WO2019085276A1

WO2019085276A1 - Bending device and bending method for gate driving region

Info

Publication number: WO2019085276A1
Application number: PCT/CN2018/073083
Authority: WO
Inventors: 蒋国强
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2017-10-30
Filing date: 2018-01-17
Publication date: 2019-05-09
Also published as: CN107863310B; CN107863310A

Abstract

A bending device for gate driving regions of a flexible display panel (10) is used for bending gate driving regions (11) at two ends of the flexible display panel (10). The flexible display panel (10) comprises two oppositely-bent arc-shaped edges (12), and the gate driving regions (11) are extended from an inner surface of the flexible display panel (10). The bending device comprises: an electromagnet (30), a supporting table (20) connected to the surface of the electromagnet (30) and a magnetic body (40) located above the supporting table (20). The flexible display panel (10) is placed on the surface of the supporting table (20), the magnetic body (40) is adhered to the outer surface of the gate driving region (11) facing away from the supporting table (20), and the electromagnet (30) is energized to generate a magnetic field to adsorb the magnetic body (40) so that the magnetic body (40) drives the gate driving region (11) to bend toward the supporting table (20). The bending device for the gate driving regions can bend the gate driving regions (11) quickly and easily, thereby reducing labor cost input.

Description

Bending device and bending method for gate driving region

The present invention claims the priority of the prior application of the application No. 201711062535.1, entitled "Bending Device and Bending Method for a Gate Drive Region", which was filed on October 30, 2017, the contents of which are incorporated herein by reference. The way is incorporated into this text.

Technical field

The present invention relates to the field of liquid crystal display, and in particular to a bending device and a bending method for a gate driving region.

Background technique

The borderless flexible OLED (Organic Light-Emitting Diode) display panel is more and more popular among ordinary users due to its self-illumination, simple structure, fast response, and flexible display. At present, the bending technology of the gate driving region is one of the main technologies for realizing a flexible OLED borderless display panel. The gate driving area of the flexible OLED is bent and attached to the back surface of the flexible display panel, so that the long-side full-screen display effect can be realized. Therefore, in order to quickly and easily bend the gate driving region of the flexible OLED display panel, a simple bending device is required.

Summary of the invention

An object of the present invention is to provide a bending device and a bending method for a gate driving region, which can quickly and easily bend a gate driving region, thereby reducing labor cost.

The present invention provides a gate driving region bending device for a flexible display panel for bending a gate driving region at both ends of a flexible display panel, the flexible display panel including two relatively curved arc edges, the grid a pole driving region extending from an inner surface of the flexible display panel, the bending device comprising: an electromagnet, a carrying platform connected to the surface of the electromagnet, and a magnetic body located above the carrying platform, the flexible display The panel is placed on a surface of the carrier, the magnetic body is attached to the gate driving region facing away from the outer surface of the carrier, and the electromagnet is energized to generate a magnetic field to adsorb the magnetic body to make the magnetic body The gate driving region is bent in the direction of the carrier.

Wherein, the magnetic body is provided with an adhesive surface, and the adhesive surface is adhered to an outer surface of the gate driving region.

Wherein, the gate driving region bending device comprises an airbag and a support platform supporting and driving the airbag to move, the airbag uniformly pressing the outer surface of the gate driving region where the bending occurs.

Wherein the gate driving region bending device comprises a gas pipe connected to the air bag and a gas storage tank communicating with the gas pipe, and the gas in the gas storage tank flows into the air bag through the gas pipe.

The inner surface of the flexible display panel is provided with a double-sided tape, and the gate driving region is bent and adhered to the flexible display panel through the double-sided tape.

The present invention provides a method for bending a gate driving region of a flexible display panel for bending a gate driving region at both ends of a flexible display panel, the flexible display panel including two relatively curved arc edges, a gate driving region extending from an inner surface of the flexible display panel to an edge of the curved edge, the method comprising:

A magnetic body is pasted on an outer surface of the gate driving region at both ends of the flexible display panel, and the magnetic body and the end surface of the curved edge abut each other;

The flexible display panel is placed on the carrying platform, and the bending device presets a preset magnetic field strength and a preset conductive magnetic field time;

The electromagnet is activated, and the magnetic body drives the gate driving region to bend toward the loading platform during the preset magnetic field strength and the preset conduction magnetic field time.

The step of attaching a magnetic body to the outer surface of the gate driving region at both ends of the flexible display panel includes disposing a glue surface on the magnetic body, and the adhesive surface is pasted outside the gate driving region. surface.

Wherein, the preset magnetic field strength ranges from 0.5 to 1 Tesla, and the preset conduction magnetic field time ranges from 2 to 10 seconds.

After the step of starting the electromagnet, after the magnetic body drives the gate driving region to bend toward the loading platform during the preset magnetic field strength and the preset conducting magnetic field, the method further includes starting An air bag that uniformly presses the gate drive region that has been bent at both ends of the flexible display panel.

Wherein activation of the air bag includes opening a gas storage tank, and gas in the gas storage tank flows into the air bag through a gas pipe.

Therefore, in the embodiment of the present invention, the magnetic body attached to the gate driving region of the flexible display panel is placed on the carrying platform, and the magnet is energized, so that the magnetic body drives the gate in the magnetic field generated by the electromagnet. The driving area is bent, so that the gate driving regions at both ends of the flexible display panel are bent along the inner surface of the flexible display panel. The airbag is used to uniformly press the gate driving region of the flexible display panel at the same time, so that the gate driving regions of the flexible display panel and the inner surface of the flexible display panel are closely and evenly adhered. The gate drive region bending device and method can bend the gate drive region quickly and easily, thereby reducing labor input.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural view of a gate driving region bending device according to an embodiment of the present invention.

2 is a plan view showing the structure of a flexible display device according to an embodiment of the present invention.

Fig. 3 is a structural schematic view showing completion of bending of the gate driving region.

4 is a schematic view showing the combined structure of the airbag and the support base of FIG. 1.

FIG. 5 is a schematic flow chart of a method of bending a gate driving region according to an embodiment of the present invention.

Fig. 6 is a schematic view showing the structure of the airbag pressing gate driving region.

Detailed ways

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic structural view of a gate driving region bending device according to the present invention. A gate driving region bending device of the flexible display panel 10 is used for bending the gate driving region 11 at both ends of the flexible display panel 10. The flexible display panel 10 includes two relatively curved arcuate edges 12 that extend from the inner surface of the flexible display panel 10. The gate driving region bending device includes an electromagnet 30, a carrier 20 connected to the surface of the electromagnet 30, and a magnetic body 40 located above the carrier 20. The flexible display panel 10 is placed on the surface of the carrier 20, and the magnetic body 40 is attached to the surface of the gate driving region 11. The electromagnet 30 is energized to generate a magnetic field to cause the magnetic body 40 to bend the gate driving region 11 toward the loading platform 20. .

The gate driving region bending device of the present invention can utilize the magnetic body 40 to drive the gate driving region 11 at both ends of the flexible display panel 10 while being rapidly and stably bent under the action of the magnetic field, thereby avoiding the gate driving region 11 being During the bending process, the flexible display panel 10 is displaced relative to the flexible display panel 10 and cracked or cracked and also reduces labor and material costs.

As shown in FIG. 3, the magnetic body 40 in this embodiment is a flexible magnetic body, and can be stretched and bent in a three-dimensional direction. When the flexible magnetic body drives the gate driving region 11 to be bent under the action of the magnetic field, the gap between the gate driving region 11 and the flexible display panel 10 can be reduced. The flexible magnetic body is provided with a glue surface. The surface of the adhesive surface is provided with a release film. The release film is used to protect the adhesive surface of the surface of the flexible magnetic body from damage. The adhesive surface of the flexible magnetic body is attached to the outer surface of the gate driving region 11. The flexible magnetic body completely overlaps with the gate driving region 11. After the electromagnet 30 is activated, the electromagnet 30 generates a magnetic field, and the flexible magnetic body is bent toward the inner surface of the flexible display panel 10 by the magnetic field, and the bending occurs. The rear gate driving region 11 and the inner surface of the flexible display panel 10 gradually adhere to each other. Therefore, the gate driving region 11 can be bent quickly and easily by the flexible magnetic body under the action of the magnetic field.

