KR102595152B1 - Printed Circuit Board and Display Device having the same - Google Patents

Abstract

These embodiments disclose a printed circuit board and a display device equipped with the same. The disclosed display device includes a display panel that displays an image, a plurality of printed circuit boards that supply signals to display an image on the display panel, and the printed circuit board is one of two connectors disposed at both ends of a flexible cable. It includes a first connector that is fastened to one, a bent portion on which the first connector is disposed, and a horizontal portion disposed perpendicular to the bent portion, and the first connector is disposed on a side of the bent portion, in an edge area of the display panel. It has the effect of preventing signal delay and voltage drop.

Description

Printed circuit board and display device having the same}

This embodiment relates to a display device, and more specifically, to a printed circuit board that prevents signal delay and voltage drop in the edge area of a display panel and a display device including the same.

With the development of the information society, the demands for display devices have diversified, and various display devices have been developed to replace CRT (Cathode Ray Tube).

For example, liquid crystal display device (LCD), plasma display panel (PDP) and organic light emitting display device (OLED), quantum dot display device, This is a flat panel display device such as an electrophoresis display device.

Such flat panel displays consist of a display panel composed of a number of pixels, and a driving system that supplies image signals and control signals to the display panel.

A display panel generally consists of a first substrate on which signal wires for transmitting signals for implementing images and switching elements for driving the pixels are formed, and a second substrate bonded opposite to the first substrate.

A driving system is generally a printed circuit board (PCB) on which a system that supplies signals and power to implement images and a controller that converts signals supplied from the system into signals to be supplied to the display panel are mounted. It consists of a printed circuit board and a driving integrated circuit (IC) that processes the signals converted from the printed circuit board and transmits them to the display panel.

In other words, the printed circuit board converts signals supplied from an external system, such as a computer processor (CPU), into signals for driving the switching elements formed on the display panel through a controller, etc., and displays the converted signals through a driving IC. supplied to the panel.

Recently, as display devices have become larger, the printed circuit board corresponding to one display panel is divided into a plurality of printed circuit boards and arranged. Additionally, a plurality of printed circuit boards are electrically connected by flexible cables such as FPC (Flexible Plastic Cable) or FFC (Flexible Flat Cable).

In particular, among the plurality of printed circuit boards, the printed circuit board corresponding to the center of the display panel receives signals directly from an external system, and the supplied printed circuit boards transmit signals to adjacent printed circuit boards and output signals to the display panel. .

However, due to the flexible cable that electrically connects the printed circuit boards, the difference between the signal of the printed circuit board corresponding to the center of the display panel and the signal of the printed circuit board corresponding to the edge of the display panel becomes severe due to signal delay or voltage drop. There is a problem.

As a result, a large deviation occurs between the data signal output to the display panel from the printed circuit board disposed in the center area of the display panel and the data signal output to the display panel from the edge area of the display panel, resulting in poor image quality.

In this embodiment, the structure of the printed circuit board that supplies signals (data signals or power signals) to the display panel is changed to prevent signal delay and voltage drop in the edge area of the display panel, and a printed circuit board equipped with the same is provided. The purpose is to provide a display device.

In addition, this embodiment is a printed circuit board that changes the structure of the printed circuit board to reduce the gap between the printed circuit boards and maintain uniform fastening between the printed circuit boards and the flexible cable, and a display device equipped with the same. There is another purpose in providing.

In addition, this embodiment provides a printed circuit board that prevents signal delay and voltage drop by reducing the length of the flexible cable that electrically connects the printed circuit boards by changing the structure of the printed circuit board, and a display device equipped with the same. There is a purpose.

The present embodiments include a printed circuit including a first connector coupled to one of the second connectors disposed at both ends of the flexible cable, a bent portion where the first connector is disposed, and a horizontal portion disposed perpendicular to the bent portion. A substrate can be provided.

Additionally, in these embodiments, the first connector of the printed circuit board may provide a printed circuit board disposed on the side of the bent portion.

Additionally, the present embodiments can provide a printed circuit board in which the width of the bent portion corresponding to the direction perpendicular to the horizontal portion is greater than the width of the horizontal portion.

