Display substrate and method for manufacturing the same, and display device

Abstract

Embodiments of the present disclosure provide a display substrate and a preparation method thereof, and a display device, and relate to the technical field of display, and can improve the quality and display effect of the display device. The display substrate has a display area and an encapsulation area surrounding the display area. The display panel includes a substrate and a spacer layer. The spacer layer is located on one side of the substrate, and the spacer layer includes a plurality of first columnar spacers located in the encapsulation area and spaced around the display area. The bottom ends of the plurality of first columnar spacers are fixedly arranged on the substrate. The end of the plurality of first columnar spacers close to the substrate is the bottom end, and the end of the plurality of first columnar spacers away from the substrate is the top end.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display substrate, a method for preparing the same, and a display device. Background Technology

[0002] With the development of display technology, flat panel display devices such as liquid crystal displays (LCDs) have become the mainstream display devices due to their advantages such as clear picture quality, low power consumption, thin body and wide range of applications. They are widely used in various products that require display functions, such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, and desktop computers. Summary of the Invention

[0003] The embodiments of this disclosure provide a display substrate and a method for manufacturing the same, as well as a display device, which can improve the quality and display effect of the display device.

[0004] To achieve the above objectives, the embodiments of this disclosure adopt the following technical solutions:

[0005] On one hand, a display panel is provided. The display substrate has a display area and an encapsulation area surrounding the display area. The display panel includes a substrate and a spacer layer.

[0006] The spacer layer is located on one side of the substrate. The spacer layer includes a plurality of first columnar spacers located in the encapsulation area and spaced apart around the display area. The bottom ends of the plurality of first columnar spacers are fixedly disposed on the substrate. The bottom end of the plurality of first columnar spacers is closer to the substrate, and the top end is farther away from the substrate.

[0007] In some embodiments, the distances from the top of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers are equal or approximately equal.

[0008] In some embodiments, the distances from the bottom ends of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers are equal or approximately equal, and the heights of the plurality of first columnar spacers are equal or approximately equal.

[0009] In some embodiments, the spacer layer further includes a plurality of second columnar spacers located in the display area and spaced apart, the bottom ends of the plurality of second columnar spacers being fixedly disposed on the substrate; wherein, the end of the plurality of second columnar spacers closer to the substrate is its bottom end, and the end farther from the substrate is its top end.

[0010] The distance from the bottom end of the plurality of second columnar spacers to the side surface of the substrate away from the plurality of second columnar spacers is equal to or approximately equal to the distance from the bottom end of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers, and / or the heights of the plurality of first columnar spacers and the plurality of second columnar spacers are equal or approximately equal.

[0011] In some embodiments, the spacer layer further includes a plurality of second columnar spacers located in the display area and spaced apart, the bottom ends of the plurality of second columnar spacers being fixedly disposed on the substrate; wherein, the end of the plurality of second columnar spacers closer to the substrate is its bottom end, and the end farther from the substrate is its top end.

[0012] The distance from the top of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers is equal to or approximately equal to the distance from the top of the plurality of second columnar spacers to the side surface of the substrate away from the plurality of second columnar spacers.

[0013] In some embodiments, the display substrate further includes a filter layer and a support layer.

[0014] A filter layer is located between the plurality of second columnar spacers and the substrate, and the filter layer includes filter patterns of various colors.

[0015] A support layer is located between the plurality of first columnar spacers and the substrate, the support layer comprising a support pattern of at least one color, the material of each support pattern being the same as the material of any one of a plurality of different colored filter patterns.

[0016] In some embodiments, the support layer includes a plurality of hollow areas and a plurality of support patterns, wherein the thickness of the plurality of support patterns is equal to or approximately equal to the thickness of the filter pattern.

[0017] In some embodiments, the multiple support patterns are of the same color.

[0018] In some embodiments, the support layer has no open areas, and the thickness of the support layer is less than the thickness of the filter pattern.

[0019] In some embodiments, the display substrate further includes a black matrix layer located on the substrate; the projections of the plurality of first columnar spacers on the substrate and the projections of the plurality of second columnar spacers on the substrate are both within the projection of the black matrix layer on the substrate.

[0020] In some embodiments, the plurality of first columnar septa and the plurality of second columnar septa are made of the same material.

[0021] On the other hand, a display device is provided. The display device includes a display panel as described in any of the above embodiments.

[0022] In another aspect, a method for fabricating a display substrate is provided. The method for fabricating the display substrate includes: forming a first thin film on a substrate, and patterning the first thin film to form a plurality of first columnar spacers spaced apart; wherein the plurality of first columnar spacers are located in the encapsulation region.

[0023] In some embodiments, when the first thin film is patterned to form the plurality of first columnar spacers, a plurality of second columnar spacers are simultaneously formed at intervals, and the plurality of second columnar spacers are located in the display area. The distance from the bottom end of the plurality of second columnar spacers to the side surface of the substrate away from the plurality of second columnar spacers is equal to or approximately equal to the distance from the bottom end of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers, and / or, the heights of the plurality of first columnar spacers and the plurality of second columnar spacers are equal or approximately equal; wherein, the end of the plurality of first columnar spacers closest to the substrate is its bottom end, and the end of the plurality of second columnar spacers closest to the substrate is its bottom end.

[0024] In some embodiments, when the first thin film is patterned to form the plurality of first columnar spacers, a plurality of second columnar spacers are simultaneously formed at intervals, and the plurality of second columnar spacers are located in the display area. The distance from the top of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers is equal to or approximately equal to the distance from the top of the plurality of second columnar spacers to the side surface of the substrate away from the plurality of second columnar spacers; wherein, the end of the plurality of first columnar spacers away from the substrate is its top, and the end of the plurality of second columnar spacers away from the substrate is its top.

[0025] In some embodiments, before forming the first thin film, the method for preparing the display substrate further includes: forming a second thin film on one side of the substrate, and patterning the second thin film to form a filter layer and a support layer; the filter layer includes filter patterns of multiple colors; the support layer includes a support pattern of at least one color, and the material of each support pattern is the same as the material of any one of the multiple filter patterns of different colors.

[0026] In some embodiments, when the second thin film is patterned to form a filter layer and a support layer, the formed support layer further includes a plurality of hollow areas.

[0027] In some embodiments, the formed support layer further includes a plurality of support patterns, the thickness of which is equal to or approximately equal to the thickness of the filter pattern.

[0028] In some embodiments, the plurality of support patterns included in the formed support layer are of the same color.

[0029] This disclosure provides a display substrate, its fabrication method, and a display device. The display substrate includes a spacer layer comprising a plurality of first columnar spacers located in the encapsulation region and spaced apart around the display region. The bottom ends of the plurality of first columnar spacers are fixedly disposed on the substrate. The positions of the plurality of first columnar spacers are fixed; when the display panel is subjected to force, the positions of the plurality of first columnar spacers will not move, and there is no randomness. Furthermore, the heights of the first columnar spacers can be set to be the same or different, and the distances between the bottom and / or top ends of the first columnar spacers and the substrate can also be set to be the same or different, to accommodate different cell requirements and cell thicknesses between the display substrate and the opposing substrate, ensuring that the two opposing surfaces of the display panel are parallel or approximately parallel, avoiding light leakage or edge mura at the edges of the display substrate and the opposing substrate, and all the first columnar spacers provide support. Therefore, the display panel of this disclosure has better quality and display effect, and stronger pressure resistance. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0031] Figure 1 A structural diagram of a display panel provided for some embodiments of this disclosure;

[0032] Figure 2A A structural diagram of a display substrate provided for some embodiments of this disclosure;

[0033] Figures 2B-2E for Figure 2A Cross-sectional view along the AA′ direction;

[0034] Figure 2F Another structural diagram of a display substrate provided for some embodiments of this disclosure;

[0035] Figure 2G for Figure 2FCross-sectional view along the BB′ direction;

[0036] Figure 3A A structural diagram of a display substrate provided in related technologies;

[0037] Figure 3B for Figure 3A Cross-sectional view along the CC′ direction;

[0038] Figure 3C A display panel provided for related technologies;

[0039] Figure 4A Another structural diagram of a display substrate provided for some embodiments of this disclosure;

[0040] Figures 4B-4E for Figure 4A Cross-sectional view in the DD′ direction;

[0041] Figure 5A Another structural diagram of a display substrate provided for some embodiments of this disclosure;

[0042] Figure 5B for Figure 5A Cross-sectional view in the EE′ direction;

[0043] Figure 5C Another structural diagram of a display substrate provided for some embodiments of this disclosure;

[0044] Figure 5D for Figure 5C Cross-sectional view in the FF′ direction;

[0045] Figure 5E for Figure 5D Enlarged view of point O in the middle;

[0046] Figure 5F Another structural diagram of a display substrate provided for some embodiments of this disclosure;

[0047] Figure 5G for Figure 5F Cross-sectional view along the GG′ direction;

[0048] Figure 6 A structural diagram of a display panel provided for some embodiments of this disclosure;

[0049] Figures 7A-7G This is a schematic diagram illustrating the fabrication process of a display substrate provided for some embodiments of the present disclosure. Detailed Implementation

[0050] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0051] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0052] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0053] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0054] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0055] As used herein, depending on the context, the term “if” may optionally be interpreted as meaning “when”, “in the event of”, “in response to determination”, or “in response to detection”. Similarly, depending on the context, the phrase “if it is determined that…” or “if [the stated condition or event] is detected” may optionally be interpreted as meaning “in the event of determination that…”, “in response to determination that…”, “when [the stated condition or event] is detected”, or “in response to the detection of [the stated condition or event]”.

[0056] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0057] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0058] As used herein, “about” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0059] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0060] This disclosure provides a display device, which may be, for example, a display panel or a combination of a display panel and a backlight; wherein the display panel is, for example, a liquid crystal display panel, and the backlight is, for example, a direct-lit backlight or a side-lit backlight.

[0061] like Figure 1 As shown, the display panel 1 has a display area 100 and an encapsulation area 101 surrounding the display area. The display panel 1 includes, for example, a display substrate 10 and an opposing substrate 11 disposed opposite each other, and a liquid crystal layer 12 located between the display substrate 10 and the opposing substrate 11.

[0062] Among them, the display substrate 10 further includes a first columnar spacer 1031 disposed in the encapsulation region 101, and the first columnar spacer 1031 is used to maintain the cell gap of the liquid crystal layer 12.

[0063] A sealant 105 is further provided between the display substrate 10 and the counter substrate 11. The sealant 105 is located in the encapsulation region 101, and the sealant 105 is used to encapsulate the liquid crystal molecules in the liquid crystal layer 12 between the display substrate 10 and the counter substrate 11.

[0064] As Figures 2A-2G shown, in some embodiments, the display substrate 10 also has a display area 100 (Active Area, AA) and an encapsulation region 101 surrounding the display area 100.

[0065] In some embodiments, the display area 100 is, for example, a rectangular area, and the encapsulation region 101 is disposed around the display area 100, for example, a "frame" - shaped area. Here, "surrounding" means surrounding in a circle.

[0066] In some other embodiments, as Figures 2F-2G shown, the display panel 1 has a display area 100, a dummy pixel area 104 surrounding the display area 100, and an encapsulation region 101 surrounding the dummy pixel area 104. The display area 100 is, for example, a rectangular area, and the dummy pixel area 104 and the encapsulation region 101 are, for example, both "frame" - shaped areas. In this structure, the encapsulation region 101 still surrounds the display area 100 in a circle.

[0067] As Figures 2A-2G shown, the display substrate 10 includes:

[0068] A substrate 102; the substrate 102 is, for example, a glass substrate 102.

[0069] A spacer layer 103 is located on one side of the substrate 102. The spacer layer 103 includes a plurality of first columnar spacers 1031 that are spaced apart and distributed in the encapsulation region 101 and surround the display area 100. The bottom ends of the plurality of first columnar spacers 1031 are fixedly disposed on the substrate 102. Among them, the end of the plurality of first columnar spacers 1031 close to the substrate 102 is its bottom end, and the end far from the substrate 102 is its top end.

[0070] The spacer layer 103 includes a plurality of first columnar spacers 1031 that are spaced apart and distributed in the encapsulation region 101 and surround the display area 100. For example, it includes Figures 2A-2E the case where the encapsulation region 101 and the display area 100 are adjacent as shown, and Figure 2F and Figure 2GThe encapsulation area 101 shown surrounds the auxiliary pixel area 104, and the auxiliary pixel area 104 surrounds the display area 100. In other words, this disclosure does not limit the encapsulation area 101 to be adjacent to the display area 100.

[0071] For example, the first columnar spacer 1031 has a structure of a frustum or a truncated cone, wherein the upper and lower surfaces of the frustum can be circular or elliptical; the upper and lower surfaces of the truncated cone can be rectangular. When the structure of the first columnar spacer 1031 is a frustum or a truncated cone, the longitudinal section of the first columnar spacer 1031 is trapezoidal, and the length of the base of the trapezoid is greater than the length of its top side, with the base of the trapezoid located on the side closest to the substrate 102.

[0072] The bottom ends of a plurality of first columnar spacers 1031 are fixedly disposed on the substrate 102. However, those skilled in the art will understand that the plurality of first columnar spacers 1031 are not directly fabricated on the substrate 102, but rather on a patterned layer on the substrate 102. In other words, the bottom ends of the plurality of first columnar spacers 1031 are fixedly disposed on the substrate on which the patterned layer has been fabricated. The patterned layer includes at least one film layer, and the specific structure of the patterned layer is related to the specific structure of the display substrate 10. For example, when the display substrate 10 is an array substrate, the patterned layer may include film layers such as thin-film transistor layers, pixel electrode layers, insulating layers, and common electrode layers; when the display substrate 10 is a color filter substrate, the patterned layer may include film layers such as black matrix layers and filter layers. Since the surface of the patterned layer away from the substrate 102 is not necessarily horizontal, the distance between the bottom ends of the first columnar spacers 1031 and the substrate 102, and the height of the first columnar spacers 1031, may differ to some extent.

[0073] Example, reference Figure 2C and Figure 2E When there are some recessed and raised areas on the surface of the patterned layer 102' away from the substrate 102; Figure 2C In the middle, the tops of the multiple first columnar septa 1031 are flush or nearly flush; in Figure 2E In the middle, the heights of the multiple first columnar septa 1031 are the same or approximately the same.

[0074] When the surface of the patterned layer 102′ away from the substrate 102 does not have any recessed or protruding areas, that is, when the surface of the patterned layer 102′ away from the substrate 102 is horizontal, for example, refer to... Figure 2B , Figure 2D , Figure 2F and Figure 2G The distance between the bottom ends of the plurality of first columnar spacers 1031 and the substrate 102 is equal or approximately equal.

[0075] It should be noted that, since the surface of the pattern layer 102' away from the substrate 102 is horizontal, the distances between the bottom ends of the plurality of first columnar spacers 1031 and the substrate 102 are equal or approximately equal. To simplify the structure of the display substrate 10, therefore... Figure 2B , Figure 2D , Figure 2F and Figure 2G The patterned layer 102' is not shown, but those skilled in the art should understand that the bottom end of the first columnar spacer 1031 in these structures is located on the patterned layer 102', and the side surface of the patterned layer 102' away from the substrate 102 is a horizontal plane.

[0076] The first columnar spacer 1031 is fabricated on the display substrate 10. The bottom end of the first columnar spacer 1031 is fixed to the display substrate 10. The height of the first columnar spacer 1031 and the distance between the bottom and top ends of the first columnar spacer 1031 and the substrate 102 can be designed according to the design requirements of the display substrate 10. The position of the first columnar spacer 1031 will not change due to external force on the display substrate 10. The distribution of the first columnar spacer 1031 is not random, so the distance between the display substrate 10 and the opposing substrate 11 can be controlled more precisely.

[0077] refer to Figure 3A and Figure 3BAs shown, the display panel 1 in the related technology includes a color filter substrate and an array substrate disposed opposite each other. A liquid crystal layer, a sealant 105 for sealing the liquid crystal layer, and plastic balls located in the sealant 105 for supporting the color filter substrate and the array substrate are disposed between the color filter substrate and the array substrate. The display panel 1 also has a display area 100 and an encapsulation area 101 surrounding the display area 100. The plastic balls 103' and the sealant 105 are located in the encapsulation area 101. In the manufacturing process of the display panel 1, the plastic balls 103' and the sealant 105 are first mixed together, then the mixture of plastic balls 103' and the sealant 105 is coated on the encapsulation area 101, and finally the sealant is cured, etc., to achieve cell alignment between the color filter substrate and the array substrate. The plastic balls 103' are used to maintain the cell thickness between the color filter substrate and the array substrate. However, because the plastic balls 103' and the sealant 105 are mixed together, and the uncured sealant 105 has a certain degree of fluidity, the distribution of the plastic balls 103' in the sealant 105 is random and irregular, and the specific position of the plastic balls 103' cannot be precisely controlled by humans. Because the plastic balls 103' are mixed into the sealant 105, it is common to see some areas in the display panel 1 with a higher density of plastic balls 103', where multiple plastic balls 103' are clustered together, while other areas have a lower density. When the density of plastic balls 103' is high, although the supporting force on the array substrate is greater, the clustering of multiple plastic balls 103' may result in overlapping, increasing the distance between the edge of the color filter substrate and the edge of the array substrate. For example, see reference... Figure 3BAs shown, the stacking of multiple plastic balls 103′ results in a distance of d1′ on one side and d2′ on the other side between the color filter substrate and the array substrate, and d1′ and d2′ are not equal. However, both d1′ and d2′ are greater than the preset value d′. This leads to an increase in the support height of the edges of the color filter substrate and the array substrate relative to the preset value d′, ultimately causing light leakage or edge mura (uneven brightness area) at the edges of the display panel 1. In areas with a lower density of plastic balls 103′, although the support height is not affected, the support force between the color filter substrate and the array substrate is insufficient, affecting the overall strength of the display panel 1. Furthermore, when the display panel 1 is subjected to greater force, the position of the plastic balls 103′ may move slightly, further aggravating the light leakage or edge mura, and affecting the display effect of the display panel 1. Therefore, in this related technology, when the color filter substrate and the array substrate are supported by plastic balls 103', the random distribution of the plastic balls 103' in the sealing adhesive 105 results in poor uniformity of the support height between the color filter substrate and the array substrate. Furthermore, the color filter substrate or the array substrate cannot compensate for height differences at different locations. Due to these differences in support height, the upper and lower surfaces of the display panel 1 are not parallel or not approximately parallel, leading to poor quality and display effect of the display panel 1. For example, see reference. Figure 3C Taking the inclusion of substrate 102 in both the color filter substrate and the array substrate as an example, the influence of plastic ball 103′ on the cell thickness between the color filter substrate and the array substrate is explained. Because plastic ball 103′ causes the two substrates 102 to be not parallel or not approximately parallel to each other, the upper surface (the side of the substrate in the color filter substrate away from plastic ball 103′) and the lower surface (the side of the substrate in the array substrate away from plastic ball 103′) of the display panel 1 are not parallel or approximately parallel, which easily leads to light leakage and edge mura phenomenon. In addition, plastic ball 103′ also increases the distance between the two substrates 102. Some plastic balls 103′ do not contact one or both substrates 102 and cannot play a supporting role, thereby reducing the pressure resistance of the display panel 1 when subjected to force.

