TWI706187B - Display panel production method - Google Patents

Abstract

The objective of the present invention is to provide a production method for a display panel, which can prevent the occurrence of chips, cracks on the end-side of the display panel during production.

The mean for solving the problem of the aforesaid objective comprises steps as follow: the laminated optical film on the outer-face of opposing mother board is cut along the contour of each part of the opposing substrate 2 of display panel 1, thereafter the inner-face 5a of each of the cut off part are remained while the unwanted part of the optical film is peeled off from the surface of the opposing mother board; the opposing mother board is cut along the contour of each part of the opposing substrate 2 of display panel 1; the laminated optical film on the outer-face of element mother board is cut along the contour of each part of the element substrate 3 of display panel 1, thereafter the inner-face 5b of each of the cut off part are remained while the unwanted part of the optical film is peeled off from the surface of the opposing mother board; element mother board is cut along the contour of each part of the element substrate 3 of display panel 1.

Description

Manufacturing method of display panel

The present invention relates to a manufacturing method of a display panel.

For example, a liquid crystal display panel has a structure in which a liquid crystal layer is arranged between an element substrate and a counter substrate that are arranged in opposite directions to each other, and a polarizing film is attached to the outer surfaces of the element substrate and the counter substrate ( Polarizing plate) and other optical films.

When manufacturing this kind of liquid crystal display panel, after manufacturing the panel manufacturing substrate formed by arranging a plurality of parts (unit cells, sometimes called unit cells) that become the liquid crystal display panel, each panel is cut out from the panel manufacturing substrate The unit is used to manufacture a plurality of liquid crystal display panels at once (for example, refer to Patent Documents 1 and 2).

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2004-219755 A

[Patent Document 2] JP 2007-232911 A

Recently, with the thinning of image display devices and the enlargement of display screens, display panels that have been thinned and narrowed, or display panels used in smart watches and car meters, are incompatible with traditional flat shapes. The demand for rectangles (rectangular) (meaning rectangular display panels) and different planar shapes (meaning special-shaped display panels) is increasing.

However, as the display panel becomes thinner, the strength of the panel manufacturing substrate will decrease, and when each unit is cut out from the panel manufacturing substrate, there may be defects and cracks at the end (frame part) of the display panel. Moreover, in the display panel with defects and cracks at the end as described above, it cannot be manufactured from the viewpoint of narrowing the frame, which requires high dimensional accuracy and reducing the strength of the end.

On the other hand, in the case of a conventional rectangular display panel, the polarizing film only needs to be aligned with the four corners (corners) of the panel as a reference when attaching the polarizing film, and the polarizing film is easier to align. In contrast, when it is a special-shaped display panel, it is more difficult to align the polarizing film when it is a rectangular display panel. In particular, in the case of a circular display panel, the tilt of the polarization axis with respect to the polarizing film of the display panel cannot be known, so the alignment when the polarizing film is attached becomes very difficult.

Furthermore, when manufacturing a rectangular display panel, the above-mentioned panel manufacturing substrate is cut into a grid shape, whereby the rectangular display panel can be cut out at once. On the other hand, when manufacturing a special-shaped display panel, it is necessary to cut out the cells one by one from the panel production substrate along the outline of the special-shaped display panel. At this time, the alignment system when cutting out the unit from the substrate for panel production is better than that of manufacturing a rectangular display surface It’s more difficult to board.

The present invention was proposed in view of the above-mentioned conventional situation, and its purpose is to provide a method for manufacturing a display panel, which can suppress defects and cracks at the end of the display panel during manufacturing, and improve the resistance to irregular display The optical film bonding precision of the panel, and the production of special-shaped display panels with good yield.

