WO2022080719A1

WO2022080719A1 - Bonding apparatus and bonding method for manufacturing display apparatus

Info

Publication number: WO2022080719A1
Application number: PCT/KR2021/013491
Authority: WO
Inventors: 박용창; 이동율; 이남기; 진연식
Original assignee: 삼성전자주식회사
Priority date: 2020-10-15
Filing date: 2021-10-01
Publication date: 2022-04-21
Also published as: KR20220049872A

Abstract

Disclosed is a bonding apparatus for bonding a display panel and a bezel to manufacture a display apparatus. The present bonding apparatus comprises: an application device for applying a bonding agent to a side surface of a display panel; a lighting device for radiating light for curing processing the bonding agent; a first driving device for moving the application device along a first axis corresponding to one side surface of the display panel; and a second driving device for moving the lighting device along a second axis corresponding to the other side surface of the display panel.

Description

Bonding apparatus and bonding method for manufacturing display device

The present disclosure relates to a bonding apparatus and a bonding method for manufacturing a display device, and more particularly, to a bonding apparatus and bonding method for bonding a display panel and a bezel.

In recent years, various display devices are being used indoors and outdoors. In particular, when the display device is disposed outdoors, a high level of waterproofing and dustproof sealing structure is required because moisture or dust infiltration into the display device may cause malfunctions and shortened lifespan of the display device.

For example, a bonding agent such as UV bond used to bond exterior parts of a display device is applied to the bonding site and then irradiated with light such as ultraviolet light to the applied bonding material to cure the bonding agent. Complete the process.

Conventionally, there is a problem in that the bonding agent is first applied to the entire bonding site and then curing is performed over the same bonding area, so that the process takes a long time from applying the bonding agent to curing.

In addition, if the device for applying the bonding agent and the device for curing the bonding agent by irradiating light are arranged on the same axis and the curing treatment is performed immediately after the bonding agent is applied, the process time is reduced. As the distance between the devices for irradiating the light became closer, light penetrated into the needle for discharging the bonding agent and the needle hole was clogged.

The present disclosure is intended to solve the above-described problems, and an object of the present disclosure is to shorten the process time for bonding the display panel and the bezel by making the application device for applying the bonding agent and the lighting device for irradiating light move on different axes And, to provide a bonding device and a bonding method that can prevent the coating performance degradation of the coating device.

In order to achieve the above object, a bonding device for bonding a display panel and a bezel to manufacture a display device according to an embodiment of the present disclosure includes an application device for applying a bonding agent to a side surface of the display panel, a bonding agent A lighting device irradiating light for curing treatment, a first driving device for moving the application device along a first axis corresponding to one side of the display panel, and a second driving device for moving the lighting device to the other side of the display panel and a second drive device for moving along the axis.

In this case, comprising a processor that controls the application device to apply the bonding agent to the side surface of the display panel, and controls the lighting device to cure the bonding agent by irradiating light to the area to which the bonding agent is applied, the processor when the display panel and the bezel are disposed on the bonding device, control the first driving device so that the applicator moves along the first axis, the applicator moves along the first axis and the display The application device may be controlled to apply the bonding agent to a first side of the side surfaces of the panel.

In this case, in the processor, when the first surface to which the bonding agent is applied is disposed on the second axis and a second surface perpendicular to the first surface among the side surfaces of the display panel is disposed on the first axis, The second driving device may be controlled to move the lighting device along the second axis, and the lighting device may be controlled to emit light to the first surface while the lighting device moves along the second axis.

In this case, the processor controls the first driving device so that the applicator moves along the first axis simultaneously with the movement of the lighting device, the applicator moves along the first axis and the second surface The application device may be controlled to apply the bonding agent to the .

Meanwhile, the bonding device may further include a rotating device for rotating the display panel and the bezel disposed on the bonding device.

In this case, when the application of the bonding agent to the first surface is completed, the processor may rotate the display panel and the bezel to control the rotating device so that the first surface is disposed on the second axis. .

On the other hand, the processor controls the application device and the first driving device to sequentially apply the bonding agent to the plurality of side surfaces of the display panel, and the lighting device and the lighting device to sequentially cure the side surfaces to which the bonding agent is applied. The second driving device may be controlled.

