JPH0634121B2 - Video tape recorder display - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device of a novel video tape recorder. More specifically, a display device in which a plurality of color polarizing plates and a plurality of liquid crystal plates are alternately laminated,
A novel video tape capable of always performing a display corresponding to the mode of the video tape recorder by switching the color polarizing plate and the liquid crystal plate to be displayed or the combination of the color polarizing plate and the liquid crystal plate to be displayed. It is intended to provide a display device for a recorder.

Background Art and Its Problems The video tape recorder originally has various functions, but it is required to further increase the kinds of functions. By the way, if the function is increased, the number of operation switches must be increased accordingly, and the number of displays showing the operation switches must be increased. On the other hand, the video tape recorder is required to be small and particularly thin, and it has been restricted to widen a front panel on which a display section and operation switches are arranged. Therefore, it is difficult to dispose all the necessary display units and operation switches in the front panel of the video tape recorder, and it is very difficult to meet the demand for abundant functions and thinning of the device.

Further, since the video tape recorder has many functions and the number of display and operation switches is large, there is a problem that it is easy to feel a mistake in operation or it is difficult to understand the correct operation method. Therefore, if you are not very familiar with the operation, you cannot operate the video tape recorder accurately and quickly, and especially those who are vulnerable to so-called mechanical and electric (many elderly people and women) cannot operate at all. Can be said to be the actual situation. This is a display that needs to be viewed or operated depending on the mode of the videotape recorder, a display that is always required in all modes, even though the operation switches are different, and all the operation switches are on the front of the videotape recorder at the same time. It is thought that this is due to the presence in the panel. That is, there are a reproduction mode, a recording mode, an answering machine setting mode, etc. as modes of the video tape recorder, and, for example, in the reproducing mode, for example, a channel setting switch, various switches for setting an answering machine, and the like. Since the display is present even though it does not need to be operated or viewed, there is a possibility that it will be operated by mistake, which is considered to be a major cause of misoperation. However, this has not been pointed out in the past, and accordingly no consideration has been given to it.

SUMMARY OF THE INVENTION Accordingly, the present invention is intended to provide a display device for a new video tape recorder which can always display in a mode corresponding to the mode of the video tape recorder. It is an object of the present invention to provide a novel display device for a video tape recorder in which switch plates are laminated and each switch element is associated with the above display to improve the operability.

In order to achieve the above object, the display device of the video tape recorder of the present invention comprises a plurality of color polarizing plates and a plurality of liquid crystal plates respectively interposed between the color polarizing plates,
Each color polarizing plate is transparent when no voltage is applied between the electrodes, and is made to transmit light of different colors when a voltage is applied, and one surface of each liquid crystal plate is a transparent common wiring film. Then, the other surface is covered with a transparent pattern wiring film having a predetermined shape, and when a driving voltage is applied, an electric field is generated between the pattern wiring film receiving the driving voltage and the common wiring film. A pattern wiring film that applies a drive voltage between it and the common wiring film can be selected so that only the portion has a light-shielding property, and various displays can be made on the liquid crystal plate by the transmitted light of the unshielded transparent portion. Between the electrodes of the plurality of sets of the color polarizing plate and the liquid crystal plate which are provided adjacent to each other and which are provided in the multicolor laminated liquid crystal portion. The voltage received -Providing a display unit that displays the color and shape of the set of the polarizing plate and the liquid crystal plate, and the pattern wiring film is selected according to the selection of the switch unit arranged in front of the display unit, and the operation of the display unit is performed. A display unit for displaying the selection state on the screen, in which a numerical value display area for displaying the running amount or time of the video tape, and the running amount of the video tape is displayed in the numerical display area. One switch display that displays the selection state of the switch unit that selects whether to display the time or the time, a playback switch display that displays the selection state of the switch unit that selects the playback mode, and a switch unit that selects the recording reservation mode. The recording reservation switch display that displays the selection status of the video tape is displayed. When the playback switch display is pressed, the switch display that displays the running amount of the video tape is selected and the number is displayed. The amount of video tape running is displayed in the display area, and when the recording reservation switch display is pressed, the switch display that displays the time is selected and the time is displayed in the numerical display area. It is characterized by that.

Embodiment Hereinafter, a display device of a video tape recorder of the present invention will be described in detail according to an embodiment shown in the accompanying drawings.

FIG. 1 is an exploded view of a display unit 1 mounted on the front panel of a video tape recorder.

Reference numeral 2 denotes a horizontally long plate-shaped transparent electrode switch plate having an internal structure as shown in FIG. The transparent electrode switch plate 2 is formed by laminating transparent wiring plates 3 and 4 at their peripheral portions with a rectangular frame 5 therebetween, and a transparent wiring film 6 is formed on the surfaces of the transparent wiring plates 3 and 4 facing each other. , 6, ... Are formed. 6a of the wiring films 6, 6, ...
Wiring films 6 to 6i are formed on the back surface of the transparent wiring board 3 on the front side and extend in the vertical direction, and are arranged at appropriate intervals from the left side to the right side. Among them, the wiring films 6e and 6f
Has a length corresponding to approximately one third of the width of the wiring board 3 extending from the lower end of the wiring board 3, and the remaining ones, that is, 6a to 6d.
And 6g to 6i have a length that substantially completely traverses the wiring board 3. Further, 6j to 6p are wiring films formed on the front side of the transparent wiring board 4 on the back side, and 6j, 6k, and 6l are wiring films extending from the left end to the right side of the transparent wiring board 4 from the upper side to the lower side. They are arranged at regular intervals. The length of the wiring film 6j on the upper side is set to be about one half of the length of the wiring board 4, and the length of the wiring film 6h is about one ninth of the length of the transparent wiring board 4. The length of the lower wiring film 6 is set to a length corresponding to about two-thirds of the length of the wiring board. 6m to 6p are wiring films extending from the right end to the left side of the transparent wiring board 4, each having a length corresponding to about one-third of the length of the transparent wiring board 4, and fixed from the upper side to the lower side. It is arranged at intervals. And
The wiring film 6a is orthogonal to the wiring films 6j, 6k, 6l when viewed from the front side, and the wiring films 6b, 6c, 6d are wiring films 6j and 6l.
The wiring films 6e and 6f are orthogonal to the wiring film 6l. Similarly, the wiring films 6g, 6h, 6i are orthogonal to the wiring films 6m, 6n, 6o, 6p, respectively.

By the way, the transparent wiring board 3 on the front side has appropriate flexibility, and when the finger is pressed from the front side, the portion that is bent and pushed contacts the wiring film 4 on the back side. . Therefore, when the transparent wiring board 3 is pushed at a position corresponding to an orthogonal position between the wiring films 6, 6, ... Of the transparent wiring board on the front side and the transparent wiring films 6, 6 ,. The wiring films 6 and 6 that intersect at the location come into contact with each other and are electrically connected.
Then, each of the intersecting portions when viewed from the front side of the wiring film 6 serves as a contact and functions as a switch element of the transparent electrode switch plate 2. The wiring films 6a to 6p are all connected to the input circuit of the microcomputer described later.

Reference numeral 7 denotes a transparent protective plate arranged on the back side of the transparent electrode switch 2, and when the transparent electrode switch plate 2 is pressed from the front side, the pressing force acts on a multi-color laminated liquid crystal part 8 on the back side which will be described later. It is to prevent the destruction of.

The multicolor laminated liquid crystal part 8 includes four color polarizing plates 9B, 9Y, 9
M and 9R and liquid crystal plates 10 ₁ , 10 ₂ , 10 ₃ interposed between the respective color polarization plates 9, 9, ..., 9B, 10 ₁ , as going from the front side to the back side. 9
They are arranged in the order of Y, 10 ₂ , 9M, 10 ₃ and 9R. The color polarizing plates 9B, 9Y, 9M and 9R are transparent when no voltage is applied between electrodes (not shown),
When a voltage is applied, 9B is blue, 9Y is yellow, 9M is milky white, and 9R is red. The liquid crystal plates 10 ₁ , 10 ₂ , and 10 ₃ are, for example, TN.
A (TWIST NEMATIC) type transparent wiring film is formed on both front and back surfaces. The wiring film on one surface is a common wiring film formed to cover substantially all of the surface, for example, ground. On the other hand, the pattern wiring film on the other surface is a large number and has a predetermined shape,
When a predetermined drive voltage is received between the ground and the ground, the portion between the pattern wiring film and the common wiring film receiving the drive voltage (that is, the portion where the electric field is generated) has a light shielding property. The portion of the liquid crystal plate 10 where the electric field is not generated is light transmissive. Therefore, by appropriately changing the pattern wiring film that applies a drive voltage to the common wiring film, it is possible to cause the liquid crystal plate 10 to perform various displays. In other words, this means that the display shape of the liquid crystal plate 10 can be changed depending on the content of the control signal given to the liquid crystal plate 10.

