KR102042149B1 - Flexible display device and method of manufacturing the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a method for manufacturing the same. In particular, the force generated by bending the flexible panel can be prevented from being transmitted to the driving unit and the flexible printed circuit board bonded to the pad portion of the flexible panel. It is a technical problem to provide a flexible display device and a method of manufacturing the same. To this end, the flexible display device may include a flexible panel including a display area in which pixels are formed and a non-display area and a pad part formed outside the display area; A driving unit bonded to the pad unit and configured to drive the pixels; And a flexible printed circuit board bonded to an end of the pad part and configured to supply a signal to the driving part, wherein the pad part includes a link part in which gate lines and data lines connecting the driver part and the pixels are formed. ; And a bonding portion protruding from the link portion and to which the flexible printed circuit board and the driving portion are bonded.

Description

FLEXIBLE DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a manufacturing method thereof, and more particularly to a flexible display device and a manufacturing method thereof.

Flexible display devices are attracting attention as next-generation displays because pixel cells are embodied on thin flexible substrates such as plastics, so that they can display a desired image even when folded or rolled like paper. And R & D is in progress.

The flexible display device may include a flexible liquid crystal display device, a flexible plasma display device, a flexible organic light emitting display device, and a flexible electrophoretic display device. electrophoretic display devices, or flexible electro-wetting display devices.

Among the flexible display devices, in particular, the organic light emitting display device has a high response speed of 1 ms or less, low power consumption, and can emit light by itself, thus attracting attention as a next-generation flexible display device. I am getting it.

1 is an exemplary view schematically illustrating a plane and a side surface of a general flexible display device.

A flexible display device currently being developed is a small and medium sized terminal of a tablet PC, and the flexible display device includes a flexible panel 10 and a driver 40 bonded to the flexible panel as shown in FIG. 1. And a flexible printed circuit board 50 attached to the flexible panel to connect an external system to the driving unit 40.

First, the flexible panel 10 includes a lower substrate and an upper substrate that are opposed to each other, and may be, in particular, a flexible organic light emitting panel.

The lower substrate is made of a thin flexible substrate such as plastic. The lower substrate includes a display area A including a plurality of pixels for displaying an image, a non-display area B surrounding the display area, and a pad part C provided in any one of the non-display areas.

In the display area A, a gate line and a data line defining the pixel cross each other, and a thin film transistor TFT is formed in an area where the gate line and the data line cross each other, and are connected to the thin film transistor. Pixel electrodes are formed in the pixels.

The upper substrate is made of a thin and transparent flexible substrate such as plastic, and is formed to have a relatively smaller area than the lower substrate. The upper substrate is opposed to the remaining portion of the lower substrate except for the pad portion C by a bonding member (not shown) formed in a closed loop shape in the non-display area of the lower substrate.

That is, the flexible panel 10 illustrated in FIG. 1 shows a state in which the upper substrate and the lower substrate are bonded to each other, and a portion corresponding to the display area A is the upper substrate. A portion including the display area A, the non-display area B, and the pad part C is the lower substrate.

On the other hand, when the flexible panel 10 is a flexible organic light emitting panel, the flexible panel 10 may be a polarizing film, a barrier film, an encap, an organic light emitting diode (OLED), or a thin film transistor (TFT). It is composed of a lower substrate (PI) and a back plate (Back Plate) and the like, the thickness of the flexible organic light emitting panel is produced to about 500㎛.

Next, the driver 40 is bonded to the pad part C of the lower substrate to supply signals to gate lines and data lines formed in the display area A. FIG.

The driver 40 may be formed of an integrated circuit IC and then bonded to the pad part C using an anisotropic conductive film ACF. That is, the driving part 40 may be bonded to the pad part C in the form of chip on glass (COF).

Finally, the flexible printed circuit board 50 is for transmitting timing signals and image data transmitted from an external system to the driving unit 40, as shown in FIG. 1. An anisotropic conductive film (ACF) interposed between the flexible printed circuit board 50 is bonded to the pad part C of the flexible panel 10.

That is, electrical contact between the flexible printed circuit board 50, the driver 40, and the flexible panel 10 is made through the anisotropic conductive film (ACF).

In the conventional flexible display device configured as described above, as illustrated in FIG. 1, the flexible display device may be bent to both left and right sides with respect to the flexible printed circuit board 50 and the driver 40.

In this case, the flexible panel 10 tries to maintain a curved surface, but the flexible printed circuit board 50 and the driving unit 40 bonded to the flexible panel 10 try to maintain a flat state.

The conflicting equilibrium as described above occurs most at the end region of the flexible printed circuit board (FPC) 50. Due to this force imbalance, both ends D of the flexible printed circuit board 50 to be bonded are separated from the pad portion C of the flexible panel 10, as shown in FIG. Can be. In this case, communication cannot be normally performed between the flexible printed circuit board 50 and the driver 40.

In addition, the above-described phenomenon may occur in the driver 40, in which case, between the driver 40 and the flexible printed circuit board 50 and between the driver 40 and the pixels. Communication cannot be made normally.

Therefore, the flexible display device in which the above-described defects are found at the time of manufacture is separated into defects.

In addition, although the above-described separation phenomenon does not occur during manufacturing, when the flexible display device continuously uses the bending process as described above when the flexible display device is used by a general user, the above separation phenomenon This may occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and the flexible display, which can block the force generated by the bending of the flexible panel from being transmitted to the driving unit and the flexible printed circuit board bonded to the pad portion of the flexible panel. It is a technical problem to provide an apparatus and its manufacturing method.

According to an aspect of the present invention, there is provided a flexible display device including: a flexible panel including a display area in which pixels are formed and a non-display area and a pad part formed outside the display area; A driving unit bonded to the pad unit and configured to drive the pixels; And a flexible printed circuit board bonded to an end of the pad part and configured to supply a signal to the driving part, wherein the pad part includes a link part in which gate lines and data lines connecting the driver part and the pixels are formed. ; And a bonding portion protruding from the link portion and to which the flexible printed circuit board and the driving portion are bonded.

According to an aspect of the present invention, there is provided a method of manufacturing a flexible display device, including: manufacturing a flexible panel including a display area in which pixels are formed, a non-display area formed outside the display area, and a pad part; ; And a link part formed by cutting the pad part to form gate lines and data lines connecting the driving part and the pixels, and protruding from the link part, wherein the flexible printed circuit board and the driving part are bonded to each other. Separating into negatives.

According to the present invention, since the force generated by the bending of the flexible panel can be prevented from being transmitted to the driving unit and the flexible printed circuit board bonded to the pad portion of the flexible panel, the driving unit and the flexible printed circuit board Reliability can be improved.

1 is an exemplary view schematically illustrating a plane and a side surface of a general flexible display device.
2 is an exemplary view illustrating a plane of a flexible display device according to a first exemplary embodiment of the present invention.
3 is an exemplary view showing a side of a flexible display device according to the present invention.
4 is an exemplary view illustrating a plane of a flexible display device according to a second exemplary embodiment of the present invention.

Hereinafter, a flexible display device and a method of manufacturing the same according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating a plane of a flexible display device according to a first exemplary embodiment of the present invention. FIG. 3 is an exemplary view illustrating a side of a flexible display device according to an exemplary embodiment of the present invention. FIG. 3 is an exemplary view showing a view of the flexible panel 100 in the E direction shown in FIG.

In the flexible display device according to the first exemplary embodiment of the present invention, as illustrated in FIG. 2, a display area A in which the pixels 111 are formed and a non-display area formed outside the display area A are provided. (112, 113, 114), the flexible panel 100 including the pad portion 150 formed outside the display area (A), the pad portion 150 is bonded to the pixels 111 It is bonded to the end of the drive unit 400 and the pad unit 150 for driving, and includes a flexible printed circuit board 500 for supplying a signal to the drive unit (400).

First, the driving unit 400 will be described as follows.

After the driving unit 400 is formed of an integrated circuit (IC), as shown in FIG. 3, the driving unit 400 may be bonded to the pad unit 150 using the anisotropic conductive film (ACF) 600 or the like. That is, the driving unit 40 may be bonded to the pad unit 150 in the form of chip on glass (COF). However, the driving part 400 may be formed directly on the pad part 150 during the process of forming the organic light emitting diode.

The driver 400 is used to drive the flexible panel 100 by supplying signals to gate lines and data lines formed in the display area A. The timing controller, the gate driver, and the data driver may be used to drive the flexible panel 100. Function can be performed.

The timing controller receives timing signals, such as a data enable signal (DE) and a dot clock (CLK), from the external system to control signals (GCS) for controlling the operation timing of the data driver and the gate driver. , DCS). The timing controller rearranges the input image data input from the external system and outputs the rearranged image data to the data driver.

The data control signal DCS includes a source shift clock SSC, a source start pulse SSP, a polarity control signal POL, a source output enable signal SOE, and the like.

As described above, the gate control signal GCS includes a gate start pulse GSP, a gate shift clock GSC, a gate output enable signal GOE, or a start signal according to a configuration of a gate driver. VST) and gate clock GCLK.

The data driver converts the image data input from the timing controller into an analog data voltage, and supplies a data voltage of one horizontal line to the data lines every horizontal period in which a scan signal is supplied to the gate line. That is, the data driver converts the image data into a data voltage by using gamma voltages supplied from a gamma voltage generator (not shown) and outputs the data voltages to the data lines.

The data driver generates a sampling signal by shifting a source start pulse (SSP) from the timing controller according to a source shift clock (SSC). The data driver latches the pixel data RGB (image data) input according to the source shift clock SSC according to a sampling signal, converts the pixel data into a data voltage, and then turns on the source output. The data voltage is supplied to the data lines in units of horizontal lines in response to an enable (SOE) signal.

To this end, the data driver may include a shift register unit, a latch unit, a digital analog converter, an output buffer, and the like.

The gate driver shifts a gate start pulse (GSP) transmitted from the timing controller according to a gate shift clock (GSC), thereby sequentially applying a gate-on voltage (Von) to the gate lines. Supply a scan signal. The gate driver supplies the gate-off voltage Voff to the gate lines GL1 to GLn for the remaining periods during which the scan signal of the gate-on voltage Von is not supplied.

That is, the driver 400 performs the functions of the timing controller, the data driver and the gate driver. However, the driver 400 may be configured to perform at least one function of the three components.

Next, the flexible printed circuit board 500 will be described.

The flexible printed circuit board 500 is to transmit timing signals and image data transmitted from the external system to the driving unit 400, and is disposed between the flexible panel 100 and the flexible printed circuit board 500. An anisotropic conductive film (ACF) 600 inserted therein is bonded to the pad part 150 of the flexible panel 100.

The flexible printed circuit board 500 includes components for transmitting various timing signals transmitted from the external system (not shown) to the driver 400.

As described above, electrical contact with the flexible printed circuit board 500, the driver 400, and the flexible panel 100 may be made through the anisotropic conductive film (ACF).

Lastly, the flexible panel 100 will be described.

The flexible panel 100 may be various kinds of panels capable of bending. In particular, in the following description, the present invention will be described as an example in which the flexible panel 100 is a flexible organic light emitting panel applied to a flexible organic light emitting display device among the flexible display devices. The flexible panel 100 may include a back plate and a second substrate 110 formed on the bottom surface of the first substrate 140 and the second substrate 110 and the first substrate 140 which are opposed to each other. It is comprised including the optical film adhered to an upper surface.

First, the first substrate 140 is a flexible substrate, and may be made of a plastic material or a metal foil. That is, since the first substrate 140 is formed of a flexible material, it may be bent as shown in FIG. 4.

For example, the first substrate 140 made of plastic is made of any one of polyimide (PI), polycarbonate (PC), polynorborneen (PNB), polyethyleneterephthalate (PET), polyethylenapthanate (PEN), and polyethersulfone (PES). Can be done.

A plurality of pixels 111 to be described below are formed in the display area A of the first substrate 140.

Second, the second substrate 110 is made of a transparent plastic material, and is formed to have a relatively smaller area than the first substrate 140. The second substrate 110 is opposed to the first substrate 140 by a bonding member (not shown) formed in a closed loop in a non-display area of the first substrate 140.

The bonding member opposes the first substrate 140 and the second substrate 120, and bonds the organic light emitting diode OLED formed on the first substrate 140 with external moisture or oxygen. In order to protect, the space between the first substrate 140 and the second substrate 110 is sealed.

That is, the second substrate 110 may perform a function of an encapsulation substrate (encap) for sealing the first substrate 140.

Third, the back plate is formed on the bottom surface of the first substrate 140 to prevent foreign matter from adhering to the bottom surface of the first substrate 140, and the display area A of the first substrate 140. In this case, the light emitted from the first substrate 140 may be prevented from traveling in the lower direction of the first substrate 140.

That is, the first substrate 140 undergoes a process of forming a pixel driving circuit as described above in a state of being mounted on a main substrate such as a glass substrate, and after being bonded to the second substrate 110, the main substrate Separated from the substrate. In this case, adhesive materials may be present on the bottom surface of the first substrate 140 attached to the main substrate, and foreign substances may be easily attached by the adhesive materials.

Therefore, the back plate is attached to the bottom surface of the first substrate 140 separated from the main substrate. The back plate may be formed in a plate form such as plastic, or may be formed in a film form.

Fourth, the optical film is formed to have a function such as anti-reflection to prevent the reflection of polarized light and / or external light, and is attached to the upper surface of the second substrate (110). The optical film may be omitted.

Fifth, the display area A includes a plurality of gate lines (not shown), a plurality of data lines (not shown), a plurality of driving power lines (not shown), a plurality of pixels (not shown), and a plurality of pixels. Cathode power lines (not shown) are formed.

Each of the plurality of gate lines is formed at regular intervals to intersect with each of the plurality of data lines, and each of the plurality of driving power lines is parallel with each of the plurality of gate lines or the plurality of data lines. It is formed to.

Each of the plurality of pixels 111 is formed in an area defined by the crossing gate line and the data line, and displays an image according to a scan signal from the gate line and a data voltage from the data line.

The pixels 111 may include white (W) pixels, red (R) pixels, green (G) pixels, and blue (B) pixels. The arrangement of the pixels 111 may be variously changed. Each of the pixels 111 may output light having a unique color, or may output white light. In the latter case, the panel 100 may be provided with a color filter for outputting a white (W) color, a red (R) color, a green (G) color, and a blue (B) color.

Each of the pixels 111 is connected to an organic light emitting diode OLED, a data line DL, and a gate line GL, as shown in the enlarged circle 1 of FIG. 2. At least two transistors (T1, T2) for controlling the OLED).

The anode electrode of the organic light emitting diode OLED is connected to the first power source VDD, and the cathode electrode is connected to the second power source VSS. The organic light emitting diode OLED generates light having a predetermined luminance in response to a current supplied from the second transistor T2.

Various circuits formed in the pixel 111 may be supplied to the organic light emitting diode OLED in response to a data voltage supplied to the data line DL when a scan signal is supplied to the gate line GL. Control the amount of current. To this end, the pixel 111 includes a second transistor T2 (driving transistor) connected between a first power supply VDD and the organic light emitting diode, the second transistor T2 and the data line DL. A storage capacitor Cst connected between the first transistor T1 (switching transistor) and the gate electrode of the second transistor T2 and the organic light emitting diode OLED connected between the gate line GL. do.

The transistor may be a thin film transistor (a-Si TFT), a poly-Si TFT, an oxide TFT, an organic TFT, or the like.

In addition, the pixel 111 may further include at least one compensation transistor and at least one compensation capacitor for compensating the threshold voltage of the driving transistor T2.

Sixth, the non-display areas 112, 113, and 114 are provided outside the display area A to surround the display area A. FIG. The non-display area may be defined as an area overlapping an edge portion of the second substrate 110. That is, as described above, a bonding member (not shown) formed in a closed loop shape is applied to an edge portion of the second substrate 110, and the second substrate 110 and the first substrate are formed by the bonding member. 140 is bonded. An inner side of the bonding member of the flexible panel 100 corresponds to the display area A, and an outer portion of the bonding member corresponds to the non-display area.

Seventh, the pad part 150 is formed outside the display area A, similarly to the non-display area. That is, the pad part 150 is one of the non-display areas.

The pad part 150 is bonded to the driving part 400 for supplying the scan signal and the data voltage to the pixels 111 by using the anisotropic conductive film (ACF).

In addition, the pad unit 150 includes the components for transmitting various timing signals transmitted from the external system (not shown) to the driver 400, the flexible printed circuit board (FPC) 500. ) Is bonded using an anisotropic conductive film (ACF) or the like.

That is, the driving unit 400 is bonded to an area of the pad unit 150 that is adjacent to the display area A, and the flexible printed circuit board 500 is bonded to an outside of the pad unit 150. It is.

As illustrated in FIG. 2, the pad unit 150 to which the driving unit 400 and the flexible printed circuit board 500 are bonded, a gate line connecting the driving unit 400 and the pixels 111. And a bonding portion protruding from the link portion 120 and the link portion 120 on which the data lines 410 are formed, and to which the flexible printed circuit board 500 and the driving portion 400 are bonded. 130).

That is, the link unit 120 has wirings 410 connecting the driving unit 400 and the pixels 111, and the bonding unit 130 has the driving unit 400 and the flexible printed circuit board. 500 is bonded.

The bonding portion 130 and the link portion 120 are formed on the first substrate 140, and by cutting the outside of the bonding portion 130 from the first substrate 140, The bonding part 130 protruding from the link part 120 is formed.

That is, the bonding portion 130 is formed by partially cutting the outer portion of the first substrate 140 in which the bonding portion 130 is formed.

In this case, as shown in FIG. 2, the right edge 131 of the bonding portion 130 is adjacent to the right edge 121 of the link portion adjacent to the right edge 131 of the bonding portion and walks 0 degrees. The cutting process may be performed to achieve any one of larger and smaller angles than 90 degrees.

However, the outer edge of the bonding portion 130 may be cut so that the right edge 131 of the bonding portion 130 and the right edge 121 of the link portion are perpendicular to each other.

Therefore, the left edge of the bonding portion 130 may be cut to form any one of an angle greater than 0 degrees and less than 90 degrees with the left edge of the link portion adjacent to the left edge of the bonding portion. It may be cut so as to be perpendicular to each other.

The first cutting part 150 may be formed at the right side of the bonding part 130 and connected to the right side of the link part 120. That is, when the flexible panel 100 including the link unit 120 is bent in the direction of the arrow shown in FIG. 2, the force generated by the bending is bonded through the link unit 120. In order to prevent direct acting on the part 130, the first cutting part 150 may be formed in the first connection part 160.

The first cutout 150 may be formed in various shapes, but in particular, may be formed to extend from the right edge 131 of the bonding part 130. That is, the first cutout 150 may be formed to extend with the right edge 131 of the bonding part 130.

In addition, a second cutting part may be formed on the second connection part formed on the left side of the bonding part 130 and connected to the left side of the link part 120.

The second cut portion may be formed in various forms, but like the first cut portion 150, it may be formed to extend from the left edge of the bonding portion 130. That is, the second cutting portion may be formed to extend to the left edge of the bonding portion 130.

As described above, the flexible display device according to the first embodiment of the present invention includes the flexible panel 100, the driving unit 400, and the flexible printed circuit board 500, and the driving unit 400. And the flexible printed circuit board 500 is bonded to the pad part 150 formed at one end of the flexible panel 100.

When the flexible panel 100 is bent, at least one of the driving unit 400 or the flexible printed circuit board 500 may be separated from the pad unit 150 to prevent separation of the pad unit 150. ) Is separated into the link unit 120 and the bonding unit 130.

In addition, when the flexible panel 100 is bent, in order to prevent the force applied to the link unit 120 from being transmitted to the bonding unit 130, in the present invention, the pad unit 150 may be formed. It is formed in a form protruding from the link portion 120.

In addition, in order to maximize the function, the cutting portion 150 is formed in the connection portion 160 connecting the bonding portion 130 and the link portion 120, the cutting portion 150 is the bonding portion 130 It is formed in the form extending to the right or left edge of the).

4 is an exemplary view illustrating a plane of a flexible display device according to a second exemplary embodiment of the present invention.

In the flexible display device according to the second exemplary embodiment of the present invention, as illustrated in FIG. 4, a display area A in which the pixels 111 are formed and a non-display area formed outside the display area A are provided. (112, 113, 114), the flexible panel 100 including the pad portion 150 formed outside the display area (A), the pad portion 150 is bonded to the pixels 111 It is bonded to the end of the drive unit 400 and the pad unit 150 for driving, and includes a flexible printed circuit board 500 for supplying a signal to the drive unit (400).

In the following description, the same content as that described in the flexible display device according to the first embodiment of the present invention will be omitted or simply described.

That is, since the driving unit 400 and the flexible printed circuit board 500 perform the same functions as the driving unit and the flexible printed circuit board described in the first embodiment of the present invention, a detailed description thereof will be omitted.

In addition, the functions of the components excluding the pad unit 150 among the components constituting the flexible panel 100 are the same as the functions described above, and thus a detailed description thereof will be omitted.

Therefore, hereinafter, only the pad unit 150 applied to the flexible display device according to the second exemplary embodiment will be described in detail.

First, the pad part 150 is formed outside the display area A, similarly to the non-display area. That is, the pad part 150 is one of the non-display areas.

The pad part 150 is bonded to the driving part 400 for supplying the scan signal and the data voltage to the pixels 111 by using the anisotropic conductive film (ACF).

In addition, the pad unit 150 includes the components for transmitting various timing signals transmitted from the external system (not shown) to the driver 400, the flexible printed circuit board (FPC) 500. ) Is bonded using an anisotropic conductive film (ACF) or the like.

That is, the driving unit 400 is bonded to an area of the pad unit 150 that is adjacent to the display area A, and the flexible printed circuit board 500 is bonded to an outside of the pad unit 150. It is.

Second, the pad unit 150, to which the driving unit 400 and the flexible printed circuit board 500 are bonded, is connected to the driving unit 400 and the pixels 111, as shown in FIG. 4. Bonding from the link portion 120 and the link portion 120 where the gate lines and the data lines 410 are formed, and the flexible printed circuit board 500 and the driver 400 are bonded. The unit 130 is included.

That is, the link unit 120 has wirings 410 connecting the driving unit 400 and the pixels 111, and the bonding unit 130 has the driving unit 400 and the flexible printed circuit board. 500 is bonded.

The bonding portion 130 and the link portion 120 are formed on the first substrate 140, and by cutting the outside of the bonding portion 130 from the first substrate 140, The bonding part 130 protruding from the link part 120 is formed.

That is, the bonding portion 130 is formed by partially cutting the outer portion of the first substrate 140 in which the bonding portion 130 is formed.

In this case, as shown in FIG. 2, the right edge 131 of the bonding portion 130 is adjacent to the right edge 121 of the link portion adjacent to the right edge 131 of the bonding portion and walks 0 degrees. The cutting process may be performed to achieve any one of larger and smaller angles than 90 degrees.

However, the outer edge of the bonding portion 130 may be cut so that the right edge 131 of the bonding portion 130 and the right edge 121 of the link portion are perpendicular to each other.

Therefore, the left edge of the bonding portion 130 may be cut to form any one of an angle greater than 0 degrees and less than 90 degrees with the left edge of the link portion adjacent to the left edge of the bonding portion. It may be cut so as to be perpendicular to each other.

Third, a first hole 170 may be formed at the right side of the bonding unit 130 and connected to the right side of the link unit 120. That is, when the flexible panel 100 including the link unit 120 is bent in the direction of the arrow shown in FIG. 4, the force generated by the bending is bonded through the link unit 120. The first hole 170 may be formed in the first connection portion 160 to prevent direct acting on the portion 130.

That is, since the link unit 120 and the bonding unit 130 are separated by the first hole 170, a force acting on the link unit 120 by the bending is applied to the bonding unit 130. Is not passed directly).

The first hole 170 may be formed in various forms including a circle. In particular, the first hole 170 may have a right edge 131 of the bonding portion 130 and a right side of the link portion 120 adjacent to the right edge 131 of the bonding portion 130. The edge 121 may be formed in the form of a circle having a center point.

In addition, a second hole may be formed in the second connection part formed on the left side of the bonding part 130 and connected to the left side of the link part 120.

The second hole may be formed in various forms. Like the first hole 170, the second hole is adjacent to the left edge of the bonding portion 130 and the left edge of the bonding portion 130. The left edge of the link unit 120 may be formed in the form of a circle having a center point.

As described above, the flexible display device according to the second exemplary embodiment of the present invention includes the flexible panel 100, the driving unit 400, and the flexible printed circuit board 500, and the driving unit 400. And the flexible printed circuit board 500 is bonded to the pad part 150 formed at one end of the flexible panel 100.

When the flexible panel 100 is bent, at least one of the driving unit 400 or the flexible printed circuit board 500 may be separated from the pad unit 150 to prevent separation of the pad unit 150. ) Is separated into the link unit 120 and the bonding unit 130.

In addition, when the flexible panel 100 is bent, in order to prevent the force applied to the link unit 120 from being transmitted to the bonding unit 130, in the present invention, the pad unit 150 may be formed. It is formed in a form protruding from the link portion 120.

In addition, in order to maximize the function, a hole 170 is formed in the connection portion 160 connecting the bonding portion 130 and the link portion 120, and the hole 170 is the bonding portion 130. ) Is formed in the form of a circle having a center point at a point where the right or left edge of the c) and the right or left edge of the link part 120 meet.

Meanwhile, the method of manufacturing the flexible display device according to the present invention as described above is briefly described as follows.

First, the display area A in which the pixels 111 are formed, the non-display areas 112, 113, and 114 formed outside the display area A, and the pad part 150 are included. The flexible panel 100 is manufactured.

Next, the link part 120 having the gate line and the data lines 410 connecting the driver 400 and the pixels 111 by cutting the pad part 150 and the link is formed. The flexible printed circuit board 500 and the driving unit 400 are separated from each other by the bonding unit 130, which protrudes from the unit.

In this case, the bonding unit 130 and the link unit 120 may be separated after the flexible panel 100 is manufactured, or may be made before manufacturing the flexible panel 100.

That is, after the display area A and the non-display area are formed on the first substrate and the second substrate and the first substrate are bonded together, the area of the first substrate corresponding to the pad part 150 may be formed. By cutting a portion, the bonding portion 130 and the link portion 120 may be formed. Alternatively, after the display area A and the non-display area are formed on the first substrate on which the bonding part 130 and the link part 120 are separated, the second substrate and the first substrate are bonded together. May be

Finally, the method of manufacturing the flexible display device according to the first exemplary embodiment of the present invention includes: a first connector 160 formed on the right side of the bonding unit 130 and connected to the right side of the link unit 120. In the forming of the first cutting portion 150 extending from the right edge 131 of the bonding portion 130 and formed on the left side of the bonding portion 130, and the left side of the link portion 120 Forming a second cutout portion extending from a left edge of the bonding portion 130 to a second connection portion to be connected;

In addition, the method of manufacturing the flexible display device according to the second exemplary embodiment of the present invention may be formed on the right side of the bonding unit 130 and connected to the first connection unit 160 connected to the right side of the link unit 120. The center of the circle shape is a point where the right edge 131 of the bonding portion 130 and the right edge 121 of the link portion 120 adjacent to the right edge 131 of the bonding portion meet. Forming a first hole 170 and a second connection part formed at a left side of the bonding part 130 and connected to a left side of the link part 120, a left edge of the bonding part 130, And forming a circle-shaped second hole having a center point at a point where the left edge of the link unit 120 adjacent to the left edge of the bonding unit 130 meets.

Briefly summarized the present invention as described above is as follows.

The present invention is to improve the defect that the drive unit and the flexible printed circuit board bonded to the pad portion of the flexible panel is separated from the pad portion when the flexible panel is bent.

That is, when both sides of the flexible panel are bent, the driver part of the chip-on-glass (COG) type and the flexible printed circuit board bonded to the pad part by the anisotropic conductive film (ACF) are formed by the bending. The generated force may be concentrated so that the driving unit or the flexible printed circuit board may be separated from the pad unit. The present invention prevents the force generated by the bending from being transmitted to the driving unit or the flexible printed circuit board in order to prevent the separation phenomenon as described above.

To this end, in the present invention, the pad unit 150 formed in the flexible panel 100 is separated into the link unit 120 and the bonding unit 130, and the link unit 120 and the The bonding unit 130 is connected to each other through the connection unit 160.

The cutting portion 150 is formed in the connection portion 160 or the hole 170 is formed, so that the bending force acting on the link portion 120 is directly transmitted to the bonding portion 130. Can be prevented.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical matters of the present invention. It will be evident to those who have knowledge of.

100: flexible panel 150: pad portion
120: link portion 130: bonding portion
160: connection part 150: cutting part
170: hole 400: drive part
500: flexible printed circuit board 600: anisotropic conductive film (ACF)
112, 113, 114: Non-display area A: Display area

Claims (10)

A flexible panel including a display area in which pixels are formed, a non-display area and a pad part formed outside the display area;
A driving unit bonded to the pad unit and configured to drive the pixels; And
Bonded to the end of the pad portion, and includes a flexible printed circuit board for supplying a signal to the driver,
The pad unit,
A link unit in which gate lines and data lines connecting the driver and the pixels are formed; And
Protruding from the link portion, and includes a bonding portion bonded to the flexible printed circuit board and the driving portion,
The right edge of the bonding portion forms an angle between the right edge of the link portion adjacent to the right edge of the bonding portion and an angle greater than 0 degrees and smaller than 90 degrees.
The left edge of the bonding portion is one of an angle greater than 0 degrees and less than 90 degrees with a left edge of the link portion adjacent to the left edge of the bonding portion. delete The method of claim 1,
The first cutting part is formed on the right side of the bonding part and connected to the right side of the link part, and a first cutting part is formed.
The second display portion is formed on the left side of the bonding portion and is connected to the left side of the link portion. The method of claim 3, wherein
The first cut portion extends from the right edge of the bonding portion,
The second cutting portion extends from a left edge of the bonding portion. The method of claim 1,
A first hole is formed at the right side of the bonding portion and is connected to the right side of the link portion.
And a second hole is formed at a left side of the bonding portion and connected to a left side of the link portion. The method of claim 5,
The first hole is a circle having a center point at the point where the right edge of the bonding portion meets the right edge of the link portion adjacent to the right edge of the bonding portion.
And wherein the second hole has a central point where a left edge of the bonding portion meets a left edge of the link portion adjacent to the left edge of the bonding portion. delete Manufacturing a flexible panel including a display area in which pixels are formed, a non-display area formed outside the display area, and a pad part; And
The pad part is cut, and a driver unit for driving the pixels, a link unit where gate lines and data lines connecting the pixels are formed, and protrude from the link unit, and are flexible for supplying a signal to the driver unit. Separating the printed circuit board and the driving unit into a bonding unit to which the driving unit is bonded,
The right edge of the bonding portion forms an angle between the right edge of the link portion adjacent to the right edge of the bonding portion and an angle greater than 0 degrees and smaller than 90 degrees.
And a left edge of the bonding portion forms an angle between a left edge of the link portion adjacent to the left edge of the bonding portion and an angle greater than 0 degrees and less than 90 degrees. The method of claim 8,
Forming a first cutout portion formed at a right side of the bonding portion and extending from a right edge of the bonding portion to a first connection portion connected to a right side of the link portion; And
And forming a second cutout portion formed at a left side of the bonding portion and connected to a left side of the link portion, the second cutout portion extending from a left edge of the bonding portion. The method of claim 8,
A circle formed at a right side of the bonding portion, the first connecting portion being connected to the right side of the link portion, the center of the point where the right edge of the bonding portion and the right edge of the link portion adjacent to the right edge of the bonding portion meet; Forming a first hole of a shape; And
A circle formed at a left side of the bonding portion, the second connecting portion being connected to the left side of the link portion, and having a center point where a left edge of the bonding portion and a left edge of the link portion adjacent to the left edge of the bonding portion meet; A method of manufacturing a flexible display device, the method comprising: forming a second hole having a shape.

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