WO2014201726A1

WO2014201726A1 - Device and method for cutting liquid crystal display panel

Info

Publication number: WO2014201726A1
Application number: PCT/CN2013/078538
Authority: WO
Inventors: 宋涛
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2013-06-20
Filing date: 2013-06-30
Publication date: 2014-12-24
Also published as: CN103353681B; CN103353681A

Abstract

A device and method for cutting a liquid crystal display panel (10) are provided. The device for cutting the liquid crystal display panel (10) comprises a machine table (40), cutting mechanisms (20, 30) and a rotating mechanism (50), wherein the machine table (40) is used for bearing the liquid crystal display panel (10), the cutting mechanisms (20,30) are used for cutting the edges of the liquid crystal display panel (10), the rotating mechanism (50) enables the liquid crystal display panel (10) to rotate relative to the machine table (40), and the cutting mechanisms (20,30) and the rotating mechanism (50) are arranged above the machine table (40). The device for cutting the liquid crystal display panel (10) comprises the rotating mechanism (50) enabling the liquid crystal display panel (10) to rotate relative to the machine table (40), so that in the cutting process, the rotating mechanism (50) can be used for changing the relative position between the liquid crystal display panel (10) and the cutting mechanism (20, 30), and two sides or a plurality of sides of the mother board (12) on the CF side can be cut.

Description

Cutting device and cutting method for liquid crystal panel

The invention belongs to the technical field of liquid crystal panel manufacturing, and in particular relates to a cutting device and a cutting method for a liquid crystal panel. Background technique

The liquid crystal panel is a main component of a liquid crystal flat panel display or the like. The liquid crystal panel usually includes a TFT side mother substrate and a CF side mother substrate bonded to the TFT side mother substrate. In the process of performing automatic alignment of the liquid crystal, it is necessary to apply a predetermined voltage to the electrical terminals of the voltage application region on the TFT side mother substrate. Generally, the CF side of the liquid crystal panel is cut off by the processing tool to expose the voltage application region on the TFT side mother substrate. The cutting device of the current liquid crystal panel can only cut one side of the CF side mother substrate. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a cutting device for a liquid crystal panel which can cut two or more sides of a CF side mother substrate.

The present invention is achieved by the following technical solutions: A cutting device for a liquid crystal panel, wherein the cutting device of the liquid crystal panel includes a machine that carries a liquid crystal panel, a cutting mechanism that cuts an edge of the liquid crystal panel, and the liquid crystal The rotation mechanism of the panel relative to the rotation of the machine, the cutting mechanism and the rotation mechanism are disposed above the machine.

As a further improvement of the above technical solution, the cutting mechanism includes a first cutting mechanism and a second cutting mechanism, and the first cutting mechanism and the second cutting mechanism are disposed on opposite sides of the machine table.

As a further improvement of the above technical solution, the cutting mechanism is disposed at a side edge of the machine table. As a further improvement of the above technical solution, the rotating mechanism is for rotating the liquid crystal panel by 90 degrees with respect to the machine table.

As a further improvement of the above technical solution, the rotating mechanism has a vacuum chuck for sucking and lifting the liquid crystal panel.

As a further improvement of the above technical solution, the vacuum chuck includes a fixing bracket, and a plurality of suction nozzles disposed on the fixing bracket. As a further improvement of the above technical solution, the fixing bracket has a cross shape or a square shape. As a further improvement of the above technical solution, the fixing bracket has a rotating shaft, the plurality of suction nozzles are evenly distributed around the rotating shaft, and the distance between the nozzles and the center of the rotating shaft is equal to each other. Road connection.

As a further improvement of the above aspect, the rotating mechanism has a rotary motor that drives the rotation of the rotary shaft, and a lift motor that drives the rotary shaft to move up and down.

According to another aspect of the present invention, a cutting method of a liquid crystal panel is further provided, wherein the cutting method of the liquid crystal panel comprises the following steps:

Positioning step, positioning the liquid crystal panel above the machine;

a first cutting step of cutting the first edge and the second edge of the liquid crystal panel by using the first cutting mechanism and the second cutting mechanism;

In the rotating step, the liquid crystal panel is sucked and raised by the rotating mechanism, the liquid crystal panel is rotated by 90 degrees with respect to the machine table, and then the liquid crystal panel is repositioned above the machine table;

In the second cutting step, the third edge and the fourth edge of the liquid crystal panel are cut by the first cutting mechanism and the second cutting mechanism.

As a further improvement of the above technical solution, the first cutting mechanism and the second cutting mechanism are disposed on opposite sides of the machine table.

As a further improvement of the above technical solution, the first cutting mechanism and the second cutting mechanism are disposed at side edges of the machine table.

As a further improvement of the above technical solution, the rotating mechanism is for rotating the liquid crystal panel by 90 degrees with respect to the machine table.

As a further improvement of the above technical solution, the vacuum chuck includes a fixing bracket, and a plurality of suction nozzles disposed on the fixing bracket.

As a further improvement of the above technical solution, the fixing bracket has a cross shape or a square shape. As a further improvement of the above technical solution, the fixing bracket has a rotating shaft, the plurality of suction nozzles are evenly distributed around the rotating shaft, and the distance between the nozzles and the center of the rotating shaft is equal to each other. Road connection. , As a further improvement of the above aspect, the rotation mechanism has a rotation motor that drives the rotation of the rotary shaft, and an elevation motor that drives the rotation of the rotary shaft.

The beneficial effects of the present invention are: The cutting device of the liquid crystal panel of the present invention includes a rotating mechanism for rotating the liquid crystal panel relative to the machine table, so that the liquid crystal panel and the cutting mechanism can be changed by the rotating mechanism during the cutting process. The relative position between the two can cut the two sides or sides of the CF side mother substrate.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a liquid crystal panel before cutting by a cutting device for a liquid crystal panel according to an embodiment of the present invention.

Fig. 2 is another schematic cross-sectional view of the liquid crystal panel before cutting by the cutting device of the liquid crystal panel according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view showing a liquid crystal panel after cutting by a cutting device of a liquid crystal panel according to an embodiment of the present invention.

Fig. 4 is a perspective view showing a cutting device using a liquid crystal panel according to an embodiment of the present invention.

Fig. 5 is a perspective view showing a liquid crystal panel before cutting by a cutting device of a liquid crystal panel according to an embodiment of the present invention.

Fig. 6 is a schematic plan view showing a vacuum chuck of the cutting device of the liquid crystal panel of Fig. 4.

Figure 7 is a side elevational view of the vacuum chuck of Figure 6.

FIG. 8 is a flow chart showing a method of cutting a liquid crystal panel according to an embodiment of the present invention. detailed description

The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 3, the liquid crystal panel 10 includes a TFT side mother 11 and a CF side mother substrate 12 bonded to the TFT side mother substrate 11. A plurality of thin film transistor substrates arranged in a matrix can be formed on the TFT side mother substrate 11. A plurality of color filter substrates may be formed on the CF side mother substrate 12. In the process of performing automatic alignment of the liquid crystal, it is necessary to apply a prescribed voltage to the TFT side mother-side 11 . Therefore, the liquid crystal panel 10 needs to be cut to remove a part of the edge of the CF side mother substrate 12, thereby exposing the voltage application region on the TFT side substrate 11 (for example, the voltage application regions 14, 15 shown in FIG. 3). . The invention In the cutting device of the liquid crystal panel, the liquid crystal panel 10 is cut by a single-sided cutting machine. When the cutting is performed by the single-sided cutting machine, the liquid crystal panel 10 is cut by a processing tool.

In the cutting device for a liquid crystal panel according to the present invention, a rotating mechanism that can rotate the liquid crystal panel is provided on a base of the cutting mechanism (for example, a single-sided cutting machine), and the rotating mechanism can rotate the liquid crystal panel by 90°. The relative position of the liquid crystal panel relative to the machine table and the cutting mechanism can be adjusted to satisfy the cutting of the two edges, the three edges or all four edges of the liquid crystal panel.

As shown in FIG. 4, in the cutting device for a liquid crystal panel of the present embodiment, the cutting device 100 of the liquid crystal panel includes a machine table 40 that carries the liquid crystal panel 10, and a cutting mechanism that cuts an edge of the liquid crystal panel 10, The rotating mechanism 50 of the liquid crystal panel 10 is rotated relative to the machine table 40. The cutting mechanism and the rotating mechanism 50 are disposed above the machine table 40. In this embodiment, the rotating mechanism 50 is configured to rotate the liquid crystal panel 10 by 90 degrees with respect to the machine table 40. Of course, the rotating mechanism 50 can also be configured to rotate the liquid crystal panel 10 by 180 degrees or other suitable angle with respect to the machine table 40.

As shown in FIG. 5, the liquid crystal panel 10 has a first edge 16, a second edge 17, a third edge 18, and a fourth edge 19. The first edge 16 and the second edge 17 are disposed opposite each other. The third edge 18 and the fourth edge 19 are disposed opposite each other. 5 is not labeled with the TFT side mother and the CF side, and is only used to schematically show the relative positions of the first edge 16, the second edge 17, the third edge 18, and the fourth edge 19.