[0078] In this disclosure, the display substrate 1 includes a spacer layer 103, which includes a plurality of first columnar spacers 1031 located in the encapsulation region 101 and spaced apart around the display region 100. The bottom ends of the plurality of first columnar spacers 1031 are fixedly disposed on the substrate 102. The positions of the plurality of first columnar spacers 1031 are fixed, and the positions of the plurality of first columnar spacers 1031 will not move when the display panel 1 is subjected to force, and are not random. The height of the first columnar spacers can be set to be the same or different, and the distance between the bottom end and / or top end of the first columnar spacers and the substrate 102 can also be set to be the same or different to adapt to different cell requirements and cell thicknesses between the display substrate 10 and the opposing substrate 11, ensuring that the two opposing surfaces (e.g., the upper surface and the lower surface) of the display panel 1 are parallel or approximately parallel, avoiding light leakage or edge mura at the edges of the display substrate 10 and the opposing substrate 11, and all the first columnar spacers 1031 can play a supporting role. Therefore, the display panel 1 in this disclosure has good quality and display effect, and strong pressure resistance.

[0079] In some embodiments, reference Figure 2B and Figure 2C The distances from the top of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 are equal or approximately equal.

[0080] Example, reference Figure 2B The bottom ends of the plurality of first columnar spacers 1031 are at equal or approximately equal distances from the side surface of the substrate 102 away from the plurality of first columnar spacers 1031, and the heights of the plurality of first columnar spacers 1031 are equal or approximately equal. The manufacturing process of the plurality of first columnar spacers 1031 with this structure is relatively simple.

[0081] Example, reference Figure 2C The distances between the bottom ends of the plurality of first columnar spacers 1031 and the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 are not equal, and the heights of the plurality of first columnar spacers 1031 are different. This structure of plurality of first columnar spacers 1031 can be used with a variety of substrates 102 with different structures, and has a wide range of applications.

[0082] In some embodiments, reference Figure 2B The distances from the bottom ends of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 are equal or approximately equal, and the heights of the plurality of first columnar spacers 1031 are equal or approximately equal. The plurality of first columnar spacers 103 in this structure can be fabricated using ordinary photomasks (i.e., not halftone photomasks), resulting in a relatively simple fabrication process and low manufacturing cost.

[0083] In some embodiments, reference Figures 4A-4E The spacer layer 103 further includes a plurality of second columnar spacers 1032 located in the display area 100 and spaced apart, with the bottom ends of the plurality of second columnar spacers 1032 fixedly disposed on the substrate 102. The bottom end of the plurality of second columnar spacers 1032 is closer to the substrate 102, and the top end is farther away from the substrate 102.

[0084] The bottom ends of the plurality of second columnar spacers 1032 are fixedly disposed on the substrate 102. This should be understood as the bottom ends of the plurality of second columnar spacers 1032 being fixedly disposed on the substrate 102 on which the patterned layer 102′ has been formed.

[0085] refer to Figures 4B-4C The distance from the bottom end of the plurality of second columnar spacers 1032 to the side surface of the substrate 102 away from the plurality of second columnar spacers 1032 is equal to or approximately equal to the distance from the bottom end of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031. The side surface of the substrate 102 near the first columnar spacers 1031 and the second columnar spacers 1032 is relatively flat, which facilitates the fabrication of the first columnar spacers 1031 and the second columnar spacers 1032 on the substrate 102, and the control of the height of the first columnar spacers 1031 and the second columnar spacers 1032; wherein the height of the first columnar spacers 1031 and the height of the second columnar spacers 1032 can be the same or different.

[0086] For example, the structure of the second columnar septum 1032 is the same as that of the first columnar septum 1031, that is, both are frustums and both have trapezoidal cross sections.

[0087] In other embodiments, reference is made to... Figure 4B and Figure 4D The heights of the multiple first columnar septa 1031 and the multiple second columnar septa 1032 are equal or approximately equal. The fact that the heights of the multiple second columnar septa 1032 and the multiple first columnar septa 1031 are the same facilitates the simultaneous fabrication of the first columnar septa 1031 and the second columnar septa 1032 using the same ordinary photomask.

[0088] In other embodiments, reference is made to... Figure 4B and Figure 4E The distance from the top of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 is equal to or approximately equal to the distance from the top of the plurality of second columnar spacers 1032 to the side surface of the substrate 102 away from the plurality of second columnar spacers 1032.

[0089] For example, in Figure 4B In the display substrate 10 shown, the distance from the bottom end of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 is equal to or approximately equal to the distance from the bottom end of the plurality of second columnar spacers 1032 to the side surface of the substrate 102 away from the plurality of second columnar spacers 1032, and the height of the plurality of first columnar spacers 1031 is equal to or approximately equal to the height of the plurality of second columnar spacers 1032. Figure 4E In the display substrate 10 shown, the distances from the bottom ends of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 are not completely equal; the distances from the bottom ends of the plurality of second columnar spacers 1032 to the side surface of the substrate 102 away from the plurality of second columnar spacers 1032 are not completely equal; the distances from the bottom ends of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 are not completely equal to the distances from the bottom ends of the plurality of second columnar spacers 1032 to the side surface of the substrate 102 away from the plurality of second columnar spacers 1032; and the heights of the plurality of first columnar spacers 1031 are not completely the same, the heights of the plurality of second columnar spacers 1032 are not completely the same, and the heights of the plurality of first columnar spacers 1031 and the heights of the plurality of second columnar spacers 1032 are not completely the same.

[0090] The tops of the plurality of first columnar spacers 1031 and the tops of the plurality of second columnar spacers 1032 are flush; on the one hand, this makes the alignment accuracy requirement between the display substrate 10 and the opposing substrate 11 lower, which facilitates the alignment of the display substrate 10 and the opposing substrate 11; on the other hand, when manufacturing the opposing substrate 11, the surface of the opposing substrate 11 near the display substrate 10 can be made into a plane, which simplifies the manufacturing process.

