Display panel and display device

Abstract

The invention discloses a display panel and a display device.The display panel comprises a substrate, a pixel driving layer, a pixel defining layer, a plurality of light-emitting units, a packaging layer and a color filter layer, a first groove is formed in the position, corresponding to an opening area, of the packaging layer, and a second groove is formed in the position, corresponding to the opening area, of the packaging layer; the color filter layer comprises a plurality of color filter parts and a plurality of shading parts, the color filter parts are arranged in the first groove, the color filter parts comprise color filter parts of at least two colors, the shading parts are arranged in the non-opening area, and the shading parts are formed by overlapping the color filter parts of different colors. According to the display panel, the first groove is formed to contain the color filter part, the shading part is formed by overlapping the color filter parts of different colors, the manufacturing problem of the color filter parts is solved, the light emitting efficiency of the color filter parts is improved, and the display effect of the display panel is improved.

Description

Technical Field

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

[0002] With the continuous development of OLED (Organic Light-Emitting Diode) display technology, OLED is increasingly used in displays such as smartphones, tablets, computers, and televisions. OLED displays have the advantages of being thin and light, high contrast, fast response, wide viewing angle, high brightness, and full color. In order to reduce the reflectivity of external light in OLED displays, the current mainstream solution is to attach a circular polarizer to the light-emitting surface of the OLED display. However, this solution reduces the light-emitting effect due to the large light loss of the circular polarizer. Another solution is to set a color filter on the light-emitting surface of the OLED display to improve the light-emitting efficiency through the color filter. The effect of the reflection of ambient light in the OLED display can be reduced by setting a black matrix (BM), and the thickness of the entire display panel can also be reduced.

[0003] However, in the process of preparing the color filter on the display panel, since the black matrix is ​​made and then the color filter material is formed to make the color filter layer, the black matrix affects the color filter, causing display problems in the color filter. Summary of the invention

[0004] The purpose of the present application is to provide a display panel and a display device. By setting a first groove to accommodate a color filter portion, a shading portion is formed by overlapping color filters of different colors, thereby solving the process problem of the color filter portion, improving the light output efficiency of the color filter portion, and improving the display effect of the display panel.

[0005] The present application discloses a display panel, which includes a substrate, a pixel driving layer, a pixel definition layer, a plurality of light-emitting units, a packaging layer and a color filter layer, wherein the pixel driving layer is arranged on the substrate, the pixel definition layer is arranged on the pixel driving layer and is formed with a plurality of opening areas, a plurality of light-emitting unit arrays are arranged on the pixel driving layer and are respectively located in the plurality of opening areas, the packaging layer is arranged on the light-emitting unit layer and is used to seal the light-emitting units, a first groove is arranged on the packaging layer at a position corresponding to the opening area, the color filter layer is arranged on the packaging layer, wherein the color filter layer includes a plurality of color filter portions and a plurality of shading portions, the color filter portion is arranged in the first groove, the plurality of color filter portions include color filter portions of at least two colors, the shading portion is arranged in a non-opening area, and the shading portion is formed by overlapping the color filter portions of different colors.

[0006] Optionally, the encapsulation layer includes an organic encapsulation layer, and a first groove is arranged at a position of the organic encapsulation layer corresponding to the opening area, and a radial width of the first groove is greater than a radial width of the opening area; on the orthographic projection of the base substrate, the shading portion partially overlaps with the first groove.

[0007] Optionally, the encapsulation layer also includes a first inorganic layer, which is arranged on the organic encapsulation, the thickness of the first inorganic layer is less than the depth of the first groove, and the first inorganic layer covers the first groove to form the second groove; the side wall of the second groove is 5um to 20um away from the edge of the opening area.

[0008] Optionally, the display panel further includes a plurality of reflective layers, wherein the reflective layers are respectively arranged on side surfaces of the first groove, and an angle formed between the reflective layers and a bottom surface of the first groove is an obtuse angle.

