WO2021164059A1

WO2021164059A1 - Liquid crystal display panel and preparation method therefor

Info

Publication number: WO2021164059A1
Application number: PCT/CN2020/077988
Authority: WO
Inventors: 赵松涛; 朱清永
Original assignee: Tcl华星光电技术有限公司
Priority date: 2020-02-20
Filing date: 2020-03-05
Publication date: 2021-08-26
Also published as: CN111176027A

Abstract

Disclosed are a liquid crystal display panel and a preparation method therefor. The liquid crystal display panel comprises a first substrate, a second substrate, an insulating member (30), a filling adhesive (40) and a conductive member (50), wherein a conduction electrode (14) is formed in a seal area (200) of the first substrate; the second substrate comprises a common electrode (23); the insulating member (30) is positioned inside the seal area (200) and covers the common electrode (23); the filling adhesive (40) is positioned inside the seal area (200); and both ends of the conductive member (50) are connected to side faces of the common electrode (23) and the conduction electrode (14). The conduction electrode (14) and the common electrode (23) cannot be short-circuited.

Description

Liquid crystal display panel and preparation method thereof

Technical field

The present application relates to the field of display technology, in particular to a liquid crystal display panel and a preparation method thereof.

Background technique

In the liquid crystal display panel, the array substrate and the color filter substrate are bonded and sealed by the seal in the seal area. Conduction electrodes are arranged on the array substrate in the frame glue area. The frame glue includes filling glue and gold balls. The filling glue is an insulating glue and is arranged in the entire glue frame area. The gold balls are conductive glue and are only provided corresponding to the conduction electrodes.

Under normal circumstances, the array substrate and the color filter substrate in the sealant area only need to connect the common electrode and the conductive electrode through the gold ball to realize signal transmission, and the various parts of the filling glue connection should be kept insulated. However, the filling glue material or filling During the coating process of the glue material, if conductive foreign matter is mixed in, it will cause a short circuit between the array substrate and the color filter substrate, causing abnormal display of the liquid crystal display panel or even damage.

Therefore, the existing liquid crystal display panel has a technical problem that a short circuit is prone to occur in the seal area, and needs to be improved.

technical problem

The present application provides a liquid crystal display panel and a preparation method thereof, so as to alleviate the technical problem that short circuits easily occur in the frame rubber area of the existing liquid crystal display panel.

Technical solutions

In order to solve the above problems, the technical solutions provided by this application are as follows:

This application provides a liquid crystal display panel, including:

The first substrate includes a stacked first substrate, a driving circuit layer and pixel electrodes, the first substrate has a conductive electrode formed in a sealant area, and the sealant area is arranged around the display area;

A second substrate is arranged opposite to the first substrate, and in a direction close to the first substrate, the second substrate includes a second substrate, a black matrix, and a common electrode that are stacked and arranged;

An insulating member arranged on a side of the common electrode close to the first substrate and located in the frame rubber area, the insulating member covering the common electrode;

Filling glue, arranged between the first substrate and the second substrate, and located in the frame glue area;

The conductive member is arranged on the side surface of the liquid crystal display panel, and both ends of the conductive member are respectively connected to the side surface of the common electrode and the side surface of the conducting electrode.

In the liquid crystal display panel of the present application, the conductive member is at least one of a silver conductive film or a gold conductive film.

In the liquid crystal display panel of the present application, the liquid crystal display panel further includes a supporting column disposed on a side of the second substrate close to the first substrate, and in the display area, the supporting column corresponds to the black It is arranged in a matrix, and the supporting column forms the insulating member in the frame rubber area.

In the liquid crystal display panel of the present application, the liquid crystal display panel further includes a supporting column disposed on a side of the second substrate close to the first substrate, and the supporting column is located in the display area and corresponds to the The black matrix is arranged, and the material of the insulating member is different from the material of the supporting column.

In the liquid crystal display panel of the present application, the first substrate is formed with a plurality of conduction electrodes, the plurality of conduction electrodes are arranged at intervals in the sealant area, the number of the conductive members and the The positions of the side surfaces of the liquid crystal display panel correspond to the conductive electrodes in a one-to-one correspondence.

