KR102559170B1 - 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 area having signal wires at edges, and a substrate alignment mark disposed at both ends of the first pad unit and including patterns spaced apart by a predetermined distance in a first direction. According to the embodiment, short circuits between signal lines can be improved by the substrate alignment mark having a pattern structure even if the substrate alignment mark overlaps the signal line in the pad area. In addition, in the design of the substrate alignment mark, the embodiment may be free from position and size. According to the embodiment, a printed circuit board can be shared regardless of the type of display panel by means of a substrate alignment mark having a pattern structure.

Description

Printed circuit board and display device including the same {PRINTED CIRCUIT BOARD AND DISPLAY DEVICE HANING THE SAME}

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

Recently, various flat panel displays (FPDs) capable of reducing the weight and volume, which are disadvantages of cathode ray tubes, are being developed. Such a flat panel display includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting display (OLED), and an electroluminescence device (ED).

A general liquid crystal display (LCD) is a device that displays a desired image by adjusting the light transmittance of liquid crystal cells arranged in a matrix form according to image signal information. An image is formed on a display panel using light irradiated to a backlight unit.

A display device using this principle tends to have a wider range of applications due to features such as light weight, thin shape, and low power consumption drive.

According to this trend, display devices are being used in office automation devices, audio/video devices, and the like.

Since a typical liquid crystal display device is a nonmissive type display device, a backlight unit including a separate light source for irradiating light to the liquid crystal display panel is required.

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

A typical display device may constitute a display module by connecting a printed circuit board including a driver and a liquid crystal display panel.

A general display device uses an alignment mark to bond 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 such alignment marks are formed during manufacture of wires and pads to which drive signals of the liquid crystal display panel and printed circuit board are provided, they are disposed on the edge regions of the liquid crystal display panel and printed circuit board to prevent shorting of the wires and pads. A general alignment mark has a problem in that the position and size are limited by the wiring and the pad, and the alignment reliability of the liquid crystal display panel and the printed circuit board may decrease as the distance from the wiring and the pad increases.

The embodiment may provide a display device capable of improving an alignment defect between a display panel and a printed circuit board.

In addition, the embodiment may provide a display device capable of improving the design, location, and size limitations of the display panel and the alignment mark of the printed circuit board.

In an embodiment, the display device includes a display panel including a pad area having signal wires at edges, and a substrate alignment mark disposed at both ends of the first pad unit and including patterns spaced apart by a predetermined distance in a first direction. According to the embodiment, short circuits between signal lines can be improved by the substrate alignment mark having a pattern structure even if the substrate alignment mark overlaps the signal line in the pad area. In addition, in the design of the substrate alignment mark, the embodiment may be free from position and size. In the embodiment, a printed circuit board can be shared regardless of the type of display panel by means of a substrate alignment mark having a pattern structure.

According to an embodiment of the present invention, a short between signal lines can be improved by the substrate alignment mark and the temporary grounding line having a pattern structure even if at least one of the substrate alignment mark and the temporary grounding line overlaps the signal line disposed in the pad area of the display panel.

In addition, in the design of the substrate alignment mark and the temporary grounding line, the design of the substrate alignment mark and the temporary grounding line can be freed from position and size because short circuits are improved even if they overlap signal lines.

In the embodiment, the printed circuit board can be shared regardless of the type of display panel by means of the substrate alignment mark and the temporary grounding line having a pattern structure. Therefore, since the embodiment provides a common printed circuit board, manufacturing costs can be reduced.

1 is a perspective view illustrating a display device according to an exemplary embodiment.
2 is a plan view illustrating a printed circuit board according to an embodiment.
FIG. 3 is a diagram illustrating a pad area of the display panel in area A of FIG. 1 .
FIG. 4 is a view showing a pad area and a printed circuit board of the display panel in area A of FIG. 1 .
5 is a diagram illustrating signal wiring and temporary grounding line according to an embodiment.
6 is a diagram illustrating signal wiring and substrate alignment marks according to an embodiment.
7 is a diagram illustrating signal wiring and temporary grounding line according to another embodiment.
8 is a diagram illustrating signal wiring and substrate alignment marks according to another embodiment.

Advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments make the disclosure of the present invention complete, and those skilled in the art are provided to fully inform the scope of the invention, and the present invention is only defined by the scope of the claims.

Since the shape, size, ratio, angle, number, etc. disclosed in the drawings for explaining the embodiment of the present invention are exemplary, the present invention is not limited to the matters shown. Like reference numbers designate like elements throughout the specification. In addition, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

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

In interpreting the components, even if there is no separate explicit description, it is interpreted as including the error range.

In the case of a description of a positional relationship, for example, when the positional relationship of two parts is described as 'on ~', 'upon ~', 'on ~ below', 'next to', etc., one or more other parts may be located between the two parts unless 'directly' or 'directly' is used.

In the case of a description of a temporal relationship, for example, when a temporal precedence relationship is described with 'after', 'following', 'next to', 'before', etc., it may include non-continuous cases unless 'immediately' or 'directly' is used.

Although first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, 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 partially or entirely combined or combined with each other, technically various interlocking and driving are possible, and each embodiment can be implemented independently of each other or can be implemented together in a related relationship.

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 numbers indicate like elements throughout the specification.

1 is a perspective view showing 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 area of a display panel in area A of FIG.

As shown in FIGS. 1 to 4 , the display device 100 according to 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, and 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 drawing, 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 thin film transistor substrate. In the embodiment, the display panel 110 including the liquid crystal layer is described as an example, but 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 color filters, and the thin film transistor substrate may have a plurality of gate lines and a plurality of data lines disposed in a matrix form, and a thin film transistor (TFT) may be disposed in a region where the gate lines and data lines cross each other. That is, in the display panel 110, liquid crystal cells constituting pixel units are arranged in a matrix form, and an image is displayed by controlling light transmittance of the liquid crystal cells according to image signal information transmitted from a driving PCB.

The driver IC 120 and the printed circuit board 130 may be disposed in the pad area 120a. The pad region 120a may extend from the thin film transistor substrate. The pad area 120a may include a driver pad part 121, a substrate pad part 123, a signal wire 124, and a shorting bar SB.

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

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

The signal wire 124 may be electrically connected to the shorting bar SB. An arbitrary drive signal is provided to the signal wire 124 during manufacturing of the display panel 110 to determine whether the thin film transistor is driven. Also, the signal wire 124 may be connected to a test pad (not shown), and may be connected to the driver pad part 121 and the substrate pad part 123 .

The shorting bar SB may be connected to the signal wire 124 . The shorting bar SB may be disposed at an edge of the pad area 120a. The shorting bar SB may have a function of preventing static electricity failure by grounding the signal wire 124 of the pad region 120a, the driver pad part 121, the board pad part 123, and the like. Although the embodiment has been described by limiting the structure directly connected from the signal line 124, it is not limited thereto.

The pad area 120a may include a scribing line (SL) separating the shorting bar SB from the display panel 110 . The scribing line SL may be between the substrate pad part 123 and the shorting bar SB. The scribing line SL may be disposed in a first direction XX′ in which the pads of the substrate pad part 123 are arranged. The scribing line SL crosses the signal wires 124 and the signal wires 124 may be disconnected from each other. In the embodiment, the signal wire 124 may be disconnected by the scribing line SL after checking whether or not the thin film transistor is defective during manufacturing of the display panel 110 .

The printed circuit board 130 may be timely connected to the board pad part 123 after the signal wire 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 part 133, a second pad part 137, a board circuit part 135, a board alignment mark 140, and a temporary ground line 131.

The first pad part 133 may be electrically connected to the substrate pad part 123 . The first pad part 133 may directly contact the substrate pad part 123 . The first pad part 133 may be disposed on one side of the printed circuit board 130 . The first pad part 133 may further include a dummy pad, but is not limited thereto.

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

The circuit board 135 may include a power circuit, a control circuit, and the like. For example, the substrate circuit unit 135 may be a power supply circuit that generates a power supply voltage VDD, a base voltage VSS, a common voltage VCOM, a gate high voltage VGH, and a gate low voltage VGL. The circuit board 135 may include a control circuit for generating digital video data and a timing control signal. The timing control signal may include 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), and a data output enable signal (SOE).

The substrate alignment mark 140 may be included in the printed circuit board 130 to align 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 marks 140 may be disposed at both end edges of the first pad part 133 . The substrate alignment mark 140 may overlap the panel alignment mark 129 of the display panel 110 . The substrate alignment mark 140 may overlap the signal wire 124 . The substrate alignment mark 140 may have a pattern structure spaced at a predetermined interval in the first direction (X-X'). Each pattern of the substrate alignment mark 140 may be arranged side by side 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 structure as a whole in a top view. 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. According to the embodiment, even if the substrate alignment mark 140 overlaps the signal wire 124 of the pad region 120a by the first alignment pattern 141 having a pattern structure, a short circuit can be improved. In addition, in the design of the substrate alignment mark 140, the embodiment is free from position and size, and can be disposed at a position closest to the first pad part 133, so that the alignment reliability between the printed circuit board 130 and the display panel 110 can be improved.