Also, the liquid crystal plate 10 to be displayed or the liquid crystal plate 1 to be displayed
The shape and color of the display obtained from the entire multicolor liquid crystal layer 8 by changing the combination of 0, 10, ... And changing the color polarizing plates 9, 9 ,. Can be changed more complicatedly.

Reference numeral 11 is a light guide plate disposed behind the multicolor liquid crystal unit 8,
It plays a role as a surface light source for obtaining display light. Reference numeral 12 denotes a lamp placement hole formed in a substantially central portion of one end surface of the light guide plate 11. A lamp 13 is placed in the lamp placement hole 12, and most of the light projected from the lamp 13 is guided. The display light travels through the light plate 11 and is reflected by the rear surface thereof toward the front surface to become display light that contributes to display.

FIG. 3 shows a control circuit 14 including a microcomputer provided in the video tape recorder.

In the figure, reference numeral 15 is a key input circuit, which is connected to the wiring films 6a to 6p of the transparent electrode switch plate 2 and is seen from the front of the transparent electrode switch plate 2 serving as a switch element (or switch contact). Wiring films 6, 6, ...
When a point where the two intersect each other is pressed, a corresponding key input signal is input to the key input circuit 13. Reference numeral 16 denotes a mode discriminating circuit which, when receiving a signal from the key input circuit 15, discriminates what state the system of the multi-layer liquid crystal display 8 and the video tape recorder should be made in accordance with the content of the signal. Reference numeral 17 denotes a liquid crystal control circuit, which takes in a signal relating to the multicolor laminated liquid crystal unit 8 from the discrimination signal from the mode discrimination circuit 16 and generates a control signal for controlling the multicolor laminated liquid crystal unit 8 and outputs it to the control circuit 14 external. To the liquid crystal drive circuit 18. Reference numeral 19 denotes a system control circuit which takes in a signal relating to the state of each part in the video tape recorder from the discrimination signal from the mode discrimination circuit 16 and sends a control signal to each part in the video tape recorder. An oscillator 20 generates a control clock pulse for controlling each circuit in the microcomputer. In addition to the clock pulse, a low-frequency clock pulse for driving the liquid crystal is also generated and sent to the liquid crystal drive circuit 18.

The operation of the display device shown in FIGS. 1 to 3 will be described below with reference to FIGS. 4 (A) to 4 (F), which are front views of the display unit arranged on the front panel of the video tape recorder.

(A) "AC Outlet Off Mode" When the plug of the power cord (not shown) of the video tape recorder is not inserted into the AC outlet, that is, in the "AC outlet off mode", the display unit 1 is shown in FIG. As shown in A), no particular display is made. It should be noted that the "AC" is formed on the display unit 1 arranged on the front panel by forming a contour (shown by a chain double-dashed line) of a numerical value display area 21 showing numerical values such as time or remaining tape amount by means such as printing. The display unit 1 in the "outlet off mode" may be decorated.

(B) "AC Outlet On Mode" When the power cord is plugged into an outlet, that is, in the "AC outlet on mode", the control circuit 14 including the microcomputer receives the power supply voltage and enters the initial state. . Then, the multi-color laminated liquid crystal unit 8 controlled by the liquid crystal control circuit 17 via the liquid crystal drive circuit 18
In the initial state, is displayed as shown in FIG. 4 (B).

That is, for example, a control voltage is applied to the red or blue color polarizing plate 9R or 9B and the milky white color polarizing plate 9M to transmit red or blue light and milky white light. Then, by giving a control signal having a predetermined content to the liquid crystal plate 10 ₃ or 10 ₁ and the liquid crystal plate 10 ₂ , respectively, a power switch display 22 showing a power switch on a milky white background and a four-digit time display , And the numbers 25, 25, ... Of “1” to “12” for displaying the channels in the channel arrangement area 24. The power switch display 22 is arranged at a position corresponding to the contact point between the transparent wiring films 6j and 6b shown in FIG. Also, originally, the numbers 25, 25, ..., "1" to "12" for channel display are transparent wiring films 6g, 6h, 6i and transparent wiring film 6m, respectively.
It is arranged at a position corresponding to each contact with 6n, 6o, and 6p. The numerical value display area 21 in which the numbers 23, 23, ... Are displayed is located above the wiring films 6e and 6f when viewed from the front.