The present application also provides a method for manufacturing a liquid crystal display panel, including:

A first substrate is prepared. The first substrate includes a first substrate, a driving circuit layer, and a pixel electrode that are stacked, and a conductive electrode is formed in a sealant area of the first substrate, and the sealant area surrounds the display area. set up;

Preparing a second substrate, the second substrate including a second substrate, a black matrix, and a common electrode that are stacked and arranged;

Preparing an insulating member on the common electrode, the insulating member being located in the frame rubber area and covering the common electrode;

Coating a filler between the first substrate and the second substrate, the filler is located in the frame rubber area, and the first substrate and the second substrate are boxed together;

A conductive member is prepared on the side surface of the liquid crystal display panel, and both ends of the conductive member are respectively connected to the side surface of the common electrode and the side surface of the conducting electrode.

In the manufacturing method of the liquid crystal display panel of the present application, the first substrate is prepared, and the first substrate includes a first substrate, a driving circuit layer, and a pixel electrode that are stacked and arranged in a seal area of the first substrate. The step of forming a conductive electrode inside, and setting the sealant area around the display area further includes: forming a connecting electrode in an edge area of the first substrate, and the edge area is located outside the sealant area.

In the manufacturing method of the liquid crystal display panel of the present application, the filler is coated between the first substrate and the second substrate, the filler is located in the sealant area, and the first The step of arranging the substrate and the second substrate into the box further includes: coating a gold ball on the edge area of the second substrate, the gold ball corresponding to the position of the connection electrode.

In the manufacturing method of the liquid crystal display panel of the present application, the filler is coated between the first substrate and the second substrate, the filler is located in the sealant area, and the first After the step of aligning the substrate and the second substrate to the box, the method further includes:

Performing a lighting test through the connecting electrode;

After the test is completed, the parts in the edge area are cut off.

In the method for manufacturing a liquid crystal display panel of the present application, the conductive member is prepared on the side of the liquid crystal display panel, and both ends of the conductive member are connected to the side surface of the common electrode and the side surface of the conductive electrode. The step includes: preparing at least one of a silver conductive film or a gold conductive film on the side of the liquid crystal display panel.

Beneficial effect

Beneficial effects of the present application: The present application provides a liquid crystal display panel and a preparation method thereof. The liquid crystal display panel includes a first substrate, a second substrate, an insulating member, a filler, and a conductive member. The bottom, the driving circuit layer and the pixel electrodes, the first substrate is formed with conductive electrodes in the sealant area, and the sealant area is arranged around the display area; the second substrate is arranged opposite to the first substrate in the direction close to the first substrate, The second substrate includes a stacked second substrate, a black matrix, and a common electrode; the insulating member is arranged on the side of the common electrode close to the first substrate, and is located in the sealant area, and the insulating member covers the common electrode; the filling glue is arranged on the first substrate. A substrate and a second substrate are located in the sealant area; the conductive member is arranged on the side of the liquid crystal display panel, and the two ends of the conductive member are respectively connected with the side surface of the common electrode and the side surface of the conducting electrode. By providing the insulating member and the conductive member, the conductive electrode is connected to the common electrode on the side surface of the liquid crystal display panel. In the sealant area, the first substrate and the second substrate cannot be connected through the filling glue, so it will not cause The first substrate and the second substrate are short-circuited, which improves the quality of the liquid crystal display panel.

Description of the drawings

The following detailed description of specific implementations of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application obvious.

FIG. 1 is a schematic diagram of a film structure of a liquid crystal display panel provided by an embodiment of the application.

FIG. 2 is a schematic diagram of a planar structure of a liquid crystal display panel provided by an embodiment of the application.

FIG. 3 is a schematic diagram of a planar structure of a liquid crystal display panel in the prior art.

Fig. 4 is a schematic diagram of the film structure of the A-A section in Fig. 3.

Fig. 5 is a schematic diagram of the film structure of the B-B section in Fig. 3.

FIG. 6 is a schematic flow chart of a method for manufacturing a liquid crystal display panel provided by an embodiment of the application.

FIG. 7 is a schematic diagram of the first stage of the manufacturing method of the liquid crystal display panel provided by the embodiment of the application.

FIG. 8 is a schematic diagram of the second stage of the manufacturing method of the liquid crystal display panel provided by the embodiment of the application.

FIG. 9 is a schematic diagram of the third stage of the manufacturing method of the liquid crystal display panel provided by the embodiment of the application.

FIG. 10 is a schematic diagram of the fourth stage of the manufacturing method of the liquid crystal display panel provided by the embodiment of the application.

FIG. 11 is a schematic diagram of the fifth stage of the manufacturing method of the liquid crystal display panel provided by the embodiment of the application.

FIG. 12 is a schematic diagram of the sixth stage of the manufacturing method of the liquid crystal display panel provided by the embodiment of the application.

Embodiments of the present invention

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" and other directions or The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a restriction on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, "multiple" means two or more than two, unless otherwise specifically defined.

In the description of this application, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relation. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

In this application, unless expressly stipulated and defined otherwise, the "on" or "under" of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them. Moreover, the "above", "above" and "above" of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

The following disclosure provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and are not intended to limit the application. In addition, the present application may repeat reference numerals and/or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

As shown in FIG. 1, it is a schematic diagram of the film structure of a liquid crystal display panel provided by an embodiment of the application. The liquid crystal display panel includes a display area 100 and a sealant area 200 arranged around the display area 100. The liquid crystal display panel also includes a first substrate, a second substrate, an insulating member 30, a filler 40, and a conductive member 50. The first substrate includes a laminated arrangement. The first substrate 11, the driving circuit layer and the pixel electrode 13, the first substrate is formed with a conductive electrode 14 in the sealant area 200, the sealant area 200 is arranged around the display area 100; the second substrate is arranged opposite to the first substrate In the direction close to the first substrate, the second substrate includes a second substrate 21, a black matrix 22, and a common electrode 23 that are stacked; the insulating member 30 is disposed on the side of the common electrode 23 close to the first substrate and is located in the frame. In the glue area 200, the insulating member 30 covers the common electrode 23; the filler 40 is arranged between the first substrate and the second substrate and is located in the sealant area 200; the conductive member 50 is arranged on the side of the liquid crystal display panel, and the conductive member 50 Both ends are respectively connected to the side surface of the common electrode 23 and the side surface of the conduction electrode 14.

As shown in FIG. 2, it is a schematic diagram of the planar structure of the liquid crystal display panel. The display area 100 is located in the middle area of the liquid crystal display panel, and the sealant area 200 is arranged around the display area 100 in a ring shape.

As shown in FIG. 1, the liquid crystal display panel includes a first substrate and a second substrate that are opposed to each other. The first substrate includes a first substrate 11, a driving circuit layer, and a pixel electrode 13, and the second substrate includes a second substrate that is stacked. The bottom 21, the black matrix 22 and the common electrode 23.

The first substrate 11 may be a rigid substrate, such as glass, transparent resin, etc., or a flexible substrate, such as polyimide, polycarbonate, polyethersulfone, polyethylene terephthalate, poly Ethylene naphthalate, polyarylate, glass fiber reinforced plastic, etc., the material of the first substrate 11 is not limited in the present application.

The driving circuit layer is formed on the side of the first substrate 11 and includes a plurality of thin film transistors. Taking bottom-gate thin film transistors as an example, in the display area 100, the driving circuit layer includes a first substrate layered on the first substrate 11. The metal layer 121, the first gate insulating layer 122, the second metal layer 123, the second gate insulating layer 124, the active layer 125, and the source-drain layer 126. Wherein, the first metal layer 121 is patterned to form the gate and scan lines of the thin film transistor, and the source and drain layer 126 is patterned to form the source, drain and data lines of the thin film transistor.

The pixel electrode 13 is formed on the side of the driving circuit layer away from the first substrate 11, and the drain in the driving circuit layer is connected to the pixel electrode 13 to provide the pixel electrode 13 with a driving voltage.

In the sealant area 200, a conductive electrode 14 is formed on the first substrate, and the conductive electrode 14 is formed by the driving circuit layer and the pixel electrode 13.

In an embodiment, the first substrate further includes a color resist layer, and the color resist layer is formed between the driving circuit layer and the pixel electrode 13. As shown in FIG. 1, the color resist layer includes a red color resist (not shown), a green color resist 1281, and a blue color resist 1282. At this time, the first substrate is an array color filter substrate, and the liquid crystal display panel after being aligned with the second substrate is a COA liquid crystal display panel.

The second substrate 21 in the second substrate can be a rigid substrate, such as glass, transparent resin, etc., or a flexible substrate, such as polyimide, polycarbonate, polyethersulfone, and polyethylene terephthalate. Alcohol ester, polyethylene naphthalate, polyarylate or glass fiber reinforced plastic, etc., the material of the first substrate 11 is not limited in the present application.

The black matrix 22 is formed on the side of the second substrate 21 close to the first substrate, and defines a plurality of pixel regions.

The common electrode 23 is formed on the side of the black matrix 22 away from the second substrate 21, and the material of the common electrode 23 is ITO.

In an embodiment, the second substrate includes a color resist layer, the color resist layer and the black matrix 22 are formed on the side of the second substrate 21, and the common electrode 23 covers the color resist layer and the black matrix 22. At this time, the color resist layer is formed in the pixel area defined by the black matrix 22, the first substrate is an array substrate, and the second substrate is a color filter substrate.

The insulating member 30 is disposed on a side of the common electrode 23 close to the first substrate and located in the sealant area 200, and the insulating member 30 covers the common electrode 23.

In an embodiment, the liquid crystal display panel further includes a supporting column disposed on the side of the second substrate close to the first substrate. In the display area 100, the supporting column is disposed corresponding to the black matrix 22, and in the sealant area 200, the supporting column The insulating member 30 is formed. The support column is formed on the side of the common electrode 23 close to the first substrate. In the display area 100, the support column includes a main support column 61 and an auxiliary support column 62 for supporting the thickness of the box. The height is different to increase the range of increase or decrease in the amount of liquid crystal of the liquid crystal display panel; in the sealant area 200, the support pillars form the insulating member 30, that is, the main support pillar 61 and the auxiliary support in the display area 100 are formed at the same time through a mask. The post 62 and the insulating member 30 in the sealant area 200 are made of the same material and are all photoresist. This method only needs to change the photomask design of the support column, which is simple and easy to implement.

In an embodiment, the supporting column only includes the main supporting column 61 and the auxiliary supporting column 62 in the display area 100. In this case, the insulating member 30 and the supporting column are made of different materials. The supporting column and the insulating member can be formed by two masks respectively. Component 30.

The filler 40 is disposed between the first substrate and the second substrate, and is located in the sealant area 200. When the first substrate and the second substrate are aligned, the filler 40 is first applied to the entire seal area 200 of the first substrate or the second substrate, and then the first substrate and the second substrate are aligned, and liquid crystal is filled in it. The molecules 70 are then thermally cured or ultraviolet cured on the filler 40 to bond the first substrate and the second substrate.

The material of the filler 40 is usually resin, which is used to bond the first substrate and the second substrate. A certain proportion of spacers 41 are added to the filler 40. The material of the spacers 41 can be glass fiber, silicon balls or plastic. The presence of insulating materials such as balls and spacers 41 can enable the filler 40 to maintain the cell thickness around the liquid crystal cell and avoid display failure due to uneven cell thickness.

The conductive member 50 is disposed on the side surface of the liquid crystal display panel, and both ends of the conductive member 50 are connected to the side surface of the common electrode 23 and the side surface of the conduction electrode 14 respectively. When the liquid crystal display panel is working, a voltage needs to be applied to the pixel electrode 13 of the first substrate and the common electrode 23 of the second substrate to form an electric field between the two to drive the liquid crystal molecules 70 to deflect, so that the light emitted by the backlight module Through, display. Wherein, the voltage on the pixel electrode 13 is provided by the driving circuit layer, and the voltage on the common electrode 23 needs to be provided by the conductive electrode 14 on the first substrate. Therefore, in the sealant area 200, only the conduction electrode 14 and the common electrode 23 need to be connected, and the common electrode 23 and the pixel electrode 13 in other parts need to be insulated.

In an embodiment, the conductive member 50 is at least one of a silver conductive film or a gold conductive film, and side bonding (Side The bonding process is plated on the side of the liquid crystal display panel.

The arrangement of the conducting electrodes 14 is shown in FIG. 2, the first substrate is formed with a plurality of conducting electrodes 14, and the plurality of conducting electrodes 14 are arranged at intervals in the sealant area 200. The number of conducting members 50 and the liquid crystal The positions on the sides of the display panel correspond to the conductive electrodes 14 in a one-to-one correspondence. In an embodiment, the width of the conductive member 50 is greater than or equal to the width of the side surface of the conducting electrode 14 to make the conducting effect better.

According to the above-mentioned embodiments, the present application provides the insulating member 30 and the conductive member 50 so that the conductive electrode 14 is connected to the common electrode 23 on the side surface of the liquid crystal display panel, so as to ensure the normal conduction of the driving voltage on the common electrode 23. In the sealant area 200, the first substrate and the second substrate cannot be connected through the filler 40, so that the first substrate and the second substrate will not be short-circuited, and the quality of the liquid crystal display panel is improved.

3 to 5 show schematic diagrams of the structure of a liquid crystal display panel in the prior art. 3 is a schematic diagram of the planar structure of a liquid crystal display panel in the prior art, FIG. 4 is a schematic diagram of the film structure of the A-A section in FIG. 3, and FIG. 5 is a schematic diagram of the film structure of the B-B section in FIG. 3.

As shown in FIG. 3, the liquid crystal display panel in the prior art includes a display area 100 and a sealant area 200. In the sealant area 200, the filler 40 is arranged in a ring around the entire sealant area 200, and the golden balls 42 are spaced in dots. Distributed in the filler 40.

As shown in FIG. 4, the gold ball 42 is a conductive material, and the gold ball 42 is arranged in the filling glue 30 in a dotted manner. The conductive electrode 14 is connected to the common electrode 23 through the gold ball 42 to realize the connection of the driving signal of the common electrode 23. As shown in FIG. 5, the spacer 41 in the filler 40 is made of an insulating material. Therefore, all parts of the first substrate frame rubber area 200 except for the conductive electrode 14 are insulated from the common electrode 23 to ensure that the common electrode 23 and the pixel are insulated from each other. The driving voltages of the electrodes 13 are different, and the control of the liquid crystal molecules 70 is achieved.

Under normal circumstances, the first substrate and the second substrate in the sealant area 200 only need to connect the common electrode 23 and the conductive electrode 14 through the gold ball to realize signal transmission, and the parts connected by the filler 40 should be insulated. For GOA products, in order to prevent the golden ball 42 from conducting the signal line and the common electrode 23 in the GOA area, the golden ball 42 can only be made in the filling glue 40 by means of dots, and the Au in Seal technology cannot be used, and the production process is relatively cumbersome. Moreover, the volume of the golden ball 42 is relatively large, which makes the width of the sealant area 200 relatively large, and it is difficult to realize the narrow frame design of the liquid crystal display panel.

In addition, during the coating process of the filler material or the filler material, if conductive foreign matter is mixed in, it will cause a short circuit between the first substrate and the second substrate, causing abnormal display of the liquid crystal display panel or even damage.

In the present application, the conductive member 50 is provided on the side of the liquid crystal display panel, and there is no need to set the gold ball 42 to conduct the common electrode 23 and the conductive electrode 14. Therefore, the manufacturing process is simplified and the area occupied by the gold ball 42 can be saved. , So as to achieve a narrow frame. In addition, by providing the insulating member 30 to cover the common electrode 23 in the sealant area 200, even if conductive foreign matter is mixed into the filler 40, the first substrate and the second substrate will not be short-circuited, thereby reducing the safety of the liquid crystal display panel. Risks improve product quality.

As shown in FIG. 6, the present application also provides a method for manufacturing a liquid crystal display panel, which specifically includes:

601: Prepare a first substrate. The first substrate includes a first substrate, a driving circuit layer, and a pixel electrode that are stacked, and a conductive electrode is formed in the sealant area of the first substrate, and the sealant area is arranged around the display area;

602: Prepare a second substrate, which includes a second substrate, a black matrix, and a common electrode that are stacked and arranged;

603: Prepare an insulating member on the common electrode, the insulating member is located in the frame rubber area and covers the common electrode;

604: Coat filler between the first substrate and the second substrate, the filler is located in the sealant area, and the first substrate and the second substrate are boxed together;

605: Prepare a conductive member on the side of the liquid crystal display panel, and the two ends of the conductive member are respectively connected to the side surface of the common electrode and the side surface of the conducting electrode.

The preparation method will be described in detail below with reference to FIGS. 7 to 12.

In step 601, a first substrate is prepared. As shown in FIG. 7, the first substrate includes a first substrate 11, a driving circuit layer and a pixel electrode 13.

In the sealant area 200, a conductive electrode 14 is formed on the first substrate, and the conductive electrode 14 is formed by the driving circuit layer and the pixel electrode 13. The seal area 200 is arranged around the display area 100.

In an embodiment, the connecting electrode 15 is formed in the edge area 300 on the first substrate, wherein the edge area 300 is located outside the sealant area 200.

In step 602, a second substrate is prepared. As shown in FIG. 8, the second substrate includes a second substrate 21, a black matrix 22 and a common electrode 23 that are stacked.

In an embodiment, the second substrate includes a color resist layer (not shown in the figure), the color resist layer and the black matrix 22 are formed on the side of the second substrate 21, and the common electrode 23 covers the color resist layer and the black matrix 22. At this time, the color resist layer is formed in the pixel area defined by the black matrix 22, the first substrate is an array substrate, and the second substrate is a color filter substrate.

In step 603, an insulating member is prepared. As shown in FIG. 9, the insulating member 30 is disposed on the side of the common electrode 23 close to the first substrate and located in the sealant area 200, and the insulating member 30 covers the common electrode 23.

In the above-mentioned embodiment, the supporting column or insulating member 30 is not provided on the common electrode 23 in the edge region 300.

In step 604, a filler is applied between the first substrate and the second substrate and the box is formed. As shown in FIG. 10, the filler 40 is disposed between the first substrate and the second substrate, and is located in the sealant area 200. When the first substrate and the second substrate are aligned, the filler 40 is first applied to the entire seal area 200 of the first substrate or the second substrate, and then the first substrate and the second substrate are aligned, and liquid crystal is filled in it. The molecules 70 are then thermally cured or ultraviolet cured on the filler 40 to bond the first substrate and the second substrate.

In one embodiment, before aligning the box, a gold ball 42 is first coated in the edge area 300 on the second substrate, and the gold ball 42 corresponds to the position of the connection electrode 15. After the box is assembled, the connection electrode 15 and the common electrode 23 are connected through the gold ball 42. The base material of the gold ball 42 is a resin ball, and the resin ball is first wrapped with a layer of metallic nickel and then a layer of metallic gold. The gold ball 42 is formed on the connection electrode 15 through a dot process.

In the above process, both the first substrate and the second substrate are prepared in the mother board. After the cell is aligned, the whole formed by each first substrate and the second substrate needs to be cut from the mother board to form a separate liquid crystal cell. After that, polish the cut surface.

In one embodiment, after the liquid crystal cell is prepared, it is necessary to perform a lighting test through the connecting electrode 15 first. After the test is completed, the parts in the edge area 300 are cut off, and the remaining part of the structure after the cut is shown in FIG. 11. During the lighting test, the external circuit is connected to the connection electrode 15, and the signal connection to the common electrode 23 is realized through the gold ball 42. In addition, the connection electrode 15 can also be connected to various signal lines in the first substrate, and input signals for alignment and detection.

In step 605, the conductive member 50 is prepared. As shown in FIG. 12, the conductive member 50 is disposed on the side surface of the liquid crystal display panel, and both ends of the conductive member 50 are connected to the side surface of the common electrode 23 and the side surface of the conduction electrode 14 respectively. When the liquid crystal display panel is working, a voltage needs to be applied to the pixel electrode 13 of the first substrate and the common electrode 23 of the second substrate to form an electric field between the two to drive the liquid crystal molecules 70 to deflect, so that the light emitted by the backlight module Through, display. Wherein, the voltage on the pixel electrode 13 is provided by the driving circuit layer, and the voltage on the common electrode 23 needs to be provided by the conductive electrode 14 on the first substrate. Therefore, in the sealant area 200, only the conduction electrode 14 and the common electrode 23 need to be connected, and the common electrode 23 and the pixel electrode 13 in other parts need to be insulated.

It can be seen from the above-mentioned embodiments that the method for preparing the liquid crystal display panel provided by the embodiment of the present application includes the insulating member 30 and the conductive member 50, so that the conductive electrode 14 is connected to the common electrode 23 on the side of the liquid crystal display panel, ensuring the common The driving voltage on the electrode 23 is normally conducted, and in the sealant area 200, the first substrate and the second substrate cannot be connected through the filler 40, so the first substrate and the second substrate will not be short-circuited, which improves the liquid crystal display Panel quality.

