JPH11249592A - Liquid crystal display device and precision equipment using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display permitting to easily change displays such as characters and figures according to user's preference and achieve various designing, and a precision equipment using that liquid crystal display device. SOLUTION: A negative film 3 on which a preferred picture, etc., are drawn is inserted into a slot 4 of a portable radio 1. When a backlight is turned off, the picture drawn on the negative film 3 is not displayed on a liquid crystal display board 2. When the backlight 6 is turned on, the picture drawn on the negative film 3 appears on the surface of the liquid crystal display board 2 by irradiating the liquid crystal unit with the backlight. Since the negative film 3 is easily replaceable, characters, pictures, etc., displayed on the liquid crystal display board can easily be changed. Thus, various designs of the portable radio 1 with a liquid crystal display is achievable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to easily change the display of characters, figures and the like according to the user's preference.
The present invention relates to a liquid crystal display capable of realizing various designs and a precision device using the liquid crystal display.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal display device has been used as a display. This liquid crystal display device mainly includes a liquid crystal unit including a liquid crystal cell and a reflector, and a light source. When the light source is turned on, the liquid crystal cell is illuminated from behind via the reflector. With this illumination, characters and the like appear on the screen of the liquid crystal display device along the electrode pattern for the display element, and the liquid crystal display device functions as a display.

In addition to the above-described method of displaying characters and the like on the screen of a liquid crystal display device, for the purpose of decoration, for example,
There are cases where characters, figures, paintings, and the like are desired to be displayed on the screen. In this case, there is a method of printing a figure or the like on the surface of a liquid crystal display panel serving as a screen of the liquid crystal display device using ink or the like. However, directly on the surface of the liquid crystal display panel with ink or the like,
In the method of printing a figure or the like, the figure or the like is always displayed on the screen regardless of whether or not the light source is turned on.

Therefore, a method of inserting a film on which a graphic or the like is drawn between the liquid crystal unit and the light source is used. According to this method, the film is sandwiched between the liquid crystal unit and the light source. In this state, screws are fixed from both sides of the liquid crystal unit and the light source and fixed. In the liquid crystal display device assembled in this way, when the light source is turned on, a figure drawn on the film is displayed. On the other hand, when the light source is not turned on, the figure is not displayed.

[0005]

In the above liquid crystal display device, the liquid crystal unit, the film, and the light source are integrally fixed. Therefore, the film cannot be replaced without disassembling the liquid crystal display device. Therefore, it is difficult for the user to easily change the figure drawn on the film.

The present invention has been made in view of the above circumstances, and has as its object the display of characters, figures, and the like can be easily changed according to the user's preference, and various designs are available. It is an object of the present invention to provide a liquid crystal display device capable of realizing the performance and a precision instrument using the liquid crystal display device.

[0007]

In order to solve the above problems, a liquid crystal display according to the present invention comprises a liquid crystal display, a light source for irradiating the liquid crystal display from behind, a liquid crystal display, and the light source. And a light-shielding means removably inserted between them. Therefore, the light shielding means is removably inserted. Therefore, by replacing the light shielding means, the user can easily change the characters and figures drawn on the light shielding means.

The precision instrument according to the present invention comprises a liquid crystal display means, a light source for irradiating the liquid crystal display means from behind, and a light shielding means detachably inserted between the liquid crystal display means and the light source. And a liquid crystal display device comprising: Therefore, by easily attaching and detaching the light-shielding means, it is possible to change a figure or the like displayed on the liquid crystal display means according to the user's preference. Therefore, various designs can be realized in one precision device having the liquid crystal display device.

It is desirable that the precision equipment be a portable radio equipment. Thus, even when the user carries the portable wireless device, the figure or the like displayed on the liquid crystal display means can be easily changed. Therefore, the fashionability of the portable wireless device can be improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a precision instrument having a liquid crystal display device according to a first embodiment of the present invention. A portable wireless device 1 is shown as an example of precision equipment. The portable wireless device 1 is provided with a liquid crystal display device according to one embodiment of the present invention. FIG. 1 shows a liquid crystal display panel 2 serving as a screen of the liquid crystal display device. The liquid crystal display panel 2 displays, for example, characters such as the telephone number of the caller.

A slot 4 is provided on a side surface of the portable wireless device 1. The slot 4 corresponds to a space provided between a liquid crystal unit 5 described later and a backlight 6 described later. The film 3 serving as a light shielding means is removably inserted into the slot 4.

FIG. 2 is a perspective view showing the liquid crystal display device. The liquid crystal display device includes a liquid crystal unit 5 as a liquid crystal display, a backlight 6 as a light source, and a film 3 as a detachable light shielding unit. Backlight 6
Are located behind the liquid crystal unit 5. Film 3
It can be removably inserted between the liquid crystal unit 5 and the backlight 6 in the direction indicated by the arrow 7. The liquid crystal unit 5 includes, for example, a liquid crystal cell (not shown) and a reflection plate (not shown).

The liquid crystal cell not shown is formed, for example, as follows. First, a liquid crystal material (not shown) is put between two transparent electrode substrates (not shown) that have been subjected to the alignment treatment. Next, a spacer (not shown) is sandwiched between the transparent electrode substrates to prevent a short circuit between the two electrodes. Then, the periphery of the transparent electrode substrate is sealed. Thereby, the liquid crystal cell is formed. The reflection plate (not shown) is used to efficiently reflect ambient light. As the backlight 6 as a light source, for example, a natural lamp, a fluorescent lamp, a thin electroluminescent (EL) panel, or the like is used.

Next, an operation using the portable wireless device 1 having the liquid crystal display device will be described. First, the film 3 on which a desired picture or the like is drawn is inserted into the slot 4 of the portable wireless device 1. When the backlight 6 is off,
As shown in FIG. 4, the picture drawn on the film 3 is not displayed on the liquid crystal display panel 2.

Next, a switch (not shown) of the portable wireless device 1 is turned on. When the switch is turned on, the backlight 6 is turned on. When the liquid crystal unit 5 is illuminated by the backlight 6, a picture drawn on the film 3 emerges on the liquid crystal display panel 2 as shown in FIG. Next, when the switch (not shown) of the portable wireless device 1 is turned off, the backlight 6 is also turned off. Since the image is no longer illuminated by the backlight 6, the picture of the film 3 displayed on the liquid crystal display panel 2 disappears.

According to the first embodiment, the film 3 is removably inserted between the backlight 6 and the liquid crystal unit 5. Therefore, since the film 3 can be easily replaced, characters, pictures, and the like displayed on the liquid crystal display panel 2 can be easily changed.

Further, characters, pictures, etc. displayed on the liquid crystal display panel 2 can be easily changed according to the user's preference. Therefore, various designs of the portable wireless device 1 having the liquid crystal display device can be realized. Further, even when the user carries the portable wireless device 1, it is possible to easily change the figures and the like displayed on the liquid crystal display panel 2. Therefore, the fashionability of the portable wireless device 1 can be improved.

FIG. 3 is a perspective view of a precision instrument having a liquid crystal display device according to a second embodiment of the present invention. The same members as those described in the first embodiment will be described with the same reference numerals. Portable radio 2 which is a precision machine
1 is provided with a lid 22 having the liquid crystal unit 5. The lid 22 can be opened and closed in a direction indicated by an arrow 28. FIG. 3 shows a state where the lid 22 is opened. The film 23 as the light shielding means can be detachably fitted on the backlight 6 along the direction indicated by the arrow 27.

The operation using the portable wireless device 21 will be described. First, the lid 22 of the portable wireless device 21 is opened in the direction of arrow 28. Next, the film 23 is fitted on the backlight 6 along the direction of the arrow 27. Next, the cover 22 is closed along the arrow 28, and a switch (not shown) of the portable wireless device 21 is turned on. When the switch is turned on, the backlight 6 is turned on, the liquid crystal unit 5 is illuminated, and the picture drawn on the film 23 appears on the liquid crystal display panel 2.

When the switch (not shown) of the portable wireless device 21 is turned off, the backlight 6 is turned off and the picture of the film 23 displayed on the liquid crystal display panel 2 disappears. According to the second embodiment, the same effects as those of the first embodiment can be obtained.

In the above embodiment, the portable radio devices 1 and 21 are used as precision devices, but the present invention is not limited to this.
Widely used for precision equipment having a liquid crystal display device, such as X, telephones, watches, etc.

Although the film 3 is used as the light-shielding means, the material is not limited to this, and any material may be used as long as it has a light-shielding property with respect to pictures and characters drawn on the surface, such as OHP sheets and cellophane. .

[0023]

As described above, according to the present invention, the display of characters, figures, and the like can be easily changed according to the user's preference, and a liquid crystal display capable of realizing various designs. It is possible to provide a device and precision equipment using the liquid crystal display device.

[Brief description of the drawings]

FIG. 1 is a perspective view of a precision instrument having a liquid crystal display device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a liquid crystal display device according to an embodiment of the present invention.

FIG. 3 is a perspective view of a precision instrument having a liquid crystal display device according to a second embodiment of the present invention.

FIG. 4 is a portable wireless device 1 when the backlight 6 is turned off.
FIG. 3 is a partial front view of FIG.

FIG. 5 shows the portable wireless device 1 when the backlight 6 is turned on.
FIG. 3 is a partial front view of FIG.

[Explanation of symbols]

1, 21: portable wireless device, 2: liquid crystal display panel, 3, 23: film, 4: slot, 5: liquid crystal unit, 6: backlight, 7, 27: arrow, 22: lid.

Claims (3)

[Claims] 1. A liquid crystal display, comprising: a light source that irradiates the liquid crystal display from behind; and a light blocking unit that is removably inserted between the liquid crystal display and the light source. Liquid crystal display device. 2. A liquid crystal display device comprising: liquid crystal display means; a light source for irradiating the liquid crystal display means from behind; and a light shielding means removably inserted between the liquid crystal display means and the light source. Precision equipment characterized by having: 3. The precision device according to claim 2, wherein the precision device is a portable wireless device.