CA1228113A - Flat picture display device - Google Patents
Flat picture display deviceInfo
- Publication number
- CA1228113A CA1228113A CA000497116A CA497116A CA1228113A CA 1228113 A CA1228113 A CA 1228113A CA 000497116 A CA000497116 A CA 000497116A CA 497116 A CA497116 A CA 497116A CA 1228113 A CA1228113 A CA 1228113A
- Authority
- CA
- Canada
- Prior art keywords
- corrugations
- trough
- display device
- picture display
- terized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/861—Vessels or containers characterised by the form or the structure thereof
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
W.Bernhard-M.Schlipf-K.M.Tischer 3-1-35 Abstract of the Disclosure Flat Picture Display Device The flat picture display device consists of a phosphor screen (9) of glass, of a metallic trough (1) and of a plate-shaped (sandwiched) control structure (8) there-between. On the inside of the phosphor screen (9) there is provided a layer of phosphor (15), and inside the trough (1) there is disposed an areal cathode (7). Corrugations (16) are provided for in the bottom part (4) of the trough (1) and reinforcing (stiffen-ing) ribs (19) are provided for in the side walls (2) of the trough (1).
(Fig.1)
(Fig.1)
Description
The invention relates to a flat picture display device.
From the article "Don flush Fernsehbildschirm" as published in the technical journal "Phonics" 1980, No. 10, pp. 63 to 66, Figure 2, there is known a flat picture display device with a display screen of glass on the front side, which carries a phosphor layer on its inside, a metallic trough with an outwardly curved bottom, and with an edging flange as the rear side in which an creel cathode is disposed, and with a plate-shaped control struck lure between the cathode and the phosphor layer. This device come proses on its inside a phosphor-coated front panel of glass, a digitally addressable control structure for forming and modulating the electron stream, an creel cathode sending a uniform stream of electrons in direction toward the control structure, and a metal back case for effecting the vacuum sealing of the entire assembly.
The metal back case comprises an edging flange on which the mar-Gina area of the front panel rests. The bottom of the metal case is curved outwardly with the electric lead-in conductors -to the creel cathode being lead there through.
It is the object of the invention to improve a picture display device of the type mentioned herein before, in such a way that its metallic trough is small, of light weight and yet stable.
The invention provides a flat picture display device with a display screen of glass on the front side, which carries a phosphor layer on its inside, a metallic trough with an outwardly curved bottom, and with an edging flange as the rear side in which an creel cathode is disposed, and with a plate-shaped control structure between the cathode and the phosphor layer, characterized in that ~L2;2~ 3
From the article "Don flush Fernsehbildschirm" as published in the technical journal "Phonics" 1980, No. 10, pp. 63 to 66, Figure 2, there is known a flat picture display device with a display screen of glass on the front side, which carries a phosphor layer on its inside, a metallic trough with an outwardly curved bottom, and with an edging flange as the rear side in which an creel cathode is disposed, and with a plate-shaped control struck lure between the cathode and the phosphor layer. This device come proses on its inside a phosphor-coated front panel of glass, a digitally addressable control structure for forming and modulating the electron stream, an creel cathode sending a uniform stream of electrons in direction toward the control structure, and a metal back case for effecting the vacuum sealing of the entire assembly.
The metal back case comprises an edging flange on which the mar-Gina area of the front panel rests. The bottom of the metal case is curved outwardly with the electric lead-in conductors -to the creel cathode being lead there through.
It is the object of the invention to improve a picture display device of the type mentioned herein before, in such a way that its metallic trough is small, of light weight and yet stable.
The invention provides a flat picture display device with a display screen of glass on the front side, which carries a phosphor layer on its inside, a metallic trough with an outwardly curved bottom, and with an edging flange as the rear side in which an creel cathode is disposed, and with a plate-shaped control structure between the cathode and the phosphor layer, characterized in that ~L2;2~ 3
- 2 - S175-67 corrugations are provided for in the bottom of the metallic trough, and that reinforcing ribs are provided for in the side walls.
The invention will now be explained in greater detail with reference to examples of embodiments shown in Figures 1 to 5 of the accompanying drawings, in which:
Figure 1 is a sectional view taken through a schematically shown picture display device, Figure 2 shows the metallic trough from below, Figure 3 is a sectional view of the trough taken on line III-III of Figure 2, Figure 4 is a sectional view of the trough taken on line IV-IV of Figure 2, and Figure 5 is a sectional view of a further type of embodiment of a trough merely shown schematically.
The picture display device which is shown on a reduced scale in Figure 1 comprises a metallic flat trough 1, the side walls 2 of which ending up in an edging flange 3. In the bottom of the trough 1 there are provided grommets 5 for the electric lead-in conductors 6 of -the quasi really acting cathode 7. The cathode, for example, is designed as a therm ionic cathode of which only one filament is shown. The trough 1, for example, may consist of a nickel-iron alloy which preferably has an expansion which is adapted to that of the glass parts to be used for the later vacuum vessel.
The space enclosed by the trough 1 is terminated by a plate-shaped control structure 8 whose marginal range rests on the flange 3 of the trough 1. This control j:..
"
~L2~8~L3 W.Bernhard-M.Schlipf-K~M.Tischer 3-1-35 structure has for its object to form the stream of electrons as produced by the cathode, into individual electron beams, and to modulate them in accordance with the picture contents of the individual associated picture element. Such -types of control structures are known per so and, therefore, are not described in greater detail he r eon.
The trough-shapedly designed glass panel type of display screen 9 rests with its edge I on the micro sheet sand-wick type of control structure 8 and, consequently, on -the flange (lip) of the trough 1. The connection between the flange 3, the marginal range of the control structure 8 and the edge or rim portion 10 of the display screen 9 is established with the aid of a (not shown) solder glass (fruit), so that a completely closed space results. before the picture display device is waken into operation, this space is evacuated. The inner surface 11 of the display screen 9 is plane, and on it -there is deposited the layer o-f phosphor 15. The outer surface 1Z
of the display screen is slightly curved outwardly. Preferably, the display screen 9 is made from pressed or mounded glass. Relative thereto, i-t is important for the glass of the display screen 9 and the metal of the trough 1 to have the same thermal expansion coefficients To the side walls 13 of the display screen 9 there is apt plied an implosion protection. This implosion protection consists of a metallic band or strap 14.
Instead of the trough-shapedly designed display screen 9 also a flat glass plate with a layer of phosphor applied to its inside, may be placed on to the control structure via a spacing element.
, ~L228~L~3 I.
W.Bernhard-M~Schlipf-K.M.Tischer 3-1-35 In the slightly outwardly curved bottom 4 of the metallic trough 1 there are provided corrugations aye and 16b. The outer corrugations aye lying nearer to-ward the side walls 2 of the trough 1, are pressed into the trough, and the other corrugations 16b are pressed outwardly. Owing to these corrugations 16, -the trough 1 is given a very good rigidity by employing the smallest possible amount of material. In the bottom surfaces of the corrugations aye there are provided holes 18 (see Fugue) for taking up the grommets 5 for -the electric lead-in conductors 6. The bottom surfaces 17 of the corrugations aye extend in a plane which is indicated by dash lines and which, itself, extends in parallel with a plane de-termined by the flange 3 In this way it is achieved that all filaments of the cathode 7 come to lie in one plane and produce a uniform stream of electrons. The side walls 2 of the trough 1 form a small angle with a Line which is perpendicular to the plane determined by the flange 3.
This means to imply that the trough, within the area of its flange 3, has a larger width than within the area of its bottom 4. In the side walls 2 there are provided no-informing ribs 19. These reinforcing ribs 19 are per pen-declare to -the plane formed by the flange 3. This means to imply that near the bottom 4 of the trough 1 they are pressed further out of the side walls 2 than in the proximity of the flange 3.
From the bottom view onto the metallic trough 1 as shown in Fugues, it can be seen that the side walls 2 are slightly curved toward the outside so that the flange 3, within the respective center area, is narrower than in the corner areas. In this particular example o-f embodiment all corrugations aye and 16b extend in parallel with the narrower side of the .
Lowe W.Bernhard-M.Schlipf-K.M.Tischer 3-1-35 trudge 1. The ends of the corrugations aye and 16b are rounded in order thus to provide a continuous transition to the bottom 4 of the trough 1. The reinforcing ribs 19 are clearly recognizable as bulging.
Fugue is a sectional view taken on line III-III of Fugue.
It can be seen that the bottom surface 17 of the eon-rugation aye extends in parallel with the plane as deter-mined by the flange 3. The corrugations 16b are curved outwardly similar as the bottom 4 of the trough 1. From Fugue it can be seen that six holes 18 are provided for in the corrugation aye for taking up the grommets for the electric cathode lead-in conductors. According to -the respective requirements, there may also be chosen any other number of holes and, consequently, of grommets.
Fugue is a sectional view taken on line IV-IV of Fugue.
The plane as determined by the bottom surfaces 17 of the corrugations aye is indicated by a dot-and-dash line, and it can be seen that it extends in parallel with the plane as determined by the flange 3. The depths of the Corey-gallons aye are shown in Fugue only by way of example. The depths of the reinforcing ribs 19 result from the inkwell-nation of the side walls 2 in relation to the vertical line-In the bottom part 4 of the metallic trough 1, the center corrugations can not only be pressed toward the outside, but also toward the inside. One such example of embodiment is shown in Fugue in a partly sectional view of a trough in a merely schematically representation. In this example of embodiment, the corrugations 16b extend parallel in relation to the longer side of the trough. In this way _~_ I
W.Bernhard-M.Schlipf-K.M.Tischer 3-1-35 it becomes possible for the corrugations 16b to be used simultaneously as field former for the stream of electrons to be produced by the cathode 7. Between the side wall 2 of the trough and the first filament of the cathode 7, which are likewise only shown schematically, there us provided an angular member 20. This angular member 20 likewise serves as a field former which, by its part 2Z
as connected to the bottom 4 of the trough, e.g., by means of the weld spots 21, simultaneously acts toward a stiffen-in of the trough.
The stiffening or reinforcing ribs 19 may include (not shown) getters.
The described flat picture display device is equally well suitable for a black-and-white as well as for a colored display of pictures or characters.
The invention will now be explained in greater detail with reference to examples of embodiments shown in Figures 1 to 5 of the accompanying drawings, in which:
Figure 1 is a sectional view taken through a schematically shown picture display device, Figure 2 shows the metallic trough from below, Figure 3 is a sectional view of the trough taken on line III-III of Figure 2, Figure 4 is a sectional view of the trough taken on line IV-IV of Figure 2, and Figure 5 is a sectional view of a further type of embodiment of a trough merely shown schematically.
The picture display device which is shown on a reduced scale in Figure 1 comprises a metallic flat trough 1, the side walls 2 of which ending up in an edging flange 3. In the bottom of the trough 1 there are provided grommets 5 for the electric lead-in conductors 6 of -the quasi really acting cathode 7. The cathode, for example, is designed as a therm ionic cathode of which only one filament is shown. The trough 1, for example, may consist of a nickel-iron alloy which preferably has an expansion which is adapted to that of the glass parts to be used for the later vacuum vessel.
The space enclosed by the trough 1 is terminated by a plate-shaped control structure 8 whose marginal range rests on the flange 3 of the trough 1. This control j:..
"
~L2~8~L3 W.Bernhard-M.Schlipf-K~M.Tischer 3-1-35 structure has for its object to form the stream of electrons as produced by the cathode, into individual electron beams, and to modulate them in accordance with the picture contents of the individual associated picture element. Such -types of control structures are known per so and, therefore, are not described in greater detail he r eon.
The trough-shapedly designed glass panel type of display screen 9 rests with its edge I on the micro sheet sand-wick type of control structure 8 and, consequently, on -the flange (lip) of the trough 1. The connection between the flange 3, the marginal range of the control structure 8 and the edge or rim portion 10 of the display screen 9 is established with the aid of a (not shown) solder glass (fruit), so that a completely closed space results. before the picture display device is waken into operation, this space is evacuated. The inner surface 11 of the display screen 9 is plane, and on it -there is deposited the layer o-f phosphor 15. The outer surface 1Z
of the display screen is slightly curved outwardly. Preferably, the display screen 9 is made from pressed or mounded glass. Relative thereto, i-t is important for the glass of the display screen 9 and the metal of the trough 1 to have the same thermal expansion coefficients To the side walls 13 of the display screen 9 there is apt plied an implosion protection. This implosion protection consists of a metallic band or strap 14.
Instead of the trough-shapedly designed display screen 9 also a flat glass plate with a layer of phosphor applied to its inside, may be placed on to the control structure via a spacing element.
, ~L228~L~3 I.
W.Bernhard-M~Schlipf-K.M.Tischer 3-1-35 In the slightly outwardly curved bottom 4 of the metallic trough 1 there are provided corrugations aye and 16b. The outer corrugations aye lying nearer to-ward the side walls 2 of the trough 1, are pressed into the trough, and the other corrugations 16b are pressed outwardly. Owing to these corrugations 16, -the trough 1 is given a very good rigidity by employing the smallest possible amount of material. In the bottom surfaces of the corrugations aye there are provided holes 18 (see Fugue) for taking up the grommets 5 for -the electric lead-in conductors 6. The bottom surfaces 17 of the corrugations aye extend in a plane which is indicated by dash lines and which, itself, extends in parallel with a plane de-termined by the flange 3 In this way it is achieved that all filaments of the cathode 7 come to lie in one plane and produce a uniform stream of electrons. The side walls 2 of the trough 1 form a small angle with a Line which is perpendicular to the plane determined by the flange 3.
This means to imply that the trough, within the area of its flange 3, has a larger width than within the area of its bottom 4. In the side walls 2 there are provided no-informing ribs 19. These reinforcing ribs 19 are per pen-declare to -the plane formed by the flange 3. This means to imply that near the bottom 4 of the trough 1 they are pressed further out of the side walls 2 than in the proximity of the flange 3.
From the bottom view onto the metallic trough 1 as shown in Fugues, it can be seen that the side walls 2 are slightly curved toward the outside so that the flange 3, within the respective center area, is narrower than in the corner areas. In this particular example o-f embodiment all corrugations aye and 16b extend in parallel with the narrower side of the .
Lowe W.Bernhard-M.Schlipf-K.M.Tischer 3-1-35 trudge 1. The ends of the corrugations aye and 16b are rounded in order thus to provide a continuous transition to the bottom 4 of the trough 1. The reinforcing ribs 19 are clearly recognizable as bulging.
Fugue is a sectional view taken on line III-III of Fugue.
It can be seen that the bottom surface 17 of the eon-rugation aye extends in parallel with the plane as deter-mined by the flange 3. The corrugations 16b are curved outwardly similar as the bottom 4 of the trough 1. From Fugue it can be seen that six holes 18 are provided for in the corrugation aye for taking up the grommets for the electric cathode lead-in conductors. According to -the respective requirements, there may also be chosen any other number of holes and, consequently, of grommets.
Fugue is a sectional view taken on line IV-IV of Fugue.
The plane as determined by the bottom surfaces 17 of the corrugations aye is indicated by a dot-and-dash line, and it can be seen that it extends in parallel with the plane as determined by the flange 3. The depths of the Corey-gallons aye are shown in Fugue only by way of example. The depths of the reinforcing ribs 19 result from the inkwell-nation of the side walls 2 in relation to the vertical line-In the bottom part 4 of the metallic trough 1, the center corrugations can not only be pressed toward the outside, but also toward the inside. One such example of embodiment is shown in Fugue in a partly sectional view of a trough in a merely schematically representation. In this example of embodiment, the corrugations 16b extend parallel in relation to the longer side of the trough. In this way _~_ I
W.Bernhard-M.Schlipf-K.M.Tischer 3-1-35 it becomes possible for the corrugations 16b to be used simultaneously as field former for the stream of electrons to be produced by the cathode 7. Between the side wall 2 of the trough and the first filament of the cathode 7, which are likewise only shown schematically, there us provided an angular member 20. This angular member 20 likewise serves as a field former which, by its part 2Z
as connected to the bottom 4 of the trough, e.g., by means of the weld spots 21, simultaneously acts toward a stiffen-in of the trough.
The stiffening or reinforcing ribs 19 may include (not shown) getters.
The described flat picture display device is equally well suitable for a black-and-white as well as for a colored display of pictures or characters.
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Flat picture display device with a display screen of glass on the front side, which carries a phosphor layer on its inside, a metallic trough with an outwardly curved bottom, and with an edging flange as the rear side in which an areal cathode is dis-posed, and with a plate-shaped control structure between the cathode and the phosphor layer, characterized in that corrugations are provided for in the bottom of the metallic trough, and that reinforcing ribs are provided for in the side walls.