Additionally, in these embodiments, the flexible cable may provide a printed circuit board that is either a flexible plastic cable (FPC) or a flexible flat cable (FFC).

Additionally, these embodiments can provide a printed circuit board having an 'ㄱ' shaped structure.

In addition, the present embodiments provide a printed circuit board that prevents signal delay and voltage drop in the edge area of the display panel by changing the structure of the printed circuit board that supplies signals (data signals or power signals) to the display panel. can do.

Additionally, the present embodiments can provide a display device including a display panel that displays an image and a plurality of printed circuit boards that supply signals to display the image on the display panel.

In addition, in the present embodiments, the printed circuit board includes a first connector coupled to one of the second connectors disposed at both ends of the flexible cable, a bent portion where the first connector is disposed, and an arrangement perpendicular to the bent portion. and a horizontal portion, and the first connector may provide a display device disposed on a side of the bent portion.

Additionally, the present embodiments may provide a display device in which bent portions of a pair of printed circuit boards among a plurality of printed circuit boards are arranged to face each other.

Additionally, in these embodiments, the flexible cable can provide a display device disposed between bent portions of a pair of printed circuit boards.

Additionally, the present embodiments may provide a display device in which first connectors of a pair of printed circuit boards among a plurality of printed circuit boards are arranged to face each other.

Additionally, the present embodiments can provide a display device in which the width of the bent portion corresponding to the direction perpendicular to the horizontal portion is larger than the width of the horizontal portion.

Additionally, these embodiments may provide a display device in which the printed circuit board has an 'L' shaped structure.

The present embodiments can provide a display device that prevents signal delay and voltage drop by reducing the length of the flexible cable that electrically connects the printed circuit boards by changing the structure of the printed circuit board.

The printed circuit board and the display device equipped with the same according to this embodiment change the structure of the printed circuit board that supplies signals (data signals or power signals) to the display panel, thereby reducing the signal delay and voltage at the edge area of the display panel. It has the effect of preventing descent.

In addition, the printed circuit board and the display device equipped with the same according to this embodiment can change the structure of the printed circuit board to reduce the gap between the printed circuit boards, while maintaining uniform fastening between the printed circuit boards and the flexible cable. It has an effect.

In addition, the printed circuit board and the display device equipped with the same according to this embodiment have the effect of preventing signal delay and voltage drop by reducing the length of the flexible cable that electrically connects the printed circuit boards by changing the structure of the printed circuit board. there is.

1 is a block diagram showing the structure of a display device according to an embodiment.
FIG. 2 is a diagram showing printed circuit boards connected by a flexible cable in a display device according to an embodiment.
FIG. 3 is a diagram showing how signals supplied from the display device system are delayed, resulting in an increase in voltage deviation in the data signal output to the display panel.
Figure 4 is a diagram showing the structure of a printed circuit board and a flexible cable of a display device according to an embodiment.
Figure 5 is a diagram showing two adjacent printed circuit boards connected by a flexible cable according to an embodiment.
FIGS. 6A and 6B are diagrams illustrating the structures of a printed circuit board and a flexible cable used in a conventional display device and a printed circuit board and a flexible cable used in a display device of an embodiment.
FIG. 7 is a diagram illustrating a decrease in the signal delay of signals supplied from the display device system according to an embodiment and a decrease in the voltage deviation of the data signal output to the display panel.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is not limited. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are illustrative, and the present invention is not limited to the matters shown. Like reference numerals refer to like elements throughout the specification. Additionally, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

When 'includes', 'has', 'consists of', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the plural is included unless specifically stated otherwise.

When interpreting a component, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as 'on top', 'on the top', 'on the bottom', 'next to', etc., 'immediately' Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

In the case of a description of a temporal relationship, for example, if a temporal relationship is described as 'after', 'successfully after', 'after', 'before', etc., 'immediately' or 'directly' Unless used, non-consecutive cases may also be included.

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

Each feature of the various embodiments of the present invention can be combined or combined with each other, partially or entirely, and various technological interconnections and operations are possible, and each embodiment can be implemented independently of each other or together in a related relationship. It may be possible.

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

1 is a block diagram showing the structure of a display device according to an embodiment.

Referring to FIG. 1, the display device 100 according to this embodiment includes a display panel 110, a system (system 130) that supplies signals and power for implementing an image to the display panel 110, and It includes a driver 120 that converts a signal supplied from the system 130 into a signal to be supplied to the display panel 110.

In the display panel 110, a plurality of data lines DL and a plurality of gate lines GL are arranged in directions that intersect each other. Additionally, in the display panel 110, a number of subpixels (SP: Subpixels) are arranged in a matrix type.

The display panel 110 includes a first substrate on which a thin film transistor, a storage capacitor, a pixel electrode, and/or a common electrode are disposed in each subpixel (SP), and a second substrate on which a color filter layer is bonded with a liquid crystal layer interposed therebetween. It is a panel, or a first substrate on which circuit elements such as two or more transistors and one or more capacitors and an organic light emitting diode (OLED) are disposed in each subpixel (SP), and a second substrate bonded to the first substrate. It may be a composed panel.

The driver 120 may include a gate driver and a data driver. The data driver supplies a data voltage to a plurality of data lines arranged on the display panel 110 to drive the plurality of data lines.

The gate driver sequentially supplies scan signals to a plurality of gate lines arranged on the display panel 110 to sequentially drive the plurality of gate lines. Here, the scan signal includes a gate high voltage (VGH) and a gate low voltage (VGL).

The driver 120 may include a timing controller. A timing controller may be disposed in system 130. The timing controller supplies control signals to the data driver and gate driver of the driver 120 to control the data driver and gate driver.

Each gate driver may include one or more gate driver integrated circuits (GDIC), and the gate driver integrated circuit (GDIC) may include a shift register, a level shifter, etc.

The data driver may include one or more source driver integrated circuits (SDICs: Source Driver Integrated Circuits, also known as data driver ICs), and each of the source driver integrated circuits (SDICs) includes a shift register and a latch. , digital analog converter (DAC: Digital Analog Converter), output buffer, etc.

In addition, if the display device 100 is an organic light emitting display device, an analog digital converter (ADC: Analog Digital Converter) that senses the analog voltage value, converts it to a digital value, and generates and outputs sensing data for subpixel compensation is additionally installed. It can be included.

The driver 120 may be composed of a printed circuit board (PCB), and circuit elements disposed in the data driver and gate driver may be mounted on the printed circuit board.

Additionally, the printed circuit board of the driver 120 may be composed of a plurality of printed circuit boards as the display device 100 becomes larger, and these may be electrically connected by a flexible cable.

FIG. 2 is a diagram showing printed circuit boards connected by flexible cables in a display device according to an embodiment, and FIG. 3 shows that signals supplied from the system of the display device are delayed, so that the data signal output to the display panel has a voltage This diagram shows how the deviation increases.

Referring to FIG. 2, the driver 120 of the display device according to the embodiment is composed of a plurality of printed circuit boards 220.

A plurality of printed circuit boards 220 are connected in pairs by a first flexible cable 200. The printed circuit board 220 corresponding to the central area of the display panel 110 is connected to the system 130 and the second flexible cable 210 to receive signals from the system 130.

The first flexible cable 200 includes a cable portion 200a and first connectors 200b disposed at both ends of the cable portion 200a. The first flexible cable 200 electrically connects a pair of printed circuit boards 220 to each other.

Therefore, unlike other printed circuit boards 220, the printed circuit board 220 that receives signals from the system 130 has two flexible cables so that it can be connected to the first flexible cable 200 and the second flexible cable 210. 2 connectors 121 may be provided.

Additionally, the printed circuit board 220 that receives the signal through the second flexible cable 210 transmits the signal to the adjacent printed circuit board 220 through the first flexible cable 200.

A plurality of printed circuit boards 220 disposed on the driving unit 120 convert signals supplied from the system 130 to display an image on the display panel 110, and each of the plurality of printed circuit boards 220 An image signal (data signal, etc.) is output to the area of the display panel 110 corresponding to .

As shown in FIG. 2, the first flexible cable 200 is formed to have an actual length L1, but after folding the edge of the cable portion 200a so that the first connector 200b faces the same direction, a pair is printed. It is connected to the second connector 121 disposed on the circuit board 220.

Accordingly, the length L1 of the first flexible cable 200 is formed to be longer than the gap between the pair of printed circuit boards 220.

As described above, as the length of the first flexible cable 200 electrically connecting the pair of printed circuit boards 220 becomes longer than necessary, the signals (data signals and control signals) supplied from the system 130 A signal delay or voltage drop occurs in the edge area of the display panel 110.

As shown in FIG. 3 , the system 130 of the display device 100 is connected to one or two of the plurality of printed circuit boards 220 through a second flexible cable 210. The printed circuit board 220 that receives the signal from the system 130 transmits the signal to the adjacent printed circuit board 220 connected to the first flexible cable 200.

In particular, since the printed circuit board 220 disposed at the edge of the display panel 110 is transmitted via the first flexible cable 200, signal delay occurs when the length L1 of the first flexible cable 200 becomes longer. and a voltage drop occurs.

Therefore, when the signal supplied from the system 130 is an image signal, the data signal converted by the driver 120 is output at a voltage level of S1 on the printed circuit board 220 corresponding to the central area of the display panel 110. , the output is delayed and lowered as shown in S2 and S3 as it moves from the central area of the display panel 110 to the edge area.

That is, the voltage deviation ∇V1 between the data signal S1 in the central area of the display panel 110 and the data signal S3 in the edge area of the display panel 110 increases. In this way, when the voltage deviation of the data signal increases, distortion of the data signal is increased and image quality deteriorates.

In this embodiment, the printed circuit board disposed in the driving part of the display device is composed of a horizontal part and a bent part, and the bent parts of a pair of printed circuit boards face each other, thereby reducing the length of the flexible cable connecting the printed circuit board. It works.

Additionally, in this embodiment, the flexible cable is fastened between the bent portions of a pair of printed circuit boards, so that the fastening force between the flexible cable and the printed circuit board can be maintained uniformly.

FIG. 4 is a diagram showing the structure of a printed circuit board and a flexible cable of a display device according to an embodiment, and FIG. 5 is a diagram showing two adjacent printed circuit boards connected by a flexible cable according to an embodiment.

Referring to FIGS. 4 and 5 , the display device 100 according to the embodiment includes a display panel 110, a driver 120 that supplies image signals to the display panel 110, and a signal to the driver 120. It includes a system 130 that does.

The driving unit 120 includes a plurality of printed circuit boards 520. The printed circuit board 520 is electrically connected by a first flexible cable 400, and the printed circuit board 520 corresponding to the central area of the display panel 110 is connected to the system by a second flexible cable 210. It is electrically connected to (130).

The printed circuit board 520 according to this embodiment includes a horizontal portion 520a parallel to one side of the display panel 110 and a bent portion 520b bent from the horizontal portion 520a. Additionally, a first connector 520c is disposed on the bent portion 520b.

Additionally, the bent portion 520b may be bent in a direction perpendicular to the horizontal portion 520a, but this is not a fixed structure. Accordingly, it can be bent to have a predetermined inclination angle based on the horizontal portion 520a.

Accordingly, the printed circuit board 520 may have an 'ㄱ'-shaped structure, and in some cases, may have an 'ㅅ'-shaped structure.

The printed circuit boards 520 disposed on the driving unit 120 are connected in pairs by the first flexible cable 400. A pair of printed circuit boards 520 are arranged so that bent portions 520b face each other.

The first flexible cable 400 includes a cable portion 400a and second connectors 400b disposed at both ends of the cable portion 400a. The first flexible cable 400 is disposed between the printed circuit boards 520 and is connected to the first connector 520c disposed at the bent portion 520b of the printed circuit board 520.

That is, the first flexible cable 400 is disposed between the printed circuit boards 520 in a direction parallel to the horizontal portion 520a of the printed circuit board 520, and electrically connects the two printed circuit boards 520. Connect.

Therefore, the first flexible cable 400 according to this embodiment is disposed between the printed circuit boards 520, and connects the second connector 400b of the first flexible cable 400 and the first flexible cable 400b of the printed circuit board 520. 1 Connector 520c is connected.

As such, in this embodiment, there is no need to fold a certain area of the cable portion 520b to change the direction of the second connector 400b of the first flexible cable 400 connecting the printed circuit boards 520, so that the first flexible cable 520 is connected to the printed circuit board 520. The length of the cable 400 can be reduced to L2.

As in this embodiment, when the length (L2) of the first flexible cable 400 connecting the printed circuit boards 520 is shortened, the signal supplied from the system 130 is printed corresponding to the edge area of the display panel 110. When transmitting to the circuit board 520, signal delay and voltage drop can be reduced.

In addition, the printed circuit board 520 according to this embodiment has a width (H2) of the bent portion (520b) that is larger than the width (H1) of the horizontal portion (520a) in a direction parallel to the bent portion (520b). You can.

When this has a horizontal structure like the printed circuit board 220 of FIG. 2, the length of the first connector 121 disposed on the printed circuit board 220 can be made large, but as in the present embodiment, the printed circuit board 220 When forming the horizontal portion 520a and the bent portion 520b on the circuit board 520, the width H2 of the bent portion 520b is formed to be equal to or smaller than the width H1 of the horizontal portion 520a. , This is because the length of the first connector 520c cannot be sufficiently secured.

Therefore, in the printed circuit board 520 of this embodiment, the width H2 of the bent portion 520b is formed to be larger than the width H1 of the horizontal portion 520a, thereby increasing the length L2 of the first flexible cable 400. The electrical connection characteristics were improved by reducing the length of the connector while ensuring sufficient length of the connector.

This will be explained in more detail in FIGS. 6A and 6B below.

FIGS. 6A and 6B are diagrams illustrating the structures of a printed circuit board and a flexible cable used in a conventional display device and a printed circuit board and a flexible cable used in a display device of an embodiment.

Referring to FIG. 6A, the printed circuit board 220 disposed in a conventional display device consists only of a horizontal portion parallel to one side of the display panel, so the width H3 of the printed circuit board 220 is a single width ( It has H3).

Additionally, when the length of the printed circuit board 220 is T1, a first connector 121 having a length of T2 is disposed on one side of the printed circuit board 220. As shown in FIG. 6A, the first connector 121 formed on the printed circuit board 220 used in a conventional display device is expanded in various ways within the range of the total length T1 of the printed circuit board 220. can do.

That is, in the conventional printed circuit board 220, the area where the first connector 121 is to be placed is wide, so that a sufficient length of the first connector 121 can be secured.

However, when connecting a pair of printed circuit boards 220 by the first flexible cable 200, the direction of the second connector 200b of the first flexible cable 200 is directed to the first connector 200b formed on the printed circuit board 220. Because the direction of the connector 121 had to be changed, there was a problem in that the length of the cable portion 200a of the first flexible cable 200 became longer.

That is, as shown in FIGS. 2 and 6A, the first flexible cable 200 with a length (L1) longer than the distance between the pair of printed circuit boards 220 was needed.

Accordingly, in conventional display devices, significant signal delay and voltage drop occurred due to the first flexible cable 200.

Referring to FIG. 6B, in the display device according to this embodiment, the printed circuit board 520 is formed in an 'ㄱ' shaped structure, and a first flexible layer is formed between the opposing bent portions 520b of the printed circuit boards 520. Because the cable 400 is disposed, the total length of the first flexible cable 400 is reduced to L2.

Additionally, in this embodiment, when the length of the printed circuit board 520 is T1, the width of the horizontal portion 520a is H1, and the width of the bent portion 520b is H2. By forming the width H2 of the bent portion 520b to be larger than the width H1 of the horizontal portion 520a, the length T3 of the first connector 520c can be sufficiently secured.

Accordingly, the display device according to this embodiment prevents signal delay and voltage drop by changing the structure of the printed circuit board and reducing the length of the first flexible cable 400 to L2.

In addition, in this embodiment, the bent portion 520b of the printed circuit board is formed to be larger than the width of the horizontal portion 520a, thereby preventing the area of the first connector 520c from being reduced due to changes in the structure of the printed circuit board. Therefore, in this embodiment, a sufficient length of the first connector 520c disposed on the printed circuit board 520 can be secured, thereby preventing signal transmission characteristics from being deteriorated.

FIG. 7 is a diagram illustrating a decrease in the signal delay of signals supplied from the display device system according to an embodiment and a decrease in the voltage deviation of the data signal output to the display panel.

Referring to FIG. 7, in the display device according to this embodiment, the signal supplied from the system 1300 is supplied to the printed circuit board 520 corresponding to the central area of the display panel 110, and then connected to the first flexible cable. A signal is transmitted to the adjacent printed circuit board 520 through 400.

As shown in FIG. 6, the first flexible cable 400 is disposed between bent portions 520b of the printed circuit board 520 facing each other, so that, as in FIG. 3, signal delay and voltage drop occur. It doesn't happen much.

That is, the signal supplied from the system 130 is transmitted to the adjacent printed circuit board 520 through the first flexible cable 400 having a length of L2. Therefore, in the conventional display device, the signal is transmitted through the first flexible cable with a length of L1 that is longer than L2, but in this embodiment, the signal is transmitted through the first flexible cable 400 with a length equal to the spacing between the printed circuit boards. Therefore, signal delay and voltage drop are significantly reduced compared to conventional technology.

As shown in FIG. 7, when the signal supplied from the system 130 is an image signal, the data signal of S1 is output from the printed circuit board 220 corresponding to the central area of the display panel 110, and the display panel ( 110), the printed circuit boards output data signals of S2 and S3 as they move from the central area to the edge area. Comparing S3 to S1, it can be seen that the voltage deviation (∇V2) of the data signal is reduced.

The printed circuit board and the display device equipped with the same according to this embodiment change the structure of the printed circuit board that supplies signals (data signals or power signals) to the display panel, thereby reducing the signal delay and voltage at the edge area of the display panel. It has the effect of preventing descent.

In addition, the printed circuit board and the display device equipped with the same according to this embodiment can change the structure of the printed circuit board to reduce the gap between the printed circuit boards, while maintaining uniform fastening between the printed circuit boards and the flexible cable. It has an effect.

In addition, the printed circuit board and the display device equipped with the same according to this embodiment have the effect of preventing signal delay and voltage drop by reducing the length of the flexible cable that electrically connects the printed circuit boards by changing the structure of the printed circuit board. there is.

The above description and attached drawings are merely illustrative of the technical idea of the present invention, and those skilled in the art will be able to combine the components without departing from the essential characteristics of the present invention. , various modifications and transformations such as separation, substitution, and change will be possible. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

100: display device
120: driving unit
130: system
220: 520: printed circuit board
400: first flexible cable
520a: horizontal part
520b: bend part
520c: first connector

Claims (10)

delete delete delete delete A display panel that displays images; and
It includes a plurality of printed circuit boards that supply signals to display images on the display panel,
Each of the printed circuit boards is,
A first connector coupled to one of two connectors disposed at both ends of the flexible cable,
a bent portion where the first connector is disposed,
It includes a horizontal portion disposed perpendicular to the bent portion,
The bent portion includes a first side forming an inner angle perpendicular to the horizontal portion and a second side opposite to the first side,
The first connector is disposed on a second side of the bent portion,
The horizontal portion has a width parallel to the extension direction of the bent portion,
The length of the first connector is greater than the width of the horizontal portion,
The second side of the bent portion where the first connector is located has a width corresponding to a direction perpendicular to the horizontal portion and is larger than the width of the horizontal portion,
The length of the first connector includes an area overlapping with the width of the horizontal portion,
One pair of printed circuit boards among the plurality of printed circuit boards is arranged so that second sides of the bent portions face each other,
The flexible cable is disposed between second sides of the bent portions of the pair of printed circuit boards. delete delete According to clause 5,
A display device in which the first connectors of a pair of printed circuit boards among the plurality of printed circuit boards are arranged to face each other. delete According to clause 5,
The printed circuit board is a display device having an 'ㄱ' shaped structure.

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