KR101722447B1 - Foldable Flexible Display Device - Google Patents

Foldable Flexible Display Device Download PDF

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Publication number
KR101722447B1
KR101722447B1 KR1020140046776A KR20140046776A KR101722447B1 KR 101722447 B1 KR101722447 B1 KR 101722447B1 KR 1020140046776 A KR1020140046776 A KR 1020140046776A KR 20140046776 A KR20140046776 A KR 20140046776A KR 101722447 B1 KR101722447 B1 KR 101722447B1
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KR
South Korea
Prior art keywords
plate
link
hinge member
formed
flexible display
Prior art date
Application number
KR1020140046776A
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Korean (ko)
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KR20150120742A (en
Inventor
송인성
Original Assignee
(주) 프렉코
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Priority to KR1020140046776A priority Critical patent/KR101722447B1/en
Publication of KR20150120742A publication Critical patent/KR20150120742A/en
Application granted granted Critical
Publication of KR101722447B1 publication Critical patent/KR101722447B1/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements

Abstract

A flexible display terminal in which a guide sheet is interlocked is disclosed. A flexible display terminal in which a guide sheet according to the present invention is interlocked includes a first plate and a second plate having a predetermined area; A hinge member disposed between the first plate and the second plate, the hinge member being composed of a plurality of link plates arranged so as to be bent, and a link pin connecting the plurality of link plates to each other; A guide sheet which is in contact with the inner surface of the hinge member and is in close contact with the inner surfaces of the first plate and the second plate on both sides; A pad attached to inner surfaces of the first plate and the second plate to be in close contact with a portion of the guide sheet; A flexible display panel attached to an outer surface of the pad, the first plate, and the second plate; A guide member formed on the first plate and the second plate, respectively; And a movable plate hinged to the hinge member and hinged to the hinge member and coupled to the guide member. The movable plate is moved backward in interlock with the folding operation of the first plate and the second plate, So that the hinge member and the guide seat are moved backward.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a foldable flexible display device,

The present invention relates to a flexible display terminal to which a guide sheet is interlocked, and more particularly, to a flexible display terminal in which a flexible display panel is folded or unfolded, and a guide sheet for preventing the flexible display panel from being lifted during folding is interlocked To a flexible display terminal.

Generally, due to the development of communication technology and the development of semiconductor and optical technology, portable terminals such as smart phones and tablet PCs, which have improved their mobile phones and enable internet access, have been enjoying explosive popularity. The living environment has been changed, leading to a revolution in science and technology.

In particular, the tablet PC has a disadvantage in that the display panel has a wide advantage, but is bulky and inconvenient to carry.

As a solution to this problem, a flexible display having flexibility has been proposed.

As a prior art related to such a foldable or unfoldable flexible display substrate, a "flexible display substrate" of a domestic patent application No. 10-2009-0030869 has been disclosed.

Flexible display means either a rollable shape or a curved or bendable design like a piece of paper.

In addition, the substrate can be understood as a thin, light (thin and light) display using a flexible, robust display that is unbreakable and, in some cases, thin and light as plastic.

On the other hand, the most basic form is that the flexible display is folded in half so that the volume can be reduced by half.

In this case, it is preferable that the flexible display can be folded in a form having a gentle curvature without folding the flexible display as if folding the paper.

The present inventor has filed a patent application entitled " Foldable flexible display device "in Korean Patent Application No. 10-2013-3347.

The hinge member includes a first plate and a second plate having a predetermined area, a hinge member connecting the first plate and the second plate, and a hinge member connecting the first plate and the second plate to the upper surface of the second plate and the hinge member. And a flexible display panel to which the flexible display panel is attached. The hinge member includes a link plate rotatably coupled to the first plate and the second plate and arranged in plural so that they can be bent; And a link pin connecting each of the plurality of arranged link plates, the plate spring having one end connected to the first plate and the other end connected to the second plate and having an elastic force, the plate spring surrounding the outer surface of the hinge member; .

The flexible display panel is mounted on the inner surface of the first plate, the second plate and the hinge member. In particular, both ends of the flexible display panel are fixed to the first plate and the second plate, respectively.