[0091] refer to Figure 4D and Figure 4E Because the patterned layer 102′ has some recessed and / or raised areas on the side surface of the substrate 102 away from the substrate 102, the distances from the bottom ends of the plurality of first columnar spacers 1031 to the side surface of the substrate 102 away from the plurality of first columnar spacers 1031 are not completely equal, and the distances from the bottom ends of the plurality of second columnar spacers 1032 to the side surface of the substrate 102 away from the plurality of second columnar spacers 1032 are not completely equal. Figure 4DIn this case, the height of the first columnar spacer 1031 is equal to or approximately equal to the height of the second columnar spacer 1032. Although the tops of the first columnar spacer 1031 and the second columnar spacer 1032 are not flush, this height difference can be compensated by the pattern layer provided on the counter substrate 11. For example, when there is a recessed area in the pattern layer 102' provided on the display substrate 10, the area of the pattern layer on the counter substrate 11 that is projected and overlapped with this recessed area can be set as a raised area to compensate for the height difference between the tops of the first columnar spacer 1031 and the second columnar spacer 1032.

[0092] In some embodiments, referring to Figures 5A-5G , the display substrate 10 further includes: a color filter layer 106, located between the plurality of second columnar spacers 1032 and the substrate 102. The color filter layer 106 includes color filter patterns 106' of multiple different colors.

[0093] The color filter patterns 106' of multiple different colors are, for example, color filter patterns 106' of three primary colors, for example, a red color filter pattern 106', a green color filter pattern 106', and a blue color filter pattern 106'. The color filter patterns 106' of multiple different colors are used to convert the light emitted by the backlight into light of three primary colors. It should be noted that in Figures 5A-5E , only 4 color filter patterns 106' of three colors are schematically shown, and this does not limit the number of color filter patterns 106'.

[0094] A support layer 107, located between the plurality of first columnar spacers 1031 and the substrate 102. The support layer 107 includes support patterns 107' of at least one color. The material of each support pattern 107' of each color is the same as the material of any one of the color filter patterns 106' of multiple different colors.

[0095] For example, referring to Figure 5A and Figure 5B , the support layer 107 includes a support pattern 107'. This support pattern 107' is in the shape of a "square" and has no hollow area. The material of this support pattern 107' is the same as the material of any one of the color filter patterns 106' of multiple different colors. For example, if the material of this support pattern 107' is the same as the material of the blue color filter pattern, then the color of this support pattern 107' is also blue.

[0096] For example, referring to Figure 5C and Figure 5D , the support layer 107 includes a plurality of hollow areas 1070. The hollow areas 1070 are used to accommodate part of the protective layer 109.

[0097] Referring to Figure 5A and Figure 5CA black matrix layer 108 is located on a substrate 102, and is situated between the display area 100 and the encapsulation area 102. The portion of the black matrix layer 108 located in the display area 100 has a mesh-like structure, while the portion located in the encapsulation area 101 has a planar structure. The projections of multiple first columnar spacers 1031 onto the substrate 102 and the projections of multiple second columnar spacers 1032 onto the substrate 102 are both within the projection of the black matrix layer 108 onto the substrate 102. In other words, the fabrication positions of the multiple first columnar spacers 1031 and the multiple second columnar spacers 1032 correspond to the black matrix layer 108, thereby preventing the multiple first columnar spacers 1031 and the multiple second columnar spacers 1032 from blocking the light incident on the filter pattern 106'.

[0098] The portion of the black matrix layer 108 located in the display area 100 is in the form of a grid, and the light filter pattern 106' covers the grid. Light emitted from the backlight enters the light filter pattern 106' through the grid. The portion of the black matrix located in the encapsulation area 101 is in the form of a planar structure to prevent light emitted from the backlight from escaping and causing edge light leakage on the display substrate 1.

[0099] refer to Figure 5B and Figure 5D The protective layer 109 is located between the filter layer 106 and the plurality of second columnar spacers 1032, and the support layer 107 and the plurality of first columnar spacers 1031. That is, the protective layer extends from the display area 100 to the encapsulation area 101.

[0100] The protective layer 109 is used to protect the filter layer 106 and the support layer 107 located thereunder. At the same time, a relatively flat surface can be formed on the side of the protective layer 109 away from the substrate 102. This flat surface facilitates the subsequent fabrication of multiple first columnar spacers 1031 and multiple second columnar spacers 1032. In other words, the protective layer can also play a certain planarization role.

[0101] For example, the protective layer 109 is made of OC (overcoat) material, which is a photosensitive resin material. The protective layer 109 can protect the filter layer 106 and the black matrix layer 108.

[0102] Those skilled in the art will understand that the black matrix layer 108, the filter layer 106, the support layer 107, and the protective layer 109 therein are a specific structure of the pattern layer 102′ described above.

[0103] refer to Figure 5B and Figure 5EBecause the structure of the partial black matrix layer 108 located in the display area 100 is different from that of the partial black matrix layer 108 located in the encapsulation area 101, a groove 1060 is present on the side of the filter pattern 106′ away from the substrate 102. However, the groove 1060 may not necessarily be present on the side of the support layer 107 away from the substrate 102. Furthermore, the planarization capability of the protective layer 109 is limited. Therefore, the support layer 107 needs to be properly configured so that a flat surface can be formed for use in manufacturing the first columnar spacer 1031 and the second columnar spacer through the planarization effect of the protective layer 109.

[0104] In some embodiments, reference Figure 5A and Figure 5B The support layer 107 includes a support pattern 107', and the support pattern 107' has no cutout area 1070. Therefore, the thickness of the support pattern 107' is less than the thickness of the filter pattern 106'. (Reference) Figure 5B During setup, the thickness of the support layer 107, which includes a support pattern 107', is set to be less than the thickness of the filter pattern 106', so that planarization can be achieved through the protective layer 109. Since the support layer 107 includes a support pattern 107', if the thickness of the support layer 107 is set to be equal to the thickness of the filter pattern 106', planarization cannot be achieved through the protective layer 109 in terms of the coating process for making the protective layer 109. That is, a flat surface cannot be formed on the side of the protective layer 109 away from the substrate 102. In this structure, the upper surface of the portion of the protective layer 109 located in the encapsulation region 101 will be higher than the upper surface of the portion located in the display region 100. The upper surface of the protective layer 109 is the surface of the protective layer 109 on the side away from the substrate 102. Therefore, the thickness of the support pattern 107' is less than the thickness of the filter pattern 106'.

[0105] In other embodiments, reference is made to... Figure 5C , Figure 5D and Figure 5E The support layer 107 includes multiple hollow areas 1070 and multiple support patterns 107', wherein the thickness of the multiple support patterns 107' is equal to or approximately equal to the thickness of the filter pattern 106'.

[0106] The multiple support patterns 107' can be the same color, for example, all blue. In this case, the blue support patterns 107' can be prepared simultaneously with the blue filter pattern 106'. The multiple support patterns 107' can also be different colors, for example, some are red, some are blue, and some are green. In this case, the red support pattern 107' and the red filter pattern 106' can be prepared simultaneously; the blue support pattern 107' and the blue filter pattern 106' can be prepared simultaneously; and the green support pattern 107' and the green filter pattern 106' can be prepared simultaneously. That is to say, the color of the support pattern 107' is the same as the color of the filter pattern 106', which is made of the same material.

