CN108626241B

CN108626241B - Hydraulic rotating shaft mechanism for flexible display screen

Info

Publication number: CN108626241B
Application number: CN201810478880.1A
Authority: CN
Inventors: 栾北瓯
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-18
Filing date: 2018-05-18
Publication date: 2020-03-31
Anticipated expiration: 2038-05-18
Also published as: CN108626241A

Abstract

The invention discloses a hydraulic rotating shaft mechanism for a flexible display screen, which comprises: the flexible display screen comprises a display surface and a back surface opposite to the display surface; a protection plate, a back surface of the flexible display screen being bonded to one side of the protection plate; the hydraulic rotating shaft mechanism is used for folding the flexible display screen and comprises a plurality of parallel double-bubble structures, each double-bubble structure is composed of an elastic inner bubble filled with liquid, an elastic outer bubble and a non-elastic communicating pipe communicated with the inner bubble and the outer bubble, the inner bubble is fixedly connected to the other side, opposite to the flexible display screen, of the protection plate, and the double-bubble structures composed of the inner bubble, the communicating pipe and the outer bubble extend in the direction perpendicular to the flexible display screen and the protection plate.

Description

Hydraulic rotating shaft mechanism for flexible display screen

Technical Field

The invention belongs to the field of display, and particularly relates to a hydraulic rotating shaft mechanism for a flexible display screen.

Background

In recent years, the attention of each large communication huge head to the flexible display screen is higher and higher, and if the mobile phone with the full screen can be achieved in the future, the flexible display screen is a problem which cannot be ignored. The whole flexible foldable screen can be folded by matching with the hinge, and when the flexible display screen is unfolded, the flexible display screen has a larger display area and can be used as a flat plate or a PC display screen; when folded, the mobile phone is equivalent to a smart phone display screen.

With the development and progress of screen technology, the biggest problem of the flexible display screen in use is no longer the problem of display or touch feedback, but the strength of the screen is not enough, the folding characteristic is realized through the hinge at the back and the flexibility of the screen, the original shape of the screen can be influenced under huge deformation, the rotating shaft mechanism for the flexible display screen can be designed to play a role in protecting the screen, and meanwhile, certain electronic elements can be integrated inside the rotating shaft mechanism, so that the design of the rotating shaft mechanism for the flexible display screen is very important.

Disclosure of Invention

The invention provides an innovative hydraulic rotating shaft mechanism for a flexible display screen, which can realize the conventional performance of the conventional rotating shaft mechanism.

A hydraulic hinge mechanism for a flexible display screen, comprising:

the flexible display screen comprises a display surface and a back surface opposite to the display surface;

a protection plate, a back surface of the flexible display screen being bonded to one side of the protection plate;

the hydraulic rotating shaft mechanism is used for folding the flexible display screen and comprises a plurality of parallel double-bubble structures, each double-bubble structure is composed of an elastic inner bubble filled with liquid, an elastic outer bubble and a non-elastic communicating pipe communicated with the inner bubble and the outer bubble, the inner bubble is fixedly connected to the other side, opposite to the flexible display screen, of the protection plate, and the double-bubble structures composed of the inner bubble, the communicating pipe and the outer bubble extend in the direction perpendicular to the flexible display screen and the protection plate.

Preferably, the protection plate is a strong elastic thin plate. More preferably, the protection plate is made of 65Mn spring steel and has a thickness of 0.1 to 0.5 mm.

In one embodiment, the plurality of juxtaposed double bubble structures are disposed at both end portions in a width direction of the flexible display screen. In another embodiment, the plurality of side-by-side dual-bubble structures are arranged around the flexible display screen. In a further embodiment, the plurality of juxtaposed double bubble structures are arranged in the middle of the flexible display screen.

Preferably, the liquid filled in the double vacuole structure is a viscous liquid.

Preferably, in an undeformed state, the inner vacuole and the outer vacuole are spherical vacuoles having the same diameter, and the diameter of the communicating tube is between 0.1 and 0.7 times the diameter of the inner vacuole and the outer vacuole.

Drawings

Some example embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings; this invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, the drawings illustrate some example embodiments of the invention, together with the description, and serve to explain the principles and aspects of the invention.

In the drawings, the size may be exaggerated for clarity of illustration. Like numbers refer to like elements throughout.

FIGS. 1a-c schematically illustrate the layout of a hydraulic hinge mechanism for a flexible display panel according to the present invention, wherein a portion of the structure is omitted to better illustrate the arrangement of the double vacuoles;

FIG. 2 is a partial cross-sectional view of a hydraulic spindle mechanism for a flexible display in accordance with the present invention, wherein the flexible display is in a fully extended state;

FIG. 3 is a partial cross-sectional view of a hydraulic spindle mechanism for a flexible display screen according to the present invention, wherein the flexible display screen is in a fully flexed state;

figure 4 is a schematic view of a double vacuole deformed hydraulic hinge mechanism for a flexible display according to the present invention,

wherein: 100: a flexible display screen; 200: a protection plate; 300: a hydraulic spindle mechanism; 301: inner vacuole; 302: a communicating pipe; 303: outer vacuole; 400: a housing; 500: a flexible battery; 600: a flexible circuit board.

Detailed Description

In the following detailed description, certain exemplary embodiments of the present invention are shown and described, simply by way of illustration. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

Exemplary embodiments according to the present invention will be described in further detail below with reference to the accompanying drawings.

FIGS. 1a-c schematically illustrate the layout of a hydraulic hinge mechanism for a flexible display panel according to the present invention, wherein a portion of the structure is omitted to better illustrate the arrangement of the dual bubble structure; FIG. 2 is a partial cross-sectional view of a hydraulic spindle mechanism for a flexible display in accordance with the present invention, wherein the flexible display is in a fully extended state; FIG. 3 is a partial cross-sectional view of a hydraulic spindle mechanism for a flexible display screen according to the present invention, wherein the flexible display screen is in a fully flexed state; fig. 4 is a schematic diagram of a deformed double vacuole of a hydraulic rotary shaft mechanism for a flexible display screen according to the present invention.

Referring to fig. 1a-c and fig. 2, a hydraulic hinge mechanism for a flexible display according to the present invention includes: the flexible display screen comprises a flexible display screen 100, a protection plate 200 and a hydraulic rotating shaft mechanism 300 for folding the flexible display screen 100. Further, the hydraulic spindle mechanism 300 may be enclosed in a housing 400.

As shown in the sectional view shown in fig. 2, the flexible display panel 100 includes a display surface and a rear surface opposite to the display surface, and the rear surface of the flexible display panel 100 is bonded to one side of the protective plate 200. Preferably, the protection plate 200 is a strong elastic thin plate having a thickness of 0.1 to 0.5 mm. Specifically, the protection plate 200 may be made of 65Mn spring steel. The protection plate 200 may be made of a metal or nonmetal elastic material such as elastic titanium or pp plastic plate.

The hydraulic rotating shaft mechanism 300 comprises a plurality of parallel double-bubble structures, each double-bubble structure is composed of an elastic inner bubble 301 filled with liquid, an elastic outer bubble 303 and a non-elastic communicating pipe 302 communicated with the inner bubble 301 and the outer bubble 303 in a liquid mode, the inner bubble 301 is fixedly connected to the other side, opposite to the flexible display screen 100, of the protection plate 200, and the double-bubble structure composed of the inner bubble 301, the communicating pipe 302 and the outer bubble 303 extends in a direction perpendicular to the flexible display screen 100 and the protection plate 200. Preferably, the liquid filled in the double-bubble structure is a viscous liquid. Preferably, in an undeformed state, the inner and

outer vacuoles

301 and 303 are spherical vacuoles having the same diameter, and the diameter of the communication tube 302 is between 0.1 and 0.7 times the diameter of the inner and

outer vacuoles

301 and 303.

In an embodiment, as shown in fig. 1a, a plurality of side-by-side dual bubble structures are disposed at both ends in the width direction of the flexible display screen 100, and other electronic components such as the flexible battery 500 and the flexible circuit board 600 are disposed in the middle of the dual bubble structures. At this time, the electronic device including the flexible display screen can be bent along an axis parallel to the width direction of the flexible display screen.

In another embodiment, as shown in fig. 1b, a plurality of side-by-side dual bubble structures are arranged around the flexible display screen 100, and other electronic components such as the flexible battery 500 and the flexible circuit board 600 are arranged in the middle of the dual bubble structures. At this time, the electronic device including the flexible display screen can be bent along an axis parallel to the width direction of the flexible display screen, and can also be bent along an axis parallel to the length direction of the flexible display screen.

In yet another embodiment, as shown in fig. 1c, a plurality of side-by-side dual bubble structures are arranged in the middle of the flexible display screen 100, and other electronic components such as the flexible battery 500 and the flexible circuit board 600 are arranged at both sides of the dual bubble structures. At this time, the electronic device including the flexible display screen can be bent along an axis parallel to the width direction of the flexible display screen, and can also be bent along an axis parallel to the length direction of the flexible display screen.

In the figures shown in fig. 1a-c, a plurality of side-by-side double vacuole structures are shown having multiple rows and columns, the locations and numbers of side-by-side double vacuole structures shown in the figures are illustrative and embodiments of the invention are not limited thereto. Preferably, the double bubble structure may be arranged in a matrix of a plurality of rows (and/or a single row) and/or a plurality of columns (and/or a single column) depending on the size of the electronic device and the size and position of the internal electronic components. Other arrangements than on the sides, around and in the middle are conceivable without affecting the arrangement of the electronic components. The hydraulic rotating shaft mechanism for the flexible display screen can achieve the effect that any region of the whole screen can be bent, realizes uniform stress of materials in the bending process through the uniformity of liquid pressure, and cannot generate the consequences of structural deformation and damage (such as protrusion and fracture wrinkling) caused by overlarge local stress.

As shown in fig. 3 and 4, the flexible electronic screen 100 is folded, the radius of curvature of the folded portion of the flexible electronic screen 100 reaches a maximum value, i.e., R, and the flexible electronic screen is folded into two portions parallel to each other. After the flexible electronic screen 100 is bent, the high elastic protection plate 200 is bent synchronously, the protection plate 200 makes the double-bubble structure fixed on one side of the protection plate 200 bear force on one side, so as to uniformly and synchronously extrude the elastic inner vacuole 301 with a double vacuole structure, after the extrusion, the viscous liquid in the inner vacuole 301 slowly flows to the vacuole 303 at the other side (namely, the elastic outer vacuole) through the thin-diameter communicating pipe 302, at the moment, the elastic inner vacuole 301 is compressed, the elastic outer vacuole 303 is expanded, when the fully flexed state shown in fig. 3 is reached, the fluid stops flowing, the inner and outer vacuoles stop deforming, the flexing action is completed, the expansion of the elastic outer vacuole 303 compensates for the tensile deformation of the flexed outer side, the flexible display 100 is substantially in the neutral layer of the flexing deformation, the flexible display screen 100 is protected better by minimizing the possibility of deformation during bending. In addition, the existence of thick liquid and communicating pipe and the setting of vacuole make certain damping cushion force produce in crooked in-process in two vacuole structures, like this, flexible display screen can stop to continue to buckle along with exerting disappearance of external force at the in-process of buckling to maintain required arbitrary angle of buckling, can also prevent to buckle the too fast emergence and lead to the screen impaired, and further prevent after buckling and accomplish that the screen rebounds and the reconversion.

Certain exemplary embodiments have been disclosed herein, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation. In some instances, one or more features, characteristics and/or elements described in connection with a particular embodiment may be used alone, or in combination with one or more features, characteristics and/or elements described in connection with other embodiments, unless expressly stated to the contrary, as would be apparent to one of ordinary skill in the art. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as set forth in the appended claims and their equivalents.

Claims

1. A hydraulic hinge mechanism for a flexible display screen, comprising:

a flexible display screen (100) comprising a display side and a back side opposite the display side;

a protective plate (200) to one side of which a rear surface of the flexible display (100) is bonded;

the hydraulic rotating shaft mechanism (300) is used for folding the flexible display screen (100), the hydraulic rotating shaft mechanism (300) comprises a plurality of parallel double-bubble structures, each double-bubble structure comprises an inner bubble (301) filled with liquid and having elasticity, an outer bubble (303) having elasticity and liquid communication, the inner bubble (301) and the non-elastic communicating pipe (302) of the outer bubble (303) form, the inner bubble (301) is fixedly connected to the other side, opposite to the flexible display screen (100), of the protection plate (200), the inner bubble (301) and the outer bubble (303) form the double-bubble structures, wherein the double-bubble structures are perpendicular to the flexible display screen (100) and the direction of the protection plate (200) extend.

2. A hydraulic hinge mechanism for a flexible display according to claim 1, wherein the protective plate (200) is a strong elastic sheet.

3. A hydraulic hinge mechanism for a flexible display according to claim 2, wherein the protective plate (200) is made of 65Mn spring steel with a thickness of 0.1-0.5 mm.

4. A hydraulic hinge mechanism for a flexible display screen according to claim 1, wherein the plurality of juxtaposed double bubble structures are arranged at both ends in a width direction of the flexible display screen (100).

5. A hydraulic spindle mechanism for a flexible display screen according to claim 1, wherein the plurality of side-by-side double bubble structures are arranged around the flexible display screen (100).

6. A hydraulic hinge mechanism for a flexible display screen according to claim 1, wherein the plurality of juxtaposed double bubble structures are arranged in the middle of the flexible display screen (100).

7. The hydraulic hinge mechanism for a flexible display according to claim 1, wherein the liquid filled in the double bubble structure is a viscous liquid.

8. The hydraulic rotating shaft mechanism for the flexible display screen according to claim 1, wherein in an undeformed state, the inner vacuole (301) and the outer vacuole (303) are spherical vacuoles with the same diameter, and the pipe diameter of the communicating pipe (302) is between 0.1 and 0.7 times the diameter of the inner vacuole (301) and the outer vacuole (303).