JP2006351511A5

JP2006351511A5 -

Info

Publication number: JP2006351511A5
Application number: JP2006098728A
Authority: JP
Filing date: 2006-03-31
Publication date: 2009-04-30
Anticipated expiration: 2026-03-31

Claims

In the light guide plate that emits the light from the light source arranged facing the side end surface from the main surface orthogonal to the side end surface,
The thickness of the side end surface facing the light source is made larger than the thickness of the main portion constituting the main surface, and the light incident portion constituted by the side end surface is divided into a plurality of thickness directions,
Side guide for guiding the light from the light incident part sideways along a plane substantially parallel to the main part so as to be continuous with at least a part of the light incident parts divided into a plurality of parts. Hikari and
A bent light guide whose surfaces on opposite sides are substantially parallel to guide light from the light incident portion having a height different from that of the main portion of the light guide plate in the plurality of light incident portions to the main portion. And a light guide plate.

Light from a light incident part having the same height as the main part of the light guide plate is directly incident on the main part, and light from a light incident part having a height different from that of the main part of the light guide plate is incident on the side light guide part and the bent light guide. The light guide plate according to claim 1, wherein the light guide plate is incident on the main portion through the light portion.

A bent light guide having a plurality of light incident portions different in height from the main portion of the light guide plate, and light from the light incident portions is provided continuously with the side light guide portions and the respective side light guide portions. The light guide plate according to claim 1, wherein the light guide plate is incident on the main body through the portion.

Light from a light incident part having a height different from that of the main part of the light guide plate is transmitted to the main part via a plurality of side light guide parts and a bent light guide part provided continuously with each side light guide part. The light guide plate according to claim 2, wherein the light guide plate is incident.

It has a pair of light incident parts that are deviated from each other in the thickness direction with respect to the main part, and the light from one light incident part passes through the bent light guide part without passing through the side light guide part. The light guide plate according to claim 1, wherein light from the other light incident part is incident on the main part via the side light guide part and the bent light guide part.

The light guide plate according to claim 1, wherein the side light guide portion is curved on a plane substantially parallel to the main surface.

The guide according to claim 1, wherein the bent light guide part is bent in the thickness direction and extends in an extending direction of the side light guide part when projected onto a plane substantially parallel to the main surface. Light board.

The light guide plate according to claim 1, wherein a plurality of light incident portions are provided at a predetermined distance along the side end surface.

The light guide plate according to claim 1, wherein the light guide plate is integrally formed of a transparent or translucent material.

The light guide plate according to claim 1, wherein the light guide plate is integrally formed of an acrylic resin.

In the light guide plate that emits the light from the light source arranged facing the side end surface from the main surface orthogonal to the side end surface,
The thickness of the side end surface facing the light source is made larger than the thickness of the main portion constituting the main surface, and the light incident portion constituted by the side end surface is divided into a plurality of thickness directions,
Side guide for guiding the light from the light incident part sideways along a plane substantially parallel to the main part so as to be continuous with at least a part of the light incident parts divided into a plurality of parts. Hikari and
The outer bending start position for guiding light from the light incident part having a height different from that of the main part of the light guide plate in the plurality of divided light incident parts to the main part from the inner bending start position. And a bent light guide part biased toward the light source side.

The light guide plate according to claim 11, wherein an outer inclination angle of the bent light guide portion is smaller than an inner inclination angle.

13. The guide according to claim 12, wherein an outer bending start position and an outer bending end position of the bending light guide part are biased toward the light source side with respect to the inner bending start position and the inner bending end position, respectively. Light board.

The light incident part constituted by the side end faces is divided into a plurality of thickness directions, and the thickness of the light incident part corresponding to the bent light guide part is determined from the thickness of the light incident part corresponding to the linear light guide part. The light guide plate according to claim 12, wherein the light guide plate is also made smaller.

In the light guide plate that emits the light from the light source arranged facing the side end surface from the main surface orthogonal to the side end surface,
The thickness of the side end surface facing the light source is made larger than the thickness of the main portion constituting the main surface, and the light incident portion constituted by the side end surface is divided into a plurality of thickness directions,
Side guide for guiding the light from the light incident part sideways along a plane substantially parallel to the main part so as to be continuous with at least a part of the light incident parts divided into a plurality of parts. Hikari and
A bent light guide whose surfaces on opposite sides are substantially parallel to guide light from the light incident portion having a height different from that of the main portion of the light guide plate in the plurality of light incident portions to the main portion. And set up
A light incident part that is continuous with the side end face and continuous with the side light guide part, and a light incident part that is continuous with the side end face and continues with the bent light guide part are partially overlapped in the thickness direction. A light guide plate characterized by that.

In the light guide plate that emits the light from the light source arranged facing the side end surface from the main surface orthogonal to the side end surface,
The thickness of the side end surface facing the light source is made larger than the thickness of the main portion constituting the main surface, and the light incident portion constituted by the side end surface is divided into a plurality of thickness directions,
Side guide for guiding the light from the light incident part sideways along a plane substantially parallel to the main part so as to be continuous with at least a part of the light incident parts divided into a plurality of parts. Hikari and
A bent light guide whose surfaces on opposite sides are substantially parallel to guide light from the light incident portion having a height different from that of the main portion of the light guide plate in the plurality of light incident portions to the main portion. And set up
In addition, the light guide plate is characterized in that the start position of the bent light guide section is biased toward the light source with respect to the end of the side light guide section.

A display device that performs illumination by irradiating light from the back side or the front side, comprising a light source and a light guide plate,
The light guide plate emits light from a light source arranged facing the side end surface from a main surface orthogonal to the side end surface,
The thickness of the side end surface facing the light source is made larger than the thickness of the main portion constituting the main surface, and the light incident portion constituted by the side end surface is divided into a plurality of thickness directions,
Side guide for guiding the light from the light incident part sideways along a plane substantially parallel to the main part so as to be continuous with at least a part of the light incident parts divided into a plurality of parts. Hikari and
A bent light guide whose surfaces on opposite sides are substantially parallel to guide light from the light incident portion having a height different from that of the main portion of the light guide plate in the plurality of light incident portions to the main portion. And a display device.

A display device that performs illumination by irradiating light from the back side or the front side, comprising a light source and a light guide plate,
The light guide plate emits light from a light source arranged facing the side end surface from a main surface orthogonal to the side end surface,
The thickness of the side end surface facing the light source is made larger than the thickness of the main portion constituting the main surface, and the light incident portion constituted by the side end surface is divided into a plurality of thickness directions,
Side guide for guiding the light from the light incident part sideways along a plane substantially parallel to the main part so as to be continuous with at least a part of the light incident parts divided into a plurality of parts. Hikari and
The outer bending start position for guiding light from the light incident part having a height different from that of the main part of the light guide plate in the plurality of divided light incident parts to the main part from the inner bending start position. And a bent light guide portion biased toward the light source side.