KR102575599B1 - Flexible display panel and method of fabricating the same - Google Patents

Abstract

The present invention provides a flexible display panel including at least one flat region in which the upper and lower substrates are formed of glass substrates, and at least one bending region in which the upper and lower substrates are formed of flexible transparent resin, and a method for manufacturing the same. . The first column spacer is disposed on the inner surface of the upper substrate in the flat region and the bending region, and the second column spacer is disposed on the inner surface of the lower substrate in the flat region and the bending region. The first column spacer and the second column spacer overlap in the bending region.

Description

Flexible display panel and manufacturing method thereof

The present invention relates to a flexible display panel and a manufacturing method thereof.

As information technology develops, the market for display devices, which are communication media between users and information, is growing. Accordingly, the use of display devices such as an organic light emitting display (OLED), a liquid crystal display (LCD), and a quantum dot display (QDD) is increasing.

The display device includes a display panel including a plurality of sub-pixels arranged in a matrix, etc., a driving unit outputting a driving signal for driving the display panel, and a power supply unit generating power to be supplied to the display panel or the driving unit. The driver includes a scan driver for supplying scan signals (or gate signals) to the display panel and a data driver for supplying data signals to the display panel.

The above-described display device may be implemented as a flexible display device, and may reproduce an input image on the screen of a display panel in which an organic light emitting diode is formed on a plastic substrate, for example. The flexible display device may be implemented in various forms such as a bendable display device, a foldable display device, and a rollable display device. Such a flexible display device can be applied not only to mobile devices such as smart phones and tablet PCs, but also to televisions, automobile displays, and wearable devices, and its application fields are expanding.

In the conventional flexible display panel, since a polarizer is combined with a transparent plastic substrate, the visibility of reflection of external light by the polarizer is reduced, resulting in overall image quality deterioration.

The present invention has been made to solve the above problems, and provides a flexible display panel that minimizes image quality deterioration due to deterioration of reflective viewing angle by using a glass substrate and a flexible transparent resin without using a plastic substrate and a method for manufacturing the same. there is

A flexible display panel according to an exemplary embodiment of the present invention includes a first flat area, a second flat area, and a bending area positioned between the first flat area and the second flat area, and includes the first flat area and the second flat area. The upper and lower substrates of the second flat region may be formed of a glass substrate, and the upper and lower substrates of the bending region may be formed of a flexible transparent resin.

A first display unit disposed on the first flat area, a second display unit disposed on the second flat area, a third display unit disposed on the bending area, and driving the first display unit, the second display unit, and the third display unit. The driving circuit may be disposed on at least one side of each side of the first display unit and the second display unit, and the driving circuit unit may not be disposed on a side surface of the third display unit.

a first column spacer disposed on an inner surface of the upper substrate of the first flat area, the second flat area and the bending area, and a second column spacer disposed on an inner surface of the lower substrate of the bending area; The first column spacer and the second column spacer may overlap in the bending region.

a first column spacer disposed on an inner surface of the lower substrate of the first flat region, the second flat region, and the bending region, and a second column spacer disposed on an inner surface of the upper substrate of the bending region; The first column spacer and the second column spacer may overlap in the bending region.

a first polarizing plate disposed on an outer surface of the upper substrate in the first flat area, the second flat area, and the bending area; and a polarizer disposed on an outer surface of the lower substrate in the first flat area, the second flat area, and the bending area. A second polarizing plate may be further included.

a first polyimide substrate disposed on inner surfaces of the upper substrate of the first flat region, the second flat region and the bending region, and an inner surface of the lower substrate of the first flat region, the second flat region and the bending region; It may further include a second polyimide substrate disposed on.

The liquid crystal layer interposed between the upper and lower substrates of the first flat region, the second flat region and the bending region may further include a liquid crystal layer and an encapsulation layer encapsulating the liquid crystal layer.

A flexible display panel according to an exemplary embodiment of the present invention includes a first bending area, a second bending area, and a flat area positioned between the first bending area and the second bending area, and includes the first bending area and the second bending area. The upper and lower substrates of the second bending area may be formed of flexible transparent resin, and the upper and lower substrates of the flat area may be formed of a glass substrate.

The liquid crystal layer interposed between the upper substrate and the lower substrate of the first bending area, the second bending area, and the flat area, and an encapsulation layer encapsulating the liquid crystal layer may be further included.

Upper substrates of the first bending area and the second bending area may be formed to surround side surfaces of the encapsulation layer.

a third column spacer disposed on an inner surface of the upper substrate of the first bending area, the second bending area, and the flat area; and a fourth column disposed on an inner surface of the lower substrate of the first bending area and the second bending area. A spacer may be further included, and the third column spacer and the fourth column spacer may overlap each other in the first bending area and the second bending area.

a third column spacer disposed on an inner surface of the lower substrate of the first bending region, the second bending region, and the flat region; and a fourth column disposed on an inner surface of the upper substrate of the first bending region and the second bending region. A spacer may be further included, and the third column spacer and the fourth column spacer may overlap each other in the first bending area and the second bending area.

a third polarizer disposed on an outer surface of the upper substrate in the first bending region, the second bending region, and the flat region, and disposed on an outer surface of the lower substrate in the first bending region, the second bending region, and the flat region; A fourth polarizing plate may be further included.

a third polyimide substrate disposed on inner surfaces of the upper substrate of the first bending region, the second bending region, and the flat region; and an inner surface of the lower substrate of the first bending region, the second bending region, and the flat region. It may further include a fourth polyimide substrate disposed on.

A method of manufacturing a flexible display panel according to an exemplary embodiment of the present invention includes preparing a flat panel display panel in which an upper substrate and a lower substrate are formed of glass substrates, and the flat display panel is formed by first flat area, second flat area, and the second flat area. defining a bending area positioned between a first flat area and the second flat area, the upper substrate and the border between the first flat area and the bending area, and the border between the second flat area and the bending area; Cutting the lower substrate, partially performing a laser lift off process on the cut upper substrate and the cut lower substrate to remove the cut upper substrate and the cut lower substrate; and The method may further include forming an upper substrate and a lower substrate of the bending region with a transparent resin having flexibility at locations where the cut upper substrate and the cut lower substrate are removed.

Disposing a first column spacer on the inner surface of the upper substrate in the first flat area, the second flat area and the bending area; and disposing a second column spacer on the inner surface of the lower substrate in the bending area. Further included, the first column spacer and the second column spacer may overlap in the bending region.

A method of manufacturing a flexible display panel according to an exemplary embodiment of the present invention includes preparing a flat panel display panel in which an upper substrate and a lower substrate are formed of glass substrates, and the flat display panel is formed by first bending areas, second bending areas, and the first bending area. defining a flat area positioned between a first bending area and the second bending area, cutting the upper substrate at a boundary between the first bending area and the flat area, and at a border between the second bending area and the flat area; Step of removing the cut upper substrate by partially performing a laser lift off process on the cut upper substrate, using a transparent resin having flexibility at the location where the cut upper substrate is removed. Forming an upper substrate of a first bending region and the second bending region, cutting a boundary between the first bending region and the flat region, and a boundary between the second bending region and the flat region, cutting the lower substrate, Removing the cut lower substrate by partially performing a laser lift off process on the cut lower substrate, and applying a transparent resin having flexibility to the location where the cut lower substrate was removed, in the first bending area and forming a lower substrate of the second bending region.

The method may further include forming a liquid crystal layer between the first bending area, the second bending area, and the upper substrate and the lower substrate of the flat area, and forming an encapsulation layer to encapsulate the liquid crystal layer.

The method may further include forming upper substrates of the first bending region and the second bending region to surround side surfaces of the encapsulation layer.

disposing a third column spacer on the inner surface of the upper substrate of the first bending area, the second bending area and the flat area; The disposing of a third column spacer may include overlapping the third column spacer and the fourth column spacer in the first bending area and the second bending area.