As a means to solve the above-mentioned problems, according to aspects of the present invention, a method for manufacturing a display panel is provided. The method for manufacturing the display panel includes the following steps: a step of preparing a substrate for panel production, and the substrate for panel production is The opposing mother substrate and the element mother substrate forming the aforementioned display panel are arranged in opposing directions, and a plurality of units forming the aforementioned display panel are arranged in the plane; will be bonded to the aforementioned opposing mother substrate After the optical film on the outer surface is cut along the contour of each part that becomes the counter substrate of the aforementioned display panel, the inside of each cut part is retained, and the excess part of the aforementioned optical film is removed from the aforementioned counter mother The step of peeling and removing the surface of the substrate; the step of cutting the aforementioned counter substrate along the contour of each part of the counter substrate that becomes the aforementioned display panel, thereby cutting the aforementioned counter substrate; The contour of each part of the element substrate is cut into the aforementioned element mother substrate, thereby cutting out the aforementioned element substrate.

Moreover, the manufacturing method of the display panel of the aforementioned aspect may also include: cutting the optical film attached to the outer surface of the element mother substrate along the contour of each part of the element substrate of the display panel. After cutting, the inside of each cut part is retained, and the excess part of the optical film is peeled and removed from the surface of the element mother substrate.

Furthermore, in the manufacturing method of the display panel of the aforementioned aspect, the counter substrate and the element substrate may be cut into different shapes.

Moreover, in the manufacturing method of the display panel of the aforementioned aspect, the contour when the optical film is cut can be smaller than the contour when the counter substrate or the element substrate is cut out.

Moreover, in the manufacturing method of the display panel of the aforementioned aspect, it is also possible to refer to the first alignment mark indicating the position where the optical film is attached, and the second alignment mark indicating the position of each unit described above, and simultaneously become The contour of each part of the counter substrate of the display panel or the element substrate is cut out of the optical film.

Furthermore, the manufacturing method of the display panel of the aforementioned aspect can also refer to the aforementioned second alignment mark corresponding to a plurality of units located around the unit to be cut from among the aforementioned units.

Furthermore, in the manufacturing method of the display panel of the aforementioned aspect, when the optical film is cut along the outline, the cutting can be started at least from a position avoiding the wiring portion formed on the element substrate.

Furthermore, in the manufacturing method of the display panel of the aforementioned aspect, when the optical film is cut along the outline, laser light may be used to start cutting at least from the corner of the outline.

Moreover, in the manufacturing method of the display panel of the aforementioned aspect, the excess portion can be peeled off along the diagonal direction of the optical film.

Moreover, in the manufacturing method of the display panel of the foregoing aspect, the planar shape of the display panel may be a special shape other than a rectangle.

Furthermore, in the manufacturing method of the display panel of the aforementioned aspect, the aforementioned optical film may be a polarizing film.

Moreover, in the manufacturing method of the display panel of the aforementioned aspect, the aforementioned display panel may be a liquid crystal display panel.

As described above, according to the aspect of the present invention, a method for manufacturing a display panel can be provided, which can suppress defects and cracks at the end of the display panel during manufacturing, and can improve the adhesion of optical films to irregular display panels. High precision, and manufacture special-shaped display panels with good yield.

1‧‧‧Liquid crystal display panel (abnormal display panel)

Unit 1A‧‧‧

2‧‧‧Opposite substrate

2A‧‧‧Opposite mother board

3‧‧‧Component substrate

3A‧‧‧Mother board for components

3a‧‧‧Element forming part

3b‧‧‧Wiring forming part

4‧‧‧Liquid crystal layer

5A, 5B, 5a, 5b‧‧‧Polarizing film (optical film)

6‧‧‧Wiring part

7‧‧‧Sealing material

10‧‧‧Substrate for panel production

S‧‧‧Display

AM1‧‧‧First alignment mark

AM2‧‧‧The second counterpoint

L‧‧‧Laser

Fig. 1 shows an example of a liquid crystal display panel manufactured by applying the present invention, Fig. 1 (a) is a plan view, and Fig. 1 (b) is a cross-sectional view.

Fig. 2 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1. Fig. 2 (a) is a plan view, and Fig. 2 (b) is a cross-sectional view.

Fig. 3 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1, Fig. 3 (a) is a plan view, and Fig. 3 (b) is a cross-sectional view.

