JP2001333172A - Mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile phone by which a user can confirm characters and symbols on an LCD display to remind of a work before a backlight is put out and continue the work in the dark without the backlight so as to extend the available time of a battery. SOLUTION: The backlight 5 lights an LCD 3 from its rear side so that the user can recognize character data displayed on the LCD 3. A light guide plate 6 is a light supply path that uniformly supplies the light from the backlight 5 to the rear side of the LCD 3. A luminous paint layer 4 is interposed between the rear side of the LCD 3 and the front side of the light guide plate 6, the layer 4 may be applied to the rear side of the LCD 3, or to the front side of the light guide plate 6 or to both the rear side of the LCD 3 and the front side of the light guide plate 6. The luminous paint layer 4 may be applied to the rear side of the light guide plate 6. In this case, the thickness of the luminous paint layer 4 can be set independently of the luminous quantity of the light supplied from the front side of the light guide plate 6 to the rear side of the LCD 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone which can be used in a dark place without turning on a backlight.

[0002]

2. Description of the Related Art At present, the spread of mobile phones has been remarkable, and mobile phones have various functions such as clock, calculator, e-mail (e-mail), etc. It is starting to have. Also,
In order to fully demonstrate its functions even in dark places, LCD
(Liquid crystal device) It has a function called backlight that illuminates the display.

[0003] However, the backlight is usually turned off, and even if it is turned on, if the backlight is not used, the backlight turns off after a certain period of time. If the backlight is turned off, the LCD screen becomes invisible at night or in a dark place, so it is necessary to turn on the backlight by pressing any key.

[0004]

However, in the above-mentioned conventional portable telephone, there is no problem when the backlight is turned on, especially if no operation is performed. -There is a disadvantage that if you are in the process of creating mail or mail, if you tweak the key poorly, the work up to that point will be wasted.

In a conventional portable telephone, when a backlight is turned off after a certain period of time without pressing a key, there is no problem if the backlight is turned off. When creating an e-mail or e-mail, there is a problem that it is not possible to confirm what is displayed on the LCD display unit, and even if it is possible to confirm the key to be pressed next .

Further, a conventional portable telephone uses a backlight for illuminating (illuminating) the LCD display unit and keys with light. There is a disadvantage that the usable time of (battery) is reduced.

The present invention has been made under such a background. Characters and symbols on the LCD display can be confirmed so as to remind the user of the work before the backlight was turned off. Provided is a mobile phone that can perform determination, can continue work without any problem even if the backlight is turned off during work in a dark place, and can extend the usable time of a battery.

[0008]

According to the first aspect of the present invention,
LCD for displaying characters and symbols in mobile phones
And a light guide plate for uniformly supplying light from a backlight to the back surface of the LCD, and a layer of a luminous luminous paint interposed between the LCD and the light guide plate.

According to a second aspect of the present invention, there is provided the portable telephone according to the first aspect, further comprising a key for inputting data, wherein characters and symbols indicating respective functions are respectively indicated on the surface by luminous luminous paint. Features.

According to a third aspect of the present invention, in the portable telephone set of the first aspect, data is input in which luminous luminous paint is applied around characters and symbols indicating respective functions shown on the surface. A key is provided.

According to a fourth aspect of the present invention, in the portable telephone according to any one of the first to third aspects, the luminous luminous paint layer is applied to a back surface of the LCD. .

According to a fifth aspect of the present invention, in the portable telephone according to any one of the first to third aspects, the luminous luminous paint layer is applied to a surface of the light guide plate. I do.

According to a sixth aspect of the present invention, in the portable telephone according to any one of the first to third aspects, the luminous luminous paint layer is applied to both the back surface of the LCD and the surface of the light guide plate. It is characterized by having been done.

The present invention is characterized in that a luminous luminous paint is applied to the back of the LCD of a mobile phone or the surface of the light guide plate on the back of the LCD to provide a certain level of visibility even in a dark place.
Let it be D screen. At the same time, luminous luminous paint is used for the numbers and symbols of the keys of the mobile phone to improve the visibility and the operability in dark places.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing the appearance of a mobile phone K according to an embodiment of the present invention. In this figure, an LCD display unit 1 displays character data of a telephone number input by a key 2 and character data and symbol data of a mail or the like. By using the luminous luminous paint for the LCD display unit 1 of the mobile phone K, the backlight (LED: light emitting diode, etc.) 5 is turned on by the light emitted by the luminous luminous paint upon receiving the light and accumulating energy. Even if it is not performed, a certain degree of visibility is provided, and at the same time, the operability is also improved by using the luminous luminous paint for the numbers and symbols of the keys 2.

Here, numbers and symbols are shown on the respective surfaces of the keys 2 of the portable telephone K, and these numbers and symbols are written using a luminous luminous paint. Therefore, when the backlight is not turned on in a dark place, at night, or the like, the key 2 is made of a luminous luminous paint.
Can be determined, and the operability and visibility of the key 2 are greatly improved.

Next, the configuration of the LCD display unit 1 will be described with reference to FIG. FIG. 2 is a diagram showing the configuration of the LCD display unit 1.
3 is a sectional view taken along a solid line AA in FIG. LCD ・ 3
Is controlled by a control unit (not shown) to display character data. The backlight 5 illuminates (lights on the LCD 3 to make it easier to see the characters) from the back of the LCD 3 so that the user can recognize the character data displayed on the LCD 3. The light guide plate 6 is a light supply path that uniformly supplies the light emitted by the backlight 5 to the back surface of the LCD 3.

The luminous luminous paint layer 4 is sandwiched between the LCD 3 and the light guide plate 6, that is, inserted between the back surface of the LCD 3 and the surface of the light guide plate 6, LCD ・
3, it may be applied to the front surface of the light guide plate 6, or may be applied to both the back surface of the LCD 3 and the front surface of the light guide plate 6. At this time, the thickness of the luminous luminous paint layer 4 is set according to the amount of light supplied from the front surface of the light guide plate 6 to the back surface of the LCD 3. This light amount needs to be a value that allows the character data displayed on the LCD 3 to be recognized.

The luminous luminous paint layer 4 may be applied to the back surface of the light guide plate 3. In this case, the thickness of the luminous luminous paint layer 4 can be set without being influenced by the amount of light supplied from the front surface of the light guide plate 6 to the back surface of the LCD 3.

As described above, according to the present invention, the backlight 5 is formed by forming the luminous luminous paint layer 4 on the back surface of the LCD 3 used for the LCD display unit 1 of the mobile phone K. LCD display unit 1 even when not lit
To improve the visibility of character data displayed in a dark place.

According to the present invention, the LCD
3 is provided on the back surface of the light guide plate 6 for uniformly supplying light from the backlight 5 to the LCD 3 by forming a luminous luminous paint layer 4 on the surface of the light guide plate 6.
When the backlight 5 is not lit, the visibility of the character data displayed on the LCD display unit 1 in a dark place is improved.

Further, according to the present invention, the character data displayed on the LCD 3 and the characters and symbols shown on the surface of the key 2 can be clearly seen even in a dark place. If paint is present (especially LCD ・ 3
In this case, the lighting time of the backlight 5 can be shortened, which leads to a reduction in current consumption and a longer usable time of the battery.

As described above, one embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. The present invention is also included in the present invention. According to one embodiment, the luminous luminous paint layer 4 is formed by coating. However, as in the second embodiment shown in FIG. If there is a material, the LCD display unit 1 may be configured by sandwiching the material, for example, the fluorescent plate 7 between the LCD 3 and the light guide plate 6.

The place where the luminous luminous paint is used is written as a character or symbol of the key 2, but if there is a problem of visibility when searching for the presence of the mobile phone K, an emblem behind the mobile phone K is used. Part and antenna T (see Fig. 1)
For example, it may be used for a part of the mobile phone K. further,
Instead of using the luminous luminous paint for the characters and symbols written on the surface of the key 2, the luminous luminous paint may be applied around (around) the characters and symbols of the key 2.

[0025]

According to the present invention, by adding a luminous luminous paint layer between the LCD and the light guide plate, the backlight, which is the original purpose of the light guide plate, can be made uniform and the visibility in dark places can be improved. By simultaneously writing characters and symbols on the key surface with luminous luminous paint, it is possible to improve the operability and visibility of the key in a dark place.

According to the present invention, the character data displayed on the LCD and the characters and symbols shown on the surface of the key are:
If there is a luminous luminous paint with visibility that is clearly visible even in dark places, the backlight lighting time can be shortened, leading to reduction of current consumption and prolonging the usable time of the battery. Become.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an appearance of a mobile phone according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram illustrating a configuration of an LCD display unit according to an embodiment of the present invention.

FIG. 3 is a conceptual diagram illustrating a configuration of an LCD display unit according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LCD display part 2 key 3 LCD 4 Luminescent luminous paint layer 5 Backlight 6 Light guide plate 7 Fluorescent plate K Mobile telephone

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H088 EA22 HA28 HA30 MA01 MA20 5K023 AA07 BB04 BB21 HH01 HH07 MM01 MM07 MM24 QQ01 5K027 AA11 BB02 BB04 BB17 FF01 FF22 HH30 MM04 MM17 5K043 A04 KKA

Claims (6)

[Claims] An LCD for displaying characters and symbols, a light guide plate for uniformly supplying light from a backlight to the back surface of the LCD, and a luminous luminous paint interposed between the LCD and the light guide plate A mobile phone comprising: 2. The portable telephone according to claim 1, further comprising a key for inputting data, wherein characters and symbols indicating respective functions are respectively indicated on the surface by luminous luminous paint. 3. The mobile phone according to claim 1, further comprising a key for inputting data, each of which is coated with a luminous luminous paint around characters or symbols indicating respective functions shown on the surface. Phone. 4. The mobile phone according to claim 1, wherein a layer of the luminous luminous paint is applied to a back surface of the LCD. 5. The mobile phone according to claim 1, wherein a layer of the luminous luminous paint is applied to a surface of the light guide plate. 6. The mobile phone according to claim 1, wherein the layer of the luminous luminous paint is applied to both the back surface of the LCD and the surface of the light guide plate. .