WO2004027812A1

WO2004027812A1 - Planar display

Info

Publication number: WO2004027812A1
Application number: PCT/JP2003/011896
Authority: WO
Inventors: Miyori Nagashima; Takao Umeda; Takeshi Yamanaka; Joichi Endo; Kanzo Yoshikawa
Original assignee: Sankyo Co., Ltd.
Priority date: 2002-09-20
Filing date: 2003-09-18
Publication date: 2004-04-01
Also published as: AU2003264489A1

Abstract

A planar display suitable for forming a large planar display by arranging a large number of planar displays in which a light emitting space is defined by a front plate (113) and a back plate (107) and non-display region at the outermost circumferential part is formed not larger than one half of the interval between display elements. Protrusions (111, 112) are formed on any one of the front plate and the back plate, and a part (116) for jointing the facing parts is formed on top of the protrusion (111, 112) existing in a portion other than a region for sectioning the display elements.

Description

Specification

Flat panel display

Background technology

The present invention relates to a flat panel display device, and more particularly to a unit flat panel display device suitable for forming a large flat panel display device by arranging a plurality of unit plasma display devices in close proximity. The present invention relates to a flat-panel display device which has a small size and excellent strength and discharge characteristics.

As a means for displaying images on televisions and computers, flat display devices such as liquid crystal display devices, plasma display devices, and field emission display devices have been proposed in place of CRTs.

These have the features of being thinner, smaller in mass and lower in power consumption than CRTs, and their use is expected to continue to increase in the future.

These flat-panel display devices have been increasing in size of the display screen.However, the enlargement of the display screen requires a large-area member and a large-scale manufacturing device capable of handling the same. There is a limit to the size of the image display device.

In view of this, a plurality of unit flat-panel image display devices are arranged, and a flat-panel display device capable of transmitting an electric signal obtained by dividing an image to each unit flat-panel image display device and displaying a large image as a whole has been developed. Proposed. As a large-sized display device having a large number of unit flat-panel display devices, a device using a CRT or the like has already been used.However, there is an area where no image is displayed between the unit display devices, which is unnatural. However, there is a problem that the image becomes poor and display characteristics are deteriorated, and the thickness is large.

Flat display devices are generally characterized in that the width of the periphery of the display device is smaller than that of a CRT. However, simply arranging a flat display device to form a large flat display device could not eliminate an area where no image is displayed between the display devices. Therefore, various methods for arranging a plurality of display devices have been proposed. By collecting power supply terminals for signals and other signals indispensable to the image display device at one end and arranging the side surfaces at the other end side, the non-display area at the boundary between the unit display devices is reduced. A technology has been proposed (JP (A) 6-3 1 4 0 6 6). However, such a display device also needs to be provided with a terminal portion on at least one side. For this reason, it is not possible to form a large-sized display device in which a large number of unit display devices are arranged vertically and horizontally, because other unit display devices cannot be disposed in contact with the portion where the terminal portion is formed. Was.

For example, in a 40-inch class plasma display device, a sealing portion with a width of about 5 mm to 10 mm is formed around the periphery and the front plate and the back plate are joined to keep the internal space confidential and secure. Although the width of the non-display area around the periphery of the unit display device constituting a large-sized display device is reduced, it is not possible to form a sealing portion with such a width. Was.

For this reason, there has been a problem that the bonding strength at the peripheral portion becomes insufficient. Therefore, at least one of the glass plates is made of thin glass with a thickness of about 1.0 mm or less, and the glass frit is placed not only on the periphery of the screen but also on the upper part of the partition wall to define the space between the front and rear glass substrates inside the screen. It has been proposed to apply a glass frit to form a vacuum vessel of a display device in which both substrates are bonded (JP200-2808516).

However, the method of applying glass frit to the upper part of the partition wall that composes the display device and bonding it to the front glass plate causes misalignment of the frit application position and dripping when the glass frit is melted, causing the frit to enter the display pixel. There is a problem that the phosphor on the side wall of the partition is easily deteriorated and the luminance is reduced. '

In addition, if the front glass and the upper part of the partition wall are hermetically sealed by a frit without any gap, there is no movement of the electric charge in the panel space, so that a portion where the address discharge voltage becomes high is generated and the discharge becomes unstable. A new problem arises in that the evacuation time is lengthened during production, which reduces production efficiency.

In particular, when partition walls were provided on the four sides of the display pixels, adverse effects on address discharge and prolongation of the evacuation time were remarkable, causing a serious problem. In order to solve this problem, it is conceivable to provide a gap between the front glass plate and the upper part of the partition wall by providing a part of the bonding part.However, since the thickness of the bonding layer fluctuates depending on the bonding conditions, the gap in the part without the bonding layer can be considered. However, when the gap is small, the effect is small, and when the gap is large, erroneous discharge occurs between adjacent pixels. The present invention relates to a flat display device used for forming a large-screen display device by arranging a plurality of flat display devices, wherein a non-display formed between adjacent flat display devices when the flat display device is disposed. In addition to reducing the area, applying a bonding method between the front plate and the back plate that maintains sufficient adhesive strength and does not deteriorate the phosphor, and maintains the gap between the upper part of the partition and the glass plate facing to a predetermined size. It is an object of the present invention to provide a flat display device having sufficient display device strength and good exhaust characteristics and stabilizing discharge characteristics. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a diagram illustrating a flat display device of the present invention.

FIG. 2 is a diagram illustrating the structure of the flat display device of the present invention.

FIG. 3 is a diagram for explaining another embodiment of the present invention.

FIG. 4 is a diagram for explaining another embodiment of the present invention.

FIG. 5 is a diagram illustrating an example of a method for manufacturing a front plate.

FIG. 6 is a diagram illustrating an example of a method for manufacturing a back plate of a flat panel display device. FIG. 7 is a diagram for explaining another embodiment of the present invention.

FIG. 8 is a diagram illustrating an example of the arrangement of the joints. Disclosure of the invention

The present invention provides a flat panel display device in which a light emitting space is formed by a front plate and a rear plate, and a non-light emitting region at an outermost peripheral portion is formed to be 1 or less of a display pixel interval, wherein at least one of a front plate and a rear plate is provided. This is a flat-panel display device in which a ridge is formed on one side, and a joining portion for joining an opposing portion is formed on the top of the ridge that exists outside the region that partitions the display pixels.

Further, the flat display device according to the above flat panel display device, wherein the protruding strips are partition walls that partition a display space, and a joint is formed at a portion of the partition wall other than a region that partitions display pixels.

The convex stripe is the above-mentioned flat panel display device which is provided continuously and integrally with a pixel forming partition which partitions display pixels.

The ridges can be placed on any part that does not affect the indication etc., By integrally forming the partition with the partition that divides the display pixel, the manufacturing process can be simplified, and a ridge having a large strength can be formed.

Further, in the flat display device described above, the spacing member is arranged in a portion facing the ridge, and a joint is formed in a region other than the spacing member.

The flat display device according to the above flat panel display, wherein a spacing member is disposed at a portion facing the ridge, and a joining portion is formed between the spacing member and the ridge to be joined. Further, in the flat display device, the display pixel is surrounded by a partition body, and a joint is formed in a convex strip connecting the partition bodies surrounding the display pixel to each other.

Further, in the case where a spacing member is provided so that the gap between the upper part of the partition and the front plate is kept constant, it is preferable to arrange the partition so as to surround four sides of the display pixel. By adopting this structure, the phosphor application area can be increased, and the use efficiency of ultraviolet rays can be increased, so that the brightness and efficiency can be increased. In addition, the problem of adversely affecting the address discharge and the problem of prolonging the evacuation time, which are problems when the four sides are surrounded by partition walls, can be solved by mounting the space holding member.

Further, the ridges are formed on the outer periphery of a region where the outermost peripheral display pixels of the flat display device are formed, and are joined to the front plate at the joints formed at the tops of the ridges. This is a flat display device.

Further, the flat display device is a flat display device in which a ridge provided on an outermost peripheral portion of the display device is formed of a hermetic sealing material, and hermetically sealed between opposing portions.

After forming a partition body for partitioning display pixels, a convex body made of a hermetic sealing material is provided so as to border the outer periphery of the flat panel display device, and is bonded to the front plate at the upper end. Thus, sufficient hermetic sealing characteristics can be obtained.

Further, a flat display device in which a protective film is formed on the front plate on which the bonding portion is formed, except for a portion opposed to the outermost convex body, and the front plate and the rear plate are heat-fused to face each other. This is a flat display device in which a plurality of the above flat display devices are closely arranged and arranged on the same plane to be integrated.

The flat display device according to the present invention, wherein the flat display device of the present invention is a plasma display device. It is a place. BEST MODE FOR CARRYING OUT THE INVENTION

According to the present invention, the sealing and bonding strength of a peripheral portion of a unit flat display device used for forming a large flat display device in which a large number of flat display devices are arranged are determined by using a display pixel other than the peripheral portion. It has been found that the improvement can be achieved by providing a joint portion in a portion where is not partitioned.

That is, in a flat-panel display device in which a large number of flat-panel display devices are arranged to display a large image, the width of the non-display portion formed in the peripheral portion is set to be equal to or less than 1 Z2 of the display pixel interval, so that adjacent display portions are adjacent. Since the display pixels can be arranged at uniform intervals between the flat display devices, a good image can be obtained by a large flat display device. Is small because the width of the outer periphery of the display pixel is small, so the bonding and sealing at the outer periphery may have low strength, or may occur when the junction is formed on the top of the partition wall that separates the pixels. In this case, the display quality is reduced by forming a bonding portion in a portion other than a region where display pixels are partitioned and bonding the front plate and the rear plate.

FIG. 1 is a view for explaining an embodiment of the flat display device of the present invention. FIG. 1 (A) shows the whole flat display device, and FIG. 1 (B) shows a unit flat display device. Figure 1

(A) is shown on a different scale.

The flat-panel display device 101 of the present invention has a predetermined number of unit flat-panel display devices 102 arranged adjacent to each other. FIG. 1 shows an example in which six unit flat display devices 102 are arranged in the horizontal direction and four in the vertical direction.

The unit flat-panel display device 102 has a display pixel 10 composed of display cells of three colors: a red (R) cell 103, a green (G) cell 104, and a blue (B) cell 105. 6, and each display pixel 106 is arranged at a constant display pixel interval a.

Further, a peripheral interval b between a display pixel 106 located at a peripheral portion of the unit flat display device and an end face of the unit flat display pixel is formed by an adjacent unit flat display device. The size of the non-display area to be displayed does not exceed 1 Z2, which does not affect the visibility. Specifically, the display pixel interval a is set to a size of about 1Z2, and the peripheral interval b is set so that the non-display area formed by the adjacent unit planar image display device is In order not to affect the visibility in the portion, it is necessary to set a value smaller than 1 to 2 of the size of the display pixel interval that affects the visibility. This makes it possible to provide a flat-panel image display device that does not lower the visibility even when a small gap is formed when a large number of unit flat-panel image display devices are arranged.

In the flat display device of the present invention, a plurality of the flat display devices are arranged vertically and horizontally in a state where no protrusions such as electric wiring are present on the end face of the front plate 113 of the unit flat image display device 102. In this case, the front panel of each unit flat-panel display device 102 can be placed in close contact with the unit flat-panel display device. It is equal to the interval between pixels.

Therefore, even when a large number of unit flat display devices are arranged vertically and horizontally to produce a large area flat image display device, a large area flat display device has a large display with excellent display quality. Can be displayed.

FIG. 2 is a diagram illustrating the structure of the flat display device of the present invention, and is a diagram illustrating a color plasma display as an example.

Fig. 2 (A) shows a plan view of a part of a unit flat display device constituting a large flat display device, and Fig. 2 (B) shows a part of a cut surface cut along line A-A '. FIG.

It has display pixels 106 composed of three color display cells, red (R) cell 103, green (G) cell 104, and blue (B) cell 105. Each display pixel 106 are arranged at a constant display pixel interval a. Further, a peripheral interval b between the display pixel 106 located around the unit flat-panel display device and an end face of the unit flat-panel display device is / of the display pixel interval a.

After the address electrodes 108 are formed on the back plate 107, a dielectric layer 109 serving as a white back layer made of a glass frit containing a white pigment is formed. 9, a partition body 110 for partitioning the display pixels, a display-to-display pixel convex stripe 111 composed of a partition between display pixels, and a peripheral portion of the unit display device. , And a peripheral convex strip 112 surrounding the display pixel is formed.

On the other hand, a transparent electrode (not shown) such as ITO and a pass electrode (not shown) are formed on the front plate 113, and a dielectric layer 114 and a black matrix 115 are formed. Over the entire surface, and is covered with a protective film 125 made of magnesium oxide. 2 is joined to the opposing front plate 113 by forming a joint portion 116 with the front plate 113.

As a result, a large number of joints 116 can be arranged over the entire surface of the flat display device, and the joints 116 are formed in regions other than partitioning the display pixels of the partition. Therefore, even when the glass frit at the joint is fused and integrated at the top of the convex body, the fused material of the glass frit hangs down the partition wall to cover the surface of the phosphor provided on the display pixel, There is no problem such as lowering the reflectance of the backing layer, and the phosphors of each color are excited by the ultraviolet light generated in the discharge space to emit light, and a high quality color image is displayed.

FIG. 3 is a view for explaining another embodiment of the present invention, and is a view for explaining a cross section of a portion similar to the portion in FIG. 2 (B), and FIG. 3 (B) is a view for explaining FIG. 3D is an enlarged view of the joint shown in FIG. 3, and FIG. 3D is an enlarged view of the joint shown in FIG. 3C.

After forming the address electrode 108 on the back plate 107, a dielectric layer 109 serving as a white back layer made of glass frit containing a white pigment or the like is formed, and the dielectric layer 109 is formed. On 109, a partition 1101 for partitioning the display pixels, a projection 1111 between display pixels composed of a partition between display pixels, and an outermost peripheral portion of the unit flat-panel display device. Peripheral convex stripes 112 surrounding display pixels are formed.

On the other hand, a transparent electrode (not shown) such as ITO and a pass electrode (not shown) are formed on the front plate 113, and a dielectric layer 114 and a black matrix 115 are formed. A protective film 125 made of magnesium oxide is formed over the entire surface. A spacing member 117 is provided at a position facing the inter-display-pixel ridges 111 provided on a portion of the back plate which is not located in the display pixel area. Further, a joining portion 116 is provided around the periphery of the spacing member 117, so that the inter-display pixel convex stripes 111 are provided. Are joined to the front plate 1 13.

When the height of the inter-display-pixel convex stripes 1 1 1 and the partition wall that partitions the display pixels are made at the same height, either integrally or separately, the partition wall that partitions the display pixels and the front plate A predetermined gap corresponding to the thickness of the spacing member 117 is formed between the gaps. As a result, when the front plate and the upper part of the partition are hermetically sealed without gaps due to the melting of the frit glass, there is no movement of electric charge in the space of the display device, so that the address voltage becomes slightly higher and discharge failures are likely to occur. When manufacturing a flat display device, it is possible to solve the problem that the evacuation time from a narrow space is lengthened and the evacuation efficiency is reduced.

The partition wall 110 that partitions the display pixel and the convex body 111 that is not located in the display pixel area may be formed integrally when forming the partition body as shown in FIG. The body 1 1 1 may be provided independently. In the case where the convex bodies 111 are provided independently, it is preferable to provide a black matrix or the like having a size which does not affect display.

In particular, when a partition surrounding the display pixel with a square or hexagonal shape is provided, if the front panel is joined to the top of the partition, the display pixel space is isolated from the surroundings and address discharge occurs. It can improve the adverse effect on the air and the significantly longer exhaust time.

Further, by providing the spacing member, it is possible to prevent a change in the thickness of the joining portion due to a slight difference in joining conditions at many joining locations, and to adjust the gap to a predetermined size.

The thickness of the spacing member is preferably 2 m to 10 m, and more preferably 4 m to 7 m. If it is smaller than 2 m, exhaust takes time and the address discharge becomes unstable. On the other hand, if it is larger than 10, there arises a problem that light is emitted from pixels other than a predetermined display pixel due to the influence of light emission of an adjacent display pixel.

In addition, as shown in FIG. 3 (C), the gap maintaining member 1 17 was joined to the joint 1 116 arranged on the ridge by applying a pressing force F, and as shown in FIG. 3 (A). Similarly, it is possible to join at a predetermined interval at the joint. FIG. 4 is a view for explaining another embodiment of the present invention. FIG. 4 is a view for explaining a cross section taken along line BB ′ in FIG. 2 (A). It is a figure explaining the joining part in the peripheral part convex strip part provided in the peripheral part.

FIG. 4 (A) is a diagram illustrating a joint portion in the peripheral ridge portion.

After the address electrodes 108 are formed on the back plate 107, a dielectric layer 109 acting as a white back layer is formed, and a display image is formed on the dielectric layer 109. A partition wall 110 that partitions the element 120 is formed, and a phosphor 121 is formed on the display pixel side surface of the display pixel 120 and the partition wall 110.

On the other hand, a transparent electrode 122 such as ITO and a pass electrode 123 are formed on the front plate 113, and a dielectric layer 114, a plaque matrix 115 and a protective film 122 made of magnesium oxide are formed. 5 are formed.

A joining portion 1 16 made of glass frit or the like is formed on the peripheral projection 1 1 2 provided on the periphery of the partition 1 1 0 that divides the display pixels, so that the back plate side and the display surface side are joined. Are combined.

Also, as shown in FIG. 4 (B), the peripheral ridges 112 are joined together, and a sealing member 124 is applied to the peripheral ridges 112, and the front plate 113 and the back plate are joined. The display space formed at the same time when the joint portion 116 with the face plate 107 is formed may be hermetically sealed. Also, FIG. 4 (C) shows that the hermetic sealing shown in FIG. 4 (B) is performed by the sealing material arranged on the wall surface of the peripheral ridge, whereas the peripheral ridge 1 1 2 The front plate 1 13 and the back plate 1 07 are joined together, and a sealing frit material or the like is sealed from the outside to the entire side of the peripheral ridge 1 1 2 The member 124 can be filled and hermetically sealed.

Hereinafter, an example of a method for manufacturing the front panel of the flat display device of the present invention will be described. FIG. 5 is a diagram illustrating an example of a method for manufacturing a front plate.

As shown in Fig. 5 (A), a transparent electrode 122 made of ITO or the like is formed in a desired pattern on a front plate 113 made of a transparent glass such as soda lime glass by sputtering, etc. The bus electrode 123 for supplying power to the electrode 122 is formed by applying a silver paste, and a chromium-copper-chromium three-layer laminated film is formed by sputtering and etching. Next, as shown in FIG. 5B, a dielectric layer 114 is coated on the electrodes. The dielectric layer can be manufactured by forming a layer of a glass paste that melts at a low temperature by a method such as screen printing, followed by drying and firing.

Further, as shown in FIG. 5 (C), a glass paste containing a black pigment for improving contrast and melting at a low temperature is applied on the dielectric layer 114 by screen printing or the like, and dried and dried. Baking to form a black matrix 1 15.

On the black matrix, an interval holding member 117 that can form a predetermined interval when forming a joint with the convex strip formed on the back plate side is formed. When the space holding member 117 is arranged at a position visible from the display surface side, it is preferable that the space holding member 117 be formed of a black material similar to the black matrix.

Further, a protective film 125 of about 800 nm in thickness made of transparent magnesium oxide is preferably formed on these members to a uniform thickness. The protective film made of transparent magnesium oxide is formed by an electron beam heating device, a plasma heating device, or the like.

FIG. 6 is a diagram illustrating an example of a method for manufacturing a back plate of a flat panel display device.

As shown in FIG. 6 (A), a rear plate 113 made of transparent glass such as soda lime glass is provided with a silver paste or the like for forming an address electrode 108 for conductively connecting an external circuit. The conductive composition is formed into a film by a method such as screen printing.

Next, as shown in FIG. 6 (B), the address electrode is covered with a dielectric, and a white inorganic oxide is dispersed in a low-melting glass that functions as a phosphor base and a reflective film, that is, a white back layer. The resultant is applied to a thickness of about 15 m and fired to form a dielectric layer 109.

Next, as shown in FIG. 6 (C), a partition wall 110 that partitions the display pixel and a convex strip 111 that forms a joint with the opposing front plate are formed.

The partition walls and ridges are formed by repeating a paste consisting of white or black pigment, organic binder, organic solvent, etc. on glass that is melted at a low temperature to form a predetermined pattern by screen printing, or to a specified thickness. The film can be manufactured by forming the formed film into a predetermined pattern by sandplast and then firing. The partition wall and the ridge are manufactured in the same manufacturing process by using the same height. Can be built.

Next, the phosphor paste is applied to the display pixels by screen printing for each color, and dried and fired.

By forming the ridges and the partition using the same material, it is possible to manufacture them in the same process, but the outer periphery formed so as to surround the unit flat display device at the outermost periphery The front ridge and the rear plate are made of a material that is relatively soft and has excellent airtightness compared to the material of the ridge that is formed on the partition wall or other parts. And the hermetic sealing characteristics can be improved.

In the above description, the method of applying the glass frit for forming the bonding portion on the protection film after forming the protection film has been described.However, the protection film is formed after the glass frit for forming the bonding portion is applied. You may.

In particular, when a magnesium oxide layer is used as a protective film, magnesium oxide reacts with carbon dioxide and moisture in the air, so that after the protective film forming step, do not come into contact with moisture, carbon dioxide, etc. Is preferred.

The process of forming the protective film in consideration of such a problem will be described below.

FIG. 7 is a view for explaining another embodiment of the present invention, and is different from that shown in FIG. 3 (A) in the order of forming the protective films. 7 (A) shows an overall view, FIG. 7 (B) shows an enlarged view of the portion A in FIG. 7 (A), and FIG. 7 (C) shows an enlarged view of B in FIG. 7 (A). FIG.

After forming the address electrodes 108 on the back plate 107, a dielectric layer 109 serving as a white back layer made of glass frit containing a white pigment or the like is formed. On the top of the display panel 9, there is a partition 1 1 0 that partitions display pixels, a display-to-pixel projection 1 1 1 consisting of a partition between display pixels, and a display located at the outermost periphery of the unit flat-panel display device. Peripheral convex stripes 112 surrounding the pixels are formed.

On the other hand, a transparent electrode (not shown) such as ITO and a bus electrode (not shown) are formed on the front plate 113, and a dielectric layer 114 and a black matrix 115 are formed. A spacing member 117 is arranged at a position facing the ridge member 111, and a joining portion 116 is provided around the periphery of the spacing member 117.

Also, as shown in the enlarged view of FIG. 7 (C), the portion facing the peripheral convex body 1 1 2 Also, a joint portion 116 is formed, and a protective film 125 made of magnesium oxide is formed over the entire surface except for a joint portion facing the peripheral convex body 112. When the front plate 113 and the rear plate 107 are brought into close contact with each other and heated to a temperature higher than the softening point of the glass frit of the joint 116, the glass frit of the joint 116 is softened. The protective film 125 covering the upper portion is destroyed, and the bonding layer appears to enable bonding with the opposing member.

In addition, since the protective film is destroyed only in the portion where the glass frit for forming the joint is applied, the portion other than the joint can be covered with the protective film.

On the other hand, a large airtightness is required for a joint formed on the ridge provided on the outermost peripheral portion. In order to improve the airtightness, it is preferable that the glass frit at the joint between the convex strip formed at the outermost peripheral portion and the magnesium oxide forming the protective film be avoided.

Therefore, when forming the protective film, as shown in the enlarged view of FIG. 7 (C), a mask or the like is arranged in a region facing the outermost peripheral ridge, and the protective film is not formed. Preferably.

The joint between the front panel and the rear panel can be formed in any area that does not adversely affect the display when viewed from the front panel side.Figure 8 shows a plan view from the display surface side. As shown in the figure, it is preferable to arrange them uniformly on the whole or peripheral part.

FIG. 8 (A) shows an example in which the joints 1 16 are uniformly distributed, and FIG. 8 (B) shows an example in which the joints are uniformly arranged in the periphery. ing. In a flat-panel image display device, a rare gas is sealed at a pressure of about 23 compared to the atmospheric pressure, and the flat image display device is pressed from the outside by the difference between the pressure acting on the glass plate surface and the internal pressure. The front plate and the back plate can be uniformly held by arranging the joints at the positions.

In the above description, the case where the flat display device of the present invention is a plasma display, that is, a PDP, has been described. However, a self-luminous unit flat display device such as an FED (field emission display) or a fluorescent display device has been described. The present invention is applied to a flat display device used for forming a large-sized display device by arranging a plurality of display devices vertically and horizontally. Industrial applicability

The flat display device of the present invention is a flat display device in which a large number of flat display devices are closely arranged in parallel and used as a unit flat display device of a large-sized image display device. Even if the outermost non-light-emitting area is formed within 1Z2 or less of the display pixel interval, the joints are arranged over the entire display surface and have sufficient strength Can be obtained.

In addition, since the bonding portion is formed in a portion other than the display pixel area, the bonding material does not affect the display pixels, and the distance between the front panel and the partition wall that partitions each display pixel is set to a predetermined size. Therefore, a stable flat display device with excellent display quality can be obtained.

Claims

The scope of the claims

1. In a flat panel display device in which a front panel and a rear panel form a light-emitting space and the outermost non-display area is formed to be less than or equal to 12 pixel intervals, at least one of the front panel and the rear panel is used. A flat display device, characterized in that a convex stripe is formed on one of the sides, and a joining portion for joining an opposing portion is formed on the top of the convex stripe existing in a region other than a region for partitioning a display pixel.

2. The flat display device according to claim 1, wherein the ridges are partition walls that partition the display space, and a joint is formed in a portion of the partition body other than a region that partitions display pixels. .

3. The flat display device according to claim 1, wherein the ridges are provided continuously and integrally with the pixel forming partition that partitions the display pixels.

4. The method according to any one of claims 1 to 3, wherein a spacing member is disposed at a portion facing the ridge, and a joining portion is formed at a portion other than a portion where the spacing member contacts. Flat panel display.

5. The flat display device according to any one of claims 1 to 4, wherein the joints are arranged at uniform intervals.

6. The spacing member according to claim 1, wherein the spacing member is disposed at a portion facing the ridge, and a joining portion is formed between the spacing member and the ridge to be joined. Item 2. The flat panel display according to item 1.

7. The flat display device according to any one of claims 1 to 6, wherein the spacing member has a thickness of 2 / ^ m to 10 / ^ m.

8. The method according to claim 1, wherein the periphery of the display pixel is surrounded by a partition, and a joint is formed on a ridge that mutually connects the partition surrounding the display pixel. 13. The flat panel display according to claim 1.

9. The ridges are formed on the outer periphery of a region where the outermost peripheral display pixels of the flat display device are formed, and are joined to the front plate at a joint formed at the top of the ridges. The flat display device according to any one of claims 1 to 8, wherein

10. The ridge provided on the outermost peripheral portion of the display device is covered with a hermetic sealing material, and hermetically sealed between the opposing portions. Item 2. The flat panel display according to item 1.

11. The display device according to any one of claims 1 to 10, wherein the ridges provided on the outermost peripheral portion of the display device are formed of a hermetic sealing material, and are hermetically sealed between opposing portions. Or the flat panel display according to item 1.

12. A flat display device, comprising a plurality of the flat display devices according to any one of claims 1 to 11 arranged in a closely arranged manner on the same plane.

13. The flat display device according to claim 1, wherein the self-luminous unit flat display device is a unit flat display device selected from a plasma display, a field emission display, and a fluorescent display tube. Or the flat panel display according to item 1.