JPH03107991A - Behavior display device - Google Patents

Abstract

PURPOSE:To prevent the number of picture elements increased without lowering a display function by forming a destination display part with an electrochromic display of dot matrix system and forming a time display part with an electrochromic display of segment display system. CONSTITUTION:For example, a person operates a keyboard and inputs a display content on a various kinds of display parts 17-19 at a state where a card 20 on which a name is entered is inserted to a name display part 16. Then, a destination name is displayed on the destination display part 17 in a dot matrix system, and an outing state is displayed with the coloring/decoloring of two dot shape EC picture elements 21, 22 with in-office/out-office display part 18, and a return time is displayed on a return time display part 19 in a segment display system. Thereby, the behavior status of individual person can be confirmed by visualizing the behavior display device 14. In such a way, it is possible to prevent the number of picture elements increased without lowering the display function.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a behavior display device using an electrochromic display.

BACKGROUND OF THE INVENTION In recent years, in order to improve the efficiency of various types of work that have become increasingly diverse, there has been a demand for equipment that can display the name of each person's destination, return time, etc. Examples of such devices include whiteboards, but since the displayed content must be written on with a pen, the installation position of the device is limited, and it is also difficult to erase the displayed content at the end of the work day. It has to be done at work, and the work is complicated and undesirable.

Therefore, it is being considered to use currently developed display devices to produce an action display device in which display contents can be input by operating a keyboard or the like. Display devices that can be used in such devices include, for example, LEDs (light emitted diodes) and LCDs (liquid crystal displays).

However, in order to maintain the displayed content, LEDs need to be continuously energized, and even if the content is the same, the longer the display is displayed, the more power it consumes, and the displayed content is erased when a power outage occurs. Not suitable for L
CDs have problems such as an extremely small viewing angle and the need for a backlight for clear display.

Electrochromic displays exist as display devices that have solved these problems. This ECD (electrochromic display) is a display device that uses a substance that produces color through a chemical reaction when electricity is applied, and the colors are clear and the viewing angle is wide.

- It has many advantages, such as the ability to maintain the coloring state for a long period of time even if the current is turned off when the color is developed by applying a variable current.

Therefore, a first conventional example of such an ECD will be explained based on FIGS. 8 and 9. First, this ECDl is a substantially rectangular EC pixel (electrochromic display pixel)
2 is formed using a seven-segment display system that displays digital numbers. Here, these EC pixels 2 are provided with a flat transparent electrode 4, WO3 under a transparent substrate 3.
It is formed by sequentially stacking an electrolyte layer 6 containing ECC50Li, etc., a counter electrode 7, etc.

Further, around these laminated films 5 to 7, each EC pixel 2
An insulating layer 8 is provided which insulates the two from each other. On the other hand, the transparent electrode 4 and the counter electrode 7 are connected via a switch 10 to DC power sources 9a and 9b whose current directions are opposite to each other.

In such a configuration, by operating the switch 10,
For example, by applying a current such that the transparent electrode 4 is - and the counter electrode 7 is -, the following chemical reaction occurs with the ECC50 electrolyte layer 6.

WO□+L　i”　+　c knee+L　i　W○.

Here, WO3 is a colorless substance, but the product L
iWO, indicates blue. Further, even if the current supply is cut off after this reaction is completed, LiWO is chemically approximately stable and does not disappear in a short period of time. Furthermore, since the above chemical reaction is a reversible reaction, by applying a current in the opposite direction to the above,
L i W O3 is decomposed into WO3 and Li again, and the color development is erased. That is, the above-mentioned ECDI can display a desired digital number by electrically controlling each EC pixel 2.

Next, the second conventional example of ECD is shown in Figures 10 to 12.
This will be explained based on the diagram. This ECDll is formed in a dot matrix format in which a large number of square EC pixels 2a are arranged vertically and horizontally. Therefore, the electrical configuration of the drive circuit 12 that controls these EC pixels 2a will be explained based on FIG. 12. A drain electrode 13a of a TFT (thin film transistor) 13 is connected to each EC pixel 2a.

Further, the source electrodes 13b of each of the TFTs 13 are wired in each row and connected to a first pulse voltage g (not shown). Similarly, the gate electrodes 13c are wired for each column and connected to a second pulse power source (not shown).

In such a configuration, each TFT 13 corresponds to the pulse current generated by the first and second pulse power sources.

For example, control is performed sequentially for each column. Then, by synchronizing the pulse currents applied to the source electrode 13b and the gate electrode 13c, a predetermined TFT 13 applies a current to the EC pixel 2a, and a coloring operation is performed. That is, E
A desired image is displayed using a dot matrix method in which the C pixel 2a is one dot.

Furthermore, the image display speed of such a dot matrix type ECD was improved in Japanese Patent Application Laid-Open No. 56-5594.
It is disclosed in the publication No. This is a drive circuit consisting of two TPTs (thin film transistors) and - capacitors connected to each EC pixel (not shown), and the TPT is turned on and off by scanning the capacitor according to image information. Rapid image display is achieved by latching and selectively energizing the EC pixels to start coloring all at once.

