WO2019179438A1

WO2019179438A1 - Display panel, display device, and manufacturing method of display panel

Info

Publication number: WO2019179438A1
Application number: PCT/CN2019/078733
Authority: WO
Inventors: 赵剑; 李环宇; 刘金良
Original assignee: 京东方科技集团股份有限公司; 合肥鑫晟光电科技有限公司
Priority date: 2018-03-23
Filing date: 2019-03-19
Publication date: 2019-09-26
Also published as: CN108490699B; CN108490699A

Abstract

A display panel, a display device, and a manufacturing method of a display panel. The display panel comprises: a color filter substrate (201) having a display region (AA); a frame sealant (202) configured to surround the display region (AA); a barrier wall (203) positioned between the frame sealant (202) and the display region (AA), the barrier wall (203) having a compartment (206) positioned outside of the display region (AA); and a liquid crystal (204) configured to be filled in the compartment (206).

Description

Display panel, display device and display panel manufacturing method

Cross-reference to related applications

The present application is based on and claims the priority of the Chinese Patent Application No. 20181024647, filed on March 23, 2018, entitled,,,,,,,,,,,,,,, The content is taken as part of this application.

Technical field

Embodiments of the present disclosure relate to a display panel, a display device, and a method of fabricating the display panel.

Background technique

At present, the display panel usually adopts a frame sealing glue to ensure the sealing property of the display panel, and prevents external impurities and moisture from entering the inside of the display panel, thereby isolating the interference of the outside to the inside of the display panel.

Summary of the invention

Embodiments of the present disclosure provide a display panel, a display device, and a method of fabricating the display panel.

In an aspect of the disclosure, a display panel is provided, including:

a substrate having a display area;

a sealant, configured to surround the periphery of the display area;

a retaining wall between the sealant and the display area, the retaining wall being provided with a chamber outside the display area; and

A liquid crystal configured to be filled in the chamber.

In at least some embodiments, a first gap is formed between an outer sidewall of the retaining wall and an inner sidewall of the sealant, and the first gap fills the liquid crystal.

In at least some embodiments, the retaining wall includes a first sub-block wall and a second sub-retaining wall, the first sub-retaining wall is disposed on a surface of the second substrate adjacent to the first substrate, the first a second sub-retaining wall is disposed on a surface of the first substrate adjacent to the second substrate, and a top of the first sub-retaining wall and a bottom of the second sub-retaining wall are in sealing contact; At least one of the retaining wall and the second sub-retaining wall is filled with the liquid crystal.

In at least some embodiments, the top of the first sub-retaining wall includes a first recess, and a bottom of the second sub-retaining wall extends into the first recess and is sealed from a bottom surface of the first recess contact.

In at least some embodiments, a second gap is formed between a sidewall of the second sub-retaining wall and a sidewall of the first recess, and the second gap fills the liquid crystal.

In at least some embodiments, the bottom of the second sub-retaining wall includes a second groove, a top of the first sub-retaining wall extends into the second groove and is sealed from a bottom surface of the second groove contact.

In at least some embodiments, a third gap is formed between a sidewall of the first recess and a sidewall of the second recess, the third gap filling the liquid crystal.

In at least some embodiments, at least one of the top of the first sub-retaining wall and the bottom of the second sub-retaining wall is provided with a third groove, the third groove filling the liquid crystal.

In at least some embodiments, the third groove is located in a region where the top of the first sub-retaining wall and the bottom of the second sub-retaining wall contact each other.

In at least some embodiments, at least one of the top and bottom of the retaining wall includes a fourth recess, the fourth recess being filled with liquid crystal.

In another aspect of the present disclosure, a display device including the foregoing display panel is provided.

In still another aspect of the present disclosure, a method of fabricating a display panel is provided, including:

Providing a substrate having a display area;

Forming a sealant around the circumference of the display area;

Forming a retaining wall between the sealant and the display area, the retaining wall being provided with a chamber outside the display area;

A liquid crystal is filled in the chamber.

In at least some embodiments, the method further includes forming a spacer in a display region of the substrate, the spacer configured to define a plurality of pixel units; wherein the forming a spacer and the forming The retaining wall is made in the same process.

In at least some embodiments, the method further comprises: filling a liquid crystal in a display region of the substrate, the liquid crystal configured to deflect for display according to a voltage applied thereto; wherein filling in the chamber The step of liquid crystal and the step of filling the liquid crystal in the display region of the substrate are completed in the same process.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below. It is obvious that the drawings in the following description relate only to some embodiments of the present disclosure, and are not to limit the disclosure. .

1 is a schematic plan view of a display panel;

2 is a schematic plan view showing a display panel of an embodiment of the present disclosure;

3a-3d are schematic cross-sectional views of the display panel along the line A-A' of some embodiments of the present disclosure;

4a-4b are schematic cross-sectional views of the display panel along the line A-A' of other embodiments of the present disclosure;

5a to 5c are schematic cross-sectional views of the display panel along the line A-A' of still other embodiments of the present disclosure;

6a-6g are schematic cross-sectional views of the display panel along the line A-A' of still other embodiments of the present disclosure;

7a-7f are schematic cross-sectional views of the display panel along the line A-A' of still other embodiments of the present disclosure;

8a to 8d are schematic cross-sectional views of the display panel along the line A-A' of still further embodiments of the present disclosure;

9a-9b are schematic cross-sectional views of the display panel along the line A-A' of still other embodiments of the present disclosure;

10 is a schematic flow chart of a method of preparing a display panel according to an embodiment of the present disclosure;

11a to 11j are schematic flowcharts of a method of preparing a display panel according to another embodiment of the present disclosure;

12 is a schematic flow chart of a method of preparing a display panel according to still another embodiment of the present disclosure;

13 is a cross-sectional structural view showing a color filter substrate on which a retaining wall and a spacer are formed according to an embodiment of the present disclosure;

FIG. 14 is a cross-sectional structural view showing a liquid crystal substrate filled with a liquid crystal according to an embodiment of the present disclosure.

detailed description

The technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. It is apparent that the described embodiments are part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present disclosure without departing from the scope of the invention are within the scope of the disclosure.

Unless otherwise defined, technical terms or scientific terms used herein shall be taken to mean the ordinary meaning of the ordinary skill in the art to which the invention pertains. The words "first", "second" and similar terms used in the specification and claims of the present disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components. The words "including" or "comprising" or "comprises" or "comprises" or "an" Component or object. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate the relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may also change accordingly.

The current display panel ensures the airtightness of the display panel by the sealant. For example, as shown in FIG. 1, the sealant 102 is provided on the substrate 101 of the display panel, so that interference from the outside to the inside of the display panel can be isolated. However, due to the limitations of the process conditions, the sealant may cause breakage, poor coating, etc., causing foreign impurities and moisture to enter the interior of the display panel, causing blackening and peripheral spots (Mura) around the display panel, severely Affects display quality.

An embodiment of the present disclosure provides a display panel including: a substrate having a display area; a sealant, configured to surround a periphery of the display area; and a retaining wall between the sealant and the display area, The retaining wall is provided with a chamber outside the display area; and a liquid crystal configured to be filled in the chamber.

In the above display panel, the retaining wall can serve as a secondary sealing function, and the liquid crystal can fill the gap provided by the retaining wall to further seal, and has excellent sealing property, which can effectively prevent breakage or coating due to the sealant. When the external gas and impurities interfere with each other, the surrounding blackening and Mura phenomenon make the display panel uniform in thickness, strong in stability, good in picture quality, and high in display quality.

In at least some embodiments, the display panel is a liquid crystal display panel, and the substrate is, for example, an array substrate, or a color filter substrate. For example, the array substrate is a substrate on which a thin film transistor (TFT) is formed, and the color filter substrate is, for example, a substrate on which a color film layer and a black matrix are formed. Alternatively, the substrate is a color film upper array substrate (COA). It will be appreciated that the above structure is equally applicable to other types of display panels such as organic electroluminescent (OLED) display panels.

In at least some embodiments, the chamber provided by the retaining wall outside the display area is a closed chamber that includes not only the chamber formed between the retaining wall and the sealant but also the cavity formed within the retaining wall itself. room.

Referring to FIG. 2 and FIG. 3a, a display panel according to an embodiment of the present disclosure includes: an array substrate 205, a color filter substrate 201, and a sealant 202; and further includes: a retaining wall 203, wherein the retaining wall 203 is disposed on the array substrate 205 and the color filter substrate 201, and the array substrate 205 and the color filter substrate 201 in sealing contact (ie, seamless contact), and located inside the sealant 202; the inner side is disposed on The sealant 202 is adjacent to one side of the display area (as indicated by the dashed line) rather than to the side adjacent to the outside. The retaining wall 203 and the sealant 202 are disposed in such a manner as to form a closed chamber therebetween.

For example, the liquid barrier 204 is filled between the retaining wall 203 and the sealant 202, that is, liquid crystal is formed in the sealed chamber. The liquid crystal 204 filled between the retaining wall 203 and the sealant can isolate outside air from entering the interior of the display panel. Since the liquid crystal 204 is in a molten state, although the rigidity of the solid matter is lost, the fluidity of the liquid is obtained, and the intermediate state of the partial properties of the crystal and the liquid is obtained. The liquid crystal 204 of the oriented ordered fluid which is present during the conversion from solid to liquid is more stable than the pure solid or pure liquid. Therefore, the display panel can effectively prevent the phenomenon of peripheral blackening and Mura caused by the interference of the external gas and impurities on the inside of the sealant 202 due to breakage or poor coating, and the box thickness is uniform, the stability is strong, and the picture quality is good. Ok, the display quality is high.

According to an embodiment of the present disclosure, the specific material type of the sealant 202 is not particularly limited. For example, the sealant 202 may be an XN-5A sealant. As a result, materials come from a wide range of sources, are readily available, and are relatively inexpensive.

According to an embodiment of the present disclosure, the thickness of the sealant 202 (refer to p in FIG. 3a) may be 1.0 mm to 1.5 mm. In some specific embodiments of the present disclosure, the sealant 202 has a thickness of approximately 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, and 1.5 mm. Therefore, the sealant 202 has a moderate thickness and a good sealing effect.

In some embodiments of the present disclosure, the retaining wall 203 may be made of an organic insulating material or an inorganic insulating material. For example, the specific material thereof may be an acrylic copolymer. Therefore, the material source is widely available, is easy to obtain, has low cost, and has good retractability, and can make the display panel have better airtightness.

According to an embodiment of the present disclosure, the specific shape of the retaining wall 203 is not particularly limited. The retaining wall 203 can be a one-piece regular retaining wall 203, such as a vertical retaining wall 203, or a retaining wall 203 having a slope on at least one side. Alternatively, a plurality of structures may be spliced. For example, a part of the retaining wall 203 on the array substrate 205 and another part of the retaining wall 203 of the color filter substrate 201 are butted together.

The above-mentioned vertical retaining wall 203, for example, but not limited to, the cross-sectional shape of the retaining wall 203 is rectangular (see FIG. 3a for structural schematic view), parallelogram (see FIG. 3b for structural schematic view), and trapezoidal (see FIG. 3c and FIG. 3d for structural schematic view). )Wait. It is to be noted that, herein, Figs. 3a to 9b, Figs. 11a to 11d show various modifications or improvements of the sectional structure along the line A-A' in Fig. 2.

In some embodiments of the present disclosure, the above-described retaining wall having a slope means that the cross-sectional shape of the retaining wall 203 is trapezoidal. The first bottom surface of the retaining wall 203 is first formed on the color filter substrate 201 or the array substrate 205 when the retaining wall 203 is formed, and then the array substrate 205 and the color filter substrate 201 are paired. When the cross-sectional shape of the retaining wall 203 is trapezoidal, the contact area of the retaining wall 203 with the color filter substrate 201 or the array substrate 205 is large, so that the retaining wall 203 can be made stronger.

According to an embodiment of the present disclosure, the thickness of the retaining wall 203 (refer to q in FIG. 3a, it should be noted that the thickness of the retaining wall 203 herein refers to the average thickness) may be 1.0-4.5 mm. In some specific embodiments of the present disclosure, the thickness of the retaining wall 203 is 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm. Therefore, the development trend of the widescreen display of the display screen can be satisfied, and the sealing property of the array substrate 205 and the color filter substrate 201 can be ensured, and the array substrate 205 is To the supporting effect, the stability of the display panel is high, the picture quality is good, and the display quality is high.

The specific material of the liquid crystal 204 is not particularly limited, and may include, but is not limited to, a polymer liquid crystal material or the like, according to an embodiment of the present disclosure. In some embodiments of the present disclosure, the material of the liquid crystal 204 may be an ester and a biphenyl liquid crystal compound. As a result, materials are widely available, readily available, and cost-effective.

According to an embodiment of the present disclosure, the shape of the liquid crystal 204 is consistent with the chamber, and the thickness of the liquid crystal 204 (refer to r in FIG. 3a, it should be noted that the thickness of the liquid crystal 204 herein refers to the average thickness) may be It is 1.0-4.5mm. In some specific embodiments of the present disclosure, the thickness of the retaining wall 203 is 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm. Thereby, the display panel can be further sealed, and the display panel can be further provided with excellent airtightness, effectively preventing external gas and impurities from interfering with the inside, and avoiding the phenomenon of blackening and Mura in the periphery.

According to the embodiment of the present disclosure, the position at which the liquid crystal 204 is filled is not particularly limited, and the liquid crystal 204 is filled between the retaining wall 203 and the sealant 202, which may refer to the outer sidewall of the retaining wall 203. The liquid crystal is filled with the sealant 202 (see FIG. 3a to FIG. 6e for a schematic structural view), and the inside of the retaining wall 203 may be filled with liquid crystal (see FIG. 6f to FIG. 9b for a schematic structural view). In some embodiments of the present disclosure, referring to FIGS. 3a to 3d, a gap 206 is formed between the outer sidewall of the retaining wall 203 and the inner sidewall of the sealant 202, and the gap 206 is filled with the liquid crystal 204. Thereby, the display panel can have excellent airtightness, can effectively prevent external gas and impurities from interfering with the inside, avoid the phenomenon of blackening and Mura in the periphery, and has uniform box thickness, strong stability, good picture quality, and display. High quality.

According to the embodiment of the present disclosure, the number of the retaining walls 203 is not particularly limited. In some embodiments of the present disclosure, the number of the retaining walls 203 may be plural. The number of the retaining walls 203 may be two or three, for example two, in order to meet the use requirements of the widescreen of the display panel. Thereby, the display panel can be made to satisfy the development trend of the widescreen of the display panel at the same time under the condition of having excellent airtightness. For example, taking two of the retaining

walls

203, 203' as an example, referring to FIG. 4a to FIG. 4b, a gap 206' may be formed between the retaining wall 203 and the retaining wall 203', and between the retaining wall 203 and the sealant 202 The gap 206 can also be defined together. At this time, the liquid crystal 204 is filled in the gap 206' (see FIG. 4a and FIG. 4b for a schematic structural view), and the liquid crystal 204 may be filled in the gap 206 (see FIG. 4a for a schematic diagram of the structure) or may not be filled with the liquid crystal 204 (structure). The schematic diagram refers to Figure 4b). Therefore, the display panel can be made to have more excellent airtightness. Since the plurality of the retaining walls 203 are provided, the interference of external gases and impurities on the inside can be further effectively prevented, and the phenomenon of blackening and Mura in the periphery can be avoided. The box thickness is uniform, the stability is strong, the picture quality is good, and the display quality is high.

In still other embodiments of the present disclosure, referring to FIG. 5a to FIG. 5c, the retaining wall 203 includes a first sub-retaining wall 2031 and a second sub-retaining wall 2032, and the first sub-retaining wall 2031 is disposed in the color The film substrate 201 is adjacent to the surface of the array substrate 205, and the second sub-retaining wall 2032 is disposed on a surface of the array substrate 205 adjacent to the color filter substrate 201, and the top of the first sub-retaining wall 2031 The bottom of the second sub-retaining wall 2032 is in sealing contact. The area of the top of the first sub-retaining wall 2031 and the bottom of the second sub-retaining wall 2032 is not particularly limited, and a person skilled in the art can flexibly select as needed as long as the requirements are met. The bottom of the second sub-retaining wall 2032 may be equal to the area of the top of the first sub-retaining wall 2031 (see FIG. 5a for a schematic structural view), or may be smaller than the area of the top of the first sub-retaining wall 2031 (structure) Referring to FIG. 5b), the schematic diagram may also be larger than the area of the top of the first sub-retaining wall 2031 (see FIG. 5c for a schematic structural view). Thus, the first sub-retaining wall 2031 and the second sub-retaining wall 2032 abut each other, and since the first sub-retaining wall 2031 and the second sub-retaining wall 2032 are scalable, The mutual abutment of the two can make the display panel have more excellent airtightness, can further effectively prevent external gas and impurities from interfering with the inside, avoid the phenomenon of blackening and Mura in the periphery, and have uniform box thickness and strong stability. Good quality and high display quality.

According to an embodiment of the present disclosure, the liquid crystal is filled in at least one of the first sub-retaining wall and the second sub-retaining wall. For example, a chamber is formed in the first sub-retaining wall 2031 and/or the second sub-retaining wall 2032, and the liquid crystal fills the chamber.

According to the embodiment of the present disclosure, referring to FIG. 6a to FIG. 6d, the top of the first sub-retaining wall 2031 is provided with a recess 207, and the bottom of the second sub-retaining wall 2032 extends into the recess 207 and The bottom wall of the groove 207 is in sealing contact (see FIG. 6a to FIG. 6b for a schematic structural view). Further, a gap is formed between the sidewall of the second sub-retaining wall and the sidewall of the recess 207, and the gap is also filled with liquid crystal (see FIG. 6b for a schematic structural view). Thus, the liquid crystal is not only filled between the retaining wall 203 and the sealant 202, but also filled in the gap formed by the first sub-retaining wall and the second sub-retaining wall to form a double sealing effect. Thereby, the interference of external gases and impurities to the inside can be further effectively prevented, the phenomenon of peripheral blackening and Mura is avoided, the box thickness is uniform, the stability is strong, the picture quality is good, and the display quality is high.

According to the embodiment of the present disclosure, referring to FIG. 6b to FIG. 6d, the height of the top of the first sub-retaining wall 2031 on both sides of the groove 207 is not particularly limited, as long as the requirements are met, those skilled in the art can For flexible selection, for example, the height of the top of the first sub-retaining wall 2031 on both sides of the groove 207 may be the same (see FIG. 6b for a schematic structural view), and the side of the sealant 202 is adjacent to the frame. The height of the top of the first sub-retaining wall 2031 is relatively high (see FIG. 6c for a schematic structural view), and the height of the top of the first sub-retaining wall 2031 far from the side of the sealant 202 is high (see FIG. 6d). In some embodiments of the present disclosure, the heights of the tops of the first sub-retaining walls 2031 on both sides of the groove 207 are the same. Thus, the process is simple and easy to produce.

According to an embodiment of the present disclosure, further, a top portion of the first sub-retaining wall 2031 is provided with a groove 207, and a bottom of the second sub-retaining wall 2032 protrudes into the groove 207 and is opposite to the groove The bottom wall of the second sub-retaining wall 2032 is also provided with a recess 207', and the top of the first sub-retaining wall 2031 extends into the bottom of the second sub-retaining wall 2032. The groove 207 is in sealing contact with the top wall of the groove 207' at the bottom of the second sub-retaining wall 2032 (see FIG. 6e to FIG. 6g for a schematic structural view). In this embodiment, the sidewall of the recess 207 at the top of the first sub-retaining wall 2031 and the sidewall of the recess 207' at the bottom of the second sub-retaining wall 2032 can be in sealing contact. (Refer to FIG. 6e for the structural diagram), it is also possible to seal the contact (see FIG. 6f and FIG. 6g for a schematic structural view). When the side wall of the groove 207 at the top of the first sub-retaining wall 2031 is not in sealing contact with the side wall of the groove 207' of the bottom of the second sub-retaining wall 2032, the groove The accommodating chamber 210 defined by the 207 and the recess 207 ′ is filled with the liquid crystal 204 , and the gap 206 can fill the liquid crystal 204 (see FIG. 6 f for a schematic diagram) or not. (See Figure 6g for a schematic diagram of the structure). Thereby, the interference of external gases and impurities to the inside can be further effectively prevented, the phenomenon of peripheral blackening and Mura is avoided, the box thickness is uniform, the stability is strong, the picture quality is good, and the display quality is high.

According to an embodiment of the present disclosure, with reference to FIGS. 7a to 7f, at least one of the top of the first sub-retaining wall 2031 and the bottom of the second sub-retaining wall 2032 is provided with a groove, and the groove is filled in The liquid crystal 204 is filled in the region where the top of the first sub-retaining wall 2031 and the bottom of the second sub-retaining wall 2032 contact each other. The groove 208 may be disposed only on the top of the first sub-retaining wall 2031 (see FIG. 7a and FIG. 7b for a schematic structural view), or may be disposed only at the bottom of the second sub-retaining wall 2032. 208 ′ (see FIG. 7 c and 7 d for structural diagrams), the groove 208 may be disposed on the top of the first sub-retaining wall 2031, and the groove is also disposed at the bottom of the second sub-retaining wall 2032 208', the recesses 208 and 208' together define a receiving chamber 210' filled with liquid crystal 204 (see Figure 7e and 7f for a schematic structural view). At this time, in the gap 206, liquid crystal may be filled (see FIG. 7a, FIG. 7c, and FIG. 7e for a schematic structural view) or liquid crystal may not be filled (see FIG. 7b, FIG. 7d, and FIG. 7f for a schematic structural view). Thereby, the interference of external gases and impurities to the inside can be further effectively prevented, the phenomenon of peripheral blackening and Mura is avoided, the box thickness is uniform, the stability is strong, the picture quality is good, and the display quality is high.

In still other embodiments of the present disclosure, referring to FIGS. 8a to 8d, the top of the retaining wall 203 is provided with a recess 209 filled with a liquid crystal 204. While the liquid crystal 204 is filled in the groove 209, the liquid crystal 204 may be filled in the gap 206 between the retaining wall 203 and the sealant 202 (see FIG. 8a, FIG. 8c for a schematic structural view). And FIG. 8d), the liquid crystal 204 may not be filled (see FIG. 8b for a schematic structural view). Therefore, the retaining wall 203 is used to support the array substrate 205, which can make the display panel have more excellent airtightness, can further effectively prevent external gas and impurities from interfering with the inside, and avoid peripheral blackening and Mura. Phenomenon, and the box thickness is uniform, the stability is strong, the picture quality is good, and the display quality is high.

According to the embodiment of the present disclosure, the number of the grooves 209 is not particularly limited, as long as the requirements are met, those skilled in the art can flexibly select according to the need, if the concave screen is used to meet the use requirements of the display panel, the concave The number of slots 209 may be one or two, for example one. Thereby, the display panel can be made to satisfy the development trend of the widescreen of the display panel at the same time under the condition of having excellent airtightness.

According to an embodiment of the present disclosure, the specific shape of the groove 209 is not particularly limited, as long as the requirements are met, those skilled in the art can flexibly select according to needs, for example, but not limited to, the cross-sectional shape of the groove 209 is The trapezoid (see Figure 8a, 8b and 8c for a schematic structure) and the rectangle (see Figure 8d for a schematic structure). In some embodiments of the present disclosure, the cross-sectional shape of the groove 209 may be trapezoidal. Thereby, the retaining wall 203 can be made stronger and more stable. In still other embodiments of the present disclosure, referring to Figures 9a through 9b, the bottom of the retaining wall 203 is provided with a recess 209' which is filled with liquid crystal 204. While the liquid crystal 204 is filled in the recess 209', the liquid crystal 204 may be filled in the gap 206 between the retaining wall 203 and the sealant 202 (see FIG. 9a for a schematic structural view). The liquid crystal 204 may not be filled (see FIG. 9b for a schematic structural view). Therefore, the retaining wall 203 is used to support the array substrate 205, which can make the display panel have more excellent airtightness, can further effectively prevent external gas and impurities from interfering with the inside, and avoid peripheral blackening and Mura. Phenomenon, and the box thickness is uniform, the stability is strong, the picture quality is good, and the display quality is high.

In another aspect of the disclosure, the present disclosure provides a display device. According to an embodiment of the present disclosure, the display device includes the display panel described above. The display device has strong stability, good picture quality, high display quality, and all the features and advantages of the display panel described above, and will not be further described herein.

According to an embodiment of the present disclosure, the shape, configuration, preparation process, and the like of the display device are not particularly limited, and those skilled in the art can flexibly select as needed as long as the requirements are met. It can be understood by those skilled in the art that, in addition to the display panel described above, the display device has the structure of a conventional display device, for example, an OLED display device or the like can also be included, and details are not described herein again.

According to an embodiment of the present disclosure, the specific kind of the display device is not particularly limited, and includes, for example, but not limited to, an LCD display panel, an OLED display panel, a mobile phone, a tablet, a wearable device, a game machine, and the like.

As shown in FIG. 12, an embodiment of the present disclosure further provides a method for manufacturing a display panel, including:

Providing a substrate having a display area;

Forming a sealant around the circumference of the display area;

A liquid crystal is filled in the chamber.

In this embodiment, the arrangement of the substrate, the sealant, the retaining wall, and the liquid crystal, the specific structure, the material, and the like can be referred to the description in the previous embodiment, and details are not described herein again.

In some embodiments of the present disclosure, the method further includes forming a spacer in a display region of the substrate, the spacer configured to define a plurality of pixel units; wherein the forming a spacer and The forming of the retaining wall is completed in the same process.

In some embodiments of the present disclosure, the method further includes filling a liquid crystal in a display region of the substrate, the liquid crystal configured to be deflected for display according to a voltage applied thereto; wherein, in the cavity The step of filling the liquid crystal in the chamber with the step of filling the liquid crystal in the display region of the substrate is completed in the same process. Here, the same process is, for example, the same patterning process, such as a photolithography process or the like.

According to an embodiment of the present disclosure, referring to FIG. 10 and FIGS. 11a to 11j, the method includes the following steps:

S100: forming a retaining wall 203 on at least one of the color filter substrate 201 and the array substrate 205 by a photolithography method, and the structure is shown in FIGS. 11a to 11c.

According to the embodiment of the present disclosure, the position at which the retaining wall 203 is formed is not particularly limited, and includes, for example, but not limited to, forming the retaining wall 203 on the color filter substrate 201 (see FIG. 11a for a schematic structural view). The retaining wall 203 is formed on the array substrate 205 (see FIG. 11b for a schematic structural view), and the retaining wall 203 is formed on the color filter substrate 201 and the array substrate 205 (see FIG. 11c for a schematic structural view).

In some embodiments of the present disclosure, the photolithography method or the photolithography process includes: coating a photoresist on a film layer to be patterned, exposing and developing the photoresist, and etching the film layer to be patterned. Part and peel off the remaining photoresist and the like. It is to be understood that the method of fabricating the retaining wall is not limited to the photolithography method, and conventional physical or chemical film forming methods such as magnetron sputtering, plasma deposition, and the like may also be employed.

In some embodiments of the present disclosure, as shown in FIG. 13, the color filter substrate 201 includes a display area AA and a peripheral area PA surrounding the display area AA. The retaining wall 203 is formed on the color filter substrate 201, and the retaining wall 203 and the spacer 211 on the color filter substrate 201 are formed by the same process, such as a photolithography process. Although the retaining wall 203 is added to the display panel, no additional steps are added in the preparation method relative to the prior art. Thereby, the operation is simple and convenient, the process is saved, the production efficiency is improved, the cost is low, and the industrial production is easy.

According to an embodiment of the present disclosure, the cross-sectional shape of the forming retaining wall 203 may be trapezoidal (see FIG. 3c and FIG. 3d for a schematic structural view). The first bottom surface of the retaining wall 203 is first formed on the color filter substrate 201 or the array substrate 205 when the retaining wall 203 is formed, and then the array substrate 205 and the color filter substrate 201 are assembled. When the cross-sectional shape of the retaining wall 203 is trapezoidal, the contact area of the retaining wall 203 with the color filter substrate 201 or the array substrate 205 is large, so that the retaining wall 203 can be made stronger.

S200: forming a sealant 202 on at least one of the color filter substrate 201 and the array substrate 205 by a coating method. See FIG. 11d to FIG.

According to an embodiment of the present disclosure, the position at which the sealant 202 is formed is not particularly limited. For example, the frame sealant 202 may be formed on the color filter substrate 201 (see FIG. 11 d for a schematic view). Forming the sealant 202 on the array substrate 205 (see FIG. 11e for a schematic view), forming the sealant 202 on the color filter substrate 201 and the array substrate 205 (see FIG. 11f for a schematic structure) . In some embodiments of the present disclosure, the sealant 202 is formed on both the color filter substrate 201 and the array substrate 205. Thereby, the coating effect of the sealant 202 can be made better. It is to be understood that the coating method includes a physical coating method and a chemical coating method, such as plasma chemical vapor deposition, magnetron sputtering, spin coating, etc., which are not specifically limited in the present disclosure.

S300: filling the liquid crystal 204 between the chamber defined by the array substrate 205, the color filter substrate 201 and the retaining wall 203, and the retaining wall 203 and the sealant 202. Figure 11g to Figure 11i and Figure 14. As shown in FIG. 14, the chamber defined in the color filter substrate 201 is filled with a liquid crystal 212a, and the liquid crystal 212b is filled between the retaining wall 203 and the sealant 202.

According to an embodiment of the present disclosure, a liquid crystal 204 is filled between the chamber defined by the array substrate 205, the color filter substrate 201 and the retaining wall 203, and the retaining wall 203 is adjacent to the sealant 202. The specific process is not particularly limited, and those skilled in the art can flexibly select as needed as long as the requirements are met. For example, the liquid crystal can be filled by a dropping method.

According to an embodiment of the present disclosure, the step of filling the liquid crystal 204 between the retaining wall 203 and the sealant 202 and the step of filling the liquid crystal of the display panel display area are completed in the same process. Although the liquid crystal 204 between the retaining wall 203 and the sealant 202 is added in the display panel, no additional steps are added in the preparation method relative to the prior art. Thereby, the operation is simple and convenient, the process is saved, the production efficiency is improved, the cost is low, and the industrial production is easy.

According to an embodiment of the present disclosure, since the liquid crystal 204 is semi-solid and semi-liquid, in the step of performing the box processing on the color filter substrate 201 and the array substrate 205 in FIG. 11i and S400, The liquid crystal 204 does not spill.

S400: Perform the box processing on the color film substrate 201 and the array substrate 205.

According to the embodiment of the present disclosure, the specific process of performing the box processing on the array substrate 205 and the color filter substrate 201 is not particularly limited, and a person skilled in the art can flexibly select as needed, as long as the requirements are met.

The manufacturing method of the above display panel is simple, convenient, easy to implement, easy to industrialize, and the obtained retaining wall of the display panel can play a secondary sealing function, and the liquid crystal can fill the gap provided by the retaining wall to further seal The display panel has excellent airtightness, and can effectively prevent the phenomenon of peripheral blackening and Mura caused by interference of external gas and impurities to the inside due to cracking or poor coating of the sealant, and the box thickness is uniform and stable. Strong, good picture quality and high display quality.

Where specific techniques or conditions are not indicated in the examples, they are carried out according to the techniques or conditions described in the literature in the art or in accordance with the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are conventional products that can be obtained commercially.

In this article, the following points need to be explained:

(1) The drawings of the embodiments of the present disclosure relate only to the structures related to the embodiments of the present disclosure, and other structures can be referred to the general design.

(2) For the sake of clarity, in the drawings for describing embodiments of the present disclosure, the thickness of layers or regions is enlarged or reduced, that is, the drawings are not drawn to actual scales.

(3) In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain a new embodiment.

The above description is only an exemplary embodiment of the present disclosure, and is not intended to limit the scope of the disclosure. The scope of the disclosure is determined by the appended claims.

Claims

A display panel comprising:

a substrate having a display area;

a sealant, configured to surround the periphery of the display area;

a retaining wall between the sealant and the display area, the retaining wall being provided with a chamber outside the display area; and

A liquid crystal configured to be filled in the chamber.
The display panel according to claim 1, wherein a first gap is formed between an outer sidewall of the retaining wall and an inner sidewall of the sealant, and the first gap fills the liquid crystal.
The display panel according to claim 1 or 2, wherein the substrate comprises a first substrate and a second substrate disposed opposite to each other, the retaining wall comprising a first sub-wall and a second sub-retaining wall, the first sub- a retaining wall is disposed on a surface of the second substrate adjacent to the first substrate, and the second sub-retaining wall is disposed on a surface of the first substrate adjacent to the second substrate, and the first sub-block The top of the wall is in sealing contact with the bottom of the second sub-retaining wall; at least one of the first sub-retaining wall and the second sub-retaining wall is filled with the liquid crystal.
The display panel according to claim 3, wherein a top of the first sub-retaining wall includes a first groove, and a bottom of the second sub-retaining wall projects into the first groove and is opposite to the first The bottom surface of the groove is in sealing contact.
The display panel according to claim 4, wherein a second gap is formed between a sidewall of the second sub-retaining wall and a sidewall of the first recess, and the second gap fills the liquid crystal.
The display panel according to claim 5, wherein the bottom of the second sub-retaining wall comprises a second groove, the top of the first sub-retaining wall extends into the second groove and with the second The bottom surface of the groove is in sealing contact.
The display panel according to claim 6, wherein a side gap is formed between a sidewall of the first recess and a sidewall of the second recess, and the third gap fills the liquid crystal.
The display panel according to claim 3, wherein at least one of a top of the first sub-retaining wall and a bottom of the second sub-retaining wall is provided with a third groove, and the third groove is filled in Full of the liquid crystal.
The display panel according to claim 8, wherein the third groove is located in a region where the top of the first sub-retaining wall and the bottom of the second sub-retaining wall contact each other.
The display panel according to claim 1, wherein at least one of a top and a bottom of the retaining wall includes a fourth groove filled with a liquid crystal.
A display device comprising the display panel of any of claims 1-10.
A method of making a display panel, comprising:

Providing a substrate having a display area;

Forming a sealant around the circumference of the display area;

Forming a retaining wall between the sealant and the display area, the retaining wall being provided with a chamber outside the display area;

A liquid crystal is filled in the chamber.
The method according to claim 12, wherein a first gap is formed between an outer sidewall of the retaining wall and an inner sidewall of the sealant, and the first gap fills the liquid crystal.
The method according to claim 12 or 13, wherein the substrate comprises a first substrate and a second substrate disposed opposite each other, and the forming the barrier comprises:

Forming a first sub-gap wall formed on a surface of the second substrate adjacent to the first substrate, and a second sub-retaining wall formed at the first a substrate is adjacent to a surface of the second substrate, and a top of the first sub-retaining wall and a bottom of the second sub-retaining wall are in sealing contact; and the first sub-retaining wall and the second sub-retaining wall At least one of the liquid crystals is filled.
The method according to claim 14, wherein the top of the first sub-retaining wall includes a first recess, and a bottom of the second sub-retaining wall projects into the first recess and is opposite to the first recess The bottom surface of the groove is in sealing contact; a sidewall is formed between the sidewall of the second sub-retaining wall and the sidewall of the first recess, and the second gap fills the liquid crystal.
The method according to claim 15, wherein the bottom of the second sub-retaining wall includes a second recess, a top of the first sub-retaining wall projects into the second recess and is opposite to the second recess The bottom surface of the groove is in sealing contact; a third gap is formed between the sidewall of the first groove and the sidewall of the second groove, and the third gap fills the liquid crystal.
The method according to claim 13, wherein at least one of a top of the first sub-retaining wall and a bottom of the second sub-retaining wall is provided with a third groove, the third groove being filled The liquid crystal.
The method according to any one of claims 13 to 17, wherein at least one of the top and the bottom of the retaining wall comprises a fourth recess, the fourth recess being filled with liquid crystal.
A method according to any one of claims 13 to 18, further comprising:

Forming a spacer in the display area of the substrate, the spacer being configured to define a plurality of pixel units;

Wherein, forming the spacer and the forming the retaining wall are completed in the same process.
A method according to any one of claims 13 to 18, further comprising:

Filling a liquid crystal in a display region of the substrate, the liquid crystal configured to be deflected for display according to a voltage applied thereto;

Wherein, the step of filling the liquid crystal in the chamber and the step of filling the liquid crystal in the display region of the substrate are completed in the same process.