However, since the flexible display panel has both ends fixed when the first and second plates are folded, the outer circumferential surface of the portion corresponding to the hinge portion is stretched and the inner circumferential surface is contracted. As a result, the inner circumferential surface of the flexible display panel is wrinkled, And the display panel is lifted from the hinge member, thereby further causing wrinkling and tilting.

The reason for this is that when the flexible display panel is folded and folded in a state where both ends of the flexible display panel are fixed to the first plate and the second plate, a variation in length of both ends is generated.

Therefore, when the flexible display panel is folded, since both ends are fixed to the ends of the first and second plates, a force to push the bent portion of the panel backward is received. However, the hinge member corresponding to the bent portion is bent So as to be pressed.

This results in wrinkles on the folded portion of the panel.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a flexible display panel in which a hinge member is moved rearward to compensate for a length variation of both ends of a flexible display panel during a folding- And it is an object of the present invention to provide a flexible display terminal in which a guide sheet is interlocked to prevent damage to a panel by eliminating a pressing on a bending portion.

It is an object of the present invention to provide a plasma display panel comprising: a first plate and a second plate having a predetermined area; A pad attached to the inner surfaces of the first plate and the second plate, respectively; A hinge member composed of a link plate rotatably coupled to the first plate and the second plate and arranged so as to be able to bend each other, and a link pin connecting the plurality of link plates; A guide sheet supported in contact with the inner surface of the hinge member and having both sides thereof coupled to the pad, the first plate and the second plate; A flexible display panel attached to an outer surface of one side of the first plate and the second plate; A guide member formed on the outer surface of the other side of the first plate and the second plate; And a movable plate hinged to the hinge member and hinged to the hinge member and coupled to the guide member. The movable plate is moved backward in interlock with the folding operation of the first plate and the second plate, So that the hinge member and the guide sheet are moved backward.

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According to the present invention, when the shrinkage ratio of the flexible display panel, that is, both ends of the panel are folded while being fixed to the first plate and the second plate during the folding operation in which the first plate and the second plate are overlapped, The pressing force on the bent portion of the flexible display panel can be relieved by virtue of the variable effect in which the fixed distance between the first plate and the second plate and the hinge member is substantially increased by moving the hinge member outward to solve the shrinkage phenomenon So that panel damage due to wrinkles can be prevented.

1 is a perspective view illustrating a state in which a flexible display terminal in which a guide sheet according to the present invention is interlocked is opened,
FIG. 2 is a rear exploded perspective view of the flexible display terminal of FIG. 2,
FIG. 3 and FIG. 4 are exploded perspective views of a folding state of the flexible display terminal in which the guide sheet according to the present invention is interlocked;
FIG. 5 is an enlarged principal perspective view of a state in which a flexible display terminal in which a guide sheet according to the present invention is interlocked,
6 is an exploded perspective view showing a 'hinge member' of a flexible display terminal in which a guide sheet according to the present invention is interlocked;
7 is a side view showing movement of a 'guide sheet' in a folded state of a flexible display terminal in which a guide sheet according to the present invention is interlocked;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It does not mean anything.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator It should be noted that the definitions of these terms should be made on the basis of the contents throughout this specification.

1 is a perspective view showing a state in which a flexible display terminal is interlocked with a guide seat according to the present invention, FIG. 2 is an exploded bottom perspective view of the flexible display terminal of FIG. 2, and FIGS. FIG. 5 is an enlarged perspective view illustrating a state in which a flexible display terminal in which a guide sheet according to the present invention is interlocked, FIG. 6 is an enlarged perspective view of the flexible display terminal according to the present invention. FIG. 7 is a side view showing movement of a 'guide seat' in a folded state of a flexible display terminal in which a guide sheet according to the present invention is interlocked; FIG. 7 is an exploded perspective view showing a 'hinge member' of a flexible display terminal in which a guide sheet interlocks;

1 to 7, a flexible display terminal in which a guide sheet according to the present invention is interlocked includes a first plate 100 and a second plate 200 having a predetermined area; A pad (P) attached to the inner surfaces of the first plate (100) and the second plate (200), respectively; A plurality of link assemblies 2 formed to connect the first plate 100 and the second plate 200 so that they can be bent and a plurality of link assemblies 2 arranged to link the plurality of link assemblies 2, A hinge member B composed of pins 4; A guide sheet 300 which is in contact with the inner surface of the hinge member B and has both sides thereof coupled to the pad P and the first plate 100 and the second plate 200; A flexible display panel 500 attached to an outer surface of one side of the first plate 100 and the second plate 200; A guide member 640 formed on the outer surface of the other side of the first plate 100 and the second plate 200; And a movable plate 610 hinged to one end of the hinge member B and coupled to the guide member 640.

Therefore, the movable plate 610 is moved backward in conjunction with the folding operation of the first plate 100 and the second plate 200, and the hinge member B and the guide plate 6 interlock with the movable plate 610, (300) is moved backward.

The first plate 100 and the second plate 200 are formed in the shape of a quadrangle having the same shape and area and the hinge member B is connected to the first plate 100 and the second plate 200 Respectively.

Each of the first plate 100 and the second plate 200 is coupled to a housing H on the outside.

The hinge member B has a plurality of link connection structures, which will be described later.

The guide member 640 includes a flat plate 641 attached to the first plate 100 or the second plate 200 and a guide groove 642 formed on both sides of the flat plate 641, The cross-sectional shape of the guide groove 642 is formed as a "C" shape.

Therefore, the movable plate 610 can be coupled to the guide member 640 and guide the operation of sliding in the longitudinal direction.

The guide sheet 300 is a thin stainless steel plate having elasticity. The center portion of the guide sheet 300 is attached to the hinge member B and connected to the pads P with equal lengths on both sides.

That is, the guide sheet 300 is fixed to the link fixture 2 at the center of the link fixture 2 of the hinge member B by bolts T 1, and is fixed to both sides of the bolt T 1 in the longitudinal direction And a plurality of elongated holes 330 are formed opposite to each other.

The rivet pin 332 formed in the link plate 2 is inserted into the elongated hole 330 so that the rivet pin 332 can move within the length of the elongated hole 330 when the guide sheet 300 is folded do.

In addition, the other side of the guide sheet 300 is disposed on the upper surface of the pad P, and another second elongated hole 350 is formed at a portion contacting the pad P, And a bolt T2 coupled to the pad P is fastened.

That is, as will be described later, in the folding and spreading operation, the guide seat 300 is fixed to the hinge member B at its central portion, so that both side portions are moved at the same displacement amount.

When the guide sheet 300 is unfolded, the both ends of the guide sheet 300 are moved outward, so that the bolt T2 moves along the second long hole 350. The bolt T2 is fixed to the pad P and the second hole 350 is considered to be moved.

The rivet pin 332 includes a boss 333 inserted into the elongated hole 330 of the guide seat 300 and a head 335 formed at the upper end of the boss 333 and having a length greater than the elongated hole 330 And a lower end of the boss 333 is coupled to the link plate 2. The link plate 2 is formed in a shape of a letter "T".

The rivet pin 332 is coupled to the elongated hole 330 of the guide seat 300 so that the hinge member B can be kept in tight contact with the guide sheet 300 even if the guide sheet 300 is moved during the folding or stretching operation The amount of displacement is guaranteed.

Therefore, the guide sheet 300 can be maintained in a state in which it is always in close contact with the hinge member B, so that the movement of the guide sheet 300, for example, the amount of displacement in which the bent portion is pushed backward when folded, And the force transmitted to the hinge member B is transmitted to the movable plate 610 hinged to the hinge member B so that the movable plate 610 can be moved.

The movable plate 610 is formed in a substantially T-shaped plate and is formed of a straight plate portion 612 and a coupling plate portion 614 at one side thereof. The coupling plate portion 614 is connected to the hinge member B A hinge ring 616 is formed.

A guide step 617 is formed at both ends of the flat plate portion 612 and the guide step 617 is inserted into the guide groove 642 of the guide member 640 so as to be slid.

The hinge member B acts in conjunction with the folding or unfolding operation of the first and second plates 100 and 200. In order to protect the flexible display substrate from damage, the hinge member B has a gentle curvature To be guided in a bent shape.

The hinge member B includes a link fixture 2 rotatably coupled to the first and second plates 100 and 200 and arranged so as to be able to be bent with respect to each other; And a link pin (4) for connecting the link plates (2) arranged in a plurality, respectively, and one end of the link pin (4) is connected to the first plate (100) while the outer surface of the hinge member And a plate spring 6 connected to the plate spring 200 and having an elastic force.