[0107] refer to Figure 5D and Figure 5E In the setup, the thickness of the support layer 107, which includes multiple support patterns 107', is set to be equal to the thickness of the filter pattern 106', and a cutout area 1070 is provided between the multiple support patterns 107'. The size of the cutout area 1070 is related to the size of the groove 1060. For example, the volume of the cutout area 1070 is equal to or approximately equal to the volume of the groove 1060. As another example, the width w1 of the groove 1060 is, for example, greater than 10 micrometers and less than 100 micrometers, and the width w2 of the cutout area 1070 is, for example, less than or equal to 10 μm ± 2 μm.

[0108] refer to Figure 5E The thickness of the support pattern 107′ is equal to the thickness d2 of the filter pattern 106′. In the display area 100 corresponding to the black matrix layer 108, the sum of the thickness d1 of the black matrix layer 108, the thickness d2 of the filter pattern 106′, and the portion of the protective layer 109 with a thickness of d3 is equal to d. In the encapsulation area 101, the sum of the thickness d1 of the black matrix layer 108, the thickness d2 of the support pattern 107′, and the portion of the protective layer 109 with a thickness of d3 is also equal to d. This ensures that the surface of the protective layer 109 away from the substrate 102 is a flat surface, which can also be called a horizontal surface.

[0109] In other embodiments, reference is made to... Figure 5F and Figure 5G Each columnar spacer 1031 corresponds one-to-one with a support pattern 107'. There is a cutout area 1070 between adjacent support patterns, and the orthographic projection of the first columnar spacer 1031 onto the substrate 102 falls within the range of the orthographic projection of the support pattern 107' onto the substrate 102. When a support pattern 107' is located directly below the first columnar spacer 1031, it further ensures that the distance between the bottom end of the first columnar spacer 1031 and the substrate 102 is equal.

[0110] In other embodiments, the thickness of any one of the multiple support patterns 107' may be greater than the thickness of the filter pattern 106'. In this structure, the support pattern 107' and the filter pattern 106' may also be made using the same ordinary photomask.

[0111] As can be seen from the above, the relationship between the size of the cutout area 1070 and the size of the groove 1060 determines whether the surface of the protective layer 109 away from the substrate 102 is flat. Therefore, in some embodiments, the support layer 107 may also include a support pattern 107', the thickness of which is the same as the thickness of the filter pattern 106', and the support pattern 107' is provided with a plurality of cutout areas 1070.

[0112] Therefore, this disclosure selects different support layer 107 structures and sets the specific structure and thickness of the support layer according to whether there is a hollow area 1070, so as to ensure the flattening effect of the protective layer 109.

[0113] In some embodiments, the multiple support patterns 107' are of the same color, that is, multiple support patterns and filter patterns 106' of the same color are prepared simultaneously. For example, the multiple support patterns 107' are all blue, that is, multiple support patterns 107' and blue filter patterns 106' are prepared simultaneously. When the multiple support patterns 107' are of the same color, it is convenient to prepare all the support patterns 107' at once using a mask, making the preparation of the support layer 107 simpler.

[0114] In some embodiments, the plurality of first columnar spacers 1031 and the plurality of second columnar spacers 1032 are made of the same material. For example, the plurality of first columnar spacers 1031 and the plurality of second columnar spacers 1032 are made of polyacrylic acid resin or polyester resin.

[0115] In some embodiments, the sum of the first distance, the second distance, and the third distance of the plurality of first columnar spacers 1031 is equal or approximately equal.

[0116] A first distance of a first columnar spacer 1031 is the distance between its bottom end and the side surface of the substrate 102 in the display substrate 10 away from the first columnar spacer 1031; a second distance of a first columnar spacer 1031 is the distance between its bottom end and its top end; a third distance of a first columnar spacer 1031 is the distance between its top end and the side surface of the substrate 102 in the opposing substrate 11 away from the first columnar spacer 1031.

[0117] Example, reference Figure 6Both the display substrate 10 and the opposing substrate 11 include a substrate 102 and a pattern layer 102'. A first distance of a first columnar spacer 1031 is the distance between its bottom end and the side surface of the substrate 102 in the display substrate 10 away from the first columnar spacer 1031, which is L1. A second distance of a first columnar spacer 1031 is the distance between its bottom end and its top end, which is the height L2 of the columnar spacer. A third distance of a first columnar spacer 1031 is the distance between its top end and the side surface of the substrate 102 in the opposing substrate 11 away from the first columnar spacer 1031, which is L3. The sum of the first, second, and third distances of the plurality of first columnar spacers 1031 is the sum of L1, L2, and L3.

[0118] When the sum of the first distance L1, the second distance L2, and the third distance L3 of the plurality of first columnar septa 1031 is equal or approximately equal, the first distance L1, the second distance L2, and the third distance L3 of all the first columnar septa 1031 can be completely equal or partially equal.

[0119] The sum of the first distance L1, the second distance L2, and the third distance L3 of the plurality of first columnar spacers 1031 is equal or approximately equal, which can ensure that the side surface of the substrate 102 in the display substrate 10 away from the first columnar spacers 1031 is parallel or approximately parallel to the side surface of the substrate 102 in the opposing substrate 11 away from the first columnar spacers 1031, thus avoiding light leakage or edge mura in the display panel 1. At the same time, the tops of the plurality of first columnar spacers 1031 can contact the opposing substrate 11, thereby increasing the supporting force of the first columnar spacers 1031 on the opposing substrate 11 and improving the pressure resistance of the display panel 1 under stress.

[0120] In other embodiments, reference is made to... Figure 6 The sum of the first distance L1, the second distance L2, and the third distance L3 of the plurality of first columnar spacers 1031 is equal to or approximately equal to the sum of the first distance L1′, the second distance L2′, and the third distance L3′ of the plurality of second columnar spacers 1032. The first distance L1′ of a second columnar spacer 1032 is the distance between its bottom end and the side surface of the substrate 102 in the display substrate 10 away from the second columnar spacer 1032; the second distance L2′ of a second columnar spacer 1032 is the distance between its bottom end and its top end; the third distance L3′ of a second columnar spacer 1032 is the distance between its top end and the side surface of the substrate 102 in the opposing substrate 11 away from the second columnar spacer 1032.

