JP4146627B2 - Method for dividing liquid crystal display element - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for dividing a liquid crystal display element.
[0002]
[Prior art]
FIG. 1 is a cross-sectional view showing a configuration of a liquid crystal display element. The liquid crystal display element has a configuration in which a liquid crystal 30 is sealed between the first substrate 10 and the second substrate 20. The first substrate 10 is configured by forming a color filter protective film 12, a color filter black matrix 13, a color filter layer 14, a transparent electrode 15, an insulating film 16 and an alignment film 17 on a glass substrate 11. The second substrate 20 is configured by forming a transparent electrode 22, an insulating film 23, and an alignment film 24 on a glass substrate 21.
[0003]
Further, in order to keep the distance between the first and second substrates 10 and 20 constant, spacers 31 and adhesive particles 32 are dispersed in the liquid crystal 30. Further, a seal spacer 33 made of glass fiber and silica and a seal material 34 using epoxy are arranged around the first and second substrates 10 and 20.
Each of the liquid crystal display elements is rarely manufactured one by one, and a plurality of (many) single liquid crystal display element seal portions are provided on a multi-cavity mass production flow substrate, and the seal material is cured by bonding the substrates and then a single piece. A method of cutting and separating into liquid crystal display elements is employed. FIG. 2 is a top view (a) and a cross-sectional view (b) showing an example in which four liquid crystal display elements are taken out from one mass production flow substrate. The first substrate 1a and the second substrate 1b, which are mass production flow substrates, are overlapped via the sealing material 3 of the single liquid crystal display element 2, and after the sealing material 3 is cured, the portion indicated by the dotted line in the figure is cut to 4 The individual liquid crystal display elements 2 are taken out. In a small liquid crystal display element, 50 to several hundreds of liquid crystal display elements are taken out from one substrate.
[0005]
FIG. 3 is a top view of the mass production flow substrate cut into a matrix after the seal is completed. After the seal is completed, the first substrate and the second substrate are grooved in a matrix by dicing or scribing. Then, 76 single liquid crystal display elements 2 'can be obtained by dividing into single liquid crystal display elements 2' by a breaker.
[0006]
[Problems to be solved by the invention]
When dividing into single liquid crystal display elements by a breaker, fragments of the substrate enter the lower surface of the substrate and damage the substrate, or the single liquid crystal display element is dispersed and cracks enter under the other single liquid crystal display elements. In some cases, there are problems such as deterioration in quality and reduction in yield. The stage cleaning of the breaker device is required, causing a decrease in operating rate.
[0007]
Since the single liquid crystal display elements are dispersed, it is necessary to collect the single liquid crystal display elements, and it is necessary to rearrange them for subsequent processes.
[0008]
[Means for Solving the Problems]
In a liquid crystal display element dividing method in which a plurality of liquid crystal display elements are formed on a mass production flow substrate and then divided into a single liquid crystal display element, at least a film is pasted on the first substrate side and the second substrate side is in a matrix form Grooving (hereinafter referred to as scribing), applying a film to a scribed second substrate, removing the film attached to the first substrate, breaking the second substrate, and scribing to the first substrate side The liquid crystal display element dividing method includes: a step of attaching a film to a scribed first substrate; a step of peeling the film attached to the second substrate; and a step of breaking the first substrate.
[0009]
In a liquid crystal display element dividing method in which a plurality of liquid crystal display elements are formed on a mass production flow substrate and then divided into a single liquid crystal display element, at least a film is attached to the first substrate side and the second substrate side is scribed. A step of attaching a film to a scribed second substrate, a step of peeling the film attached to the first substrate, a step of breaking the second substrate, a step of scribing the first substrate side, and a step of scribing the first substrate A liquid crystal display element having a step of attaching a film and peeling a film attached to a second substrate, a step of breaking the first substrate, a step of extending the film, and a step of peeling a single liquid crystal display element from the film The division method is used.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
4 to 11 are schematic views for explaining a method of dividing the liquid crystal display element of the present invention.
[0011]
FIG. 4 shows a step of attaching the film 5A to the first substrate 6 side and scribing the second substrate 7 side. The second substrate 7 is half-cut by the scriber 4 to form the grooves 7a.
[0012]
FIG. 5 shows a state in which the film 5B is pasted on the scribed second substrate 7 and the film 5A stuck on the first substrate 6 is peeled off.
[0013]
FIG. 6 shows a step of breaking the second substrate 7. The second substrate 7 having the scribed grooves 7 a is broken vertically and horizontally by the jig 8.
[0014]
FIG. 7 shows a state where the break of the second substrate 7 has been completed.
[0015]
Figure 8 shows the step of scribing the first substrate 6, to form a groove 6a by scribing the first substrate 6 by a scriber 4.
[0016]
FIG. 9 shows a step of breaking the first substrate 6, and the film 5 C is attached to the first substrate 6 having the scribed grooves 6 a, and the film 5 B attached to the second substrate 7 is peeled off, as shown in the figure. The first substrate 6 is broken vertically and horizontally by the jig 8. In this state, the division of the single liquid crystal display element 2 ′ is completed.
[0017]
FIG. 10 shows a process of expanding the film 5C after the break is completed, and shows a state in which the film 5C is expanded. By expanding the film 5C, the single liquid crystal display elements 2 ′ adhered to the film 5C are separated by an amount corresponding to the expansion of the film 5C.
[0018]
FIG. 11 shows a process of peeling a single liquid crystal display element 2 ′ from the film 5C. The jig 9a lifts the liquid crystal display element 2 ′ by breaking through the film 5C from the lower part of the film 5C with a jig 9a having a needle. The element 2 ′ is adsorbed and peeled off from the film 5C.
[0019]
【The invention's effect】
Even if the scribed substrate is divided, the fragments of the substrate and the single liquid crystal display element are still attached to the film, so that the fragments of the substrate enter the lower surface of the substrate and damage the substrate, or the single liquid crystal display element is dispersed. It was possible to prevent cracks from entering under the other single liquid crystal display elements. At the same time, problems such as quality deterioration and yield reduction were also resolved. Moreover, no longer be required stage cleaning of the breaker device, it was also eliminated to cause a decrease in the rate of operation of the breaker.
[0020]
Since the divided liquid crystal display elements are aligned, it is easy to collect a single liquid crystal display element. In addition, an automatic machine can be used for alignment to a pallet to be transported to the next process.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a liquid crystal display device. FIG. 2 is a top view (a) and a cross-sectional view (b) of an example in which four liquid crystal display devices are taken out from one mass production flow substrate.
FIG. 3 is a top view of a mass production flow substrate cut into a matrix after the seal is completed. FIG. 4 is a schematic diagram for explaining a method for dividing the liquid crystal display element of the present invention. FIG. 6 is a schematic diagram for explaining a method for dividing a liquid crystal display element of the present invention. FIG. 7 is a schematic diagram for explaining a method for dividing a liquid crystal display element of the present invention. 8 is a schematic diagram for explaining a method for dividing the liquid crystal display element of the present invention. FIG. 9 is a schematic diagram for explaining a method for dividing the liquid crystal display element of the present invention. Schematic diagram for explaining the method [FIG. 11] Schematic diagram for explaining the method for dividing the liquid crystal display element of the present invention [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1a 1st board | substrate 1b 2nd board | substrate 2 Liquid crystal display element 2 'Liquid crystal display element 3 Seal material 4 Scriber 5A Film 5B Film 5C Film 6 1st board | substrate 6a Groove 7 2nd board | substrate 7a Groove 8 Jig 9a Jig 9b Jig 10 1st Substrate 11 Glass substrate 12 Color filter protective film 13 Black matrix 14 Color filter layer 15 Transparent electrode 16 Insulating film 17 Alignment film 20 Second substrate 21 Glass substrate 22 Transparent electrode 23 Insulating film 24 Alignment film 30 Liquid crystal 31 Spacer
32 Adhesive particles 33 Seal spacer
34 Sealing material

Claims (2)

In a liquid crystal display element dividing method in which a plurality of liquid crystal display elements are formed on a mass production flow substrate and then divided into a single liquid crystal display element, at least a film is attached to the first substrate side and the second substrate side is scribed. A step of attaching a film to the scribed second substrate, a step of peeling the film attached to the first substrate, a step of breaking the second substrate, a step of scribing the first substrate side, and a step of scribing the first substrate A method for dividing a liquid crystal display element, comprising: a step of attaching a film and removing a film attached to a second substrate; and a step of breaking the first substrate. In a liquid crystal display element dividing method in which a plurality of liquid crystal display elements are formed on a mass production flow substrate and then divided into a single liquid crystal display element, at least a film is attached to the first substrate side and the second substrate side is scribed. A step of attaching a film to the scribed second substrate, a step of peeling the film attached to the first substrate, a step of breaking the second substrate, a step of scribing the first substrate side, and a step of scribing the first substrate A step of peeling a film pasted on a second substrate, a step of breaking the first substrate, a step of expanding the film, and a step of peeling a single liquid crystal display element from the film, A method for dividing a liquid crystal display element.

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