CN116009306A - A frame glue curing method for a liquid crystal display panel conducive to narrow frame design - Google Patents

Abstract

A method for preparing a liquid crystal display panel that is conducive to narrow frame design, comprising: providing a color filter substrate, and an array substrate arranged opposite to it; using a transparent photoresist material to make a matrix in the non-display areas at the four corners of the color filter substrate type micro-convex lens; a reflective layer is coated on the surface of each micro-convex lens, and at the same time, holes are opened on the metal wiring at the corresponding position of the micro-convex lens area on the array substrate, and a sealing frame is formed on the periphery between the color filter substrate and the array substrate; Inject liquid crystal between the color filter substrate and the array substrate, and the area where the liquid crystal is located is the display area; cure the sealing sealant. In the present invention, the openings of the array substrate are reduced to four at the four corners of the panel, and the lens structure on the color filter substrate can transmit light to each area of the frame glue to cure the frame glue, so that the design of the metal wires of the array substrate is simple. It can directly reduce the metal line width, reduce the resistance of peripheral circuits, save space, and achieve narrow borders as much as possible.

Description

A frame glue curing method for a liquid crystal display panel that is beneficial to narrow frame design

technical field

The invention belongs to the technical field of liquid crystal display panels, and specifically refers to a frame glue curing method of a liquid crystal display panel which is beneficial to narrow frame design.

Background technique

The main structure of the liquid crystal display panel is that the color filter substrate and the array substrate are boxed together, with a liquid crystal layer sandwiched between them, and a frame glue is provided around the array substrate and the color filter substrate, which is used to prevent liquid crystal from leaking out and to connect the array substrate and the color filter substrate. The substrates are connected together.

In recent years, narrow bezel liquid crystal display panels have become more and more popular among consumers. The frame in the display panel is getting narrower and narrower. After the array substrate of the display panel and the color filter substrate are boxed together, when the frame glue is cured, in order to meet the needs of the narrow frame, the frame glue is coated on the frame of the color filter substrate Areas are used on black color resists that are light-shielding. When curing the frame glue on the display panel, the frame glue can be cured through exposure from the side of the array substrate where the mask plate is installed. In order to ensure the light transmittance, it is necessary to slit the metal wire that blocks the frame glue. This will lead to narrowing of the metal wires, which affects the resistance of the metal wires and increases the difficulty of designing the array substrate. If the exposure is done from the side of the color filter substrate, in order to ensure the light transmittance, it is necessary to slit the black color resist that covers the frame glue, which will narrow the black color resist and easily lead to light leakage.

The current conventional frame glue curing technology, as shown in Figure 1 and Figure 2, is to apply the frame glue on the color filter substrate, and at the same time, when designing the array substrate, dig holes or slit the metal wires on the edge of the array substrate, the color film The positions corresponding to the holes and slits on the film substrate are coated with black color resist BM to prevent light leakage. UV (ultraviolet) light is irradiated from the side of the array substrate, and the frame glue is cured through holes or slits dug by metal wires. This part of the opening on the array substrate needs to be covered by the black color resist BM, which requires an excessively large display area of the substrate, and the design of the metal lines of the array substrate is complicated, which is not conducive to the panel design with narrow borders.

Contents of the invention

The technical problem to be solved by the present invention is to provide a frame glue curing method for a liquid crystal display panel that is conducive to narrow frame design, which can save space and realize narrow frame as much as possible.

The present invention is achieved like this:

A method for preparing a liquid crystal display panel favorable for narrow frame design, comprising the following steps:

Step S1: providing a color filter substrate and an array substrate opposite to it;

Step S2: using a transparent photoresist material in the non-display area of the four corners of the color filter substrate to make a matrix micro-convex lens;

Step S3: Coating a reflective layer on the surface of each of the micro-convex lenses, and at the same time opening holes on the metal traces corresponding to the area of the micro-convex lenses on the array substrate;

Step S4: forming a sealing sealant around the periphery between the color filter substrate and the array substrate;

Step S5: Inject liquid crystal between the color filter substrate and the array substrate, and the area where the liquid crystal is located is the display area;

Step S6: Curing the sealing sealant.

Further, the step S6 specifically includes:

The UV light enters from the side of the array substrate, passes through the holes opened by the metal wiring, and directs the light to the micro-convex lens area on the color filter substrate;

When the light reaches the area of the micro-convex lens, it is refracted by the lens, and the UV light is transmitted to the surrounding frame glue, so that the frame glue is cured.

Further, the surface of the micro-convex lens is coated with a single layer or multiple layers of the reflective layer.

Further, the reflective layer is made of aluminum oxide, titanium dioxide, niobium oxide, zinc oxide, zirconium dioxide, or titanium dioxide.

The advantage of the present invention is that: the present invention reduces the openings of the array substrate to four at the four corners of the panel, and uses the lens structure on the color filter substrate to transmit light to each area of the sealant to cure the sealant, so that the array substrate The design of the metal wire is simple, you can directly reduce the width of the metal wire, reduce the resistance of the surrounding circuit, and save space; there is no need to slit the black color resistance, and the black color resistance at the edge can be designed narrower, and there will be no light leakage To solve the problem, further save space, and achieve narrow borders as much as possible.

Description of drawings

The present invention will be further described below with reference to the accompanying drawings and embodiments.

FIG. 1 is a longitudinal sectional view of a liquid crystal display panel in the prior art.

FIG. 2 is a transverse cross-sectional view of a liquid crystal display panel in the prior art.

Fig. 3 is a longitudinal sectional view of the liquid crystal display panel of the present invention.

FIG. 4 is a top view of the liquid crystal display panel of the present invention.

FIG. 5 is a partially enlarged schematic diagram of A in FIG. 4 .

Fig. 6 is a schematic diagram of the structure of the micro-convex lens in the present invention.

Fig. 7 is a schematic diagram of the transmission direction of light passing through each micro-convex lens in the present invention.

Fig. 8 is a schematic diagram of the transmission direction of light during curing of the sealant in the present invention.

Reference signs:

100, color film substrate, 101, micro-convex lens 101, 1011, reflective layer, 102, black color resist layer (BM), 200, array substrate, 201, holes on metal wiring, 300, sealant, 400, liquid crystal.

Detailed ways

Please refer to FIG. 3 to FIG. 8 , a method for preparing a liquid crystal display panel that facilitates a narrow frame design includes the following steps:

Step S1: providing a color filter substrate 100 and an array substrate 200 disposed opposite to it;

Step S2: using a transparent photoresist material in the non-display areas of the four corners of the color filter substrate 100 to fabricate matrix micro-convex lenses 101;

Step S3: Coating one or more layers of reflective layer 1011 on the surface of each of the micro-convex lenses 101 (the material of the reflective layer 1011 can be aluminum oxide, titanium dioxide, niobium oxide, zinc oxide, zirconium dioxide, or titanium dioxide ), while opening a hole 201 on the metal wiring at the position corresponding to the micro-convex lens area 101 on the array substrate 200;

Step S4: forming a sealing sealant 300 on the periphery between the color filter substrate 100 and the array substrate 200;

Step S5: inject liquid crystal 400 between the color filter substrate 100 and the array substrate 200, and the area where the liquid crystal is located is the display area;

Step S6: Curing the sealing sealant 300, specifically including:

UV light enters from the side of the array substrate 200, passes through the hole 201 opened by the metal wiring, and directs the light to the micro-convex lens area 101 on the color filter substrate 100;

When the light reaches the micro-convex lens area 101, the UV light is transmitted to the surrounding sealant 300 by the refraction of the lens, so that the sealant 300 is cured.

In the present invention, the openings of the array substrate are reduced to four at the four corners of the panel, and the lens structure on the color filter substrate can transmit light to each area of the frame glue to cure the frame glue, so that the design of the metal wires of the array substrate is simple. It can directly reduce the metal line width, reduce the resistance of the surrounding circuit, and save space; there is no need to slit the black color resistance, and the black color resistance at the edge can be designed to be narrower, and there will be no light leakage problem, further saving space , to achieve narrow borders as much as possible.

The above-mentioned embodiments and drawings do not limit the form and style of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims (4)

1. a kind of preparation method that is beneficial to the liquid crystal display panel of narrow frame design, it is characterized in that: comprise the steps: Step S1: providing a color filter substrate and an array substrate opposite to it; Step S2: using a transparent photoresist material in the non-display area of the four corners of the color filter substrate to make a matrix micro-convex lens; Step S3: Coating a reflective layer on the surface of each of the micro-convex lenses, and at the same time opening holes on the metal traces corresponding to the area of the micro-convex lenses on the array substrate; Step S4: forming a sealing sealant around the periphery between the color filter substrate and the array substrate; Step S5: Inject liquid crystal between the color filter substrate and the array substrate, and the area where the liquid crystal is located is the display area; Step S6: Curing the sealing sealant. 2. a kind of preparation method that is beneficial to the liquid crystal display panel of narrow frame design as claimed in claim 1, is characterized in that: The step S6 specifically includes: The UV light enters from the side of the array substrate, passes through the holes opened by the metal wiring, and directs the light to the micro-convex lens area on the color filter substrate; When the light reaches the area of the micro-convex lens, it is refracted by the lens, and the UV light is transmitted to the surrounding frame glue, so that the frame glue is cured. 3 . The method for preparing a liquid crystal display panel that facilitates narrow frame design according to claim 1 , wherein the surface of the micro-convex lens is coated with a single layer or multiple layers of the light-reflecting layer. 4 . 4. A method for preparing a liquid crystal display panel that is conducive to narrow frame design as claimed in claim 1, wherein the material of the reflective layer is aluminum oxide, titanium dioxide, niobium oxide, zinc oxide, Zirconium, or Titanium Dioxide.

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