KR102203909B1 - Rollable organic light emitting diode disaplay device - Google Patents

Abstract

A rollable organic light emitting display device according to an embodiment of the present invention is provided. The rollable organic light emitting display device includes a rollable organic light emitting display panel and a rolling part. The rollable organic light emitting display panel has a display area and a non-display area extending from the display area and including a rolling part attachment area. The rolling part has a cylindrical shape, and is configured to rotate so that the rollable organic light emitting display panel is rolled and unfolded. The rolling part is attached to the rollable OLED display panel in the rolling part attaching area, and the rolling part attaching area is defined by a cylindrical arc having an angle of 355 degrees or less. Since the rolling part and the rollable organic light emitting display panel are attached to the rolling part attachment area, the display area is not covered and the display area is not bent by the rolling part, so that visibility of the rollable organic light emitting display device may be improved.

Description

Rollable organic light emitting display device {ROLLABLE ORGANIC LIGHT EMITTING DIODE DISAPLAY DEVICE}

The present invention relates to a rollable organic light emitting display device, and more particularly, by configuring a rolling part attachment area to which a rolling part capable of winding a rollable organic light emitting display panel is attached in a non-display area where a screen is not displayed. The present invention relates to a rollable organic light emitting display device with improved visibility.

The organic light emitting display device is a self-emission type display device, and unlike a liquid crystal display device, it does not require a separate light source, and thus can be manufactured in a lightweight and thin form. In addition, the organic light emitting display device is not only advantageous in terms of power consumption by low voltage driving, but also has excellent color realization, response speed, viewing angle, and contrast ratio (CR), and thus is being studied as a next-generation display.

In recent years, a flexible organic light emitting display device, which is manufactured to display an image even if it is bent like paper, using a material having flexibility such as plastic, which is a flexible material, has attracted attention as a next-generation display device. The flexible organic light emitting display device is being applied not only to computer monitors and TVs, but also to personal portable devices, and researches on flexible organic light emitting display devices having a large display area and reduced volume and weight are in progress. .

Among flexible organic light emitting displays, various technologies have been developed to implement a rollable organic light emitting display device in which an organic light emitting display panel can be wound around a pillar.

[Related technical literature]

1. Flexible display device (Korean Patent Application No. 2012-0154273)

The rollable organic light emitting display device is implemented by attaching a rolling portion having a cylindrical column and a rollable organic light emitting display panel capable of driving even at a radius of curvature less than the radius of the rolling portion.

A rollable organic light emitting display panel is generally divided into a display area having a plurality of pixels for displaying a screen and a non-display area in which wirings and a pixel driver are disposed. Here, in order for the display area for displaying the screen to be visually recognized from the outside, the rolling part must not cover the display area when the rollable organic light emitting display device is fully open, and the display area must not be bent by the rolling part. do. Accordingly, the rolling part was attached to the non-display area of the rollable organic light emitting display panel.

However, even if the rolling part is attached to the non-display area, if the rolling part is too large, the rolling part may cover the display area even when the rollable organic light emitting display device is fully opened. In addition, even if the rolling portion is attached to the non-display area, the portion to which the rolling portion is attached and the display area are too close to each other, and there is a problem in that the display area is maintained in a curved state. When the display area is covered or the display area is maintained in a curved state, the user's perception of the screen may be deteriorated, and user satisfaction with the rollable organic light emitting display device may be significantly reduced.

Accordingly, the inventors of the present invention have constrained the space for attaching the rolling part to the conventional rollable organic light emitting display panel, and in order to implement a rollable organic light emitting display device with improved visibility, a rollable organic light emitting display panel having a new structure Recognized that this was necessary.

Further, the inventors of the present invention have invented a rollable OLED display having a new structure in which the display area is not bent or covered by the rolling part when the rollable OLED display is fully opened.

Accordingly, an object to be solved by the present invention is to provide a rollable organic light emitting display device in which a display area can be completely visually recognized without being bent or covered by a rolling part.

Another problem to be solved by the present invention is to provide a rollable organic light-emitting display device that minimizes manufacturing cost by configuring a portion where the rolling part and the rollable organic light-emitting display panel are connected as one of the components of the rollable organic light-emitting display panel. To provide.