In this embodiment, the inner surface of the flexible display panel 10 is provided with a double-sided tape 13, and the gate driving region 11 is bent and adhered to the flexible display panel 10 by the double-sided tape 13. When the magnetic body 40 drives the gate driving region 11 to bend under the action of the magnetic field of the electromagnet 30, the double-sided adhesive 13 can promote the bonding between the gate driving region 11 and the flexible display panel 10, and can also avoid the gate driving. After the region 11 is bent, the distance between the gate driving region 11 and the inner surface of the flexible display panel 10 is increased due to the influence of the restoring force, and the mutual bonding cannot be achieved. Therefore, the double-sided tape 13 is provided on the inner surface of the flexible display panel 10 so that the gate driving region 11 and the flexible display panel 10 can be firmly adhered.

As shown in FIG. 4, the gate drive region bending device includes an airbag 50 and a support table 60 that connects the airbag 50. In the embodiment, the airbag 50 is made of a rubber material, and can be expanded after being filled with a gas to realize the pressing of the gate driving region 11 that has been bent, and can be folded and recovered after the gas is released. Small storage space. In other embodiments, the bladder 50 can also be made of other materials. When the airbag 50 is in the inflated state, the gate driving region 11 that has been bent is simultaneously uniformly pressed by the airbag 50, so that the gate driving region 11 and the flexible display panel 10 at both ends of the flexible display panel 10 are further passed through the double-sided tape 13 The ground is closely and evenly bonded to reduce the gap between the gate driving region 11 and the flexible display panel 10, thereby improving the bonding fastness and the attaching precision of the gate driving region 11 and the flexible display panel. The support table 60 is used to support and drive the movement of the air bag 50. When the flexible display panel 10 is placed on the stage 20, the support table 60 drives the airbag 50 to move such that the airbag 50 is located directly above the flexible display panel 10. When the gate driving region 11 of the flexible display panel 10 has completely fitted to the flexible display panel 10, the support table 60 drives the airbag 50 to move away from the flexible display panel 10. Therefore, by pressing the support table 60 and the airbag 50 against the gate driving region 11, the gate driving region 11 and the flexible display panel 10 can be further closely adhered by the double-sided tape 13.

In the present embodiment, a gas duct (not shown) communicating with the airbag 50 and a gas storage tank communicating with the gas duct are provided inside the support base 60, and the gas in the gas storage tank flows into the airbag 50 through the gas duct. In the present embodiment, there are two gas pipes, one for introducing gas into the air bag 50 and one for recovering the gas in the air bag 50. In other embodiments, the number of gas pipes can be flexibly designed according to actual conditions. Each gas pipe and the air bag 50 is provided with a valve. When the gas is introduced, the first valve of the first gas pipe is opened, and the second valve of the second gas pipe is closed. When the gas is recovered, the first valve of the first gas line is closed and the second valve of the second gas line is opened.

In this embodiment, the gate driving region bending device includes a controller for controlling the operation and the stop of the gate driving region bending device. Specifically, the controller includes a storage unit configured to store parameters such as a preset magnetic field strength, a preset conduction magnetic field time, a preset pressing pressure, and a preset pressing time. a processing unit, configured to control the electromagnet 30, the support table 60, the gas storage tank, the first valve and the second valve according to a preset magnetic field strength, a preset conduction magnetic field time, a preset pressing pressure, and a preset pressing time Open and run. In this embodiment, the storage unit stores the preset magnetic field intensity range of 0.5 to 1 Tesla, the preset conduction magnetic field time is 2 to 10 seconds, and the preset pressing pressure range is 0.1 to 0.5 MPa, and the preset pressing is performed. The time range is 5 to 10 seconds. In other embodiments, the preset magnetic field strength, the preset conduction magnetic field time, the preset pressing pressure, and the preset pressing time may be in other ranges, and are flexibly set according to actual conditions. The processing unit controls the electromagnet 30 to generate a magnetic field according to the preset magnetic field strength, the preset conduction magnetic field time, and the like, and causes the magnetic body 40 to bend the gate driving region 11 under the magnetic field. Furthermore, the gas tank 50 is filled with gas according to the preset pressing pressure and the preset pressing time to control the gas storage tank opening, the first valve opening, and the second valve closing. After the airbag 50 is pressed against the gate drive region 11, the processing unit closes the gas storage tank, closes the first valve and opens the second valve, and recovers the gas in the airbag 50.