[0009] Optionally, the display panel further includes a touch wiring layer, and the touch wiring is arranged on the packaging layer; the touch wiring layer and the reflective layer are formed by using a metal material in the same process.

[0010] Optionally, the multiple color filter sections include multiple first color filter sections and multiple second color filter sections; the colors of the first color filter section and the second color filter section are different; in each of the non-opening areas, the first color filter section is provided with a first color extension section, and the second color filter section is provided with a second color extension section, and the first color extension section and the second color extension section are stacked to form a shading section; the first color extension section is arranged under the second color extension section, and on the orthographic projection of the base substrate, the second color extension section and the second extension section overlap with the reflective layer respectively; the reflective layer is arranged in the non-opening area.

[0011] Optionally, the first color filter portion is a red filter portion, the first color extension portion is a red extension portion, the second color filter portion is a blue filter portion, and the second color extension portion is a blue extension portion; in each of the non-opening areas, the shading portion is formed by stacking the red extension portion and the blue extension portion.

[0012] Optionally, the thickness of the red extending portion is equal to half of the thickness of the red filtering portion, and the thickness of the blue extending portion is equal to half of the thickness of the blue filtering portion.

[0013] Optionally, an angle formed by a side surface of the first color extending portion close to the second color filter portion and a bottom surface of the first color extending portion is an obtuse angle.

[0014] The present application also discloses a display device, comprising a driving circuit and the above-mentioned display panel, wherein the driving circuit is used to drive the display panel to display.

[0015] In the present application, a first groove is formed on the encapsulation layer, and a color filter is formed in the first groove by sinking the color filter, and the extension extending to the non-first groove is used as a shading portion, and the shading portion is formed by at least two extensions of colors. Thus, the process required for the black matrix is ​​saved, the number of photolithography processes of the mask is reduced, and the process is simplified, and the pressure of the encapsulation layer to block water and oxygen is increased, thereby reducing the risk of reduced luminous efficiency or device failure of the OLED device. In addition, the color filter is formed in the first groove, and the flow of the color filter material is limited by the first groove to ensure the shape of the color filter stable and reduce the risk of deformation. In particular, when the color filter is extended to the non-opening area to form the shading portion, the edge effect of the color filter is reduced by the effect of the first groove, resulting in unevenness of the color filter at the edge position. In addition, by grooving the encapsulation layer, the thickness of the encapsulation layer at the opening area is thinner, which is conducive to the emission of light, and the shading portion is further away from the position of the light-emitting unit, which is conducive to improving the shading ability, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 is a schematic top view of a display panel according to a first embodiment of the present application;

[0018] Figure 2 yes Figure 1 Schematic diagram of the cross section along the cutting line AA;

[0019] Figure 3 is a schematic diagram of the first groove of the present application;

[0020] Figure 4 is a schematic diagram of another display panel of the first embodiment of the present application;

[0021] Figure 5 is a schematic top view of a display panel according to a second embodiment of the present application;

[0022] Figure 6 is a cross-sectional view of a display panel according to a second embodiment of the present application;

[0023] Figure 7 is a schematic diagram of a display device of the present application.

[0024] Among them, 100, display panel; 101, opening area; 102, non-opening area; 110, base substrate; 111, pixel driving layer; 112, pixel definition layer; 113, light-emitting unit; 120, encapsulation layer; 121, first inorganic layer; 122, organic encapsulation layer; 123, second inorganic layer; 124, first groove; 125, second groove; 130, color filter layer; 140, color filter part; 141, first color filter part; 142, second color filter part; 143, first color extension part; 144, second color extension part; R, red filter part; B, blue filter part; RE, red extension part; BE, blue extension part; 150, shading part; 160, touch wiring layer; 170, reflection layer; 200, display device; 210, driving circuit. DETAILED DESCRIPTION

[0025] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0026] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. In addition, the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicating orientation or positional relationships are described based on the orientation or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the simplified description of the present application, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0027] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0028] Figure 1 is a schematic top view of a display panel of the first embodiment of the present application, Figure 2 yes Figure 1 Schematic diagram of the cross section along the cutting line AA, see Figure 1 to Figure 2As shown, the present application discloses a display panel 100, the display panel 100 includes a base substrate 110, a pixel driving layer 111, a pixel definition layer 112, a plurality of light emitting units 113, an encapsulation layer 120 and a color filter layer 130, the pixel driving layer 111 is arranged on the base substrate 110, the pixel definition layer 112 is arranged on the pixel driving layer 111, and a plurality of opening areas 101 are formed, a plurality of light emitting units 113 are arranged in an array on the pixel driving layer 111, and are respectively located in the plurality of opening areas 101, the encapsulation layer 120 is arranged on the light emitting units 113 The color filter layer 130 is arranged on the encapsulation layer 120, wherein the encapsulation layer 120 is provided with a first groove 124 at a position corresponding to the opening area 101, and the color filter layer 130 includes a plurality of color filter portions 140 and a plurality of shading portions 150, the color filter portions 140 are arranged in the first groove 124, the plurality of color filter portions 140 include color filter portions 140 of at least two colors, the shading portion 150 is arranged in the non-opening area 102, and the shading portion 150 is formed by overlapping the color filter portions 140 of different colors.

[0029] In the present application, the first groove 124 is formed on the encapsulation layer 120, the color filter 140 is sunken, the color filter 140 is formed in the first groove 124, the extension extending to the non-first groove 124 is used as the light shielding portion 150, and the light shielding portion 150 is formed by the extension of at least two colors. Thus, the process required for the black matrix is ​​saved, the number of photolithography processes of the mask is reduced, and the process is simplified, and the pressure of the encapsulation layer 120 to block water and oxygen is increased, thereby reducing the risk of reduced OLED device luminous efficiency or device failure. In addition, the color filter 140 is formed in the first groove 124, and the flow of the color filter 140 material is limited by the first groove 124, so as to ensure the shape of the color filter 140 Stable, reduce the risk of deformation, especially when the color filter 140 is extended to the non-opening area 102 to form the light shielding portion 150, the edge effect of the color filter 140 is reduced by the effect of the first groove 124, resulting in unevenness of the color filter 140 at the edge position. Furthermore, by grooving the encapsulation layer 120 , the thickness of the encapsulation layer 120 at the opening area 101 is thinner, which is beneficial to light emission, and the shading portion 150 is further away from the light-emitting unit 113 , which is beneficial to improving the shading ability and further improving the display effect of the display panel 100 .

[0030] Figure 3 is a schematic diagram of the first groove of the present application, see Figure 3As shown, the encapsulation layer 120 includes an organic encapsulation layer 122, and the organic encapsulation layer 122 is provided with a first groove 124 at a position corresponding to the opening area 101. The encapsulation layer 120 also includes a first inorganic layer 121, which is provided on the organic encapsulation, and the first inorganic layer 121 covers the first groove 124 to form the second groove 125.

[0031] The encapsulation layer 120 in this embodiment adopts thin film encapsulation technology, that is, encapsulation is achieved by stacking multiple film layers. In addition to the first inorganic layer 121, a second inorganic layer 123 is generally provided below the organic encapsulation layer 122, thereby forming a three-layer film stacking method for encapsulation. The first inorganic layer 121 and the second inorganic layer 123 are formed of inorganic insulating materials, and the organic encapsulation layer 122 is formed of organic insulating materials. The first inorganic layer 121 and the second inorganic layer 123 have strong compactness and can isolate water and oxygen, and the thickness of the organic encapsulation layer 122 is relatively thick and has better buffering capacity. The encapsulation of the light-emitting unit 113 is achieved by sequentially forming the second inorganic layer 123, the organic encapsulation layer 122 and the first inorganic layer 121 on the light-emitting unit 113.