The problems of the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above-described problems, a rollable organic light emitting display device according to an exemplary embodiment of the present invention is provided. The rollable organic light emitting display device includes a rollable organic light emitting display panel and a rolling part. The rollable organic light emitting display panel has a display area and a non-display area extending from the display area and including a rolling part attachment area. The rolling part has a cylindrical shape, and is configured to rotate so that the rollable organic light emitting display panel is rolled and unfolded. The rolling part is attached to the rollable OLED display panel in the rolling part attaching area, and the rolling part attaching area is defined by a cylindrical arc having an angle of 355 degrees or less. Since the rolling part and the rollable organic light emitting display panel are attached to the rolling part attachment area, the display area is not covered and the display area is not bent by the rolling part, so that visibility of the rollable organic light emitting display device may be improved.

According to another feature of the present invention, the rollable organic light emitting display panel includes a first substrate and a second substrate facing the first substrate and on which a pad portion connected to the circuit portion is disposed, and the rolling portion is the first substrate or It is characterized in that it is attached to the second substrate.

According to another feature of the present invention, the first substrate is made of metal, and the rolling portion is attached to the first substrate in the rolling portion attachment region.

According to another feature of the present invention, the area of the first substrate is larger than the area of the second substrate.

According to another feature of the present invention, the first substrate includes an opening for exposing the pad.

According to another feature of the present invention, the rollable organic light emitting display panel further includes a polarizing plate having a portion extending from an edge of the rollable organic light emitting display panel, and the rolling portion attaching region is in an area of the extended portion of the polarizing plate. , The rolling part is attached to the polarizing plate in the rolling part attachment area.

According to another feature of the present invention, the rollable organic light emitting display panel further includes a protective film having a portion extending from an edge of the rollable organic light emitting display panel, and the rolling portion attaching region is an extended portion of the protective film. It is in, and the rolling part is attached to the protective film in the rolling part attachment area.

According to another feature of the present invention, the rollable organic light emitting display panel further includes a connection portion having a portion extending from an edge of the rollable organic light emitting display panel, and the rolling portion attaching region is in an area of the extended portion of the connection portion. , The rolling part is attached to the connection part in the rolling part attachment area.

According to another feature of the present invention, the rollable organic light emitting display panel includes a first substrate and a second substrate facing the first substrate and having a pad portion connected to the circuit unit disposed thereon, and the edge of the rollable organic light emitting display panel is It is characterized in that it is the edge of the first substrate or the second substrate.

According to another feature of the present invention, the circuit part is located in the rolling part.

In order to solve the above-described problems, the rollable organic light emitting display device according to an exemplary embodiment of the present invention includes a rollable organic light emitting display panel and a rolling part. The rollable organic light-emitting display panel has a display area and a non-display area extending from the display area and including a rolling part attachment area. In addition, the rollable organic light-emitting display panel includes a first substrate, a second substrate facing the first substrate and having a pad portion connected to the circuit unit disposed thereon, and the first substrate or the second substrate. And a connection portion having a portion extending from the edge. The rolling part is configured to rotate so that the rollable organic light emitting display panel is in a rolled state and an unfolded state. The rolling part is attached to the connection part of the rollable organic light emitting display panel in the rolling part attachment area. Since the rolling part and the rollable organic light emitting display panel are attached through the connection part, it is possible to implement a rollable organic light emitting display device while minimizing design changes.

Details of other embodiments are included in the detailed description and drawings.

The present invention can provide a rollable organic light-emitting display device with improved visibility of a user because the area to which the rolling part is attached does not overlap the display area in the open state and the display area is not bent by the rolling part.

In addition, the present invention has the effect of providing a rollable organic light emitting display device minimizing manufacturing cost by configuring the rolling part and the portion to which the rollable organic light emitting display panel is attached as one of the components of the rollable organic light emitting display panel. There is.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present specification.

