KR20170038338A - Display device - Google Patents

Abstract

A display device of the present invention comprises: a printed circuit substrate including a power supply unit and a timing control unit; at least one first chip on film (COF) having input pads connected to the printed circuit substrate; a display panel having at least one line on glass (LOG) connected to output pads of the first COF; and at least one second COF connected to the LOG. According to one embodiment of the present invention, it is possible to reduce the size of the printed circuit substrate by a second COF structure which is separated from the printed circuit substrate to receive a power and a control signal from the LOG of the display panel so as to reduce manufacturing cost, to mitigate limit of a design of the display device, and to mitigate COF damage of a curved or flexible display device at the same time.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device.

2. Description of the Related Art Various flat panel displays (FPDs) have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes. Such a flat panel display may be a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting diode (OLED) Display, and an electroluminescence device (ED).

An apparatus for displaying a desired image by adjusting the light transmittance of liquid crystal cells arranged in a matrix form in accordance with image signal information is provided with an image on a display panel using light emitted from a backlight unit. .

The display device using such a principle has a tendency of widening its application range due to features such as light weight, thinness, and low power consumption driving.

According to this trend, the display device is used in office automation equipment, audio / video equipment, and the like.

2. Description of the Related Art In recent years, a display device has been widely applied not only to a computer monitor, a television, a display device of a vehicle navigator system, and a portable display device such as a notebook computer or a mobile phone.

Typical display devices include a timing control unit, a printed circuit board (PCB) including a power supply circuit, and a plurality of COFs (Chip On Film) including a data driver for connecting the printed circuit board to the display panel .

A general display device has a limited product design depending on the length and size of the printed circuit board by a structure in which a plurality of COFs are connected along at least one side of a display panel and the other side of the plurality of COFs is connected to the printed circuit board .

Further, in realizing a curved display device and a flexible display device, a general display device has difficulty in improving COF damage due to a plurality of COFs and a structure of a printed circuit board connected to the plurality of COFs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device which reduces the size of a printed circuit board to reduce costs.

An object of the present invention is to provide a display device capable of improving the design limit of a display device.

An object of the present invention is to provide a display device capable of improving the COF damage of a curved display device and a flexible display device.

According to an aspect of the present invention, there is provided a display device including a printed circuit board including a power unit and a timing controller, at least one first chip on chip (COF) chip having input pads connected to the printed circuit board, ), At least one second COF connected to the LOG, and a display panel having at least one LOG (Line On Glass) connected to the output pads of the first COF. The embodiment reduces the size of the printed circuit board by reducing the size of the printed circuit board by the second COF structure which is separated from the printed circuit board and receives power and control signals from the LOG of the display panel, The COF damage of the display device or the flexible display device can be improved.

The display device according to the present invention includes a printed circuit board including a power supply unit and a timing control unit, at least one first COF directly connected to the display panel, and a plurality of first COFs spaced apart from the printed circuit board, 2 < / RTI > COF. The second COF may be separated from the printed circuit board by receiving the power and timing control signals from the display panel by the LOG. Therefore, the size of the printed circuit board can be reduced to reduce the manufacturing cost.

In addition, the embodiment can simplify the manufacturing process by omitting the process of connecting the printed circuit board and the second COF to each other by a structure in which they are separated from each other, It is possible to reduce the size of the second COF by reducing the number of parts, thereby reducing the manufacturing cost.

In the curved display device or the flexible display device according to the embodiment, the COF directly connected to the printed circuit board can be reduced and the damage of the COF can be reduced.

In addition, in the embodiment, in the case of a display device having various resolutions for each region, the second COF having a two-layer COF wiring structure capable of sufficiently securing the number of output pads is disposed. Therefore, in order to realize ultra- 2 COF is selectively adopted, so that the number of COFs is minimized, thereby reducing the manufacturing cost.

1 is a block diagram schematically showing a configuration of a display apparatus according to an embodiment of the present invention.
2 is a perspective view of a curved display device according to an embodiment of the present invention.
3 is a plan view showing a liquid crystal display panel, a printed circuit board, and first and second COFs according to an embodiment of the present invention.
4 is a plan view showing a second COF according to an embodiment of the present invention.
5 is a cross-sectional view showing a second COF cut along the line I-I 'in FIG.
6 is a diagram showing the resolution of the display area according to the first and second COFs according to the embodiment.
7 is a plan view showing a liquid crystal display panel, a printed circuit board, and a COF according to another embodiment.
8 is a plan view showing a liquid crystal display panel, a printed circuit board and a COF according to another embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

In the case where the word 'includes', 'having', 'done', etc. are used in this specification, other parts can be added unless '~ only' is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if a temporal posterior relationship is described by 'after', 'after', 'after', 'before', etc., 'May not be contiguous unless it is used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

1 is a block diagram schematically showing a configuration of a display apparatus according to an embodiment of the present invention.

1, a display device 100 according to an embodiment of the present invention may include a display panel 120, a timing controller 111, a data driver 20, and a gate driver 30.

Although the display device 100 of the embodiment has been described as a liquid crystal display (LCD), it is not limited thereto. For example, the display device of another example may be a field emission display (FED), a plasma display panel (PDP), an organic light emitting diode display (OLED), or an electrophoretic display (EPD).

The display panel 120 includes first and second glass substrates facing each other, and liquid crystal molecules disposed between the first and second glass substrates. The display panel 120 has a matrix structure of intersecting the data lines D1 to Dm and the gate lines G1 to Gn and has m × n (m, n is a positive integer) liquid crystal cells Clc ).

The first glass substrate of the display panel 120 includes m data lines D1 to Dm, n gate lines G1 to Gn, data lines D1 to Dm and n gate lines G1 (TFT), a liquid crystal cell Clc, a pixel electrode 1, and a storage capacitor Cst, which are respectively connected to the transistors (TFTs), which are located in an intersection region of the pixels G1 to Gn.

A black matrix, a color filter, and a common electrode 2 may be formed on the second glass substrate of the display panel 120. Here, the position of the common electrode 2 may be changed according to the liquid crystal driving method. For example, the common electrode 2 may be disposed on a second glass substrate in a vertical electric field driving mode such as a TN (Twisted Nematic) mode and a VA (Vertical Alignment) mode, and may be in an IPS (In Plane Switching) mode and an FFS The pixel electrode 1 may be disposed on the first glass substrate in a horizontal electric field driving mode such as a field switching mode.

The data driver 20 latches the digital video data RGB under the control of the timing controller 111 and converts the digital video data into an analog positive / negative gamma compensation voltage to generate a positive / negative data voltage And supplies the data voltage to the data lines D1 to Dm.

The gate driver 30 sequentially supplies gate signals having a pulse width of one horizontal period to the gate lines G1 to Gn by a control signal of the timing controller 111. [ The gate driver 30 can be formed directly on the first glass substrate simultaneously with the pixel array.

The timing controller 111 rearranges the digital video data (RGB) input from the external system in accordance with the display panel 120 and supplies the digital video data RGB to the data driver 20.

The timing controller 111 receives timing signals such as vertical / horizontal synchronizing signals (Vsync, Hsync), data enable (Data Enable), and clock signals (including main clock signals such as CLK and MCLK) from an external system And generates control signals for controlling the operation timings of the data driver 20 and the gate driver 30. [

The data timing control signal for controlling the data driver 20 includes a data start pulse (SSP), a source sampling clock (SSC), a polarity control signal (Pol) An SOE (Source Output Enable) signal, and the like. The data start pulse SSP controls the data sampling start timing of the data driver 20. [

The data sampling clock SSC is a clock signal that controls the sampling timing of data in the data driver 122 on the basis of the rising or falling edge. The data output enable signal SOE controls the output timing of the data driver 20. [ The polarity control signal (POL) controls the horizontal polarity inversion timing of the data voltage output from the data driver (20).