According to the above embodiment, it can be seen that:

The present application provides a liquid crystal display panel and a preparation method thereof. The liquid crystal display panel includes a display area and a sealant area arranged around the display area, and further includes a first substrate, a second substrate, an insulating member, a filler, and a conductive member, The first substrate includes a first substrate, a driving circuit layer and a pixel electrode which are stacked and arranged. The first substrate has a conductive electrode formed in the frame rubber area, and the frame rubber area is arranged around the display area; the second substrate is arranged opposite to the first substrate , In the direction close to the first substrate, the second substrate includes a stacked second substrate, a black matrix, and a common electrode; the insulating member is arranged on the side of the common electrode close to the first substrate, and is located in the sealant area, insulating The component covers the common electrode; the filling glue is arranged between the first substrate and the second substrate and is located in the sealant area; the conductive member is arranged on the side of the liquid crystal display panel, and the two ends of the conductive member are respectively connected to the side surface of the common electrode and the conductive electrode The side connection. By providing the insulating member and the conductive member, the conductive electrode is connected to the common electrode on the side surface of the liquid crystal display panel. In the sealant area, the first substrate and the second substrate cannot be connected through the filling glue, so it will not cause The first substrate and the second substrate are short-circuited, which improves the quality of the liquid crystal display panel.

In summary, although the application has been disclosed as above in preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the application. Those of ordinary skill in the art can make various decisions without departing from the spirit and scope of the application. Such changes and modifications, so the protection scope of this application is subject to the scope defined by the claims.

Claims

A liquid crystal display panel, which includes:

The first substrate includes a stacked first substrate, a driving circuit layer and pixel electrodes, the first substrate has a conductive electrode formed in a sealant area, and the sealant area is arranged around the display area;

A second substrate is arranged opposite to the first substrate, and in a direction close to the first substrate, the second substrate includes a second substrate, a black matrix, and a common electrode that are stacked and arranged;

An insulating member arranged on a side of the common electrode close to the first substrate and located in the frame rubber area, the insulating member covering the common electrode;

Filling glue, arranged between the first substrate and the second substrate, and located in the frame glue area;

The conductive member is arranged on the side surface of the liquid crystal display panel, and both ends of the conductive member are respectively connected to the side surface of the common electrode and the side surface of the conducting electrode.
8. The liquid crystal display panel of claim 1, wherein the conductive member is at least one of a silver conductive film or a gold conductive film.
7. The liquid crystal display panel of claim 1, wherein the liquid crystal display panel further comprises a supporting column disposed on a side of the second substrate close to the first substrate, and in the display area, the supporting column Corresponding to the arrangement of the black matrix, the supporting pillars form the insulating member in the sealant area.
8. The liquid crystal display panel of claim 1, wherein the liquid crystal display panel further comprises a supporting column disposed on a side of the second substrate close to the first substrate, and the supporting column is located in the display area, And corresponding to the black matrix arrangement, the material of the insulating member is different from the material of the supporting column.
The liquid crystal display panel of claim 1, wherein the first substrate is formed with a plurality of conductive electrodes, the plurality of conductive electrodes are arranged at intervals in the sealant area, and the number of the conductive members And the arrangement positions on the side of the liquid crystal display panel correspond to the conductive electrodes one by one.
7. The liquid crystal display panel of claim 5, wherein the width of the conductive member is greater than or equal to the width of the side surface of the conductive electrode.
8. The liquid crystal display panel of claim 1, wherein the first substrate further comprises a color resist layer, and the color resist layer is formed between the driving circuit layer and the pixel electrode.
The liquid crystal display panel of claim 1, wherein the second substrate further comprises a color resist layer, the color resist layer and the black matrix are formed on one side of the second substrate, and the common electrode covers The color resist layer and the black matrix.
A method for preparing a liquid crystal display panel, which includes:

A first substrate is prepared. The first substrate includes a first substrate, a driving circuit layer, and a pixel electrode that are stacked, and a conductive electrode is formed in a sealant area of the first substrate, and the sealant area surrounds the display area. set up;

Preparing a second substrate, the second substrate including a second substrate, a black matrix, and a common electrode that are stacked and arranged;

Preparing an insulating member on the common electrode, the insulating member being located in the frame rubber area and covering the common electrode;

