JP2009176198A - Display device with touch panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device with a touch panel capable of emitting input points by the touch panel itself. <P>SOLUTION: The display device includes the touch panel having a pair of substrates comprising electrodes on opposing sides and a spacer holding a gap between the pair of substrates, and a display panel arranged on the backside of the touch panel. The display device has an organic EL element arranged on the other substrate of the pair of substrates. The spacer is arranged on the organic EL element. The pair of substrates consists of resin. The electrode of one substrate of the pair of substrates is formed on resin, being a plurality of metal wires extending in the first direction. Each metal wire is a ladder-shaped metal wire consisting of two straight line parts extending in the first direction and short circuit parts formed between the two straight line parts. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device with a touch panel, and more particularly, to a display device with a touch panel provided with a touch panel that can emit a detection point by the touch panel itself.

As a main method of a conventional touch panel, there are a method for detecting a change in light and a method for detecting a change in electrical characteristics. Among these, the method of detecting a change in light has a problem that the detection accuracy is not stable.
Conventionally, there are a resistance film method and a capacitance method as a method for detecting a change in electrical characteristics. FIG. 6 shows a cross-sectional structure of a conventional resistive film type touch panel.
As shown in FIG. 6, a transparent electrode (TLINE) covering the entire detection region is formed on a glass substrate (GSUB), and the transparent electrode (TLINE) is also formed on a resin film (RESIN) having light transparency on the other side. It has a structure in which a film is formed and bonded so as to face a transparent electrode on a glass substrate (GSUB). A transparent spacer (SPACER) is installed in the surface so that each transparent electrode (TLINE) does not short-circuit, and a certain interval (several to several tens of μm) is maintained.
In this resistive film method, since the transparent electrode has a high resistance, the input point, that is, the contact position of the upper and lower transparent electrodes is detected in a one-dimensional manner using the potential difference of the voltage applied to the transparent electrode. Two-dimensional coordinates are calculated by performing voltage application and potential difference detection twice with the X and Y axes.

However, this resistive film system has the following problems (A) to (K).
(A) This driving principle applies high resistance characteristics due to the fact that the transparent electrode is a metal oxide. Therefore, in the case of a low resistance film, the voltage drop is reduced and detection is impossible.
(B) Since the transparent electrode has a high resistance, it is difficult to increase the size, and the practical size limit is considered to be 17 inches (about 200 × 300 mm).
(C) Detecting two or more input points requires the detection frequency to be doubled or more, and the detection accuracy is lowered.
(D) Cost is required for patterning and film formation of the transparent electrode.
(E) The transmittance is about 75 to 80% due to the problem of optical transmittance of the transparent electrode.
(F) Usually, a part of the touch panel is intensively used. In particular, in the case of input with a touch pen, a finger, etc., those external forces are concentrated on the input coordinates. Since the transparent electrode bends around the input coordinates due to the external force, the transparent electrodes near the input coordinates are easily damaged.
(G) Since the transparent electrode is generally a metal oxide, there is a problem in life reliability because deterioration accompanying an increase in resistance of the electrode itself is inevitable.
(H) Since the voltage drop needs to be detected in analog, the cost of the circuit is high.
(I) The cost of the flexible cable connecting the transparent electrode and the circuit is high.
(J) Resistance increases due to current flowing through the transparent electrode.
(K) Since the transparent electrode is not transparent, it is colored and the color range of the display panel is shifted.
In view of these problems, the present applicant has already proposed a touch panel that employs a new detection structure. (See Patent Document 1 below)

Japanese Patent Application No. 2007-14984

The touch panel described in Patent Document 1 includes a pair of substrates having electrodes on opposite surfaces and a spacer that holds a gap between the pair of substrates, and one of the pair of substrates is formed on a resin. It has the metal wiring formed in this.
In the touch panel described in Patent Document 1, it is possible to obtain actions and effects such as “a plurality of points can be detected simultaneously because of using an addressed metal wiring.” Did not emit light.
Then, this invention is providing the display apparatus with a touch panel which can make an input point light-emit with touch panel itself.
The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

Of the inventions disclosed in this application, the outline of typical ones will be briefly described as follows.
(1) A display device with a touch panel, comprising: a touch panel having a pair of substrates provided with electrodes on opposing surfaces; a spacer that holds a gap between the pair of substrates; and a display panel disposed on the back surface of the touch panel. The organic EL element is disposed on the other of the pair of substrates, the spacer is disposed on the organic EL element, the pair of substrates is made of a resin, The electrodes of one of the substrates are a plurality of metal wirings formed on the resin and extending in the first direction.
(2) In (1), each metal wiring on the one substrate includes a ladder including two straight portions extending in the first direction and a short-circuit portion formed between the two straight portions. It is a shape metal wiring.
(3) In (1) or (2), a polarizing plate is provided outside the one substrate.
(4) In any one of (1) to (3), the electrodes of the other substrate are formed on the resin and extend in a second direction intersecting the first direction. It is.
(5) In (4), each metal wiring on the other substrate is a ladder including two straight portions extending in the second direction and a short-circuit portion formed between the two straight portions. It is a shape metal wiring.
(6) In any one of (1) to (3), each metal wiring is blackened.

The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows.
According to the display device with a touch panel of the present invention, an input point can be emitted by the touch panel itself.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In all the drawings for explaining the embodiments, parts having the same functions are given the same reference numerals, and repeated explanation thereof is omitted.
[Overview of touch panel as a premise of the present invention]
FIG. 7 is a schematic plan view of a touch panel as a premise of the present invention. FIG. 7 is the same as the touch panel described in Patent Document 1 described above.
The touch panel shown in FIG. 7 includes a first substrate (SUB1) and a second substrate (SUB2) having a resin film made of PET (PolyEthylene Terephthalate), a first peripheral circuit (SC1), and a second substrate. A peripheral circuit (SC2), a power supply, and a detection signal output terminal are provided.
The first substrate (SUB1) and the second substrate (SUB2) are made by bonding the copper foil, which has been reduced to 10 μm or less by cold rolling, with PET film and decorative steel plate technology, and then jetting the etching solution at high temperature and high pressure. This is a flexible wiring board in which a metal wiring processed to have a taper angle of 80 to 90 degrees by an etching technique is processed into a stripe shape.
The metal wirings of the first substrate (SUB1) and the second substrate (SUB2) are arranged so that the metal wirings face each other and the extending directions of the metal wirings intersect each other.
The first peripheral circuit (SC1) is connected to the first substrate (SUB1), selects the metal wiring (MLINE) line-sequentially, and inputs a voltage from the power supply. The second peripheral circuit (SC2) is connected to the second substrate (SUB2), detects the voltage (DSIG) by selecting the metal wiring (MLINE) line-sequentially.

FIG. 8 is a cross-sectional view of the display device with a touch panel shown in FIG. This is a cross-sectional view showing the state where the touch panel of FIG. 7 is attached to the surface of the display panel in more detail.
The display device with a touch panel shown in FIG. 8 includes a display panel substrate (PSUB), a first substrate (SUB1), a second substrate (SUB2), a spacer (SPACER), and a circularly polarizing plate (CPOL). It has. The display panel substrate (PSUB) is made of alkali-free glass and is a substrate on the display surface side, such as a counter substrate of a liquid crystal display device and a sealing substrate of a top emission type organic EL display device.
The first substrate (SUB1) is bonded onto the display panel substrate (PSUB). The second substrate (SUB2) is fixed to the first substrate (SUB1) with a sealing agent (not shown) via a spacer (SPACER). The circularly polarizing plate (CPOL) is fixed on the second substrate (SUB2).
FIG. 9 shows an enlarged cross-sectional view of the first substrate (SUB1) in the AA region of FIG.
As described above, the metal wiring (MLINE) is disposed on the resin film (RESIN) made of PET. Table 1 shows trial specifications of the wiring pitch (PITCH), wiring width (WIDTH), wiring height (HEIGHT), spacer height, and resin substrate thickness of the metal wiring (MLINE).

