Display panel and display device

Abstract

The embodiment of the utility model provides a display panel and a display device. The display panel comprises an array substrate, an insulation structure and a color film structure. The insulating structure defines a slot. The color film structure comprises a first filter film layer and a second filter film layer. A first through hole is formed in the first light filtering film layer, a second through hole is formed in the second light filtering film layer, the first light filtering film layer comprises a first light filtering structure, the second light filtering film layer comprises a second light filtering structure, and the first light filtering structure and / or the second light filtering structure are / is partially contained in the groove body; the first light filtering structure or the second light filtering structure extends into the groove body, so that the thickness of the first light filtering structure or the second light filtering structure perpendicular to the array substrate is increased, the manufacturing steps of the black matrix can be reduced, and the effects of saving the cost and improving the production efficiency are achieved; on the other hand, the thickness of the light filtering structure can be effectively controlled by controlling the depth of the groove body, and the layout space in the display panel is effectively utilized.

Description

TECHNICAL FIELD

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

[0002] In the related art, the COE process mainly includes a black matrix layer (BM) and an RGB color film layer, and the matrix layer and the RGB color film layer are formed through processes such as coating, exposure and development. The black matrix layer (BM) and the RGB color film layer are formed in the display panel respectively, which makes the display panel manufacturing process in the related art complex. UTILITY MODEL CONTENT

[0003] Embodiments of the present application provide a display panel and a display device to solve or alleviate one or more technical problems in the prior art.

[0004] As an aspect of the embodiments of the present application, the embodiments of the present application provide a display panel, comprising:

[0005] An array substrate comprising a plurality of pixel units arranged in an array, the plurality of pixel units comprising a first pixel unit and a second pixel unit;

[0006] An insulating structure disposed on one side of the array substrate, the insulating structure defining a groove;

[0007] A color film structure comprising a first filter layer and a second filter layer disposed on a side of the insulating structure facing away from the array substrate, the first filter layer having a first through hole, and the second filter layer having a second through hole; the first filter layer comprising a first filter structure, the first filter structure, the second through hole, and the first pixel unit being overlapped on the array substrate; the second filter layer comprising a second filter structure, the second filter structure, the first through hole, and the second pixel unit being overlapped on the array substrate;

[0008] Part of the first filter structure and / or the second filter structure is accommodated in the groove.

[0009] In some embodiments, the groove comprises a first groove and a second groove, part of the first filter structure is accommodated in the first groove, and part of the second filter structure is accommodated in the first through hole and the second groove.

[0010] In some embodiments, the distance between the first filter layer and the array substrate is less than the distance between the second filter layer and the array substrate, and the size of the first groove perpendicular to the array substrate is greater than the size of the second groove perpendicular to the array substrate.

[0011] In some embodiments, the color film structure further comprises a third filter layer, the first filter layer further defines a third through hole, the second filter layer further defines a fourth through hole, a projection of the third through hole on the array substrate overlaps with the corresponding pixel unit, the projection of the third through hole on the array substrate at least partially overlaps with the projection of the fourth through hole on the array substrate, and at least part of the third filter layer is arranged in an overlapping region of the third through hole and the fourth through hole.

[0012] In some embodiments, the first filter layer and the second filter layer together define a light blocking structure in the overlapping part, and a projection of the light blocking structure on the array substrate is located between two adjacent pixel units.

[0013] In some embodiments, one of the first filter layer and the second filter layer comprises a blue filter unit, and the other comprises a red filter unit, and the third filter layer comprises a green filter unit.

[0014] In some embodiments, the insulating structure defines a third groove, and at least part of the third filter layer is arranged in the third groove.

[0015] In some embodiments, the insulating structure comprises a touch function layer, and the touch function layer comprises a touch barrier layer, a touch isolation layer, a first touch metal layer, and a second touch metal layer; the touch barrier layer is arranged on one side of the array substrate; the first touch metal layer is arranged on a side of the touch barrier layer away from the array substrate; the touch isolation layer is arranged on a side of the first touch metal layer away from the array substrate; the second touch metal layer is arranged on a side of the touch isolation layer away from the array substrate; the first groove and the second groove are arranged in the touch isolation layer; the first filter structure is arranged in the first groove, and the second filter structure is arranged in the second groove.

[0016] In some embodiments, a fourth groove is arranged on the touch barrier layer, a projection of the first groove on the array substrate at least partially overlaps with a projection of the fourth groove on the array substrate, and the first filter structure is arranged in the first groove and the fourth groove; and / or, a fifth groove is arranged on the touch barrier layer, a projection of the second groove on the array substrate at least partially overlaps with a projection of the fifth groove on the array substrate, and the second filter structure is arranged in the second groove and the fifth groove.

[0017] In some embodiments, a distance between the first filter layer and the array substrate is less than a distance between the second filter layer and the array substrate.

[0018] A fourth groove is arranged on the touch barrier layer, a projection of the first groove on the array substrate at least partially overlaps with a projection of the fourth groove on the array substrate, and the first filter structure is arranged in the first groove and the fourth groove.

[0019] In some embodiments, the touch isolation layer defines a third groove, and at least part of the third filter film layer is arranged in the third groove.

[0020] In some embodiments, the array substrate further comprises a light emitting layer and an encapsulation layer; the touch function layer further comprises a first touch metal layer and a second touch metal layer; the encapsulation layer is arranged on one side of the light emitting layer; the first touch metal layer is arranged on a side of the touch barrier layer away from the array substrate; and the second touch metal layer is arranged on a side of the touch isolation layer away from the array substrate.

