Transfer plate and alignment liquid coating device

Abstract

The present disclosure provides a transfer plate and an alignment liquid coating device, wherein the transfer plate comprises: a substrate and at least one transfer portion arranged on the substrate, wherein the transfer portion is used to transfer the alignment liquid to a display substrate; wherein a guide channel is arranged on the substrate, wherein the guide channel is arranged on at least one side around the transfer portion, and wherein the guide channel is connected to a guide port; and at a position corresponding to the guide port, a bottom surface of the guide channel and a surface of the transfer portion away from the substrate are connected via a guide surface.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a transfer plate and an alignment liquid coating device. Background Art

[0002] The liquid crystal display panel mainly includes an array substrate, a color filter substrate, and a liquid crystal layer filled between the array substrate and the color filter substrate. In order to make the liquid crystal molecules form a certain orientation in the liquid crystal display panel, it is necessary to make alignment films in the display area on the array substrate and the color filter substrate in the liquid crystal panel display.

[0003] In the existing process, the alignment film is generally formed by transferring the alignment liquid to the surface of the display substrate through a transfer plate and then curing it. Summary of the invention

[0004] In a first aspect, the present disclosure provides a transfer plate, comprising: a substrate and at least one transfer portion disposed on the substrate, the transfer portion being used to transfer an alignment liquid to a display substrate;

[0005] Among them, a guide channel is arranged on the base, and the guide channel is arranged on at least one side around the transfer part, and the guide channel is connected with the guide port; at the position corresponding to the guide port, the bottom surface of the guide channel and the surface of the transfer part away from the base are connected through the guide surface.

[0006] In some embodiments, the guide surface is an inclined surface, and an obtuse angle is formed between the inclined surface and the bottom surface of the guide channel.

[0007] In some embodiments, a shielding portion is disposed on the base, and the shielding portion is disposed opposite to the bottom surface of the guide channel.

[0008] In some embodiments, one end of the shielding portion is connected to the edge of the guide channel away from the transfer portion, and the other end extends toward the transfer portion and is spaced apart from the transfer portion; the guide port is located at the spaced position between the shielding portion and the transfer portion.

[0009] In some embodiments, at least one guide port is provided on the substrate, and the orthographic projection of the guide port on the substrate overlaps with the orthographic projection of the guide channel on the substrate;

[0010] The guide port is located at any position of the guide channel; or, the orthographic projection of the guide port on the substrate is a strip-shaped figure extending along at least one edge of the transfer portion.

[0011] In some embodiments, the transfer portion includes a main body portion and a plurality of dot structures arranged on the main body portion, wherein a surface of the main body portion away from the substrate is a concave surface curved toward the substrate, and the dot structure is arranged on the concave surface; from the middle to the edge of the transfer portion, the distance from the concave surface to the substrate gradually increases.

[0012] In some embodiments, the height of the dot structure is consistent or gradually decreases from the middle to the edge of the transfer portion.

[0013] In some embodiments, the height difference between the edge and the center of the concave surface is no greater than the maximum distance from the concave surface to the base.

[0014] In a second aspect, the present disclosure provides a transfer plate, comprising: a substrate and at least one transfer portion disposed on the substrate, the transfer portion being used to transfer an alignment liquid to a display substrate;

[0015] The transfer portion includes a main body portion and a plurality of mesh dot structures arranged on the main body portion, wherein a surface of the main body portion away from the substrate is a concave surface curved toward the substrate, and the mesh dot structure is arranged on the concave surface; from the middle to the edge of the transfer portion, the distance from the concave surface to the substrate gradually increases.

[0016] In some embodiments, the height of the dot structure is consistent or gradually decreases from the center to the edge of the transfer portion.

[0017] In a third aspect, the present disclosure provides an alignment liquid coating device, comprising the above-mentioned transfer plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0019] Figure 1 Schematic diagram of an alignment liquid coating device provided in some embodiments.

[0020] Figure 2 It is a plan view of a transfer plate provided in some embodiments of the present disclosure.

[0021] Figure 3 For along Figure 2 Sectional view along line A-A'.

[0022] Figure 4 It is a plan view of a transfer plate provided in some other embodiments of the present disclosure.

[0023] Figure 5 It is a plan view of a transfer plate provided in some other embodiments of the present disclosure.

[0024] Figure 6 It is a plan view of a transfer plate provided in some other embodiments of the present disclosure.

[0025] Figure 7 For along Figure 6 Cross-sectional view along line BB'.

[0026] Figure 8 for Figure 7 An enlarged schematic diagram of the transfer section in FIG.

[0027] Fig. 9 for Figure 7 Another enlarged schematic diagram of the transfer portion in FIG. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution 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. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0030] The terms used to describe the embodiments of the present disclosure herein are not intended to limit and / or define the scope of the present disclosure. For example, unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. It should be understood that the "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Unless the context clearly indicates otherwise, the singular form "one", "one" or "the" and other similar words do not indicate a quantity limit, but indicate that there is at least one. "Including" or "including" and other similar words mean that the elements or objects appearing in front of "including" or "including" cover the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] It should be noted that, for the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of the layers or regions are enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0032] The liquid crystal display panel mainly includes: an array substrate and a color filter substrate and a liquid crystal layer filled between the array substrate and the color filter substrate. In the liquid crystal display panel, the liquid crystal molecules between the array substrate and the color filter substrate flip after power is turned on. After the external voltage is removed, the alignment film coated on the array substrate and the color filter substrate controls the liquid crystal molecules to return to the initial state. The alignment film can be obtained by rubbing the polyimide film on the substrate or treating it with ultraviolet light. The rubbing orientation generally uses a rubbing cloth to rub the glass substrate with a certain pressure to form grooves in a specific direction on the surface of the polyimide film, thereby obtaining the orientation function. The ultraviolet light orientation uses the photochemical reaction of the ultraviolet photosensitive polymer monomer material to produce anisotropy. The liquid crystal molecules interact with the molecules on the surface of the alignment film and are arranged in the direction of the greatest light orientation force according to the law of minimum energy to achieve the orientation purpose.

[0033] In the existing process, the alignment film is generally formed by transferring the alignment liquid to the surface of the display substrate through a transfer plate and then curing it.

[0034] Figure 1 is a schematic diagram of an alignment liquid coating device provided in some embodiments, such as Figure 1 As shown, the alignment liquid coating device comprises: a guide tube 50, a roller 30, a plate shell 60, a scraper 40, a transfer plate 10 and a transmission platform 70, and the transfer plate 10 is fixed on the plate shell 60. When the alignment liquid is coated, the substrate to be coated with the alignment liquid is placed on the transmission platform 70, and the alignment liquid drips onto the roller 30 through the guide tube 50. The scraper 40 is used to evenly apply the alignment liquid. With the rotation of the roller 30 and the plate shell 60, the alignment liquid on the roller 30 is transferred to the transfer plate 10, and then transferred to the display substrate 2 by the transfer plate 10.

[0035] However, the alignment liquid has a strong diffusivity, and the precision control has always been difficult. When there is metal or a large step difference in the printed edge area on the display substrate 2, the diffusion speed of the alignment liquid will be different from other areas, and the final film formation will also be different. When the frame of the display substrate 2 is narrow, the alignment liquid is very likely to diffuse to the position corresponding to the frame sealant, causing the subsequently formed frame sealant to contact the orientation layer, which will reduce the adhesion of the frame sealant and affect the sealing of the edge position of the liquid crystal display panel, and ultimately cause liquid crystal display panel leakage and Mura and other defects.

[0036] Figure 2 is a plan view of a transfer plate provided in some embodiments of the present disclosure, Figure 3 For along Figure 2The cross-sectional view of the A-A' line is as follows: Figure 2 and Figure 3 As shown, the transfer plate 10 includes: a substrate 11 and at least one transfer portion 12 disposed on the substrate 11, and the transfer portion 12 is used to transfer the alignment liquid onto the display substrate.

[0037] For example, the transfer plate 10 includes a body and a plurality of dot structures disposed on the body, and the dot structures are located on a surface of the body away from the substrate 11. During the alignment liquid coating process, the alignment liquid absorbed by the transfer plate 10 can be stored in the spaces between the dot structures.

[0038] The number of the transfer unit 12 may be one or more, for example, Figure 2 As shown, there are multiple transfer parts 12, and the multiple transfer parts 12 can be arranged in an array. Each transfer part 12 can correspond to a display substrate, that is, when the alignment liquid coating process is performed, each transfer part 12 transfers the alignment liquid to a display substrate. It should be noted that Figure 2 The number and arrangement of the transfer parts 12 are only exemplary. In actual production, the transfer parts 12 can be set according to other numbers and other arrangements.

[0039] The display substrate is in a rectangular shape, and accordingly, the orthographic projection of the transfer portion 12 on the base 11 is a rectangle. When the display substrate is in other shapes, the shape of the transfer portion 12 can also be adjusted accordingly. The embodiment of the disclosure is described by taking the orthographic projection of the transfer portion 12 on the base 11 as a rectangle as an example.

[0040] like Figure 2 and Figure 3 As shown, a flow guiding channel 15 is also provided on the substrate, and a flow guiding channel 15 is provided on at least one side around the transfer portion 12. The flow guiding channel 15 is connected to the flow guiding port 15v, and at a position corresponding to the flow guiding port 15v, the bottom surface of the flow guiding channel 15 (i.e. Figure 3 The lower surface of the guide channel 15 is connected to the surface of the transfer part 12 away from the substrate 11 through the guide surface 14. The guide surface 14 is used to introduce the accumulated alignment liquid at the edge of the transfer part 12 into the guide channel 15 when the transfer part 12 is squeezed.

[0041] Among them, the guide channel 15 can be set on one side of each transfer part 12, or the guide channel 15 can be set on two sides, three sides or four sides around each transfer part 12. In addition, when the guide channels 15 are set on multiple sides around the transfer part 12, the guide channels 15 on different sides of the same transfer part 12 can be connected or not connected. For example, the guide channels 15 are set on the opposite sides of the transfer part 12, and the guide channels 15 on both sides are spaced from each other. For another example, the guide channels 15 are set on the adjacent two sides or adjacent three sides around the transfer part 12, and the guide channels 15 on the adjacent two sides or adjacent three sides are connected. In addition, when the guide channels 15 are set on multiple sides around the transfer part 12, the guide channels 15 on multiple sides can be connected to the same guide port 15v, or can be connected to different guide ports 15v. For example, the two sides around the transfer part 12 are provided with guide channels 15, and the guide channels 15 on the two sides are connected to the same guide port 15v, or the guide channels 15 on the two sides are respectively connected to different guide ports 15v. When the guide channels 15 on multiple sides are connected to the same guide port 15v, the guide port 15v can be located above the guide channel 15 on one side of the transfer part 12 (the "above" here refers to the side away from the substrate 11), and the guide channels 15 on the other sides are connected to the guide channel 15 below the guide port 15v.

[0042] In the disclosed embodiment, a guide channel 15 is provided on at least one side around each transfer portion 12, and the guide channel 15 is connected to the guide port 15v. When the transfer portion 12 dipped with the alignment liquid prints the alignment liquid onto the display substrate, the excess alignment liquid will be squeezed and enter the guide channel 15 along the guide surface 14, thereby preventing the formation of an alignment layer at the position of the sealant on the display substrate, thereby preventing the sealant from contacting the alignment layer and affecting the sealing of the liquid crystal display panel. In addition, the alignment liquid flowing into the guide channel 15 can be recycled to reduce production costs.

[0043] like Figure 3 As shown, the guide surface 14 is an inclined surface, and an obtuse angle is formed between the inclined surface and the bottom surface of the guide channel 15, so that the alignment liquid on the transfer part 12 can enter the guide channel 15 along the guide surface 14. The angle between the inclined surface and the bottom surface of the guide channel 15 can be in the range of (90°, 180°), for example, the angle between the inclined surface and the bottom surface of the guide channel 15 can be in the range of [100°, 150°], so that while the alignment liquid is facilitated to enter the guide channel 15, the width of the guide surface 14 is prevented from being too large, which causes the width of the transfer plate 10 to be too large.

[0044] It should be noted that the guide surface 14 may also be in other forms, as long as it is conducive to guiding the alignment liquid on the transfer part 12 to the guide channel 15. For example, the guide surface 14 may be a curved surface; for another example, the guide surface 14 includes two inclined surfaces with different inclination angles, and the two inclined surfaces are respectively connected to the bottom surface of the guide channel 15 and the surface of the transfer part 12 away from the substrate 11.

[0045] In some embodiments, a shielding portion 13 is disposed on the substrate 11, and the shielding portion 13 is disposed opposite to the bottom surface of the conducting channel, one end of the shielding portion 13 is connected to the edge of the guide channel 15 away from the transfer portion 12, and the other end extends toward the transfer portion 12, and there is a gap between the transfer portion 12, so that the guide channel 15 forms an inverted hook structure, which can prevent the alignment liquid in the guide channel 15 from being thrown out due to the rotation of the plate body during the transfer process of the alignment liquid. Among them, the guide port 15v is located at the gap between the shielding portion 13 and the transfer portion 12.

[0046] The gap between the shielding portion 13 and the edge of the transfer portion 12 at the location of the guide surface 14 is the guide port 15v. The width W of the guide port 15v is in the range of 0<W<1mm to prevent the alignment liquid in the guide channel 15 from being thrown out due to the rotation of the plate body 60.

[0047] The width of the guide port 15 v refers to the distance between the edge of the shielding portion 13 and the edge of the transfer portion 12 in a direction parallel to the substrate 11 .

[0048] It should be noted that, in the position where the guide surface 14 is not provided (for example, Figure 3 The shielding portion 13 may be in contact with the transfer portion 12, or may have a certain gap therebetween. In some examples, the guide channel 15 may be formed by laser or etching. To facilitate the manufacturing process, a certain gap is left between the shielding portion 13 and the transfer portion 12, and the gap is less than 1 mm to prevent the alignment liquid in the guide channel 15 from being thrown out due to the rotation of the plate body 60.

[0049] The guiding channel 15 and the dot structure in the transfer portion 12 can be formed simultaneously to simplify the manufacturing process. Of course, the two can also be formed in separate steps.

[0050] In the disclosed embodiment, the shielding portion 13 and the base may be an integral structure.

[0051] In the disclosed embodiment, at least one guide port 15v is provided on the base 11, and the orthographic projection of the guide port 15v on the base 11 overlaps with the orthographic projection of the guide channel 15 on the base 11. The orthographic projection of the guide port 15v on the base 11 is a rectangle or a rectangle.

[0052] For each guide port 15v, the guide port 15v can be located at any position of the guide channel 15. It should be noted that "the guide port 15 can be located at any position of the guide channel 15" means that the guide port 15 can be located at any position in the extension direction of the guide channel 15. For example, Figure 2 As shown, a flow guide channel 15 and a flow guide port 15v are provided on one side of the transfer portion 12, and the flow guide port 15v is located in the middle of the corresponding flow guide channel 15. Of course, the flow guide port 15v can also be provided at other positions of the flow guide channel 15, for example, at the end position of the flow guide channel 15. In one example, the length of the flow guide channel 15 is substantially equal to the length of the corresponding edge of the transfer portion 12. At this time, when the flow guide port 15v is located at the end position of the flow guide channel 15, the flow guide port 15 is adjacent to the corner position of the transfer portion 12.

[0053] Of course, the diversion port 15v can also be Figure 4 To set up, Figure 4 is a plan view of a transfer plate provided in some other embodiments of the present disclosure, Figure 4 The transfer plate 10 shown is Figure 2 is similar to Figure 4 In the figure, the orthographic projection of the guide port 15v on the substrate 11 is a strip-shaped pattern, and the strip-shaped pattern extends along at least one side edge of the transfer portion 12.

[0054] For example, Figure 4 For example, each transfer portion 12 is provided with a guide channel 15 on four sides, and the guide channels 15 on the four sides are connected to form a ring structure. A guide port 15v is provided on one side of the transfer portion 12, and the guide port 15v is located at one side edge of the corresponding transfer portion 12. The positive projection of the guide port 15v on the substrate 11 is a strip-shaped pattern, and the length of the strip-shaped pattern is greater than or equal to the length of one side edge of the transfer portion 12. Of course, the length of the adjustment pattern can also be less than the length of one side edge of the transfer portion 12.

[0055] When the display substrate is prone to accumulation of alignment liquid at both edges, the guide port 15v can be Figure 5 To set up, Figure 5 is a plan view of a transfer plate provided in some other embodiments of the present disclosure, Figure 5 The transfer plate 10 shown is Figure 4 Similar, except that Figure 5 In the embodiment, each transfer portion 12 is provided with a guide port 15v on both sides, and the orthographic projection of the guide port 15v on the substrate 11 is a strip-shaped pattern, and the length of the strip-shaped pattern is greater than or equal to the edge length of the transfer portion 12. Of course, the length of the strip-shaped pattern can also be less than the edge length of the transfer portion 12.

[0056] For example, in Figure 5In the figure, each transfer portion 12 is provided with a guide port 15v on both sides thereof. The length of the guide port 15v on the left side of the transfer portion 12 is greater than the length of the left edge of the transfer portion 12; the length of the guide port 15v on the right side of the transfer portion 12 is greater than the length of the right edge of the transfer portion 12.

[0057] It should be noted that the layout of the guide port 15v is not limited to the above situation, and can be specifically arranged according to the accumulation situation during the coating process of the alignment liquid. For example, when the alignment liquid is easily accumulated on the four edges of the display substrate, the guide ports 15v can be arranged on the four sides of the transfer portion 12, and the length of the guide port 15v on each side of the transfer portion 12 is greater than or equal to the corresponding edge of the transfer portion 12, so that the guide ports 15v on all sides are connected to form a ring structure. For another example, the alignment liquid is easily accumulated at the corner position of the display substrate. In this case, the guide port 15v can be arranged at the corner position of the transfer portion 12. Of course, the guide port 15v can also be arranged on each side of the transfer portion 12.

[0058] In the above embodiment, by designing the guide channel 15 on the transfer plate 10, when the transfer plate 10 soaked with the alignment liquid contacts the display substrate, the excess alignment liquid at the edge of the transfer portion 12 enters the guide channel 15 through the guide port 15v, so that the accuracy of the alignment film obtained can be controlled within 150μm.

[0059] In the above embodiment, the width and depth of the guide channel 15 can be set according to actual needs, wherein the thickness of the substrate 11 is h1, the depth of the guide channel 15 is in the range of (0, h1], and the width of the guide port 15v is less than or equal to the width of the guide channel 15. For example, the depth of the guide channel 15 is less than 1 / 2, or 1 / 3, or 2 / 3, or 1 / 4 of the thickness h1 of the substrate 11. For example, the width of the conductive channel is greater than 1.2 times, or 1.5 times, or 2 times, or 2.5 times, or 3 times the width of the guide port 15v. The width of the guide channel 15 is the width of the positive projection of the guide channel 15 on the substrate 11, and the width direction is perpendicular to the extension direction of the corresponding edge of the transfer portion 12.

[0060] Figure 6 is a plan view of a transfer plate provided in some other embodiments of the present disclosure, Figure 7 For along Figure 6 The cross-sectional view of the B-B' line, Figure 2 and Figure 3 The transfer plate 10 shown is similar in that Figure 6 and Figure 7 The transfer plate 10 shown in the figure includes: a substrate 11 and a transfer portion 12 disposed on the substrate 11, and the transfer portion 12 is used to transfer the alignment liquid to the display substrate. Figure 8 for Figure 7An enlarged schematic diagram of the transfer section in FIG. Figure 7 and Figure 8 As shown, the transfer plate 10 includes a main body 12a and a plurality of dot structures 12b, and the dot structures 12b are arranged on a surface of the main body 12a away from the substrate 11. Figure 2 and Figure 3 The transfer plate 10 shown is different in that Figure 6 and Figure 7 In the embodiment, the above-mentioned guide channel 15 is no longer provided, but the main body 12a and the mesh structure 12b are provided to prevent the problem of excessive accumulation of alignment liquid at the edge of the display substrate, which may cause the frame sealant to contact the alignment layer.

[0061] Specifically, Figure 8 As shown, the surface of the substrate 11 away from the main body 12a is a concave surface that is curved toward the substrate 11, and the dot structure 12b is arranged on the concave surface. From the middle to the edge of the transfer part 12, the distance from the concave surface to the substrate 11 gradually increases, that is, from the middle to the edge of the transfer part 12, the thickness of the main body 12a gradually increases. In this case, the middle position of the transfer part 12 picks up more alignment liquid, and the edge position picks up less alignment liquid, so that after the transfer part 12 prints the alignment liquid onto the display substrate, the alignment liquid at the edge position of the coating area is prevented from flowing to the frame glue area, thereby preventing the frame glue from contacting the orientation layer and affecting the sealing of the edge position of the liquid crystal display panel.

[0062] In some embodiments, the mesh dot structure 12b may be a columnar structure, or the cross section of the mesh dot structure 12b may gradually increase in the direction close to the substrate 11, so as to facilitate the transfer unit 12 to pick up the alignment liquid. The cross section of the mesh dot structure 12b refers to the cross section of the mesh dot structure 12b in the direction perpendicular to the thickness of the substrate 11. The orthographic projection of the mesh dot structure 12b on the substrate 11 may be circular, elliptical, rectangular or other irregular shapes, which are not limited here.

[0063] In some embodiments, the heights of the mesh structures 12b are the same.

[0064] Fig. 9 for Figure 7 Another enlarged schematic diagram of the transfer portion in FIG. Fig. 9 As shown, in some embodiments, the height of the dot structure 12b gradually decreases from the middle to the edge of the transfer portion 12, so that the amount of alignment liquid absorbed by the edge of the transfer portion 12 is less, further reducing the possibility of the frame sealant contacting the alignment layer.

[0065] It should be noted that the height of the dot structure 12b refers to the distance from the end of the dot structure 12b away from the concave surface to the concave surface. Fig. 9In the embodiment, the ends of the plurality of mesh point structures 12 away from the concave surface may be on the same plane or may not be on the same plane.

[0066] In some embodiments, the concave surface is an arc-shaped surface, so that the storage amount of the alignment liquid can gradually change from the middle to the edge of the transfer portion 12. Of course, the concave surface can also be other morphologies, which are not listed here one by one.

[0067] The concave surface can be formed by laser or etching process. In some embodiments, the maximum distance from the concave surface to the substrate 11 is h2 (i.e., the distance from the edge of the concave surface to the substrate 11), and the height difference h3 between the edge and the center of the concave surface is not greater than h2. In other words, in the process of forming the concave surface, the substrate 11 will not be etched, thereby simplifying the preparation process.

