JPS58173715A - Production of liquid crystal display panel - Google Patents

Abstract

PURPOSE:To provide a liquid crystal display panel which maintains the spacing between glass substrates with high accuracy by pressing the glass substrates at an uniform pressure overall in plural positions in the stage of pressurizing said substrates and applying fine oscillation to the pressed part. CONSTITUTION:Glass substrates 1, 2 are held in place between sandwiching plates 3, 4, and are set on a base plate 5. A pressing plate 6 is put thereon and is pressed in an arrow direction. Pressing pins 8 in this case are disposed equally over the entire surface of the glass base plate and the springs 11 which energize the pins 8 are adjustable of the energizing force by rotating adjusting stoppers 10. When the plate 6 is finely oscillated at about several tens kHz by a means not shown in the figure, the slight oscillation is transmitted to the pressed part. In this state, the substrates 1, 2 are heated to allow the org. matter to set and the adhesive is completed. The overlap of spacers 7, if any, is eliminated by the fine oscillation and both glass substrates are adhered at the spacing of high accuracy maintained therebetween.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a plurality of spacers that maintain opposite spacing between each other.
This is a method for manufacturing a liquid crystal display panel in which two glass substrates are bonded together with a thermosetting organic material coated on the periphery of each opposing surface.

Background of the Technology Large display devices equipped with this type of liquid crystal display panel have been widely used in recent years, but in the case of large display devices, it is necessary to maintain the spacing between glass substrates with high accuracy (for example, 10±1 μm).

Prior Art and Problems When manufacturing a conventional type of liquid crystal display panel, two glass substrates are spaced apart from each other by a plurality of short spacers such as glass fibers, and a thermosetting film coated around the facing surfaces of each glass substrate is used. After pasting the organic material together, pressure is applied using a heavy cloth, a snap clip, etc., and the adhesive is heated in this state to harden the organic material.

However, in this conventional method, the pressure is applied by placing a weight on the glass substrate or by sandwiching the peripheral parts of both glass substrates with a clip, especially when it comes to large panels. The pressure became uneven, making it difficult to maintain the accuracy of the spacing between the substrates. In addition, the spacers are arranged by dropping something mixed in the liquid onto the glass substrate, rotating the glass substrate at high speed, and distributing it on the glass substrate by centrifugal force, but in this case, the spacers overlap each other. Unfortunately, this also hindered maintaining interval accuracy.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a method for manufacturing a liquid crystal display panel with a round shape that solves the above-mentioned problems and that can maintain a high sugar [K] distance between glass substrates.

Structure of the Invention In order to achieve the above-mentioned object, the present invention applies pressure to the glass substrate at a plurality of locations with equal pressure over the entire surface, and at the same time applies slight vibrations to the wrinkle pressurizing part. It is configured.

□　　Embodiments of the invention The present embodiment will be described below with reference to the drawings.

Figure 1 is a front view showing the state in which pressure is applied to the glass substrates after lamination.In the figure, 1 and 2 are glass substrates, 3
, 4 Welfare clamp plate, 5 Welfare platform, and 6 Hiro pressure plate.

Transparent electrodes are formed on the opposite surfaces of the glass substrates 1 and 20, and a transparent electrode, a chemically stable insulating film, and an alignment film for controlling the alignment of liquid crystal molecules are sequentially formed thereon. The glass substrates 1 and 2 are pasted together as shown in the figure with a thermosetting organic material such as a synthetic resin coated on their periphery, and a short glass fiber having the shape shown in FIG. A plurality of spacers 7 are arranged. This spacer 7 is for ensuring the distance between the glass substrates 1 and 2 during pressurization, and has an outer diameter of about 6 to 10 μm.

The holding plates 5 and 4 are made of glass, metal plates, etc. with good flatness, and have sufficient thickness.

The suppressing plate 6 supports a large number of suppressing pins 8 such that they can move forward and backward in the direction of the arrow shown in FIG. 1 (glass substrate suppressing direction). As shown in detail in the bottom view of FIG. 6, the eight suppressor pins are arranged in a matrix in the vertical and horizontal directions within the glass substrate setting position A indicated by the chain line in the figure. These pressing pins 8
As shown in detail in the figure, the pressing plate 6 is pushed by a spring 11 provided between a hole into which the pressing bin 8 fits and an adjustment stopper 10 screwed into a screw hole 9 provided concentrically. It is designed to be biased in the direction of protruding from.

The bonded glass substrates 1 and 2a are bonded together in the following steps.

That is, the glass substrates 1 and 2 are sandwiched between the holding plates 5 and 4 and set on the base plate 5, and the press plate 6 is placed on top of the press plate 6 so that the position A on the glass substrate side coincides with the periphery of the glass substrate 1. (the first fj!A shows the 0 state) and press the suppression plate 6 in the direction of the arrow.

In this case, the pressing pins 8 are arranged evenly over the entire surface of the glass substrate, and the spring 11 that biases the pressing pin 8 is adjustable by rotating the spring 11 (adjustable force). It is possible to pressurize the glass substrate 1 uniformly and over the entire surface via the suppressor plate 8. When a micro-vibration of several tens of kilograms is applied to the suppressor plate 6 by a means not shown in the figure, the micro-vibration of the plate The pressure is transmitted to the pressure applied by each suppression bottle 8. Next, in this state, the glass substrates 1 and 2 are heated to harden the organic matter and complete the adhesion.

In this way, in the present invention, even if there is an overlap as shown in FIG. Pressure is applied while maintaining the distance between the glass substrates 1 and 2 with high precision.

Effects of the Invention As described above, according to the present invention, the glass substrate can be pressurized uniformly over the entire surface, and even if there are overlapping spacers, the effect is not exerted on the pressurizing part. Since the glass substrates are removed by the microvibration generated, it is possible to bond both glass substrates while maintaining a highly accurate spacing.

[Brief explanation of drawings]

The drawings show an embodiment of the method for manufacturing a liquid crystal display (liquid crystal display) according to the present invention, in which Fig. 1 is a front view showing the glass substrate in a pressurized state, and Fig. 2 is a perspective view showing the overlapping of the spacers. It is a diagram. In the figure, 1 and 2 are glass substrates, 5 and 4 are clamping plates, 5 is a base plate, 6 is a suppressing plate, 7 is a spacer, 8 is a pressing bottle, 9 is a screw hole, 10 is an adjustment stopper, and 11 is a spring. be. Patent Applicant: Fujitsu Limited 11A Fin ± Tamamushiku Gobe (3 others) 111 Figure 1 Figure 3 Figure 4 1511!1

Claims (1)

[Claims] Two glass substrates that are kept at a distance from each other by multiple spacers are pasted together with a thermosetting organic material coated around the opposing surfaces, and both glass substrates are bonded evenly across the entire surface at multiple positions. 1. A method for manufacturing a liquid crystal display panel 0, characterized in that the substrates are heated in a solid state by applying pressure and applying slight vibrations to the skeleton pressurizing part, thereby curing and bonding the organic substance.