The second alignment pattern 143 may have a rectangular structure in which the top view has a minor axis and a major 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 the first direction (XX'). 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 side by side in the second direction (YY'). According to the embodiment, a short circuit can be improved by the second alignment pattern 143 having a pattern structure including a plurality of patterns even if the substrate alignment mark 140 overlaps the signal wire 124 of the pad region 120a. In addition, in the design of the substrate alignment mark 140, the embodiment is free from position and size, and can be disposed at a position closest to the first pad part 133, so that the alignment reliability between the printed circuit board 130 and the display panel 110 can be improved.

The temporary ground line 131 may be disposed adjacent to the substrate alignment mark 140 . For example, the temporary ground line 131 may be spaced apart from the substrate alignment mark 140 by a predetermined interval. The temporary ground sight line 131 may include a function for visually checking the attachment tolerance of the coverlay. The temporary ground line 131 may be formed when the first pad part 133 and the substrate alignment mark 140 are manufactured. The temporary grounding line 131 may have a shape in which an attachment tolerance of the coverlay can be checked. For example, the temporary ground line of sight 131 may have a rectangular structure in which the top view has a minor axis and a major axis as a whole. The temporary ground line of sight 131 may have a long axis in the first direction (X-X'). The temporary ground line of sight 131 may have a pattern structure spaced apart in the first direction (X-X'). For example, the temporary ground line of sight 131 may include four patterns in the first direction (X-X'), but is not limited thereto. According to the embodiment, a short between the signal wires 124 can be improved by the temporary grounding line 131 having a pattern structure even if the temporary grounding line 131 overlaps the signal line 124 of the pad region 120a. Also, in the design of the temporary grounding line 131, the embodiment may be free from position and size.

In the embodiment, the printed circuit board 130 can be shared regardless of the type of the display panel 110 by the substrate alignment mark 140 and the temporary grounding line 131 having a pattern structure. For example, in the embodiment, even if the driver pad part 121 and the substrate pad part 123 of the pad area 120a include a plurality of dummy pads or the position of the signal line 124 is changed, even if the substrate alignment mark 140 and the temporary ground indicator line 131 are overlapped, short circuit is prevented by the pattern structure, so common use of the printed circuit board 130 can be implemented. Therefore, since the embodiment provides a common printed circuit board 130, manufacturing costs can be reduced.

5 is a diagram showing signal wiring and temporary grounding lines according to an embodiment, and FIG. 6 is a diagram showing signal wiring and substrate alignment marks according to an embodiment.

As shown in FIGS. 5 and 6, in the embodiment, detailed descriptions of each component are omitted with reference to FIGS. 1 to 4, and the relationship between the signal wire 124, the temporary grounding line 131, and the substrate alignment mark will be described.

In an embodiment, the signal wire 124 and the temporary ground sight line 131 may overlap, and the signal wire 124 and the substrate alignment mark may overlap. Here, the substrate alignment mark may include first and second alignment patterns 141 and 143 . The temporary ground line 131 and the substrate alignment mark may have a pattern structure having patterns spaced apart in a first direction (X-X').

Each of the signal wires 124 may have a first width W1 and may have a first gap I1 between adjacent signal wires 124 . Here, although the embodiment describes the signal wire 124 as an example, it is not limited thereto. For example, the signal wires 124 may be pads in a pad area.

Each pattern of the temporary ground line of sight 131 may have a second width W2, and adjacent patterns of the temporary ground line of sight 131 may have a second interval I2. The second interval I2 may be constant, but is not limited thereto. For example, the second interval I2 may be different according to positions.

In an exemplary embodiment, the second width W2 may be smaller than the first interval I1. In an embodiment, the second interval I2 may be greater than the first width W1. In the embodiment, by making the second width W2 smaller than the first interval I1 and making the second interval I2 larger than the first width W1, even if the signal wire 124 and the temporary grounding line 131 overlap, a short between the signal wires 124 can be prevented by the temporary grounding line 131.

Each of the first alignment patterns 141 may have a third width W3, and adjacent first alignment patterns 141 may have a third spacing I3. The third width W3 may be the width of each pattern. 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 increase or decrease toward both edge first patterns 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 of the first alignment pattern 141 than the center.

Each of the second alignment patterns 143 may have a fourth width W4, and adjacent second alignment patterns 143 may have a fourth spacing I4. The fourth width W4 may be the width of each pattern. 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 increase or decrease toward both edge second patterns 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 of the second alignment pattern 143 than the center.

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. In the embodiment, the third and fourth widths W3 and W4 are smaller than the first distance I1, and the third and fourth distances I3 and I4 are designed to be greater than the first width W1, so that even if the signal wiring 124 and the substrate alignment mark overlap, short circuit between the signal wiring 124 due to the substrate alignment mark can be prevented.

7 is a diagram showing signal wiring and temporary grounding lines according to another embodiment, and FIG. 8 is a diagram showing signal wiring and substrate alignment marks according to another embodiment.

As shown in FIGS. 7 and 8, in other embodiments, detailed descriptions of each component will be omitted with reference to FIGS. 1 to 4, and the relationship between the signal wire 124, the temporary grounding line 231, and the substrate alignment mark will be described.

In another embodiment, the signal wires 124 may be spaced at regular intervals in the first direction (X-X'). The temporary ground line 231 and the substrate alignment mark may have a pattern structure spaced at a predetermined interval in the first direction (X-X'). The signal wire 124 and the temporary ground line 231 may overlap, and the signal wire 124 and the substrate alignment mark may overlap, but is not limited thereto.

Each of the signal wires 124 may have a constant first width W1, and adjacent signal wires 124 may have a constant first pitch P1. The first width W1 may be smaller than the first pitch P1. Here, although the embodiment describes the signal wire 124 as an example, it is not limited thereto. For example, the signal wires 124 may be pads of a driver pad part.

Each pattern of the temporary grounding line 231 may have a fifth constant width W5, and adjacent patterns of the temporary grounding line 231 may have a constant second pitch P2. The fifth width W5 may be the same as the distance between the adjacent temporary grounding line 231 . The fifth width W5 may be smaller than the second pitch P2.

Another embodiment shows the first pitch P1 of the signal wiring 124 and the second pitch P2 of the interceptor gaze 231, and the first width W1 of each of the signal wiring 124 is smaller than the fifth width W5 of each pattern of the molding gaze 231, and the fifth width W5 is the adjacent macral gaze. (231) It can be the same as the interval between the pattern. Also, the first pitch P1 may be greater than the fifth width W5. Therefore, in another embodiment, even if the signal wire 124 and the temporary grounding line 231 overlap, a short between the signal wires 124 caused by the temporary grounding line 231 can be prevented.

The substrate alignment mark may include first and second alignment patterns 241 and 243 . The first and second alignment patterns 241 and 243 may be spaced apart at regular intervals 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 the same as the pattern spacing of the adjacent first alignment patterns 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 patterns 243 may have a constant fourth pitch P4. The seventh width W7 may be the same as the pattern spacing of the adjacent second alignment patterns 243 . The seventh width W7 may be smaller than the fourth pitch P4 .

In another embodiment, 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 wire 124 .

In another embodiment, the first pitch P1 of the signal line 124 and the third and fourth pitches P3 and P4 of the first and second alignment patterns 241 and 243 are the same, the first width W1 of each signal line 124 is smaller than the sixth and seventh widths W6 and W7 of the first and second alignment patterns 241 and 243, and the sixth width W6 ) may be equal to the pattern interval of the adjacent first alignment patterns 241, and the seventh width W7 may be equal to the pattern interval of the adjacent second alignment patterns 243. Also, the first pitch P1 may be greater than the sixth and seventh widths W6 and W7. Therefore, in another embodiment, even if the signal wire 124 and the first and second alignment patterns 241 and 243 overlap with each other due to the structure of the signal wire 124 and the first and second alignment patterns 241 and 243, a short circuit between the signal wires 124 due to the first and second alignment patterns 241 and 243 can be prevented. In another embodiment, in designing the design of the temporary ground line 231 and the first and second alignment patterns 241 and 243, the position and size may be freed. In addition, in another embodiment, the printed circuit board can be shared regardless of the type of display panel. For example, in the embodiment, even if the driver pad part and the substrate pad part of the pad area include a plurality of dummy pads or the position of the signal line 124 is changed so that it overlaps the substrate alignment mark and the temporary grounding line 231, the pattern structure of the substrate alignment mark and the temporary grounding line 231 prevents a short circuit between the signal lines 124, thereby realizing common use of the printed circuit board. thus. Another embodiment can reduce manufacturing cost because it provides a common printed circuit board.

Features, structures, effects, etc. described in the embodiments above are included in at least one embodiment, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified with respect to other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to these combinations and modifications should be construed as being included in the scope of the embodiments.

Although the above has been described with reference to the embodiments, these are merely examples and are not intended to limit the embodiments, and those skilled in the art in the field to which the embodiments belong will be aware that various modifications and applications not exemplified above are possible without departing from the essential characteristics of the present embodiment. For example, each component specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the embodiments set forth in the appended claims.

131: temporary ground line
140: substrate alignment mark
141: first alignment pattern
143: second alignment pattern

Claims (14)

a first pad part; and
A substrate alignment mark disposed at both ends of the first pad part and including patterns spaced apart in a first direction parallel to the disposition direction of the first pad part,
The substrate alignment mark includes first and second alignment patterns,
The first alignment pattern has a circular top view as a whole, and includes patterns spaced apart in the first direction and arranged side by side in a second direction orthogonal to the first direction,
The second alignment pattern has a rectangular structure having a minor axis and a major axis as a whole in a top view, and includes patterns spaced apart in the first direction and arranged side by side in the second direction.
According to claim 1,
The printed circuit board of claim 1 , wherein the spaced apart patterns of the first alignment pattern have a shorter length in the second direction toward both side edge patterns.
According to claim 1,
The first and second alignment patterns are spaced apart in the second direction of the printed circuit board.
According to claim 1,
The printed circuit board further comprising a temporary grounding line spaced apart from the substrate alignment mark to check the attachment tolerance of the coverlay.
According to claim 4,
The temporary ground line of sight has a rectangular structure having a minor axis and a major axis as a whole in a top view, and includes patterns spaced apart in the first direction.
a display panel including a pad area at an edge; and
A printed circuit board including a first pad portion 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 a disposition direction of the first pad portion,
The pad area includes a signal line,
The substrate alignment mark includes first and second alignment patterns,
The first alignment pattern has a circular top view as a whole, and includes patterns spaced apart in the first direction and arranged side by side in a second direction orthogonal to the first direction,
The second alignment pattern has a rectangular structure having a minor axis and a major axis as a whole in a top view, and includes patterns spaced apart in the first direction and arranged side by side in the second direction.
According to claim 6,
The display device of claim 1 , wherein the spaced apart patterns of the first alignment pattern have shorter lengths in the second direction toward both side edge patterns.
According to claim 6,
The first and second alignment patterns are spaced apart in the second direction.
According to claim 6,
The display device further comprises a temporary grounding line spaced apart from the substrate alignment mark in order to check the attachment tolerance of the coverlay.
According to claim 9,
The temporary ground line of sight has a rectangular structure having a minor axis and a major axis as a whole in a top view, and includes patterns spaced apart in the first direction.
According to claim 9,
The signal wire has a first width, and has a first gap between adjacent signal wires,
The temporary grounding line of sight has a second width, and a second distance between adjacent patterns of the temporary grounding line of sight,
The second width is smaller than the first interval, and the second interval is larger than the first width.
According to claim 7,
The signal wire has a first width, and has a first gap between adjacent signal wires,
The first alignment pattern has a third width, and a third spacing between adjacent patterns of the first alignment pattern;
The second alignment pattern has a fourth width, and a fourth spacing between adjacent patterns of the second alignment pattern;
The third and fourth widths are smaller than the first interval, and the third and fourth intervals are larger than the first width.
According to claim 9,
The signal wires have a first width, the adjacent signal wires have a constant first pitch,
The temporary ground line of sight has a fifth width, and adjacent patterns of the temporary ground line of sight have a constant second pitch,
The first and second pitches are the same, the first width is smaller than the fifth width, and the fifth width is equal to a gap between the patterns of the temporary ground line.
According to claim 7,
The signal wires have a first width, the adjacent signal wires have a constant first pitch,
The first alignment pattern has a sixth width, and the adjacent first alignment patterns have a constant third pitch;
The second alignment patterns have a seventh width, and adjacent second alignment patterns have a constant fourth pitch;
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 patterns of the first alignment pattern, and the seventh width is the same as the spacing between patterns of the second alignment pattern Display device.

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