Fig. 4 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1, Fig. 4(a) is a plan view, and Fig. 4(b) is a cross-sectional view.

Fig. 5 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1, Fig. 5(a) is a plan view, and Fig. 5(b) is a cross-sectional view.

Fig. 6 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1, Fig. 6(a) is a plan view, and Fig. 6(b) is a cross-sectional view.

Fig. 7 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1, Fig. 7 (a) is a plan view, and Fig. 7 (b) is a cross-sectional view.

Fig. 8 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1, Fig. 8 (a) is a plan view, and Fig. 8 (b) is a cross-sectional view.

Fig. 9 is a diagram for sequentially explaining the manufacturing steps of the liquid crystal display panel shown in Fig. 1, Fig. 9(a) is a plan view, and Fig. 9(b) is a cross-sectional view.

Fig. 10 shows a plan view of an example of arrangement of the first alignment mark and the second alignment mark in the substrate for panel production.

The following describes the embodiments of the present invention in detail with reference to the drawings.

In addition, the drawing used in the following description is to make the features easy to understand, and there are cases where the feature parts are enlarged for convenience, and the size ratio of each structural element is not limited to the actual ones.

(Display panel)

First, as an example of a display panel manufactured by applying the present invention, for example, the liquid crystal display panel 1 shown in Figure 1 (a) and (b) will be described. Moreover, Fig. 1(a) is a plan view showing the structure of the liquid crystal display panel 1. FIG. 1(b) is a cross-sectional view showing the structure of the liquid crystal display panel 1. FIG.

As shown in Figure 1 (a) and (b), the liquid crystal display panel 1 includes: a counter substrate 2 and an element substrate 3 arranged in opposing directions, and a counter substrate 2 and an element substrate 3 Between the liquid crystal layer4.

The liquid crystal display panel 1 is a special-shaped display panel with a circular display surface S. In addition, the "alien display panel" referred to in the present invention refers to a conventional planar shape (display surface) that is rectangular (rectangular) (rectangular display panel), and the planar shape (display surface) is a shape other than a rectangle. Therefore, as a special-shaped display panel, for example, the shape of the display surface when used in smart watches, car meters, etc., in addition to the above-mentioned circular shape, for example, an elliptical circle, a polygonal shape (for example, triangle, pentagon, six An angular shape, an octagonal shape, etc.), a shape in which at least one of the four corners of a rectangle is chamfered, and a shape in which a part of the rectangle is provided with a notch or other free shapes.

The counter substrate 2 is formed in a circular shape corresponding to the display surface S. In addition, a counter electrode (not shown) is provided on the inner surface of the counter substrate 2. On the other hand, on the outer surface of the counter substrate 2, a circular polarizing film 5a is bonded. The polarizing film 5a and the opposite substrate 2 may have the same outer diameter (outer shape), but preferably have a slightly smaller outer diameter (smaller outer shape) than the opposite substrate 2 as in this embodiment.

The element substrate 3 has: a shape corresponding to the display surface S The element forming portion 3a having a circular shape and the wiring forming portion 3b continuously formed in the element forming portion 3a with a width corresponding to the element forming portion 3a. On the inner surface of the element forming portion 3a, although omitted in the figure, there are provided a plurality of pixel electrodes arranged in a matrix, and driving elements (not shown) such as TFTs connected to the respective pixel electrodes. The wiring forming part 3b is provided with a plurality of wiring parts 6 connected to each drive element. On the other hand, on the outer surface of the element substrate 3 (element forming portion 3a), a circular polarizing film 5b is bonded. The polarizing film 5b and the element forming portion 3a may have the same outer diameter (outer shape), but preferably have a slightly smaller outer diameter (smaller outer shape) than the element forming portion 3a as in the present embodiment.

The liquid crystal layer 4 is formed by sealing the periphery between the counter substrate 2 and the element forming portion 3a (element substrate 3) with a sealing material 7 into a circular shape, and injecting liquid crystal inside, and the wiring portion 6 extends to The outer side of the area enclosed by the sealing material 7 (corresponding to the display surface S).

