CN113539105B - Foldable display device - Google Patents

Foldable display device Download PDF

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Publication number
CN113539105B
CN113539105B CN202110834744.3A CN202110834744A CN113539105B CN 113539105 B CN113539105 B CN 113539105B CN 202110834744 A CN202110834744 A CN 202110834744A CN 113539105 B CN113539105 B CN 113539105B
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China
Prior art keywords
cavity
display device
foldable display
switch
air outlet
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CN113539105A (en
Inventor
邓杭杭
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The embodiment of the application provides a foldable display device; the foldable display device comprises a dustproof mechanism positioned in a bending area, wherein the dustproof mechanism at least comprises a shell and a first dustproof cavity arranged in the shell, a first piston is arranged in the first dustproof cavity, the first piston divides part of the first dustproof cavity into a first cavity and a second cavity, a first air inlet switch and a first air outlet switch are arranged on the side wall of the first cavity, a second air inlet switch and a second air outlet switch are arranged on the side wall of the second cavity, the first air inlet switch and the second air inlet switch are connected to the inside of the foldable display device, and the first air outlet switch and the second air outlet switch are connected to the outside of the foldable display device; the foldable display device utilizes the bending power to push the piston to change the air pressure in the cavity, so that the air pressure in the cavity is always higher than the outside in the folding and unfolding processes of the foldable display device, thereby preventing dust from entering and discharging the dust in the foldable display device.

Description

Foldable display device
Technical Field
The application relates to the technical field of display, in particular to a foldable display device.
Background
At present, along with the development of flexible screens, electronic devices of foldable display screens have appeared in the prior art, and the bending of the flexible screens is generally realized through hinges in the existing foldable display devices, and the support of the flexible screens is realized through the attachment of the back surfaces of the support plates and the flexible screens.
However, there is a gap between the middle bending region and the middle frame of the foldable display device due to the need to ensure the bending track, so that the foldable display device may have dust and other impurities entering the foldable display device during the use process to damage the internal devices and the screen of the foldable display device, thereby affecting the performance of the foldable display device.
Therefore, a foldable display device is needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a foldable display device to improve the technical problem that the foldable display device in the prior art has dust and other sundries entering the foldable display device in the using process to damage the internal devices and the screen of the foldable display device.
The embodiment of the application provides a foldable display device, which comprises at least two non-bending areas and a bending area, wherein the bending area is used for connecting two adjacent non-bending areas, and a dustproof mechanism is arranged in the bending area;
the dustproof mechanism at least comprises a shell and a first dustproof cavity arranged in the shell, wherein a first piston moving in the first dustproof cavity is arranged in the first dustproof cavity, and the first piston divides part of the first dustproof cavity into a first cavity and a second cavity;
a first air inlet switch and a first air outlet switch are arranged on the side wall of the first cavity, a second air inlet switch and a second air outlet switch are arranged on the side wall of the second cavity, the first air inlet switch and the second air inlet switch are connected to the inside of the foldable display device, and the first air outlet switch and the second air outlet switch are connected to the outside of the foldable display device;
when the first piston moves along a first direction, the first air inlet switch is turned on, the first air outlet switch is turned off, the second air inlet switch is turned off, and the second air outlet switch is turned on; when the first piston moves along the second direction, the first air inlet switch is closed, the first air outlet switch is opened, the second air inlet switch is opened, and the second air outlet switch is closed.
Optionally, in some embodiments of the present application, the first air inlet switch is disposed on an inner wall of the first chamber, and the first air outlet switch is disposed on an outer wall of the first chamber;
the second air inlet switch is arranged on the inner wall of the second cavity, and the second air outlet switch is arranged on the outer wall of the second cavity.
Optionally, in some embodiments of the present application, the first air intake switch is disposed near a bottom frame of the foldable display device, and the second air intake switch is disposed near a back surface of a display screen of the foldable display device.
Optionally, in some embodiments of the present application, the first dustproof cavity further includes an exhaust cavity located on one side of the first cavity and the second cavity, an exhaust port far away from the first air outlet switch and the second air outlet switch is disposed on the exhaust cavity, and the exhaust port is connected to the outside of the foldable display device.
