CN113823669A

CN113823669A - Display substrate, display panel and mask set

Info

Publication number: CN113823669A
Application number: CN202111230112.2A
Authority: CN
Inventors: 杭宗秋; 张强; 王笑鸽
Original assignee: BOE Technology Group Co Ltd; Mianyang BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Mianyang BOE Optoelectronics Technology Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2021-12-21

Abstract

The embodiment of the application provides a display substrates, display panel, mask group relates to and shows technical field, and this display substrates includes: the pixel structure comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a spacer group; the first sub-pixels are located at four vertex angles of the first virtual quadrangle, the second sub-pixels are located inside the first virtual quadrangle, and an overlapping area exists between the area where the third sub-pixels are located and the area where the first virtual quadrangle is located; the isolation pad group is arranged in the area where part of the first virtual quadrangle is located, the isolation pad group comprises at least one main isolation pad and at least one auxiliary isolation pad, and the area where each isolation pad in the same isolation pad group is located and the area where the same first virtual quadrangle is located have an overlapping area. The display substrate can greatly reduce the probability that the mask scratches the spacer and other films in the display substrate in the preparation process, and improve the quality of the display panel.

Description

Display substrate, display panel and mask set

Technical Field

The application relates to the technical field of display, in particular to a display substrate, a display panel and a mask set.

Background

An OLED (Organic Light-Emitting Diode) display panel has become a mainstream display product in the market due to its advantages of wide color gamut, high resolution, high contrast, low power consumption, flexibility, and the like. The spacer (PS) in the OLED display product supports a FMM Mask (Fine Metal Mask) during the evaporation process, but in the related art, the spacer is designed more simply, and the distribution density of the spacer in the display area is higher.

Currently, a new design scheme for spacers is needed.

Disclosure of Invention

The embodiment of the application provides a display substrate, a display panel and a mask set, the display substrate can greatly reduce the probability that the mask scratches a spacer and other films in the display substrate, and the quality of the display panel is improved.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in one aspect, an embodiment of the present application provides a display substrate, including: the pixel structure comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a spacer group;

the first sub-pixels are located at four vertex angles of a first virtual quadrangle, the second sub-pixels are located inside the first virtual quadrangle, and an overlapping area exists between an area where the third sub-pixels are located and an area where the first virtual quadrangle is located;

the shock-proof pad group is arranged in the area where part of the first virtual quadrangle is located, the shock-proof pad group comprises at least one main shock-proof pad and at least one auxiliary shock-proof pad, and the area where each shock-proof pad in the same shock-proof pad group is located and the area where the same first virtual quadrangle is located have an overlapping area.

In some embodiments of the present application, the third sub-pixel is located on a side of the first virtual quadrangle; alternatively, the third sub-pixel is located inside the first virtual quadrangle.

In some embodiments of the present application, the third sub-pixel is located at a center position of a side of the first virtual quadrangle, and the second sub-pixel is located at an intersection of a diagonal of the first virtual quadrangle;

the first sub-pixel, the second sub-pixel and the two third sub-pixels are respectively positioned at four vertex angles of a second virtual quadrangle, and the four second virtual quadrangles form the first virtual quadrangle;

wherein the spacer group comprises one main spacer and a plurality of auxiliary spacers, and the main spacer and the auxiliary spacers are located in different second virtual quadrangles.

In some embodiments of the present application, the set of spacers includes one main spacer and two auxiliary spacers, and three spacers are respectively located in different second virtual quadrangles.

In some embodiments of the present application, the second virtual quadrangle on which the auxiliary spacer is disposed has a side in common with the second virtual quadrangle on which the main spacer is disposed.

In some embodiments of the present application, the spacer group includes one main spacer and three auxiliary spacers, and four spacers are respectively located in different second virtual quadrangles.