When the control circuit 14 is in the initial state, it starts ticking the time,
The time is displayed by the numbers 23, 23, ... In the numerical area 21. The wiring films 6g, 6h, 6i and the wiring films 6m, 6n, which are originally associated with the numbers 25, 25, ...
Each of the contacts 6o and 6p functions as a switch for adjusting the time, and the time can be adjusted by pushing an arbitrary numeral 25 in an appropriate sequence.

The wiring film 6 corresponding to the power switch display 22
The contact point between j and the wiring film 6b is designed to function as a power switch. When the portion of the display 22 is pushed, the contact point is closed, and as a result, the power-on mode is set.

(C) “Power-on mode” As described above, when the power switch display 22 is pushed to enter the “power-on mode” in the AC outlet on mode, the display as shown in FIG. 4 (C). Appears. Specifically, the power switch display 22, the number 23,
23, ..., Numerical values 25, 25, ... disappear, and the reproduction switch display 26, “RE”, “PLAY” is displayed at the position corresponding to each contact point between the wiring film 6a and the wiring films 6j, 6k, 6l.
Recording switch display 27 called "C" and "TIMER R"
An answering machine setting switch display 28 of "EC" appears.
The respective displays 26, 27, 28 are different in color so that they can be distinguished by color, for example, the reproduction switch display 26 is green, the recording switch display 27 is red, and the recorded message setting switch 28 is blue. There is. This is because all the color polarization plates 9B, 9Y, 9M and 9R receive the control voltage to transmit blue, yellow, milky white and red light, respectively, and the liquid crystal plates 10 ₁ , 10 ₂ and 10 _{3 are also provided.} Are displayed in a predetermined shape, that is, all the polarizing plates 9B, 9Y, 9M and 9 are displayed.
It is realized by the functions of R and all the liquid crystal plates 10 ₁ , 10 _2, and 10 ₃ . In addition, the green display is the blue color polarizing plate 9
This is performed by utilizing the principle that the light that has passed through the B and yellow color polarizing plates 9Y becomes green. That is, in the portion corresponding to the reproduction switch display 26, the color polarizing plate 9B
And 9Y receive the voltage, only the color polarizing plate 9R receives the voltage in the portion corresponding to the recording switch display 27, and only the color polarizing plate 9B receives the voltage in the portion corresponding to the answering machine setting switch display 28. Only the polarizing plate 9M receives the voltage in the portion corresponding to the portion.

The contact between the wiring films 6a and 6j (see FIG. 2) of the transparent electrode switch plate 2 serves as a reproduction switch, the contact between the wiring films 6a and 6k serves as a recording switch, and the wiring film 6 is provided.
A state in which the contact between a and 6l functions as an answering machine setting switch is realized by the function of the control circuit 14. Then, when the reproduction switch display 26 of the display unit 1 is pressed, the reproduction mode as shown in FIG. 4D is entered, and when the recording switch display 27 is pressed, the recording as shown in FIG. When the recording switch display 27 is pressed in the mode, the absence recording setting mode as shown in FIG.

(D) "Play Mode" When the play switch display 26 is pressed to enter the play mode,
As described above, the display as shown in FIG. 4 (D) appears. Each display is displayed in green in a rectangular frame. In this mode, the background color and display color are, for example, green, and each display is located in each rectangular colorless or milky white frame. A display, for example a liquid crystal panel 10 ₂ when such reproduction mode, a polarizing plate 9B,
9Y or 9B, 9Y, and 9M are operated. By the way, 29 is the rewind switch display, 30
Is the playback start switch display, 31 is the fast forward switch display,
32 is an eject switch display, 33 is a stop switch display, 34 is a pause switch display, 35 is a counter switch display, and 36 is a tape remaining amount switch display. The contacts existing at positions corresponding to these displays are indicated by the display. Function as a switch. When the counter switch shown by the display 35 is turned on, the running amount of the video tape is displayed by the numbers 23, 23, ... In the numerical display area 21, and the tape remaining amount switch shown by the display 36. When is turned on, the above number 2
The remaining amount of the video tape is displayed by 3, 23, ....

In addition, the recording switch display 27 that appears in the power-on mode
The area where the answering machine setting switch display 28 is formed is green as the background color. Further, in the reproduction mode, since the channel is unnecessary, the numbers 25, 25, ... In the channel display area 24 are not displayed.