[0068] It should be noted that the above different embodiments can be combined with each other to form new embodiments if they are not contradictory. Figure 2 , Figure 4 , Figure 5 In the transfer plate 10 shown in FIG. 1 , the transfer portion 12 can be formed as follows: Figure 8 or Fig. 9 The transfer part 12 shown in the figure is set, and the surface of the main body 12a of the transfer part 12 away from the substrate 11 is set as a curved surface, and the height of the dot structure 12b on the curved surface is set in a trend of gradually decreasing from the middle to the edge.

[0069] The present disclosure also provides an alignment liquid coating device, which includes the transfer plate in any of the above embodiments. In addition, the alignment liquid coating device may also include: a guide tube, a roller, a plate body, a scraper and a transmission platform. The functions of each structure refer to the above description of Figure 1 The description is not repeated here.

[0070] The above is a description of the transfer plate and the alignment liquid coating device in the present disclosure. It can be seen that in the embodiment of the present disclosure, by setting a guide channel around the transfer part, the excess alignment liquid picked up by the transfer part can be squeezed into the guide channel, thereby preventing the alignment liquid from accumulating in the frame sealant area at the edge of the display substrate, thereby preventing the sealant from contacting the alignment film formed by curing and affecting the sealing of the display panel. Alternatively, the surface of the transfer part away from the substrate is set as a curved concave surface, so that the alignment liquid picked up by the transfer part gradually decreases from the center of the transfer part to the edge. At this time, it is also possible to prevent the alignment liquid from accumulating in the frame sealant area at the edge of the display substrate, thereby preventing the sealant from contacting the alignment film formed by curing and affecting the sealing of the display panel.

[0071] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A transfer plate, characterized in that: The invention comprises: a substrate and at least one transfer part arranged on the substrate, wherein the transfer part is used for transferring an alignment liquid to a display substrate; Among them, a guide channel is arranged on the base, and the guide channel is arranged on at least one side around the transfer part, and the guide channel is connected with the guide port; at the position corresponding to the guide port, the bottom surface of the guide channel and the surface of the transfer part away from the base are connected through the guide surface.

2. The transfer plate according to claim 1, characterized in that: The guide surface is an inclined surface, and an obtuse angle is formed between the inclined surface and the bottom surface of the guide channel.

3. The transfer plate according to claim 1, characterized in that: A shielding portion is arranged on the base, and the shielding portion is arranged opposite to the bottom surface of the guide channel.

4. The transfer plate according to claim 3, characterized in that: One end of the shielding portion is connected to the edge of the guide channel away from the transfer portion, and the other end extends toward the transfer portion and is spaced apart from the transfer portion; the guide port is located at the spaced position between the shielding portion and the transfer portion.

5. The transfer plate according to any one of claims 1 to 3, characterized in that At least one guide port is provided on the substrate, and the orthographic projection of the guide port on the substrate overlaps with the orthographic projection of the guide channel on the substrate; The guide port is located at any position of the guide channel; or, the orthographic projection of the guide port on the substrate is a strip-shaped figure extending along at least one edge of the transfer portion.

6. The transfer plate according to any one of claims 1 to 3, characterized in that The transfer portion includes a main body portion and a plurality of mesh dot structures arranged on the main body portion, wherein a surface of the main body portion away from the substrate is a concave surface curved toward the substrate, and the mesh dot structure is arranged on the concave surface; from the middle to the edge of the transfer portion, the distance from the concave surface to the substrate gradually increases.

7. The transfer plate according to claim 6, characterized in that: From the middle to the edge of the transfer portion, the height of the dot structure is consistent or gradually decreases.

8. The transfer plate according to claim 6, characterized in that: The height difference between the edge and the center of the concave surface is not greater than the maximum distance from the concave surface to the base.

9. An alignment liquid coating device, characterized in that: A transfer plate comprising the transfer plate according to any one of claims 1 to 8.

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