Liquid crystal panel, display device, and method for manufacturing liquid crystal panel

Abstract

A liquid crystal panel (20), a display device, and a method for manufacturing the liquid crystal panel (20). The liquid crystal panel (20) comprises a first substrate (21) and a second substrate (22) arranged opposite to each other, and a frame sealing structure (23) arranged between the first substrate (21) and the second substrate (22); the frame sealing structure (23) comprises a main body (231) and at least one liquid crystal filling opening (232); the first substrate (21), the second substrate (22), and the frame sealing structure (23) form a liquid crystal cell; the frame sealing structure (23) extends around the periphery of the liquid crystal cell; the liquid crystal filling opening (232) penetrates through the main body (231) of the frame sealing structure (23); the liquid crystal filling opening (232) is configured to allow for the flow of a liquid crystal with which the liquid crystal cell is filled during a liquid crystal filling stage; and the length (L) of the liquid crystal filling opening (232) on a liquid crystal flow cross section is less than or equal to 0.8 mm.

Description

LCD panel, display device and method for manufacturing LCD panel

[0001] This application claims priority to Chinese Patent Application No. 202421387407.X, filed on June 18, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] At least one embodiment of this disclosure relates to a liquid crystal panel, a display device, and a method for manufacturing a liquid crystal panel. Background Technology

[0003] Currently, LCD monitors are widely used in daily life. In particular, LCD monitors with narrow bezels are receiving increasing attention due to their many advantages, such as reducing visual interference from screen edges and saving space by reducing the overall size of the monitor. Summary of the Invention

[0004] At least one embodiment of this disclosure provides a liquid crystal panel, a display device, and a method for manufacturing a liquid crystal panel, to control the speed of liquid crystal filling during the liquid crystal filling process of manufacturing the liquid crystal panel, and to prevent the risk of air bubbles being generated during the liquid crystal filling process and the risk of sealant overflowing after liquid crystal filling.

[0005] At least one embodiment of this disclosure provides a liquid crystal panel, the liquid crystal panel including a first substrate, a second substrate disposed opposite to each other, and a frame structure disposed between the first substrate and the second substrate. The frame structure includes a main body and at least one liquid crystal filling opening, and the first substrate, the second substrate, and the frame structure form a liquid crystal cell. The frame structure extends around the periphery of the liquid crystal cell, the liquid crystal filling opening penetrates through the main body of the frame structure, and the liquid crystal filling opening is configured to allow liquid crystal to flow into the liquid crystal cell during the liquid crystal filling stage. The length of the liquid crystal filling opening in the liquid crystal flow cross section is less than or equal to 0.8 mm.

[0006] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the length of the liquid crystal injection opening in the liquid crystal flow cross section is greater than or equal to 0.3 mm.

[0007] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the main body of the frame structure protrudes outward from the liquid crystal cell at the liquid crystal injection opening such that the size of the liquid crystal flow channel at the liquid crystal injection opening is larger than the size of the main body in the direction perpendicular to its extension.

[0008] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the sealing frame structure further includes a sealing member configured to seal the liquid crystal filling opening, so that the liquid crystal cell is a sealed cell.

[0009] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the size of the liquid crystal cell is from 1 inch to 17 inches.

[0010] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the thickness of the liquid crystal cell ranges from greater than or equal to 3 micrometers to less than or equal to 60 micrometers.

[0011] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the size of the liquid crystal cell is 1 inch to 6 inches, and the number of liquid crystal injection openings is one.

[0012] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the size of the liquid crystal cell is 6 inches to 17 inches, and the number of liquid crystal filling openings is multiple.

[0013] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, a plurality of liquid crystal filling openings are uniformly distributed on one side of the liquid crystal cell.

[0014] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the liquid crystal injection opening is configured to allow liquid crystal to pass through at its maximum flow cross-section.

[0015] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, no obstruction is provided on the path through which liquid crystal is injected from the liquid crystal injection opening into the liquid crystal cell.

