JP3120560B2 - Electronics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a personal computer.
More particularly, the present invention relates to an electronic device having a liquid crystal display device requiring a backlight and the like.

[0002]

2. Description of the Related Art In recent years, personal computers and word processors have become remarkably popular. Among them,
A portable type in which a liquid crystal display device with a backlight is incorporated in order to make the display easier to see is increasing.

[0003] Hereinafter, electronic equipment incorporating a conventional liquid crystal display device with a backlight will be described with reference to the drawings.

FIG. 3 is a sectional perspective view of a display block of a conventional electronic device, and FIG. 4 is a developed view of a reflection member.

In FIG. 3, a display block of an electronic apparatus comprises a tubular light source 11, light emitted from the tubular light source 11 entering through a side end surface 12a, and a display surface 12b and a reflection surface 12c.
And a reflection member 33 disposed on the reflection surface 12c side of the light guide plate 12 and reflecting light incident on the side end surface 12a to the display surface 12b side. . Then, the reflecting member 33, the side end face 12a of the reflecting surface 12c light guide from the side plate 12 substantially extended the tip of the light guide plate 12 surrounds the light source 11 of the tubular at the same width of the light guide plate 12
Has reached the display surface 12b. The tip is bonded and fixed to the light guide plate 12 and the bonding member 34 on the display surface 12b.

In FIG. 4, the conventional reflecting member 33 is parallel to the side end surface 12a of the light guide plate 12 with respect to the surface to be bonded to the light guide plate 12 in FIG. It was designed and constructed linearly.

[0007]

However, in such a conventional electronic device, the reflecting member 33 is connected to the light guide plate 1.
When the light source 11 is bonded to the second light source 11, the thickness of the reflection member 33 is 100 μm or more to increase the reflection efficiency, and the thickness of the reflection member 33 is high.
In the vicinity of the central portion 33a, a strong stress is exerted, and a problem occurs that the adhesive is peeled off at that portion. For this reason, there has been a problem that a portion where the adhesive has been peeled off does not adhere to each other to form a gap and light leaks, so that a display block of stable quality cannot be supplied as a display block of an electronic device.

Therefore, it has been difficult to practically use a reflecting member having a thickness of 100 μm or more to surround a tubular light source and efficiently input the light amount of the tubular light source to the light guide plate. .

The present invention solves the above-mentioned conventional problems. Light emitted from a tubular light source is efficiently reflected by a reflecting member, and is incident on a light guide plate without loss due to light leakage. It is an object of the present invention to provide an electronic device provided with a display block that increases the amount of light that reaches, is easy for a user of the electronic device to see, and has stable quality.

[0010]

In order to achieve the above object, an electronic apparatus according to the present invention includes a tubular light source, and a display surface and a reflective surface for receiving light emitted from the tubular light source from a side end surface. A light guide plate, and a reflection member disposed on the reflection surface side of the light guide plate and reflecting light incident on the side end surface to the display surface side. It has an adhesive member that extends from the surface side, surrounds the tubular light source, reaches the display surface at the side end surface of the light guide plate, and adheres the display surface to the light guide plate. In addition, the end face side of the reflecting member having the adhesive member has an arc shape in which the length near the center is longer than the length of both ends.

[0011]

According to the above arrangement, a tubular light source can be surrounded by a reflective member having a thickness of 100 μm or more that reflects the reflective surface of the light guide plate, and can be brought into close contact with the display surface of the light guide plate. Light can be efficiently reflected without leaking near the center of the display surface of the light guide plate of the reflection member, and can enter the light guide plate, whereby light can be efficiently transmitted to the display member. .

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional perspective view showing a display block of an electronic apparatus according to one embodiment of the present invention, and FIG. 2 is a developed view of a reflection member. 1 and 2, the same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. The difference from the conventional example is that the shape of the portion of the reflection member 13 that is bonded to the display surface 12b of the light guide plate 12 is changed.

In FIG. 2, the display surface 12 of the reflecting member 13 is shown.
b from the side end surface 12a of the light guide plate 12
The length La is the length La near the center of the width of the reflection member 13.
Is longer than the length Lb of both ends 13b by 1 mm or more, and has an arc shape. Then, the adhesive member 14 follows this shape.
Is pasted.

Accordingly, when the reflecting member 13 is bonded to the display surface 12b of the light guide plate 12 with the bonding member 14, the stress due to the bending of the reflecting member 13 near the central portion 13a is reduced and the light guide plate 12 is peeled off. Adhere without sticking. Therefore, the light emitted from the tubular light source 11 efficiently enters the light guide plate 12 without leaking out of the reflection member 13, and as a result, the light is efficiently transmitted to the display member 15. In actual measured values, the light transmission efficiency could be improved so that the luminance of the display member was about 1.3 times the conventional luminance.

In this embodiment, the portion of the reflecting member 13 adhered to the display surface 12b is arc-shaped, but the length La near the center 13a is longer than the length Lb of both ends 13b. Any shape may be used as long as it has such a shape.

[0017]

As described above, according to the present invention, the adhesion between the light guide plate and the reflection member is improved by making the length near the center portion of the reflection member adhered to the display surface longer than the length near both ends. And it can be made difficult to peel off. As a result, there is no light leakage, light emitted from the tubular light source can be efficiently incident on the light guide plate, light transmission efficiency to the display unit is improved, and a display block that is brighter and easier to see for the user is provided. Electronic device having the same.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a display block of an electronic device according to an embodiment of the present invention.

FIG. 2 is a development view of a reflection member of the electronic device according to the embodiment of the present invention.

FIG. 3 is a sectional perspective view of a display block of a conventional electronic device.

FIG. 4 is a development view of a reflection member of a conventional electronic device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Tubular light source 12 Light guide plate 12a Side end surface 12b Display surface 12c Reflection surface 13 Reflection member 13a Near center 13b End portion 14 Adhesion member

Claims (2)

(57) [Claims] 1. A plate-shaped light guide plate having a tubular light source, a light emitted from the tubular light source, and a display surface and a reflection surface for receiving light from a side end surface, and a reflection surface of the light guide plate. Placed above
A reflection member for reflecting light incident on the side end surface of the light guide plate toward the display surface side, wherein the reflection member is extended from the reflection surface side of the light guide plate by substantially the same width as the light guide plate, and the tubular light source is provided. And the tip thereof reaches the display surface of the light guide plate, and has an adhesive member for bonding and fixing the light guide plate on the display surface in the vicinity of the tip , and the tip is the
Length from the side end face of the light guide plate is near the center of the width the
An electronic device having an arc shape longer than both ends of a width . 2. The electronic apparatus according to claim 1, wherein said reflection member has a thickness of 100 μm or more.