KR20150007274A - Flexible display apparatus with the torque generating method of roller by the folding or unfolding operation power - Google Patents

Abstract

The present invention relates to a flexible display device capable of controlling the size of an image display area easily and increasing and maximizing a commercial value by increasing portability. The flexible display device comprises; a fixing body which fixates a predetermined area of a flexible panel; and the flexible panel which is partially fixated on the fixing body. The residual portion of the flexible panel which is not fixated is feely bent. The flexible display device comprises; a protection cover which winds up the residual portion of the flexible panel by using a roller which is assembled in the inner side to be able to rotate or change the direction of the residual portion of the flexible panel to receive and protect the residual portion; and an operation power conversion device which is assembled and applied to connect the fixing body and the protection cover and rotates the roller by mechanically converting operation power added to the protection cover by a user for unfolding of the flexible display device. The operation power conversion device converts perturbation movement of the protection cover into rotational force by using a screw principle inversely. For this, a rotary conversion screw wherein a screw is formed on a central penetration portion can be applied. A rotary screw which is screw-combined to the rotary conversion screw to be able to rotate and is assembled and applied can be applied. A gear 1 is formed on the end of the rotary screw.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible display apparatus having a roller that rotates by the action of a user's unfolding operation force,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a display device, and more particularly, to a display device that protects a bent portion of a flexible display device having a curved surface from bending or pressing, To a flexible display device to which a rotating roller is applied by a rotational force generated through an apparatus.

The display device occupies an important part in an electronic device including a video device and a communication device. Currently, a flexible display device has been introduced, and research and development of a flexible display device in which a flexible display device is wound or folded in a cylinder shape A driving force generating method of a roller that performs a function of winding and folding a flexible panel, which is a main component, and a method of adjusting a roller rotational speed by advancing the degree of spreading are not presented.

[Prior Art Literature]

Open Patent Publication No. 10-2010-0027502 (Mar.

Open Patent Publication No. 2012-0079493 (Jul. 13, 2012)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a flexible display device and a flexible display device in which a roller is rotated by a rotational force generated mechanically through an operation force conversion device provided in a flexible display device, Device.

Another object of the present invention is to provide a flexible display device in which the rotational speed of the rollers is synchronized with a spreading or folding speed when a user applies a spreading or folding operation force of the flexible display device and the tension is automatically maintained constantly at any time without damaging the flexible panel .

According to an aspect of the present invention, there is provided a flexible panel, including: a flexible panel A capable of bending and performing a screen display function; a fixed body having a part of the flexible panel A fixedly supported; A roller A that is supported by the fixing body and rotatably supported by the roller A, rotatably supported inside the roller body, and protects the inside of the flexible panel portion A A cover A and an operation force converting device for mechanically converting the unfolding or folding operation force of the user applied to the flexible display device to apply a rotational force to the roller A. [

According to another embodiment of the present invention, there is provided a flexible panel B in which a plurality of feed through holes for feeding a panel are formed in a straight line, A roller B in which a sprocket-shaped transfer protrusion continuously hooked to the feed through hole is formed on the outer circumferential surface of the circumferential surface at one end and gears for transmitting rotational force are formed at an arbitrary intermediate portion, A protective cover B supported peripherally by the fixed body and rotatably assembled in the roller B so as to protect the portion of the flexible panel B which has been turned by the roller B therein, The operation force conversion that mechanically converts the collapsing operation force and applies a rotational force to the roller B It may contain values.

The operation force conversion device includes a rotation switching screw having a through hole formed with a protrusion capable of performing a screw thread function or a rotational force conversion function and fixed to one side of the fixing body and a screw thread or a screw thread function formed on the rotation switching screw A thread corresponding to a protruding portion that can be engaged with the protective cover A is formed on a circumferential surface extending over a certain range from one end located on the fixed body side to the protective cover A side or the protective cover B side, And a rotary screw having a gear 1 for transmitting a rotational force to the gear of the roller A or the gear of the roller B may be provided at an end located on the protective cover B side.

As described above, according to the embodiment of the present invention,

The flexible display device has advantages such as space saving, cost reduction, and prolongation of the battery consumption time since the roller A or the roller B can be driven by the operation force conversion device itself without a motor and a motor control part during a user's spreading operation.

Further, since the operation force converting device is mechanically synchronized with the rotation speed of the user in accordance with the user's spreading speed of the flexible display device, the tilting of the flexible panel A or the flexible panel B due to excessive rotation of the roller Or the deflection of the flexible panel A or the flexible panel B due to insufficient rotation of the roller can be prevented.

Fig. 1 is an exemplary view showing a tearing or fraying of the flexible panel which can be generated in a spreading operation of a flexible display device to which a flexible panel that is wrapped or deflected by a roller is protected,
2 is a perspective view, a plan view, and a cross-sectional view of a flexible display device to which the flexible panel A, the fixed body, the roller A, the protective cover A, and the operation force conversion device according to the embodiment of the present invention are applied,
Fig. 3 is an exploded perspective view of the flexible display device shown in Fig. 2,
Fig. 4 is a conceptual view showing the principle of rotation of the roller A applied to Fig. 2,
FIG. 5 is a perspective view of a fixed body, a protective cover upper plate A and a protective cover lower plate A in which shapes for application of the operation force converting apparatus shown in FIG. 2 are reflected,
6 is a perspective view, a plan view, and a cross-sectional view of a flexible display device to which a flexible panel B, a fixed body, a roller B, a protective cover B, and an operation force conversion device according to another embodiment of the present invention are applied,
Fig. 7 is an exploded perspective view of the flexible display device shown in Fig. 6,
FIG. 8 is a conceptual view showing the principle of rotation of the roller B applied to FIG. 6,
FIG. 9 is a perspective view of a fixed body, a protective cover upper plate B and a protective cover lower plate B in which shapes for application of the operation force converting apparatus shown in FIG. 6 are reflected.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Brief Description of the Drawings The advantages and features of the present invention, and the manner of implementing it, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in different forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the concept of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is to be understood that the phrase "comprises" and / or "comprising" used in the specification exclude the presence or addition of one or more other elements, steps, operations and / or elements, I never do that. In addition, since they are in accordance with the preferred embodiment, the reference numerals shown in the order of description are not necessarily limited to the order.

Fig. 1 is an exemplary view showing a tearing or fraying of the flexible panel, which may occur during a spreading operation of a flexible display device to which a flexible panel is wound and deflected by being wound or turned by a roller.

As for the methods presented so far in the flexible display device, a motor driving method or a manual winding driving method is considered as a driving method of the roller.

The motor drive method can perform precise drive control through electrical control based on sensor sensing, but also considerations such as application space securing, rotational torque securing, manufacturing cost, and battery consumption are also generated.

Although the manual winding drive method can not perform precise drive control as compared with the motor drive method, it does not have to consider the manufacturing cost and the problem of the battery consumption. However, the torque reduction problem such as inaccurate drive control and accumulation of the spring tension Should be considered.

As shown in FIG. 1, in both the motor driving method and the manual winding driving method, the rotation and rotation speed control of the roller according to the spreading progress of the flexible panel can prevent damage to the flexible panel and display a good screen .

If the rotational speed of the roller is faster than the spreading speed of the flexible panel, excessive tension may be generated in the flexible panel, thereby causing damage to the connection fixing portion between the flexible panel and the roller or the flexible panel itself .

Also, when the rotation speed of the roller is slower than the spreading speed of the flexible panel, deflection of the flexible panel occurs, thereby causing a phenomenon such as bending of the screen display surface.

The present invention has been devised so as to solve the problems of the motor driving method and the manual winding driving method and to carry out accurate driving control of the motor driving method, which is described in conjunction with Figs. 2 to 9, Lt; / RTI >

2 is a perspective view, a plan view, and a cross-sectional view of a flexible display device to which the flexible panel A, the fixed body, the roller A, the protective cover A, and the operation force conversion device are applied according to the embodiment of the present invention, Fig. 4 is a conceptual view showing the principle of rotation of the roller A applied to Fig. 2, Fig. 5 is a perspective view showing a fixed body in which shapes for application of the operation force converting apparatus shown in Fig. 2 are reflected, It is a perspective view of the lower plate A. 6 is a perspective view, a plan view, and a cross-sectional view of a flexible display device to which a flexible panel B, a fixed body, a roller B, a protective cover B, and an operation force conversion device according to another embodiment of the present invention are applied. FIG. 8 is a conceptual view showing the principle of rotation of the roller B applied to FIG. 6, FIG. 9 is a perspective view of the fixed body, the protective cover upper plate B, and the protection Is a perspective view of the lower cover plate B;

2 to 5, the flexible display device 100 according to the embodiment of the present invention includes: a flexible panel A 10a capable of bending and performing a screen display function; A fixed body 20 to which a part of the flexible panel A 10a is fixedly supported; A roller A (40a) having a portion for freely bending the flexible panel A (10a) around which a gear for transmitting rotational force is formed; A protective cover A 30a slidably supported on the fixed body 20 and assembled in a rotatable manner inside the roller A 40a to protect the flexible panel A 10a inside; And an operation force converting device 50 for mechanically converting a user's unfolding or folding operation force applied to the flexible display device 100 to apply a rotational force to the roller A 40a.

6 to 9, the flexible display device 100 according to another embodiment of the present invention is configured such that the feed through holes 11 for feeding the panel are formed in a straight line with a predetermined interval, A flexible panel B (10b) for performing a screen display function in a state of being displayed; A fixed body 20 to which a part of the flexible panel B 10b is fixedly supported; A roller B (40b) having a sprocket-shaped transfer protrusion (41) which is continuously engaged with the feed through hole (11) is formed on the outer surface of the peripheral surface at one end and a gear ); (10b) which is supported by the fixed body (20) and assembled in a rotatable manner inside the roller (B) (40b) and which is turned by the roller (B) Cover B 30b; And an operation force converting device (50) for mechanically converting a user's unfolding or folding operation force applied to the flexible display device (100) to apply a rotational force to the roller (B) (40b).

2 to 9, according to the present invention, the remaining part of the flexible panel A (10a) or the flexible panel B (10b) which is not fixed to the fixed body 20 is wound or redirected The roller A (34a) or the roller B (34b) has a function to store and protect the inside of the protective cover A (30a) or the protective cover B (30b) A new driving method to which the operation force converting device 50 is applied is applied instead of the motor driving method and the manual winding driving method described above.

As shown in FIGS. 2 to 9, the manipulation-force transducer 50 has a through-hole formed with a thread 55 or a protruding portion capable of performing a thread function, and is fixed to one side of the fixed body. (51); And a screw thread 55 formed on the rotary switching screw 51 or a screw thread 55 corresponding to a protruding portion capable of performing a screw thread function are provided on one side of the fixed body 20, (30a) or on the side of the protective cover B (30b) on the side of the protective cover B (30b) or on the side of the protective cover B (30b) And a rotary screw 52 having gears 53 for transmitting rotational force to the gears of the rollers 40a and 40b.

When the user linearly moves the protective cover A 30a or the protective cover B 30b by the user's force for the unfolding operation of the flexible display device 100, To convert the linear perturbation movement force into rotational force. In order to convert the linear perturbation movement force of the protective cover A 30a or the protective cover B 30b into rotational force, a central through hole of the rotation switching screw 51 and an outer circumferential surface of the rotary screw 52 are threaded The pitch of the threads 55 is relatively large, unlike the normal threads, so that the user can perform the spreading operation without applying a large force.

The setting of the number of revolutions of the roller A 40a or the roller B 40b due to the linear perturbation movement of the protective cover A 30a or the protective cover B 30b is performed by setting the pitch value of the thread 55, Is determined by the gear ratio of the gear 1 (53) and the roller A (40a) or the gear ratio of the gear 1 (53) and the roller B (40b), and the rotational speed is determined by the protective cover A (Unfolding speed) of the linear perturbation moving portion 30b.

The gear 1 53 is rotated in the direction of the linear motion of the protection cover A 30a or the protective cover B 30b in the direction of generating the rotational force of the operation force converter 50, Or the roller A (34a) or the roller B (34b) may be separated from the gear of the roller B (40b), which may cause the rotation screw (52) Occurs when the cover A (30a) or the protective cover B (30b) has a floating position. In order to prevent the trouble of the roller A (34a) or the roller B (34b), a position fixing jaw 54 is applied to the lower end portion of the gear 1 (53) of the rotary screw 52, The position fixing hook 54 is engaged with the inner side of the protective cover A 30a or the protective cover B 30b so as to be rotatable and always maintains a constant position.

5 and 9, in order to apply the operation force conversion device 50 to the flexible display device 100, the fixed body 20 and the protective cover A 30a or the protective cover B 30b reflect the shapes concerned.

A screw fixing part 21 formed at one side of the fixing body 20 to fix the rotation switching screw 51 and to remove a part of the fixing body 20; And a portion of the fixed body 20 for accommodating the rotary screw 52 due to perturbing folding of the protective cover A 30a or the protective cover B 30b toward the fixed body 20 side And a screw receiving portion 22 formed to be removed. When the electronic device or the battery for controlling the flexible display device is applied to the protective cover A 30a or the protective cover B 30b, the fixing body 20 and the protective cover A 30a or the protective cover B B 30b are electrically connected to each other. To this end, a connecting wire 24, which can be flexed freely, is applied to one side of the fixed body 20.

The protective cover A 30a for assembling and fixing the roller A 34a in a rotatable state includes a protective cover upper plate A 31a and a protective cover lower plate A 32a, A screw fastening portion 34 is formed on either the protective cover upper plate A 31a or the protective cover lower plate A 32a so as to be held in a rotatable state and to maintain a predetermined position.

The protective cover B 30b for assembling and fixing the roller B 34b in a rotatable state includes a protective cover upper plate B 31b, a protective cover lower plate B 32b and a protective cover side cover 33 A screw fastening portion 34 is formed on either the protective cover upper plate B 31b or the protective cover lower plate B 32b so that the position fixing hook 54 can be held in a rotatable state to maintain a predetermined position And a panel path guide 36 formed by removing the interference part for the interference-free movement of the flexible panel B 10b which is redirected.

The protective cover side cover 33 is used for easy assembly and for taking in and taking out the contents in an extra utilization space that can be provided in the roller B (40b).

There is a possibility that the protective cover A (30a) or the protective cover B (30b) can be separated from the fixed body (20) when the flexible display device (100) In order to prevent separation and separation of the protective cover A 30a or the protective cover B 30b, one end is assembled and supported on the fixed body 20 so as to be movable in a state in which the stopper is formed, A guide perimeter pin 60 fixed to one side of the protective cover A 30a or the protective cover B 30b is applied. When the movable cover 20a is moved toward the fixed body 20 side of the protective cover A 30a or the protective cover B 30b, the fixed body 20 ) Includes a perforated pin receiving portion (23) formed by removing a part of the fixed body (20).

The flexible display device to which the motor driving method is applied includes various sensors applied as sensing elements for motor control, so that the flexible display device can be adapted to a suitable display mode by detecting the degree of spreading of the flexible panel.

However, since the sensors for driving the roller A (34a) or the roller B (34b) are not applied to the flexible display device 100 to which the operation force conversion device 50 is applied, a separate sensor including a limit switch The flexible display device 100 can not perform the display mode change suitable for the extended state.

Therefore, even in the flexible display device 100 to which the operation force conversion device 50 is applied, the fixing body 20 or the protective cover A 30a or the protection The application of the distance sensor 60 for detecting the degree of spread may be included in either one of the cover B 30b and the application position and the types of applicable sensors may vary.

In the above-described embodiments, the protective cover A 30a or the protective cover B 30b is applied to only one direction of the fixed body 20 with respect to the fixed body 20, The concept of the flexible display device to which the conversion device is applied is also applicable to the case where the protective cover A 30a or the protective cover B 30b is applied to both sides of the fixed body 20 with respect to the fixed body 20 The basic concept of the functions and components is the same concept that can be applied without any change, so that separate description and illustration are omitted.

The rotary switching screw 51 which is fixed to the fixed body 20 as a main component of the operation force conversion device 50 includes a rotary switching screw 51, Since it is described that the fixed body 20 and the rotation switching screw 51 are separated from each other for the convenience of the description and the illustration of the flexible display device including the operation force conversion device 50, The rotary switching screw 51 and the fixed body 20 are integrally applied to the rotary shaft 20 itself.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect.