[0016] For example, in a liquid crystal panel provided according to at least one embodiment of the present disclosure, the material of the main body of the frame structure is a frame adhesive.

[0017] At least one embodiment of this disclosure provides a display device. The display device includes the liquid crystal panel described above.

[0018] At least one embodiment of this disclosure provides a method for manufacturing a liquid crystal panel. The method includes: fabricating a first substrate and a second substrate; coating the first substrate or the second substrate with a sealant and assembling the second substrate with the first substrate to form a sealant structure and a liquid crystal cell; and filling the liquid crystal cell with liquid crystal through a liquid crystal infusion opening to form a liquid crystal panel. The sealant structure includes a main body and at least one liquid crystal infusion opening, each of the at least one liquid crystal infusion opening penetrating the main body of the sealant structure, and the length of the liquid crystal infusion opening in the liquid crystal flow cross-section is less than or equal to 0.8 mm.

[0019] For example, according to at least one embodiment of the method provided in this disclosure, the length of the liquid crystal filling opening in the liquid crystal flow section is greater than or equal to 0.3 mm.

[0020] For example, according to a method provided in at least one embodiment of the present disclosure, the main body of the sealing frame structure protrudes outward from the liquid crystal cell at the liquid crystal filling opening such that the size of the liquid crystal flow channel at the liquid crystal filling opening is larger than the size of the main body in the direction perpendicular to its extension.

[0021] For example, according to at least one embodiment of the method provided in this disclosure, the size of the liquid crystal cell is from 1 inch to 17 inches.

[0022] For example, according to at least one embodiment of the method provided in this disclosure, the thickness of the liquid crystal cell is greater than or equal to 3 micrometers and less than or equal to 60 micrometers.

[0023] For example, according to at least one embodiment of the present disclosure, the thickness of the liquid crystal cell is greater than or equal to 3 micrometers and less than or equal to 30 micrometers, and coating the sealing adhesive on the first substrate or the second substrate includes: coating the sealing adhesive using a screen printing process.

[0024] For example, according to at least one embodiment of the present disclosure, the thickness of the liquid crystal cell is greater than 30 micrometers and less than or equal to 60 micrometers, and coating the sealing adhesive on the first substrate or the second substrate includes: applying the sealing adhesive using a dispensing process.

[0025] For example, according to a method provided in at least one embodiment of this disclosure, the liquid crystal injection opening is configured to allow liquid crystal to pass through at its maximum flow cross-section.

[0026] For example, according to at least one embodiment of the present disclosure, no obstruction is provided on the path through which liquid crystal is injected from the liquid crystal injection opening into the liquid crystal cell.

[0027] For example, according to at least one embodiment of the present disclosure, the method further includes sealing the liquid crystal filling opening with a sealing adhesive and curing the sealing adhesive to form a sealant that seals the liquid crystal filling opening. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0029] Figure 1 is a top view of the sealant of the LCD panel, the opening in the sealant, and the blocking component.

[0030] Figure 2 is a cross-sectional schematic diagram of a liquid crystal panel according to an embodiment of the present disclosure;

[0031] Figure 3 is a top view of the main body and the opening through the main body of the enclosure structure of the liquid crystal panel according to an embodiment of the present disclosure;

[0032] Figure 4 is a cross-sectional schematic diagram of a liquid crystal panel at the frame structure according to an embodiment of the present disclosure;

[0033] Figure 5 is a top view schematic diagram of the enclosure structure of a liquid crystal panel according to an embodiment of the present disclosure;

[0034] Figure 6 is a cross-sectional schematic diagram of a liquid crystal panel at the frame structure according to an embodiment of the present disclosure;

[0035] Figure 7 is a top view of a liquid crystal panel according to an embodiment of the present disclosure;

[0036] Figure 8 is a flowchart of a method for manufacturing a liquid crystal panel according to an embodiment of the present disclosure; and

[0037] Figures 9 to 11 are schematic diagrams illustrating the manufacturing process of a liquid crystal panel according to embodiments of the present disclosure. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0039] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0040] Figure 1 is a top view of the sealant, openings in the sealant, and blocking components of the liquid crystal panel. Figure 1 shows the structure of the liquid crystal panel during the liquid crystal filling stage.

[0041] As shown in Figure 1, the inventors of this disclosure have discovered that the sealant for liquid crystal panels ranging in size from 1 inch to 17 inches is provided with a barrier 12, which is offset from the inner edge of the sealant 11, i.e., it is located at the liquid crystal filling opening 13 of the sealant 11, thereby slowing down the liquid crystal filling speed of filling the liquid crystal cell during the liquid crystal filling stage of the liquid crystal panel manufacturing process. However, this hinders the manufacture of liquid crystal panels with narrow bezels because it is difficult to control the size of the barrier 12 using dispensing methods, and the length L0 of the liquid crystal filling opening 13 is 1.0 mm to 3.0 mm, which is relatively large. This length L0 can generate air bubbles during the liquid crystal filling process and poses a risk of sealant overflow after liquid crystal filling.

[0042] Embodiments of this disclosure provide a liquid crystal panel and a display device. The length of at least one liquid crystal filling opening in the frame structure of the liquid crystal panel in the liquid crystal flow cross-section is less than or equal to 0.8 mm.

[0043] Figure 2 is a cross-sectional schematic diagram of a liquid crystal panel according to an embodiment of the present disclosure; Figure 3 is a top view schematic diagram of the main body and the opening through the main body of the enclosure structure of the liquid crystal panel according to an embodiment of the present disclosure; Figure 4 is a cross-sectional schematic diagram of the liquid crystal panel at the enclosure structure according to an embodiment of the present disclosure. Figure 3 shows the structure of the liquid crystal panel during the liquid crystal filling stage.

[0044] As shown in Figures 2 to 4, for example, a liquid crystal panel 20 includes a first substrate 21, a second substrate 22 disposed opposite to each other, and a frame structure 23 disposed between the first substrate 21 and the second substrate 22. The frame structure 23 includes a body 231 and at least one liquid crystal filling opening 232. The frame structure 23 is annular. The first substrate 21, the second substrate 22, and the frame structure 23 form a liquid crystal cell. The liquid crystal filling opening 232 penetrates the body 231 of the frame structure 23. The liquid crystal filling opening 232 is configured to allow liquid crystal to flow into the liquid crystal cell during the liquid crystal filling stage. The length L of the liquid crystal filling opening 232 in the liquid crystal flow cross section is less than or equal to 0.8 mm.

[0045] In some embodiments, the enclosure structure 23 is in the form of a closed loop surrounding the liquid crystal cell. Although described as "ring-shaped" in some embodiments, the enclosure structure 23 is not limited to a circular ring and can have various geometries, including but not limited to rectangles (as shown in Figures 3, 5, and 7), squares, ellipses, or other polygons, depending on the desired shape of the liquid crystal panel. The shape of the enclosure structure 23 generally corresponds to the peripheral shape of the liquid crystal cell it encloses. For example, as shown in Figures 3 and 5, the enclosure structure 23 has a rectangular shape forming the perimeter of a rectangular liquid crystal cell. Regardless of its specific geometry, the enclosure structure 23 is configured to enclose liquid crystal within a liquid crystal cell formed between the first substrate 21 and the second substrate 22.

[0046] According to embodiments of this disclosure, since the length of the liquid crystal filling opening of the liquid crystal cell of the liquid crystal panel in the liquid crystal flow section is less than or equal to 0.8 mm, the filling speed of the liquid crystal can be controlled during the liquid crystal filling process of manufacturing the liquid crystal panel, and the risk of generating liquid crystal filling bubbles and overflowing sealing glue after liquid crystal filling can be prevented.

[0047] The liquid crystal flow cross-section of the liquid crystal filling opening 232 refers to the cross-section of the liquid crystal filling opening 232 that allows liquid crystal to flow during the liquid crystal filling stage. This liquid crystal flow cross-section is present whenever the liquid crystal filling opening 232 is provided, and is not limited to being referred to as such during the liquid crystal filling stage. The dimension of the liquid crystal filling opening 232 in the direction perpendicular to the liquid crystal flow cross-section is the depth of the liquid crystal filling opening 232.

[0048] In some embodiments, as shown in FIG3, the length L of the liquid crystal filling opening 232 in the liquid crystal flow cross section refers to the length of the liquid crystal filling opening 232 in the extending direction (e.g., direction X) of the side of the liquid crystal filling opening 232 on which the liquid crystal filling opening 232 is disposed. The length L of the liquid crystal filling opening 232 in the liquid crystal flow cross section shown in FIG3 is the dimension of the liquid crystal filling opening 232 in the direction X.

[0049] For example, the length of the liquid crystal filling opening 232 refers to its length L in the direction of extension of the side of the liquid crystal panel 20 where the liquid crystal filling opening 232 is disposed, parallel to the main surface of the first substrate 21. The main surface of the first substrate 21 is, for example, the plane in the top view shown in FIG3, that is, the plane in the X and Y directions.

[0050] For example, as shown in Figures 3 and 4, the size (length L) of the orthographic projection of the liquid crystal injection opening 232 on the first substrate 21 is less than or equal to 0.8 mm.

[0051] For example, as shown in Figures 3 and 4, the size (length L) of the orthographic projection of the liquid crystal injection opening 232 on the second substrate 22 is less than or equal to 0.8 mm.

[0052] Figure 4 shows the length L and width W of the liquid crystal filling opening 232. Figure 4 illustrates the liquid crystal filling opening 232 as a rectangle. Of course, the shape of the liquid crystal filling opening 232 is not limited to that shown in Figure 4.

[0053] In some embodiments, as shown in FIG3, in order to facilitate liquid crystal filling, the length L of the liquid crystal filling opening 232 on the liquid crystal flow cross section is greater than or equal to 0.3 mm.

[0054] According to embodiments of this disclosure, since the length of the liquid crystal filling opening of the liquid crystal cell of the liquid crystal panel in the liquid crystal flow section is greater than or equal to 0.3 mm, the filling speed of the liquid crystal can be prevented from being too slow during the liquid crystal filling process of manufacturing the liquid crystal panel.

[0055] In some embodiments, in order to balance the liquid crystal filling speed, avoid the generation of air bubbles, and reduce the risk of sealant overflow, the size of the liquid crystal filling opening 232 can range from 0.3 mm to 0.8 mm.

[0056] In some embodiments, as shown in FIG3, the main body 231 of the sealing frame structure 23 protrudes outward from the liquid crystal cell at the liquid crystal filling opening 232, so that the size of the liquid crystal flow channel at the liquid crystal filling opening 232 is larger than the size of the main body 231 in the direction perpendicular to its extension.

[0057] For example, as shown in Figure 3, the dimension T of the liquid crystal filling opening 232 along the Y direction is greater than the length t of the main body 231 of the sealing frame structure along the Y direction. For example, in some embodiments, the dimension T is greater than or equal to 2 mm.

[0058] According to the embodiments of this disclosure, since the liquid crystal filling opening 232 protrudes outward from the liquid crystal cell, the size of the liquid crystal flow channel in the Y direction at the liquid crystal filling opening 232 is larger than the size of the main body in the Y direction. This ensures that the liquid crystal is smoothly filled into the liquid crystal cell during the liquid crystal filling stage, reduces leakage, facilitates liquid crystal filling, and thus improves production efficiency and yield.

[0059] Figure 5 is a top view of the frame structure of a liquid crystal panel according to an embodiment of the present disclosure, and Figure 6 is a cross-sectional view of the liquid crystal panel at the frame structure according to an embodiment of the present disclosure.

[0060] In some embodiments, as shown in FIG5, the sealing frame structure 23 further includes a sealing member 233 configured to seal the liquid crystal filling opening 232, so that the liquid crystal cell is a sealed cell. FIG5 shows a sealed cavity 66. A liquid crystal (not shown) is disposed within the sealed cavity 66. As shown in FIGS. 5 and 6, the sealed cavity 66 is surrounded by a first substrate 21, a second substrate 22, and a sealing frame structure 23 located therebetween. A cross-section of the liquid crystal panel at the sealed cavity can be seen in FIG2.

[0061] Figures 5 and 6 show the structure of the liquid crystal panel after the liquid crystal filling opening 232 is sealed by the sealing member 233.

[0062] In some embodiments, the orthographic projection of the frame structure on the main surface illustrated in FIG5 is a rectangle, but this disclosure is not limited thereto. The orthographic projection of the frame structure on the main surface can also be other shapes, such as a circle.

[0063] In some embodiments, the material of the seal 233 is a UV-curable adhesive.

[0064] In some embodiments, the sealant 233 may be formed by sealing the liquid crystal filling opening 232 after filling the liquid crystal cell with liquid crystal during the manufacturing process of the liquid crystal panel. Due to the size of the liquid crystal filling opening in the embodiments of this disclosure, it is possible to prevent the sealant, such as sealing adhesive, from overflowing.

[0065] In some embodiments, the material of the seal 233 may also be other thermosetting adhesives, which are not limited in this disclosure.

[0066] In some embodiments, the thickness of the liquid crystal cell ranges from greater than or equal to 3 micrometers to less than or equal to 60 micrometers. For example, the thickness of the liquid crystal cell refers to its height in the direction perpendicular to the main surface of the first substrate. Figure 2 illustrates the thickness TK of the liquid crystal cell.

[0067] Figure 7 is a top view of a liquid crystal panel according to an embodiment of the present disclosure.

[0068] In some embodiments, the size of the liquid crystal cell is from 1 inch to 17 inches. Here, as shown in Figure 7, the size of the liquid crystal cell refers to the diagonal length S of the display area of ​​the liquid crystal panel displaying the image.

[0069] In some embodiments, the size of the liquid crystal cell is 1 inch to 6 inches, and the number of liquid crystal filling openings 232 is one (not shown in the figure).

[0070] In some embodiments, the size of the liquid crystal cell is 6 inches to 17 inches, and the number of liquid crystal filling openings 232 is multiple.

[0071] In some embodiments, as shown in Figures 3-6, the number of liquid crystal injection openings is three. In this embodiment, the number of liquid crystal injection openings is not limited; any number of liquid crystal injection openings can be manufactured according to actual needs.

[0072] In some embodiments, as shown in Figures 3-6, a plurality of liquid crystal injection openings 232 are evenly distributed on one side of the liquid crystal cell.

[0073] According to embodiments of this disclosure, by uniformly distributing multiple liquid crystal filling openings on one side of the liquid crystal cell, it can be ensured that the liquid crystal is uniformly filled into the liquid crystal cell during the liquid crystal filling process, thereby reducing process time and improving product yield.

[0074] In some embodiments, as shown in FIG3, the liquid crystal filling opening 232 is configured to allow liquid crystal to pass through at its maximum flow cross-section. That is, during the liquid crystal filling process, the cross-sectional area of ​​the liquid crystal passing through the filling opening is the maximum flow area of ​​the filling opening, and the liquid crystal filling opening 232 is not blocked.

[0075] In some embodiments, as shown in FIG3, no obstruction is provided on the path for filling liquid crystal into the liquid crystal cell from the liquid crystal filling opening 232.

[0076] According to embodiments of this disclosure, since the liquid crystal cell is not provided with a blocking element for slowing down the liquid crystal filling speed during the liquid crystal filling stage, the liquid crystal panel including the liquid crystal cell can have a narrow bezel, for example, the width of the narrow bezel on the main surface can be as narrow as 1.5 mm.

[0077] In some embodiments, the main body of the sealing structure is made of sealing adhesive. For example, the sealing adhesive may be a UV-curable adhesive or other thermosetting adhesive.

[0078] Figure 8 is a flowchart of a method for manufacturing a liquid crystal panel according to an embodiment of the present disclosure, and Figures 9 to 11 show schematic diagrams of the manufacturing process of a liquid crystal panel according to an embodiment of the present disclosure.

[0079] As shown in Figures 8-11, embodiments of this disclosure provide a method for manufacturing a liquid crystal panel, including:

[0080] S1. Fabricate a first substrate 21 and a second substrate 22, as shown in Figure 9. The first substrate can be a glass substrate, and the second substrate 22 can also be a glass substrate.

[0081] S2. Apply sealant 24 to the first substrate 21 or the second substrate 22 and assemble the second substrate with the first substrate to form a seal structure 23 and a liquid crystal cell, as shown in Figures 10 and 11.

[0082] Referring back to Figure 3, as shown in Figure 3, the fabricated sealing frame structure 23 includes a main body 231 and at least one liquid crystal filling opening 232. The liquid crystal filling opening 232 penetrates the main body 231 of the sealing frame structure, and the length L of the liquid crystal filling opening 232 on the liquid crystal flow cross section is less than or equal to 0.8 mm.

[0083] S3. Liquid crystal (not shown in the figure) is filled into the liquid crystal cell through the liquid crystal filling opening 232 to form a liquid crystal panel.

[0084] In some embodiments, as shown in FIG3, the length L of the liquid crystal injection opening 232 on the liquid crystal flow cross section is greater than or equal to 0.3 mm.

[0085] In some embodiments, as shown in FIG3, the main body 231 of the frame structure 23 protrudes outward from the liquid crystal cell at the liquid crystal filling opening 232 such that the size T of the liquid crystal flow channel at the liquid crystal filling opening 232 is greater than the size t of the main body 231 in the direction perpendicular to its extension.

[0086] In some embodiments, the size of the liquid crystal cell is from 1 inch to 17 inches. The size of the liquid crystal cell refers to the diagonal length of the display area of ​​the liquid crystal panel where the image is displayed.

[0087] In some embodiments, as shown in FIG4, the thickness of the liquid crystal cell is greater than or equal to 3 micrometers and less than or equal to 60 micrometers, that is, the width W of the liquid crystal filling opening 232 in the direction (direction Z) perpendicular to the first substrate 21 is greater than or equal to 3 micrometers and less than or equal to 60 micrometers.

[0088] In some embodiments, if the thickness of the liquid crystal cell is greater than or equal to 3 micrometers and less than or equal to 30 micrometers, then a screen printing process is used to coat the sealing adhesive on the first substrate or the second substrate.

[0089] In some embodiments, if the thickness of the liquid crystal cell is greater than 30 micrometers and less than or equal to 60 micrometers, then a sealing adhesive is applied to the first substrate or the second substrate using a dispensing process.

[0090] In some embodiments, the liquid crystal filling opening 232 is configured to allow liquid crystal to pass through at its maximum flow cross-section. That is, during the liquid crystal filling process, the cross-sectional area of ​​the liquid crystal passing through the liquid crystal filling opening is the maximum flow area of ​​the liquid crystal filling opening, and the liquid crystal filling opening 232 is not blocked.

[0091] In some embodiments, no obstruction is provided on the path through which liquid crystal is injected into the liquid crystal cell from the liquid crystal injection opening 232.

[0092] According to embodiments of this disclosure, since no obstruction for slowing down the liquid crystal filling speed is provided in the liquid crystal cell of the liquid crystal panel, the sealing adhesive can be applied using either screen printing or dispensing processes, making the manufacturing method more flexible.

[0093] In some embodiments, after assembling the first substrate and the second substrate into a cell, hot pressing and cutting are performed to form a liquid crystal cell.

[0094] In some embodiments, the liquid crystal filling process in step S3 includes: using a vacuum pump to evacuate the sealed cavity of the liquid crystal cell placed in a vacuum environment, which is formed by a first substrate, a second substrate and a sealing frame structure located therebetween, so that the sealed cavity forms a high vacuum state, and the vacuum pressure of the vacuum pump can be 1 Pa to 5 Pa; injecting liquid crystal from the liquid crystal injection opening into the sealed cavity until the entire display unit is filled, the liquid crystal filling time can be 60 minutes to 200 minutes, and the liquid crystal filling balancing time can be 30 minutes to 200 minutes; after the injection is completed, nitrogen gas is introduced to break the vacuum, and atmospheric pressure is used to assist in liquid crystal filling, the vacuum breaking time can be 60 minutes to 200 minutes.

[0095] In some embodiments, after liquid crystal filling, the method provided in this disclosure further includes sealing the liquid crystal filling opening 232 with a sealing adhesive and curing the sealing adhesive to form a sealing element (not shown in the figure) of the frame structure. The sealing adhesive can be a UV-curable adhesive or other thermosetting adhesive. The material of the sealing element can be the same as or different from the material of the main body of the frame structure.

[0096] In some embodiments, the LCD panel can be cleaned after sealing and curing.

[0097] For example, an electrode made of indium tin oxide and an alignment layer made of polyimide can be disposed on the first substrate 21, and an electrode made of indium tin oxide and an alignment layer made of polyimide can be disposed on the second substrate 22.

[0098] This disclosure also provides a display device. The display device includes a liquid crystal panel as described in any of the above embodiments.

[0099] For example, the display device can be any product or component with a display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator, which includes an LCD panel.

[0100] For example, the first substrate of the liquid crystal panel can be an array substrate, the second substrate of the liquid crystal panel can be a color filter substrate, or one of the first substrate or the second substrate of the liquid crystal panel can be both an array substrate and a color filter substrate.

[0101] The plan view of this disclosure shows direction X and direction Y, and the cross-sectional view shows direction Z. Direction X and direction Y intersect; for example, direction X and direction Y are perpendicular. Direction Z is perpendicular to direction X and perpendicular to direction Y. Direction Z is the setting direction of the first substrate 21 and the second substrate 22. That is, the first substrate 21 and the second substrate 22 are set along direction Z. Direction X and direction Y are two intersecting directions in a plane perpendicular to direction Z.

[0102] The following points need to be explained:

[0103] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure, and other structures can be referred to the general design.

[0104] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure may be combined with each other.

[0105] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A liquid crystal panel, comprising a first substrate, a second substrate arranged oppositely, and a seal structure arranged between the first substrate and the second substrate, wherein, The frame structure comprises a main body and at least one liquid crystal filling opening, and the first substrate, the second substrate, and the frame structure form a liquid crystal cell, wherein the frame structure extends around the periphery of the liquid crystal cell, the liquid crystal filling opening penetrates the main body of the frame structure, each of the at least one liquid crystal filling opening is configured to flow liquid crystal filled in the liquid crystal cell in a liquid crystal filling stage, and the length of the liquid crystal filling opening in a liquid crystal flow cross section is less than or equal to 0.8 mm.

2. The liquid crystal panel according to claim 1, wherein, The length of the liquid crystal filling opening in the liquid crystal flow cross section is greater than or equal to 0.3 mm.

3. The liquid crystal panel according to claim 1 or 2, wherein The main body of the frame structure protrudes outwardly from the liquid crystal cell at the liquid crystal filling opening, so that the size of the liquid crystal flow channel at the liquid crystal filling opening is greater than the size of the main body in the direction perpendicular to the extension direction thereof.

