JP2002271470A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus in which the cost and power consumption of a backlight are reduced. SOLUTION: One ends of a first light guide plate 223 and a second light guide 225 are brought close to an LED 222, the other end of the first light guide plate is located on the rear side of a second display section 224, the other end of the second light guide plate is located on the surface side of the second display section 224, and a lamp window 240 indicating an incoming call is disposed above the second light guide plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic equipment.

[0002]

2. Description of the Related Art A portable telephone device is one of electronic devices (for example, telephone devices).

FIG. 7 is a front view of a conventional portable telephone device.

The telephone device shown in FIG.
And a display unit 620 including, for example, a liquid crystal display device, and an LED (Light Emitting Diode), for example.
e), an incoming lamp 630 and a speaker 640, and the display unit 620 is irradiated with light from a backlight (not shown) provided inside the housing. Thus, the user can see the display on the display unit 620.

At the time of an incoming call, the incoming call lamp 630 is blinked to notify the user of the incoming call, the backlight of the display unit 620 is turned on, and the display unit 520 displays the telephone number of the other party. Notify who the call came from.

[0006]

In the backlight of the display unit, power of about 2 mW to 5 mW is consumed. Therefore, it is preferable to reduce the power consumption of the backlight as much as possible.

[0007] From the viewpoint of product cost, it is preferable that the backlight or front light is as cheap as possible. If possible, the characters displayed on the display unit in a configuration without a light source such as a backlight or front light should be viewed. Is preferably possible.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic device which enables a user to recognize a telephone number displayed on a display unit without using a backlight. Item 1. The electronic device according to Item 1, includes a display unit that requires irradiation for display, and a light emitting unit that irradiates a part of the light to the display unit and emits a part of the light to the outside of the housing. It is characterized by having.

According to a second aspect of the present invention, in the electronic apparatus according to the first aspect, further, the part of the light is emitted to the outside of the electronic device through an exposed transparent or translucent window. It is characterized by the following.

According to a third aspect of the present invention, there is provided an electronic apparatus, wherein a semi-transmissive liquid crystal display, a light source disposed at a position for illuminating a front portion of the liquid crystal display, and a part of the light from the light source is displayed on the liquid crystal display. And a light guide plate for guiding to a back portion of the container.

According to a fourth aspect of the present invention, there is provided an electronic apparatus comprising: a semi-transmissive liquid crystal display; a light source for irradiating a part of light to the outside of the housing;
A light guide plate for guiding a part of the light of the light source to a front portion of the liquid crystal display.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus according to the present embodiment will be described below.

FIG. 1 is a perspective view of an electronic apparatus (for example, a two-folded portable telephone apparatus) according to a first embodiment of the present invention, and FIG. 2 is a rear view of the housing shown in FIG. FIG. The telephone device in FIG. 1 and FIG.
First having an input unit 110 including a numeric keypad and a call key
Case 100, a first display section 210 for displaying a number corresponding to a numeric keypad pressed when inputting a telephone number, a speaker 230, an incoming lamp window 240, and a second display for displaying the telephone number of the calling side when receiving an incoming call. A second case 200 having a display unit 250, and the first case 100 and the second case 200
And a hinge part 300 connecting the two.

FIG. 3 is a sectional view of the second display section 250 of the telephone device shown in FIG.

On the printed circuit board 221 inside the housing, RGB (Red, Green, Blue)
e) LE capable of emitting multicolor light having a light-emitting region of three colors inside
D222 is provided, and the light guide plate 2
23, for example, has a structure in which LCDs 224 composed of a liquid crystal display device are sequentially arranged.

Above the LED 222, an incoming lamp window 240 made of, for example, acrylic is disposed.
Above the CD 224 (in FIG. 2), a transparent display window 260 made of, for example, acrylic is arranged.

In this embodiment, the incoming lamp window is made of acrylic. However, the incoming lamp window is made hollow, and
222 may be configured to be exposed on the housing surface.

The light guide plate 223 is made of, for example, acrylic, and reflects the light from the LED 222 inside the light guide plate 223 to guide the light to the rear surface of the LCD 224 to irradiate the entire LCD 224 from the rear surface of the LCD 224.

The light from the light guide plate 223 adjacent to the LED 222 to the position in contact with the LCD 224 is confined by using a material having a refractive index higher than that of air.
The light guide plate 223 on the back side of the light guide 224 may be made of a material having a low refractive index to reflect light toward the LCD 224.

The LCD 224 is connected to a connector 229 on the printed circuit board 221 via a flexible printed circuit board 228 having a driver IC 227 mounted thereon. Can be displayed.

FIG. 4 shows a block diagram of the apparatus of this embodiment.

In the structure shown in FIG. 4 and the structures shown in FIGS. 1 to 3, the same parts are denoted by the same reference numerals.

In FIG. 4, a transmission / reception unit 400 performs modulation / demodulation of transmission / reception signals, detection of an incoming call, detection of a telephone number of a calling side, and the like. The input unit 110 includes a numeric keypad, a call key, an off key, and the like. The first display unit 210 is driven by a drive signal from the driver IC 410, and is capable of displaying numbers in response to pressing of a numeric keypad at the time of calling.

The LCD 224 of the second display unit 250 is driven by a drive signal from the driver IC 227, and displays the telephone number of the calling side detected by the transmission / reception unit 400 at the time of an incoming call.

The LED 222 has red, green, and blue light emitting regions, and can emit multicolor light. The LED control section 430 drives the LED 222.

The control unit 440 is a main CPU that controls these circuits.

Next, the operation of the first embodiment will be described with reference to FIG.
This will be described with reference to FIG.

When control section 440 detects a signal indicating the presence of an incoming call from transmitting / receiving section 400, it reads the calling-side telephone number from transmitting / receiving section 400 and controls driver IC 227 to display the calling-side telephone number on LCD 224. Let it.

The control unit 440 transmits a control signal to the LED control unit 430, and the LED control unit 430 drives the LED 222 according to the control signal (see FIG. 4).

When the LED 222 is turned on, the LED 222
Is guided by the light guide plate 223 to turn on the entire LCD 224 and emit light from the incoming lamp window 240 to the outside of the housing.

As described above, the user operates the incoming call lamp window 24.
The incoming call is recognized by the lighting of the 0 part, and the calling side number can be displayed on the LCD 224 to know who the calling side is.

As described above, the electronic device (telephone device) of the first embodiment transmits light from the LED 222 to the light guide plate 22.
LED to illuminate the entire LCD 224 via
222 serves as a light source for notifying an incoming call and a backlight light source dedicated to the LCD 224.

Next, a second embodiment of the present invention will be described below.

The difference between the first embodiment and the second embodiment is that the first embodiment
In the embodiment, the incoming lamp window 240 is formed above the LED 222, and the light guide plate 223 is arranged on the back side of the LCD 224. In the second embodiment, the light guide plate is arranged on the front side and the back side of the LCD 224. In addition, a display window 226 that is turned on or blinks at the time of an incoming call is arranged on a light guide plate arranged on the front side of the LCD 224.

FIG. 5 is a perspective view of the device of the second embodiment.

In FIG. 5, on the back side of the second housing 200, a second display section 25 for displaying a calling telephone number at the time of an incoming call.
0 is arranged. Further, a display window 226 that is turned on or blinks at the time of an incoming call is formed around the second display section 250.

FIG. 6 is a sectional view of a main part of the telephone device shown in FIG.

In the telephone device shown in FIG. 6, an LED 222 is arranged on a printed circuit board 221 on the left side of FIG. The first light guide plate 2 is provided on the printed circuit board 221 substantially at the center in FIG.
23, an LCD 224, and a second light guide plate 225 are arranged in this order. Further, a transparent display window 226 made of, for example, acrylic is provided in a housing portion on the second light guide plate 225 so that a user can see the display of the LCD 224 from outside the housing.

The circuit configuration of the second embodiment is the same as that of the first embodiment shown in FIG.

Next, the operation will be described.

When control unit 440 detects a signal indicating that there is an incoming call from transmission / reception unit 400, it reads the telephone number of the calling side from transmission / reception unit 400 and controls driver IC 227 to display the telephone number of the calling side on LCD 224. Let it.

The control unit 440 transmits a control signal to the LED control unit 430, and the LED control unit 430 drives the LED 222 in accordance with the control signal (see FIG. 4).

When the LED 222 is turned on, the LED 222
Is guided to the first light guide plate 223 to turn on the entire LCD 224 and to the second light guide plate 225 to turn on the entire display window 226.

As described above, in the electronic apparatus (telephone apparatus) according to the second embodiment, the LED 222 comprises a light source for an incoming lamp and an LCD.
In addition to not only serving as a light source for the backlight 224, but also irradiating the display window 226 with light from the LED 222 through the light guide plate 225, characters and patterns are drawn on the display window 226, The design emerges with light,
Excellent aesthetic appearance can be obtained.

As described above, the device of this embodiment guides the light emitted from the LED for the incoming call lamp to the display unit via the light guide plate, so that it is necessary to newly provide a light source for the backlight. Absent. For this reason, it is possible to reduce the cost and power consumption of the backlight.

In this embodiment, the LED 222 is always turned on. However, the LED 222 may be turned on and off.

In this embodiment, the present invention is applied to a two-fold portable telephone device. However, the present invention may be applied to a straight type telephone device.

Further, in this embodiment, L is used as the incoming call lamp.
Although the ED is used, the LED may be used as a power supply lamp or a lamp indicating an operation of a certain function, and the LED may be used also as a light source of a backlight (front light) of the LCD. That is, the present invention can be applied to any electronic device having a display device that requires light illumination for display.

Although the first embodiment has been described with respect to a backlight type electronic apparatus, a light guide plate 223 is arranged on the surface of the second display section 224 to irradiate the entire display section 224 with light. It is also possible to carry out with respect to the electronic device.

Further, as shown in the first embodiment, the structure may be such that the LED 222 is exposed on the surface of the housing without forming the acrylic display window 240, and the LCD 224 is formed without forming the acrylic display window 260. A configuration that is exposed on the body surface may be used.

[0051]

According to the electronic apparatus of the present invention, the cost and power consumption of the backlight can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an apparatus according to a first embodiment to which the present invention is applied.

FIG. 2 is a perspective view of an apparatus according to a first embodiment to which the present invention is applied.

FIG. 3 is a cross-sectional view of a main part of a second display unit 250 of FIG.

FIG. 4 is a block diagram of the apparatus according to the embodiment.

FIG. 5 is a perspective view of the device of the second embodiment.

FIG. 6 is a sectional view of a main part of a second display unit 250 shown in FIG. 5;

FIG. 7 is a diagram showing a conventional telephone device.

[Explanation of symbols]

 222 LED 223 First light guide plate 224 LCD 225 Second light guide plate 226 Display window 227 Driver IC 430 Three-color LED control unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masanobu Okamura 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Masato Mizune 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Sanyo Tottori Inside Electric Co., Ltd. (72) Inventor Junko Hase 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture F-term (reference) 2H091 FA23Z FA45Z FB02 FD12 LA11 LA13 LA16 5G435 AA03 BB04 BB12 BB15 BB16 EE22 EE27 FF08GG23 LL07 5K023 AA07 HH07 HH08

Claims (4)

[Claims] 1. A display device comprising: a display unit which requires irradiation for display; and a light emitting unit which irradiates a part of the light to the display unit and emits a part of the light to the outside of the housing. Electronic equipment characterized. 2. The electronic device according to claim 1, wherein said part of the light is radiated to the outside of the electronic device through an exposed transparent or translucent window. . 3. A transflective liquid crystal display, a light source disposed at a position for illuminating a front portion of the liquid crystal display, and a light guide for guiding a part of the light of the light source to a back portion of the liquid crystal display. An electronic device comprising a light plate. 4. A semi-transmissive liquid crystal display, a light source for irradiating a part of the light to the outside of the housing, and a light guide plate for guiding a part of the light of the light source to a front part of the liquid crystal display. An electronic device comprising: