JPH079516B2 - Liquid crystal display element manufacturing method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a film type liquid crystal display device using a film instead of a glass substrate in order to further reduce the thickness of a general liquid crystal panel.

2. Description of the Related Art Generally, as shown in the sectional view of FIG. 2, two transparent electrodes 1, 2'are formed on a transparent electrode 1, 2'in a desired pattern, and two films 3, 3'with patterned electrodes Sealant 4
Then, the liquid crystal 5 is injected into the inside to form a cell. Then, polarizing plates 6 and 6'are provided on both sides thereof, and if necessary, one polarizing plate 6'uses a reflective polarizing plate having an Al reflecting plate. Here, as for the portion corresponding to the inside of the cell of the electrode pattern 2, 2 ', a segment, a pattern, a dot, etc. are selectively used according to need, but in each case, the extraction electrode 7 is formed in a terminal shape, and a connection terminal or a zebra rubber connector is formed. The connecting film is cut to expose the extraction electrode 7 as shown in FIG.

Problems to be Solved by the Invention In this case, the opposing film 3 is cut and removed at the XX ′ plane, but a thin film of about 25 to 100 μ is cut without damaging the extraction electrode portion 7 therebelow. It was technically difficult to cut only the film 3, and there was a problem in terms of manufacturing yield and reliability, and there was no definitive method.

The present invention is intended to provide a method for manufacturing a liquid crystal display device capable of solving such problems.

Means for Solving the Problems A liquid crystal display device of the present invention is a film-like liquid crystal display device in which liquid crystal is sandwiched between first and second films having patterned electrodes, and a peripheral portion is fixed by an adhesive layer. Of the first film, wherein the adhesive layer is arranged to the outside of the cut end surface of the first film.

Action Since the adhesive layer is present below the cut end surface of the first film, only the film can be cut without damaging the extraction electrode portion.

EXAMPLE FIG. 1 is a sectional view of a liquid crystal display element according to an example of the present invention. In the figure, the same numbers as in FIG. 2 indicate the same parts.

As described above, in the prior art, the sealing resin is formed so as not to protrude outside the cut surface as shown in FIG.
There was a lot of possibility that it would be damaged. In view of this, in this embodiment, as shown in FIG. 1, the seal resin adhesive 4 is formed so as to project outside the cut surface to prevent the lead electrode 7 from directly touching and protecting it. In this way, when a large number of panels are collectively formed on a large plate and are cut and separated, a part of the film 3 with a transparent electrode facing the adjacent panel is in contact with this protruding portion, and therefore, it is adhered and cut. There is a fear that it will be difficult to be divided. Therefore, it is sufficient for the area of the protruding portion to have a small width that serves as a protective layer at the time of cutting, and it is sufficient to select conditions that allow easy peeling and division without adhesive strength to prevent division.

(Example 1) A transparent electrode 2 made of In ₂ O ₃ on a PET film 1, 1 ′ having a thickness of 100 μ,
2'is formed in a segment shape, and a terminal electrode is formed as the extraction electrode 7 from a part thereof. These were screen-printed using an epoxy adhesive 4 with a width of 2.5 mm and leaving a liquid crystal injection port in a part so that the sealing resin layer 4 was formed to the outside of the cut portion by 0.2 mm. 3'is attached and pressure-bonded, and the sealing resin is heated and cured, then the liquid crystal 5
Inject and seal. This is cut and divided up to the thickness of the film 3 by a cutter along the cutting plane XX ′. In this case, the seal adhesive layer 4 serves as a protective layer for the thin film transparent electrode made of In ₂ O ₃ , and can protect the electrode surface from damage and prevent defects due to disconnection.

Effect of the Invention As described above, the width of the adhesive layer is made slightly wider than that of the conventional one, and only by forming it to the outside of the cut surface, it acts as a protective layer at the time of cutting, and damages the transparent electrode for extraction Hindering, the manufacturing yield and reliability are greatly improved. In addition, productivity can be improved because there is no need to perform careful work as in the past.

[Brief description of drawings]

1 and 2 are cross-sectional views of a conventional example of the present invention. 1,1 '... Transparent film, 2,2' ... Transparent electrode, 4 ... Adhesive, 5 ... Liquid crystal, 6,6 '... Polarizing plate, 7 ... Extractor electrode.

Claims (1)

[Claims] 1. A liquid crystal is sandwiched between a first film and a second film having a patterned electrode, and a peripheral portion thereof is fixed by an adhesive layer, and a patterned transparent electrode of the second film cuts the first film. In the method for producing a film-like liquid crystal display device having a lead electrode arranged outside the end face,
By arranging the adhesive layer on the outer side of the cut end face and on the inner side of the lead electrode of the second film, the second film lead electrode below the cut end face is protected and the first film is cut. A method for manufacturing a liquid crystal display element, comprising: