CN107181838B - Flexible display device and mobile terminal with same - Google Patents

Abstract

The invention discloses a flexible display device, comprising a flexible screen that can be bent at least in part, a first casing and a second casing supporting the flexible screen; and a flexible display device connected to the first casing and the first casing The elastic metal sheet between the two shells. When the flexible display device provided by the present invention is applied, the excellent elasticity of the elastic metal sheet is used, and when the display device needs to be bent for display, the first shell and the second shell are bent toward the middle to drive the connection to the first shell and the second shell. The elastic metal sheets of the first casing and the second casing are elastically deformed, and the corresponding supporting flexible screen is flexibly deformed. When the flexible screen needs to be restored to its original state, it is only necessary to pull the first casing and the second casing to the outside, and the elastic metal sheet can spring back to the original state, thereby driving the flexible screen to return to the original state. The above-mentioned structure is simple and reliable, the production cost is low, and the recovery operation of the flexible screen is simpler. The present invention also discloses a mobile terminal including the above-mentioned flexible display device.

Description

A flexible display device and a mobile terminal having the same

technical field

The present invention relates to the technical field of display devices, and more particularly, to a flexible display device, and also to a mobile terminal including the flexible display device.

Background technique

With the rapid development of science and technology in recent years, the practical experience of mobile phones has also been greatly impacted. From the early candy bar to today's touch-screen operation, from the early feature phones to today's smart phones, both appearance and function are all Earth-shaking changes are taking place. However, mobile phone screens have long been limited to hard glass screens.

In recent years, with the continuous introduction of flexible screens, it will be a major technical problem how to achieve matching bending in the hardware structure of mobile phones. At present, the more common structure is the chain hinge structure, that is, the flexible screen is supported by the multi-section supporting section plates connected in a chain shape.

The hardware structure determines the bending effect of the mobile phone, but the above hinge structure is relatively complex, the product stability is poor, the cost is high, and the production yield is low, which is not conducive to mass production.

To sum up, how to effectively solve the problems of complex supporting structure, poor product stability and high cost of the flexible screen is an urgent problem to be solved by those skilled in the art at present.

SUMMARY OF THE INVENTION

In view of this, the first object of the present invention is to provide a flexible display device whose structural design can effectively solve the problems of complex supporting structure, poor product stability and high cost of the flexible screen. An object is to provide a mobile terminal including the above-mentioned flexible display device.

In order to achieve the above-mentioned first purpose, the present invention provides the following technical solutions:

A flexible display device, comprising a flexible screen at least partially bendable, a first casing and a second casing supporting the flexible screen; further comprising a connection between the first casing and the second casing elastic metal sheet between.

Preferably, in the above-mentioned flexible display device, the elastic metal sheet has a groove concave toward one side of the flexible screen to limit the maximum bending angle of the elastic metal sheet.

Preferably, in the above flexible display device, the minimum distance between the elastic metal sheet and the flexible screen is a preset distance.

Preferably, in the above-mentioned flexible display device, the groove is a strip-shaped groove, and the length direction of the strip-shaped groove is consistent with the direction of the distance between the first casing and the second casing.

Preferably, in the above flexible display device, the width of the groove gradually decreases from the notch to the groove bottom.

Preferably, the above-mentioned flexible display device includes a plurality of the grooves arranged in parallel and juxtaposed.

Preferably, in the above flexible display device, the elastic metal sheet is a manganese alloy steel sheet.

Preferably, in the above flexible display device, two ends of the elastic metal sheet are respectively detachably and fixedly connected to the first casing and the second casing.

Preferably, in the above flexible display device, a flexible buffer pad is arranged between the elastic metal sheet and the flexible screen.

The flexible display device provided by the present invention includes a flexible screen, a first casing, a second casing and an elastic metal sheet. Wherein, at least part of the flexible screen can be bent; the first casing and the second casing are used to support the flexible screen; and the elastic metal sheet is connected between the first casing and the second casing.

When the flexible display device provided by the present invention is applied, the excellent elasticity of the elastic metal sheet is used, and when the display device needs to be bent for display, the first shell and the second shell are bent toward the middle to drive the connection to the first shell and the second shell. The elastic metal sheets of the first casing and the second casing are elastically deformed, and the corresponding supporting flexible screen is deformed to realize flexible display. When the flexible screen needs to be restored to its original state, it is only necessary to pull the first casing and the second casing to the outside, and the elastic metal sheet can spring back to the original state, thereby driving the flexible screen to return to the original state. To sum up, the bending is realized through the elastic metal sheet and the flexible screen, the structure is simple and reliable, and the production cost is low. Moreover, the rapid rebound of the elastic metal sheet makes the recovery operation of the flexible screen easier, thereby improving the user experience.

