JPS6333469Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a fluorescent display tube, and in particular, a silver paste or the like is placed on an insulating substrate in a vacuum-tight container formed by a transparent display window and an insulating substrate such as glass or ceramic. A feeder line is formed using a conductive material such as graphite as a base electrode through an insulating layer, and a phosphor layer is formed in a desired display pattern on this base electrode, and a filament is placed in a vacuum-tight container. The present invention relates to a wiring structure of a power supply line that controls the display of a partial display pattern in a fluorescent display tube that performs luminescent display by controlling and bombarding electrons emitted from a grid with electric signals applied to the grid.

Fluorescent display tubes have been widely used in calculators, ECRs, games, clocks, etc. due to their low voltage and low power operation. Recently, advances in printing technology have made it possible to draw complex patterns and feed lines, and they are now widely used to display clocks and timers in audio equipment, cars, microwave ovens, etc. When used in this timer, an alarm display is required, and conventionally, as an example of an alarm display for such a timer, a method of directly blinking the display pattern has been used.
With such a blinking control method, it is difficult to control a part of an integrally formed display.

An object of the present invention is to provide a fluorescent display tube that can perform dimming display by utilizing the line capacitance of the substrate of the fluorescent display tube in order to eliminate this drawback.

According to the present invention, in a fluorescent display tube in which at least one of the display patterns of symbols and numbers used for time display and timer display flashes, the underlying electrode of the display electrode that performs the flashing display is A fluorescent display tube is obtained which is characterized in that another power supply line independent of the power supply lines to other display electrodes is disposed under at least a part of the display electrode via an insulating layer.

Examples of its use include the following.

(a) When the clock displays hours and minutes, the seconds signal is displayed by a blinking bell mark.

(b) To indicate the arrival of alarm time, use a blinking bell mark or a blinking clock pattern.

(c) After a power outage, an alarm is displayed with a bell mark or a blinking clock pattern in order to catch requests for adjustment of the delayed return time. The effect of this is that the number of control (SW) elements can be reduced, and local dimming is also possible. etc. can be mentioned.

The explanation will be given below with reference to the bell mark and the drawings.

FIG. 1 shows an example of a conventionally used display pattern for clocks and timers, and FIG. 2 shows its insulating layer. Figure 3 shows a power supply line for making the display pattern emit light, and the connection terminal 31 is the conductive part 2 of the insulating layer.
1, conduction is established with the connection terminal 11 of the display pattern, and connected to an external lead wire (not shown). Each segment terminal 30 is displayed by a signal from this external lead.

FIGS. 4 and 5 show power supply lines utilizing the present invention, in which a power supply line 40 to other display electrodes is disposed below a bell mark display electrode.

By arranging it in this way, when a signal indicating seconds is connected to the feeder line 40, the feeder line 4
The bell mark blinks due to the line capacitance formed between 0 and the base electrode of the bell mark. Of course, there is no problem with independent signals.

According to this configuration, the shape of the feeder line (which can also be considered as a feeder electrode) laid under the base electrode of the blinking display electrode can be changed to the planar shape ₄₀₂ shown in FIG. Since it is also possible to display a line 40 ₁ as shown, it is possible to make a part of the area display or line display blink, or to modulate the display, making it possible to perform a wide variety of displays.

Although a simple embodiment has been described above, it is clear that the present invention is not limited by the clock pattern, the shape of the power supply line, etc.

[Brief explanation of drawings]

Figure 1 is a plan view of an example of a clock display pattern, Figure 2 is its insulating layer, Figure 3 is a conventional power supply line diagram, and Figures 4 and 5 are power supply line diagrams according to the present invention. be. DESCRIPTION OF SYMBOLS 11...Connection terminal of display pattern, 21...Conduction hole of connection terminal of insulating layer, 31...Connection terminal of power supply line diagram, 40 ₁ ...Line-shaped power supply line with bell mark according to the present invention, 40 ₂ ... ...A planar power supply line with a bell mark according to the present invention.

Claims (1)

[Scope of utility model registration request] In a fluorescent display tube that blinks at least one of the display patterns of symbols and numbers used for time display and timer display, under at least a part of the base electrode of the display electrode that performs the blinking display. 1. A fluorescent display tube characterized in that another power supply line independent of the power supply lines to other display electrodes is provided through an insulating layer.