In the gate driving region bending device of the present invention, the magnetic body 40 attached to the gate driving region 11 at both ends of the flexible display panel 10 is placed on the carrying table 20, and the magnet 30 is electrically connected, so that the magnetic body 40 is electromagnetically The magnetic field generated by the iron 30 drives the gate driving region 11 to be bent, thereby realizing rapid and stable bending of the gate driving regions 11 at both ends of the flexible display panel 10. The airbag 50 is used to uniformly press the gate driving region 11 in the flexible display panel 10 at the same time, so that the gap between the gate driving regions 11 and the flexible display panel 10 of the flexible display panel 10 is reduced, thereby achieving close adhesion. Hehe. The gate driving region bending device can bend the gate driving region 11 quickly and easily, and can improve the bonding precision and the bonding fastness of the gate driving region 11 and the flexible display panel 10, and can also implement the flexible display panel 10. The gate drive regions 11 at both ends are simultaneously bent, thereby reducing the labor cost.

Referring to FIG. 5 and FIG. 6 , FIG. 5 is a bending method of the gate driving region 11 of the flexible display panel 10 for bending the gate driving region 11 at both ends of the flexible display panel 10 , and the flexible display panel 11 includes two With respect to the curved curved edge 12, the gate driving region 11 extends from the inner surface of the flexible display panel 10 to the edge of the curved edge 12, and includes:

In step S10, the magnetic body 40 is pasted on the outer surface of the gate driving region 11 at both ends of the flexible display panel 10, and the magnetic body 40 and the end surface of the curved edge 12 abut each other; specifically, in this embodiment The magnetic body 40 is a flexible magnetic body, and the flexible magnetic body is provided with a glue surface. The surface of the adhesive surface is provided with a release film. The release film is used to protect the adhesive surface of the surface of the flexible magnetic body from damage. The adhesive surface of the flexible magnetic body is attached to the outer surface of the gate driving region 11. The flexible magnetic body covers the gate driving region 11 so that the bent gate driving region 11 can be completely attached to the flexible display panel 10.

Step S20, the flexible display panel 10 is placed on the carrying platform 20, and the bending device presets a preset magnetic field strength and a preset conductive magnetic field time; in the process, the preset magnetic field strength ranges from 0.5 to 1 tes. Pull, the preset conduction magnetic field time is 2 to 10 seconds. In this embodiment, the pre-preset magnetic field strength of the gate driving region bending device is 0.6 Tesla, and the preset conduction magnetic field time is 5 seconds.

In step S30, the electromagnet 30 is activated, and the magnetic body 40 drives the gate driving region 11 to bend toward the loading platform 20 during the preset magnetic field strength and the preset conduction magnetic field time. The magnetic body 40 causes the gate driving region 11 at both ends of the flexible display panel 10 to be bent quickly and stably under the action of the magnetic field generated by the electromagnet 30.

In this embodiment, the electromagnet 30 is activated, and after the magnetic body 40 is bent toward the loading platform 20 in the direction of the preset magnetic field and the preset magnetic field, the airbag 50 is activated. The airbag 50 simultaneously presses the gate driving region 11 that has been bent at both ends of the flexible display panel 10 at the same time. Specifically, in this embodiment, the storage unit of the controller stores the preset pressing pressure range of 0.1-0.5 MPa, and the preset pressing time range is 5-10 seconds. In other embodiments, the preset pressing pressure and the preset pressing time may be in other ranges. In this process, the preset pressing pressure is 0.1 MPa, and the preset pressing time is 5 seconds. The processing unit of the controller then controls the gas storage tank opening, the first valve opening, and the second valve closing to charge the airbag 50 according to the preset pressing pressure and the preset pressing time. After the airbag 50 is pressed against the gate drive region 11, the processing unit closes the gas storage tank, closes the first valve and opens the second valve, and recovers the gas in the airbag 50. The gate driving region 11 which has been bent at both ends of the flexible display panel 10 is uniformly pressed by the airbag 50, so that the gate driving region 11 is closely attached to the inner surface of the flexible display panel 10 by the double-sided tape 13 In combination, the bonding precision and the bonding fastness of the gate driving region 11 and the flexible display panel 10 are improved.

The method of bending the gate driving region of the flexible display panel 10 of the present invention is realized by the gate driving region bending device. The gate driving region bending method can stably and quickly bend the gate driving region 11 to prevent the gate driving region 11 from shifting relative to the flexible display panel 10 during the bending process and the flexible display panel 10 to be cracked or generated. The cracks can improve the bonding precision and the adhesion fastness of the gate driving region 11 and the flexible display panel 10, and the gate driving region 11 at both ends of the flexible display panel 10 can be quickly bent at the same time, thereby reducing the labor cost.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the claims of the present invention. The equivalent change is still within the scope of the invention.

Claims

A gate driving region bending device for bending a flexible display panel for bending a gate driving region at both ends of a flexible display panel, the flexible display panel comprising two relatively curved arc edges, the gate driving region Extending from an inner surface of the flexible display panel, wherein the bending device comprises: an electromagnet, a carrying platform connected to the surface of the electromagnet, and a magnetic body located above the carrying platform, the flexible display panel Placed on a surface of the carrier, the magnetic body is attached to the gate driving region facing away from the outer surface of the carrier, and the electromagnet is energized to generate a magnetic field to adsorb the magnetic body to make the magnetic body The direction of the carrier drives the gate driving region to bend.
The gate driving region bending device of the flexible display panel according to claim 1, wherein the magnetic body is provided with an adhesive surface, and the adhesive surface is adhered to an outer surface of the gate driving region.
A gate driving region bending device for a flexible display panel according to claim 1, wherein said gate driving region bending means comprises an airbag and a support table supporting and driving said airbag to move, said airbag being uniformly pressed The outer surface of the bent gate drive region occurs.
The gate driving region bending device of a flexible display panel according to claim 3, wherein said gate driving region bending means comprises a gas pipe connected to said air bag and a gas storage tank communicating with said gas pipe The gas in the gas storage tank flows into the air bag through the gas pipe.
The gate driving region bending device of the flexible display panel of claim 4, wherein the inner surface of the flexible display panel is provided with a double-sided tape, and the gate driving region is bent and passed through the double-sided tape Adhered to the flexible display panel.
A bending method of a gate driving region of a flexible display panel for bending a gate driving region at both ends of a flexible display panel, the flexible display panel comprising two oppositely curved arc edges, the gate driving An area extends from an inner surface of the flexible display panel to an edge of the curved edge, wherein the method comprises:

A magnetic body is pasted on an outer surface of the gate driving region at both ends of the flexible display panel, and the magnetic body and the end surface of the curved edge abut each other;

The flexible display panel is placed on the carrying platform, and the bending device presets a preset magnetic field strength and a preset conductive magnetic field time;

The electromagnet is activated, and the magnetic body drives the gate driving region to bend toward the loading platform during the preset magnetic field strength and the preset conduction magnetic field time.
The method of bending a gate driving region of a flexible display panel according to claim 6, wherein the step of attaching the magnetic body to the outer surface of the gate driving region at both ends of the flexible display panel is included in the magnetic body An adhesive surface is provided, and the adhesive surface is adhered to an outer surface of the gate driving region.
The method of bending a gate driving region of a flexible display panel according to claim 6, wherein the predetermined magnetic field strength ranges from 0.5 to 1 Tesla, and the preset conducting magnetic field time is from 2 to 10. second.
The method of bending a gate driving region of a flexible display panel according to claim 6, wherein the electromagnet is activated in the step, and the magnetic body is oriented toward the predetermined magnetic field strength and the preset conducting magnetic field time. After the carrier stage drives the gate driving region to bend, the method further includes activating the airbag, and the airbag simultaneously uniformly presses the gate driving region that has been bent at both ends of the flexible display panel.
The method of bending a gate driving region of a flexible display panel according to claim 9, wherein the actuating the air bag comprises opening a gas storage tank, and gas in the gas storage tank flows into the air bag through a gas pipe.