Display panel and mask plate

Abstract

The utility model discloses a display panel and a mask plate, the display panel comprises a first substrate and a second substrate which are oppositely arranged, and a spacer and a sub-pixel which are located between the first substrate and the second substrate, and the spacer is provided with a main body part and a convex part; the plane where the outer contour of the contact face of the protruding part and the main body part is located is a first reference plane. A plane which passes through the center of the convex part and is vertical to the first reference plane is a second reference plane; the tangent line of the outer contour of the contact surface of the convex part and the main body part is a first tangent line which is positioned on a second reference plane; the intersection line of the first reference plane and the second reference plane is a first intersection line; the first tangent and the first intersecting line form a first acute angle; the tangent line of the outer contour of the contact surface of the main body part and the second substrate is a second tangent line which is located on a second reference plane; the second reference plane intersects with the plane where the second substrate is located to form a second intersection line; the second tangent line and the second intersecting line form a second acute angle; the first acute angle is smaller than the second acute angle.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of displays, and in particular, relates to a display panel and a mask plate. Background Art

[0002] With the increasing development of liquid crystal display (LCD) panels, not only the requirements for production quantity and production efficiency are becoming higher, but also the requirements for production yield are becoming higher.

[0003] In liquid crystal display panels, spacers are usually used to ensure uniform thickness of the liquid crystal layer (cell thickness). Spacers can be divided into ball spacers (Ball Space, BS) and post spacers (Post Spacer, PS) according to their shapes. Post spacers have obvious advantages over ball spacers in ensuring uniform cell thickness and are more widely used. There are two main types of post spacers in the display area, namely main spacers (Main PS) and auxiliary spacers (Sub PS). Auxiliary spacers play a vital supporting role in liquid crystal display panels.

[0004] Liquid crystal display panels are prone to plastic deformation during manufacturing, storage, transportation and use, resulting in black gap defects, which directly affects product quality. It is generally believed that the spacers in liquid crystal display panels have a certain impact on black gap defects. How to improve black gap defects by setting spacers is a key issue in improving product quality.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] The present disclosure aims to at least to some extent solve the technical problem that a liquid crystal display module is prone to black gap defects. To this end, the present disclosure provides a display panel and a mask plate.

[0007] A display panel provided by an embodiment of the present disclosure includes a first substrate and a second substrate arranged opposite to each other, and a spacer and a sub-pixel located between the first substrate and the second substrate, wherein the spacer has a main body and a convex portion, and the first substrate, the convex portion, the main body, and the second substrate are sequentially overlapped in the thickness direction of the display panel; the orthographic projection of the main body on the second substrate is a first figure, and the orthographic projection of the convex portion on the second substrate is a second figure, the second figure is within the first figure and is smaller than the first figure; the plane where the outer contour of the contact surface between the convex portion and the main body is located is a first reference plane; passing through the exact center of the convex portion, And the plane perpendicular to the first reference plane is the second reference plane; the tangent line at the outer contour of the contact surface between the protrusion and the main body is the first tangent line, and the first tangent line is located on the second reference plane; the intersection line of the first reference plane and the second reference plane is the first intersection line; the first tangent line and the first intersection line form a first acute angle; the tangent line at the outer contour of the contact surface between the main body and the second substrate is the second tangent line, and the second tangent line is located on the second reference plane; the second reference plane intersects with the plane where the second substrate is located to form a second intersection line; the second tangent line and the second intersection line form a second acute angle; the first acute angle is smaller than the second acute angle.

[0008] In some embodiments, the first acute angle is 0° to 20°.

[0009] In some embodiments, the first figure is a rectangle, a rounded rectangle, or an ellipse; the second figure is a rectangle, a rounded rectangle, or an ellipse; the length direction of the second figure is parallel to the length direction of the first figure.

[0010] In some embodiments, the first graphic has a first long side length in the first direction, and the first graphic has a first wide side length in the second direction; the second graphic has a second long side length in the first direction, and the second graphic has a second wide side length in the second direction; the second direction is perpendicular to the first direction; at least one of the first long side length and the first wide side length is greater than or equal to 30 μm.

[0011] In some embodiments, the sub-pixel array is arranged on the second substrate, a black matrix is ​​provided in the gaps between adjacent sub-pixels, the spacer is provided on the black matrix and the first graphic is located within the orthographic projection of the black matrix on the second substrate.

[0012] In some embodiments, the length of the first long side is greater than or equal to 30 μm, and the length of the first wide side is less than 30 μm.

[0013] In some embodiments, the length of the second long side is 30% to 70% of the length of the first long side, and the length of the second wide side is less than or equal to 5.0 μm.

[0014] In some embodiments, the ratio of the area of ​​the second figure to the area of ​​the first figure is

[0015]

[0016] In some embodiments, the ratio of the area of ​​the second figure to the area of ​​the first figure is

[0017]

[0018] The disclosed embodiment also proposes a mask plate, which is used to prepare the above-mentioned display panel; the mask plate includes a mask substrate and a light-transmitting pattern arranged on the mask substrate, the light-transmitting pattern includes an edge light-transmitting area and a central compensation area located in the edge light-transmitting area; the shape of the light-transmitting pattern is a rectangle, a rounded rectangle, or an ellipse; the shape of the central compensation area is a rectangle, a rounded rectangle, or an ellipse; the length directions of the light-transmitting pattern and the central compensation area are parallel; the transmittance of the central compensation area is greater than the transmittance of the edge light-transmitting area.

[0019] In some embodiments, the sub-pixel array is arranged on the second substrate, a black matrix is ​​provided in the gaps between adjacent sub-pixels, and the orthographic projection of the light-transmitting pattern on the second substrate is located within the orthographic projection of the black matrix on the second substrate.

[0020] In some embodiments, the light-transmitting pattern is in the shape of a chamfered rectangle, and the chamfer distance of the chamfered rectangle is 2.0 μm to 4.0 μm.

[0021] In some embodiments, the light transmittance of the edge light-transmitting area is 20% to 30%, and the light transmittance of the middle compensation area is 30% to 100%.

[0022] The embodiments of the present disclosure have at least the following beneficial effects:

[0023] In the above display panel, the spacer includes a main body and a raised portion, wherein the orthographic projection of the main body on the second substrate is a first figure, and the orthographic projection of the raised portion on the second substrate is a second figure, and the second figure is within the first figure and smaller than the first figure. In other words, the raised portion is located on the main body, and the main body is the main supporting part of the spacer, which to a certain extent avoids defects such as depressions on the top of the main body, which leads to a reduction in the contact area with the first substrate. At the same time, the plane where the outer contour of the contact surface between the protrusion and the main body is located is the first reference plane; the plane passing through the exact center of the protrusion and perpendicular to the first reference plane is the second reference plane; the tangent at the outer contour of the contact surface between the protrusion and the main body is the first tangent, and the first tangent is located on the second reference plane; the intersection line of the first reference plane and the second reference plane is the first intersection line; the first tangent and the first intersection line form a first acute angle; the tangent at the outer contour of the contact surface between the main body and the second substrate is the second tangent, and the second tangent is located on the second reference plane; the second reference plane intersects with the plane where the second substrate is located to form a second intersection line; the second tangent and the second intersection line form a second acute angle; the first acute angle is smaller than the second acute angle. By making the first acute angle smaller than the second acute angle, it can be ensured that the height of the protrusion relative to the main body is not too high. When the first substrate and the second substrate are pressed, the force generated causes the protrusion to deform, so that the first substrate can contact the main body. The contact area formed by the first substrate and the main body is larger than the contact area formed with the protrusion, thereby ensuring that the spacer has a larger contact area with the first substrate; on the one hand, it can avoid the protrusion on the main body being too high, thereby avoiding the spacer contacting the first substrate through the protrusion when the force is applied; on the other hand, it can avoid the main body having a depression, thereby avoiding the defect of reduced contact area caused by the spacer contacting the first substrate through the main body with the depression when the force is applied. That is, the spacer can increase the support area and elastic recovery ability of the spacer to a certain extent, thereby improving the support effect on the first substrate and the second substrate, thereby reducing the generation of black gap defects to a certain extent; at the same time, by making the protrusion in the spacer protrude relative to the main body, the support area and elastic recovery ability of the spacer can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1A schematic diagram showing the shape of a light-transmitting pattern in a mask plate in the related art is shown;

[0026] Figure 2 Shows Figure 1 Schematic diagram of the top surface shape of the columnar spacer prepared by the middle mask plate;

[0027] Figure 3 A schematic diagram showing the light intensity distribution of light-transmitting patterns with different light-transmitting opening sizes;

[0028] Figure 4 A schematic diagram showing the morphology of a columnar spacer prepared when the light-transmitting opening size exceeds 30 μm;

[0029] Figure 5 An orthographic projection diagram of a main body portion and a protruding portion of a spacer in a display panel in an embodiment of the present disclosure on a second substrate is shown;

[0030] Figure 6 shows a cross-sectional view of a display panel in an embodiment of the present disclosure;

[0031] Figure 7 Shows Figure 6 The middle shows an enlarged view of the spacer of the panel;

[0032] Figure 8 An orthographic projection diagram of a main body portion and a protruding portion of a spacer in a display panel on a second substrate is shown in another embodiment of the present disclosure;

[0033] Fig. 9 Shows Figure 5 The middle part shows the schematic diagram of the morphology of the spacer in the panel;

[0034] Fig.10 Shows Figure 5 A scanning electron microscope image of the spacers in the display panel;

[0035] Fig.11 A schematic structural diagram of a mask plate in an embodiment of the present disclosure is shown;

[0036] Fig.12 Shows Fig.11 Schematic diagram of the structure of the light-transmitting pattern in the mask plate.

[0037] Reference numerals:

[0038] 100, spacer; 110, main body; 111, first figure; 120, raised part; 121, second figure; 200, first substrate; 300, second substrate; 400, main spacer; T1, first tangent line; D1, first intersection line; α1, first acute angle; T2, second tangent line; D2, second intersection line; α1, second acute angle; L1, first long side length; W1, first wide side length; L2, second long side length; W2, second wide side length degrees; F1, first direction; F2, second direction; F3, third direction; 1000, mask plate; 1100, mask substrate; 1200, light-transmitting pattern; 1210, edge light-transmitting area; 1220, middle compensation area; L10, first light-transmitting long side length; W10, first light-transmitting wide side length; C10, light-transmitting long side chamfer distance; C20, light-transmitting wide side chamfer distance; L20, second light-transmitting long side length; W20, second light-transmitting wide side length. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0040] In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0041] The present disclosure is described below with reference to specific embodiments and in conjunction with the accompanying drawings:

[0042] In a liquid crystal display panel, spacers are usually used to ensure a uniform thickness of the liquid crystal layer (cell thickness). Spacers are mainly divided into main spacers and auxiliary spacers, among which the auxiliary spacers play a vital supporting role in the liquid crystal display panel.

[0043] In order to prevent the black gap defect caused by plastic deformation of the LCD panel during the manufacturing process, storage, transportation and use, the support area of ​​the spacer can be optimized to improve its support effect, thereby avoiding the black gap defect to a certain extent.

[0044] In view of the above problems, the present disclosure proposes a display panel, such as Figures 5 to 10As shown, the display panel includes a first substrate 200 and a second substrate 300 arranged opposite to each other, and a spacer 100 and a sub-pixel located between the first substrate 200 and the second substrate 300, the spacer 100 has a main body 110 and a protruding portion 120, the first substrate 200, the protruding portion 120, the main body 110, and the second substrate 300 are sequentially overlapped in the thickness direction of the display panel; the orthographic projection of the main body 110 on the second substrate 300 is a first figure 111, the orthographic projection of the protruding portion 120 on the second substrate 300 is a second figure 121, the second figure 121 is within the first figure 111 and the second figure 121 is smaller than the first figure 111; the plane where the outer contour of the contact surface of the protruding portion 120 and the main body 110 is located is the first reference plane; the plane passing through the exact center of the raised portion 120 and perpendicular to the first reference plane is the second reference plane; the tangent at the outer contour of the contact surface between the raised portion 120 and the main body 110 is the first tangent T1, and the first tangent T1 is located on the second reference plane; the intersection line of the first reference plane and the second reference plane is the first intersection line D1; the first tangent T1 and the first intersection line D1 form a first acute angle α1; the tangent at the outer contour of the contact surface between the main body 110 and the second substrate 300 is the second tangent T2, and the second tangent T2 is located on the second reference plane; the second reference plane intersects with the plane where the second substrate 300 is located to form a second intersection line D2; the second tangent T2 and the second intersection line D2 form a second acute angle α2; the first acute angle α1 is smaller than the second acute angle α2.

[0045] In the display panel provided in the embodiment of the present disclosure, Figures 5 to 10 As shown, the spacer 100 includes a main body 110 and a protruding portion 120, wherein the orthographic projection of the main body 110 on the second substrate 300 is a first figure 111, and the orthographic projection of the protruding portion 120 on the second substrate 300 is a second figure 121, and the second figure 121 is within the first figure 111 and is smaller than the first figure 111. In other words, the protruding portion 120 is located on the main body 110, and the main body 110 is the main supporting part of the spacer 100, which to a certain extent avoids defects such as depressions on the top of the main body 110 that reduce the contact area with the first substrate 200.

