CA1076236A - Display device - Google Patents

Abstract

ABSTRACT
A display device comprising in combination: a digit composed of a plurality of segments: at least a part of the segments being stacked and superimposed each other.

Description

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This invention relates to a display device, and especially relates to a new device for clearly displaying ~he days of the week without numerals.
In a conventional device one digit is composed of seven segments or more. Character or numerals are displayed by employing a plurality of digits composed of the segments. However, in this sytem, the segments are disposed on the same plane whereby the displayed characters and numerals are unnatural and the display has mechanical failings.
As a means for eliminating above no~ed difficulty and insufficiency, the prior improvement consists of a plurality of electrode plates having printed electrode numerals are selectively operated to respectively display numerals. However, in this syte~, numerals and characters are naturally displayed, but, each digit is composed of one segment whereby it is impossible to commonly use other segments for other digits. It is ~herefore necessary to provide a stacked type display device having a lot of electrode plates. It is very inconvenient to emplby this improved device in a small si~e electronic watch.
This invention aims to eliminate the above noted difficulty and insufficiency, the object of the present invention being to provide a display device having a plurality of electrode plates stacked and ~0 superimposed. Furthermore there is provided a plurality of segments disposed respectively to the electrode plates.
The display device of the present invention will now be described with reference to the accompanying drawings in which:
Figs. 1 and 2 show the construction of a conventional display device, Fig. 3 shows the cross sectional view of the display device of the present invention, Fig. 4 shows the display construction of the display device in Fig. 3, Fig. 5 shows other embodiment of the display constructlon of the present invention.

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Referring to the drawings, Figs.l and 2 show the conventional system wherein one digit is composed of seven segments or more. Thi~ 1 discussed as prior art at the beginning of the disclosure.
In Fig. 3, an upper polarizing plate 1 is mounted on a first electrode plate, 2, and a first electrode group 3 is shaped to an under portion of the first electrode plate 2.
Furth~r~ a second electrode plate 6 having a second electrode group 5 thereon is mounted to an under portion of first electrode group 3 via a transparent insulated layer 4. A third electrode plate 8 having a common electrode 7 thereon is mounted to an under portion of the second elec~rode plate 6 and a liquid crystal 9 is inserted between the second and third electrode plates 6 and ~. A lower polarizing plate 10 and reflecting plate 11 are stacked under the third electrode plate 8.
Referring now to the displayed condition of M, N, O and T by one digit:
As indicated in Fig. 4, ~he segments a, b, c, E, g and h are printed on first electrode plate 2, and further other segments e and d are printed on second electrode plate 6. In the noted construction, when first electrode plate 2 and second electrode plate 6 are stacked, segments b and d, b and e, e and g, and g and f are respectively stacked and superimposed. However insulated layer 4 is mounted between first and second electrode plates 2 and 6 whereby an electrical short is prevented, the display belng by the cooperation of the common electrodes.
The display "M" is by the segments a, b, c and h. The display "T"
~ is by the segments d and e. This di~play "O" is by the segments a, d, ; c and g. The display "N" is by the segments a, b, f and c.
Reerring now to the detailed dlsplays SUN, MON, TUE, WED, T~U, FRI and SAT: It is necessary to employ first, seco=d and third electrode plates 20, 21 and 22. Each segment 25 as indicated in Fig. 5 ia ;~
respectively printed on elec~rode plates ZO, 21 and 22 whereby it is possibIe to selectively operate and to display each segmen~ by the cooperation of the common electrode plate (not shown) after superimpos~ng ~ ' , ', ~76i2 36 electrode plates upon each other. Numeral 30 shows the stacked segments after electrode plates 20, 21 and 22 are superimposed on each other.
According to the display device of the present invention, it is possible to display the numerals and characters in a natural form by superimposing a few electrode plates. In the embodiment of the present invention characters are displayed, however it is possible to display numerals and characters by the same one digit.

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Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. An electronic display device comprising in combination:
at least three stacked transparent electrode plates which are electrically insulated from each other, a plurality of electrode segments which are disposed on said plates, said segments being capable of being rendered optically visable by an electrical signal applied to said device, said plurality including pluralities of vertical line shaped segments, horizontal line shaped segments and inclined line shaped segments, which pluralities are respectively disposed on different ones of said plates, whereby a display of a day of a week may be selectively displayed.