[0021] In some embodiments, the insulating structure comprises a planar layer and a touch function layer, the touch function layer is arranged on one side of the array substrate, the planar layer is arranged on a side of the touch function layer away from the array substrate, the first groove and the second groove are arranged in the planar layer respectively, the first filter structure is arranged in the first groove, and the second filter structure is arranged in the second groove.

[0022] In some embodiments, a side of the planar layer away from the array substrate defines a third groove, and at least part of the third filter film layer is arranged in the third groove.

[0023] In some embodiments, a size of the first filter structure in a direction perpendicular to the array substrate is greater than or equal to 1 um, and / or a size of the second filter structure in a direction perpendicular to the array substrate is greater than or equal to 1 um.

[0024] As a second aspect of the present application, the present application further provides a display device comprising the display panel according to any one of the above embodiments.

[0025] The embodiments of the present application have the following beneficial effects:

[0026] Based on the above-provided display panel, by defining the groove in the touch function layer, and by extending the first filter structure or the second filter structure into the groove, the thickness of the first filter structure in the direction perpendicular to the array substrate or the thickness of the second filter structure in the direction perpendicular to the array substrate is increased, and then the thickness of the first filter structure in the direction perpendicular to the array substrate and the thickness of the second filter structure in the direction perpendicular to the array substrate are matched, so that the present application can reduce the manufacturing steps of the black matrix, save the cost and improve the production efficiency on one hand, and effectively control the thickness of the first filter structure or the second filter structure by controlling the depth of the groove, thereby avoiding the increase of the overall thickness of the display panel due to the adjustment of the thickness of the color film structure, and effectively utilizing the layout space in the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0027] In the drawings, like reference numerals refer to like elements throughout the various figures. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and that they should not be construed as limiting the scope of the application.

[0028] Figure 1 A structural schematic diagram of a display panel in the related art is shown;

[0029] Figure 2 A structural schematic diagram of a display panel according to an embodiment of the application is shown;

[0030] Figure 3 A structural schematic diagram of a second display panel according to an embodiment of the application is shown;

[0031] Figure 4 A structural schematic diagram of a third display panel according to an embodiment of the application is shown;

[0032] Figure 5 A structural schematic diagram of a fourth display panel according to an embodiment of the application is shown;

[0033] Figure 6 A structural schematic diagram of a fifth display panel according to an embodiment of the application is shown;

[0034] Figure 7 A structural schematic diagram of a sixth display panel according to an embodiment of the application is shown;

[0035] Figure 8 A structural schematic diagram of a seventh display panel according to an embodiment of the application is shown;

[0036] Figure 9 A structural schematic diagram of an eighth display panel according to an embodiment of the application is shown.

[0037] Reference numeral explanation:

[0038] Related art:

[0039] 1', display panel;

[0040] 10', array substrate; 11', pixel unit;

[0041] 20', color film structure; 21', first filter film layer; 22', second filter film layer; 23', third filter film layer.

[0042] The present application:

[0043] 1, display panel;

[0044] 10, array substrate; 11, pixel unit; 12, light-emitting layer; 13, encapsulation layer;

[0045] 20, color filter structure; 21, first filter layer; 211, first through hole; 212, third through hole; 213, second filter structure; 22, second filter layer; 221, first filter structure; 222, fourth through hole; 223, second through hole; 23, third filter layer;

[0046] 30, insulating structure; 31, touch function layer; 311, first touch metal layer; 312, touch isolation layer; 313, touch barrier layer; 3131, fourth slot; 3132, fifth slot; 314, second touch metal layer; 32, planarization layer; 33, first slot; 34, second slot; 35, third slot. DETAILED DESCRIPTION

[0047] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0048] Figure 1 A structure schematic diagram of a display panel in the related art is shown, referring to Figure 1 In the related art, the display panel 1' includes an array substrate 10' and a color filter structure 20'. The array substrate 10' includes a plurality of pixel units 11' arranged in an array. The color filter structure 20' includes a first filter layer 21', a second filter layer 22', and a third filter layer 23'. The first filter layer 21' defines a first filter structure with a same color as a corresponding pixel unit 11'. The second filter layer 22' defines a second filter structure with a same color as the corresponding pixel unit 11'. The first filter layer 21' is disposed on a side of an insulating structure away from the array substrate 10'. The second filter layer 22' is disposed on a side of the first filter layer 21' away from the array substrate 10'. The first filter layer 21' defines a first through hole and a third through hole. The second filter layer 22' defines a fourth through hole and a second through hole.

[0049] At least part of the second filter structure is disposed in the first through hole. At least part of the third filter layer 23' is disposed in the third through hole and the fourth through hole. A normal projection of the first filter structure on the array substrate 10' at least partially overlaps a normal projection of the second through hole on the array substrate 10'. However, due to the first filter layer 21', the second filter layer 22', and the third filter layer 23' being disposed in a stack, thicknesses of the first filter layer 21', the second filter layer 22', and the third filter layer 23' are inconsistent, which further causes light exiting from each pixel unit 11' to be inconsistent.

[0050] Figure 2 A structural diagram of a display panel 1 according to an embodiment of the present application is shown. The display panel 1 includes an array substrate 10, an insulating structure 30, and a color film structure 20. The array substrate 10 includes a plurality of pixel units 11 arranged in an array, and the plurality of pixel units 11 include first pixel units 11 and second pixel units 11.