[0046] In the display panel provided in the embodiment of the present disclosure, the plane where the outer contour of the contact surface between the protrusion 120 and the main body 110 is located is the first reference plane; Figure 6 and Figure 7 As shown in FIG. 1 , the first reference plane is a plane perpendicular to the paper and passing through the first intersection line D1. A plane passing through the center of the protrusion 120 and perpendicular to the first reference plane is the second reference plane; that is, the second reference plane can be any plane with the central axis of the protrusion 120 as the rotation axis. Figure 6 and Figure 7In the embodiment shown, the plane where the paper is located is the second reference plane. The tangent line at the outer contour of the contact surface between the protrusion 120 and the main body 110 is the first tangent line T1, and the first tangent line T1 is located on the second reference plane; the intersection line between the first reference plane and the second reference plane is the first intersection line D1; the first tangent line T1 and the first intersection line D1 form a first acute angle α1; the tangent line at the outer contour of the contact surface between the main body 110 and the second substrate 300 is the second tangent line T2, and the second tangent line T2 is located on the second reference plane; the second reference plane intersects with the plane where the second substrate 300 is located to form a second intersection line D2; the second tangent line T2 and the second intersection line D2 form a second acute angle α2; the first acute angle α1 is smaller than the second acute angle α2. Figure 6 and Figure 7 As shown, by making the first acute angle α1 smaller than the second acute angle α2, it is possible to ensure that the height of the protrusion 120 relative to the main body 110 is not too high. When the first substrate 200 and the second substrate 300 are under pressure, the force generated causes the protrusion 120 to deform, so that the first substrate 200 can contact the main body 110, and the contact area formed by the first substrate 200 and the main body 110 is larger than the contact area formed with the protrusion 120, thereby ensuring that the spacer 100 and the first substrate 200 have a larger contact area; on the one hand, it can avoid the protrusion 120 on the main body 110 being too high, thereby avoiding the spacer 100 from contacting the first substrate 200 through the protrusion 120 when a force is applied; on the other hand, it can avoid having a depression on the main body 110, thereby avoiding the defect of reduced contact area caused by the spacer 100 contacting the first substrate 200 through the main body 110 with the depression when a force is applied.

[0047] In the display panel proposed in the embodiment of the present disclosure, the above-mentioned spacer 100 can be an auxiliary spacer, and a main spacer 400 is also provided between the first substrate 200 and the second substrate 300 of the display panel. The height of the main spacer 400 is greater than that of the spacer 100. When the first substrate 200 and the second substrate 300 are not subjected to external force, the main spacer 400 is supported between the first substrate 200 and the second substrate 300, and there can be a certain gap between the first substrate 200 and the raised portion 120 of the spacer 100.

[0048] The display panel proposed in the embodiment of the present disclosure, wherein the spacer 100 can increase the support area and elastic recovery ability of the spacer 100 to a certain extent, thereby being able to improve the supporting effect on the first substrate 200 and the second substrate 300, thereby being able to reduce the occurrence of black Gap defects to a certain extent; at the same time, by making the raised portion 120 in the spacer 100 protrude relative to the main body 110, the support area and elastic recovery ability of the spacer 100 can be ensured.

[0049] Based on the same inventive concept, the embodiment of the present disclosure also proposes a mask plate 1000, such as Fig.11 and Fig.12 As shown, the mask plate 1000 is used to prepare the above-mentioned display panel; the mask plate 1000 includes a mask substrate 1100 and a light-transmitting pattern 1200 arranged on the mask substrate 1100, the light-transmitting pattern 1200 includes an edge light-transmitting area 1210 and a central compensation area 1220 located in the edge light-transmitting area 1210; the shape of the light-transmitting pattern 1200 is a rectangle, or a rounded rectangle, or an ellipse; the shape of the central compensation area 1220 is a rectangle, or a rounded rectangle, or an ellipse; the length directions of the light-transmitting pattern 1200 and the central compensation area 1220 are parallel; the transmittance of the central compensation area 1220 is greater than the transmittance of the edge light-transmitting area 1210.

[0050] The mask plate 1000 proposed in the embodiment of the present disclosure is as follows: Fig.11 and Fig.12 As shown, by making the transmittance of the middle compensation area 1220 greater than the transmittance of the edge transparent area 1210, the exposure of the middle compensation area 1220 can be increased. While the main body 110 is formed by jointly exposing the edge transparent area 1210 and the middle compensation area 1220, the raised portion 120 can be formed by the larger exposure of the middle compensation area 1220, so that the raised portion 120 is located on the main body 110 and protrudes relative to the main body 110. When the first substrate 200 and the second substrate 300 are subjected to pressure, the force generated causes the raised portion 120 to deform, so that the first substrate 200 can contact the main body 110. The contact area formed by the first substrate 200 and the main body 110 is larger than the contact area formed with the raised portion 120, thereby ensuring that the spacer 100 and the first substrate 200 have a larger contact area; the presence of a depression on the main body 110 can be avoided, thereby avoiding the defect of a reduced contact area caused by the spacer 100 contacting the first substrate 200 through the main body 110 with the depression when the spacer 100 is subjected to force.

[0051] The mask plate 1000 proposed in the embodiment of the present disclosure is as follows: Fig.11 and Fig.12 As shown, the main body 110 of the spacer 100 is formed by exposing the light-transmitting pattern 1200, so the shape of the light-transmitting pattern 1200 can be adjusted to control the shape of the orthographic projection of the main body 110 of the spacer 100 on the second substrate 300, that is, to control the shape of the first pattern 111. The shape of the light-transmitting pattern 1200 is a rectangle, a rounded rectangle, or an ellipse; accordingly, the shape of the orthographic projection of the main body 110 of the spacer 100 formed by the mask plate 1000 on the second substrate 300 is a rectangle, a rounded rectangle, or an ellipse.

[0052] The mask plate 1000 proposed in the embodiment of the present disclosure is as follows: Fig.11and Fig.12 As shown, the protrusion 120 of the spacer 100 is formed by exposure of the central compensation area, so the shape of the central compensation area can be adjusted to control the orthographic projection shape of the protrusion 120 of the spacer 100 on the second substrate 300, that is, to control the shape of the second pattern 121. At the same time, the length directions of the light-transmitting pattern 1200 and the middle compensation area 1220 are made parallel, so that the orthographic projection shape of the main body 110 of the spacer 100 on the second substrate 300 can correspond to the orthographic projection shape of the protrusion 120 of the spacer 100 on the second substrate 300. The shape of the central compensation area is a rectangle, a rounded rectangle, or an ellipse; accordingly, the orthographic projection shape of the protrusion 120 of the spacer 100 formed by the mask plate 1000 on the second substrate 300 is a rectangle, a rounded rectangle, or an ellipse.

[0053] It should be noted that the geometric names such as rectangle, rounded rectangle and ellipse appearing in the mask plate 1000 proposed in the embodiment of the present disclosure are not geometric figures in the strict sense of geometry, but may have certain changes according to the light-transmitting pattern 1200, the processing accuracy of the central compensation area, exposure diffraction, etc., and these changes do not affect the protection scope of the present disclosure.

[0054] As an optional implementation, Figure 6 , Figure 7 as well as Fig.10 As shown, in the display panel provided in some embodiments of the present disclosure, the first acute angle α1 is 0° to 20°.

[0055] The display panel provided in some embodiments of the present disclosure is as follows: Figure 6 , Figure 7 as well as Fig.10 As shown, by making the first acute angle α1 0° to 20°, it is possible to avoid the protrusion 120 from being too protruding relative to the main body 110 and the height of the protrusion 120 relative to the main body 110 being too high, and it is possible to avoid the protrusion 120 from being too protruding and affecting the support area and elastic recovery ability of the protrusion 120. In other words, it is possible to avoid the protrusion 120 from having a small support area with the first substrate 200, or the protrusion 120 cannot deform to make the first substrate 200 contact with the main body 110 when under pressure, and cannot make the first substrate 200 contact with the main body 110 to ensure a larger contact area. Optionally, the first acute angle α1 can be 1.0°, 3.5°, 5.0°, 8.7°, 13.6°, 16.8°, etc. At the same time, since the second reference plane can be any plane with the central axis of the protrusion 120 as the rotation axis, when different planes are used as the second reference plane, the size of the first acute angle α1 can be different.

[0056] As an optional implementation, Figure 5 and Figure 8 As shown, in the display panel proposed in some embodiments of the present disclosure, the first graphic 111 is a rectangle, or a rounded rectangle, or an ellipse; the second graphic 121 is a rectangle, or a rounded rectangle, or an ellipse; the length direction of the second graphic 121 is parallel to the length direction of the first graphic 111.

[0057] In the display panel proposed in some embodiments of the present disclosure, optionally, the process of the spacer 100 generally includes a coating step, an exposure step, a development step, and a baking step. The coating step is to uniformly coat the negative photoresist of the spacer 100 on the surface of the second substrate 300 of a certain thickness and size; the exposure step is to use a mask plate to expose the negative photoresist of the spacer 100; the development step is to develop the exposed second substrate 300 and wash away the unexposed negative photoresist of the spacer 100; the baking step is to place the second glass substrate in a baking furnace heated by circulating hot air, bake it at a temperature of about 230°C for 25 minutes, and solidify the developed negative photoresist to finally form the spacer 100. Therefore, the orthographic projection shape of the spacer 100 on the second substrate 300 is related to the shape and diffraction of the light-transmitting pattern 1200 in the mask plate 1000.

[0058] It should be noted that the geometric names such as rectangles, rounded rectangles and ellipses appearing in the display panel proposed in the embodiments of the present disclosure are not geometric figures in the strict sense of geometry, but may have certain changes according to the shape of the light-transmitting pattern 1200, the shape of the central compensation area, exposure diffraction, etc., and these changes do not affect the scope of protection of the present disclosure.

[0059] In related technologies, such as Figure 1 and Figure 2 As shown, in order to ensure the structure of the spacer 100 and take into account the influence of the exposure light diffraction, in the mask plate 1000 for preparing the spacer 100, the light-transmitting pattern 1200 generally adopts a regular octagon. After exposure, according to the principle of light diffraction, after the light passes through the regular octagonal light-transmitting pattern 1200 in the mask plate 1000, the edge becomes smooth, so that the orthographic projection of the spacer 100 on the second substrate 300 is basically circular. The opening size of the conventional regular octagonal light-transmitting pattern 1200 is generally controlled within 30μm, for example, Figure 1 and Figure 2As shown, the opening size of the regular octagonal light-transmitting pattern 1200 can be 28.3μm, and the orthographic projection of the formed spacer 100 on the second substrate 300 is basically circular, and the diameter of the circle is between 28.3μm and 30μm. Since the arrangement of the spacer 100 on the second substrate 300 is not only limited by the pixel size, but also needs to ensure that the spacing between the spacers 100 is greater than 6μm to avoid adhesion of adjacent spacers 100, this leads to the limited contact area between the spacer 100 and the first substrate 200 and the second substrate 300. In addition, the arrangement density of the spacer 100 on the second substrate 300 is fixed, so it is impossible to increase the overall contact area of ​​the spacer 100 by increasing the density.

[0060] The present disclosure has found through research that if the area of ​​the light-transmitting pattern 1200 on the mask plate 1000 is simply increased to increase the area of ​​the positive projection of the spacer 100 on the second substrate 300, then in the process of manufacturing the spacer 100, the light-transmitting pattern 1200 on the mask plate 1000 is a semi-transparent film, that is, the light transmittance of the light-transmitting pattern 1200 is a certain value; when the exposure gap (Cap) is a constant value, the light intensity passing through the light-transmitting pattern 1200 is as follows: Figure 3 As shown in FIG. 1 , when the size of the light-transmitting pattern 1200 in a certain direction is greater than 30 μm, a depression occurs in the center of the curve, and the light intensity in the depression decreases, such as Figure 4 As shown, the formed spacer 100 will be concave in the middle, which will affect the morphology of the spacer 100, resulting in a reduction in the contact area between the spacer 100 and the first substrate 200, and cannot achieve the purpose of increasing the contact area between the spacer 100 and the first substrate 200.

[0061] As an optional implementation, Figures 5 to 7 As shown, in the display panel proposed in some embodiments of the present disclosure, the first graphic 111 has a first long side length L1 in the first direction F1, and the first graphic 111 has a first wide side length W1 in the second direction F2; the second graphic 121 has a second long side length L2 in the first direction F1, and the second graphic 121 has a second wide side length W2 in the second direction F2; the second direction F2 is perpendicular to the first direction F1; at least one of the first long side length L1 and the first wide side length W1 is greater than or equal to 30μm.

[0062] The display panel provided in some embodiments of the present disclosure is as follows: Figures 5 to 7As shown, at least one of the first long side length L1 and the first wide side length W1 in the first graphic 111 is greater than or equal to 30μm. Accordingly, at least one of the length in the first direction F1 and the length in the second direction F2 of the light-transmitting graphic 1200 in the mask plate 1000 forming the spacer 100 is greater than or equal to 30μm. At the same time, since the light-transmitting graphic 1200 has a middle compensation area 1220, the transmittance of the middle compensation area 1220 is greater than the transmittance of the edge light-transmitting area 1210, thereby improving the exposure rate of the corresponding position of the middle compensation area 1220, forming a protruding portion 120 protruding relative to the main body of the spacer 100, thereby avoiding the defect of a depression in the spacer 100 when the size of the light-transmitting graphic 1200 in a certain direction is greater than 30μm.

[0063] The display panel provided in some embodiments of the present disclosure is as follows: Figures 5 to 7 As shown, the first direction F1 and the second direction F2 are two directions perpendicular to each other on the first figure 111 / second substrate 300, and the third direction F3 is a direction perpendicular to the first direction F1 and the second direction F2, that is, the third direction F3 is a direction perpendicular to the first figure 111 / second substrate 300, that is, the thickness direction of the spacer 100.

[0064] As an optional implementation, in the display panel proposed in some embodiments of the present disclosure, the sub-pixel array is arranged on the second substrate 300, a black matrix is ​​provided in the gaps between adjacent sub-pixels, the spacer 100 is provided on the black matrix and the first graphic 111 is located within the orthographic projection of the black matrix on the second substrate 300.

[0065] In the display panel proposed in some embodiments of the present disclosure, the sub-pixels are located between the first substrate 200 and the second substrate 300. Optionally, the sub-pixels may include red sub-pixels, green sub-pixels and blue sub-pixels, and the red sub-pixels, green sub-pixels and blue sub-pixels may be arranged in an array on the second substrate 300.

[0066] In the display panel proposed in some embodiments of the present disclosure, the black matrix is ​​located in the gap between adjacent sub-pixels, which has the functions of shielding light leakage from the backlight source, preventing color mixing of adjacent sub-pixels, and improving display contrast. It can prevent TFT malfunction and working parameter changes caused by light, and prevent low contrast caused by background light writing.

[0067] The display panel provided in some embodiments of the present disclosure can prevent the spacer 100 from shielding the sub-pixel by disposing the spacer 100 on the black matrix and making the first pattern 111 located within the orthographic projection of the black matrix on the second substrate 300.

[0068] The display panel proposed in some embodiments of the present disclosure can optionally make the outer contour of the first graphic 111 as close as possible to the outer contour of the black matrix to increase the area of ​​the first graphic 111, that is, to increase the contact area between the spacer 100 and the second substrate 300; while the area of ​​the first graphic 111 is increased, the area of ​​the second graphic 121 can also be increased synchronously, that is, to increase the contact area between the spacer 100 and the first substrate 200. At the same time, it is also necessary to pay attention to avoid adhesion problems between the spacers 100 on adjacent black matrices. For example, the first graphic 111 can be made to correspond to the shape of the black matrix. Thereby optimizing the shape of the main body 110 of the spacer 100 to increase the support area of ​​the main body 110 and the second substrate 300, and at the same time, the support area of ​​the protrusion 120 and the first substrate 200 can also be increased. That is, the present disclosure proposes an inventive concept of making the first graphic 111 correspond to the shape of the black matrix, so that the shape of the first graphic 111 is close to the shape of the black matrix and at the same time taking into account the influence of diffraction and the factors of preventing adhesion, the first graphic 111 can be retracted to a certain extent relative to the outer contour of the black matrix. Optionally, the shape of the first graphic 111 corresponds to the shape of the black matrix, which means that the outline of the first graphic 111 is the same as or similar to the outline of the black matrix, and the shape of the first graphic 111 can be changed to a certain extent or reduced in proportion to the shape of the black matrix. For example, when the shape of the black matrix is ​​a rectangular structure, the shape of the first graphic 111 can be a rectangle reduced by a certain proportion according to the rectangular structure; for another example, when the shape of the black matrix is ​​a trapezoidal structure, the shape of the first graphic 111 can be a trapezoid reduced by a certain proportion according to the trapezoidal structure.

[0069] As an optional implementation, in the mask plate 1000 proposed in some embodiments of the present disclosure, the sub-pixel array is arranged on the second substrate 300, a black matrix is ​​provided in the gaps between adjacent sub-pixels, and the orthographic projection of the light-transmitting pattern 1200 on the second substrate 300 is located within the orthographic projection of the black matrix on the second substrate 300.

[0070] In some embodiments of the present disclosure, a mask plate 1000 is proposed, in which a sub-pixel array is arranged on a second substrate 300, and a black matrix is ​​provided in the gaps between adjacent sub-pixels. By making the orthographic projection of the light-transmitting pattern 1200 on the second substrate 300 be located within the orthographic projection of the black matrix on the second substrate 300, the orthographic projection of the main body 110 determined by the light-transmitting pattern 1200 on the second substrate 300 can be located within the orthographic projection of the black matrix on the second substrate 300, so as to achieve the first pattern 111 being located within the orthographic projection of the black matrix on the second substrate 300.

[0071] The mask plate 1000 proposed in some embodiments of the present disclosure can optionally make the outer contour of the light-transmitting pattern 1200 as close as possible to the outer contour of the black matrix, so as to increase the area of ​​the first pattern 111 in the spacer 100 formed by the light-transmitting pattern 1200, that is, to increase the contact area between the spacer 100 and the second substrate 300; while the area of ​​the light-transmitting pattern 1200 is increased, the areas of the first pattern 111 and the second pattern 121 can be increased simultaneously, that is, to increase the contact area between the spacer 100 and the first substrate 200 and the second substrate 300 respectively. At the same time, it is also necessary to pay attention to avoid adhesion problems between the spacers 100 on adjacent black matrices. For example, the light-transmitting pattern 1200 can be made to correspond to the shape of the black matrix. Thereby optimizing the shape of the main body 110 of the spacer 100 to increase the support area of ​​the main body 110 and the second substrate 300, and at the same time, the support area of ​​the protrusion 120 and the first substrate 200 can also be increased. That is, the present disclosure proposes an inventive concept of making the shape of the light-transmitting pattern 1200 correspond to the shape of the black matrix, so that the shape of the first pattern 111 in the spacer 100 formed by the light-transmitting pattern 1200 is close to the shape of the black matrix and at the same time, taking into account the influence of diffraction and the factors of preventing adhesion, the light-transmitting pattern 1200 can be indented by a certain distance relative to the outer contour of the black matrix to a certain extent. Optionally, the shape of the light-transmitting pattern 1200 corresponds to the shape of the black matrix, which means that the outline of the light-transmitting pattern 1200 is the same as or similar to the outline of the black matrix, and the shape of the light-transmitting pattern 1200 can have a certain degree of change or be proportionally reduced relative to the shape of the black matrix. For example, when the shape of the black matrix is ​​a rectangular structure, the shape of the light-transmitting pattern 1200 can be a rectangle reduced by a certain proportion according to the rectangular structure; for example, when the shape of the black matrix is ​​a trapezoidal structure, the shape of the light-transmitting pattern 1200 can be a trapezoid reduced by a certain proportion according to the trapezoidal structure.

[0072] As an optional implementation, Figure 5 As shown, in the display panel provided in some embodiments of the present disclosure, the length L1 of the first long side is greater than or equal to 30 μm, and the length W1 of the first wide side is less than 30 μm.

[0073] The display panel provided in some embodiments of the present disclosure is as follows: Figure 5 As shown, due to the arrangement and spacing of sub-pixels, the length of the black matrix in the first direction F1 and the length in the second direction F2 are often not equal. For example, the length of the black matrix in the first direction F1 is greater than or equal to 30 μm, and the length in the second direction F2 is less than 30 μm.

[0074] Accordingly, the spacer 100 disposed on the black matrix is ​​limited by the size of the black matrix, and the main body 110 of the spacer 100 should not exceed the range of the black matrix, that is, the first long side length L1 can be greater than or equal to 30μm, and the first wide side length W1 can be less than 30μm.

[0075] Accordingly, in the mask plate 1000 used to prepare the spacer 100 in the display panel, the mask plate 1000 forms the main body 110 of the spacer 100 through the light-transmitting pattern 1200, that is, the shape of the first pattern 111 corresponds to the shape of the light-transmitting pattern 1200, and affected by diffraction, there may be a certain difference between the shape of the first pattern 111 and the shape of the light-transmitting pattern 1200. In order to make the first long side length L1 greater than or equal to 30 μm and the first wide side length W1 less than 30 μm, the first light-transmitting long side length L10 of the light-transmitting pattern 1200 in the first direction F1 may be greater than or equal to 30 μm, and the first light-transmitting wide side length W10 of the light-transmitting pattern 1200 in the second direction F2 may be less than 30 μm.

[0076] In the display panel proposed in some embodiments of the present disclosure, the shape of the black matrix corresponds to the shape of the spacing area between the sub-pixels, which means that the shape of the black matrix and the shape of the first graphic 111 need to be determined according to the sub-pixel setting method. At the same time, by making the first long side length L1 greater than or equal to 30μm, the area of ​​the first graphic 111 can be ensured, thereby ensuring that the contact area between the spacer 100 and the second substrate 300 is large. For example, the first long side length L1 can be 30μm, 35μm, 40μm, 45μm, 50μm, 55μm, etc.

[0077] When the shape of the first graphic 111 corresponds to the shape of the black matrix, the size of the first graphic 111 in some directions can exceed 30 μm, thereby increasing the area of ​​the first graphic 111. However, as mentioned above, the increase in the size of the first graphic 111 will cause the spacer 100 to be concave in the middle. In response to the defect that the middle part of the spacer 100 is sunken due to the increase in the dimensions of the first graphic 111 in certain directions, the present disclosure proposes an inventive concept of middle compensation. By making the transmittance of the middle compensation area 1220 located in the middle of the light-transmitting graphic 1200 greater than the transmittance of the edge light-transmitting area 1210, the transmittance and light intensity of the middle compensation area 1220 of the light-transmitting graphic 1200 can be increased, and then the thickness of the middle part of the spacer 100 can be increased. A protruding portion 120 protruding relative to the main body 110 can be formed on the main body 110 of the spacer 100 to avoid the defect of the middle part of the spacer 100 caused by the larger dimensions of the light-transmitting graphic 1200 in certain directions, so as to ensure the support area and elastic recovery ability of the spacer 100, thereby improving the support effect on the first substrate 200 and the second substrate 300, and reducing the occurrence of black Gap defects to a certain extent.

[0078] In related technologies, such as Figure 1 and Figure 2 As shown, in order to realize that the orthographic projection of the spacer 100 on the second substrate 300 is circular, a regular octagonal light-transmitting pattern 1200 is generally used in the mask plate 1000. Meanwhile, the regular octagonal light-transmitting pattern 1200 is limited by the size of the black matrix, and the size in each direction is generally less than 30 μm.

[0079] In the present disclosure, in order to increase the supporting area between the spacer 100 and the first substrate 200 and the second substrate 300, the shape of the light-transmitting pattern 1200 and the shape of the first pattern 111 can be made to correspond to the shape of the black matrix, and the size of the light-transmitting pattern 1200 and the first pattern 111 in one or certain directions is greater than or equal to 30 μm. At the same time, a central compensation area is set in the light-transmitting pattern 1200 to improve the morphology of the central depression of the spacer 100.

[0080] For example, the shape of the spacing area between the sub-pixels is a rectangle, that is, the shape of the black matrix is ​​a rectangle. The length of the rectangle in the first direction F1 is 52 μm, and the width of the rectangle in the second direction F2 is 30 μm. If the conventional spacer 100 is used, such as Figure 1 and Figure 2 As shown, the size of the conventional regular octagonal light-transmitting pattern 1200 may be 28.3 μm, and the orthographic projection of the formed spacer 100 on the second substrate 300 is substantially circular, and the diameter of the circle is between 28.3 μm and 30 μm.

[0081] Using the spacer 100 solution disclosed in the present invention, as Figures 5 to 10As shown, the shape of the light-transmitting pattern 1200 in the mask plate 1000 is made to correspond to the shape of the black matrix, so that the shape of the first pattern 111 can be made to correspond to the shape of the black matrix. That is, the shape of the light-transmitting pattern 1200 is a rectangle, and the length L10 of the first light-transmitting long side in the first direction F1 is 50 μm, and the length W10 of the first light-transmitting wide side in the second direction F2 is 28 μm; thus, in the spacer 100 prepared by the mask plate 1000, the shape of the first pattern 111 is close to a rectangle, and the length L1 of the first long side in the first direction F1 is slightly greater than 50 μm, and the length W1 of the first wide side in the second direction F2 is slightly greater than 28 μm. At the same time, since the size of the light-transmitting pattern 1200 in the first direction F1 is greater than 30 μm, the exposure intensity of the middle part of the light-transmitting pattern 1200 in the first direction F1 is relatively weak. Therefore, a middle compensation area 1220 can be set in the light-transmitting pattern 1200 so that the transmittance of the middle compensation area 1220 is greater than the transmittance of the edge light-transmitting area 1210, thereby increasing the exposure intensity of the middle part of the light-transmitting pattern 1200 in the first direction F1 of the light-transmitting pattern 1200, thickening the middle part of the spacer 100, and thereby avoiding the spacer 100 from having a concave shape in the middle.

[0082] As an optional implementation, Figure 5 As shown, in the display panel provided in some embodiments of the present disclosure, the second long side length L2 is 30% to 70% of the first long side length L1, and the second wide side length W2 is less than or equal to 5.0 μm.

[0083] In some embodiments of the present disclosure, the display panel, such as Figure 5 As shown, the second long side length L2 can be made 30% to 70% of the first long side length L1, and the second light-transmitting long side length L20 can be made 30% to 70% of the first light-transmitting long side length L10. If the second long side length L2 is less than 30% of the first long side length L1, correspondingly, the length of the second light-transmitting long side is less than 30% of the first light-transmitting long side length L10, then the compensation effect of the middle compensation area 1220 of the light-transmitting pattern 1200 is poor, and the purpose of avoiding the spacer 100 from being sunken cannot be achieved; if the second long side length L2 is greater than 70% of the first long side length L1, correspondingly, the length of the second light-transmitting long side is greater than 70% of the first light-transmitting long side length L10, then the compensation of the middle compensation area 1220 of the light-transmitting pattern 1200 is excessive, which easily leads to the spacer 100 having a poor morphology in the second direction F2.

[0084] In some embodiments of the present disclosure, the display panel, such as Figure 5As shown, the second wide side length W2 can be made less than or equal to 5.0μm, and correspondingly, the second light-transmitting wide side length W20 is less than or equal to 5.0μm. The second light-transmitting wide side length W20 will significantly affect the morphology of the compensated spacer 100. If the second light-transmitting wide side length W20 is greater than 5.0μm, a more obvious protrusion 120 will appear in the column spacer morphology, affecting the final thickness and elastic recovery performance of the protrusion 120 in the spacer 100. Optionally, the second wide side length W2 is 1.0μm to 5.0μm, and correspondingly, the second light-transmitting wide side length W20 is 1.0μm to 5.0μm.

[0085] As an optional implementation, Figure 5 As shown, in the display panel provided in some embodiments of the present disclosure, the area ratio of the second graphic 121 to the area ratio of the first graphic 111 is

[0086]

[0087] For example, when the second wide side length W2 is 1.0 μm, the second long side length L2 can be 30% of the first long side length L1; when the second wide side length W2 is 5.0 μm, the second long side length L2 can be 70% of the first long side length L1; so that the area ratio of the second figure 121 to the area of ​​the first figure 111 meets the requirements of the above formula.

[0088] As an optional implementation, Figure 5 As shown, in the display panel provided in some embodiments of the present disclosure, the area ratio of the second graphic 121 to the area ratio of the first graphic 111 is

[0089]

[0090] For example, when the second wide side length W2 is 1.2 μm, the second long side length L2 can be 50% of the first long side length L1; when the second wide side length W2 is 3.0 μm, the second long side length L2 can be 70% of the first long side length L1, so that the area ratio of the second figure 121 to the area of ​​the first figure 111 meets the requirements of the above formula.

[0091] As an optional implementation, Fig.11 and Fig.12 As shown, in the mask plate 1000 proposed in some embodiments of the present disclosure, the shape of the light-transmitting pattern 1200 is a chamfered rectangle, and the chamfer distance of the chamfered rectangle is 2.0 μm to 4.0 μm.

[0092] In some embodiments of the present disclosure, the mask plate 1000 is as follows: Fig.11 and Fig.12As shown, when the shape of the light-transmitting pattern 1200 is a chamfered rectangle, after diffraction during exposure, the main body 110 of the spacer 100 formed on the second substrate 300 is projected as a first pattern 111, and the first pattern 111 can be a corresponding rounded rectangle or ellipse. It should be noted that the first pattern 111 can be changed to a certain extent according to the light-transmitting pattern 1200 or the exposure diffraction.

[0093] Alternatively, if Fig.11 and Fig.12 As shown, the chamfer distance of the chamfered rectangle is set to 2.0 μm to 4.0 μm, so that the corners of the chamfered rectangle transparent pattern 12001 can be exposed and diffracted smoothly, thereby ensuring that the peripheral morphology of the formed spacer 100 is smooth.

[0094] In the mask plate 1000 of some embodiments of the present disclosure, as Fig.11 and Fig.12 As shown, the shape of the light-transmitting pattern 1200 is a rectangle with chamfers, and the chamfers may be set at one corner of the rectangle, or at multiple corners of the rectangle. By setting the chamfers, the exposure diffraction of the corners of the light-transmitting pattern 1200 may be improved, so that the exposure diffraction of the corners of the light-transmitting pattern 1200 is rounded, thereby ensuring that the periphery of the formed column spacer has a smooth morphology.

[0095] In the mask plate 1000 of some embodiments of the present disclosure, as Fig.11 and Fig.12 As shown, the light-transmitting long side chamfer distance C10 of the first light-transmitting long side and the light-transmitting wide side chamfer distance C20 of the first light-transmitting wide side can be the same or different. For example, the light-transmitting long side chamfer distance C10 and the light-transmitting wide side chamfer distance C20 can be set proportionally according to the first light-transmitting long side length L10 and the first light-transmitting wide side length W10.

[0096] In the mask plate 1000 of some embodiments of the present disclosure, as Fig.11 and Fig.12 As shown, the shape of the middle compensation area 1220 can be made to correspond to the shape of the light-transmitting pattern 1200, that is, the shape of the middle compensation area 1220 is also a chamfered rectangle, so that the middle exposure compensation of the light-transmitting pattern 1200 is performed by the middle compensation area 1220 in the shape of a chamfered rectangle. The chamfered rectangle of the middle compensation area 1220 can have only one corner chamfered, or multiple corners chamfered.

[0097] In the mask plate 1000 of some embodiments of the present disclosure, as Fig.11 and Fig.12As shown, the middle compensation area 1220 is in the shape of a rectangle, which may be provided with chamfers or without chamfers. Optionally, since the area of ​​the middle compensation area 1220 is generally small, the diffraction conditions of the corners of the rectangle with or without chamfers are not much different, and the rectangle may be provided with no chamfers to reduce the difficulty of setting the middle compensation area 1220.

[0098] In the mask plate 1000 of some embodiments of the present disclosure, as Fig.11 and Fig.12 As shown, optionally, the length L10 of the first light-transmitting long side is 35 μm to 50 μm; the length W10 of the first light-transmitting wide side is 18 μm to 30 μm; and the chamfer distance is 2.0 μm to 4.0 μm.

[0099] For example, the length of the first light-transmitting long side L10 can be 35μm, 38μm, 40μm, 42μm, 45μm, 48μm, 50μm, etc., the length of the first light-transmitting wide side W10 can be 18μm, 20μm, 22μm, 24μm, 26μm, 28μm, 30μm, etc., and the chamfer distance can be 2.0μm, 2.5μm, 3.0μm, 3.5μm, 4.0μm, etc.

[0100] As an optional implementation, in the mask plate 1000 provided in some embodiments of the present disclosure, as Fig.11 and Fig.12 As shown, the light transmittance of the edge light-transmitting area 1200 is 20% to 30%, and the light transmittance of the middle compensation area 1220 is 30% to 100%.

[0101] The mask plate 1000 provided in some embodiments of the present disclosure is as follows: Fig.11 and Fig.12 As shown, the transmittance of the edge light-transmitting area 1200 and the transmittance of the middle compensation area 1220 can be set according to factors such as exposure intensity and exposure amount. Optionally, the transmittance of the edge light-transmitting area 1200 can be 20% to 30%; the transmittance of the middle compensation area 1220 can be 30% to 100%. Among them, the transmittance of the edge light-transmitting area 1200 can be 20%, 22%, 23%, 25%, 27%, 29%, 30%, etc.; the transmittance of the middle compensation area 1220 can be 30%, 35%, 40%, 50%, 60%, 70%, 80%, 85%, 90%, 100%, etc. For example, the transmittance of the edge light-transmitting area 1200 can be 24%, and at the same time, the transmittance of the middle compensation area 1220 can be 100%. For another example, the light transmittance of the edge light-transmitting area 1200 can be set to 24%, while the light transmittance of the middle compensation area 1220 can be set to 95%.

[0102] The mask plate 1000 proposed in the embodiment of the present disclosure is as follows: Fig.11and Fig.12 As shown, the protrusion 120 of the spacer 100 is formed by exposing the central compensation area, so the structural form of the protrusion 120 of the spacer 100 can be controlled by adjusting the transmittance of the central compensation area.

[0103] As an optional implementation, Fig.11 and Fig.12 As shown, in the mask 1000 proposed in some embodiments of the present disclosure, the area of ​​the middle compensation region 1220 is 1% to 20% of the area of ​​the light-transmitting pattern 1200 .

[0104] In the mask plate 1000 of some embodiments of the present disclosure, as Fig.11 and Fig.12 As shown, by making the area of ​​the middle compensation region 1220 1% to 20% of the area of ​​the light-transmitting pattern 1200. The middle compensation region 1220 can improve the morphology of the spacer 100, so that the middle of the main body 110 of the spacer 100 is flat or there is a protrusion 120 that does not affect the performance of the spacer 100. The size of the middle compensation region 1220 is directly related to the exposure intensity of the middle of the light-transmitting pattern 1200. If the area of ​​the middle compensation region 1220 is too large or too small, the morphology of the spacer 100 will be abnormal. If the area of ​​the middle compensation region 1220 is too large, the exposure intensity is too high, and the middle part of the spacer 100 is over-compensated, which may easily cause the raised portion 120 in the spacer 100 to be overly protruding and appear as a small hill, affecting the final thickness and elastic recovery ability of the spacer 100; if the area of ​​the middle compensation region 1220 is too small, the exposure intensity is too low, and the middle part of the spacer 100 is too little compensated, which may easily cause depressions to still exist on the spacer 100, affecting the support area of ​​the spacer 100.

[0105] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0106] In addition, in the present disclosure, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0107] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this disclosure.

[0108] Although embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A display panel, characterized in that: The display panel comprises a first substrate and a second substrate arranged opposite to each other, and a spacer and a sub-pixel located between the first substrate and the second substrate, wherein the spacer has a main body and a convex part, and the first substrate, the convex part, the main body and the second substrate are sequentially overlapped in the thickness direction of the display panel; The orthographic projection of the main body on the second substrate is a first figure, the orthographic projection of the protrusion on the second substrate is a second figure, the second figure is within the first figure and is smaller than the first figure; The plane where the outer contour of the contact surface between the protrusion and the main body lies is the first reference plane; the plane passing through the exact center of the protrusion and perpendicular to the first reference plane is the second reference plane; A tangent line at an outer contour of a contact surface between the protrusion and the main body is a first tangent line, and the first tangent line is located on the second reference plane; an intersection line between the first reference plane and the second reference plane is a first intersection line; The first tangent line forms a first acute angle with the first intersection line; A tangent line at the outer contour of the contact surface between the main body and the second substrate is a second tangent line, and the second tangent line is located on the second reference plane; the second reference plane intersects with the plane where the second substrate is located to form a second intersection line; The second tangent line forms a second acute angle with the second intersection line; The first acute angle is smaller than the second acute angle.

2. The display panel according to claim 1, wherein: The first acute angle is 0° to 20°.

3. The display panel according to claim 1, wherein: The first figure is a rectangle, a rounded rectangle, or an ellipse; The second figure is a rectangle, a rounded rectangle, or an ellipse; The length direction of the second figure is parallel to the length direction of the first figure.

4. The display panel according to claim 3, wherein: The first graphic has a first long side length in the first direction, and the first graphic has a first wide side length in the second direction; the second graphic has a second long side length in the first direction, and the second graphic has a second wide side length in the second direction; the second direction is perpendicular to the first direction; at least one of the first long side length and the first wide side length is greater than or equal to 30 μm.

5. The display panel according to claim 4, wherein: The sub-pixel array is arranged on the second substrate, a black matrix is ​​arranged in the gaps between adjacent sub-pixels, the spacer is arranged on the black matrix, and the first pattern is located within the orthographic projection of the black matrix on the second substrate.

6. The display panel according to claim 5, wherein: The length of the first long side is greater than or equal to 30 μm, and the length of the first wide side is less than 30 μm.

7. The display panel according to claim 6, wherein: The length of the second long side is 30% to 70% of the length of the first long side, and the length of the second wide side is less than or equal to 5.0 μm.

8. The display panel according to claim 7, wherein: The ratio of the area of ​​the second figure to the area of ​​the first figure is 9. The display panel according to claim 8, wherein: The ratio of the area of ​​the second figure to the area of ​​the first figure is 10. A mask plate, characterized in that: The mask plate is used to prepare the display panel as described in any one of claims 1 to 9; the mask plate includes a mask substrate and a light-transmitting pattern arranged on the mask substrate, the light-transmitting pattern includes an edge light-transmitting area and a central compensation area located in the edge light-transmitting area; the shape of the light-transmitting pattern is a rectangle, a rounded rectangle, or an ellipse; the shape of the central compensation area is a rectangle, a rounded rectangle, or an ellipse; the length directions of the light-transmitting pattern and the central compensation area are parallel; the transmittance of the central compensation area is greater than the transmittance of the edge light-transmitting area.

11. The mask plate according to claim 10, characterized in that: The sub-pixel array is arranged on the second substrate, a black matrix is ​​arranged in the gaps between adjacent sub-pixels, and the orthographic projection of the light-transmitting pattern on the second substrate is located within the orthographic projection of the black matrix on the second substrate.

12. The mask plate according to claim 11, characterized in that: The shape of the light-transmitting pattern is a chamfered rectangle, and the chamfer distance of the chamfered rectangle is 2.0 μm to 4.0 μm.

13. The mask plate according to any one of claims 10 to 12, characterized in that: The light transmittance of the edge light-transmitting area is 20% to 30%, and the light transmittance of the middle compensation area is 30% to 100%.

Images