WO2020062443A1

WO2020062443A1 - Liquid crystal display panel and manufacturing method therefor and liquid crystal display

Info

Publication number: WO2020062443A1
Application number: PCT/CN2018/113887
Authority: WO
Inventors: 陈静
Original assignee: 深圳市华星光电半导体显示技术有限公司
Priority date: 2018-09-28
Filing date: 2018-11-05
Publication date: 2020-04-02
Also published as: CN109116620A

Abstract

A liquid crystal display panel (100) and a manufacturing method therefor and a liquid crystal display. The liquid crystal display panel (100) comprises a color film substrate (110) which is a light-transmitting substrate; an array substrate (120) opposite to and spaced apart from the color film substrate (110); a sealant (130) provided between the color film substrate (110) and the array substrate (120) to connect the color film substrate (110) and the array substrate (120); and a shading layer (140) provided at a side of the color film substrate (110) away from the array substrate (120). The projection of the shading layer (140) in the vertical direction covers the sealant (130). The shading layer (140) is made of an electrochromic film material. When the shading layer (140) is not powered up, the shading layer (140) is transparent. When the shading layer (140) is powered up, the shading layer (140) is black.

Description

Liquid crystal display panel, manufacturing method thereof, and liquid crystal display

Technical field

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

Background technique

Liquid crystal displays (LCDs for short) are a widely used flat panel display, which mainly uses a liquid crystal switch to modulate the light field intensity of the backlight source to achieve screen display. In order to achieve a better display effect, it is necessary to design a narrow border.

For the narrow frame design, the current frame sealant is generally cured by illuminating the array substrate side of the liquid crystal display panel, such as ultraviolet light, which passes through the gap between the traces on the edge of the array substrate to the seal. The sealant to cure the sealant.

technical problem

In order to ensure the curing efficiency of ultraviolet light, the traces on one side of the array substrate must be designed in a mesh or hollow shape, so that the number of circuit elements arranged in the limited space of the array substrate is reduced, and the required area of the traces is set The increase makes it impossible to effectively realize a narrow frame design, even reduces the curing rate of the frame sealant, and causes problems such as uneven brightness around the liquid crystal display. In view of this, it is necessary to provide a new liquid crystal display panel to solve the above problems.

Technical solutions

An object of the present invention is to provide a liquid crystal display panel, which comprises adding a light-shielding layer made of an electroluminescent film material between a first polarizer and a liquid crystal cell, and utilizing characteristics of an electrochromic film material ( The color-changing film is transparent when power is not applied) to realize the ultraviolet light from the color film substrate side toward the frame sealant until the frame sealant is cured, and it can ensure that the array substrate has sufficient space for routing and circuit components during design, so that Further, the frame for blocking the non-display area in the liquid crystal display can be correspondingly narrower. In addition, a light-shielding layer made of an electroluminescent film material (which is black when powered on) can effectively prevent the backlight from passing through the liquid crystal cell.

According to a first aspect of the present invention, a liquid crystal display panel is provided. The liquid crystal display panel includes: a color film substrate, the color film substrate is a light-transmitting substrate; an array substrate, the array substrate and the color substrate; The film substrates are disposed at a relative interval; a frame sealant is disposed between the color film substrate and the array substrate to connect the color film substrate and the array substrate; the liquid crystal display panel further includes: A light-shielding layer is disposed on a side of the color filter substrate facing away from the array substrate, and the projection of the light-shielding layer in a vertical direction covers the frame sealant; wherein the light-shielding layer is formed by The electrochromic film is made of a material; when the light shielding layer is not powered, the light shielding layer is transparent; when the light shielding layer is powered, the light shielding layer is black.

In an embodiment of the present invention, the liquid crystal display panel further includes a first polarizer, the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate, and the light shielding layer And disposed between the first polarizer and the color filter substrate.

In an embodiment of the present invention, the liquid crystal display panel further includes a first polarizer, the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate, and the light shielding layer It is disposed inside the first polarizer.

In an embodiment of the present invention, the liquid crystal display panel further includes a first polarizer, the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate, and the light shielding layer It is disposed on a side of the first polarizer facing away from the color filter substrate.

According to a second aspect of the present invention, there is also provided a liquid crystal display including the above-mentioned liquid crystal display panel.

According to a third aspect of the present invention, there is also provided a method for manufacturing a liquid crystal display panel. The method includes the following steps: (a) setting a frame sealant between a color film substrate and an array substrate; (b) The side of the film substrate facing away from the array substrate is irradiated with ultraviolet light toward the frame sealant until the frame sealant is cured, so that the color filter substrate and the array substrate are fixedly connected; (c) a light shielding layer is provided, The light-shielding layer is disposed on a side of the color filter substrate facing away from the array substrate. The projection of the light-shielding layer in a vertical direction covers the frame sealant. The light-shielding layer is made of an electrochromic film material. When the light-shielding layer is not powered, the light-shielding layer is transparent; when the light-shielding layer is powered, the light-shielding layer is black.

In an embodiment of the present invention, the manufacturing method further includes: in step (a), a black matrix is provided on a surface of the color filter substrate facing the array substrate.

In an embodiment of the present invention, the liquid crystal display panel further includes a first polarizer, and the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate. The manufacturing method further includes: The method includes: in step (c), firstly setting the light shielding layer on the color filter substrate, and then covering the color film substrate on which the light shielding layer is provided with a first polarizer.

In an embodiment of the present invention, the liquid crystal display panel further includes a first polarizer, and the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate. The manufacturing method further includes: The method includes: in step (c), firstly setting the light shielding layer on the first polarizer, and then setting the first polarizer on the color filter substrate.

In an embodiment of the present invention, the liquid crystal display panel further includes a first polarizer, and the manufacturing method further includes: in step (c), the light shielding layer is disposed inside the first polarizer.

Beneficial effect

The advantage of the present invention is that the liquid crystal display panel adds a light-shielding layer made of an electroluminescent film material between the first polarizer and the liquid crystal cell, and utilizes the characteristics of the electrochromic film material (not The color-changing film is transparent when power is applied) to realize that the ultraviolet light can be smoothly irradiated to the frame sealant from one side of the color film substrate to be cured, thereby ensuring that the array substrate has sufficient space for routing and circuit components during design. In addition, the light-shielding layer of the liquid crystal display panel covers the corresponding position of the frame sealant, and the backlight cannot be emitted therefrom, thereby not affecting the display effect of the manufactured liquid crystal display. In addition, since the backlight cannot be emitted from the position of the frame sealant, the frame of the liquid crystal display can be set to be narrower accordingly.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present invention more clearly, the drawings used in the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

1 is a schematic structural diagram of a liquid crystal display panel in a first embodiment of the present invention;

2 is a schematic structural diagram of a liquid crystal display panel in a second embodiment of the present invention;

3 is a schematic structural diagram of a liquid crystal display panel in a third embodiment of the present invention;

4 is a schematic structural diagram of a liquid crystal display panel in a fourth embodiment of the present invention;

5 is a schematic structural diagram of a liquid crystal display in a fifth embodiment of the present invention;

FIG. 6 is a flowchart of steps in a method for manufacturing a liquid crystal display panel in a sixth embodiment of the present invention.

Embodiments of the invention

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall into the protection scope of the present invention.

The terms "first", "second", "third", etc. (if present) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order Or in order. It should be understood that the objects so described are interchangeable under appropriate circumstances. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusion.

In this patent document, the drawings discussed below and the embodiments used to describe the principles of the present disclosure are for illustration purposes only and should not be construed as limiting the scope of the present disclosure. Those skilled in the art will understand that the principles of the present invention may be implemented in any suitably arranged system. Exemplary embodiments will be explained in detail, and examples of the embodiments are shown in the drawings. In addition, a terminal according to an exemplary embodiment will be described in detail with reference to the accompanying drawings. The same reference numbers in the drawings refer to the same elements.

The terms used in the description of the present invention are only used to describe specific embodiments and are not intended to show the concept of the present invention. Unless the context clearly indicates a different meaning, expressions used in the singular encompass the expression in the plural. In the description of the present invention, it should be understood that terms such as "including," "having," and "containing" are intended to indicate the possibility of a feature, number, step, action, or combination thereof disclosed in the present description, and are not intended Excludes the possibility that one or more other features, numbers, steps, actions, or a combination thereof may be present or may be added. The same reference numerals in the drawings refer to the same parts.

An embodiment of the present invention provides a liquid crystal display panel. Each will be described in detail below.

1 to 4 schematically show the structure of a liquid crystal display panel of the present invention.

The liquid crystal display panel 100 includes a color filter substrate 110, an array substrate 120, and a frame sealant 130. The color filter substrate 110 is a light-transmitting substrate, and the array substrate 120 and the color filter substrate 110 are spaced from each other. The frame sealant 130 is disposed between the color filter substrate 110 and the array substrate 120 to connect the color filter substrate 110 and the array substrate 120. The color filter substrate 110, the array substrate 120 and the frame sealant 130 together form a sealed liquid crystal cell 180. A display area is provided in the liquid crystal cell 180. The light incident from the array substrate 120 into the liquid crystal cell 180 can pass through the display area and can be converted into light of a desired color and brightness. Shoot out. The structure of the display area described herein is known and will not be repeated here. The structure of the non-display area of the liquid crystal display panel 100 is further described below. Here, the non-display area refers to the frame sealant 130 and the surrounding area. The frame sealant 130 is usually transparent, so light can pass through it directly. Generally, the backlight is incident from one side of the array substrate 120 and is converted into light of a desired color and brightness after passing through the display area. The backlight also passes through the portion where the frame sealant 130 is provided and is directly emitted from one side of the color filter substrate 110. At this time, the emitted backlight may interfere with the light emitted from the display area, thereby causing a light mixing phenomenon, reducing the color contrast of the light emitted from the liquid crystal cell 180, and reducing the sharpness and vividness of the displayed image. In order to prevent the light mixing phenomenon, a light shielding layer 140 is provided on the color film substrate 110 of the liquid crystal display panel 100 of the present invention facing away from the frame sealant 130. The light shielding layer 140 is configured so that its projection in the vertical direction can completely Covering frame sealant 130. And the light shielding layer 140 and the liquid crystal cell 180 are accurately aligned. In this way, after the backlight passes through the frame sealant 130, it will be blocked by the light-shielding layer 140 without penetrating beyond the liquid crystal cell 180, preventing the backlight passing through the frame sealant 130 and the display area from passing through. Light that requires color and brightness is mixed. In this way, by providing the light shielding layer 140, the backlight can be prevented from leaking from the frame sealant 130, the color purity of the light passing through the liquid crystal cell 180 is improved, and the display contrast is improved, thereby further improving the display effect of the liquid crystal display.

The effective color-changing portion of the light-shielding layer 140 according to the present invention is disposed in the black matrix region of the outer frame of the liquid crystal cell 180, and the corresponding color filter substrate 110 is not coated with the black matrix color layer in the peripheral region of the liquid crystal cell 180. The light shielding layer 140 is made of an electrochromic film material. The electrochromic film refers to a stable and reversible color change of an optical property of a material under an external electric field. Appears as a reversible change in color and transparency. Its working principle is that the electrochromic film material undergoes an electrochemical oxidation-reduction reaction under the action of an external electric field, gaining and losing electrons, so that the color of the electrochromic film material changes. When the electrochromic film is not powered, the electrochromic film is transparent; when the electrochromic film is powered, the electrochromic film is black. Therefore, in this embodiment, when the light-shielding layer 140 is not powered on, the light-shielding layer 140 is transparent to achieve curing of the frame sealant 130; when the light-shielding layer 140 is powered on, The light shielding layer 140 is black to provide a light shielding effect.

In view of the fact that the frame sealant 130 is usually cured by colloid, after the color film substrate 110, the frame sealant 130, and the array substrate 120 are laminated, the characteristics of the electrochromic film material are used to apply the electrochromic film. When the material is not electrified, the electrochromic film material is transparent. Therefore, the side of the color film substrate 110 is irradiated with ultraviolet light to cure the frame sealant 130, thereby avoiding the problems such as in the prior art. Since the black matrix is coated on the peripheral area of the color filter substrate 110 side, it is impossible to inject ultraviolet light from the side where the color filter substrate 110 is located and only the ultraviolet light can be emitted from the side where the array substrate 120 is located. It can ensure that the array substrate 120 has sufficient space for routing and circuit components during design, and the frame for shielding the non-display area can be set to be narrower accordingly. In addition, in order to ensure the curing of the frame sealant 130, the light-shielding layer 140 covering the frame sealant 130 may be attached to the color film substrate 110 after the frame sealant 130 is cured, and the light-shielding layer 140 is disposed on the color film substrate. 110 is facing away from one side of the frame sealant 130.

The projection of the light shielding layer 140 on the inner surface of the color filter substrate 110 covers the entire frame sealant 130. By providing the light shielding layer 140 in this way, it is possible to effectively prevent the backlight from passing through the position corresponding to the frame sealant 130 and mixing with the light emitted from the display area. In addition, due to the material characteristics of the light-shielding layer 140, the curing of the frame-sealing adhesive 130 is not hindered, and the curing rate of the frame-sealing adhesive 130 can also be reliably ensured.

As shown in FIG. 1 to FIG. 4, the light-shielding layer 140 may be disposed on a side of the color filter substrate 110 facing away from the frame sealant 130 in various forms.

Fig. 1 shows a first embodiment of the present invention. In this embodiment, the light shielding layer 140 is directly adhered to the color filter substrate 110 after the frame sealant 130 is cured.

As shown in FIGS. 2 to 4, the liquid crystal display panel 100 preferably further includes a first polarizer 171 disposed on an outer surface of the color filter substrate 110. It should be noted that the inner surface described herein is the surface facing the array substrate 120 or the frame sealant 130, and the outer surface is the surface facing away from the array substrate 120 or the frame sealant 130.

Fig. 2 shows a second embodiment of the present invention. In this embodiment, the light shielding layer 140 is first disposed on a side of the first polarizer 171 facing the color filter substrate 110. After the frame sealant 130 is cured, the first polarizer 171 provided with the light-shielding layer 140 is disposed on the color filter substrate 110, so that the light-shielding layer 140 that has been powered on and changed color can effectively prevent the backlight from being provided with the frame sealant. 130 shots. At this time, the light shielding layer 140 is disposed between the color filter substrate 110 and the first polarizer 171. Such a light-shielding layer 140 has a convenient processing method, low manufacturing cost, and good light-shielding effect.

In addition, a black matrix 150 is disposed on the inner surface of the color filter substrate 110, and the black matrix 150 does not extend to the position of the frame sealant 130 to ensure the curing of the frame sealant 130 smoothly. The black matrix 150 extends into the display area to separate color resistance (151, 152, 153) in the display area. The setting of the black matrix 150 is well known to those skilled in the art, and will not be repeated here.

Due to processing technology, there is usually a gap between the frame sealant 130 and the black matrix 150. The light shielding layer 140 can be set so that the projection on the inner surface can cover the gap structure, or more preferably, the light shielding layer 140 and the black matrix 150 overlap each other to further prevent the backlight from passing through the liquid crystal cell 180. Of course, the overlapping portion of the light shielding layer 140 and the black matrix 150 can be set smaller, thereby reducing the manufacturing cost of the liquid crystal display panel 100.

Fig. 3 shows a third embodiment of the present invention. In this embodiment, the light shielding layer 140 is embedded inside the first polarizer 171 when it is manufactured. After the frame sealant 130 is cured, the first polarizer 171 embedded with the light shielding layer 140 is disposed on the color filter substrate 110, and the light shielding layer 140 can effectively prevent the backlight from passing through. Such a light-shielding layer 140 has a convenient processing method, low manufacturing cost, and good light-shielding effect. In addition, the light shielding layer 140 provided inside the first polarizer 171 has high stability, which can further ensure the display effect of the liquid crystal display.

Fig. 4 shows a fourth embodiment of the present invention. In this embodiment, the light shielding layer 140 is attached to a side of the first polarizer 171 facing away from the color filter substrate 110. After the frame sealant 130 is cured, the first polarizer 171 is set on the color filter substrate 110. After the first polarizer 171 is disposed on the color filter substrate 110, the light shielding layer 140 may be processed on the first polarizer 171. The processing method of the light shielding layer 140 is very convenient, and the manufacturing cost is low.

The light-shielding layer 140 in the above four embodiments can be easily processed on the color filter substrate 110 or the first polarizer 171, which facilitates the processing of the liquid crystal display panel 100, reduces the manufacturing process difficulty of the liquid crystal display panel 100, and improves This improves the production efficiency of the liquid crystal display panel 100. In addition, in the third embodiment, the light-shielding layer 140 is embedded in the first polarizer 171, so that it is not easy to deviate, and the backlight further ensures that the light-shielding layer 140 can effectively intercept the light-shielding layer 140 without passing through the liquid crystal cell 180 and from The light emitted from the display area is mixed.

The light-shielding layer 140 may preferably be set larger, so that the area of the light-shielding layer 140 projected on the inner surface is larger than the area of the frame sealant 130 projected on the inner surface. In this way, the light shielding layer 140 can not only shield the backlight at the frame sealant 130, but also shield the backlight around the frame sealant 130, further eliminating the possibility that the backlight passes through the liquid crystal box 180, thereby further improving the display of the liquid crystal display. effect.

In addition, as shown in FIGS. 2 to 4, a second polarizer 172 is disposed on a side of the array substrate 120 facing away from the color filter substrate 110. The material of the second polarizer 172 is the same as that of the first polarizer 171.

In addition, as shown in FIGS. 1 to 4, a metal layer 160 is provided on the array substrate 120, and the metal layer 160 is a metal wiring to ensure the normal electrical connection of the liquid crystal cell 180. The metal layer 160 is opaque. Therefore, the metal layer 160 is disposed at the connection between the array substrate 120 and the frame sealant 130, which can ensure the transmittance of the display area, thereby ensuring the brightness of the light passing through the liquid crystal cell 180, and further Ensure the display effect of the LCD monitor. The metal layer 160 may have a complete surface, and there is no structure such as a hole or a gap. In this way, the metal layer 160 is easy to process and the processing cost is low, thereby further reducing the processing difficulty of the liquid crystal display panel 100 and the processing cost of the liquid crystal display panel 100. The structure of the array substrate 120 is well known to those skilled in the art, and is not repeated here.

Since the frame sealant 130 and its surroundings are not easy to leak light, the non-display area can be made smaller. For a liquid crystal display using such a liquid crystal display panel 100, a frame for shielding such a non-display area can be set to be narrower accordingly.

In addition, an integrated gate driving circuit may be used in the liquid crystal display panel 100. At this time, the metal layer 160 may include an integrated gate driving circuit, so that the frame of the liquid crystal display is narrower. The structure and setting method of the integrated gate driving circuit are well known to those skilled in the art, and will not be repeated here.

Referring to FIG. 5, the present invention further provides a liquid crystal display, which includes the liquid crystal display panel 100 described above. The specific structure of the liquid crystal display panel 100 is as described above, and is not repeated here.

Referring to FIG. 6, the present invention further provides a method for manufacturing a liquid crystal display panel, wherein the structure of the liquid crystal display panel 100 is as described above.

The method includes the following steps:

Step S610: A frame sealant is set between the color filter substrate and the array substrate.

In this step, a black matrix 150 is disposed on a surface of the color filter substrate 110 facing the array substrate 120.

Step S620: On the side of the color filter substrate facing away from the array substrate, irradiate ultraviolet light toward the frame sealant until the frame sealant is cured, so that the color film substrate is fixedly connected to the array substrate.

Step S630: A light shielding layer is provided. The light shielding layer is disposed on a side of the color filter substrate facing away from the array substrate. The projection of the light shielding layer in a vertical direction covers the frame sealant. The electrochromic film is made of a material; when the light shielding layer is not powered, the light shielding layer is transparent; when the light shielding layer is powered, the light shielding layer is black. The light shielding layer 140 is disposed at a position opposite to the frame sealant 130 so that the projection of the device in the vertical direction can cover the frame sealant 130. That is, the light shielding layer 140 and the liquid crystal cell 180 are accurately aligned. In this way, the backlight passing through the frame sealant 130 can be blocked by the light-shielding layer 140 that is powered on and discolored so that it cannot transmit beyond the color filter substrate 110.

The manufacturing method further includes: in step S630, firstly setting a light shielding layer on the color filter substrate, and then covering the color filter substrate with the first polarizer on the color filter substrate, so that the light shielding layer is disposed on the color filter substrate. On the surface facing away from the array board.

Alternatively, the light shielding layer is first disposed on the first polarizer, and then the first polarizer is disposed on the color filter substrate. In this way, the light shielding layer is disposed on the surface of the first polarizer facing the color filter substrate.

The above-mentioned two ways of setting the light-shielding layer 140 belong to a case where the light-shielding layer 140 is disposed between the first polarizer 171 and the color filter substrate 110.

In other embodiments of the present invention, the manufacturing method further includes: in step S630, the light shielding layer is disposed inside the first polarizer.

The liquid crystal display panel and the manufacturing method thereof include adding a light-shielding layer made of an electroluminescent film material between the first polarizer and the liquid crystal cell, and utilizing the characteristics of the electrochromic film material (discoloration when no power is applied) The film is transparent) to realize that the ultraviolet light can be irradiated from one side of the color film substrate to the frame sealant to be cured, thereby ensuring that the array substrate has sufficient space for routing and circuit components during design. In addition, the light-shielding layer of the liquid crystal display panel covers the corresponding position of the frame sealant, and the backlight cannot be penetrated therefrom, and thus the display effect of the manufactured liquid crystal display is not affected. In addition, since the backlight cannot be emitted from the position of the frame sealant, the frame of the liquid crystal display can be set to be narrower accordingly.

The above is only a preferred embodiment of the present invention. It should be noted that, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made. These improvements and retouches should also be viewed as It is the protection scope of the present invention.

Industrial applicability

The subject matter of this application can be manufactured and used in industry with industrial applicability.

Claims

A liquid crystal display panel includes: a color film substrate, the color film substrate is a light-transmitting substrate; an array substrate, the array substrate and the color film substrate are relatively spaced apart from each other; a frame sealant, and the frame sealant Disposed between the color filter substrate and the array substrate to connect the color filter substrate and the array substrate; wherein the liquid crystal display panel further includes: a light shielding layer, the light shielding layer is disposed on the color film One side of the substrate facing away from the array substrate, the projection of the light shielding layer in a vertical direction covers the frame sealant; the light shielding layer is made of an electrochromic film material; when the light shielding layer is not added When electricity is applied, the light-shielding layer is transparent; when the light-shielding layer is powered, the light-shielding layer is black.
The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel further comprises a first polarizer, the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate, and The light shielding layer is disposed between the first polarizer and the color filter substrate.
The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel further comprises a first polarizer, the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate, and The light shielding layer is disposed inside the first polarizer.
The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel further comprises a first polarizer, the first polarizer is disposed on a side of the color filter substrate facing away from the array substrate, and The light shielding layer is disposed on a side of the first polarizer facing away from the color filter substrate.
A liquid crystal display, wherein the liquid crystal display comprises a liquid crystal display panel according to any one of claims 1 to 4.
A method for manufacturing a liquid crystal display panel is characterized in that it includes the following steps:

(A) Setting a frame sealant between the color filter substrate and the array substrate;

(B) the side of the color filter substrate facing away from the array substrate, irradiating ultraviolet light toward the frame sealant until the frame sealant is cured, so that the color filter substrate and the array substrate are fixed connection;

(C) A light-shielding layer is provided. The light-shielding layer is disposed on a side of the color filter substrate facing away from the array substrate. The projection of the light-shielding layer in a vertical direction covers the frame sealant. The layer is made of an electrochromic film material; when the light shielding layer is not powered, the light shielding layer is transparent; when the light shielding layer is powered, the light shielding layer is black.
The method for manufacturing a liquid crystal display panel according to claim 6, wherein in step (a), further comprising: providing a black matrix on a surface of the color filter substrate facing the array substrate.
The method for manufacturing a liquid crystal display panel according to claim 6, wherein the liquid crystal display panel further comprises a first polarizer, and the first polarizer is disposed on the color filter substrate facing away from the array substrate. On the other side, the manufacturing method further includes: in step (c), firstly setting the light shielding layer on the color filter substrate, and then covering the first polarizer with the light shielding layer provided with the light shielding layer. Color film substrate.
The method for manufacturing a liquid crystal display panel according to claim 6, wherein the liquid crystal display panel further comprises a first polarizer, and the first polarizer is disposed on the color filter substrate facing away from the array substrate. On one side, the manufacturing method further includes: in step (c), firstly setting the light shielding layer on the first polarizer, and then setting the first polarizer on the color filter substrate.
The method for manufacturing a liquid crystal display panel according to claim 6, wherein the liquid crystal display panel further comprises a first polarizer, and the manufacturing method further comprises: in step (c), the light shielding layer is provided Inside the first polarizer.