The flexible display panel and method of manufacturing the same according to the present invention form a flat area in which the upper and lower substrates are made of glass substrates, and a bending area in which the upper and lower substrates are made of transparent resin having flexibility, so that the flexible display panel can be applied to conventional plastic substrates. Deterioration of image quality can be prevented.

1 is a schematic diagram of a flexible display device according to an exemplary embodiment of the present invention.
FIG. 2 is a cross-sectional view of a state in which portion AA′ of FIG. 1 is folded.
3A to 3F are cross-sectional views illustrating a manufacturing method of the flexible display panel shown in FIG. 2 .
4 is a cross-sectional view of a flexible display panel according to another exemplary embodiment of the present invention.
5 is a cross-sectional view of a flexible display panel according to another exemplary embodiment of the present invention.
6A to 6G are cross-sectional views illustrating a manufacturing method of the flexible display panel shown in FIG. 5 .
7 is a cross-sectional view of a flexible display panel according to another exemplary embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Like reference numbers throughout the specification indicate substantially the same elements. In the following description, if it is determined that a detailed description of a known technology or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, the component names used in the following description are selected in consideration of the ease of writing the specification, and may be different from the part names of the actual product.

1 is a schematic diagram of a flexible display device DD according to an exemplary embodiment of the present invention, and a foldable display panel 10 including two flat areas FA1 and FA2 will be described as an example. Referring to FIG. 1 , the flexible display device DD may include a flexible display panel 10 , a printed circuit board 40 and a connection member 30 . The printed circuit board 40 is electrically connected to the flexible display panel 10 through a connecting member 30 . The connection member 30 may be a COF (Chip On Film) in which the driving circuit 20 is mounted, but is not limited thereto. For example, the connection member 30 may be implemented in a Tape Carrier Package (TCP) method.

The flexible display panel 10 includes a first flat area FA1, a second flat area FA2, and a bending area BA positioned between the first flat area FA1 and the second flat area FA2. . The first flat area FA1 and the second flat area FA2 may include a first display unit 60 and a second display unit 70 on which images are displayed, respectively. Although not shown, the upper and lower substrates of the first flat area FA1 and the second flat area FA2 may be formed of glass substrates. The bending area BA may include a third display unit 80 on which an image is displayed. Although not shown, the upper and lower substrates of the bending area BA may be formed of flexible transparent resin. Meanwhile, a driving circuit unit 90 for driving the first display unit 60 , the second display unit 70 and the third display unit 80 is formed. For example, at least one driving circuit unit 90 for driving the first display unit 60 and the second display unit 70 may be disposed on each side of the first display unit 60 and the second display unit 70. . On the other hand, since the bending area BA is a folded or bent area, the driving circuit unit 90 may not be disposed on the side surface of the third display unit 80 to minimize damage caused by stress.

Meanwhile, an encapsulation layer 50 may be formed to bond the upper substrate and the lower substrate of the flexible display panel 10 together. Although not shown in the drawing, the encapsulation layer 50 formed in the bending area BA is Damage due to stress may be prevented by forming the sealing layer 50 thicker than the width of the sealing layer 50 formed in the first flat area FA1 and the second flat area FA2.

Referring to FIG. 2 , the flexible display panel 10 according to an exemplary embodiment of the present invention will be described in more detail. FIG. 2 is a cross-sectional view of a state in which portion AA′ of FIG. 1 is folded. Referring to FIG. 2 , the first flat area FA1 and the second flat area FA2 of the flexible display panel 10 include the upper substrate 200 and the lower substrate 100, and the bending area BA has It is composed of an upper substrate 400 and a lower substrate 300 . In this case, when the flexible display panel 10 is a liquid crystal display panel, a liquid crystal layer 600 may be interposed between the upper substrates 200 and 400 and the lower substrates 100 and 300, but is not limited thereto. The flexible display panel 10 can be applied to other types of display panels such as an organic light emitting diode display panel and a quantum dot display panel. Hereinafter, in one embodiment of the present invention, an example implemented as a liquid crystal display panel will be described.

In the first flat area FA1 and the second flat area FA2 , the upper substrate 200 and the lower substrate 100 may be formed of a transparent glass substrate or hard transparent plastic, respectively. The upper substrate 400 and the lower substrate 300 of the bending area BA may be formed of a flexible material such as transparent resin. Encapsulation layers 500 are formed at both ends of the flexible display panel 10 to encapsulate the liquid crystal layer 600, and the first polarizer 800 is formed on the outer surfaces of the upper substrates 200 and 400 of the flexible display panel 10. ) and the second polarizer 700 may be disposed on outer surfaces of the lower substrates 100 and 300 of the flexible display panel 10 .

A manufacturing method of the flexible display panel 10 according to an exemplary embodiment of the present invention will be described with reference to FIGS. 3A to 3F . 3A to 3F are cross-sectional views illustrating a manufacturing method of the flexible display panel shown in FIG. 2 . Referring to FIG. 3A , an upper substrate 200 and a lower substrate 100 formed of a transparent glass substrate, a liquid crystal layer 600 interposed between the upper substrate 200 and the lower substrate 100, and an upper substrate 200 A liquid crystal display in which the first column spacer CS1 located on the inner surface, the second column spacer CS2 located on the inner surface of the lower substrate 100, and the encapsulation layer 500 for sealing the liquid crystal layer 600 on both sides are formed. and preparing the panel 10'. Also, a step of defining the first flat area FA1, the second flat area FA2, and the bending area BA of the liquid crystal display panel 10' is included.

In this embodiment, the liquid crystal display panel 10' has been described as an example, but is not limited thereto. A step of preparing a flat display panel such as an organic light emitting diode display panel or a quantum dot display panel including an upper substrate and a lower substrate formed of a glass substrate in addition to the liquid crystal display panel 10' may be included.

3B to 3C , to form the first flat area FA1, the second flat area FA2, and the bending area BA of the liquid crystal display panel 10', the bending area BA and the second flat area FA2 are formed. A step of cutting the upper substrate 200 and the lower substrate 100 at the boundary between the first flat area FA1 and the border between the bending area BA and the second flat area FA2 (GLS Scribe) is included. Subsequently, a Laser Lift Off (LLO) process (partial LLO) is partially performed on the cut upper substrate 200 and lower substrate 100 of the bending area BA to cut the upper portion of the cut bending area BA. A step of removing the substrate 200 and the lower substrate 100 is included.

Referring to FIGS. 3D to 3F , the bending area BA from which the upper substrate 200 and the lower substrate 100 are removed is formed by using a flexible material such as a transparent resin to form an upper substrate 400 and a bending area BA of the bending area BA. The flexible display panel 10 may be formed by forming the lower substrate 300 . At this time, the first flat area FA1 and the second flat area FA2 of the flexible display panel 10 are composed of the upper substrate 200 and the lower substrate 100, and the bending area BA is the upper substrate ( 400) and the lower substrate 300. Then, the outer surfaces of the upper substrate 200 and the lower substrate 100 in the first flat area FA1 and the second flat area FA2 and the upper substrate 400 and the lower substrate 300 in the bending area BA. ) disposing the first polarizing plate 800 and the second polarizing plate 700 on the outer surface, respectively. The method may further include forming a connecting member 30 electrically connecting the flexible display panel 10 and the circuit board (not shown) on one side of the lower substrate 100 in the second flat area FA2. .

Meanwhile, in the flexible display panel 10 according to an exemplary embodiment, the first column spacer CS1 is the upper substrate of the first flat area FA1, the second flat area FA2, and the bending area BA. ( 200 , 400 ), and the second column spacer CS2 may be disposed on the inner surface of the lower substrate 300 in the bending area BA. Although not shown, the first column spacer CS1 is disposed on the inner surface of the lower substrate 100 or 300 in the first flat area FA1, the second flat area FA2, and the bending area BA, and The column spacer CS2 may be disposed on the inner surface of the upper substrate 400 in the bending area BA. Both the first column spacer CS1 and the second column spacer CS2 may be disposed in the bending area BA, and the first column spacer CS1 and the second column spacer CS2 may overlap each other. there is. As the first column spacer CS1 and the second column spacer CS2 are formed to overlap each other in the bending area BA, the upper substrate 400 and the lower substrate 300 in the bending area BA are bent or folded. It has the effect of preventing shifting when losing.

4 is a cross-sectional view of the flexible display panel 15 according to another exemplary embodiment of the present invention. The flexible display panel 15 shown in FIG. 4 is substantially the same as the flexible display panel 10 described above, and further includes an upper polyimide substrate 250 and a lower polyimide substrate 150 . The upper polyimide substrate 250 may be disposed on the inner surface of the upper substrate 200 in the first and second flat areas FA1 and FA2 and on the inner surface of the upper substrate 400 in the bending area BA. can The lower polyimide substrate 150 may be disposed on the inner surface of the lower substrate 100 in the first flat area FA1 and the second flat area FA2 and on the inner surface of the lower substrate 300 in the bending area BA. can As the upper polyimide substrate 250 and the lower polyimide substrate 150 are further provided, the bending or folding characteristics of the flexible display panel 15 in the bending area BA can be further reinforced. There is an effect of securing high reliability by supporting the flat area FA1 and the second flat area FA2.

5 is a diagram illustrating a flexible display panel 25 according to another exemplary embodiment of the present invention. The present embodiment has, for example, a display panel shape in which both sides are bent, and can be applied to a mid- to large-sized display device such as a monitor or a television.

The flexible display panel 25 according to another exemplary embodiment of the present invention will be described in more detail. Referring to FIG. 5 , the third flat area FA3 is composed of the upper substrate 2000 and the lower substrate 1000, and the first bending area BA1 and the second bending area BA2 are the upper substrate 4000. and a lower substrate 3000. In this case, when the flexible display panel 25 is implemented as a liquid crystal display device, a liquid crystal layer 6000 may be interposed between the upper substrates 2000 and 4000 and the lower substrates 1000 and 3000, but is not limited thereto. The flexible display panel 25 can be applied to other types of display panels such as an organic light emitting diode display panel and a quantum dot display panel. Hereinafter, in one embodiment of the present invention, an example implemented as a liquid crystal display panel will be described.

The upper substrate 2000 and the lower substrate 1000 of the third flat area FA3 may be formed of glass substrates. The upper substrate 4000 and the lower substrate 3000 of the first bending area BA1 and the second bending area BA2 may be formed of a flexible material such as transparent resin. Encapsulation layers 5000 for encapsulating the liquid crystal layer 6000 are formed at both ends of the flexible display panel 25, and the third polarizer 8000 is formed on the outer surfaces of the upper substrates 2000 and 4000 of the flexible display panel 25. ) and the fourth polarizer 7000 may be disposed on outer surfaces of the lower substrates 1000 and 3000 of the flexible display panel 25 .

A manufacturing method of the flexible display panel 25 according to another exemplary embodiment of the present invention will be described with reference to FIGS. 6A to 6G . 6A to 6G are cross-sectional views illustrating a manufacturing method of the flexible display panel shown in FIG. 5 . Referring to FIG. 6A , an upper substrate 2000 and a lower substrate 1000 formed of a transparent glass substrate, a liquid crystal layer 6000 interposed between the upper substrate 2000 and the lower substrate 1000, and an inner side of the upper substrate 2000 A liquid crystal display panel in which a third column spacer CS3 located on the surface, a fourth column spacer CS4 located on the inner surface of the lower substrate 1000, and an encapsulation layer 5000 sealing the liquid crystal layer 6000 on both sides are formed ( 25'). Also, a step of defining the third flat area FA3, the first bending area BA1 and the second bending area BA2 of the liquid crystal display panel 25' is included.

In this embodiment, the liquid crystal display panel 25' has been described as an example, but is not limited thereto. In addition to the liquid crystal display panel 25', a step of preparing a flat display panel such as an organic light emitting diode display panel or a quantum dot display panel including an upper substrate and a lower substrate formed of a glass substrate may be included.

6B to 6C , in order to form the third flat area FA3, the first bending area BA1 and the second bending area BA2 of the liquid crystal display panel 25', the first bending area ( BA1) and the third flat area FA3, and cutting the upper substrate 2000 at the border between the second bending area BA2 and the third flat area FA3 (primary GLS Scribe). . Subsequently, a laser lift off (LLO) process (first partial LLO) is partially performed on the cut upper substrate 2000 in the first bending area BA1 and the second bending area BA2, A step of removing the upper substrate 2000 in the first bending area BA1 and the second bending area BA2 is included.

6D to 6G , the first bending area BA1 and the second bending area BA2 from which the upper substrate 2000 is removed, and the encapsulation layer 5000 positioned on both sides of the liquid crystal display panel 25' ) may include forming the upper substrate 4000 using a flexible material such as transparent resin to surround the side surface of the upper substrate 4000 . At this time, the upper substrate 4000 formed on the side surfaces of the first bending area BA1 , the second bending area, and the encapsulation layer 5000 may have a '┏' or '┓' shape. As shown in FIG. 6E , the lower substrate 1000 includes a boundary between the first bending area BA1 and the third flat area FA3 and a boundary between the second bending area BA2 and the third flat area FA3. It includes the step of cutting (secondary GLS Scribe). Subsequently, a laser lift off (LLO) process (second partial LLO) is partially performed on the cut lower substrate 1000 in the first bending area BA1 and the second bending area BA2, A step of removing the lower substrate 1000 of the first bending area BA1 and the second bending area BA2 is included. As a next step, as shown in FIG. 6F, the lower substrate 3000 is formed by using a flexible material such as transparent resin in the first bending area BA1 and the second bending area BA2 from which the lower substrate 1000 is removed. Formation may be included. Meanwhile, as shown in FIG. 6G , the outer surfaces of the upper substrate 4000 in the first and second bending areas BA1 and BA2 and the upper substrate 2000 in the third flat area FA3 are provided. 3 polarizers 8000 may be disposed. The fourth polarizer 7000 is disposed on outer surfaces of the lower substrate 3000 in the first and second bending areas BA1 and BA2 and the lower substrate 1000 in the third flat area FA3. steps may be included.

Meanwhile, in the flexible display panel 25 according to another exemplary embodiment of the present invention, the third column spacer CS3 includes the first bending area BA1, the second bending area BA2, and the third flat area FA3. ) may be disposed on the inner surface of the upper substrate 4000 or 2000, and the fourth column spacer CS4 may be disposed on the inner surface of the lower substrate 3000 in the first bending area BA1 and the second bending area BA2. there is. Although not shown, the third column spacer CS3 is disposed on inner surfaces of the lower substrates 3000 and 1000 in the first bending area BA1, the second bending area BA2, and the third flat area FA3. The fourth column spacer CS4 may be disposed on the inner surface of the upper substrate 4000 in the first bending area BA1 and the second bending area BA2 . Both the third column spacer CS3 and the fourth column spacer CS4 may be disposed in the first bending area BA1 and the second bending area BA2, and the third column spacer CS3 and the fourth column spacer may be disposed. (CS4) may be formed to overlap each other. As the third column spacer CS3 and the fourth column spacer CS4 are formed to overlap each other in the first bending area BA1 and the second bending area BA2, the first bending area BA1 and the second bending area BA2 are formed to overlap each other. When the upper substrate 4000 and the lower substrate 3000 of BA2 are bent or folded, shifting may be prevented.

7 is a cross-sectional view of a flexible display panel 35 according to another exemplary embodiment of the present invention. The flexible display panel 35 shown in FIG. 7 is substantially the same as the flexible display panel 25 described above, and further includes an upper polyimide substrate 2500 and a lower polyimide substrate 1500 . The upper polyimide substrate 2500 is formed on the inner surface of the upper substrate 4000 in the first and second bending areas BA1 and BA2 and the inner surface of the upper substrate 2000 in the third flat area FA3. can be placed. The lower polyimide substrate 1500 is formed on the inner surfaces of the lower substrate 3000 in the first and second bending areas BA1 and BA2 and the inner surface of the lower substrate 1000 in the third flat area FA3. can be placed. As the upper polyimide substrate 2500 and the lower polyimide substrate 1500 are further provided, the first bending area BA1 and the second bending area BA2 of the flexible display panel 35 are bent or folded. The characteristics can be further reinforced, and high reliability can be secured by supporting the third flat area FA3.

The above description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. Therefore, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed by the claims below, and all techniques within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10, 15, 25, 35: flexible display panel 10', 25': liquid crystal display panel
100, 1000, 300, 3000: lower substrate
200, 2000, 400, 4000: upper substrate
FA1: First flat area FA2: Second flat area
FA3: Third flat area BA: Bending area
BA1: first bending area BA2: second bending area

Claims (20)

a lower substrate including a first flat area, a second flat area, and a bending area positioned between the first flat area and the second flat area; and
Including an upper substrate facing the lower substrate,
The upper substrate and the lower substrate are formed of glass substrates,
The flexible display panel of claim 1 , wherein bending regions of the upper substrate and the lower substrate are formed of flexible transparent resin from which the glass substrate is removed. According to claim 1,
a first display unit disposed on the first flat area;
a second display unit disposed in the second flat area;
a third display unit disposed in the bending area; and
Further comprising a driving circuit unit for driving the first display unit, the second display unit, and the third display unit;
The flexible display panel of claim 1 , wherein the driving circuit unit is disposed on at least one side of each of the first display unit and the second display unit, and the driving circuit unit is not disposed on a side surface of the third display unit. According to claim 1,
first column spacers disposed on inner surfaces of the upper substrate in the first flat area, the second flat area, and the bending area; and
a second column spacer disposed on an inner surface of the lower substrate in the bending region;
The first column spacer and the second column spacer overlap in the bending area. According to claim 1,
first column spacers disposed on inner surfaces of the lower substrate of the first flat area, the second flat area, and the bending area; and
a second column spacer disposed on an inner surface of the upper substrate in the bending region;
The first column spacer and the second column spacer overlap in the bending area. According to claim 1,
a first polarizer disposed on outer surfaces of the upper substrate in the first flat area, the second flat area, and the bending area; and
and a second polarizer disposed on an outer surface of the lower substrate in the first flat area, the second flat area, and the bending area. According to claim 1,
a first polyimide substrate disposed on inner surfaces of the upper substrate in the first flat area, the second flat area, and the bending area; and
and a second polyimide substrate disposed on inner surfaces of the lower substrate of the first flat area, the second flat area, and the bending area. According to claim 1,
a liquid crystal layer interposed between the upper substrate and the lower substrate of the first flat area, the second flat area, and the bending area; and
The flexible display panel further comprises an encapsulation layer encapsulating the liquid crystal layer. a lower substrate including a first bending area, a second bending area, and a flat area positioned between the first bending area and the second bending area; and
Including an upper substrate facing the lower substrate,
The upper substrate and the lower substrate are formed of glass substrates,
The first bending area and the second bending area of the upper substrate and the lower substrate are formed of a flexible transparent resin from which the glass substrate is removed. According to claim 8,
The flexible display panel further includes a liquid crystal layer interposed between the upper and lower substrates of the first bending area, the second bending area, and the flat area, and an encapsulation layer encapsulating the liquid crystal layer. According to claim 9,
An upper substrate of the first bending area and the second bending area is formed to surround a side surface of the encapsulation layer. According to claim 8,
a third column spacer disposed on inner surfaces of the upper substrate of the first bending area, the second bending area, and the flat area; and
a fourth column spacer disposed on inner surfaces of the lower substrate of the first bending region and the second bending region;
The third column spacer and the fourth column spacer overlap each other in the first bending area and the second bending area. According to claim 8,
a third column spacer disposed on inner surfaces of the lower substrate of the first bending area, the second bending area, and the flat area; and
a fourth column spacer disposed on inner surfaces of the upper substrate of the first bending region and the second bending region;
The third column spacer and the fourth column spacer overlap each other in the first bending area and the second bending area. According to claim 8,
a third polarizer disposed on an outer surface of the upper substrate in the first bending area, the second bending area, and the flat area; and
and a fourth polarizer disposed on an outer surface of the lower substrate of the first bending area, the second bending area, and the flat area. According to claim 8,
a third polyimide substrate disposed on inner surfaces of the upper substrate in the first bending area, the second bending area, and the flat area; and
and a fourth polyimide substrate disposed on inner surfaces of the lower substrate of the first bending area, the second bending area, and the flat area. preparing a flat panel display panel in which an upper substrate and a lower substrate are formed of glass substrates;
defining the flat panel display panel as a first flat area, a second flat area, and a bending area positioned between the first flat area and the second flat area;
cutting the upper substrate and the lower substrate at a boundary between the first flat region and the bending region and at a boundary between the second flat region and the bending region;
removing the cut upper substrate and the cut lower substrate by partially performing a laser lift off process on the cut upper substrate and the cut lower substrate; and
and forming an upper substrate and a lower substrate in the bending area with flexible transparent resin at locations where the cut upper substrate and the cut lower substrate are removed. According to claim 15,
disposing first column spacers on inner surfaces of the upper substrate in the first flat area, the second flat area, and the bending area; and
Disposing a second column spacer on an inner surface of the lower substrate in the bending region;
The method of claim 1 , wherein the first column spacer and the second column spacer overlap each other in the bending area. preparing a flat panel display panel in which an upper substrate and a lower substrate are formed of glass substrates;
defining the flat panel display panel as a first bending area, a second bending area, and a flat area positioned between the first bending area and the second bending area;
cutting the upper substrate at a boundary between the first bending region and the flat region and at a boundary between the second bending region and the flat region;
removing the cut upper substrate by partially performing a laser lift off process on the cut upper substrate;
forming upper substrates of the first bending area and the second bending area with a flexible transparent resin at a position where the cut upper substrate is removed;
cutting the lower substrate at a boundary between the first bending area and the flat area and at a border between the second bending area and the flat area;
removing the cut lower substrate by partially performing a laser lift off process on the cut lower substrate; and
and forming lower substrates of the first bending area and the second bending area with flexible transparent resin at a location where the cut lower substrate is removed. 18. The method of claim 17,
forming a liquid crystal layer between the first bending area, the second bending area, and the upper substrate and the lower substrate of the flat area, and forming an encapsulation layer to encapsulate the liquid crystal layer; manufacturing method. According to claim 18,
The method of manufacturing the flexible display panel further comprising forming an upper substrate of the first bending area and the second bending area to surround a side surface of the encapsulation layer. 18. The method of claim 17,
disposing a third column spacer on inner surfaces of the upper substrate of the first bending area, the second bending area, and the flat area;
disposing a fourth column spacer on inner surfaces of the lower substrate of the first bending area and the second bending area; and
The method of claim 1 , wherein the third column spacer and the fourth column spacer overlap each other in the first bending area and the second bending area.

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