[0032] In this embodiment, the first groove 124 is mainly formed on the organic encapsulation layer 122. On the one hand, the organic encapsulation layer 122 is thicker, and the first groove 124 is formed on the organic encapsulation layer 122, which has little impact on the organic encapsulation layer 122 and other film layers. On the other hand, by reducing the thickness of the organic encapsulation layer 122 in the opening area 101, the loss of light passing through the organic encapsulation layer 122 can also be reduced.

[0033] The thickness of the first inorganic layer 121 is smaller than the depth of the first groove 124, and the thickness of the second inorganic layer 123 is smaller, which has little effect on the thickness of the first groove 124 and the second groove 125. It can be considered that the thickness of the first groove 124 and the second groove 125 are the same. Of course, since the thickness of the first inorganic layer 121 is smaller, the width of the second groove 125 can also be considered to be equivalent to the width of the first groove 124. Of course, the width of the second groove 125 is actually slightly smaller than that of the first groove 124.

[0034] Specifically, the depth of the second groove 125 needs to be greater than or equal to the thickness of the color filter 140. When the thicknesses of the color filters 140 of different colors are different, the depth of the second groove 125 needs to be greater than or equal to the color filter 140 of the thickest color. By setting the depth of the second groove 125 to be larger, when the color filter 140 and the extension located in the non-opening area 102 are formed, the color filter 140 material formed on the side wall of the second groove 125 is more uniform, and the overlap position of the thin black matrix and the color filter 140 will not be caused by the thin thickness of the black matrix when the groove below the color filter 140 is smaller, for example, the color filter 140 is partially lifted up by the black matrix, resulting in a bull horn phenomenon. The present application avoids the above-mentioned bull horn phenomenon by increasing the depth of the second groove 125.

[0035] Specifically, the radial width of the first groove 124 is greater than the radial width of the opening area 101 ; on the orthographic projection of the base substrate 110 , the light shielding portion 150 partially overlaps with the first groove 124 .

[0036] In the present embodiment, the area of ​​the first groove 124 will be larger than the area of ​​the opening area 101, that is, the side wall of the second groove 125 will extend beyond the edge of the opening area 101, and the extending area is also provided with a shading portion 150, so as to utilize the shading ability of the shading portion 150 to limit the part of the first groove 124 in the non-opening area 102 from emitting light. It can be understood that, in general, the effective light emitting area of ​​the light-emitting unit 113 or the opening area 101 domain provided by the pixel definition layer 112 is used as the opening area 101. The opening area 101 of the present application is not provided with a shading portion 150, that is, the area without the shading portion 150 is the opening area 101, and the area with the shading portion 150 is the non-opening area 102. In this embodiment, the first groove 124 extends from the opening area 101 to the non-opening area 102 , so that part of the light shielding portion 150 shields the color filter portion 140 in the first groove 124 , thereby shielding part of the area where the film layer of the color filter portion 140 suddenly changes.

[0037] The distance L between the sidewall of the second groove 125 and the edge of the opening area 101 is 5um to 20um; by extending the second groove 125 toward the non-opening area 102, the sidewall of the second groove 125 exceeds the edge of the opening area 101 by at least 5um. When the light shielding portion 150 is formed in the non-opening area 102, the light shielding portion 150 can avoid blocking the light of the opening area 101 as much as possible.

[0038] Figure 4 is a schematic diagram of another display panel of the first embodiment of the present application, see Figure 4As shown, the multiple color filter sections 140 include multiple first color filter sections 141 and multiple second color filter sections 142; the colors of the first color filter sections 141 and the second color filter sections 142 are different; in each of the non-opening areas 102, the first color filter section 141 is provided with a first color extension section 143, the second color filter section 142 is provided with a second color extension section 144, the first color extension section 143 and the second color extension section 144 are stacked to form a shading section 150; the first color filter section 141 is a red filter section R, the first color extension section 143 is a red extension section RE, the second color filter section 142 is a blue filter section B, and the second color extension section 144 is a blue extension section BE; in each of the non-opening areas 102, the shading section 150 is formed by stacking the red extension section RE and the blue extension section BE.

[0039] When the light shielding portion 150 of the display panel 100 is formed by the red extension RE and the blue extension BE, when forming the red filter R, it is necessary to retain all non-opening areas 102, that is, the red extension RE at the position other than the second groove 125, and when forming the blue filter B, retain all non-opening areas 102, that is, all blue extensions BE at the position other than the second groove 125. The light shielding portion 150 is formed by using the red extension RE and the blue extension BE. The advantage is that the blue filter B and the red filter R are respectively at the two ends of the shorter and longer wavelengths, and the wavelength difference between the two is far, there is no wavelength overlap, and has better light shielding ability. It is worth mentioning that the production of the black matrix and the color filter 140 of different colors requires a multi-mask lithography process, which makes the process complicated, and the multi-wet process and baking process will increase the pressure of the encapsulation layer 120 to block water and oxygen, thereby increasing the risk of reduced luminous efficiency or device failure of the OLED device. In this embodiment, the light shielding portion 150 is formed by using the laminated color filter portion 140 material, which also solves the above-mentioned problem.

[0040] Of course, considering that the color filter of the display panel 100 generally includes a red filter portion R, a blue filter portion B and a green filter portion, that is, the multiple filter portions include multiple red filter portions R, multiple blue filter portions B and multiple green filter portions. In each of the non-opening areas 102, the red filter portion R is provided with a red extension portion RE, the green filter portion is provided with a green extension portion, and the blue filter portion B is provided with a blue extension portion BE, and two of the red extension portion RE, the green extension portion and the blue extension portion BE form the light shielding portion 150 in the non-opening area 102.

[0041] In the present embodiment, considering that the display panel 100 is generally composed of an adjacent red filter portion R, a blue filter portion B and a green filter portion to form a pixel, the red filter portion R can be used as a red sub-pixel, the blue filter portion B can be used as a blue sub-pixel, and the green filter portion can be used as a green sub-pixel, a pixel is formed by the red sub-pixel, the blue sub-pixel and the green sub-pixel for display.

[0042] The light shielding portion 150 between the red sub-pixel and the blue sub-pixel may be formed by stacking the red extension portion RE and the blue extension portion BE. The light shielding portion 150 between the red sub-pixel and the green sub-pixel, or between the blue sub-pixel and the green sub-pixel may be formed by stacking the red extension portion RE and the blue extension portion BE, or may be formed by stacking the red sub-pixel and the green sub-pixel, or between the blue sub-pixel and the green sub-pixel.

[0043] Specifically, the color filter portion 140 is generally formed of a photoresist material. During the formation process, it is necessary to pre-cure and then use a mask for photolithography to retain the color filter portion 140 in the opening area 101 and remove the color filter portion 140 in the non-opening area 102. It is then cured again to achieve a patterned color filter portion 140.

[0044] In this embodiment, a color filter 140 with a comparable thickness may be formed first, and the color filter 140 is consistent with the thickness of the color extension portion. After the process of the light shielding portion 150 is completed, a second layer of color filter 140 is formed in the opening area 101 to meet the requirements of the color filter 140. Generally speaking, even if the light shielding portion 150 is a stacked arrangement, the required thickness of the color filter 140 does not need to be very thick, and the color filter 140 requires a higher color accuracy, and the filtering ability of the color filter 140 is related to the thickness. Therefore, a color filter 140 with a certain thickness is required to make the display panel 100 have a stronger filtering ability, a higher color accuracy, and a better display effect.

[0045] The color filter 140 in this embodiment is formed in two steps, which can be completed in the same color process. For example, the color filter 140 and the color extension are formed with a first thickness first, and then patterned by pre-curing, and then the color filter 140 with a second thickness is formed. After patterning again, it is cured to form a structure in which the thickness of the color filter 140 is greater than the thickness of the color extension. After the process is completed, the thickness of the red extension RE can be equal to half of the thickness of the red filter R, and the thickness of the blue extension BE can be equal to half of the thickness of the blue filter B. Of course, the thickness of the color filter 140 in the second groove 125 can also be greater than the thickness of the color extension by changing the fluidity of the photoresist material. When the adjacent color filter 140 is extended as the light shielding portion 150, the thickness design can be consistent with that of this embodiment.

[0046] Figure 5 is a schematic top view of a display panel according to a second embodiment of the present application, Figure 6 is a cross-sectional view of a display panel according to a second embodiment of the present application, see Figures 5 and 6 As shown, the present application discloses another display panel 100. The display panel 100 in this embodiment is further provided with a reflective layer 170 on the basis of the above embodiment, and the light extraction efficiency is improved by the reflective layer 170. Specifically, the display panel 100 further includes a plurality of reflective layers 170, the reflective layers 170 are respectively provided on the side surfaces of the first groove 124, the angle θ formed between the reflective layer 170 and the bottom surface of the first groove 124 is an obtuse angle, and the reflective layer 170 is provided in the non-opening area 102.

[0047] Specifically, when the first inorganic layer 121 is disposed on the organic encapsulation layer 122, the reflective layer 170 is disposed on the first inorganic layer 121, and the reflective layer 170 can be disposed around the opening area 101. The inclination angle of the reflective layer 170 is consistent with the inclination angle of the side wall of the second groove 125; under the orthographic projection of the base substrate 110, the light shielding portion 150 partially overlaps with the second groove 125. The side wall of the second groove 125 is 5um to 20um away from the edge of the opening area 101; by extending the second groove 125 toward the non-opening area 102, the side wall of the second groove 125 exceeds the edge of the opening area 101 by at least 5um.

[0048] In this embodiment, by disposing the reflective layer 170 on the side wall of the second groove 125, and in the process of forming the first groove 124, the bottom surface and the side surface of the first groove 124 can form an obtuse angle, so that the inclination angle of the reflective layer 170 is consistent with the inclination angle of the side wall of the first groove 124, in the opening area 101, part of the light emitted by the light-emitting unit 113 to the shading portion 150 can be reflected out, thereby improving the light extraction efficiency of the light-emitting unit 113.

[0049] Specifically, the display panel 100 further includes a touch wiring layer 160, and the touch wiring is arranged on the packaging layer 120; the touch wiring layer 160 and the reflective layer 170 are formed by the same process using metal materials. Generally speaking, the touch wiring layer 160 is arranged on the packaging layer 120. In this embodiment, the reflective layer 170 can be simultaneously made using the touch wiring layer 160. The touch wiring layer 160 is generally formed of metal materials. Metal materials generally have a good reflective effect and can block the light emitted from the light-emitting unit 113 to the light-shielding portion 150, thereby improving the light extraction efficiency of the display panel 100.

[0050] In another embodiment, the reflective layer 170 and the touch wiring layer 160 may be reused, that is, the touch wiring layer 160 is utilized and a portion of the touch wiring layer 160 is disposed on the side wall of the second groove 125 to achieve the function of reflecting light.

[0051] When the reflective layer 170 is provided, when external ambient light is incident on the interior of the display panel 100 , part of the light also shines on the reflective layer 170 . To this end, the present application improves the shading portion 150 so that the shading portion 150 overlaps with the reflective layer 170 on the orthographic projection of the base substrate 110 .

[0052] Specifically, the plurality of color filter sections 140 include a plurality of first color filter sections 141 and a plurality of second color filter sections 142; the colors of the first color filter sections 141 and the second color filter sections 142 are different; in each of the non-opening areas 102, the first color filter section 141 is provided with a first color extension section 143, and the second color filter section 142 is provided with a second color extension section 144, and the first color extension section 143 and the second color extension section 144 are stacked to form a shading section 150; in the non-opening area 102, the first color extension section 143 is provided under the second color extension section 144, and on the orthographic projection of the base substrate 110, the first color extension section 143 overlaps with the reflective layer 170; the second color extension section 144 overlaps with the reflective layer 170.

[0053] Among them, the first color filter portion 141 is a red filter portion R, the first color extension portion 143 is a red extension portion RE, the second color filter portion 142 is a blue filter portion B, and the second color extension portion 144 is a blue extension portion BE; in each of the non-opening areas 102, the shading portion 150 is formed by stacking the red extension portion RE and the blue extension portion BE.

[0054] In this embodiment, the red extension part RE is arranged under the blue extension part BE. When the reflective layer 170 is arranged on the side wall of the second groove 125 where the red filter part R is located, the red extension part RE overlaps with the reflective layer 170. In addition, by arranging the blue extension part BE on the red extension part RE, the blue extension part BE also overlaps with the reflective layer 170 in the orthographic projection of the base substrate 110. That is, the light shielding part 150 and the reflective layer 170 overlap on the base substrate 110, and the light incident on the reflective layer 170 is shielded by the light shielding part 150.

[0055] Furthermore, the color filter 140 of the present application can be formed by using negative photoresist materials. Negative organic glue materials include polyimide materials, epoxy resin materials or polyester materials, etc. The characteristics of such materials are that the illuminated part will polymerize and crosslink to remain as a functional structure, and the part of the negative photosensitive organic material that is not illuminated will be removed by the developer in the subsequent process. During photolithography, after a layer of negative organic glue material is coated on the encapsulation layer 120, due to the photosensitivity of the negative organic glue material, after the negative organic glue material is coated into a film, the illuminated part will polymerize and crosslink, so that the surface light will be stronger and it will be easier to polymerize and crosslink, and the light intensity will gradually weaken in deeper places, and the degree of polymerization and crosslinking is not as good as the surface. Therefore, during the development process, the part below where the light intensity is weakened will be reacted, thereby forming an inverted trapezoidal structure with a wide top and a narrow bottom. This makes the blue extension BE have a wide top and a narrow bottom structure at the end of the red extension RE, so as to achieve light shielding for the reflective layer 170.

[0056] In this embodiment, the first color extension portion 143 is also formed of a negative photoresist material. When the first color extension portion 143 is disposed below the second color extension portion 144, the reflective layer 170 on the side of the first color extension portion 143 close to the second color filter portion 142 also needs to be shielded by the first color extension portion 143. The angle formed by the side surface of the first color extension portion 143 close to the second color filter portion 142 and the bottom surface of the first color extension portion 143 is an obtuse angle. That is, the angle formed by the side surface of the red extension portion RE close to the blue filter portion B and the bottom surface of the red extension portion RE is an obtuse angle.

[0057] Specifically, the light shielding portion 150 between the red sub-pixel and the blue sub-pixel is formed by stacking the red extension portion RE and the blue extension portion BE. For the display panel 100 in which the light shielding portion 150 between the red sub-pixel and the green sub-pixel, and between the blue sub-pixel and the green sub-pixel can be formed by stacking the red extension portion RE and the blue extension portion BE, the specific process sequence includes first forming a red filter portion R, and forming red extension portions RE on both sides of the red filter portion R to serve as the light shielding portion 150. Forming a green filter portion at the position of the green filter portion, forming green extension portions on both sides of the green filter portion, and in the case where the red sub-pixel and the green sub-pixel are not adjacent to each other in this embodiment, the green extension portion does not overlap with the red extension portion RE. Finally, forming a blue filter portion B, forming blue extension portions BE on both sides of the blue filter portion B, and the blue extension portions BE form the light shielding portion 150 with the red extension portion RE and the green extension portion. It can be understood that when the arrangement of red sub-pixels, green sub-pixels, and blue sub-pixels is different, the stacked film layer of the shading portion 150 can be flexibly selected, for example, two or three colors of stacking can be used to achieve shading. When the adjacent positions of two red sub-pixels need to be shading, the shading portion 150 formed by the stacking of the red extension portion RE and the blue extension portion BE can be selected.