In order to achieve the above second objective, the present invention also provides a mobile terminal, which includes any of the above flexible display devices. Since the above-mentioned flexible display device has the above-mentioned technical effects, a mobile terminal having the flexible display device should also have corresponding technical effects.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a front structure of a flexible display device according to a specific embodiment of the present invention;

Fig. 2 is the reverse side structure schematic diagram of Fig. 1;

FIG. 3 is a schematic diagram of a bending state of the flexible display device shown in FIG. 1;

4 is a cross-sectional view of a manganese alloy steel sheet.

The figures are marked as follows:

Flexible screen 1 , first casing 2 , second casing 3 , elastic metal sheet 4 , groove 41 .

Detailed ways

The embodiment of the present invention discloses a flexible display device, so as to improve product stability and reduce cost.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1-FIG. 4. FIG. 1 is a schematic diagram of a front structure of a flexible display device according to a specific embodiment of the present invention; FIG. 2 is a schematic diagram of a reverse side structure of FIG. 1; FIG. 3 is a bending state of the flexible display device shown in FIG. 1. Schematic diagram; Figure 4 is a cross-sectional view of a manganese alloy steel sheet.

In one embodiment, the flexible display device provided by the present invention includes a flexible screen 1 , a first casing 2 , a second casing 3 and an elastic metal sheet 4 .

Wherein, at least a part of the flexible screen 1 can be bent, for example, it includes a curved portion and flat portions located on both sides of the curved portion. The entire flexible screen 1 can also be bent as needed. Specifically, the flexible screen 1 can be an organic light emitting diode panel, which has good bendability. Of course, other structures of the flexible screen 1 may also be used, and the prior art may be referred to for details, which will not be repeated here.

The first shell 2 and the second shell 3 are used to support the flexible screen 1. The first shell 2 and the second shell 3 refer to the structure used to support the flexible screen 1 from both sides. Specifically, the first shell 2 and the second shell 3 The structure of the second shell 3 may not be limited. In the case where the flexible screen 1 includes a curved portion and flat portions located on both sides of the curved portion, the first housing 2 and the second housing 3 respectively support the flat portions on both sides. In the case where the flexible screen 1 is a curved part as a whole, the first casing 2 and the second casing 3 can act on the edges on both sides of the flexible screen 1 to support. Specifically, the above-mentioned first casing 2 and second casing 3 can be fixedly connected to the flexible screen 1 to support them.

The elastic metal sheet 4 is connected between the first casing 2 and the second casing 3 and is disposed at least corresponding to the part of the flexible screen 1 that can be bent. It should be noted that the elastic metal sheet 4 here refers to a pure metal sheet or a metal alloy sheet that has elasticity to drive the flexible screen 1 to bend and recover. In the case where the flexible screen 1 includes a curved portion and flat portions located on both sides of the curved portion, the elastic metal sheet 4 is disposed corresponding to the curved portion of the flexible screen 1, and elastically deforms with the bending of the elastic metal sheet 4 to drive the flexible screen 1 to move flexibly Bending, when the elastic metal sheet 4 elastically recovers, it drives the flexible screen 1 to recover its deformation accordingly.

When the flexible display device provided by the present invention is applied, the excellent elasticity of the elastic metal sheet 4 is used, and when the display device needs to be bent for display, the first housing 2 and the second housing 3 are bent to the middle to drive the display device. The elastic metal sheet 4 connected to the first casing 2 and the second casing 3 is elastically deformed, and the corresponding supporting flexible screen 1 is flexibly moved to realize flexible display. When the flexible screen 1 needs to be restored to its original state, it is only necessary to pull the first casing 2 and the second casing 3 to the outside, and the elastic metal sheet 4 can spring back to the original state, thereby driving the flexible screen 1 to return to its original state. initial state. The support of the flexible screen 1 by the elastic metal sheet 4 can effectively reduce the stress concentration in the curved portion of the flexible screen 1, reduce damage to the bending position, and improve the reliability of the flexible display device. To sum up, the flexible metal sheet 4 cooperates with the flexible screen 1 to realize bending, the structure is simple and reliable, and the production cost is low. Moreover, the rapid rebound of the elastic metal sheet 4 makes the recovery operation of the flexible screen 1 easier, thereby improving the user experience.

Further, the elastic metal sheet 4 has a positioning portion for limiting the maximum bending angle of the elastic metal sheet 4 . Preferably, the elastic metal sheet 4 has a groove 41 concave toward one side of the flexible screen 1 to limit the maximum bending angle of the elastic metal sheet 4 . That is, the positioning portion is the groove 41 . By arranging the groove 41 on the elastic metal sheet 4 , when the elastic metal sheet 4 is bent, the groove 41 tends to be extended and deformed into a plane, and a stress concentration is formed at the groove 41 . Therefore, the elastic metal sheet 4 is limited by the groove 41, and can remain stationary at the maximum bending angle after being bent to the maximum bending angle, thereby facilitating the user to use the function of bending the screen. At the same time, the limitation of the maximum bending angle can also protect the flexible screen 1 from excessive bending. The grooves 41 are concave toward one side of the flexible screen 1 , so when the flexible screen 1 is bent from both sides to the middle to form the concave state of the flexible screen 1 , the maximum bending angle of the elastic metal sheet 4 is limited by the grooves 41 . According to needs, when the flexible screen 1 can be bent from both sides to the middle so that the flexible screen 1 is in a convex state, the grooves 41 of the elastic metal sheet 4 can also be correspondingly arranged to be concave toward the opposite side of the flexible screen 1 . That is, the concave direction of the groove 41 is set to be opposite to the bending direction of the flexible screen 1 , thereby effectively limiting the maximum bending angle of the elastic metal sheet 4 .

It should be noted that the specific data of the maximum bending angle can be set as required, which is not specifically limited here. And according to the specific maximum bending angle, the setting position, number, size, shape, etc. of the grooves 41 are correspondingly adjusted to correspond to the maximum bending angle.

Specifically, the groove 41 can be a U-shaped groove 41 , that is, the cross-section of the groove 41 is U-shaped. During the bending process of the U-shaped structure with the elastic metal sheet 4 , the two side walls of the U-shaped structure are prone to stress concentration deformation, thereby The maximum bending angle of the elastic metal sheet 4 is limited. Of course, the groove 41 with a V-shaped cross section or other shapes can also be considered as required, as long as it can limit the maximum bending angle of the elastic metal sheet 4 .

Preferably, the minimum distance between the elastic metal sheet 4 and the flexible screen 1 is a preset distance. It should be noted that the minimum distance between the elastic metal sheet 4 and the flexible screen 1 refers to the minimum distance between the elastic metal sheet 4 and the flexible screen 1 during the process from the initial state to the bending state of the flexible display device. The minimum distance is when the elastic metal sheet 4 is bent to the limit position. The minimum distance is set to a preset interval, so even after bending, there will be no interference between the elastic metal sheet 4 and the flexible screen 1, which protects and supports the flexible screen 1 during unfolding and recombination, avoiding the need for flexible screens. 1 Damaged by external force. The size of the specific preset interval can be set as required, which is not specifically limited here.

Further, the grooves 41 are strip-shaped grooves 41 , and the length direction of the strip-shaped grooves 41 is consistent with the spacing direction between the first casing 2 and the second casing 3 . That is, as shown in FIG. 2 , the longitudinal direction of the strip groove 41 is the up-down direction in the figure, which is the same as the spacing direction between the first casing 2 and the second casing 3 . In this way, the side walls on both sides of the width direction of the groove 41 are more likely to be deformed by stress concentration with the bending of the elastic metal sheet 4 , thereby limiting the maximum bending angle of the elastic metal sheet 4 .

Furthermore, the width of the groove 41 gradually decreases from the notch to the groove bottom. That is, the side wall in the width direction is an inclined wall, so that stress concentration and deformation occur at the junction of the inclined wall with the slot and the bottom of the slot during bending, so as to limit the maximum bending angle of the elastic metal sheet 4 .

In each of the above embodiments provided with grooves 41, it is preferable to include a plurality of grooves 41 arranged in parallel and juxtaposed. The multiple grooves 41 work together to limit the maximum bending angle of the elastic metal sheet 4, thereby further improving the reliability of the structure. And according to different requirements for the maximum bending angle, the number of grooves 41 can be adjusted to meet different maximum bending angles.

On the basis of the above embodiments, the elastic metal sheet 4 is a manganese alloy steel sheet. The manganese alloy steel sheet has excellent elastic function, which can realize the bending and restoring functions of the flexible screen 1, and the cost is low. Specific parameters such as the type, carbon content, and manganese content of the manganese alloy steel can be set as required, and are not specifically limited here. Of course, other pure metals or alloys with excellent elasticity can also be used as the elastic metal sheet 4 as required.

In the above embodiments, the two ends of the elastic metal sheet 4 are detachably and fixedly connected to the first casing 2 and the second casing 3 respectively. Furthermore, when the elastic metal sheet 4 is aged or its reliability is lowered due to fatigue elasticity, the elastic metal sheet 4 can be easily replaced or maintained. Furthermore, a plurality of elastic metal sheets 4 corresponding to different maximum bending angles can be included, so that different elastic metal sheets 4 can be correspondingly replaced according to different application scenarios of the flexible display device to meet the requirements of different maximum bending angles, thereby improving the performance of the flexible display device. The versatility of the first casing 2 and the second casing 3 further reduces the production cost.

Specifically, the elastic metal sheet 4 can be bonded to the first casing 2 and the second casing 3, which is easy to operate, has high reliability, and occupies a very small space. Of course, other conventional mechanical connection methods for detachable fixed connection can also be used as required. Specifically, the flexible screen 1 and the first casing 2 and the second casing 3 can also be fixed by bonding.

In order to buffer the vibration of the flexible screen 1 caused by the flexible screen 1 flexibly deformed when the elastic metal sheet 4 is bent or restored, a flexible buffer pad, such as a sponge pad, may be arranged between the elastic metal sheet 4 and the flexible screen 1 . Thus, the flexible screen 1 is further protected from damage caused by vibration. As required, a flexible buffer pad may also be provided between the flexible screen 1 and the first casing 2 and the second casing 3 to further buffer vibration.

The above technical solution is described below with a preferred embodiment.

The flexible display device includes a flexible screen 1 , a first casing 2 , a second casing 3 and a manganese alloy steel sheet. Wherein, at least part of the flexible screen 1 can be bent. The first casing 2 and the second casing 3 are used to support the flexible screen 1 . The manganese alloy steel sheet is connected between the first casing 2 and the second casing 3, and the manganese alloy steel sheet has a concave groove 41 on one side of the flexible screen 1 to limit the maximum bending angle of the manganese alloy steel sheet. The thickness of the manganese alloy steel sheet is not more than 0.2mm, preferably 0.2mm, the width of the manganese alloy steel sheet is not less than 35mm, and a groove 41 with a depth of not less than 0.6mm and a width of 5mm is imprinted on it, and the groove 41 The distance between the two ends in the length direction of the manganese alloy steel sheet is not more than 1mm. Both ends of the casing, namely the first casing 2 and the second casing 3 are respectively bent toward the middle of the flexible screen 1, when the groove 41 tends to be folded flat, that is, the manganese alloy steel sheet is bent to the limit. When it needs to be restored, the first shell 2 and the second shell 3 are broken outward by hand, and the manganese alloy steel sheet will rebound immediately, and the flexible screen 1 will follow the rebound to complete a bending recovery function.

Based on the flexible display device provided in the above embodiments, the present invention further provides a mobile terminal, where the mobile terminal includes any one of the flexible display devices in the above embodiments. Since the mobile terminal adopts the flexible display device in the above-mentioned embodiments, please refer to the above-mentioned embodiments for the beneficial effects of the mobile terminal.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A flexible display device, comprising a flexible screen (1) that can be bent at least in part, a first casing (2) and a second casing (3) supporting the flexible screen (1); characterized in that, It also includes an elastic metal sheet (4) connected between the first casing (2) and the second casing (3), and the flexible metal sheet (4) has a flexible screen (1) on the elastic metal sheet (4). ) a concave groove (41) on one side to limit the maximum bending angle of the elastic metal sheet (4), the groove (41) is closed by the edge arranged in the middle of the elastic metal sheet (4) and a groove whose edge is spaced apart from the edge of the elastic metal sheet (4). 2 . The flexible display device according to claim 1 , wherein the minimum distance between the elastic metal sheet ( 4 ) and the flexible screen ( 1 ) is a preset distance. 3 . 3 . The flexible display device according to claim 1 , wherein the groove ( 41 ) is a strip-shaped groove ( 41 ), and a length direction of the strip-shaped groove ( 41 ) and the first The casing (2) and the second casing (3) have the same spacing direction. 4. The flexible display device according to claim 1, wherein the width of the groove (41) gradually decreases from the notch to the groove bottom. 5. The flexible display device according to claim 1, characterized by comprising a plurality of said grooves (41) arranged in parallel and juxtaposed. 6 . The flexible display device according to claim 1 , wherein the elastic metal sheet ( 4 ) is a manganese alloy steel sheet. 7 . 7. The flexible display device according to any one of claims 1-5, characterized in that two ends of the elastic metal sheet (4) are respectively connected to the first shell (2) and the second shell The body (3) is detachable fixed connection. 8. The flexible display device according to any one of claims 1-5, wherein a flexible buffer pad is provided between the elastic metal sheet (4) and the flexible screen (1). 9. A mobile terminal, comprising the flexible display device according to any one of claims 1-8.

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