JPH10170895A - Image display unit and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the handling, to suppress manufacture defects, and to facilitate the manufacture. SOLUTION: A display panel 1 is arranged over an opening part 5 of a holder 3, which has the opening part 5 with the opening area smaller than the plane area of the display panel 1 at a prescribed position and also has driving substrate hold parts 6a, 6b and 6c and over the driving substrate hold parts 6a, 6b and 6c, driving substrates 2a, 2b and 2c are arranged, and the display panel 1 and driving substrates 2a, 2b and 2c are connected by FPCs 4a, 4b and 4c. Hold parts 7a, 7b and 7c and 8a, 8b and 8c for connection are preferably formed at positions corresponding to connection parts of the holder 3 between the display panel 1 and FPCs 4a, 4b and 4c and connection parts between the driving substrates 2a, 2b and 2c and FPCs 4a, 4b and 4c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image display unit for selecting an image by driving an electro-optical material layer using plasma and a method of manufacturing the same. More specifically, the present invention relates to an image display unit that is easy to handle, suppresses manufacturing defects, and is easy to manufacture by improving the shape of a holder that holds a display panel that constitutes an image display unit, and a method for manufacturing the same. is there.

[0002]

2. Description of the Related Art Unlike a cathode ray tube display device, an image display device called a flat display device having a flat shape has been actively developed in recent years. In particular, an image display apparatus in which an active element such as a transistor is provided for each display pixel and driven, that is, a so-called active matrix addressing method is applied to drive a display panel in which liquid crystal is sealed has attracted attention. However, according to this method, since a large number of semiconductor elements such as thin film transistors need to be provided, there is a concern about a yield problem, particularly when a display is enlarged to form a large screen, and the manufacturing cost becomes high. Inconvenience occurs.

In order to solve these problems, there has been proposed an image display apparatus to which a system utilizing discharge plasma instead of a semiconductor element such as a MOS transistor or a thin film transistor is used as an active element.

[0004] Since the display panel in which the liquid crystal is sealed as described above is not a self-luminous type, it is necessary to use external light to display an image. Therefore, for example, a light source called a backlight is provided on one main surface side which is a back surface of a display panel, light emitted from this light source is transmitted to a liquid crystal panel, and an image is transmitted by using light transmission or blocking by liquid crystal. Is displayed. That is, an actual image display device is a combination of a display panel in which liquid crystal is sealed, a driving unit for driving the display panel, and a backlight.

The structure of the display panel will be specifically described. As shown in FIGS.
1 and a plasma cell 102 are laminated with a liquid crystal layer 107 interposed therebetween to form a flat panel structure.

[0006] The electro-optical display cell 101 is constructed using an upper glass substrate 104 (hereinafter, referred to as a second substrate 104). One main surface 1 inside second substrate 104
A plurality of data electrodes 105 made of a transparent conductive material and formed in parallel lines are formed in a predetermined direction at a predetermined interval. Here, this forming direction is referred to as a column direction.

On the other hand, the plasma cell 102 is configured using a lower glass substrate 108 (hereinafter, referred to as a first substrate 108). A plasma electrode is formed on one main surface 108a inside the first substrate 108, and a plurality of anode electrodes 109A and cathode electrodes 109K formed in parallel lines are alternately arranged at a predetermined interval. Is formed in the direction of. Here, this forming direction is referred to as a row direction. Further, a partition 110 having a predetermined width is formed at a substantially central portion of each upper surface of the anode electrode 9A and the cathode electrode 9K so as to extend along the respective electrodes. The top of each partition 110 is in contact with the lower surface of the dielectric thin plate 103, and the first substrate 108 and the dielectric thin plate 10
The dimensions of the gap 3 are kept constant. This dielectric thin plate 10
Reference numeral 3 is made of thin glass or the like. The thin dielectric plate 103 needs to be as thin as possible in order to drive the electro-optical display cell 101.

The second substrate 104 of the electro-optical display cell 101 is provided with a thin dielectric plate 103 via a spacer 106.
The space between the second substrate 104 and the thin dielectric plate 103 is filled with a liquid crystal as an electro-optical material,
The liquid crystal layer 107 is formed.

That is, the second substrate 104 is placed on the plasma cell 102 via the liquid crystal layer 107 which is an electro-optical material layer.
Are laminated.

A frit seal member 111 made of low-melting glass or the like is provided along the periphery of the first substrate 108 so that the first substrate 108 and the thin dielectric plate 103 are airtight. Are joined together. An ionizable gas is sealed in the gap between the first substrate 108 and the thin dielectric plate 103. For example, helium, neon, argon, or a mixed gas thereof is used as the gas to be sealed.

As a result, in the gap between the first substrate 108 and the thin dielectric plate 103, a plurality of discharge channels 112, which are spaces separated by the partition walls 110 and extend in the column direction, are formed in parallel in the row direction. . That is, discharge channel 1
12 is formed so as to be orthogonal to the data electrode 105.
Each data electrode 105 serves as a column drive unit and each discharge channel 112 serves as a row drive unit, and a pixel 113 is defined at the intersection of the two as shown in FIG.

In the above configuration, when a predetermined voltage is applied between the anode electrode 109A and the cathode electrode 109K corresponding to the predetermined discharge channel 112, the gas in the discharge channel 112 is selectively ionized. A plasma discharge occurs, and the inside thereof is maintained at substantially the anode potential. In this state, when a data voltage is applied to the data electrode 105, the data voltage is written to the liquid crystal layers 107 of the plurality of pixels 113 arranged in the column direction corresponding to the discharge channel 112 via the thin dielectric plate 103. When the plasma discharge ends, the discharge channel 112 becomes a floating potential, and the data voltage written in the liquid crystal layer 107 of each pixel 113 is held until the next writing period (for example, after one field or one frame). In this case, the discharge channel 112 functions as a sampling switch, and the liquid crystal layer 107 of each pixel 113 functions as a sampling capacitor.

Since the liquid crystal operates by the data voltage written in the liquid crystal layer 107 of each pixel 113, display is performed in pixel units. Accordingly, as described above, the discharge channel 112 for generating a plasma discharge and writing a data voltage to the liquid crystal layer 107 of the plurality of pixels 113 arranged in the column direction.
Are sequentially scanned in the row direction, whereby a two-dimensional image can be displayed.

[0014]

In the display panel as described above, it is natural that a predetermined voltage is applied between the anode electrode and the cathode electrode, or a data voltage is applied to the data electrode. A driving board for driving the panel is connected. For example, as schematically shown in FIG. 9 and FIG.
Along the three side edges of the flexible printed wiring board (F
(PC) 115. Note that the flexible printed wiring board 115 is connected on the side of the display panel 116 facing the plasma cell 102 of the second substrate 104.

In the above display panel, the display panel portion is held by a frame-shaped holder to protect the display panel, and the display panel is combined with a backlight in this state. At this time, the drive board 114 is arranged on the back side of the backlight by utilizing the flexibility of the flexible printed wiring board 115.

Processing of such a display panel is as follows.
After the drive board is connected to the display panel by a flexible printed wiring board (hereinafter, referred to as FPC), the display panel portion is assembled into the holder in the order.
An image display device is formed by being combined with a backlight or the like, or packed and shipped as a product. In order to connect the driving substrate to the display panel, one end of the FPC is connected to a predetermined position of the display panel by thermocompression, and the other end of the FPC is connected to a predetermined position of the driving substrate by thermocompression. Like that. At this time, it goes without saying that the FPC is provided with wiring capable of electrically connecting the display panel and the drive substrate.

That is, the drive board is fixed only by the FPC until the drive board is mounted on the holder in the next step. In other words, the drive board is hung on the display panel via the FPC. When the transfer and operation to the next step are performed manually, damage to the FPC or damage to the thermocompression connection portion of the FPC is likely to occur during this period, and manufacturing defects are likely to occur. Also, handling is difficult.

Therefore, it is conceivable that the work is carried out on a pallet until the connection between the display panel and the drive board and the transfer to the next step are carried out, and only the assembly into the holder is performed manually, so that the load on the FPC is reduced. However, the driving substrate is F
Since the display panel is hung on the display panel via the PC, breakage of the FPC or damage to the thermocompression connection portion of the FPC is apt to occur during this period, and manufacturing defects are likely to occur. Further, in order to reuse the used pallets, the number of operations for transporting the pallets to the previous process increases, and the workability is not good.

Accordingly, the present invention has been proposed in view of the conventional circumstances, and has as its object to provide an image display unit which is easy to handle, suppresses manufacturing defects, and is easy to manufacture, and a method of manufacturing the same. I do.

[0020]

In order to achieve the above object, an image display unit according to the present invention is provided on a first substrate having a plurality of substantially parallel discharge electrodes formed on one main surface. A dielectric thin plate is arranged with an interval of, and a plasma cell is formed by sealing the periphery with a seal portion, and an electrode substantially orthogonal to the discharge electrode is formed on the facing surface of the dielectric thin plate. Panel in which the second substrate is overlapped via an electro-optic material layer, a driving substrate for driving the display panel, and an opening having an opening area smaller than the plane area of the display panel at a position corresponding to the display panel. Comprising a holder having a driving substrate holding portion,
The display panel is disposed on the opening of the holder, the driving substrate is disposed on the driving substrate holding section, and the display panel and the driving substrate are connected by a flexible printed wiring board.

In the image display unit of the present invention, the holder has holes at positions corresponding to the connection between the display panel and the flexible printed wiring board and the connection between the drive board and the flexible printed wiring board. Preferably, there is.

In the image display unit according to the present invention, it is preferable that the holder has a hole at a position corresponding to an electronic component mounting portion of the drive board of the drive board holding section.

As a method of manufacturing the image display unit of the present invention as described above, a predetermined interval is provided on a first substrate having a plurality of substantially parallel discharge electrodes formed on one main surface. A plasma cell is formed by sealing the periphery with a seal portion, and an electrode substantially orthogonal to the discharge electrode is formed on an opposite surface on the dielectric thin plate. A step of manufacturing a display panel in which the substrates are overlapped via an electro-optic material layer, a step of manufacturing a drive substrate for driving the display panel, and an opening area smaller than the plane area of the display panel at a predetermined position. A step of manufacturing a holder having an opening and having a driving substrate holding part, a step of arranging a display panel on the opening of the holder, and a step of arranging a driving substrate on the driving substrate holding part; Base During it includes those having a step of connecting a flexible printed wiring board.

In the above method for manufacturing an image display unit, the holder has holes at positions corresponding to the connection between the display panel and the flexible printed wiring board and the connection between the drive board and the flexible printed wiring board. These are sandwiched by a welding head and a jig via a hole corresponding to a connection portion between the display panel and the flexible printed wiring board, and are connected by thermocompression bonding to correspond to a connection portion between the drive board and the flexible printed wiring board. It is preferable that they are sandwiched by a welding head and a jig via a hole and connected by thermocompression bonding.

An image display unit according to the present invention has a display panel, a driving board for driving the display panel, and an opening having an opening area smaller than the plane area of the display panel at a position corresponding to the display panel, and The display panel is disposed on the opening of the holder, the driving substrate is disposed on the driving substrate holding portion, and the display panel and the driving substrate are connected by a flexible printed wiring board. Therefore, the driving substrate is supported by the holder, and the driving substrate does not hang on the display panel via the flexible printed wiring board, so that the flexible printed wiring board is not damaged or the thermocompression connection of the flexible printed wiring board is performed. It is hard to damage the part.

In the image display unit according to the present invention, if the holder has a hole at a position corresponding to the electronic component mounting portion of the drive board of the drive board holding portion, the electronic component mounted on the drive board can be used. Stored in the holder,
The occurrence of breakage and damage of the electronic components is also suppressed.

In manufacturing the image display unit of the present invention as described above, a display panel and a drive board are manufactured, and an opening having an opening area smaller than a plane area of the display panel is provided at a predetermined position. And after manufacturing a holder having a driving substrate holding portion, disposing the display panel on the opening of the holder and disposing the driving substrate on the driving substrate holding portion, a flexible printed wiring board connects the display panel and the driving substrate. If the connection is made, the display panel and the driving board are connected by the flexible printed wiring board in a state where the driving board is already supported by the holder, so that the driving board is connected to the display panel via the flexible printed wiring board. Without hanging from
Damage to the flexible printed wiring board and damage to the thermocompression connection portion of the flexible printed wiring board hardly occur, and reliability is ensured.

In the method of manufacturing an image display unit, the holder may have a hole at a position corresponding to a connection portion between the display panel and the flexible printed wiring board and a position corresponding to a connection portion between the drive substrate and the flexible printed wiring board. These are sandwiched by a welding head and a jig through a hole corresponding to the connection part of the display panel and the flexible printed wiring board, connected by thermocompression bonding, and a hole corresponding to the connection part of the drive board and the flexible printed wiring board is formed. If these are sandwiched by a welding head and a jig via a jig and connected by thermocompression bonding, the display panel and the driving board are easily connected by a flexible printed wiring board.

If the image display unit is manufactured as described above, the holder has not only a function as a holder but also a function as a pallet for transporting a display panel or a driving substrate to be arranged. There is no need to prepare a separate pallet. Further, if the holder is used as a pallet, it is not necessary to transport the used pallet to a previous process in order to use the pallet again, and the workability is improved.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An image display unit according to the present invention, as schematically shown in FIG. 1, holds a display panel 1 and driving substrates 2a, 2b, 2c for driving the display panel 1, and holds them. A flexible printed wiring board 4a, 4b, 4 is provided on the holder 3 between the display panel 1 and the driving substrates 2a, 2b, 2c.
c (hereinafter, referred to as FPCs 4a, 4b, and 4c). Here, the drive substrates 2a, 2b, and 2 are provided on three sides of the outer edge of the flat rectangular display panel 1.
An example in which c is arranged will be described.

The display panel 1 has a configuration similar to that described above with reference to FIGS. 6, 7, and 8, and a description thereof will be omitted.

The drive boards 2a, 2b, 2c drive the display panel 1 and are ordinary wiring boards. Further, the FPC 4a has flexibility, and has a connection portion for connecting to the display panel 1 and a connection portion for connecting to the drive substrate 2a at opposite ends in a predetermined direction, respectively.
For example, the display panel 1 and the FPC 4a and the drive board 2a and the FPC 4a are connected by thermocompression bonding. In addition, this is FPC4b, 4
The same applies to c.

In the image display unit of this embodiment,
The size of the holder 3 is set to have an area in which the display panel 1 in a state where the driving substrates 2a, 2b, 2c are connected via the FPCs 4a, 4b, 4c can be placed in an in-plane direction. An opening 5 having an opening area smaller than the plane area of the display panel 1 is formed at a position corresponding to the display panel 1 of the holder 3, and peripheral portions of the opening 5 are formed on the driving substrate holding parts 6a and 6b. , 6c.

In the holder 3, a connection hole 7a is formed at a position corresponding to the connection between the display panel 1 and the FPC 2a.
A connection hole 8a is formed at a position corresponding to the connection part. Furthermore, a connection hole 7b is formed at a position corresponding to the connection between the display panel 1 and the FPC 2b, and a connection hole 8b is formed at a position corresponding to the connection between the drive board 2b and the FPC 2b. . Further, the display panel 1
Connection hole 7c at a position corresponding to the connection between
Are formed, and a connection hole 8c is formed at a position corresponding to the connection between the drive board 2c and the FPC 2c.

In the holder 3, an electronic component storage hole 9a is formed in the drive substrate holding portion 6a at a position corresponding to an electronic component mounting portion (not shown) of the drive substrate 2a. Further, an electronic component storage hole 9b is formed in the drive substrate holding portion 6b at a position corresponding to an electronic component mounting portion (not shown) of the drive substrate 2b. Further, an electronic component storage hole 9c is formed in the drive substrate holding portion 6c at a position corresponding to an electronic component mounting portion (not shown) of the drive substrate 2c.

In the image display unit of this embodiment, the display panel 1 is attached to the holder 3 by an adhesive (not shown).
For example, the drive board 2 a is screwed to the holder 3 with screws 10 on all sides. Similarly, the drive substrates 2b and 2c are also screwed to the holder 3 on the four sides by screws 11 and 12, respectively. In the image display unit of the present example,
The holder 3 also has screw holes 13 on all sides so that it can be incorporated in an image display device as described later.

That is, in the image display unit of this embodiment, the driving boards 2a, 2b, 2c are supported by the holder 3, and the driving boards 2a, 2b, 2c are
The display panel 1 does not hang from the display panel 1 via the wires 4a, 4b, and 4c, so that damage to the FPCs 4a, 4b, and 4c and damage to the thermo-compression connection portions are less likely to occur, and manufacturing defects are suppressed. Also, the display panel 1 by the holder 3,
Since all of the driving substrates 2a, 2b, 2c and the FPCs 4a, 4b, 4c are supported, handling is easy.

In the image display unit of this embodiment, the electronic component storage holes are provided at positions corresponding to the electronic component mounting locations (not shown) of the drive substrates 2a, 2b, 2c of the drive substrate holding portions 6a, 6b, 6c of the holder 3. Since the parts 9a, 9b, and 9c are formed, the electronic components mounted on the drive boards 2a, 2b, and 2c are stored in the holder 3, and breakage and damage of the electronic components are suppressed, and manufacturing defects are suppressed. Can be

Next, a method for manufacturing the image display unit of this embodiment will be described. That is, first, the display panel 1 having the same configuration as that described above with reference to FIGS. 6, 7, and 8 is manufactured. Next, drive substrates 2a, 2b, 2c for driving the display panel 1 are manufactured. These drive boards 2a, 2b, 2c may be ordinary wiring boards, and screw holes that can be screwed to holders described later are formed at four ends.

Subsequently, the sizes of the FPCs 4a, 4b, 4
A plate material having an area capable of mounting the display panel 1 in a state in which the driving substrates 2a, 2b, and 2c are connected to each other via the substrate c in an in-plane direction is prepared, and is processed to have a structure as schematically shown in FIG. The holder 3 is manufactured.

In the holder 3, an opening 5 which is a plane rectangular through hole with an opening area smaller than the plane area of the display panel 1 is formed at a predetermined position where the display panel 1 is arranged in a later step. A concave portion 14 is formed so as to surround the outer peripheral edge, and adhesive portions 15a, 15b, 15c, and 15d are formed on a bottom surface along four sides of the concave portion 14 with a double-sided tape or the like.

Further, in the holder 3, the drive board holding portions 6 a, 6 b, and 6 c are provided on three sides of the peripheral portion further outside the concave portion 14 outside the opening 5.

Further, in the holder 3,
In a later step, a connection hole 7a as a through hole is formed at a predetermined position to be a connection between the display panel 1 and the FPC 2a.
In a later step, a connection hole 8a is formed at a predetermined position to be a connection between the drive board 2a and the FPC 2a. Similarly, a connection hole 7b is formed at a predetermined position to be a connection between the display panel 1 and the FPC 2b, and the drive board 2b and the FP
A connection hole 8b is formed at a predetermined position to be a connection portion of C2b, a connection hole 7c is formed at a predetermined position to be a connection portion of the display panel 1 and the FPC 2c, and the drive board 2c and the FPC
A connection hole 8c is formed at a predetermined position to be a connection portion of 2c. However, in the holder 3 of this example, the connection hole 7b is formed in a part of the concave portion 14.

In the holder 3, an electronic component storage hole 9a is formed at a predetermined position of the drive substrate holding portion 6a corresponding to an electronic component mounting portion of the drive substrate 2a. An electronic component storage hole 9b is formed at a predetermined position corresponding to the electronic component mounting portion 2b, and an electronic component storage hole 9c is formed at a predetermined position corresponding to the electronic component mounting portion of the drive board 2c of the drive board holding portion 6c. To form

Further, in the holder 3,
For example, screw holes 16 for screwing four sides of the drive board 2a are formed at predetermined positions of the drive board holding section 6a where the drive board 2a is arranged. The same applies to the drive board holding parts 6b and 6c, and screw holes 17 and 18 for screwing four sides of the drive boards 2b and 2c are formed respectively.

Further, screw holes 13 are formed at four ends of the holder 3 so that the holder 3 can be incorporated into an image display device as described later.

Next, as schematically shown in FIG. 3, the display panel 1 and the driving substrates 2a, 2b, 2
Arrange c. That is, the display panel 1 is positioned with respect to the opening 5, and the bonding portions 15a, 15b, 15
c, 15d (not shown in FIG. 3), and the drive substrates 2a, 2b, 2c are positioned on the drive substrate holding portions 6a, 6b, 6c by screw holes. Screws 10, 10, and 12 are arranged.

Next, the display panel 1 and the driving substrates 2a, 2
b, 2c are connected by FPCs 4a, 4b, 4c. The FPCs 4a, 4b, and 4c are flexible and have connection portions for connecting to the display panel 1 and connection portions for connecting to the driving substrates 2a, 2b, and 2c at both ends in a predetermined direction. Yes, they can be electrically connected by thermocompression bonding.

At this time, in the manufacturing method of the present embodiment, as shown schematically in FIG. 4, a connection portion between the display panel 1 and the drive substrate 2b is shown schematically. The display panel 1 and the FPC 4b are sandwiched by the protrusions 20a provided corresponding to the connection holes 7b of the welding head 19a and the jig 20 via the holes 7b, and are thermocompression-bonded to connect the display panel 1 and the FPC 4b. . At the same time, the drive board 2b and the FPC 4b are sandwiched by the welding head 19b and the projection 20b provided corresponding to the connection hole 7b of the jig 20 via the connection hole 8b, and are thermocompressed. The board 2b and the FPC 4b are connected. As a result, the display panel 1 and the drive board 2b are connected by the FPC 4b. The display panel 1 and the other drive substrates 2a and 2c may be connected in the same manner, and thus the image display unit of this example as shown in FIG. 1 is completed.

In the method of manufacturing the image display unit of this embodiment, the display panel 1, the drive substrates 2a, 2b, 2c and the holder 3 are manufactured, and the display panel 1 is arranged on the opening 5 of the holder 3, After arranging the substrates 2a, 2b, 2c on the driving substrate holders 6a, 6b, 6c, respectively, the FPC 4 is provided between the display panel 1 and the driving substrates 2a, 2b, 2c.
a, 4b, and 4c, respectively, the FPCs 4a, 4b, and 4c respectively connect the display panel 1 and the drive substrates 2a, 2b, and 2c with the drive substrates 2a, 2b, and 2c already supported by the holder 3. The drive boards 2a, 2b, 2c are connected to the FPC 4
a, 4b, 4c, the display panel 1 is not hung from the display panel 1, damage to the FPCs 4a, 4b, 4c and damage to the thermo-compression connection are unlikely to occur, and reliability is ensured.
Manufacturing defects are also suppressed.

In this example, the display panel 1 and the F
Connection holes 7 corresponding to connection portions of PCs 4a, 4b, 4c
a, 7b and 7c, these are sandwiched by a welding head and a jig and connected by thermocompression bonding to form driving substrates 2a, 2b,
2c and the connection holes 8a, 8b and 8c corresponding to the connection portions of the FPCs 4a, 4b and 4c, these are sandwiched by a welding head and a jig and connected by thermocompression bonding. FPC4 between 2a, 2b, 2c
a, 4b, and 4c, it is easily connected, and manufacturing is easy.

When the image display unit is manufactured as described above, the holder 3 functions not only as a holder but also as the display panel 1 and the driving substrates 2a and 2a.
It also has a function as a pallet for transporting b and 2c, and there is no need to prepare a separate pallet. In addition, if the holder 3 is used as a pallet, the work of transporting the used pallet to the previous process in order to use the pallet again becomes unnecessary, and workability is improved.

The image display panel unit of the present embodiment as described above is incorporated in, for example, the following image display device. That is, as shown in an exploded perspective view in FIG. 5, it is constituted by a frame 21, an image display unit 22, a backlight unit 23, a chassis 24, a pair of speakers 25, a shield cover 26, and a rear cover 27. However, in FIG.
Is omitted from the drawing.

The bezel-shaped frame 21 is arranged on the front side of the image display device, and has a window 31 for presenting an image displayed on the image display unit 22. The image display unit 22 is incorporated into the frame 21 with screws from the rear through the screw holes 13 at the four ends described above, and presents the image from the window 31 to form a screen. On this screen, for example, a video image, a television image, a computer graphic image, and the like can be displayed.

The chassis 24 is disposed on the rear side of the image display device, and engages with the frame 21 so as to sandwich the image display unit 22 therebetween. The chassis 24 has a U-shaped cross section, and the image display unit 2
A groove is formed to open toward the second side. And
The backlight unit 23 is provided in this groove. The backlight unit 23 is a surface light source in which a light source such as a fluorescent tube is housed in a case 32. The backlight unit 23 is detachable with respect to the above-mentioned groove, and illuminates the image display unit 22 from the back side.

The pair of speakers 5 are incorporated separately on the left and right sides of the frame 1. Also, the shield cover 26
Is attached to the chassis 24. further,
The rear cover 27 is attached to the back side of the frame 21 to protect the image display unit 22, the backlight unit 23, the chassis 24, and the like. Therefore, in the assembled state, the outer shape is formed by the frame 21 and the rear cover 27.

By using the image display unit of the present embodiment as described above, it is not necessary to dispose the drive board around the back side of the backlight by utilizing the flexibility of the FPC as in the related art. The manufacture of the display device is also easy.

[0058]

As is apparent from the above description, the image display unit of the present invention comprises a display panel, a drive board for driving the display panel, and a display panel at a position corresponding to the display panel. The display panel is disposed on the opening of the holder, the driving substrate is disposed on the driving substrate holding portion, and the display panel is driven by the display panel. Since the boards are connected by a flexible printed wiring board, the drive board is supported by the holder,
The driving substrate does not hang on the display panel via the flexible printed wiring board, and the flexible printed wiring board is not easily damaged or the thermo-compression connection part of the flexible printed wiring board is hardly damaged, thereby suppressing manufacturing defects. Can be

In the image display unit of the present invention, if the holder has a hole at a position corresponding to the electronic component mounting portion of the drive substrate of the drive substrate holding portion, the electronic component mounted on the drive substrate can be used. Stored in the holder,
The occurrence of breakage and damage of electronic components is also suppressed, and manufacturing defects are suppressed.

In manufacturing the image display unit of the present invention as described above, a display panel and a drive substrate are manufactured, and an opening having an opening area smaller than a plane area of the display panel is provided at a predetermined position. And after manufacturing a holder having a driving substrate holding portion, disposing the display panel on the opening of the holder and disposing the driving substrate on the driving substrate holding portion, a flexible printed wiring board connects the display panel and the driving substrate. If the connection is made, the display panel and the driving board are connected by the flexible printed wiring board in a state where the driving board is already supported by the holder, so that the driving board is connected to the display panel via the flexible printed wiring board. Without hanging from
Damage to the flexible printed wiring board and damage to the thermocompression bonding portion of the flexible printed wiring board are less likely to occur, reliability is ensured, and manufacturing defects are suppressed.

In the method of manufacturing an image display unit, the holder may have a hole at a position corresponding to a connection between the display panel and the flexible printed wiring board and a position corresponding to a connection between the drive board and the flexible printed wiring board. These are sandwiched by a welding head and a jig through a hole corresponding to the connection part of the display panel and the flexible printed wiring board, connected by thermocompression bonding, and a hole corresponding to the connection part of the drive board and the flexible printed wiring board is formed. If these are sandwiched by a welding head and a jig via a jig and connected by thermocompression bonding, the display panel and the driving board are easily connected by a flexible printed wiring board, and the manufacturing is easily performed.

When the image display unit is manufactured as described above, the holder has not only a function as a holder but also a function as a pallet for transporting a display panel or a driving substrate to be arranged. There is no need to prepare a separate pallet. Further, if the holder is used as a pallet, it is not necessary to transport the used pallet to a previous process in order to use the pallet again, and the workability is improved.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an image display unit to which the present invention is applied.

FIG. 2 is a plan view schematically showing a holder of an image display unit to which the present invention is applied.

FIG. 3 is a plan view schematically showing a state in which a display panel and a driving substrate are arranged in a holder of an image display unit to which the present invention is applied.

FIG. 4 is an enlarged sectional view of a main part schematically showing a state in which a display panel and a driving substrate are connected by an FPC.

FIG. 5 is an exploded perspective view showing an image display device in which an image display unit to which the present invention is applied is incorporated.

FIG. 6 is an enlarged schematic perspective view of a main part of an example of a display panel.

FIG. 7 is a schematic cross-sectional view of a main part showing an example of a display panel.

FIG. 8 is a schematic diagram showing data electrodes, plasma electrodes, and discharge channels of the display panel.

FIG. 9 is a plan view schematically showing a state in which a driving substrate is connected to a display panel.

FIG. 10 is a side view schematically showing a state in which a driving substrate is connected to the display panel.

[Explanation of symbols]

1 display panel, 2a, 2b, 2c drive board, 3 holder, 4a, 4b, 4c flexible printed wiring board, 5 opening, 6a, 6b, 6c drive board holding section,
7a, 7b, 7c, 8a, 8b, 8c Connection holes, 9
a, 9b, 9c Holes for storing electronic components, 19a, 19b
Welding head, 20 jig, 20a, 20b protrusion

Claims (5)

[Claims] 1. A thin dielectric plate is disposed at a predetermined interval on a first substrate on which a plurality of discharge electrodes substantially parallel to each other are formed on one main surface, and the periphery is sealed with a seal portion. A plasma panel is thereby formed, and a display panel formed by laminating, via an electro-optic material layer, a second substrate having an electrode substantially orthogonal to the discharge electrode formed on an opposite surface on the dielectric thin plate. A driving substrate for driving the display panel; and a holder having an opening having an opening area smaller than a plane area of the display panel at a position corresponding to the display panel, and having a driving substrate holding portion, wherein the display panel is a holder. An image display unit, wherein the drive substrate is disposed on the drive substrate holding section, and the display panel and the drive substrate are connected by a flexible printed wiring board. 2. The holder according to claim 1, wherein the holder has holes at positions corresponding to a connection between the display panel and the flexible printed wiring board and a connection between the drive board and the flexible printed wiring board. Image display unit as described. 3. The image display unit according to claim 1, wherein the holder has a hole at a position corresponding to an electronic component mounting portion of the drive board of the drive board holding section. 4. A dielectric thin plate is disposed at a predetermined interval on a first substrate on which a plurality of discharge electrodes substantially parallel to each other are formed on one main surface, and the periphery is sealed with a seal portion. A plasma panel is thereby formed, and a display panel is formed by laminating a second substrate having an electrode substantially orthogonal to the discharge electrode formed on the opposite surface of the dielectric thin plate via an electro-optic material layer. Manufacturing a drive substrate for driving the display panel; manufacturing a holder having an opening having a smaller opening area than a plane area of the display panel at a predetermined position and having a drive substrate holding portion. And disposing the display panel on the opening of the holder and disposing the driving substrate on the driving substrate holding portion, and connecting the display panel and the driving substrate by a flexible printed wiring board. Method for manufacturing an image display unit, wherein the door. 5. The display panel and the flexible printed wiring board, wherein the holder has holes at positions corresponding to a connection between the display panel and the flexible printed wiring board and a connection between the drive board and the flexible printed wiring board. These are sandwiched by a welding head and a jig through a hole corresponding to the connection part, and connected by thermocompression bonding.The welding head and a jig are connected through a hole corresponding to the connection part of the drive board and the flexible printed wiring board. The method for manufacturing an image display unit according to claim 4, wherein these are sandwiched and connected by thermocompression bonding.