Display panel, manufacturing method thereof, and display device

Abstract

The present application discloses a display panel, a manufacturing method thereof, and a display device. The display panel according to an embodiment of the present application includes an array substrate and a color filter substrate. The color filter substrate includes a first substrate and a plurality of first main spacers disposed on a side of the first substrate close to the array substrate. The array substrate includes a second substrate and a plurality of second main spacers disposed on a side of the second substrate close to the color filter substrate. The first main spacers and the second main spacers are correspondingly disposed in the alignment direction. The color filter substrate further includes a color filter layer disposed on a side of the first substrate close to the first main spacers, including a plurality of sub-pixel regions distributed in an array and a plurality of black matrix regions separating the sub-pixel regions. The orthographic projections of the first main spacers and the second main spacers on the first substrate are both cross-shaped and both fall within the black matrix regions. The display panel provided by the present application improves the contact area between the two when pressed by providing the cross-shaped first main spacers and second main spacers, and improves the compressive resistance.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display panel, a manufacturing method thereof, and a display device. Background Art

[0002] With the rapid development of display technologies, the resolution of display devices has gradually increased from 200 PPI to 500 PPI, 1000 PPI, and 1500 PPI. Especially in the AR / VR field, the resolution requirement of devices has reached 2000+ PPI, which undoubtedly poses new challenges to the design and manufacturing processes. Considering pixel design, as the resolution increases, the sizes of various parts decrease accordingly. Taking 2000 PPI as an example, the size of each pixel is only 12.7 μm, and the size of each sub-pixel is 4.2 μm, which requires a complete pixel layout to be completed within a pixel size of 4.2 μm.

[0003] However, for liquid crystal display products, photo spacers (PS) for setting the cell thickness are required. The smaller the pixel size, the smaller the contact area of the PS, and the greater the contact pressure, increasing the risk of light leakage. Summary of the Invention

[0004] To solve at least one of the above problems, a first aspect of this application provides a display panel, including an array substrate and a color filter substrate arranged in a cell,

[0005] The color filter substrate includes a first substrate and a plurality of first main spacers arranged on a side of the first substrate close to the array substrate. The array substrate includes a second substrate and a plurality of second main spacers arranged on a side of the second substrate close to the color filter substrate. The first main spacers and the second main spacers are correspondingly arranged in the cell direction. Among them,

[0006] The color filter substrate further includes a color filter layer arranged on a side of the first substrate close to the first main spacers. The color filter layer includes a plurality of sub-pixel regions arranged in an array and a plurality of black matrix regions separating the sub-pixel regions.

[0007] The orthographic projections of the first main spacers and the second main spacers on the first substrate are both cross-shaped and both fall within the orthographic projection of the black matrix region on the first substrate.

[0008] In some optional embodiments, among them,

[0009] The array substrate includes gate lines extending in a first direction and data lines extending in a second direction perpendicular to the first direction.

[0010] The second main spacer includes a first strip portion and a second strip portion.

[0011] The extending direction of the projection of the first strip portion on the second substrate is the same as the first direction, and the extending direction of the projection of the second strip portion on the second substrate is the same as the second direction.

[0012] In some alternative embodiments, the array substrate further includes: a light-shielding layer disposed on the surface of the second main spacer close to the second substrate,

[0013] wherein the first direction is the width direction of the light-shielding layer, the length of the projection of the first strip portion on the second substrate is less than the length of the projection of the second strip portion on the second substrate,

[0014] the projection of the first strip portion on the second substrate falls within the projection of the light-shielding layer on the second substrate; or

[0015] wherein the second direction is the width direction of the light-shielding layer, the length of the projection of the second strip portion on the second substrate is less than the length of the projection of the first strip portion on the second substrate,

[0016] the projection of the second strip portion on the second substrate falls within the projection of the light-shielding layer on the second substrate.

[0017] In some alternative embodiments, the color filter substrate further includes: a plurality of first auxiliary spacers disposed on the side of the first substrate close to the array substrate, the height of the first main spacer is greater than or equal to 2.0 μm and less than or equal to 3.0 μm, and the height of the first auxiliary spacer is greater than or equal to 0.6 μm and less than or equal to 0.8 μm.

[0018] In some alternative embodiments, the ratio of the number of the first main spacers to the number of sub-pixels is: 2:10, and the ratio of the number of the first auxiliary spacers to the number of sub-pixels is: 4:10.

[0019] In some alternative embodiments, the array substrate further includes: a plurality of second auxiliary spacers disposed on the side of the second substrate close to the color filter substrate, and the projection of the second spacer on the second substrate is in a cross shape.

[0020] In some alternative embodiments, the material of the first main spacer is an organic substance, and the material of the second main spacer is a metal.

[0021] The second aspect of the present application provides a display device, including the display panel described above.

[0022] The third aspect of the present application provides a method for manufacturing the display panel described above, including:

[0023] Forming the array substrate and the color filter substrate respectively;

[0024] Aligning the array substrate and the color filter substrate, and the first main spacer and the second main spacer form a support when the color filter substrate and the array substrate are aligned.

[0025] In some alternative embodiments, separately forming the array substrate and the color filter substrate further includes:

[0026] Providing a first substrate;

[0027] Forming a color filter layer on the first substrate, the color filter layer including a plurality of sub-pixel regions distributed in an array and a plurality of black matrix regions separating the sub-pixel regions;

[0028] Forming a first material layer on the color filter layer and patterning the first material layer to form a first main spacer;

[0029] Forming a second material layer and patterning the second material layer to form a first auxiliary spacer.

[0030] The beneficial effects of the present application are as follows:

[0031] In view of the existing problems, the present application provides a display panel, a manufacturing method thereof, and a display device. By providing a plurality of first main spacers and a plurality of second main spacers that are correspondingly arranged during cell alignment, and the orthographic projections of the first main spacers and the second main spacers on the first substrate are both cross-shaped and both fall within the black matrix regions, the contact area between the first main spacers and the second main spacers can be increased, the compressive resistance of the spacers can be improved, and it can be avoided that after the display panel undergoes a high-strength external force impact during a reliability test or other situations, the pressure in the contact area of the spacers is too large, resulting in indentation at the contact part, thereby avoiding light leakage caused by scratching the alignment film and improving the display effect, and having a wide application prospect. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 and Figure 2 Showing a simulation effect diagram when the spacers of the array substrate and the color filter substrate of the display panel in the related art are in contact during cell alignment;

[0034] Figure 3 Showing a schematic cross-sectional view of the display panel according to the embodiment of the present application;

[0035] Figure 4 Showing a partial projection schematic diagram of the color filter substrate in the display panel according to the embodiment of the present application;

[0036] Figure 5Schematic diagram showing that the array substrate and the color filter substrate of the display panel according to an embodiment of the present application do not slide;

[0037] Figure 6 Schematic diagram showing that the array substrate and the color filter substrate of the display panel according to an embodiment of the present application slide relative to each other under external force impact;

[0038] Figure 7 Schematic diagram of a partial projection of the array substrate in the display panel according to an embodiment of the present application;

[0039] Figure 8 Schematic diagram showing that the array substrate and the color filter substrate of the display panel according to another embodiment of the present application do not slide;

[0040] Figure 9 Schematic diagram showing that the array substrate and the color filter substrate of the display panel according to another embodiment of the present application slide relative to each other under external force impact;

[0041] Figure 10 Schematic diagram of a partial projection of the array substrate in the display panel according to another embodiment of the present application;

[0042] Figure 11 Schematic cross-sectional view of the array substrate according to an embodiment of the present application; and

[0043] Figures 12 to 16 Flow chart showing the manufacturing process of the color filter substrate in the manufacturing method according to an embodiment of the present application. Detailed Description of the Invention

[0044] To illustrate the present application more clearly, the following further describes the present application in conjunction with preferred embodiments and the accompanying drawings. Similar components in the drawings are denoted by the same or similar reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present application.

