CN111445803B - display device - Google Patents

Abstract

The application discloses a display device, which comprises a main body and a flexible display panel arranged on the main body, wherein the main body comprises a first unit and a second unit which are movably connected, and the flexible display panel at least covers the movably connected area; at least, the flexible display panel is movably connected with the main body, an installation space is arranged between the flexible display panel and the main body, a deformation inhibiting device is arranged in the installation space, and the deformation inhibiting device is used for inhibiting the convex deformation of the flexible display panel. According to the scheme, due to the fact that the deformation inhibiting device is arranged, when the display device is turned over to be in the flat state from the opposite turning state, the deformation inhibiting device exerts a force towards the main body on the flexible display panel to inhibit the protrusion of the flexible display panel, when the display device is turned over in the opposite turning state continuously, the flexible display panel cannot form wrinkles due to the fact that the protrusion exists in the turning process of the flexible display panel, and the problem that the flexible display panel is damaged irreversibly due to the fact that the protrusion exists in the turning process of the flexible display panel is solved.

Description

display device

technical field

The present invention generally relates to the field of display technology, and in particular to a display device.

Background technique

With the development of display technology, flexible display screens are more and more widely used. For example, there are currently foldable mobile phones on the market, and their display screens are flexible display screens. The foldable mobile phone can be bent by 360°, that is, it has at least an abutment state (a state in which the flexible display screen forms two parts close to each other after folding), a flat state (a state in which the flexible display screen is in a flat state) and In the flipped state (the state where the flexible display screen forms two parts away from each other after being folded), after the flipped state to the flat state, the flexible display screen will have a certain amount of bulge in the bent area. Bending toward the combined state may easily cause wrinkles on the protrusions of the flexible display screen, resulting in irreversible damage to the flexible display screen.

Contents of the invention

The present application intends to provide a display device to solve the problem in the prior art that bending from a flat state to a combined state easily causes wrinkles on the protrusions of the flexible display screen, resulting in irreversible damage to the flexible display screen.

The present invention provides a display device, which includes a main body and a flexible display panel disposed on the main body, the main body includes a first unit and a second unit that are flexibly connected, and the flexible display panel at least covers the area of the flexibly connected ; At least less than the area of the flexible connection, there is an installation space between the flexible display panel and the main body, and a deformation suppression device is arranged in the installation space, and the deformation suppression device is used to suppress the deformation of the flexible display panel. convex deformation.

As an achievable manner, the deformation suppression device includes an electromagnetic generating unit and a soft magnetic material unit, one of the electromagnetic generating unit and the soft magnetic material unit is fixedly connected to the flexible display panel, and the other is connected to the flexible display panel. The main body is fixedly connected.

As an achievable manner, the first unit and the second unit are hinged, and the soft magnetic material unit includes a plurality of soft magnetic material strips arranged side by side at intervals, and the extending direction of each soft magnetic material strip is parallel to An axis of articulation of the first unit and the second unit.

As an implementable manner, each strip of soft magnetic material is fixedly connected to a side of the flexible display panel facing the main body.

As a practicable manner, the soft magnetic material unit includes a soft magnetic material region formed on a side of the flexible display panel facing the main body.

As a practicable manner, the electromagnetic generating unit includes an excitation coil.

As an implementable manner, a degaussing layer is provided between the deformation restraining device and the flexible display panel.

As an achievable way, it also includes a protrusion amount detection device and a magnetic force control device, the protrusion amount detection device is used to detect the protrusion amount of the flexible display panel in the movable connection area; the magnetic force control device uses The strength of the magnetic field formed by the electromagnetic generating unit is controlled according to the protrusion amount.

As a practicable way, the protrusion amount detection device includes an angle sensor and a calculation unit, the angle sensor is arranged at the movable connection, and the angle sensor is used to detect the relative position of the first unit to the second unit. The current rotation angle of the unit, the calculation unit is used to determine the protrusion amount corresponding to the current rotation angle according to the corresponding relationship between the rotation angle and the protrusion amount; or,

The protrusion detection device includes a distance sensor disposed in the installation space, and the measuring end of the distance sensor faces the main body or faces the flexible display panel.

As a practicable manner, the deformation restraining device includes an airbag and a first connecting piece and a second connecting piece that are detachably connected, one of the first connecting piece and the second connecting piece is connected to the flexible display The panel is fixedly connected, and the other is fixedly connected to the main body, and the airbag is used to separate the first connecting part from the second connecting part in an inflated state; or,

The deformation restraining device includes a viscous variable adhesive layer, and at least one of the main body and the flexible display panel is provided with the viscous variable adhesive layer.

In the above solution, due to the arrangement of the deformation restraining device, when the display device is turned from the reversed state to the flat state, the deformation restraining device exerts a force towards the main body on the flexible display panel to suppress the protrusion of the flexible display panel, because the protrusion is restrained , when you continue to turn over the combined state, no wrinkles will be formed due to the protrusions on the flexible display panel, which overcomes the problem of irreversible damage to the flexible display panel due to the protrusions during the folding process.

Description of drawings

Other characteristics, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a schematic structural view of a display device provided by an embodiment of the present invention when the flipped state is transformed into a flat state without suppressing protrusions;

Fig. 2 is a schematic structural diagram of Fig. 1 after suppressing protrusions;

Fig. 3 is a schematic diagram of Fig. 2 being folded from a flattened state to a combined state;

FIG. 4 is a schematic diagram of a display device provided by another embodiment of the present invention;

FIG. 5 is a schematic diagram of a display device provided by yet another embodiment of the present invention.

Detailed ways

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in Figures 1-3, a display device shown in an embodiment of the present invention includes a main body and a flexible display panel 7 disposed on the main body, the main body includes a first unit 1 and a second unit 2 that are movably connected, The flexible display panel 7 covers at least the area Z of the flexible connection; at least less than the area Z of the flexible connection, there is an installation space 6 between the flexible display panel 7 and the main body, and a deformation suppression device is arranged in the installation space 6, and the deformation suppression device is used to suppress the flexibility. The protrusions 5 of the display panel 7 are deformed.

The said display devices are, for example but not limited to, mobile phones, tablet computers, e-books, monitors and the like.

The main body can be the main part of the display device after the flexible display panel 7 is removed, and it can include but not limited to a casing, a circuit board inside the casing, a battery, an antenna and other components. For example, the main body includes a first unit 1 and a second unit 2 , and each of the first unit 1 and the second unit 2 includes a casing, and at least one of a circuit board, a battery and an antenna is arranged in each casing.

The first unit 1 and the second unit 2 can be flexibly connected by direct hinge. Of course, the first unit 1 and the second unit 2 can also be movably connected through multi-section hinges. Generally, in order to make the first unit 1 and the second unit 2 present a relatively flat structure after being folded together, or form a structure similar to a rectangle, multi-section hinges may be preferably used for flexible connection. A multi-section hinge is composed of multiple hinge subsections hinged in sequence. In this example, three hinge subsections a, b, and c are shared. Of course, other number of sections can also be set according to specific conditions. The hinge of the hinge sub-section can be equipped with damping parts, such as a rubber sleeve on the hinge shaft, so that there is a certain damping between the hinge shaft and the hinge hole of the hinge sub-section. 2 Provide a certain resistance when turning over, the resistance can make the first unit 1 rest in any position relative to the second unit 2, and prevent the first unit 1 from swinging freely relative to the second unit 2.

The area Z of the flexible connection is the risk position where the flexible display panel 7 has a protrusion 5 . The protrusion 5 mentioned here means that the flexible display panel 7 is arched toward the side away from the main body. In order to eliminate the protrusion 5, an installation space 6 is provided between the flexible display panel 7 and the main body in the area Z of the flexible connection, and a deformation restraint device is arranged in the installation space 6, and the deformation restraint device is used to restrain the deformation of the flexible display panel 7. The protrusion 5 is deformed.

In the above scheme, due to the arrangement of the deformation restraining device, when the display device is turned from the reversed state to the flat state, the deformation restraining device exerts a force towards the main body on the flexible display panel 7 to restrain the protrusion 5 of the flexible display panel 7. If the lifting 5 is suppressed, when the folding state continues to be folded, no wrinkles will be formed due to the existence of the protrusions 5 in the flexible display panel 7, which overcomes the abnormality caused by the existence of the protrusions 5 in the folding process of the flexible display panel 7. The problem of reversible damage.

As a practical way, the deformation suppression device includes an electromagnetic generating unit 3 and a soft magnetic material unit, one of which is fixedly connected to the flexible display panel 7 , and the other is fixedly connected to the main body.

The soft magnetic material unit refers to the preparation of soft magnetic material. The purpose of using soft magnetic material is that when the electromagnetic generating unit 3 is powered off, the soft magnetic material unit will also be degaussed, and will not affect the display because it has always been magnetic. bring adverse effects.

For example, the electromagnetic generating unit 3 is fixedly connected to the main body, and the soft magnetic material unit is fixed to the flexible display panel 7, and vice versa. When the display device changes from the flipped state to the flat state, the electromagnetic generating unit 3 can be controlled to energize to generate a magnetic field of a certain strength to adsorb the soft magnetic material unit, as shown by the arrow in Figure 1, forming a downward suction force, The magnitude of the magnetic force generated by the electromagnetic generating unit 3 can be controlled according to the flip angle of the first unit 1 relative to the second unit 2, for example, as the flip angle of the first unit 1 relative to the second unit 2 increases, the magnetic force increases relatively, To suppress the protrusion 5 of the flexible display panel 7 . Of course, it is also possible to control the electromagnetic generating unit 3 to energize to generate a magnetic field of a certain strength after changing from the reversed state to the flat state, so that the part of the flexible display panel 7 protruding 5 can be attracted to one side of the main body, so as to suppress the flexible display. The protrusion 5 of the panel 7, that is, the elimination of the protrusion 5, makes the flexible display panel 7 in a flat state. Then, when it is folded to the combined state, as shown by the arrow in FIG. 3 , no wrinkles will be formed due to the protrusions 5 of the flexible display panel 7 .

As an achievable way, the first unit 1 and the second unit 2 are hinged, and the soft magnetic material unit includes a plurality of soft magnetic material strips 4 arranged side by side at intervals, and the extending direction of each soft magnetic material strip 4 is parallel to the first unit 1 and the hinge axis of the second unit 2 . The soft magnetic material strips 4 are arranged at intervals, and the extension direction is parallel to the hinge axis, so that when the first unit 1 is bent relative to the second unit 2, no mutual pulling force will be generated between the soft magnetic material strips 4, which is beneficial to the bending process. Runs smoothly.

As an achievable way, in order to facilitate installation and to connect with the circuit of the electromagnetic generating unit 3, each soft magnetic material strip 4 is fixedly connected to the side of the flexible display panel 7 facing the main body. The magnetic material strip 4 is fixed on the side of the flexible display panel 7 facing the main body. Correspondingly, the electromagnetic generating unit 3 is fixedly connected to the main body, and the main body is provided with components such as corresponding circuits and batteries, so as to facilitate the connection with the electromagnetic generating unit 3. Make electrical connections.

As an achievable way, after the packaging of the flexible display panel 7 is completed, a layer of stainless steel film is generally formed on the back side of the flexible display panel 7, that is, the side facing the main body. The stainless steel film is doped with a certain amount of The soft magnetic material makes the stainless steel film corresponding to the movable connection area Z form a soft magnetic material film, that is, the soft magnetic material unit includes a soft magnetic material film formed on the side of the flexible display panel 7 facing the main body. The thin film of soft magnetic material can replace the above-mentioned strip 4 of soft magnetic material, or be used together with the strip 4 of soft magnetic material.

As a realizable manner, the electromagnetic generating unit 3 includes an excitation coil. In order to reduce the volume, the excitation coil is, for example but not limited to, a single-layer coil, and an iron core may or may not be provided in its middle.

As an achievable way, in order to prevent the magnetic field generated by the deformation suppression device from adversely affecting the display, a demagnetization layer is provided between the deformation suppression device and the flexible display panel 7 . The degaussing layer is, for example but not limited to, a tin foil layer.

As an achievable way, in order to better suppress the protrusion 5 and reduce power consumption, it also includes a protrusion amount detection device and a magnetic force control device, and the protrusion amount detection device is used to detect the flexible display panel 7 in the area of the flexible connection The amount of protrusion of Z; the magnetic force control device is used to control the strength of the magnetic field formed by the electromagnetic generating unit 3 according to the amount of protrusion. If the amount of protrusion is small, a small magnetic field will be generated, and if the amount of protrusion is large, a correspondingly larger magnetic field will be generated.

As an achievable way, the protrusion amount detection device includes an angle sensor and a calculation unit, the angle sensor is arranged at the joint, the angle sensor is used to detect the current rotation angle of the first unit 1 relative to the second unit 2, and the calculation unit is used for According to the corresponding relationship between the rotation angle and the protrusion amount, the protrusion amount corresponding to the current rotation angle is determined. Generally, the larger the angle of rotation of the first unit 1 relative to the second unit 2, the greater the amount of protrusion, and there is a corresponding relationship between them. The current rotation angle of the second unit 2 determines the protrusion amount corresponding to the current rotation angle, and controls the electromagnetic generating unit 3 to form a magnetic field of corresponding strength to suppress the protrusion 5 according to the protrusion amount.

