JPH0430003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a flexible display element.

Conventionally, when manufacturing flexible display elements in large numbers, after pasting together two upper and lower flexible substrates and going through processes such as encapsulating the display material, the upper and lower substrates are separated at predetermined separation points according to the shape of the flexible display element. By cutting the flexible display elements, a plurality of flexible display elements can be obtained.

In recent years, in order to obtain more flexible display elements from one set of flexible substrates without waste, at least two flexible display elements have been arranged upside down and with their terminal portions facing each other. It can be seen that the upper and lower substrates are pasted together and the upper and lower substrates are laid out at the ends of the terminal portions so that the parts where they are separated do not coincide with each other.

In this case, the upper and lower substrates are partially separated at the end of the terminal portion so that the upper and lower substrates do not coincide with each other, so when cutting the corresponding portion, it is necessary to control the upper and lower substrates so that they do not penetrate through. However, since flexible display elements using plastic film substrates, etc., use thin substrates, if sufficient precision cannot be obtained during cutting, the electrode leads used for connection with the outside may be damaged during cutting. There were problems such as wire breakage. Furthermore, even in the case of continuous manufacturing using a roll-to-roll method, the cutting process requires cutting the upper and lower substrates from each side, making the process complicated.

The present invention has been made for the purpose of solving the above-mentioned problems, and before bonding two flexible substrates configured such that the cut points of the upper and lower substrates do not coincide with each other, the upper and lower substrates are aligned with each other. Cuts penetrating the upper and lower substrates are made in advance at the parts where the parts are not cut, and remaining parts are formed on the extension of the cuts, and each remaining part is arranged in a line in a direction perpendicular to the direction of the cuts. After bonding the substrates together and performing steps such as encapsulating the display substance, in the final cutting step, the vicinity of each of the remaining portions is cut in a direction perpendicular to the incision direction so as to intersect with the incision, without damaging the electrode part of the terminal part,
In addition, the cutting is performed in one direction above or below the substrate.
Since it can be carried out only from one direction, it provides a manufacturing method that is effective for continuous production.

A detailed explanation will be given below with reference to the drawings.

FIG. 1 is a cross-sectional view for explaining a conventional manufacturing method.

In the figure, 1 and 2 are flexible substrates made of plastic film substrates, etc., 3 is a sealing material,
4 and 5 are electrodes, 6 is a liquid crystal, and 7 is a cutting blade. Conventionally, a sharp knife 7 has been used to manufacture flexible display elements (LCDs, etc.) in large numbers and to cut them into individual pieces.
However, as shown in FIG. 1, in the case of two flexible substrates in which two flexible display elements are arranged face-to-face and with their protruding terminal portions facing each other, Since there are parts of the upper and lower boards that do not match each other at the point where the upper and lower boards are separated, it is necessary to control the parts so that the upper and lower boards do not pass through when cutting the relevant parts, but in reality, it is difficult to cut the parts due to factors such as slight curvature of the board. As a result, the electrodes 4 at the terminals were often damaged, and since it was necessary to separate the board with the upper and lower electrodes, especially in the case of continuous production (roll-to-roll, etc.), It is necessary to perform cutting at the same time, or first cut the top surface, then turn the substrate over and cut the bottom surface, making the process complicated.

In the present invention, as shown in the cross-sectional view of FIG. 2 and the perspective view of FIG. is formed in advance, and in the final process, the electrode can be divided into individual pieces by cutting from above or below at one time, so that the electrode can be easily cut into pieces. It can be manufactured without damaging it. That is, before bonding the two flexible substrates together, at least at the divided portions of the upper and lower substrates that do not coincide with each other, a cut is made in advance to penetrate each of the upper and lower substrates, and a remaining portion is formed on an extension of the cut, The remaining portions are arranged in a line in a direction perpendicular to the incision direction, and after the substrates are pasted together and a display substance is encapsulated, in the final cutting step, the vicinity of each of the remaining portions is By cutting in a direction perpendicular to the incision direction so as to intersect with the incision, final division is facilitated.

FIGS. 4 1 and 2 are plan views showing the upper and lower flexible substrates 1 and 2 before lamination, respectively. In the figures, 8 and 9 are notches formed at each parting point before lamination, and the extension of the notches is Remaining portions are formed, and each of the remaining portions are arranged in a line with respect to the incision direction.

The broken line 10 shows the flexible substrates bonded together;
The final dividing point is shown after the process of enclosing the display substance, etc., and the final dividing is done by cutting the vicinity of each of the remaining parts in a direction perpendicular to the cutting direction so as to intersect with the cutting part, so that 6 pieces in one row are made. Left and right 2
A total of 16 flexible display elements in the set can be manufactured.

FIG. 5 is a plan view of the flexible substrates 1 and 2' in another embodiment, where 8' and 9' are the notches before bonding, 10' is the final parting point, and the area in the center of FIG. An example with the remainder removed is shown.

As described above in detail, the method for manufacturing a flexible display element of the present invention involves bonding together two flexible substrates on which electrodes for a plurality of elements are formed, and after going through processes such as encapsulating a display material, dividing the substrates at a plurality of points. By doing this, in a device in which a plurality of flexible display elements are obtained, a cut is formed in advance at a part of the dividing point of the flexible substrate before the flexible substrate is pasted together. Therefore, the present invention is characterized in that the above-mentioned final process is facilitated.According to the present invention, damage to the electrode lead portion is reduced, and in the final process, the above-mentioned Since it can be divided into individual pieces by performing only one cutting from below, continuous production by roll-to-roll etc. is easily possible, and productivity is improved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a cutting state of a flexible display element according to a conventional manufacturing method, FIG. 2 is a cross-sectional view showing a flexible display element according to a manufacturing method of the present invention, FIG. 3 is a perspective view thereof, and FIGS. FIG. 5 is a plan view 1 showing the arrangement of cuts in the upper substrate and a plan view 2 showing the arrangement of the cuts in the lower substrate in a pair of upper and lower flexible substrates. Explanation of symbols, 1, 2, 1', 2'...Flexible substrate, 3...Sealing material, 4, 5...Electrode, 6...Liquid crystal,
7... Cutting knife, 8, 9, 8', 9'... Notch portion before pasting, 10, 10'... Final parting location.

Claims (1)

[Scope of Claims] 1. By bonding together two flexible substrates such as plastic film substrates on which electrodes for a plurality of elements are formed, and cutting them at a plurality of points after going through a process such as encapsulating a display substance. , in a method for manufacturing a flexible display element that obtains a plurality of flexible display elements, at least two flexible display elements are pasted so that they are placed upside down and with their terminal portions facing each other. Before bonding together two flexible substrates that are to be put together and are configured such that the cut points of the upper and lower boards do not match each other at the ends of the terminal portions, the cut points of the upper and lower boards that do not match each other are preliminarily cut. In addition to providing cuts that pass through each of the upper and lower substrates, remaining portions are formed on the extension of the above-mentioned cuts, each remaining portion is arranged in a line in a direction perpendicular to the direction of the above-mentioned cuts, and the substrates are bonded together. After the process of encapsulating the display substance, etc., in the final cutting process, the vicinity of each of the remaining parts is cut in a direction perpendicular to the incision direction so as to intersect with the incision, thereby forming a plurality of flexible display elements. A method for manufacturing a flexible display element that obtains the following.