The gate timing control signal for controlling the gate driver 30 includes a gate start pulse (GSP), a gate shift clock (GSC), a gate output enable (GOE), and the like do.

FIG. 2 is a perspective view of a curved display device according to an embodiment of the present invention, and FIG. 3 is a plan view illustrating a liquid crystal display panel, a printed circuit board, and first and second COFs according to an embodiment of the present invention.

2 and 3, the curved display device according to the embodiment of the present invention may include an upper cover 10, a display panel 120, and a backlight unit 50. The curved display device may have a constant curvature along the major axis direction, but is not limited thereto. For example, the display device of the present invention may have a constant curvature in the minor axis direction, or may be a flexible display device.

The upper cover 10 may be configured to surround the edge of the display panel 120, but is not particularly limited. Although the embodiment has been described for limiting the upper cover 10 surrounding the upper edge of the display panel 120, the upper cover 10 may be omitted depending on the type of display device.

Although not shown in the drawings, the backlight unit 50 may include a plurality of optical sheets and a light source.

The display device of the embodiment may include a printed circuit board 110, a first COF (Chip On Film) 130 and a second COF 140 disposed on one side of the display panel 120.

The display panel 120 may include first and second glass substrates facing each other, and liquid crystal molecules interposed between the first and second glass substrates. The display panel 120 may employ the technical features of FIG.

The display panel 120 may include a gate driver 30 connected to the gate lines at the edge of the active area A / A. The gate driver 30 may include a level shifter (not shown), and a gate shift register. The gate driver 30 of the embodiment may be formed directly on the edge of the active region A / A by a gate in panel process, but the present invention is not limited thereto.

The first and second COFs 130 and 140 are connected to the edge of the active area A / A of the display panel 120 and the first and second LOGs LOG1 and LOG2 connected to the panel power line 130c. LOG2 may be disposed.

The first LOG (LOG1) is electrically connected to the output pad of the first COF 130 to supply power, digital video data, and timing control signals provided through the first COF 130 to an adjacent second COF (130) 140). ≪ / RTI > The first LOG (LOG1) of the embodiment may include a LOG power supply wiring 113a, a LOG gate control wiring 111a, and a LOG data control wiring 111b.

The second LOG (LOG2) is connected to the output pad of the first COF 130 to supply power, digital video data, and timing control signals provided through the first COF 130 to the adjacent second COF 140 As shown in FIG. The second LOG (LOG2) of the embodiment may include the LOG power supply wiring 113a and the LOG data control wiring 111b.

The printed circuit board 110 may include a power supply unit 113 and a timing controller 111.

The power source unit 113 may generate a power source voltage VDD, a base voltage VSS, a common voltage VCOM, a gate high voltage VGH, a gate low voltage VGL, and the like.

The timing controller 111 may generate digital video data and a timing control signal. The timing control signal includes a gate start pulse GSP, a gate shift clock GSC, a gate output enable signal GOE, a data start pulse SSP, a data sampling clock SSC, a polarity control signal Pol, A data output enable signal (SOE), or the like.

The printed circuit board 110 may be connected to the first COF 130. The printed circuit board 110 may include a substrate pad unit (not shown) directly connected to the first COF 130. Here, the second COF 140 may be directly connected to the display panel 120 at a predetermined distance from the printed circuit board 110. The second COF 140 may be separated from the printed circuit board 110. That is, the printed circuit board 110 is not directly connected to the second COF 140.

The first COF 130 may be disposed on one side of the display panel 120 and disposed between the printed circuit board 110 and the display panel 120. The first COF 130 may include a data driver IC 150. The first COF 130 may include input pads directly connected to the printed circuit board 150 and output pads directly connected to the display panel 120, although not illustrated in detail in the drawings. The first COF 130 may include COF wirings (not shown). The COF wiring may be formed on one surface of the first COF 130, but the present invention is not limited thereto. Although the embodiment is limited to a single COF 130, the present invention is not limited thereto, and the number of the first COFs 130 may be two or more.

The embodiment may include a first COF 130 directly connected to the printed circuit board 110 and the display panel 120 and a second COF 130 connected directly to the display panel 120 through the first and second LOGs LOG1 and LOG2. The structure of the second COF 140 separated from the printed circuit board 110 can improve the damage of the COF generated in the curved display device having the curvature in the major axis direction.

The second COF 140 will be described in detail with reference to FIGS. 4 and 5. FIG.

FIG. 4 is a plan view showing a second COF according to an embodiment of the present invention, and FIG. 5 is a sectional view showing a second COF cut along the line I-I 'of FIG.

3 to 5, the second COF 140 may be disposed on one side of the display panel 120 and spaced apart from the first COF 130 by a predetermined distance. The second COF 140 may be spaced apart from the printed circuit board 110 by a predetermined distance. The second COF 140 may include a data driver IC 150.

The second COF 140 may include a first output pad OP1, a second output pad OP2, a first LOG pad LOGP1, and a second LOG pad LOGP2.

The first output pads OP1 may be arranged in a direction in which the first output lines OL1 are arranged. The first output pad OP1 may be disposed in parallel with the second COF 140 in the major axis direction. The first output pad OP1 may be electrically connected to the first output wiring OL1. The first output pad OP1 and the first output wiring OL1 may be disposed on one side of the second COF 140. [

The second output pad OP2 may be arranged in a direction in which the second output wiring OL2 of the second COF 140 is arranged. The second output pad OP2 may be disposed closer to the end of the second COF 140 overlapped with the display panel 120 than the first output pad OP1. The first output pad OP1 and the second output pad OP2 may be arranged in a zigzag fashion. The first output pad OP1 and the second output pad OP2 may be staggered from each other. The second output pad OP2 may be electrically connected to the second output wiring OL2. The first output wiring OL1 may be disposed on one side of the second COF 140 and the second output wiring OL2 may be disposed on the other side of the second COF 140. [ That is, the first output wiring OL1 and the second output wiring OL @ may be disposed in different layers. The second output wiring OL2 electrically connects the output terminal of the data driver IC 150 to the second output pad OP2 and the second output wiring OL2 is connected to the via hole VH to the output terminal of the data driver IC 150 and the second output pad OP2.

The first LOG pad LOGP1 and the second LOG pad LOGP2 may be disposed at the edges of the first output pad OP1 and the second output pad OP2.

The first LOG pad LOGP1 is disposed at an edge corner of the second COF 140 overlapping the display panel 120, but the present invention is not limited thereto.

The first LOG pad LOGP1 connects the COF power wiring 113b disposed along the edge of the second COF 140 to the LOG power wiring 113a and the COF power wiring 113b, (113c). The position of the first LOG pad LOGP1 and the structure of the COF power wiring 113b may be variously changed.

The second LOG pad LOGP2 may be connected to the LOG data control line 111b connected to the timing controller 111. [ The second LOG pad LOGP2 may be electrically connected to the first input wiring IL1 connected to the input terminal of the data driver IC 150. [ The second LOG pad LOGP2 may be connected to the second input wiring line IL2. The second input wiring IL2 may be directly connected to the second LOG pad LOGP2. The second input wiring IL2 may be connected to the first input wiring IL1 via a via hole VH. That is, the first input wiring IL1 and the second input wiring IL2 may be disposed on different layers. For example, the first input wiring IL1 may be disposed on one side of the second COF 140, and the second input wiring IL2 may be disposed on the other side of the second COF 140 . The second COF (IL2) of the embodiment may include first and second LOG pads (LOGP1, LOGP2) to receive power and gate control signals as well as digital video data and timing control signals from the display panel 120 have. Therefore, in the embodiment, the second COF 140 and the printed circuit board 110 are separated from each other without directly connecting them, and electrically connected through the first LOG (LOG1) or the second LOG (LOG2) The gate control signal, the digital video data, and the timing control signal are provided to the second COF 140 through the display panel 120, thereby reducing the size of the printed circuit board 110 and reducing the manufacturing cost. Since the COF input pad connected to the printed circuit board 110 is removed from the second COF 140, the entire size of the second COF 140 can be reduced by deleting the input pad area IPA where the COF input pad is located . Accordingly, the second COF 140 can be reduced in size to reduce manufacturing costs. In addition, since the second COF 140 and the printed circuit board 110 are removed from the pad connection process, the manufacturing process can be simplified.

