Display device

Claim 2

A display device comprising: first numerical display means; second numerical display means disposed in parallel with said first numerical display means; and an enclosure having a window plate for enclosing said first and second numerical display means under said window plate, said window plate including a projection which extends downwardly along a border between said first and second numerical display means to prevent said first and second numerical display means from interfering with each other.

Claim 3

A display device in accordance with claim 1, further comprising a transparent electrode disposed upon said projection for electrostatically shielding said first and second numerical display means from each other.

Claim 4

A display device in accordance with claim 1, wherein said projection partitions the interior of said enclosure into at least two parts.

Claim 5

A display device in accordance with claim 1, wherein said window plate is provided with a recess on the outer surface thereof along the border between said first and second numerical display means, said display device further comprising a conductor disposed in said recess for preventing said first and second numerical display means from interfering with each other.

Claim 6

A display device in accordance with claim 1, wherein each of said numerical display means includes a group of parallel display units.

Claim 7

A display device comprising: first numerical display means; second numerical display means disposed in parallel with said first numerical display means; and an enclosure having a window plate for enclosing said first and second numerical display means under said window plate, said window plate including a projection, formed of the same material as said window plate, which extends downwardly along a border between said first and second numerical display means to prevent said first and second numerical display means from interfering with each other.

Claim 8

A display device comprising: first numerical display means; second numerical display means disposed in parallel with said first numerical display means; and an enclosure having a window plate for enclosing said first and second numerical display means under said window plate, said window plate including a projection, formed of the same material as said window plate, which extends downwardly along a border between said first and second numerical display means to prevent said first and second numerical display means from interfering with each other.

Claim 9

A display device in accordance with claim 6, further comprising a transparent electrode disposed upon said projection for electrostatically shielding said first and second numerical display means from each other.

Claim 10

A display device in accordance with claim 6, wherein said projection partitions the interior of said enclosure into at least two parts.

Claim 11

A display device in accordance with claim 6, wherein said window plate is provided with a recess on the outer surface thereof along the border between said first and second numerical display means, said display device further comprising a conductor disposed in said recess for preventing said first and second numerical display means from interfering with each other.

Claim 12

A display device in accordance with claim 6, wherein each of said numerical display means includes a group of parallel display units.

Claim 13

A display device comprising: an enclosure having a viewing window; first groups of display electrodes arranged side by side along said viewing window to form side-by-side character positions; first grid electrodes disposed to face said respective first groups of display electrodes; a first cathode disposed over said first grid electrodes; second groups of display electrodes arranged in parallel with said first groups of display electrodes and side-by-side along said viewing window to form side-by-side character positions; second grid electrodes disposed to face said respective second groups of display electrodes; a second cathode disposed over said second grid electrodes; means for applying signals for selection of the display electrodes of said first and second groups of display electrodes; means for selectively driving said first and second grid electrodes; and means for alternatively driving either one of said first and second cathodes.

Claim 14

A display device comprising: an enclosure having a viewing window; first groups of display electrodes arranged side by side along said viewing window to form side-by-side character positions; first grid electrodes disposed to face said respective first groups of display electrodes; a first cathode disposed over said first grid electrodes; second groups of display electrodes arranged in parallel with said first groups of display electrodes and side-by-side along said viewing window to form side-by-side character positions; second grid electrodes disposed to face said respective second groups of display electrodes; a second cathode disposed over said second grid electrodes; means for applying signals for selection of the display electrodes of said first and second groups of display electrodes; means for selectively driving said first and second grid electrodes; and means for alternatively driving either one of said first and second cathodes.

Claim 15

A display device in accordance with claim 11, wherein said first and second cathodes are disposed parallel with each other and each has two end portions, and wherein the corresponding end portions of each cathode are cross-connected to the opposite end portions of the other cathode.

Claim 16

A display device in accordance with claim 11, wherein said viewing window includes a projection extending downwardly between said first and second groups of display electrodes.

Claim 17

A display device in accordance with claim 13, wherein said projection comprises a transparent electrode for electrostatically shielding said first and second groups of display electrodes from each other.

Claim 18

A display device in accordance with claim 11, wherein the spacing of said first groups of display electrodes with respect to said first cathode is different between said first groups of display electrodes.

Claim 19

A display device comprising: an enclosure having a viewing window; first groups of display electrodes arranged side-by-side along said viewing window to form side-by-side character positions; first grid electrodes disposed facing said respective first groups of display electrodes; a first cathode disposed over said first grid electrodes; second groups of display electrodes arranged in parallel with said first groups of display electrodes and side-by-side along said viewing window to form side-by-side character positions; second grid electrodes disposed facing said respective second groups of display electrodes; a second cathode disposed over said second grid electrodes and connected to said first cathode; first selection means for applying signals for selection of the display electrodes of said first groups of display electrodes; second selection means for applying signals for selection of the display electrodes of said second groups of display electrodes; means for selectively driving said first and second grid electrodes; and means for selectively driving said first cathode.

Claim 20

A display device comprising: an enclosure having a viewing window; first groups of display electrodes arranged side-by-side along said viewing window to form side-by-side character positions; first grid electrodes disposed facing said respective first groups of display electrodes; a first cathode disposed over said first grid electrodes; second groups of display electrodes arranged in parallel with said first groups of display electrodes and side-by-side along said viewing window to form side-by-side character positions; second grid electrodes disposed facing said respective second groups of display electrodes; a second cathode disposed over said second grid electrodes and connected to said first cathode; first selection means for applying signals for selection of the display electrodes of said first groups of display electrodes; second selection means for applying signals for selection of the display electrodes of said second groups of display electrodes; means for selectively driving said first and second grid electrodes; and means for selectively driving said first cathode.

Claim 21

A display device in accordance with claim 16, wherein said viewing window includes a projection extending downwardly between said first and second groups of display electrodes.

Claim 22

A display device in accordance with claim 17, wherein said projection comprises a transparent electrode for electrostatically shielding said first and second groups of display electrodes from each other.

Claim 23

A display device in accordance with claim 16, wherein the spacing of said first groups of display electrodes with respect to said first cathode is different between said first groups of display electrodes.

Claim 24

A display device comprising: an enclosure having a viewing window; first groups of display electrodes arranged side-by-side along said viewing window to form side-by-side character positions; first grid electrodes disposed facing said respective first groups of display electrodes; a first cathode disposed over said first grid electrodes; second groups of display electrodes arranged in parallel with said first groups of display electrodes and side-by-side along said viewing window to form side-by-side character positions; second grid electrodes disposed facing said respective second groups of display electrodes; a second cathode connected to said first cathode and disposed over said second grid electrodes; means for applying signals for selection of the display electrodes to said first and second groups of display electrodes; first grid selection means for sequentially selecting said respective first grid electrodes; second grid selection means for sequentially selecting said respective second grid electrodes; and means for selectively driving said first cathode and said second cathode connected to said first cathode.

Claim 25

A display device comprising: an enclosure having a viewing window; first groups of display electrodes arranged side-by-side along said viewing window to form side-by-side character positions; first grid electrodes disposed facing said respective first groups of display electrodes; a first cathode disposed over said first grid electrodes; second groups of display electrodes arranged in parallel with said first groups of display electrodes and side-by-side along said viewing window to form side-by-side character positions; second grid electrodes disposed facing said respective second groups of display electrodes; a second cathode connected to said first cathode and disposed over said second grid electrodes; means for applying signals for selection of the display electrodes to said first and second groups of display electrodes; first grid selection means for sequentially selecting said respective first grid electrodes; second grid selection means for sequentially selecting said respective second grid electrodes; and means for selectively driving said first cathode and said second cathode connected to said first cathode.

Claim 26

A display device in accordance with claim 20, wherein said viewing window includes a projection extending downwardly between said first and second groups of display electrodes.

Claim 27

A display device in accordance with claim 21, wherein said projection comprises a transparent electrode for electrostatically shielding said first and second groups of display electrodes from each other.

Claim 28

A display device in accordance with claim 20, wherein the spacing of said first groups of display electrodes with respect to said first cathode is different between said first groups of display electrodes.