(E) "Recording mode" When the recording mode is set, a display as shown in Fig. 4 (E) is performed. In this mode red by operating the polarizing plate 9R background color and the display color, and switches the liquid crystal panel to be displayed on the 10 _3. And when in playback mode (4th
At the position where the rewind switch display 29 appears in FIG. (D)), the television with the characters "TV / VTR" is displayed.
The video changeover switch display 37, the recording start switch display 38 at the position of the reproduction start switch display 30, and the “RECMODD” at the position of the fast-forward switch display 31 also.
A tape traveling speed changeover switch display 39 composed of the letters "EβII / βIII" appears, and the contents of the display at the same position are changed over. Along with that, the function of each contact of the transparent electrode switch 2 corresponding to the display as a switch is switched by the action of the control circuit 14. However, there is no such change in the displays 32 to 36 that are commonly required in the reproduction mode and the recording mode. In addition, in this recording mode, it is necessary to specify the channel,
The numbers 25, 25, ... In the channel display area 24, which are not displayed in the reproduction mode, are displayed. Further, the entire formation area of the reproduction switch display 26 and the recorded message setting switch display 28 is made red as a background color.

By the way, the television / video changeover switch indicated by the display 37 is for changing over whether to record a broadcast program received by the television receiver or a broadcast program (a so-called back program) received by the tuner in the video tape recorder. In addition, the tape running speed changeover switch indicated by the display 39 changes the running speed of the video tape at the time of recording, and the switching result is the numbers 23, 23, ...・ The upper part of “βI
It is indicated by the symbol 40 "I" or "βIII".

(F) "Voice record setting mode" When the voice mail setting mode is entered, a display as shown in Fig. 4 (F) appears. In this case, the color of the background color and displayed in blue by operating the polarizing plate 9B, also to the liquid crystal plate 10 ₁ in the display state. By the way, 41 is "TUR
In the start time setting switch display consisting of the characters "N ON", the start time setting switch indicated by the display 41 is pressed before the recording start time is set. Four
2 is a setting / cancelling switch display consisting of the characters "ON / OFF", and the switch indicated by the display 42 sets the answering machine setting after the end of the operation of setting the recording start time and the recording end time. It is for specifying whether to perform or cancel the setting. Reference numeral 42 denotes a recording end time setting switch display composed of the characters "TURN OFF", and the recording end time setting switch indicated by the display 42 is pressed before the recording end time is set. "DAY", "HOU
Each indication 43, 44, 45 and 46 consisting of the letters "R", "10MIN" and "MIN" is displayed before the start and end dates, hours, minutes and tens of minutes of the recording are designated. This shows a switch to be pushed. Then, specific numerical values for the tens and ones of the day, hour, minute are designated by pressing the portions corresponding to the numerical values 25, 25, ... In the channel display area 24, for example. Incidentally, in the absence recording setting mode, the entire area where the reproduction switch display 26 and the recording switch 27 are formed is blue as the background color.

As described above, according to the illustrated display device, the liquid crystal plate 10 to be displayed or the combination of the liquid crystal plates 10 to be displayed is switched according to the mode of the video tape recorder, and each of the transparent electrode switch plates 2 is switched. The function of the switch contacts can also be switched so that only the display elements required for the current mode and the switch element consisting of the contacts can be present on the front panel. Therefore, even if the front panel is narrow, the functions given to the video tape recorder can be abundant, and it is possible to sufficiently meet the two requirements which are originally in a trade-off relationship, that is, the abundance of functions and the miniaturization of the apparatus, especially the thinness. it can.

Further, since it is possible to make only the displays and switches necessary for the mode at that time exist and not make unnecessary ones exist, there is little room for erroneous operation and operability can be improved. Then, the color polarizing plate 9 to be operated (or a combination of the color polarizing plates 9 to be operated) is changed by changing the mode and the color of the background is changed. Therefore, depending on the color, the mode of the video tape recorder can be changed. It is possible to sensuously grasp, and it is possible to avoid erroneous recognition of a mode or an operation error based on it.

As described above, the display device of the videotape recorder of the present invention comprises a plurality of color polarizing plates and a plurality of liquid crystal plates interposed between the respective color polarizing plates. The plate is transparent when no voltage is applied between the electrodes, and is made to transmit light of different colors when a voltage is applied, and one surface of each liquid crystal plate is a single transparent common wiring film for almost the entire surface. The other surface is covered with a transparent pattern wiring film having a predetermined shape, and when a driving voltage is applied, only a portion where an electric field is generated between the pattern wiring film receiving the driving voltage and the common wiring film. It is possible to select a pattern wiring film that applies a drive voltage between the common wiring film and the common wiring film so as to have a light-shielding property, so that various displays can be made on the liquid crystal plate by the transmitted light of the transparent portion which is not shielded. To A voltage is applied between the electrodes of the plurality of sets of the color polarizing plate and the liquid crystal plate which are provided in the multicolor laminated liquid crystal part and are arranged adjacent to each other. The display unit is provided with the color and shape of the set of the color polarizing plate and the liquid crystal plate, and the pattern wiring film is selected according to the selection of the switch unit arranged on the front surface of the display unit to operate the display unit. A display unit for displaying the selection state on the screen, in which a numerical value display area for displaying the running amount or time of the video tape, and the running amount of the video tape is displayed in the numerical display area. Whether to display the time or the time is displayed. One switch display that displays the selection status of the switch section, a playback switch display that displays the selection status of the switch section that selects the playback mode, and a switch that selects the recording reservation mode. When the playback switch display is pressed, the switch display that shows the running amount of the videotape is selected and the numerical display area displays the videotape of the videotape. When the running amount is displayed and the recording reservation switch display is pressed, the switch display for displaying the time is selected and the time is displayed in the numerical display area. is there.

Therefore, according to the present invention, it is not necessary to provide unnecessary display or switch elements at each time, and it is possible to reduce the kinds and number of displays required at one time and the number of switch contacts. Therefore, it is possible to significantly reduce the area of the display area with respect to the abundance of functions of the video tape recorder and reduce the possibility of erroneous operation.

[Brief description of drawings]

The drawings show an example of the embodiment of the display device of the video tape recorder of the present invention. FIG. 1 is an exploded perspective view of the display device,
FIG. 2 is an exploded perspective view of the transparent switch plate, FIG. 3 is a block diagram showing a control circuit of the display device, and FIGS. 4 (A) to 4 (F) show display contents according to a change in mode of the video tape recorder. It is a front view of a display device showing changes in order. Explanation of reference numerals 1 ... Display section, 8 ... Multicolor laminated liquid crystal section, 9 ... Color polarizing plate, 10 ... Liquid crystal plate, 21 ... Numerical value display area, 26 ...
... playback switch display, 28 ... recording reservation switch display,
35, 45 ... Switch display for displaying the selection state of the switch section for selecting whether the running amount of the video tape or the time is displayed in the numerical display area

Claims (1)

[Claims] 1. A plurality of color polarizing plates (9) and a plurality of liquid crystal plates (10) interposed between the respective color polarizing plates.
Each of the color polarizing plates is transparent when no voltage is applied between the electrodes and is made to transmit light of a different color when a voltage is applied, and one surface of each liquid crystal plate is transparent. The common wiring film covers almost the entire surface and the other surface is covered with a transparent pattern wiring film having a predetermined shape. A pattern wiring film that applies a driving voltage between the common wiring film and the common wiring film can be selected so that only the portion where the electric field is generated has a light-shielding property. A plurality of sets of the color polarizing plate and the liquid crystal plate, which have a multi-colored laminated liquid crystal part (8) capable of displaying and are arranged adjacent to each other prepared in the multi-colored laminated liquid crystal part. From that out A display section (1) for displaying the color and shape of a set of a color polarizing plate and a liquid crystal plate which receives a voltage between electrodes is provided, and a switch section arranged in front of the display section is selected according to the selection. A display unit for selecting a pattern wiring film and displaying the selection state on the operation surface of the display unit, wherein the display unit has a numerical display area (21) for displaying the running amount or time of the video tape, One switch display (35, 45) for displaying the selection state of the switch section for selecting whether the running amount of the video tape or the time is displayed in the numerical display area, and a switch section for selecting the reproduction mode. And a recording reservation switch display (28) that displays the selection state of the switch section that selects the recording reservation mode. When the reproduction switch display is pressed, When the switch display that shows the running amount of the video tape is selected, the running amount of the video tape is displayed in the numerical display area, and when the recording reservation switch display is pressed, the switch display that shows the time is displayed. Display device of video tape recorder characterized in that the time is displayed in the numerical display area when selected