JPH03127546A - Display device - Google Patents

Abstract

PURPOSE:To display the operating state and standby state simply and effectively for a user by providing a half mirror to a lower part of a liquid crystal polarization plate panel and a lighting means lighting upward to the lower part. CONSTITUTION:A liquid crystal panel is used for a display device, a half mirror 19c is arranged to the lower part of a liquid crystal polarized plate 19b and a back light lighting means 19d is used for the lower part. When a facsimile equipment is in standby at application of power, the LDD liquid crystal polarized plate 19b displays time or various status error information. In this case, since the back light 19d connects to a main power supply, it is not lighted in the standby power supply and an external light is read as a light beam A by a half mirror 19c. Moreover, in the redial standby, a word representing the respective state is displayed on the liquid crystal polarized plate 19b and a back light lighting 19d is lighted to observe a light beam shown in one-dashed chain lines B. Thus, the display is observed brighter than the usual state in the operation/standby state and the state is discriminated from the usual display state.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a display device that uses a liquid crystal polarizing plate to display the operating status of a facsimile machine.

(Prior Art) Liquid crystal panels have conventionally been used to display the status of devices such as facsimile machines. Furthermore, in recent years, facsimile machines with built-in memory have increased, and conventionally, the document would be in motion at f3. Alternatively, the document is placed on the document table and the dial is waiting. Also, if reception was in progress, the recording paper was coming out, etc. - it was possible to clearly identify the situation with the naked eye. However, with a built-in memory machine, the information of the transmitted document is stored in the memory, and then the machine automatically sends it to the line.When receiving, the information is stored in the memory at high speed, and then the information is slowly recorded and output later. Therefore, it is configured as follows.

[Problems to be Solved by the Invention] With the above-mentioned judgment criteria in the conventional example, it is not possible to accurately determine whether the machine is transmitting or receiving data. In some cases, a! & If you accidentally press the stop button while the machine is transmitting or receiving automatically, the transmission or reception may be interrupted, or you may accidentally perform various operations without knowing that there is information in the memory. It had drawbacks such as erasing memory.

For this reason, conventionally, when the device is transmitting, receiving, storing information in memory, or waiting for redial, an LED or lamp is illuminated to display a message such as "IN USE: r operation/standby." Therefore, we take measures to warn users.

However, facsimile machines often have other operation modes such as automatic reception/manual reception switching, and there are many LEDs and lamps that are always on, making it difficult to distinguish instantly and using a dedicated large lamp, which increases power consumption. There were also drawbacks. Also,
A liquid crystal display usually has a structure in which a reflective plate is provided on the lower surface of a liquid crystal polarizing panel, and natural light passes through the polarizing plate and is reflected by the reflective plate. Furthermore, in order to make the display easier to see than the reflector type, a backlight may be used instead of the reflector. However, in this case, there is no visibility due to reflected light, so it is not an operating state, but a standby state (
At this time, the display (mostly the time, document presence/absence, recording paper presence/absence, and other error indications) also requires backlighting at all times, which has the disadvantage of increasing power consumption during standby. was there.

(Means for Solving the Problems (and Effects)) According to the present invention, a liquid crystal panel is used as a display device, a half mirror is disposed below the liquid crystal polarizing plate, and a backlight illumination means is further provided below the liquid crystal polarizing plate. By using this, the above-mentioned drawbacks have been eliminated, and the device is easy to use and consumes less power.

Further, by printing pictographs and characters outside the polarized display area on the front or back surface of the liquid crystal polarizing plate, the device is more convenient to use and requires less erasing power.

(Embodiment) FIGS. 1 and 2 show a perspective view and a central sectional view of a facsimile machine embodying the present invention.

In FIGS. 1 and 2, 1 is a transmission document, 2a is a document table, 2b is an auxiliary tray for expanding the document table, 3a,
3b is a left and right document width determining guide (slider), 4 is a preliminary conveyance roller, 5a is a separation piece, 5b is a separation roller, 6a
is a paper feed roller, 6b is a paper feed roller, 7a is a paper ejection roller, 7
b is a paper ejection roller, 8 is a light source, 9 is a mirror, 10 is a reduction lens, 11 is a light receiving element, 12 is a platen roller, 13 is a thermal head, 14 is a roll paper for recording, 15 is a cutter,
16 is a recording paper reversing tray, and 17 is a recording paper outlet.

18 is an operation panel. 18a is 16 keys that serve as 10 dial keys and one-touch keys. 18b is a start key. 18c is a stop key. 18d is a switching key for fine mode/standard mode, etc., 18e is a function key for halftone, etc., and 18f indicates the operating status. The operating/standby LED display 19 is a display such as an LCD (liquid crystal), which displays the time, transmitting/receiving optical telephone numbers, and the status of the device.

Next, the operation of the facsimile machine will be briefly explained using FIGS. 1 and 2.

The document 1 is conveyed in the six directions of the arrows by a document conveyance means consisting of 4 to 7 roller pairs, is illuminated by a light source 8, and is inputted to a light receiving element through a reflective optical system using a mirror 9 and a lens 10 to obtain an electrical signal. . The obtained electrical signal is output to a telephone line through an electrical circuit (not shown) and a modem. The received electrical signal is converted into a thermal signal by the thermal head 13. As the platen roller rotates in the direction of arrow a, the recording paper 14 is ejected while recording in sequence, and is transferred to the reversing tray 16.
The paper is then turned around, ejected from the ejection port, and loaded.

FIG. 3 is a perspective view of an operation panel according to an embodiment of the present invention.

18a, telephone key (10 key) for dialing and *, # key 18a, group broadcast key, 18a3
is redial/tone pulse switching key tab is start key 18c is stop key 186 is automatic reception/manual reception, standard/dark<, standard/fine switching slide sw
, 18e is a dial, abbreviation, hold, function, halftone, and telephone reservation key. 18f is an LED display indicating the dial, halftone, and telephone reservation status.

19a is the LCD display protective cover (Ex, transparent acrylic plate), 19b is the liquid crystal polarizing plate, 19c is the half mirror 11
9d is an illumination means, for example EL.

(Electric Luminescence), LED array
This is a cold cathode tube such as an XE tube.

FIG. 4 is a simplified sectional view of the above-mentioned LCD (liquid crystal) display. Reference numeral 19b denotes a liquid crystal polarizing plate, and the portions indicated by thick lines are portions through which light rays do not pass. Reference numeral 19c is a half mirror, which is deposited on the upper surface in the embodiment. 19d is a backlight illumination means, and the figure shows an LED array. 19d
, is an LED array, and 19d2 is a diffuser plate. 19e
is LCD and LED drive printed board, 19f is LCD1
An elastic connector 19g that electrically connects the printed circuit board L9f and the elastic connector 19g is a housing of the LCD unit, and is, for example, a metal frame that presses and fixes the LCD polarizing plate 19b from above onto the PCB 19e.

Next, in the above configuration, the facsimile machine
Turned on and in standby state ((Note) Written by wJ/Waiting in standby means memory accumulation, which is different from this meaning)
When the LCD is on, the LCD polarizer displays the time or the various status information mentioned above. At this time, since the backlight is on the main power supply, it is not illuminated by the standby power supply in the standby state, and the half mirror 19c is used to illuminate the backlight as shown in Figure 4.
To make it possible to read external light like light ray A.

Also, after receiving the original, the start button was pressed and the transmission was in progress, or the dial key was pressed to make a call. Currently receiving. Image information was stored in memory. During redial standby, words indicating each status are displayed on the LCD (r4 light board) and the backlight is turned on. At this time, as shown in Figure 4,
You can see the rays of light. Therefore, during operation/standby, the display can be seen brighter than usual, and it is possible to distinguish it from the normal display state.

FIG. 5 is a diagram showing details of the LCD according to the invention.

Here, 19b indicates a commonly used 20-digit, 2-line LCD polarizing plate display section (numbers, letters, and special symbols/characters can be displayed).

Reference numeral 19b2 is a text/frame indicating "operating/standby" printed on the front or back side of the liquid crystal polarizing plate panel 19b. This notice is inconspicuous when there is no backlight illumination.

FIG. 6 is a block diagram showing the circuit configuration of the display device of this example. In the figure, 18 is an operation key including the various keys mentioned above, and t9-1 is an LCD for driving the LCD 19.
A driver 19-2 is a backlight driver for driving the backlight 19d, and 20 is a cp for controlling the display.
u (composed of a microcomputer, ROM, RAM, etc.), 21 is a driver I for outputting control signals for the LCD driver 19-1 and backlight driver 19-2, and 22 is for storing display information, etc. 23 is the other Ilo including the telephone line, modem, internal motor, etc.

Based on the above configuration, the control flow of the CPU 20 of this embodiment is shown in FIG. 7. Hereinafter, the control operation of the CPU 20 will be described based on the flowchart of FIG. 7.

First, step S1. In S2, the presence or absence of key power from the operation key 18 and the presence or absence of an incoming signal from l1023 are monitored, and if there is key power, steps S1 to S6 are performed.
If there is an incoming call from the other party, the process goes from step S2 to step S.
Proceed to step 3.

When proceeding to step S3, the backlight 19d is turned on,
In step S4, automatic reception and telephone ringing are controlled, and thereafter facsimile communication or phone calls are controlled. Then, the facsimile communication or telephone call ends (step 541).
Then, the backlight 19d is turned off and step S14:
return.

On the other hand, when proceeding from Step S1 to Step 5611, the backlight 19d is turned on, and in Steps 57S8 and 39, it is determined whether the key human input signal is a transmission command, a reception command, or a copy command, and if it is a transmission command, the steps are performed from Step S7. The process advances to S12, and if it is a receive command, the process advances from step S8 to step S10, and if it is a copy command, the process advances from step s9 to step 311.

When the process proceeds from step S8 to step 310, the reception is displayed and the reception operation is controlled, and when the reception is completed (step 542), the process proceeds to step S5.

Further, when the process advances from step S9 to step S11, copying is displayed and the copying operation is controlled, and when the copying is completed (
Step 543) Proceed to step S5.

Further, when the process proceeds from step S7 to step S12, it is determined whether or not the memory transmission mode is set, and if it is not the memory transmission mode, the number of the other party is dialed at step S13,
The image is transmitted in real time while reading the original, and when the transmission is completed (step 514), the process advances to step S5. Also, if it is the memory transfer mode 3, the process advances to step S15;
reads the original and stores the read image in the memory 22;
When the document reading is completed, the dial will be dialed. Then, in step 516, it is determined whether the other party has responded (whether the other party is busy or not), and the other party has responded (not busy).
In this case, the image in the memory 22 is transmitted in step S17,
When the transmission is completed (step 818), the process advances to step S5. If the other party does not respond (is busy) in step S16, redial standby is performed in step S19,
In step S20, it is determined whether or not the standby time has elapsed. When the redial standby time has elapsed, dialing is performed again and the process proceeds to step S316.

[Other Examples] In the above embodiment, the half mirror was made by vapor deposition, but the material may be glass or acrylic, and the vapor deposition surface may be either the front or back surface, and any material having half mirror characteristics may be used. , not necessarily vapor deposits. Further, the backlight light source may be a hot cathode tube such as an EL, an LED, a cathode tube, or a fluorescent lamp.

Further, the effect can be further enhanced by using colored lights such as red, orange, yellow, etc. to call attention to the backlight illumination during operation/standby.

In this example, a plan was shown in which the caution was silk-printed on the front or back side of the liquid crystal polarizing plate, but this caution could also be printed on the back of the half mirror, or a sticker-like material could be inserted. good. That is, it is only necessary to insert the transmissive display material above the backlight light source, and if it is located below the vapor deposition surface of the half mirror, it does not need to be seen from the display surface when the backlight is turned off.

〔Effect of the invention〕

As explained above, by using a display device in which a liquid crystal polarizing plate, a half mirror, and a backlight illumination source are sequentially assembled, the above-mentioned operating/standby status can be easily and effectively communicated to the user. It is now possible to display. Furthermore, in conventional LCD displays with backlighting, the capacity of the standby power supply is large, but according to the present invention, it is possible to reduce the power consumption during standby, and it is possible to provide a device with low running costs. Can be done.

In addition, by using a display in which a liquid crystal polarizing plate, a half mirror, and a backlight illumination light source are sequentially assembled and a caution display using other transparent members is inserted, the above-mentioned operation/standby state can be easily detected and the light emitted. It has become possible to effectively display the information to the user using colors and notes. Furthermore, in conventional LCD displays with backlighting, the capacity of the standby power supply is large, but according to the present invention, it is possible to reduce the power consumption during standby, and it is possible to provide a device with low running costs. can.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the device main body of this embodiment, Fig. 2 is a sectional view of the device main body of this embodiment, Fig. 3 is a perspective view of the entire operation panel, and Fig. 4 is an LCD (liquid crystal) The cross-sectional view of the display device, Figure 5, is as follows:
A perspective view of the LCD display, FIG. 6 is a block diagram showing the circuit configuration, and FIG. 7 is a C
It is a flowchart figure which showed the control operation of PU20. 19b...Liquid crystal polarizing plate 19c...Half mirror 19d...Backlight illumination light source 19b,...20-digit, 2-line display part (based on liquid crystal polarizing plate) 19b2...Caution silk-printed on liquid crystal polarizing plate calligraphy part

Claims (2)

[Claims] (1) A display device for displaying the operating status of a facsimile, etc., which has a half mirror below a liquid crystal polarizing plate panel, and has an illumination means further below the half mirror for illuminating the upper side. (2) A display device for displaying the operating status of a facsimile, etc., which has a half mirror at the bottom of the liquid crystal polarizing plate panel, and further has illumination means below the half mirror for illuminating the upper side of the liquid crystal polarizing plate. A display device characterized by having a printed portion of characters or pictograms in an area outside the liquid crystal polarization display portion on the back or front surface.