Meanwhile, the processor may control the first driving device and the second driving device so that the distance between the applicator and the lighting device is not closer than a preset distance when the applicator and the lighting device are moved. .

On the other hand, the applicator includes a first applicator and a second applicator, and the first driving device includes a first driving source for moving the first applicator along the first axis and the second applicator. a second driving source for moving along a third axis opposite to the first axis, wherein the lighting device includes a first lighting device and a second lighting device, and the second driving device is configured to move the first lighting device to the first lighting device. It may include a third driving source for moving along the second axis and a fourth driving source for moving the second lighting device along a fourth axis facing the second axis.

On the other hand, the applicator includes a first applicator and a second applicator, and the first driving device includes a first driving source for moving the first applicator along the first axis and the second applicator. a second driving source for moving along a fourth axis opposite to the second axis, wherein the lighting device includes a first lighting device and a second lighting device, wherein the second driving device is configured to move the first lighting device to the first lighting device. A third driving source that moves along a second axis and a fourth driving source that moves the second lighting device along a third axis facing the first axis may be included.

On the other hand, in the bonding method of a bonding device for bonding a display panel and a bezel to manufacture a display device according to an embodiment of the present disclosure, a plurality of display panels are applied through an application device that applies a bonding agent to the side surface of the display panel. A step of sequentially applying a bonding agent to the side of the display panel and sequentially curing the side surface to which the bonding agent is applied through a lighting device irradiating light for curing the bonding agent, wherein one side of the display panel The bonding agent application to the side and the curing treatment to the other side to which the bonding agent is applied are performed simultaneously.

In this case, the bonding method includes: when the display panel and the bezel are disposed on the bonding device, the application device moves along a first axis and applies a bonding agent to a first side of the side surfaces of the display panel; When the first surface to which the bonding agent is applied is disposed on a second axis perpendicular to the first axis, and a second surface of the side surfaces of the display panel that is perpendicular to the first surface is disposed on the first axis, the A lighting device moving along the second axis and irradiating light on the first surface, and simultaneously with the movement of the lighting device, the applicator moves along the first axis to apply a bonding agent to the second surface may include steps.

In this case, the bonding method may further include rotating the display panel and the bezel disposed on the bonding apparatus.

In this case, the rotating may include rotating the display panel and the bezel so that the first surface is disposed on the second axis when the application of the bonding agent to the first surface is completed.

1 is a perspective view of a bonding apparatus according to an embodiment of the present disclosure;

2 is a block diagram illustrating a configuration of a bonding apparatus according to an embodiment of the present disclosure.

3 is a plan view illustrating a display panel and a bezel disposed on a bonding device according to an exemplary embodiment of the present disclosure.

4 is a view for explaining an operation in which a bonding agent is applied to a first surface of the side surfaces of a display panel by an application device.

FIG. 5 is a view illustrating the display panel and the bezel of FIG. 4 being rotated by 90 degrees counterclockwise.

6 is a view for explaining an operation in which the bonding agent applied to the first surface of the display panel by the lighting device is cured and at the same time the bonding agent is applied to the second surface of the display panel by the application device.

7 is a view in which the display panel and the bezel of FIG. 6 are rotated counterclockwise by 90 degrees, the adhesive applied to the second surface of the display panel by the lighting device is cured, and at the same time, the third surface of the display panel by the application device It is a diagram for explaining the operation of applying the bonding agent to the

8 is a view showing the display panel and the bezel of FIG. 7 are rotated counterclockwise by 90 degrees, the bonding agent applied to the third surface of the display panel by the lighting device is cured, and the fourth surface of the display panel by the application device It is a diagram for explaining the operation of applying the bonding agent to the

FIG. 9 is a view for explaining an operation in which the display panel and the bezel of FIG. 8 are rotated counterclockwise by 90 degrees, and the adhesive applied to the fourth surface of the display panel is cured by a lighting device.

10 is a diagram illustrating an embodiment of a bonding device including a plurality of application devices and a plurality of lighting devices.

11 is a diagram illustrating another embodiment of a bonding device including a plurality of application devices and a plurality of lighting devices.

12 is a flowchart illustrating a bonding method of a bonding apparatus according to an embodiment of the present disclosure.

It should be understood that the embodiments described below are illustratively shown to help the understanding of the present disclosure, and the present disclosure may be implemented with various modifications, different from the embodiments described herein. However, in the following description of the present disclosure, if it is determined that a detailed description of a related well-known function or component may unnecessarily obscure the gist of the present disclosure, the detailed description and specific illustration thereof will be omitted. In addition, the accompanying drawings are not drawn to scale in order to help understanding of the disclosure, but dimensions of some components may be exaggerated.

The terms used in this specification and claims have been chosen in consideration of the function of the present disclosure. However, these terms may vary depending on the intention of a person skilled in the art, legal or technical interpretation, and emergence of new technology. Also, some terms are arbitrarily selected by the applicant. These terms may be interpreted in the meanings defined herein, and in the absence of specific definitions, they may be interpreted based on the general content of the present specification and common technical common sense in the art.

In the description of the present disclosure, the order of each step should be understood as non-limiting unless the preceding step must be logically and temporally performed before the subsequent step. In other words, except for the above exceptional cases, even if the process described as the subsequent step is performed before the process described as the preceding step, the essence of the disclosure is not affected, and the scope of rights should also be defined regardless of the order of the steps.

In this specification, expressions such as “have,” “may have,” “include,” or “may include” indicate the presence of a corresponding characteristic (eg, a numerical value, function, operation, or component such as a part). and does not exclude the presence of additional features.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms may be used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

In addition, terms such as 'front', 'rear', 'top', 'bottom', 'side', 'left', 'right', 'top', 'bottom' used in the present disclosure are defined based on the drawings. and the shape and position of each component are not limited by this term.

In addition, since the present specification describes components necessary for the description of each embodiment of the present disclosure, the present disclosure is not necessarily limited thereto. Accordingly, some components may be changed or omitted, and other components may be added. In addition, they may be distributed and arranged in different independent devices.

Further, an embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present disclosure is not limited or limited by the embodiments.

Hereinafter, the present disclosure will be described in more detail with reference to FIGS. 1 to 12 .

Referring to FIG. 1 , the bonding device 100 includes a table 20 on which the display panel 11 and the bezel 12 are disposed, an application device 110 for applying a bonding agent to the side surface of the display panel 11 , and bonding It may include a lighting device 120 irradiating light for curing the agent, a first driving device 210 , and a second driving device 220 .

Referring to FIG. 1 , the first driving device 210 for moving the application device 110 may be disposed on the table 20 , and disposed in a direction perpendicular to the first driving device 210 , the lighting device ( A second driving device 210 for moving 120 may be disposed.

Meanwhile, the display panel 11 and the bezel 12 which are components of the display device 10 may be disposed on the table 20 . The display panel 11 may be disposed on the table 20 while being disposed inside the bezel 12 .

The applicator 110 may apply a bonding agent to the side of the display panel 11 , that is, to the space between the side of the display panel 11 and the bezel 12 . The applicator 110 is connected to the first driving device 210 and can move along a first axis parallel to the arrangement direction of the first driving device 210 (refer to the X-axis direction of the coordinate system), and on the first axis A bonding agent may be applied to one side of the disposed display panel 11 .

The lighting device 120 may irradiate light for curing the bonding agent to one side of the display panel 11 to which the bonding agent is applied by the application device 110 . For example, the bonding agent may be a UV bond, and the lighting device 120 may include a light source that emits ultraviolet light, such as a UV lamp.

The lighting device 120 is connected to the second driving device 220 to move along a second axis parallel to the arrangement direction of the second driving device 220 (refer to the Y-axis direction of the coordinate system), and on the second axis The display panel 11 and the bezel 12 may be bonded by irradiating light to one side of the disposed display panel 11 and curing the applied bonding agent.

Accordingly, the applicator 110 and the lighting device 120 move on different axes, and may perform adhesive application and adhesive curing operations, respectively. A detailed description of a bonding method capable of shortening the bonding process time by utilizing this will be described later with reference to FIGS. 3 to 9 .

Referring to FIG. 2 , the bonding device 100 includes an application device 110 , a lighting device 120 , a first driving device 210 and a second driving device 220 , in addition to a processor 130 for controlling the components may include

The processor 130 may control the overall operation of the bonding apparatus 100 . The processor 130 may be composed of one or a plurality of processors, for example, the processor 130 is a general-purpose processor such as a CPU (Central Processing Unit), an AP (Application Processor), etc., a GPU (Graphic Processing Unit), a VPU ( It may be implemented with a graphics-only processor such as a Vision Processing Unit), or an artificial intelligence-only processor such as a Neural Processing Unit (NPU).