[0121] The sum of the first distance L1, the second distance L2, and the third distance L3 of the plurality of first columnar spacers 1031 is equal to or approximately equal to the sum of the first distance L1′, the second distance L2′, and the third distance L3′ of the plurality of second columnar spacers 1032. This ensures that the upper and lower surfaces of the display panel 1 are parallel or approximately parallel to each other, avoiding light leakage or edge mura. Secondly, since the tops of the first columnar spacers 1031 and the second columnar spacers 1032 are in contact with the opposing substrate 11, the pressure resistance of the display panel 1 under stress can also be improved. Finally, the specific heights of the first columnar spacers 1031 and the second columnar spacers 1032 can be set according to the specific structure at different positions of the pattern layer 102′, improving the applicability of the first columnar spacers 1031 and the second columnar spacers 1032.

[0122] In some embodiments, the auxiliary pixel area 104 is provided with a multi-color filter pattern 106' and a grid-like black matrix layer 108; in other embodiments, the auxiliary pixel area 104 is provided with a support layer 107 and a planar black matrix layer 108. Since the auxiliary pixel area 104 is a transition area between the display area 100 and the encapsulation area 101, and the auxiliary pixel area 104 is not used for display, the auxiliary pixel area 104 can be provided with a filter pattern 106' and a grid-like partial black matrix layer 108, or it can be provided with a support layer 107 and a planar partial black matrix layer 108; that is, for the auxiliary pixel area 104, the structure of the filter layer 106, the support layer 107 and the black matrix layer 108 can be the same as in the display area, or it can be the same as in the encapsulation area 101, neither of which will affect the normal operation of the display substrate 10.

[0123] In some embodiments, the opposing substrate 11 includes a metal layer, and the top ends of the first columnar spacer 1031 and the second columnar spacer 1032 are in contact with the metal layer, or the projection of the first columnar spacer 1031 onto the substrate 102 is within the projection of the metal layer onto the substrate 102. For example, the metal layer is used to form a data line.

[0124] In some embodiments, the display substrate 10 is a color filter substrate, and the opposing substrate 11 is an array substrate.

[0125] In other embodiments, the display substrate 10 is an array substrate, and the opposing substrate 11 is a color filter substrate.

[0126] refer to Figures 2A-2G This disclosure also provides a method for preparing a display substrate 10, comprising:

[0127] A first thin film is formed on a substrate 102, and the first thin film is patterned to form a plurality of first columnar spacers 1031 spaced apart; wherein the plurality of first columnar spacers 1031 are located in the encapsulation region 101.

[0128] Patterning can be achieved, for example, through patterning processes, which include processes such as coating, exposure, development, and etching.

[0129] The method for preparing the display substrate 10 disclosed herein has the same beneficial effects as the display substrate 10 described above, and therefore will not be repeated here.

[0130] In some embodiments, reference Figures 4A-4E When the first thin film is patterned to form a plurality of first columnar spacers 1031, a plurality of second columnar spacers 1032 are simultaneously formed at intervals, and the plurality of second columnar spacers 1032 are located in the display area 100.

[0131] When preparing the second columnar septum 1031 and the second columnar septum 1032 simultaneously, they can be prepared using the same ordinary mask or the same halftone mask, making the preparation process relatively simple.

[0132] It should be noted that halftone masks are based on the same thin film and can be used to fabricate masks with patterns of different thicknesses; ordinary masks are based on the same thin film and can be used to fabricate masks with patterns of the same thickness.

[0133] refer to Figure 4B and Figure 4C The distance from the bottom end of the plurality of second columnar spacers 1032 to the substrate 102 is equal to or approximately equal to the distance from the bottom end of the plurality of first columnar spacers 1031 to the substrate 102. The surface of the first substrate 102 near the plurality of first columnar spacers 1031 and the plurality of second columnar spacers 1032 is flat, which facilitates the fabrication of the plurality of first columnar spacers 1031 and the plurality of second columnar spacers 1032 thereon.

[0134] In other embodiments, reference is made to... Figure 4B and Figure 4D The heights of the multiple first columnar septa 1031 and multiple second columnar septa 1032 are equal or approximately equal, which makes it easy to simultaneously fabricate multiple first columnar septa 1031 and multiple second columnar septa 1032 using the same ordinary photomask. The fabrication process is simple and the manufacturing cost is low.

[0135] In some embodiments, reference Figure 4B and Figure 4E, the distance from the top of multiple first columnar spacers 1031 to the surface of the substrate 102 on the side away from the multiple first columnar spacers 1031 is equal to or approximately equal to the distance from the top of the multiple second columnar spacers 1032 to the surface of the substrate 102 on the side away from the multiple second columnar spacers 1032, which facilitates the cell alignment with the counter substrate 11.

[0136] Reference Figure 4E , when the heights of the multiple first columnar spacers 1031 are different and the heights of the multiple second columnar spacers 1032 are different, during fabrication, a halftone mask plate needs to be used for preparation, and the preparation process is relatively simple.

[0137] In some embodiments, before forming the first thin film, the method for preparing the display substrate 10 further includes:

[0138] Reference Figure 7A , form a second thin film on one side of the substrate 102, and after patterning the second thin film, form a black matrix layer 108.

[0139] Part of the black matrix layer 108 located in the display area 100 is in a grid shape, and part of the black matrix located in the encapsulation area 101 has a planar structure.

[0140] Reference Figure 7B , form a second thin film on the substrate 102 on which the black matrix layer 108 is formed, and after patterning the second thin film, form a color filter layer 106 and a support layer 107. The color filter layer 106 includes color filter patterns 106′ of multiple colors; the support layer 107 includes support patterns 107′ of at least one color, and the material of each support pattern 107′ is the same as the material of any one of the multiple different color filter patterns 106′.

[0141] Exemplarily, reference Figure 7B and Figure 7C , the support layer 107 includes a support pattern 107′, the support pattern 107′ is in a "square" shape, and the thickness of the support pattern 107′ is less than the thickness of the color filter pattern 106′. The support pattern 107′ and the color filter pattern 106′ of this structure can be fabricated by using the same halftone mask plate.

[0142] Also exemplarily, reference Figures 7D to 7G , the support layer 107 includes multiple support patterns 107′ and multiple hollow areas 1070. In the support layer 107, as long as the thickness of the hollow area 1070 and the support layer 107 can meet the requirements for the planarization of the protective layer 109, that is, the thickness of the support layer 107 can be less than, equal to, or greater than the thickness of the color filter pattern 106′. Regarding the number and shape of the multiple support patterns 107′, the present disclosure does not make any limitations.

[0143] Example, reference Figure 7G Multiple support patterns 107′ are distributed in an array. The top view of each support pattern 107′ is, for example, rectangular. There is a cutout area 1070 between two adjacent support patterns 107′. The width of the cutout area 1070 is, for example, 10μm.

[0144] The colors of the multiple support patterns 107' mentioned above can be the same or different. It should be noted that when the colors of the multiple support patterns 107' are the same, the support layer 107 can also be regarded as including only one support pattern 107' and multiple cutout areas 1070, and the thickness of the one support pattern 107' is equal to the thickness of the filter pattern 107'.

[0145] It should be noted that, in Figures 7D to 7F In the filter pattern 106′, there is only one support pattern 107′ on each side along the width direction and only two support patterns 107′ on each side along the length direction of the filter pattern 106′. The number of support patterns 107′ on each side is only for illustration.

[0146] In some embodiments, reference Figure 5D and Figure 5E The thickness of the multiple support patterns 107′ is equal to or approximately equal to the thickness of the filter pattern 106′, so multiple support patterns 107′ and filter patterns 106′ can be fabricated simultaneously using the same ordinary photomask.

[0147] In some embodiments, reference Figure 7D and Figure 7E The multiple support patterns 107' are the same color, that is, the multiple support patterns 107' are made of the same color material as the filter pattern 106', for example, they are all blue, so it is convenient to prepare multiple support patterns 107' at one time.

[0148] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display substrate, characterized in that, The display substrate includes a display area and an encapsulation area surrounding the display area; the display substrate includes: Substrate; A spacer layer is located on one side of the substrate. The spacer layer includes a plurality of first columnar spacers located in the encapsulation area and spaced apart around the display area. The bottom ends of the plurality of first columnar spacers are fixedly disposed on the substrate. The bottom end of the plurality of first columnar spacers is closer to the substrate, and the top end is farther from the substrate. The spacer layer also includes a plurality of second columnar spacers located in the display area and spaced apart. The bottom ends of the plurality of second columnar spacers are fixedly disposed on the substrate. A filter layer is located between the plurality of second columnar spacers and the substrate, the filter layer comprising filter patterns of various colors; and grooves are present on the surface of the filter pattern away from the substrate. A support layer, located between the plurality of first columnar spacers and the substrate, comprises a support pattern of at least one color, wherein the material of each support pattern is the same as the material of any one of a plurality of different colored filter patterns; the support layer comprises a plurality of hollow areas and a plurality of support patterns, wherein the thickness of the plurality of support patterns is equal to the thickness of the filter patterns; the volume of the hollow areas is equal to the volume of the grooves; and the plurality of support patterns are of the same color. A protective layer is located between the filter layer and the plurality of second columnar spacers, and between the support layer and the plurality of first columnar spacers.

2. The display substrate according to claim 1, characterized in that, The distances from the top of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers are equal or approximately equal.

3. The display substrate according to claim 1, characterized in that, The distances from the bottom ends of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers are equal or approximately equal, and the heights of the plurality of first columnar spacers are equal or approximately equal.

4. The display substrate according to claim 1, characterized in that, The bottom end of the plurality of second columnar spacers is the end closest to the substrate, and the top end is the end furthest from the substrate; The distance from the bottom end of the plurality of second columnar spacers to the side surface of the substrate away from the plurality of second columnar spacers is equal to or approximately equal to the distance from the bottom end of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers, and / or the heights of the plurality of first columnar spacers and the plurality of second columnar spacers are equal or approximately equal.

5. The display substrate according to claim 1, characterized in that, The bottom end of the plurality of second columnar spacers is the end closest to the substrate, and the top end is the end furthest from the substrate; The distance from the top of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers is equal to or approximately equal to the distance from the top of the plurality of second columnar spacers to the side surface of the substrate away from the plurality of second columnar spacers.

6. The display substrate according to claim 1, characterized in that, Also includes: A black matrix layer is located on the substrate; the projections of the plurality of first columnar spacers on the substrate and the projections of the plurality of second columnar spacers on the substrate are both within the projection of the black matrix layer on the substrate.

7. The display substrate according to claim 1, characterized in that, The plurality of first columnar septa and the plurality of second columnar septa are made of the same material.

8. A display device, characterized in that, The display substrate includes any one of claims 1 to 7.

9. A method for preparing a display substrate, characterized in that, The display substrate has a display area and an encapsulation area surrounding the display area; The method for preparing the display substrate includes: A second thin film is formed on one side of a substrate with a black matrix. The second thin film is then patterned to form a filter layer and a support layer. The filter layer includes filter patterns of multiple colors. The support layer includes a support pattern of at least one color, and the material of each support pattern is the same as the material of any one of the multiple filter patterns of different colors. The surface of the filter pattern away from the substrate has grooves. The support layer includes multiple support patterns of the same color. When the second thin film is patterned to form a filter layer and a support layer, the formed support layer further includes multiple hollow areas; the formed support layer further includes multiple support patterns, the thickness of the multiple support patterns being equal to the thickness of the filter pattern; the volume of the hollow area is equal to the volume of the groove; A protective layer is formed; the protective layer covers the filter layer, the support layer, and the hollow area; A first thin film is formed on a substrate, and the first thin film is patterned to form a plurality of first columnar spacers spaced apart; wherein the plurality of first columnar spacers are located in the encapsulation area; When the first thin film is patterned to form the plurality of first columnar spacers, a plurality of second columnar spacers are simultaneously formed at intervals, and the plurality of second columnar spacers are located in the display area.

10. The method for preparing a display substrate according to claim 9, characterized in that, The distance from the bottom of the plurality of second columnar spacers to the side of the substrate away from the plurality of second columnar spacers is equal to or approximately equal to the distance from the bottom of the plurality of first columnar spacers to the side of the substrate away from the plurality of first columnar spacers, and / or, the heights of the plurality of first columnar spacers and the plurality of second columnar spacers are equal or approximately equal; wherein, the end of the plurality of first columnar spacers closest to the substrate is its bottom end, and the end of the plurality of second columnar spacers closest to the substrate is its bottom end.

11. The method for preparing a display substrate according to claim 10, characterized in that, The distance from the top of the plurality of first columnar spacers to the side surface of the substrate away from the plurality of first columnar spacers is equal to or approximately equal to the distance from the top of the plurality of second columnar spacers to the side surface of the substrate away from the plurality of second columnar spacers; wherein, the end of the plurality of first columnar spacers away from the substrate is its top, and the end of the plurality of second columnar spacers away from the substrate is its top.

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