Problems to be Solved by the Invention First, the segment display type ECDI cannot be used as a behavior display device because it is difficult to display destination names and the like on a display device exclusively for digital numbers.

On the other hand, the dot matrix type ECDll can display various information such as time and destination name, and can be used as a single action display device.

However, the dot matrix type ECD11 consisting of a huge number of EC pixels 2a inevitably has a low yield;
It is not practical to create a behavior display device using Dll.

Means for Solving the Problems The invention according to claim 1 provides an action display device comprising at least a person name display section, a destination display section, and a time display section, in which the destination display section is formed of a dot matrix type electrochromic display. , the time display section is formed by a segment display type electrochromic display.

The invention as set forth in claim 2 is provided with erasing means for erasing the display content of a predetermined display section made of an electrochromic display in accordance with a set time.

By providing a destination display section consisting of an electrochromic display formed in a dot matrix method and a time display section consisting of an electrochromic display formed in a segment display method, each display section can be adjusted according to the content of the displayed information. Since the segment method and dot matrix method have been adopted as the display method, an increase in the number of pixels can be prevented without degrading the display function.

Since the various display sections are formed of electrochromic displays, the displayed information is maintained even if the power is turned off.

Furthermore, by providing an erasing means for erasing the display content of a predetermined display section made of an electrochromic display in accordance with a set time, it is possible to prevent misunderstandings from occurring due to past information being continuously displayed.

Embodiment An embodiment of the present invention will be explained based on FIGS. 1 to 7. Note that the same parts as those described in the conventional example described above are given the same names and numerals, and the description thereof will be omitted. First, this action display device 14 has a current date and time display section 15 at the top of the device.
is formed, and a destination display section 17, an internal/external display section 18, and a return time display section 19 are formed for each person's name display section 16 formed continuously below this.

The person's name display section 16 has a structure into which a card 20 on which a person's name is written can be inserted in a replaceable manner, and the destination display section 17 is formed of a dot matrix type ECD. Furthermore, the internal/external display section 18 has dot-shaped EC pixels 21 and 22 formed at each of the internal and external sections, and the return time display section 19 has an AM AM display consisting of an ECD with a segment display method of 16 divisions and 7 divisions. /PM display section 23
and a time display section 24. Similarly, the current date and time display section 17 has a 7-segment display format.
Month and date display section 25 and time display sections 26 and 16 consisting of a CD
It is formed by a day of the week display section 27 made of an ECD with a divided segment display method.

Furthermore, in the behavior display device 14 of this embodiment, the various display sections 15, 17 to 19 made of ECDs have a structure in which individually manufactured display panels and circuit panels are integrally joined. Therefore, the structure of these display sections 15, 17 to 19 will be explained below based on the destination display section 17 illustrated in FIGS. 2 to 5.

First, the display panel 28 of the destination display section 17 has a structure substantially similar to that of the ECDll illustrated in FIG. It is formed by screen printing, etc., and has minute protrusions. Further, in the display panel 28, a common electrode (not shown) is connected to the transparent electrode 4 from which the thin film layers 5 and 6 at predetermined positions are removed.

On the other hand, in the circuit panel 31, a connection pad 33 is formed on the surface of an insulating substrate 32 at a position facing the counter electrode 30 by etching aluminum or the like. These connection pads 33 are connected to a drive IC 34 attached to the back surface of the insulating substrate 32 through electrode wiring patterns 35 through through holes (not shown). The pattern 35 is covered with an insulating layer 36 formed on the surface of the insulating substrate 32. Further, the drive IC 34 includes a switching element (not shown) for each connected connection pad 33, and is connected to an interface (not shown) provided with a signal input terminal, a DC power supply connection terminal, etc. There is. Further, a common electrode formed on the surface of the insulating substrate 32 and connected to the transparent electrode 4 of the display panel 28 is connected to this interface. Note that, as illustrated in FIG. 5(a), the connection pad 33 has a shape expanded on the insulating layer 36 covering the electrode wiring pattern 35.

Therefore, in the destination display section 17, the counter electrode 30 and the connection pad 33 are connected with a conductive paste 37, and the display panel 28 and the circuit panel 31 are connected to each other using a sealing material 38 made of epoxy resin or the like. and the housing 39 are integrally joined.

In such a configuration, the behavior display device 14 is configured so that when the card 20 on which one person's name is written is inserted into the person name display section 16 as illustrated in FIG. ) to input display contents to the various display sections 17 to 19. Then, in this activity display device 14, the destination display section 17 displays the destination name in a dot matrix format, and the internal/external display section 18 displays the outing status by coloring and decoloring the two dot-shaped EC pixels 21 and 22. Then, the return time display section 19 displays the return time using a segment display method. Therefore, by viewing the behavior display device 14, the behavior status of each person can be confirmed.

In this behavior display device 14, on/off of a predetermined EC pixel 29 is latched by each switching element of the drive IC 34 in accordance with input display information, and each EC pixel 2
9 are energized at the same time, information can be displayed quickly.