In the touch panel shown in FIG. 7, the wiring pitch (PITCH) of the metal wiring (MLINE) is 80 to 1000 μm, the wiring width (WIDTH) is 8 to 50 μm, the wiring height (HEIGHT) is 10 to 150 μm, and the spacer (SPACER) height 5 ˜50 μm, and the resin film (RESIN) thickness can be appropriately produced from 35 to 300 μm.
In FIG. 7, a touch panel having a pair of substrates (SUB1, SUB2) having electrodes on opposite surfaces, a spacer (SPACER) that holds a gap between the pair of substrates, and a display panel disposed on the back surface of the touch panel, In the display device with a touch panel including the above, at least one substrate uses a metal wiring (MLINE) formed on a resin film (RESIN).
Accordingly, in the touch panel shown in FIG. 7, a basic recognition structure can be realized by sticking a resin film (RESIN) provided with metal wiring (MLINE) through a spacer (SPACER). A touch panel that can be input and has high durability can be manufactured at low cost.
Also, bright display cannot be realized unless the width of the metal wiring (MLINE) is made smaller than 50% of the wiring pitch of the metal wiring (MLINE). Further, since the circularly polarizing plate (CPOL) is provided outside the second substrate (SUB2), reflection of external light can be suppressed.

Further, by providing the spacer (SPACER) between the pair of substrates, the gap between the pair of substrates can be held uniformly, and the maximum width of the planar shape viewed from the substrate direction of the spacer (SPACER) Since the pitch is larger than the pitch of the wiring (MLINE), a short circuit between the opposing metal wirings (MLINE) due to deformation of the resin film (RESIN) can be prevented, and erroneous recognition of the touch panel can be suppressed. In addition, the possibility of a short circuit between the metal wirings (MLINE) can be reduced.
Further, unlike the transparent conductive film (TLINE) such as ITO, the metal wiring (MLINE) does not transmit light, so the width of the metal wiring (MLINE) must be less than 50% of the wiring pitch of the metal wiring (MLINE). , The transmittance decreases. Further, when the wiring width is 13 to 20 μm, an inexpensive milk photomask can be used.
Further, by setting the pitch of the metal wiring (MLINE) and the vertical or horizontal pitch of the display panel to the relationship shown in Table 2, occurrence of moire can be suppressed.
This metal wiring (MLINE) is an opaque metal film, and in addition to aluminum (Al), non-ferrous metals such as carbon (C), copper (Cu), stainless steel (SUS), and iron (Fe) and iron can be used. . Note that the surface of the metal wiring (MLINE) may be blackened. In addition to PET, TAC (triacetyl cellulose) can also be applied as the resin film of the first substrate (SUB1) and the second substrate (SUB2). As described above, other materials can be used as long as the film has little birefringence.

In the touch panel shown in FIG. 7, a fine wiring pattern by metal wiring (MLINE) can sufficiently achieve a definition of 300 lpi (line per inch), and in the conventional example, it is about 10 ppi (point per inch). The resolution can be improved 10 times or more. In addition, since the fine wiring pattern can be sufficiently manufactured with a width of about 10 μm and a thickness of about 10 μm, the transmittance can be improved as compared with the current resistive film type touch panel by designing the resolution to about 100 lpi. It becomes possible.
Although there is a cost problem, the metal wiring (MLINE) can be manufactured not only by etching but also by deposition or plating.

[Modification 1 of Touch Panel as Premise of the Present Invention]
FIG. 10 shows a first modification of the touch panel shown in FIG.
In this modification, the structure of the opposing detection wiring is changed. The difference from the touch panel shown in FIG. 7 is that the wiring arranged on the first substrate (SUB1) is a transparent electrode (TLINE) made of ITO, and the entire detection area is covered with the transparent electrode (TLINE). It is a point.
By using this modification, it is possible to improve reliability, detection speed, and realize a simple multipoint detection mechanism.

[Modification 2 of the touch panel as a premise of the present invention]
FIG. 11 shows a second modification of the touch panel shown in FIG.
In this modification, the structure of the opposing detection wiring is changed. The difference from the touch panel shown in FIG. 10 is that the metal wiring (MLINE) arranged on the second substrate (SUB2) has a mesh shape.
By making the fine wiring pattern into a mesh shape (cross shape), it becomes possible to form a touch panel as a replacement for the resistance film, which can contribute mainly to an improvement in detection speed and reliability. Furthermore, by performing two-dimensional patterning, a multipoint detection mechanism can be realized at high speed and with high accuracy even when combined with a conventional transparent electrode system.
Furthermore, a method of overcoating a transparent electrode (TLINE) on the metal wiring (MLINE) portion is also a costly method, but it is effective for dealing with an increase in size.

[Modification 3 of the touch panel as a premise of the present invention]
FIG. 12 shows a third modification of the touch panel shown in FIG.
The touch panel shown in FIG. 7 is different from the touch panel shown in FIG. 7 in that a terminal (PAD) for collecting a plurality of metal wirings (MLINE) is provided in order to simultaneously detect the voltages of the plurality of metal wirings (MLINE), and a detection signal is sent to each terminal. This is the output point.
If high-definition coordinate detection is not required, the recognition rate increases if a plurality of metal wires (MLINE) are combined. This modification can be applied to the striped metal wiring (MLINE) in each touch panel described above.

[Modification 4 of the touch panel as a premise of the present invention]
FIG. 13 shows a fourth modification of the touch panel shown in FIG.
The difference from the touch panel shown in FIG. 7 is that the wiring pitch is narrowed outside the detection area and the resin is extended to the external terminal. That is, the external terminal and the wiring to the external terminal (MLINEF) are formed on the resin film (RESIN) on which the metal wiring (MLINE) is formed, not on a separate substrate. Note that SEAL in FIG. 13 indicates an area that functions as a touch panel when the first substrate (SUB1) and the second substrate (SUNB2) are bonded to each other.
This modification can be applied to the striped metal wiring (MLINE) in each touch panel described above. By adopting this modification, it is possible to simultaneously form a fine wiring pattern and a flexible cable pattern for connection to a circuit. By forming the touch panel portion and the flexible cable on a single continuous resin, it is possible to reduce the number of components, improve connection reliability, and reduce costs.

[Modification 5 of the touch panel as a premise of the present invention]
FIG. 14 shows a fifth modification of the touch panel shown in FIG.
The difference from the touch panel shown in FIG. 7 is that an inner surface antireflection film (REF) composed of a thin film of SiO ₂ covering the entire detection region is disposed under the metal wiring (MLINE).
This modification can be applied to the striped metal wiring (MLINE) in each touch panel described above.
The conventional touch panel is expensive because it has a transparent electrode. However, according to this modification, the inner surface antireflection film can also be manufactured at a low cost, and both display quality and cost can be achieved.

[Example 1]
The display device with a touch panel of the embodiment of the present invention has the same configuration as the touch panel shown in FIG. 7, but in this embodiment, the periphery of the touch panel is sealed to control the space of the touch panel and to prevent condensation. Has an outside air blocking structure.
This embodiment is characterized in that an organic EL layer (OLED) is formed on a fine metal wiring (MLINE) of the first substrate (SUB1) shown in FIG.
FIG. 1 is a diagram for explaining the configuration of the first substrate (SUB1) and the second substrate (SUB2) of the present embodiment.
As shown in FIG. 1, also in this embodiment, metal wiring (MLINE) is formed on a resin film (RESIN) made of PET. In this embodiment, the metal wiring (MLINE) includes two straight portions 11 and a short-circuit portion 12 that short-circuits the two straight portions 11. That is, the metal wiring (MLINE) of the present embodiment has a ladder shape.
Here, the length (L1) of the short-circuit portion 12 is 120 μm, and the interval (W) between the short-circuit portions 12 is 120 μm. Moreover, the linear part 11 and the short circuit part 12 are comprised with metal materials, such as copper (Cu) and stainless steel (SUS), and the width | variety of the linear part 11 and the short circuit part 12 is 10 micrometers.

FIG. 2 is a schematic cross-sectional view showing a state where an organic EL layer (OLED) is formed on the resin film (RESIN) on which the fine metal wiring (MLINE) shown in FIG. 1 is formed.
In FIG. 2, 21 is a transparent electrode such as IZO, and 22 is a transparent electrode such as ITO.
In actual products, in order to ensure the reliability of the organic EL layer (OLED), a passivation film as a gas barrier layer is formed on the resin film (RESIN) and on the organic EL layer (OLED). However, it is omitted in FIG.
In addition, various methods such as vapor deposition and printing can be considered for forming a thin film layer structure of an organic EL layer (OLED). In this embodiment, the organic EL layer (OLED) film formation method is not limited because of the high compatibility of the (MLINE) process conditions.
Further, the film configuration of the organic EL layer (OLED) may be a low molecular weight type or a high molecular weight type. Furthermore, the organic EL layer (OLED) may be a plurality of light emission colors that have been separately colored, in addition to a single light emission color.
Next, in order to complete the structure as a touch panel, it is necessary to attach a film on the opposing surface.
In this embodiment, as shown in FIG. 3, the second substrate (SUB2) made of a resin film (RESIN) having a ladder-shaped fine metal wiring (MLINE) of the same design is rotated by 90 degrees to thereby bond the substrates together. went.