The processor 130 controls the application device 110 to apply the bonding agent to the side surface of the display panel 11 , and controls the lighting device 120 to cure the bonding agent by irradiating light to the area to which the bonding agent is applied. can do.

In addition, the processor 130 may control the first driving device 210 and the second driving device 220 to move the application device 110 and the lighting device 120 , respectively.

For example, the processor 130 controls the application device 110 and the first driving device 210 to sequentially apply the bonding agent to the plurality of sides of the display panel 11 , and control the side to which the bonding agent is applied. The lighting device 120 and the second driving device 220 may be controlled to sequentially perform curing processing.

Specifically, when the display panel 11 and the bezel 12 are disposed on the table 20 of the bonding device 100 , the processor 130 is configured to operate the first driving device such that the application device 110 moves along the first axis. By controlling 210 , the applicator 110 may be controlled so that the applicator 110 moves along the first axis and applies the bonding agent to the first side of the side surfaces of the display panel 11 .

In addition, in the processor 130 , the first surface of the display panel 11 to which the bonding agent is applied is disposed on the second axis, and the second surface of the side surfaces of the display panel 11 that is perpendicular to the first surface is on the first axis. When placed in the illuminating device ( 120) can be controlled.

In this case, the processor 130 controls the first driving device 210 so that the application device 110 moves along the first axis at the same time as the lighting device 120 moves, and the application device 110 moves along the first axis. The applicator 110 may be controlled to move along and apply the bonding agent to the second surface.

Accordingly, the curing operation of the lighting device 120 on the first surface to which the bonding agent is applied and the bonding agent application operation of the application apparatus 110 on the second surface to which the bonding agent is not yet applied are simultaneously performed, so that the display Compared to a bonding process in which a bonding agent is first applied to all the first to fourth surfaces of the panel 11 and then a curing treatment is performed on all the first to fourth surfaces, the process time may be reduced.

As described above, the same bonding process may be performed on all four sides of the display panel 11 . Hereinafter, it will be described in detail with reference to FIGS. 3 to 9 .

3 is a plan view illustrating a display panel and a bezel disposed on a bonding device according to an embodiment of the present disclosure, and FIG. 4 is an operation in which a bonding agent is applied to a first side of the side surfaces of the display panel by an application device. It is a drawing for explanation.

3 and 4 , the application device 110 may be moved on a first axis by the first driving device 210 , and a bonding agent may be applied to the first surface of the display panel 11 .

When the application of the adhesive to the first surface of the display panel 11 is completed, the display panel 11 and the bezel 12 disposed on the table 20 may be rotated so that the first surface is disposed on the second axis. there is. In this case, the display panel 11 and the bezel 12 may be rotated by a rotating device (not shown) including a motor. However, the present invention is not limited thereto, and the display panel 11 and the bezel 12 may be rotated by a person.

5 is a view showing the display panel and the bezel of FIG. 4 rotated 90 degrees counterclockwise, and FIG. 6 is a curing treatment of the bonding agent applied to the first surface of the display panel by the lighting device, and at the same time, the application device It is a view for explaining the operation of applying the bonding agent to the second surface of the display panel by the

Referring to FIG. 6 , the lighting device 120 is moved along the second axis by the second driving device 220 , and is applied to the bonding agent applied to the first surface of the display panel 11 disposed on the second axis. By irradiating light, the adhesive on the first side can be cured. In addition, at the same time as the movement of the lighting device 120, the application device 110 is moved along the first axis by the first driving device 210, on the second surface of the display panel 11 disposed on the first axis. A binder may be applied.

Accordingly, the coating device 110 and the lighting device 120 of the bonding device 100 move at the same time on different axes and perform the bonding process on different sides of the display panel 11, respectively, thereby reducing the overall process time can do.

In addition, the processor 130 is the first driving device 210 so that the distance between the applicator 110 and the lighting device 120 is not closer than a preset distance when the applicator 110 and the lighting device 120 are moved. and the second driving device 220 may be controlled.

Accordingly, a certain distance is maintained between the applicator 110 and the lighting device 120 to prevent the light of the lighting device 120 from penetrating into the needle that the applicator 110 discharges the bonding agent, thereby preventing the applicator. (110) It is possible to prevent a decrease in the coating performance.

7 to 9 , as the display panel 11 and the bezel 12 are sequentially rotated, a bonding process may be performed on all four sides of the display panel 11 .

FIG. 7 illustrates the display panel and the bezel of FIG. 6 being rotated by 90 degrees in the counterclockwise direction. Referring to FIG. 7 , the bonding agent applied to the second surface of the display panel by the lighting device may be cured and, at the same time, the bonding agent may be applied to the third surface of the display panel by the application device.

FIG. 8 is a diagram illustrating that the display panel and the bezel of FIG. 7 are rotated 90 degrees counterclockwise. Referring to FIG. 8 , the bonding agent applied to the third surface of the display panel by the lighting device may be cured and, at the same time, the bonding agent may be applied to the fourth surface of the display panel by the application device.

FIG. 9 illustrates the display panel and the bezel of FIG. 8 being rotated 90 degrees counterclockwise. Referring to FIG. 9 , the bonding agent applied to the fourth surface of the display panel by the lighting device may be cured. Accordingly, curing treatment is completed for all sides of the display panel 11 , and the bonding process between the display panel 11 and the bezel 12 may be completed.

Meanwhile, FIGS. 10 and 11 are diagrams illustrating an embodiment of a bonding device including a plurality of application devices and a plurality of lighting devices.

Referring to FIG. 10 , the applicator 110 includes a first applicator 110-1 and a second applicator 110-2, and the first driving device operates the first applicator 110-1. It may include a first driving source 210-1 for moving along the first axis and a second driving source 210-2 for moving the second applicator 110-2 along a third axis facing the first axis. . In addition, the lighting device 120 includes a first lighting device 120-1 and a second lighting device 120-2, and the second driving device drives the first lighting device 120-1 along a second axis. It may include a third driving source 220-1 that moves and a fourth driving source 220-2 that moves the second lighting device 120-2 along a fourth axis facing the second axis.

However, the arrangement structure of the plurality of applicators, the plurality of lighting devices, and the plurality of driving sources is not limited thereto, and may be implemented in various structures in which the applicator and the lighting device move on different axes. Referring to FIG. 11 , the applicator 110 includes a first applicator 110-1 and a second applicator 110-2, and the first driving device operates the first applicator 110-1. It may include a first driving source 210-1 for moving along the first axis and a second driving source 210-2 for moving the second applicator 110-2 along a third axis facing the first axis. . In addition, the lighting device 120 includes a first lighting device 120-1 and a second lighting device 120-2, and the second driving device drives the first lighting device 120-1 along a second axis. It may include a third driving source 220-1 that moves and a fourth driving source 220-2 that moves the second lighting device 120-2 along a fourth axis facing the second axis.

A plurality of applicators (110-1, 110-2), a plurality of lighting devices (120-1, 120-2), and a plurality of driving devices (210-1, 210-) for moving the respective applicators and lighting devices 2, 220-1, 220-2), the bonding process for the four surfaces of the display panel 11 can be simultaneously performed, thereby further shortening the process time.

Referring to FIG. 12 , in the bonding method of the bonding device according to an embodiment of the present disclosure, the bonding agent is sequentially applied to a plurality of sides of the display panel through an application device for applying the bonding agent to the side surface of the display panel. The step (S1210) and the step (S1220) of sequentially curing the side surface to which the bonding agent is applied through a lighting device irradiating light for curing the bonding agent may be included.

In this case, the application of the bonding agent to one side of the display panel and the curing treatment to the other side to which the bonding agent is applied may occur at the same time.

Accordingly, the application apparatus and the lighting apparatus respectively perform bonding processes on different sides of the display panel, thereby reducing the overall process time.

In the above, preferred embodiments of the present disclosure have been illustrated and described, but the present disclosure is not limited to the specific embodiments described above, and it is common in the technical field to which the disclosure belongs without departing from the gist of the present disclosure as claimed in the claims. Various modifications may be made by those having the knowledge of

Claims

A bonding device for bonding a display panel and a bezel to manufacture a display device, the bonding device comprising:

an applicator for applying a bonding agent to a side surface of the display panel;

a lighting device for irradiating light for curing the bonding agent;

a first driving device for moving the application device along a first axis corresponding to one side of the display panel; and

and a second driving device for moving the lighting device along a second axis corresponding to the other side of the display panel.
According to claim 1,

A processor that controls the application device to apply the bonding agent to the side surface of the display panel, and controls the lighting device to cure the bonding agent by irradiating light to the area to which the bonding agent is applied;

The processor is

When the display panel and the bezel are disposed on the bonding device, controlling the first driving device so that the application device moves along the first axis,

and controlling the applicator so that the applicator moves along the first axis and applies a bonding agent to a first side of the side surfaces of the display panel.
3. The method of claim 2,

The processor is

When the first surface to which the bonding agent is applied is disposed on the second axis and a second surface perpendicular to the first surface among side surfaces of the display panel is disposed on the first axis, the lighting device is configured to operate the second controlling the second drive to move along an axis;

and controlling the lighting device so that the lighting device moves along the second axis and irradiates light to the first surface.
4. The method of claim 3,

The processor is

Simultaneously with the movement of the lighting device, controlling the first driving device so that the applicator moves along the first axis,

and controlling the applicator so that the applicator moves along the first axis and applies the binder to the second surface.
3. The method of claim 2,

The bonding device further comprising a; a rotating device for rotating the display panel and the bezel disposed on the bonding device.
6. The method of claim 5,

The processor is

When the application of the bonding agent to the first surface is completed, the display panel and the bezel are rotated to control the rotating device so that the first surface is disposed on the second axis.
3. The method of claim 2,

The processor is

controlling the application device and the first driving device to sequentially apply the bonding agent to the plurality of sides of the display panel,

A bonding device, wherein the lighting device and the second driving device are controlled to sequentially cure the side surfaces to which the bonding agent is applied.
3. The method of claim 2,

The processor is

A bonding device for controlling the first driving device and the second driving device so that a distance between the applicator and the lighting device is not closer than a preset distance when the applicator and the lighting device are moved.
According to claim 1,

The applicator may include a first applicator; and a second application device;

The first driving device is

a first driving source for moving the first applicator along the first axis; and

a second driving source for moving the second applicator along a third axis facing the first axis;

The lighting device may include: a first lighting device; and a second lighting device;

The second driving device,

a third driving source for moving the first lighting device along the second axis; and

and a fourth driving source for moving the second lighting device along a fourth axis facing the second axis.
According to claim 1,

The applicator may include a first applicator; and a second application device;

The first driving device is

a first driving source for moving the first applicator along the first axis; and a second driving source for moving the second applicator along a fourth axis facing the second axis.

The lighting device may include: a first lighting device; and a second lighting device;

The second driving device,

a third driving source for moving the first lighting device along the second axis; and a fourth driving source for moving the second lighting device along a third axis facing the first axis.
In the bonding method of a bonding device for bonding a display panel and a bezel to manufacture a display device,

sequentially applying a bonding agent to a plurality of sides of the display panel through an application device for applying a bonding agent to the side surfaces of the display panel; and

Including; sequentially curing the side surface to which the bonding agent is applied through a lighting device irradiating light for curing the bonding agent;

A bonding method in which application of a bonding agent to one side of the display panel and a curing treatment to the other side to which the bonding agent is applied are performed simultaneously.
12. The method of claim 11,

when the display panel and the bezel are disposed on the bonding device, moving the application device along a first axis and applying a bonding agent to a first side of the side surfaces of the display panel;

When the first surface to which the bonding agent is applied is disposed on a second axis perpendicular to the first axis, and a second surface perpendicular to the first surface among side surfaces of the display panel is disposed on the first axis, the irradiating light to the first surface while moving along the second axis by a lighting device; and

Simultaneously with the movement of the lighting device, the application device moves along the first axis and applies a bonding agent to the second surface.
13. The method of claim 12,

The bonding method further comprising; rotating the display panel and the bezel disposed on the bonding device.
14. The method of claim 13,

The rotating step is

When the application of the bonding agent to the first surface is completed, the display panel and the bezel are rotated so that the first surface is disposed on the second axis.