KR830001766Y1 - Full electronic analog display clock - Google Patents

Abstract

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Description

Full electronic analog display clock

1 is a front view showing a display example in which a short hand display and a long hand display are conventionally duplicated.

2 is a front view showing an example of a display device of the present invention.

3 is a block diagram showing an example of a circuit configuration of the present invention.

4 is a logic circuit diagram showing details of the main part of FIG.

5 and 6 are front views each showing a display example according to the present invention.

The present invention relates to an all-electronic analog display clock using liquid crystal lamps.

For example, in a watch that displays an analog display using liquid crystals, the short hand segment is shared with a part of the long hand display segment so that the long hand and the short hand are displayed in the same thickness. So, if the hour hand and hour hand display overlaps once an hour, for example, when 1: 5 is displayed as shown in Fig. 1, the hour hand sign is not displayed and only the long hand is displayed, causing a mistake It made a strange impression.

Therefore, the present invention is to remove the above-mentioned defects by temporarily shifting the position of the short hand mark when the long hand mark and the short hand mark overlap.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

2 shows a visual display device, and is composed of two glass substrates and a liquid crystal sandwiched therebetween.

On the other hand, ring-shaped common electrodes C ₁ and C ₂ are formed on the glass substrate, and 60 segment electrodes S ₀ ... (S ₅₉ ) is formed radially. Segment electrode S ₀ . (S ₅₉ ), the first display segment is formed by the common electrode C ₂ and the liquid crystal interposed therebetween, and the segment electrode S ₀ . ( _S59 ), the second display segment is constituted by the common electrode C ₁ and the liquid crystal interposed therebetween. Common electrode C ₁ , C ₂ and segment electrode S ₀ . A lead paper (not shown) is derived independently from S ₅₉ .

In FIG. 3, CT ₁ is a clock circuit which receives the clock pulse from the terminal a and counts the minute, CT ₂ is a 60-degree start circuit for displaying the hour, and from the clock circuit CT ₁ You get an output every 12 minutes.

(D ₁ ) and (D ₂ ) are decoders, and output terminals P ₀ ... Of the decoder D ₁ . From P ₅₉ , the selective output of the first and second display segments for long hand display is issued one by one every minute, and the output terminal 9 ₀ ... Of the decoder D ₂ . From (9 ₅₉ ), the selective output of the first display segment for short hand display is generated every 12 minutes. B is a control circuit described later, and when the long hand display and the short hand display overlap, the selective output of the next adjacent first display segment occurs.

The DR is a driving circuit composed of an analog switch, etc., and selectively selects three kinds of control signals for long hand display, short hand display, and non-display segment electrode S ₀ . Supply to (S ₅₉ ). On the other hand, different control signals are supplied to the common electrodes C ₁ and C ₂ , and the first and second display segments are selectively driven by the control signals from the driving circuit DR. And minute hand markings.

In addition, since the structure of the drive circuit DR and the waveform of each said control signal are already known facts, it abbreviate | omits.

4 shows a part of the control circuit B in detail, (G ₁ ). (G ₈ ) is the gate circuit.

Next, the operation will be described.

First, the long hand display will be described.

Hourly 0... At 59 minutes each terminal P ₀ of the decorator D ₁ . An output is issued at P ₅₉ , whereby the terminal t ₀ of the driving circuit DR. At t ₅₉ , the control signal for the long hand display is generated and the segment electrode S ₀ . S ₅₉ is supplied.

Thus 0... The first and second display segments corresponding to 59 minutes are displayed in sequence, and the long hand display advances every minute.

On the other hand, the driving circuit DR is connected to the terminal r ₀ . (r _59), each output terminal (t ₀₎ by the output from ... (t ₅₉ ), a control signal for short-hand display is generated and the segment electrode s ₀ . supplied to s ₅₉ , the short hand indication is performed.

In this case, the terminal (P ₀ ), terminal (r ₀ ),... The control circuit B is configured so that an output is not simultaneously supplied from the terminal P ₅₉ and the terminal r ₅₉ . The operation will be described.

The time when the hour hand display and the hour hand display overlap is 12:00, 1: 5, 2:10, 3:16, 4:21, 5:27, 6:32, 7:38 12 times, 8:43, 9:49, 10:54, and 11:59.

First, when 1: 5, an output is generated at the terminal P ₅ of the decorator D ₁ and the terminal 9 ₅ of the decorator D ₂ .

That is due to occur, the output to the terminal (r ₆₎ of the fourth-degree at the same time, the gate circuit gates the output of the circuit (G ₄₎ inhibition (G _5). As a result, a control signal for long hand display is generated from the terminal t ₃ of the drive circuit DR by the output from the terminal P ₅ , and a control signal for short hand display is generated from the terminal t ₆ .

Therefore, as shown in FIG. 5, the long hand display and the short hand display are shifted, thereby making an extremely natural 1: 5 display.

1: 6, since the output occurs at the drawing terminal P ₆ and the terminal 9 ₅ , the output of the gate circuit G _{3 of} FIG. 4 becomes "0", so that the terminal r ₅ of the gate circuit G ₄ is generated. At the same time, the output from the gate circuit G ₆ is stopped. Therefore, 1: 6 is displayed as in FIG.

In the same way as this, the hour hand display and the long hand display overlap with each other.

However, at 12: 00, when the position of the short hand display is shifted, it becomes unnatural. In this case, only the long hand display is performed. That is, when the output is generated from the terminal P ₀ and the terminal 9 ₀ at 12:00, the output of the gate circuit G _{1 of} FIG. 4 becomes "1" and the output of the gate circuit G ₂ is prohibited. Therefore, only the long hand display is performed by the output from the terminal P ₀ .

At times other than the above, the terminals 9 ₀ of the decoder D ₂ . In (9 ₅₉ ), the outputs of the control circuit B terminal (r ₀ )... It occurs as is at (r ₅₉ ) and normal short-hand display is performed.

By the way, in the above-described embodiment, overlapping of the device display is avoided by setting the one-hand display one step ahead. In particular, the one-hand display may be delayed by one at a time overlapping after 7:38.

The shape of the electrode of the display device, the wiring method of the lead wire, and the like are not limited to the above.

As described above, according to the present invention, when the hour hand display and the long hand display overlap each other, the position of the hour hand display is temporarily shifted, so that the time display that is easy to see is always possible.

Claims (1)

A plurality of first display segments a arranged in a radial manner, a second display segment b arranged in a radial direction corresponding to each of the first display segments, and a first display segment In an all-electric analog display clock having a driving circuit DR for selecting the first display segment and the second display segment in the same radial direction and displaying the long hand in the same radial direction. And a control circuit (B) for selecting at least two first display segments adjacent to the first display segment and displaying a single hand when the overlaps are provided.