JPH0243188B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calendar display device.

Calendar display devices, which are generally used in small watches, simply display the current date and day of the week, making it difficult to use because it is difficult to tell which day of the month it is.

Therefore, the present invention provides a date display element corresponding to each date and a day display element for displaying a specific day of the week to display a specific day of the week of the current month, for example Sunday, and also display the current day. This makes it possible to keep the interval constant and to have a large operating margin, thereby eliminating the drawbacks of the conventional method.

Hereinafter, one embodiment of the present invention will be described based on the drawings. Display device A in Figure 1 is a glass substrate in Figure 2.
Consisting of glass substrates B ₁ , B ₂ and a liquid crystal (not shown) filled between the two substrates, a date selection electrode e ₁ corresponding to each date from the 1st to the 31st is provided on one surface of the glass substrate B ₁ .
- e ₃₁ are formed, and day selection electrodes f ₁ -f ₃₁ for displaying Sunday are formed. Selective electrode e ₁ ...
e ₃₁ and selection electrodes f _{1 .} . . f ₃₁ are electrically connected to each other and constitute a pair of electrodes. There are four selection electrodes e ₁ ...e ₂₈ and three selection electrodes f ₁ ...f ₂₈ .
Each block is divided into small blocks, and the lead wire S ₁ ...
Each block is connected in a zigzag manner by _S4 . Also date selection electrode compatible with 29th, 30th and 31st
e ₂₉ , e ₃₀ , e ₃₁ and day selection electrodes f ₂₉ , f ₃₀ , f ₃₁ are connected to lead wires S ₅ , S ₆ , S ₇ respectively. On the other hand, common electrodes E 1 ...E ₉ are formed on the glass substrate B ₂ at positions facing the selection electrodes e ₁ ...e ₃₁ , and the common electrodes E _{1 ,} E ₃ , E ₇ are respectively connected to the selection electrodes (e ₁ ... _e4 ),
Opposed to (e ₈ ... e ₁₁ ), (e ₁₅ ... e ₁₈ ), (e ₂₂ ... e ₂₅ ),
Common electrodes E ₂ , E ₄ , E ₆ , E ₈ , E ₉ are selective electrodes (e ₅ , e ₆ , e ₇ ), (e ₁₂ , e ₁₃ , e ₁₄ ), (e ₁₉ , e ₂₀ , e _{twenty one}
),
(e ₂₆ , e ₂₇ , e ₂₈ ) and (e ₂₉ , e ₃₀ , e ₃₁ ) are opposed to each other. In addition, common electrodes E ₁₀ and E ₁₆ are located at positions facing the selection electrodes f ₁ ... f ₃₁ , respectively, and are selection electrodes (f ₁ ... f ₄ ).
(f ₈ ... f ₁₁ ), (f ₁₅ ... f ₁₈ ), (f ₂₂ ... f ₂₅ ),
Common electrodes E ₁₁ , E ₁₃ , E ₁₅ , E ₁₇ , E ₁₈ are selective electrodes (f ₅ , f ₆ , f ₇ ), (f ₁₂ , f ₁₃ , f ₁₄ ), (f ₁₉ , f ₂₀ ,
f ₂₁ ), (f ₂₆ , f ₂₇ , f ₂₈ ), and (f ₂₉ , f ₃₀ , f ₃₁ ). Selective electrode e ₁ …e ₃₁ , liquid crystal and common electrode
_E1 ... _F9 constitute a date display element, and selection electrodes _f1 ... _f31 , liquid crystal and common electrodes _E10 ... _E18 constitute a day of the week display element.

In Figure 3, OSC is a water oscillator, D is a frequency divider, and its output terminals f _D and f _F output pulses for AC driving the liquid crystal and 1 Hz pulse for blinking the display element of the day, respectively. occurs.
DC is a counter, the output of which produces a pulse every 24 hours. MC is a month discrimination circuit consisting of day and month counters, etc., and if the current month is the 29th,
It determines whether the month has 30th or 31st days and produces outputs at terminals a, b, and c, respectively. Note that various configurations are known and will be omitted here. SC is a heptad ring counter that produces the Sunday selection output.
R ₁ and R ₂ are heptadonic and 9-adjustable ring counters, respectively, and select electrodes e ₁ ...e ₃₁ , f ₁ ..., respectively.
This is for selection of f ₃₁ and common electrodes E ₁ ...E ₁₁ . T is a pulse generation circuit, and its output terminal
From P ₁ , P ₂ , and P ₃ are common electrode control signals CP ₁ ,
CP ₂ and CP ₃ (shown in the 8th diagram) are generated, and the output terminals Q ₁ ...Q ₄
From is a control signal QP ₁ for the selection electrodes e ₁ ... e ₃₁ , f ₁ ... f ₃₁
...QP ₄ (shown in Figure 8) is generated. _G1 ... _G8
is a gate circuit. M and N are control circuits that control the supply of signals to the common electrode, _E1 ... _E11 , and selection electrodes _e1 ... _e31 , _f1 ... _f31 , respectively, and the detailed configuration of the control circuit M is shown below. Figure 4 shows this.

In the same figure, G ₉ ... G ₂₁ are gate circuits, V ₁ ... V ₃
is an inverter.

5 and 6 show the control circuit N in detail, G ₂₂ ...G ₉₄ are gate circuits, V ₄ ...V ₃₆
is an inverter.

Next, the operation will be explained. In Figure 3, the output of the ring counter SC generates an output that indicates which day of the month is Sunday, and the terminals J ₁ ... J ₄
produces the selection output of the selection electrode corresponding to Sunday. That is, when any of the dates corresponding to the selection electrodes connected to the lead wires S ₁ ...S ₄ in FIG. 2 is Sunday, selection outputs are generated from the terminals J ₁ ...J ₄ , respectively. On the other hand, from the terminal W, when the 5th, 6th, or 7th is Sunday, that is, the common electrode E ₂ in FIG.
Output occurs when the date opposite E ₄ , E ₆ , and E ₈ is Sunday.

In addition, ring counter _R1 receives the output from counter DC, counts the current day, and connects it to its output terminal.
K ₁ and the output terminals K ₂ of gate circuits G ₅ , G ₆ , G ₇ ,
From K ₃ and K ₄ , respectively in Fig. 7 K ₁ , K ₂ , K ₃ , K ₄
The selected output for the current day is generated as shown below.

Furthermore, ring counter R ₂ is a ring counter
An output from R ₁ is received, and selection outputs of common electrodes E ₁ ...E ₉ are generated from output terminals L ₁ ...L ₉ , respectively.
In other words, the common electrode corresponding to that day is selected.

First, the output generated from the control circuit M will be explained with reference to FIG. In the following explanation, it is assumed that the 2nd, 9th, 16th, 23rd, and 30th are Sundays. In other words, it is assumed that the Sunday date faces the common electrodes E ₁ , E ₃ , E ₅ , E ₇ , and E ₉ . Therefore, in this case, the output terminal W of the gate circuit G ₄ in FIG. 3 is held at "0", and the output terminal W of the gate circuit G 4 in _FIG .
_G14 is open. Therefore the signal from terminal P ₁
Gate circuit G ₁₂ via CP ₁ or gate circuit G ₉ , G ₁₁
and the level of the signal CP ₁ is inverted every cycle by a pulse from the terminal fD to the common electrodes E ₁₀ ,
It is supplied to E ₁₂ , E ₁₄ , E ₁₆ , and E ₁₈ . On the other hand, the signal CP ₂ from the terminal P ₂ is supplied to the gate circuit G ₁₆ via the gate circuits G ₁₄ and G ₁₅ , and the level of the signal CP ₂ is inverted every cycle and is applied to the common electrodes E ₁₁ , E ₁₃ , E _{15 .} , supplied to E ₁₇ .

Also, when the terminals Ln (n=1...8) sequentially become "1", the signal _CP3 from the terminal _P3 is sequentially transmitted to the lead wire Cn+
otherwise, signal ₂ from terminal ₂ is supplied. In other words, when any one of days 1 to 4 is the current day, terminal _L1 becomes "1",
The signal CP ₃ is supplied to the common electrode E _{1 via the lead wire C 3 and} the signal ₂ is supplied to the other common electrodes E ₂ . . . E ₉ . When the 5th, 6th, or 7th day is the current day, the signal CP ₃ is supplied to the common electrode E ₂ , and the other common electrodes
Signal ₂ is supplied to E ₁ , E ₃ ...E ₉ , (8...11)
When Sunday, (12, 13, 14) day, ... (26, 27, 28) day is the current day, the signal CP ₃ is supplied to the common electrodes E ₃ ... E ₉ , respectively.

That is, the common electrodes E ₁ ... E ₈ are each shown in Fig. 7.
Signals are supplied as E ₁ , E ₂ , etc.

Next, the operation of the control circuit N will be explained with reference to FIGS. 5 and 6. Now 2, 9,
Since the 16th, 23rd, and 30th are Sundays, the terminals in Figure 3
J ₁ , J ₃ , J ₄ , and W are held at "0", and terminal J ₂ is held at "1". Therefore, when looking at the signal supplied to lead wire _S1 , the terminal Ji (J
= 1) is “0”, so the gate circuits G ₂₆ , C ₃₂
is open. Therefore, the terminal as shown in Figure 7 _K1
When K ₁ becomes “1” on the 1st, 8th, 15th, 22nd, and 29th,
The output of the gate circuit G ₂₆ becomes "1", and therefore the gate circuits G ₂₇ and G ₂₈ are alternately opened by the 1 Hz pulse from the terminal fF, and the signals QP ₄ and ₂ from the terminals Q 4 and Q ₃ are QP ₃ passes alternately. Signal QP ₄ , QP ₃
As shown in FIG. 7 _S1 , the signals are supplied to the gate circuit G34 via _the gate circuits _G29 and _G34 , and their levels are inverted every cycle and then supplied to the lead line _S1 .

In addition, on dates other than the above, since the terminal _K1 is "0", the gate circuit _G33 is opened by the output of the gate circuit _G32 , and the signal is output as shown in Fig. 7 _S1 .
QP ₃ is supplied to lead S ₁ .

On the other hand, on the 1st, the common electrode E ₁
Since the signal CP ₃ is supplied to the LCD, the signals V ₇ and V ₈ shown in FIG. 8 are alternately applied to the liquid crystal facing the selection electrode e ₁ , and the date display element of the 1st blinks to display the current day. . At this time, the signal ₂ is supplied to the common electrodes E ₃ , E ₅ , and E ₇ , so the signals V ₃ and V ₄ are alternately applied to the date display elements on the 8th, 15th, and 22nd, and they are turned on. On the 8th, the signal CP ₃ is supplied to the common electrode E ₃ , so the date display element on the 8th blinks, and 1, 15, 22
The date display element lights up. On the 15th and 22nd, each date display element blinks.

Since the signal QP ₃ is supplied to the lead wire S ₁ for dates other than the above, any of the signals V ₃ , V ₄ , and V ₇ is applied to the date display elements for the 1st, 18th, 15th, and 22nd. Light.

In addition, the signal QP ₃ is also connected to the day selection electrodes f ₁ , f ₈ , f ₁₅ , and f ₂₂ .
Alternatively, QP ₄ is supplied in exactly the same manner as above, and the common electrodes E ₁₀ , E ₁₂ , E ₁₄ , E ₁₆ are supplied with the signal CP ₁ as described above, so that 1, 8, 15, 22 A signal V ₁₅ or V ₁₆ is applied to the day of the week display element for the day, so that the day of the week is not displayed.

Signals similar to those described above are also supplied to the lead wires S ₃ and S ₄ . In other words, 3, 6, 10, as shown in Figure 7 K ₃ .
When the terminal _K3 becomes "1" on the 13th day, the signals _QP3 and _QP4 are alternately supplied to the lead wire _S3 as shown in Fig. 7 _S3 , and only the signal _QP3 is supplied on other days. Ru. On the other hand, the terminals _K4 are 4, 5, 11, 12, etc. as shown in Fig. 7 _K4 .
When it becomes “1” on the day, the lead line as shown in Figure 7 S ₄
Signals QP ₃ and QP ₄ are supplied to S ₄ , and on other days the signals
Only QP ₃ will be supplied. Therefore, the signals V ₇ and V ₈ are alternately applied to the date display element of the current day, causing it to blink.

In addition, the signal QP ₃ or QP ₄ is supplied to the day selection electrodes connected to the lead wires S ₃ and S ₄ , and the signal CP ₁ or CP ₂ is supplied to the common electrode facing these, so that each day of the week is The display element receives signals V ₁₁ ,
Any one of V ₁₂ , V ₁₅ , and V ₁₆ is applied, and all are hidden.

Next, the signals supplied to the lead wire _S2 will be explained. Since the terminal J ₂ is currently held at "1", one input Ji (i = 2) of the gate circuits G ₂₂ and G ₃₀ in Fig. 5
is held at "1".

First, for example, if the current day is the 2nd, the terminal _K2 becomes "1", so the gate circuits _G23 and _G24 are opened by the output of the gate circuit _G22 , and the signal _QP1 is output as shown in FIG. ₇ S2. , QP ₂ are alternately supplied to the lead wire S ₂ . At this time, the signal CP ₃ is supplied to the common electrode E ₁ and the signal ₂ is supplied to the other common electrodes E ₂ and E ₈ . Therefore, the signals V ₅ and V ₆ shown in FIG. 8 are alternately applied between the selection electrode e ₂ and the common electrode E ₁ and blink to indicate the current day. On the other hand, between the selection electrodes e ₉ , e ₁₆ , e ₂₃ and the common electrodes E ₃ , E ₅ , E ₇ and the selection electrodes e ₇ , e ₁₄ , e ₂₁ , e ₂₈
and the common electrodes E ₂ , E ₄ , E ₆ , E ₈ have pulses V ₁ , V ₂ between them.
is applied alternately and lights up.

Moreover, the signal CP ₁ is connected to the common electrodes E ₁₀ , E ₁₂ , E ₁₄ , and E _{16 .}
However, since the signal CP ₂ is supplied to the common electrodes E ₁₁ , E ₁₃ , E ₁₅ , and E ₁₇ , the signals V ₁₃ and V ₁₄ are alternately displayed on the day of the week display elements for 2nd, 9th, 16th, and 23rd. applied to show that these dates are Sunday, 7.
Signals V ₉ and V ₁₀ are alternately applied to the day of the week display elements for the 14th, 21st, and 28th, so that they are not displayed.

When the 9th, 16th, and 23rd are the current day, the signal CP ₃ is supplied to the common electrodes E ₃ , E ₅ , and E ₇ , respectively, and the display elements for each date blink as described above, and the 7th, 14th, 21st, If the 28th is the current day, the common electrodes E ₂ , E ₄ , E ₆ ,
Signal CP ₃ is supplied to E ₈ and each date flashes.

Then 2nd, 9th, 16th, 23rd and 7th, 14th, 21st, 28th
If the date is not the current day, the terminal Ki (i=
2) becomes "0", the gate circuit _G31 is opened by the output of the gate circuit _G30 , and the signal _QP1 from the terminal _Q1 is supplied to the lead wire _S2 as shown in Fig. 7 _S2 . . Therefore, the signal V ₁ is applied to the display element for each date above.
Alternatively, _V5 is applied and the light turns on. Also 2,9,
A signal V ₁₃ is applied to the day of the week display elements for the 16th and 23rd to display the days of the week, and a signal V ₉ is applied to the day of the week display elements for the 7th, 14th, 21st and 28th to make them non-display.

Display of the current day and days of the week from the 1st to the 28th is performed as described above, and the display of the 29th, 30th, and 31st is performed as follows.

A signal CP ₃ is constantly supplied to the common electrode E ₉ . First, if the current month is the 28th, the month discrimination circuit shown in Figure 3
Since the output terminals a, b, and c of the MC are all held at "0", the gate circuits G ₅₂ , G ₇₂ , and G ₉₁ in FIG. 6 are opened. Therefore, the signal QP ₄ is supplied to the lead wires S ₅ , S ₆ , and S ₇ .

Therefore, the signal V ₈ is applied to the date display elements for the 29th, 30th, and 31st, making them non-display, and the day of the week display elements for each date are applied with either the signal V ₁₂ or V ₁₆ , making them non-display. becomes.

Next, if the current month is the 29th, the month discrimination circuit
MC terminal a is held at “1” and the gate circuit
G ₅₃ , G ₇₂ , G ₉₁ open, and if the 29th is the current day and is not a Sunday, the output of gate circuit G ₄₀ opens gate circuits G ₄₁ and G ₄₂ and signals QP ₃ and QP ₄ alternate. pass. Therefore, the signals V ₇ and V ₈ are alternately applied to the date display element for the 29th, causing it to blink to display the current day. On the other hand, since either the signal CP ₁ or CP ₂ is supplied to the common electrode E ₁₈ at this time,
The signals V ₁₅ and V ₁₆ or the signals V ₁₁ and V ₁₂ are applied alternately to the day of the week display element for the 29th to display the day.

If the 29th is a Sunday, the output of the gate circuit _G36 opens the gate circuits _G37 and _G38 , and the signals _QP1 and _QP2 are alternately supplied to the lead wire _S5 . On the other hand, common electrodes E ₉ and E ₁₈ receive signals CP 3 and CP ₃ , respectively.
Since CP ₁ is supplied, the signals V ₅ and V ₆ are alternately applied to the 29th date display element and it blinks, and the signals V ₁₃ and V ₁₄ are alternately applied to the day of the week display element and displayed. .

In addition, if the 29th is not the current day but is a Sunday, the gate circuit G ₄₅ opens and the signal QP ₁ passes through to send signals to the date display element and the day of the week display element.
V ₁₅ and V ₁₃ are applied and displayed.

Furthermore, when the 29th is neither a Sunday nor the current day, the gate circuit G ₄₈ is opened, the signal QP ₃ passes through, and the signals V ₅ ,
V ₉ is applied to display and hide respectively.

Next, if the current month is the 30th, terminals a and b of the discrimination circuit MC are held at "1", and the gate circuit
G ₅₃ , G ₇₃ and G ₉₁ open. Therefore, signals are applied to the date and day of the week display elements for the 29th and 30th in the same manner as described above, and the display up to the 30th is performed.

If the current month is the 31st, terminals a, b, and c of the discrimination circuit MC are held at "1", and the gate circuit
G ₅₃ , G ₇₃ , and G ₉₂ will open and display up to the 31st.

In the above embodiment, the signals supplied to the selection electrode and the common electrode are all at the same voltage, but instead of the signals CP ₁ , CP ₂ , CP ₃ , _2, the signals CP ₁ ', CP ₂ shown in FIG. 9 are used, respectively. ′, CP ₃ ′, ₂ ′, the signal QP ₁
...QP ₄ may be replaced with signals QP ₁ ′...QP ₄ ′.
According to this, the signals V ₁ ′, V ₂ ′,
V ₉ ′, V ₁₀ ′ and the signals applied when the light is off V ₂ ′, V ₄ ′,
Since the difference in the effective voltage values of V ₅ ′, V ₆ ′, V ₇ ′, V ₈ ′, V ₁₁ ′, and V ₁₂ ′ is large, in other words, there is a large operating margin, so crosstalk is difficult to occur and the contrast is large. Moreover, it has a fast response speed and can be used in a wide temperature range.

Furthermore, although the dates are arranged in a straight line in the above embodiment, the dates are not limited to this and may be arranged in a circle.

As detailed above, according to the present invention, a display element indicating the date and a corresponding day display element are provided to display a specific day of the week such as Sunday and the current day. It becomes easier to read.

Moreover, each date and day of the week selection electrode is divided into 4 and 3 small blocks, and each small block is divided into 4 and 3 small blocks.
They are connected in a zigzag manner using book lead wires, and the day selection electrodes of the same day of the week are connected using a common lead wire.A common electrode corresponding to each small block is provided via the liquid crystal, and multiple types of signals are connected to each lead wire and Since display is performed by selectively supplying power to each common electrode, when wiring lead wires, it is possible to route the wires without passing many lead wires through the gaps between the selected electrodes, and the spacing between each display element can be kept constant. It is something that can be done. Moreover, since the same day-of-week selection electrodes are connected by a common lead wire, it is possible to reduce the types of pulses supplied to the lead wires in order to obtain the desired display, and drive with a large operating margin is possible. . Therefore, crosstalk is less likely to occur, contrast is increased, response speed is fast, and it can be used in a wide temperature range.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is an exploded view of Fig. 1, Fig. 3 is an electric circuit diagram showing an example of the drive device, and Fig. 4. , FIG. 5 and FIG. 6 are electrical circuit diagrams showing the main parts of FIG. 3 in detail, FIG. 7 is a signal explanatory diagram showing signals supplied to the electrodes and signals applied to the display element, and FIG. FIG. 8 is an explanatory diagram showing an example of the signal supplied to the electrodes and the signal applied to the liquid crystal, and FIG. 9 is an explanatory diagram showing another example of the signal supplied to the electrode and the signal applied to the display element. be. e ₁ - e ₃₁ ... date selection electrode, f ₁ - f ₃₁ ... day selection electrode, E ₁ - _{E 18} ... common electrode, S ₁ - _{S 4} ... lead wire.

Claims (1)

[Claims] 1. Date selection electrodes indicating the date are arranged in a line, and a day selection electrode indicating a specific day of the week is provided corresponding to each date selection electrode, and each corresponding date selection electrode and day selection electrode are electrically connected to form a pair. Configure the electrodes, divide each pair of electrodes into large blocks of 7 pairs, and divide each large block into 4 pairs and 3 pairs.
It is divided into small blocks consisting of pairs of electrodes, and three pairs of electrodes in each small block are connected in a zigzag manner by three lead wires, and the remaining pair of electrodes in each small block consisting of four pairs of electrodes are connected in a zigzag manner. are connected by a common lead wire, and the day selection electrodes of the same day of the week are connected by a common lead wire, and the common electrodes are opposed to each other through the liquid crystal for each date selection electrode and day selection electrode that constitute each small block. The common electrode, liquid crystal and date selection electrode constitute a date display element, the common electrode, liquid crystal and day of the week selection electrode constitute a day of the week display element, and multiple types of signals are selectively supplied to the lead wire and common electrode. A calendar display device is provided with a drive circuit that selects a predetermined day of the week display element to display a specific day of the week in the current month, and displays the current day's date display element in a display mode different from other date display elements.