In this embodiment, the cutting mechanism includes a first cutting mechanism 20 and a second cutting mechanism 30. The first cutting mechanism 20 and the second cutting mechanism 30 are disposed on opposite sides of the machine table 40. And the first cutting mechanism 20 and the second cutting mechanism 30 are disposed at positions corresponding to the first edge 16 and the second edge 17 of the liquid crystal panel 10. Moreover, the first cutting mechanism 20 and the second cutting mechanism 30 are disposed at side edges of the machine table 40. The first cutting mechanism 20 is provided with a processing tool 23; the second cutting mechanism 30 is provided with a processing tool 33.

In this embodiment, the first cutting mechanism 20 and the second cutting mechanism 30 are above the liquid crystal panel 10, the rotating mechanism 50 is above the first cutting mechanism 20 and the second cutting mechanism 30, the first cutting mechanism 20 and the second cutting The mechanism 30 can be freely moved away from the liquid crystal panel 10 by a driving device (not shown) to prevent the liquid crystal panel 10 from hitting the first cutting mechanism 20 and the second cutting mechanism 30 during the ascending or rotating process. And damaged. In addition, the first cutting mechanism 20 and the second cutting mechanism 30 may be disposed under the liquid crystal panel 10, and the rotating mechanism 50 may be disposed above the liquid crystal panel 10, thereby The interference of the first cutting mechanism 20 and the second cutting mechanism 30 with the rotating mechanism 50 is avoided.

In the cutting device of the liquid crystal panel of the present embodiment, the rotating mechanism 50 has a vacuum chuck 60 for sucking and lifting the liquid crystal panel 10. The rotating mechanism 50 also has a housing 70 for mounting the vacuum chuck 60. A structure such as a pipe connected to a vacuum source (not shown), a drive motor for driving the rotating mechanism 50, and the like may be disposed in the casing 70.

An exemplary vacuum chuck 62 of the vacuum chuck 60 is shown in FIGS. 6 and 7. Of course, the vacuum chuck 60 can also take other structural forms. As shown in FIGS. 6 and 7, the vacuum chuck 62 includes a fixed bracket 650 and a plurality of suction nozzles 612, 622 disposed on the fixed bracket 650. Moreover, the fixing bracket 650 has a cross shape, but the present invention is not limited thereto, and the fixing bracket 650 may also have a square shape. Moreover, the fixing bracket 650 has a rotating shaft 610. The plurality of suction nozzles 612, 622 are evenly distributed around the rotation axis 610. The outermost nozzles 612 and 622, which are equal in distance from the center of the rotating shaft 610, are connected by a line 640. As shown in Figs. 6 and 7, on the fixing bracket 650, six suction nozzles 612 are provided along the longitudinal direction X of the liquid crystal panel 10, and six suction nozzles 622 are provided along the width direction Y of the liquid crystal panel 10. The suction nozzles having the same distance from the center of the rotary shaft 610 are connected through the pipe, so that the suction force for sucking up the liquid crystal panel 10 is more uniform, and the suction operation is more reliable.

The rotating mechanism 50 has a rotary motor 632 that drives the rotation of the rotary shaft 610, and an elevation motor 634 that drives the rotary shaft 610 to move up and down. A rotary motor 632 and a lift motor 634 can be mounted within the housing 70.

Specifically, under the action of the hoist motor 634, the rotating mechanism 50 can be moved up and down in the vertical direction Z to lift the liquid crystal panel 10. On the other hand, under the action of the rotary motor 632, the rotary mechanism 50 can be rotated by a predetermined angle, for example, 90 degrees, about the rotational direction R, thereby changing the relative position of the liquid crystal panel 10 with respect to the cutting mechanism.

As shown in FIG. 8, the present invention also provides a cutting method of the liquid crystal panel 10. As shown in FIG. 4, FIG. 5 and FIG. 8, the cutting method of the liquid crystal panel 10 includes the following steps: positioning step S1, positioning the liquid crystal panel 10 above the machine table 40; first cutting step S2, using the first cutting mechanism The processing tool 23 of the processing tool 23 of 20 and the processing tool 33 of the second cutting mechanism 30 cut the first edge 16 and the second edge 17 of the liquid crystal panel 10; in step S3, the liquid crystal panel 10 is sucked and lifted by the vacuum chuck of the rotating mechanism 50, The liquid crystal panel 10 is rotated 90 degrees with respect to the machine table 40, and then the liquid crystal panel 10 is repositioned above the machine table 40; a second cutting step S4, using the processing tool 23 of the first cutting mechanism 20 and the second cutting The processing tool 33 of the mechanism 30 cuts the third edge 18 and the fourth edge 19 of the liquid crystal panel 10. By Thereby, the cutting of all the edges of the liquid crystal panel 10 is achieved. In the present embodiment, two cutting mechanisms, that is, the first cutting mechanism 20 and the second cutting mechanism 30 are provided at the same time, but only one cutting mechanism may be provided, and the liquid crystal panel 10 is realized by rotating the liquid crystal panel 10 times or more. The cutting of multiple edges.

According to the cutting apparatus of the liquid crystal panel of the present invention, since the rotation mechanism for rotating the liquid crystal panel with respect to the machine table is added, the relative position between the liquid crystal panel and the cutting mechanism can be changed by the rotation mechanism during the cutting process. The cutting of two or more sides of the CF side mother substrate can be realized. The cutting device and the cutting method of the liquid crystal panel of the present invention are particularly suitable for the case where a voltage is applied to the three sides or four edges of the liquid crystal panel by using ultraviolet light alignment on the TFT side mother substrate.

The present invention has been described in detail in the above embodiments, but these are not intended to limit the invention. The scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the present invention are included in the scope of the claims.

Claims

claims

1. A cutting device for a liquid crystal panel, wherein the cutting device for the liquid crystal panel includes a machine platform carrying the liquid crystal panel, a cutting mechanism for cutting the edge of the liquid crystal panel, and a cutting mechanism for making the liquid crystal panel relative to the machine. The cutting mechanism and the rotating mechanism are arranged above the machine table.

2. The cutting device of the liquid crystal panel according to claim 1, wherein the cutting mechanism includes a first cutting mechanism and a second cutting mechanism, and the first cutting mechanism and the second cutting mechanism are arranged on the machine. Opposite sides of the stage.

3. The cutting device of the liquid crystal panel according to claim 1, wherein the cutting mechanism is provided at the side edge of the machine table.

4. The cutting device of the liquid crystal panel according to claim 1, wherein the rotation mechanism is used to rotate the liquid crystal panel 90 degrees relative to the machine table.

5. The cutting device of the liquid crystal panel according to claim 1, wherein the rotating mechanism has a vacuum suction cup for sucking and lifting the liquid crystal panel.

6. The cutting device of the liquid crystal panel according to claim 5, wherein the vacuum suction cup includes a fixed bracket and a plurality of suction nozzles arranged on the fixed bracket.

7. The cutting device of the liquid crystal panel according to claim 6, wherein the fixed bracket is in a cross shape or a rice shape.

8. The cutting device of the liquid crystal panel according to claim 7, wherein the fixed bracket has a rotation axis, the plurality of suction nozzles are evenly distributed around the rotation axis, and between the center of the rotation axis and the Suction nozzles at equal distances are connected by pipelines.

9. The liquid crystal panel cutting device according to claim 8, wherein the rotating mechanism has a rotating motor that drives the rotating shaft to rotate, and a lifting motor that drives the rotating shaft to move up and down.

10. A method of cutting a liquid crystal panel, wherein the method of cutting a liquid crystal panel includes the following steps:

Positioning step: Position the LCD panel above the machine;

The first cutting step uses the first cutting mechanism and the second cutting mechanism to cut the first edge and the second edge of the liquid crystal panel;

In the rotating step, a rotating mechanism is used to absorb and lift the liquid crystal panel, so that the liquid crystal panel is rotated 90 degrees relative to the machine, and then the liquid crystal panel is repositioned above the machine; In the second cutting step, the first cutting mechanism and the second cutting mechanism are used to cut the third edge and the fourth edge of the liquid crystal panel.

11. The method of cutting a liquid crystal panel according to claim 10, wherein the first cutting mechanism and the second cutting mechanism are provided on opposite sides of the machine table.

12. The method of cutting a liquid crystal panel according to claim 10, wherein the first cutting mechanism and the second cutting mechanism are provided at the side edges of the machine table.

13. The method of cutting a liquid crystal panel according to claim 10, wherein the rotation mechanism is used to rotate the liquid crystal panel 90 degrees relative to the machine table.

14. The method of cutting a liquid crystal panel according to claim 13, wherein the rotating mechanism has a vacuum suction cup for sucking and lifting the liquid crystal panel.

15. The method of cutting a liquid crystal panel according to claim 14, wherein the vacuum suction cup includes a fixed bracket and a plurality of suction nozzles arranged on the fixed bracket.

16. The method of cutting a liquid crystal panel according to claim 15, wherein the fixing bracket is in a cross shape or a rice shape.

17. The method of cutting a liquid crystal panel according to claim 16, wherein the fixed bracket has a rotation axis, the plurality of suction nozzles are evenly distributed around the rotation axis, and between the center of the rotation axis and the Suction nozzles with equal distances are connected by pipelines.

18. The liquid crystal panel cutting method according to claim 17, wherein the rotating mechanism has a rotating motor that drives the rotating shaft to rotate, and a lifting motor that drives the rotating shaft to move up and down.