(Method of manufacturing display panel)

Hereinafter, as a method of manufacturing a display panel to which the present invention is applied, the case of manufacturing the above-mentioned liquid crystal display panel 1 will be described with reference to FIG. 2 to FIG. 9 and FIG. 10. In addition, Figures 2 to 9 are diagrams for sequentially describing the manufacturing steps of the liquid crystal display panel 1. Figure (a) in each figure shows a plan view of each step, and figure (b) in each figure shows each step的sectional view. FIG. 10 is a plan view showing an example of the arrangement of the first alignment mark AM1 and the second alignment mark AM2 in the substrate 10 for panel production described later.

When manufacturing the above-mentioned liquid crystal display panel 1, first, as in the second As shown in FIGS. (a) and (b), a rectangular (rectangular)-shaped panel production substrate 10 is prepared, which is formed by arranging a plurality of parts (hereinafter referred to as cells) 1A of the liquid crystal display panel 1 in a plane. The substrate 10 for panel production includes a rectangular (rectangular)-shaped opposed mother substrate 2A and an element mother substrate 3A that are arranged in opposing directions. The opposing mother substrate 2A is formed by arranging a plurality of parts to become the opposing substrate 2 described above. On the other hand, the element mother substrate 3A is formed by arranging a plurality of parts to become the element substrate 3 described above. Furthermore, between the opposing mother substrate 2A and the element mother substrate 3A, the periphery of each cell 1A is closed in a circular shape with a sealing material 7, and liquid crystal is injected into the inner side, thereby forming a plurality of liquid crystal layers 4.

Next, as shown in Fig. 3 (a) and (b), in the panel production substrate 10, a rectangular polarizing film 5A is bonded to the outer surface of the opposed mother substrate 2A, and the element mother substrate 3A A rectangular polarizing film 5B is attached to the outer surface of.

Among them, as shown in Fig. 10, the facing mother substrate 2A is provided with a first alignment mark AM1 indicating the bonding position of the polarizing film 5A. The first alignment mark AM1 only needs to be provided in at least two of the four corners of the opposed mother substrate 2A (three in this embodiment). Specifically, it is preferable that among the four corners of the facing mother substrate 2A, the first alignment mark AM1 is provided at at least two corners along the same end side.

When bonding the polarizing film 5A to the facing mother substrate 2A, the polarizing film 5A is aligned with respect to the facing mother substrate 2A while referring to the first alignment mark AM1. Thereby, the four corners of the opposing mother substrate 2A and the four corners of the polarizing film 5A can be aligned with each other, and the deviation can be accurately and easily The optical film 5A is bonded to the facing mother substrate 2A.

In addition, in the element mother substrate 3A, although omitted from the illustration, the first alignment mark AM1 indicating the bonding position of the polarizing film 5B is provided in the same way as the facing mother substrate 2A. When the polarizing film 5B is bonded to the element mother substrate 3A, the polarizing film 5B is aligned with respect to the element mother substrate 3A while referring to the first alignment mark AM1. Thereby, the four corners of the element mother substrate 3A and the four corners of the polarizing film 5B can be aligned with each other, and the polarizing film 5B can be accurately and easily bonded to the element mother substrate 3A.

Next, as shown in Figure 4 (a) and (b), the polarizing film 5A attached to the outer surface of the opposed mother substrate 2A is cut into a circle along the contour of each part that becomes the opposed substrate 2 shape.

When cutting the polarizing film 5A, laser light (for example, a carbon dioxide gas laser, wavelength 9.4 μm) L is used, and the laser light is scanned while cutting the polarizing film 5A along the contour of each polarizing film 5a. At this time, the cutting line caused by the laser light is preferably located at a position slightly inner than the contour of the portion that becomes the counter substrate 2. This prevents the cutter from contacting the polarizing film 5a when cutting the facing mother substrate 2A along the contour of the portion that becomes the counter substrate 2.

