Display panel and display apparatus

Abstract

A display panel. The display panel comprises first covering portions, wherein each first covering portion is provided on the side of a first touch unit distant from a base substrate; insulation of the first touch units can be achieved by means of the first covering portions; a color resist opening is formed between every two adjacent first covering portions; light filter units are provided in different color resist openings, respectively; the light filter units cover the side surfaces of the first covering portions; and the refractive index of the light filter units is greater than the refractive index of the first covering potions, so that light emitted at the oblique viewing angle of light-emitting units undergoes total reflection at the interface between the side surfaces of the first covering portions and the light filter units, so as to redirect the light emitted at the oblique viewing angle to be emitted toward the front viewing angle, thereby improving the light emitting efficiency of the display panel at the front viewing angle. Therefore, there is no need to separately provide a light path regulation and control layer, reducing the thickness of the display panel and facilitating lightening and thinning of the display panel. The present invention further provides a display apparatus comprising the display panel.

Description

Display panel and display device

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to Chinese Patent Application No. 202410480817.7, filed on April 19, 2024, entitled “Display panel and display device”, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0004] The FMLOC (Flexible Multi-Layer On Cell) design is currently mainstream in the field of OLED touch display. The FMLOC design refers to manufacturing a metal electrode layer on the packaging layer of the display substrate, and the surface of the metal electrode layer significantly reflects ambient light.

[0005] In order to reduce ambient light reflection and improve contrast, a color film layer and / or a light path regulation layer is arranged on the side of the light-emitting layer away from the driving backboard, resulting in a large thickness of the display panel, which is not conducive to the thinning of the display panel.

[0006] It should be noted that the information disclosed in the above background section of the application is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] The present application aims to overcome the shortcomings of the prior art, and provides a display panel and a display device.

[0008] According to an aspect of the present application, a display panel is provided, which comprises a driving backplane, a pixel defining layer, a plurality of pixel electrodes, a plurality of light emitting units of different colors, a common electrode, a first touch electrode layer, a first cover layer, a filter layer and a light shielding layer. The pixel defining layer is arranged on one side of the driving backplane and comprises a plurality of pixel defining portions. The pixel defining portions are arranged close to each other, and a pixel opening is formed between the pixel defining portions. The plurality of pixel electrodes are arranged in the pixel openings, respectively. The plurality of light emitting units of different colors are arranged on the side of the pixel electrodes away from the driving backplane. The common electrode is arranged on the side of the plurality of light emitting units away from the driving backplane. The first touch electrode layer is arranged on the side of the common electrode away from the driving backplane, and comprises a plurality of first touch units. The plurality of first touch units are arranged at intervals. The first cover layer comprises a plurality of first cover portions. The first cover portions are arranged on the side of the first touch units away from the driving backplane, and a color resistance opening is formed between the first cover portions arranged close to each other. The slope angle of the side surface of the first cover portion is less than 90 degrees. The filter layer comprises a plurality of filter units of different colors. The filter units are arranged in the color resistance openings, respectively. The filter units cover the side surface of the first cover portion. The normal projection of the filter unit on the driving backplane covers the normal projection of the light emitting unit on the driving backplane. The refractive index of the filter unit is greater than the refractive index of the first cover portion. The light shielding layer comprises a plurality of light shielding units. The light shielding units are arranged between the first touch units and the first cover portions or on the side of the first cover portions away from the driving backplane. The light shielding units cover the normal projection of the first touch unit on the driving backplane. The light shielding units are arranged close to each other, and a light transmission opening is formed between the light shielding units. The normal projection of the color resistance opening on the driving backplane is located in the normal projection of the light transmission opening on the driving backplane.

[0009] In an embodiment of the present application, the filter unit extends from the side surface of the first cover portion to the side of the first cover portion away from the driving backplane.

[0010] In an embodiment of the present application, when the light shielding unit is arranged between the first touch unit and the first cover portion, the side surface of the first cover portion comprises a first inclined surface, a flat surface and a second inclined surface. The slope angle of the first inclined surface is 30-50 degrees. The flat surface is arranged at the end of the first inclined surface away from the driving backplane, and the flat surface is parallel to the surface of the driving backplane. The second inclined surface is arranged at the end of the flat surface away from the first inclined surface, and the slope angle of the second inclined surface is 45-75 degrees.

[0011] In an embodiment of the present application, the display panel further comprises a passivation layer. The passivation layer is arranged on the side of the first touch electrode layer away from the driving backplane, and the passivation layer covers the plurality of first touch units.

[0012] In an embodiment of the present application, when the light shielding unit is arranged on the side of the first cover portion away from the driving backplane, the side surface of the first cover portion is an inclined surface, and the slope angle of the side surface of the first cover layer is 55-85 degrees.

[0013] In one embodiment of the present application, the light filtering unit is arranged on the side of the first covering part away from the driving backboard, and the orthographic projection of the light filtering unit on the driving backboard is within the orthographic projection of the light transmitting opening on the driving backboard.

[0014] In one embodiment of the present application, the distance between the edge of the light shielding unit and the edge of the light filtering unit is 1-3 μm, and the distance between the light filtering units of different colors and the adjacent light shielding units is equal.

[0015] In one embodiment of the present application, the greater the refractive index of the light filtering unit, the greater the distance between the edge of the side of the light filtering unit close to the driving backboard and the edge of the side of the light emitting unit close to the driving backboard.

[0016] In one embodiment of the present application, the light emitting units of different colors include red light emitting units, green light emitting units and blue light emitting units, the light filtering units of different colors include red light filtering units, green light filtering units and blue light filtering units, the orthographic projection of the red light filtering unit on the driving backboard covers the orthographic projection of the red light emitting unit on the driving backboard, the orthographic projection of the green light filtering unit on the driving backboard covers the orthographic projection of the green light emitting unit on the driving backboard, and the orthographic projection of the blue light filtering unit on the driving backboard covers the orthographic projection of the blue light emitting unit on the driving backboard.

[0017] In one embodiment of the present application, the distance between the edge of the side of the red light filtering unit close to the driving backboard and the edge of the side of the red light emitting unit close to the driving backboard is the first outward expansion distance, the distance between the edge of the side of the green light filtering unit close to the driving backboard and the edge of the side of the green light emitting unit close to the driving backboard is the second outward expansion distance, the distance between the edge of the side of the blue light filtering unit close to the driving backboard and the edge of the side of the blue light emitting unit close to the driving backboard is the third outward expansion distance, the refractive index of the red light filtering unit is 1.65-1.85, the refractive index of the green light filtering unit and the refractive index of the blue light filtering unit are 1.55-1.7, the first outward expansion distance is 1-3 μm, the second outward expansion distance is 0-2 μm, and the ratio of the third outward expansion distance is 0-2 μm.

[0018] In one embodiment of the present application, the orthographic projection of the light filtering unit on the driving backboard covers the orthographic projection of the light transmitting opening on the driving backboard.

[0019] In one embodiment of the present application, two adjacent light filtering units are connected to each other, the light shielding unit is arranged on the side of the light filtering unit away from the driving backboard and located at the connection of the two light filtering units, and the orthographic projection of the light shielding unit on the driving backboard and the orthographic projection of the light filtering units of different colors on the driving backboard are overlapped respectively.

[0020] In one embodiment of the present application, the light shielding unit is arranged on the side of the first cover portion away from the driving back plate, and the light filtering unit extends to the side of the light shielding unit away from the driving back plate, and two light filtering units of different colors are arranged at intervals.

[0021] In one embodiment of the present application, the first cover portion comprises first, second and third cover units arranged at intervals, the first cover unit is arranged between the second and third cover units, the slope angle of the side surface of the first, second and third cover units is less than 90 degrees, the first cover unit covers the first touch control unit, the light shielding unit covers the first cover unit, the groove formed between the second cover unit and the first cover unit, and the groove formed between the third cover unit and the first cover unit, and two light filtering units of different colors cover the sides of the second and third cover units away from the driving back plate, respectively.

