Display panel and display device

Abstract

The display panel comprises first covering parts, the first covering parts are arranged on the sides, away from a substrate, of first touch control units, insulation of the first touch control units can be achieved through the first covering parts, a color resistance opening is formed between every two adjacent first covering parts, light filtering units are arranged in the different color resistance openings respectively, and therefore the light filtering effect is improved. The light filtering unit covers the side face of the first covering part, and the refractive index of the light filtering unit is larger than that of the first covering part, so that emergent light of a squint angle of the light emitting unit can generate total reflection on the interface of the side face of the first covering part and the light filtering unit, and the emergent light of the squint angle is deflected to the direction of a positive angle to be emitted. Therefore, a light path regulation and control layer does not need to be independently arranged, the thickness of the display panel is reduced, and lightening and thinning of the display panel are facilitated. The utility model further provides a display device comprising the display panel.

Description

Technical Field

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

[0002] FMLOC (Flexible Multi-Layer On Cell) design is currently the mainstream in the field of OLED touch display. FMLOC design refers to making a metal electrode layer on the packaging layer of the display substrate, and the surface of the metal electrode layer reflects the ambient light significantly.

[0003] In order to reduce ambient light reflection and improve contrast, a color filter layer and / or a light path regulation layer is provided on the side of the light emitting layer away from the driving backplane, which results in a thicker display panel and is not conducive to thinning the display panel.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the invention

[0005] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a display panel and a display device.

[0006] According to one aspect of the present invention, a display panel is provided, which includes 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 covering layer, a filter layer and a light shielding layer, wherein the pixel defining layer is arranged on one side of the driving backplane, the pixel defining layer includes a plurality of pixel defining parts, and a pixel opening is formed between the sides of the pixel defining parts close to each other; the plurality of pixel electrodes are respectively arranged in different pixel openings; the plurality of light-emitting units of different colors are respectively arranged on the side of each pixel electrode 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, the first touch electrode layer includes a plurality of first touch units, and the plurality of first touch units are arranged at intervals; the first covering layer includes a plurality of first covering parts, and the first covering parts are arranged A color-resistance opening is formed between a side of the first touch unit away from the driving backplane and a side of the first covering portion where the first covering portion is close to each other, and a slope angle of a side of the first covering portion is less than 90 degrees; the filter layer includes filter units of different colors, each filter unit is respectively arranged in a different color-resistance opening, the filter unit covers the side of the first covering portion, the orthographic projection of the filter unit on the driving backplane covers the orthographic projection of the light-emitting unit on the driving backplane, and the refractive index of the filter unit is greater than the refractive index of the first covering portion; the shading layer includes a plurality of shading units, the shading unit is arranged between the first touch unit and the first covering portion, or is arranged on a side of the first covering portion away from the driving backplane, the shading unit covers the orthographic projection of the first touch unit on the driving backplane, a light-transmitting opening is formed between the sides of the shading units where the light-transmitting opening is close to each other, and the orthographic projection of the color-resistance opening on the driving backplane is located within the orthographic projection of the light-transmitting opening on the driving backplane.

[0007] In one embodiment of the present invention, the filter unit extends from a side surface of the first covering portion to a surface of the first covering portion away from the driving back plate.

[0008] In one embodiment of the present invention, when the shading unit is disposed between the first touch unit and the first covering portion, the side surface of the first covering portion includes a first inclined surface, a straight surface and a second inclined surface, the slope angle of the first inclined surface is 30-50 degrees, the straight surface is disposed at an end of the first inclined surface away from the driving back plate, the straight surface and the surface of the driving back plate are parallel to each other, and the second inclined surface is disposed at an end of the straight surface away from the first inclined surface, and the slope angle of the second inclined surface is 45-75 degrees.

[0009] In one embodiment of the present invention, the display panel further comprises a passivation layer, which is disposed on a side of the first touch electrode layer away from the driving backplane, and the passivation layer covers the plurality of first touch units.

[0010] In one embodiment of the present invention, when the shading unit is disposed on a side of the first covering portion away from the driving backplane, the side surface of the first covering portion is an inclined surface, and the slope angle of the side surface of the first covering layer is 55-85 degrees.

[0011] In one embodiment of the present invention, the filter unit is disposed on a side of the first covering portion away from the driving back plate, and the orthographic projection of the filter unit on the driving back plate is located within the orthographic projection of the light-transmitting opening on the driving back plate.

[0012] In one embodiment of the present invention, the distance between the edge of the shading unit and the edge of the filter unit is 1-3 μm, and the distances between filter units of different colors and adjacent shading units are equal.

[0013] In one embodiment of the present invention, the greater the refractive index of different filter units, the greater the distance between the edge of the filter unit close to the driving backplane and the edge of the light emitting unit close to the driving backplane.

[0014] In one embodiment of the present invention, the multiple light-emitting units of different colors include a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and the filter units of different colors include a red filter unit, a green filter unit and a blue filter unit, the orthographic projection of the red filter unit on the driving backplane covers the orthographic projection of the red light-emitting unit on the driving backplane, the orthographic projection of the green filter unit on the driving backplane covers the orthographic projection of the green light-emitting unit on the driving backplane, and the orthographic projection of the blue filter unit on the driving backplane covers the orthographic projection of the blue light-emitting unit on the driving backplane.

[0015] In one embodiment of the present invention, the distance between the edge of the red filter unit close to the driving backplane and the edge of the red light-emitting unit close to the driving backplane is a first outward expansion distance, the distance between the edge of the green filter unit close to the driving backplane and the edge of the green light-emitting unit close to the driving backplane is a second outward expansion distance, the distance between the edge of the blue filter unit close to the driving backplane and the edge of the blue light-emitting unit close to the driving backplane is a third outward expansion distance, the refractive index of the red filter unit is 1.65-1.85, the refractive index of the green filter unit and the refractive index of the blue filter unit are 1.55-1.7, the first outward expansion distance is 1-3μm, the second outward expansion distance is 0-2μm, and the ratio of the third outward expansion distance is 0-2μm.

[0016] In one embodiment of the present invention, the orthographic projection of the filter unit on the driving backplane covers the orthographic projection of the light-transmitting opening on the driving backplane.

[0017] In one embodiment of the present invention, two adjacent filter units extend to be connected to each other, and the shading unit is arranged on a side of the filter unit away from the driving backplane and is located at the connection between the two filter units, and the orthographic projection of the shading unit on the driving backplane overlaps with the orthographic projections of filter units of different colors on the driving backplane.

[0018] In one embodiment of the present invention, the shading unit is disposed on a side of the first covering portion away from the driving back plate, the filter unit extends to a side of the shading unit away from the driving back plate, and two adjacent filter units of different colors are arranged at intervals.

[0019] In one embodiment of the present invention, the first covering portion includes a first covering unit, a second covering unit and a third covering unit that are arranged at intervals, the first covering unit is arranged between the second covering unit and the third covering unit, the slope angles of the sides of the first covering unit, the second covering unit and the third covering unit are less than 90 degrees, the first covering unit covers the first touch unit, the shading unit covers the first covering unit, the groove formed between the second covering unit and the first covering unit, and the groove formed between the third covering unit and the first covering unit, and two filtering units of different colors respectively cover the side of the second covering unit and the third covering unit away from the driving backplane.

[0020] In one embodiment of the present invention, the first covering portion includes a first covering unit, a second covering unit and a third covering unit that are arranged at intervals, the first covering unit is arranged between the second covering unit and the third covering unit, the slope angles of the sides of the first covering unit, the second covering unit and the third covering unit are less than 90 degrees, the first covering unit covers the first touch unit, two filter units of different colors respectively cover the second covering unit, the groove formed between the second covering unit and the first covering unit, the third covering unit and the groove formed between the third covering unit and the first covering unit, and the shading unit covers the first covering unit and the filter units of different colors in different grooves.