Moreover, when cutting the polarizing film 5A by laser light, it is preferable to start from a position that does not overlap with the wiring portion 6 formed in each unit 1A that becomes the element substrate 3 (specifically, wiring forming portion 3b) Cut. Since the cutting start position overlaps with the cutting end position, cutting is performed by laser light from a position avoiding the wiring part 6, thereby preventing damage to the wiring part 6 caused by the laser light.

Moreover, when cutting the polarizing film 5A, it is preferable to start cutting at least from the corner of the outline of each polarizing film 5a. Thereby, each polarizing film 5a can be completely cut out along the outline. However, as in the present embodiment, when the outline of each polarizing film 5a is circular, the outline does not have corners, so there is no need to specify the starting position of the cutting.

In addition, in this embodiment, the case where laser light is used to cut the polarizing film 5A is exemplified, but other than laser light may be used, for example, a cutter may be used to cut the polarizing film 5A.

However, as shown in Fig. 10, the facing mother substrate 2A is provided with a second alignment mark AM2 indicating the position of each unit 1A. For example, at least two second alignment marks AM2 (two in this embodiment) may be provided around each unit 1A. Specifically, it is preferable to provide at least two at a certain interval in the vicinity of each unit 1A.

In this embodiment, while referring to the above-mentioned first alignment mark AM1 and second alignment mark AM2, the portion of each unit 1A that becomes the counter substrate 2 is aligned. Specifically, after identifying the position of the first alignment mark AM1, the second alignment mark AM2 is used to identify the position of the unit 1A to be cut from among the plurality of units 1A. Thereby, the laser beam can be aligned with good accuracy for the unit 1A to be cut.

In addition, in this embodiment, it is also possible to refer to the second alignment mark AM2 corresponding to a plurality of cells 1A located around the cell 1A to be cut. At this time, before identifying the position of the unit 1A to be the cutting target among the plurality of units 1A, identify the location around it The positions of the plurality of units 1A can be used to align the unit 1A as the cutting target with laser light with better accuracy.

Next, as shown in Figure 5 (a) and (b), the inner side (polarizing film 5a) of the cut parts of the polarizing film 5A is left, and the excess part of the polarizing film 5A is removed from the opposing mother substrate 2A peeled off the surface. It is preferable to peel off the extra part of the polarizing film 5A along the diagonal direction of the polarizing film 5A. Thereby, the excess part of the polarizing film 5A can be completely peeled off from the surface of the mother substrate 2A for facing.

Next, as shown in Figs. 6(a) and (b), the polarizing film 5B bonded to the outer surface of the element mother substrate 3A is formed along the element substrate 3 (specifically, the element forming portion 3a). The outline of each part is cut into a circular shape.

When cutting the polarizing film 5B, laser light (for example, a carbon dioxide gas laser, wavelength 9.4 μm) L is used, and the laser light is scanned while cutting the polarizing film 5B along the contour of each polarizing film 5b. At this time, the cutting line caused by the laser light is preferably located only slightly inward of the contour of the part that becomes the element forming portion 3a. This prevents the cutter from contacting the polarizing film 5b when cutting the element mother substrate 3A described later along the contour of the part that becomes the element substrate 3 (element forming portion 3a).

Moreover, when cutting the polarizing film 5B by laser light, it is preferable to start from a position that does not overlap the wiring portion 6 formed in each unit 1A that becomes the element substrate 3 (specifically, the wiring forming portion 3b) Cut. Since the cutting start position and the cutting end position overlap, the laser light can be used to start cutting from a position that avoids the wiring part 6 to prevent laser light Damage to the wiring part 6 caused by this.

Moreover, when cutting the polarizing film 5B, it is preferable to start cutting at least from the corner|angular part of the outline of each polarizing film 5b. Thereby, each polarizing film 5b can be completely cut out along the outline. However, as in the present embodiment, when the outline of each polarizing film 5b is circular, the outline does not have corners, so there is no need to specify the starting position of the cutting.

In addition, in the present embodiment, a case where laser light is used to cut the polarizing film 5B is exemplified. However, other than laser light may be used, for example, a cutter may be used to cut the polarizing film 5B.