4. The liquid crystal panel according to any one of claims 1 to 3, wherein, The frame structure further comprises a seal configured to seal the liquid crystal filling opening, so that the liquid crystal cell is a sealed cell.

5. The liquid crystal panel according to claim 4, wherein, The material of the seal is UV curing glue.

6. The liquid crystal panel according to any one of claims 1 to 5, wherein, The size of the liquid crystal cell is 1 inch to 17 inches.

7. The liquid crystal panel according to any one of claims 1 to 5, wherein, The thickness of the liquid crystal cell ranges from greater than or equal to 3 microns to less than or equal to 60 microns.

8. The liquid crystal panel according to any one of claims 1 to 5, wherein, The size of the liquid crystal cell is 1 inch to 6 inches, and the number of the liquid crystal filling openings is one.

9. The liquid crystal panel according to any one of claims 1 to 5, wherein, The size of the liquid crystal cell is 6 inches to 17 inches, and the number of the liquid crystal filling openings is multiple.

10. The liquid crystal panel of claim 9, wherein, Multiple liquid crystal filling openings are uniformly distributed on one side of the liquid crystal cell.

11. The liquid crystal panel according to any one of claims 1 to 10, wherein, The liquid crystal filling opening is configured to pass through the liquid crystal with its maximum flow cross section.

12. The liquid crystal panel according to any one of claims 1 to 11, wherein, No blocking member is arranged on the path of filling the liquid crystal from the liquid crystal filling opening to the liquid crystal cell.

13. The liquid crystal panel according to any one of claims 1 to 12, wherein, The material of the main body of the frame structure is frame glue.

14. A display device comprising the liquid crystal panel of any one of claims 1-13.

15. A method for manufacturing a liquid crystal panel, comprising: manufacturing a first substrate and a second substrate, applying frame glue on the first substrate or the second substrate and assembling the second substrate with the first substrate to form a frame structure and a liquid crystal cell, wherein the frame structure comprises a main body and at least one liquid crystal filling opening, each of the at least one liquid crystal filling opening penetrates the main body of the frame structure, the length of the liquid crystal filling opening in a liquid crystal flow cross section is less than or equal to 0.8 mm, and filling the liquid crystal into the liquid crystal cell through the liquid crystal filling opening to form a liquid crystal panel.

16. The method of claim 15, wherein, The length of the liquid crystal filling opening in the liquid crystal flow cross section is greater than or equal to 0.3 mm.

17. The method of claim 15 or 16, wherein, The main body of the frame structure protrudes outwardly from the liquid crystal cell at the liquid crystal filling opening, so that the size of the liquid crystal flow channel at the liquid crystal filling opening is greater than the size of the main body in the direction perpendicular to the extension direction thereof.

18. The method of any one of claims 15-17, wherein, The size of the liquid crystal cell is 1 inch to 17 inches.

19. The method of claim 18, wherein, The thickness of the liquid crystal cell ranges from greater than or equal to 3 microns to less than or equal to 60 microns.

20. The method of any one of claims 15-19, wherein, The thickness of the liquid crystal cell is in a range of greater than or equal to 3 microns and less than or equal to 30 microns, and coating the sealant on the first substrate or the second substrate comprises coating the sealant using a screen printing process.

21. The method of any one of claims 15-19, wherein, The thickness of the liquid crystal cell is in a range of greater than 30 microns and less than or equal to 60 microns, and coating the sealant on the first substrate or the second substrate comprises coating the sealant using a dispensing process.

22. The method of any one of claims 15-21, wherein, The liquid crystal infusion opening is configured to pass liquid crystal through its largest flow cross-section.

23. The method of any one of claims 15-22, wherein, No barrier is provided in the path of liquid crystal infusion from the liquid crystal infusion opening to the liquid crystal cell.

24. The method of any of claims 15-23, further comprising sealing the liquid crystal infusion opening with a sealant and curing the sealant to form a seal that seals the liquid crystal infusion opening.

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