In some embodiments of the present application, the second sub-pixel is located inside a first virtual triangle, the third sub-pixel is located inside a second virtual triangle, the first virtual triangle and the second virtual triangle form the first virtual quadrangle, and the first virtual triangle and the second virtual triangle are arranged in mirror symmetry;

the spacer group comprises one main spacer and a plurality of auxiliary spacers, the main spacer is located between the first sub-pixel and the third sub-pixel, and the auxiliary spacers are located on the side edges of the first virtual quadrangle.

In some embodiments of the present application, the set of spacers includes one of the primary spacers and two of the secondary spacers;

the two auxiliary spacers are respectively located on two adjacent sides of the first virtual quadrangle, the main spacer is located between the two auxiliary spacers, and the main spacer and the two auxiliary spacers are arranged around one end of the same first sub-pixel.

In some embodiments of the present application, the third sub-pixel includes two pixel blocks, two of the pixel blocks are respectively located inside two different third virtual triangles, and the two third virtual triangles are arranged in mirror symmetry;

the two first sub-pixels are respectively located at two vertex angles of the third virtual triangle, the intersection point of diagonal lines of the first virtual quadrangle is the third vertex angle of the third virtual triangle, the two third virtual triangles form the second virtual triangle, and the four third virtual triangles form the first virtual quadrangle.

In some embodiments of the present application, the minimum distance between the main spacer and the first sub-pixel is a first distance, and the minimum distance between the main spacer and the second sub-pixel is a second distance;

the minimum distance between the auxiliary spacer and the first sub-pixel is a third distance, and the minimum distance between the auxiliary spacer and the second sub-pixel is a fourth distance;

wherein the first pitch is less than the second pitch and the third pitch is less than the fourth pitch.

In some embodiments of the present application, a minimum distance between the auxiliary spacer and the second sub-pixel in the adjacent first virtual quadrangle is a fifth distance, and a minimum distance between the auxiliary spacer and the third sub-pixel is a sixth distance;

or, the minimum distance between the auxiliary spacer and the second sub-pixel is a fifth distance, and the minimum distance between the auxiliary spacer and the third sub-pixel in the adjacent first virtual quadrangle is a sixth distance;

wherein the fifth pitch is greater than the sixth pitch.

In some embodiments of the present application, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel.

In some embodiments of the present application, the first sub-pixel, the second sub-pixel, and the third sub-pixel are each quadrilateral in shape;

or, the first sub-pixel and the second sub-pixel are rod-shaped, and the third sub-pixel is horseshoe-shaped.

In another aspect, embodiments of the present application provide a display panel including the display substrate as described above.

In yet another aspect, embodiments of the present application provide a mask set for preparing the display substrate as described above; the mask plate group comprises a first mask plate, a second mask plate, a third mask plate and a fourth mask plate;

wherein the first reticle includes a first open region for forming the first sub-pixel, the second reticle includes a second open region for forming the second sub-pixel, the third reticle includes a third open region for forming the third sub-pixel, and the fourth reticle includes a fourth open region for forming the set of spacers;

the fourth opening region includes at least one primary opening configured to form the primary septum and at least one secondary opening configured to form the secondary septum.

The embodiment of the application provides a display substrates, display panel, mask group, and this display substrates includes: the pixel structure comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a spacer group; the first sub-pixels are located at four vertex angles of a first virtual quadrangle, the second sub-pixels are located inside the first virtual quadrangle, and an overlapping area exists between an area where the third sub-pixels are located and an area where the first virtual quadrangle is located; the shock-proof pad group is arranged in the area where part of the first virtual quadrangle is located, the shock-proof pad group comprises at least one main shock-proof pad and at least one auxiliary shock-proof pad, and the area where each shock-proof pad in the same shock-proof pad group is located and the area where the same first virtual quadrangle is located have an overlapping area.

