JP2003316290A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device which is thin, lightweight, large-sized, highly fine and easily carried in and out by simplifying the pattern wiring of a display part and using a common electrode film. <P>SOLUTION: A segment provided with an indicator composed of at least one emission element, and a drive means and a receiving means provided separately on each indicator, is arranged on the common electrode film. A signal from a transmission means is received on the receiving means, and the indicators are separately emitted with received information. The display device can round the common electrode film of an arranged segment interval in the form of a cylinder. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device which can be operated remotely, and more particularly to a display device suitable for use in obtaining a large screen with high definition.

[0002]

2. Description of the Related Art Conventional display devices of this type include, for example, an individual drive type display device as shown in FIG. 30 and a matrix drive type display device as shown in FIG. That is, in a display device using self-luminous elements such as light emitting diodes (hereinafter referred to as LEDs), in order to drive the light emitting elements, the light emitting elements 18 are individually driven as shown in FIG. Generally, a method of driving a matrix that emits light for each line as shown in FIG. When increasing the screen size of these display devices, the device for matrix driving as shown in FIG. 31 can directly increase the screen size.
In the individual drive method as shown in FIG. 30, a plurality of circuit boards are combined and a large number of individual drive wirings 31 for the light emitting elements 18 are provided on the back side on which the light emitting elements 18 are mounted as shown in FIG. I am trying to make it.

[0003]

Since the conventional display device is constructed as described above, it is necessary to display every line in the matrix driving method as shown in FIG. With an increase in the number, the display time for one line is inevitably shortened, the screen becomes dark, and flicker on the screen becomes a problem. Further, in the individual driving method as shown in FIG. 30, the pattern of the display substrate 13 is complicated, the wiring on the back surface of the display screen is complicated as shown in FIG. 32, and the pattern of the display substrate 13 is also complicated. However, this hinders the increase in size, definition, weight and thickness of the display device.

The present invention has been made in order to solve the above problems, and simplifies the pattern wiring of the display unit to enable thinning, weight reduction, size increase, and high definition, and further transport, The purpose is to obtain a display device that can be easily carried out.

[0005]

In view of the above-mentioned object, the present invention provides a display constituted by at least one light emitting element, and a driving means and a receiving means individually provided for each of these display. The segment provided is arranged on a film for a common electrode, a signal from a transmitting means is received by the receiving means, and the display is individually caused to emit light according to the received information, and the common electrodes having the arranged segment intervals are arranged. A display device is characterized in that the film for use can be rolled into a tubular shape.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1. 1 is a configuration diagram showing a first embodiment of the present invention. In the figure, the operation unit 3 is mainly a personal computer or the like, the transmission unit 5 is connected thereto, and the display unit 11 is composed of a plurality of segments 10 as display segments for receiving and emitting light individually. . The transmission unit 5 includes a transmission conversion unit 1 having a transmission antenna 4 and the transmission conversion unit 1
And a drive data conversion unit 2 that receives operation information (image data) from the operation unit 1 and converts it into drive data. Further, the segment 10 has a reception antenna 9, and a reception conversion unit 6 that converts a reception signal into the transmitted original drive data, and a drive unit 7 connected to this reception conversion unit 6.
And a light emitting unit 8 driven by the drive data from the drive unit 7.

Next, the operation will be described. Image data is output from the operation unit 3 and is output to the drive data conversion unit 2
Converts into drive data for displaying the light emitting unit 8 (mainly self-luminous elements such as LEDs), and the drive converting unit 1 modulates and amplifies the drive data, and the transmitting antenna 4 transmits each segment. Display data is transmitted to 10. Each segment 1
The signal received by the reception antenna 9 of 0 is received by the reception conversion unit 6
Return to the data demodulated and amplified by the drive data conversion unit 2 of the transmission unit 5, and based on the drive data, the drive unit 7
Lights up the light emitting unit 8.

FIG. 2 shows a specific external view of the display device shown in FIG. That is, only one segment 10 in FIG. 2 can receive and emit light. FIG. 3 shows an example of a detailed configuration of the segment 10. For example, the LED 18 is mounted on the display board 13, and the receiving circuit board 14 includes a receiving antenna 9, a receiving circuit IC 19, and an LED driving IC.
20, electronic components 20a such as resistors and capacitors are mounted. One segment 10 is formed by bonding the display substrate 13 and the receiving circuit substrate 14 to each other. 4 and 5 show an example of a configuration method for arranging a large number of these segments 10 to increase the screen size.

