JPS61163319A - Production of liquid crystal panel - Google Patents

Abstract

PURPOSE:To produce easily a liquid crystal panel having an intricate pattern by stages for coating a photosetting resin on a substrate, superposing the 2nd substrate thereon, irradiating light thereon, discharging the uncured resin through an aperture and injecting a liquid crystal through the aperture. CONSTITUTION:The photosetting resin 2 is coated on the transparent substrate 1 except part of the aperture and after the 2nd transparent substrate 3 is superposed thereon, the irradiating light 4 is irradiated thereon to cure the resin. The uncured resin is then discharged by vacuum suction through the aperture and thereafter the liquid crystal 6 is injected through the aperture and the aperture is sealed. The easy formation of the fine line-like adhesive agent pattern is thus made possible without manufacturing a printing plate and the intricate display panel is obtd. by combining such pattern with an electrode pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a panel for a liquid crystal display.

(Prior Art) A typical conventional method of manufacturing a liquid crystal panel is shown in Fig. 2.
In FIG. 2, 21 is the first substrate, 22 is the adhesive, and 23 is the first substrate.
24 is an injection port, 24 is a second substrate, and 25 is a sealing resin.

First, as shown in FIG. 2(a), an adhesive 22 is printed on a transparent substrate 21. The commonly used method is
Printed using a stainless steel mesh screen. Next, the second substrate 24 is bonded together as shown in FIG. 2(b). The cut in the adhesive will serve as the injection port for the liquid crystal. In this state, as shown in FIG. 2(c), liquid crystal is injected and sealed with sealing resin z5.

(Problems to be Solved by the Invention) In the conventional method, a screen plate is required in order to print adhesive, and the screen plate must be changed every time one dimension or shape is changed, and the screen plate must be changed each time one dimension or shape is changed. I couldn't do it.

Furthermore, although it was possible to achieve high printing accuracy, there was a drawback that the adhesive spread when bonding two substrates together.

An object of the present invention is to solve these drawbacks, and to provide a manufacturing method that eliminates the spread of adhesive and can easily form even complex patterns.

(Means for Solving the Problem) In order to solve this problem, the method for manufacturing a liquid crystal panel of the present invention includes applying a liquid photocurable resin to at least the outer peripheral portion of the first transparent substrate; , a step of overlapping a second transparent substrate on the first transparent substrate, a step of irradiating light to a required portion except for some openings to cure the photocurable resin, and a step of curing the photocurable resin; This method includes a step of sucking out more uncured photocurable resin, and a step of injecting liquid crystal through the opening and then sealing the opening.

(Function) By using a narrow light beam, the manufacturing method of the present invention allows for arbitrary sealing patterns to be drawn, and also when it is necessary to align two substrates for light irradiation after overlapping them. It is valid.

(Example) FIG. 1 is a partial sectional view of a manufacturing process flowchart according to an example of the present invention. In the figure, 1 is a first transparent substrate, 2 is a photocurable resin, 3 is a second transparent substrate, 4 is an irradiation light, 5 is a sealing part, and 6 is a liquid crystal.

An embodiment of the present invention will be described based on FIG.

As shown in the same figure (a), a photocurable resin 2 is placed on a transparent substrate 1.
Apply to a thickness of about 10 μm. If necessary, a means for regulating the gap may be provided in advance.Next, as shown in FIG. 6(b), the second substrates 3 are overlapped and aligned. In that state.

As shown in FIG. 4C, the photocurable resin 2 is cured by irradiating the irradiation light 4. Thereafter, the uncured photocurable resin flows out by vacuum suction from the injection port, and then liquid crystal 6 is injected and sealed as shown in FIG. 2(d).

In this case, if necessary, it is also possible to provide a hardened portion at a predetermined location to regulate the gap at the same time in the process shown in FIG. 1(C).

(Effects of the Invention) According to the present invention, the adhesive pattern that defines the liquid crystal injection area can be formed without making a screen printing plate, and can be made into an extremely thin line. If a narrower light beam is used, it can be formed into any shape, so if it is combined with an electrode pattern, it has the effect of creating a more complex display panel.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view illustrating the manufacturing process of a liquid crystal panel according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating the manufacturing process of a conventional liquid crystal panel. DESCRIPTION OF SYMBOLS 1... First transparent substrate, 2... Photocurable resin, 3...
...Second transparent substrate, 4...Irradiation light, 5...Seal portion. 6...Liquid crystal. Patent applicant Matsushita Electric Industrial Co., Ltd. Figure 1

Claims (1)

[Claims] After applying a liquid photocurable resin on at least the outer peripheral portion of the first transparent substrate, overlapping the second transparent substrate on the first transparent substrate, the step of applying a liquid photocurable resin to the first transparent substrate, except for some openings; A step of irradiating the photocurable resin with light to cure the photocurable resin, a step of sucking out the uncured photocurable resin from the opening, a step of injecting liquid crystal through the opening and then sealing the opening. A method for manufacturing a liquid crystal panel.