[0051] In some embodiments, the array substrate 10 further includes a substrate. The substrate is located at the bottom of the array substrate 10 and is used to carry various film layers on the array substrate 10. The shape of the substrate is adapted to the shape of the array substrate 10, and in actual implementation, the shape of the substrate can be square, rectangular, circular, or the like, which is not limited herein. The substrate can be made of a transparent material, and specifically can be glass or resin, which is not limited herein.

[0052] The plurality of pixel units 11 are located on the substrate, and each pixel unit 11 includes a sub-pixel driving circuit and a light emitting element. The light emitting element includes an anode, a light emitting functional layer, and a cathode which are sequentially stacked. The sub-pixel driving circuit is coupled to the anode of the light emitting element, and the sub-pixel driving circuit is used to provide a driving signal for the light emitting element to drive the light emitting element to emit light.

[0053] The insulating structure 30 is arranged on one side of the array substrate 10, and the insulating structure 30 defines a groove.

[0054] The color film structure 20 includes a first filter film layer 21 and a second filter film layer 22. The first filter film layer 21 is provided with a first through hole 211, and the second filter film layer 22 is provided with a second through hole 223. The first filter film layer 21 includes a first filter structure 221, and the first filter structure 221, the second through hole 223, and the first pixel unit 11 are overlapped on the array substrate 10. The first filter structure 221 is used to transmit light of a color matched with the corresponding pixel unit 11. In this way, the corresponding pixel unit 11 of the first filter film layer 21 can emit light through the second through hole 223. The first filter film layer 21 and the second filter film layer 22 can respectively transmit light of one of red, green, and blue colors, and absorb light of other colors.

[0055] It can be understood that the first filter structure 221 is used to transmit light of a color matched with the corresponding pixel unit 11, that is, the second through hole 223, the first filter structure 221, and the corresponding pixel unit 11 are overlapped on the array substrate 10. The first filter structure 221 and the second through hole 223 can allow light of a specific wave band of the corresponding pixel unit 11 to pass through.

[0056] The second filter film layer 22 comprises a second filter structure 213, a normal projection of the second filter structure 213 on the array substrate 10, a normal projection of the first through hole 211 on the array substrate 10, and a normal projection of the second pixel unit 11 on the array substrate 10 are overlapped, and the second filter structure 213 is used for transmitting light rays matching the color of the corresponding pixel unit 11. The corresponding pixel unit 11 of the second filter film layer 22 can emit light rays through the first through hole 211, wherein part of the first filter structure 221 and / or the second filter structure 213 is accommodated in the groove.

[0057] It can be understood that the second filter structure 213 is used for transmitting light rays matching the color of the corresponding pixel unit 11, that is, the first through hole 211, the second filter structure 213, and the corresponding pixel unit 11 are overlapped in the normal projection on the array substrate 10, and the second filter structure 213 and the first through hole 211 can allow the light rays of a specific wave band of the corresponding pixel unit 11 to pass through.

[0058] According to the technology of the present application, on the one hand, the light-blocking structure is formed by overlapping the first filter film layer 21 and the second filter film layer 22 to replace the black matrix in the related art, which can reduce the manufacturing steps of the black matrix, thereby achieving the effects of saving cost and improving production efficiency. On the other hand, the present application can set a groove on the insulating structure 30, so that when the photoresist is coated to form the first filter film layer 21 or the second filter film layer 22, the first filter structure 221 of the first filter film layer 21 or the second filter structure 213 of the second filter film layer 22 can flow into the groove of the insulating structure 30, thereby increasing the thickness of the first filter structure 221 or the second filter structure 213 perpendicular to the array substrate 10 without increasing the thickness of the display panel 1.

[0059] In the illustrated example, in the scheme in which the first light filtering film layer 21 and the second light filtering film layer 22 overlap to form the light blocking structure, the first light filtering film layer 21 needs to be prepared first, and then the second light filtering film layer 22 is arranged on the side of the first light filtering film layer 21 away from the array substrate 10, and the second light filtering structure 213 is arranged in the first through hole 211. As such, the thicknesses of the first light filtering structure 221 and the second light filtering structure 213 in the vertical direction of the array substrate 10 are inconsistent, for example, the thickness of the first light filtering structure 221 in the vertical direction of the array substrate 10 is less than the thickness of the second light filtering structure 213 in the vertical direction of the array substrate 10. The present application defines the groove on the touch function layer 31, and the first light filtering structure 221 or the second light filtering structure 213 extends into the groove, thereby increasing the thickness of the first light filtering structure 221 in the vertical direction of the array substrate 10 or the thickness of the second light filtering structure 213 in the vertical direction of the array substrate 10, and further matching the thickness of the first light filtering structure 221 in the vertical direction of the array substrate 10 and the thickness of the second light filtering structure 213 in the vertical direction of the array substrate 10. On the one hand, the present application can reduce the manufacturing steps of the black matrix, save costs and improve production efficiency. On the other hand, the depth of the groove can be controlled to effectively control the thickness of the first light filtering structure 221 or the second light filtering structure 213, avoid increasing the overall thickness of the display panel 1 for adjusting the thickness of the color film structure 20, and effectively utilize the layout space in the display panel 1.

[0060] In some embodiments, the groove includes a first groove 33 and a second groove 34, and part of the first light filtering structure 221 is accommodated in the first groove 33, and part of the second light filtering structure 213 is accommodated in the first through hole 211 and the second groove 34.

[0061] In the illustrated example, the present application defines the first groove 33 and the second groove 34 on the touch function layer 31, and the first light filtering structure 221 and the second light filtering structure 213 extend into the first groove 33 and the second groove 34, respectively, thereby increasing the thickness of the first light filtering structure 221 in the vertical direction of the array substrate 10 and the thickness of the second light filtering structure 213 in the vertical direction of the array substrate 10, and further matching the thickness of the first light filtering structure 221 in the vertical direction of the array substrate 10 and the thickness of the second light filtering structure 213 in the vertical direction of the array substrate 10. On the one hand, the present application can reduce the manufacturing steps of the black matrix, save costs and improve production efficiency. On the other hand, the depth of the first groove 33 can be controlled to effectively control the thickness of the first light filtering structure 221, and the depth of the second groove 34 can be controlled to effectively control the thickness of the second light filtering structure 213, avoid increasing the overall thickness of the display panel 1 for adjusting the thickness of the color film structure 20, and effectively utilize the layout space in the display panel 1.

[0062] In some embodiments, referring to Figure 2 , Figure 4 and Figure 5 , the distance between the first filter layer 21 and the array substrate 10 is smaller than the distance between the second filter layer 22 and the array substrate 10, and the size of the first groove 33 in the direction perpendicular to the array substrate 10 is larger than the size of the second groove 34 in the direction perpendicular to the array substrate 10.

[0063] In some embodiments, the color filter structure 20 further comprises a third filter layer 23, the third filter layer 23 is capable of transmitting one of red, green and blue light and absorbing other colors of light. The first filter layer 21 is further defined with a third through hole 212, the orthographic projection of the third through hole 212 on the array substrate 10 overlaps the corresponding pixel unit 11, the second filter layer 22 is further defined with a fourth through hole 222, the orthographic projection of the third through hole 212 on the array substrate 10 at least partially overlaps the orthographic projection of the fourth through hole 222 on the array substrate 10, at least part of the third filter layer 23 is arranged in the overlapping area of the third through hole 212 and the fourth through hole 222, and the corresponding pixel unit 11 of the third filter layer 23 can emit light through the third through hole 212 and the fourth through hole 222.

[0064] In some embodiments, one of the first filter layer 21 and the second filter layer 22 comprises a blue filter unit, and the other comprises a red filter unit, and the third filter layer 23 comprises a green filter unit.

[0065] In some embodiments, referring to Figure 2 , the overlapping parts of the first filter layer 21 and the second filter layer 22 jointly define a light blocking structure, the orthographic projection of the light blocking structure on the array substrate 10 is located between the adjacent two pixel units 11, that is, the overlapping parts of the first filter layer 21 and the second filter layer 22 are located between the adjacent two pixel units 11, so that the light blocking structure plays a role of absorbing light. It should be understood that the light blocking structure can realize the function of shading, and the light blocking structure has strong light absorption capacity and is used to realize the shading function between the adjacent two pixel units 11.

[0066] According to the technology of the present application, the light blocking structure is formed by overlapping the first filter layer 21 and the second filter layer 22 to replace the black matrix in the related art, which can reduce the manufacturing steps of the black matrix, thereby achieving the effects of saving cost and improving production efficiency. Further, the scheme of forming the light blocking structure by overlapping the first filter layer 21 and the second filter layer 22 to replace the black matrix in the related art does not affect the light emission of the pixel unit 11.

[0067] Figure 3Fig. 2 shows a structural schematic diagram of a second display panel 1 according to an embodiment of the present application, Figure 7 Fig. 6 shows a structural schematic diagram of a sixth display panel 1 according to an embodiment of the present application, in one embodiment, referring to Figure 3 and Figure 7 The first filter film layer 21 includes blue filter units, the second filter film layer 22 includes red filter units, and the third filter film layer 23 includes green filter units. The plurality of pixel units 11 at least include red sub-pixels, green sub-pixels, or blue sub-pixels. The pixel unit 11 corresponding to the first through-hole 211 is a red sub-pixel, the pixel unit 11 corresponding to the third through-hole 212 and the fourth through-hole 222 is a green sub-pixel, and the pixel unit 11 corresponding to the second through-hole 223 is a blue sub-pixel. The second filter structure 213 of the red filter unit is arranged in the first through-hole 211 and extends into the second groove body 34, the green filter unit is arranged in the third through-hole 212 and the fourth through-hole 222, and the first filter structure 221 of the blue filter unit extends into the first groove body 33.

[0068] Figure 4 Fig. 3 shows a structural schematic diagram of a third display panel 1 according to an embodiment of the present application, Figure 6 Fig. 5 shows a structural schematic diagram of a fifth display panel 1 according to an embodiment of the present application, in another embodiment, referring to Figure 4 and Figure 6 The first filter film layer 21 includes red filter units, the second filter film layer 22 includes blue filter units, and the third filter film layer 23 includes green filter units. The plurality of pixel units 11 at least include red sub-pixels, green sub-pixels, or blue sub-pixels. The pixel unit 11 corresponding to the first through-hole 211 is a blue sub-pixel, the pixel unit 11 corresponding to the third through-hole 212 and the fourth through-hole 222 is a green sub-pixel, and the pixel unit 11 corresponding to the second through-hole 223 is a red sub-pixel. The second filter structure 213 of the blue filter unit is arranged in the first through-hole 211 and extends into the second groove body 34, the green filter unit is arranged in the third through-hole 212 and the fourth through-hole 222, and the first filter structure 221 of the red filter unit extends into the first groove body 33.

[0069] Specifically, the filter film layer realizes rich color performance by controlling the color of light. The filter film layer usually includes three kinds of filter units, i.e., red filter units, green filter units, and blue filter units. The three kinds of filter units are also arranged in a certain order and are repeatedly arranged in the display panel 1.

[0070] It is worth mentioning that the filter film layer refers to a thin film that can reduce the transmitted light, wherein the thickness of the filter film layer has a certain influence on the intensity of the transmitted light. Generally, the thicker the thickness of the filter film layer, the stronger the filtering ability, i.e., the less the transmitted light. Therefore, the thickness of the filter film layer is selected according to the actual use in the specific implementation, which is not limited here.

[0071] In some embodiments, Figure 5 A structural schematic diagram of a fourth display panel 1 according to an embodiment of the present application is shown. Referring to FIG. 1C, Figure 3 and Figure 5 The insulating structure 30 defines a third groove 35, and at least part of the third filter film layer 23 is arranged in the third groove 35. In this way, the thickness of the first filter structure 221 in the direction perpendicular to the array substrate 10, the thickness of the second filter structure 213 in the direction perpendicular to the array substrate 10, and the thickness of the third filter film layer 23 in the direction perpendicular to the array substrate 10 can be matched. On the one hand, the present application can reduce the manufacturing steps of the black matrix, save costs, and improve production efficiency. On the other hand, the depth of the third groove 35 can be controlled to effectively control the thickness of the third filter film layer 23, so as to avoid increasing the overall thickness of the display panel 1 for adjusting the thickness of the color film structure 20, and effectively utilize the layout space in the display panel 1.

[0072] Figure 6 A structural schematic diagram of a fifth display panel 1 according to an embodiment of the present application is shown. In some embodiments, referring to FIG. 1D, Figure 6 The insulating structure 30 includes a touch barrier layer 313, a touch isolation layer 312, a first touch metal layer 311, and a second touch metal layer 314. The touch barrier layer 313 is arranged on one side of the array substrate 10. The first touch metal layer 311 is arranged on the side of the touch barrier layer 313 away from the array substrate 10. The touch isolation layer 312 is arranged on the side of the first touch metal layer 311 away from the array substrate 10. The second touch metal layer 314 is arranged on the side of the touch isolation layer 312 away from the array substrate 10. The first groove 33 and the second groove 34 are arranged in the touch isolation layer 312, respectively.

[0073] The first light filtering structure 221 is arranged in the first groove 33. The second light filtering structure 213 is arranged in the second groove 34. In the manufacturing process of the light filtering film layer, photoresist needs to be coated first, and then the photoresist is exposed and developed to realize patterning. The embodiments of the present application take advantage of the characteristic that the photoresist has a certain fluidity before exposure and development. First, the first groove 33 is formed in the touch isolation layer 312. Then, the first layer of photoresist is coated on one side of the touch isolation layer 312. The first layer of photoresist flows into the first groove 33 due to its fluidity. Finally, the first light filtering film layer 21 and the first light filtering structure 221 are formed by exposing and developing the first layer of photoresist. Further, the touch isolation layer 312 defines the second groove 34, and the second light filtering structure 213 is arranged in the second groove 34, that is, the second light filtering structure 213 of the second light filtering film layer 22 can extend into the second groove 34 through the first through hole 211. In the preparation process of the display panel 1, first, the second groove 34 is formed in the touch isolation layer 312. Then, the second layer of photoresist is coated on one side of the first light filtering film layer 21. The second layer of photoresist flows into the second groove 34 due to its fluidity. Finally, the second light filtering film layer 22 and the second light filtering structure 213 are formed by exposing and developing the second layer of photoresist.

[0074] According to the embodiments of the present application, the first layer of photoresist fills the entire first groove 33 and the second layer of photoresist fills the entire second groove 34, so that the present application can effectively control the thickness of the first light filtering structure 221 and the second light filtering structure 213 by controlling the depth of the first groove 33 and the second groove 34, thereby changing the absorption, reflection and transmission characteristics of the first light filtering structure 221 and the second light filtering structure 213 without changing the thickness of the first light filtering film layer 21 and the second light filtering film layer 22, and matching the dark state color phase and the bright state optical transmittance. In the scheme of forming a light blocking structure by stacking the first light filtering film layer 21 and the second light filtering film layer 22, the display panel 1 of the present application can reduce the manufacturing steps of the black matrix on one hand, saving cost and improving production efficiency, and on the other hand, effectively control the thickness of the first light filtering structure 221 and the second light filtering structure 213 by controlling the depth of the first groove 33 and the second groove 34, effectively utilize the layout space in the display panel 1, and avoid the case of increasing the overall thickness of the display panel 1 for adjusting the thickness of the color film structure 20.

[0075] In some embodiments, referring to Figure 5 , the array substrate 10 further includes a light emitting layer 12 and an encapsulation layer 13. The encapsulation layer 13 is arranged on one side of the light emitting layer 12. The touch barrier layer 313 is arranged on the side of the encapsulation layer 13 away from the light emitting layer 12.