In addition to measuring by angle, the protrusion amount detection device can also adopt the following forms, including a distance sensor disposed in the installation space 6 , and the measuring end of the distance sensor faces the main body or the flexible display panel 7 . For example, the distance sensor can be, but not limited to, a laser distance measuring sensor, which can be arranged on the main body. At this time, its measuring end is facing the flexible display panel 7, by emitting laser light to the flexible display panel 7, and receiving the laser light reflected by the flexible display panel 7. to determine the amount of bulge. Similarly, the laser ranging sensor can also be set on the flexible display panel 7, at this time, its measuring end is facing the main body, and the protrusion amount is determined by emitting laser light to the flexible main body and receiving the reflected laser light from the main body.

As an achievable way, as shown in FIG. 4 , the deformation restraining device includes an airbag 10 and a first connecting part 8 and a second connecting part 9 which are detachably connected, one of the first connecting part 8 and the second connecting part 9 One is fixedly connected to the flexible display panel 7 and the other is fixedly connected to the main body. The airbag 10 is used to separate the first connecting part 8 and the second connecting part 9 in an inflated state. In this solution, the first connecting member 8 and the second connecting member 9 may be, but not limited to, buckles, Velcro and the like. After changing from the reversed state to the flat state, the position of the protrusion 5 of the flexible display panel 7 can be artificially pressed, so that the first connecting member 8 and the second connecting member 9 are connected together, so as to suppress the protrusion of the flexible display panel 7 5. Then it can be bent to the combined state. And before bending from the flat state to the reversed state, at first the airbag 10 is inflated, and the first connecting part 8 and the second connecting part 9 are separated by the airbag 10, so as to prevent that the first connecting part 8 and the second connecting part 9 are separated when bending. The two connecting parts 9 are in the connected state and the flexible display panel 7 is strained.

In addition, as shown in FIG. 5 , the deformation restraining device includes a viscous variable adhesive layer 11 , and at least one of the main body and the flexible display panel 7 is provided with the viscous variable adhesive layer 11 . For example, a variable-viscosity adhesive layer is provided on the flexible display panel 7 , and the variable-viscosity adhesive layer 11 can be pressure- or temperature-sensitive adhesive, that is, the viscosity of the adhesive changes when the pressure or temperature changes. When pressure-sensitive glue is used, after the turned state is turned into a flat state, the position of the protrusion 5 of the flexible display panel 7 can be artificially pressed to make the viscous variable glue layer 11 contact the main body, and under the action of the pressing pressure Next, the viscosity of the variable-viscosity adhesive layer 11 increases and is bonded to the main body, so as to suppress the deformation of the protrusion 5 of the flexible display panel 7 .

It should be understood that if the above refers to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical ", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover the technical solution formed by the above-mentioned technical features or other technical features without departing from the inventive concept. Other technical solutions formed by any combination of equivalent features. For example, a technical solution formed by replacing the above-mentioned features with technical features with similar functions disclosed in (but not limited to) this application.

Claims (1)

1. A display device comprises a main body and a flexible display panel arranged on the main body, wherein the main body comprises a first unit and a second unit which are movably connected, and the flexible display panel at least covers the movably connected area; the flexible display panel is characterized in that at least in the movably connected area, an installation space is arranged between the flexible display panel and the main body, a deformation inhibiting device is arranged in the installation space, and the deformation inhibiting device is used for inhibiting the convex deformation of the flexible display panel;

the bending range of the display device is 0-360 degrees, and the display device at least comprises a folding state, a flat state and a turning state, wherein the folding state is a state that the flexible display panel forms two parts close to each other after being folded, the flat state is a state that the flexible display panel is in a flat state, and the turning state is a state that the flexible display panel forms parts deviating from each other after being folded;

the deformation inhibiting device comprises an air bag and a first connecting piece and a second connecting piece which are connected in a separable mode, one of the first connecting piece and the second connecting piece is fixedly connected with the flexible display panel, the other one of the first connecting piece and the second connecting piece is fixedly connected with the main body, and the air bag is used for separating the first connecting piece and the second connecting piece in an inflated state;

the deformation inhibiting device is used for connecting the first connecting piece and the second connecting piece together by manually pressing the convex position of the flexible display panel after the flexible display panel is converted from the opposite-turning state to the flat state so as to inhibit the protrusion of the flexible display panel, and then bending the flexible display panel towards the involution state; and the first connecting piece and the second connecting piece are separated through the air bag.

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