KR20170071098A - Printed circuit board and display device haning the same - Google Patents

Abstract

In an embodiment, the display device includes a display panel including a pad region having signal wirings at the edges, and a substrate alignment mark disposed at both ends of the first pad portion and including patterns spaced apart in a first direction . The embodiment can improve a short between signal wirings even if the substrate alignment mark overlaps the signal wirings of the pad area by the substrate alignment mark of the pattern structure. Further, the embodiment can be free from position and size in the design design of the substrate alignment marks. In the embodiment, the printed circuit board can be shared regardless of the type of the display panel by the substrate alignment mark of the pattern structure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a printed circuit board

The present invention relates to a printed circuit board and a display device including the same.

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.

Since a general liquid crystal display device is a non-emissive type display device, a backlight unit including a separate light source for irradiating light to the liquid crystal display panel is required.

A typical backlight unit includes a light source, a light guide plate, and optical sheets, and the light source, the light guide plate, and the optical sheets may be fastened to a rectangular panel-shaped guide panel.

In a typical display device, a printed circuit board including a driving unit and a liquid crystal display panel are connected to each other to form a display module.

A typical display device uses an alignment mark for bonding a printed circuit board and a liquid crystal display panel, and the alignment mark uses a copper foil or the like for the liquid crystal display panel and the printed circuit board. Since the alignment marks are formed at the time of manufacturing wirings and pads provided with driving signals for the liquid crystal display panel and the printed circuit board, they are disposed in the edge regions of the liquid crystal display panel and the printed circuit board in order to prevent shorting of wirings and pads . There is a problem that a general alignment mark is limited in position and size by the wiring and the pad, and there is a problem that the reliability of the alignment of the liquid crystal display panel and the printed circuit board may deteriorate as the distance from the wiring and the pad is deteriorated.

The embodiment can provide a display device capable of improving alignment defects of a display panel and a printed circuit board.

Further, the embodiment can provide a display device capable of improving the design, position and size limitation of the alignment marks of the display panel and the printed circuit board.

In an embodiment, the display device includes a display panel including a pad region having signal wirings at the edges, and a substrate alignment mark disposed at both ends of the first pad portion and including patterns spaced apart in a first direction . The embodiment can improve a short between signal wirings even if the substrate alignment mark overlaps the signal wirings of the pad area by the substrate alignment mark of the pattern structure. Further, the embodiment can be free from position and size in the design design of the substrate alignment marks. The embodiment can share the printed circuit board regardless of the type of the display panel by the substrate alignment mark of the pattern structure.

Even when at least one of the substrate alignment mark and the ground line is superimposed on the signal wiring arranged in the pad area of the display panel by the substrate alignment mark of the pattern structure and the grounding line of the pattern structure, The shot can be improved.

Further, in the design of the substrate alignment mark and the grounding line, the embodiment can be free from position and size because it improves the shot even if it overlaps the signal wiring.

The embodiment can share the printed circuit board regardless of the type of the display panel by the substrate alignment mark of the pattern structure and the ground line. Thus, the embodiment provides a printed circuit board for common use, so that the manufacturing cost can be reduced.

1 is a perspective view showing a display device according to an embodiment.
2 is a plan view showing a printed circuit board according to an embodiment.
3 is a view showing a pad area of a display panel in area A of Fig.
4 is a view showing a pad area and a printed circuit board of a display panel of area A in Fig.
5 is a view showing a signal line and a ground line according to the embodiment.
6 is a diagram showing signal lines and substrate alignment marks according to the embodiment.
7 is a view showing a signal line and a ground line according to another embodiment.
8 is a diagram showing signal lines and substrate alignment marks 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 concept of the invention to those skilled in the art. To fully disclose the scope of the invention to a person 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.

FIG. 1 is a perspective view illustrating a display device according to an embodiment, FIG. 2 is a plan view showing a printed circuit board according to an embodiment, FIG. 3 is a view showing a pad region of a display panel in region A of FIG. 1 And Fig. 4 is a view showing a pad area and a printed circuit board of the display panel in area A of Fig.

1 to 4, the display device 100 of the embodiment may include a display panel 110 and a printed circuit board 130. [

The display panel 110 may be divided into a display area and a non-display area. The non-display area may include a pad area 120a connected to the driver IC 120 and the printed circuit board 130.

Although not shown in detail in the drawings, the display panel 110 may include a color filter substrate and a thin film transistor substrate facing each other, and a liquid crystal layer between the color filter substrate and the TFT substrate. In the embodiment, the display panel 110 including the liquid crystal layer is described as an example, but the present invention is not limited thereto. For example, the display panel 110 may be an organic light emitting display panel. The color filter substrate may include a black matrix and a color filter. In the thin film transistor substrate, a plurality of gate lines and a plurality of data lines may be arranged in a matrix, (Thin Film Transistor) may be disposed. That is, in the display panel 110, the liquid crystal cells constituting the pixel unit are arranged in a matrix form, and the liquid crystal cells control the light transmittance according to the image signal information transmitted from the driving PCB, thereby displaying an image.

The driver IC 120 and the printed circuit board 130 may be disposed in the pad region 120a. The pad region 120a may extend from the thin film transistor substrate. The pad region 120a may include a driver pad portion 21, a substrate pad portion 123, a signal line 124, and a shorting bar SB.

The driver pad unit 121 may be electrically connected to the driver IC 120.

The substrate pad part 123 may be electrically connected to the printed circuit board 130.

The signal line 124 may be electrically connected to the shorting bar SB. The signal line 124 may be provided with an arbitrary drive signal during manufacture of the display panel 110 to determine whether the thin film transistor is driven. The signal line 124 may be connected to a test pad (not shown) and may be connected to the driver pad portion 121 and the substrate pad portion 123.

The shorting bar SB may be connected to the signal line 124. The shorting bar SB may be disposed at an edge of the pad region 120a. The shorting bar SB may include a function of preventing a static electricity failure by grounding the signal line 124, the driver pad 121, and the substrate pad 123 of the pad region 120a. Although the embodiment has been described with a structure that is directly connected to the signal wiring 124, it is not limited thereto. remind

The pad region 120a may include a scribing line (SL) separating the display panel (SB) from the display panel (110). The scribing line SL may be between the substrate pad 123 and the shorting bar SB. The scribing line SL may be disposed in a first direction X-X 'in which pads of the substrate pad part 123 are arranged. The signal line 124 may be disconnected from the scribing line SL across the signal line 124. The signal line 124 may be disconnected by the scribing line SL after confirming the presence or absence of defects of the thin film transistor during the manufacture of the display panel 110. [

The printed circuit board 130 may be periodically connected to the substrate pad 123 after the signal line 124 is disconnected by the scribing line SL. The printed circuit board 130 may be a flexible printed circuit board (FPCB), but is not limited thereto. For example, the printed circuit board 130 may be a tape carrier package (TCP) or a chip on film (COF). The printed circuit board 130 may include a first pad portion 133, a second pad portion 137, a substrate circuit portion 135, a substrate alignment mark 140, and a ground line 131.

The first pad portion 133 may be electrically connected to the substrate pad portion 123. The first pad portion 133 may be in direct contact with the substrate pad portion 123. The first pad portion 133 may be disposed on one side of the printed circuit board 130. The first pad portion 133 may further include a derby pad, but the present invention is not limited thereto.

The second pad portion 137 may be disposed on the other side. The second pad unit 137 may be electrically connected to a system (not shown). The second pad portion 137 may be electrically connected to the system.

The substrate circuit section 135 may include a power supply circuit, a control circuit, and the like. For example, the substrate circuit section 135 may include a power supply circuit for generating a power supply voltage VDD, a base voltage VSS, a common voltage VCOM, a gate high voltage VGH, a gate low voltage VGL, and the like. The substrate circuit portion 135 may include a control circuit for generating 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 substrate alignment mark 140 may be included in the printed circuit board 130 for aligning the printed circuit board 130 and the display panel 110. The substrate alignment mark 140 may be disposed on one side of the printed circuit board 130. The substrate alignment mark 140 may correspond to the panel alignment mark 129 of the display panel 110. The substrate alignment mark 140 may be disposed at both edges of the first pad portion 133. The substrate alignment mark 140 may overlap the panel alignment mark 129 of the display panel 110. The substrate alignment marks 140 may overlap the signal lines 124. The substrate alignment marks 140 may have a pattern structure spaced apart in the first direction (X-X '). The substrate alignment marks 140 may be arranged in a second direction Y-Y 'orthogonal to the first direction X-X'. The substrate alignment mark 140 may include a first alignment pattern 141 and a second alignment pattern 143.

The first alignment pattern 141 may have a circular shape as a whole. The first alignment pattern 141 may overlap the first panel alignment mark 129a. The first alignment pattern 141 may include patterns. For example, the first alignment pattern 141 includes four patterns, but is not limited thereto. The embodiment can improve the shot even if the substrate alignment mark 140 overlaps the signal wiring 124 of the pad region 120a by the first alignment pattern 141 having the pattern structure. Since the embodiment is free from position and size in the design design of the substrate alignment mark 140 and can be disposed at a position as close as possible to the first pad portion 133, It is possible to improve the reliability of the alignment between the first substrate 110 and the second substrate 110.

The second alignment pattern 143 may be a quadrangular structure having a short axis and a long axis as a whole. The second alignment pattern 143 may overlap the second panel alignment mark 129b. The second alignment pattern 143 may have a long axis in a first direction X-X '. The second alignment pattern 143 may have a plurality of pattern structures. For example, the second alignment pattern 143 may include four patterns, but is not limited thereto. The patterns of the second alignment pattern 143 and the patterns of the first alignment pattern 141 may be arranged in parallel with each other in the second direction Y-Y '. The embodiment can improve the short circuit even if the substrate alignment mark 140 overlaps the signal wiring 124 of the pad region 120a by the second alignment pattern 143 of the pattern structure including the plurality of patterns have. Since the embodiment is free from position and size in the design design of the substrate alignment mark 140 and can be disposed at a position as close as possible to the first pad portion 133, It is possible to improve the reliability of the alignment between the first substrate 110 and the second substrate 110.

The ground line 131 may be disposed adjacent to the substrate alignment mark 140. For example, the ground line 131 may be separated from the substrate alignment mark 140 by a predetermined distance. The ground line 131 may include a function for visually confirming the attachment tolerance of the coverlay. The ground line 131 may be formed at the time of manufacturing the first pad portion 133 and the substrate alignment mark 140. The ground line 131 may be a shape that can confirm the attachment tolerance of the coverlay. For example, the above-mentioned ground line 131 may be a quadrangular structure in which the top view as a whole has a short axis and a long axis. The ground line 131 may be long in the first direction X-X '. The ground line 131 may have a pattern structure spaced apart in the first direction X-X '. For example, the ground line 131 may include four patterns in a first direction (X-X '), but the present invention is not limited thereto. The embodiment can improve the short circuit between the signal lines 124 even if the ground line 131 overlaps the signal line 124 of the pad region 120a by the ground line 131 of the pattern structure . In addition, the embodiment can be free from position and size in the design design of the earthing line 131.

The embodiment can share the printed circuit board 130 regardless of the type of the display panel 110 by the substrate alignment marks 140 and the ground lines 131 of the pattern structure. For example, in the embodiment, the driver pad portion 121 and the substrate pad portion 123 of the pad region 120a include a plurality of dummy pads or the substrate alignment mark 140, even if the position of the signal wiring 124 is changed, And the ground line 131 are overlapped with each other, a short circuit is prevented by the pattern structure, so that the printed circuit board 130 can be commonly used. Thus, the embodiment provides a common printed circuit board 130, which can reduce manufacturing costs.

FIG. 5 is a view showing a signal line and a ground line according to the embodiment, and FIG. 6 is a view showing a signal line and a substrate alignment mark according to the embodiment.

5 and 6, the embodiment will not be described in detail with reference to FIGS. 1 to 4, and the signal wiring 124, the ground line 131, and the substrate alignment mark Explain the relationship.

In the embodiment, the signal line 124 and the ground line 131 may overlap, and the signal line 124 and the substrate alignment mark may overlap. Here, the substrate alignment marks may include first and second alignment patterns 141 and 143. [ The ground line 131 and the substrate alignment mark may have a pattern structure having patterns spaced in a first direction X-X '.

Each of the signal wirings 124 may have a first width W1 and may have a first interval I1 between adjacent signal wirings 124. [ Although the signal wiring 124 is described as an example in the embodiment, the present invention is not limited thereto. For example, the signal line 124 may be pads of a pad region.

Each of the patterns of the ground lines 131 may have a second width W2 and the patterns of the adjacent ground lines 131 may have a second distance I2. The second interval I2 may be constant but is not limited thereto. For example, the second interval I2 may be different depending on the position.

The second width W2 of the embodiment may be smaller than the first interval I1. In an embodiment, the second interval W2 may be greater than the first width W1. The embodiment is characterized in that the second width W2 is smaller than the first distance I1 and the second distance I2 is larger than the first width W1 so that the signal line 124 and the ground line The signal line 124 can be prevented from being short-circuited by the ground line 131 even if the signal lines 124 and 131 overlap each other.

Each of the first alignment patterns 141 may have a third width W3 and adjacent first alignment patterns 141 may have a third spacing W3. The third width W3 may be a width of each of the patterns. The third width W3 may be constant but is not limited thereto. For example, the third width W3 of the first alignment pattern 141 may be larger or smaller as the first side pattern 141a. The third interval I3 may be constant, but is not limited thereto. For example, the third interval I3 may be larger or smaller toward the edge than the center of the first alignment pattern 141. [

Each of the second alignment patterns 143 may have a fourth width W4 and adjacent second alignment patterns 143 may have a fourth spacing W4. The fourth width W4 may be a width of each of the patterns. The fourth width W4 may be constant but is not limited thereto. For example, the fourth width W4 of the second alignment pattern 143 may be larger or smaller as the second side edge second pattern 143a. The fourth interval I4 may be constant, but is not limited thereto. For example, the fourth interval I4 may be larger or smaller toward the edge than the center of the second alignment pattern 143. [

The third and fourth widths W3 and W4 of the embodiment may be smaller than the first interval I1. In an embodiment, the third and fourth intervals I3 and I4 may be greater than the first width W1. The third and fourth widths W3 and W4 of the embodiment are smaller than the first interval I1 and the third and fourth intervals I3 and I4 are designed to be larger than the first width W1, It is possible to prevent a short circuit between the signal lines 124 due to the substrate alignment marks even if the wiring lines 124 and the substrate alignment marks overlap each other.

FIG. 7 is a view showing a signal line and a ground line according to another embodiment, and FIG. 8 is a view showing a signal line and a substrate alignment mark according to another embodiment.

7 and 8, the other embodiments will be described with reference to FIGS. 1 to 4, and detailed descriptions of the configurations will be omitted. The signal line 124, the ground line 231, and the substrate alignment mark .

In another embodiment, the signal lines 124 may be spaced apart from each other in the first direction X-X '. The ground line 231 and the substrate alignment mark may have a pattern structure spaced a predetermined distance in the first direction X-X '. The signal line 124 and the ground line 231 may overlap, and the signal line 124 and the substrate alignment mark may overlap, but the present invention is not limited thereto.

Each of the signal wirings 124 may have a constant first width W1 and adjacent signal wirings 124 may have a constant first pitch P1. The first width W1 may be smaller than the first pitch P1. Although the signal wiring 124 is described as an example in the embodiment, the present invention is not limited thereto. For example, the signal wiring 124 may be pads of the driver pad portion.

The pattern of each of the ground lines 231 may have a constant fifth width W5 and the patterns of the adjacent ground lines 231 may have a constant second pitch P2. The fifth width W5 may be the same as the interval between adjacent ground lines 231. The fifth width W5 may be smaller than the second pitch P2.

The first pitch P1 of the signal line 124 and the second pitch P2 of the ground line 231 are the same and the first width W1 of each of the signal lines 124 is the same. May be smaller than the fifth width W5 of each of the patterns of the ground lines 231 and the fifth width W5 may be the same as the distance between the adjacent patterns of the ground lines 231. [ Also, the first pitch P1 may be greater than the fifth width W5. Therefore, another embodiment can prevent a short circuit between the signal line 124 and the ground line 231 even if the signal line 124 and the ground line 231 overlap each other.

The substrate alignment marks may include first and second alignment patterns 241 and 243. The first and second alignment patterns 241 and 243 may be spaced apart from each other by a predetermined distance in a second direction Y-Y 'orthogonal to the first direction X-X'. Each of the first alignment patterns 241 may have a sixth width W6 and the first alignment patterns 241 may have a constant third pitch P3. The sixth width W6 may be equal to the pattern spacing of the adjacent first alignment pattern 241. [ The sixth width W6 may be smaller than the third pitch 9C.

Each of the second alignment patterns 243 may have a seventh width W7 and the second alignment pattern 243 may have a constant fourth pitch P4. The seventh width W7 may be equal to the pattern interval of the adjacent second alignment pattern 243. The seventh width W7 may be smaller than the fourth pitch P4.

The third and fourth pitches P3 and P4 of the first and second alignment patterns 241 and 243 may be the same as the first pitch P1 of the signal line 124 in another embodiment.

In another embodiment, the first pitch P1 of the signal line 124 is equal to the third and fourth pitches P3 and P4 of the first and second alignment patterns 241 and 243, The first width W1 of each of the wirings 124 is smaller than the sixth and seventh widths W6 and W7 of each of the first and second alignment patterns 241 and 243, And the seventh width W7 may be the same as the pattern interval of the adjacent second alignment pattern 243. In this case, In addition, the first pitch P1 may be larger than the sixth and seventh widths W6 and W7. Therefore, in another embodiment, the signal wiring 124, the first and second alignment patterns 241 and 242 are formed by the structure of the signal wiring 124, the first and second alignment patterns 241 and 243, 243 are overlapped, a short circuit between the signal lines 124 due to the first and second alignment patterns 241, 243 can be prevented. Other embodiments may be free of position and size in the design design of the earthing line 231, the first and second alignment patterns 241, 243. In another embodiment, the printed circuit board can be shared regardless of the type of the display panel. For example, in the embodiment, the driver pad portion and the substrate pad portion of the pad region include a plurality of dummy pads or the position of the signal line 124 is changed so that the substrate alignment marks and the substrate alignment marks 231 overlap with each other, The pattern structure of the in-mark and the ground line 231 prevents a short between the signal lines 124, thereby realizing the common use of the printed circuit board. therefore. Other embodiments provide a printed circuit board for common use, thereby reducing manufacturing costs.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments can be combined and modified by other persons having ordinary skill 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.

131: is grounded
140: substrate alignment marks
141: 1st alignment pattern
143: 2nd alignment pattern

Claims (14)

A first pad portion; And
And a substrate alignment mark disposed at both ends of the first pad portion and including patterns spaced apart from each other by a predetermined distance in a first direction parallel to an arrangement direction of the first pad portion.
The method according to claim 1,
Wherein the substrate alignment marks comprise first and second alignment patterns,
Wherein the first alignment pattern comprises a pattern having a generally circular top view and spaced apart in the first direction,
Wherein the second alignment pattern is a quadrangular structure with a top view as a whole having a minor axis and a major axis, the patterns being spaced apart in the first direction.
3. The method of claim 2,
Wherein the first and second alignment patterns are spaced apart from each other by a predetermined distance in a second direction orthogonal to the first direction.
The method according to claim 1,
Further comprising: a ground eye line spaced apart from the substrate alignment mark by a predetermined distance.
5. The method of claim 4,
Wherein the ground line is a quadrangular structure with a top view as a whole having a minor axis and a major axis, the patterns being spaced apart in the first direction.
A display panel including a pad area at an edge; And
And a substrate alignment mark disposed at both ends of the first pad portion and including patterns spaced apart in a first direction parallel to the arrangement direction of the first pad portion,
And a signal wiring is formed in the pad region.
The method according to claim 6,
Wherein the substrate alignment marks comprise first and second alignment patterns,
Wherein the first alignment pattern comprises a pattern having a generally circular top view and spaced apart in the first direction,
Wherein the second alignment pattern is a quadrangular structure with a top view as a whole having a short axis and a long axis, and the patterns are spaced apart in the first direction.
8. The method of claim 7,
Wherein the first and second alignment patterns are spaced apart from each other by a predetermined distance in a second direction orthogonal to the first direction.
The method according to claim 6,
Further comprising a line of sight that is spaced apart from the substrate alignment mark by a predetermined distance.
10. The method of claim 9,
Wherein the ground line is a quadrangular structure with a top view as a whole having a short axis and a long axis, and the patterns are spaced apart in the first direction.
10. The method of claim 9,
Wherein the signal wiring has a first width and has a first gap between adjacent signal wirings,
Wherein the second ground line has a second width, the adjacent second ground line has a second gap between the patterns,
Wherein the second width is smaller than the first spacing, and the second spacing is larger than the first width.
8. The method of claim 7,
Wherein the signal wiring has a first width and has a first gap between adjacent signal wirings,
Wherein the first alignment pattern has a third width and has a third spacing between the adjacent patterns of the first alignment pattern,
Wherein the second alignment pattern has a fourth width, a fourth gap between the adjacent patterns of the second alignment pattern,
Wherein the third and fourth widths are smaller than the first spacing and the third and fourth spacing are larger than the first width.
10. The method of claim 9,
The signal wiring has a first width, the adjacent signal wirings have a constant first pitch,
Wherein the ground contact line has a fifth width, the adjacent patterns of the ground contact line have a constant second pitch,
Wherein the first and second pitches are the same, the first width is less than the fifth width, and the fifth width is the distance between the patterns of the ground line.
8. The method of claim 7,
The signal wiring has a first width, the adjacent signal wirings have a constant first pitch,
Wherein the first alignment pattern has a sixth width, adjacent first alignment patterns have a constant third pitch,
Wherein the second alignment pattern has a seventh width and the adjacent second alignment patterns have a constant fourth pitch,
Wherein the first, third and fourth pitches are the same, the first width is smaller than the sixth and seventh widths, the sixth width is equal to the spacing between the patterns of the first alignment pattern, 7 width is the spacing between the patterns of the second alignment pattern.

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