6 is a diagram showing the resolution of the display area according to the first and second COFs according to the embodiment.

As shown in Fig. 6, the display device of the embodiment can adopt the technical features of Figs. 1 to 5. The display device including the first and second COFs 130 and 140 of the embodiment can implement different resolutions for each region. For example, when the display panel of the embodiment has a resolution of 1920 x 1800, the first and third regions are divided into a first region and a third region, and a high resolution (HD) data line having a data line of 720 and a low resolution LD). In this case, the display device of the embodiment has the second COF 140 having a large number of output pads and the first COF 130 having a relatively smaller number of output pads than the second COF 140, Can be arranged in the low resolution (LD). That is, in the display device of the embodiment, the number of data lines corresponding to high definition (HD) is larger than the number of data lines corresponding to low resolution (LD). Here, the display panel 120 of the embodiment is limited to the resolution of 1920 x 1800, but it is not limited thereto, and may be an ultra high resolution of 4k, 8k or more.

In the embodiment, in the case of a display device having various resolutions in different areas, the second COF 140 having a two-layer COF wiring structure capable of sufficiently securing the number of output pads is disposed. Therefore, in order to realize ultra- Since the second COFs 130 and 140 are selectively used, the number of COFs can be minimized, thereby reducing manufacturing costs.

In the embodiment, when the resolution of the display panel 120 is different, the first and second COFs 130 and 140 are selectively used to minimize the number of COFs, have. In the embodiment, the low resolution is described as corresponding to the first COF 130, but the present invention is not limited thereto. For example, the COF 140 corresponding to the low-resolution region may be used. Here, the second COF 140 applied to a low resolution can use a data driver IC corresponding to a low resolution, and the total size can be reduced because the number of output pads is secured.

7 is a plan view showing a display device according to another embodiment.

7, the display device 200 of another embodiment may include a display panel 120, a printed circuit board 110, first and second COFs 130 and 140, and the like.

The display device 200 of another embodiment includes at least two first COFs 130 directly connected to the printed circuit board 110 and at least two first COFs 130 disposed on both sides of the first COF 130, At least two second COFs 140 may be included. The detailed configuration of the first and second COFs 130 and 140 and the configuration of the printed circuit board 110 including the power supply unit 113 and the timing control unit 111 and the configuration of the LOG The technical features of the display device of the embodiment of Figs. 2 to 5 can be employed.

The second COF 10 may be a LOG pad for receiving digital video data and timing control signals as well as power and gate control signals from the LOG of the display panel 120, The printed circuit board 110 is separated from the printed circuit board 110, thereby reducing the size of the printed circuit board 110 and reducing manufacturing costs. In addition, since the COF input pad connected to the printed circuit board 110 is deleted, the second COF 140 can reduce the entire size by deleting the input pad area where the COF input pad is located. Accordingly, the second COF 140 can be reduced in size to reduce manufacturing costs. In addition, since the second COF 140 and the printed circuit board 110 are removed from the pad connection process, the manufacturing process can be simplified.

In addition, the display device 200 of another embodiment can improve defects due to COF damage by the second COFs 140 separated from the printed circuit board 110 even if the curved display device or the flexible display device is enlarged have.

In addition, in the case of the display panel 120 having different resolutions and divided into a plurality of regions, the display device 200 of another embodiment selectively arranges the first and second COFs 130 and 140 in the corresponding region It is possible to realize images of different resolutions in different areas while reducing manufacturing cost.

