KR101735470B1 - Bending and rolling demonstration device for flexible display - Google Patents

Abstract

The present invention relates to a bending and rolling demonstration apparatus for a display. The apparatus of the present invention comprises: a main frame (10); a pair of fixing posts (13, 13) installed in the main frame (10) and electrically connected to at least one side of a display (P) extending in a vertical direction to apply an electric signal thereto; a pair of moving posts (20) installed between the fixing posts (13, 13) and being able to linearly move along the fixing posts (13, 13); a rolling assembly (30) installed in the moving posts (20) to be able to move in a direction perpendicular with respect to a moving direction of the moving posts (20), and rotating the display (P) by selectively fixing at least a part of the display to wind or unfold the display (P); and a transparent case (100) installed in the main frame (10) to surround the fixing posts (13, 13), the moving posts (20) and the display (P).

Description

Technical Field [0001] The present invention relates to a bending and rolling demonstration device for a display,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for demonstrating a display, and more particularly to a demonstration apparatus for winding a flexible display or demonstrating whether the display is operated in a folded state.

In general, a liquid crystal display (LCD), an organic light emitting diode (OLED), and an electroluminescence (EL) are one type of FPD (flat panel display), and have low power consumption, Computers, mobile phones, and the like, as well as automobiles and airplanes.

In recent years, flexible displays having flexibility have been actively developed in the industry. Such a flexible display must not only be able to bend, but also have durability and driving stability to withstand a certain degree of bending.

More precisely, the flexible display must be capable of displaying normal images in a bent or rolled state, and vice versa. As described above, the extent to which the flexible display can warp within a range in which a normal image can be displayed, i.e., the flexibility is one of the important performances of the flexible display.

Particularly, in recent years, a technology has been actively developed for a foldable display and a rollable display that can be folded like a paper in which the display can be fully folded or unfolded. Such a foldable or rolled display It is necessary to develop a device capable of demonstrating such folding and bending properties.

On the other hand, parts for driving a display, for example, a substrate or a connector for connection with the outside are also mounted on the display, and these parts often do not have a flexible characteristic unlike a display. Therefore, when emphasizing the folding and bending characteristics of a display and demonstrating it, it is important to avoid excessive bending forces on these parts.

In the conventional inspection apparatuses and demonstration apparatuses, devices for inspecting or demonstrating general displays that are long in the left and right direction, such as a TV screen, are mainly used, but in recent years, a large screen with a long vertical direction such as a digital signage is widely used There is a need for devices that can inspect and demonstrate these devices.

Korean Patent Publication No. 10-2014-0139825

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus and method for demonstrating the bending characteristics of a display while folding or folding a flexible display elongated in the longitudinal direction will be.

Another object of the present invention is to prevent a bending moment from being transmitted to parts such as a substrate provided on a display in a process of winding or warping a display.

According to an aspect of the present invention, there is provided a display device including a main frame and at least one of a display mounted on the main frame and extending in a longitudinal direction, A pair of movable posts provided between the pair of fixed posts and linearly movable along the fixed posts, and a pair of movable posts which are movable in a direction perpendicular to the moving direction of the movable posts And a transparent case installed in the main frame to enclose the fixing post, the moving post, and the display. The rolling assembly includes a rolling assembly that is installed in the main frame and selectively rotates at least a part of the display to wind or unroll the display.

The fixing post is provided with connector means for engaging with and fixing the connecting means provided on the display, and the rolling assembly selectively fixes one end of the display corresponding to the opposite side of the connector means.

The rolling assembly includes a rotation driving source installed linearly along a guide slot of the movement post, a rotation unit linearly moved along the guide slot together with the rotation driving source and rotatable by a rotation driving source, And fixing means for selectively fixing the one end portion.

The fixing means includes a pair of fixing bars which are moved relative to each other to allow the display to be selectively pressed therebetween while being spaced from each other, and a fixture mobilization for relatively moving the fixing bar.

When the rolling assembly winds or unfolds the display, the moving post continuously or discontinuously moves along the movement path of the fixed frame to reduce the bending moment applied to the connecting means of the display.

The rolling assembly is linearly moved along a guide slot of a moving post formed in a direction orthogonal to a moving direction of the moving post.

Wherein the pair of fixed posts are each provided with a pair of movement driving sources respectively coupled to both ends of the movement post to provide a driving force for linear movement of the movement post, It moves linearly at a constant speed and direction.

The bending and rolling demonstration apparatus for a display according to the present invention as described above has the following effects.

The demonstration device according to the present invention allows the display to be demonstrated by automatically winding or re-extending the long flexible display in the longitudinal direction. Particularly, such a demonstration is performed in a state in which a drive signal is applied to the display, so that the advertisement and advertisement effect of the display can be more immediate and larger.

Further, the present invention allows the movable post to move linearly when the display is rolled or unfolded, so that the periphery of the connection means of the display remains unfolded. Therefore, it is possible to prevent an excessive bending moment from being applied to the connecting means, and it is possible to prevent the peripheral parts other than the display main body from being damaged during the demonstration process.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view of one embodiment of a flexible display that is demonstrated using the present invention.
2 is a perspective view showing a configuration of an embodiment of a bending and rolling demonstration apparatus for a flexible display according to the present invention.
Fig. 3 is a perspective view showing a state in which the case and one fixing post are omitted in the embodiment of Fig. 2; Fig.
4 is an enlarged view of a portion A in Fig. 3;
FIG. 5 is a perspective view showing a state in which a flexible display is rolled by using the embodiment of FIG. 2. FIG.
6 is a conceptual view showing a movement locus of a rolling assembly in an operation of rolling a flexible display using the present invention;

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be interpreted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

First, the structure and the folding condition of the flexible display (hereinafter, referred to as 'display P') will be described with reference to FIG. FIG. 1 shows a state in which the display P is fully opened. The display P is made of a flat plate, and is made of a flexible material and has a structure that can be folded.

A plurality of connecting means P1 and P2 are provided at the edges of the display P so as to be electrically connected with other parts such as a connector or a power supply part in the process of assembling the display P. For reference, the connecting means P1 and P2 have a side connecting portion P1 provided on the side surface of the display P and a lower connecting portion P2 provided on the lower or upper side.

2, a bending and rolling demonstration apparatus (hereinafter, referred to as a "demonstration apparatus") of the display P may be used to wind or warp the display P, which is a fish product, . In this state, the demonstration apparatus can obtain an advertisement and a publicity effect by demonstrating the display P by applying an electric signal to the display P.

The appearance and skeleton of the demonstration apparatus are formed by the main frame 10. 2, the main frame 10 includes a lower body (not designated) and a transparent case 100 extending to an upper portion of the lower body. Here, the transparent case 100 is made of a transparent material so that the inside of the display P can be visually observed from the outside so that the display P can be demonstrated. If the display P is a transparent display, the demonstrator can observe the display P on the back of the test apparatus as well as on the front surface. At this time, when the display P is composed of two layers, the performers located on the rear side as well as the front side of the testing apparatus may see different screens. Of course, the transparent case 100 may be separated from the lower body for installation of the display P or maintenance of the demonstration apparatus.

The main frames 10 are provided with fixing posts 13 and 13 '. The fixing posts 13 and 13 'are erected in a direction orthogonal to the main frame 10. As shown in FIG. 2, the fixing posts 13 and 13 'are spaced apart from each other and a display P is interposed between the fixing posts 13 and 13' Located. The fixing posts 13 and 13 'allow the moving posts 20, which will be described below, to move linearly. Since the fixing posts 13 and 13 'are provided in pairs in the main frame 10, the demonstration apparatus according to the present invention can sufficiently bear the load of the large display which is elongated in the longitudinal direction.

One of the pair of fixing posts (13, 13 ') is provided with a connector means (15). The connector means 15 serves to apply an electrical signal to the display P in combination with the connecting means P1 and P2 of the display P and more precisely with the lower connecting portion P2. To this end, the connector means 15 is formed with a coupling groove 16, and the lower connection portion P2 of the display P is inserted into the coupling groove 16. The connector means 15 may protrude from the fixing post 13 as shown in FIG. The connector means 15 may be viewed as a combination of a plurality of electrical connectors.

The fixing posts (13, 13 ') are provided with moving means (18). The moving means 18 is for moving the movable post 20 to be described below, and is provided at the upper and lower portions of the fixing posts 13 and 13 ', respectively. The moving means 18 linearly reciprocates the moving post 20. Although not shown, the moving post 20 can be linearly moved using a moving driving source such as an electric motor. The moving slot 19 of the moving means 18 corresponds to the path through which the moving post 20 is moved. In this embodiment, a total of four moving means 18 are provided, two for each of the pair of fixing posts 13 and 13 '.

The pair of fixing posts 13 and 13 'may be provided with a pair of movement driving sources respectively coupled to both ends of the movement post 20 to provide a driving force for linear movement of the movement post 20 , The pair of movement driving sources are synchronized to linearly move the movement post 20 at a constant speed and direction.

A moving post (20) is installed in the fixing posts (13, 13 '). The moving post 20 is installed between the pair of fixing posts 13 and 13 ', more precisely, it is installed on the moving means 18 and is linearly moved along the moving means 18. The movable post 20 is a part in which a rolling assembly 30 to be described below is installed and the rolling assembly 30 is movable in the longitudinal direction of the movable post 20, (20).

The moving post (20) is moved linearly along the moving means (18). When the moving post 20 is linearly moved along the moving means 18 (see the arrows in Fig. 3), the periphery of the lower connecting portion P2 of the display P can be kept unfolded If the movable post 20 is fixed in one position without being moved, a strong bending moment is applied to the lower connecting portion P2 as the periphery of the lower connecting portion P2 is warped in the process of winding the display P, P2 may be damaged. This is because the lower connection part P2 is not a flexible material, unlike the display P, or it can be a flexible material. That is, the moving means 18 prevents excessive bending moment from being applied to the lower connection portion P2 through movement.

As shown in FIG. 3, the display P maintains a flat state around the lower connecting portion P2 at the lower end coupled to the connector means 15 in a fully extended state. 5, the periphery of the lower connection part P2 is maintained in the opened state even when the display P is fully wound by the rolling assembly 30 because the movable post 20 is moved rearward of the connector means 15 It is possible. In other words, unlike FIG. 3, it can be seen in FIG. 5 that the movable post 20 is moved to the rear of the connector means 15. The movement of the transfer post 20 can be continuous or discontinuous along the movement path formed in the moving means 18. [ In FIG. 3, one of the pair of fixing posts 13 and 13 'is omitted in order to show the structure more clearly.

4, a guide slot 22 is formed in the movement post 20 in the vertical direction of the movement post 20. As shown in FIG. The guide slot 22 guides the movement of the rolling assembly 30 to be described below. When the rolling assembly 30 rotates and winds or unfolds the display P, Can be linearly moved along the vertical direction 22 in the vertical direction. A driving source such as a motor for linearly moving the rolling assembly 30 may be installed in the guide slot 22.

A rolling assembly (30) is mounted on the moving post (20). The rolling assembly 30 rotates at least a part of the display P in a selectively fixed state to wind or unfold the display P. The rolling assembly 30 allows the user to demonstrate the display P while winding or unfolding the display P while rotating and the rolling assembly 30 includes a display P corresponding to the opposite side of the connector means 15, As shown in Fig. That is, the connector means 15 and the rolling assembly 30 fix the left and right ends of the display P, respectively, in which the rolling assembly 30 rotates to wind or unfold the display P.

Meanwhile, the rolling assembly 30 is not only rotated but also moves linearly along the movement post 20 itself. The rolling assembly 30 is installed on the movement post 20 so as to be movable in a direction different from the movement direction of the movement post 20. [ More precisely, the rolling assembly 30 is moved laterally along the movement post 20, which is orthogonal to the direction of movement of the movement post 20. Needless to say, the rolling assembly 30 may be moved obliquely with respect to the moving direction of the movement post 20 or along a predetermined curved path.

 The rolling assembly 30 includes a rotation driving source 32 that is linearly movable along a guide slot 22 of the movement post 20. [ The rotation driving source 32 is installed inside the guide slot 22 of the moving post 20 and is composed of a driving source capable of providing a rotating force like a motor to rotate the rotating part 31 of the rolling assembly 30 .

The rolling assembly 30 may be linearly moved along the guide slot 22 through a separate driving source or may be divided into a rolling part 32 for partially rolling the rotation driving source 32 for rotating the rolling assembly 30, The assembly 30 may be configured to move linearly.

As shown in FIG. 3, the rolling assembly 30 is provided with a rotation unit 31. The rotation part 31 is linearly moved along the guide slot 22 together with the rotation driving source 32 and is rotated by the rotation driving source 32. That is, the rotating portion 31 is a portion where the rotating portion substantially rotates. At least a part of the rotation part 31 is exposed or protruded from the outside of the guide slot 22.

The rotation unit 31 is provided with a fixing unit 40. The fixing means 40 is connected to the rotation part 31 through a coupling bracket 35 to selectively fix one end of the display P. [ That is, the fixing means 40 can fix the display P or release the fixed state. The fixing means 40 may release the state in which the display P is fixed so that the operation of separating or replacing the demodulated display P with another display P can be easily performed.

Specifically, the fixing means 40 includes a pair of fixing bars 41 and 43 which are moved relative to each other to allow the display P to be selectively pressed therebetween. The pair of fixing bars 41 and 43 are pressed by pressing the outer surface of the display P while narrowing the gap therebetween. The arrows in Fig. 4 show the moving directions of the fixing bars 41 and 43 when the display P is fixed.

The pair of fixing bars 41 and 43 are moved relative to each other by the movement of a fixture (not shown). The fixture may be mobilized in various manners such as an electromagnet, a motor, a hydraulic or pneumatic cylinder, and the like. In this embodiment, the movement of the fixture using the electromagnet causes the fixed bars 41 and 43 to operate. Although not shown, silicone is adhered to the facing surfaces of the pair of fixing bars 41 and 43 to prevent the outer surface of the display P from being damaged in fixing the display P, So that the display P can be fixed more securely.

Hereinafter, the process of winding the display will be described in detail with reference to the drawings.

First, one end of the display P is fixed to the connector means 15 and the other end is fixed to the rolling assembly 30. The pair of fixing bars 41 and 43 of the fixing means 40 provided in the rolling assembly 30 moves in a direction to close each other and presses and fixes the display P positioned therebetween. The connector (15) is fitted with the lower connection part (P2) of the display (P).

In this state, a signal applying step for applying a driving signal to the display (P) through the connector means (15) is followed. When the signal is applied, the display P is operated to display a pattern. The performer and the viewer can visually observe the pattern to confirm whether the display P is operating. The pattern to be applied may be made by a separate pattern generator (not shown), and the pattern generator may be integrally formed on the display P or may be connected to the outside. The pattern generator can be applied to a display P having an ultra high definition (UHD) of 4K or 8K or more.

And the rolling assembly 30 is actuated to follow the rolling step of winding the display P. [ When the rolling assembly 30 rotates (in the direction of arrow 2 in Fig. 4) while fixing the display P, the display P is wound. At the same time, the rolling assembly 30 is linearly moved in the direction of the connector means 15. The rolling assembly 30 moves in the direction of the opposite connector means 15 in order to compensate for the length that the display P is rolled and shortened.

At the same time, the moving post 20 on which the rolling assembly 30 is mounted is linearly moved. The moving post 20 moves rearward (in the direction of arrow 3 in Fig. 4) away from the connector means 15 by the moving means 18. [ The movement of the transfer post 20 is performed simultaneously with the rotation and linear movement of the rolling assembly 30. [

When the movable post 20 is linearly moved backward along the moving means 18 to the connector means 15, the periphery of the lower connection portion P2 of the display P can be kept unfolded. Therefore, it is possible to prevent a strong bending moment from being applied to the lower connection part P2 as the periphery of the lower connection part P2 is warped in the process of winding the display P. 5 shows a state in which the display P is completely wound around the lower connection P2 of the display P, that is, around the connector 15, even if the display P is fully wound, (P) maintains a flat expanded state.

Finally, a verification step may be performed to determine whether the pattern of the display P wound or unfolded is normal. The verification step may be performed by a separate test apparatus or by an operator observing with the naked eye.

Figure 6 is a simplified illustration of the process of movement of the rolling assembly 30. More precisely, FIG. 6 shows the rotation and linear motion of the rolling assembly 30 as viewed in the direction of the arrows in FIG. In this case, the rolling assembly 30 is rotated in the direction of the arrow 1 and simultaneously moves downward along the guide slot 22 of the movement post 20. [ At this time, the moving post 20 itself also moves linearly by the moving means 18, so that the moving path of the rolling assembly 30 forms an inclined path as shown by an arrow ②. Reference numerals 30A to 30C denote positions of the rolling assembly 30 in the process of moving from the state of FIG. 3 to the state of FIG. 5, respectively.

Of course, with the present invention, it is possible to perform a rolling demonstration in which the display P is completely wound as shown in FIG. 5, but it is also possible to perform bending by bending the display P by rotating the rolling assembly 30 a predetermined number of times.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: main frame 13: fixed post
15: connector means 16: engaging groove
18: Moving means 20: Moving post
22: guide slot 30: rolling assembly
31: rotation part 40: fixing means
P: Display

Claims (7)

A main frame including a lower body forming a skeleton,
A pair of fixing posts provided in the main frame and electrically connected to at least one of the longitudinally extending displays to apply an electric signal,
A pair of movable posts installed between the pair of fixed posts and linearly movable along the fixed posts,
A rolling assembly mounted on the moving post to be movable in the longitudinal direction of the moving post and rotated to selectively rotate at least a part of the display to wind or unroll the display;
And a transparent case installed in the main frame, the transparent case enclosing the fixing post, the moving post, and the display.
The display device according to claim 1, wherein the fixing post is provided with connector means for engaging with and fixing the connecting means provided on the display, wherein the rolling assembly includes a display for selectively fixing one end of the display corresponding to the opposite side of the connector means, Of the bending and rolling demonstration apparatus.
2. The assembly of claim 1, wherein the rolling assembly
A rotation driving source installed on the movement post so as to be linearly movable along a guide slot formed in the longitudinal direction of the movement post;
A rotation unit that is linearly moved along the guide slot together with the rotation drive source and is rotatable by the rotation drive source,
And a fixing means provided on the rotating portion for selectively fixing one end of the display.
4. The apparatus according to claim 3,
A pair of fixing bars which are relatively moved with each other to allow the display to be selectively pressed therebetween,
And a stationary movement for relative movement of the stationary bar.
3. The display of claim 2, wherein when the rolling assembly winds or unfolds the display, the movement posts continuously or discontinuously move along the path of movement of the stationary posts to reduce the bending moment applied to the connection means of the display Of the bending and rolling demonstration apparatus.
6. The bending and rolling demonstration apparatus of claim 5, wherein the rolling assembly is linearly moved along a guide slot of a moving post formed in the longitudinal direction of the moving post.
The apparatus according to claim 1, wherein the pair of fixed posts are each provided with a pair of movement driving sources respectively coupled to both ends of the movement post to provide a driving force for linear movement of the movement post, And bending and rolling demonstration of the display synchronously moving the moving post at a constant speed and direction.

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