In addition, when the polarizing film 5B is cut, the alignment of the portion of each unit 1A that becomes the element substrate 3 (element forming portion 3a) is the same as that when the polarizing film 5A is cut. That is, in the present embodiment, while referring to the first alignment mark AM1 and the second alignment mark AM2, the portion of each unit 1A that becomes the element substrate 3 is aligned. Thereby, the laser beam can be aligned with good accuracy for the unit 1A to be cut.

Next, as shown in Figs. 7 (a) and (b), the inner side (polarizing film 5b) of the cut parts of the polarizing film 5B is left, and the excess part of the polarizing film 5B is removed from the element mother substrate 3A Peel off the surface to remove. It is preferable to peel off the excess part of the polarizing film 5B along the diagonal direction of the polarizing film 5B. Thereby, the excess part of the polarizing film 5B can be completely peeled off from the surface of the mother substrate 3A for elements.

Next, as shown in Figs. 8(a) and (b), the opposed mother substrate 2A is cut into a circular shape along the contours of the portions forming the opposed substrate 2 described above. When cutting the opposing mother board 2A, the tool can be used Scribe cutting processing. There is no particular limitation on the scribing and cutting process, as long as a method can be used that can cut the opposing mother substrate 2A along the contour of the portion of each opposing substrate 2.

In addition, the alignment of the portion of each unit 1A that becomes the counter substrate 2 when cutting the counter mother substrate 2A is the same as when cutting the polarizing film 5A described above. That is, in the present embodiment, while referring to the first alignment mark AM1 and the second alignment mark AM2, the portion of each unit 1A that becomes the counter substrate 2 is aligned. Thereby, the counter substrate 2 of each unit 1A can be cut out from the counter mother substrate 2A with good accuracy.

Next, as shown in Figs. 9(a) and (b), the element mother substrate 3A is cut into a circular shape along the contour of each part that becomes the element substrate 3 described above. When cutting the mother substrate 3A for the component, a scribing cutting process using a cutter can be used. There is no particular limitation on the scribing and cutting process, as long as a method can be used that can cut the component mother substrate 3A along the contour of the part forming each component substrate 3.

In addition, the alignment of the part of each unit 1A that becomes the element substrate 3 when the element mother substrate 3A is cut is the same as when the above-mentioned polarizing film 5A is cut. That is, in the present embodiment, while referring to the first alignment mark AM1 and the second alignment mark AM2, the portion of each unit 1A that becomes the element substrate 3 is aligned. Thereby, the element substrate 3 of each unit 1A can be cut out from the element mother substrate 3A with good accuracy.

Through the above-mentioned steps, each unit 1A can be cut out from the panel manufacturing substrate 10, and a plurality of the above-mentioned liquid crystal display panels 1 can be manufactured at once.

As described above, compared with the manufacturing of rectangular display panels, when manufacturing a special-shaped display panel such as the above-mentioned liquid crystal display panel 1, the alignment when the unit 1A is cut out from the panel manufacturing substrate 10 is placed on the counter substrate 2 and the element substrate 3. It becomes very difficult to align the polarizing films 5a and 5b.

In contrast, in this embodiment, rectangular polarizing films 5A, 5B are bonded to the rectangular opposing mother substrate 2A and the element mother substrate 3A, whereby the opposing mother substrate 2A can be attached to the polarizing films 5A and 5B. And the element mother substrate 3A is accurately and easily bonded to the polarizing films 5A and 5B. After that, since each cell 1A is cut out from the panel production substrate 10, the tilt of the polarization axis of the polarizing films 5a, 5b can be maintained for the liquid crystal display panel 1 with high accuracy.

Furthermore, in this embodiment, the opposed substrate 2 and the element substrate 3 each having a different shape from each other are cut out from the opposed mother substrate 2A and the element mother substrate 3A, so that it can be manufactured efficiently as described above. The special-shaped display panel of the liquid crystal display panel 1.

In addition, in this embodiment, the part that becomes each unit 1A is aligned while referring to the first alignment mark AM1 and the second alignment mark AM2, thereby improving the bonding to the counter substrate 2 and the element substrate 3 The position accuracy of the polarizing films 5a, 5b and the position accuracy of the opposing substrate 2 and the element substrate 3 are cut out from the opposing mother substrate 2A and the element mother substrate 3A.

Therefore, according to the manufacturing method of this embodiment, even when the liquid crystal display panel 1 is a special-shaped display panel, the adhesion accuracy of the polarizing films 5a, 5b to this liquid crystal display panel 1 can be improved, and the liquid crystal display can be manufactured with good yield Panel 1.

In addition, the present invention is not necessarily limited to those of the above-mentioned embodiment. Various changes can be made without departing from the scope of the present invention.

Specifically, in the above embodiment, the cutting of the polarizing films 5a, 5b and the cutting of the mother substrates 2A, 3A may be performed in the order of the opposing mother substrate 2A side and the element mother substrate 3A side. In the reverse order to the foregoing, that is, the cutting of the polarizing films 5b, 5a and the cutting of the mother substrates 3A, 2A are performed in the order of the element mother substrate 3A side and the facing mother substrate 2A side.

Furthermore, in the above-mentioned embodiment, it is exemplified that after the substrate 10 for panel production is produced (prepared), the polarizing films 5a, 5b bonded to the outer surface of the opposed mother substrate 2A or the element mother substrate 3A are cut out In this case, it is also possible to cut the polarizing films 5a, 5b attached to the outer surface of the opposing mother substrate 2A or the element mother substrate 3A using the same method as the above-mentioned embodiment before the panel production substrate 10 is produced. cut.

In this case, after the polarizing films 5a and 5b are cut and removed, the opposed mother substrate 2A and the element mother substrate 3A are joined via the sealing material 7 and liquid crystal is injected to produce the panel production substrate 10. After that, using the same method as in the above-mentioned embodiment, it is only necessary to perform cutting of the opposed mother substrate 2A and the element mother substrate 3A.

Moreover, although the polarizing films 5a and 5b are exemplified as the optical films, the optical films may be those containing polarizing films 5a and 5b, and the polarizing films 5a and 5b may be laminated together with, for example, optical compensation films, brightness enhancement films, and antireflection films. And other functional films.

Furthermore, a part of the first alignment mark AM1 and the second alignment mark AM2 may be shared. That is, a part of the first alignment mark AM1 can be added to indicate the position of the unit 1A as the second alignment mark. The function of the number AM2 is a function of the first alignment mark AM1 indicating the bonding position of the polarizing films 5a, 5b (optical film) to a part of the second alignment mark.

Moreover, the liquid crystal display panel 1 is not limited to the transmissive type, and may be a reflective type. In the case of the reflective type, since the polarizing film 5a (optical film) is arranged only on the counter substrate 2, the steps shown in Figs. 6 and 7 above are not required.

Furthermore, for cutting of the facing mother substrate 2A and the element mother substrate 3A, other cutting methods can be used in addition to the above-mentioned scribing cutting process using a cutter. Specifically, cutting methods such as laser cutting and water jet cutting can be used.

(Industrial availability)

In addition, the present invention is not limited to the production of the above-mentioned liquid crystal display panel 1. For example, the present invention can be widely applied to the production of display panels such as organic EL panels.

Moreover, the present invention is not limited to the manufacture of the above-mentioned irregular-shaped display panel, and the present invention can also be applied when manufacturing a conventional rectangular display panel with a rectangular (rectangular) planar shape. In particular, according to the present invention, when manufacturing a thinned and narrow-framed rectangular display panel, it is possible to suppress the occurrence of defects and cracks at the end of the display panel.