The main parts of the accompanying drawings are as follows.
10a: Flexible panel A 10b: Flexible panel B
11: feed through hole 20: fixed body
21: screw fixing portion 22: screw accommodating portion
23: Piston pin holding part 24: Connecting wire
30a: Protective cover A 30b: Protective cover B
31a: Protective cover top plate A 31b: Protective cover top plate B
32a: Protective cover bottom plate A 32b: Protective cover bottom plate B
33: Protective cover side cover 34: Screw fixing part
35: Piston pin jamming fixture 36: Panel path guide
40a: roller A 40b: roller B
41: feed projection 50: operation force conversion device
51: rotation switching screw 52: rotating screw
53: gear 1 54: position locking jaw
55: thread 60: guide peristaltic pin
70: Distance sensor (not shown) 100: Flexible display device

Claims (16)

Fixed body;
A roller including a gear;
A rotary screw having a shape in which a thread or protrusion rotates along a longitudinal direction, the gear comprising a gear; And
And a rotation switching screw fixed to one side of the fixed body and including a through hole corresponding to a cross sectional shape of the rotary screw,
Wherein the rotary screw is located through the through-hole of the rotary conversion screw,
And the gear of the rotary screw is engaged with the gear of the roller. The method according to claim 1,
Further comprising: a protective cover including a space for accommodating the roller and means for guiding a linear movement of the fixing body. The method according to claim 1,
And a transfer protrusion formed on one side of the roller in correspondence with the transfer through-holes provided at predetermined intervals in the flexible panel. The method according to claim 1,
And a protective cover including a space for accommodating the roller and a screw engagement portion for fixing the rotation screw,
And the rotation screw includes a position fixing jaw which is engaged with the screw fixing portion. The method according to claim 1,
And the rotation screw is disposed at a right angle to the roller. The method according to claim 1,
A protective cover including a space for receiving the roller; And
And a guide peripheric pin fixed to one side of the protective cover,
Wherein the fixed body includes a perforated pin receiving portion for receiving the guide perturbation pin. The method according to claim 1,
Wherein the fixed body and the rotation conversion screw are integrally formed. A roller including a gear on one side;
A rotating screw including a gear engaged with a gear of the roller;
A fixed body capable of rectilinear motion in the longitudinal direction of the rotary screw; And
And a rotation switching screw fixed to the fixed body and including a through hole corresponding to a cross-sectional shape of the rotary screw,
Wherein the rotary screw is located through the through-hole,
Wherein the through hole or the rotation screw includes a thread or a protrusion. 9. The method of claim 8,
Wherein the roller and the fixing body are connected to both ends of the flexible panel. Protective cover;
A fixed body movable in a linear direction with respect to the protective cover;
A rotation switching screw fixed to the fixed body and including a thread or protrusion;
A rotary screw having a shape in which a cross-sectional shape corresponding to the shape of the through-hole rotates in a longitudinal direction, and a gear disposed through the through-hole and rotated by linear motion of the fixed body; And
And a roller which is engaged with the gear of the rotary screw and is rotated by rotation of the gear of the rotary screw, the roller being located in the protective cover. 11. The method of claim 10,
Wherein the roller and the fixing body are connected to both ends of the flexible panel. Fixed body;
A rotation switching screw fixed to the fixed body and having a through hole formed therein with a protruding portion capable of performing a spiral rotating thread or a screw function;
A rotary screw having a helical portion inserted and assembled in such a manner that the through hole can be rotated and perturbed, and a cross-sectional shape corresponding to a projection capable of performing a screw thread or a screw function of the through hole is formed in the axial direction; And
And a roller gear-engaged with the rotary screw. A fixed body on which a rotation switching screw is formed;
A rotary screw assembled to the through-hole of the rotary conversion screw to be perturbed and accommodated inside the fixed body, and a gear for transmitting rotational force is formed at one side; And
And a roller having a gear which is gear-coupled to the gear of the rotation converting screw and rotatably disposed outside the fixing body. Top plate; And a lower plate,
Wherein the upper and lower portions of the inner film are open to allow the flexible panel to pass therethrough, wherein the upper and lower portions of the inner film are open to allow the flexible panel to pass therethrough. 15. The method of claim 14,
And a screw fastening portion formed on one side of the inner film to fasten and fix the position fixing fastener formed on one side of the rotary screw. Protective cover;
A roller formed inside the protective cover and rotated by a gear for receiving rotational force;
A rotary screw having a thread or protrusion rotated in the longitudinal direction and gear-engaged with the gear of the roller and rotating;
And a rotation switching screw including a through hole corresponding to a cross-sectional shape of the rotary screw,
Wherein the rotary screw is located through the through-hole of the rotation conversion screw.

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