1A is a schematic perspective view of a rollable organic light emitting display device according to an embodiment of the present invention.
1B is a schematic perspective view illustrating a rolled organic light emitting display device according to an exemplary embodiment of the present invention.
1C is a schematic perspective view illustrating an unfolded state of a rollable organic light-emitting display device according to an exemplary embodiment of the present invention.
1D and 1E are schematic cross-sectional views of a rollable organic light emitting display device according to an exemplary embodiment of the present invention for describing a rolling part attachment area.
2 is a schematic enlarged cross-sectional view of a rollable organic light emitting display device according to an exemplary embodiment of the present invention.
3 to 5A are schematic enlarged cross-sectional views of a rollable organic light emitting display device according to various embodiments of the present disclosure.
5B is a schematic plan view of a rollable organic light emitting display device according to various embodiments of the present invention for describing an opening in FIG. 5A.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different shapes, only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are exemplary, and the present invention is not limited to the illustrated matters. The same reference numerals refer to the same components throughout the specification. In addition, in describing the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. When'include','have','consists of' and the like mentioned in the specification are used, other parts may be added unless'only' is used. In the case of expressing the constituent elements in the singular, it includes the case of including the plural unless specifically stated otherwise.

In interpreting the constituent elements, it is interpreted as including an error range even if there is no explicit description.

In the case of a description of the positional relationship, for example, if the positional relationship of two parts is described as'upper','upper of','lower of','next to','right' Or, unless'direct' is used, one or more other parts may be located between the two parts.

When an element or layer is referred to as “on” another element or layer, it includes all cases in which another layer or other element is interposed directly on or in the middle of another element.

Although the first, second, and the like are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical idea of the present invention.

The same reference numerals refer to the same components throughout the specification.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not limited to the size and thickness of the illustrated component.

Each of the features of the various embodiments of the present invention can be partially or entirely combined or combined with each other, and as a person skilled in the art can fully understand, technically various interlocking and driving are possible, and each of the embodiments may be independently implemented with respect to each other. It may be possible to do it together in a related relationship.

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

1A is a schematic perspective view of a rollable organic light emitting display device according to an exemplary embodiment of the present invention. 1B is a schematic perspective view illustrating a rolled organic light emitting display device according to an exemplary embodiment of the present invention. 1C is a schematic perspective view illustrating an unfolded state of a rollable organic light-emitting display device according to an exemplary embodiment of the present invention.

The rollable organic light-emitting display device 100 is an organic light-emitting display device capable of operating in a rolled state and an open state. Referring to FIG. 1A, a rollable organic light emitting display device 100 includes a housing 130 for fixing the rollable organic light emitting display panel 110, the rolling part 120, and the rolling part 120 and supporting components. Includes (housing).

The rollable organic light emitting display panel 110 is an organic light emitting display panel having flexibility. The rollable organic light-emitting display panel 110 is an organic light-emitting display panel that can be rolled like a roll, and is an organic light-emitting display panel that can be driven even if it has a radius of curvature equal to or less than the radius of the rolling unit 120. The rollable organic light emitting display panel 110 includes a plurality of pixels for displaying a screen, and includes constituent elements for driving the plurality of pixels.

The rolling part 120 is configured to unfold the rollable organic light emitting display panel 110. That is, the rolling unit 120 is configured to rotate so that the rollable organic light emitting display panel 110 is in a rolled state and an unfolded state. The rolling part 120 includes a body part for winding the rollable OLED display panel 110 and a motor for rotating the rolling part 120. The body portion is formed in a cylindrical shape, for example, and the rolling portion 120 may be formed in a substantially cylindrical shape. The motor may be positioned inside or outside the rolling unit 120 to rotate the rolling unit 120 in a clockwise or counterclockwise direction.

The housing 130 fixes the rolling part 120 and protects the rolling part 120 and the rollable organic light emitting display panel 110 from external impacts. The housing 130 is configured to fix a part of the rolling part 120 so that the rolling part 120 rotates. The housing 130 may include a power unit, a speaker, a control board, etc., or may be integrated.

The rollable OLED display 100 is configured to be switchable between a rolled state and an unfolded state. When the rollable organic light emitting display device 100 is not in operation, it becomes a rolled state. Referring to FIG. 1B, a rolled organic light emitting display device 100 is illustrated. The rolled state is a state in which the rollable organic light emitting display panel 110 is rolled on the rolling part 120. The rolled state may be a state in which the rollable organic light emitting display panel 110 rolls the rolling part 120 a plurality of times. When the rollable organic light-emitting display device 100 is rolled up, it is easy to carry, and the panel is not visible, so that the aesthetic sense of the interior may be enhanced.

When the rollable organic light emitting display device 100 is operated, it is in an open state. Referring to FIG. 1C, the rollable organic light emitting display device 100 is shown in an open state. The unfolded state is a state in which the rolling part 120 is not in contact with the rolling part 120 except for a part attached to the rollable organic light emitting display panel 110. That is, in the unfolded state, the rollable organic light emitting display panel 110 is exposed to the user and the screen can be displayed to the user. When the rollable organic light emitting display device 100 is unfolded, the user can visually recognize the image from the rollable organic light emitting display panel 110.

In FIG. 1C, the rollable organic light emitting display device 100 has a rolling part attachment area AA. The rolling part attachment area AA is an area to which the rolling part 120 and the rollable organic light emitting display panel 110 are attached. When the rolling part 120 has a cylindrical shape, the rolling part attaching area AA is a partial area of the side surface of the rolling part 120. A part of the side surface of the cylindrical shape may be defined as an arc of an upper surface of a cylindrical shape, an arc of a lower surface, and lines of a side surface connecting the arcs. In the rollable organic light emitting display device 100 according to the exemplary embodiment, the rolling part attachment area AA is defined by a cylindrical arc having an angle of 355 degrees or less. The area of the rolling part attachment area AA can be calculated by multiplying the length of the arc by the height of the cylinder. Since the rolling part attachment area AA is defined by a cylindrical arc having an angle of 355 degrees or less, the rollable organic light emitting display panel 110 is attached to surround a part of the side surface of the rolling part 120.

1D and 1E are schematic cross-sectional views of a rollable organic light emitting display device according to an exemplary embodiment of the present invention for explaining a rolling part attachment area. 1D and 1E illustrate that the rolling part 120 and the arc defining the rolling part attaching area AA in the rollable organic light emitting display panel 110 have different angles.

Referring to FIG. 1D, the arc defining the rolling part attachment area AA has an angle θ1 of 355 degrees. Accordingly, the rollable organic light emitting display panel 110 surrounds almost the entire surface of the rolling part 120. When the cylindrical arc defining the rolling part attachment area AA has an angle exceeding 355 degrees, the rollable organic light emitting display panel 110 surrounding the rolling part 120 starts to overlap. The organic light emitting display panel 110 may have an excessively large radius of curvature. When the radius of curvature increases, the organic light emitting device of the rollable organic light emitting display panel 110 may be damaged.

Referring to FIG. 1E, the arc defining the rolling part attachment area AA has an angle θ2 of 80 degrees, which is 355 degrees or less. In FIG. 1E, the rollable organic light-emitting display panel 110 is attached so as to surround a part of the side surface of the rolling part 120, and the rollable organic light-emitting display panel 110 is completely unfolded. Hereinafter, various configurations of the rollable organic light emitting display panel 110 in contact with the rolling part 120 in the rolling part attaching area AA defined by an arc having an angle of 355 degrees or less as shown in FIG. 1E will be described.

2 is a schematic enlarged cross-sectional view of a rollable organic light emitting display device 200 according to an embodiment of the present invention. In FIG. 2, an exaggerated scale is used for convenience of explanation. For example, the rolling part 120 may be implemented larger than that illustrated in FIG. 2, and the rollable organic light emitting display panel 110 may have a thinner thickness. Referring to FIG. 2, the rollable organic light emitting display device 200 includes a first substrate 112, a second substrate 114, a display unit 116, an adhesive layer 118, a pad unit 160, and a flexible printed circuit board. A rollable organic light emitting display panel 110 including 140, a rolling unit 120, and a circuit unit 170 are included.

The first substrate 112 and the second substrate 114 support various components of the rollable organic light emitting display panel 110. The second substrate 114 faces the first substrate 112. The first substrate 112 and the second substrate 114 are made of a material having flexibility, for example, a transparent plastic such as polyimide, or a metal thin enough to have flexibility. have. The display unit 116 is formed on the second substrate 114, has a thin film transistor, an organic light emitting device, and the like, and displays a screen.

An adhesive layer 118 for bonding the first substrate 112 and the second substrate 114 is interposed between the first substrate 112 and the second substrate 114. Various materials may be used as the adhesive layer 118, and for example, a thermosetting material or a photocurable material may be used.

The flexible printed circuit board 140 is a printed circuit board having flexibility, and a control unit such as an IC chip and a circuit unit is mounted on the flexible printed circuit board 140. The flexible printed circuit board 140 is configured to transmit a signal for driving the organic light emitting device of the display unit 116 from the control unit to the organic light emitting device.

The pad unit 160 is a pad for connection to the flexible printed circuit board 140 and is formed on the upper surface of the second substrate 114. The pad unit 160 may be formed of the same material as one of various conductive materials constituting the thin film transistor and the organic light emitting device formed on the display unit 116.

The rollable organic light emitting display panel 110 includes a display area DA and a non-display area NDA. The display area DA is an area on which a screen is displayed, and refers to an area in which the display unit 116 including a thin film transistor, an organic light emitting element, or the like is formed. The non-display area NDA is an area in which an image is not displayed on the rollable organic light emitting display panel 110, and is an area in which various wires and driving units are formed.

The rolling part attachment area AA is included in the non-display area NDA. The rolling part attaching area AA does not overlap the display area DA. When the rolling part attachment area AA overlaps the display area DA, a part of the rollable organic light emitting display panel 110 may be bent by the rolling part 120, so that a distorted screen may be recognized by the user. .

Furthermore, even if the rolling part attaching area AA is included in the non-display area NDA, when the rolling part 120 is too large, the rolling part 120 may be in a state in which the rollable organic light emitting display device 200 is fully opened. The display area DA may be covered. In addition, even if the rolling part 120 is attached to the non-display area NDA, the part to which the rolling part 120 is attached and the display area are too close to each other, so that the display area may look bent.

In order to solve this problem, in the rollable organic light emitting display device 200 according to an embodiment of the present invention, the rolling part attaching area AA is spaced apart from the display area DA, and the rollable organic light emitting display panel 110 is separated from the display area DA. ) Is in an open state, the entire display area DA is exposed to the outside.

Forming the rolling part attachment area AA to be spaced apart from the display area DA may be implemented by various configurations. The rolling part 120 may come into contact with one of various components of the rollable organic light emitting display panel 110. Various components of the rolling part 120 and the rollable organic light emitting display panel 110 may be adhered to each other by an adhesive film, a liquid adhesive, or a curable material. Referring to FIG. 2, the rolling part 120 is attached to the first substrate 112 of the rollable organic light emitting display panel 110. In FIG. 2, the first substrate 112 and the second substrate 114 extend from the display area DA, so that the non-display area NDA includes the rolling part attaching area AA, and the rolling part attaching area AA. ) Extends to be spaced apart from the display area DA. The rollable organic light-emitting display panel 110 of the rollable organic light-emitting display device 200 according to an embodiment of the present invention has a non-display area NDA that extends to secure the rolling part attachment area AA, To this end, the first substrate 112 and the second substrate 114 may be extended.

The first substrate 112 may be made of metal, and the display unit 116 includes a bottom in which light emitted from the organic light emitting device is emitted toward the second substrate 114 on which a thin film transistor for driving the organic light emitting device is formed. ) It may be an emission type organic light emitting device.

Referring to FIG. 2, the flexible printed circuit board 140 connected to the pad unit 160 is located inside the rolling unit 120 through the opening H1 of the rolling unit 120. The flexible printed circuit board 140 may be connected to the circuit unit 170, and when the flexible printed circuit board 140 and the circuit unit 170 are located inside the rolling unit 120, the rollable organic light emitting display panel ( When 110) is wound around the rolling part 120, the circuit part 170 is not subjected to pressure. When the circuit unit 170 receives less pressure, physical damage to the circuit unit 170 is reduced, and durability of the rollable OLED display 200 is improved.

