CN214175567U

CN214175567U - Display device with adjustable curvature

Info

Publication number: CN214175567U
Application number: CN202022589755.3U
Authority: CN
Inventors: 单建中
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-09-10
Anticipated expiration: 2030-11-10

Abstract

The utility model provides a display device with adjustable curvature relates to display device technical field. The display device with the adjustable curvature comprises a flexible display panel and a back plate, wherein a flexible frame is arranged at the edge of the flexible display panel, a magnetic layer made of a magnetic material is arranged on the back side surface of the flexible display panel, the back plate is arranged on the back side of the flexible display panel, an electromagnet mechanism is arranged on one side, facing the flexible display panel, of the back plate, a certain gap is formed between the magnetic layer and the electromagnet mechanism, and the gap is a deformation reserved area of the flexible display panel; the electromagnet mechanism comprises a plurality of electromagnets which are arranged in a matrix shape, and the magnetism of each electromagnet is adjusted by adjusting the voltage value of each electromagnet, so that the electromagnets and the magnetic layer attract or repel each other to change the curvature of the flexible display panel. Display device with adjustable camber can adjust flexible display panel's camber, but camber adjustable range is bigger.

Description

Display device with adjustable curvature

Technical Field

The utility model relates to a display device technical field, in particular to display device with adjustable curvature.

Background

With the continuous development of display technology, curvature-adjustable display devices are gradually appearing in the market. The display device can change the curvature according to the observation position and the observation angle of a user, thereby providing more natural and more comfortable visual perception for the user, and when the number of viewers is large or the observation positions are scattered, the display device can also present a plane state, thereby providing a wider observation angle.

At present, a display device with adjustable partial curvature drives a certain point or a certain edge of a flexible display device to move through a mechanical transmission structure, so that the flexible display device deforms, and the curvature of the display device is changed. However, the curvature adjusting device needs a mechanical transmission structure, and on one hand, the process of installing the mechanical transmission structure is complex; on the other hand, the space required by the mechanical transmission mechanism is larger, so that the whole volume of the display device is larger and the thickness of the display device is larger. In addition, the mechanical transmission mechanism can only be connected with one or more points of the flexible display device, the curvature can be changed by driving the one or more points to move, and the curvature adjusting range is limited.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a curvature-adjustable display device to solve the above technical problems.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a display device with adjustable curvature comprises a flexible display panel and a back plate, wherein a flexible frame is arranged at the edge of the flexible display panel, the flexible frame and the back plate are assembled in a sliding mode through a guide structure, a magnetic layer made of magnetic materials is arranged on the rear side face of the flexible display panel, the back plate is arranged on the rear side of the flexible display panel, an electromagnet mechanism is installed on one side, facing the flexible display panel, of the back plate, a certain gap is formed between the magnetic layer and the electromagnet mechanism, and the gap is a deformation reserved area of the flexible display panel; the electromagnet mechanism comprises a plurality of electromagnets which are arranged in a matrix shape, and the magnetism of each electromagnet is adjusted by adjusting the voltage value of each electromagnet, so that the electromagnets and the magnetic layer attract or repel each other to change the curvature of the flexible display panel.

Preferably, the curvature-adjustable display device further comprises a supporting plate, the supporting plate is arranged below the flexible display panel and connected with the back plate frame, and rolling members are arranged on the bottom surface of the flexible frame and can roll relative to the supporting plate.

Preferably, the bottom surface of flexible frame is provided with the mounting groove, the rolling member is the ball, more than half of the region of ball is located in the mounting groove, the mounting groove with the shape phase-match of ball.

Preferably, the bottom surface of flexible frame is provided with the boss, the mounting groove set up in the boss.

Preferably, the number of the balls is multiple, and the balls are arranged at intervals along the length direction on the bottom surface of the flexible frame.

Preferably, the number of the balls is multiple, and the balls are arranged at intervals in a matrix shape on the bottom surface of the flexible frame.

Preferably, an elastic film is connected between the bottom front edge of the flexible frame and the top edge of the supporting plate.

Preferably, the curvature-adjustable display device further comprises a controller and a face recognition sensor, the face recognition sensor is mounted on the front side surface of the flexible frame or the top of the back plate, and the controller is respectively in control connection with the electromagnet mechanism and the face recognition sensor.

Preferably, the back plate is provided with a plurality of grooves, the electromagnets are arranged in one-to-one correspondence with the grooves, and the electromagnets are respectively embedded in the corresponding grooves.

Compared with the prior art, the display device with adjustable camber of the utility model has the following advantages:

in the curvature-adjustable display device provided by the application, the rear side face of the flexible backboard is provided with the magnetic layer, the front side of the backboard is provided with the electromagnet mechanism, and a certain gap is formed between the magnetic layer and the electromagnet mechanism. Because the electromagnet mechanism comprises a plurality of electromagnets which are arranged in a matrix shape, the magnetism of each electromagnet can be adjusted by adjusting the current direction of the electromagnet, so that the electromagnet attracts or repels the magnetic layer, and the magnetic force of the electromagnet can be adjusted by adjusting the voltage value of the electromagnet, so that the attraction force or the repulsion force of the electromagnet can be adjusted. When the electromagnet attracts the magnetic layer, the magnetic layer moves towards the direction close to the electromagnet, so that the flexible display panel deforms to be closer to the electromagnet. When the electromagnet is a repulsive magnetic layer, the magnetic layer moves towards the direction far away from the electromagnet, so that the flexible circuit board is deformed to be far away from the electromagnet. The magnitude of the magnetic force can be changed by changing the value of the voltage value of the electromagnet, so that the flexible circuit board has different deformation amplitudes. So set up, after the circular telegram, according to the selection of camber, to the different voltage value of the electro-magnet switch-on in different regions, according to the magnetism size of the voltage value adjustment electro-magnet of difference, and then adjust the electromagnetic force between flexible display module and the electro-magnet, according to the size and the direction of electromagnetic force, the magnetic layer drives flexible display panel and warp to the camber is predetermine in formation, in order to satisfy user's demand.

The electromagnets are distributed in a matrix shape, so that the electromagnets can be adjusted in a certain area or at any point in a pneumatic mode as a curvature center, the curvature adjusting range is larger, and the screen formed after adjustment is richer in state.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a front view of a curvature-adjustable display device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at C;

fig. 4 is a first schematic view illustrating an assembly of balls in a curvature-adjustable display device according to an embodiment of the present invention;

fig. 5 is a second schematic view illustrating an assembly of balls in a curvature-adjustable display device according to an embodiment of the present invention;

fig. 6 is a top view of a curvature adjustable display device according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken at B-B of FIG. 6;

fig. 8 is a schematic diagram illustrating a deformation of a curvature-adjustable display device at a first viewing angle according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a deformation of a curvature-adjustable display device at a second viewing angle according to an embodiment of the present invention.

Description of reference numerals:

1-a flexible display panel; 2-a flexible frame; 3-a guiding structure; 4-a supporting plate; 5-rolling balls; 6-an electromagnet; 8-a back plate; 9-boss; 10-a magnetic layer; 11-a viewer; 12-a facial recognition sensor; 13-elastic film.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

Referring to fig. 1 to 9, an embodiment of the present invention provides a display device with adjustable curvature, including a flexible display panel 1 and a back plate 8, where the edge of the flexible display panel 1 is provided with a flexible frame 2, and the flexible frame 2 and the back plate 8 are assembled by sliding through a guiding structure 3. The rear side surface of the flexible display panel 1 is provided with a magnetic layer 10 formed by a magnetic material, the back plate 8 is arranged at the rear side of the flexible display panel 1, the electromagnet mechanism is arranged at one side of the back plate 8 facing the flexible display panel 1, and a certain gap is formed between the magnetic layer 10 and the electromagnet mechanism and is a deformation reserved area of the flexible display panel 1; the electromagnet mechanism comprises a plurality of electromagnets 6 arranged in a matrix shape, and the magnetism of each electromagnet 6 is adjusted by adjusting the voltage value of each electromagnet 6, so that the electromagnets 6 and the magnetic layer 10 attract or repel each other to change the curvature of the flexible display panel 1.

In an alternative embodiment, the guide structure 3 comprises guide posts, and guide slots are provided in the back plate 8, into which the guide posts are inserted and along which the guide posts can move. The axial direction of the guide column is perpendicular to the plate surface of the back plate 8, that is, the flexible frame 2 can move towards or away from the back plate 8 under the guiding action of the guide structure 3.

Specifically, the rigidity of the longitudinal side of the flexible bezel 2 is greater than the rigidity of the transverse side of the flexible bezel 2, thereby better supporting the longitudinal direction of the flexible display panel 1.

The flexible frame 2 may include an inner frame made of a flexible material and a support plate made of a rigid material, the support plate is fixedly connected to a longitudinal side of the inner frame, the two longitudinal sides of the inner frame are respectively connected with the support plate, preferably, the support plate is connected to outer side surfaces of the two longitudinal sides of the inner frame, the inner frame is connected with the flexible display panel 1, and the outer frame is connected with the back plate 8 through the guide structure 3. So configured, the flexible bezel 2 may provide a greater supporting force for the flexible display panel 1.