FIG. 4 shows a schematic cross-sectional structure of the touch panel of this example. As shown in FIG. 4, in the touch panel of the present embodiment, a sealing cushion sheet or an adhesive layer 31 is formed on the outer periphery, and dot spacers (SPACER) are arranged inside. This dot spacer (SPACER) was formed by printing.
In this embodiment, a dot spacer (SPACER) having a diameter (φ) of 200 microns and a height of 100 microns was used. Further, the dot spacer (SPACER) interval (P1 in FIG. 4) is 1 mm. Further, the length of the sealing cushion sheet or adhesive layer 31 (L2 in FIG. 4) is 3 mm, and the thickness of the sealing cushion sheet or adhesive layer 31 (H2 in FIG. 4) is 150 μm.
In the touch panel of the present embodiment, since the contact portion of the metal wiring (MLINE) inside the touch panel has an organic EL layer (OLED) interposed therebetween, the upper and lower metal wirings (MLINE) are in contact with each other through the organic EL layer (OLED). The contact portion (that is, the detection point) that emits light. That is, in this embodiment, the detection point emits light on the touch panel itself, so that the user can clearly grasp which position is touched.
Furthermore, in this embodiment, the contact portion where the upper and lower metal wirings (MLINE) are in contact with each other with the organic EL layer (OLED) interposed therebetween has a diode structure. For example, the metal of the lower second substrate (SUB2) The simulation is caused by a current flowing from the wiring (MLINE) flowing again through the metal wiring (MLINE) of the upper first substrate (SUB1) to another portion of the metal wiring (MLINE) of the second substrate (SUB2). It is possible to solve a problem such as a ghost that detects an unpressed place during point detection, that is, multipoint detection. This eliminates the need for an operation for removing the false point detection when the touch panel is driven.

In this embodiment, the reason why the ladder-shaped metal wiring (MLINE) is used is that the metal film having a film thickness of 10 to 150 μm blocks light, so that the light irradiated from the display panel is metal wiring (MLINE). This is to reduce light shielding.
However, if the light emitted from the display panel is allowed to be blocked, as shown in FIG. 5, in this embodiment, instead of the ladder-shaped metal wiring (MLINE), a striped metal It is also possible to use wiring (MLINE).
Furthermore, by blackening the metal wiring (MLINE), it is possible to increase the contrast of a display device (for example, a liquid crystal display device, an organic EL display device, etc.) on which a touch panel is mounted.

The effects of using the present invention will be described as follows.
(1) Since an addressed metal wiring (MLINE) is used, a plurality of points can be detected simultaneously.
(2) According to (1), since it can be detected by a digital circuit, the cost can be reduced.
(3) Since the patterning of the transparent electrode is not necessary, the cost can be reduced.
(4) Furthermore, the metal wiring (MLINE) pattern and the flexible cable pattern can be formed at the same time, thereby reducing the cost and improving the reliability.
(5) Since the metal wiring (MLINE) has a low resistance, a size of 40 inches or more (diagonal of 1 M or more) is possible, and the application is extended to an area where it has been difficult to mount a touch panel until now.
(6) Since the metal wiring (MLINE) can sufficiently have a resolution of 300 lpi or more, the current resolution is about 10 ppi, and the resolution can be increased 10 times or more.
(7) Using the above-mentioned high resolution and simultaneous multiple point detection functions, it is possible to distinguish between input objects and input methods on the touch panel, for example, the difference between the stylus and the finger based on the difference in the number of detection points It becomes.
(8) By blackening the metal wiring (MLINE), the contrast of a display such as a liquid crystal equipped with a touch panel can be increased.

(9) By adding a circularly polarizing plate to the surface of the touch panel, the surface reflection of the fine metal wiring (MLINE) is observed in black, and thus acts like a black matrix on the organic EL layer (OLED). Therefore, it can contribute to the improvement of the contrast of the organic EL layer (OLED). Further, the circularly polarizing plate is useful for protecting the surface of the touch panel.
(10) Since the touch panel of this embodiment has a fine metal wiring (MLINE), the semiconductor layer mounted on a display panel such as an organic EL display device or a liquid crystal display device is made of polysilicon. Since the circuit can be used as a detection circuit, the touch panel of this embodiment can be directly connected to a display device such as an organic EL display device or a liquid crystal display device.
(11) Since the coordinate detection is a metal wiring (MLINE) (thickness: 10 μm), the life reliability such as the number of detections is improved by 10 times or more compared to the conventional transparent electrode (thickness: 100 nm). .
(12) Since the metal wiring (MLINE) has a low resistance and can be detected digitally, a detection speed that is about 100 times higher than that of the conventional resistance film type analog detection mechanism can be obtained. Things are possible.
(13) Furthermore, as a result of incorporating an organic EL layer (OLED) in the touch panel, the detection point emits light, and in addition, a diode is formed at the electrical contact inside the touch panel, so that a pseudo check is performed. The so-called ghost can be electrically countered.
As mentioned above, the invention made by the present inventor has been specifically described based on the above embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Of course.

It is a figure for demonstrating the structure of the 1st board | substrate of a touch panel of the Example of this invention, and a 2nd board | substrate. It is a schematic sectional drawing which shows the state which formed the organic EL layer on the resin film in which the fine metal wiring shown in FIG. 1 was formed. It is a figure for demonstrating arrangement | positioning of the 1st board | substrate of a touch panel of the Example of this invention, and a 2nd board | substrate. It is principal part sectional drawing which shows schematic structure of the touchscreen of the Example of this invention. It is a figure for demonstrating the deformation | transformation of the 1st board | substrate of a touch panel of the Example of this invention, and a 2nd board | substrate. It is principal part sectional drawing which shows schematic structure of the conventional resistive film type touchscreen. It is a schematic plan view of the touch panel used as the premise of this invention. It is sectional drawing of the display apparatus with a touch panel shown in FIG. FIG. 8 is an enlarged cross-sectional view of the first substrate in the AA region of FIG. 7. It is a schematic plan view which shows the modification 1 of the touch panel shown in FIG. It is a schematic plan view which shows the modification 2 of the touch panel shown in FIG. FIG. 10 is a schematic plan view illustrating a third modification of the touch panel illustrated in FIG. 7. It is a schematic plan view which shows the modification 4 of the touch panel shown in FIG. It is principal part sectional drawing which shows the modification 5 of the touch panel shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Straight part 12 Short part 21, 22, TLINE Transparent electrode 31 Cushion sheet | seat or adhesive layer GSUB Glass substrate RESIN Resin film SUB1 1st substrate SUB2 2nd substrate SC1 1st peripheral circuit SC2 2nd peripheral circuit SPACER spacer CPOL Circularly polarizing plate PSUB Display panel substrate MLINE, MLINEF Metal wiring REF Internal antireflection film OLED Organic EL layer

Claims (6)

A touch panel having a pair of substrates provided with electrodes on opposite surfaces and a spacer for holding a gap between the pair of substrates;
A display device with a touch panel comprising a display panel disposed on the back surface of the touch panel,
An organic EL element disposed on the other substrate of the pair of substrates;
The spacer is disposed on the organic EL element,
The pair of substrates is made of resin,
The display device with a touch panel, wherein the electrodes of one of the pair of substrates are a plurality of metal wirings formed on the resin and extending in a first direction.   Each metal wiring on the one substrate is a ladder-shaped metal wiring composed of two straight portions extending in the first direction and a short-circuit portion formed between the two straight portions. The display device with a touch panel according to claim 1.   The display device with a touch panel according to claim 1, wherein a polarizing plate is provided outside the one substrate.   The electrode of the other substrate is a plurality of metal wirings formed on the resin and extending in a second direction intersecting the first direction. The display device with a touch panel according to any one of the above.   Each metal wiring on the other substrate is a ladder-shaped metal wiring composed of two straight portions extending in the second direction and a short-circuit portion formed between the two straight portions. The display device with a touch panel according to claim 4, wherein the display device has a touch panel.   The display device with a touch panel according to claim 1, wherein each of the metal wirings is blackened.

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