KR20130039039A - Display apparatus - Google Patents

Abstract

PURPOSE: A display device is provided to extend both ends of an upper substrate, which is adjacent to a pad unit, to the end of a lower substrate, thereby preventing cracks on the lower substrate during the manufacturing of the display device. CONSTITUTION: A cut unit(121) is formed by concavely carving a part of a first non-display area, which is adjacent to a pad unit(130) of a lower substrate(110), in an upper substrate(120). First and second protruding units(122,123) protrude to the outside in both ends of the cut unit and are extended to the end of the lower substrate. When a display device is manufactured, cracks on the pad unit of a display panel(100) are reduced.

Description

Display device {DISPLAY APPARATUS}

The present invention relates to a display apparatus, and more particularly, to a display apparatus including a display panel formed by bonding an upper substrate and a lower substrate.

With the development of various portable electronic devices such as mobile communication terminals and notebook computers, the demand for flat panel display devices that can be applied thereto is gradually increasing.

Such flat panel display devices include liquid crystal displays, field emission displays, plasma display panels, organic light emitting devices, and electrophoresis. And a display device (EPD).

On the other hand, the display panel applied to such a display device is characterized in that generally consists of an upper substrate and a lower substrate.

Among the lower substrates, data lines, gate lines, thin film transistors (TFTs), and the like are formed, and the upper substrate is bonded to the lower substrate to perform the function of protecting the components as described above.

1 is an exemplary view showing a configuration of a conventional display device, (a) is a perspective view, (b) is a front view. In particular, FIG. 1 illustrates a state in which the touch panel 50 is attached to the display panel 10 by an on-cell touch method. 2 is an exemplary view illustrating a state in which an upper substrate and a lower substrate of a display panel applied to a conventional display device are bonded to each other.

In a conventional display device, various driver ICs 30 for driving a data line or a gate line may include a pad part on an outer surface of a lower substrate 11 on which a thin film transistor TFT is formed. 13) is formed.

On the other hand, the driving chips 30 are connected to the main board 80, which is equipped with a timing control path for transmitting various signals to the driving chip, through a film-shaped connection part 70.

That is, in the conventional display device, as shown in FIGS. 1 and 2, since the pad part 13 around the driver IC 30 is formed only of the lower substrate (TFT substrate) 11, Cracks are likely to occur in the lower substrate 11.

In addition, the conventional display device prevents the corrosion of the pattern by applying UV silicon (96) around the driver IC (30), but these materials are composed of only the lower substrate (11) Since pressure is applied to the pad portion, there is a high possibility that a crack occurs in the lower substrate 11.

Among the display apparatuses as described above, in particular, the touch panel 50 is attached to the display panel 10 by an on-cell touch method, and the reinforcing substrate 91 is attached to the top of the touch panel 50. In most organic light emitting display devices, there is no cover bottom, and thus cracks are generated in the pad part during the SVR operation and the final assembly process. In addition, such cracks cause defects such as color sense defects during screen driving.

In addition, as a result of the drop test on the phone manufactured by the display device having the structure as described above, as described above, the panel pad of the display device is a single glass, that is, Since only the lower substrate (TFT substrate) 11 is used, cracks are easily generated.

Meanwhile, in order to prevent cracks as described above, as shown in FIG. 1, a cushion tape 94 is attached around the driver IC 30, but due to this, Increasing the process and increasing the cost, and even this cushion tape is not 100% prevented from cracking the pad portion.

That is, in the case of a conventional display device (including a display device driven by an on-cell touch method), a lower glass 11 having a thin film transistor TFT formed around the driver IC 30 is formed. Because it is only composed of), there is a problem that easily broken in the module assembly process and phone drop test.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a display device in which both ends of an upper substrate adjacent to a pad portion formed on a lower substrate are extended to the ends of the lower substrate.

In accordance with an aspect of the present invention, a display device includes: a lower substrate on which a gate line, a data line, and a thin film transistor are formed; and an upper substrate for covering an upper end of the lower substrate is bonded to each other. And a display panel having a display area for outputting the data, wherein one of the non-display areas formed on the outer surface of the lower substrate includes a pad part having a data pad connected to the data line. The left and right ends of the first non-display area corresponding to the pad part of the upper substrate are connected to the ends of the lower substrate forming the pad part, and the left and right ends of the first non-display area are respectively connected to each other. It is characterized in that the grooves are recessed in the direction of the display area from the outside.

According to the above solution, the present invention provides the following effects.

That is, the present invention extends both ends of the upper substrate adjacent to the pad portion to the ends of the lower substrate, thereby preventing cracks in the lower substrate generated during the manufacture of a display device such as a liquid crystal display or an organic light emitting display. It provides the effect of being prevented. In particular, the present invention provides an effect that the touch panel can prevent a crack of the lower substrate generated when the organic light emitting display device (OLED) attached to the display panel by an on-cell touch method. do.

In addition, the present invention is to enhance the rigidity of the pad portion, since the cushion tape and UV silicon coating process conventionally used to enhance the rigidity of the pad portion can be omitted, It provides the effect of reducing the cost.

1 is an exemplary view showing a configuration of a conventional display device.
2 is an exemplary view illustrating a state in which an upper substrate and a lower substrate of a display panel applied to a conventional display device are bonded to each other.
3 is an exemplary view showing a configuration of a display device according to the present invention.
4 is an exemplary view illustrating a state in which an upper substrate and a lower substrate of the display panel applied to the display device according to the present invention are bonded to each other.
5 is a diagram illustrating various upper substrates among display panels constituting another display device according to the present invention;
6 is a perspective view showing a part of a display device according to the present invention;
7 is a front view showing a part of a display device according to the present invention.
8 is a simulation showing the strength of the pad portion applied to the display device and the conventional display device according to the present invention.
9 is a graph showing the results of simulating the strength of the pad unit applied to the display device according to the present invention and the conventional display device.

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

3 is an exemplary view showing a configuration of a display apparatus according to the present invention, and in particular, shows a configuration of a display apparatus having a touch panel.

The display device according to the present invention is adjacent to the pad portion of the lower substrate in order to improve the rigidity of the panel (Panel) formed by bonding the upper substrate and the lower substrate and the fall rigidity of the phone (Phone) manufactured using such a panel. It is characterized by extending both ends of the upper substrate to the end of the lower substrate. In particular, the present invention can be applied to a display device mounted on a small mobile terminal that can be used while the user moves, such as a mobile phone.

As shown in FIG. 3, the display device according to the present invention having the above characteristics includes: a display panel 100 for displaying an image, a gate driver 200 for applying scan pulses to a gate line of the display panel, and a display. And a data controller 300 for applying the video data signal RGB to the data line of the panel, and a timing controller 400 for controlling the data driver and the gate driver. In addition, the display device according to the present invention, applying a driving pulse to the touch panel 500 and the driving electrode of the touch panel for generating a detection signal by the user's touch and processes the detection signal received from the receiving electrode of the touch panel. It may be configured to include a signal processing unit 600 for detecting the touch or touch position. Here, the touch panel 500 and the signal processor 600 are collectively referred to as a touch sensing device.

First, the display panel 100 may be formed in various forms depending on what kind of display apparatus is the display apparatus according to the present invention. That is, the display device according to the present invention includes a liquid crystal display (LCD), a field emission display (PDP), a plasma display (PDP), an organic light emitting display (OLED) and an electrophoretic display (EPD). Accordingly, the display panel 100 may be configured in various forms.

For example, when the display device according to the present invention is a liquid crystal display (LCD), the display panel 100 includes a lower substrate 110 and a color filter on which data lines, gate lines, and thin film transistors are formed. When the display device according to the present invention is an organic light emitting display (OLED), the display panel 100 is formed of an organic light emitting diode, a data line, a gate line and a thin film transistor. The substrate may be formed of an upper substrate (Encap Glass) to be bonded to the lower substrate (TFT substrate) and the lower substrate to protect the organic light emitting diode. In addition, depending on whether the display device according to the present invention is a plasma display device (PDP) or an electrophoretic display device (EPD), the display panel 100 may be configured in various forms.

On the other hand, as described above, there may be a difference between the components formed on the upper substrate 120 and the lower substrate 110 of the display panel 100 according to the type of display device, any kind of display panel 100 It can be seen that also comprises a lower substrate 110 and the upper substrate 120. In particular, it can be seen that the gate substrate, the data line, and the thin film transistor (TFT) are basically configured on the lower substrate 110. Therefore, the lower substrate 110 is also referred to as a TFT substrate. In addition, the upper substrate 120 may be referred to as a color filter substrate because a color filter is formed in the case of a liquid crystal display (LCD). In the case of an organic light emitting display (OLED), the upper substrate 120 may also be referred to as an encap glass. can do.

In addition, the display panel 110 includes a non-display area in which an image is not displayed because the data driver 300 and the gate driver 200 are formed, and pixels are formed by the intersection of the gate line and the data line. According to the driving, the display area 140 may display an image.

The non-display area may further include an outer region 150 in which a gate driver 200 in the form of a driver chip is formed, or a sealant for joining an upper substrate and a lower substrate, and a data driver 300. ) May be divided into a pad unit 130 connected thereto.

Here, the pad unit 130 refers to an area in which a data pad, which is an end of a data line formed in the display area, is formed among the non-display areas. As illustrated in FIG. 3, the pad part 130 may include a data driver 300 in the form of a driver chip, and the data driver 300 may include a film-shaped connection part in which a circuit is formed. 700 may be connected to the timing controller 400 of the main board 800.

In addition, the data driver 300 may be configured in the form of a chip-on-film (COF) on the connection portion 700 in the form of a film, and the connection portion 700 may be connected to the data pad of the pad unit 130.

In addition, the data driver 300 may be formed on the main board 300, and may be connected to the data pad of the pad part 130 through the film-shaped connection part 700.

In addition, the gate driver 200 formed in the outer region 150 of the non-display area may include a timing controller (a circuit formed on a connection part 700 connected to a data pad and a circuit formed on a lower substrate). 400) may be electrically connected.

That is, the pad part 130 is a part to which various types of connection parts 700 for connecting the data line or the gate line formed on the lower substrate 110 and the timing controller 400 are connected.

As described above, the connection part 700 is configured in the form of a film in which a circuit is formed to connect the timing controller 400 of the main board and the data driver 300 formed in the pad part 130. Alternatively, the data driver 300 formed on the main board 800 may be connected to the data pad of the pad unit 130, or the driving chip IC forming the data driver 300 may be mounted. It is configured in the form of a chip-on-film (COF), it may be connected to the timing controller of the main board 800 and the data pad of the pad unit.

Meanwhile, as illustrated in FIG. 3, the pad part 130 according to the present invention has a lower substrate (ie, a portion of the non-display area of the upper substrate 120 corresponding to the pad part 130 being recessed and recessed). It is exposed to the outside by joining to 110). That is, since the first non-display area of the upper substrate 120 adjacent to the pad part 130 is formed in a shape recessed in the direction of the display area 140 from the outside as shown in FIG. When the substrate 110 and the upper substrate 120 are bonded to each other, the pad part 130 is exposed to the outside. Since the pad part is exposed to the outside as described above, the connection part 700 or the like may be attached to the pad part.

The pad unit 130 having the shape as described above will be described in detail with reference to FIGS. 4 to 7.

Next, the timing controller 400 receives timing signals such as a data enable signal (DE) and a dot clock (CLK) from an external system to control operation timing of the data driver 300 and the gate driver 200. The control signals GCS and DCS are generated. In addition, the timing controller 400 rearranges image data input from an external system and outputs the image data to the data driver 300.

Next, the data driver 300 converts the image data input from the timing controller into an analog pixel signal (image data signal) and outputs one horizontal line of image data signal every one horizontal period during which the scan signal is supplied to the gate line. Feed the fields. The data driver may be configured as a driver chip. The driving chip may be formed on the lower substrate as described above, or may be configured in the form of a chip-on-film (COF), or may be configured on the main board 800, and is connected to the data pad formed on the pad portion. In addition, the main board 800 and the data pad may be connected by various types of connection parts 700. That is, the connection part 700 is made of a flexible material in which a circuit is formed to connect the data driver 300 and the timing controller 400 formed on the lower substrate 110, or include a data driver in the form of a driving chip. In this state, the timing controller and the data pad may be connected, or the data driver 300 formed on the main board 800 and the data pad may be connected to each other.

Next, the gate driver 200 shifts the gate start pulse GSP transmitted from the timing controller 400 according to the gate shift clock GSC, and sequentially gate lines GL1 to GLn. ) To supply a scan pulse having a gate-on voltage (Von). The gate driver 200 provides a function of supplying the gate-off voltage Voff to the gate lines GL1 through GLn for the remaining period during which the scan pulse of the gate-on voltage Von is not supplied.