Specifically, the magnetic layer 10 is attached to the back surface of the flexible display panel 1, and the area of the surface of the flexible display panel 1 is the same as or similar to the area of the side surface of the flexible display panel 1 to which the magnetic layer 10 is attached. So that the magnetic layer 10 can cover the entire rear side, or almost the entire rear side, of the flexible display panel 1. Preferably, the magnetic layer 10 can cover more than 95% of the back side of the flexible display panel 1. The magnetic layer 10 is attached to the back of the flexible display panel 1, and the deformation of the magnetic layer 10 can drive the flexible display panel 1 to deform.

The magnetic layer 10 is made of a magnetic material, for example, the magnetic layer 10 may be made of a permanent magnet, and the magnetic layer 10 may be formed of a powder or granular permanent magnet coated on the flexible display panel 1. By the arrangement, the deformation performance of the magnetic layer 10 is better, and the attaching degree of the flexible display panel 1 is higher. Of course, the magnetic layer 10 may also be in the form of a sheet.

The electromagnets 6 are arranged on the back plate 8 and opposite to the magnetic layer 10, the electromagnets 6 are distributed on the back plate 8 in a matrix shape, and the area of the back plate 8 is larger than or equal to that of the flexible display panel 1. The electromagnets 6 correspond to different areas of the flexible display panel 1, respectively. The electromagnet 6 is connected with an electric wire which is fixed on the back plate 8. The electric wire is used for electrifying the electromagnet 6 so that the electromagnet 6 has magnetic force, the magnetic force of the electromagnet 6 can be changed by adjusting the magnitude of the voltage value input to the electromagnet 6, when the magnetic force of the electromagnet 6 is large, the attractive force to the magnetic layer 10 is strong, and the deformation degree of the magnetic layer 10 is large; when the magnetic property of the electromagnet 6 is small, the attractive force thereof to the magnetic layer 10 is weak, and the degree of deformation of the magnetic layer 10 is small. By changing the voltage values of the different electromagnets 6 corresponding to different regions of the flexible display panel 1, the different regions of the flexible display panel 1 can be deformed to different degrees, so that the curvature of the flexible display panel 1 is changed.

In order to facilitate the control of the energization of the electromagnets 6, in this embodiment, the curvature-adjustable display device further includes a controller, and the controller is connected to each electromagnet 6 for controlling the energization of each electromagnet 6 and the voltage value of the current applied to each electromagnet 6 after the energization.

In the electromagnetic mechanism, each electromagnet 6 can be controlled independently, or the electromagnet 6 can be divided into a plurality of areas, each area comprises a plurality of electromagnets 6, and the control is performed by dividing the area in the control process.

The controller is connected with the input terminal through signals, when the display device is applied to a television, the input terminal can be a television remote controller, and when the display device is applied to a computer, the input terminal can be a mouse or a keyboard. The input terminal may input a control command to adjust the curvature of the flexible display panel 1 through the controller.

In a preferred embodiment, the curvature-adjustable display device further comprises a face recognition sensor 12, the face recognition sensor 12 is mounted on the front side surface of the flexible frame 2, and the controller is respectively in control connection with the electromagnet mechanism and the face recognition sensor 12. The face recognition sensor 12 can recognize the face orientation of the viewer 11, so that the controller can automatically change the curvature of the flexible display panel 1 according to the face orientation of the viewer 11.

As shown in fig. 8 and 9, when the viewers 11 stand at different angles and have different face orientations, the face recognition sensor 12 recognizes the face orientation of the viewers 11, and the controller may adjust the curvature of the flexible display panel 1 according to the face orientation of the viewers 11 so as to present a better viewing angle to the recognized viewers 11.

Further, when the face recognition sensor 12 recognizes that there are a plurality of viewers 11, the controller does not further adjust the curvature of the flexible display panel 1. The user may adjust the curvature of the flexible display panel 1 using a remote controller.

In a preferred embodiment, the curvature-adjustable display device further comprises a supporting plate 4, the supporting plate 4 is disposed below the flexible display panel 1, the supporting plate 4 is connected with the back plate 8, and the bottom surface of the flexible frame 2 is provided with rolling members capable of rolling relative to the supporting plate 4. The supporting plate 4 can play a better supporting role for the flexible frame 2 so as to facilitate the movement of the flexible frame 2 relative to the back plate 8. The rolling part enables sliding friction between the flexible frame 2 and the supporting plate 4 to be converted into rolling friction, so that friction force is reduced, and moving smoothness is improved.

The rolling member can be selected from a rolling ball 5, a roller and the like which can roll.

Preferably, the bottom surface of flexible frame 2 is provided with the mounting groove, and the rolling member is ball 5, and the region more than half of ball 5 is located the mounting groove, and the mounting groove matches with the shape of ball 5. Using the balls 5 as rolling members can be smaller in size and occupy less space than using rollers.

In one embodiment, an inwardly recessed mounting groove may be directly formed on the bottom surface of the flexible bezel 2, and the ball 5 may be disposed in the mounting groove.