2. A picture display device as claimed in claim 1, charac-terized in that the corrugations extend parallel in relation to the narrower side of the trough, that the center corrugations are pressed outwardly, and that the outer corrugations as neighboring the side wall, are pressed inwardly.
3. A picture display device as claimed in claim 2, charac-terized in that in the outer corrugations there are provided holes for taking up the grommets for the electric lead-in conductors of the cathode, and that the bottom surfaces of the corrugations as pressed into the trough extend in one plane parallel to the plane determined by the flange.
4. A picture display device as claimed in claim 1, charac-terized in that the corrugations in the center part of the bottom extend in parallel with the broader side, that the corrugations adjacent to the neighboring side walls extend in parallel with the narrower side of the trough, and that all corrugations, are pressed inwardly.
5. A picture display device as claimed in claim 4, charac-terized in that the corrugations in the center part of the bottom represent field formers for the areal cathode.
6. A picture display device as claimed in claim 1, charac-terized in that the side walls of the trough form a small angle with a line perpendicular to the plane determined by the flange, and that they additionally are curved outwardly.
7. A picture display device as claimed in claim 1 or 6, characterized in that the reinforcing ribs are pressed outwardly and extend perpendicularly in relation to the plane as determined by the flange.
8. A picture display device as claimed in claim 1, charac-terized in that inside the reinforcing ribs there is disposed a material serving as a getter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3445629.5 | 1984-12-14 | ||
| DE19843445629 DE3445629A1 (en) | 1984-12-14 | 1984-12-14 | FLAT IMAGE DISPLAY DEVICE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1228113A true CA1228113A (en) | 1987-10-13 |
Family
ID=6252772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000497116A Expired CA1228113A (en) | 1984-12-14 | 1985-12-06 | Flat picture display device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0184832A3 (en) |
| JP (1) | JPS61179043A (en) |
| CA (1) | CA1228113A (en) |
| DE (1) | DE3445629A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0722849Y2 (en) * | 1987-09-30 | 1995-05-24 | 双葉電子工業株式会社 | Fluorescent display |
| DE3911343A1 (en) * | 1989-04-07 | 1990-10-11 | Nokia Unterhaltungselektronik | FLAT DISPLAY DEVICE |
| US5256937A (en) * | 1989-04-07 | 1993-10-26 | Nokia (Deutschland) Gmbh | Flat panel fluorescent screen display tube |
| JP2950043B2 (en) * | 1992-10-02 | 1999-09-20 | 三菱電機株式会社 | Thin vacuum vessel and method of manufacturing the same |
| JP3424358B2 (en) * | 1994-12-06 | 2003-07-07 | 三菱電機株式会社 | Flat panel image display |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE532722A (en) * | 1953-10-23 | |||
| US2969162A (en) * | 1957-04-22 | 1961-01-24 | Kimble Glass Co | Molded picture tube |
| US3297188A (en) * | 1964-05-14 | 1967-01-10 | William R Aiken | Envelope for cathode ray tubes |
| US3882355A (en) * | 1972-12-29 | 1975-05-06 | Ibm | Flat screen display device using controlled cold cathodes |
| US3917968A (en) * | 1974-02-22 | 1975-11-04 | Texas Instruments Inc | Area flood gun |
| DE2831962C3 (en) * | 1978-07-20 | 1981-02-26 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Cathode for a gas discharge indicator tube |
| US4387332A (en) * | 1980-01-29 | 1983-06-07 | Sanyo Electric Co., Ltd. | Apparatus for successively charging rechargeable batteries |
| JPS6158146A (en) * | 1984-08-30 | 1986-03-25 | Matsushita Electric Ind Co Ltd | Container of flat surface type vacuum display tube |
-
1984
- 1984-12-14 DE DE19843445629 patent/DE3445629A1/en not_active Ceased
-
1985
- 1985-12-06 CA CA000497116A patent/CA1228113A/en not_active Expired
- 1985-12-10 JP JP27616385A patent/JPS61179043A/en active Pending
- 1985-12-11 EP EP85115767A patent/EP0184832A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61179043A (en) | 1986-08-11 |
| DE3445629A1 (en) | 1986-06-19 |
| EP0184832A3 (en) | 1988-04-20 |
| EP0184832A2 (en) | 1986-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |