JP2014203602A5

JP2014203602A5 -

Info

Publication number: JP2014203602A5
Application number: JP2013077270A
Authority: JP
Filing date: 2013-04-02
Publication date: 2016-01-07

Description

本発明は、以下の構成によって把握される。
（１）本発明の面状照明装置は、光源と、前記光源を第１側端面に沿って配置させた導光板と、前記導光板の少なくともいずれか一方の主面に重ねて配置された光学シートと、少なくとも前記導光板の前記第１側端面に交差する第２側端面の周辺部を前記光学シートとともに覆って貼付される、断面がコ字状に屈曲された固定テープと、を有することを特徴とする。
（２）本発明の面状照明装置は、（１）の構成において、前記固定テープが、更に、前記導光板の前記第１側端面及び前記第１側端面の反対側の側端面を覆って貼付されることを特徴とする。
（３）本発明の面状照明装置は、（１）または（２）の構成において、前記固定テープは、一方の面が白色で他方の面が黒色のテープからなり、前記導光板および光学シートとの貼付面が白色となっていることを特徴とする。
（４）本発明の面状照明装置は、（１）の構成において、前記導光板の前記光源が配置された前記第１側端面の周辺部を前記光学シートとともに覆って配置され、前記光源を内包する、断面がコ字状の第１樹脂フレームを有することを特徴とする。
（５）本発明の面状照明装置は、（４）の構成において、前記導光板の前記光源が配置された前記第１側端面の反対側の側端面の周辺部を前記光学シートとともに覆って配置される、断面がコ字状の第２樹脂フレームを有することを特徴とする。
（６）本発明の面状照明装置は、（５）の構成において、前記主面のうち光出射面側の前記第１樹脂フレームと前記第２樹脂フレームを覆って配置される遮光シートを有し、前記遮光シートは、前記固定テープとともに、有効発光領域を区画する額縁を構成することを特徴とする。
（７）本発明の面状照明装置は、（１）ないし（６）のいずれかの構成において、前記光学シートは、前記導光板の前記主面のうち光出射面と反対側の面に配置される反射シートを含むことを特徴とする。
（８）本発明の面状照明装置は、（１）ないし（７）のいずれかの構成において、前記光学シートは、前記導光板の前記主面のうち前記光出射面に配置される拡散シートと一対のプリズムシートを含むことを特徴とする。
The present invention is grasped by the following composition.
(1) The planar illumination device of the present invention includes a light source, a light guide plate in which the light source is disposed along the first side end surface, and an optical element that is disposed on at least one main surface of the light guide plate. A sheet and a fixing tape having a cross-section bent in a U-shape, which is attached so as to cover at least a peripheral portion of the second side end surface intersecting the first side end surface of the light guide plate together with the optical sheet. It is characterized by.
(2) In the planar lighting device of the present invention, in the configuration of (1), the fixing tape further covers the first side end surface of the light guide plate and the side end surface opposite to the first side end surface. It is affixed.
(3) the planar lighting device of the present invention, (1) or in the configuration of (2), wherein the fixing tape is made from one side and the other surface in white is black tape, the light guide plate and optical sheet And the sticking surface is white.
( 4 ) The planar lighting device of the present invention is arranged in the configuration of (1 ), the peripheral portion of the first side end surface where the light source of the light guide plate is disposed is covered with the optical sheet, and the light source A first resin frame having a U-shaped cross section is included.
( 5 ) The planar illumination device according to the present invention covers the peripheral part of the side end surface of the light guide plate on the side opposite to the first side end surface together with the optical sheet in the configuration of ( 4 ). A second resin frame having a U-shaped cross section is disposed.
( 6 ) The planar lighting device of the present invention has a light shielding sheet arranged to cover the first resin frame and the second resin frame on the light emitting surface side of the main surface in the configuration of ( 5 ). And the said light shielding sheet comprises the frame which divides an effective light emission area | region with the said fixed tape.
( 7 ) In the planar illumination device according to any one of (1) to ( 6 ), the optical sheet is disposed on a surface on the opposite side of the main surface of the light guide plate from the light emitting surface. It is characterized by including the reflective sheet.
( 8 ) In the planar illumination device according to any one of (1) to ( 7 ), the optical sheet is a diffusion sheet disposed on the light exit surface of the main surface of the light guide plate. And a pair of prism sheets.

Claims

A light source;
A light guide plate in which the light source is disposed along the first side end surface;
An optical sheet disposed to overlap at least one main surface of the light guide plate;
A fixing tape whose cross section is bent in a U-shape, which is attached so as to cover at least the peripheral portion of the second side end surface intersecting the first side end surface of the light guide plate together with the optical sheet;
A planar illumination device comprising:

The planar lighting device according to claim 1, wherein the fixing tape is further attached so as to cover the first side end surface of the light guide plate and a side end surface opposite to the first side end surface.

The fixing tape, one surface is made of a tape and the other surface of the black white, according to claim 1 or 2 attaching surface of the light guide plate and the optical sheet is characterized in that it is a white Planar lighting device.

A first resin frame having a U-shaped cross section is provided, covering the periphery of the first side end surface of the light guide plate where the light source is disposed together with the optical sheet, and including the light source. The planar illumination device according to claim 1 .

A second resin frame having a U-shaped cross section is disposed so as to cover a peripheral portion of a side end surface opposite to the first side end surface where the light source of the light guide plate is disposed together with the optical sheet. The planar illumination device according to claim 4 .

A light-shielding sheet disposed to cover the first resin frame and the second resin frame on the light emission surface side of the main surface;
6. The planar illumination device according to claim 5 , wherein the light shielding sheet constitutes a frame that partitions an effective light emitting area together with the fixing tape.

The planar illumination device according to any one of claims 1 to 6 , wherein the optical sheet includes a reflective sheet disposed on a surface of the light guide plate on a side opposite to the light emitting surface. .

The planar illumination according to any one of claims 1 to 7 , wherein the optical sheet includes a diffusion sheet and a pair of prism sheets arranged on the light exit surface of the main surface of the light guide plate. apparatus.