[0076] Figure 8 Fig. 7 shows a structure schematic diagram of a seventh display panel according to an embodiment of the present application, Figure 9Fig. 8 shows a structural schematic diagram of a display panel according to an embodiment of the present application. In some embodiments, referring to Fig. 8, the display panel 1 comprises a first filter structure 221 and a second filter structure 213. The first filter structure 221 is arranged on the first slot 33, and the second filter structure 213 is arranged on the second slot 34. The first filter structure 221 and the second filter structure 213 are arranged on the array substrate 10. Figure 6 to Figure 9 The fourth slot 3131 is arranged on the touch blocking layer 313, and the orthographic projection of the first slot 33 on the array substrate 10 and the orthographic projection of the fourth slot 3131 on the array substrate 10 at least partially overlap. The first filter structure 221 is arranged on the first slot 33 and the fourth slot 3131. And / or, the fifth slot 3132 is arranged on the touch blocking layer 313, and the orthographic projection of the second slot 34 on the array substrate 10 and the orthographic projection of the fifth slot 3132 on the array substrate 10 at least partially overlap. The second filter structure 213 is arranged on the second slot 34 and the fifth slot 3132.

[0077] It should be noted that when the size of the first slot 33 in the direction perpendicular to the array substrate 10 meets the size requirement of the first filter structure 221, the first filter structure 221 only needs to extend to the first slot 33. When the size of the first slot 33 in the direction perpendicular to the array substrate 10 cannot meet the size requirement of the first filter structure 221, the first filter structure 221 can flow into the fourth slot 3131 when formed by connecting the first slot 33 and the fourth slot 3131, so as to further increase the thickness of the first filter structure 221 without increasing the overall thickness of the display panel 1. When the size of the second slot 34 in the direction perpendicular to the array substrate 10 meets the size requirement of the second filter structure 213, the second filter structure 213 only needs to extend to the second slot 34. When the size of the second slot 34 in the direction perpendicular to the array substrate 10 cannot meet the size requirement of the second filter structure 213, the second filter structure 213 can flow into the fifth slot 3132 when formed by connecting the second slot 34 and the fifth slot 3132, so as to further increase the thickness of the second filter structure 213 without increasing the overall thickness of the display panel 1.

[0078] It should be noted that this is only an example and does not constitute a limitation on the present application. Those skilled in the art can understand that the depth of the first slot 33 and the second slot 34 can be selected according to the size requirement of the first filter structure 221 and the second filter structure 213, and is not limited thereto.

[0079] In some embodiments, referring to Fig. 8, the display panel 1 comprises a first filter structure 221 and a second filter structure 213. The first filter structure 221 is arranged on the first slot 33, and the second filter structure 213 is arranged on the second slot 34. The first filter structure 221 and the second filter structure 213 are arranged on the array substrate 10. Figure 7 and Figure 8, the distance between the first light filtering film layer 21 and the array substrate 10 is less than the distance between the second light filtering film layer 22 and the array substrate 10, thus, if the first light filtering structure 221 and the second light filtering structure 213 extend to the first groove body 33 and the second groove body 34 respectively, the thickness of the first light filtering structure 221 will be less than the thickness of the second light filtering structure 213. Based on this, the fourth groove body 3131 is arranged on the touch blocking layer 313 of the present application, the orthographic projection of the first groove body 33 on the array substrate 10 and the orthographic projection of the fourth groove body 3131 on the array substrate 10 at least partially overlap, and the first light filtering structure 221 is arranged in the first groove body 33 and the fourth groove body 3131. In this way, the thickness of the first light filtering structure 221 can be increased by arranging the fourth groove body 3131, and the thickness of the first light filtering structure 221 and the thickness of the second light filtering structure 213 can be equalized, thereby avoiding the situation that the transmitted light is inconsistent due to the inconsistent thickness of the first light filtering structure 221 and the second light filtering structure 213.

[0080] It should be noted that this is only an example, and the fifth groove body 3132 can also be arranged on the touch blocking layer 313, the orthographic projection of the second groove body 34 on the array substrate 10 and the orthographic projection of the fifth groove body 3132 on the array substrate 10 at least partially overlap, the second light filtering structure 213 is arranged in the second groove body 34 and the fifth groove body 3132, and the first light filtering structure 221 is arranged in the first groove body 33.

[0081] In some embodiments, referring to Figure 5 The touch isolation layer 312 defines a third groove body 35, and at least part of the third light filtering film layer 23 is arranged in the third groove body 35, that is, the third light filtering film layer 23 extends into the third groove body 35 after passing through the third through hole 212 and the fourth through hole 222. In this way, the thickness adjustment range of the third light filtering film layer 23 can be improved, the layout space in the display panel 1 can be effectively utilized, and the situation that the overall thickness of the display panel 1 is increased due to the increase of the thickness of the third light filtering film layer 23 can be avoided.

[0082] For example, the encapsulation layer 13 can include a first inorganic encapsulation layer 13, an organic encapsulation layer 13 and a second inorganic encapsulation layer 13 arranged in sequence, but is not limited thereto.

[0083] In another embodiment, referring to Figure 2, the insulating structure 30 includes a flat layer 32 and a touch function layer 31, the touch function layer 31 is arranged on one side of the array substrate 10, the flat layer 32 is arranged on the side of the touch function layer 31 away from the array substrate 10, the first groove body 33 and the second groove body 34 are arranged on the flat layer 32 respectively, the first filter structure 221 is arranged on the first groove body 33, and the second filter structure 213 is arranged on the second groove body 34. In the manufacturing process of the filter film layer, photoresist needs to be coated first, and then the photoresist is exposed and developed to realize patterning. The embodiment of the application utilizes the characteristic that the photoresist has a certain fluidity before exposure and development. First, the first groove body 33 is formed on the flat layer 32, then the first layer of photoresist is coated on one side of the flat layer 32, the first layer of photoresist flows into the first groove body 33 due to the fluidity, and finally the first filter film layer 21 and the first filter structure 221 are formed by exposing and developing the first layer of photoresist.

[0084] Further, referring to Figure 3 , the flat layer 32 defines the second groove body 34, and the second filter structure 213 is arranged in the second groove body 34, that is, the second filter structure 213 of the second filter film layer 22 can extend into the second groove body 34 through the first through hole 211. In the preparation process of the display panel 1, first, the second groove body 34 is formed on the flat layer 32, then the second layer of photoresist is coated on one side of the first filter film layer 21, the second layer of photoresist flows into the second groove body 34 due to the fluidity, and finally the second filter film layer 22 and the second filter structure 213 are formed by exposing and developing the second layer of photoresist.

[0085] According to the embodiment of the application, the first layer of photoresist fills the entire first groove body 33 and the second layer of photoresist fills the entire second groove body 34, so that the application can effectively control the thickness of the first filter structure 221 and the second filter structure 213 by controlling the depth of the first groove body 33 and the second groove body 34, thereby changing the absorption, reflection and transmission characteristics of the first filter structure 221 and the second filter structure 213 without changing the thickness of the first filter film layer 21 and the second filter film layer 22, and matching the dark state color phase and the bright state optical transmittance. In the scheme of forming the light-blocking structure by using the first filter film layer 21 and the second filter film layer 22 in the display panel 1 of the application, on the one hand, the manufacturing steps of the black matrix can be reduced to save costs and improve production efficiency, and on the other hand, the thickness of the first filter structure 221 and the second filter structure 213 can be effectively controlled by controlling the depth of the first groove body 33 and the second groove body 34, the layout space in the display panel 1 can be effectively utilized, and the case of increasing the overall thickness of the display panel 1 for adjusting the thickness of the color film structure 20 can be avoided.

[0086] In some embodiments, referring to Figure 3The third groove 35 is defined on the side of the flat layer 32 away from the array substrate 10, and at least part of the third filter film layer 23 is arranged in the third groove 35, that is, the third filter film layer 23 extends into the third groove 35 after passing through the third through hole 212 and the fourth through hole 222. In this way, the thickness adjustment range of the third filter film layer 23 can be improved, the layout space in the display panel 1 can be effectively utilized, and the case that the thickness of the display panel 1 is increased due to the increase of the thickness of the third filter film layer 23 can be avoided.

[0087] In the embodiments of the present application, the above arrangement can also shorten the distance between the first filter structure 221 and the light-emitting functional layer, improve the viewing angle of the display panel 1, and further improve the light-emitting efficiency of the display panel 1.

[0088] In some embodiments, the size of the first filter film layer 21 in the direction perpendicular to the array substrate 10 is greater than or equal to 1 um, and / or the size of the second filter film layer 22 in the direction perpendicular to the array substrate 10 is greater than or equal to 1 um.

[0089] As another aspect of the present application, the embodiments of the present application also provide a preparation method of a display panel 1, which is used for preparing the display panel 1 of any one of the above embodiments, and the method comprises the following steps:

[0090] Providing an array substrate 10, the array substrate 10 comprising a plurality of pixel units 11 arranged in an array;

[0091] Preparing an insulating structure 30 on one side of the array substrate 10, the insulating structure 30 defining a groove;

[0092] Preparing a first filter film layer 21 on one side of the array substrate 10, forming a first through hole 211 on the first filter film layer 21, and the first filter film layer 21 comprising a first filter structure 221, the first filter structure 221 being used for transmitting light rays matching the color of the corresponding pixel unit 11;

[0093] Forming a second filter film layer 22 on the side of the first filter film layer 21 away from the array substrate 10, forming a second through hole 223 on the second filter film layer 22, and the second filter film layer 22 comprising a second filter structure 213, the second filter structure 213 being used for transmitting light rays matching the color of the corresponding pixel unit 11;

[0094] The orthographic projection of the first filter structure 221 on the array substrate 10 overlaps with the orthographic projection of the second through hole 223 on the array substrate 10, and the orthographic projection of the second filter structure 213 on the array substrate 10 overlaps with the orthographic projection of the first through hole 211 on the array substrate 10, and part of the first filter structure 221 or the second filter structure 213 is accommodated in the groove.

[0095] As another aspect of the present application, the embodiments of the present application also provide a display device comprising the display panel 1 according to any one of the above embodiments. Thus, the display device has all the features and advantages of the display panel 1 as described above, which will not be repeated here.

[0096] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0097] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0098] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, or communication; can be direct connection, or indirect connection through intermediate medium; can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0099] In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0100] The foregoing disclosure provides many different embodiments or examples for implementing different structures of the present application. For simplicity of disclosure, the foregoing description has focused on certain examples. In the interest of clarity, not all components of the examples described above are shown or described. Further, with respect to the methods disclosed, the steps presented are presented in an exemplary order. In some embodiments, the steps can be performed in a different order than those described. Further, some steps can be performed simultaneously. The order in which the steps are presented is not intended to be construed as a limitation, unless specifically specified. Also, it is to be understood that certain features can be incorporated into more than one embodiment. For example, various embodiments of the application can be used in conjunction with one another. Further, the embodiments described above can be used to form other structures not specifically described herein. Many modifications and variations of this application can be made in light of its teachings. Therefore, it is to be understood that within the scope of the claims and their equivalents, the application can be practiced otherwise than as specifically described herein.

[0101] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed by the present application, and these should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display panel, characterized in that, include: An array substrate includes multiple pixel units arranged in an array, wherein the multiple pixel units include a first pixel unit and a second pixel unit; An insulating structure is disposed on one side of the array substrate, the insulating structure defining a groove; A color filter structure includes a first filter layer and a second filter layer disposed on the side of the insulating structure opposite to the array substrate. The first filter layer has a first through-hole, and the second filter layer has a second through-hole. The first filter layer includes a first filter structure, and the orthographic projection of the first filter structure on the array substrate, the orthographic projection of the second through-hole on the array substrate, and the orthographic projection of the first pixel unit on the array substrate overlap. The second filter layer includes a second filter structure, and the orthographic projection of the second filter structure on the array substrate, the orthographic projection of the first through-hole on the array substrate, and the orthographic projection of the second pixel unit on the array substrate overlap. The first filter structure and / or a portion of the second filter structure are housed within the tank.

2. The display panel according to claim 1, characterized in that, The tank includes a first tank and a second tank, with a portion of the first filter structure housed in the first tank and a portion of the second filter structure housed in the first through hole and the second tank.

3. The display panel according to claim 2, characterized in that, The distance between the first filter layer and the array substrate is less than the distance between the second filter layer and the array substrate, and the dimension of the first groove perpendicular to the array substrate is greater than the dimension of the second groove perpendicular to the array substrate.

4. The display panel according to claim 2, characterized in that, The color filter structure further includes a third filter layer, and the first filter layer further defines a third through hole. The orthographic projection of the third through hole on the array substrate overlaps with the corresponding pixel unit. The second filter layer further defines a fourth through hole. At least a portion of the orthographic projection of the third through hole on the array substrate overlaps with the orthographic projection of the fourth through hole on the array substrate. At least a portion of the third filter layer is disposed in the overlapping area of ​​the third through hole and the fourth through hole.

5. The display panel according to claim 1, characterized in that, The overlapping portions of the first and second filter layers together define a light-blocking structure, and the orthographic projection of the light-blocking structure on the array substrate is located between two adjacent pixel units.

6. The display panel according to claim 4, characterized in that, One of the first and second filter layers includes a blue filter unit, the other includes a red filter unit, and the third filter layer includes a green filter unit.

7. The display panel according to claim 4, characterized in that, The insulating structure defines a third groove, and at least a portion of the third filter film layer is disposed in the third groove.

8. The display panel according to claim 4, characterized in that, The insulating structure includes a touch functional layer, which includes a touch blocking layer, a touch isolation layer, a first touch metal layer, and a second touch metal layer. The touch blocking layer is disposed on one side of the array substrate. The first touch metal layer is disposed on the side of the touch blocking layer away from the array substrate. The touch isolation layer is disposed on the side of the first touch metal layer away from the array substrate. The second touch metal layer is disposed on the side of the touch isolation layer away from the array substrate. The first groove and the second groove are respectively disposed on the touch isolation layer. The first filter structure is disposed on the first groove, and the second filter structure is disposed on the second groove.

9. The display panel according to claim 8, characterized in that, The touch blocking layer is provided with a fourth groove, and the orthographic projections of the first groove and the fourth groove on the array substrate at least partially overlap, and the first filter structure is disposed in the first groove and the fourth groove; and / or, the touch blocking layer is provided with a fifth groove, and the orthographic projections of the second groove and the fifth groove on the array substrate at least partially overlap, and the second filter structure is disposed in the second groove and the fifth groove.

10. The display panel according to claim 8, characterized in that, The distance between the first filter layer and the array substrate is smaller than the distance between the second filter layer and the array substrate; The touch blocking layer is provided with a fourth groove, and the orthographic projection of the first groove on the array substrate and the orthographic projection of the fourth groove on the array substrate at least partially overlap, and the first filter structure is disposed on the first groove and the fourth groove.

11. The display panel according to claim 8, characterized in that, The touch isolation layer defines a third groove, and at least a portion of the third filter film layer is disposed in the third groove.

12. The display panel according to claim 8, characterized in that, The array substrate further includes a light-emitting layer and an encapsulation layer; the encapsulation layer is disposed on one side of the light-emitting layer; the touch blocking layer is disposed on the side of the encapsulation layer away from the light-emitting layer.

13. The display panel according to claim 4, characterized in that, The insulating structure includes a planarization layer and a touch function layer. The touch function layer is disposed on one side of the array substrate, and the planarization layer is disposed on the side of the touch function layer opposite to the array substrate. The first groove and the second groove are respectively disposed on the planarization layer, the first filter structure is disposed on the first groove, and the second filter structure is disposed on the second groove.

14. The display panel according to claim 13, characterized in that, The planarization layer defines a third groove on the side opposite to the array substrate, and at least a portion of the third filter film layer is disposed in the third groove.

15. The display panel according to any one of claims 1 to 14, characterized in that, The first filter structure has a dimension greater than or equal to 1 μm in the direction perpendicular to the array substrate, and / or the second filter structure has a dimension greater than or equal to 1 μm in the direction perpendicular to the array substrate.

16. A display device, characterized in that, include: The display panel as described in any one of claims 1-15.

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