[0058] Figure 7 is a schematic diagram of the display device of the present application, see Figure 7 As shown, the present application further discloses a display device, wherein the display device 200 includes a driving circuit 210 and a display panel 100 in any of the above embodiments, wherein the driving circuit 210 is used to drive the display panel 100 to display.

[0059] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0060] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate substrate; A pixel driving layer is arranged on the base substrate; A pixel definition layer, disposed on the pixel driving layer and formed with a plurality of opening areas; A plurality of light-emitting units are arranged in an array on the pixel driving layer and are respectively located in the plurality of opening areas; an encapsulation layer, disposed on the light-emitting unit layer and used for sealing the light-emitting unit, wherein a first groove is disposed at a position of the encapsulation layer corresponding to the opening area; and A color filter layer, disposed on the encapsulation layer; Among them, the color filter layer includes multiple color filter parts and multiple shading parts, the color filter part is arranged in the first groove, the multiple color filter parts include color filter parts of at least two colors, and the shading part is arranged in the non-opening area; the shading part is formed by overlapping the color filter parts of different colors.

2. The display panel according to claim 1, characterized in that: The encapsulation layer comprises an organic encapsulation layer, and a first groove is arranged at a position of the organic encapsulation layer corresponding to the opening area; The radial width of the first groove is greater than the radial width of the opening area; On the orthographic projection of the base substrate, the light shielding portion partially overlaps with the first groove.

3. The display panel according to claim 2, characterized in that: The encapsulation layer further includes a first inorganic layer, the first inorganic layer is disposed on the organic encapsulation, the thickness of the first inorganic layer is less than the depth of the first groove, and the first inorganic layer covers the first groove to form the second groove; The distance between the sidewall of the second groove and the edge of the opening area is 5um to 20um.

4. The display panel according to claim 1, characterized in that: The display panel further includes a plurality of reflective layers, which are respectively arranged on the side surfaces of the first groove, and an angle formed between the reflective layers and the bottom surface of the first groove is an obtuse angle.

5. The display panel according to claim 4, characterized in that: The display panel further comprises a touch wiring layer, wherein the touch wiring is arranged on the packaging layer; The touch wiring layer and the reflective layer are formed by using metal materials in the same process.

6. The display panel according to claim 4, characterized in that: The plurality of color filter sections include a plurality of first color filter sections and a plurality of second color filter sections; the first color filter sections and the second color filter sections have different colors; In each of the non-opening areas, the first color filter portion is provided with a first color extension portion, the second color filter portion is provided with a second color extension portion, and the first color extension portion and the second color extension portion are stacked to form a light shielding portion; The first color extension portion is disposed under the second color extension portion, and on the orthographic projection of the base substrate, the second color extension portion and the second extension portion overlap with the reflective layer respectively; The reflective layer is disposed in the non-opening area.

7. The display panel according to claim 6, characterized in that: The first color filter portion is a red color filter portion, the first color extension portion is a red extension portion, the second color filter portion is a blue color filter portion, and the second color extension portion is a blue extension portion; In each of the non-opening areas, the light shielding portion is formed by stacking the red extension portion and the blue extension portion.

8. The display panel according to claim 7, characterized in that: The thickness of the red extension portion is equal to half of the thickness of the red filter portion, and the thickness of the blue extension portion is equal to half of the thickness of the blue filter portion.

9. The display panel according to claim 6, characterized in that: An angle formed between a side surface of the first color extending portion close to the second color filter portion and a bottom surface of the first color extending portion is an obtuse angle.

10. A display device, characterized in that: It comprises a driving circuit and the display panel according to any one of claims 1 to 9, wherein the driving circuit is used to drive the display panel to display.

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