WO2021238986A1

WO2021238986A1 - Electronic device

Info

Publication number: WO2021238986A1
Application number: PCT/CN2021/096066
Authority: WO
Inventors: 韩建国; 蔡庆斌
Original assignee: 维沃移动通信有限公司
Priority date: 2020-05-28
Filing date: 2021-05-26
Publication date: 2021-12-02
Also published as: CN111669455A

Abstract

An electronic device, comprising a body (100) and a display module (300). The display module (300) comprises a first display part (310) and a second display part (320) connected to each other. The second display part (320) is a flexible structural member. The display module (300) is movably connected to the body (100), and the display module (300) has a first state and a second state. Under the condition that the display module (300) is in the first state, the first display part (310) is located on the first side of the body (100), one part of the second display part (320) is located on the second side of the body (100) distant from the first side, the other part of the second display part (320) is located on the third side of the body (100), and both the first side and the second side are adjacent to the third side. Under the condition that the display module (300) is in the second state, at least a part of the first display part (310) and at least a part of the second display part (320) are located on the first side of the body (100).

Description

Electronic equipment

cross reference

The present invention claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 202010470946.X and an invention title of "electronic equipment" on May 28, 2020. The entire content of the application is incorporated into the present invention by reference.

Technical field

This application relates to the technical field of communication equipment, and in particular to an electronic device.

Background technique

In response to consumer demand, the display area and screen-to-body ratio of electronic devices have become larger and larger, and foldable electronic devices have become more and more popular with users, which have the characteristics of large display area and portability. The crease of the current foldable electronic device is generally in the middle of the display screen, and the electronic device is folded in or out. The stress in the bending area of the display screen of this type of electronic device is more concentrated. In terms of the service life of the non-bending areas on the opposite sides of the bending area, the service life of the bending area in the display screen is relatively low. Once the bending area fails, the entire display screen cannot continue to be used normally, which will As a result, the overall service life of the display is greatly reduced.

Summary of the invention

The present application discloses an electronic device to solve the current problem that the service life of the bending area of the display screen of the foldable electronic device is relatively low, which causes the overall service life of the display screen to be greatly reduced.

This application adopts the following technical solutions.

An electronic device, comprising: a body; a display module, the display module includes a first display portion and a second display portion, the first display portion and the second display portion are connected to form the display module Group display surface, the second display portion is a flexible structural member, the display module is movably connected to the body, and the display module has a first state and a second state; wherein, in the display module When the group is in the first state, the first display portion is located on the first side of the main body, and a part of the second display portion is located on the second side of the main body away from the first side, The other part of the second display part is located on the third side of the main body, and both the first side and the second side are arranged adjacent to the third side; In the case of the second state, at least a part of the first display portion and the second display portion are both located on the first side of the main body.

The technical solution adopted in this application can achieve the following beneficial effects:

The present application discloses an electronic device, in which a first display portion and a second display portion in a display module are connected, and the second display portion is a flexible structural member, so that when the display module is movably connected to the main body, the display The module can switch between the first state and the second state. When the display module is in the first state, the first display portion is located on the first side of the main body, a part of the second display portion is located on the second side of the main body away from the first side, and another part of the second display portion is located on the main body The third side, the first side and the second side are both adjacent to the third side, to improve the overall portability of the electronic device by folding the display module; when the display module is in the second state, the first At least a part of the display portion and the second display portion are located on the first side of the main body, which can increase the display area of the display module viewed by the user, so that the user can obtain a better viewing experience; and the second display portion is The flexible structural member can move at least a part of the second display part from the second side to the first side by sequentially bending different parts of the second display part. When the above solution is adopted, the second display part is bent The folded area is not unique, and during the movement of the second display portion, most areas in the second display portion can be bent, so that the service life of each area in the second display portion is basically the same. Improve the overall life of the display module.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the application;

Figure 2 is a perspective view of a part of the structure shown in Figure 1;

FIG. 3 is a schematic structural diagram of the electronic device disclosed in an embodiment of the application in another direction;

Figure 4 is a perspective view of a part of the structure shown in Figure 3;

FIG. 5 is a schematic structural diagram of the electronic device disclosed in the embodiment of the application in another state;

6 is a schematic cross-sectional view of the electronic device in a first state according to an embodiment of the application;

FIG. 7 is a schematic cross-sectional view of the electronic device in another state according to the embodiment of the application;

FIG. 8 is a schematic cross-sectional view of the electronic device in a second state according to an embodiment of the application;

FIG. 9 is an assembly diagram of a part of the structure in the electronic device disclosed in the embodiment of the application.

Description of reference signs:

100- body,

300-display module, 310-first display, 320-second display,

400-support roller,

500-matching components, 510-gear, 520-rack,

600-drive unit, 610-drive body, 620-drive shaft,

700-Traction Department.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions disclosed in the various embodiments of the present application will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 9, the present application discloses an electronic device. The electronic device includes a main body 100 and a display module 300. The main body 100 is the installation foundation of other components in the electronic device, and it can be formed of hard materials such as plastic or metal to ensure that the electronic device has high structural strength and reliability.

The display module 300 includes a first display portion 310 and a second display portion 320. The first display portion 310 and the second display portion 320 are connected to form a display module 300. The first display portion 310 and the second display portion 320 together form a display The display surface of the module 300. The second display part 320 is a flexible structure. Optionally, the second display portion 320 is a flexible screen to ensure that the second display portion 320 can be deformed when it has a display function. By splicing adjacent two ends of the first display portion 310 and the second display portion 320 to each other, the first display portion 310 and the second display portion 320 can jointly form the display surface of the display module 300.

The display module 300 is movably connected to the main body 100, and the display module 300 has a first state and a second state, as shown in FIGS. 1, 3, and 6, when the display module 300 is in the first state, The first display portion 310 is located on the first side of the main body 100, a part of the second display portion 320 is located on the second side of the main body 100 away from the first side, and the other part of the second display portion 320 is located on the third side of the main body 100. One side and the second side are both adjacent to the third side, and the overall portability of the electronic device is improved by folding the display module 300. As shown in FIGS. 5 and 8, when the display module 300 is in the second state, at least a part of the first display portion 310 and the second display portion 320 are located on the first side of the main body 100, which can increase the number of users. The viewing area of the display module 300 allows the user to obtain a better viewing experience. In addition, the second display portion 320 is a flexible structure. By sequentially bending different parts of the second display portion 320, at least a part of the second display portion 320 is moved from the second side to the first side. In the solution, the area where the second display portion 320 is bent is not unique, and during the movement of the second display portion 320, most of the area in the second display portion 320 can basically be bent, thereby causing the second display portion 320 to be bent. The service life of each area in the display portion 320 is basically the same, which improves the overall service life of the display module 300.

Further, the second display portion 320 can be arranged in close contact with the main body 100, so that the main body 100 can provide a supporting effect for the second display portion 320 of the flexible structure, thereby increasing the service life of the entire display module 300. In addition, when the second display portion 320 is attached to the main body 100, the display effect of the entire display module 300 can also be improved to a certain extent by preventing the second display portion 320 from lifting. Based on the foregoing, when the display module 300 is in the second state, along the thickness direction of the electronic device, at least part of the first display portion 310 can be extended to the outside of the main body 100. Therefore, when at least a part of the second display part 320 moves from the second side to the first side of the main body 100, by extending at least part of the first display part 310 to the outside of the main body 100, the first display part 310 can be the first The part of the second display part 320 that moves to the first side provides an accommodating space to ensure that the second display part 320 can always be attached to the main body 100, so that the part of the second display part 320 on the first side and the first display part 310 It also provides a display function, expands the display area of electronic devices, and improves user experience.

In addition, the first display portion 310 in the electronic device disclosed in the embodiment of the present application may be a flexible structural member or a rigid structural member. In the case where the first display portion 310 is a flexible structural member, a supporting structure may be provided for the first display portion 310, and during the process of extending the first display portion 310 to the outside of the main body 100, the aforementioned supporting structure may be combined with The first display portion 310 moves together, so as to ensure that the first display portion 310 can always be supported on the aforementioned supporting structure. Optionally, the first display portion 310 is a rigid structural member. In this case, since the first display portion 310 itself has a certain rigidity, when the first display portion 310 extends out of the main body 100, Even if all the first display portion 310 extends out of the main body 100, it can be ensured that the first display portion 310 can stably maintain its original shape and provide a stable display function.