As shown in FIG. 4, the common electrode substrate 15 on which the common electrodes 16 (mainly power supply patterns Vdd, GND, etc.) are wired is mounted so that the segment 10 sandwiches the display substrate 13 and the receiving circuit substrate. Conduction of 14 is performed through a through hole 17. With such a configuration, a large number of segments 10 can be arranged as shown in FIG. 5, and a large screen can be easily configured. Up to this point, the segment 10 has a configuration in which three light emitting elements 18, which are mainly LEDs, etc., are mounted. In practice, however, a large number of light emitting elements 18 as shown in FIG. Implemented,
It can also be configured as one segment 10.

However, in this state, the same data is transmitted to all the segments and only the same light is emitted, so that the segment to be received must be designated when transmitting the display data. As an example of the solution, FIG. 7 shows a part of the transmission conversion unit 1. However, as shown in FIG.
2 is input, and this is put on the carrier wave of the variable local oscillator 21 whose frequency changes for each segment and output.

Although FIG. 8 shows a part of the reception conversion unit 6, a fixed local oscillator 23 different for each segment is provided as shown in FIG. 8 and its output is supplied to a detector 24 which detects display data. By doing so, the drive data that can be received can be made different for each segment. That is, for example, as shown in FIG. If a different fixed local oscillator 23 is installed for each 01 MHz, the variable local oscillator 21 of the transmitter 5 is displayed for each segment 10 by changing the frequency in the variable range of 2.01 to 2.72 MHz. Can send data.

Further, by making the frequency of the transmitting section 5 variable in this way, in the data transfer method of designating the segment 10, a digital signal can also be transferred. In this case, for the digital signal changed / transmitted to a different frequency by the transmission unit 5, only the digital data of the frequency designated by the SAW filter 25 of FIG.
Data will be sent, and different displays can be made for each segment. That is, in this case, the SAW filter 2
Reference numeral 5 is means for receiving only different frequency bands for each display segment. It should be noted that digital data can be transmitted and received by visible laser light instead of radio waves. FIG. 27 shows a configuration diagram in that case.

As described above, the display unit capable of receiving and emitting light independently for each segment 10 makes it possible to increase the size, weight, thickness, and definition of the display device. Particularly for larger size, it can be easily done by increasing the number of segments, so it becomes possible to quickly respond to custom specifications. Even if the light emitting unit 8, the driving unit 7, the receiving conversion unit 6, or the like is defective, only the segment 10 needs to be replaced, so that the product yield can be improved and the segment 1 can be used even in the case of a failure in the market.
Since the replacement of only 0 is sufficient, there is an advantage that the time for failure repair is greatly shortened.

Embodiment 2. In the above-described first embodiment, the segments are designated by frequency band, but when displaying a screen, each segment often transmits data sequentially in a certain direction. In that case, as shown in FIG. Sequential reception If the OK signal can be delivered, the segment data can be received in time with the transmission of the transmitter. That is, when transmitting data for one image, the first segment 10a at the very beginning starts to be received. Then, when the first segment 10a completes the reception of the data, the second segment 10b becomes in the reception state when the reception OK is signaled to the second segment 10b. in this case,
Data lines are provided between each segment to exchange signals for starting and ending reception.

These are the third segment 1 as shown in FIG.
By continuing after 0c, one image can be displayed. However, in this display method, at least one data line between the segments is always required. As the transmission method of this display method, both analog transmission and digital transmission are possible, but as an advantage in analog transmission in particular, regarding the modulation and demodulation of the transmission conversion unit and the reception conversion unit,
Both FM modulation and AM modulation are possible. Particularly, by performing FM modulation, the drive data of the segment 10 can be accurately transmitted.

Thus, in the present embodiment, the display device can be made larger, lighter, thinner, and higher in definition, as in the first embodiment.

Embodiment 3. In the first embodiment, the segment 10 is designated by the frequency, and in the second embodiment, the reception state is transferred between the segments 10 to display the segment. However, in the first and second embodiments, the display is performed. The idea of combining display devices is also possible. Figure 1
In the second embodiment, several display units 11 of the second embodiment are arranged side by side, and the frequency bands received by the first display unit 11a, the second display unit 11b, and the third display unit 11c are different. By changing the frequency of the part 5, the segment 10
You can send data accurately to. However, with this method, F / F is used for modulation / demodulation of the transmission conversion unit and the reception conversion unit.
M modulation cannot be used.

Thus, in the present embodiment, when attaching and assembling on-site when making a large screen, if each display section 11a, 11b, 11c is individually adjusted at the factory, it can be assembled on-site. Adjustment is easy.

Embodiment 4. Contrary to Embodiment 3 described above, FIG. 13 shows a form in which several display devices 11 according to Embodiment 1 are arranged and received by the first display unit 11a, the second display unit 11b, and the third display unit 11c. By passing the OK date and time, each of the display units 11a, 11b, and 11c itself determines whether the reception state is not so. However, in this case, a switching circuit that turns ON / OFF by the data reception OK signal for each display unit or each segment is required.

Thus, in the present embodiment, adjustment can be made for each display as in the case of the above-mentioned third embodiment so that the display can be assembled later, and the variable range of the frequency on the transmitter side can be shortened. The burden can be reduced and the transmitter can be made cheaper.

Embodiment 5. Embodiments 1 and 2 above
As a method of designating a segment for transmitting display data other than the above, when performing digital transmission, a method of transmitting a segment number before the driving data and setting only the segment at the address of that segment to the receiving state as shown in FIG. is there. FIG. 15 is a schematic diagram of the configuration, in which each segment 1
Segment numbers are attached to 0a, 10b, and 10c, and the transmission unit 5 transmits the display data of FIG. That is, the transmission unit 5 transmits a signal for designating a segment to be displayed before transmitting the display data for the segment. Thus, in this embodiment, the display device can be made larger, lighter, thinner, and higher in definition.

Sixth Embodiment The segment designating method of the fifth embodiment can be combined with the first embodiment. For example, in FIG. 16, several display units 11 of the fifth embodiment are arranged side by side, and the frequency bands received by the first display unit 11a, the second display unit 11b, and the third display unit 11c are the SAW of FIG. Since it is different by changing the filter, it is possible to accurately send data to the segment 10 by changing the frequency of the transmitting unit 5.

On the contrary, as shown in FIG. 17, a plurality of display units 11 of the first embodiment are arranged, and each display unit 11a, 11b, 11c is numbered. When the number is designated by digital transmission, the display device becomes the receiving state, and thereafter, the display data can be transmitted to each segment by the method of the first embodiment to the designated and receiving display device. it can. Thus, in the present embodiment, the display device can be made larger, lighter, thinner, and finer, and can be adjusted for each display, so that the assembly is also easy.

Embodiment 7. The segment designation method of the fifth embodiment can also be configured by combining it with the second embodiment. For example, FIG. 18 shows a display device 11 according to the fifth embodiment.
Are arranged side by side, and the first display unit 11a, the second display unit 11b, and the third display unit 11c transfer the data of the reception OK, so that the display units 11a, 11b,
11c itself determines whether the reception state is not so.

On the contrary, FIG. 19 shows the second embodiment.
The display device 11 is arranged in several lines. First, the number of the display device to be received is digitally transmitted, and the display device is set to the receiving state. After that, display data is displayed for each segment by the method of the second embodiment. It is a method of sending. Thus, in the present embodiment, the display device is made larger, lighter, and thinner,
Higher definition is possible and adjustment is possible for each display, so that assembly is also easy.

Embodiment 8. To display a moving image or the like on the display device, it is necessary to shorten the display time in order to increase the number of times of display per hour. Further, even when the screen is enlarged and the number of pixels is increased, the number of data for one screen is increased and the display speed is slowed down. Therefore, the first to sixth embodiments described above
Up to this point, the embodiment has only one transmission unit 5, but in order to increase the data transfer rate, it is possible to increase the data transmission rate by using a plurality of transmission units 5. For example, FIG. 20 is a configuration diagram when the display unit in FIG. 12 of the third embodiment is configured by a plurality of transmission units.

In this configuration, the first transmitter 5a drives the first display 11a, the second transmitter 5b drives the second display 11b, and the third transmitter 5c drives the third display 11c. In the case of FIG. 20, since there are three display units for three transmission units and the transmission unit does not need to change the frequency, a fixed frequency transmission unit can be used. For example, FIG. 21 is a configuration diagram when the display unit in FIG. 13 of the third embodiment is configured by a plurality of transmission units. In this configuration, the first transmitter 5
a is 1/3 above each of the display units 11a, 11b, and 11c, 2nd transmission unit 5b is each 1/3 of the display units 11a, 11b, and 11c, and 3rd transmission unit 5c is each display unit 11a.・ 11
The lower 1/3 of b, 11c will be driven.

For example, FIG. 22 is a block diagram showing a case where the display section in FIG. 16 of the sixth embodiment is composed of a plurality of transmitting sections. In this configuration, the transmission unit 5a drives the display unit 11a, the transmission unit 5b drives the display unit 11b, and the transmission unit 5c drives the display unit 11c. In the case of FIG. 22 as well, since the number of transmitting units and the number of displaying units are the same, the transmitting units may have a fixed frequency.

Although various configurations are possible as described above,
In the present embodiment, by using a plurality of transmitters, the transmission time of drive data can be shortened, moving images can be displayed, and in some cases, the variable range of the transmitters can be shortened. Therefore, the burden on the transmitter is also reduced.

Ninth Embodiment In the above first to seventh embodiments, the antenna and the laser light receiving element as the receiving means are attached to each segment, but it is not necessary to attach to each segment, and at least a plurality of antennas and laser light receiving elements are provided as shown in FIG. Can be put together in one. In that case, as shown in FIG. 24, it is also possible to wire the lines of the antenna and the laser light receiving element on the common electrode substrate 15. Thus, in the present embodiment, the price of the antenna and the laser light receiving element in the display section can be reduced.

Embodiment 10. In the first to eighth embodiments described above, the segment 10 and the common electrode substrate 15 are arranged so that the receiving circuit substrate 14 and the common electrode substrate 1 of the segment 10 are arranged.
The display board 13 and the receiver circuit board 14 are combined as shown in FIG. 28 to form a display / receiver circuit board 30, which is one board, on one side of the common electrode board 15, for example. The display / reception circuit board 30 is installed. Further, the common electrode substrate 15 and the display / reception circuit substrate 30 are connected by the connection component 31 which also serves as a spacer.
By doing as described above, the pattern wiring of the common electrode substrate 15 is at least the power supply wiring (Vdd, GND).
You will be able to configure it only.

Thus, in the present embodiment, the display / reception circuit board 30 of the segment is cheap and can be made thin, and the display unit 11 itself can be made thin. Also, the common electrode substrate 1
The pattern No. 5 can be simplified, the power supply pattern can be thickened, and the current capacity of the substrate can be increased.

Eleventh Embodiment When the display area of the segment 10 is large and there is a gap between the light emitting portions, as shown in FIG. 29, the receiving circuit IC 19, the LED driving IC 20, the electronic components 20a such as resistors and capacitors, the receiving antenna 9 and the like.
Can be mounted on the common electrode substrate 15 on the same surface as the light emitting element 18.

Thus, in this embodiment, the segment 11 serves as a single-sided mounting board, which facilitates manufacturing. Also,
The segment 11 also becomes thinner, and the display device can be made thinner.
Moreover, in this method, as shown in FIG.
In the case of transmission using 2a and the light receiving circuit 12b, since the receiving circuit 12b serves as the display surface of the display device, it is possible to perform an operation while confirming the display from the transmitting unit 5 side.

Twelfth Embodiment In the above first to ninth embodiments, the common electrode substrate 15 may be made of a bendable material such as a film, instead of a rigid structure such as a printed circuit board. By doing so,
The common electrode film 26 is movable in shape due to the gaps between the respective segments 10 of No. 5. FIG. 26 shows an example of how to use the display device when the common electrode film 26 is used.
The display unit 11 is hung by a clasp 29 on a wall or the like by a suspension unit 28, and a tube-like object at the bottom of the display device 11 is a power supply box 27 containing a power supply, a speaker, and the like. Since the common electrode film 26 is movable in shape, the display unit 11 can be rolled around the power supply box 27. The shape of the display device as shown in FIG. 26 makes it easy to carry and carry out a large-sized display device, which makes it convenient to carry.

[0036]

According to the present invention, a segment provided with at least one light emitting element and a driving means and a receiving means individually provided for each of these display elements is used as a common electrode. The film is arranged on a film, the signal from the transmitting means is received by the receiving means, the display is individually made to emit light according to the received information, and the arranged common electrode film having the segment intervals is rolled into a tubular shape. Since it is a display device that can be used, the pattern wiring of the display part is simplified, and thin film, light weight, large size and high definition are made possible by using the common electrode film, and it is easy to carry and carry out, making it convenient to carry. Has the effect of becoming.

Further, the display segment receives the display data transmitted from the transmitting unit, converts the received display data into drive data of the display element, and the drive conversion unit converted by the receive conversion unit. Since it has a drive unit that controls the light emitting unit based on the data, it is possible to make it thinner, lighter, larger, and finer.
The effect is that you can respond quickly.

Further, since the transmission unit transmits the display data having different frequencies and the display unit is provided with the unit capable of receiving only the different frequency band for each display segment, different display can be performed for each display segment, which is thin, Lighter, larger,
This has the effect of enabling high definition.

Further, since the data lines capable of exchanging the reception start / end signals are laid between the display segments, the drive data of each display segment can be accurately transmitted, and the thin, lightweight, large size and high definition are possible. Has the effect of becoming.

Further, since the transmitting section transmits the signal for designating the display segment to be displayed before transmitting the display data for the display segment, the display data can be surely transmitted, and the thin and light weight can be achieved. There is an effect that a large size and high definition can be realized.

Since at least one transmitter is provided, the use of a plurality of transmitters has the effect of shortening the drive data transmission time and enabling the display of moving images.

Further, since the plurality of receiving means included in each display segment of the display unit are integrated into a single unit, the cost of the antenna, the laser light receiving element and the like related to the display unit can be reduced, and the cost of the device can be reduced. There is an effect that it can be achieved.

Further, since the deformable material is used for the connection between the display segments, there is an effect that the display device can be easily carried and carried out and the carrying is convenient.

Further, since the display segment is arranged only on one side of the connecting substrate of the display segment or the film, the substrate of the display segment and the like can be made inexpensive and thin, and the display portion itself can be made thin. The board pattern is simplified, the power supply pattern can be thickened, and the current capacity of the board can be increased.

Further, since the receiving conversion section and the driving section are provided on the same surface as the light emitting section of the display segment, it becomes easy to manufacture,
There is an effect that the display unit can be made thinner.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is an external view showing a display device according to Embodiment 1 of the present invention.

FIG. 3 is a configuration diagram showing a segment according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram showing a segment and a common electrode substrate according to the first embodiment of the present invention.

FIG. 5 is a configuration diagram of a display device according to Embodiment 1 of the present invention.

FIG. 6 is a diagram for explaining an increase in size of a segment according to the first embodiment of the present invention.

FIG. 7 is a diagram for explaining a signal conversion method of a transmission conversion unit according to the first embodiment of the present invention.

FIG. 8 is a diagram for explaining a signal conversion method of a reception conversion unit according to the first embodiment of the present invention.

FIG. 9 is a diagram for explaining a transmission method according to the first embodiment of the present invention.

FIG. 10 is a diagram for explaining a signal conversion method of a transmission conversion unit by digital transmission according to the first embodiment of the present invention.

FIG. 11 is a configuration diagram showing a second embodiment of the present invention.

FIG. 12 is a configuration diagram showing a third embodiment of the present invention.

FIG. 13 is a configuration diagram showing a fourth embodiment of the present invention.

FIG. 14 is a diagram showing display data according to the fifth embodiment of the present invention.

FIG. 15 is a diagram for explaining a transmission method according to the fifth embodiment of the present invention.

FIG. 16 is a configuration diagram showing a sixth embodiment of the present invention.

FIG. 17 is a configuration diagram showing a sixth embodiment of the present invention.

FIG. 18 is a configuration diagram showing a seventh embodiment of the present invention.