Therefore, the spacer group is arranged in the area where part of the first virtual quadrangles are located, the spacer group comprises at least one main spacer and at least one auxiliary spacer, and the area where each spacer in the same spacer group is located and the area where the same first virtual quadrangle is located are overlapped, so that the supporting effect of the spacer group on the fine metal mask in the evaporation process can be enhanced to a great extent, the probability that the display substrate is scratched by fine metal in the evaporation process is reduced, and the quality of the display substrate is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 and fig. 2 are schematic structural diagrams of two related display substrates according to embodiments of the present disclosure;

fig. 3 to fig. 6e are schematic structural diagrams of fourteen display substrates provided in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Throughout the specification and claims, the term "comprising" is to be interpreted in an open, inclusive sense, i.e., as "including, but not limited to," unless the context requires otherwise. In the description herein, the terms "one embodiment," "some embodiments," "example," "certain examples," or "some examples" or the like are intended to indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing identical items or similar items having substantially the same functions and actions, and are used only for clearly describing technical solutions of the embodiments of the present application, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

In the development process of an Active-matrix organic light emitting diode (AMOLED) display technology, a spacer is used as a protective umbrella for a display area to prevent an FMM Mask (Fine Metal Mask) from scratching an existing film layer in a display substrate in the evaporation and alignment process of a light-emitting functional layer material. Referring to fig. 1 or fig. 2, in a related art OLED (Organic light emitting diode) display product, the spacers 4 are designed individually, and in order to satisfy the supporting effect of the spacers 4 on the FMM mask, the distribution density of the spacers 4 in the display area of the display substrate is very high. The high-density spacer design occupies more space in the display substrate on one hand; on the other hand, the risk of the spacer itself being crushed by the FMM reticle is increased, thereby causing anomalies in the display substrate, including but not limited to dark spots in the display, dropped film debris (particles) within the display area, or encapsulation failures to the light emitting functional layer.

To this end, embodiments of the present application provide a display substrate, as shown with reference to fig. 3 or 4, including: a first subpixel 1, a second subpixel 2, a third subpixel 3, and a spacer group 400;

the first sub-pixel 1 is positioned at four vertex angles of the first virtual quadrangle 101, the second sub-pixel 2 is positioned inside the first virtual quadrangle 101, and an overlapping area exists between the area where the third sub-pixel 3 is positioned and the area where the first virtual quadrangle 101 is positioned;

the spacer group 400 is arranged in an area where a part of the first virtual quadrangle 101 is located, the spacer group 400 includes at least one main spacer 41 and at least one auxiliary spacer 42, and an overlapping area exists between an area where each spacer (41 or 42) in the same spacer group 400 is located and an area where the same first virtual quadrangle 101 is located.

The above "located" generally means that the center point of the sub-pixel (1, 2 or 3) overlaps the corner, side or inner region of the first virtual quadrangle 101.

The center point of the sub-pixel may be a geometric center of the sub-pixel pattern, or may be a center of a light emitting region of the sub-pixel, where the center of the light emitting region is a position where the light emitting intensity is maximum.

In an exemplary embodiment, the shape of each sub-pixel may be a polygon, for example: regular polygons such as triangle, quadrangle and pentagon; alternatively, the shape of each sub-pixel may be an irregular shape in which a portion is removed or added on the basis of a polygon, and the present application is not limited thereto.

In an exemplary embodiment, as shown with reference to fig. 3, the second sub-pixel 2 is located at an intersection of diagonals of the first virtual quadrangle 101.

The overlapping area between the area of the third sub-pixel 3 and the area of the first virtual quadrangle 101 means that: the area in which the third sub-pixel 3 is located at least partially overlaps the area in which the first virtual quadrangle 101 is located. Specifically, referring to fig. 3, the third sub-pixel 3 is located on the side of the first virtual quadrangle 101; alternatively, referring to fig. 4, the third sub-pixel 3 is located inside the first virtual quadrangle 101.

In an exemplary embodiment, each of the main spacers 41 and the auxiliary spacers 42 in the same spacer group 400 may be disposed in communication; alternatively, as shown in fig. 3 or 4, the main spacers 41 and the auxiliary spacers 42 in the same spacer group 400 are disconnected.