In this behavior display device 14, the various display sections 17 to 19 as described above are composed of ECDs, so that the colors are clear, the viewing angle is large, and the visibility is good. Furthermore, E
The display units 17 to 19 consisting of CDs maintain the displayed information even if the power is turned off.
4 means that the displayed content will not be erased due to power outage, etc.
Low power consumption 0 For example, when calculating the power consumption of this behavior display device 14, the amount of charge required for coloring and decoloring the EC pixel 29 is 5.0 (mc/a#), so 1,0
5. 120 pieces that develop and fade in seconds. OX5.0(a)
The power consumption when driving the EC pixel 29 with the DC power supply 9 with a voltage of 1.5V is: 5, OX 1. OX 120 X O,5X O,5X
1.5 = 225 (mWsec).Moreover, this behavior display device 14 has each display section 17 to 19 formed by a segment display method and a dot matrix method depending on the content of display information, so that the display This prevents an increase in the number of pixels without degrading functionality, further reduces power consumption, and increases productivity.Moreover, in the behavior display device 14 of this embodiment, the display sections 17 to 19 made of ECD are The display panel 28 and the circuit panel 31 are formed by joining them together, which are manufactured individually.

The productivity of the equipment has been improved.

In addition, the behavior display device 14 of this embodiment is provided with a drive IC 34 that latches information in order to quickly display information on the display sections 17 to 19 made of ECD.
The present invention is not limited to the above structure, and can also be implemented with the drive circuit 12 of a conventional device, and in this case as well, since the number of pixels is small, information can be displayed relatively quickly.

According to the second aspect of the invention, the behavior display device 14 is provided with erasing means (not shown) for erasing the display contents of the predetermined display sections 17 to 19 made of ECD in accordance with a set time. It is also possible to provide one. In this case, for example,
By setting the display information on the destination display section 17 and the return time display section 19 to be erased at the end of the workday, it is possible to prevent misunderstandings from occurring due to continued display of information from the previous day.

Furthermore, by providing a preset function in the drive circuits of the display units 17 to 19 made up of ECDs, it is also possible to manufacture an activity display device in which display information for the following day can be set in advance.

Furthermore, since the behavior display device 14 has extremely low power consumption as described above, it is also possible to use a battery as the DC power source. In this case, the behavior display device 14
Since it can be made cordless, the behavior display device 14 manufactured to be operated wirelessly can be installed at a desired position, such as above a wall surface, as illustrated in FIG.

Furthermore, in the behavior display device 14 of this embodiment, the person name display section 1
6 is an example in which a card 20 with a person's name written on it is inserted, but this corresponds to the fact that the display contents of the person's name display section 16 are rarely changed. It is also possible to form a section (not shown).

Furthermore, in the behavior display device 14 of this embodiment, FIG.
), since the connection pads 33 are spread out on the insulating layer 36 covering the electrode wiring pattern 35, it is possible to form a dot matrix display section 17 with a small wiring pitch and high pixel density. For example, when the pixel pitch is 2.5 (tm), the width of the electrode wiring pattern 35 is 80 (μm) and the wiring pitch is 150 (μm).
), the gap between the wires is 70 (μm), so
It can be easily manufactured using current thin film technology. The present invention is not limited to the above structure, and connection pads can also be formed by removing the insulating layer 36 on the electrode wiring pattern 35, as illustrated in FIG. 5(b). In this case, the wiring density will be reduced, but the productivity will be improved, so it is suitable for driving circuits (not shown) of display sections 15, 19, etc. of the segment display method.

Effects of the Invention As described above, the present invention provides an action display device including at least a person name display section, a destination display section, and a time display section, which includes a destination display section made of an electrochromic display formed in a dot matrix format, By providing a time display section consisting of an electrochromic display formed in a segment display method, we have adopted either a segment method or a dot matrix method as the display method for each display section depending on the content of the displayed information, so that the display function can be improved. An increase in the number of pixels is prevented without degrading the number of pixels, and a behavior display device with good visibility and low power consumption can be manufactured with high productivity, and various display parts are made of electrochromic displays. Therefore, the displayed information is maintained even if the power is turned off, so the power consumption is low and the displayed content will not be erased due to a power outage. By providing a means of erasing the displayed content according to the set time, it is possible to prevent past information from continuing to be displayed and causing misunderstandings.
This has effects such as being able to manufacture a behavior display device that is easy to operate and highly practical.

FIG. 9 is a longitudinal side view, FIG. 10 is a plan view showing a second conventional example, FIG. 11 is a longitudinal side view, and FIG. 12 is a circuit diagram.

Claims (1)

[Claims] 1. An action display device comprising at least a person name display section, a destination display section, and a time display section, wherein the destination display section is formed of a dot matrix electrochromic display, and the time display section is formed of a dot matrix type electrochromic display. A behavior display device characterized by being formed using a segment display type electrochromic display. 2. The behavior display device according to claim 1, further comprising erasing means for erasing the display content of a predetermined display section comprising an electrochromic display in accordance with a set time.