8 is a plan view showing a display device according to another embodiment.

8, the display device 300 of another embodiment may include a display panel 120, a printed circuit board 110, first and second COFs 130 and 140, and the like.

The display device 300 of another embodiment may include a first COF 130 directly connected to the printed circuit board 110 and at least two second COFs 140 spaced from the printed circuit board 110 . The detailed configuration of the first and second COFs 130 and 140 and the configuration of the printed circuit board 110 including the power supply unit 113 and the timing control unit 111 and the configuration of the LOG The technical features of the display device of the embodiment of Figs. 2 to 5 can be employed.

In the display device 300 of another embodiment, the printed circuit board 110 and the first COF 130 may be disposed on one edge of the display panel 120. That is, the display device 300 of another embodiment can change the position of the printed circuit board 110 according to the design or usage. The second COF 140 of another embodiment includes LOG pads for receiving digital video data and timing control signals as well as power and gate control signals from the LOG of the display panel 120, The size of the printed circuit board 110 can be reduced, thereby reducing manufacturing costs. In addition, since the COF input pad connected to the printed circuit board 110 is deleted, the second COF 140 can reduce the entire size by deleting the input pad area where the COF input pad is located. Accordingly, the second COF 140 can be reduced in size to reduce manufacturing costs. In addition, since the second COF 140 and the printed circuit board 110 are removed from the pad connection process, the manufacturing process can be simplified.

In addition, when the display device 300 of another embodiment is applied to a curved display device or a flexible display device, a defect caused by COF damage by the second COFs 140 separated from the printed circuit board 110 can be prevented Can be improved.

In addition, in the case of the display panel 120 having different resolutions divided into a plurality of regions, the display device 300 of another embodiment may selectively place the first and second COFs 130 and 140 in the corresponding regions Therefore, it is possible to realize images of different resolutions in different areas while reducing manufacturing cost.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Accordingly, the contents of such combinations and modifications should be construed as being included in the scope of the embodiments.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. It can be seen that the modification and application of branches are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

100: display device
110: printed circuit board
113:
111:
111a: LOG gate control wiring
111b: LOG data control wiring
113a: LOG power supply wiring
113b: COF power supply wiring
113c: Panel power supply wiring
130: 1st COF
140: 2nd COF
150: Data Driver IC

Claims (8)

A printed circuit board including a power supply unit and a timing control unit;
At least one first chip on film (COF) having input pads connected to the printed circuit board;
A display panel having at least one LOG (Line On Glass) connected to the output pads of the first COF; And
And at least one second COF coupled to the LOG.
The method according to claim 1,
The second COF includes a first LOG pad and a second LOG pad at an edge thereof. The first LOG pad is connected to a LOG power supply line connected to the power supply unit. The second LOG pad is connected to a LOG Display connected to data control wiring.
3. The method of claim 2,
The first and second COFs include a data drive IC,
The second COF includes a first input wiring connected to an input terminal of the data drive IC; And
And a second input wiring connected to the second LOG pad,
Wherein the first input wiring and the second input wiring are arranged in different layers.
The method of claim 3,
And the first input wiring and the second input wiring are connected to each other via a via hole.
The method according to claim 1,
Wherein the first COF and the second COF comprise a data drive IC,
At least one of the first COF and the second COF includes an output pad coupled to an output of the data driver IC, the output pad having a first output pad " G " second output pad staggered in two rows.
6. The method of claim 5,
Wherein at least one of the first COF and the second COF includes a first output wiring connected to the first output pad and a second output wiring connected to the second output pad, A display device disposed on different layers.
The method according to claim 1,
Wherein the display panel has a constant curvature along the major axis direction.
The method according to claim 1,
Wherein the display panel has a different number of data lines corresponding to the output pad of the first COF and a corresponding number of data lines of the output pad of the second COF.

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