The link fixture 2 has a first step 21 formed at one side to be engaged with the link pin 4, a second step 22 formed at a distance from the first step 21, And an engaging groove 25 formed between the step 21 and the second step 22 and a protruding portion 26 formed on the opposite side of the engaging groove 25 (see FIG. 6).

The link plate 2 has an inclined portion 27 formed at an upper side and a lower side of the link plate 2 at predetermined inclination angles and a planar portion 28 at the end. As shown in Fig.

The link pin 4 is coupled to rotate the two link assemblies 2 and 2 'so as to rotate. The link pin 4 includes a first step 21 and a second step 22 of the link assemblies 2, 2 'through the protrusions 26 thereof.

The coupling groove 25 is provided with a supporter 42 and a spring 44 which are coupled to the link pin 4.

Therefore, the coupling state between the link bodies (2, 2 ') can be resiliently maintained.

The end of the link pin (4) is engaged with a finishing ring (29) to prevent the link pin (4) from coming off.

The plate spring 6 includes first and second plate portions 61 and 62 connected to the first plate 100 and the second plate 200 and connected to the first and second plate portions 61 and 62 And a bent portion 63 mounted on the outer surface of the hinge member B.

The bent portion 63 is formed by connecting a plurality of mounting surfaces 632 corresponding to the link plate 2 and the link pin 4 of the hinge member B so that each mounting surface 632 is easily bent A fold line 633 is formed in the width direction.

The bent portions 63 are formed by welding or bolting each of the mounting surfaces 632 to the first upper step portion 21 of the link plate 2 and the second upper step portion 43 of the link pin 4, As shown in Fig.

Hereinafter, the operation of the present invention will be described.

As shown in FIG. 1, when the flexible display device according to the present invention is unfolded, it becomes a flat plate. As shown in FIG. 4, when folded, the hinge member B is folded into an arc.

When the first plate 100 and the second plate 200 are folded, the movable plate 610 is moved toward the hinge member B.

However, in the folded state, the bent portion of the flexible display panel 500 pushes the guide sheet 300, so that the bent portion of the guide sheet also moves outward at minute intervals.

The displacement amount of the guide sheet 300 can be ensured by the elongated hole 330 and the second elongated hole 350.

The bent portion of the guide sheet 300 pushes the hinge member B outwardly.

That is, since the intermediate portion between the hinge member B and the guide sheet 300 is integrally connected, the intermediate portion of the guide sheet 300 is bent, so that the curvature of the guide sheet 300, (B) at fine intervals.

Accordingly, the movable plate 610 connected to the hinge member B moves, and the movable plate 610 moves toward the hinge member B as described above.

Since the bent portions of the hinge member B and the guide sheet 300 can be moved finely at regular intervals, it is possible to eliminate the pressing on the bent portion of the flexible display panel 500, It is possible to prevent the occurrence.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

2: link body 4: link pin
100: first plate 200: second plate
300: guide sheet P; pad
330; Slot 332: Rivet pin
500: Flexible display panel 610: movable plate
640: guide member

Claims (9)

  1. A first plate 100 and a second plate 200 having a predetermined area;
    A pad (P) attached to the inner surfaces of the first plate (100) and the second plate (200), respectively;
    A link fixture 2 rotatably coupled to the first and second plates 100 and 200 so as to be capable of bending and a link pin 4 connecting the link fixtures 2 arranged in a plurality );
    A guide sheet 300 which is in contact with the inner surface of the hinge member B and has both sides thereof coupled to the pad P and the first plate 100 and the second plate 200;
    A flexible display panel 500 attached to an outer surface of one side of the first plate 100 and the second plate 200;
    A guide member 640 formed on the outer surface of the other side of the first plate 100 and the second plate 200;
    And a movable plate 610 hinged to one end of the hinge member B and coupled to the guide member 640,
    The movable plate 610 is moved backward in conjunction with the folding operation of the first plate 100 and the second plate 200,
    And the hinge member (B) and the guide sheet (300) are moved backward by interlocking with the movable plate (610).
  2. The method according to claim 1,
    The guide sheet (300)
    Is fixed to the link fixture 2 at the center of the link plate 2 of the hinge member B by a bolt T1 and is fixed to both sides of the bolt T1 in the longitudinal direction with the long holes 330 facing each other Lt; / RTI >
    And a rivet pin (332) formed on the link plate (2) is inserted into the elongated hole (330).
  3. 3. The method of claim 2,
    The rivet pin 332 includes a boss 333 inserted into the elongated hole 330 of the guide seat 300 and a head 335 formed at the upper end of the boss 333 and larger than the elongated hole 330 And the lower end of the boss (333) is coupled to the link plate (2).
  4. The method according to claim 1,
    A leaf spring 6 which surrounds the outer surface of the hinge member B and has one end connected to the first plate 100 and the other end connected to the second plate 200 and having an elastic force;
    And a flexible display device.
  5. The method according to claim 1,
    The link plate (2)
    A first step 21 formed at one side for coupling the link pin 4,
    A second step 22 formed at a predetermined distance from the first step 21,
    And an engaging groove (25) formed between the first step (21) and the second step (22)
    A protruding protrusion 26 is formed on the opposite side of the engaging groove 25,
    On the inner side surface, inclined portions 27 each having a predetermined inclination angle are formed on the upper and lower portions,
    A flat portion 28 is formed at an end thereof,
    And a plate spring (6) is mounted in close contact with the flat surface portion (28).
  6. delete
  7. 6. The method of claim 5,
    The link pin 4 is coupled to rotate the two link assemblies 2, 2 '
    Is coupled through the first step (21) and the second step (22) of the link body (2) and the projecting part (26) of the other link body (2 ').
  8. 5. The method of claim 4,
    The leaf spring (6)
    First and second plate portions 61 and 62 respectively connected to the first plate 100 and the second plate 200,
    And a bending portion (63) connected to the first and second plate portions (61, 62) and corresponding to an outer surface of the link plate (2) and the link pin (4) of the hinge member (B) Display device.
  9. 9. The method of claim 8,
    The bent portion 63 is formed by connecting a plurality of mounting surfaces 632 mounted on the link plate 2 and the link pin 4 of the hinge member B,
    And each of the mounting surfaces (632) is formed with a fold line (633) in the width direction so as to be easily bent.
KR1020140046776A 2014-04-18 2014-04-18 Foldable Flexible Display Device KR101722447B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140046776A KR101722447B1 (en) 2014-04-18 2014-04-18 Foldable Flexible Display Device

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Application Number Priority Date Filing Date Title
KR1020140046776A KR101722447B1 (en) 2014-04-18 2014-04-18 Foldable Flexible Display Device

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KR101722447B1 true KR101722447B1 (en) 2017-04-04

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105430132B (en) * 2015-12-29 2017-11-17 广东欧珀移动通信有限公司 A kind of collapsible terminal
WO2017142258A2 (en) * 2016-02-15 2017-08-24 박현민 Hinge structure for mobile communication device provided with flexible display panel
WO2018070759A1 (en) * 2016-10-11 2018-04-19 박현민 Hinge structure, for foldable display device, having semi-automatic operating portion
WO2019190213A1 (en) * 2018-03-28 2019-10-03 (주)오라컴디스플레이 Infolding-type hinge structure having flexible display panel installed therein
KR101956481B1 (en) * 2017-12-11 2019-03-08 김돈수 Protective Cases for Foldable Mobile Phones

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3169371B2 (en) 1990-06-04 2001-05-21 ソニー株式会社 Planar array antenna
US20130342090A1 (en) 2012-06-26 2013-12-26 Sung-Sang Ahn Flexible display device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110100936A (en) * 2010-03-05 2011-09-15 삼성전자주식회사 Portable terminal with flexible display element
TWM388820U (en) * 2010-05-21 2010-09-11 Shin Zu Shing Co Ltd Hinge suit and its cover-lifting device thereof
KR101346146B1 (en) * 2011-12-23 2013-12-31 주식회사 세네카 Hinge Module for Flexible Display Device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3169371B2 (en) 1990-06-04 2001-05-21 ソニー株式会社 Planar array antenna
US20130342090A1 (en) 2012-06-26 2013-12-26 Sung-Sang Ahn Flexible display device

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