JPH07294923A - Electronic device equipped with a lighting device - Google Patents

Abstract

PURPOSE:To clearly distinguish and read various information displayed on a display device and to give various ornamental effects by providing a luminaire with illumination sections which emit light of at least two kinds of color. CONSTITUTION:A reflection plate 5 whose external appearance is approximately rectangular, an EL element (luminaire) 6, a diffusing plate 7, and a liquid crystal display device(LCD) 8 are arranged like laminated layers on the upper face of an upper housing 1. This EL element 6 is provided with an illumination section, where a prescribed part emits light, and another illumination section as the background of this illumination section which emits light of the color different from that of this illumination section. Since the El element 6 of overall light emission is used as the luminaire, the illumination effect is excellent; and illumination sections different by colors simultaneously emit light by light emission of the EL element 6 to relieve a prescribed pattern on an LCD 8, and therefore, a unique ornamental effect is given.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus equipped with an illuminating device including an EL element for illuminating a display device.

[0002]

2. Description of the Related Art Conventionally, various electronic devices such as an electronic wristwatch having a micro lamp for illuminating the display device, a liquid crystal display panel, or an illuminating device such as an EL element are provided on the back surface of the display device. Are known.

[0003]

However, in a conventional electronic device using a micro lamp or a liquid crystal display plate as an illuminating device, since the micro lamp or the liquid crystal display plate does not emit light over the entire surface, the lighting effect is not improved. In addition, there is a problem in that there is uneven illumination on the display plate, and an area that is difficult to read partially occurs. Further, according to the one using an EL element as the illuminating device, although it is excellent in the illumination effect because it emits light over the entire surface, it emits light of a single color, so that various information displayed on the display device is At first glance, there was a problem that it was difficult to distinguish.

The present invention has been made to solve the problems of the electronic equipment having such a conventional lighting device, and various information displayed on the display device can be clearly distinguished and read. Alternatively, it is another object of the present invention to provide an electronic device including a lighting device that gives a decorative effect to the display plate with different colors and has an excellent appearance.

[0005]

According to another aspect of the present invention, there is provided an electronic apparatus including an illuminating device according to the present invention, wherein the illuminating device for illuminating the display device is provided on the back surface of the display device. A lighting device is provided, and the lighting device has a lighting section that emits at least two kinds of colors. According to a second aspect of the present invention, as the lighting device, an EL element in which the lighting section is configured by a light emitting layer that emits at least two kinds of colors is used.

According to another aspect of the present invention, there is provided an electronic apparatus including the illuminating device, wherein at least a reflecting plate, an EL element, a diffusing plate, and a liquid crystal display device are sequentially laminated on a circuit board.
Further, the EL element is characterized in that an illumination section is constituted by a light emitting layer which emits at least two kinds of colors. According to a fourth aspect of the present invention, in the liquid crystal display device according to the third aspect, at least one outer peripheral portion of the liquid crystal display device is formed to have a size larger than that of the EL element. And a contact formed on the upper surface of the liquid crystal display device is electrically connected by an interconnector, and the EL element and the contact formed on the upper surface of the circuit board at a position different from the outer peripheral position. And are electrically connected to each other.

In an electronic apparatus including the lighting device according to any one of claims 1 to 4, the lighting section may be formed corresponding to the display section of the display device as described in claim 5. Alternatively, as described in claim 6, it may be formed corresponding to a character, a figure, or a symbol displayed by light emission on the display device. According to a seventh aspect of the present invention, an electronic device including the lighting device according to the first to sixth aspects is applied to a digital electronic wrist watch.

[0008]

According to the invention described in claim 1, the illumination device is arranged on the back surface of the display device, and the illumination device is at least 2
Since it has an illumination section that emits different colors, it is possible to obtain an illumination function different from the conventional one by appropriately selecting the above-mentioned illumination section. That is, if the illumination section is formed so as to correspond to the display section of the display device as described in claim 5, various information displayed on the display device can be clearly distinguished and read, or As described in claim 6, when the display device is formed corresponding to a character, a figure or a symbol displayed by light emission, it is possible to give various decorative effects to the display device by different colors. Therefore, it is possible to obtain an excellent appearance in terms of design.

When an EL element is used as the illuminating device as in the second or third aspect of the invention, a more excellent illuminating effect can be obtained because the entire surface emits light. According to the invention described in claim 4, the circuit board, the EL element, and the liquid crystal display device, which are sequentially stacked, can be electrically connected to the respective contacts on the circuit board without interfering with each other. Therefore, the electronic device can be made compact. Therefore, the inventions described in claims 1 to 6 are, like the invention described in claim 7, particularly those which are excellent in readability in a dark place, decorativeness, and further digital type in which there is a strong demand for miniaturization. It is suitable when applied to a wrist watch.

[0010]

Embodiment 1 FIGS. 1 to 5 show an embodiment in which an electronic device equipped with a lighting device of the present invention is applied to a digital wristwatch. In these drawings, reference numeral 1 denotes an upper housing of a module incorporated in a case (not shown) of the digital wrist watch (hereinafter, abbreviated as a wrist watch), and a rectangular shape is provided at a central portion of the upper housing 1. The opening 2 is formed. This upper housing 1
A circuit board 3 is disposed on the back surface side of the LSI with the LSI 4 located in the opening 2. On the other hand, on the upper surface of the upper housing 1, the reflecting plate 5 having a substantially rectangular appearance,
An EL element (illumination device) 6, a diffusion plate 7, and a liquid crystal display device (LCD) 8 are arranged in a laminated form.

Here, in the EL element 6, as shown in FIGS. 2 and 3, an illumination section 10 in which a G-shaped portion emits light.
And a lighting section 11 that emits a color different from that of the lighting section 10 and serves as a background of the lighting section 10. On the outer peripheral portion of one side 12 of the short side of the EL element 6, a contact 13 protruding outward in a tongue shape is formed, and on the back side thereof, the outer peripheral portion of the opposite side 14 of the one side 12 is formed. A contact 15 having a substantially circular appearance is formed on the. Also,
The width dimension between the long sides 16 of the LCD 8 is EL.
It is formed so as to be larger than the width dimension between the long sides of the element 6, and on the back side of the long sides 16, 16 extending outward from the long side of the EL element 6, along the longitudinal direction. Contact 1
7, 17 are provided.

The EL element 6 has its contact 13
Is inserted into the groove portion 18 formed in the upper housing 1, and electrically connected to the contact 21 provided on the upper surface of the circuit board 3 via the spring 20 inserted into the through hole 19 in the groove portion 18 of the upper housing 1. It is connected. Also, this E
The other contact 15 of the L element 6 is the spring 2 inserted into the through hole 22 formed at the corresponding position of the upper housing 1.
Similarly, a contact 2 provided on the upper surface of the circuit board 3 via
4 is electrically connected. Further, the LCD 8
Is connected to contacts 27, 27 provided on the upper surface of the circuit board 3 via interconnectors 26, 26, the contacts 17, 17 of which are inserted in rectangular groove portions 25 formed in corresponding portions of the upper housing 1, respectively. It is electrically connected.

In the wristwatch provided with the illuminating device having the above structure, the width dimension between the long sides 16 of the LCD 8 is formed to be larger than the width dimension between the long sides of the EL element 6. The contacts 17, 17 provided on the back side of the long sides 16, 16 and the contact 2 formed on the upper surface of the circuit board 3.
7 and 27 are electrically connected by interconnectors 26 and 26, and contact points 13 and 15 of the EL element 6 are connected to the short sides 12 and 14 of the EL element 6 adjacent to the long sides 16 and 16. Contact points 21 and 2 on the upper surface of the circuit board 3
4 are electrically connected to each other, the circuit board 3, the EL element 6 and the LCD 8 which are sequentially stacked are contacted with each other on the circuit board 3 without interfering with each other.
Since it can be electrically connected to the watch 27, the wristwatch can be made thin and compact.

Further, since the EL element 6 that emits light over the entire surface is used as the illuminating device, the illuminating effect is excellent, and when the EL element 6 is made to emit light, as shown in FIG. The lighting section 11 and the lighting section 11 simultaneously emit light, and a G-shaped pattern floats on the LCD 8,
A peculiar decorative effect can be given, so that an appearance superior in design can be obtained as compared with the conventional one.

[0015]

[Embodiment 2] FIGS. 6 to 8 show a second embodiment of an electronic apparatus equipped with the lighting device of the present invention, and the configuration of the portion excluding the EL element (lighting device) is shown in FIGS. Since it is the same as that shown in FIG. 5, its description is omitted. In the wristwatch of this embodiment, the EL of the first embodiment described above is used.
An EL element 30 is incorporated in place of the element 6. As shown in FIG. 6 and FIG. 7, the EL element 30 is provided with illumination sections 33 and 34 which are divided into two at the central portions of the short sides 31 and 32 thereof and emit different colors. Here, as shown in FIG. 8, the EL element 30 is
The illumination section 33 is laminated on the LCD 8 so as to illuminate the portion 8a of the LCD 8 that displays the month and day and the day of the week, and the illumination section 34 illuminates the portion 8b of the LCD 8 that displays the hour, minute, and second. A contact 35 is formed on one short side 31 of the EL element 30 so as to extend outward in a tongue shape, and a contact 36 is formed on the back surface of the other short side 32.

Therefore, according to the wristwatch of this embodiment, in addition to the same effect as that of the first embodiment, the EL element 30 is provided corresponding to the display section of the LCD 8. Since the lighting sections 33 and 34 that emit different colors are used, when the EL element 30 is made to emit light, the portion 8a that displays the month and day and the day of the week displayed on the LCD 8 and the hour, minute, and second are displayed. Displayed part 8
Since b and b can be illuminated with different colors, it is possible to clearly distinguish and read the information in a dark place.

[0017]

As described above, in the electronic equipment provided with the illumination device of the present invention, the illumination device is arranged on the back surface of the display device, and the illumination device emits at least two kinds of colors. Since it has an illumination section, a display function different from the conventional one can be obtained by appropriately selecting the illumination section. That is, if the illumination section is formed corresponding to the display section of the display device, various information displayed on the display device can be clearly distinguished and read, or displayed by light emission on the display device. When the display device is formed in correspondence with different characters, figures, or symbols, various display effects can be given to the display device with different colors, so that it is possible to obtain a peculiar appearance excellent in design. At this time, if an EL element is used as the above-mentioned illuminating device, it is possible to obtain a more excellent illuminating effect because the entire surface emits light.

In addition, at least one outer peripheral portion of the liquid crystal display device is formed to have a size larger than that of the EL element,
The outer peripheral portion and the contacts of the liquid crystal display device formed on the upper surface of the circuit board are electrically connected by an interconnector, and the EL element and the upper surface of the circuit board are located at a position different from the outer peripheral portion position. By electrically connecting the contacts formed on the circuit board, the sequentially laminated circuit board, EL element and liquid crystal display device can be electrically connected to the respective contacts on the circuit board without interfering with each other. Therefore, the electronic device can be made compact.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts showing an embodiment in which an electronic device equipped with a lighting device of the present invention is applied to a digital wristwatch.

FIG. 2 is a plan view showing the EL element of FIG.

FIG. 3 is a bottom view of FIG.

FIG. 4 is a plan view showing a state in which the EL element of FIG. 1 and a liquid crystal display device are stacked.

5 is a side sectional view of a main part of FIG.

FIG. 6 is a plan view of an EL device according to another embodiment of the present invention.

FIG. 7 is a bottom view of FIG.

FIG. 8 is a plan view showing a state in which an EL element and a liquid crystal display device according to another embodiment described above are stacked.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Upper housing 3 Circuit board 5 Reflector plate 6,30 EL element (illumination device) 7 Diffusion plate 8 Liquid crystal display device (display device) 10, 11, 33, 34 Illumination section 13, 15, 17, 21, 24, 27, 35, 36 contacts 20, 23 springs 26 interconnector

Claims (7)

[Claims] 1. An electronic apparatus comprising an illuminating device, wherein an illuminating device for illuminating the display device is provided on the back surface of the display device, wherein the illuminating device emits at least two types of colors. An illuminating device having an illuminating section that operates. 2. The lighting device according to claim 1, wherein the lighting section is composed of a light emitting layer which emits at least two kinds of colors.
An electronic device comprising the lighting device according to claim 1, comprising an L element. 3. A circuit board, at least a reflector, and E
An illumination device comprising an L element, a diffusion plate, and a liquid crystal display device, which are sequentially stacked, and the EL element includes an illumination section formed by a light emitting layer that emits at least two types of colors. Electronic equipment equipped with. 4. The liquid crystal display device, wherein at least one outer peripheral portion is formed to have a size larger than that of the EL element, and a contact point of the liquid crystal display device formed on the outer peripheral portion and an upper surface of the circuit board. Are electrically connected by an interconnector, and the EL element and a contact formed on the upper surface of the circuit board are electrically connected at a position different from the outer peripheral position. An electronic device comprising the lighting device according to claim 3. 5. The lighting section is formed corresponding to a display section of the display device.
Electronic equipment provided with the illuminating device in any one of -4. 6. The illumination according to claim 1, wherein the display section is formed corresponding to a character, a figure or a symbol displayed by light emission on the display device. An electronic device equipped with a device. 7. The electronic device equipped with the lighting device according to claim 1, wherein the electronic device is a digital electronic wrist watch.