JPS6169032A - Production for liquid crystal display element - Google Patents

Abstract

PURPOSE:To prevent broken pieces of glass, dust, etc. from sticking onto a glass substrate by forming a peelable protective film on one or both faces of the glass substrate to which a polarizing plate should be stuck and peeling this protective film and sticking the polarizing plate. CONSTITUTION:A peelable protective film 2 is formed on a surface 1a of a glass substrate 1, and this glass substrate 1 is cut to prescribed dimensions and is washed, and the protective film 2 is peeled away. At this time, stuck materials 5 such as glass, dust, fingerprint, etc. after cutting which are stuck to a surface 2a of the protective film 2 and dust 4 stuck to the surface 1a of the glass substrate 1 are removed together with the protective film 2. After the protective film 2 is removed, a polarizing plate 3 is immediately stuck to the surface 1a of the glass substrate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for manufacturing a liquid crystal display element, and more particularly to a process preceding the process of laminating polarizing plates.

(Prior Art) In the conventional manufacturing process of a liquid crystal display element, after dividing into liquid crystal cells, the cell is first cleaned in a predetermined cleaning process.

Furthermore, the polarizing plate was attached after scrubbing off any adhering substances such as glass fragments, I prints, dirt, and dust that were not removed during this cleaning process with a hand towel.

(Problems to be Solved by the Invention) However, if the glass substrate is rubbed with a hand wipe in this manner, the surface condition of the glass substrate after one hand wipe is not uniform, resulting in a lack of reliability. Further, since the surface of the glass substrate is exposed as it is and is not protected in any way, the surface may be damaged during storage or transportation of the glass substrate during the manufacturing stage.

(Means for Solving the Problems) According to the present invention, a removable protective film is formed on one or both surfaces of a glass substrate to which a polarizing plate is pasted.

The present invention relates to a method of manufacturing a liquid crystal display element, in which the protective film is peeled off and glass fragments, dust, etc. are wiped off, and then the polarizing plate is laminated.

(Function) A protective film is formed on the glass substrate in advance, and immediately after this protective film is peeled off and removed, a polarizing plate is pasted to remove glass fragments, fingerprints, and dirt after the glass is divided.

Prevents debris from adhering to the glass substrate.

(Example) An example of the present invention will be described below with reference to the drawings.

FIG. 1 shows a liquid crystal display element according to the present invention in which a protective film 2 formed on the surface of one glass substrate 1 has been peeled off.

The protective film 2 is a film formed by applying a seal glow agent (stripperable paint), and after application, it is removed using a suitable automatic machine (not shown)
It can be peeled off by

FIGS. 2 to 5 show sequentially enlarged views of the surface state of the glass substrate 1 after the protective film 2 is coated and until it is peeled off, and the following description will be given with reference to these drawings.

FIG. 2 illustrates the surface state of the glass substrate 1 before the protective film 2 is applied, and dust 4 is attached to the surface 1a.

Next, after applying the seal glow agent in a μm order, it is dried and hardened to form a protective film 2 (third step
(see figure). and.

After this glass substrate 1 is cut into predetermined dimensions and goes through a normal cleaning process, the protective film 2 is peeled off and removed;
(see Figure 4), at this time, the surface 2 of the protective film 2
Adhesives such as glass, dust, fingerprints, etc. after cutting attached to a 5
Of course, the dust 4 adhering to the surface 1a of the glass substrate is also removed together with the protective film 2. and,
Immediately after removing the protective film 2, a polarizing plate 3 is attached to the surface 1a of the glass substrate 1 (see FIG. 5).

(Effects of the Invention) As described above, according to the present invention, it is possible to prevent glass substrates, dust, fingerprints, etc. that cannot be removed by a cleaning process alone from adhering to the glass substrate after separation, and to form a protective film. Since fine dust and the like adhering to the surface of the previous glass substrate can also be removed when the protective film is peeled off, the manual wiping step that was conventionally performed after the cleaning step can be omitted. moreover.

During the manufacturing stage, the protective film protects the surface of the glass substrate, thereby preventing damage even during storage or movement of the glass substrate.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a liquid crystal display element according to the present invention. 2 to 5 are partially enlarged views for sequentially explaining the steps for forming and peeling off the protective film. 1...Glass substrate 1a...Surface 2...Protective film 3...Polarizing plate (1 person)Figure 2Figure 1Figure 3Figure 5■. , Procedural amendment dated 26///1939

Claims (1)

[Claims] 1) A removable protective film is formed on one or both surfaces of the glass substrate to which the polarizing plate is pasted, and this protective film is peeled off to wipe away glass fragments, dust, etc. before the polarizing plate is pasted. A method for manufacturing a liquid crystal display element, characterized by: