JP2008117674A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device having a frame-like support arranged surrounding an effective display region in which sealing shifting and leakage failure caused by deformation of the support are prevented to obtain a high quality display and high reliability. <P>SOLUTION: A positioning top 12A is installed adjacent to the corner parts of the support 3, thereby, deformation of the support 3 upon sealing is prevented and the occurrence of sealing shifting between the rear board 1 and the front board 2 is suppressed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flat-type image display device using electron emission into a vacuum formed between a front substrate and a back substrate, and in particular, to displace a support that is arranged and fixed around an effective display area. More specifically, the present invention relates to a support reinforcing (displacement preventing) structure.

  Conventionally, a color cathode ray tube has been widely used as a display device excellent in high luminance and high definition. However, with the recent improvement in image quality of information processing apparatuses and television broadcasts, there is an increasing demand for flat display (flat panel display) that has high brightness and high definition characteristics and is lightweight and space-saving.

  As typical examples, liquid crystal display devices, plasma display devices and the like have been put into practical use. In addition, as a self-luminous display device capable of achieving particularly high brightness, an electron emission display device utilizing electron emission from an electron source to a vacuum, or a field emission display device, and features low power consumption Various types of panel-type image display devices such as organic EL displays have been put into practical use.

  In a self-luminous flat panel display, a configuration in which electron sources are arranged in a matrix is known, and as one of them, the above-described electron emission type image display device using a small and accumulating cold cathode is known. Yes. The cold cathode of the electron emission type image display device includes spint type, surface conduction type, carbon nanotube type, metal-insulator-metal laminated MIM (metal-insulator-metal) type, metal-insulator-semiconductor. There are electron sources such as stacked MIS (Metal-Insulator-Semiconductor) type or metal-insulator-semiconductor-metal type.

  An electron emission type image display device includes a back substrate having an electron source as described above, a phosphor layer, and an anode that forms an acceleration voltage for projecting electrons emitted from the electron source onto the phosphor layer. 2. Description of the Related Art A display panel is known that includes a front substrate that is provided and a support that serves as a sealing frame that seals the internal space between the two substrates in a predetermined vacuum state. An image display device is operated by combining a drive circuit with this display panel.

  In an image display device having an electron source, the back substrate has a substrate made of an insulating material, and extends in one direction on the substrate and is arranged in parallel in another direction orthogonal to the one direction to scan in the other direction. A plurality of scanning signal wirings to which signals are sequentially applied are formed. A plurality of image signal wirings extending in the other direction and juxtaposed in the one direction so as to intersect the scanning signal wirings are formed on the substrate. The electron source is provided at each intersection of the scanning signal wiring and the image signal wiring, the scanning signal wiring and the electron source are connected by a power supply electrode, and current is supplied from the scanning signal wiring to the electron source.

  Each electron source is paired with a corresponding phosphor layer to constitute a unit pixel. Usually, one pixel (color pixel, pixel) is composed of unit pixels of three colors of red (R), green (G), and blue (B). In the case of a color pixel, the unit pixel is also called a sub-pixel (sub-pixel).

  In the flat-type image display device as described above, a plurality of spacing members (hereinafter referred to as spacers) are arranged and fixed in an effective display area surrounded by a support between the rear substrate and the front substrate. The distance between the substrates is maintained at a predetermined distance in cooperation with the support. This spacer is generally made of a plate-like body formed of an insulating material such as glass or ceramics, and is usually installed at a position that does not hinder the operation of each pixel.

  Further, Patent Document 1 discloses a configuration in which a plurality of divided wall members are combined and joined together as a support. The support disclosed in Patent Document 1 is divided into two long side wall members 3X1 and 3X2, two short side wall members 3Y1 and 3Y2, and four corner wall members 3C1, 3C2, 3C3, and 3C4. Each wall member 3X1, 3X2, 3Y1, 3Y2, 3C1 to 3C4 has a slope 3P formed in each of the portions that are adjacent to each other, and the normal line and the rear substrate 1 or A support is configured by making the intersecting angle of the normal line standing on the front substrate 2 an acute angle and bonding each other by the slopes 3P.

  Further, Patent Document 2 discloses a means for sealing with a sealing member with a support interposed in a peripheral portion between a back substrate and a front substrate. In Patent Document 2, a rear substrate, a front substrate, and a support are combined using a jig, arranged at a predetermined position, and sealed by applying a load.

JP 2002-298761 A JP 2004-127944 A

  In the background art, there is a need for a solution that avoids the sealing displacement and leakage failure between the two substrates that occur due to the deformation of the support in the high-temperature processing step of the manufacturing process. In Patent Document 1, as one of these solutions, the support body is an aggregate of a plurality of wall members, a slope is formed at the joint portion of these wall members, and the slope of the slope is specified so that the airtightness of the sealed section is improved. A configuration to maintain is proposed. In this proposed configuration, the bonding between the wall members is ensured and the airtightness between the two members is maintained, but further improvement is required for preventing the occurrence of a sealing deviation between the two substrates.

  In addition, when sealing a frame-shaped support between both substrates, a sealing member is temporarily bonded to the upper and lower end surfaces of the support in advance and combined with the peripheral edge between both substrates, and then the pressure is reduced. , Heat seal. Since the support is installed in a free state, the frame shape of the support 3 is deformed into a bobbin shape (inward direction) as shown in the plan view of the main part in FIG. As shown in the plan view of the main part in b), the support 3 is deformed such that it is deformed into a drum shape (outward direction), and the corners of the support 3 are lifted toward the substrate direction (vertical direction). There is a problem that it is difficult to obtain the positioning accuracy.

  In addition, with the jig-type sealing means, depending on the tact (process time) and process conditions, a large number of types of sealing jigs are required. Since the number of work steps increases, there are problems such as an increase in manufacturing cost.

  Therefore, the present invention has been made to solve the above-described conventional problems, and the purpose thereof is to suppress the occurrence of a sealing deviation between the two substrates due to the deformation of the support and to ensure an airtight seal. Thus, an object of the present invention is to provide an image display device with improved display quality and reliability.

  In order to achieve such an object, the image display device according to the present invention is provided with positioning pieces adjacent to the corners of the support so that the support is prevented from being deformed during sealing, and between the two substrates. The problem of the background art can be solved by suppressing the occurrence of sealing slippage.

  Further, in another image display device according to the present invention, the positioning piece is disposed adjacent to the corner and the side portion of the support member, so that the deformation of the support member is prevented and the occurrence of the sealing deviation between the two substrates occurs. By suppressing the problem, it is possible to solve the problems of the background art.

  According to the present invention, since the displacement of the support is prevented, the occurrence of a sealing deviation between the two substrates is suppressed, and an airtight seal is secured, so that the quality and reliability are improved, and high vacuum and high It has an extremely excellent effect that a fine image display device can be obtained.

  Further, according to the present invention, since a support positioning mechanism or the like in the sealing jig is not required, the jig unit cost is reduced, and deformation of the support is prevented at a low cost, so that the sealing displacement between both substrates is reduced. In addition to being able to suppress the occurrence of this, an extremely excellent effect that an airtight seal can be secured is obtained.

  Further, according to the present invention, the positioning piece can be used as a positioning guide for the rear substrate and the front substrate, so that the assembly accuracy can be improved.

  In addition, according to the present invention, it is possible to perform a high-temperature process in the manufacturing process, and an extremely excellent effect that a high-definition image display device can be obtained in a high vacuum can be obtained.

  In addition, according to the present invention, the positioning piece is disposed adjacent to the side wall of the support body, so that it is possible to prevent the electrode from being damaged, the occurrence of the inclination of the spacer and the breakage of the spacer, the high vacuum and the high definition. An extremely excellent effect that an image display device can be obtained is obtained.

  Moreover, according to the present invention, a wide effective area within the effective display area can be secured.

  In addition, according to the present invention, it is possible to secure the airtight seal between the plurality of support member pieces while maintaining the airtightness between them.

  Moreover, according to this invention, the deformation | transformation prevention effect of a support body can be doubled.

  In addition, according to the present invention, the withstand voltage in the effective display area is ensured, high-temperature processing is possible, and a high-definition and high-definition image display device can be obtained.

  In addition, according to the present invention, the positioning pieces can be optimally arranged for each substrate, and space can be effectively used, so that a high-definition image display device can be obtained.

  Further, according to the present invention, since the displacement is regulated over substantially the entire length of the support, it is possible to prevent the occurrence of sealing deviation and the leakage failure, and to obtain a high-vacuum, high-definition image display device. .

  In addition, according to the present invention, since the displacement of the support can be surely regulated, a high vacuum and high definition image display device can be obtained.

  Note that the present invention is not limited to the above-described configuration and the configuration of the embodiments described later, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. Here, the configuration in which the present invention is applied to the FED will be described, but it goes without saying that the present invention can be similarly applied to other similar image display devices or display devices similar thereto.

  FIG. 1 to FIG. 3 are diagrams for explaining an embodiment of the image display device of the present invention. FIG. 1A is a plan view showing a schematic configuration of the image display device as seen from the front substrate side. (B) is a plan view seen from the direction of arrow A in FIG. 1 (a), FIG. 2 is an enlarged cross-sectional view of the main part in FIG. 1 (a), and FIG. 3 is taken along line BB in FIG. It is the expanded sectional view cut | disconnected.

  1 to 3, reference numeral 1 is a back substrate, 2 is a front substrate, and the back substrate 1 and the front substrate 2 are made of a glass plate having a thickness of several millimeters, for example, about 3 mm. Reference numeral 3 denotes a frame-like support, and this support 3 is composed of a glass plate or a frit glass sintered body having a height of several mm, for example, about 3 mm. The support 3 is formed in a substantially rectangular frame shape, and is inserted around a peripheral portion between the back substrate 1 and the front substrate 2, and is made of a back substrate 1, the front substrate 2, and frit glass. The member 4 is hermetically sealed.

In the step of hermetically sealing the support 3 and the back substrate 1 and the front substrate 2 via the sealing member 4, for example, the sealing member 4 is made of amorphous frit glass, for example, PbO: about 75 wt% to 80 wt%. %, B ₂ O ₃ : about 10 wt%, others: about 10 wt% to 15 wt%, etc., and arranged on the upper and lower end surfaces of the support 3 and the peripheral portions of both substrates 1 and 2 stacked in the Z direction. It is airtight. A portion surrounded by the support 3 and the back substrate 1 and the front substrate 2 constitutes an effective display region 5 by the hermetic sealing, and the portion of the effective display region 5 is held in a vacuum as described later. Yes.

  Here, the hermetic sealing performed through the sealing member 4 is performed, for example, in a nitrogen atmosphere at a high temperature of, for example, about 430 ° C., and then, for example, heated at about 350 ° C., and then evacuated to a vacuum. A sealing method or the like can be used.

In FIG. 1, the Z direction indicates a direction orthogonal to the superimposed substrate surfaces of the rear substrate 2 and the front substrate 1. The space surrounded by the support 3, the back substrate 1, the front substrate 2, and the sealing member 4 is exhausted through the exhaust pipe EXC and is effective, for example, maintaining a vacuum degree of 10 ⁻³ to 10 ⁻⁵ Pa. A display area 5 is configured. The exhaust pipe EXC is attached to the outer surface of the back substrate 1 and communicates with a through hole HL drilled through the back substrate 1, and the exhaust pipe EXC is sealed after completion of exhaust.

  Reference numeral 6 denotes an image signal wiring. The image signal wiring 6 extends in the Y direction on the inner surface of the rear substrate 1 and is juxtaposed in the X direction. Reference numeral 7 denotes a scanning signal wiring. The scanning signal wiring 7 extends on the image signal wiring 6 in the X direction intersecting therewith and is arranged in parallel in the Y direction. An electron source is provided at each intersection of the scanning signal wiring 7 and the image signal wiring 6, the scanning signal wiring 7 and the electron source are connected by a connection electrode, and current is supplied from the scanning signal wiring 7 to the electron source. The

  In this configuration, the image signal wiring 6 is, for example, an Al / Nd film, and the scanning signal wiring 7 is, for example, an Ir / Pt / Au film. Reference numeral 8 denotes a spacer. The spacer 8 is made of a ceramic material and is shaped into a rectangular thin plate. In this embodiment, every other spacer 8 is arranged upright on the scanning signal wiring 9. The spacer 8 is usually installed at a position that does not hinder the operation of each pixel.

  The dimensions of the spacer 8 are determined by the substrate dimensions, the height of the support 3, the substrate material, the spacer spacing, the spacer material, etc. Generally, the height is about several mm and the thickness is several tens of μm. The practical value is about several mm or less and the length is about 50 mm to 1200 mm, preferably about 80 mm to 120 mm.

  Next, reference numeral 9 denotes an adhesive member, and this adhesive member 9 is made of, for example, an adhesive frit glass or a conductive adhesive containing a vitrifying component and, for example, silver fine particles, and the spacer 8 is attached to the back substrate 1. And fixed to the front substrate 2. Although this adhesive member 9 depends on its composition, the thickness is set to about 10 μm or more, preferably about 20 to 40 μm from the viewpoint of securing adhesion and fixation.

  On the other hand, on the inner surface of the front substrate 2, red, green, and blue phosphor layers are partitioned and arranged by a light-shielding BM (black matrix) film 10, and an anode electrode 11 made of a metal thin film is formed so as to cover them. Is provided. With this configuration, electrons radiated from an electron source (not shown) are accelerated and projected onto the phosphor layer constituting the corresponding subpixel. As a result, the phosphor layer emits light of a predetermined color and is mixed with the emission color of the phosphors of other subpixels to form a color pixel of a predetermined color.

  Further, the anode electrode 11 may be a striped electrode that is divided for each pixel column by intersecting with the surface electrode or the scanning signal wiring 7.

  In these drawings, reference numeral 12A denotes a positioning piece formed in a substantially L shape, and the positioning piece 12A is sealed in the same plane as the support 3 and adjacent to the outer wall surface of each corner. Adhering members 4a are interposed and arranged. This positioning piece 12A is made of, for example, crystallized frit glass. The sealing member 4a is made of a frit glass paste having a high softening point that is difficult to soften in the subsequent sealing process by the sealing member 4.

  In the sealing method of the back substrate 1 and the front substrate 2, the positioning piece 12A is bonded and fixed to the front substrate 2 on which the phosphor screen is formed in advance by a device with a predetermined alignment function. The attachment position is an empty space between the effective display area 5 and the support 3. Next, the front substrate 2 is mounted on a predetermined sealing jig, and the front substrate 2 is fixed. Next, the support 3 on which the sealing member 4 has been formed in advance is mounted on the front substrate 2 using a predetermined support positioning mechanism. Next, the rear substrate 1 on which electrodes are formed in advance and the front substrate 2 are overlapped with a predetermined apparatus, and the rear substrate 1 is fixed. Finally, it is put into a heating furnace and sealed by a sealing process at about 450 ° C.

  Further, in this positioning piece 12A, the corners joined to the front substrate 2 and the outer wall surface of the support 3 are accumulated in the sealing member 4a along the length direction as shown in an enlarged perspective view in FIG. The groove 12a is integrally formed. By forming the pool groove 12a, the sealing member 4a stays inside the pool groove 12a during sealing as shown in FIG. 3, so that the adhesion area between the front substrate 2 and the support 3 is increased. As a result, the adhesive strength is improved and both are firmly fixed, so that deformation of the support 3 is prevented.

  As for the dimension of this positioning piece 12A, the height H is desirably about 20 μm or more, and if it is less than this, the suppression effect may be impaired. Further, the length L and the thickness T may be dimensions that can provide strength sufficient to withstand pressing during deformation.

  In addition to the crystallized frit glass described above, for example, the positioning piece 12A is made of a frit glass having a softening point higher than that of the sealing member 4 or a crystallized glass or an amorphous frit having a high softening point. Thin glass or the like is used.

  FIG. 5 is a diagram showing an overall structure in which a substantially L-shaped positioning piece 12A is bonded and disposed adjacent to the outer wall surface of each corner (four corners) of the support 3, and FIG. FIG. 5B is a sectional plan view taken along the line AA of FIG. 5A.

  With the configuration of the first embodiment, even if the support 3 is deformed in the inner (center side) direction or the outer direction during high-temperature processing, the positioning piece 12A can prevent the deformation.

  6A and 6B are diagrams showing an overall configuration for explaining another embodiment of the image display device of the present invention. FIG. 6A is a partially broken plan view, and FIG. ) Is a cross-sectional view taken along the line A-A of FIG. 6 differs from FIG. 5 in that the prismatic positioning pieces 12B for preventing deformation are scattered in the same plane as the support 3 with the sealing members 4a interposed between the inner side walls. Adhesive arranged. The positioning piece 12B is made of, for example, crystallized frit glass.

  Further, in this positioning piece 12B, the sealing member 4a is accumulated along the length direction at the corner portion joined to the front substrate 2 and the outer wall surface of the support 3 as shown in an enlarged perspective view in FIG. The groove 12b is integrally formed. By forming the accumulation groove 12b, the sealing member 4a is accumulated inside the accumulation groove 12b at the time of sealing, so that the adhesion area between the front substrate 2 and the support 3 is enlarged, and the adhesion strength is improved. Since both are firmly fixed, deformation of the support 3 is prevented.

  As for the dimension of this positioning piece 12B, the height H is desirably about 20 μm or more, and if it is less than this, the suppression effect may be impaired. Further, the length L and the thickness T may be dimensions that can provide strength sufficient to withstand pressing during deformation. Further, it is desirable that the thickness T is as thin as possible from the viewpoint of effective use of the effective display area 5.

  In general, the deformation of the support 3 during high-temperature treatment such as hermetic sealing described above has a tendency that each side having a substantially rectangular shape is deformed in the inner (center side) direction, particularly in the central part on the long side. Since the amount of deformation is the largest, it is important to prevent deformation including this central portion. In the configuration of the second embodiment, the positioning piece 12B serving as a barrier is disposed on the inner side (center side) in the same plane as the support body 3, thereby preventing the deformation of the support body 3 and suppressing the displacement. It is possible to obtain a high-vacuum, high-definition image display device by preventing the occurrence of sealing deviation and leakage failure due to deformation of the body 3.

  Further, by arranging a plurality of positioning pieces 12B adjacent to the inner side wall of each side of the support 3, the effect of preventing deformation of the support 3 can be increased. Further, these positioning pieces 12B can be used as positioning guides for the support body 3, so that the positioning accuracy can be improved and the manufacturing process can be made more efficient.

  In the configuration of the second embodiment, the support 3 is prevented from being deformed by interposing the positioning pieces 12B serving as a deformation barrier of the support 3 on the inner side (center side) of the support 3 in the same plane. Thus, the displacement is suppressed, and the occurrence of sealing deviation and leakage failure due to deformation of the support 3 can be prevented, so that a high vacuum and high definition image display device can be obtained.

  Further, the use area of the effective display area 5 can be widened by arranging the positioning pieces 12B in a scattered manner. Furthermore, since the positioning piece 12B can be used as a positioning guide for the support 3, the positioning accuracy can be improved and the manufacturing process can be made more efficient.

  FIG. 8 is a diagram showing an overall configuration for explaining still another embodiment of the image display apparatus of the present invention. FIG. 8 (a) is a partially broken plan view, and FIG. 8 (b) is FIG. It is sectional drawing cut | disconnected along the AA of a), The same code | symbol is attached | subjected to the same part as the figure mentioned above, and the description is abbreviate | omitted. 8 is different from FIG. 6 in that the positioning pieces 12B are scattered in the central portion of each inner wall in the same plane as the support 3.

  With the configuration of the third embodiment, even when the support 3 is deformed in the inner (center side) direction during high temperature processing, the positioning piece 12B can prevent the deformation. Therefore, the assembly accuracy of the panel is improved, and a stable quality panel can be manufactured.

  In general, it is extremely important for the panel that the back substrate, the entire substrate, the support and the spacer are securely bonded. An adhesive layer of a sealing member such as a frit glass paste is formed on the joint surface, but it is necessary to apply a load evenly during sealing. The means includes a panel internal / external differential pressure system and an overlapping system. When considering the uniform load, the former is advantageous, but there is a problem in the deformation of the support. Deformation due to differential pressure is almost determined by the relationship between the Young's modulus of the support and the differential pressure inside and outside the panel, but in order to make the connection more reliable, the larger the differential pressure, Good. Although the correspondence is possible by the width of the support, the area outside the effective display area increases, which is not preferable.

In the configuration of the third embodiment, since the positioning pieces 12B are disposed in the central portion of each inner wall in the same plane as the support body 3, the width of the support body 3 is determined by the sealing property. Therefore, it is possible to cope with the increase in the size of the panel with the mounting pitch (number) of the positioning pieces 12B. That is, since it is not necessary to increase the width of the support 3 and it can be formed thin, a sufficiently large effective display area 5 can be secured to cope with an increase in the size of the panel.
The

  FIG. 9 is a diagram showing an overall configuration for explaining another embodiment of the image display device of the present invention. FIG. 9A is a partially broken plan view, and FIG. 9B is FIG. ) Is a cross-sectional view taken along the line A-A of FIG. 9 differs from FIG. 8 in that, in addition to the configuration in which positioning pieces 12B are arranged in the center of each inner wall in the same plane as the support 3, the corners are adjacent to the outer wall surface of each corner. Thus, a substantially L-shaped positioning piece 12A is provided.

  In the configuration of the fourth embodiment, the positioning piece 12A is suppressed even if the support 3 is deformed in the inner (center side) direction and the outer direction during high temperature processing by suppressing the support 3 from the two directions (both wall surfaces). , 12B can reliably prevent the deformation, so that the assembly accuracy of the panel is greatly improved, and a more stable high-quality panel can be manufactured.

  In the above-described embodiment, the case where the substantially L-shaped positioning piece 12A is disposed adjacent to the outer wall surface of each corner portion of the support 3 has been described. Needless to say, the same effect as described above can be obtained even in the configuration disposed adjacent to.

  In the above-described embodiment, the case where the positioning piece 12B as a substantially prismatic receiving piece is disposed adjacent to each inner wall surface in the same plane as the support 3 has been described. It goes without saying that substantially the same effect as described above can be obtained even in the configuration arranged adjacent to the wall surface.

  In the above-described embodiment, the positioning pieces 12A and 12B are substantially L-shaped and prismatic. However, the present invention is not limited to this, and various shapes can be used.

  In the above-described embodiment, the case where the positioning pieces 12A and 12B are disposed on the phosphor surface forming surface side of the front substrate 2 has been described. Needless to say, the same effects can be obtained.

  Further, in the above-described embodiments, the case where the frame body structure integrally formed in the frame shape is used as the support has been described. However, the frame body is configured by joining thin frame bodies over a plurality of layers. The structure may be used, or a frame structure constructed by combining a plurality of divided support pieces and joining the corners to each other may be used. A frame structure constituted by combining the two short side support pieces facing each other and joining the respective corners to each other may be used.

  As described above, by disposing the positioning pieces 12A and 12B that can regulate the deformation of the support body 3 adjacent to the frame-shaped support body 3, the sealing shift and the leak failure due to the deformation of the support body 3 are arranged. And the like, and a high-vacuum, high-definition image display device can be obtained. Further, the positioning pieces 12A and 12B can be used as positioning guides for the support 3, and excellent effects such as improvement in positioning accuracy and efficiency in the manufacturing process can be obtained.

1A and 1B are schematic diagrams illustrating a schematic configuration of an embodiment of an image display device according to the present invention, in which FIG. 1A is a plan view viewed from the front substrate side, and FIG. 1B is a direction of arrow A in FIG. It is the top view seen from. It is a principal part expanded sectional view of Fig.1 (a). It is the model expanded sectional view cut | disconnected along the BB line of Fig.1 (a). It is an expansion perspective view which shows the structure of the positioning piece concerning the image display apparatus of this invention. It is a figure which shows the structure by one Example of the image display apparatus of this invention, Fig.5 (a) is a partially broken top view, FIG.5 (b) cut | disconnected along the AA line of Fig.5 (a) FIG. It is a figure which shows the structure by the other Example of the image display apparatus of this invention, Fig.6 (a) is a partially broken top view, FIG.6 (b) follows the AA line of Fig.6 (a). It is sectional drawing cut | disconnected. It is an expansion perspective view which shows the structure of the deformation | transformation prevention receiving top concerning the image display apparatus of this invention. It is a figure which shows the structure by the other Example of the image display apparatus of this invention, Fig.8 (a) is a partially broken top view, FIG.8 (b) follows the AA line of Fig.8 (a). It is sectional drawing cut | disconnected. It is a figure which shows the structure by the other Example of the image display apparatus of this invention, Fig.9 (a) is a partially broken top view, FIG.9 (b) follows the AA line of Fig.9 (a). It is sectional drawing cut | disconnected. It is a principal part top view which shows the deformation | transformation state of a support body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Back substrate, 2 ... Front substrate, 3 ... Support body, 4 ... Sealing member, 4a ... Sealing member, 5 ... Effective display area, 6 ... Image Signal wiring, 7 ... Scanning signal wiring, 8 ... Interval holding member (spacer), 9 ... Adhesive member, 10 ... BM film, 11 ... Anode electrode, 12A ... Positioning piece, 12a: Reservation groove, 12B: Positioning piece for preventing deformation, 12b: Retention groove, HL: Through hole, EXC: Exhaust pipe.

Claims (12)

A front substrate having an anode and a phosphor on its inner surface;
A back substrate having an electron source on the inner surface and facing the front substrate at a predetermined interval;
A plurality of spacing members arranged and fixed in a display area between the front substrate and the rear substrate;
A support body that is inserted around the display area between the front substrate and the rear substrate, and holds the predetermined distance;
With
An image display device formed by hermetically sealing the end surface of the support and the front substrate and the rear substrate via sealing members,
An image display apparatus comprising a positioning piece adjacent to a corner of the support. A front substrate having an anode and a phosphor on its inner surface;
A back substrate having an electron source on the inner surface and facing the front substrate at a predetermined interval;
A plurality of spacing members arranged and fixed in a display area between the front substrate and the rear substrate;
A support body that is inserted around the display area between the front substrate and the rear substrate, and holds the predetermined distance;
With
An image display device formed by hermetically sealing the end surface of the support and the front substrate and the rear substrate via sealing members,
An image display device, wherein positioning frames are disposed adjacent to corners and sides of the support.   The back substrate extends in one direction and is arranged in parallel in another direction orthogonal to the one direction, and a plurality of scanning signal lines to which a scanning signal is sequentially applied in the other direction, and extends in the other direction and the A plurality of image signal wirings arranged in parallel in the one direction so as to intersect the scanning signal wiring; an electron source provided at each intersection of the scanning signal wiring and the image signal wiring; and the scanning signal wiring. The image display apparatus according to claim 1, further comprising a power supply electrode that supplies current to the electron source.   The image display device according to claim 1, wherein the positioning piece has a substantially L shape.   4. The image display device according to claim 1, wherein the positioning piece is bonded and disposed within the same plane as the support and adjacent to an outer wall of a corner portion of the support. 5.   4. The image display device according to claim 1, wherein the positioning piece is disposed in the same plane as the support and adjacent to an inner wall of a corner portion of the support. 5.   4. The image display device according to claim 2, wherein the positioning piece is disposed in the same plane as the support body and adjacent to an inner wall of a side portion of the support body.   4. The image display device according to claim 2, wherein the positioning piece is disposed in the same plane as the support and adjacent to the outer wall of the side of the support. 5.   9. The positioning frame according to claim 1, further comprising a retaining groove for the sealing member along a length direction at a corner portion where the front substrate and the wall surface of the support are joined. An image display device according to claim 1.   The image display device according to claim 1, wherein the positioning piece is made of an insulating material.   10. The positioning piece according to claim 1, wherein the positioning piece is made of an insulating material having a higher softening point than the sealing member or an insulating material bonded with an adhesive having a higher softening point. The image display device described.   The image display device according to claim 1, wherein a height of the positioning piece is lower than that of the support.

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