CN112382204A

CN112382204A - Display device with curled screen

Info

Publication number: CN112382204A
Application number: CN202011387996.8A
Authority: CN
Inventors: 张凯凯; 何永新; 吴守政; 陈东华; 冯鹤冰; 张晓音
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-02-19
Anticipated expiration: 2040-12-01
Also published as: CN112382204B

Abstract

The application provides a display device curls screen can stretch out for curling the screen and provide the support, and multistage supporting mechanism can effectively increase screen length through stretching out step by step and providing the mode of support at the back of the curling screen that gradually expandes. The step arrangement of the multistage compensation mechanism on the back of the curled screen is matched with the multistage supporting mechanism in order to realize supported offset compensation together.

Description

Display device with curled screen

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of screens, in particular to a display device with a curled screen.

[ background of the invention ]

In the existing telescopic curled screen, there is a telescopic curled screen based on a wireless charging technology, and the wireless charging technology is applied to the curled screen. Specifically, in such a retractable, rollable screen that can be wirelessly charged, the wireless charging device is placed at the reel, hidden inside the reel. For example, a telescopic television box based on a rollable screen automatically extends or retracts a multi-stage telescopic rod by using a motor. However, the existing telescopic type curling screen has the following two problems: 1. the wireless charging technology and Flexible television box do not all relate to the problem of FPC (Flexible Printed Circuit, Flexible Circuit board) end, all set up FPC end and device and mainboard have certain problem in the spool. 2. Taking a television box as an example, the extension device causes that the extension structures at all levels have section height difference, so that the extension device is not suitable for pressing a touch screen.

[ summary of the invention ]

In order to solve the above problems, the present application provides a display device having a curled screen.

A roll screen display device comprising:

a flexible display panel having a flattened portion and a curled portion;

the multi-stage supporting mechanism is positioned on one side of the flexible display panel, which is deviated from the light emitting direction, and is fixedly connected with the flattening part;

at least one multi-stage compensation mechanism, which is located between the multi-stage support mechanism and the flexible display panel and is fixedly connected with the curling part;

along the light emitting direction, the distance between one side surface of the multi-stage supporting mechanism close to the flexible display panel and one side surface of the flexible display panel close to the multi-stage supporting mechanism at the first position is S1, the thickness of the multi-stage compensation mechanism at the first position is S2, wherein S2/S1 is not less than 0.8 and not more than 1.

Optionally, the display device further comprises a housing disposed on one side of the multi-stage support mechanism;

the multi-stage supporting mechanism comprises a first-stage supporting unit, a last-stage supporting unit and at least one second-stage supporting unit, the at least one second-stage supporting unit is arranged between the first-stage supporting unit and the last-stage supporting unit, and the first-stage supporting unit, the at least one second-stage supporting unit and the last-stage supporting unit are sequentially connected in a stage-by-stage manner and sequentially extend out along a first direction perpendicular to the light emitting direction;

the roll-up screen display device comprises at least a first state and a second state,

when the roll screen display device is in a first state, a roll portion of the flexible display panel is at least partially accommodated inside the housing, and the primary support unit, the at least one secondary support unit, and the final support unit at least partially overlap in the light exit direction;

when the display device with the curled screen is in a second state, the shell moves along a second direction opposite to the first direction, and the curled portion of the flexible display panel and the multistage compensation mechanism extend out of the interior of the shell along the first direction relative to the shell and are used for supporting the curled portion of the flat flexible display panel.

Optionally, the multi-stage supporting mechanism is of a sleeve structure, the primary supporting unit and the at least one secondary supporting unit are all sleeved in the final supporting unit, each secondary supporting unit is sequentially nested step by step, and the primary supporting unit is sleeved in the secondary supporting unit adjacent to the primary supporting unit.

Optionally, the multi-stage supporting mechanism is a drawer structure, the primary supporting unit and the at least one secondary supporting unit are both received in the final supporting unit, each secondary supporting unit is sequentially received stage by stage, and the primary supporting unit is received in a secondary supporting unit adjacent thereto.

Optionally, the multi-stage supporting mechanism is a stepped structure, the secondary supporting units adjacent to the final supporting unit are connected to the final supporting unit, each secondary supporting unit is connected in sequence step by step, and the primary supporting unit is connected to the secondary supporting unit adjacent to the primary supporting unit.

Optionally, a sliding groove is formed on a surface of the last supporting unit close to the secondary supporting unit and a surface of the secondary supporting unit close to the primary supporting unit;

stop blocks are arranged on the surface of the secondary supporting unit close to the final stage supporting unit and the surface of the primary supporting unit close to the final stage supporting unit;

the stop blocks are positioned between the front end part and the rear end part of the corresponding sliding grooves.

Optionally, a linkage mechanism is arranged in the secondary support unit, and bayonets are arranged on the surface of the final support unit close to the secondary support unit and the surface of the secondary support unit close to the primary support unit;

in the first direction, the bayonet is positioned in front of the sliding chute, and a linkage mechanism is positioned between the stop block and the front end part of the sliding chute in the same secondary supporting unit;

when the roll screen display device is in the second state, the linkage mechanism of the secondary support unit extends and is caught in the bayonet of the last stage support unit or in the bayonet of an adjacent secondary support unit.

Optionally, a first spring pin is arranged in the final supporting unit, and a second spring pin is arranged in the secondary supporting unit;

a first pin hole and a second pin hole are formed in the surface, close to the final stage supporting unit, of the secondary supporting unit and the surface, close to the final stage supporting unit, of the primary supporting unit;

in the first direction, the first spring pin is arranged between the sliding groove and the bayonet of the corresponding final stage support unit, the second spring pin is arranged between the sliding groove and the bayonet of the corresponding secondary stage support unit, the first pin hole is located between the corresponding stop block and the front end of the sliding groove, and the second pin hole is located between the corresponding sliding groove and the bayonet;

when the roll screen display device is in the first state, a first spring pin of the final stage support unit protrudes and is caught in the second latch hole of the secondary support unit adjacent to the final stage support unit, the second spring pin of the secondary support unit protrudes and is caught in the second latch hole of the secondary support unit adjacent to the secondary support unit or is caught in the second latch hole of the primary support unit, and the linkage mechanism of the secondary support unit protrudes and is caught in the first latch hole of the adjacent secondary support unit or is caught in the first latch hole of the primary support unit;

when the roll screen display device is in the second state, the first spring pin of the final stage support unit is protruded and caught in the first latch hole of the secondary support unit adjacent to the final stage support unit, and the second spring pin of the secondary support unit is protruded and caught in the first latch hole of the secondary support unit adjacent to the secondary support unit or caught in the first latch hole of the primary support unit.

Optionally, the linkage mechanism comprises a first linkage body and a second linkage body, the first linkage body and the second linkage body are coaxially connected;

when the display device is in the first state, the first linkage body of the secondary support unit extends out and is clamped in the first bolt hole of the adjacent secondary support unit or the first bolt hole of the primary support unit;

when the display device is in the second state, the second coupling body of the secondary support unit adjacent to the final support unit protrudes and is clamped in the bayonet of the final support unit, and the second coupling body of the secondary support unit protrudes and is clamped in the bayonet of the adjacent secondary support unit.

Optionally, the first linkage body includes an upper plug, a first connecting rod and a lower plug, the second linkage body includes a lower plug, a second connecting rod and an upper plug, the first connecting rod and the second connecting rod are coaxially connected, the upper plug and the lower plug are respectively connected to two ends of the first connecting rod, and the lower plug and the upper plug are respectively connected to two ends of the second connecting rod;

when the first linkage body extends out, the upper plug extends out and is positioned between the stop block and the rear end part of the sliding groove, and the lower plug extends out and is clamped in the first plug hole;

when the second coupling body extends out, the lower plug pin extends out and is positioned between the front end part and the rear end part of the sliding groove, and the upper plug pin extends out and is clamped in the bayonet.

Optionally, in the first interlocking body and the second interlocking body, two ends of the first connecting rod and two ends of the second connecting rod are respectively provided with a sliding hole, and a cylinder is arranged at an end of the upper bolt and the lower bolt close to the first connecting rod and an end of the lower bolt and the upper bolt close to the second connecting rod corresponding to the sliding holes; the cylinder may slide in the slide hole when the first interlocking body or the second interlocking body is expanded and contracted.

Optionally, the first spring pin is connected in the final stage support unit by an elastic member, and the second spring pin is connected in the secondary stage support unit by an elastic member.

Optionally, the final supporting unit further comprises a third spring pin, and the secondary supporting unit adjacent to the final supporting unit is further provided with a third pin hole;

when the display device with the curled screen is in the first state, the third spring pin extends out and is clamped in the third bolt hole.

the last stage supporting unit is provided with a first spring pin and a third spring pin, the surface of the secondary supporting unit close to the last stage supporting unit and the surface of the primary supporting unit close to the last stage supporting unit are respectively provided with a first pin hole, the surface of the secondary supporting unit adjacent to the last stage supporting unit close to the last stage supporting unit is also provided with a third pin hole, and the secondary supporting unit is provided with a first linkage body and a second linkage body;

in the first direction, the third spring pin is located behind the sliding chute, the first spring pin is located in front of the sliding chute, the third pin hole is located behind the sliding chute, the first pin hole is located between the front end portion and the rear end portion of the sliding chute, the first linkage body is located between the front end portion and the rear end portion of the sliding chute, and the second linkage body is located in front of the sliding chute;

when the display device is in the first state, the first spring pin retracts into the primary support unit, the third spring pin extends out and is clamped in the third bolt hole, the first linkage body of the secondary support unit extends out and is clamped in the first bolt hole of the adjacent secondary support unit or the primary support unit, and the second linkage body of the secondary support unit retracts into the secondary support unit;

when the roll screen display device is in the second state, the first spring pin protrudes and is caught in the first latch hole of the secondary support unit adjacent to the final support unit, and the second interlocking body of the secondary support unit protrudes and is caught in the first latch hole of the adjacent secondary support unit or the primary support unit.

Optionally, the first linkage body comprises a first pin, a first connecting rod and a first plug, and the second linkage body comprises a second pin, a second connecting rod and a second plug;

the first link has a first upper end proximate the final stage support unit and a first lower end proximate the primary support unit, and the second link has a second upper end proximate the final stage support unit and a second lower end proximate the primary support unit;

in the first direction, the first upper end is located rearward of the first lower end, and the second upper end is located forward of the second lower end;

the first bolt is connected to the first upper end, the first bolt is connected to the lower end, the second bolt is connected to the second upper end, and the second bolt is connected to the second lower end;

when the first linkage body extends out, the first bolt extends out and is positioned between the front end part and the rear end part of the sliding groove, and the first bolt extends out and is clamped in the first bolt hole;

when the second linkage body extends out, the second bolt extends out and is positioned in front of the sliding groove, and the second bolt extends out and is clamped in the first bolt hole.

Optionally, the first spring pin has a flat surface and an arcuate surface, the arcuate surface being forward of the flat surface in the first direction, the first pin hole forcing the first spring pin into the final stage support unit through the arcuate surface when the final stage support unit is moved from the extended position to the retracted position.

Optionally, the number of the multi-stage supporting mechanisms is two, and the multi-stage supporting mechanisms are a first multi-stage supporting mechanism and a second multi-stage supporting mechanism;

the first direction of the plurality of support units in the first multi-stage support mechanism is opposite to the first direction of the plurality of support units in the second multi-stage support mechanism, and the retraction direction of the plurality of support units in the first multi-stage support mechanism is opposite to the retraction direction of the plurality of support units in the second multi-stage support mechanism.

Optionally, a flexible circuit board is disposed on the flattening portion for inputting signals.

Optionally, the multi-stage compensation mechanism employs a crimpable material.

The disclosed display device that curls of this application embodiment can stretch out for the screen that curls and provide the support, and multistage supporting mechanism can effectively increase screen length through stretching out step by step and providing the mode of support at the back of the screen that curls that gradually expandes. The step arrangement of the multistage compensation mechanism on the back of the curled screen is matched with the multistage supporting mechanism in order to realize supported offset compensation together.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described 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 a schematic side view of a rolled-screen display device provided in embodiment 1 of the present application;

fig. 2 is a schematic side view of a flexible display panel and a multi-stage compensation mechanism of a roll screen display device according to embodiment 1 of the present application during rolling;

fig. 3 is a schematic thickness diagram of a flexible display panel, a multi-stage compensation mechanism, and a multi-stage support mechanism in a first position in a roll screen display device provided in embodiment 1 of the present application;

fig. 4a is a schematic view of a display device with a rolled screen according to embodiment 1 of the present application in a first state;

fig. 4b is a schematic view of a display device with a rolled screen according to embodiment 1 of the present application in a first state;

fig. 5 is a schematic cross-sectional view of a multi-stage support mechanism in a display device of a roll screen according to embodiment 1 of the present application, which is in a sleeve structure;

fig. 6 is a schematic cross-sectional view of a multi-stage supporting mechanism in a display device of a roll screen according to embodiment 1 of the present application, which is in a drawer structure;

fig. 7 is a schematic cross-sectional view of a multi-stage supporting mechanism in a display device of a roll screen according to embodiment 1 of the present application, which has a stepped structure;

fig. 8 is a schematic view of the orientation of the multi-stage support mechanism in the extended state of the roll screen display device provided in embodiment 1 of the present application;

fig. 9 is a schematic structural view of a final stage supporting unit in the display device of the roll screen provided in embodiment 1 of the present application;

fig. 10 is a schematic structural diagram of a secondary support unit in the display device of the roll screen provided in embodiment 1 of the present application;

fig. 11 is a schematic structural view of a linkage mechanism in the roll screen display device provided in embodiment 1 of the present application;

fig. 12 is a schematic structural diagram of a primary supporting unit in the display device of the roll screen provided in embodiment 1 of the present application;

fig. 13 is a schematic view of a display device of a roll screen according to embodiment 1 of the present application, in which a multi-stage support mechanism is in a fully retracted state;

fig. 14 is a schematic view of a display device of a roll screen provided in embodiment 1 of the present application, in which a secondary support unit and a primary support unit in a multi-stage support mechanism are in an extended state;

fig. 15 is a schematic view of a display device of a roll screen provided in embodiment 1 of the present application, in which a multistage supporting mechanism is in a fully extended state;

fig. 16 is a schematic structural view of a final stage supporting unit in the display device of the roll screen provided in embodiment 2 of the present application;

fig. 17 is a schematic structural view of a secondary support unit in the display device of the roll screen provided in embodiment 2 of the present application;

fig. 18 is a schematic structural view of a link mechanism in the roll screen display device provided in embodiment 2 of the present application;

fig. 19 is a schematic structural diagram of a primary supporting unit in the display device of the roll screen provided in embodiment 2 of the present application;

FIG. 20 is a schematic view of a multi-stage support mechanism in a fully retracted state in a roll screen display device as provided in example 2 of the present application;

fig. 21 is a schematic view of a display device of a roll screen according to embodiment 2 of the present application, in which a secondary support unit and a primary support unit of a multi-stage support mechanism are in an extended state;

fig. 22 is a schematic view of a display device of a roll screen according to embodiment 2 of the present application, in which a multi-stage support mechanism is in a fully extended state;

fig. 23 is a schematic view of a display device with two multi-stage supporting mechanisms according to the display device of embodiment 3.

Reference numerals:

100-a housing; 101-a fixed shaft; 200-a flexible display panel; 201-flattening section; 202-curl; 203-signal input; 300-a multi-stage support mechanism; 301-final stage support unit; 302-a secondary support unit; 303-primary support unit; 304-bayonet; 305-a chute; 306-a bump; 307-a first spring pin; 308-a second spring pin; 309-a third spring pin; 310-a first latch hole; 311-a second plug hole; 312-a third latch hole; 313-a stop block; 314-a notch; 315-linkage mechanism; 316-first linkage; 317-second coupling body; 318-upper bolt; 319-first link; 320-lower plug; 321-a lower bolt; 322-a second link; 323-upper plug; 324-plane; 325-arc surface; 326-bevel; 327-a first bolt; 328-a first plug; 329-a second bolt; 330-a second plug; 331-a first upper end; 332-a first lower end; 333-a second upper end; 334-a second lower end; 335-a slide hole; 336-cylinder; 300' -a first multi-stage support mechanism; 300 "-second multi-stage support mechanism; 400-multi-stage compensation mechanism.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all 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 terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe components in a roll screen display device, these components should not be limited to these terms. These terms are only used to distinguish one element from another. For example, the first direction may also be referred to as a second direction, and similarly, the second direction may also be referred to as a first direction, without departing from the scope of the embodiments of the present application.

Example 1

Embodiment 1 of the application discloses display device curls, can satisfy the user can expand when wanting to use and watch, can accomodate when not wanting to use and the user can select the demand of watching the size of screen according to self demand, can also overcome in addition that prior art can't solve with wireless charging technique to compatible and because the flexible problem of pressing that influences the touch-sensitive screen of curling screen.

Referring to fig. 1, embodiment 1 of the present application discloses a roll screen display device. The roll screen display device includes a housing 100, a flexible display panel 200, at least one multi-stage support mechanism 300, and at least one multi-stage compensation mechanism 400. The flexible display panel 200 has a flattened portion 201 and a curled portion 202. The multi-stage supporting mechanism 300 is located on one side of the flexible display panel 200 departing from the light emitting direction, and is fixedly connected to the flattening portion 201. The multi-stage compensation mechanism 400 is located between the multi-stage support mechanism 300 and the flexible display panel 200, and is fixedly connected to the curling portion 202.

Through the structure, one part of the flexible display panel 200 can be pulled out and unfolded to form the flattening part 201, a screen display picture on the flattening part 201 is provided for a user to watch, and the length of the flattening part 201, which can be pulled out and unfolded, of the flexible display panel 200 can be selected at will according to the requirements of the user. The flexible circuit board is arranged on the flattening portion 201 and used for inputting signals, and the signal input end 203 of the flexible circuit board is located at the end portion, far away from the curling portion 202, of the flattening portion 201, so that the problems that the flexible circuit board is broken down and damaged after the curling portion 202 is curled for multiple times can be prevented. And then the multi-stage supporting mechanism 300 with certain hardness provides support for the flattening part 201 of the flexible display panel 200, so that when the flexible display panel 200 is pulled out and unfolded, the hardness of the flattening part 201 can be maintained to ensure that the screen can smoothly display pictures. The gap between the multi-stage supporting mechanism 300 and the flexible display panel 200 is filled and compensated by the multi-stage compensating mechanism 400, so as to provide a rigid support. The curl portion 202, which is not pulled out of the flexible display panel 200, is curled and stored in the case 100, the case 100 plays a role of shielding dust and protecting the flexible display panel 200, the fixing shaft 101 is installed in the case 100, the curl portion 202 is wound on the fixing shaft 101 together with the multi-stage compensation mechanism 400, and the curl portion 202 and the multi-stage compensation mechanism 400 are sent out of the case 100 together with the self-rolling of the fixing shaft 101 when necessary.

In the above structure, the flexible Display panel 200 and the multi-stage compensation mechanism 400 are made of a bendable flexible material, wherein the flexible Display panel 200 may be, for example, a flexible OLED (Organic light emitting semiconductor) mounted on a flexible material such as plastic or metal foil; the flexible material used in the multi-stage compensation mechanism 400 may be a thin steel sheet, a film such as PI (Polyimide), PET (polyethylene terephthalate), or a sandwich material or a material with a hollow pattern. As shown in fig. 2, so that the curvature of the flexible display panel 200 can be maintained when the panel is rolled up to ensure that the screen is not damaged. The multi-stage supporting mechanism 300 is made of a material with a relatively thick thickness and a relatively high hardness to ensure the flatness of the flattening portion 201. The multi-stage compensation mechanism 400 generally uses a filling material, and mainly functions to fill the space between the screens of the curling portion 202, and the gap between the flat portion 201 and the multi-stage support mechanism 300.

When a part of the screen of the flexible display panel 200 is pulled out to form the flattening portion 201 to display the picture for the user to see, in each cross section of the flattening portion 201, along the light emitting direction, a distance between a side surface of the multi-stage supporting mechanism 300 close to the flexible display panel 200 and a side surface of the flexible display panel 200 close to the multi-stage supporting mechanism 300 at a first position is S1, and a thickness of the multi-stage compensation mechanism 400 at the first position is S2, wherein 0.8 ≦ S2/S1 ≦ 1, as shown in fig. 3. In consideration of the deformation of the flexible display panel 200 that may occur during winding and the spatial compression between the screens of the respective layers in the curl 202 due to the winding deformation, the multi-stage compensation mechanism 400 is not generally configured to be of a size that completely fills the space between the flexible display panel 200 and the multi-layer support mechanism to facilitate the winding of the multi-stage compensation mechanism 400 within the housing 100 along with the curl 202. Meanwhile, when the part of the flexible display panel 200 is pulled out to form the flattening portion 201, a certain gap is left between the pulled-out multi-stage compensation mechanism 400 and the multi-stage support mechanism 300, so as to facilitate the extension and contraction of the multi-stage support mechanism 300 and the extension and contraction of the flexible display panel 200 and the multi-stage compensation mechanism 400.

Referring to fig. 3, in the roll screen display device of this embodiment 1, the multi-stage supporting mechanism 300 includes a first-stage supporting unit 303, a last-stage supporting unit 301, and at least one second-stage supporting unit 302, the at least one second-stage supporting unit 302 is disposed between the first-stage supporting unit 303 and the last-stage supporting unit 301, and the first-stage supporting unit 303, the at least one second-stage supporting unit 302, and the last-stage supporting unit 301 are sequentially connected step by step and sequentially extend in a first direction (x direction (see fig. 8)) perpendicular to the light-emitting direction. Referring to fig. 4a and 4b, the roll screen display device comprises at least a first state and a second state. When the roll screen display device is in the first state (as shown in fig. 4 a), the roll portion 202 of the flexible display panel 200 is at least partially accommodated inside the housing 100, and the primary support unit 303, the at least one secondary support unit 302, and the final support unit 301 at least partially overlap in the light emitting direction; when the rolled screen display device is in the second state (as shown in fig. 4 b), the housing 100 is moved in a second direction (the (-x direction (see fig. 8)) opposite to the first direction, and the rolled portion 202 of the flexible display panel 200 and the multi-stage compensation mechanism 400 protrude from the inside of the housing 100 in the first direction with respect to the housing 100, and serve to support the rolled portion 202 of the flattened flexible display panel 200. The first state is a completely folded state of the display device with the rolled screen, and the second state is a completely unfolded state of the display device with the rolled screen.

As shown in fig. 3, 4a and 4b, in the multi-stage supporting mechanism 300, each stage of the supporting units 303 is connected in stages and sequentially interlocked, and the final stage supporting unit 301 is fixed with the flattening portion 201 of the flexible display panel 200. When the roll screen display device is in the first state, the other secondary support units 302 and the primary support unit 303 are all housed in the final stage support unit 301, and regardless of the shape and size of the final stage support unit 301, the secondary support unit 302 and the primary support unit 303 are similar in shape to the final stage support unit 301 and are not larger in size than the final stage support unit 301. This makes each of the supporting units in the multi-stage supporting mechanism 300 at least partially overlap in the tangential direction of the flattening portion 201 (i.e., in the light outgoing direction), that is, the plurality of supporting units are in a stacked arrangement. When the display device with the rolled screen is in the second state, the other secondary supporting units 302 and the primary supporting unit 303 all extend out of the final supporting unit 301, and the rolled portions 202 in the flexible display panel 200, which are fed out from the housing 100 by the fixed shaft 101 and supported together with the multi-stage compensation mechanism 400, are fed out of the flat screen, and these rolled portions 202 are fed out of the flat screen to form a new flat portion 201 which is completely unfolded with the original flat portion 201. Since the flexible display panel 200 is difficult to be flattened without supporting its rigidity by other components, it is troublesome for the user to operate and view, and the original flattening portion 201 is already completely flattened and supported by the final stage supporting unit 301 of the multi-stage supporting mechanism 300, and the flattening of the curling portion 202 sent out from the housing 100 requires the multi-stage supporting mechanism 300 and the multi-stage compensating mechanism 400 to provide a supporting force together to completely flatten it, so that the completely flattened flattening portion 201 can be formed together with the original flattening portion 201. Because the extension and retraction of all the supporting units and the extension and retraction of the multistage compensation mechanism 400 are the mechanical linkage mechanism 315, no user operation is required, so that the user can conveniently enlarge the area of the flattening portion 201 by pulling the housing 100, thereby enlarging the screen of the display picture and improving the viewing experience.

Referring to fig. 5, 6 and 7, in the roll screen display device of the present embodiment 1, the multi-stage supporting mechanism 300 may be designed in the following three structures.

Referring to fig. 5, the multi-stage supporting mechanism 300 is a sleeve structure, a primary supporting unit 303 and at least one secondary supporting unit 302 are sleeved in a final supporting unit 301, each secondary supporting unit 302 is nested step by step in sequence, and the primary supporting unit 303 is sleeved in the secondary supporting unit 302 adjacent to the primary supporting unit 303. In the multi-stage supporting mechanism 300 designed to be a sleeve structure, the firmness and stability of the last stage supporting unit 301 are high, and the tolerance between each supporting unit and the flexible display panel 200 when the secondary supporting unit 302 and the first stage supporting unit 303 are extended and the multi-stage compensating mechanism 400 and the flexible display panel 200 are extended can be reduced by designing the wall thickness of each supporting unit in the light emitting direction to be as thin as possible, so that the tolerance designed for adapting to each supporting unit by the multi-stage compensating mechanism 400 is smaller, which is more beneficial to the extension and retraction of the flexible display panel 200 and the multi-stage compensating mechanism 400, and a user can avoid the problem that the flexible display panel 200 is jammed in the curling or flattening process when in use.

Referring to fig. 6, the multi-stage supporting mechanism 300 is a drawer structure, a primary supporting unit 303 and at least one secondary supporting unit 302 are received in a final stage supporting unit 301, each secondary supporting unit 302 is sequentially received stage by stage, and the primary supporting unit 303 is received in the secondary supporting unit 302 adjacent thereto. In the multi-stage supporting mechanism 300 designed in the drawer structure, the final stage supporting unit 301, the secondary stage supporting unit 302, and the primary stage supporting unit 303 are all in the shape of an "n", and since the final stage supporting unit 301 has high firmness and stability, the final stage supporting unit 301 and the flattening portion 201 are fixedly connected together, and the other secondary stage supporting units 302 and the primary stage supporting unit 303 are all telescopically accommodated in the final stage supporting unit 301. Therefore, when the number of the secondary support units 302 is more than one, the size thereof is reduced stepwise, and the size of the primary support unit 303 is minimized. The end surfaces of the last stage supporting unit 301, the secondary supporting unit 302 and the first stage supporting unit 303, which are far away from the flattening portion 201, are designed to be flush, so that a user can conveniently place the display device with the coiled screen on a platform such as a desktop horizontally, and the appearance of the whole display device with the coiled screen is attractive.

Referring to fig. 7, the multi-stage supporting mechanism 300 is a stepped structure, and the secondary supporting units 302 adjacent to the final supporting unit 301 are coupled to the final supporting unit 301, each of the secondary supporting units 302 are sequentially coupled step by step, and the primary supporting unit 303 is coupled to the secondary supporting unit 302 adjacent thereto. In the multi-stage supporting mechanism 300 designed to have the stepped structure, the last-stage supporting unit 301, the secondary supporting unit 302 and the first-stage supporting unit 303 are flat plates having the same thickness, and since the firmness and stability of the last-stage supporting unit 301 are high, the last-stage supporting unit 301 and the flattening portion 201 are fixedly connected together, the rest secondary supporting units 302 and the rest primary supporting units 303 can be arranged step by step along the direction perpendicular to the light emitting direction, that is, if the light emitting direction is the vertical direction, the arrangement direction of the secondary supporting units 302 and the primary supporting units 303 is the horizontal direction. Thus, the support units after being extended have a small step difference between the support units 303 of each stage. In addition, the above arrangement may also have two specific embodiments, one is that the last supporting unit 301 is fixed to one side (or one end) of the flattening portion 201, the other supporting units are arranged step by step toward the other side (or the other end) of the flattening portion 201, the other supporting units are fixed to the center of the flattening portion 201, and the other supporting units are respectively arranged step by step from both sides of the last supporting unit 301 toward both sides (or both ends) of the flattening portion 201. Of course, in other embodiments, the secondary support units 302 and the primary support units 303 may be arranged in stages along the direction opposite to the light emitting direction, that is, if the light emitting direction is a vertical upward direction, the arrangement direction of the secondary supporting units 302 and the primary supporting units 303 is a vertical downward direction, but the secondary supporting units 302 are not required to be arranged too much in this embodiment, since this would increase the thickness of the entire multi-stage supporting mechanism 300 and the differences between the plurality of secondary supporting units 302, the secondary supporting units 302 and the primary supporting unit 303 are large, the thickness of the multi-stage compensating mechanism 400 is set correspondingly large, and accordingly the space required between the screens of the curling portion 202 of the flexible display panel 200 within the housing 100 is large, this results in the inability to make the overall size of the rolled screen display device small, limiting the design and manufacturing process of the rolled screen display device.

The structure of the multi-stage support mechanism 300 of the roll screen display device of the present embodiment 1 is not limited to the above three structures, and the structure of the multi-stage support mechanism 300 according to the present embodiment 1 is a structure that can realize a function of sequentially extending each support unit step by step to support the screen of the roll screen fed out from the housing 100.

In the multi-stage supporting mechanism 300 in the roll screen display device of the embodiment 1, the plurality of supporting units capable of sequentially extending and retracting step by step are extended and retracted and retained by the linkage device disposed between two adjacent supporting units, as shown in fig. 8, the linkage device may be disposed at both ends of the supporting unit along the first direction (x direction) or may be disposed at both ends of the supporting unit along the third direction (y direction).

The principle of the multi-stage support mechanism 300 for realizing the sequential stepwise telescopic linkage is described in detail below, and in the multi-stage support mechanism 300 of the present embodiment 1, the principle of the multi-stage linkage sequential stepwise telescopic linkage is consistent regardless of the number of the secondary support units 302, and the number of the secondary support units 302 is first described below, that is, the multi-stage support mechanism 300 includes one final support unit 301, one secondary support unit 302, and one primary support unit 303.

Referring to fig. 9 to 15, in the multi-stage supporting mechanism 300, various components are respectively designed on the first-stage supporting unit 303, the second-stage supporting unit 302 and the last-stage supporting unit 301 to form a mechanical linkage structure, so that the first-stage supporting unit 303, the second-stage supporting unit 302 and the last-stage supporting unit 301 can sequentially extend and retract step by step.

In the final stage support unit 301, a bayonet 304, a slide groove 305, and a projection 306 are provided on a surface close to the secondary support unit 302, and a first spring pin 307 and a third spring pin 309 are provided in the final stage support unit 301. In the first direction (i.e., the extending direction of the support unit), the bayonet 304 is located in front of the slide groove 305, the projection 306 is provided at the rear end portion of the surface of the final stage support unit 301 close to the secondary support unit 302, the first spring pin 307 is provided between the slide groove 305 and the bayonet 304, and the third spring pin 309 is provided between the slide groove 305 and the projection 306. The first spring pin 307 and the third spring pin 309 are connected in the final stage support unit 301 by elastic members.

In the secondary supporting unit 302, a first pin hole 310, a second pin hole 311, a third pin hole 312, a stopper 313, a notch 314, and a linkage mechanism 315 are provided on a surface close to the final stage supporting unit 301, a bayonet 304, a slide groove 305, and a protrusion 306 are provided on a surface close to the primary supporting unit 303, and a linkage mechanism 315 and a second spring pin 308 are provided in the secondary supporting unit 302. In the first direction, a first latch hole 310 is located between a stop block 313 and a front end of the sliding groove 305, a second latch hole 311 is located between the sliding groove 305 and the bayonet 304, a third latch hole 312 is located between the sliding groove 305 and a protrusion 306, the stop block 313 is located between the front end and a rear end of the sliding groove 305, a notch 314 is located at a rear end of the secondary supporting unit 302 close to the surface of the final stage supporting unit 301, the protrusion 306 is located at the rear end of the secondary supporting unit 302 close to the surface of the primary supporting unit 303, the bayonet 304 is located in front of the sliding groove 305, a linkage mechanism 315 is located between the stop block 313 and the front end of the sliding groove 305, a second spring pin 308 is located between the sliding groove 305 and the bayonet 304, and the second spring pin 308 is connected in the secondary supporting unit 302 through. The linkage 315 may be a lever structure or a screw structure, and includes a first linkage 316 and a second linkage 317, and the first linkage 316 and the second linkage 317 are coaxially connected, and the elastic force is provided by an elastic body to keep the linkage in an outward extending state. The first interlocking body 316 includes an upper plug 318, a first link 319, and a lower plug 320, the second interlocking body 317 includes a lower plug 321, a second link 322, and an upper plug 323, the first link 319 and the second link 322 are coaxially connected, the upper plug 318 and the lower plug 320 are respectively connected to both ends of the first link 319, and the lower plug 321 and the upper plug 323 are respectively connected to both ends of the second link 322. In the first and second interlocking

bodies

316 and 317, both ends of the first link 319 and both ends of the second link 322 are provided with slide holes 335, respectively, and the ends of the upper and

lower pins

318 and 320 near the first link 319 and the ends of the lower and

upper pins

321 and 323 near the second link 322 are provided with cylinders 336 corresponding to the slide holes 335. When the first interlocking body 316 or the second interlocking body 317 expands and contracts, the cylinder 336 can slide in the slide hole 335. The buffer structure of the slide hole 335 and the cylinder 336 is arranged in the first interlocking body 316 and the second interlocking body 317, so that the first interlocking body 316 and the second interlocking body 317 have a buffer function in the telescopic process, the internal stress between the parts is reduced, and the buffer and lubrication effects are provided for the supporting units in the telescopic process.

In the first-stage supporting unit 303, a surface close to the final-stage supporting unit 301 is provided with a first pin hole 310, a second pin hole 311, a stopper 313, and a notch 314. In the first direction, the second latch hole 311 is located in front of the first latch hole 310, the stopper 313 is located behind the first latch hole 310, and the protrusion 306 is provided at the rear end portion of the surface of the primary support unit 303 close to the secondary support unit 302.

When the roll screen display device is in the first state, the final stage support unit 301, the secondary support unit 302, and the primary support unit 303 are arranged in a stack and all are in the fully retracted position. The first spring pin 307 of the final stage support unit 301 protrudes and is caught in the second latch hole 311 of the secondary support unit 302 adjacent to the final stage support unit 301, and the third spring pin 309 protrudes and is caught in the third latch hole 312. The second spring pins 308 of the secondary support unit 302 are protruded and caught in the second latch holes 311 of the primary support unit 303, and the link mechanism 315 of the secondary support unit 302 is protruded and caught in the first latch holes 310 of the primary support unit 303. At this time, the first interlocking body 316 of the interlocking mechanism 315 of the secondary supporting unit 302 is protruded and caught in the first latch hole 310 of the primary supporting unit 303, and when the first interlocking body 316 is protruded, the upper latch 318 is protruded and located between the stopper 313 and the rear end portion of the slide groove 305, and the lower latch 320 is protruded and caught in the first latch hole 310.

When the roll screen display device is in the second state, the final stage support unit 301, the secondary stage support unit 302, and the primary stage support unit 303 are stepped and all in the fully extended position. The first spring pin 307 of the final stage support unit 301 protrudes and is caught in the first latch hole 310 of the secondary support unit 302 adjacent to the final stage support unit 301, and the third spring pin 309 protrudes and is in a relaxed state. The second spring pins 308 of the secondary support unit 302 protrude and are caught in the first pin holes 310 of the primary support unit 303, and the link mechanism 315 of the secondary support unit 302 protrudes and is caught in the bayonet 304 of the final support unit 301. At this time, the first coupling body 316 of the coupling mechanism 315 of the secondary support unit 302 is retracted into the secondary support unit 302, the second coupling body 317 is protruded to be caught in the catching opening 304 of the final stage support unit 301, the lower plug 321 is protruded to be located between the front end portion and the rear end portion of the chute 305 when the second coupling body 317 is protruded, and the upper plug 323 is protruded to be caught in the catching opening 304.

The sliding slot 305 and the stop block 313 are provided to enable the extension and retraction distance of each supporting unit to be limited within a required range in the extension and retraction process, and the support units can be mutually driven to extend and retract step by step. The linkage 315 and the bayonet 304 are provided to limit the extension or retraction of each support unit, and cooperate with the stop 313 and the sliding slot 305 to further achieve the gradual extension or retraction of each support unit. The notches 314 and the protrusions 306 are provided to enable the support units to be positioned during the retraction process, avoid the excessive retraction distance and enable the support units to achieve end face alignment in the light emitting direction. The first spring pin 307, the second spring pin 308, the first pin hole 310 and the second pin hole 311 are provided to be matched with the linkage mechanism 315, so that each supporting unit realizes mechanical linkage matching in sequence step by step in the extension and retraction process. The third spring pin 309 is provided to provide a further layer of spacing between the final support unit 301 and the adjacent secondary support unit 302.

The linkage mechanism 315 is provided as a first linkage body 316 and a second linkage body 317 which are coaxially connected, and realizes a linkage and limit function in which one linkage mechanism 315 performs both an extending motion and a retracting motion. The first and second interlocking

bodies

316 and 317 are further designed in a "pin-rod-pin" structure that is movably hinged to each other, effectively linking the connection of both surfaces of the secondary support unit 302, and playing a role of transferring the linkage and stepwise sequential telescopic distribution during the telescopic process of the secondary support unit 302, i.e., when the secondary support unit 302 is extended, the retraction of the first interlocking body 316 means that the primary support unit 303 of the next stage can be extended with respect to the secondary support unit 302, and when the secondary support unit 302 is retracted, the retraction of the second interlocking body 317 means that the secondary support unit 302 can be retracted together with the primary support unit 303.

In the display device of the curled screen in this embodiment 1, the multi-stage supporting mechanism 300, the multi-stage compensation mechanism 400 and the flexible display panel 200 jointly realize the linkage telescopic function, a plurality of supporting units of the multi-stage supporting mechanism 300 sequentially extend step by step, the next supporting unit 303 extends after the first supporting unit 303 extends completely, the supporting unit extending last retracts first when retracting, and therefore the first-in and second-out functions of the supporting units are realized. The final stage supporting unit 301 is stationary throughout the sequential stepwise extension and retraction of the multi-stage supporting mechanism 300.

When a user needs to view a larger screen, the area of the flattened portion 201 of the flexible display panel 200 is enlarged by pulling the housing 100 to expand the screen, the secondary support unit 302 and the primary support unit 303 are first extended outward relative to the final support unit 301 (as shown in fig. 14), and during the extension process, since the end surface of the final support unit 301 where the first spring pin 307 and the third spring pin 309 are connected to the secondary support unit 302 is arc-shaped, and the lower plug 320 of the secondary support unit 302 where the first interlocking body 316 of the primary support unit 303 is connected is cylindrical, the arc can be extruded and the cylindrical shape can only be blocked, so that the first spring pin 307 is withdrawn from the second plug hole 311 of the secondary support unit 302, and the third spring pin 309 is withdrawn from the third plug hole 312 of the secondary support unit 302, and the secondary support unit 302 and the primary support unit 303 are extended together. When the secondary supporting unit 302 is extended to the maximum distance, the stopper block 313 of the secondary supporting unit 302 is stopped by the front end portion of the slide groove 305 of the final stage supporting unit 301, the first spring pin 307 is extended and snapped into the second pin hole 311 of the secondary supporting unit 302, the upper pin 318 of the first linkage body 316 is pushed in by the front end portion of the slide groove 305 of the final stage supporting unit 301, the lower pin 320 of the first linkage body 316 is disengaged from the first pin hole 310 of the primary supporting unit 303, since the end surface of the secondary supporting unit 302 connecting the second spring pin 308 of the primary supporting unit 303 is arc-shaped, the arc-shaped can be pushed out, the second spring pin 308 is withdrawn from the second pin hole 311 of the primary supporting unit 303, the primary supporting unit 303 can be extended outward with respect to the secondary supporting unit 302 and the final stage supporting unit 301 (as shown in fig. 15), and at this time, the lower pin 321 of the second linkage body 317 is extended from the inside of the secondary supporting unit 302 due to the exit of the stopper block 313 of the primary supporting unit 303, the upper plug 323 accompanying the second coupling body 317 is protruded and inserted into the bayonet 304 of the final stage support unit 301 so that the secondary stage support unit 302 is fixed together with the final stage support unit 301, and at this time, the stopper 313 of the primary stage support unit 303 moves in the slide groove 305 of the secondary stage support unit 302 until being stopped by the front end of the slide groove 305 of the secondary stage support unit 302, and the second spring pin 308 of the secondary stage support unit 302 is inserted into the first pin hole 310 of the primary stage support unit 303. At this time, the flexible display panel 200 and the multi-stage compensation mechanism 400 are correspondingly pulled out from the housing 100 by the same pulling distance as the extension distance of the multi-stage support mechanism 300, and the stepped difference formed between the adjacent support units is compensated by the multi-stage compensation mechanism 400 extending from the housing 100.

When the user does not look any more, the area of the flattened portion 201 of the flexible display panel 200 is reduced by pulling the housing 100 to restore the screen size, the first-stage support unit 303 is first retracted inward with respect to the second-stage support unit 302 and the last-stage support unit 301 (as shown in fig. 14), the first-stage support unit 303 can be pushed since the end surface of the second spring pin 308 of the first-stage support unit 303 connected to the second-stage support unit 302 is arc-shaped, the arc can be pushed out, the second spring pin 308 is withdrawn from the first pin hole 310 of the first-stage support unit 303, the first-stage support unit 303 can be pushed, the last-stage support unit 301 and the second-stage support unit 302 do not move together with the first-stage support unit 303 since the last-stage support unit 301 and the second-stage support unit 302 are fixedly connected together, the stopper block 313 of the first-stage support unit 303 slides in the sliding groove 305 of the second-stage support unit 302 until, when the primary support unit 303 is completely retracted, the second spring pin 308 of the secondary support unit 302 protrudes and is snapped into the second pin hole 311 of the primary support unit 303, the notch 314 of the primary support unit 303 is stopped by the protrusion 306 of the secondary support unit 302, the lower pin 321 of the second linkage body 317 is pushed into the secondary support unit 302 due to the stopper block 313 of the primary support unit 303, the upper pin 323 of the second linkage body 317 is ejected from the bayonet 304 of the final support unit 301, the end surface of the final support unit 301 connected to the first spring pin 307 of the secondary support unit 302 is arc-shaped, the arc-shape can be pushed out, the first spring pin 307 is ejected from the first pin hole 310 of the secondary support unit 302, the primary support unit is retracted inward with respect to the final support unit 301 together with the secondary support unit 302 (as shown in fig. 13), the stopper block 313 of the secondary support unit 302 slides in the slide groove 305 of the final support unit 301, as the stopper 313 slides, the upper pin 318 of the first interlocking body 316 protrudes from the secondary supporting unit 302, the lower pin 320 with the first interlocking body 316 protrudes and is caught in the first pin hole 310 of the primary supporting unit 303, so that the secondary support unit 302 and the primary support unit 303 are fixedly coupled together, when the secondary support unit 302 is fully retracted with the primary support unit 303, the stopper 313 of the secondary support unit 302 is stopped by the rear end of the slide groove 305 of the final stage support unit 301, the notch 314 of the secondary support unit 302 is stopped by the projection 306 of the final stage support unit 301, the first spring pin 307 of the final stage support unit 301 is inserted into the second pin hole 311 of the secondary support unit 302, the third spring pin 309 is inserted into the third latch hole 312 of the secondary support unit 302, and at this time, the flexible display panel 200 and the multi-stage compensation mechanism 400 are accordingly returned to the housing 100 by the same return distance as the multi-stage support mechanism 300.

When the number of the secondary support units 302 is plural, the interlocking relationship between the final support unit 301 and the secondary support unit 302 and the interlocking relationship between the secondary support unit 302 and the primary support unit 303 do not change, and the plural secondary support units 302 are sequentially arranged as the 1 st stage and the 2 nd stage … … nth stage in the light outgoing direction, the 1 st stage support unit is a support unit adjacent to the primary support unit 303, and the nth stage support unit is a support unit adjacent to the final support unit 301.

When a user needs to view a larger screen, the area of the flattening portion 201 of the flexible display panel 200 is enlarged by pulling the housing 100 to expand the screen, all the secondary support units 302 and the primary support units 303 are first protruded outward with respect to the final stage support unit 301, in the protrusion process, since the end surface of the final stage support unit 301 where the first spring pin 307 and the third spring pin 309 are connected to the nth stage support unit is arc-shaped, the lower plug 320 of the nth stage support unit where the first interlocking body 316 connected to the N-1 th stage support unit is cylindrical, the lower plug 320 of the 1 st stage support unit where the first interlocking body 316 connected to the primary support unit 303 is cylindrical, the arc can be pushed out and the cylindrical shape can only be caught, so the first spring pin 307 is withdrawn from the second plug hole 311 of the nth stage support unit, the third spring pin 309 is withdrawn from the third plug 312 of the nth stage support unit, so that all the secondary support units 302 and the primary support units 303 are extended together. When the nth-order secondary support unit is extended to the maximum distance, the stop block 313 of the nth-order secondary support unit is stopped by the front end of the sliding groove 305 of the final-order support unit 301, the first spring pin 307 is extended and clamped into the second pin hole 311 of the nth-order secondary support unit, the upper pin 318 of the first linkage body 316 is pushed by the front end of the sliding groove 305 of the final-order support unit 301, the lower pin 320 of the first linkage body 316 is separated from the first pin hole 310 of the nth-1-order secondary support unit, since the end surface of the second spring pin 308 of the nth-order secondary support unit connected with the nth-1-order secondary support unit is arc-shaped, the arc can be extruded, the second spring pin 308 is withdrawn from the second pin hole 311 of the nth-1-order secondary support unit, the nth-1-order secondary support unit can drive other secondary support units 302 and the primary support unit 303 to extend outwards relative to the nth-order secondary support unit and the final-order support unit 301, at this time, the lower pin 321 of the second linkage body 317 protrudes from the inside of the nth-1 st-order support unit due to the separation of the stopper 313 of the nth-1 st-order support unit, the upper plug 323 of the second linkage body 317 is protruded and inserted into the bayonet 304 of the final-stage support unit 301 in conjunction therewith, so that the nth-order support unit is fixed together with the final-stage support unit 301, at this time, the stopper 313 of the nth-1 st-order support unit moves in the slide groove 305 of the nth-order support unit until being stopped by the front end of the slide groove 305 of the nth-order support unit, and the second spring pin 308 of the nth-order support unit is inserted into the first pin hole 310 of the nth-1 st-order support unit. Repeating the above-described linkage process N-1 times, all the secondary support units 302 can be fully extended. When the 1 st-level secondary support unit extends to the maximum distance, the stop block 313 of the 1 st-level secondary support unit is stopped by the front end of the slide groove 305 of the 2 nd-level support unit, the second spring pin 308 of the 2 nd-level secondary support unit extends and is clamped into the second pin hole 311 of the 1 st-level secondary support unit, the upper pin 318 of the first linkage body 316 is pushed by the front end of the slide groove 305 of the 2 nd-level secondary support unit, the lower pin 320 of the first linkage body 316 is separated from the first pin hole 310 of the primary support unit 303, the arc can be extruded due to the arc-shaped end surface of the second spring pin 308 of the 1 st-level secondary support unit connecting the primary support unit 303, the second spring pin 308 exits from the second pin hole 311 of the primary support unit 303, the primary support unit 303 can extend outwards relative to all the secondary support units 302 and the final support unit 301, and the lower pin 317 of the second linkage can extend outwards due to the exit of the stop block 313 of the primary support unit 303 The inside of the 1 st-order sub-support unit is protruded, the upper plug 323 accompanied with the second coupling body 317 is protruded and inserted into the bayonet 304 of the 2 nd-order sub-support unit, so that the 1 st-order sub-support unit is fixed together with the 2 nd-order sub-support unit, at this time, the stopper 313 of the first-order support unit 303 moves in the slide groove 305 of the 1 st-order sub-support unit until being stopped by the front end of the slide groove 305 of the 1 st-order sub-support unit, and the second spring pin 308 of the 1 st-order sub-support unit is inserted into the first pin hole 310 of the first-order support unit 303. At this time, the flexible display panel 200 and the multi-stage compensation mechanism 400 are correspondingly pulled out from the housing 100 by the same pulling distance as the multi-stage support mechanism, and the stepped difference formed between the adjacent support units is compensated by the multi-stage compensation mechanism 400 protruding from the housing 100.

The area of the flattened portion 201 of the flexible display panel 200 is reduced by pulling the housing 100 to restore the screen size when the user is not looking any more, the first-stage support unit 303 is first retracted inward with respect to all the secondary support units 302 and the final-stage support unit 301, the arc can be pushed out since the end surface of the 1 st-stage secondary support unit connecting the second spring pins 308 of the first-stage support unit 303 is arc-shaped, the second spring pins 308 are withdrawn from the first pin holes 310 of the first-stage support unit 303, so that the first-stage support unit 303 can be pushed, the final-stage support unit 301 and all the secondary support units 302 do not move together with the first-stage support unit 303 since the final-stage support unit 301 and all the secondary support units 302 are fixedly connected together, the stopper block 313 of the first-stage support unit 303 slides in the chute 305 of the 1 st-stage secondary support unit until being stopped by the rear end portion of the chute 305 of the 1 st-stage secondary support unit, when the primary support unit 303 is completely retracted, the second spring pin 308 of the 1 st secondary support unit is extended and snapped into the second pin hole 311 of the primary support unit 303, the notch 314 of the primary support unit 303 is stopped by the protrusion 306 of the 1 st secondary support unit, the lower pin 321 of the second linkage body 317 is pushed into the 1 st secondary support unit due to the stop block 313 of the primary support unit 303, the upper pin 323 of the second linkage body 317 is withdrawn from the bayonet 304 of the 2 nd secondary support unit, the end surface of the 2 nd secondary support unit connecting the first spring pin 307 of the 1 st secondary support unit is arc-shaped, the arc can be extruded, the first spring pin 307 is withdrawn from the first pin hole 310 of the 1 st secondary support unit, the primary support unit 303 is retracted inward with the 1 st secondary support unit with respect to the 2 nd secondary support unit, the stop block 313 of the 1 st secondary support unit slides in the slide groove 305 of the 2 nd secondary support unit, as the stopper 313 slides, the upper pin 318 of the first interlocking body 316 protrudes from the 1 st-order supporting unit, the lower pin 320 accompanying the first interlocking body 316 protrudes and is snapped into the first pin hole 310 of the first-order supporting unit 303, so that the 1 st-order supporting unit and the first-order supporting unit 303 are fixedly coupled together, and when the 1 st-order supporting unit is fully retracted with the first-order supporting unit 303, the stopper 313 of the 1 st-order supporting unit is stopped by the rear end of the slide groove 305 of the 2 nd-order supporting unit, the notch 314 of the 1 st-order supporting unit is stopped by the protrusion 306 of the 1 st-order supporting unit, and the first spring pin 307 of the 1 st-order supporting unit is inserted into the second pin hole 311 of the 1 st-order supporting unit. Repeating the above-described linkage process N-1 times, all the secondary support units 302 can be fully retracted. When the nth-order secondary support unit starts to be inwardly retracted, the stopper 313 of the nth-order secondary support unit slides in the slide groove 305 of the final-order support unit 301, the upper pin 318 of the first interlocking body 316 protrudes from the nth-order secondary support unit along with the sliding of the stopper 313, the lower pin 320 of the first interlocking body 316 protrudes and is inserted into the first pin hole 310 of the N-1 th-order secondary support unit, so that the nth-order secondary support unit and the N-1 th-order secondary support unit are fixedly coupled together, and when the nth-order secondary support unit fully retracts with the other secondary support units 302 and the first-order support unit 303, the stopper 313 of the nth-order secondary support unit is stopped by the rear end of the slide groove 305 of the final-order support unit 301, the notch 314 of the nth-order secondary support unit is stopped by the protrusion 306 of the final-order support unit 301, the first final-order spring pin 307 of the support unit 301 is inserted into the second pin hole 311 of the nth-order secondary support unit 301, the third spring pin 309 is inserted into the third latch hole 312 of the nth-order secondary support unit. The flexible display panel 200 and the multi-stage compensation mechanism 400 are then correspondingly returned to the housing 100 by the same retraction distance as the multi-stage support mechanism.

The curling screen display device of the embodiment 1 adopts the above-mentioned linkage mode of sequentially stretching out and drawing back step by step, can provide convenient operation, better experience for users, and has a simple structure, and is beneficial to manufacturing.

Example 2

Embodiment 2 of the present application discloses a display device with a curled screen, which is the same as the display device with the curled screen disclosed in embodiment 1, and can meet the requirements that a user can unfold to watch when he wants to use, can store when he does not want to use, and can select the size of the screen to watch according to his own requirements, and in addition, can overcome the problem that the prior art can not solve and the wireless charging technology is compatible and the problem that the pressing of the touch screen is affected by the stretching of the curled screen.

The structure of the display device of the present embodiment 2 is substantially the same as that of the display device of the present embodiment 1, except that the linkage device disposed between the plurality of supporting units is different.

The following describes in detail the principle of the multi-stage support mechanism 300 implementing sequential telescopic linkage step by step in the display device of the roll screen of the present embodiment 2, and in the multi-stage support mechanism 300 of the present embodiment 2, the principle of the multi-stage linkage sequential telescopic linkage step by step is consistent regardless of the number of the secondary support units 302, and the following first takes the number of the secondary support units 302 as one, that is, the multi-stage support mechanism 300 includes one final support unit 301, one secondary support unit 302 and one primary support unit 303.

Referring to fig. 16 to 22, unlike the roll screen display device of embodiment 1, in the roll screen display device of embodiment 2, the last stage support unit 301 has no bayonet 304 and no projection 306, the secondary stage support unit 302 has no stop block 313, no bayonet 304, no projection 306, no notch 314, no second spring pin 308, and no second pin hole 311, the first linkage body 316 and the second linkage body 317 in the linkage mechanism 315 are not connected to each other and are disposed at different positions of the secondary stage support unit 302, and the primary stage support unit 303 has no stop block 313, no notch 314, and no second pin hole 311. The roll screen display device of example 2 has fewer parts and a simpler structure than the roll screen display device of example 1, but the roll screen display device of example 2 has a slightly less stable structure in the first state and the second state than the roll screen display device of example 1.

Specifically, in the final stage support unit 301, a slide groove 305 is provided on a surface close to the secondary support unit 302, and a first spring pin 307 and a third spring pin 309 are provided in the final stage support unit 301. In the first direction (i.e., the extending direction of the support unit), the first spring pin 307 is disposed in front of the slide groove 305, and the third spring pin 309 is disposed behind the slide groove 305. The first spring pin 307 and the third spring pin 309 are connected in the final stage support unit 301 by elastic members. First spring pin 307 has a flat surface 324 and an arcuate surface 325, arcuate surface 325 being located forward of flat surface 324 in a first direction, and first latch hole 310 forcing first spring pin 307 into final stage support unit 301 through arcuate surface 325 when final stage support unit 301 is moved from the extended position to the retracted position.

In the secondary supporting unit 302, a slope 326, a first latch hole 310, a third latch hole 312, and a link mechanism 315 are provided on a surface close to the final stage supporting unit 301, a slide groove 305 is provided on a surface close to the primary supporting unit 303, and the link mechanism 315 is provided in the secondary supporting unit 302. In the first direction, the inclined surface 326 is located at the rear end of the secondary support unit 302, the first latch hole 310 is located between the front end and the rear end of the slide groove 305, and the third latch hole 312 is located behind the slide groove 305. The linkage 315 may be a lever structure or a screw structure, and includes a first linkage 316 and a second linkage 317, the first linkage 316 and the second linkage 317 are respectively disposed at different positions of the secondary support unit 302, the first linkage 316 is disposed between the front end portion and the rear end portion of the chute 305 and near the rear end portion, and the second linkage 317 is disposed in front of the chute 305. The first linkage body 316 includes a first pin 327, a first link 319, and a first plug 328, the second linkage body 317 includes a second pin 329, a second link 322, and a second plug 330, the first link 319 has a first upper end 331 near the final stage support unit 301 and a first lower end 332 near the primary stage support unit 303, the second link 322 has a second upper end 333 near the final stage support unit 301 and a second lower end 334 near the primary stage support unit 303; in the first direction, the first upper end 331 is located rearward of the first lower end 332, and the second upper end 333 is located forward of the second lower end 334; a first pin 327 is connected to the first upper end 331, a first plug 328 is connected to the lower end, a second pin 329 is connected to the second upper end 333, and a second plug 330 is connected to the second lower end 334; when the first interlocking body 316 is extended, the first pin 327 is extended and positioned between the front end portion and the rear end portion of the slide groove 305, and the first plug 328 is extended and caught in the first plug hole 310; when the second interlocking body 317 is extended, the second pin 329 is extended and positioned in front of the slide groove 305, and the second plug 330 is extended and caught in the first pin hole 310.

In the primary supporting unit 303, a surface close to the final stage supporting unit 301 is provided with a slope 326 and a first latch hole 310. In the first direction, the slope 326 is located at the rear end of the secondary support unit 302, and the first latch hole 310 is disposed at a position close to the rear end of the primary support unit 303.

When the roll screen display device is in the first state, the first spring pin 307 is retracted into the primary support unit 303, the third spring pin 309 is extended and caught in the third latch hole 312, the first coupling body 316 of the secondary support unit 302 is extended and caught in the first latch hole 310 of the adjacent secondary support unit 302 or primary support unit 303, and the second coupling body 317 of the secondary support unit 302 is retracted into the secondary support unit 302.

When the roll screen display apparatus is in the second state, the first spring pin 307 protrudes and is caught in the first latch hole 310 of the secondary support unit 302 adjacent to the final stage support unit 301, and the second interlocking body 317 of the secondary support unit 302 protrudes and is caught in the first latch hole 310 of the adjacent secondary support unit 302 or primary support unit 303.

In the display device of the curled screen in the embodiment 2, the multi-stage supporting mechanism 300, the multi-stage compensation mechanism 400 and the flexible display panel 200 jointly realize the linkage telescopic function, a plurality of supporting units of the multi-stage supporting mechanism 300 sequentially extend step by step, the next supporting unit 303 extends after the first supporting unit 303 extends completely, the supporting unit extending last retracts first when retracting, and therefore the first-in and second-out functions of the supporting units are realized. The final stage supporting unit 301 is stationary throughout the sequential stepwise extension and retraction of the multi-stage supporting mechanism 300.

When a user needs to view a larger screen, the area of the flattened portion 201 of the flexible display panel 200 is enlarged by pulling the housing 100 to expand the screen, the secondary support unit 302 and the primary support unit 303 are first extended outward relative to the final support unit 301 (as shown in fig. 21), and in the extending process, since the end surface of the final support unit 301 where the third spring pin 309 is connected to the secondary support unit 302 is arc-shaped, the first plug 328 of the secondary support unit 302 where the first interlocking body 316 of the primary support unit 303 is connected is cylindrical, and the arc-shaped can be extruded and only the cylindrical shape can be blocked, the third spring pin 309 is withdrawn from the third plug hole 312 of the secondary support unit 302, so that the secondary support unit 302 and the primary support unit 303 are extended together. When the secondary support unit 302 is extended to the maximum distance, the first spring pin 307 is extended and caught in the first latch hole 310 of the secondary support unit 302, the first latch 327 of the first interlocking body 316 is pushed in by the front end portion of the slide groove 305 of the final stage support unit 301, and the first latch 328 of the first interlocking body 316 is disengaged from the first latch hole 310 of the primary support unit 303, so that the primary support unit 303 can be extended outward (as shown in fig. 22) with respect to the secondary support unit 302 and the final stage support unit 301, at which time the secondary support unit 302 is fixed immovably together with the final stage support unit 301 due to the engagement of the flat surface 324 of the first spring pin 307 and the first latch hole 310, and at which time the primary support unit 303 is extended outward to the maximum position, the second latch 330 of the second interlocking body 317 of the secondary support unit 302 is extended and caught in the first latch hole 310 of the primary support unit 303. At this time, the flexible display panel 200 and the multi-stage compensation mechanism 400 are correspondingly pulled out from the housing 100 by the same pulling distance as the extension distance of the multi-stage support mechanism 300, and the stepped difference formed between the adjacent support units is compensated by the multi-stage compensation mechanism 400 extending from the housing 100.

When the user does not look any more, the area of the flattened portion 201 of the flexible display panel 200 is reduced by pulling the housing 100 to restore the screen size, the primary support unit 303 and the secondary support unit 302 are first retracted inward with respect to the final support unit 301 (as shown in fig. 21), the secondary support unit 302 and the primary support unit 303 can be pushed since the arc 325 of the first spring pin 307 of the final support unit 301 can be pushed out and the first spring pin 307 is withdrawn from the first pin hole 310 of the secondary support unit 302 and retracted into the final support unit 301, the secondary support unit 302 and the primary support unit 303 are fixedly connected together since the second pin 330 of the second coupling body 317 of the secondary support unit 302 is caught in the first pin hole 310 of the primary support unit 303, and the secondary support unit 302 can be retracted inward with the primary support unit 303 to the secondary support unit 302 completely when the primary support unit 303 is pushed, at this time, the slope 326 of the secondary support unit 302 pushes the third spring pin 309 into the final stage support unit 301, then the third spring pin 309 protrudes and is caught in the third pin hole 312 of the secondary support unit 302, the first pin 327 of the first linkage body 316 of the secondary support unit 302 protrudes into the space of the slide groove 305 of the final stage support unit 301, the first pin 328 of the first linkage body 316 of the secondary support unit 302 protrudes out of the secondary support unit 302, the second pin 329 of the second linkage body 317 of the secondary support unit 302 is pushed into the secondary support unit 302, the second pin 330 of the second linkage body 317 of the secondary support unit 302 is withdrawn from the first pin hole 310 of the primary support unit 303, the primary support unit 303 is inwardly retractable with respect to the secondary support unit 302 and the final stage support unit 301, the slope 326 of the primary support unit 303 pushes the first pin 328 of the first linkage body 316 into the secondary support unit 302, when the primary support unit 303 is completely retracted (as shown in fig. 20), the first pin 327 of the first interlocking body 316 protrudes from the secondary support unit 302, and the first pin 328 of the first interlocking body 316 with the secondary support unit 302 protrudes and is snapped into the first pin hole 310 of the primary support unit 303, whereby the final support unit 301, the secondary support unit 302, and the primary support unit 303 are fixedly connected together, and at this time, the flexible display panel 200 and the multistage compensation mechanism 400 are accordingly returned to the housing 100 by the same retraction distance as that of the multistage support mechanism 300.

When a user needs to view a larger screen, the area of the flattening portion 201 of the flexible display panel 200 is enlarged by pulling the housing 100 to expand the screen, the secondary support unit 302 and the primary support unit 303 are first extended outward relative to the final support unit 301, and in the extending process, since the end surface of the final support unit 301 where the third spring pin 309 is connected to the nth support unit is arc-shaped, the first plug 328 of the nth support unit where the first interlocking body 316 connected to the nth-1 support unit is cylindrical, the arc shape can be extruded and the cylindrical shape can only be blocked, the third spring pin 309 is withdrawn from the third plug hole 312 of the nth support unit, so that all the secondary support units 302 and the primary support unit 303 are extended together. When the nth-order support unit is extended to the maximum distance, the first spring pin 307 is extended and inserted into the first pin hole 310 of the nth-order support unit, the first pin 327 of the first interlocking body 316 of the nth-order support unit is pushed by the front end of the slide groove 305 of the final-stage support unit 301, the first pin 328 of the first interlocking body 316 of the nth-order support unit is detached from the first pin hole 310 of the nth-1-order support unit in conjunction with this, so the nth-1-order support unit can be extended outward with respect to the nth-order support unit and the final-stage support unit 301, at this time, the nth-order support unit is fixed together with the support unit 301 due to the engagement of the plane 324 of the first spring pin 307 and the first pin hole 310 of the nth-order support unit, at this time, the nth-1-order support unit is extended outward to the maximum position, the second plug 330 of the second coupling body 317 of the nth-order secondary support unit is protruded and caught in the first plug hole 310 of the nth-1-order secondary support unit. Repeating the above-described linkage process N-1 times, all the secondary support units 302 can be fully extended. When the 1 st-order secondary support unit is extended to the maximum distance, the first pin 327 of the first interlocking body 316 of the 1 st-order secondary support unit is pushed in by the front end of the sliding groove 305 of the 2 nd-order secondary support unit, the first pin 328 of the first interlocking body 316 of the 1 st-order secondary support unit is disengaged from the first pin hole 310 of the primary support unit 303, so that the primary support unit 303 can be extended outward relative to all the secondary support units 302 and the final support unit 301, at this time, all the secondary support units 302 are fixed together with the final support unit 301, and when the primary support unit 303 is extended outward to the maximum position, the second pin 330 of the second interlocking body 317 of the 1 st-order secondary support unit is extended and caught in the first pin hole 310 of the primary support unit 303. At this time, the flexible display panel 200 and the multi-stage compensation mechanism 400 are correspondingly pulled out from the housing 100 by the same pulling distance as the multi-stage support mechanism, and the stepped difference formed between the adjacent support units is compensated by the multi-stage compensation mechanism 400 protruding from the housing 100.

When the user does not look any more, the area of the flattened portion 201 of the flexible display panel 200 is reduced by pulling the housing 100 to restore the screen size, the first-stage support unit 303 and all the second-stage support units 302 are first retracted inward with respect to the last-stage support unit 301, all the second-stage support units 302 and the first-stage support unit 303 can be pushed since the arc 325 of the first spring pin 307 of the last-stage support unit 301 can be pushed out and the first spring pin 307 is withdrawn from the first latch hole 310 of the nth-stage support unit and retracted into the last-stage support unit 301, and all the second-stage support units 302 and the first-stage support unit 303 are fixedly connected together since the second latch 330 of the second coupling body 317 of the nth-stage support unit is caught in the first latch hole 310 of the nth-1-stage support unit, so that all the second-stage support units 302 are fully retracted inward with the first-stage support unit 303 when the first-stage support unit 303 is pushed, at this time, the slope 326 of the nth-order secondary support unit pushes the third spring pin 309 into the final-stage support unit 301 first, then the third spring pin 309 protrudes and is caught in the third latch hole 312 of the nth-order secondary support unit, the first latch 327 of the first linkage body 316 of the nth-order secondary support unit protrudes into the space of the chute 305 of the final-stage support unit 301, the first plug 328 of the first linkage body 316 of the nth-order secondary support unit protrudes out of the nth-order secondary support unit, the second latch 329 of the second linkage body 317 of the nth-order secondary support unit is pushed into the nth-order secondary support unit, the second plug 330 of the second linkage body 317 of the nth-order secondary support unit is withdrawn from the first latch hole 310 of the nth-1-order secondary support unit with the second linkage body 317 of the nth-order secondary support unit being connected, and the nth-1-order secondary support unit may be retracted inward with respect to the nth-order secondary support unit and the final-stage support unit 301, the slope 326 of the nth-1-level secondary supporting unit extrudes the first plug 328 of the first linkage body 316 of the nth-level secondary supporting unit into the nth-level secondary supporting unit, when the nth-level secondary supporting unit is completely retracted, the slope 326 of the nth-1-level secondary supporting unit firstly extrudes the first plug 328 of the first linkage body 316 of the nth-level secondary supporting unit into the nth-level secondary supporting unit, and then the first plug 328 of the first linkage body 316 of the nth-level secondary supporting unit extends out and is clamped into the first plug hole 310 of the nth-1-level secondary supporting unit. Repeating the above-described linkage process N-1 times, all the secondary support units 302 can be fully extended. When the 1 st-level secondary supporting unit is completely retracted, the inclined surface 326 of the primary supporting unit 303 firstly extrudes the first plug 328 of the first interlocking body 316 of the 1 st-level secondary supporting unit into the 1 st-level secondary supporting unit, and then the first plug 328 of the first interlocking body 316 of the 1 st-level secondary supporting unit extends out and is clamped into the first plug hole 310 of the primary supporting unit 303. Thereby, the final stage supporting unit 301, the secondary supporting unit 302, and the primary supporting unit 303 are fixedly coupled together, and at this time, the flexible display panel 200 and the multistage compensating mechanism 400 are accordingly returned to the casing 100 by the same return distance as the retraction distance of the multistage supporting mechanism.

The display device of the curled screen in the embodiment 2 adopts the above linkage mode of progressive sequential stretching, can provide convenient operation and better experience for users, has a simple structure, and is beneficial to manufacturing.

Example 3

As shown in fig. 23, embodiment 3 of the present application discloses a rolled screen display device which is different from the structure of the rolled screen display device of embodiments 1 and 2 having only one multi-stage support mechanism 300, and the rolled screen display device of embodiment 3 has two multi-stage support mechanisms 300, a first multi-stage support mechanism 300' and a second multi-stage support mechanism 300 ″. The structure in each of the multistage support mechanisms 300', 300 "may adopt the structure disclosed in embodiment 1 or embodiment 2.

Wherein the first direction of the plurality of support units in the first multi-stage support mechanism 300 'is opposite to the first direction of the plurality of support units in the second multi-stage support mechanism 300 ", and the retraction direction of the plurality of support units in the first multi-stage support mechanism 300' is opposite to the retraction direction of the plurality of support units in the second multi-stage support mechanism 300".

The display device with the curled screen in the embodiment 3 is provided with two multi-stage supporting mechanisms 300' and 300 ″, so that a user can pull the housing 100 from two sides to unfold the flat part 201 to enlarge the size of the screen, and a better viewing experience can be obtained.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A roll screen display device, comprising:

a flexible display panel having a flattened portion and a curled portion;

2. A rollable screen display device according to claim 1, further comprising a housing disposed on one side of the multi-stage support mechanism;

3. A roll screen display device according to claim 2 wherein the multi-stage support mechanism is a sleeve structure, the primary support unit and the at least one secondary support unit are nested in the final support unit, each secondary support unit is nested one after the other, and the primary support unit is nested in the secondary support unit adjacent thereto.

4. A roll screen display device according to claim 2 wherein the multi-stage support mechanism is a drawer structure, the primary support unit and the at least one secondary support unit are each received in the final support unit, each secondary support unit being received in stages in sequence, the primary support unit being received in a secondary support unit adjacent thereto.

5. A roll screen display device according to claim 2 wherein the multi-stage support mechanism is a stepped structure, with secondary support units adjacent to the final support unit being connected to the final support unit, each of the secondary support units being connected in series, with the primary support unit being connected to the secondary support unit adjacent thereto.

6. A rolled screen display device according to any one of claims 2 to 5,

sliding grooves are formed in the surface, close to the secondary supporting unit, of the last supporting unit and the surface, close to the primary supporting unit, of the secondary supporting unit;

7. A roll screen display device according to claim 6, wherein the secondary support unit has a linkage provided therein, and wherein the surface of the final support unit adjacent the secondary support unit and the surface of the secondary support unit adjacent the primary support unit have bayonets provided therein;

8. A rolled screen display device according to claim 7,

a first spring pin is arranged in the final stage supporting unit, and a second spring pin is arranged in the secondary supporting unit;

9. A roll screen display device according to claim 8, wherein the linkage comprises a first linkage body and a second linkage body, the first linkage body and the second linkage body being coaxially connected;

10. A rolled screen display device according to claim 9,

the first linkage body comprises an upper plug pin, a first connecting rod and a lower plug pin, the second linkage body comprises a lower plug pin, a second connecting rod and an upper plug pin, the first connecting rod and the second connecting rod are coaxially connected, the upper plug pin and the lower plug pin are respectively connected to two ends of the first connecting rod, and the lower plug pin and the upper plug pin are respectively connected to two ends of the second connecting rod;

11. A roll screen display device according to claim 10, wherein in the first interlocking body and the second interlocking body, both ends of the first link and both ends of the second link are respectively provided with a slide hole, and a cylinder is provided at an end of the upper pin and the lower pin near the first link and an end of the lower pin and the upper pin near the second link corresponding to the slide holes; the cylinder may slide in the slide hole when the first interlocking body or the second interlocking body is expanded and contracted.

12. A roll screen display device as claimed in claim 8 wherein the first spring pin is connected in the final support unit by a resilient member and the second spring pin is connected in the secondary support unit by a resilient member.

13. A rolled screen display device according to claim 8,

the final supporting unit also comprises a third spring pin, and a third bolt hole is formed in the secondary supporting unit adjacent to the final supporting unit;

14. A roll screen display device according to any one of claims 2 to 5, wherein a sliding groove is provided on both a surface of the final stage support unit adjacent to the secondary support unit and a surface of the secondary support unit adjacent to the primary support unit;

15. A rolled screen display device according to claim 14,

the first linkage body comprises a first bolt, a first connecting rod and a first bolt, and the second linkage body comprises a second bolt, a second connecting rod and a second bolt;

16. A roll screen display device according to claim 14, wherein the first spring pin has a flat surface and an arcuate surface, the arcuate surface being located forward of the flat surface in the first direction, the first pin hole forcing the first spring pin through the arcuate surface into the final support unit when the final support unit is moved from the extended position to the retracted position.

17. A rollable screen display device according to claim 1, wherein the number of the multi-stage support mechanisms is two, being a first multi-stage support mechanism and a second multi-stage support mechanism;

18. A roll screen display device according to claim 1 wherein a flexible circuit board is disposed on the flattened portion for inputting signals.

19. A rollable screen display device according to claim 1, wherein the multi-stage compensation mechanism employs a rollable material.