Finally, the touch sensing device may be additionally mounted on the display device according to the present invention, and detects a user's touch to determine a touch position. The touch sensing device may include a touch panel 500 and a signal processor 600.

The touch panel 500 is for generating a detection signal by a user's touch and may be configured in various forms such as a resistive film type and a capacitive type.

The touch panel 500 may be configured in various forms according to the arrangement position thereof. That is, the touch panel 500 may be configured to be stacked on the upper polarizing plate POL1 of the display panel 100 (On-Cell Touchl type), or may be embedded in the display panel 100, or may be formed of a lower substrate. It may be configured in the form (in-cell touch method) formed with the TFT array on the (110).

On the other hand, in the case of the on-cell touch method, since the touch panel 500 is stacked on the upper substrate 120, the cracks as described above may be formed in the pad part formed of only the lower substrate in the conventional display apparatus. Although the occurrence of cracks is a serious problem, in the display device according to the present invention, since the left and right ends of the pad unit 130 are formed in a state in which the lower substrate 110 and the upper substrate 120 are bonded to each other, a crack ( The occurrence of cracks can be reduced.

That is, the display device according to the present invention may be applied to the case in which the touch panel 500 is configured in an in-cell touch method or a form embedded in a display panel, and in particular, on-cell touch. If the method is configured in such a way that the effect can be maximized. A case in which the touch panel 500 is configured in an on-cell touch method will be described below with reference to FIGS. 6 and 7.

Meanwhile, the signal processor 600 applies driving pulses to the plurality of driving electrodes T1 to Tn formed on the touch panel, and the voltage value of the sensing signal received from the receiving electrodes R1 to Rm of the touch panel 500. Performs a function of determining whether the touch or the touch position using the.

4 is an exemplary view illustrating a state in which an upper substrate and a lower substrate of a display panel applied to a display apparatus according to the present invention are bonded to each other, and FIG. 5 is a diagram illustrating various examples of an upper substrate among display panels constituting another display apparatus according to the present invention. It is also.

As described above, the display panel 100 constituting the display device according to the present invention includes a lower substrate 110 on which a thin film transistor and the like are formed, and an upper substrate 120 bonded to the lower substrate. In the substrate 120, the portion of the non-display area corresponding to the pad portion 130 is joined to the lower substrate 110 in a concave shape so that the pad portion 130 is exposed to the outside.

That is, as shown in FIG. 4, the display panel 100 according to the present invention has a rectangular flat plate shape, a data line, a gate line, and a thin film transistor are formed, and the pad unit 130 includes data. The lower substrate 110 having the pads formed therein comprises a cutout portion 121 in which a first non-display area adjacent to the pad portion 130 is cut in a concave shape from the outside toward the display area 140. It is.

Therefore, when the lower substrate 110 and the upper substrate 120 having the shape described above are bonded to each other, the pad portion 130 of the lower substrate 110 is moved to the outside by the cut portion 121 of the upper substrate 120. May be exposed. Therefore, the lower substrate 110 may be electrically connected to the main board 800 on which the timing controller 400 is mounted through various types of connection parts 700 connected to the pad part 130.

Meanwhile, the first non-display area adjacent to the pad part 130 of the upper substrate 120 is, among the non-display areas formed on four side surfaces of the upper substrate, in particular, the pad part of the lower substrate 110. The first non-display area refers to a region corresponding to one side on which the 130 is formed. The first protrusion 122 and the second protrusion 123 protruding in a relatively outward direction may be included.

Accordingly, the pad part 130 is exposed to the outside through a space formed by the first protrusion 122, the cut part 121, and the second protrusion 123.

Here, the cutting part 121 is formed to a size to which the connection part 700 connected to the main board 800 may be attached to the pad part 130 exposed to the outside by the cutting part.

In addition, the cut portion 121 may be configured in various forms that the pad portion 130 can be exposed.

That is, FIG. 5 illustrates various upper substrates 120 having different shapes of the cut portions 121.

First, in FIG. 5A, the upper substrate 120 of the shape is formed at a right angle with the angle θ formed by the cut portion 121 and the first protrusion 122 or the second protrusion 123. . That is, the left and right side surfaces of the first protrusion 122 and the second protrusion 123 form a straight line, and the straight line forms a right angle (90 degrees) with the cut surface forming the cut portion 121.