Optionally, in some embodiments of the present application, a filter cover is disposed on a side of the exhaust port away from the exhaust cavity, and the filter cover includes a plurality of vent holes.
Optionally, in some embodiments of the present application, the filter cover is further filled with a dust adsorbing material.
Optionally, in some embodiments of the present application, the first dust-proof cavity further includes a first lead screw and a second lead screw arranged in parallel with the first lead screw, and the first lead screw and the second lead screw respectively penetrate through the first dust-proof cavity along the first direction and are fixed on the inner wall of the bottom frame;
the first direction and the second direction are parallel to the central axis of the bending area, and the first screw rod and the second screw rod respectively penetrate through the first piston and are in threaded connection with the first piston.
Optionally, in some embodiments of the present application, a first gear is fixed to a first end of the first lead screw close to the inner wall of the bottom frame, a second gear is fixed to a first end of the second lead screw close to the inner wall of the bottom frame, and the first gear is engaged with the second gear.
Optionally, in some embodiments of the present application, the first air inlet switch, the first air outlet switch, the second air inlet switch, and the second air outlet switch are all one-way ventilation valves.
Optionally, in some embodiments of the present application, the dustproof mechanism further includes a second dustproof cavity disposed in the housing, and a second piston moving in the second dustproof cavity is disposed in the second dustproof cavity;
the first piston and the second piston are fixedly connected through a chain connecting rod, and the chain connecting rod is arranged in the first direction.
The embodiment of the application provides a foldable display device; the foldable display device comprises at least two non-bending areas and a bending area for connecting two adjacent non-bending areas, wherein a dustproof mechanism is arranged in the bending area, the dustproof mechanism at least comprises a shell and a first dustproof cavity arranged in the shell, a first piston moving in the first dustproof cavity is arranged in the first dustproof cavity, the first piston divides part of the first dustproof cavity into a first cavity and a second cavity, a first air inlet switch and a first air outlet switch are arranged on the side wall of the first cavity, a second air inlet switch and a second air outlet switch are arranged on the side wall of the second cavity, the first air inlet switch and the second air inlet switch are connected with the inside of the foldable display device, and the first air outlet switch and the second air outlet switch are connected with the outside of the foldable display device, when the first piston moves along a first direction, the first air inlet switch is turned on, the first air outlet switch is turned off, the second air inlet switch is turned off, and the second air outlet switch is turned on; when the first piston moves along a second direction, the first air inlet switch is closed, the first air outlet switch is opened, the second air inlet switch is opened, and the second air outlet switch is closed; the foldable display device utilizes the bent power to push the piston to change the air pressure in the cavity, and utilizes the one-way control valve to control the opening and closing of the air vent, so that the air pressure in the cavity is always higher than the outside in the folding and unfolding processes of the foldable display device, thereby preventing dust from entering and discharging the dust in the foldable display device; meanwhile, the air flows to form an air heat exchange process inside and outside the foldable display device, heat inside the foldable display device is transferred to the outside, the heat dissipation effect is achieved, and the performance and the user experience of the foldable display device are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an isometric view of a dust-proof mechanism in a foldable display device provided by an embodiment of the present application;
fig. 2 is a normal view of a dust-proof mechanism in a foldable display device provided in an embodiment of the present application in a radial direction;
fig. 3 is a schematic diagram of a dust-proof mechanism in a foldable display device according to an embodiment of the present application;
fig. 4 is a top view of a dust-proof mechanism in a foldable display device provided in an embodiment of the present application;
fig. 5 is a bottom view of a dust-proof mechanism in the foldable display device according to an embodiment of the present application;
FIG. 6 is a cross-sectional view of the dust-proof mechanism of FIG. 4 taken along the dashed line A-A;
FIG. 7 is a cross-sectional view of the dust-proof mechanism of FIG. 4 taken along the dashed line B-B;
fig. 8 is a three-dimensional schematic view of a dust-proof mechanism in a foldable display device according to an embodiment of the present application;
FIG. 9 is a right side view of the dust control mechanism of FIG. 8;
fig. 10 is a schematic diagram illustrating an operation principle of an air inlet switch and an air outlet switch of a dust-proof mechanism in the foldable display device according to the embodiment of the present application;
fig. 11 is a schematic position diagram of a dustproof mechanism in a flattened state of a foldable display device according to an embodiment of the present application;
fig. 12 is an enlarged schematic view of the dust-proof mechanism at a in fig. 11.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solution of the present application will now be described with reference to specific embodiments.
The embodiment of the application aims at the technical problem that dust and other impurities can enter the foldable display device in the prior art in the using process to damage an internal device and a screen of the foldable display device, and the embodiment of the application can solve the technical problem.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 1 to 12, an embodiment of the present application provides a foldable display device; the foldable display device comprises at least two non-bending areas and a bending area connecting two adjacent non-bending areas, wherein a dustproof mechanism 111 is arranged in the bending area, the dustproof mechanism 111 at least comprises a shell 300 and a first dustproof cavity 30 arranged in the shell 300, a first piston 401 moving in the first dustproof cavity 30 is arranged in the first dustproof cavity 30, part of the first dustproof cavity 30 is divided into a first cavity 301 and a second cavity 302 by the first piston 401, a first air inlet switch 101 and a first air outlet switch 201 are arranged on the side wall of the first cavity 301, a second air inlet switch 501 and a second air outlet switch 202 are arranged on the side wall of the second cavity 302, the first air inlet switch 101 and the second air inlet switch 501 are connected inside the foldable display device, and the first air outlet switch 201 and the second air outlet switch 202 are connected outside the foldable display device, when the first piston 401 moves along a first direction D1, the first air inlet switch 101 is opened, the first air outlet switch 201 is closed, the second air inlet switch 501 is closed, and the second air outlet switch 202 is opened; when the first piston 401 moves along the second direction, the first air inlet switch 101 is closed, the first air outlet switch 201 is opened, the second air inlet switch 501 is opened, and the second air outlet switch 202 is closed.
The air pressure in the cavity is changed by pushing the piston through the bent power, and the opening and closing of the air vent are controlled by the one-way control valve, so that the air pressure in the cavity is always higher than the outside in the folding and unfolding processes of the foldable display device, and dust is prevented from entering and can be discharged from the interior of the foldable display device; meanwhile, the air flows to form an air heat exchange process inside and outside the foldable display device, heat inside the foldable display device is transferred to the outside, the heat dissipation effect is achieved, and the performance and the user experience of the foldable display device are improved.
The technical solution of the present application will now be described with reference to specific embodiments.
As shown in fig. 1, there is provided an isometric view of a dust-proof mechanism 111 in a foldable display device according to an embodiment of the present application; the folding display device provided by this embodiment includes at least two non-bending regions and two adjacent non-bending regions, the bending region is provided with the dustproof mechanism 111, the dustproof mechanism 111 includes the housing 300, the first dustproof cavity 30 arranged in the housing 300 and the second dustproof cavity arranged opposite to the first dustproof cavity 30, and the internal structure of the second dustproof cavity is the same as that of the first dustproof cavity 30.
The first dustproof cavity 30 is internally provided with a first piston 401 which moves in the first dustproof cavity 30, the first piston 401 divides part of the first dustproof cavity 30 into a first cavity 301 and a second cavity 302, the side wall of the first cavity 301 is provided with a first air inlet switch 101 and a first air outlet switch 201, the side wall of the second cavity 302 is provided with a second air inlet switch 501 and a second air outlet switch 202, the first air inlet switch 101 and the second air inlet switch 501 are connected to the inside of the foldable display device, and the first air outlet switch 201 and the second air outlet switch 202 are connected to the outside of the foldable display device.
Further, a second piston 402 moving in the second dustproof cavity is arranged in the second dustproof cavity, the second piston 402 divides part of the second dustproof cavity into a fourth cavity and a fifth cavity, a third air inlet switch 102 and a third air outlet switch 601 are arranged on the side wall of the fourth cavity, a fourth air inlet switch 502 and a fourth air outlet switch 602 are arranged on the side wall of the fifth cavity, the third air inlet switch 102 and the fourth air inlet switch 502 are connected to the inside of the foldable display device, and the third air outlet switch 601 and the fourth air outlet switch 602 are connected to the outside of the foldable display device.
Further, the first dust-proof cavity 30 further includes a first lead screw 701 and a second lead screw 702 arranged in parallel with the first lead screw 701, and the first lead screw 701 and the second lead screw 702 respectively penetrate through the first dust-proof cavity 30 along the first direction D1 and are fixed on the inner wall of the bottom frame; the first lead screw 701 and the second lead screw 702 respectively penetrate through the first piston 401 and are in threaded connection with the first piston 401. Similarly, the second dustproof cavity also includes a third lead screw 703 and a fourth lead screw 704 which are arranged corresponding to the second piston 402, and the third lead screw 703 and the fourth lead screw 704 respectively penetrate through the second piston 402 and are in threaded connection with the second piston 402.
As shown in fig. 2, a normal view of a dust-proof mechanism 111 in a foldable display device provided in an embodiment of the present application in a radial direction of an axis; an exhaust port 801 is formed in the bottom of the first dustproof cavity 30, a filter cover 901 is arranged on one side, away from the first air inlet switch 101, of the exhaust port 801, and the filter cover 901 comprises a plurality of vent holes which are communicated with external air to ensure air flow.
Further, the filter cover 901 is filled with a dust adsorbing material, the dust adsorbing material can adsorb dust, and the dust removing effect of the dust preventing mechanism 111 can be ensured by periodically cleaning the filter cover 901.
In the embodiment of the present application, an orthographic projection of the first air inlet switch 101 on the filter cover 901 coincides with an orthographic projection of the air outlet 801 on the filter cover 901, so that the arrangement is favorable for air convection.
In the embodiment of the present application, a cover plate 1000 is disposed on a side of the second intake switch 501 away from the exhaust port 801, and the cover plate 1000 is used for protecting the housing 300 of the dust-proof mechanism 111.
As shown in fig. 3, a schematic diagram of a dust-proof mechanism 111 in a foldable display device according to an embodiment of the present application is provided; in the first dustproof cavity 30, the first air inlet switch 101 is disposed on an inner wall of the first chamber 301, and the first air outlet switch 201 is disposed on an outer wall of the first chamber 301; the second air inlet switch 501 is disposed on an inner wall of the second chamber 302, and the second air outlet switch 202 is disposed on an outer wall of the second chamber 302.
Further, the first dustproof cavity 30 further includes an exhaust cavity located on one side of the first cavity 301 and the second cavity 302, the exhaust cavity is provided with an exhaust port 801 far away from the first air outlet switch 201 and the second air outlet switch 202, and the exhaust port 801 is connected with the outside of the foldable display device.
Specifically, the first air inlet switch 101 is disposed between the first lead screw 701 and the second lead screw 702, the second air inlet switch 501 is disposed on a side of the first lead screw 701 away from the second lead screw 702, the first air outlet switch 201 and the second air outlet switch 202 are respectively disposed on a side of the second lead screw 702 away from the first lead screw 701, and the first piston 401 is perpendicularly disposed on the first lead screw 701 and the second lead screw 702 and is in threaded connection.
In the embodiment of the present application, the exhaust port 801 is disposed between the first outlet switch 201 and the second outlet switch 202, and a distance from the exhaust port 801 to the first outlet switch 201 is equal to a distance from the exhaust port 801 to the second outlet switch 202.