[0045] It should be noted that the terms "having", "including", and "comprising" described in the present application are all open-ended meanings. That is, when describing that a module "has", "includes", or "comprises" a first element, a second element, and / or a third element, it means that the module includes other elements in addition to the first element, the second element, and / or the third element. In addition, the ordinal numbers such as "first", "second", and "third" in the present application are not intended to limit the specific order, but only to distinguish each part. Furthermore, the "same-layer setting" described in the present application means setting with the same process and the same material; the "forming B on component A" described in the present application may mean directly forming B on component A, or may also mean that there are other components or layers between component A and B.

[0046] In the related art, for liquid crystal display products, in addition to the conventional thin film transistor (TFT) and color filter (CF) pixel designs, it is also necessary to design photo spacers (PS) for supporting the cell gap. The PS mainly plays a role in supporting the array substrate and the color filter substrate in the liquid crystal display device to form a uniform liquid crystal cell. Currently, the conventional PS structure has a cylindrical morphology. Due to a certain height, after the liquid crystal alignment layer is formed, the liquid crystal will accumulate around the PS, resulting in chaotic liquid crystal orientation around the PS and causing light leakage; therefore, it is necessary to add a black matrix under the PS to block and ensure that the light leakage phenomenon disappears; however, for small-sized pixel layouts, the black matrix will cause a decrease in the aperture ratio of the device, ultimately reducing the device brightness and affecting the product quality.

[0047] In order to improve the reliability of the display product and ensure that the display panel passes external force (such as pressing, impact, dropping, etc.) tests, currently the PS changes from a cylindrical structure to a strip structure, and the spacers on the array substrate and the color filter substrate are vertically cross-arranged after the substrates are aligned. When aligning the substrates, the two come into contact to form a supporting effect. However, although this layout increases the contact area between one side and the alignment layer, the contact area of the PS is very small when the two sides are aligned.

[0048] Referring to Figure 1 and Figure 2 As shown in the simulation effect diagrams of

[0049] Taking the pixel size of 200 PPI as an example, for a pixel size of 2000 PPI, the pixel size is 4μm × 12μm, and the PS size is 2μm × 6μm. When aligning the substrates, because the overlapping area of the PS has a small contact area and a large pressure, the PS cross area is subject to a large stress, resulting in a large deformation at the contact part and obvious local depressions. This phenomenon will inevitably lead to uneven cell gap within the display range, uneven liquid crystal diffusion, and even cause the PS to touch and scratch the liquid crystal alignment layer, resulting in light leakage; at the same time, after external force pressing, the PS undergoes large plastic deformation, resulting in local blackening defects (black Gap), affecting the product quality.

[0049] To solve one of the above problems, a first aspect of the present application provides a display panel, including an array substrate and a color filter substrate that are aligned,

[0050] The color filter substrate includes a first substrate and a plurality of first main spacers disposed on a side of the first substrate close to the array substrate. The array substrate includes a second substrate and a plurality of second main spacers disposed on a side of the second substrate close to the color filter substrate. The first main spacers and the second main spacers are correspondingly disposed in the alignment direction. Among them,

[0051] The color filter substrate further includes a color filter layer disposed on a side of the first substrate close to the first main spacers. The color filter layer includes a plurality of sub-pixel regions distributed in an array and a plurality of black matrix regions separating the sub-pixel regions.

[0052] The orthographic projections of both the first main spacer and the second main spacer on the first substrate are cross-shaped and both fall within the orthographic projection of the black matrix region on the first substrate.

[0053] In this embodiment, by providing a plurality of first main spacers and a plurality of second main spacers that are correspondingly arranged during cell alignment, and the orthographic projections of the first main spacer and the second main spacer on the first substrate are both cross-shaped and both fall within the black matrix region, the contact area between the first main spacer and the second main spacer is increased when the color filter substrate and the array substrate are cell-aligned, the compressive resistance of the spacers is improved, and after a high-intensity external force impact during a reliability test or other conditions, the pressure in the contact area of the spacers is too large, resulting in indentation at the contact part, thereby avoiding light leakage caused by scratching the alignment film and improving the display effect, and having a wide application prospect.

[0054] In a specific example, referring to Figure 3 As shown, the display panel includes: a color filter substrate 10 and an array substrate 20 that are cell-aligned. Among them, the color filter substrate includes: a first substrate 100 and a plurality of first main spacers 101 provided on one side of the first substrate 100 close to the array substrate 20; the array substrate 20 includes a second substrate 200 and a plurality of second main spacers 201 provided on one side of the second substrate 200 close to the color filter substrate 10, and the first main spacers 101 and the second main spacers 201 are correspondingly arranged in the cell alignment direction.

[0055] Specifically, the material of the first main spacer 101 can be an organic material, and the material of the second main spacer 201 can be a metal material.

[0056] Continuing to refer to Figure 3 As shown, the color filter substrate 10 further includes a color filter layer provided on one side of the first substrate 100 close to the first main spacer 101. The color filter layer includes a plurality of sub-pixel regions 113 arranged in an array and a plurality of black matrix regions 123 that separate the sub-pixel regions.

[0057] Particularly, referring to Figures 4 to 6 As shown, the orthographic projections of both the first main spacer 101 and the second main spacer 201 on the first substrate 100 are cross-shaped and both fall within the orthographic projection of the black matrix region 123 on the first substrate 100.

[0058] Referring to Figure 5 As shown, for the originally cell-aligned color filter substrate 10 and array substrate 20, when not subjected to a strong external force, the first main spacer 101 and the second main spacer 201 are correspondingly arranged in the cell alignment direction, that is, the centers of the cross shapes overlap, and the orthographic projection of the first main spacer 101 on the first substrate 100 covers the orthographic projection of the second main spacer 201 on the first substrate 100. Referring to Figure 6As shown, when the display panel receives an impact from an external force, for example, when testing the reliability of the display panel by applying an external force (such as pressing, impact, dropping, etc.) to the display panel, if the color filter substrate 10 and the array substrate 20 of the cell slide due to the impact of the external force, the orthographic projection of the second main spacer 201 on the first substrate 100 will be misaligned with the orthographic projection of the first main spacer 101 on the first substrate 100, and the orthographic projection of the second main spacer 201 on the first substrate 100 will no longer completely fall within the orthographic projection of the black matrix region 123 on the first substrate 100.

[0059] Combined Figure 5 with Figure 6 It can be seen that by setting the structures of the first main spacer 101 and the second main spacer 201 to be cross-shaped in the orthographic projection on the first substrate 100 and corresponding to each other in the cell alignment direction, after the color filter substrate 10 and the array substrate 20 are aligned, the contact area between the first main spacer 101 and the second main spacer 201 is no longer just the bar-shaped intersection position, but forms at least one bar-shaped part of the cross-shaped structure as a whole. Thus, the contact area between the first main spacer 101 and the second main spacer 201 after cell alignment is significantly increased, thereby improving the compressive resistance of the spacers, improving the uniformity of the cell thickness and the uniformity of the liquid crystal distribution, and avoiding light leakage. Especially for high-PPI display products, by setting them to be cross-shaped structures corresponding to each other in the cell alignment direction and the orthographic projections on the first substrate 100 both fall within the orthographic projection of the black matrix region 123 on the first substrate 100, while improving the compressive resistance of the spacers, the aperture ratio of the display product is not reduced.

[0060] More importantly, the inventors found through a large number of experiments that when the color filter substrate and the array substrate are displaced due to an external force impact, they both naturally slide along a direction parallel to the extension direction of the gate line (the X direction in the figure). Therefore, referring to Figure 6 As shown, by setting the structures of the first main spacer 101 and the second main spacer 201 to be cross-shaped in the orthographic projection on the first substrate 100 and corresponding to each other in the cell alignment direction, even if the color filter substrate 10 and the array substrate 20 slide due to an external force such as pressing, at the moment of sliding and misalignment, the contact area between the first main spacer 101 and the second main spacer 201 at least still retains the orthographic projection area of one bar-shaped part. Therefore, compared with the related art, the contact area between the first main spacer 101 and the second main spacer 201 is significantly increased, the compressive resistance is significantly improved, the contact deformation between the two is avoided, the uniformity of the display panel is improved, the risk of scratching and light leakage of the liquid crystal alignment layer is reduced, and the cell gap strength is improved.

[0061] Specifically, referring to Figure 5 and Figure 6As shown, the array substrate 200 includes gate lines extending in a first direction (the X direction in the figure) and data lines extending in a second direction (the Y direction in the figure) perpendicular to the first direction (X direction). The second main spacer 201 includes a first strip portion 211 and a second strip portion 221. The extending direction of the orthographic projection of the first strip portion 211 on the second substrate 200 is the same as the X direction, and the extending direction of the orthographic projection of the second strip portion 221 on the second substrate 200 is the same as the Y direction. Additionally, it can be understood that since the first main spacer 101 and the second main spacer 201 are correspondingly arranged in the alignment direction, the first main spacer 101 also includes two strip portions, which can be referred to as a third strip portion and a fourth strip portion. Among them, the extending direction of the orthographic projection of the third strip portion on the second substrate 200 is the same as the X direction, and the extending direction of the orthographic projection of the fourth strip portion on the second substrate 200 is the same as the Y direction.

[0062] Through this setting, the extending direction of the orthographic projection of the first strip portion 211 on the second substrate 200 is consistent with the extending direction of the gate line. Thus, when a sliding occurs in the gate line direction between the array substrate 20 and the color filter substrate 10 due to an external force impact, it ensures that the contact area between the first main spacer 101 and the second main spacer 201 is the orthographic projection area of the first strip portion 211 on the second substrate 200.

[0063] More specifically, continuing to refer to Figure 3 、 Figures 5 to 7 As shown, the array substrate 20 further includes: a light-shielding layer 202 disposed on the surface of the second main spacer 201 close to the second substrate 200. Among them, the X direction is the width direction of the light-shielding layer 202. The orthographic projection length of the first strip portion 211 on the second substrate 200 is less than the orthographic projection length of the second strip portion 221 on the second substrate 200; the orthographic projection of the first strip portion 211 on the second substrate 200 falls within the orthographic projection of the light-shielding layer 202 on the second substrate. That is to say, although the pattern of the second main spacer 201 is set as a cross shape, the length of the first strip portion 211 is limited by the width direction of the light-shielding layer 202, and its length does not exceed the width of the light-shielding layer 202.

[0064] In another alternative embodiment, in order to further increase the contact area between the first main spacer 101 and the second main spacer 201, the arrangement direction of the light-shielding layer and the structure of the second main spacer are adjusted.

[0065] Specifically referring to Figure 8 and Figure 9As shown, the second main spacer includes a first strip portion 211' and a second strip portion 221'. The extending direction of the orthographic projection of the first strip portion 211' on the second substrate 200 is the same as the first direction (X direction), and the extending direction of the orthographic projection of the second strip portion 221' on the second substrate 200 is the same as the second direction (Y direction). Similarly, it can be understood that since the first main spacer 101 and the second main spacer 201 are correspondingly arranged in the cell alignment direction, the first main spacer 101 also includes two strip portions, which can be called a third strip portion and a fourth strip portion. Among them, the extending direction of the orthographic projection of the third strip portion on the second substrate 200 is the same as the X direction, and the extending direction of the orthographic projection of the fourth strip portion on the second substrate 200 is the same as the Y direction.

[0066] Further referring to Figure 10 As shown, the array substrate 20 further includes: a light-shielding layer 202' disposed on the surface of the second main spacer 201 close to the second substrate 200. Among them, the Y direction is the width direction of the light-shielding layer 202', and the length of the orthographic projection of the second strip portion 221' on the second substrate 200 is less than the length of the orthographic projection of the first strip portion 211' on the second substrate 200; the orthographic projection of the second strip portion 221' on the second substrate 200 falls within the orthographic projection of the light-shielding layer 202' on the second substrate.

[0067] With the above settings, although limited by the width of the light-shielding layer, the length of the strip portion arranged along the width direction of the light-shielding layer is still set to not exceed the width of the light-shielding layer. However, by changing the arrangement direction of the light-shielding layer so that its width direction is the Y direction, and at the same time adjusting the structure of the second main spacer, the second strip portion 221' is made into a shorter strip portion. Referring to Figure 9 It can be seen that the extending direction of the orthographic projection of the first strip portion 211' on the second substrate 200 is made consistent with the extending direction of the gate line. Thus, when a sliding occurs along the gate line direction between the array substrate 20 and the color filter substrate 10 due to an external force impact, it is ensured that the contact area between the first main spacer 101 and the second main spacer 201' is the orthographic projection area of the first strip portion 211' with a larger area on the second substrate 200. Therefore, compared with the previous embodiment, the contact area between the two is further increased, and when receiving an external force impact, it has a better effect in avoiding abutment deformation and stronger compressive resistance.

[0068] Further optionally, referring to Figure 3 As shown, in order to further provide the supporting force after cell alignment and improve cell uniformity, the color filter substrate 10 further includes: a plurality of first auxiliary spacers 102 disposed on the side of the first substrate 100 close to the array substrate 20. Optionally, the material of the first auxiliary spacer 102 is also an organic material.

[0069] More preferably, in order to increase the fluidity of the liquid crystal, the height of the first main spacer 102 is less than the height of the first main spacer 102. For the current product, optionally, the height of the first main spacer 102 is greater than or equal to 2.0 μm and less than or equal to 3.0 μm, and the height of the first auxiliary spacer is greater than or equal to 0.6 μm and less than or equal to 0.8 μm. Preferably, the height of the first main spacer 102 is 2.8 μm, and the height of the first auxiliary spacer is 0.6 μm.

[0070] Even more preferably, in order to optimize the supporting effect of the first spacer 101 and the first auxiliary spacer 102 on the liquid crystal cell and the overall uniformity, the ratio of the number of the first main spacers 101 to the number of sub-pixels is: 2:10, and the ratio of the number of the first auxiliary spacers 102 to the number of the sub-pixels is: 4:10.

[0071] In some other alternative embodiments, the supporting uniformity is further enhanced by providing a second auxiliary spacer, that is, a second auxiliary spacer is provided at the position of the first auxiliary spacer 102. The orthographic projection of the second auxiliary spacer on the second substrate is also cross-shaped to improve the compressive resistance. The specific second spacer is not shown and will not be elaborated here.

[0072] Corresponding to the same inventive concept, an embodiment of the present application further provides a method for manufacturing the display panel described in the above embodiments, including:

[0073] Forming the array substrate and the color filter substrate respectively;

[0074] Aligning the array substrate and the color filter substrate, and the first main spacer and the second main spacer form a support when the color filter substrate and the array substrate are aligned.

[0075] In this embodiment, by forming a plurality of first main spacers and a plurality of second main spacers that are correspondingly arranged in the alignment direction, and the orthographic projections of the first main spacer and the second main spacer on the first substrate are both cross-shaped and both fall within the black matrix area, the contact area between the first main spacer and the second main spacer can be increased, the compressive resistance of the spacer can be improved, and it can be avoided that after the display panel undergoes a high-intensity external force impact during the reliability test or other situations, the pressure at the contact area of the spacer is too large, resulting in a depression at the contact part, thereby avoiding light leakage caused by scratching the alignment film and improving the display effect.

[0076] The following combines Figures 11 to 16 , taking Figure 3 the shown display panel as an example to describe the specific manufacturing process. Among them, for the convenience of understanding, in Figure 11A specific example of the driving circuit layer 203 in the array substrate 20 is shown in the cross-sectional view. It should be noted that the cross-sectional view only exemplarily shows a thin film transistor formed based on the first gate layer as the gate in the LTPO display panel. In addition, another thin film transistor formed based on the second gate layer as the gate may also be included. It should be understood by those skilled in the art that this is only exemplary and is not intended to limit the specific circuit structure in the driving circuit layer. In addition, the specific transistor structure in the array substrate may also vary according to the type of display panel (e.g., LTPS display panel).

[0077] Specifically, refer to Figure 11 As shown, the formation process of the array substrate 20 includes forming various layers in the driving circuit layer 203 by deposition and patterning on the second substrate 200. Before forming the driving circuit layer 203, at least one buffer layer 204 needs to be formed on the second substrate 200.

[0078] like Figure 11 As shown, from the second substrate 200 to the light shielding layer 202, the driving circuit layer 203 includes: an active layer 213, a gate insulating layer 223, a gate 233, a first dielectric layer 243, a source 253 (SD1), a passivation insulating layer (PVX) 263, and a drain (SD2) 273.

[0079] Among them, the active layer 213 is a polysilicon layer, the material of the gate insulating layer 223 can be other inorganic insulating materials such as silicon oxide, silicon nitride or silicon oxynitride, and the gate insulating layer 223 can be a single layer or a multilayer structure. The material of the gate 233 can also be a single layer or a multilayer metal structure, and the film layer can be selected from one of molybdenum / aluminum / molybdenum (Mo / Al / Mo), molybdenum / copper (Mo / Cu), molybdenum niobium alloy / copper (MoNb / Cu), molybdenum niobium alloy / copper / molybdenum titanium alloy (MoNb / Cu / MoTi) or a stack thereof. A through hole is formed after the first dielectric layer 243, and a source 253 is formed by magnetron sputtering a metal layer. After the passivation insulating layer 263, a through hole is formed again, and a drain 273 is formed by magnetron sputtering a metal layer. The film layer combination of the source 253 and the drain 273 can be selected from one of Mo / Al / Mo, Mo / Cu, MoNb / Cu, MoNb / Cu / MoTi, etc. or a stack thereof.

[0080] After that, on top of the driving circuit layer 203, the following are formed in sequence: the first planarization layer 205, the pixel electrode connection layer 206, the pixel electrode 207, and the second planarization layer 208. Among them, the pixel electrode connection layer 206 is formed by forming a through hole in the first planarization layer 205. The pixel electrode connection layer 206 serves as a signal transfer layer to provide the electrical signal provided by the drain to the pixel electrode 207. After forming the pixel electrode connection layer 206, the through hole is planarized by filling an insulating material. In addition, it should be noted that the common electrode connected to the ground signal is not shown in the figure for simplicity.

[0081] After forming the driving circuit layer 203, a light-shielding layer 202 is formed by depositing and patterning on the second planarization layer 208 to block stray light when the liquid crystal is disordered; then a first main spacer 101 is formed by magnetron sputtering a metal layer and patterning using a fine metal mask (FMM) to form the array substrate 20.

[0082] Furthermore, a color filter substrate 10 is formed.

[0083] A first substrate 100 is provided, and the material of the first substrate 100 can be glass; a color filter layer, a sub-pixel region, and a black matrix region are formed on the first substrate 100.

[0084] Specifically, referring to Figure 12 As shown, first, a black matrix material layer is coated on the first substrate 100, and the black matrix region 123 is formed through photolithography, curing, and development. Referring to Figure 13 As shown, between the black matrix regions 123, sub-pixel regions 113 of various colors (for example, red, green, blue) are sequentially formed by an inkjet printing method to form the color filter layer.

[0085] Furthermore, a first main spacer is formed on the color filter layer.

[0086] Specifically, referring to Figure 14 As shown, a planarization layer 105 is formed on the color filter layer, and the planarization layer 105 is an organic material; referring to Figure 15 As shown, a first material layer is formed on the planarization layer 105, and the first material layer is patterned to form the first main spacer 101. The first material layer is an organic material, and the patterning method is photolithography, curing, and development.

[0087] Referring to Figure 16 As shown, a second material layer is formed and patterned to form the first auxiliary spacer 102. The second material layer is also an organic material, and the patterning method is photolithography, curing, and development.

[0088] Based on the same inventive concept, an embodiment of the present application further provides a display device, including the display panel as described in the above embodiments. Since the display panel included in the display device provided in the embodiment of the present application corresponds to the display panels provided in the above several embodiments, the previous implementation manners are also applicable to the usage method provided in this embodiment, and will not be described in detail in this embodiment.

[0089] In this embodiment, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, or a navigator.

[0090] In view of the existing problems at present, the present application formulates a display panel, a manufacturing method thereof, and a display device. By providing a plurality of first main spacers and a plurality of second main spacers that are correspondingly arranged during cell alignment, and the orthographic projections of the first main spacers and the second main spacers on the first substrate are both cross-shaped and both fall within the black matrix area, the contact area between the first main spacers and the second main spacers can be increased, the compressive resistance of the spacers can be improved, and it can be avoided that after the display panel undergoes a reliability test or other high-intensity external force impacts, the pressure in the contact area of the spacers is too large, resulting in indentation at the contact part, thereby avoiding light leakage caused by scratching the alignment film and improving the display effect, and having a wide application prospect.

[0091] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, rather than limitations on the implementation manners of the present application. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A display panel, characterized in that, Including an array substrate and a color filter substrate provided for a cell, The color filter substrate includes a first substrate and a plurality of first main spacers provided on a side of the first substrate close to the array substrate. The array substrate includes a second substrate and a plurality of second main spacers provided on a side of the second substrate close to the color filter substrate. The first main spacers and the second main spacers are correspondingly arranged in the cell alignment direction. A positive projection of the first main spacers on the first substrate covers a positive projection of the second main spacers on the first substrate. Wherein, The color filter substrate further includes a color filter layer provided on a side of the first substrate close to the first main spacers. The color filter layer includes a plurality of sub-pixel regions distributed in an array and a plurality of black matrix regions separating the sub-pixel regions. Positive projections of the first main spacers and the second main spacers on the first substrate are both cross-shaped and both fall within a positive projection of the black matrix regions on the first substrate. The array substrate includes gate lines extending in a first direction and data lines extending in a second direction perpendicular to the first direction. The second main spacers include a first strip portion and a second strip portion. An extending direction of a positive projection of the first strip portion on the second substrate is the same as the first direction. An extending direction of a positive projection of the second strip portion on the second substrate is the same as the second direction. The array substrate further includes: a light-shielding layer provided on a surface of the second main spacers close to the second substrate. Wherein, the first direction is a width direction of the light-shielding layer. A length of a positive projection of the first strip portion on the second substrate is less than a length of a positive projection of the second strip portion on the second substrate. The positive projection of the first strip portion on the second substrate falls within the positive projection of the light-shielding layer on the second substrate. A length of the first strip portion does not exceed the width of the light-shielding layer; or Wherein, the second direction is a width direction of the light-shielding layer. A length of a positive projection of the second strip portion on the second substrate is less than a length of a positive projection of the first strip portion on the second substrate. The positive projection of the second strip portion on the second substrate falls within the positive projection of the light-shielding layer on the second substrate. A length of the second strip portion does not exceed the width of the light-shielding layer.

2. The display panel according to claim 1, wherein The color filter substrate further includes: a plurality of first auxiliary spacers provided on a side of the first substrate close to the array substrate. A height of the first main spacers is greater than or equal to 2.0 µm and less than or equal to 3.0 µm. A height of the first auxiliary spacers is greater than or equal to 0.6 µm and less than or equal to 0.8 µm.

3. The display panel according to claim 2, characterized in that, A ratio of a quantity of the first main spacers to a quantity of the sub-pixel regions is: 2:

10. A ratio of a quantity of the first auxiliary spacers to a quantity of the sub-pixel regions is: 4:

10.

4. The display panel according to claim 1, wherein The array substrate further includes: a plurality of second auxiliary spacers provided on a side of the second substrate close to the color filter substrate. A positive projection of the second auxiliary spacers on the second substrate is cross-shaped.

5. The display panel according to any one of claims 1-4, characterized in that, The material of the first main spacers is an organic substance. The material of the second main spacers is a metal.

6. A display device, comprising a display panel as described in any one of claims 1-5.

7. A method for manufacturing a display panel according to any one of claims 1-5, characterized in that, Comprising: Forming the array substrate and the color filter substrate respectively; Aligning the array substrate and the color filter substrate, and the first main spacer and the second main spacer form a support when the color filter substrate and the array substrate are aligned.

8. The method according to claim 7, wherein The color filter substrate further comprises: a plurality of first auxiliary spacers disposed on a side of the first substrate close to the array substrate, and the forming the array substrate and the color filter substrate respectively further comprises: Providing the first substrate; Forming a color filter layer on the first substrate, the color filter layer comprising a plurality of sub-pixel regions distributed in an array and a plurality of black matrix regions separating the sub-pixel regions; Forming a first material layer on the color filter layer and patterning the first material layer to form the first main spacer; Forming a second material layer and patterning the second material layer to form the first auxiliary spacer.

Images