As another example, in FIG. 5B, an upper portion having an angle θ formed by the cut portion 121, the first protrusion 122, or the second protrusion 123 is smaller than 90 degrees. Substrate 120 is shown. That is, the side of the first protrusion 122 and the second protrusion 123 adjacent to the cut portion is inclined with the cut portion 121.

As another example, in FIG. 5C, the upper substrate 120 having a shape in which the cut portion 121 and the first protrusion 122 or the second protrusion 123 are rounded is illustrated. That is, the side of the first protrusion 122 and the second protrusion 123 adjacent to the cut portion is configured to round with the cut portion 121.

Here, the angle θ formed by the cut portion 121 and the first protrusion 122 or the second protrusion 123 is preferably smaller than 90 degrees and larger than 45 degrees, but may be formed outside the above range.

On the other hand, the cut portion 121 and the first protrusion 122 or the second protrusion 123 may be configured in various forms in addition to the above-described form.

In addition, the width α of the first protrusion 122 or the second protrusion 123 may be configured to have various lengths according to the width of the pad 130.

In addition, the width α of the first protrusion 122 and the second protrusion 123 may be formed differently. That is, as shown in FIG. 3, the width of the outer region 150 in which the gate driver 200 is formed may be longer than the width of the outer region on the opposite side where the gate driver 200 is not formed. The widths of the first protrusion 122 and the second protrusion 123 may be different from each other.

That is, the angle (θ) formed between the cut portion 121 and the protrusions 122 and 123 forming the upper substrate 120 and the width α of the protrusions 122 and 123 are the shape of the pad portion 130 and the lower substrate. And various characteristics may be set in consideration of characteristics of the upper substrate.

FIG. 6 is a perspective view illustrating a portion of a display apparatus according to the present invention, and FIG. 7 is a front view illustrating a portion of the display apparatus according to the present invention. In particular, the touch panel is mounted on the display panel in an on-cell touch manner. The display device is attached.

The display device according to the present invention is characterized in that the first non-display area adjacent to the pad portion 130 formed on the lower substrate 110 of the upper substrate 120 constituting the display panel 100 is completely. Instead of being cut, a portion of the first non-display area is recessed in the direction of the display area to form the cut portion 121, and both ends of the cut portion relatively protrude toward the outer region rather than the cut portion 121. The first protrusion 122 and the second protrusion 123 extending to the end of the substrate 110 are provided.

That is, although the portion corresponding to the pad portion 130 of the lower substrate 110 is formed of the lower substrate 110 only, first and second ends of the left and right ends of the pad portion 130 form the upper substrate 120. The 122, the second protrusion 123, and the lower substrate 110 are joined to each other.

Accordingly, the pad portion 130 of the display panel 100 of the display device according to the present invention has less cracks than the conventional display panel including only the lower substrate 110.

In this configuration, the connection part 700 connected to the pad part 130 is disposed on the bottom surface of the lower substrate 110 in a bent state as shown in FIGS. 6 and 7, and the connection part 700 is main It is connected to the board 800. Therefore, the timing controller 400 mounted on the main board 800 and the data driver 300 or the gate driver 200 formed on the display panel 100 may be electrically connected to each other.

Here, the width α of the first protrusion 122 or the second protrusion 123 may be variously set according to the width of the connection part 700 attached to the pad 130 as shown in FIG. 6. .

On the other hand, the display device according to the present invention may be applied to the case in which the touch panel 500 is configured in the in-cell touch or the display panel as described above, in particular, in the on-cell touch If configured, the effect can be maximized.

6 and 7 illustrate a display apparatus in which the touch panel 500 is attached to an upper end of the display panel 100.

In addition, a reinforcing substrate (Window) 910 is attached to the top of the touch panel 500 to protect the touch panel 500. In FIG. 7, the touch panel 500 and the signal processing unit 600 or the touch panel ( A connection line for connecting the timing controller 400 of the main board 800 and the 500 is shown.

That is, in the case of the display device to which the on-cell touch panel 500 is applied, the touch panel 500 is further stacked on the display area 140 of the display panel, and in the conventional display device, the pad is formed of only a lower substrate. Since the portion is formed relatively thinner, cracks were more likely to occur in the pad portion, and it was also vulnerable in the drop stiffness.

However, in the present invention, since a portion of the upper substrate 120 (the first protrusion 122 and the second protrusion 123) extends from both ends of the pad portion 130 to the ends of the lower substrate 110, Even when the touch panel 500 is stacked on the display panel in an on-cell touch method, the rigidity of the pad unit 130 may be increased, thereby solving the problem of cracking in the pad unit 130. Drop rigidity can be increased.

8 is a simulation showing the strength of the pad portion applied to the display device and the conventional display device according to the present invention, (a) shows the strength of the pad portion applied to the conventional display device, (b) is to the present invention It shows the strength of the pad portion applied to the display device according to. 9 is a diagram showing the results of simulation of the strength of the pad unit applied to the display device according to the present invention and the conventional display device, and the diamond part represented by the diamond is a simulation of the pad part applied to the display device according to the present invention. As a result, a square (■) indicates a simulation result of the pad unit applied to the conventional display apparatus.

First, referring to FIG. 8, it is understood that the stress of the pad portion applied to the display apparatus according to the present invention shown in (b) is lower than the stress of the pad portion applied to the conventional display apparatus shown in (a). Can be. This means that a small stress is applied to the pad part applied to the display device according to the present invention.

Next, referring to FIG. 9, the force N of the pad portion applied to the display device according to the present invention, which is represented by diamonds at all displacements, is represented by a rectangle. It can be seen that it is greater than the strength of the pad portion applied to the display device. This means that at the same displacement, the pad portion applied to the display device according to the invention can withstand a greater force.

The characteristics of the display apparatus according to the present invention as described above are summarized as follows.

The present invention extends the length of the upper substrate (the color filter substrate of the liquid crystal display device or the encapsulated glass of the organic light emitting display device) 120 to the end of the lower substrate 110 to form the display panel 100. ) And to improve the drop rigidity when the display device according to the present invention is made of a mobile terminal such as a mobile phone.

That is, the first and second ends of the upper substrate (the color filter key board or the encap glass) 120 which protrude around the driver chip formed on the pad 130 of the lower substrate 110 are formed. By covering the first protrusion 122 and the second protrusion 123, the rigidity of the display panel 100 is improved, so that the crack of the pad 130 is generated during the assembly process and the phone drop test. Can be prevented.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: display panel 110: lower substrate
120: upper substrate 121: cutting portion
122: first protrusion 123: second protrusion
130: pad portion 140: display area
150: outer region 200: gate driver
300: Data driver 400: Timing controller
500: touch panel 600: signal processing unit
700: connection part 800: main board
910: reinforced board

Claims (10)

A lower panel on which gate lines, data lines, and thin film transistors are formed, and an upper substrate for covering an upper end of the lower substrate is bonded to each other, and a display panel on which a display area for outputting an image is formed;
A pad portion having a data pad connected to the data line is formed in any one of the non-display areas formed on the outer surface of the lower substrate.
Both left and right ends of the first non-display area corresponding to the pad part of the upper substrate are connected to the ends of the lower substrate forming the pad part, and between the left and right ends of the first non-display area are external. And a concave recess in the direction of the display region. The method of claim 1,
The first non-display area is
A cutout recessed in the direction of the display area from the outside;
A first protrusion protruding in the outward direction relative to the cutout at one end of the cutout; And
And a second protrusion protruding in the outward direction relative to the cutout portion at the other end of the cutout portion. 3. The method of claim 2,
The pad unit includes:
And a display device exposed through a space formed by the first protrusion, the cutting part, and the second protrusion. 3. The method of claim 2,
And the lower substrate is electrically connected to a main board on which a timing controller for driving the display panel is mounted, through a film-shaped connection portion connected to the pad portion. 3. The method of claim 2,
And a width α of the first protrusion and the second protrusion is set according to the shape or size of the pad portion. 3. The method of claim 2,
And an angle θ formed between the cutout portion and the first protrusion or the second protrusion is smaller than 90 degrees and larger than 45 degrees. 3. The method of claim 2,
And the cutting part and the first protrusion or the second protrusion are connected in a round shape. 3. The method of claim 2,
And a width α of the first protrusion and the second protrusion is different from each other. The method of claim 1,
And a touch panel attached to an upper end of the upper substrate of the display panel to sense a touch. The method of claim 1,
And when the lower substrate and the upper substrate are bonded to each other, the pad portion is exposed by a portion of the upper substrate which is recessed between the left and right ends of the upper substrate.

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