Alternatively, as shown in fig. 4 and 5, it is preferable that the bottom surface of the flexible bezel 2 is provided with a boss 9, and the mounting groove is provided in the boss 9.

In an alternative embodiment, the number of the balls 5 is multiple, and the multiple balls 5 are arranged at intervals along the length direction on the bottom surface of the flexible frame 2.

Or, in another alternative embodiment, the number of the balls 5 is multiple, and the multiple balls 5 are arranged at intervals in a matrix shape on the bottom surface of the flexible frame 2.

The number and arrangement of the balls 5 are related to the size of the bottom area of the flexible frame 2, and the diameter of the balls 5. When the balls 5 are the same size, the larger the bottom area of the flexible rim 2 is, the more balls 5 can be arranged. When the bottom area of the flexible rim 2 is the same, the smaller the balls 5, the more balls 5 may be provided.

The number of the balls 5 is increased, so that the supporting points of the flexible frame 2 on the supporting plate 4 are increased, and the support of the flexible frame 2 is more stable.

Preferably, as shown in fig. 3, an elastic film 13 is connected between the bottom front edge of the flexible rim 2 and the top edge of the pallet 4. So set up, at flexible frame 2 for backplate 8 removal in-process, elastic film 13 is stretched or compress, and elastic film 13 covers all the time and locates layer board 4 and expose in the region of flexible frame 2 front side, avoids layer board 4 to fall grey. The elastic film 13 plays a role in preventing water and dust between the supporting plate 4 and the flexible frame 2.

Preferably, as shown in fig. 6 and 7, the back plate 8 is provided with a plurality of grooves, the plurality of electromagnets 6 are arranged in one-to-one correspondence with the plurality of grooves, and each electromagnet 6 is embedded in the corresponding groove. The groove has a limiting effect on the electromagnet 6.

Further, the curvature-adjustable display device further comprises a housing, the housing is provided with a through hole, the housing covers the flexible frame 2, the back plate 8, the flexible display panel 1 and the supporting plate 4, the through hole is opposite to the display area of the flexible display panel 1, and only the display area of the flexible display panel 1 can be exposed out of the through hole so as to view the content displayed by the flexible display panel 1 through the through hole. When a housing is provided, the facial recognition sensor 12 may be provided on the top or front side of the housing.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A curvature-adjustable display device, comprising: the flexible display panel comprises a flexible display panel and a back plate, wherein a flexible frame is arranged at the edge of the flexible display panel, the flexible frame and the back plate are assembled in a sliding mode through a guide structure, a magnetic layer made of a magnetic material is arranged on the back side surface of the flexible display panel, the back plate is arranged on the back side of the flexible display panel, an electromagnet mechanism is arranged on one side, facing the flexible display panel, of the back plate, a certain gap is formed between the magnetic layer and the electromagnet mechanism, and the gap is a deformation reserved area of the flexible display panel; the electromagnet mechanism comprises a plurality of electromagnets which are arranged in a matrix shape, and the magnetism of each electromagnet is adjusted by adjusting the voltage value of each electromagnet, so that the magnetic layer opposite to the electromagnet drives the flexible display panel to deform.

2. The curvature-adjustable display device according to claim 1, further comprising a supporting plate, wherein the supporting plate is disposed below the flexible display panel and connected to the back frame, and a bottom surface of the flexible bezel is provided with a rolling member, and the rolling member can roll relative to the supporting plate.

3. The curvature-adjustable display device according to claim 2, wherein a bottom surface of the flexible bezel is provided with a mounting groove, the rolling member is a ball, more than one half of the area of the ball is located in the mounting groove, and the mounting groove matches with the shape of the ball.

4. The curvature-adjustable display device according to claim 3, wherein a boss is provided on a bottom surface of the flexible bezel, and the mounting groove is provided on the boss.

5. The curvature-adjustable display device according to claim 3, wherein the number of the rolling balls is plural, and the plural rolling balls are arranged at intervals in a length direction on a bottom surface of the flexible bezel.

6. The curvature-adjustable display device according to claim 3, wherein the number of the rolling balls is plural, and the plural rolling balls are arranged at intervals in a matrix shape on the bottom surface of the flexible bezel.

7. The curvature-adjustable display device of claim 2, wherein an elastic film is connected between the bottom front edge of the flexible bezel and the top edge of the support plate.

8. The curvature-adjustable display device according to claim 1, further comprising a controller and a face recognition sensor, wherein the face recognition sensor is mounted on the front side surface of the flexible bezel or the top of the back plate, and the controller is in control connection with the electromagnet mechanism and the face recognition sensor respectively.

9. The curvature-adjustable display device according to claim 1, wherein the back plate is provided with a plurality of grooves, the plurality of electromagnets are arranged in one-to-one correspondence with the plurality of grooves, and each electromagnet is embedded in the corresponding groove.