[0022] In one embodiment of the present application, the first cover portion comprises first, second and third cover units arranged at intervals, the first cover unit is arranged between the second and third cover units, the slope angle of the side surface of the first, second and third cover units is less than 90 degrees, the first cover unit covers the first touch control unit, two light filtering units of different colors cover the second cover unit, the groove formed between the second cover unit and the first cover unit, the third cover unit and the groove formed between the third cover unit and the first cover unit, respectively, and the light shielding unit covers the first cover unit and the light filtering units of different colors in the different grooves.

[0023] In one embodiment of the present application, the side of the first cover portion close to each other is provided with a protrusion.

[0024] In one embodiment of the present application, the protrusion extends from the side of the first cover portion close to the driving back plate to the side away from the driving back plate, and the height of the protrusion is always equal in the extension direction of the side surface of the first cover portion.

[0025] In one embodiment of the present application, a plurality of protrusions are distributed along the edge of the color resist opening.

[0026] In one embodiment of the present application, the overhanging distance between the edge of the side of the first cover portion close to the driving back plate and the edge of the side of the pixel defining portion close to the driving back plate is 0.5-2 μm.

[0027] In one embodiment of the present application, the distance between the edge of the light shielding unit and the edge of the side of the first cover portion away from the driving back plate is 1-3 μm.

[0028] In one embodiment of the present application, the extending distance between the edge of the light filtering unit close to the side of the driving backplane and the edge of the light filtering unit away from the side of the driving backplane is 0-2 μm.

[0029] In one embodiment of the present application, the display panel further comprises a second cover layer, which is arranged on the side of the light filtering layer away from the driving backplane.

[0030] In one embodiment of the present application, the display panel further comprises an encapsulation layer, which is arranged between the first touch electrode layer and the common electrode.

[0031] According to another aspect of the present application, there is provided a display device comprising the display panel provided by one aspect of the present application.

[0032] It should be understood that the general description above and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0034] FIG. 1 is a cross-sectional schematic view of a display panel according to an embodiment of the present application, in which a color film layer is arranged on the light emitting side of the light emitting layer.

[0035] FIG. 2 is a cross-sectional schematic view of a display panel according to an embodiment of the present application, in which a light path regulating layer is arranged on the light emitting side of the light emitting layer.

[0036] FIG. 3 is a cross-sectional schematic view of a display panel according to an embodiment of the present application, in which a color film layer and a light path regulating layer are arranged on the light emitting side of the light emitting layer in sequence.

[0037] FIG. 4 is a cross-sectional schematic view of a display panel according to an embodiment of the present application, in which the light shielding unit is arranged between the passivation layer and the first cover part.

[0038] FIG. 5 is another cross-sectional schematic view of a display panel according to an embodiment of the present application, in which the light shielding unit is arranged between the passivation layer and the first cover part.

[0039] FIG. 6 is a cross-sectional schematic view of a display panel according to an embodiment of the present application, in which the light shielding unit is arranged on the side of the first cover part away from the driving backplane, and the light shielding unit is arranged apart from the light filtering unit.

[0040] FIG. 7 is a cross-sectional view of a display panel according to an embodiment of the present application, when the distance between the edge of the light filtering unit close to the one side of the driving backplane and the edge of the light emitting unit close to the one side of the driving backplane is different.

[0041] FIG. 8 is a cross-sectional view of a display panel according to an embodiment of the present application, when the light shielding unit is arranged on the side of the light filtering unit away from the driving backplane, and is located at the connection of two light filtering units.

[0042] FIG. 9 is a cross-sectional view of a display panel according to an embodiment of the present application, when the light shielding unit is arranged on the side of the first covering unit away from the driving backplane, and the light filtering unit extends to the side of the light shielding unit away from the driving backplane.

[0043] FIG. 10 is a cross-sectional view of a display panel according to an embodiment of the present application, when the light shielding unit covers the first covering unit, the recess formed between the first covering unit and the second covering unit, and the recess formed between the first covering unit and the third covering unit, and two light filtering units of different colors cover the side of the second covering unit and the third covering unit away from the driving backplane respectively.

[0044] FIG. 11 is a cross-sectional view of a display panel according to an embodiment of the present application, when the light shielding unit covers the first covering unit and the light filtering units of different colors in different recesses.

[0045] FIG. 12 is a plan view of a pixel defining layer according to an embodiment of the present application, when the orthographic projection of the light transmission opening on the driving backplane is located within the orthographic projection of the light filtering unit on the driving backplane.

[0046] FIG. 13 is a plan view of a light shielding layer according to an embodiment of the present application, when the orthographic projection of the light transmission opening on the driving backplane is located within the orthographic projection of the light filtering unit on the driving backplane.

[0047] FIG. 14 is a plan view of a first covering layer according to an embodiment of the present application, when the orthographic projection of the light transmission opening on the driving backplane is located within the orthographic projection of the light filtering unit on the driving backplane.

[0048] FIG. 15 is a plan view of a light filtering layer according to an embodiment of the present application, when the orthographic projection of the light transmission opening on the driving backplane is located within the orthographic projection of the light filtering unit on the driving backplane.

[0049] FIG. 16 is a plan view of a display panel according to an embodiment of the present application, when the orthographic projection of the light transmission opening on the driving backplane is located within the orthographic projection of the light filtering unit on the driving backplane.

[0050] FIG. 17 is a plan view of a light filtering layer according to embodiments of the present application, when the orthographic projection of the light filtering unit on the drive backplane is within the orthographic projection of the light transmitting opening on the drive backplane.

[0051] FIG. 18 is a plan view of the stacked layers of a display panel according to embodiments of the present application, when the orthographic projection of the light filtering unit on the drive backplane is within the orthographic projection of the light transmitting opening on the drive backplane.

[0052] FIG. 19 is a plan view of a light filtering layer according to embodiments of the present application, when two adjacent light filtering units extend to connect to each other, and the light blocking unit is disposed on the side of the light filtering unit away from the drive backplane.

[0053] FIG. 20 is a plan view of the stacked layers of a display panel according to embodiments of the present application, when two adjacent light filtering units extend to connect to each other, and the light blocking unit is disposed on the side of the light filtering unit away from the drive backplane.

[0054] FIG. 21 is a plan view of a first cover layer according to embodiments of the present application, when the edge of the orthographic projection of the light transmitting opening on the drive backplane is between the orthographic projection of the first cover unit on the drive backplane and the orthographic projection of the second cover unit on the drive backplane.

[0055] FIG. 22 is a plan view of the stacked layers of a display panel according to embodiments of the present application, when the edge of the orthographic projection of the light transmitting opening on the drive backplane is between the orthographic projection of the first cover unit on the drive backplane and the orthographic projection of the second cover unit on the drive backplane.

[0056] Explanation of reference numerals: 10 - driving backplane, 11 - substrate, 12 - buffer layer; 13 - driving circuit layer, 131 - active layer, 1321 - first gate insulating layer, 1322 - second gate insulating layer, 1331 - first gate, 1332 - second gate, 134 - interlayer dielectric layer, 135 - first source, 136 - drain, 137 - protective layer, 138 - second source; 139 - planarization layer group, 1391 - first planarization layer, 1392 - second planarization layer; 15 - pixel definition layer, 151 - pixel opening; 16 - light emitting layer, 161 - pixel electrode, 162 - light emitting unit, 1621 - red light emitting unit, 1622 - green light emitting unit, 1623 - blue light emitting unit, 163 - common electrode; 17 - encapsulation layer, 171 - first inorganic encapsulation layer, 172 - organic encapsulation layer, 173 - second inorganic encapsulation layer; 18 - touch control layer, 181 - first touch electrode layer, 1811 - first touch unit, 182 - passivation layer, 183 - second touch electrode layer, 184 - touch insulating layer; 19 - color filter layer, 191 - light shielding layer, 1911 - light shielding unit, 1912 - light transmission opening, 192 - first cover layer, 1921 - first cover part, 1922 - color resistance opening, 1923 - first inclined surface, 1924 - flat surface, 1925 - second inclined surface, 1926 - first cover unit, 1927 - second cover unit, 1928 - third cover unit, 1929 - protrusion, 193 - light filtering unit, 1931 - red light filtering unit, 1932 - green light filtering unit, 1933 - blue light filtering unit; 20 - second cover layer, 21 - light path regulation layer, 211 - low refractive index part, 212 - high refractive index layer. DETAILED DESCRIPTION

[0057] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and description of these elements will not be repeated. In addition, the drawings are only schematic and are not necessarily drawn to scale.

[0058] Although relative terms are used in this description, such as "upper," "lower," to describe one component's relationship to another component, these terms are used herein for convenience only and are not intended to be limiting. It is to be understood that, when a part is referred to as being "on" or "under" another part, it can be directly on or under the other part, or intervening parts can be present. It is to be understood that other terms such as "on" and "under" can be interpreted in the context of the description.

[0059] The terms "one," "a," "an," "the" and "at least one" are used to mean one or more than one, i.e., any quantity of the stated component(s) / element(s) / etc.; the terms "comprising," "having," "including," and "containing" are used to mean including but not limited to, etc.; the term "consisting essentially of" means including the stated component(s) / element(s) / etc. and any other component(s) / element(s) / etc. that do not materially affect the essential characteristics of the composition / product, etc., and the term "consisting of means including the stated component(s) / element(s) / etc. and no other component(s) / element(s) / etc. The terms "first," "second," and "third," etc. are used only as labels, and do not imply any particular ordering of the named components.

[0060] FMLOC (Flexible Multi-Layer On Cell) design is currently mainstream in the field of OLED touch display. The FMLOC design refers to manufacturing a metal electrode layer on the packaging layer of the display substrate, and the surface of the metal electrode layer significantly reflects ambient light. In order to improve the contrast of the display panel and reduce reflected light, a polarizing plate is usually arranged on the light-emitting side of the light-emitting layer to make the display panel appear black when it is not bright. However, the polarizing plate will cause the light intensity of the display panel to attenuate.

[0061] As shown in FIG. 1, in order to reduce ambient light reflection and improve contrast, a color film layer 19 is arranged on the side of the light-emitting layer 16 away from the driving backplane 10 to replace the polarizing plate. The color film layer 19 is still arranged on the side of the packaging layer 17 away from the driving backplane 10. The color film layer 19 includes a black matrix and a filter unit 193. Most of the ambient light will be absorbed through the black matrix, and the light emitted by the light-emitting unit 162 will directly exit from the filter unit 193, thereby improving the light-emitting efficiency of the display panel. Compared with the display panel using a polarizing plate to prevent glare, the power consumption of the display panel of FIG. 1 is reduced by 25-30%, but the reflectivity is increased by 0.8-1%.

[0062] As shown in FIG. 2, to reduce ambient light reflection and improve contrast, a light path regulation layer 21 is arranged on the side of the light-emitting layer 16 away from the substrate 11 instead of a polarizer, the light path regulation layer 21 includes a plurality of low refractive index portions 211 and a high refractive index layer 212, the refractive index of the low refractive index portions 211 is less than the refractive index of the high refractive index layer 212, the plurality of low refractive index portions 211 are arranged at intervals on the side of the encapsulation layer 17 away from the substrate 11, and the high refractive index layer 212 covers the side of the low refractive index portions 211 away from the substrate 11 and the gaps between adjacent low refractive index portions 211. The emergent light of the light-emitting unit 162 is totally reflected at the interface between the high refractive index layer 212 and the low refractive index portions 211 and then emerges, thereby improving the light-emitting efficiency of the display panel. The power consumption of the display panel in the figure is 5-10% lower than that of a display panel with a polarizer for anti-glare, but the internal stress of the high refractive index layer 212 is large, and Growing Dark Spot at HIAA (GDSH) is prone to occur in the gaps between adjacent low refractive index portions 211.

[0063] As shown in FIG. 3, the color filter layer 19 and the light path regulation layer 21 can be arranged in sequence on the side of the encapsulation layer 17 away from the substrate 11, thereby improving the light-emitting efficiency of the display panel. The power consumption of the display panel in the figure is 37% lower than that of a display panel with a polarizer for anti-glare, but the reflectivity is 0.6% higher than that of a display panel in the figure with only the color filter layer 19.

[0064] Since the color filter layer 19 and / or the light path regulation layer 21 are arranged on the side of the light-emitting layer 16 away from the substrate 11, the thickness of the display panel is large, which is not conducive to the thinning of the display panel. In addition, one or two more mask processes are required in the process of forming the color filter layer 19 and / or the light path regulation layer 21, so two more mask plates are required, resulting in a large loss of production capacity of the display panel.

[0065] Based on this, the display panel is provided. As shown in FIGS. 4-22, the display panel includes a driving backplate 10, a pixel defining layer 15, a plurality of pixel electrodes 161, a plurality of light emitting units 162 of different colors, a common electrode 163, a first touch electrode layer, a first cover layer 192, a filter layer, and a light shielding layer 191. The pixel defining layer 15 is arranged on one side of the driving backplate 10. The pixel defining layer 15 includes a plurality of pixel defining portions. The pixel defining portions are arranged on the side close to each other to form a pixel opening 151. The plurality of pixel electrodes 161 are arranged in the different pixel openings 151, respectively. The plurality of light emitting units 162 of different colors are arranged on the side away from the driving backplate 10 of each pixel electrode 161. The common electrode 163 is arranged on the side away from the driving backplate 10 of the plurality of light emitting units 162. The first touch electrode layer is arranged on the side away from the driving backplate 10 of the common electrode 163. The first touch electrode layer includes a plurality of first touch units 1811. The plurality of first touch units 1811 are arranged at intervals. The first cover layer 192 includes a plurality of first cover portions 1921. The first cover portions 1921 are arranged on the side away from the substrate 11 of the first touch units 1811. The first cover portions 1921 are arranged on the side close to each other to form a color resistance opening 1922. The slope angle of the side surface of the first cover portion 1921 is less than 90 degrees. The filter layer includes filter units 193 of different colors. The filter units 193 are arranged in the different color resistance openings 1922, respectively. The filter units 193 cover the side surface of the first cover portion 1921. The orthographic projection of the filter units 193 on the substrate 11 covers the orthographic projection of the light emitting units 162 on the substrate 11. The refractive index of the filter units 193 is greater than the refractive index of the first cover portion 1921. The light shielding layer 191 includes a plurality of light shielding units 1911. The light shielding units 1911 are arranged between the first touch units 1811 and the first cover portions 1921 or on the side away from the substrate 11 of the first cover portions 1921. The light shielding units 1911 cover the orthographic projection of the first touch units 1811 on the substrate 11. The light shielding units 1911 are arranged on the side close to each other to form a light transmission opening 1912. The orthographic projection of the color resistance opening 1922 on the substrate 11 is located in the orthographic projection of the light transmission opening 1912 on the substrate 11.

[0066] The first covering portion 1921 is arranged on the side of the first touch unit 1811 away from the substrate 11, and the insulation of the first touch unit 1811 can be realized through the first covering portion 1921. The color resistance opening 1922 is formed between two adjacent first covering portions 1921. The light filtering unit 193 is arranged in different color resistance openings 1922. The light filtering unit 193 covers the side surface of the first covering portion 1921. The refractive index of the light filtering unit 193 is greater than that of the first covering portion 1921. Therefore, the emergent light of the oblique viewing angle of the light emitting unit 162 can be totally reflected on the interface between the side surface of the first covering portion 1921 and the light filtering unit 193, and the emergent light of the oblique viewing angle is deflected to the direction of the normal viewing angle, thereby improving the light extraction efficiency of the display panel in the normal viewing angle. Therefore, the light path regulating layer does not need to be arranged separately, the thickness of the display panel is reduced, and the thinning of the display panel is facilitated.

[0067] The display panel related to the embodiments of the present application will be described in detail below in combination with specific examples.

[0068] As shown in FIG. 4, the display panel can generally include a substrate 11, a driving circuit layer 13, and the driving circuit layer 13 is arranged on one side of the substrate 11. The display panel can further include a buffer layer 12, and the buffer layer 12 is arranged between the substrate 11 and the driving circuit layer 13.

[0069] The substrate 11 can be an inorganic material substrate 11 or an organic material substrate 11. For example, in an embodiment of the present application, the material of the substrate 11 can be a glass material such as soda-lime glass, quartz glass, sapphire glass, or a metal material such as stainless steel, aluminum, nickel, etc.

[0070] In another embodiment of the present application, the substrate 11 can also be a flexible substrate 11, for example, the material of the substrate 11 can be polyimide (PI). The substrate 11 can also be a composite of multiple materials. For example, in an embodiment of the present application, the substrate 11 can include a bottom film layer (Bottom Film), a pressure-sensitive adhesive layer, a first polyimide layer, and a second polyimide layer arranged in sequence.

[0071] The driving circuit layer 13 is provided with a driving circuit for driving the light emitting unit 162. The driving circuit is located in the display area, and any one driving circuit can include a transistor, which can be a thin film transistor, and the thin film transistor can be selected from a top-gate type thin film transistor, a bottom-gate type thin film transistor, or a dual-gate type thin film transistor. Taking the top-gate type thin film transistor as an example, the driving circuit layer 13 can include a first active layer 131, a first gate insulating layer 1321, a first gate layer, a second gate insulating layer 1322, a second gate layer, and a first source-drain metal layer arranged in sequence in a direction away from the substrate base plate 11, wherein:

[0072] The first active layer 131 is arranged on one side of the substrate base plate 11, and the material of the first active layer 131 can be amorphous silicon semiconductor material, low-temperature polysilicon semiconductor material, metal oxide semiconductor material, organic semiconductor material, or other types of semiconductor material, so that the thin film transistor can be an N-type thin film transistor or a P-type thin film transistor. The first active layer 131 can include a channel region and two doped regions of different doping types located on both sides of the channel region.

[0073] The first gate insulating layer 1321 is arranged on the side of the active layer 131 away from the substrate base plate 11, and can cover the active layer 131 and the substrate base plate 11. The first gate layer can include a first gate 1331 arranged on the side of the first gate insulating layer 1321 away from the substrate base plate 11 and opposite to the active layer 131, i.e., the projection of the first gate 1331 on the substrate base plate 11 is located within the projection range of the active layer 131 on the substrate base plate 11, for example, the projection of the first gate 1331 on the substrate base plate 11 coincides with the projection of the channel region of the active layer 131 on the substrate base plate 11. The second gate insulating layer 1322 is arranged on the side of the first gate 1331 away from the substrate base plate 11, and can cover the first gate 1331 and the first gate insulating layer 1321. The second gate layer can include a second gate 1332 arranged on the side of the second gate insulating layer 1322 away from the substrate base plate 11 and opposite to the active layer 131. The materials of the first gate insulating layer 1321 and the second gate insulating layer 1322 are both insulating materials such as silicon oxide.

[0074] The thin film transistor can further include an interlayer dielectric layer 134 disposed on a side of the second gate 1332 distal from the substrate base plate 11, the interlayer dielectric layer 134 covering the second gate 1332 and the second gate insulating layer 1322. The first source-drain metal layer is disposed on a surface of the interlayer dielectric layer 134 distal from the substrate base plate 11, and the first source-drain metal layer can include a first source 135 and a drain 136 connected to the first active layer 131, for example, the first source 135 and the drain 136 are respectively connected to two doped regions of the corresponding first active layer 131 through vias. A protective layer 137 can be further disposed on a side of the first source 135 distal from the substrate base plate 11, the protective layer 137 covering the first source 135 and the drain 136. The drive circuit layer 13 can further include a planarization layer group 139 including a first planarization layer 1391 disposed on a side of the protective layer 137 distal from the substrate base plate 11, the first planarization layer 1391 covering the protective layer 137.

[0075] The drive circuit layer 13 can further include a second source-drain metal layer disposed on a side of the first planarization layer 1391 distal from the substrate base plate 11, the second source-drain metal layer can include a second source 138 connected to the first source 135, and the planarization layer group 139 can further include a second planarization layer 1392 disposed on a side of the second source 138 distal from the substrate base plate 11, the second planarization layer 1392 covering the second source 138 and the first planarization layer 1391.

[0076] The display panel can further include a pixel definition layer 15 and a light-emitting layer 16, the pixel definition layer 15 being disposed on a side of the first planarization layer 1391 or the second planarization layer 1392 distal from the array substrate. The pixel definition layer 15 includes a plurality of pixel definition portions, a pixel opening 151 being formed between any two adjacent pixel definition portions, and the light-emitting layer 16 can include a plurality of light-emitting units 162, the plurality of light-emitting units 162 being respectively disposed in different pixel openings 151. Each light-emitting unit 162 can include a pixel electrode 161, a light-emitting unit 162, and a common electrode 163, the pixel electrode 161 being located on a surface of the first planarization layer 1391 or the second planarization layer 1392 distal from the substrate base plate 11, the light-emitting unit 162 being disposed on a surface of the pixel electrode 161 distal from the substrate base plate 11, and the common electrode 163 being disposed on a surface of the light-emitting unit 162 distal from the substrate base plate 11. The light-emitting unit 162 can be driven to emit light by the pixel electrode 161 and the common electrode 163 to display an image.

[0077] The pixel electrode 161 is connected with the first source electrode 135 or the second source electrode 138. The pixel electrode 161 is provided with the pixel definition layer 15 away from the substrate 11. When the thin film transistor only includes the first source electrode 135, the pixel electrode 161 is connected with the first source electrode 135, and the pixel definition layer 15 covers the pixel electrode 161 and the first planarization layer 1391. When the thin film transistor further includes the second source electrode 138, the pixel electrode 161 is connected with the second source electrode 138, and the pixel definition layer 15 covers the pixel electrode 161 and the second planarization layer 1392.

[0078] The common electrode 163 can serve as a cathode, and the pixel electrode 161 can serve as an anode. The light emitting unit 162 can be driven to emit light by applying a signal to the pixel electrode 161, and the specific light emitting principle is not described here. The light emitting unit 162 can include an electroluminescent material, and can be formed by a process such as evaporation. For example, the light emitting unit 162 can include a hole injection layer, a hole transport layer, a light generating layer, an electron transport layer and an electron injection layer which are sequentially stacked on the pixel electrode 161. It should be noted that the light emitting unit 162 can include a red light emitting unit 1621, a green light emitting unit 1622 and a blue light emitting unit 1623 according to different light emitting colors.

[0079] In addition, the display panel of the present application can further include an encapsulation layer 17 provided on the side of the light emitting layer 16 away from the substrate 11, so as to encapsulate the light emitting layer 16 and prevent water and oxygen from corroding. The encapsulation layer 17 can be a single layer or a multi-layer structure, and the material of the encapsulation layer 17 can include organic or inorganic materials, which are not specifically limited here.

[0080] In the present embodiment, the encapsulation layer 17 can include a first inorganic encapsulation layer 171, an organic encapsulation layer 172 and a second inorganic encapsulation layer 173. The first inorganic encapsulation layer 171 is provided on the side of the light emitting layer 16 away from the substrate 11, the organic encapsulation layer 172 is provided on the side of the first inorganic encapsulation layer 171 away from the substrate 11, and the second inorganic encapsulation layer 173 is provided on the side of the organic encapsulation layer 172 away from the substrate 11.

[0081] As shown in FIG. 4, the display panel further includes a touch control layer 18, which can be a mutual capacitance touch control. The touch control layer 18 can include a first touch electrode layer 181 and a passivation layer 182. The first touch electrode layer 181 is disposed on a side of the encapsulation layer 17 away from the substrate 11, and the passivation layer 182 is disposed on a side of the first touch electrode layer 181 away from the substrate 11. The first touch electrode layer can include a plurality of first touch units 1811. The first touch units 1811 are arranged at intervals, and the orthographic projection of the first touch units 1811 on the substrate 11 is between the orthographic projections of two adjacent light-emitting units 162 on the substrate 11. The passivation layer covers the plurality of first touch units 1811. The touch control layer 18 can further include a second touch electrode layer 183 and a touch insulation layer 184. The second touch electrode layer 183 is disposed between the encapsulation layer 17 and the first touch electrode layer 181, and the touch insulation layer 184 is disposed between the second touch electrode layer 183 and the first touch electrode layer 181. The first touch electrode layer 181 can be a metal mesh layer (MM), and the second touch electrode layer 183 can be a bridge metal layer (BM). The first touch electrode layer 181 can also be a bridge metal layer, and the second touch electrode layer 183 can be a metal mesh layer.

[0082] The display panel can further include a light-blocking layer 191 including a plurality of light-blocking units 1911. The light-blocking units 1911 are disposed on a side of the passivation layer away from the substrate 11. The orthographic projection of the first touch units 1811 on the substrate 11 is covered by the orthographic projection of the light-blocking units 1911 on the substrate 11, that is, the orthographic projection of the first touch units 1811 on the substrate 11 is located within the orthographic projection of the light-blocking units 1911 on the substrate 11, and the area of the orthographic projection of the first touch units 1811 on the substrate 11 is smaller than the area of the orthographic projection of the light-blocking units 1911 on the substrate 11. The light-blocking units 1911 form a light-transmitting opening 1912 between the sides close to each other.

[0083] As shown in FIG. 4 and FIG. 5, the display panel can further include a first cover layer 192 including a plurality of first cover portions 1921. The first cover portions 1921 are disposed on a side of the light-blocking units 1911 away from the substrate 11, and the first cover portions 1921 cover the light-blocking units 1911. Adjacent two first cover portions 1921 form a color-resistance opening 1922. The orthographic projection of the color-resistance opening 1922 on the substrate 11 is located within the orthographic projection of the light-transmitting opening 1912 on the substrate 11. In this embodiment, the thickness of the first cover portions 1921 can be 1.5-2.5 μm.

[0084] Because the first covering part 1921 covers the light shielding unit 1911, the width and thickness of the light shielding unit 1911 are relatively large, and therefore the side surface of the first covering part 1921 forms a stepped surface, specifically, the side surface of the first covering part 1921 includes a first inclined surface 1923, a flat surface 1924 and a second inclined surface 1925, the slope angle of the first inclined surface 1923 is 30-50 degrees, the flat surface 1924 is arranged at one end of the first inclined surface 1923 away from the substrate 11, the flat surface 1924 is parallel to the surface of the substrate 11, and the second inclined surface 1925 is arranged at one end of the flat surface 1924 away from the first inclined surface 1923, and the slope angle of the second inclined surface 1925 is 45-75 degrees.

[0085] The display panel further includes a filter layer, and the filter layer includes filter units 193 of different colors, the filter units 193 of different colors include red filter units 1931, green filter units 1932 and blue filter units 1933, the orthographic projection of the red filter units 1931 on the substrate 11 covers the orthographic projection of the red light emitting units 1621 on the substrate 11, the orthographic projection of the green filter units 1932 on the substrate 11 covers the orthographic projection of the green light emitting units 1622 on the substrate 11, and the orthographic projection of the blue filter units 1933 on the substrate 11 covers the orthographic projection of the blue light emitting units 1623 on the substrate 11.

[0086] The first covering part 1921 is made of a low refractive index resin material with a refractive index of 1.45-1.5, the refractive index of the red filter unit is generally 1.65-1.85, and the refractive index of the green filter unit and the refractive index of the blue filter unit are generally 1.55-1.7. In this embodiment, the refractive index of the red filter unit 1931 is 1.7, the refractive index of the green filter unit 1932 and the refractive index of the blue filter unit 1933 are 1.6, and the refractive index of the filter units 193 of the three colors is higher than the refractive index of the first covering part 1921, so that the emergent light rays of the oblique viewing angle can be totally reflected on the side surface of the first covering part 1921 and deflected to the direction of the normal viewing angle to be emitted, thereby improving the light emission efficiency of the normal viewing angle. Among them, the emergent light rays with smaller emergent angles can be totally reflected on the interface between the first inclined surface 1923 and the filter unit 193, and the emergent light rays with larger emergent angles can be totally reflected on the interface between the second inclined surface 1925 and the filter unit 193.

[0087] The display panel can further include a second covering layer 20, the second covering layer 20 covers the side of the filter units 193 and the light shielding unit 1911 away from the substrate 11, and the gap formed between the filter units 193 and the light shielding unit 1911.

[0088] As shown in FIG. 6, different from the display panel in FIG. 5, the first covering part 1921 is arranged on the side of the first touch unit 1811 away from the substrate 11, and the first covering part 1921 covers the first touch unit 1811. Since the width and thickness of the first touch unit 1811 are small, the side surface of the first covering part 1921 is a bevel, and the slope angle of the side surface of the first covering layer 192 is 55-85 degrees. The distance between the edge of the side of the first covering part 1921 close to the substrate 11 and the edge of the side of the pixel defining part close to the substrate 11 is 0.5-2 μm.

[0089] The light filtering unit 193 is arranged in the color resistance opening 1922 formed by the two adjacent first covering parts 1921, the thickness of the light filtering unit 193 is greater than the thickness of the first covering part 1921, the light filtering unit 193 covers the side surface of the first covering part 1921, and the light shielding unit 1911 is arranged in the partial region of the first covering part 1921 away from the substrate 11, the non-overlapping region of the first covering part 1921 and the light filtering unit 193 is a bare region, the light shielding unit 1911 is arranged in the bare region, the thickness of the light shielding unit 1911 can be 1-2 μm, the orthographic projection of the light filtering unit 193 on the substrate 11 is located in the orthographic projection of the light transmission opening 1912 on the substrate 11, and the distance between the edge of the light filtering unit 193 and the edge of the side of the first covering part 1921 away from the substrate 11 is 1-3 μm. The distance between the light shielding unit 1911 and the light filtering unit 193 is greater than 0, and in this embodiment, the distance between the light shielding unit 1911 and the light filtering unit 193 is preferably 1-2 μm.

[0090] Compared with the display panel in FIG. 5, first, the display panel in FIG. 6 insulates the first touch unit 1811 by the first covering part 1921, and the passivation layer is omitted, so that the thickness of the display panel can be further reduced. In addition, in the manufacturing process of the display panel, one mask plate used for manufacturing the passivation layer is reduced, and the manufacturing cost of the display panel is reduced. Compared with the method of replacing the polarizer with the color film, there is no production loss. Second, the shape of the first covering part 1921 is trapezoidal, and the side surface is a conventional bevel, and the slope angle is easier to control.

[0091] Furthermore, the depth of the color resistance opening 1922 in FIG. 6 is smaller than the depth of the color resistance opening 1922 in FIG. 5, the light filtering unit 193 and the light shielding unit 1911 are arranged in a spaced manner, the thickness of the light filtering unit 193 is only affected by the thickness of the first covering part 1921, and is not limited by the thickness of the light shielding unit 1911, so that the thickness of the light filtering unit 193 is less limited, and it is more conducive to flexibly adjusting the light efficiency and dark state color of the display panel.

[0092] Because the center of the light-filtering unit 193 and the center of the light-emitting unit 162 are located on the same straight line, the distances between the edges of the light-filtering units 193 of different colors away from the one surface of the substrate 11 and the edges of the light-emitting units 162 of different colors close to the one surface of the substrate 11 are equal. The distance between the edge of the red light-filtering unit 1931 away from the one surface of the substrate 11 and the edge of the red light-emitting unit 1621 close to the one surface of the substrate 11 is defined as a first total distance, the distance between the edge of the green light-filtering unit 1932 away from the one surface of the substrate 11 and the edge of the green light-emitting unit 1622 close to the one surface of the substrate 11 is defined as a second total distance, and the distance between the edge of the blue light-filtering unit 1933 away from the one surface of the substrate 11 and the edge of the blue light-emitting unit 1623 close to the one surface of the substrate 11 is defined as a third total distance. The first total distance, the second total distance, and the third total distance are equal.

[0093] The distance between the edge of the red light-filtering unit 1931 close to the one surface of the substrate 11 and the edge of the red light-emitting unit 1621 close to the one surface of the substrate 11 is a first outer expansion distance a1, the distance between the edge of the green light-filtering unit 1932 close to the one surface of the substrate 11 and the edge of the green light-emitting unit 1622 close to the one surface of the substrate 11 is a second outer expansion distance a2, and the distance between the edge of the blue light-filtering unit 1933 close to the one surface of the substrate 11 and the edge of the blue light-emitting unit 1623 close to the one surface of the substrate 11 is a third outer expansion distance a3. The distance between the edge of the red light-filtering unit 1931 close to the one surface of the substrate 11 and the edge of the red light-filtering unit 1931 away from the one surface of the substrate 11 is a first extension distance b1, the distance between the edge of the green light-filtering unit 1932 close to the one surface of the substrate 11 and the edge of the green light-filtering unit 1932 away from the one surface of the substrate 11 is a second extension distance b2, and the distance between the edge of the blue light-filtering unit 1933 close to the one surface of the substrate 11 and the edge of the blue light-filtering unit 1933 away from the one surface of the substrate 11 is a third extension distance b3. The first total distance is equal to the sum of the first outer expansion distance a1 and the first extension distance b1, the second total distance is equal to the sum of the second outer expansion distance a2 and the second extension distance b2, and the third total distance is equal to the sum of the third outer expansion distance a3 and the third extension distance b3.

[0094] As shown in FIG. 7, compared with the display panel in FIG. 6, the first outer expansion distance a1, the second outer expansion distance a2 and the third outer expansion distance a3 are adjusted in order to balance the light extraction efficiency of the red filter units 1931, the green filter units 1932 and the blue filter units 1933, because the refractive indexes of different filter units 193 are different. The greater the refractive index of the filter unit 193 is, the greater the outer expansion distance of the edge of the one side of the filter unit 193 close to the substrate 11 relative to the edge of the one side of the light emitting unit 162 close to the substrate 11 is. Since the refractive index of the red filter unit 1931 is greater than the refractive index of the green filter unit 1932 and the refractive index of the blue filter unit 1933, the first outer expansion distance a1 is greater than the second outer expansion distance a2 and the third outer expansion distance a3.

[0095] The color resistance opening 1922 of the red filter unit 1931 is defined as the first color resistance opening 1922, the color resistance opening 1922 of the green filter unit 1932 is defined as the second color resistance opening 1922, and the color resistance opening 1922 of the blue filter unit 1933 is defined as the third color resistance opening 1922. The width of the normal projection of the side of the first color resistance opening 1922 on the substrate 11 is defined as the first coverage distance, the width of the normal projection of the side of the second color resistance opening 1922 on the substrate 11 is defined as the second coverage distance, and the width of the normal projection of the side of the third color resistance opening 1922 on the substrate 11 is defined as the third coverage distance. The width of the one side of the red filter unit 1931 away from the substrate 11 covered on the first coverage part 1921 is defined as the first lap distance c1, the width of the one side of the green filter unit 1932 away from the substrate 11 covered on the first coverage part 1921 is defined as the second lap distance c2, and the width of the one side of the blue filter unit 1933 away from the substrate 11 covered on the first coverage part 1921 is defined as the third lap distance c3.

[0096] According to the refractive indexes of the different filter units 193, the first outer expansion distance a1 is 1-3 μm, the second outer expansion distance a2 is 0-2 μm, the third outer expansion distance a3 is 0-2 μm, the first extension distance b1, the second extension distance b2, and the third extension distance b3 are 1.5-5 μm, the first overlap distance c1, the second overlap distance c2, and the third overlap distance c3 are 0-3.5 μm, the distance d1 between the red filter unit 1931 and the adjacent light shielding unit 1911, the distance d2 between the green filter unit 1932 and the adjacent light shielding unit 1911, and the distance d3 between the blue filter unit 1933 and the adjacent light shielding unit are 0-3 μm. In the embodiment, the first outer expansion distance a1 is 1.5 μm, the second outer expansion distance a2 is 0.5 μm, the third outer expansion distance a3 is 0.5 μm, the first extension distance b1 is 3 μm, the second extension distance b2 is 4 μm, and the third extension distance b3 is 4 μm. The first overlap distance, the second overlap distance, and the third overlap distance are equal, the first overlap distance is 1.5 μm, the second overlap distance is 1.5 μm, and the third overlap distance is 1.5 μm. The first overlap distance c1 can be 1.5 μm, the second overlap distance c2 can be 2.5 μm, and the third overlap distance c3 can be 2.5 μm. The distance d1 between the red filter unit 1931 and the adjacent light shielding unit 1911 is 1 μm, the distance d2 between the green filter unit 1932 and the adjacent light shielding unit 1911 is 1 μm, and the distance d3 between the blue filter unit 1933 and the adjacent light shielding unit is 1 μm.

[0097] In other implementable embodiments, the refractive index of the red filter unit 1931, the refractive index of the green light emitting unit 1622, and the refractive index of the blue light emitting unit 1623 can also be set to be the same. When the refractive index of the red filter unit 1931, the refractive index of the green light emitting unit 1622, and the refractive index of the blue light emitting unit 1623 are the same, the first outer expansion distance a1, the second outer expansion distance a2, and the third outer expansion distance are equal, i.e., the ratio of the first outer expansion distance a1, the second outer expansion distance a2, and the third outer expansion distance a3 is 1:1:1.

[0098] As shown in FIG. 8, compared with the display panel in FIG. 6, the light filtering units 193 extend from the side of the first covering part 1921 to the side of the first covering part 1921 away from the substrate 11, and two adjacent light filtering units 193 are connected to each other, the red light filtering unit 1931 is connected to the green light filtering unit 1932, the green light filtering unit 1932 is connected to the blue light filtering unit 1933, and the side of the red light filtering unit 1931, the green light filtering unit 1932 and the blue light filtering unit 1933 away from the substrate 11 are located in the same horizontal plane. The light shielding unit 1911 is arranged on the side of the light filtering unit 193 away from the substrate 11, and is located at the connection of two light filtering units 193. The orthographic projection of the light shielding unit 1911 on the substrate 11 and the orthographic projection of the light filtering units 193 of different colors on the substrate 11 overlap respectively. When the display panel in FIG. 8 is manufactured, the process precision requirement of the light filtering unit 193 is lower.

[0099] As shown in FIG. 9, compared with the display panel in FIG. 6, the light filtering units 193 extend from the side of the first covering part 1921 to the side of the first covering part 1921 away from the substrate 11, and extend to the side of the light shielding unit 1911 away from the substrate 11. The side of the red light filtering unit 1931, the side of the green light filtering unit 1932 and the side of the blue light filtering unit 1933 away from the substrate 11 can be located in the same plane, or the thicknesses of the red light filtering unit 1931, the green light filtering unit 1932 and the blue light filtering unit 1933 can be different, that is, the side of the red light filtering unit 1931, the side of the green light filtering unit 1932 and the side of the blue light filtering unit 1933 away from the substrate 11 are located in different planes.

[0100] Compared with the display panel in FIG. 6, the width proportion of the light shielding unit 1911 and two adjacent light filtering units 193 of different colors on the first covering part 1921 does not need to be considered, and only the adjacent light filtering units 193 of different colors need to be arranged at intervals, so that the process precision requirement of the light filtering unit 193 and the light shielding unit 1911 is lower.

[0101] As shown in FIG. 10, the first covering part 1921 includes the first covering unit 1926, the second covering unit 1927 and the third covering unit 1928 which are arranged at intervals, the first covering unit 1926 is arranged between the second covering unit 1927 and the third covering unit 1928, the slope angle of the side surface of the first covering unit 1926, the second covering unit 1927 and the third covering unit 1928 is less than 90 degrees, the first covering unit 1926 covers the first touch unit 1811, the light shielding unit 1911 covers the first covering unit 1926, the groove formed between the second covering unit 1927 and the first covering unit 1926 and the groove formed between the third covering unit 1928 and the first covering unit 1926, and the two filter units 193 of different colors cover the side of the second covering unit 1927 and the third covering unit 1928 away from the substrate 11 respectively.

[0102] As shown in FIG. 10, the red filter unit 1931 covers the third covering unit 1928 of the first first covering part 1921 and the second covering unit 1927 of the second first covering part 1921, the green filter unit 1932 covers the third covering unit 1928 of the second first covering part 1921 and the second covering unit 1927 of the third first covering part 1921, and the blue filter unit 1933 covers the third covering unit 1928 of the third first covering part 1921 and the second covering unit 1927 of the fourth first covering part 1921, and so on.

[0103] Compared with the display panel in FIG. 6, the light shielding unit 1911 of the display panel in FIG. 10 is sunken on both sides, and the distance between the light shielding unit 1911 and the light emitting unit 162 is reduced, which is beneficial to the improvement of the oblique viewing angle luminance decay of the display panel.

[0104] As shown in FIG. 11, the difference from FIG. 10 is that the first covering unit 1926 covers the first touch unit 1811, the two filter units 193 of different colors cover the second covering unit 1927, the groove formed between the second covering unit 1927 and the first covering unit 1926, the third covering unit 1928 and the groove formed between the third covering unit 1928 and the first covering unit 1926 respectively, and the light shielding unit 1911 covers the first covering unit 1926 and the filter units 193 of different colors in different grooves.

[0105] As shown in FIG. 11, the red filter unit 1931 covers the third covering unit 1928 of the first first covering part 1921 and the second covering unit 1927 of the second first covering part 1921, the groove between the third covering unit 1928 of the first first covering part 1921 and the first covering unit 1926, the groove between the second covering unit 1927 of the second first covering part 1921 and the first covering unit 1926, the green filter unit 1932 covers the third covering unit 1928 of the second first covering part 1921 and the second covering unit 1927 of the third first covering part 1921, the groove between the third covering unit 1928 of the second first covering part 1921 and the first covering unit 1926, the groove between the second covering unit 1927 of the third first covering part 1921 and the first covering unit 1926, the blue filter unit 1933 covers the third covering unit 1928 of the third first covering part 1921 and the second covering unit 1927 of the fourth first covering part 1921, the groove between the third covering unit 1928 of the third first covering part 1921 and the first covering unit 1926, the groove between the second covering unit 1927 of the fourth first covering part 1921 and the first covering unit 1926, and so on.

[0106] It should be noted that, for simplifying the drawings, the second touch electrode layer 183 and the touch insulation layer 184 are omitted in FIG. 5 to FIG. 11 except for FIG. 4. The first covering layer 192 in FIG. 6 to FIG. 11 is multiplexed as the passivation layer 182, and the first covering layer 192 plays the same role as the passivation layer 182, so it is not necessary to additionally set the passivation layer 182.

[0107] The structure of the display panel is further explained in combination with the planar schematic diagram of the pixel definition layer 15, the first covering layer 192, the light shielding layer 191 and the filter layer.

[0108] Fig. 16 is a plan view of the display panel of Figs. 4, 5 and 9 after stacking of the layers of the display panel, and Figs. 12 to 15 are plan views of the layers of the display panel of Figs. 4, 5 and 9. The shape of the pixel opening 151, the shape of the color resist opening 1922, the shape of the light-transmissive opening 1912 and the shape of the light-filtering unit 193 are similar, and in this embodiment, the shape of the pixel opening 151, the shape of the color resist opening 1922 and the shape of the light-transmissive opening 1912 can be circular, the orthographic projection of the pixel opening 151 on the substrate 11 is located within the orthographic projection of the color resist opening 1922 on the substrate 11, the orthographic projection of the color resist opening 1922 on the substrate 11 is located within the orthographic projection of the light-transmissive opening 1912 on the substrate 11, the shape of the light-filtering unit 193 is also circular, and the edge of the orthographic projection of the light-filtering unit 193 on the substrate 11 is located at the periphery of the edge of the orthographic projection of the light-transmissive opening 1912 on the substrate 11. It should be noted that the circular shape is merely an exemplary illustration of the shape of the pixel opening 151, the shape of the color resist opening 1922, the shape of the light-transmissive opening 1912 and the shape of the light-filtering unit 193, and other shapes can also be provided as needed, which are not limited in detail herein.

[0109] Fig. 18 is a plan view of the display panel of Figs. 6 and 7 after stacking of the layers of the display panel, and Fig. 17 is a plan view of the light-filtering layer of the display panel of Figs. 6 and 7, and the remaining layers can be referred to Figs. 12 to 14. The shape of the pixel opening 151, the shape of the color resist opening 1922, the shape of the light-transmissive opening 1912 and the shape of the light-filtering unit 193 are similar, and in this embodiment, the shape of the pixel opening 151, the shape of the color resist opening 1922 and the shape of the light-transmissive opening 1912 can be circular, the orthographic projection of the pixel opening 151 on the substrate 11 is located within the orthographic projection of the color resist opening 1922 on the substrate 11, the orthographic projection of the color resist opening 1922 on the substrate 11 is located within the orthographic projection of the light-transmissive opening 1912 on the substrate 11, and the orthographic projection of the light-filtering unit 193 on the substrate 11 is located between the edge of the orthographic projection of the color resist opening 1922 on the substrate 11 and the edge of the orthographic projection of the light-transmissive opening 1912 on the substrate 11.

[0110] Fig. 20 is a plan view of the display panel of Fig. 8 after the layers are stacked, and Fig. 19 is a plan view of the filter layer of the display panel of Fig. 8, and the remaining layers can refer to Figs. 12-14. The shape of the pixel opening 151, the shape of the color resistance opening 1922, and the shape of the light transmission opening 1912 are similar, and in this embodiment, the shape of the pixel opening 151, the shape of the color resistance opening 1922, and the shape of the light transmission opening 1912 can be circular, the orthographic projection of the pixel opening 151 on the substrate 11 is located within the orthographic projection of the color resistance opening 1922 on the substrate 11, the orthographic projection of the color resistance opening 1922 on the substrate 11 is located within the orthographic projection of the light transmission opening 1912 on the substrate 11, and the edge of the orthographic projection of the filter unit 193 on the substrate 11 is located on the periphery of the edge of the orthographic projection of the light transmission opening 1912 on the substrate 11. The difference from Figs. 17 and 18 is that, in order to ensure that two adjacent filter units 193 of different colors are connected to each other, the coverage of the filter unit 193 needs to be expanded, as shown in Figs. 19 and 20, the coverage of the red filter unit 1931 can be expanded until it is connected to the green filter unit 1932 and the blue filter unit 1933. Of course, the coverage of the green filter unit 1932 or the blue filter unit 1933 can also be expanded, and the coverage of the red filter unit 1931, the coverage of the green filter unit 1932, and the coverage of the blue filter unit 1933 can also be adjusted separately, as long as the filter units 193 of different colors are connected to each other. However, it is best to change the coverage of only one type of filter unit 193, which only requires the change of one mask plate and one mask plate process, and the process cost is lower.

[0111] Fig. 22 is a plan view of the display panel of Fig. 10 after the layers are stacked, and Fig. 21 is a plan view of the first cover layer of the display panel of Fig. 10, and the remaining layers can refer to Figs. 12, 13 and 15. The shape of the pixel opening 151, the shape of the color resistance opening 1922, the shape of the light transmission opening 1912 and the shape of the light filtering unit 193 are similar. In this embodiment, the shape of the pixel opening 151, the shape of the color resistance opening 1922 and the shape of the light transmission opening 1912 can be circular, the orthographic projection of the pixel opening 151 on the substrate 11 is located within the orthographic projection of the color resistance opening 1922 on the substrate 11, the orthographic projection of the light filtering unit 193 of different colors on the substrate 11 is located between the inner edge and the outer edge of the orthographic projection of the second cover unit 1927 and the third cover unit 1928 on the substrate 11, the orthographic projection of the second cover unit 1927 on the substrate 11 is located between the orthographic projection of the second cover unit 1927 and the third cover unit 1928 on the substrate 11, the edge of the orthographic projection of one light transmission opening 1912 on the substrate 11 is located between the orthographic projection of the first cover unit 1926 on the substrate 11 and the orthographic projection of the second cover unit 1927 on the substrate 11, and the edge of the orthographic projection of the other light transmission opening 1912 on the substrate 11 is located between the orthographic projection of the first cover unit 1926 on the substrate 11 and the orthographic projection of the third cover unit 1928 on the substrate 11.

[0112] In the above embodiment, the first cover part 1921 is provided with a protrusion 1929 on the side close to each other, the protrusion 1929 can increase the area of the interface between the side of the first cover part 1921 and the light filtering unit 193, improve the probability of generating total reflection of the outgoing light, the protrusion 1929 extends from the side of the first cover part 1921 close to the substrate 11 to the side away from the substrate 11, the height of the protrusion 1929 protruding is always equal in the extension direction of the side of the first cover part 1921, which ensures the uniformity of reflection in the thickness direction of the first cover part 1921, and a plurality of protrusions 1929 are distributed along the edge of the color resistance opening 1922, which ensures the uniformity of reflection in the extension direction of the contour of the color resistance opening 1922.

[0113] The display device can include the display panel of any one of the embodiments of the present application. The specific structure and advantages of the display panel have been described in detail above, and therefore will not be described here.

[0114] It should be noted that the display device includes other necessary components and compositions in addition to the display panel, for example, a shell, a circuit board, a power cord, etc., and those skilled in the art can supplement accordingly according to the specific use requirements of the display device, which will not be repeated here.

[0115] The display device can also be a new wearable device, for example: virtual reality device and augmented reality device, the display device can be a traditional electronic device, for example: mobile phone, computer, television and camcorder. Here is not listed one by one.

[0116] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

Claims

1. A display panel, wherein, The display panel comprises: a driving back plate; a pixel definition layer arranged on one side of the driving back plate, the pixel definition layer comprising a plurality of pixel definition portions, pixel openings being formed between sides of the pixel definition portions close to each other; a plurality of pixel electrodes respectively arranged in different pixel openings; a plurality of light-emitting units of different colors respectively arranged on sides of the pixel electrodes away from the driving back plate; a common electrode arranged on a side of the plurality of light-emitting units away from the driving back plate; a first touch electrode layer arranged on a side of the common electrode away from the driving back plate, the first touch electrode layer comprising a plurality of first touch units, the plurality of first touch units being arranged at intervals; a first cover layer comprising a plurality of first cover portions, the first cover portions being arranged on a side of the first touch units away from the driving back plate, color resistance openings being formed between sides of the first cover portions close to each other, and an angle of slope of the side of the first cover portion being less than 90 degrees; a filter layer comprising filter units of different colors, each of the filter units being arranged in a different color resistance opening, the filter unit covering the side of the first cover portion, a normal projection of the filter unit on the driving back plate covering a normal projection of the light-emitting unit on the driving back plate, and a refractive index of the filter unit being greater than a refractive index of the first cover portion; a light shielding layer comprising a plurality of light shielding units, the light shielding units being arranged between the first touch units and the first cover portions or on a side of the first cover portions away from the driving back plate, the light shielding unit covering a normal projection of the first touch unit on the driving back plate, the light shielding units forming light transmission openings between sides of the light shielding units close to each other, and a normal projection of the color resistance opening on the driving back plate being located in a normal projection of the light transmission opening on the driving back plate.

2. The display panel of claim 1, wherein, The filter unit extends from the side of the first cover portion to a side of the first cover portion away from the driving back plate.

3. The display panel of claim 2, wherein, When the light shielding units are arranged between the first touch units and the first cover portions, the side of the first cover portion comprises a first inclined surface, a flat surface and a second inclined surface, an angle of slope of the first inclined surface being 30-50 degrees, the flat surface being arranged at an end of the first inclined surface away from the driving back plate, the flat surface being parallel to a surface of the driving back plate, the second inclined surface being arranged at an end of the flat surface away from the first inclined surface, and an angle of slope of the second inclined surface being 45-75 degrees.

4. The display panel of claim 3, wherein, The display panel further comprises a passivation layer arranged on a side of the first touch electrode layer away from the driving back plate, the passivation layer covering the plurality of first touch units.

5. The display panel of claim 2, wherein, When the light shielding units are arranged on the side of the first cover portions away from the driving back plate, the side of the first cover portion is an inclined surface, and an angle of slope of the side of the first cover layer is 55-85 degrees.

6. The display panel of claim 5, wherein, The filter unit is arranged on the side of the first cover portion away from the driving back plate, and a normal projection of the filter unit on the driving back plate is located in a normal projection of the light transmission opening on the driving back plate.

7. The display panel of claim 6, wherein, The distance between the edge of the light shielding unit and the edge of the light filtering unit is 1-3 μm, and the distance between the light filtering units of different colors and the adjacent light shielding unit is equal.

8. The display panel of claim 1, wherein, The greater the refractive index of the light filtering units of different colors, the greater the distance between the edge of the light filtering unit on the side close to the driving backboard and the edge of the light emitting unit on the side close to the driving backboard.

9. The display panel of claim 8, wherein, The light emitting units of different colors include red light emitting units, green light emitting units and blue light emitting units, and the light filtering units of different colors include red light filtering units, green light filtering units and blue light filtering units, the orthographic projection of the red light filtering unit on the driving backboard covers the orthographic projection of the red light emitting unit on the driving backboard, the orthographic projection of the green light filtering unit on the driving backboard covers the orthographic projection of the green light emitting unit on the driving backboard, and the orthographic projection of the blue light filtering unit on the driving backboard covers the orthographic projection of the blue light emitting unit on the driving backboard.

10. The display panel of claim 9, wherein, The distance between the edge of the red light filtering unit on the side close to the driving backboard and the edge of the red light emitting unit on the side close to the driving backboard is a first outward expansion distance, the distance between the edge of the green light filtering unit on the side close to the driving backboard and the edge of the green light emitting unit on the side close to the driving backboard is a second outward expansion distance, the distance between the edge of the blue light filtering unit on the side close to the driving backboard and the edge of the blue light emitting unit on the side close to the driving backboard is a third outward expansion distance, the refractive index of the red light filtering unit is 1.65-1.85, the refractive index of the green light filtering unit and the refractive index of the blue light filtering unit are 1.55-1.7, the first outward expansion distance is 1-3 μm, the second outward expansion distance is 0-2 μm, and the ratio of the third outward expansion distance is 0-2 μm.

11. The display panel of claim 1, wherein, The orthographic projection of the light filtering unit on the driving backboard covers the orthographic projection of the light transmitting opening on the driving backboard.

12. The display panel of claim 5, wherein, Two adjacent light filtering units are connected to each other, the light shielding unit is arranged on the side of the light filtering unit away from the driving backboard and located at the connection of the two light filtering units, and the orthographic projection of the light shielding unit on the driving backboard overlaps the orthographic projection of the light filtering unit of different colors on the driving backboard.

13. The display panel of claim 5, wherein, The light shielding unit is arranged on the side of the first covering part away from the driving backboard, the light filtering unit extends to the side of the light shielding unit away from the driving backboard, and two adjacent light filtering units of different colors are arranged at intervals.

14. The display panel of claim 5, wherein, The first covering part comprises a first covering unit, a second covering unit and a third covering unit arranged at intervals, the first covering unit is arranged between the second covering unit and the third covering unit, the slope angle of the side surface of the first covering unit, the second covering unit and the third covering unit is less than 90 degrees, the first covering unit covers the first touch unit, the light shielding unit covers the first covering unit, the recess formed between the second covering unit and the first covering unit and the recess formed between the third covering unit and the first covering unit, and the two filter units of different colors cover the second covering unit and the third covering unit away from the driving back plate respectively.

15. The display panel of claim 5, wherein, The first covering part comprises a first covering unit, a second covering unit and a third covering unit arranged at intervals, the first covering unit is arranged between the second covering unit and the third covering unit, the slope angle of the side surface of the first covering unit, the second covering unit and the third covering unit is less than 90 degrees, the first covering unit covers the first touch unit, the light shielding unit covers the first covering unit and the filter units of different colors in different recesses.

16. The display panel of claim 1, wherein, The side of the first covering part close to each other is provided with a protrusion.

17. The display panel of claim 16, wherein, The protrusion extends from the side of the first covering part close to the driving back plate to the side away from the driving back plate, and the height of the protrusion is always equal in the extension direction of the side surface of the first covering part.

18. The display panel of claim 16, wherein, A plurality of protrusions are distributed along the edge of the color resist opening.

19. The display panel of claim 5, wherein, The extension distance between the edge of the first covering part close to the driving back plate and the edge of the pixel defining part close to the driving back plate is 0.5-2 μm.

20. The display panel of claim 5, wherein, The distance between the edge of the light shielding unit and the edge of the first covering part away from the driving back plate is 1-3 μm.

21. The display panel of claim 9, wherein, The extension distance between the edge of the filter unit close to the driving back plate and the edge of the filter unit away from the driving back plate is 0-2 μm.

22. The display panel of claim 1, wherein, The display panel further comprises a second covering layer arranged on the side of the filter layer away from the driving back plate.

23. The display panel of claim 1, wherein, The display panel further comprises an encapsulation layer arranged between the first touch electrode layer and the common electrode.

24. A display device comprising: The display panel comprises any one of claims 1-23.

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