Further, the body 100 includes a first support portion and a second support portion, the first support portion and the second support portion are fixedly connected, the first display portion 310 is supported on the first support portion, and the second display portion 320 is supported on the second support portion. On the supporting part, this can further enhance the supporting effect of the first display part 310 and the second display part 320. Both the first support portion and the second support portion may be plate-shaped structural members to provide better support for the first display portion 310 and the second display portion 320, and when the display module 300 is in the second state , The main body 100 can be isolated from the outside of the electronic device by the second support part, preventing foreign dust, water vapor and other impurities from entering the inside of the electronic device.

Further, both the first display portion 310 and the second display portion 320 can be connected to the main body 100 through a connection structure, so that the entire display module 300 can slide relative to the main body 100 without displaying the display module. 300 and the main body 100 are separated from each other. For example, the display module 300 and the main body 100 may be connected to each other through a sliding groove and a sliding rail assembly, so that the display module 300 can slide along the surface of the main body 100 relative to the main body 100 without being separated from the main body 100.

Further, the electronic device disclosed in the embodiment of the present application further includes a support roller 400, the support roller 400 is rotatably connected to one end of the main body 100, and the second display portion 320 is supported by the support roller 400. During the rotation of the supporting roller 400, the movement stability of the second display portion 320 can be further improved, and the supporting roller 400 can also be used to provide a better supporting effect for the second display portion 320 to prevent the second display portion 320 from moving along the main body. The surface of 100 is bent at a larger angle during the movement, which has a greater adverse effect on the service life of the second display portion 320. In addition, under the action of the supporting roller 400, the second display portion can be further reduced to a certain extent. The degree of bending of the bent portion of the second display portion 320 further enhances the service life of the second display portion 320.

Optionally, the number of support rollers 400 is multiple, and the multiple support rollers 400 are distributed along a direction perpendicular to the thickness direction of the electronic device, and the multiple support rollers 400 can be evenly arranged, so that the multiple support rollers 400 are used as the first More positions on the second display part 320 provide support and stabilization. Alternatively, the support roller 400 may be a round rod-shaped structure, and the axial size of the support roller 400 may be equal to the size of the second display portion 320 in the corresponding direction, which enables the support roller 400 to be any position on the second display portion 320 Provide stable support at the place.

Optionally, the electronic device further includes a mating component 500. The mating component 500 includes a gear 510 and a rack 520. The side of the display module 300 facing the body 100 is fixedly connected to the rack 520, the gear 510 is rotatably connected to the body 100, and the gear 510 It is meshed and connected with the rack 520. When the display module 300 is connected to the main body 100 through the rack 520 and the gear 510, the stability of the relative movement process between the display module 300 and the main body 100 can be further improved, and the display module can be controlled to a certain extent. The speed at which the 300 moves relative to the main body 100 prevents excessive speed from damaging the display module 300 and even the electronic equipment, and improves the service life of the entire electronic equipment.

For example, the gear 510 can be rotatably mounted on the main body 100 through a shaft or other components, and the rack 520 can be fixed on the side of the display module 300 facing the main body 100 by bonding or screw connection. The length of the rack 520 can be determined according to the movement distance of the end of the second display portion 320 away from the first display portion 310, and the length of the rack 520 can be slightly greater than the movement distance of the end of the second display portion 320, thereby It is ensured that the mating component 500 can provide a stable movement process without occupying too much installation space in the electronic device.

Further, the number of gears 510 and racks 520 may be multiple, the multiple gears 510 and the multiple racks 520 are all distributed along the thickness direction perpendicular to the electronic device, and the multiple gears 510 and the multiple racks 520 are one For a corresponding meshing, a plurality of gears 510 are installed on the body 100, and a plurality of racks 520 are fixed on the display module 300. With the cooperation of the plurality of racks 520 and the plurality of gears 510, the display module can be further improved. The stability of the relative movement between the group 300 and the main body 100.

Optionally, the electronic device further includes a driving part 600, which is in transmission connection with the gear 510, and the driving part 600 can drive the display module 300 to switch between the first state and the second state, thereby improving the degree of automation of the electronic device , And when the drive unit 600 drives the display module 300 to move relative to the main body 100, the movement stability of the display module 300 can be further improved; in addition, when the drive unit 600 drives the display module 300, a preset program or Design the overall structure of the driving part 600 and other methods to control the movement distance of the end of the second display part 320 in the display module 300 to prevent the user from manually driving the display module 300 to move. The limit position of the range is damaged.

The driving part 600 may be a driving motor, and the gear 510 may be installed on the driving shaft 620 of the driving motor, so that the driving motor drives the gear 510 to rotate relative to the main body 100 to drive the display module 300 to move through the rack 520. In addition, the direction of rotation of the driving part 600 can be changed by changing the direction of the current input to the driving part 600, so that the driving part 600 can drive the display module 300 to switch from the first state to the second state, and can also drive the display module. 300 switches from the second state to the first state.

In the case where the number of gears 510 and racks 520 are both multiple, the multiple gears 510 may all be connected to the driving part 600, and the multiple racks 520 and the multiple gears 510 may be along a line perpendicular to the first display part 310. The movement directions are distributed at intervals, so as to improve the motion stability of the display module 300 while minimizing the adverse effects of the provision of multiple gears 510 and multiple racks 520 on the installation of other components in the electronic device.

Optionally, the driving part 600 includes a driving body 610 and a driving shaft 620. The driving body 610 is connected to the driving shaft 620. The driving shaft 620 extends in a direction perpendicular to the movement direction of the first display part 310. On the drive shaft 620, the multiple gears 510 can move synchronously under the drive of the drive shaft 620, and drive the multiple racks 520 that mesh with the multiple gears 510 in a one-to-one correspondence. Under the action of the rack 520, At least a part of the second display portion 320 is moved from the second side of the main body 100 to the first side of the main body 100.

Since the second display portion 320 is a flexible structure, when the display module 300 is switched from the first state to the second state, if only the second display portion 320 is pushed, the second display portion 320 will be pushed There may be a tendency to move away from the main body 100 in a direction away from the main body 100, which is likely to adversely affect the service life of the display module 300. Therefore, the rack 520 can be fixed on the first display portion 310. In this case, the first display portion 310 can be driven to move to connect the first display portion 310 and the second display portion 320. The second display portion 320 is driven downward to move together, which can ensure that the second display portion 320 can be stably attached to the main body 100. Of course, in the process of driving the first display portion 310 to move relative to the main body 100, a certain driving force can also be provided to the second display portion 320, which can further prevent the display module 300 from being switched from the first state to the second state. Damage occurred during the state process.

In addition, when the display module 300 is switched from the second state to the first state, the driving mechanism can be reversely rotated to drive the first display portion 310 to return to the original position, and the first display portion 310 to return to the original position During the process, the first display portion 310 can apply a certain pushing force to the second display portion 320 to push the second display portion 320 back to its original position. Optionally, during the process of the display module 300 being switched from the second state to the first state, a certain driving force may be applied to the second display portion 320, so as to ensure that the second display portion 320 can be restored to a more stable and reliable manner. In situ.

In other embodiments of the present application, the mating assembly 500 further includes a traction part 700, the traction part 700 is a flexible structure, and the end of the second display part 320 away from the first display part 310 is connected to the driving part 600 through the traction part 700; That is to say, in the display module 300, the first display part 310 can be connected to the driving part 600 through the combined structure of the gear 510 and the rack 520, and at the same time, the second display part 320 can also be realized through the traction part 700. The purpose of connecting with the driving part 600, in this case, the driving force of the driving part 600 can act on the first display part 310 or the second display part 320, and then the driving part 600 drives the display When the module 300 is switched between the first state and the second state, the motion stability and reliability of the display module 300 can be further improved.

Wherein, when the display module 300 is in the first state, the traction part 700 is wound around the driving part 600, and when the display module 300 is in the second state, at least a part of the traction part 700 is located in the second display part 320. And the driving part 600 between.

For example, when the display module 300 is switched from the second state to the first state, the driving part 600 rotates forward, and under the action of the gear 510 and the rack 520, the first display part 310 gradually moves toward the main body 100. Extends out and drives at least a part of the second display portion 320 to move from the first side to the second side of the main body 100. Since the opposite ends of the traction portion 700 are respectively connected to the second display portion 320 away from the first display portion 310 With the movement of the second display part 320 and the rotation process of the driving part 600, the traction part 700 wound on the driving part 600 is gradually wound up and down from the driving part 600 as the end of the driving part 600 and the second display part 320 move. The unwound part of the pulling part 700 is located between the second display part 320 and the driving part 600 until the display module 300 is in the first state, and the length of the unwound part of the pulling part 700 reaches the maximum value. Conversely, when the display module 300 is switched from the first state to the second state, the driving part 600 rotates in the reverse direction, and under the action of the gear 510 and the rack 520, the first display part 310 extends to the main body 100 The other part can be returned to the original position, and in the process of the first display part 310 returning to the original position and the driving part 600 reversely rotating, on the one hand, the first display part 310 can push the second display part 320 At least a part is moved back from the first side of the main body 100 to the second side of the main body 100. On the other hand, the driving part 600 is wound by the part of the traction part 700 located between the second display part 320 and the driving part 600. Pull the second display part 320 to move away from the first display part 310. Based on the above structure, no matter whether the display module 300 is switched from the first state to the second state or from the second state to the first state, it can ensure that the display module 300 has high motion stability and can basically prevent the first state. The second display portion 320 is tilted relative to the main body 100 during the moving process, which ensures that the display module 300 has a relatively long service life.

As described above, the driving part 600 may include a driving body and a driving shaft 620, the driving shaft 620 is connected to the driving body, the driving shaft 620 extends in a direction perpendicular to the thickness direction of the electronic device, and the traction part 700 may be fixed on the driving shaft 620.

Optionally, the number of the pulling parts 700 may be multiple, and the plurality of pulling parts 700 may be distributed at intervals along a direction perpendicular to the thickness direction of the electronic device. Correspondingly, when there are multiple traction parts 700, one end of each traction part 700 can be connected to the drive shaft 620, and the other end of each traction part 700 is away from the first display part 310 from the second display part 320. The ends are connected. Under the combined action of the multiple traction parts 700, the operation stability of the entire display module 300 can be further improved, thereby increasing the service life of the electronic device.

Based on the above-mentioned embodiment, during the use of the electronic device, the driving part 600 can be activated by applying a certain driving force to the first display part 310 to make the driving part 600 work to drive the display module 300 to move relative to the main body 100. And the driving part 600 can determine the rotation direction according to the direction of the driving force received by the first display part 310, so as to drive the display module 300 to move in a manner that meets the demands of the user.

Alternatively, the electronic device is provided with a control key, which is connected to the driving part 600, and the driving part 600 can be controlled to drive the display module 300 to switch between the first state and the second state through the control key. Optionally, both the control key and the driving part 600 can be connected to the main board of the electronic device, so that the user can control the working state of the driving part 600 through the control key, so that the display module 300 can interact with each other between the first state and the second state. Switch.

Further, the driving part 600 can be controlled to enter different working states by different ways of pressing the control key. For example, the driving part 600 can be controlled to rotate forward or backward through a single pressing and double pressing respectively; or, also The driving part 600 can be controlled to enter different working states by short-time pressing and long-time pressing. Of course, the electronic device can also detect the current relative positional relationship between the display module 300 and the main body 100, etc., when the control key is pressed, the drive unit 600 is controlled to change the relative position between the display module 300 and the main body 100. Positional relationship.

Or, the working state of the driving part 600 can be controlled by the built-in program of the electronic device. For example, the user can interact with the electronic device through the display module 300 with touch function to input corresponding instructions through the display module 300. Make the driving part 600 enter the corresponding working state.

Optionally, the control key is located on a fourth side of the main body 100 away from the third side, and the fourth side, the first side, the third side, and the second side are connected in sequence and arranged around the main body 100. In this case, when the user manipulates the electronic device with one hand or both hands, the operation difficulty of pressing the control key is relatively low, and the setting of the control key can prevent the setting of the control key from adversely affecting the movement process of the display module 300.

The electronic device disclosed in the embodiments of the present application may be a smart phone, a tablet computer, an e-book reader, or a wearable device. Of course, the electronic device may also be other devices, which is not limited in the embodiment of the present application.

The above embodiments of this application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the conciseness of the text, here is No longer.

The above descriptions are only examples of this application, and are not intended to limit this application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the scope of the claims of this application.

Claims

An electronic device including:

Body (100);

A display module (300), the display module (300) includes a first display portion (310) and a second display portion (320), the first display portion (310) and the second display portion (320) ) Connection to form the display surface of the display module (300), the second display portion (320) is a flexible structural member, the display module (300) is movably connected to the body (100), and The display module (300) has a first state and a second state;

Wherein, when the display module (300) is in the first state, the first display portion (310) is located on the first side of the main body (100), and the second display portion (320) ) Is located on the second side of the main body (100) facing away from the first side, another part of the second display portion (320) is located on the third side of the main body (100), and the first Side and the second side are both arranged adjacent to the third side; when the display module (300) is in the second state, the first display portion (310) and the first At least a part of the two display parts (320) are located on the first side of the main body (100).
The electronic device according to claim 1, wherein the second display portion (320) and the main body (100) are arranged in close contact with each other, and when the display module (300) is in the second state , Along the thickness direction of the electronic device, at least part of the first display portion (310) protrudes out of the main body (100), and at least a part of the second display portion (320) is located in the main body ( 100), and supported by the body (100).
The electronic device according to claim 2, wherein the electronic device further comprises a supporting roller (400), the supporting roller (400) is rotatably connected to the third side of the body (100), and the second The display portion (320) is supported by the supporting roller (400).
The electronic device according to claim 2, wherein the electronic device further comprises a mating component (500), the mating component (500) includes a gear (510) and a rack (520), and the display module (300) ) The side facing the body (100) is fixedly connected to the rack (520), the gear (510) is rotatably connected to the body (100), and the gear (510) is connected to the rack (520) Meshing.
The electronic device according to claim 4, wherein the electronic device further comprises a driving part (600), and the driving part (600) is drivingly connected with the gear (510) to drive the display module (300). ) Switch between the first state and the second state.
The electronic device according to claim 5, wherein the driving part (600) comprises a driving body (610) and a driving shaft (620), the driving body (610) is connected with the driving shaft (620), and The driving shaft (620) extends in a direction perpendicular to the moving direction of the first display portion (310), and the number of the gears (510) and the racks (520) are both multiple, and multiple The gear (510) meshes with the plurality of racks (520) in a one-to-one correspondence, and the plurality of gears (510) are all mounted on the drive shaft (620), and the plurality of racks (520) are all fixed In the display module (300), the plurality of gears (510) and the plurality of racks (520) are spaced apart along a direction perpendicular to the moving direction of the first display portion (310).
The electronic device according to claim 5, wherein the rack (520) is fixed to the first display portion (310).
The electronic device according to claim 7, wherein the mating component (500) further comprises a traction part (700), the traction part (700) is a flexible structure, and the second display part (320) is away from the The end of the first display part (310) is connected to the driving part (600) through the traction part (700); when the display module (300) is in the first state, at least a part of the The traction part (700) is wound around the driving part (600); when the display module (300) is in the second state, at least a part of the traction part (700) is located in the second state. Between the display part (320) and the driving part (600).
The electronic device according to claim 2, wherein the body (100) comprises a first support portion and a second support portion, the first support portion and the second support portion are fixedly connected, and the display module When the group (300) is in the first state, the first display portion (310) is supported by the first support portion, and the second display portion (320) is supported by the second support portion, When the display module (300) is in the second state, at least a part of the second display portion (320) is supported by the first support portion.
The electronic device according to claim 2, wherein the first display portion (310) is a rigid structure.