the first color filter layer 421, the second color filter layer 422 and the third color filter layer 423 are respectively B color filter, G color filter and R color filter as an example. In other embodiments, Figures 4 to 8 The first color filter layer 421, the second color filter layer 422 and the third color filter layer 423 in the embodiment shown can also be other color combinations. For example, they can also be any of the following combinations:

[0111] (1) B color film, R color film and G color film;

[0112] (2) G color film, B color film and R color film;

[0113] (3) G color film, R color film and B color film;

[0114] (4) R color film, B color film and G color film;

[0115] (5) R color film, G color film and B color film.

[0116] The embodiment of the present application does not limit the arrangement of the three color filter layers.

[0117] In addition, in the above Figures 4 to 8 In the illustrated embodiment, the display panel 400 may further include an encapsulation layer 417, and the display panel 400 may further include a protective layer 440, a first touch metal layer 451, and a second touch metal layer 452. The relevant technical solutions of the encapsulation layer 417, the protective layer 440, the first touch metal layer 451, and the second touch metal layer 452 may be referred to. Figure 3 The relevant description of the illustrated embodiment will not be repeated here.

[0118] Fig. 9 A schematic diagram of another display panel structure provided in an embodiment of the present application is shown.

[0119] like Fig. 9 As shown, the display panel 500 includes: a display stack 510, and the display stack 510 may include: a first pixel 511, a second pixel 512, and a third pixel 513. A pixel defining layer 514 is provided between the three pixels. The three color filter layers above the display stack 510 are accommodated in the same optical cover layer. The first color filter layer 521, the second color filter layer 522, and the third color filter layer 523 may correspond to the first pixel 511, the second pixel 512, and the third pixel 513, respectively.

[0120] As an example, Fig. 95 shows that the first color filter layer 521, the second color filter layer 522 and the third color filter layer 523 are respectively accommodated in the through holes of the first optical cover layer 531. Optionally, the display panel 500 may further include a second optical cover layer 532 and a third optical cover layer 533, which are located above the first optical cover layer 531 and the three color filter layers. As an example, the three pixels shown in the figure are R, G, and B pixels, respectively. Therefore, corresponding to the pixels of the three colors, the first color filter layer 521, the second color filter layer 522 and the third color filter layer 523 may be R color filter, G color filter and B color filter, respectively.

[0121] In the embodiment of the present application, through holes corresponding to three pixels may be formed in the first optical cover layer 531 to accommodate three color filter layers. The first optical cover layer 531 may also be formed with a groove in the area corresponding to the pixel defining layer 514, and the groove may be used to accommodate one color filter layer, and the other two color filter layers may be attached on top of the color filter layer to achieve a stacked arrangement.

[0122] exist Fig. 9 In the embodiment shown, the R color filter, the G color filter and the B color filter are all accommodated in OC0 (ie Fig. 9 In the first optical cover layer 531), OC1 ( Fig. 9 The second optical cover layer 532) and OC2 ( Fig. 9 The third optical cover layer 533 in the embodiment is located above OC0. The process flow of this embodiment is OC0→R color film→B color film→G color film→OC1→OC2.

[0123] Optionally, in some alternative implementations, the R color filter, the B color filter, and the G color filter may all be contained in OC1 or OC2. In this case, the process flow may be OC0→OC1→R color filter→B color filter→G color filter→OC2, or OC0→OC1→OC2→R color filter→B color filter→G color filter.

[0124] Optionally, in the above Fig. 9 In the illustrated embodiment, taking the first color filter layer 521, the second color filter layer 522 and the third color filter layer 523 as an example, which are R color filter, G color filter and B color filter respectively, in some alternative embodiments, the three color filter layers can also be arranged in any other color combination, which is not limited to the embodiments of the present application.

[0125] In addition, in the above Fig. 9 In the illustrated embodiment, the display panel 500 may further include an encapsulation layer 517, and the display panel 500 may further include a protective layer 540, a first touch metal layer 551, and a second touch metal layer 552. The relevant technical solutions of the encapsulation layer 517, the protective layer 540, the first touch metal layer 551, and the second touch metal layer 552 may be referred to. Figure 3The relevant description of the illustrated embodiment will not be repeated here.

[0126] The present application also provides an electronic device, which may include a display panel of any of the above embodiments. The specific structure and beneficial effects of the display panel can refer to the above embodiments of the display panel, which will not be described in detail here. The electronic device of the present application can be a tablet computer, a laptop computer, a car display, etc., or it can be other electronic devices with display functions such as mobile phones and smart watches, which will not be listed one by one here.

[0127] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of pixels located on the substrate and a pixel defining layer disposed between the plurality of pixels; A plurality of color filter layers of different colors are arranged on the light-emitting sides of the plurality of pixels, the plurality of color filter layers are stacked and arranged in an area corresponding to the pixel defining layer to form a light shielding structure, and each color filter layer in the plurality of color filter layers is arranged corresponding to a pixel of the same color to form a light filtering structure; The optical cover layer is arranged on a side of at least one color filter layer close to the substrate; the optical cover layer is provided with an accommodation portion in an area corresponding to the pixel to accommodate the color filter layer, and the refractive index of the optical cover layer is lower than that of the color filter layer.

2. The display panel according to claim 1, characterized in that: The accommodation portion comprises a through hole, the through hole is located in a first area of ​​the optical cover layer, the orthographic projection of the first area on the substrate overlaps with the orthographic projection of the pixel on the substrate, and the color filter layer is accommodated in the through hole.

3. The display panel according to claim 2, characterized in that: The cross section of the through hole in a direction perpendicular to the display panel is a trapezoid, the upper base of the trapezoid faces the display panel, and the upper base of the trapezoid is shorter than the lower base of the trapezoid.

4. The display panel according to claim 2, characterized in that: The optical cover layer is also provided with a groove, which is located in the second area of ​​the optical cover layer, and the orthographic projection of the second area on the substrate is located within the orthographic projection of the pixel defining layer on the substrate. The color film layer is also accommodated in the groove, and the depth of the groove is less than the thickness of the optical cover layer.

5. The display panel according to claim 4, characterized in that: A distance between a boundary of an orthographic projection of the through hole and a boundary of an orthographic projection of the groove is greater than or equal to zero.

6. The display panel according to any one of claims 1 to 5, characterized in that: The multiple color film layers are arranged in the multiple optical cover layers in a one-to-one correspondence.

7. The display panel according to any one of claims 1 to 5, characterized in that: The plurality of pixels include: a first pixel, a second pixel and a third pixel; the multi-layer color filter layer includes a first color filter layer, a second color filter layer and a third color filter layer; the light-emitting sides of the plurality of pixels are sequentially provided with a first optical cover layer, the first color filter layer, a second optical cover layer, the second color filter layer, a third optical cover layer and the third color filter layer; A first through hole and a first groove are provided in the first optical cover layer, the orthographic projection of the first through hole on the substrate overlaps with the orthographic projection of the first pixel on the substrate, the orthographic projection of the first groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the first through hole and the first groove are used to accommodate the first color filter layer having the same color as the first pixel; A second through hole and a second groove are provided in the second optical cover layer, the orthographic projection of the second through hole on the substrate overlaps with the orthographic projection of the second pixel on the substrate, the orthographic projection of the second groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the second through hole and the second groove are used to accommodate the second color filter layer having the same color as the second pixel; A third through hole and a third groove are provided in the third optical covering layer, the orthographic projection of the third through hole on the substrate overlaps with the orthographic projection of the third pixel on the substrate, the orthographic projection of the third groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, and the third through hole and the third groove are used to accommodate the third color filter layer with the same color as the third pixel.

8. The display panel according to any one of claims 1 to 5, characterized in that: The multi-layer color film layer is arranged in the multi-layer optical cover layer, and at least two layers of the multi-layer color film layer are arranged in the same optical cover layer.

9. The display panel according to any one of claims 1 to 5, characterized in that: The display panel comprises at least two optical cover layers, one of the at least two optical cover layers is provided with two through holes, the orthographic projections of the two through holes on the substrate overlap with the orthographic projections of two pixels of different colors among the plurality of pixels on the substrate, and the two through holes are used to respectively accommodate two color filter layers of the same color as the two pixels; A through hole is provided in another optical cover layer of the at least two optical cover layers, the orthographic projection of the one through hole on the substrate overlaps with the orthographic projection of another pixel of the plurality of pixels having a different color from the two pixels on the substrate, and the one through hole is used to accommodate another color filter layer having the same color as the another pixel; The one optical cover layer and the other optical cover layer are respectively provided with grooves, the orthographic projection of the groove on the substrate is located within the orthographic projection of the pixel defining layer on the substrate, the two color filter layers are stacked in the groove area of ​​the one optical cover layer, and the other color filter layer is provided in the groove area of ​​the other optical cover layer.

10. The display panel according to claim 9, characterized in that: The plurality of pixels include: a first pixel, a second pixel and a third pixel; the multi-layer color filter layer includes a first color filter layer, a second color filter layer and a third color filter layer; the at least two optical cover layers include a first optical cover layer, a second optical cover layer and a third optical cover layer; The light-emitting sides of the plurality of pixels are sequentially provided with the first optical cover layer, the first color filter layer, the second color filter layer, the second optical cover layer, the third optical cover layer and the third color filter layer, the first optical cover layer is provided with two first through holes corresponding to the first pixel and the second pixel, the two first through holes are used to respectively accommodate the first color filter layer and the second color filter layer, the third optical cover layer is provided with a third through hole corresponding to the third pixel, the third through hole is used to accommodate the third color filter layer; or, The light-emitting sides of the plurality of pixels are sequentially provided with the first optical cover layer, the first color filter layer, the second color filter layer, the second optical cover layer, the third color filter layer and the third optical cover layer, the first optical cover layer is provided with two first through holes corresponding to the first pixel and the second pixel, the two first through holes are used to accommodate the first color filter layer and the second color filter layer respectively, the second optical cover layer is provided with a second through hole corresponding to the second pixel, the second through hole is used to accommodate the second color filter layer; or, The light-emitting sides of the plurality of pixels are sequentially provided with the first optical cover layer, the first color filter layer, the second optical cover layer, the second color filter layer, the third color filter layer and the third optical cover layer, the first optical cover layer is provided with a first through hole corresponding to the first pixel, the first through hole is used to accommodate the first color filter layer, the second optical cover layer is provided with two second through holes corresponding to the second pixel and the third pixel, the two second through holes are used to accommodate the second color filter layer and the third color filter layer respectively; or, The light-emitting sides of the multiple pixels are sequentially provided with the first optical cover layer, the first color film layer, the second optical cover layer, the third optical cover layer, the second color film layer and the third color film layer, the first optical cover layer is provided with a first through hole corresponding to the first pixel, and the first through hole is used to accommodate the first color film layer, and the third optical cover layer is provided with two third through holes corresponding to the second pixel and the third pixel, and the two third through holes are used to accommodate the second color film layer and the third color film layer, respectively.

11. The display panel according to any one of claims 1 to 5, characterized in that: The multi-layer color film layer is arranged in a layer of the optical cover layer.

12. The display panel according to any one of claims 1 to 5, characterized in that: The multi-layer color filter layer includes three color filter layers, and the colors of the three color filter layers are red, green and blue respectively.

13. The display panel according to any one of claims 1 to 5, characterized in that: The display panel further includes: an encapsulation layer, which is arranged on the light-emitting side of the plurality of pixels; and the multi-layer color film layer is arranged on the encapsulation layer.

14. The display panel according to any one of claims 1 to 5, characterized in that: Also includes: A protective layer is attached to the optical cover layer and / or the color film layer.

15. The display panel according to any one of claims 1 to 5, characterized in that: The pixel comprises: a pixel electrode and a light-emitting layer, the pixel electrode is used to drive the light-emitting layer to emit light, and the pixel defining layer is arranged between the light-emitting layers of a plurality of pixels.

16. The display panel according to any one of claims 1 to 5, characterized in that: Also includes: A first touch metal layer and a second touch metal layer, the optical cover layer and / or the color film layer are located between the first touch metal layer and the second touch metal layer, and the first touch metal layer and the second touch metal layer are located in an area corresponding to the pixel defining layer.

17. An electronic device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 16.

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