In the rollable organic light emitting display device 200 according to the exemplary embodiment of the present invention illustrated in FIG. 2, the first substrate 112 and the second substrate 114 are extended to have a cylindrical arc having an angle of 355 degrees or less. By securing the rolling part attaching area AA defined by, visibility of the screen displayed by the display area DA in the rollable organic light emitting display 200 may be improved.

3 is a cross-sectional view of a rollable organic light emitting display device according to another exemplary embodiment of the present invention. In FIG. 3, since the display portion 316 and the adhesive layer 318 of the rollable organic light emitting display panel 310 are substantially the same as the display portion 116 and the adhesive layer 118 described in FIG. 2, duplicate descriptions are omitted.

Referring to FIG. 3, in the rollable organic light emitting display device 300 according to another exemplary embodiment of the present invention, a separate connection part 350 is included in the rollable organic light emitting display panel 310. The rolling unit 320 is attached to the rollable organic light emitting display panel 310 by being attached to a separate connection unit 350. That is, in FIG. 3, the first substrate 310 and the second substrate 314 of the rollable organic light emitting display panel 310 do not extend to include the rolling part attachment area AA in the non-display area NDA. .

A part of the connection part 350 overlapping the first substrate 312 is attached to one surface of the rollable organic light emitting display panel 310, and the remaining part of the connection part 350 that does not overlap the first substrate 312 is It extends from the first substrate 310 of the rollable organic light emitting display panel 310. That is, the connection part 350 is formed outside the display area DA on the first substrate 310. The connection part 350 has a portion 355 extending from an edge of the second substrate 314. The rolling portion 320 attachment region is defined within the extended portion 355 of the connecting portion 350.

The connection part 350 is not limited as long as it can be attached to the rolling part 320 and may be made of various materials. For example, the connection part 350 may be formed of the same material as the first substrate 312. Since the connection part 350 and the first substrate 312 are subjected to similar stress during rolling, when the connection part 350 is formed of the same material as the first substrate 312, the configuration of the rollable organic light emitting display panel 310 The stress applied to the elements is uniform so that damage caused by high stress in a specific area can be reduced.

When the connection part 350 is separately included in the rollable organic light-emitting display panel 310 and the rolling part 320 is attached to the rollable organic light-emitting display panel 310 through the connection part 350, the rollable organic light-emitting display The mounting area of the rolling part 320 may be spaced apart from the display area DA without significantly changing the design of the panel 310. For example, without changing the length of the first substrate 310 and the second substrate 314 or the design of a wiring crossing the first substrate 310 and the second substrate 314, an area where the rolling part 320 is attached may be secured.

In addition, the flexible printed circuit board 340 connected to the pad part 360 is extended to be located inside the rolling part 320, and the flexible printed circuit board 340 is provided with the circuit part 370 inside the rolling part 320. Is connected with

4 is a cross-sectional view of a rollable organic light emitting display device according to another exemplary embodiment of the present invention. In FIG. 4, since the display portion 416 and the adhesive layer 418 of the rollable organic light emitting display panel 410 are substantially the same as the display portion 116 and the adhesive layer 118 described in FIG. 2, duplicate descriptions are omitted. In FIG. 4, it is assumed that the organic light-emitting device is a bottom emission type organic light-emitting device. Accordingly, light from the organic light-emitting device is emitted toward the second substrate 414, and the first substrate 410 is made of metal.

Referring to FIG. 4, in the rollable organic light emitting display device 400 according to another exemplary embodiment, a rollable organic light emitting display panel 410 includes a polarizing plate 450. The polarizing plate 450 is disposed on the front surface of the second substrate 414. Further, the polarizing plate 450 has a portion 455 extending from an edge of the second substrate 414. The rolling portion 420 attaching region is defined within the extended portion 455 of the polarizing plate 450. The rolling part 420 is attached to the extended portion 455 of the polarizing plate 450, so that the rolling part 420 is attached to the rollable organic light emitting display panel 410.

The polarizing plate 450 is disposed on the second substrate 414 of the rollable organic light emitting display panel 410, and the rolling part 420 is displayed through the extended portion 455 of the polarizing plate 450. When attached to the panel 410, the area where the rolling part 420 is attached may be spaced apart from the display area DA without significantly changing the design of the rollable organic light emitting display panel 410. Accordingly, when the rollable OLED display 400 is in an unfolded state, the display area DA is not covered or bent. In addition, in the rollable organic light emitting display panel 410 in which the polarizing plate 450 is used, since the polarizing plate 450 can be extended to secure an area where the rolling part 420 is attached, manufacturing cost can be relatively reduced.

Meanwhile, in FIG. 4, it is assumed that the organic light emitting device of the rollable organic light emitting display panel 410 is a bottom emission type organic light emitting device, and the polarizing plate 450 is shown to be attached to the second substrate 414. The polarizing plate 450 may be attached to the first substrate 410 according to the emission method of the organic light emitting device. In addition, not limited to the polarizing plate 450 in FIG. 4, a protective film or a polarizing plate that may be formed on the entire surface of the first substrate 410 or the second substrate 414 of the rollable organic light emitting display panel 410 An optical film different from 450) may be used. That is, the protective film or the optical film may have an extended portion 455, thereby securing an area where the rolling portion 420 is attached.

As in the rollable organic light-emitting display device 400 in FIG. 4, a new process is provided by configuring the part to which the rolling part 420 and the rollable organic light-emitting display panel 410 are attached with a polarizing plate 450 or a protective film. Since this is not added, the manufacturing cost of the rollable OLED display 400 may be minimized.

5A is a cross-sectional view of a rollable organic light emitting display device according to various embodiments of the present disclosure. In FIG. 5A, since the display portion 516 and the adhesive layer 518 of the rollable organic light emitting display panel 510 are substantially the same as the display portion 116 and the adhesive layer 118 described in FIG. 2, a duplicate description is omitted.

Referring to FIG. 5A, in the rollable organic light-emitting display device 500 according to various embodiments of the present invention, only the first substrate 510 of the rollable organic light-emitting display panel 510 secures an attachment area of the rolling part 520. Is extended to The first substrate 510 extends from the display area DA, so that the non-display area NDA includes the rolling part 520 attaching area and the rolling part 520 attaching area is spaced apart from the display area DA. do. Accordingly, the area of the first substrate 510 is formed to be larger than the area of the second substrate 514. However, when only the first substrate 510 is extended, the first substrate 510 covers the pad portion 560 on the second substrate 514. Since the flexible printed circuit board 540 is connected after the first substrate 510 and the second substrate 514 are bonded together by the adhesive layer 518, if the upper portion of the pad of the second substrate 514 is not exposed, There may be difficulties in a process of connecting the printed circuit board 540 to the pad unit 560.

Accordingly, the extended first substrate 510 includes an opening H2 for exposing the pad portion 560 on the second substrate 514. Even after the first substrate 510 and the second substrate 514 are bonded together through the opening H2, the flexible printed circuit board 540 may be connected to the pad portion 560 on the second substrate 514.

5B is a schematic plan view of a rollable organic light emitting display device according to various embodiments of the present invention for describing an opening in FIG. 5A. In FIG. 5B, only the first substrate 512 having the opening H2 and the flexible printed circuit board 540 are shown for convenience of description, and other components are omitted.

In FIG. 5B, the display area DA is an area above the dotted line of the first substrate 512, and the non-display area NDA is an area below the dotted line and includes the rolling part attachment area AA. The edge of the display area DA may be a non-display area due to the formation of a wire, but is simply indicated as the display area DA. The rolling part attachment area AA is disposed in the non-display area NDA, and is disposed to be spaced apart from the display area DA with the opening H2 of the first substrate 512 therebetween.

Even after the first substrate 512 is bonded to the second substrate by the opening H2 of the first substrate 512, the flexible printed circuit board 540 may be connected to the pad portion. After the pad unit is connected, the rolling unit 520 is attached to the rolling unit attachment area AA.

According to the rollable organic light emitting display device 500 according to various embodiments of the present disclosure, only the first substrate 510 is extended, thereby rolling the second substrate 514 on which a larger number of components are formed without changing the design. Since the attachment area of the part 520 can be secured, and the first substrate 510 used in the past can be extended to secure the attachment area of the rolling unit 520, manufacturing cost can be relatively reduced.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100, 200, 300, 400, 500: Rollable organic light emitting display device
110, 310, 410, 510: Rollable organic light emitting display panel
112, 312, 412, 512: first substrate
114, 314, 414, 514: second substrate
116, 316, 416, 516: display
118, 318, 418, 518: adhesive layer
120, 320, 420, 420: rolling part
130: housing
140, 340, 440, 540: flexible printed circuit board
160, 360, 460, 560: pad part
170, 370, 470, 570: circuit part
350: connection
355, 455: extended part
450: polarizing plate

Claims (11)

A first substrate, a second substrate facing the first substrate, a pad portion disposed on the second substrate and connected to a circuit portion, a display area, and the display area extending from the display area and at least by a rolling portion from the display area A rollable organic light-emitting display panel having a non-display area including a rolling part attaching area spaced apart by the uncovered distance; And
And a rolling part attached to either the first substrate or the second substrate in the rolling part attachment region,
The rolling part is configured to rotate the rollable organic light emitting display panel so that the entire display area is exposed to the outside and is in a rolled state,
The rollable organic light-emitting display device, wherein the rolling part has a cylindrical shape, and the rolling part attaching area is defined by the cylindrical arc having an angle of 355 degrees or less. The method of claim 1,
The rollable organic light-emitting display device, wherein the rolling part attachment area is defined by the cylindrical arc having an angle of 80 degrees or more and 355 degrees or less. The method of claim 1,
The first substrate is made of metal,
The rollable organic light emitting display device, wherein the rolling part is attached to the first substrate in the rolling part attachment area. The method of claim 3,
The rollable organic light emitting display device, wherein an area of the first substrate is larger than an area of the second substrate. The method of claim 4,
The rollable organic light emitting display device, wherein the first substrate includes an opening for exposing the pad. The method of claim 1,
The rollable organic light emitting display panel further includes a polarizing plate having a portion extending from an edge of the rollable organic light emitting display panel,
The rolling part attachment region is in the region of the extended portion of the polarizing plate,
The rollable organic light emitting display device, wherein the rolling part is attached to the polarizing plate in the rolling part attachment area. The method of claim 1,
The rollable organic light emitting display panel further includes a protective film having a portion extending from an edge of the rollable organic light emitting display panel,
The rolling portion attachment region is within the region of the extended portion of the protective film,
The rollable organic light emitting display device, wherein the rolling part is attached to the protective film in the rolling part attachment area. The method of claim 1,
The rollable organic light emitting display panel further includes a connection part having a portion extending from an edge of the rollable organic light emitting display panel,
The rolling portion attachment region is within the region of the extended portion of the connection portion,
The rollable organic light emitting display device, wherein the rolling part is attached to the connection part in the rolling part attachment area. The method according to any one of claims 6 to 8,
The rollable organic light emitting display panel includes a first substrate and a second substrate facing the first substrate and having a pad portion connected to a circuit portion disposed thereon,
The rollable organic light emitting display device, wherein the edge of the rollable organic light emitting display panel is an edge of the first substrate or the second substrate. The method of claim 1,
The rollable organic light emitting display device, further comprising a circuit unit positioned within the rolling unit. A rollable organic light emitting display panel having a display area and a non-display area extending from the display area and including a rolling part attachment area,
First substrate,
A second substrate facing the first substrate and having a pad portion connected to the circuit portion disposed thereon, and
A connection portion disposed on the first substrate or the second substrate and having a portion extending from an edge of the first substrate or the second substrate,
The rollable organic light emitting display panel; And
And a rolling part attached to the connection part of the rollable organic light-emitting display panel in the rolling part attachment area and configured to rotate so that the rollable organic light-emitting display panel is rolled and unfolded. Light-emitting display device.

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