The main spacer 41 and the auxiliary spacer 42 are made of the same material, and both may be made of resin material, for example: the main spacer 41 and the auxiliary spacer 42 are made of light-transmitting resin.

The height of the main spacers 41 in the substrate direction perpendicular to the display substrate is greater than the height of the auxiliary spacers 42 in the substrate direction perpendicular to the display substrate. The height difference between the two is not limited, and can be determined according to actual conditions.

The projection shapes of the main spacer 41 and the auxiliary spacer 42 in the substrate direction parallel to the display substrate are not limited, and may be polygonal, for example, and may be determined according to actual conditions.

In an exemplary embodiment, the projected area of the auxiliary spacers 42 in the substrate direction parallel to the display substrate may be 1/3-1/2 of the projected area of the main spacers 41 in the substrate direction parallel to the display substrate.

In the display substrate provided in the embodiment of the present application, two adjacent first virtual quadrangles 101 share one side or one vertex, and in order to reduce the probability that the spacer group 400 is crushed, in the case that the spacer group 400 has a sufficient supporting function, the lower the arrangement density of the spacer group 400 is, the better, and therefore, only the region where a part of the first virtual quadrangles 101 is located is provided with the spacer group 400.

It should be noted that, in the embodiments of the present application, the virtual shapes are, for example: the first virtual quadrangle mentioned above, and the second virtual quadrangle, the first virtual triangle, the second virtual triangle, and the like mentioned later do not exist in practice, but are only concepts proposed for convenience of describing the positional relationship of the sub-pixels.

In the evaporation process, the main spacer 41 plays a main supporting role for the FMM mask, the auxiliary spacer 42 plays an auxiliary supporting role for the FMM mask, when the FMM mask contacts the main spacer 41 and compresses the main spacer 41, the auxiliary spacer 42 can increase the contact area between the spacer group 400 and the FMM mask and support the FMM mask in an auxiliary manner, so that the main spacer 41 is prevented from being further compressed, and the main spacer 41 is prevented from being crushed.

In the embodiment of the application, since the region where each spacer (41 or 42) in the same spacer group 400 is located and the region where the same first virtual quadrangle 101 is located have an overlapping region, it can be understood that, in the region range where the same first virtual quadrangle 101 is located, there are both the main spacer 41 and the auxiliary spacer 42, so that the supporting effect of the spacer group 400 on the FMM mask in the local range is greatly enhanced, the main spacer 41 is prevented from being crushed, and the FMM mask is also prevented from further scratching the film layers in each sub-pixel after the main spacer 41 is crushed. In addition, since the supporting function of the spacer group 400 is greatly improved compared with the supporting function of a single spacer in the related art, the arrangement density of the spacer group 400 can be reduced, and the design space of the display substrate is greatly saved.

In some embodiments of the present application, as illustrated with reference to fig. 3, the third sub-pixel 3 is located on a side of the first virtual quadrangle; alternatively, referring to fig. 4, the third sub-pixel 3 is located inside the first virtual quadrangle.

In an exemplary embodiment, referring to fig. 3, the third sub-pixel 3 is located at the center position of the side of the first virtual quadrangle 101, and the second sub-pixel 2 is located at the intersection of the diagonals of the first virtual quadrangle 101; the first sub-pixel 1, the second sub-pixel 2 and the two third sub-pixels 3 are respectively located at four vertex angles of the second virtual quadrangle 102, and the four second virtual quadrangles 102 form a first virtual quadrangle 101;

wherein the spacer group 400 includes one main spacer 41 and a plurality of auxiliary spacers 42, and the main spacer 41 and the auxiliary spacers 42 are located in different second virtual quadrangles 102.

The specific number of the auxiliary spacers 42 is not limited, and for example, the number may be 2, 3, 4 or more, and may be specifically determined according to the size of the design space of the display substrate and the size of the auxiliary spacers 42.

It should be noted that the situation that the main spacer 41 and the auxiliary spacer 42 are located in different second virtual quadrangles 102 may include the following: only one spacer (41 or 42) is arranged in one second virtual quadrangle 102; alternatively, only one spacer (41 or 42) is disposed in one second virtual quadrangle 102, i.e. a plurality of auxiliary spacers 42 may be disposed in the same second virtual quadrangle 102.

In some embodiments of the present application, as shown with reference to fig. 5a, 5b and 5c, the spacer group 400 includes one main spacer 41 and two auxiliary spacers 42, and three spacers (41 or 42) are respectively located in different second virtual quadrangles 102, and it can be understood that one spacer (41 or 42) is located in one second virtual quadrangle 102.

Specifically, referring to fig. 5a, 5b and 5c, the second virtual quadrangle 102 provided with the auxiliary spacers 42 and the second virtual quadrangle 102 provided with the main spacers 41 have a common side, so that one vertex of the two second virtual quadrangles 102 provided with the auxiliary spacers 42 is common.

Alternatively, one of the second virtual quadrangles 102 where the auxiliary spacers 42 are disposed and the second virtual quadrangle 102 where the main spacer 41 is disposed have a common side, so that the other second virtual quadrangle 102 where the auxiliary spacers 42 are disposed and a vertex of the second virtual quadrangle 102 where the main spacer 41 is disposed are common.

In this way, the supporting effect of the spacer group 400 on the FMM mask within the local range can be greatly improved, and in addition, the supporting effect of the spacer group 400 is greatly improved compared with the supporting effect of a single spacer in the related art, so that the setting density of the spacer group 400 can be reduced, and the setting density of the spacer group 400 is at least reduced by 1/3 compared with the setting density of the spacer in the related art.

In some embodiments of the present application, as shown with reference to fig. 5d and 5e, the spacer group 400 includes one main spacer 41 and one auxiliary spacer 42, and two spacers (41 and 42) are located inside any two second virtual quadrangles 102 in the first virtual quadrangle 101.

In some embodiments of the present application, as shown with reference to fig. 5f, the spacer group 400 comprises two main spacers 41 and two auxiliary spacers 42, one spacer (41 or 42) is disposed inside each second virtual quadrangle 102, and one vertex angle of the two second virtual quadrangles 102 disposed with the main spacers 41 is common.

In some embodiments of the present application, illustrated with reference to fig. 5g, the spacer group 400 comprises one main spacer 41 and three auxiliary spacers 42, four spacers being located in different second virtual quadrangles 102, respectively.

The meaning of the four spacers respectively located in the different second virtual quadrangles 102 is: the main spacer 41 is located inside any one of the second virtual quadrangles 102 among the first virtual quadrangles 101, and the three auxiliary spacers 42 are located inside the remaining three second virtual quadrangles 102, respectively.

Thus, the supporting effect of the spacer group 400 on the FMM mask in the local range can be further improved, the main spacers 41 are prevented from being crushed to a great extent, and the FMM mask is prevented from further scratching the film layers in the sub-pixels after the main spacers 41 are crushed. In addition, since the supporting function of the spacer group 400 is greatly improved compared with the supporting function of a single spacer in the related art, the arrangement density of the spacer group 400 can be reduced, and the design space of the display substrate is greatly saved.

In some exemplary embodiments, referring to fig. 5a to 5c, and fig. 5f to 5g, in the case where the spacer group 400 includes three spacers (41 or 42) or the spacer group 400 includes four spacers (41 or 42), each spacer is disposed around the second sub-pixel 2 located at the center position of the first virtual quadrangle 101.

In some exemplary embodiments, referring to fig. 4, the second sub-pixel 2 is located inside the first virtual triangle 103, the third sub-pixel 3 is located inside the second virtual triangle 104, the first virtual triangle 103 and the second virtual triangle 104 form the first virtual quadrangle 101, and the first virtual triangle 103 and the second virtual triangle 104 are arranged in mirror symmetry;

as shown in fig. 6a, the spacer group 400 includes a main spacer 41 and a plurality of auxiliary spacers 42, the main spacer 41 is located between the first sub-pixel 1 and the third sub-pixel 3, and the auxiliary spacers 42 are located on the sides of the first virtual quadrangle 101.

For example, referring to fig. 6a, 6b and 6c, the spacer group 400 includes one main spacer 41 and two auxiliary spacers 42; the two auxiliary spacers 42 are respectively located on two adjacent sides of the first virtual quadrangle 101, the main spacer 41 is located between the two auxiliary spacers 42, and the main spacer 41 and the two auxiliary spacers 42 are both arranged around one end a of the same first sub-pixel 1.

In some exemplary embodiments of the present application, in the case that the spacer group 400 includes one main spacer 41 and two auxiliary spacers 42, as shown with reference to fig. 6a, the two auxiliary spacers 42 are respectively located on two adjacent sides of the first virtual quadrangle 101, and the main spacer 41 is located between the two auxiliary spacers 42; the main spacer 41 and the two auxiliary spacers 42 may be disposed around one end of any one of the first sub-pixels 1 at four vertex angles of the first virtual quadrangle 101, which is close to the center of the first virtual quadrangle 101, and may be determined according to actual situations, which is not limited herein.

In some exemplary embodiments, referring to fig. 6b and 6c, in the case that the arrangement positions of the main spacer 41 and the auxiliary spacer 42 are determined, the arrangement angles of the main spacer 41 and the auxiliary spacer 42 are not limited herein, and may be determined according to actual conditions.

In practical application, under the condition that the thickness of the light-emitting functional layer of the second sub-pixel 2 is greater than that of the light-emitting functional layer of the first sub-pixel 1, and the thickness of the light-emitting functional layer of the second sub-pixel 2 is greater than that of the light-emitting functional layer of the third sub-pixel 3, the arrangement position of the auxiliary spacer 42 shown in fig. 6b needs to be closer to the first sub-pixel 1 and the third sub-pixel, and is far away from the second sub-pixel 2, so that a better supporting effect on the FMM mask can be achieved in the evaporation process, the probability that the FMM mask crushes the main spacer 41 is greatly reduced, the probability that the FMM mask scratches a film layer already arranged in the display substrate is also reduced, and the quality of the display substrate is improved.

In some embodiments of the present application, referring to fig. 6 a-6 e, the third sub-pixel 3 comprises two pixel blocks (not labeled) respectively located inside two different third virtual triangles 104 as shown in fig. 6c, the two third virtual triangles 104 being arranged mirror-symmetrically; the two first sub-pixels 1 are respectively located at two vertex angles of the third virtual triangle 104, the intersection point of the diagonal lines of the first virtual quadrangle 101 is the third vertex angle of the third virtual triangle 104, the two third virtual triangles 104 form the second virtual triangle 103, and the four third virtual triangles 104 form the first virtual quadrangle 101.

In some embodiments of the present application, as shown with reference to fig. 5 c-5 g, the minimum spacing between the main spacer 41 and the first sub-pixel 1 is a first spacing L1, and the minimum spacing between the main spacer 41 and the second sub-pixel 2 is a second spacing L2;

the minimum distance between the auxiliary spacer 42 and the first sub-pixel 1 is a third distance L3, and the minimum distance between the auxiliary spacer 42 and the second sub-pixel 2 is a fourth distance L4;

the first distance L1 is smaller than the second distance L2, and the third distance L3 is smaller than the fourth distance L4.

In an exemplary embodiment, the first spacing L1: the second spacing L2 is in a range of 4.5: 5.5-3: 7, and the third spacing L3: the fourth spacing L4 is also in a range of 4.5:5.5 to 3: 7. For example, the first spacing L1: second distance L2 — third distance L3: the fourth spacing L4 is 4: 6.

In practical application, when the thickness of the light-emitting functional layer of the first sub-pixel 1 is smaller than that of the light-emitting functional layer of the second sub-pixel 2, and the thickness of the light-emitting functional layer of the third sub-pixel 3 is smaller than that of the light-emitting functional layer of the second sub-pixel, each spacer (41 or 42) is arranged far away from the second sub-pixel 2 and close to the first sub-pixel 1 or the third sub-pixel 3, so that in the evaporation process, a better supporting effect on the FMM mask can be achieved, the probability that the FMM mask crushes the main spacer 41 is greatly reduced, the probability that the FMM mask scratches a film layer already arranged in a display substrate is also reduced, and the quality of the display substrate is improved.

In some embodiments of the present application, referring to fig. 6 b-6 e, the minimum distance between the auxiliary spacer 42 and the second sub-pixel 2 in the adjacent first virtual quadrangle 101 is a fifth distance L5, and the minimum distance between the auxiliary spacer 42 and the third sub-pixel 3 is a sixth distance L6;

or, the minimum distance between the auxiliary spacer 42 and the second sub-pixel 2 is the fifth distance L5, and the minimum distance between the auxiliary spacer 42 and the third sub-pixel 3 in the adjacent first virtual quadrangle 101 is the sixth distance L6; wherein the fifth spacing L5 is greater than the sixth spacing L6.

In some embodiments of the present application, the fifth spacing L5 is: the sixth distance L6 is in a range of 4.5:5.5 to 3: 7. For example, fifth spacing L5: the sixth spacing L6 is 4: 6.

In some embodiments of the present application, the first sub-pixel 12 is a blue sub-pixel (B), the second sub-pixel 2 is a red sub-pixel (R), and the third sub-pixel 3 is a green sub-pixel (G).

In some embodiments of the present application, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 are all quadrilateral in shape;

alternatively, the first subpixel 1 and the second subpixel 2 have a rod shape, and the third subpixel 3 has a horseshoe shape.

It should be noted that the horseshoe shape is a closed figure formed by an arc line and a straight line, and the specific angle and size of the horseshoe shape can be determined according to actual conditions.

Embodiments of the present application provide a display panel including the above display substrate.

The display panel provided by the embodiment of the present application may be a flexible display panel (also referred to as a flexible screen) or a rigid display panel (i.e., a display screen that cannot be bent), and is not limited herein. The display panel may be an OLED (Organic Light-Emitting Diode) display panel, and may also be any product or component with a display function, such as a television, a digital camera, a mobile phone, a tablet computer, and the like, which includes an OLED.

The OLED display panel includes an AMOLED (Active-matrix organic light emitting diode) display panel and a PMOLED (Passive-matrix organic light emitting diode) display panel.

It should be noted that, in the embodiment of the present application, the display panel is exemplified as an OLED display panel, and in practical applications, the display panel may also be a liquid crystal display panel or other types of display panels, which may be determined according to practical situations, and is not limited herein.

In the display panel provided by the embodiment of the application, because the region where each spacer (41 or 42) in the same spacer group 400 is located and the region where the same first virtual quadrangle 101 is located have an overlapping region, in this way, in the region range where the same first virtual quadrangle 101 is located, there are both the main spacer 41 and the auxiliary spacer 42, so that the supporting effect of the spacer group 400 on the FMM mask in the local range is greatly enhanced, the main spacer 41 is prevented from being crushed, and the FMM mask is also prevented from further scratching the film layers in each sub-pixel after the main spacer 41 is crushed. In addition, since the supporting function of the spacer group 400 is greatly improved compared with the supporting function of a single spacer in the related art, the arrangement density of the spacer group 400 can be reduced, and the design space of the display substrate is greatly saved.

Embodiments of the present application provide a mask set for preparing a display substrate as described above; the mask group comprises a first mask, a second mask, a third mask and a fourth mask;

wherein, the first mask comprises a first opening region for forming the first sub-pixel 1, the second mask comprises a second opening region for forming the second sub-pixel 2, the third mask comprises a third opening region for forming the third sub-pixel 3, and the fourth mask comprises a fourth opening region for forming the spacer group 400;

the fourth opening region includes at least one main opening configured to form a main spacer 41 and at least one auxiliary opening configured to form an auxiliary spacer 42.

Specifically, the shape of the first open area corresponds to the shape of the first sub-pixel 1, the shape of the second open area corresponds to the shape of the second sub-pixel 2, and the shape of the third open area corresponds to the shape of the third sub-pixel 3. The shape of the main opening in the fourth opening region corresponds to the shape of the main spacer 41, and the shape of the auxiliary opening in the fourth opening region corresponds to the shape of the auxiliary spacer 42, and it should be noted that all the shapes described herein are projection shapes of the first sub-pixel 1, the second sub-pixel 2, the third sub-pixel 3, the main spacer 41, and the auxiliary spacer 42 on the substrate of the display substrate.

In the display substrate manufactured by using the mask set provided by the embodiment of the application, because the region where each spacer (41 or 42) in the same spacer set 400 is located and the region where the same first virtual quadrangle 101 is located have an overlapping region, in this way, in the region range where the same first virtual quadrangle 101 is located, the main spacer 41 exists, and the auxiliary spacer 42 also exists, so that the supporting effect of the spacer set 400 on the FMM mask in a local range is greatly enhanced, the main spacer 41 is prevented from being crushed, and the FMM mask is also prevented from further scratching the film layers in each sub-pixel after the main spacer 41 is crushed. In addition, since the supporting function of the spacer group 400 is greatly improved compared with the supporting function of a single spacer in the related art, the arrangement density of the spacer group 400 can be reduced, and the design space of the display substrate is greatly saved.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A display substrate, comprising: the pixel structure comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a spacer group;

2. The display substrate of claim 1, wherein the third sub-pixel is located on a side of the first virtual quadrangle; alternatively, the third sub-pixel is located inside the first virtual quadrangle.

3. The display substrate of claim 1, wherein the third sub-pixel is located at a center position of a side of the first virtual quadrangle and the second sub-pixel is located at an intersection of a diagonal of the first virtual quadrangle;

4. The display substrate of claim 3, wherein the set of spacers comprises one main spacer and two auxiliary spacers, and three spacers are respectively located in different second virtual quadrangles.

5. The display substrate of claim 4, wherein the second virtual quadrilateral on which the auxiliary spacers are disposed has a side in common with the second virtual quadrilateral on which the main spacers are disposed.

6. The display substrate of claim 3, wherein the set of spacers comprises one main spacer and three auxiliary spacers, and four spacers are respectively located in different second virtual quadrangles.

7. The display substrate according to claim 1, wherein the second sub-pixel is located inside a first virtual triangle, the third sub-pixel is located inside a second virtual triangle, the first virtual triangle and the second virtual triangle form the first virtual quadrangle, and the first virtual triangle and the second virtual triangle are arranged in mirror symmetry;

8. The display substrate according to claim 7, wherein the spacer group comprises one main spacer and two auxiliary spacers;

9. The display substrate according to claim 7, wherein the third sub-pixel comprises two pixel blocks, two of the pixel blocks are respectively located inside two different third virtual triangles, and the two third virtual triangles are arranged in mirror symmetry;

10. The display substrate according to any one of claims 1 to 6, wherein the minimum distance between the main spacer and the first sub-pixel is a first distance, and the minimum distance between the main spacer and the second sub-pixel is a second distance;

11. The display substrate according to any one of claims 1 to 2 and 7 to 9,

the minimum distance from the auxiliary spacer to the second sub-pixel in the adjacent first virtual quadrangle is a fifth distance, and the minimum distance from the auxiliary spacer to the third sub-pixel is a sixth distance;

wherein the fifth pitch is greater than the sixth pitch.

12. The display substrate of claim 1, wherein the first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel.

13. The display substrate according to claim 1, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel are each quadrilateral in shape;

14. A display panel comprising the display substrate according to any one of claims 1 to 13.

15. A reticle set for use in preparing a display substrate according to any one of claims 1 to 13; the mask plate group comprises a first mask plate, a second mask plate, a third mask plate and a fourth mask plate;