As shown in fig. 3, the working principle of the first dust-proof cavity 30 is as follows: when the foldable display device is in the unfolded state, in the first dust-proof cavity 30, the first lead screw 701 and the second lead screw 702 synchronously push the first piston 401 to move towards the first direction D1, at this time, the volume of the first chamber 301 increases, which causes the air pressure of the first chamber 301 to decrease, so that the first air inlet switch 101 is opened, the first air outlet switch 201 is closed, the volume of the second chamber 302 decreases, which causes the second air inlet switch 501 to be closed, the second air outlet switch 202 is opened, and the air flow flows out of the air outlet 801; when the foldable display device is in a folded state, the first lead screw 701 and the second lead screw 702 synchronously push the first piston 401 to move towards a second direction, wherein the second direction is opposite to the first direction D1; at this time, the volume of the first chamber 301 decreases, which causes the air pressure in the first chamber 301 to increase, so the first air inlet switch 101 is closed, the first air outlet switch 201 is opened, the volume of the second chamber 302 increases, which causes the air pressure in the second chamber 302 to decrease, which causes the second air inlet switch 501 to open, the second air outlet switch 202 to close, and the air flow flows out from the air outlet 801. Utilize as above illustrated theory of operation, no matter expand or fold condition, the air current all will flow in from the air inlet, and gas vent 801 flows out, and the gas flow process of doing so can be followed the dust inside outside of transferring to of collapsible display device, simultaneously gas flow still will the inside and outside process that forms the air heat transfer of collapsible display device, will the inside heat transfer of collapsible display device to the outside plays radiating effect, has improved collapsible display device's performance and user experience.
Further, the first direction D1 and the second direction are parallel to the central axis of the bending region.
As shown in fig. 4, a top view of a dust-proof mechanism 111 in the foldable display device provided in the embodiment of the present application is shown; the dustproof mechanism 111 includes the housing 300, a first dustproof cavity 30 disposed in the housing 300, and the second dustproof cavity; the first dustproof cavity 30 and the second dustproof cavity are symmetrical structures with the AA line as a symmetry axis.
Furthermore, 2 first air outlet switches 201, 2 second air outlet switches 202, 2 third air outlet switches 601 and 2 fourth air outlet switches 602 are disposed in the first dustproof cavity 30 and the second dustproof cavity; the first intake switch 101 and the third intake switch 102 are respectively disposed on two sides of the cover plate 1000, and the second intake switch 501 and the fourth intake switch 502 are disposed between the first piston 401 and the second piston 402.
As shown in fig. 5, a top view of a dust-proof mechanism 111 in the foldable display device provided in the embodiment of the present application is shown; the dustproof mechanism 111 includes the housing 300, a first dustproof cavity 30 and a second dustproof cavity, the first dustproof cavity 30 is disposed in the housing 300, the filter cover 901 is disposed on one side of the first dustproof cavity 30 away from the second dustproof cavity, the other filter cover 901 is disposed on one side of the second dustproof cavity away from the first dustproof cavity 30, and two adjacent filter covers 901 are communicated with each other through the exhaust port 801.
FIG. 6 is a cross-sectional view of the dust-proof mechanism 111 along the dotted line A-A in FIG. 4; wherein the first piston 401 and the second piston 402 are fixedly connected by a link rod 1100, the link rod 1100 is disposed in the first direction D1, and the link rod 1100 is used for ensuring that the first piston 401 and the second piston 402 move synchronously. Therefore, when the foldable display device is in the unfolded state, the first piston 401 and the second piston 402 move synchronously in the first direction D1, the first air inlet switch 101 and the third air inlet switch 102 are opened, the first air outlet switch 201 and the third air outlet switch 601 are closed, the second air inlet switch 501 and the fourth air inlet switch 502 are closed, the second air outlet switch 202 and the fourth air outlet switch 602 are opened, and the air flow flows out of the air outlet 801;
when the foldable display device is in a folded state, the first piston 401 and the second piston 402 move in the second direction synchronously, the first air inlet switch 101 and the third air inlet switch 102 are closed, the first air outlet switch 201 and the third air outlet switch 601 are opened, the second air inlet switch 501 and the fourth air inlet switch 502 are opened, the second air outlet switch 202 and the fourth air outlet switch 602 are closed, and the air flow flows out of the air outlet 801. Utilize as above illustrated theory of operation, no matter expand or fold condition, the air current all will flow in from the air inlet, and gas vent 801 flows out, and the gas flow process of doing so can be followed the dust inside outside of transferring to of collapsible display device, simultaneously gas flow still will the inside and outside process that forms the air heat transfer of collapsible display device, will the inside heat transfer of collapsible display device to the outside plays radiating effect, has improved collapsible display device's performance and user experience.
FIG. 7 is a cross-sectional view of the dust-proof mechanism 111 taken along the dotted line B-B in FIG. 4; the exhaust port 801 is disposed between the bottom of the housing 300 of the dustproof mechanism 111 and the filter cover 901, and two ends of the filter cover 901 are engaged with the bottom of the housing 300.
Fig. 8 is a three-dimensional schematic view of a dust-proof mechanism 111 in the foldable display device according to the embodiment of the present application; wherein the first piston 401 and the second piston 402 are fixedly connected by a link rod 1100, the link rod 1100 is disposed in the first direction D1, and the link rod 1100 is used for ensuring that the first piston 401 and the second piston 402 move synchronously. The cover plate 1000 completely covers the first dust-proof cavity 30 and the second dust-proof cavity.
Further, one end of the first lead screw 701 penetrates through the side wall of the dust-proof mechanism 111, and the other end of the first lead screw 701 is located between the first piston 401 and the second piston 402.
As shown in fig. 9, which is a right side view of the dust-proof mechanism 111 in fig. 8; the first lead screw 701 and the second lead screw 702 are disposed in axial symmetry with respect to a central connecting line between the exhaust port 801 and the first air intake switch 101, and the cover plate 1000 completely covers the filter cover 901 and the first air intake switch 101.
Fig. 10 is a schematic diagram illustrating an operation principle of an air inlet switch and an air outlet switch of the dust-proof mechanism 111 in the foldable display device according to the embodiment of the present application; the first air inlet switch 101, the first air outlet switch 201, the second air inlet switch 501 and the second air outlet switch 202 are all one-way vent valves. For example, when the airflow flows along the first direction D1, the baffle 2011 in the one-way vent valve is pushed away by the airflow, and the one-way vent valve is connected; when the air flow is in the direction opposite to the first direction D1, the baffles 2011 in the one-way vent valve are blocked by the sidewalls of the housing 300 and the one-way vent valve is closed.
As shown in fig. 11, a schematic position diagram of a dustproof mechanism 111 in a flattened state of the foldable display device provided in the embodiment of the present application; wherein the foldable display device comprises two non-bending areas and a bending area connecting two adjacent non-bending areas, the bending area is provided with the dust-proof mechanism 111, the dust-proof mechanism 111 at least comprises a shell 300 and a first dust-proof cavity 30 arranged in the shell 300, a first piston 401 which moves in the first dustproof cavity 30 is arranged in the first dustproof cavity 30, the first piston 401 divides part of the first dust-proof cavity 30 into a first chamber 301 and a second chamber 302, a first air switch and a first air outlet switch 201 are arranged on the side wall of the first chamber 301, a second air inlet switch 501 and a second air outlet switch 202 are arranged on the side wall of the second chamber 302, the first air intake switch 101 and the second air intake switch 501 are connected to the inside of the foldable display device, the first air outlet switch 201 and the second air outlet switch 202 are connected to the outside of the foldable display device.
The first air inlet switch 101 is disposed near a bottom frame of the foldable display device, and the second air inlet switch 501 is disposed near a back side of a display screen of the foldable display device.
As shown in fig. 12, which is an enlarged schematic view of the dust-proof mechanism 111 at a in fig. 11; a first gear 1121 is fixed to a first end of the first lead screw 701 close to the inner wall of the bottom frame, a second gear 1122 is fixed to a first end of the second lead screw 702 close to the inner wall of the bottom frame, and the first gear 1121 and the second gear 1122 are meshed.
Specifically, a first supporting plate 1111 and a second supporting plate 1112 are further disposed on the top of the dust-proof mechanism 111, one end of the first supporting plate 1111 is disposed on the bending mechanism in the foldable display device, and the other end of the first supporting plate 1111 is disposed on the dust-proof mechanism 111; one end of the second supporting plate 1112 is disposed on the bending mechanism of the foldable display device, and the other end of the second supporting plate 1112 is disposed on the dust-proof mechanism 111;
wherein the first support plate 1111 rotates around the first lead screw 701, and the second support plate 1112 rotates around the first lead screw 701;
when the foldable display device is in an unfolded state, the first gear 1121 rotates in a counterclockwise direction to drive the first lead screw 701 to rotate, the second gear 1122 rotates in a counterclockwise direction to drive the second lead screw 702 to rotate, and further, the first piston 401 and the second piston 402 are simultaneously pushed to move in the first direction D1; when the foldable display device is in a folded state, the first gear 1121 rotates in a clockwise direction and drives the first lead screw 701 to rotate, and the second gear 1122 rotates in the clockwise direction and drives the second lead screw 702 to rotate, so as to simultaneously push the first piston 401 and the second piston 402 to move in the second direction.
Correspondingly, the foldable display device provided by the embodiment of the application is mainly applied to an active matrix organic electroluminescent display panel or a liquid crystal display panel, and has a wide application space in vehicle-mounted, mobile phone, tablet, computer and television products.
The embodiment of the application provides a foldable display device; the foldable display device comprises at least two non-bending areas and a bending area connecting two adjacent non-bending areas, wherein a dustproof mechanism 111 is arranged in the bending area, the dustproof mechanism 111 at least comprises a shell 300 and a first dustproof cavity 30 arranged in the shell 300, a first piston 401 moving in the first dustproof cavity 30 is arranged in the first dustproof cavity 30, part of the first dustproof cavity 30 is divided into a first cavity 301 and a second cavity 302 by the first piston 401, a first air inlet switch 101 and a first air outlet switch 201 are arranged on the side wall of the first cavity 301, a second air inlet switch 501 and a second air outlet switch 202 are arranged on the side wall of the second cavity 302, the first air inlet switch 101 and the second air inlet switch 501 are connected inside the foldable display device, and the first air outlet switch 201 and the second air outlet switch 202 are connected outside the foldable display device, when the first piston 401 moves along a first direction D1, the first air inlet switch 101 is opened, the first air outlet switch 201 is closed, the second air inlet switch 501 is closed, and the second air outlet switch 202 is opened; when the first piston 401 moves along the second direction, the first air inlet switch 101 is closed, the first air outlet switch 201 is opened, the second air inlet switch 501 is opened, and the second air outlet switch 202 is closed; the foldable display device utilizes the bent power to push the piston to change the air pressure in the cavity, and utilizes the one-way control valve to control the opening and closing of the air vent, so that the air pressure in the cavity is always higher than the outside in the folding and unfolding processes of the foldable display device, thereby preventing dust from entering and discharging the dust in the foldable display device; meanwhile, the air flows to form an air heat exchange process inside and outside the foldable display device, heat inside the foldable display device is transferred to the outside, the heat dissipation effect is achieved, and the performance and the user experience of the foldable display device are improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing detailed description is directed to a foldable display device provided in an embodiment of the present application, and the principles and embodiments of the present application are described herein using specific examples, which are provided only to help understand the method and the core concept of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A foldable display device is characterized by comprising at least two non-bending areas and a bending area for connecting two adjacent non-bending areas, wherein a dustproof mechanism is arranged in the bending area;
the dustproof mechanism at least comprises a shell and a first dustproof cavity arranged in the shell, wherein a first piston moving in the first dustproof cavity is arranged in the first dustproof cavity, and the first piston divides part of the first dustproof cavity into a first cavity and a second cavity;
a first air inlet switch and a first air outlet switch are arranged on the side wall of the first cavity, a second air inlet switch and a second air outlet switch are arranged on the side wall of the second cavity, the first air inlet switch and the second air inlet switch are connected to the inside of the foldable display device, and the first air outlet switch and the second air outlet switch are connected to the outside of the foldable display device;
when the first piston moves along a first direction, the first air inlet switch is turned on, the first air outlet switch is turned off, the second air inlet switch is turned off, and the second air outlet switch is turned on; when the first piston moves along the second direction, the first air inlet switch is closed, the first air outlet switch is opened, the second air inlet switch is opened, and the second air outlet switch is closed.
2. The foldable display device of claim 1, wherein the first air inlet switch is disposed on an inner wall of the first chamber and the first air outlet switch is disposed on an outer wall of the first chamber;
the second air inlet switch is arranged on the inner wall of the second cavity, and the second air outlet switch is arranged on the outer wall of the second cavity.
3. The foldable display device of claim 2, wherein the first air intake switch is disposed proximate to a bezel of the foldable display device and the second air intake switch is disposed proximate to a back side of a display screen of the foldable display device.
4. The foldable display device of claim 1, wherein the first dust-proof cavity further comprises an exhaust cavity located at one side of the first cavity and the second cavity, an exhaust port far away from the first air outlet switch and the second air outlet switch is arranged on the exhaust cavity, and the exhaust port is connected with the outside of the foldable display device.
5. The foldable display device of claim 4, wherein a filter cover is disposed on a side of the vent away from the vent cavity, the filter cover comprising a plurality of vent holes.
6. The foldable display device of claim 5, wherein said filter cover is further filled with a dust adsorbing material.
7. The foldable display device of claim 3, wherein the first dust-proof cavity further comprises a first lead screw and a second lead screw arranged in parallel with the first lead screw, and the first lead screw and the second lead screw respectively penetrate through the first dust-proof cavity along the first direction and are fixed on the inner wall of the bottom frame;
the first direction and the second direction are parallel to the central axis of the bending area, and the first screw rod and the second screw rod respectively penetrate through the first piston and are in threaded connection with the first piston.
8. The foldable display device of claim 7, wherein a first gear is fixed to a first end of the first lead screw close to the inner wall of the bottom frame, a second gear is fixed to a first end of the second lead screw close to the inner wall of the bottom frame, and the first gear is engaged with the second gear.
9. The foldable display device of claim 1, wherein the first inlet switch, the first outlet switch, the second inlet switch, and the second outlet switch are all one-way vent valves.
10. The foldable display device of any one of claims 1 to 9, wherein said dust-proof mechanism further comprises a second dust-proof cavity disposed within said housing, a second piston disposed within said second dust-proof cavity and movable within said second dust-proof cavity;
the first piston and the second piston are fixedly connected through a chain connecting rod, and the chain connecting rod is arranged in the first direction.
CN202110834744.3A 2021-07-23 2021-07-23 Foldable display device Active CN113539105B (en)

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EP1408475A1 (en) * 2002-10-11 2004-04-14 Barco N.V. Light emission display arrangements
CN209055901U (en) * 2018-12-10 2019-07-02 海南世纪风行网络科技有限公司 A kind of dust-proof radiating device for computer notebook
WO2019237340A1 (en) * 2018-06-15 2019-12-19 深圳市柔宇科技有限公司 Flexible screen dust-proof mechanism, electronic device and fabrication method for flexible screen dust-proof mechanism
CN110675747A (en) * 2019-09-16 2020-01-10 武汉华星光电半导体显示技术有限公司 Foldable display device
CN210167068U (en) * 2019-09-16 2020-03-20 河南华纳电子技术有限公司 LED display screen
CN210574775U (en) * 2019-11-15 2020-05-19 李莉 OLED flexible screen
CN111508367A (en) * 2020-05-19 2020-08-07 武汉华星光电半导体显示技术有限公司 Foldable display device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1408475A1 (en) * 2002-10-11 2004-04-14 Barco N.V. Light emission display arrangements
WO2019237340A1 (en) * 2018-06-15 2019-12-19 深圳市柔宇科技有限公司 Flexible screen dust-proof mechanism, electronic device and fabrication method for flexible screen dust-proof mechanism
CN209055901U (en) * 2018-12-10 2019-07-02 海南世纪风行网络科技有限公司 A kind of dust-proof radiating device for computer notebook
CN110675747A (en) * 2019-09-16 2020-01-10 武汉华星光电半导体显示技术有限公司 Foldable display device
CN210167068U (en) * 2019-09-16 2020-03-20 河南华纳电子技术有限公司 LED display screen
CN210574775U (en) * 2019-11-15 2020-05-19 李莉 OLED flexible screen
CN111508367A (en) * 2020-05-19 2020-08-07 武汉华星光电半导体显示技术有限公司 Foldable display device

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