FIG. 19 is a configuration diagram showing a seventh embodiment of the present invention.

FIG. 20 is a configuration diagram showing an eighth embodiment of the present invention.

FIG. 21 is a configuration diagram showing an eighth embodiment of the present invention.

FIG. 22 is a configuration diagram showing an eighth embodiment of the present invention.

FIG. 23 is an external view showing a display device in which a receiving antenna is integrated according to Embodiment 9 of the present invention.

FIG. 24 is a configuration diagram showing a common electrode substrate in which a receiving antenna according to Embodiment 9 of the present invention is integrated.

FIG. 25 is a configuration diagram of a common electrode film according to a twelfth embodiment of the present invention.

FIG. 26 is an explanatory diagram of a rounding operation of the display unit according to the twelfth embodiment of the present invention.

FIG. 27 is a diagram for explaining a method of transmitting / receiving with visible light laser light according to the first and eleventh embodiments of the present invention.

FIG. 28 is a diagram showing an arrangement of a segment on one side of a common electrode substrate according to the tenth embodiment of the present invention.

FIG. 29 is a diagram showing component mounting on one side of a board of a segment according to the eleventh embodiment of the present invention.

FIG. 30 is a circuit diagram showing a conventional individual drive type display device.

FIG. 31 is a circuit diagram showing a conventional matrix drive type display device.

FIG. 32 is an external view showing a conventional individual drive type display device.

[Explanation of symbols]

1 transmission conversion unit, 2 drive data conversion unit, 3 operation unit,
4 transmitting antenna, 5 transmitting unit, 5a 1st transmitting unit, 5b
2nd transmission part, 5c 3rd transmission part, 6 reception conversion part, 7
Drive unit, 8 light emitting unit, 9 receiving antenna, 10 segment, 11 display unit, 11a first display unit, 11b second display unit, 11c third display unit, 12a laser light emitting device, 12b light receiving circuit, 13 display substrate, 14 Receiver circuit board, 15 common electrode board, 16 common electrode, 21
Variable local oscillator, 22 balanced modulator, 23 fixed local oscillator, 24 detector, 25 SAW filter, 26 common electrode filter.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09G 3/20 G09G 3/20 680F 3/32 3/32 AF term (reference) 5C080 AA07 BB05 CC06 CC09 DD07 DD08 DD21 DD22 EE19 FF01 FF10 GG01 JJ02 JJ06 5G435 AA18 AA19 BB04 CC09 DD16 EE32 EE41 GG21

Claims (10)

[Claims] 1. A segment comprising a display comprising at least one light-emitting element and a driving means and a receiving means individually provided for each of these displays is arranged on a common electrode film and transmitted. It is characterized in that the signal from the means is received by the receiving means, the display device is caused to emit light individually according to the received information, and the arranged common electrode film having the segment intervals can be rolled into a tubular shape. Display device. 2. The display according to claim 1, wherein the transmitting means transmits display data having different frequencies, and means for receiving only different frequencies for each segment arranged on the common electrode substrate. apparatus. 3. The display device according to claim 1, wherein data lines capable of exchanging reception start / end signals are connected between the segments arranged on the common electrode substrate. 4. The transmitting means, before transmitting the display data for each segment arranged on the common electrode substrate,
The display device according to any one of claims 1 to 3, wherein a signal for designating a segment to be displayed is transmitted. 5. The display device according to claim 1, wherein the number of the transmitting means is at least one. 6. The display device according to claim 1, wherein the receiving means for the segments arranged on the common electrode substrate are integrated. 7. The display device according to claim 1, wherein the common electrode substrate is made of a deformable material, and the segments are arranged. 8. The segment is arranged only on one surface of the common electrode substrate.
The display device according to claim 1. 9. The display according to any one of claims 1 to 8, wherein individual driving means and receiving means of the display are arranged on the same surface as the light emitting element of the display to form a segment. Display device. 10. Each segment has a first substrate on which the light emitting element is mounted and a second substrate on which the driving means and the receiving means are mounted, and a common electrode is stretched and a through hole is formed. The first and second substrates are provided on the common electrode substrate so as to sandwich the first and second substrates from the front and back and to be electrically connected to each other through a through hole. 9. The display device according to any one of 9 above.