1‧‧‧Liquid crystal display panel (abnormal display panel)

2‧‧‧Opposite substrate

3‧‧‧Component substrate

3a‧‧‧Element forming part

3b‧‧‧Wiring forming part

4‧‧‧Liquid crystal layer

5a,5b‧‧‧Polarizing film (optical film)

6‧‧‧Wiring part

7‧‧‧Sealing material

S‧‧‧Display

Claims (11)

A method for manufacturing a display panel, comprising the steps of: preparing a substrate for panel production. The substrate for panel production is arranged in opposite directions to form an opposing mother substrate and a component mother substrate for the aforementioned display panel, And a plurality of units forming the aforementioned display panel are arranged in the plane; the optical film attached to the outer surface of the aforementioned counter mother substrate is cut along the contour of each part of the counter substrate of the aforementioned display panel. After cutting, the inner side of each cut part is retained, and the excess part of the optical film of the facing mother substrate is peeled and removed from the surface of the facing mother substrate; along the way it becomes the display panel The step of cutting out the contour of each part of the counter substrate to cut out the aforementioned counter substrate; cutting the aforementioned element mother substrate along the contour of each part of the component substrate that becomes the aforementioned display panel , Thereby cutting out the step of the aforementioned element substrate; and while referring to the alignment mark indicating the position of the optical film on the facing mother substrate and the second alignment mark indicating the position of the aforementioned units, follow The contour of each part that becomes the counter substrate of the display panel is cut out of the optical film of the counter mother substrate. The manufacturing method of the display panel as described in the first item of the scope of patent application, which includes: aligning the optical film attached to the outer surface of the aforementioned element mother substrate After cutting the outline of each part of the element substrate that becomes the display panel, the inside of each cut part is left, and the excess part of the optical film of the element mother substrate is removed from the element mother substrate The step of peeling and removing the surface; and referring to the alignment mark indicating the position where the optical film is bonded to the element mother substrate and the second alignment mark, while marking the parts of the element substrate of the display panel The aforementioned optical film of the aforementioned element mother substrate was contour cut. According to the manufacturing method of the display panel described in item 1 or item 2 of the scope of the patent application, the opposite substrate and the element substrate are cut out in different shapes. The manufacturing method of the display panel as described in the scope of patent application, wherein the outline of the optical film when cutting the opposing mother substrate becomes the opposing side of the display panel when the opposing substrate is cut out The contour of each part of the substrate is smaller, or the contour when the optical film of the element mother substrate is cut is smaller than the contour of each part of the element substrate that becomes the display panel when the element substrate is cut. The manufacturing method of the display panel as described in item 1 or item 2 of the scope of patent application, wherein the reference corresponds to the aforementioned second alignment mark of a plurality of units located around the unit to be cut from among the aforementioned units . The method for manufacturing a display panel as described in the second item of the scope of patent application, wherein when the optical film of the opposing mother substrate is cut along the contour of each part of the opposing substrate of the display panel, or, At the edge When cutting the optical film of the element mother substrate with the contours of each part of the element substrate of the display panel, the cutting is started at least from a position avoiding the wiring portion formed on the element substrate. The method for manufacturing a display panel as described in the second item of the scope of patent application, wherein the optical film of the opposing mother substrate is cut along the contour of each part of the opposing substrate of the display panel. Laser light, and cut at least from the corners of the contour of each part of the counter substrate of the aforementioned display panel, or cut the aforementioned element mother along the contour of each part of the element substrate of the aforementioned display panel In the case of the optical film of the substrate, laser light is used, and cutting is started at least from the corners of the contours of each part of the element substrate of the display panel. The manufacturing method of the display panel as described in the scope of patent application, wherein the excess portion of the optical film of the opposing mother substrate is along the diagonal direction of the optical film of the opposing mother substrate Peeling, or peeling off the excess portion of the optical film of the mother substrate for elements in the diagonal direction of the optical film of the mother substrate for elements. According to the method for manufacturing a display panel described in the first or second patent application, the planar shape of the display panel is a special shape other than a rectangle. The method for manufacturing a display panel as described in the scope of the patent application, wherein the optical film of the opposing mother substrate and the element mother substrate The aforementioned optical film of the plate is a polarizing film. According to the manufacturing method of the display panel described in item 1 or item 2 of the scope of patent application, the aforementioned display panel is a liquid crystal display panel.

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