WO2018193583A1

WO2018193583A1 - Scribing device and scribing method

Info

Publication number: WO2018193583A1
Application number: PCT/JP2017/015909
Authority: WO
Inventors: 信宏米澤
Original assignee: 堺ディスプレイプロダクト株式会社
Priority date: 2017-04-20
Filing date: 2017-04-20
Publication date: 2018-10-25

Abstract

Provided are a scribing device and a scribing method with which breakage of a substrate can be prevented. The scribing device is a scribing device that causes a blade part and a substrate to move relative to each other while pressing the blade part against the substrate to form a scribing line on the substrate. The scribing device is provided with a fixation part that curves and fixes the substrate so that the trajectory of movement of the blade part on the substrate is curved.

Description

Scribing apparatus and scribing method

The present invention relates to a scribing apparatus and a scribing method.

In recent years, liquid crystal displays (LCDs), which are representative of flat panel displays, have become mainstream not only in the field of medium- and small-sized panels but also in the field of large-sized video display panels for TVs. A manufacturing process for such a display panel includes a scribing process for dividing the glass substrate.

For example, a scribe line is formed by placing a substrate on a table having a horizontal placement surface and rolling a scribing wheel attached to the scribe head while pressing with a set load on the surface of the substrate. An apparatus is disclosed (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-203501

In the manufacturing process of the display panel, after attaching an optical sheet such as a polarizing plate to the front and back of a liquid crystal panel having a pair of glass substrates with a liquid crystal in between, an inspection terminal portion provided on the edge of the glass substrate is provided. A scribing process is used to separate. In this step, the liquid crystal panel is sucked and held on the stage provided with the suction holes. However, the edge of the liquid crystal panel cannot be adsorbed, so the edge of the liquid crystal panel warps due to the difference in moisture absorption after the polarizing plate is attached, the difference in thermal expansion of the polarizing plate, or the difference in the curl amount of the polarizing plate. There is a case. When the scribing wheel is pressed against the part where the liquid crystal panel is warped, the glass substrate may be damaged.

The present invention has been made in view of such circumstances, and an object thereof is to provide a scribing apparatus and a scribing method capable of preventing the substrate from being damaged.

A scribing apparatus according to an embodiment of the present invention is a scribing apparatus that forms a scribe line on a substrate by relatively moving the blade portion and the substrate while pressing the blade portion against the substrate. A fixing portion that curves and fixes the substrate so that the movement locus of the blade portion is curved.

A scribing method according to an embodiment of the present invention is a scribing method for forming a scribe line on a substrate by moving the blade portion and the substrate relative to each other while pressing the blade portion against the substrate. The fixing portion curves and fixes the substrate so that the movement locus of the blade portion is curved.

According to the present invention, it is possible to prevent the substrate from being damaged when the scribe line is formed.

It is a schematic diagram which shows an example of a principal part structure of a display panel. It is a top view which shows an example of the principal part structure of a display panel. It is a schematic diagram which shows an example of the planar view of the principal part structure of the scribing apparatus of 1st Embodiment. It is a schematic diagram which shows an example of the cross-sectional state of the principal part structure of the scribing apparatus of 1st Embodiment. It is a schematic diagram which shows an example of the side view of the principal part structure of the scribing apparatus of 1st Embodiment. It is a schematic diagram which shows an example of the mode of the scribing method by the scribing apparatus of this Embodiment. It is a schematic diagram which shows an example of the planar view of the principal part structure of a scribe apparatus as a comparative example. It is a schematic diagram which shows an example of the front view of the principal part structure of the scribing apparatus as a comparative example. It is a schematic diagram which shows an example of a principal part structure of the scribing apparatus of 2nd Embodiment.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating an example of a main configuration of the display panel 10. A display panel (liquid crystal panel) 10 includes a pair of

glass substrates

11 and 12 enclosing liquid crystal therebetween, an optical sheet 13 such as a polarizing plate attached to the surface of one glass substrate 11, and the surface of the other glass substrate 12. And an optical sheet 14 such as a polarizing plate attached to the substrate. An inspection terminal portion 15 used in the inspection process of the display panel 10 is provided on the peripheral portion of one glass substrate 11.