Coating a filler between the first substrate and the second substrate, the filler is located in the frame rubber area, and the first substrate and the second substrate are boxed together;

A conductive member is prepared on the side surface of the liquid crystal display panel, and both ends of the conductive member are respectively connected to the side surface of the common electrode and the side surface of the conducting electrode.
9. The method for manufacturing a liquid crystal display panel according to claim 9, wherein the first substrate is prepared, and the first substrate includes a first substrate, a driving circuit layer, and a pixel electrode that are stacked on the first substrate. A conductive electrode is formed in the frame rubber area, and the step of setting the frame rubber area around the display area further includes: forming a connecting electrode in an edge area of the first substrate, and the edge area is located outside the frame rubber area .
10. The method for manufacturing a liquid crystal display panel according to claim 10, wherein said filling glue is applied between said first substrate and said second substrate, and said filling glue is located in said frame glue area, and The step of arranging the first substrate and the second substrate into a box further includes: coating a gold ball on the edge area of the second substrate, the gold ball corresponding to the position of the connection electrode.
11. The method for manufacturing a liquid crystal display panel according to claim 11, wherein the filling glue is applied between the first substrate and the second substrate, and the filling glue is located in the frame glue area, and After the step of arranging the box between the first substrate and the second substrate, the method further includes:

Performing a lighting test through the connecting electrode;

After the test is completed, the parts in the edge area are cut off.
12. The method for manufacturing a liquid crystal display panel according to claim 12, wherein after the test is completed, after the step of cutting off the components in the edge area, the method further comprises: polishing the cut surface.
9. The method for manufacturing a liquid crystal display panel according to claim 9, wherein the conductive member is prepared on the side of the liquid crystal display panel, and both ends of the conductive member are connected to the side surface of the common electrode and the conductive electrode respectively. The step of side connection includes: preparing at least one of a silver conductive film or a gold conductive film on the side of the liquid crystal display panel.
9. The method for manufacturing a liquid crystal display panel according to claim 9, wherein the step of preparing an insulating member on the common electrode, the insulating member being located in the sealant area and covering the common electrode, comprises : A supporting column is formed on the side of the second substrate close to the first substrate, in the display area, the supporting column is arranged corresponding to the black matrix, and in the sealant area, the supporting column is formed The insulating member.
2. The method of manufacturing a liquid crystal display panel according to claim 1, wherein the step of preparing an insulating member on the common electrode, the insulating member being located in the frame compound area and covering the common electrode, comprises : A support column is formed on the side of the second substrate close to the first substrate, the support column is located in the display area and is arranged corresponding to the black matrix, and the material of the insulating member is the same as the material of the support column different.
9. The method for manufacturing a liquid crystal display panel according to claim 9, wherein the conductive member is prepared on the side of the liquid crystal display panel, and both ends of the conductive member are connected to the side surface of the common electrode and the conductive electrode respectively. The side connection step includes: forming a plurality of conductive electrodes on the first substrate, the plurality of conductive electrodes are arranged at intervals in the sealant area, and a conductive member is prepared on the side of the liquid crystal display panel The number of the conductive members and the positions on the sides of the liquid crystal display panel correspond to the conductive electrodes in a one-to-one correspondence.
The method for manufacturing a liquid crystal display panel according to claim 17, wherein the conductive member is prepared on the side of the liquid crystal display panel, the number of the conductive member and the arrangement position on the side of the liquid crystal display panel are the same as the conductive member. The step of one-to-one correspondence of the through electrodes includes: preparing a conductive member on the side of the liquid crystal display panel, and the width of the conductive member is greater than or equal to the width of the side of the conductive electrode.
9. The method for manufacturing a liquid crystal display panel according to claim 9, wherein the first substrate is prepared, and the first substrate includes a first substrate, a driving circuit layer, and a pixel electrode that are stacked on top of each other. Inside, the step of forming a conductive electrode on the first substrate further includes: preparing a color resist layer in the first substrate, the color resist layer being formed between the driving circuit layer and the pixel electrode.
9. The method for manufacturing a liquid crystal display panel according to claim 9, wherein the preparing the second substrate, the second substrate comprising the step of stacking the second substrate, the black matrix and the common electrode, further comprising: A color resist layer is prepared in the second substrate, the color resist layer and the black matrix are formed on one side of the second substrate, and the common electrode covers the color resist layer and the black matrix.