[0021] In one embodiment of the present invention, a protrusion is provided on one side of the first covering parts that are close to each other.

[0022] In one embodiment of the present invention, the protrusion extends from a side of the first covering portion close to the driving back plate to a side close to and away from the driving back plate, and a height of the protrusion is always the same in an extension direction of the side surface of the first covering portion.

[0023] In one embodiment of the present invention, a plurality of protrusions are distributed along the edge of the color-resist opening.

[0024] In one embodiment of the present invention, the outward extension distance between the edge of the first covering portion close to the driving backplane and the edge of the pixel defining portion close to the driving backplane is 0.5-2 μm.

[0025] In one embodiment of the present invention, the distance between the edge of the shading unit and the edge of the first covering portion away from the driving backplane is 1-3 μm.

[0026] In one embodiment of the present invention, the extension distance between the edge of the filter unit on one side close to the driving back plate and the edge of the filter unit on one side away from the driving back plate is 0-2 μm.

[0027] In one embodiment of the present invention, the display panel further comprises a second covering layer, and the second covering layer is arranged on a side of the filter layer away from the driving backplane.

[0028] In one embodiment of the present invention, the display panel further includes an encapsulation layer, and the encapsulation layer is disposed between the first touch electrode layer and the common electrode.

[0029] According to another aspect of the present invention, a display device is provided, comprising the display panel provided by one aspect of the present invention.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0032] Figure 1 It is a cross-sectional schematic diagram of a display panel involved in an embodiment of the present invention when only a color filter layer is provided on the light-emitting side of the light-emitting layer.

[0033] Figure 2 It is a cross-sectional schematic diagram of a display panel involved in an embodiment of the present invention when only a light path regulating layer is provided on the light emitting side of the light emitting layer.

[0034] Figure 3 It is a cross-sectional schematic diagram of a display panel involved in an embodiment of the present invention when a color filter layer and a light path regulating layer are sequentially arranged on the light emitting side of a light emitting layer.

[0035] Figure 4 A cross-sectional schematic diagram of a display panel according to an embodiment of the present invention when the shading unit is disposed between the passivation layer and the first covering portion.

[0036] Figure 5 Another cross-sectional schematic diagram of the display panel according to the embodiment of the present invention is shown when the shading unit is disposed between the passivation layer and the first covering portion.

[0037] Figure 6It is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention when the shading unit is disposed on a surface of the first covering portion away from the driving back plate, and the shading unit and the filter unit are disposed at intervals.

[0038] Figure 7 It is a schematic cross-sectional view of a display panel according to an embodiment of the present invention when the distances between the edges of different filter units close to a side of the driving backplane and the edges of different light-emitting units close to a side of the driving backplane are different.

[0039] Figure 8 It is a cross-sectional schematic diagram of a display panel involved in an embodiment of the present invention when the shading unit is arranged on a side of the filter unit away from the driving back plate and is located at the connection between two filter units.

[0040] Fig. 9 It is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention when the shading unit is disposed on a side of the first covering portion away from the driving back plate and the filter unit extends to a side of the shading unit away from the driving back plate.

[0041] Fig.10 A cross-sectional schematic diagram of the display panel involved in an embodiment of the present invention is when the shading unit covers the first covering unit, the groove formed between the second covering unit and the first covering unit, and the groove formed between the third covering unit and the first covering unit, and two filtering units of different colors respectively cover the second covering unit and the side of the third covering unit away from the driving backplane.

[0042] Fig.11 A cross-sectional schematic diagram of a display panel involved in an embodiment of the present invention when two filter units of different colors respectively cover the second covering unit, the groove formed between the second covering unit and the first covering unit, the third covering unit, and the groove formed between the third covering unit and the first covering unit, and the shading unit covers the first covering unit and the filter units of different colors in different grooves.

[0043] Fig.12 It is a schematic plan view of a pixel defining layer involved in an embodiment of the present invention when the orthographic projection of the light-transmitting opening on the driving backplane is located within the orthographic projection of the filter unit on the driving backplane.

[0044] Fig.13 It is a plan view schematic diagram of the light shielding layer involved in the embodiment of the present invention when the orthographic projection of the light-transmitting opening on the driving backplane is located within the orthographic projection of the filter unit on the driving backplane.

[0045] Fig.14 It is a schematic plan view of the first covering layer involved in an embodiment of the present invention when the orthographic projection of the light-transmitting opening on the driving backplane is located within the orthographic projection of the filter unit on the driving backplane.

[0046] Fig.15It is a schematic plan view of the filter layer involved in the embodiment of the present invention when the orthographic projection of the light-transmitting opening on the driving backplane is located within the orthographic projection of the filter unit on the driving backplane.

[0047] Fig.16 It is a schematic plan view of stacked layers of the display panel according to an embodiment of the present invention when the orthographic projection of the light-transmitting opening on the driving backplane is within the orthographic projection of the filter unit on the driving backplane.

[0048] Fig.17 It is a schematic plan view of the filter layer involved in the embodiment of the present invention when the orthographic projection of the filter unit on the driving backplane is located within the orthographic projection of the light-transmitting opening on the driving backplane.

[0049] Fig.18 It is a schematic plan view of stacked layers of the display panel according to an embodiment of the present invention when the orthographic projection of the filter unit on the driving backplane is within the orthographic projection of the light-transmitting opening on the driving backplane.

[0050] Fig.19 It is a plan view of the filter layer involved in the embodiment of the present invention when two adjacent filter units extend to be connected to each other and the shading unit is arranged on a side of the filter unit away from the driving back plate.

[0051] Fig. 20 It is a schematic plan view of stacked layers of the display panel according to an embodiment of the present invention when two adjacent filter units extend to be connected to each other and the shading unit is disposed on a side of the filter unit away from the driving backplane.

[0052] Fig.21 It is a schematic plan view of the first covering layer involved in an embodiment of the present invention when the edge of the orthographic projection of the light-transmitting opening on the driving backplane is located between the orthographic projection of the first covering unit on the driving backplane and the orthographic projection of the second covering unit on the driving backplane.

[0053] Fig. 22 A schematic plan view of stacked layers of the display panel according to an embodiment of the present invention when the edge of the orthographic projection of the light-transmitting opening on the driving backplane is located between the orthographic projection of the first covering unit on the driving backplane and the orthographic projection of the second covering unit on the driving backplane.

[0054] Description of reference numerals:

[0055] 10-driving backplane, 11-substrate substrate, 12-buffer layer;

[0056] 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;

[0057] 139 - a planarization layer group, 1391 - a first planarization layer, 1392 - a second planarization layer;

[0058] 15-pixel defining layer, 151-pixel opening;

[0059] 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;

[0060] 17-encapsulation layer, 171-first inorganic encapsulation layer, 172-organic encapsulation layer, 173-second inorganic encapsulation layer;

[0061] 18 - touch control layer, 181 - first touch electrode layer, 1811 - first touch unit, 182 - passivation layer, 183 - second touch electrode layer, 184 - touch insulation layer;

[0062] 19-color filter layer, 191-light shielding layer, 1911-light shielding unit, 1912-light-transmitting opening, 192-first covering layer, 1921-first covering portion, 1922-color blocking opening, 1923-first inclined surface, 1924-flat surface, 1925-second inclined surface, 1926-first covering unit, 1927-second covering unit, 1928-third covering unit, 1929-protrusion, 193-filtering unit, 1931-red filter unit, 1932-green filter unit, 1933-blue filter unit;

[0063] 20 - second covering layer, 21 - optical path regulating layer, 211 - low refractive index part, 212 - high refractive index layer. DETAILED DESCRIPTION

[0064] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale.

[0065] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0066] The terms "a", "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 express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0067] FMLOC (Flexible Multi-Layer On Cell) design is currently the mainstream in the field of OLED touch display. FMLOC design refers to making a metal electrode layer on the encapsulation layer of the display substrate. The surface of the metal electrode layer reflects the ambient light significantly. In order to improve the contrast of the display panel and reduce the reflected light, a polarizer is usually set on the light-emitting side of the light-emitting layer so that the display panel looks black when it is not bright. However, the polarizer will cause the light intensity of the display panel to attenuate.

[0068] like Figure 1 As shown, in order to reduce the reflection of ambient light and improve the contrast, a color filter layer 19 is set on the side of the light-emitting layer 16 away from the driving backplane 10 to replace the polarizer. The color filter layer 19 is still set on the side of the encapsulation layer 17 away from the driving backplane 10. The color filter layer 19 includes a black matrix and a filter unit 193, which absorbs most of the ambient light through the black matrix, and the light emitted from the light-emitting unit 162 is directly emitted from the filter unit 193, thereby improving the light output efficiency of the display panel. Compared with the display panel with anti-glare through the polarizer, the display panel in the figure has a power consumption benefit of 25-30%, but the reflectivity will be 0.8-1% higher.

[0069] like Figure 2As shown, in order to reduce the reflection of ambient light and improve the contrast, an optical path regulating layer 21 is provided on the side of the light emitting layer 16 away from the base substrate 11 to replace the polarizer. The optical path regulating 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 portion 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 base substrate 11. The high refractive index layer 212 covers the side of the low refractive index portion 211 away from the base substrate 11 and the gaps between adjacent low refractive index portions 211. The emitted light of the light emitting unit 162 is emitted after being totally reflected at the interface between the high refractive index layer 212 and the low refractive index portion 211, thereby improving the light extraction efficiency of the display panel. The display panel in the figure has a power consumption benefit of 5-10% compared to a display panel with anti-glare through a polarizer, but the internal stress of the high refractive index layer 212 is relatively large, and black spots (Growing Dark Spot at HIAA, GDSH) are easily formed at the edge of the hole in the gap between adjacent low refractive index parts 211.

[0070] like Figure 3 As shown, a color filter layer 19 and an optical path control layer 21 can be sequentially arranged on the side of the encapsulation layer 17 away from the base substrate 11 to improve the light extraction efficiency of the display panel. Compared with the display panel with anti-glare through a polarizer, the display panel in the figure has a power consumption benefit of 37%, but the reflectivity is 0.6% higher than the display panel with only the color filter layer 19 in the figure.

[0071] Since the color filter layer 19 and / or the light path regulating layer 21 are arranged on the side of the light emitting layer 16 away from the base substrate 11, the thickness of the display panel is relatively large, which is not conducive to the thinness of the display panel. In addition, in the process of forming the color filter layer 19 and / or the light path regulating layer 21, one or two more mask processes need to be added, so two more mask plates are required, resulting in a large loss of production capacity of the display panel.

[0072] Based on this, an embodiment of the present invention provides a display panel. Figures 4 to 22As shown, the display panel includes a driving backplane 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 covering layer 192, a filter layer and a light shielding layer 191, the pixel defining layer 15 is arranged on one side of the driving backplane 10, the pixel defining layer 15 includes a plurality of pixel defining parts, and a pixel opening 151 is formed between the sides of the pixel defining parts close to each other; the plurality of pixel electrodes 161 are respectively arranged in different pixel openings 151; the plurality of light-emitting units 162 of different colors are The pixel electrodes 162 are respectively arranged on a side of each pixel electrode 161 away from the driving backplane 10; the common electrode 163 is arranged on a side of the plurality of light-emitting units 162 away from the driving backplane 10; the first touch electrode layer is arranged on a side of the common electrode 163 away from the driving backplane 10, and the first touch electrode layer includes a plurality of first touch units 1811, and the plurality of first touch units 1811 are arranged at intervals; the first covering layer 192 includes a plurality of first covering portions 1921, and the first covering portions 1921 are arranged on a side of the first touch unit 1811 away from the base substrate 11, and the first A color-resistance opening 1922 is formed between the sides of the covering portions 1921 that are close to each other, and the slope angle of the side surface of the first covering portion 1921 is less than 90 degrees; the filter layer includes filter units 193 of different colors, each filter unit 193 is respectively arranged in a different color-resistance opening 1922, and the filter unit 193 covers the side surface of the first covering portion 1921, and the orthographic projection of the filter unit 193 on the base substrate 11 covers the orthographic projection of the light-emitting unit 162 on the base substrate 11, and the refractive index of the filter unit 193 is greater than the refractive index of the first covering portion 1921. The light-shielding layer 191 includes a plurality of light-shielding units 1911. The light-shielding unit 1911 is disposed between the first touch-sensing unit 1811 and the first covering portion 1921, or disposed on a side of the first covering portion 1921 away from the base substrate 11. The light-shielding unit 1911 covers the orthographic projection of the first touch-sensing unit 1811 on the base substrate 11. A light-transmitting opening 1912 is formed between the sides of the light-shielding units 1911 that are close to each other. The orthographic projection of the color-resist opening 1922 on the base substrate 11 is located within the orthographic projection of the light-transmitting opening 1912 on the base substrate 11.

[0073] The first covering portion 1921 is disposed on a side of the first touch unit 1811 away from the base substrate 11. The first covering portion 1921 can be used to insulate the first touch unit 1811. A color resistance opening 1922 is formed between two adjacent first covering portions 1921. The filter units 193 are respectively disposed in different color resistance openings 1922. The filter units 193 cover the side surfaces of the first covering portions 1921. The refractive index of the filter units 193 is greater than the refractive index of the first covering portion 1921. Therefore, the outgoing light of the light-emitting unit 162 at an oblique angle can generate total reflection at the interface between the side surfaces of the first covering portion 1921 and the filter units 193, and the outgoing light at an oblique angle is deflected to be emitted in the direction of a normal angle, thereby improving the light output efficiency of the display panel at a normal angle. Therefore, there is no need to separately set an optical path control layer, thereby reducing the thickness of the display panel, and facilitating the thinning of the display panel.

[0074] The display panel involved in the implementation manner of the present invention is described in detail below with reference to specific embodiments.

[0075] like Figure 4 As shown, the display panel may generally include a base substrate 11 and a driving circuit layer 13 , wherein the driving circuit layer 13 is disposed on one side of the base substrate 11 . The display panel may further include a buffer layer 12 , wherein the buffer layer 12 is disposed between the base substrate 11 and the driving circuit layer 13 .

[0076] The substrate 11 may be an inorganic substrate 11 or an organic substrate 11. For example, in one embodiment of the present invention, the substrate 11 may be made of glass materials such as soda-lime glass, quartz glass, sapphire glass, or may be made of metal materials such as stainless steel, aluminum, and nickel.

[0077] In another embodiment of the present invention, the substrate 11 may also be a flexible substrate 11, for example, the substrate 11 may be made of polyimide (PI). The substrate 11 may also be a composite of multiple layers of materials, for example, in one embodiment of the present invention, the substrate 11 may include a bottom film layer (Bottom Film), a pressure-sensitive adhesive layer, a first polyimide layer, and a second polyimide layer stacked in sequence.

[0078] 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 driving circuit may include a transistor, which may be a thin film transistor, which may be selected from a top-gate thin film transistor, a bottom-gate thin film transistor, or a dual-gate thin film transistor; taking a top-gate thin film transistor as an example, the driving circuit layer 13 may 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, which are sequentially arranged in a direction away from the base substrate 11, wherein:

[0079] The first active layer 131 is disposed on one side of the base substrate 11. The material of the first active layer 131 may be an amorphous silicon semiconductor material, a low-temperature polysilicon semiconductor material, a metal oxide semiconductor material, an organic semiconductor material or other types of semiconductor materials, so the thin film transistor may be an N-type thin film transistor or a P-type thin film transistor. The first active layer 131 may include a channel region and two doping regions of different doping types located on both sides of the channel region.

[0080] The first gate insulating layer 1321 is disposed on a side of the active layer 131 away from the substrate 11, and the first gate insulating layer 1321 may cover the active layer 131 and the substrate 11. The first gate layer may include a first gate 1331, and the first gate 1331 is disposed on a side of the first gate insulating layer 1321 away from the substrate 11 and directly opposite to the active layer 131, that is, the projection of the first gate 1331 on the substrate substrate 11 is located within the projection range of the active layer 131 on the substrate substrate 11, for example, the projection of the first gate 1331 on the substrate substrate 11 coincides with the projection of the channel region of the active layer 131 on the substrate substrate 11. The second gate insulating layer 1322 is disposed on a side of the first gate 1331 away from the substrate 11, the second gate insulating layer 1322 may cover the first gate 1331 and the first gate insulating layer 1321, the second gate layer may include a second gate 1332, the second gate 1332 is disposed on a side of the second gate insulating layer 1322 away from the substrate 11, and directly faces 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.

[0081] The thin film transistor may further include an interlayer dielectric layer 134, which is disposed on a side of the second gate electrode 1332 away from the base substrate 11, and the interlayer dielectric layer 134 may cover the second gate electrode 1332 and the second gate insulating layer 1322. A first source-drain metal layer is disposed on a surface of the interlayer dielectric layer 134 away from the base substrate 11, and the first source-drain metal layer may include a first source electrode 135 and a drain electrode 136, which are connected to the first active layer 131, for example, the first source electrode 135 and the drain electrode 136 are respectively connected to the two doping regions of the corresponding first active layer 131 through vias. A protective layer 137 may also be disposed on a side of the first source electrode 135 away from the base substrate 11, and the protective layer 137 covers the first source electrode 135 and the drain electrode 136. The driving circuit layer 13 may further include a planarization layer group 139 . The planarization layer group 139 includes a first planarization layer 1391 . The first planarization layer 1391 is disposed on a side of the protection layer 137 away from the base substrate 11 . The first planarization layer 1391 covers the protection layer 137 .

[0082] The driving circuit layer 13 may further include a second source-drain metal layer, which is disposed on a side of the first planarization layer 1391 away from the base substrate 11. The second source-drain metal layer may include a second source electrode 138, which is connected to the first source electrode 135. The planarization layer group 139 may further include a second planarization layer 1392, which is disposed on a side of the second source electrode 138 away from the base substrate 11, and the second planarization layer 1392 covers the second source electrode 138 and the first planarization layer 1391.

[0083] The display panel may further include a pixel defining layer 15 and a light emitting layer 16. The pixel defining layer 15 is disposed on a side of the first planarization layer 1391 or the second planarization layer 1392 away from the array substrate. The pixel defining layer 15 includes a plurality of pixel defining portions, and a pixel opening 151 is formed between two adjacent pixel defining portions. The light emitting layer 16 may include a plurality of light emitting units 162, and the plurality of light emitting units 162 are respectively disposed in different pixel openings 151. Each light emitting unit 162 may include a pixel electrode 161, a light emitting unit 162, and a common electrode 163. The pixel electrode 161 is located on a surface of the first planarization layer 1391 or the second planarization layer 1392 away from the base substrate 11, the light emitting unit 162 is disposed on a surface of the pixel electrode 161 away from the base substrate 11, and the common electrode 163 is disposed on a surface of the light emitting unit 162 away from the base substrate 11. The light emitting unit 162 may be driven to emit light through the pixel electrode 161 and the common electrode 163 to display an image.

[0084] The pixel electrode 161 is connected to the first source electrode 135 or the second source electrode 138. A pixel defining layer 15 is provided on the side of the pixel electrode 161 away from the base substrate 11. When the thin film transistor only includes the first source electrode 135, the pixel electrode 161 is connected to the first source electrode 135, and the pixel defining layer 15 covers the pixel electrode 161 and the first planarization layer 1391. When the thin film transistor also includes the second source electrode 138, the pixel electrode 161 is connected to the second source electrode 138, and the pixel defining layer 15 covers the pixel electrode 161 and the second planarization layer 1392.

[0085] The common electrode 163 can be used as a cathode, and the pixel electrode 161 can be used as an anode. The light-emitting unit 162 can be driven to emit light by applying a signal to the pixel electrode 161. The specific light-emitting principle will not be described in detail here. The light-emitting unit 162 may include an electro-induced organic light-emitting material and may be formed by a process such as evaporation. For example, the light-emitting unit 162 may include a hole injection layer, a hole transport layer, a light generating layer, an electron transport layer, and an electron injection layer sequentially stacked on the pixel electrode 161. It should be noted that the light-emitting unit 162 may include a red light-emitting unit 1621, a green light-emitting unit 1622, and a blue light-emitting unit 1623, depending on the color of the light emitted.

[0086] In addition, the display panel of the present invention may further include an encapsulation layer 17, which is disposed on a side of the light-emitting layer 16 away from the base substrate 11, thereby encapsulating the light-emitting layer 16 to prevent water and oxygen corrosion. The encapsulation layer 17 may be a single-layer or multi-layer structure, and the material of the encapsulation layer 17 may include organic or inorganic materials, which are not particularly limited here.

[0087] In this embodiment, the encapsulation layer 17 may 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 arranged on the side of the light-emitting layer 16 away from the base substrate 11, the organic encapsulation layer 172 is arranged on the side of the first inorganic encapsulation layer 171 away from the base substrate 11, and the second inorganic encapsulation layer 173 is arranged on the side of the organic encapsulation layer 172 away from the base substrate 11.

[0088] like Figure 4As shown, the display panel further includes a touch control layer 18, which may be a mutual capacitive touch control, and may include a first touch electrode layer 181 and a passivation layer 182, wherein the first touch electrode layer 181 is disposed on a side of the encapsulation layer 17 away from the base substrate 11, and the passivation layer 182 is disposed on a side of the first touch electrode layer 181 away from the base substrate 11. The first touch electrode layer may include a plurality of first touch units 1811, wherein the plurality of first touch units 1811 are arranged at intervals, and the orthographic projection of the first touch unit 1811 on the base substrate 11 is located between the orthographic projections of two adjacent light emitting units 162 on the base substrate 11, and the passivation layer covers the plurality of first touch units 1811. The touch control layer 18 may further include a second touch electrode layer 183 and a touch insulating layer 184, wherein the second touch electrode layer 183 is disposed between the encapsulation layer 17 and the first touch electrode layer 181, and the touch insulating layer 184 is disposed between the second touch electrode layer 183 and the first touch electrode layer 181. The first touch electrode layer 181 may be a metal mesh layer (MM), and the second touch electrode layer 183 may be a bridge metal layer (BM). The first touch electrode layer 181 may also be a bridge metal layer, and the second touch electrode layer 183 may be a metal mesh layer.

[0089] The display panel may further include a light shielding layer 191, the light shielding layer 191 includes a plurality of light shielding units 1911, the light shielding units 1911 are arranged on a side of the passivation layer away from the base substrate 11, the orthographic projection of the light shielding units 1911 on the base substrate 11 covers the orthographic projection of the first touch control unit 1811 on the base substrate 11, that is, the orthographic projection of the first touch control unit 1811 on the base substrate 11 is located within the orthographic projection of the light shielding units 1911 on the base substrate 11, and the orthographic projection area of ​​the first touch control unit 1811 on the base substrate 11 is smaller than the orthographic projection area of ​​the light shielding units 1911 on the base substrate 11. A light-transmitting opening 1912 is formed between the sides of the light shielding units 1911 that are close to each other.

[0090] like Figure 4 and Figure 5 As shown, the display panel may further include a first covering layer 192, the first covering layer 192 includes a plurality of first covering portions 1921, the first covering portion 1921 is disposed on a side of the light shielding unit 1911 away from the base substrate 11, the first covering portion 1921 covers the light shielding unit 1911, a color resistance opening 1922 is formed between two adjacent first covering portions 1921, and the orthographic projection of the color resistance opening 1922 on the base substrate 11 is located within the orthographic projection of the light transmission opening 1912 on the base substrate 11. In this embodiment, the thickness of the first covering portion 1921 may be 1.5-2.5 μm.

[0091] Because the first covering portion 1921 covers the shading unit 1911, the width and thickness of the shading unit 1911 are relatively large, and thus a step surface is formed on the side of the first covering portion 1921. Specifically, the side of the first covering portion 1921 includes a first inclined surface 1923, a straight surface 1924 and a second inclined surface 1925. The slope angle of the first inclined surface 1923 is 30-50 degrees. The straight surface 1924 is arranged at one end of the first inclined surface 1923 away from the base substrate 11, and the straight surface 1924 is parallel to the surface of the base substrate 11. The second inclined surface 1925 is arranged at one end of the straight surface 1924 away from the first inclined surface 1923, and the slope angle of the second inclined surface 1925 is 45-75 degrees.

[0092] The display panel also includes a filter layer, which includes filter units 193 of different colors. The filter units 193 of different colors include a red filter unit 1931, a green filter unit 1932 and a blue filter unit 1933. The orthographic projection of the red filter unit 1931 on the base substrate 11 covers the orthographic projection of the red light-emitting unit 1621 on the base substrate 11, the orthographic projection of the green filter unit 1932 on the base substrate 11 covers the orthographic projection of the green light-emitting unit 1622 on the base substrate 11, and the orthographic projection of the blue filter unit 1933 on the base substrate 11 covers the orthographic projection of the blue light-emitting unit 1623 on the base substrate 11.

[0093] The first covering portion 1921 is made of a resin material with a low refractive index of 1.45-1.5, the refractive index of the red filter unit can generally be 1.65-1.85, and the refractive index of the green filter unit and the refractive index of the blue filter unit can generally be 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 blue filter unit 1933 is 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 portion 1921, so the outgoing light of the oblique angle can be totally reflected on the side of the first covering portion 1921, deflected to the direction of the normal angle, and the light output efficiency of the normal angle is improved. Among them, the outgoing light with a smaller outgoing angle can be totally reflected at the interface between the first inclined surface 1923 and the filter unit 193, and the outgoing light with a larger outgoing angle can be totally reflected at the interface between the second inclined surface 1925 and the filter unit 193.

[0094] The display panel may further include a second covering layer 20 , which covers the side of the filter unit 193 and the light shielding unit 1911 away from the base substrate 11 , and a gap formed between the filter unit 193 and the light shielding unit 1911 .

[0095] like Figure 6 As shown, Figure 5The difference is that the first covering portion 1921 is arranged on the side of the first touch unit 1811 away from the base substrate 11, and the first covering portion 1921 covers the first touch unit 1811. Because the width and thickness of the first touch unit 1811 are small, the side of the first covering portion 1921 is an inclined surface, and the slope angle of the side of the first covering layer 192 is 55-85 degrees. The distance between the edge of the first covering portion 1921 close to the base substrate 11 and the edge of the pixel definition portion close to the base substrate 11 is 0.5-2μm.

[0096] The filter unit 193 is arranged in the color resistance opening 1922 formed by two adjacent first covering parts 1921. The thickness of the filter unit 193 is greater than the thickness of the first covering part 1921. The filter unit 193 covers the side of the first covering part 1921 and the shading unit 1911 is arranged in a partial area on the side of the first covering part 1921 away from the base substrate 11. The part of the first covering part 1921 that is not overlapped with the filter unit 193 is an exposed area. The shading unit 1911 is arranged in the exposed area. The thickness of the shading unit 1911 can be 1-2μm. The orthographic projection of the filter unit 193 on the base substrate 11 is located within the orthographic projection of the light-transmitting opening 1912 on the base substrate 11. The distance between the edge of the filter unit 193 and the edge of the first covering part 1921 away from the base substrate 11 is 1-3μm. The distance between the light shielding unit 1911 and the light filtering unit 193 is greater than 0. In the present embodiment, the distance between the light shielding unit 1911 and the light filtering unit 193 is preferably 1-2 μm.

[0097] Compared to Figure 5 The display panel in the first place, Figure 6 The display panel in the embodiment uses the first covering portion 1921 to insulate the first touch unit 1811, eliminating the passivation layer, and further reducing the thickness of the display panel. In addition, during the production process of the display panel, a mask plate for making the passivation layer is reduced, which reduces the production cost of the display panel. Compared with the method of replacing the polarizer with a color film, there is no loss of production capacity. Secondly, the shape of the first covering portion 1921 is a trapezoid, and its side is a conventional inclined plane, and the slope angle is easier to control.

[0098] Furthermore, Figure 6 The depth of the middle color resistance opening 1922 is less than Figure 5 The depth of the color-resistance opening 1922 in the display device 190 is determined by the thickness of the first covering portion 1921, and the light filtering unit 193 is spaced apart from the light-shielding unit 1911. The thickness of the light filtering unit 193 is only affected by the thickness of the first covering portion 1921 and is not limited by the thickness of the light-shielding unit 1911. Therefore, the thickness of the light filtering unit 193 is less restricted, which is more conducive to flexibly adjusting the light output efficiency and dark-state hue of the display panel.

[0099] Because the center of the filter 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 filter units 193 of different colors away from the substrate substrate 11 and the edges of the light-emitting units 162 of different colors close to the substrate substrate 11 are equal, and the distance between the edge of the red filter unit 1931 away from the substrate substrate 11 and the edge of the red light-emitting unit 1621 close to the substrate substrate 11 is defined as the first total distance, the distance between the edge of the green filter unit 1932 away from the substrate substrate 11 and the edge of the green light-emitting unit 1622 close to the substrate substrate 11 is defined as the second total distance, and the distance between the edge of the blue filter unit 1933 away from the substrate substrate 11 and the edge of the blue light-emitting unit 1623 close to the substrate substrate 11 is defined as the third total distance, and the first total distance, the second total distance and the third total distance are equal.

[0100] The distance between the edge of the red filter unit 1931 close to the substrate 11 and the edge of the red light-emitting unit 1621 close to the substrate 11 is the first outward expansion distance a1, the distance between the edge of the green filter unit 1932 close to the substrate 11 and the edge of the green light-emitting unit 1622 close to the substrate 11 is the second outward expansion distance a2, and the distance between the edge of the blue filter unit 1933 close to the substrate 11 and the edge of the blue light-emitting unit 1623 close to the substrate 11 is the third outward expansion distance a3. The distance between the edge of the red filter unit 1931 close to the substrate 11 and the edge of the red filter unit 1931 away from the substrate 11 is the first extension distance b1, the distance between the edge of the green filter unit 1932 close to the substrate 11 and the edge of the green filter unit 1932 away from the substrate 11 is the second extension distance b2, and the distance between the edge of the blue filter unit 1933 close to the substrate 11 and the edge of the blue filter unit 1933 away from the substrate 11 is the third extension distance b3. The first total distance is equal to the sum of the first outward extension distance a1 and the first extension distance b1, the second total distance is equal to the sum of the second outward extension distance a2 and the second extension distance b2, and the third total distance is equal to the sum of the third outward extension distance a3 and the third extension distance b3.

[0101] like Figure 7 As shown, compared Figure 6In the display panel, since the refractive indexes of different filter units 193 are different, in order to balance the light extraction efficiency of the red filter unit 1931, the green filter unit 1932 and the blue filter unit 1933, the first expansion distance a1, the second expansion distance a2 and the third expansion distance a3 are adjusted. The larger the refractive index of the filter unit 193, the larger the expansion distance of the edge of the filter unit 193 close to the base substrate 11 relative to the edge of the light emitting unit 162 close to the base substrate 11. 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 expansion distance is greater than the second expansion distance a2 and the third expansion distance a3.

[0102] The color-resist opening 1922 of the red filter unit 1931 is defined as a first color-resist opening 1922, the color-resist opening 1922 of the green filter unit 1932 is defined as a second color-resist opening 1922, and the color-resist opening 1922 of the blue filter unit 1933 is defined as a third color-resist opening 1922. The width of the orthographic projection of the side surface of the first color-resist opening 1922 on the base substrate 11 is defined as a first covering distance, the width of the orthographic projection of the side surface of the second color-resist opening 1922 on the base substrate 11 is defined as a second covering distance, and the width of the orthographic projection of the side surface of the third color-resist opening 1922 on the base substrate 11 is defined as a third covering distance. The width of the red filter unit 1931 covering the side of the first covering portion 1921 away from the base substrate 11 is defined as the first overlap distance c1, the width of the green filter unit 1932 covering the side of the first covering portion 1921 away from the base substrate 11 is defined as the second overlap distance c2, and the width of the blue filter unit 1933 covering the side of the first covering portion 1921 away from the base substrate 11 is defined as the third overlap distance c3.

[0103] According to the refractive index of the different filter units 193 above, the first outward expansion distance a1 is 1-3μm, the second outward expansion distance a2 is 0-2μm, the third outward expansion distance a3 is 0-2μm, the first extension distance b1, the second extension distance b2, and the third extension distance b3 are 1.5-5μm, the first overlap distance c1, the second overlap distance c2, and the third overlap distance c3 are 0-3.5μm, the distance d1 between the red filter unit 1931 and the adjacent shading unit 1911, the distance d2 between the green filter unit 1932 and the adjacent shading unit 1911, and the distance between the blue filter unit 1933 and the adjacent shading unit d3 are 0-3μm. In this embodiment, the first outward expansion distance a1 is 1.5 μm, the second outward expansion distance a2 is 0.5 μm, the third outward 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 covering distance, the second covering distance and the third covering distance are equal, the first covering distance is 1.5 μm, the second covering distance is 1.5 μm, and the third covering 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 shading unit 1911 is 1 μm, the distance d2 between the green filter unit 1932 and the adjacent shading unit 1911 is 1 μm, and the distance between the blue filter unit 1933 and the adjacent shading unit d3 is 1 μm.

[0104] In other feasible 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 may 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 expansion distance a1, the second expansion distance a2, and the third expansion distance are equal, that is, the ratio of the first expansion distance a1, the second expansion distance a2, and the third expansion distance a3 is 1:1:1.

[0105] like Figure 8 As shown, compared to Figure 6In the display panel, the filter unit 193 extends from the side of the first covering portion 1921 to the side of the first covering portion 1921 away from the base substrate 11, and two adjacent filter units 193 are connected to each other, the red filter unit 1931 is connected to the green filter unit 1932, the green filter unit 1932 is connected to the blue filter unit 1933, and the sides of the red filter unit 1931, the green filter unit 1932 and the blue filter unit 1933 away from the base substrate 11 are located in the same horizontal plane. The shading unit 1911 is provided on the side of the filter unit 193 away from the base substrate 11, at the connection between the two filter units 193, and the orthographic projection of the shading unit 1911 on the base substrate 11 overlaps with the orthographic projections of the filter units 193 of different colors on the base substrate 11. Figure 8 When the display panel is manufactured, the process accuracy requirement of the filter unit 193 is relatively low.

[0106] like Fig. 9 As shown, compared to Figure 6 In the display panel, the filter unit 193 extends from the side of the first covering portion 1921 to the side of the first covering portion 1921 away from the base substrate 11, and extends to the side of the shading unit 1911 away from the base substrate 11. The side of the red filter unit 1931 away from the base substrate 11, the side of the green filter unit 1932 away from the base substrate 11, and the side of the blue filter unit 1933 away from the base substrate 11 can be located in the same plane, or the thickness of the red filter unit 1931, the green filter unit 1932 and the blue filter unit 1933 can be set to be different, that is, the side of the red filter unit 1931 away from the base substrate 11, the side of the green filter unit 1932 away from the base substrate 11, and the side of the blue filter unit 1933 away from the base substrate 11 are located in different planes.

[0107] Relative to Figure 6 For the display panel, there is no need to consider the width ratio of the shading unit 1911 and the adjacent two different color filter units 193 on the first covering portion 1921. It is only necessary to set the adjacent different color filter units 193 at intervals. Therefore, the process precision required for the filter unit 193 and the shading unit 1911 is relatively low.

[0108] like Fig.10As shown, the first covering portion 1921 includes a first covering unit 1926, a second covering unit 1927 and a 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 angles of the sides of the first covering unit 1926, the second covering unit 1927 and the third covering unit 1928 are less than 90 degrees. The first covering unit 1926 covers the first touch unit 1811. The shading unit 1911 covers the first covering unit 1926, the grooves formed between the second covering unit 1927 and the first covering unit 1926, and the grooves formed between the third covering unit 1928 and the first covering unit 1926. The two filtering units 193 of different colors respectively cover the side of the second covering unit 1927 and the third covering unit 1928 away from the base substrate 11.

[0109] like Fig.10 As shown, 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, 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.

[0110] Compared to Figure 6 The display panel in Fig.10 The two sides of the shading unit 1911 of the middle display panel are sunken, and the distance between the shading unit 1911 and the light emitting unit 162 is reduced, which is beneficial to improving the brightness attenuation of the display panel at an oblique viewing angle.

[0111] like Fig.11 As shown, Fig.10 The difference lies in that the first covering unit 1926 covers the first touch unit 1811, and the two filter units 193 of different colors respectively 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, and the shading unit 1911 covers the first covering unit 1926 and the filter units 193 of different colors in different grooves.

[0112] like Fig.11As shown, the red filter unit 1931 covers the third covering unit 1928 of the first first covering portion 1921 and the second covering unit 1927 of the second first covering portion 1921, the groove between the third covering unit 1928 of the first first covering portion 1921 and the first covering unit 1926, and the groove between the second covering unit 1927 of the second first covering portion 1921 and the first covering unit 1926, and the green filter unit 1932 covers the third covering unit 1928 of the second first covering portion 1921 and the second covering unit 1927 of the third first covering portion 1921, and the second first covering portion 1921. 1, a groove between the third covering unit 1928 and the first covering unit 1926 of the third first covering portion 1921, a groove between the second covering unit 1927 and the first covering unit 1926 of the third first covering portion 1921, a blue filter unit 1933 covers the third covering unit 1928 of the third first covering portion 1921 and the second covering unit 1927 of the fourth first covering portion 1921, a groove between the third covering unit 1928 and the first covering unit 1926 of the third first covering portion 1921, a groove between the second covering unit 1927 and the first covering unit 1926 of the fourth first covering portion 1921, and so on.

[0113] It should be noted that, in order to simplify the drawings, Figure 4 outside, Figures 5 to 11 The second touch electrode layer 183 and the touch insulating layer 184 are omitted. Figures 6 to 11 The first covering layer 192 is reused as the passivation layer 182 , and the first covering layer 192 plays the same role as the passivation layer 182 , so there is no need to set up the passivation layer 182 additionally.

[0114] The structure of the display panel is further described with reference to the plan view of the pixel defining layer 15 , the first covering layer 192 , the light shielding layer 191 and the filter layer.

[0115] Fig.16 For Figure 4 , Figure 5 and Fig. 9 The schematic diagram of the plan view of the stacked display panel layers is shown in FIG. Figures 12 to 15 For Figure 4 , Figure 5 and Fig. 9The top view of each layer of the display panel shown. The shape of the pixel opening 151, the shape of the color resist opening 1922, the shape of the light-transmitting opening 1912 and the shape of the filter unit 193 are similar. In this embodiment, the shape of the pixel opening 151, the shape of the color resist opening 1922 and the shape of the light-transmitting opening 1912 can be circular, the orthographic projection of the pixel opening 151 on the base substrate 11 is located within the orthographic projection of the color resist opening 1922 on the base substrate 11, the orthographic projection of the color resist opening 1922 on the base substrate 11 is located within the orthographic projection of the light-transmitting opening 1912 on the base substrate 11, the shape of the filter unit 193 is also circular, and the edge of the orthographic projection of the filter unit 193 on the base substrate 11 is located at the periphery of the edge of the orthographic projection of the light-transmitting opening 1912 on the base substrate 11. It should be noted that the circle is only an exemplary description of the shape of the pixel opening 151, the shape of the color resist opening 1922, the shape of the light-transmitting opening 1912 and the shape of the filter unit 193, and it can also be set to other shapes as needed, which is not specifically limited here.

[0116] Fig.18 For Figure 6 and Figure 7 The schematic plan view of the stacked layers of the display panel shown in FIG. Fig.17 For Figure 6 and Figure 7 The plane diagram of the filter layer of the display panel is shown in FIG. Figure 12 to Figure 14 The shapes of the pixel opening 151, the color-resist opening 1922, the light-transmitting opening 1912 and the filter unit 193 are similar. In the present embodiment, the shapes of the pixel opening 151, the color-resist opening 1922 and the light-transmitting opening 1912 may be circular. The orthographic projection of the pixel opening 151 on the base substrate 11 is located within the orthographic projection of the color-resist opening 1922 on the base substrate 11. The orthographic projection of the color-resist opening 1922 on the base substrate 11 is located within the orthographic projection of the light-transmitting opening 1912 on the base substrate 11. The edge of the orthographic projection of the filter unit 193 on the base substrate 11 is located between the edge of the orthographic projection of the color-resist opening 1922 on the base substrate 11 and the edge of the orthographic projection of the light-transmitting opening 1912 on the base substrate 11.

[0117] Fig. 20 For Figure 8 The schematic plan view of the stacked layers of the display panel shown in FIG. Fig.19 For Figure 8 The plane diagram of the filter layer of the display panel is shown in FIG. Figure 12 to Figure 14The shapes of the pixel opening 151, the color-resistance opening 1922, and the light-transmitting opening 1912 are similar. In the present embodiment, the shapes of the pixel opening 151, the color-resistance opening 1922, and the light-transmitting opening 1912 may be circular. The orthographic projection of the pixel opening 151 on the base substrate 11 is located within the orthographic projection of the color-resistance opening 1922 on the base substrate 11. The orthographic projection of the color-resistance opening 1922 on the base substrate 11 is located within the orthographic projection of the light-transmitting opening 1912 on the base substrate 11. The edge of the orthographic projection of the filter unit 193 on the base substrate 11 is located at the periphery of the edge of the orthographic projection of the light-transmitting opening 1912 on the base substrate 11. Fig.17 and Fig.18 The difference is that in order to ensure that two adjacent different color filter units 193 are connected to each other, it is necessary to expand the coverage of the filter unit 193, such as Fig.19 and Fig. 20 As shown, the coverage of the red filter unit 1931 can be expanded until it is interconnected with 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 different color filter units 193 can be connected to each other, but it is better to change only the coverage of one filter unit 193, and only one mask plate and one mask plate process need to be changed, and the process cost is low.

[0118] Fig. 22 For Fig.10 The schematic plan view of the stacked layers of the display panel shown in FIG. Fig.21 For Fig.10 The schematic plan view of the first covering layer of the display panel is shown in FIG. Fig.12 , Fig.13 and Fig.15The shapes of the pixel opening 151, the color-resistance opening 1922, the light-transmitting opening 1912 and the filter unit 193 are similar. In the present embodiment, the shapes of the pixel opening 151, the color-resistance opening 1922 and the light-transmitting opening 1912 can be circular. The orthographic projection of the pixel opening 151 on the base substrate 11 is located within the orthographic projection of the color-resistance opening 1922 on the base substrate 11. The orthographic projections of the filter units 193 of different colors on the base substrate 11 are located between the inner edge and the outer edge of the orthographic projections of the second covering unit 1927 and the third covering unit 1928 on the base substrate 11. The orthographic projection of the second covering unit 1927 on the base substrate 11 is located between the orthographic projection of the second covering unit 1927 and the orthographic projection of the third covering unit 1928 on the base substrate 11, the edge of the orthographic projection of one light-transmitting opening 1912 on the base substrate 11 is located between the orthographic projection of the first covering unit 1926 on the base substrate 11 and the orthographic projection of the second covering unit 1927 on the base substrate 11, and the edge of the orthographic projection of another light-transmitting opening 1912 on the base substrate 11 is located between the orthographic projection of the first covering unit 1926 on the base substrate 11 and the orthographic projection of the third covering unit 1928 on the base substrate 11.

[0119] In the above embodiment, a protrusion 1929 is provided on the side of the first covering portion 1921 that is close to each other. The setting of the protrusion 1929 can increase the area of ​​the interface between the side of the first covering portion 1921 and the filter unit 193, thereby increasing the probability of total reflection of the emitted light. The protrusion 1929 extends from the side of the first covering portion 1921 that is close to the base substrate 11 to the side that is close to and away from the base substrate 11. The protruding height of the protrusion 1929 is always equal in the extension direction of the side of the first covering portion 1921, thereby ensuring the reflection uniformity in the thickness direction of the first covering portion 1921. A plurality of protrusions 1929 are distributed along the edge of the color resistance opening 1922, thereby ensuring the reflection uniformity in the extension direction of the contour of the color resistance opening 1922.

[0120] The embodiment of the present invention further provides a display device, which may include the display panel of any one of the above embodiments of the present invention. The specific structure and beneficial effects of the display panel have been described in detail above, so they will not be repeated here.

[0121] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Those skilled in the art may make corresponding supplements according to the specific use requirements of the display device, which will not be repeated here.

[0122] The display device may also be an emerging wearable device, such as a virtual reality device and an augmented reality device, or a traditional electronic device, such as a mobile phone, a computer, a television, and a camcorder, which are not listed here one by one.

[0123] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention invented herein. This application is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: Driver backplane; A pixel definition layer is provided on one side of the driving backplane, the pixel definition layer comprises a plurality of pixel definition parts, and a pixel opening is formed between the sides of the pixel definition parts close to each other; A plurality of pixel electrodes are respectively arranged in different pixel openings; A plurality of light-emitting units of different colors are respectively arranged on a side of each pixel electrode away from the driving backplane; A common electrode, disposed on a side of the plurality of light-emitting units away from the driving backplane; A first touch control electrode layer is provided on a side of the common electrode away from the driving backplane, the first touch control electrode layer comprises a plurality of first touch control units, and the plurality of first touch control units are arranged at intervals; A first covering layer, comprising a plurality of first covering parts, wherein the first covering parts are arranged on a side of the first touch control unit away from the driving backplane, a color resistance opening is formed between the sides of the first covering parts that are close to each other, and a slope angle of a side surface of the first covering part is less than 90 degrees; A filter layer, comprising filter units of different colors, each of the filter units is respectively arranged in a different color-resistance opening, the filter units cover the side surfaces of the first covering portion, the orthographic projection of the filter units on the driving backplane covers the orthographic projection of the light-emitting unit on the driving backplane, and the refractive index of the filter units is greater than the refractive index of the first covering portion; The shading layer includes a plurality of shading units, wherein the shading units are arranged between the first touch unit and the first covering portion, or are arranged on a side of the first covering portion away from the driving backplane, the shading units cover the orthographic projection of the first touch unit on the driving backplane, and a light-transmitting opening is formed between the sides of the shading units that are close to each other, and the orthographic projection of the color-resistance opening on the driving backplane is located within the orthographic projection of the light-transmitting opening on the driving backplane.

2. The display panel according to claim 1, characterized in that: The filter unit extends from a side surface of the first covering portion to a surface of the first covering portion away from the driving back plate.

3. The display panel according to claim 2, characterized in that: When the shading unit is arranged between the first touch unit and the first covering part, the side surface of the first covering part includes a first inclined surface, a straight surface and a second inclined surface, the slope angle of the first inclined surface is 30-50 degrees, the straight surface is arranged at an end of the first inclined surface away from the driving back plate, the straight surface and the surface of the driving back plate are parallel to each other, and the second inclined surface is arranged at an end of the straight surface away from the first inclined surface, and the slope angle of the second inclined surface is 45-75 degrees.

4. The display panel according to claim 3, characterized in that: The display panel further includes a passivation layer, which is disposed on a side of the first touch electrode layer away from the driving backplane, and covers a plurality of the first touch control units.

5. The display panel according to claim 2, characterized in that: When the shading unit is disposed on a side of the first covering portion away from the driving backplane, the side surface of the first covering portion is an inclined surface, and the slope angle of the side surface of the first covering layer is 55-85 degrees.

6. The display panel according to claim 5, characterized in that: The filter unit is disposed on a side of the first covering portion away from the driving back plate, and the orthographic projection of the filter unit on the driving back plate is located within the orthographic projection of the light-transmitting opening on the driving back plate.

7. The display panel according to claim 6, characterized in that: The distance between the edge of the shading unit and the edge of the filter unit is 1-3 μm, and the distances between the filter units of different colors and the adjacent shading units are equal.

8. The display panel according to claim 1, characterized in that: The greater the refractive index of the different filter units, the greater the distance between the edge of the filter unit close to the driving backplane and the edge of the light emitting unit close to the driving backplane.

9. The display panel according to claim 8, characterized in that: The multiple light-emitting units of different colors include a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and the filter units of different colors include a red filter unit, a green filter unit and a blue filter unit. The orthographic projection of the red filter unit on the driving backplane covers the orthographic projection of the red light-emitting unit on the driving backplane, the orthographic projection of the green filter unit on the driving backplane covers the orthographic projection of the green light-emitting unit on the driving backplane, and the orthographic projection of the blue filter unit on the driving backplane covers the orthographic projection of the blue light-emitting unit on the driving backplane.

10. The display panel according to claim 9, characterized in that: The distance between the edge of the red filter unit close to the driving backplane and the edge of the red light-emitting unit close to the driving backplane is the first outward expansion distance, the distance between the edge of the green filter unit close to the driving backplane and the edge of the green light-emitting unit close to the driving backplane is the second outward expansion distance, the distance between the edge of the blue filter unit close to the driving backplane and the edge of the blue light-emitting unit close to the driving backplane is the third outward expansion distance, the refractive index of the red filter unit is 1.65-1.85, the refractive index of the green filter unit and the refractive index of the blue filter unit are 1.55-1.7, the first outward expansion distance is 1-3μm, the second outward expansion distance is 0-2μm, and the ratio of the third outward expansion distance is 0-2μm.

11. The display panel according to claim 1, characterized in that: The orthographic projection of the filter unit on the driving backplane covers the orthographic projection of the light-transmitting opening on the driving backplane.

12. The display panel according to claim 5, characterized in that: Two adjacent filter units extend to be connected to each other, the shading unit is arranged on a side of the filter unit away from the driving backplane and is located at the connection between the two filter units, and the orthographic projection of the shading unit on the driving backplane overlaps with the orthographic projections of the filter units of different colors on the driving backplane.

13. The display panel according to claim 5, characterized in that: The shading unit is arranged on a side of the first covering portion away from the driving back plate, the filtering unit extends to a side of the shading unit away from the driving back plate, and two adjacent filtering units of different colors are arranged at intervals.

14. The display panel according to claim 5, characterized in that: The first covering portion includes a first covering unit, a second covering unit and a third covering unit which are arranged at intervals, the first covering unit is arranged between the second covering unit and the third covering unit, the slope angles of the sides of the first covering unit, the second covering unit and the third covering unit are less than 90 degrees, the first covering unit covers the first touch unit, the shading unit covers the first covering unit, the groove formed between the second covering unit and the first covering unit, and the groove formed between the third covering unit and the first covering unit, and the two filtering units of different colors respectively cover the second covering unit and the third covering unit on one side away from the driving backplane.

15. The display panel according to claim 5, characterized in that: The first covering portion includes a first covering unit, a second covering unit and a third covering unit which are arranged at intervals, the first covering unit is arranged between the second covering unit and the third covering unit, the slope angles of the sides of the first covering unit, the second covering unit and the third covering unit are less than 90 degrees, the first covering unit covers the first touch unit, the two filter units of different colors respectively cover the second covering unit, the groove formed between the second covering unit and the first covering unit, the third covering unit and the groove formed between the third covering unit and the first covering unit, and the shading unit covers the first covering unit and the filter units of different colors in different grooves.

16. The display panel according to claim 1, characterized in that: A protrusion is provided on one side of the first covering parts that are close to each other.

17. The display panel according to claim 16, characterized in that: The protrusion extends from a side of the first covering portion close to the driving back plate to a side close to and away from the driving back plate, and a height of the protrusion is always the same in an extending direction of the side surface of the first covering portion.

18. The display panel according to claim 16, characterized in that: A plurality of protrusions are distributed along the edge of the color-resistance opening.

19. The display panel according to claim 5, characterized in that: An outward extension distance between an edge of a surface of the first covering portion close to the driving backplane and an edge of a surface of the pixel defining portion close to the driving backplane is 0.5-2 μm.

20. The display panel according to claim 5, characterized in that: The distance between the edge of the shading unit and the edge of the first covering portion away from the driving backplane is 1-3 μm.

21. The display panel according to claim 9, characterized in that: An extension distance between an edge of a side of the filter unit close to the driving back plate and an edge of a side of the filter unit away from the driving back plate is 0-2 μm.

22. The display panel according to claim 1, characterized in that: The display panel further comprises a second covering layer, and the second covering layer is arranged on a side of the filter layer away from the driving backplane.

23. The display panel according to claim 1, characterized in that: The display panel further includes an encapsulation layer, and the encapsulation layer is disposed between the first touch electrode layer and the common electrode.

24. A display device, characterized in that: A display panel comprising any one of claims 1 to 23.

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