CN113960839B

CN113960839B - Display panel, preparation method thereof and display device

Info

Publication number: CN113960839B
Application number: CN202111221911.3A
Authority: CN
Inventors: 王景余; 庞家齐; 陈建; 潘瑞琦; 滕征远; 李哲
Original assignee: BOE Technology Group Co Ltd; Chongqing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chongqing BOE Optoelectronics Technology Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2023-10-20
Anticipated expiration: 2041-10-20
Also published as: CN113960839A

Abstract

The invention discloses a display panel, a preparation method thereof and a display device, wherein the display panel comprises an array substrate and a color film substrate which are formed by box alignment; the array substrate includes: the first substrate comprises a first substrate base plate, a first main isolation pad structure and a first auxiliary isolation pad structure; the color film substrate comprises a second substrate, a second main spacer structure and a second auxiliary spacer structure, wherein the first auxiliary spacer structure and/or the second auxiliary spacer structure comprises a first spacer part, a second spacer part and a first connecting part; the size of the first isolation pad part along the box alignment direction and the size of the second isolation pad part along the box alignment direction are larger than the size of the first connecting part along the box alignment direction, so that the first connecting part and the first isolation pad part form a step difference with the second isolation pad part, MASK openings are formed by using a common full-color tone MASK plate according to the shapes of the first isolation pad part, the second isolation pad part and the first connecting part, and a first auxiliary isolation pad structure and/or a second auxiliary isolation pad structure are obtained, the manufacturing cost of the isolation pad structure is reduced, and the uniformity of the isolation pad structure is improved.

Description

Display panel, preparation method thereof and display device

Technical Field

The invention belongs to the technical field of display, and particularly relates to a display panel, a preparation method thereof and a display device.

Background

The liquid crystal display (Liquid Crystal Display, LCD) of the existing high-end product generally includes an array substrate and a color film substrate formed by a pair of boxes, and liquid crystal distributed between the array substrate and the color film substrate, wherein a plurality of columnar spacers (PS) for supporting the array substrate and the color film substrate are also distributed between the array substrate and the color film substrate, and the liquid crystal is located in a space supported by the columnar PS.

In general, in order to optimize brightness non-uniformity and strength of an LCD caused by PS, an XPS design method is adopted, a layer of PS is formed on each of an array substrate and a color film substrate, and PS on the two substrates are disposed in a crisscross arrangement. When PS is manufactured, the effect of heat expansion and cold contraction of liquid crystal is required to be considered, the phenomenon of uneven gravity Mura occurs in volume expansion at high temperature, the phenomenon of Bubble occurs in volume contraction at low temperature, and meanwhile, the influence of the thickness of each film and the PS precision in the manufacturing process is also required to be considered, and a range for ensuring the normal display of the LCD is required to be designed, and is generally realized through multistage PS design. I.e. the PS is arranged in two or three segments.

In the related art, the step difference is that the halftone mask is used to prepare the main PS and the auxiliary PS with step difference, that is, one or more semi-transparent films are added on the common full-tone mask, and the two or more PS heights are realized by adjusting the transmittance of the semi-transparent films. However, the halftone mask is expensive, which is more than one time of the common full-tone mask, the cost is high, and the PS uniformity obtained by the corresponding preparation mode of the halftone mask is poor, so that the LCD is easy to display abnormal phenomenon.

Disclosure of Invention

The invention mainly aims to provide a display panel, a preparation method thereof and a display device, and aims to solve the problem that in the prior art, the phenomenon of abnormal display of an LCD is easy to occur due to poor uniformity of obtained PS (polystyrene) by utilizing a preparation mode corresponding to a half-tone mask plate.

In view of the above problems, the present invention provides a display panel, including an array substrate and a color film substrate formed by butt-molding;

the array substrate includes: the first substrate comprises a first substrate body, wherein a first main isolation pad structure and a first auxiliary isolation pad structure are formed on the first substrate body;

the color film substrate comprises: a second substrate base plate; a second main isolation pad structure and a second auxiliary isolation pad structure are formed on the second substrate base plate;

in a box-shaped state of the array substrate and the color film substrate, the first main isolation pad structure and the second main isolation pad structure are in a cross shape, and the first auxiliary isolation pad structure and the second auxiliary isolation pad structure are in a cross shape;

wherein the first auxiliary spacer structure and/or the second auxiliary spacer structure comprises a first spacer portion, a second spacer portion and a first connecting portion;

the first spacer part is connected with the second spacer part through the first connecting part, and the size of the first spacer part along the box alignment direction and the size of the second spacer part along the box alignment direction are larger than the size of the first connecting part along the box alignment direction.

Further, in the display panel described above, the first main spacer structure and/or the second main spacer structure includes a third spacer portion, a fourth spacer portion, and a second connection portion;

the third spacer part is connected with the fourth spacer part through the second connecting part, and the size of the third spacer part along the box alignment direction and the size of the fourth spacer part along the box alignment direction are larger than the size of the second connecting part along the box alignment direction;

the second connecting portion has a dimension along the direction of the box that is greater than a dimension along the direction of the box of the first connecting portion.

Further, in the display panel described above, the first spacer portion has a dimension along the direction of the box, the second spacer portion has a dimension along the direction of the box, and the third spacer portion has a dimension along the direction of the box, and the fourth spacer portion has a dimension along the direction of the box.

Further, in the display panel described above, a cross section of the first spacer portion perpendicular to the direction of the pair of cells is circular or elliptical; and/or

The section of the second spacer part perpendicular to the box aligning direction is circular or elliptical; and/or

The section of the third spacer part perpendicular to the box aligning direction is circular or elliptical; and/or

The cross section of the fourth spacer part perpendicular to the box aligning direction is round or oval.

Further, in the display panel described above, the first main spacer structure and/or the second main spacer structure may be a strip-shaped structure.

Further, in the display panel described above, the length of the first connection portion is 1 to 2 μm;

the length of the first connecting part is the distance between the first end of the first connecting part and the second end of the first connecting part;

the first end of the first connecting part is connected with the first spacer part; the second end of the first connecting part is connected with the second spacer part.

Further, in the above display panel, in a box-like state of the array substrate and the color film substrate, the first main spacer structure and the second main spacer structure are vertically crossed, and the first auxiliary spacer structure and the second auxiliary spacer structure are vertically crossed.

The invention also provides a preparation method of the display panel, which comprises the following steps:

forming an array substrate, the forming the array substrate comprising: forming a first main spacer structure and a first auxiliary spacer structure on a first substrate;

forming a color film substrate, wherein the forming of the color film substrate comprises: forming a second main spacer structure and a second auxiliary spacer structure on a second substrate;

in the box-shaped state of the array substrate and the color film substrate, the first main isolation pad structure and the second main isolation pad structure are in a cross shape, and the first auxiliary isolation pad structure and the second auxiliary isolation pad structure are in a cross shape;

forming a first spacer portion, a second spacer portion and a first connection portion when forming the first auxiliary spacer structure and/or the second auxiliary spacer structure;

The invention also provides a display device comprising the display panel.

One or more embodiments of the above-described solution may have the following advantages or benefits compared to the prior art:

according to the display panel, the first main spacer structure and the first auxiliary spacer structure are formed on the first substrate of the array substrate, the second main spacer structure and the second auxiliary spacer structure are formed on the second substrate of the color film substrate, and when the first auxiliary spacer structure and/or the second auxiliary spacer structure are formed, the first spacer structure and the second spacer structure which are lower in middle and higher in two sides are formed, the first auxiliary spacer structure and/or the second auxiliary spacer structure are made into the concave structure, the concave structures with the two sides are formed between the first connecting portion and the first spacer structure, and therefore, the step difference is formed between the first connecting portion and the first spacer structure and the second main spacer structure, which is equivalent to the step difference formed between the first connecting portion and the first main spacer structure and/or the second main spacer structure, so that the first auxiliary spacer structure and the second auxiliary spacer structure can be formed in a mode of not using half tone MASK for exposure, the cost of the first spacer structure and the second spacer structure can be reduced, and the full-color spacer structure and the full-tone spacer structure can be manufactured by using the first tone MASK and the second spacer structure or the first spacer structure.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention, without limitation to the invention. In the drawings:

FIG. 1a is a schematic diagram of a related art design of a MASK opening corresponding to PS;

FIG. 1b is a top view of the actual shape of the PS using the MASK opening of FIG. 1 a;

FIG. 1c is a front view of the actual shape of PS obtained using the MASK opening of FIG. 1a

FIG. 1d is a top view of two PS's after the array substrate and color film substrate are paired;

FIG. 2 is a schematic diagram of a display panel according to an embodiment of the invention;

FIG. 3a is a schematic diagram of a MASK opening design according to the invention;

FIG. 3b is a top view of the actual shape of the PS using the MASK opening of FIG. 3 a;

FIG. 3c is a front view of the actual shape of the PS using the MASK opening of FIG. 3 a;

FIG. 3d is a top view of two PS's after the array substrate and color film substrate are paired;

FIG. 4 is a schematic diagram of another embodiment of a display panel according to the present invention;

FIG. 5 is a schematic diagram of another embodiment of a display panel according to the present invention;

FIG. 6 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention; .

Detailed Description

The following will describe embodiments of the present invention in detail with reference to the drawings and examples, thereby solving the technical problems by applying technical means to the present invention, and realizing the technical effects can be fully understood and implemented accordingly. It should be noted that, as long as no conflict is formed, each embodiment of the present invention and each feature of each embodiment may be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

Fig. 1a is a schematic diagram of a MASK opening design scheme corresponding to PS in the related art, fig. 1b is a top view of an actual shape of PS obtained by using the MASK opening of fig. 1a, and fig. 1c is a front view of an actual shape of PS obtained by using the MASK opening of fig. 1 a. Fig. 1d is a top view of two PS after the array substrate and the color film substrate are paired. As shown in fig. 1a to 1d, the PS obtained by using the MASK opening of fig. 1a is generally in a strip structure, and to implement the level difference between the main PS and the auxiliary PS, the main PS and the auxiliary PS need to be prepared by using a halftone MASK. However, the halftone mask is expensive, which is more than one time of the common full-tone mask, the cost is high, and the PS uniformity obtained by the corresponding preparation mode of the halftone mask is poor, so that the LCD is easy to display abnormal phenomenon.

Therefore, in order to solve the technical problems, the invention provides the following technical scheme:

fig. 2 is a schematic structural diagram of an embodiment of a display panel according to the present invention, and as shown in fig. 2, the display panel of the present embodiment includes an array substrate 1 and a color film substrate 2 formed by butt-forming. The array substrate 1 includes: a first substrate 11, the first substrate 11 having a first main PS11 and a first sub PS13 formed thereon; the color film substrate 2 includes: a second substrate base plate 21; the second substrate 21 has a second main PS22 and a second sub PS23 formed thereon. In the case of the array substrate 1 and the color film substrate 2 being in a box state, the first main PS11 and the second main PS22 are in a cross shape, and the first auxiliary PS13 and the second auxiliary PS23 are in a cross shape. Specifically, the first main PS11 and the second main PS22 intersect vertically, and the first auxiliary PS13 and the second auxiliary PS23 intersect vertically.

In one embodiment, the first and second main PS11 and 22 may be prepared as a long stripe structure according to the related art method. And the first auxiliary PS13 and/or the second auxiliary PS23 includes a first spacer portion A1, a second spacer portion B1, and a first connection portion C1. The first spacer portion A1 is connected with the second spacer portion B1 through the first connecting portion C1, and the dimension of the first spacer portion A1 along the box alignment direction and the dimension of the second spacer portion B1 along the box alignment direction are both greater than the dimension of the first connecting portion C1 along the box alignment direction, so that a first auxiliary PS13 and/or a second auxiliary PS23 in a concave shape can be formed. The first connecting portion C1 and the first spacer portion A1 in the middle may form a step between the second spacer portion B1, which corresponds to a step between the first connecting portion C1 and the first main PS11 and/or the second main PS 22. The alignment direction is the direction when the array substrate 1 and the color film substrate 2 are aligned, and the array substrate 1 and the color film substrate 2 are in a vertical direction according to the placement state of fig. 2.

Specifically, when the first auxiliary PS13 and/or the second auxiliary PS23 are prepared, the first auxiliary PS13 in a strip shape may be divided into two adjacent sub-auxiliary spacer structures, where a certain distance is kept between the two adjacent sub-auxiliary spacer structures, and the length of the obtained first connection portion C1 is 1-2 μm in this embodiment; the length of the first connecting portion C1 is the distance between the first end of the first connecting portion C1 and the second end of the first connecting portion C1, the first end of the first connecting portion C1 is connected with the first spacer portion A1, and the second end of the first connecting portion C1 is connected with the second spacer portion B1. In this way, corresponding MASK openings are formed for the two sub-auxiliary spacer structures, and the exposure is performed by using a common full-tone MASK. FIG. 3a is a schematic diagram of a MASK opening design of the present invention, as shown in FIG. 3, the MASK opening may include, but is not limited to, the following shapes: two octagons and a middle rectangle.

In this embodiment, by using the MASK opening shown in fig. 3a and exposing based on a common full-tone MASK, one end of the two sub-auxiliary spacer structures, which is away from the first substrate 11, is separated from each other to form the first spacer portion A1 and the second spacer portion B1, respectively, while one end of the two sub-auxiliary spacer structures, which is away from the first substrate 11, is based on the interference principle, and the materials at one end of the two sub-auxiliary spacer structures, which is away from the first substrate 11, flow together to form the first connection portion C1, so that a step is formed between the first connection portion C1 and the first spacer portion A1 and the second spacer portion B1, which is equivalent to a step formed between the first connection portion C1 and the first main PS11 and/or the second main PS 22. After the array substrate 1 and the color film substrate 2 are aligned, the first main PS11 and the second main PS22 are in interference with each other, and the first auxiliary PS13 and the second auxiliary PS23 cannot be in interference with each other due to the presence of the first connection portion C1 therebetween, so that the first auxiliary PS13 and the second auxiliary PS23 may be in interference with each other when the display panel is pressed.

Fig. 3b is a plan view of the actual shape of PS obtained by using the MASK opening of fig. 3a, and fig. 3c is a front view of the actual shape of PS obtained by using the MASK opening of fig. 3 a. Fig. 3d is a top view of two PS after the array substrate and the color film substrate are aligned. As shown in fig. 3a to 3d, although fig. 3a is designed to be an opening of a regular shape due to fluidity and adhesiveness of PS material, the shape of PS obtained in practice does not completely coincide with the shape of the MASK opening, for example, the first connection portion C1 has a circular or oval cross section perpendicular to the direction of the case; and/or the section of the second connecting part perpendicular to the direction of the box is round or oval.

In a specific implementation process, the distance from the top end of the first connecting part C1 to the top ends of the two isolation pad parts can be controlled by adjusting the distance between octagons at two ends of the MASK opening, the thickness of a liquid crystal cell of a currently commonly used product is generally 2.9-3.2 μm, the PS section difference is required to be about 0.5 μm, the thickness of a liquid crystal cell of some products is 1.3-2.8 μm, and the PS section difference is required to be 0.2-0.5 μm. For the conventional products, when the distance between the octagons at the two ends of the MASK opening is 0.1 μm, the step difference between the first connecting portion C1 and the first spacer portion A1 and the second spacer portion B1 is about 0.5 μm, which is consistent with the actual requirement.

In the display panel of this embodiment, the first main PS11 and the first auxiliary PS13 are formed on the first substrate 11 of the array substrate 1, the second main PS22 and the second auxiliary PS23 are formed on the second substrate 21 of the color film substrate 2, and when the first auxiliary PS13 and/or the second auxiliary PS23 are formed, the first spacer portion A1 and the second spacer portion B1 having the first connection portion C1 with the lower middle height and the first spacer portion A1 with the higher heights on both sides are formed, so that the first auxiliary PS13 and/or the second auxiliary PS23 form a concave structure with the higher sides, and thus, a step difference can be formed between the first connection portion C1 and the first spacer portion A1 with the second spacer portion B1 in the middle, which is equivalent to a step difference between the first connection portion C1 and the first main PS11 and/or the second main PS22, so that the first auxiliary PS13 and the second spacer portion B23 can be formed without performing exposure by using a halftone MASK, and the first spacer portion C1 and the second spacer portion C1 are formed in a uniform manner, and the cost of forming the first spacer portion C1 and the full-color spacer portion is reduced, and the cost of the first spacer portion C1 is reduced.

Fig. 4 is a schematic structural diagram of another embodiment of the display panel according to the present invention, as shown in fig. 4, in this embodiment, the first main PS11 and/or the second main PS22 include a third spacer portion A2, a fourth spacer portion B2 and a second connection portion C2. The third spacer part A2 is connected with the fourth spacer part B2 through the second connecting part C2, and the size of the third spacer part A2 along the box alignment direction and the size of the fourth spacer part B2 along the box alignment direction are larger than the size of the second connecting part C2 along the box alignment direction; the dimension of the second connecting portion C2 along the box-aligning direction is larger than the dimension of the first connecting portion C1 along the box-aligning direction.

The specific implementation process of this embodiment is different from the embodiment shown in fig. 2 in that the first main PS11 and/or the second main PS22 are also configured in a "concave" structure, but the dimension of the second connection portion C2 in the opposite direction is greater than the dimension of the first connection portion C1 in the opposite direction, so that a step is formed between the second connection portion C2 and the first connection portion C1. The preparation process of the first main PS11 and/or the second main PS22 is referred to the above related descriptions in detail, and will not be described herein.

In a specific implementation process, the dimension of the first spacer portion A1 along the box alignment direction, the dimension of the second spacer portion B1 along the box alignment direction, the dimension of the third spacer portion A2 along the box alignment direction and the dimension of the fourth spacer portion B2 along the box alignment direction are all equal, so that each main spacer structure and each auxiliary spacer structure are exposed according to the same height, and uniformity of the spacer structures is guaranteed.

In a specific implementation process, the cross section of the third connecting part perpendicular to the box aligning direction is circular or elliptical; and/or, the cross section of the second connecting part C2 perpendicular to the direction of the opposite box is circular or elliptical.

Fig. 5 is a schematic structural diagram of another embodiment of a display panel according to the present invention, as shown in fig. 5, where the display panel is different from the embodiment shown in fig. 2 in that the PS placement manners are different. The structure of the display panel shown in fig. 5 is referred to the above related description and will not be described herein.

Based on the display panel of the above embodiment, the present invention also provides a display device including the display panel of the above embodiment.

Fig. 6 is a flowchart of an embodiment of a method for manufacturing a display panel according to the present invention, as shown in fig. 6, the method for manufacturing a display panel according to the present embodiment may include the following steps:

step 600, forming an array substrate 1, where forming the array substrate 1 includes: forming a first main PS11 and a first sub PS13 on the first substrate base plate;

step 601, forming a color film substrate 2, where forming the color film substrate 2 includes: forming a second main PS22 and a second auxiliary spacer structure on the second substrate;

in a specific implementation process, in a box-like state of the array substrate 1 and the color film substrate 2, the first main PS11 and the second main PS22 are in a cross shape, and the first auxiliary PS13 and the second auxiliary spacer structure are in a cross shape. Specifically, in a box-like state of the array substrate 1 and the color film substrate 2, the first main PS11 and the second main PS22 are vertically crossed, and the first auxiliary PS13 and the second auxiliary spacer structure are vertically crossed

In a specific implementation process, when the first auxiliary PS13 and/or the second auxiliary spacer structure is formed, a first spacer portion, a second spacer portion and a first connection portion are formed; the first spacer part is connected with the second spacer part through the first connecting part, and the size of the first spacer part along the box alignment direction and the size of the second spacer part along the box alignment direction are larger than the size of the first connecting part along the box alignment direction.

According to the manufacturing method of the display panel of the embodiment, the first main PS11 and the first auxiliary PS13 are formed on the first substrate of the array substrate 1, the second main PS22 and the second auxiliary spacer structure are formed on the second substrate of the color film substrate 2, and when the first auxiliary PS13 and/or the second auxiliary spacer structure are formed, the first spacer part and the second spacer part with the lower middle height and the higher two sides are formed, the first auxiliary PS13 and/or the second auxiliary spacer structure are made into the concave structure with the middle, the concave structure with the higher two sides is formed between the first connecting part and the first spacer part, and therefore, the section difference is formed between the first connecting part and the first main PS11 and/or the second main PS22, which is equivalent to the section difference, so that the first auxiliary PS13 and the second auxiliary spacer structure can be formed in a mode of not using a half tone MASK for exposure, but the full-color tone pad, the first spacer part, the second spacer part and the second spacer structure are made into the uniform shape according to the common tone pad, and the first spacer structure and the second spacer structure are reduced, and the cost of the first spacer part and the second spacer structure is improved.

In a specific implementation process, in the method for manufacturing a display panel of the foregoing embodiment, when the first auxiliary PS13 and/or the second auxiliary spacer structure are formed, a third spacer portion, a fourth spacer portion B2, and a second connection portion C2 may also be formed;

the third spacer part is connected with the fourth spacer part B2 through the second connecting part C2, and the size of the third spacer part along the box alignment direction and the size of the fourth spacer part B2 along the box alignment direction are larger than the size of the second connecting part C2 along the box alignment direction; the dimension of the second connecting portion C2 along the box-aligning direction is larger than the dimension of the first connecting portion along the box-aligning direction.

The preparation method of the display panel of the foregoing embodiment is used for preparing the corresponding display panel of the foregoing embodiment, and specific implementation schemes thereof can be referred to the related description of the display panel embodiment described in the foregoing embodiment, and have the beneficial effects of the corresponding display panel embodiment, which are not described herein again.

The storage medium of the present embodiment stores thereon a computer program which, when executed by a controller, implements the above-described embodiments.

It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.

It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention are disclosed above, the embodiments are only used for the convenience of understanding the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the present disclosure as defined by the appended claims.

Claims

1. The display panel is characterized by comprising an array substrate and a color film substrate which are formed by box alignment;

the first spacer part is connected with the second spacer part through the first connecting part, and the size of the first spacer part along the box alignment direction and the size of the second spacer part along the box alignment direction are larger than the size of the first connecting part along the box alignment direction;

the first main spacer structure and/or the second main spacer structure comprises a third spacer portion, a fourth spacer portion and a second connecting portion;

2. The display panel according to claim 1, wherein a dimension of the first spacer portion in the direction of the pair of cells, a dimension of the second spacer portion in the direction of the pair of cells, a dimension of the third spacer portion in the direction of the pair of cells, and a dimension of the fourth spacer portion in the direction of the pair of cells are all equal.

3. The display panel according to claim 1, wherein a cross section of the first spacer portion perpendicular to the direction of alignment is circular or elliptical; and/or

4. The display panel of claim 1, wherein the first main spacer structure and/or the second main spacer structure is a strip-like structure.

5. The display panel according to claim 1, wherein the length of the first connection portion is 1 to 2 μm;

6. The display panel of claim 1, wherein in the box-like state of the array substrate and the color film substrate, the first main spacer structure and the second main spacer structure are vertically crossed, and the first auxiliary spacer structure and the second auxiliary spacer structure are vertically crossed.

7. A method for manufacturing a display panel, comprising:

further comprises:

forming a third spacer portion, a fourth spacer portion and a second connection portion when forming the first auxiliary spacer structure and/or the second auxiliary spacer structure;

8. A display device comprising the display panel of any one of claims 1-6.