FIG. 2 is a plan view showing an example of a main configuration of the display panel 10. In FIG. 2, for convenience, only the glass substrate 11 provided with the inspection terminal portion 15 is illustrated. Scribe

lines

20, 21, and 22 are formed on the edge of the glass substrate 11 by the scribing device of the present embodiment, and the inspection terminal portion 15 in the glass substrate 11 is provided by the scribing device or the next break process. The peripheral edge is divided. In addition, although the example of FIG. 2 shows the case where a scribe line is formed in three edge parts of the glass substrate 11, the number of scribe lines may be one or two.

FIG. 3 is a schematic diagram illustrating an example of a plan view of a main part configuration of the scribing apparatus of the first embodiment, and FIG. 4 is a schematic diagram illustrating an example of a cross-sectional state of the main part configuration of the scribing apparatus of the first embodiment. FIG. 5 is a schematic diagram showing an example of a side view of the main configuration of the scribing apparatus of the first embodiment. 4 shows a cross-sectional state seen from the reference A in FIG. 3, and FIG. 5 shows a state seen from the direction shown by the reference B in FIG. As shown in the figure, the scribing apparatus includes a stage 30 as a fixing unit. The stage 30 has a placement surface 31 on which the display panel 10 as a substrate is placed. In addition, the mounting surface 31 is provided with a plurality of suction holes 32. The scribing device can suck and fix the display panel 10 to the placement surface 31 by sucking air through the suction holes 32.

The length of one opposing two sides (vertical side in the figure) of the mounting surface 31 is shorter than the length of the side of the display panel 10 in the same direction. That is, the scribe line 20 formed on the display panel 10 protrudes outward from the outer peripheral portion of the stage 30. Further, the length of the other two opposite sides (lateral sides in the figure) of the mounting surface 31 is longer than the length of the side of the display panel 10 in the same direction. In other words, most of the edge of the display panel 10 that is orthogonal to the scribe line 20 is securely fixed by the stage 30.

As shown in FIG. 5, the stage 30 can be moved in the direction indicated by the symbol a by a moving mechanism (not shown). Above the display panel 10 placed on the stage 30, a scribe head 42 to which the blade portion 43 is fixed, and a slider 41 that can move the scribe head 42 in a direction (vertical direction) indicated by a symbol b are disposed. The As will be described later, two sliders 41, scribe heads 42, and blade portions 43 can be provided.

As shown in FIG. 5, the placement surface 31 is placed along the moving direction of the blade portion 43 (specifically, the direction from one end 33 to the other end 33 of the placement surface 31). The surface 31 is curved so that the distance from the both

end portions

33, 33 of the surface 31 to the second reference plane P2 passing through the both

end portions

33, 33 of the mounting surface 31 increases. By placing the display panel 10 on the placement surface 31, for example, the display panel 10 is curved so that the distance between the display panel 10 and the second reference plane P <b> 2 increases toward the center of the display panel 10. It can be fixed to the mounting surface 31. In this specification, in order to make the curved state of the display panel 10 easy to understand, the curved state is shown for convenience and may be different from the actual curved state.

Further, as shown in FIG. 4, according to the scribing apparatus of the present embodiment, the edge forming the scribe line of the display panel 10 protrudes outward from the placement surface 31 of the stage 30. However, since the display panel 10 is curved and fixed to the mounting surface 31 as shown in FIG. 5, the display panel 10 is in contact with the vicinity of the blade portion 43 and the vicinity thereof (for example, indicated by the symbol C). ) Does not warp. 4 shows a cross-sectional state of a portion indicated by reference symbol A in FIG. 3, the edge of the display panel 10 does not warp at any location along the scribe line 20 as in FIG. 4.

FIG. 6 is a schematic diagram showing an example of a scribing method using the scribing apparatus of the present embodiment. In FIG. 6, for convenience, the display panel 10, the two blade portions 43, and the scribe head 42 are illustrated. As shown in FIG. 6, the display panel 10 includes a first side 101, a second side 102 facing the first side 101, a first side 101, a third side 103 orthogonal to the second side 102, and a third side. The fourth side 104 is opposite to the third side 104.

Of the two blade portions 43, one blade portion 43 (lower right side in the drawing, first blade portion) is along a third side 103 orthogonal to the first side 101 and the second side 102 of the display panel 10. Move from the first side 101 to the twenty-second side 102. The other blade portion 43 (the upper left side in the drawing, the second blade portion) moves from the first side 101 along the fourth side 104 facing the third side 103 of the display panel 10 as the one blade portion moves. Move to the second side 102. As shown in FIG. 6, the stage 30 (not shown) has a movement locus of the blade portion 43 on the display panel 10 (specifically, a direction from the first side 101 to the second side 102 of the display panel 10). The display panel 10 is bent and fixed so as to be bent.

More specifically, the display panel 10 includes the first side 101 and the second side 102 from the first side 101 and the second side 102 toward the center of the display panel 10 along the moving direction of the blade part 43. It is curved and fixed so that the distance d to the first reference plane P1 is increased.

The scribe line 20 formed on the display panel 10 is linear in a plan view. When the blade portion 43 and the display panel 10 are moved relative to each other, the display track 10 is curved so that the movement locus is curved along the thickness direction of the display panel 10 as the blade portion 43 moves on the display panel 10. Bend. Thereby, since the display panel 10 is curved along the direction in which the blade portion 43 is pressed, the rigidity of the display panel 10 with respect to the pressing of the blade portion 43 can be increased, and damage to the display panel 10 can be prevented. it can.

Further, the stage 30 (not shown) bends and fixes the display panel 10 so that one surface of the front and back surfaces of the display panel 10 is convex. In the example of FIG. 6, the display panel 10 is bent so that the distance between the center portion of the display panel 10 and the first reference plane P1 is larger than the distance between both end portions of the display panel 10 and the first reference plane P1. It is. When the blade portion 43 is pressed and moved on one surface of the display panel 10, the force from the blade portion 43 is increased in the thickness direction of the display panel 10 from one surface of the display panel 10 toward the other surface ( Acts in the direction of the arrow in the figure. Since the display panel 10 is curved so that the one surface of the display panel 10 has a convex shape, the rigidity of the display panel 10 against the pressing of the blade portion 43 can be increased, and a display when forming a scribe line. Damage to the panel 10 can be prevented.

Further, as shown in FIG. 6, by providing two blade portions 43, a scribe line can be simultaneously formed on the peripheral portions of two opposing sides of the display panel 10.

FIG. 7 is a schematic diagram showing an example of a plan view of a main part configuration of a scribing apparatus as a comparative example, and FIG. 8 is a schematic diagram showing an example of a front view of the main part configuration of a scribing apparatus as a comparative example. FIG. 8 shows a state as seen from the direction indicated by the symbol D in FIG. As shown in the figure, the scribing apparatus includes a table for fixing the display panel 10. The mounting surface of the table is flat, and a plurality of suction holes (not shown) are provided on the mounting surface so that the display panel 10 can be sucked and fixed.

As shown in FIG. 8, since the edge part which forms the scribe line of the display panel 10 protrudes outward from the outer periphery of the table, the edge part of the display panel 10 cannot be adsorbed. When the display panel 10 is warped, the portion of the display panel 10 that is in contact with the table mounting surface is adsorbed and can be corrected to a flat shape, but the edge is not corrected. It remains warped.

In such a state, when the blade portion is moved while being pressed against the display panel 10, a force as indicated by an arrow acts on a portion where the blade portion abuts and its vicinity (for example, indicated by E), Damage such as breakage of the edge of the display panel 10 occurs.

However, according to the scribing apparatus of the present embodiment, since the display panel 10 is curved, the rigidity of the display panel 10 can be increased and the display panel 10 can be prevented from being damaged.

(Second Embodiment)
FIG. 9 is a schematic diagram showing an example of a main part configuration of a scribing apparatus according to the second embodiment. For convenience, FIG. 9 shows only a fixing portion that holds and fixes the display panel 10. The fixing parts are provided at both ends of the chassis 51 and the chassis 51 as a bottom part in which frames are assembled in a lattice shape, and are arranged at necessary positions of the chassis 51 and the chassis 51 to hold the display panel 10. A plurality of support portions 52 that support 10 at the tip 521 are provided.

The sandwiching portion 53 can fix the display panel 10 by sandwiching both edge portions of the display panel 10 from both the front and back surfaces.

Further, as shown in FIG. 9, the chassis 51 has a moving direction of the blade portion 43 (specifically, a direction from one end 511 of the chassis 51 toward the other end 511, a method indicated by reference sign F). A support portion 52 having a larger distance from the chassis 51 to the tip 521 is disposed from the both end portions 511 of the chassis 51 toward the center portion. By supporting the display panel 10 with the support portion 52, for example, the display panel 10 can be curved and fixed so that the distance d between the display panel 10 and the chassis 51 increases toward the center of the display panel 10. it can.

Note that the configuration of the fixed portion is not limited to the configuration illustrated in FIG. For example, a plate-like chassis may be used instead of the chassis 51 in which the frame body is assembled in a lattice shape. Moreover, the number of the support parts 52 is not limited to the example of FIG. 9, More support parts can be provided. In addition, the dimension indicated by the symbol d is a convenient dimension for making it easy to understand the curved state, and may be different from the actual dimension. Moreover, you may comprise so that the front-end | tip part of a support part may be connected along the direction orthogonal to the moving direction of a blade part, and may become a rod shape.

As described above, according to the scribing device of each embodiment, since the display panel 10 is curved in advance, the rigidity or correction force of the portion pressed by the blade portion 43 can be increased. Breakage can be prevented.

In the above-described embodiment, the display panel (liquid crystal panel) has been described as an example of the substrate. However, the substrate is not limited to the liquid crystal panel, and any substrate that requires a sliver process may be used. Embodiments can be applied.

The scribing device according to the present embodiment is a scribing device that forms a scribe line on the substrate by relatively moving the blade portion and the substrate while pressing the blade portion against the substrate. A fixing portion is provided for bending and fixing the substrate so that the movement locus of the blade portion is curved.

The scribing method according to the present embodiment is a scribing method for forming a scribe line on the substrate by relatively moving the blade portion and the substrate while pressing the blade portion against the substrate. The fixing portion curves and fixes the substrate so that the movement locus of the blade portion is curved.

The fixing unit bends and fixes the substrate so that the movement locus of the blade on the substrate is curved. The scribe line formed on the substrate is linear in plan view. By curving and fixing the substrate, the movement trajectory of the blade portion is curved. That is, when the blade portion and the substrate are moved relative to each other, the substrate is bent so that the movement locus is bent along the thickness direction of the substrate as the blade portion moves on the substrate. Thereby, since the board | substrate is curved along the direction which a blade part presses, the rigidity of the board | substrate with respect to the press of a blade part can be improved, and the failure | damage of the board | substrate at the time of forming a scribe line can be prevented. .

In the scribing apparatus according to the present embodiment, the fixing portion bends and fixes the substrate so that one of the two surfaces of the substrate is convex.

The fixing part is configured to bend and fix the substrate so that one of the two surfaces of the substrate is convex. When the blade portion is pressed and moved on one surface of the substrate, the force from the blade portion acts in the thickness direction of the substrate from one surface of the substrate toward the other surface. Since the substrate is curved so that the one surface of the substrate is convex, the rigidity of the substrate against the pressing of the blade portion can be increased, and the substrate can be prevented from being damaged.

In the scribing apparatus according to the present embodiment, the blade portion extends in a direction substantially orthogonal to the first side and the second side from the first side of the substrate to the second side of the substrate facing the first side. The fixed portion moves the first side and the second side from the first side and the second side toward the center of the substrate along the moving direction of the blade part. The substrate is bent and fixed so that the distance to the first reference plane including the distance increases.

The blade portion moves on the substrate in a direction substantially orthogonal to the first side and the second side from the first side of the rectangular substrate to the second side of the substrate facing the first side. The fixing portion increases in distance from the first side and the second side of the substrate along the moving direction of the blade portion toward the center portion of the substrate to the first reference plane including the first side and the second side. The substrate is bent and fixed.

Since the fixing portion bends and fixes the substrate so that the distance between the substrate and the first reference plane including the first side and the second side of the substrate increases toward the central portion of the substrate, the blade portion is the first. As the substrate moves in a direction substantially perpendicular to the side and the second side, the substrate is curved along the direction in which the blade is pressed (for example, the thickness direction of the substrate), and the blade is pressed. The rigidity of the substrate can be increased, and the substrate can be prevented from being damaged.

In the scribing apparatus according to the present embodiment, the fixed portion has a placement surface on which the substrate is placed, and the placement surface has both end portions of the placement surface along the moving direction of the blade portion. As it goes from the center to the center, it is curved so that the distance to the second reference plane passing through both ends of the mounting surface is increased.

The fixing portion has a placement surface on which the substrate is placed, and the placement surface passes through both end portions of the placement surface from the both end portions of the placement surface toward the central portion along the moving direction of the blade portion. 2 Curved so as to increase the distance to the reference plane. By placing the substrate on the placement surface, for example, the substrate can be curved and fixed so that the distance between the substrate and the second reference plane increases toward the center of the substrate.

In the scribing apparatus according to the present embodiment, the fixed portion includes a bottom portion and a plurality of support portions that are disposed on the bottom portion and support the substrate at the tip, and the bottom portion has a moving direction of the blade portion. The support portion is disposed such that the distance from the bottom portion to the tip end increases from both ends of the bottom portion toward the central portion.

The fixed portion includes a bottom portion and a plurality of support portions disposed on the bottom portion and supporting the substrate at the tip portion. The bottom portion has a tip portion extending from the bottom portion toward the center portion along the moving direction of the blade portion. A support portion having a large distance to is disposed. By supporting the substrate with the support portion, for example, the substrate can be curved and fixed so that the distance between the substrate and the bottom portion increases toward the center of the substrate.

The scribing apparatus according to the present embodiment includes two blade portions, and the first blade portion of the two blade portions is on the first side of the substrate and the second side opposite to the first side. It moves from the first side to the second side along a substantially orthogonal third side, and the second blade part of the two blade parts moves to the third side along with the movement of the first blade part. It moves from the first side to the second side along the opposing fourth side.

The first blade portion of the two blade portions moves from the first side to the two sides along the third side of the substrate orthogonal to the first side and the second side of the substrate, The second blade portion moves from the first side to the second side along the fourth side facing the third side of the substrate along with the movement of the first blade portion. Thereby, a scribe line can be formed simultaneously on the peripheral portions of two opposite sides of the substrate.

Also, the configurations described in the above-described embodiments can be combined with each other, and a new technical feature can be formed by combining the configurations.

DESCRIPTION OF SYMBOLS 10 Display panel 101 1st edge | side 102 2nd edge | side 103 3rd edge | side 104 4th edge |

side

11, 12

Glass substrate

13, 14 Optical sheet 15 Inspection

terminal part

20, 21, 22 Scribe line 30 Stage 31 Mounting surface 32 Suction hole 33 End portion 41 Slider 42 Scribe head 43 Blade portion 51 Chassis 511 End portion 52 Support portion 521 Tip 53 Holding portion

Claims

A scribing device that forms a scribe line on the substrate by relatively moving the blade and the substrate while pressing the blade against the substrate,
A scribing device comprising a fixing portion that curves and fixes the substrate so that the movement locus of the blade portion on the substrate is curved.
The fixing part is
The scribing apparatus according to claim 1, wherein the substrate is curved and fixed so that one of the two front and back surfaces of the substrate is convex.
The blade portion is
Moving on the substrate in a direction substantially perpendicular to the first side and the second side from the first side of the substrate to the second side of the substrate facing the first side;
The fixing part is
The distance from the first side and the second side to the central portion of the substrate along the moving direction of the blade part increases to the first reference plane including the first side and the second side. The scribing apparatus according to claim 1 or 2, wherein the substrate is bent and fixed.
The fixing part is
A mounting surface for mounting the substrate;
The mounting surface described above is
The curved portion is formed such that a distance from the both end portions of the placement surface to the center portion along the moving direction of the blade portion increases toward the second reference plane passing through both end portions of the placement surface. The scribing device described in 1.
The fixing part is
The bottom,
A plurality of support portions arranged at the bottom and supporting the substrate at the tip,
The scribing device according to claim 3, wherein the support portion is arranged such that a distance from the bottom portion to the tip end increases from both ends of the bottom portion toward the center portion along the moving direction of the blade portion. .
Two blades are provided,
The first blade portion of the two blade portions is formed from the first side to the second side along a third side substantially orthogonal to the first side of the substrate and the second side opposite to the first side. Go to
The second blade part of the two blade parts moves from the first side to the second side along the fourth side opposite to the third side as the first blade part moves. The scribing device according to any one of claims 1 to 5.
A scribing method for forming a scribe line on the substrate by relatively moving the blade portion and the substrate while pressing the blade portion against the substrate,
A scribing method in which the fixing portion curves and fixes the substrate so that the movement locus of the blade portion on the substrate is curved.