CA1089657A - Digital electronic timepiece with multiple display - Google Patents
Digital electronic timepiece with multiple displayInfo
- Publication number
- CA1089657A CA1089657A CA263,376A CA263376A CA1089657A CA 1089657 A CA1089657 A CA 1089657A CA 263376 A CA263376 A CA 263376A CA 1089657 A CA1089657 A CA 1089657A
- Authority
- CA
- Canada
- Prior art keywords
- polarizing plate
- liquid crystal
- partial
- type
- panel glass
- 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G9/00—Visual time or date indication means
- G04G9/0023—Visual time or date indication means by light valves in general
- G04G9/0029—Details
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G9/00—Visual time or date indication means
- G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08
- G04G9/0094—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08 using light valves, e.g. liquid crystals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electric Clocks (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A liquid crystal display device particularly for use in timepieces in which more than one type of information is to be displayed and in which information of one type is presented in a first primary appearance, whereas information of the second type appears in a colour different from the first appearance. The device includes a partial polarizing plate below the liquid crystal which is of a colour transmission different from the main polarizing plate which thus results in the different colour display when the liquid crystal above the partial polarizing plate is actuated.
A liquid crystal display device particularly for use in timepieces in which more than one type of information is to be displayed and in which information of one type is presented in a first primary appearance, whereas information of the second type appears in a colour different from the first appearance. The device includes a partial polarizing plate below the liquid crystal which is of a colour transmission different from the main polarizing plate which thus results in the different colour display when the liquid crystal above the partial polarizing plate is actuated.
Description
. ~ .
This invention relates to a liquid crystal display panel.
In conventional liquid crystal panels, actual time display occupies most of the display surface so that the current hour and minute - is prominent, while the subsidiary display of seconds, the month, and the : day or the date is shown on the more limited dead space. An identifying plate with an identifying print portion is thus required on an upper panel glass all of which detracts from full utilization of the display surface.
If the identifying plate is omitted, it is necessary to designate the information being displayed by produclng a letter or character through electrical operation of the llquid crystal. This results in the necessity for a larger and more complicated nesa electrode.
~ This disclosure meets the disadvantages, avoiding printing on the ; upper panel gla8s and simplifies the nesa electrode of the upper and lower panel glasses, while still providing a structure of a display panel with a prominent timepiece display function.
Specific embodiments of the invention will now be described having reference to the accompanying drawings in which;
Figure 1 is a plan view of a display panel"
Figure 2 is a side view of the panel of Figure 1 and, Figure 3 is a section along line A~A of Figure 1.
As seen in the drawings, an upper polarizing plate 1, lies over an ` upper panel glass 2 on the upper surface of which is provided a colon 11. ~ ` -A separator 3 spaces panel glass 2 from a lower panel glass 5 forming space 4 for receipt of a liquid crystal. On the lower surface of glass 2 are individual nesa electrodes (not illustrated) for the liquid crystal.
A common electrode (also a nesa electrode) is printed on the upper side ` of lower panel glass 5.
An input signal for the liquid crystal is fed between selected indi~idual electrodes on upper panel glass 2 and the common electrode on panel glass 5. A lower polarizing plate 7 is provided below glass 5 and a reflection plate 8 is mounted below plate 7.
. 1 .,~ . .
: A -1-.
.
. ,.. . ; . . .
~ . . .` , .
This structure so far described is known. However, it has been found that if part of the polarizing plate 7 is replaced, in the region where the different display such as month, day, seconds or the like is to be displayed, by a partial polarizing plate 6 of a different colour from the primary basic appearance or colour of the display caused by plate 7, a portion 9 will then appear (Fig. 1) in which the partial plate 6 gives rise to a colour different from the primary appearance or colour of the main actual time display. The main display may or may not be in any partic-ular colour,being normally black on an essentially colourless background or vice versa. Thus, when the liquid crystal electrically operates the subsidiary display, it appears characterized by a colour which is different from the primary appearance.
The action of the liquid crystal in con~unction with light passed by the polarizing plates 1, 6 and 7 may be either to prevent or to enable light transmission dependent upon the orientation of the polarizing planes -of the polarizing plates in known manner. Thus, the electrical operation of the liquid crystal will be to actuate the subsidiary display either in the colour of the plate 6 against a dark background, or to display n dark integers against a background in the colour of plate 6.
Thus, since month, day and seconds are displayed in accordance ;
with the colour of the partial polarizing plate, no identlfying print portion, or plate, or electrical letter display or the llke by the liquid crystal, are necessary. The arrangement thus enables the display surface to be used to the full. Clearly, there is a wide range of choice of colour for the partial polarizing plate 6 and if other identified displays are desired, more than one plate 6 may be included for more than one region to appear in the same or different colours.
, .
'': ' : .
This invention relates to a liquid crystal display panel.
In conventional liquid crystal panels, actual time display occupies most of the display surface so that the current hour and minute - is prominent, while the subsidiary display of seconds, the month, and the : day or the date is shown on the more limited dead space. An identifying plate with an identifying print portion is thus required on an upper panel glass all of which detracts from full utilization of the display surface.
If the identifying plate is omitted, it is necessary to designate the information being displayed by produclng a letter or character through electrical operation of the llquid crystal. This results in the necessity for a larger and more complicated nesa electrode.
~ This disclosure meets the disadvantages, avoiding printing on the ; upper panel gla8s and simplifies the nesa electrode of the upper and lower panel glasses, while still providing a structure of a display panel with a prominent timepiece display function.
Specific embodiments of the invention will now be described having reference to the accompanying drawings in which;
Figure 1 is a plan view of a display panel"
Figure 2 is a side view of the panel of Figure 1 and, Figure 3 is a section along line A~A of Figure 1.
As seen in the drawings, an upper polarizing plate 1, lies over an ` upper panel glass 2 on the upper surface of which is provided a colon 11. ~ ` -A separator 3 spaces panel glass 2 from a lower panel glass 5 forming space 4 for receipt of a liquid crystal. On the lower surface of glass 2 are individual nesa electrodes (not illustrated) for the liquid crystal.
A common electrode (also a nesa electrode) is printed on the upper side ` of lower panel glass 5.
An input signal for the liquid crystal is fed between selected indi~idual electrodes on upper panel glass 2 and the common electrode on panel glass 5. A lower polarizing plate 7 is provided below glass 5 and a reflection plate 8 is mounted below plate 7.
. 1 .,~ . .
: A -1-.
.
. ,.. . ; . . .
~ . . .` , .
This structure so far described is known. However, it has been found that if part of the polarizing plate 7 is replaced, in the region where the different display such as month, day, seconds or the like is to be displayed, by a partial polarizing plate 6 of a different colour from the primary basic appearance or colour of the display caused by plate 7, a portion 9 will then appear (Fig. 1) in which the partial plate 6 gives rise to a colour different from the primary appearance or colour of the main actual time display. The main display may or may not be in any partic-ular colour,being normally black on an essentially colourless background or vice versa. Thus, when the liquid crystal electrically operates the subsidiary display, it appears characterized by a colour which is different from the primary appearance.
The action of the liquid crystal in con~unction with light passed by the polarizing plates 1, 6 and 7 may be either to prevent or to enable light transmission dependent upon the orientation of the polarizing planes -of the polarizing plates in known manner. Thus, the electrical operation of the liquid crystal will be to actuate the subsidiary display either in the colour of the plate 6 against a dark background, or to display n dark integers against a background in the colour of plate 6.
Thus, since month, day and seconds are displayed in accordance ;
with the colour of the partial polarizing plate, no identlfying print portion, or plate, or electrical letter display or the llke by the liquid crystal, are necessary. The arrangement thus enables the display surface to be used to the full. Clearly, there is a wide range of choice of colour for the partial polarizing plate 6 and if other identified displays are desired, more than one plate 6 may be included for more than one region to appear in the same or different colours.
, .
'': ' : .
Claims (3)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a liquid crystal display device having a display surface;
an upper polarizing plate; an upper panel glass; first electrode means on said upper panel glass; a liquid crystal below said glass, a lower panel glass below said liquid crystal; second electrode means on said lower panel glass;
a lower polarizing plate and a partial polarizing plate mounted adjacent said lower polarizing plate and having a transmission different from said lower polarizing plate; said lower polarizing plate and said partial polarizing plate being mounted below said lower panel glass; and a reflection plate be-low said lower polarizing and partial polarizing plates; said lower polarizing plate having a transmission determining a first appearance for a first type of information displayed by said liquid crystal and said partial polarizing plate determining a second appearance of a different colour from said first appearance for a second type of information displayed by said liquid crystal;
said first and second types of information being displayed over separate portions of said display surface.
an upper polarizing plate; an upper panel glass; first electrode means on said upper panel glass; a liquid crystal below said glass, a lower panel glass below said liquid crystal; second electrode means on said lower panel glass;
a lower polarizing plate and a partial polarizing plate mounted adjacent said lower polarizing plate and having a transmission different from said lower polarizing plate; said lower polarizing plate and said partial polarizing plate being mounted below said lower panel glass; and a reflection plate be-low said lower polarizing and partial polarizing plates; said lower polarizing plate having a transmission determining a first appearance for a first type of information displayed by said liquid crystal and said partial polarizing plate determining a second appearance of a different colour from said first appearance for a second type of information displayed by said liquid crystal;
said first and second types of information being displayed over separate portions of said display surface.
2. The display device of claim 1, wherein said first type of information comprises indicia representing hours and minutes and said second type of information comprises indicia representing seconds.
3. The display device of claim 1 or claim 2, wherein said lower polarizing plate extends beneath a major portion of the display surface and said partial polarizing plate lies in a common plane with said lower polarizing plate and extends beneath a minor portion of said display surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP124197/75 | 1975-10-15 | ||
| JP50124197A JPS5248366A (en) | 1975-10-15 | 1975-10-15 | Electronic, digital timepiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1089657A true CA1089657A (en) | 1980-11-18 |
Family
ID=14879376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA263,376A Expired CA1089657A (en) | 1975-10-15 | 1976-10-14 | Digital electronic timepiece with multiple display |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5248366A (en) |
| BR (1) | BR7606839A (en) |
| CA (1) | CA1089657A (en) |
| CH (1) | CH619594GA3 (en) |
| GB (1) | GB1514388A (en) |
| IT (1) | IT1074736B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5628901A (en) * | 1979-08-13 | 1981-03-23 | Kobe Steel Ltd | Ground branching and joining apparatus of side direction guiding type vehicle |
| US6762479B2 (en) | 1998-11-06 | 2004-07-13 | International Business Machines Corporation | Microwave array transistor for low-noise and high-power applications |
-
1975
- 1975-10-15 JP JP50124197A patent/JPS5248366A/en active Pending
-
1976
- 1976-10-08 GB GB41952/76A patent/GB1514388A/en not_active Expired
- 1976-10-12 BR BR7606839A patent/BR7606839A/en unknown
- 1976-10-13 IT IT51715/76A patent/IT1074736B/en active
- 1976-10-14 CA CA263,376A patent/CA1089657A/en not_active Expired
- 1976-10-14 CH CH1301776A patent/CH619594GA3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1074736B (en) | 1985-04-20 |
| CH619594B (en) | |
| JPS5248366A (en) | 1977-04-18 |
| BR7606839A (en) | 1977-08-30 |
| CH619594GA3 (en) | 1980-10-15 |
| GB1514388A (en) | 1978-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |