JP3110288U

JP3110288U - Light guide structure

Info

Publication number: JP3110288U
Application number: JP2005000590U
Authority: JP
Inventors: 曾文保
Original assignee: 科橋電子股▲ふん▼有限公司
Priority date: 2005-02-09
Filing date: 2005-02-09
Publication date: 2005-06-16
Anticipated expiration: 2011-02-09

Abstract

【課題】光源から発する光線を有効に分配して明暗区現象を発生させないライトガイドの構造を提供する。
【解決手段】ライトガイドの構造は、各光源の出光面上にライトガイド、複数枚の光学膜片及び液晶面板が順に設置される。そのうち、ライトガイドの入光側から有効発光区域の間に一個以上の中空層を形成する。その中空層の一側面若し<は二側面には光線調節部品を設置し、光源の光線がライトガイドの中空層に進入した時、光線ルートが変化し、同時に光線調節部品によって、反射率が増し、各光学膜片に向けて均一に放出され、輝度及び均一性を向上させる。
【選択図】図2The present invention provides a light guide structure that effectively distributes light emitted from a light source and does not cause a light-dark zone phenomenon.
The light guide has a structure in which a light guide, a plurality of optical film pieces, and a liquid crystal face plate are sequentially installed on the light exit surface of each light source. Among these, one or more hollow layers are formed between the light incident side of the light guide and the effective light emitting area. A light adjustment component is installed on one or two sides of the hollow layer, and when the light beam from the light source enters the hollow layer of the light guide, the light beam route changes. And is evenly emitted toward each optical film piece to improve brightness and uniformity.
[Selection] Figure 2

Description

本考案は、ライトガイドの構造に関するもので、明暗区現象を発生させない構造である。 The present invention relates to the structure of a light guide, and does not generate a light-dark zone phenomenon.

図1は、一般の液晶面板のバックライトモジュール構造断面図である。バックライトモジュールの構造は、液晶面板10底面にライトガイド20が設置され、そのライトガイド20の出光面にプリズム片若しくは拡散片から構成される光学膜片が設置される。ライトガイド20の反射面には反射板40が設置され、両側には光源50が設置される。光源50から放出された光線がライトガイド20に照射されると、ライトガイド20及び反射板40の曲射及び反射作用によって、光線が上に導かれ、プリズム片若しくは拡散片から構成される光学膜片30を通り、平均化された光線が液晶面板10から放出される。 FIG. 1 is a cross-sectional view of a backlight module structure of a general liquid crystal face plate. In the backlight module structure, a light guide 20 is installed on the bottom surface of the liquid crystal face plate 10, and an optical film piece composed of a prism piece or a diffusion piece is installed on the light output surface of the light guide 20. A reflecting plate 40 is installed on the reflecting surface of the light guide 20, and a light source 50 is installed on both sides. When the light guide 20 is irradiated with the light beam emitted from the light source 50, the light guide 20 and the reflecting plate 40 are bent and reflected by the light guide 20 so that the light beam is guided upward, and is an optical film piece composed of a prism piece or a diffusion piece. Through 30, the averaged light beam is emitted from the liquid crystal face plate 10.

あるものには、ライトガイド20の反射面21には反射機能を具えた光線調節構造22が設置されている。この光線調節構造22の形体には、円形、矩形、線状等異なる形状があり、作用として光源が光線調節構造22を経て反射されると、光源からスムーズに強い光を導き出したり、プリズム片や拡散片等の光学膜片30を変化させ、強い光を導き、光の輝度及び均一化を向上させる。 In some cases, a light beam adjusting structure 22 having a reflecting function is installed on the reflecting surface 21 of the light guide 20. The shape of the light adjusting structure 22 has different shapes such as a circle, a rectangle, and a line, and when the light source is reflected through the light adjusting structure 22 as an action, the strong light is smoothly led from the light source, the prism piece, The optical film piece 30 such as a diffusing piece is changed to guide strong light and improve the brightness and uniformity of the light.

解決しようとする問題点は、公知の液晶モジュールが抱える有効な明暗区現象を解決することが出来ない点である。 The problem to be solved is that it is not possible to solve the effective light-dark zone phenomenon that a known liquid crystal module has.

本考案は、各光源の出光面上にライトガイド、複数枚の光学膜片及び液晶面板が順に設置される。そのうち、ライトガイドの入光側から有効発光区域の間に一個以上の中空層を形成する。その中空層の一側面若しくは二側面に光線調節部品を設置し、光源の光線がライトガイドの中空層に進入した時、光線ルートが変化し、同時に光線調節部品によって、反射率が増し、各光学膜片に向けて均一に放出され、輝度及び均一性を向上させることを最も主要な特徴とする。 In the present invention, a light guide, a plurality of optical film pieces, and a liquid crystal face plate are sequentially installed on the light exit surface of each light source. Among them, one or more hollow layers are formed between the light incident side of the light guide and the effective light emitting area. When a light beam adjusting component is installed on one or two sides of the hollow layer, and the light beam from the light source enters the light guide hollow layer, the light beam route changes, and at the same time, the light adjusting component increases the reflectivity, and each optical The most important feature is that it is emitted uniformly toward the film piece to improve brightness and uniformity.

本考案のライトガイドの構造は、主動的、積極的手段によって光線を有効に分配し、液晶面板の明暗区現象を改善するという利点がある。 The light guide structure of the present invention has an advantage that light rays are effectively distributed by main and active means, and the light and dark area phenomenon of the liquid crystal face plate is improved.

以下、本考案の実施例について、図面を参照しながら説明する。 Embodiments of the present invention will be described below with reference to the drawings.

図2及び図3に示すとおり、上述と同様に液晶面板10底面にライトガイド20を設置し、そのライトガイド20の出光面にプリズム片もしくは拡散片から構成される光学膜片を設置する。またライトガイド20の反射面には反射板40を設置し、両側には光源50を設置する。光源50から放出された光線がライトガイド20に進入すると、ライトガイド20及び反射板40の曲射及び反射作用によって、光線を上へ導き、プリズム片もしくは拡散片から構成される光学膜片30を通り、平均化された光線が液晶面板10から出る。 As shown in FIGS. 2 and 3, a light guide 20 is installed on the bottom surface of the liquid crystal face plate 10 in the same manner as described above, and an optical film piece composed of a prism piece or a diffusion piece is installed on the light exit surface of the light guide 20. Further, a reflecting plate 40 is installed on the reflecting surface of the light guide 20, and a light source 50 is installed on both sides. When the light beam emitted from the light source 50 enters the light guide 20, the light guide 20 and the reflecting plate 40 are bent and reflected to guide the light beam upward and pass through the optical film piece 30 composed of a prism piece or a diffusion piece. The averaged light beam emerges from the liquid crystal face plate 10.

ライトガイド20の板体内には、入光側Aから有効発光区域Bまでの間に一個以上の中空層23が形成される。この中空層23は連続性(図4参照)もしくは非連続性(図3参照)で、この中空層23の一側面に光線調節部品231を設置する。この光線調節部品231の形状は、円形、矩形、線状等異なる形状で、光源50の光線が中空層23を通ると、光線ルートが変化し、図5に示すように光線を有効に分配し、均一化して放出する。更に光源が光線調節部品231を通って放射されると、光線は拡散機能が強化される。ライトガイド20の反射面21若しくは出光面25には、光反射機能を具えた光線調節構造22が設置される。この光線調節構造2は各種幾何学形状で、光源は二回の光線調節部品の反射作用を経て、光の輝度及び均一化が向上する。 In the plate of the light guide 20, one or more hollow layers 23 are formed between the light incident side A and the effective light emitting area B. The hollow layer 23 is continuous (see FIG. 4) or discontinuous (see FIG. 3), and the light adjusting component 231 is installed on one side surface of the hollow layer 23. The light adjusting component 231 has a different shape such as a circular shape, a rectangular shape, or a linear shape, and when the light beam of the light source 50 passes through the hollow layer 23, the light beam route changes, and the light beam is effectively distributed as shown in FIG. , Release evenly. Further, when the light source is emitted through the light adjusting component 231, the light has an enhanced diffusion function. A light beam adjustment structure 22 having a light reflection function is installed on the reflection surface 21 or the light exit surface 25 of the light guide 20. The light adjusting structure 2 has various geometric shapes, and the light source is subjected to the reflection action of the light adjusting component twice, so that the brightness and uniformity of the light are improved.

図6に示すとおり、ライトガイド20の一角部に照射進入面24を設置し、その照射進入面24は、欠切形状とする。そして光源50を一角部に設置し、光線は照射進入面24から入ってライトガイド20へ進む。ライトガイド20下方には反射板40が設置され、中空層23は光源50の位置に相対して設置され、同様に光源50が中空層23を通った時、光線ルートが変化する。 As shown in FIG. 6, an irradiation approach surface 24 is installed at one corner of the light guide 20, and the irradiation approach surface 24 has a notch shape. Then, the light source 50 is installed at one corner, and the light enters from the irradiation entrance surface 24 and proceeds to the light guide 20. A reflector 40 is installed below the light guide 20, and the hollow layer 23 is installed relative to the position of the light source 50. Similarly, when the light source 50 passes through the hollow layer 23, the light path changes.

公知のバックライトモジュール構造指示図である。It is a well-known backlight module structure instruction diagram. 本考案のバックライトモジュール構造指示図である。It is a backlight module structure instruction | indication figure of this invention. 本考案のバックライトモジュールの別角度から見た構造指示図である。FIG. 4 is a structural instruction diagram viewed from another angle of the backlight module of the present invention. 本考案のバックライトモジュールの別構造指示図である。It is another structure instruction | indication figure of the backlight module of this invention. 本考案のバックライトモジュールの光線ルート指示図である。It is a ray route instruction diagram of the backlight module of the present invention. 本考案のバックライトモジュールの別実施例構造分解図である。FIG. 5 is an exploded view of another embodiment of the backlight module according to the present invention.

Explanation of symbols

A 入光側
B 有効発光区域
10 液晶面板
20 ライトガイド
21 反射面
22 光線調節構造
23 中空層
231 光線調節部品
24 照射進入面
25 出光面
30 光学膜片
40 反射面
50 光源 A Incident side
B Effective light emission area
10 LCD faceplate
20 Light guide
21 Reflective surface
22 Light adjustment structure
23 Hollow layer
231 Light adjustment parts
24 Irradiation entrance surface
25 Light emitting surface
30 Optical film pieces
40 Reflective surface
50 light sources

Claims

In the light guide structure composed of a light guide, a plurality of optical film pieces, and a backlight module installed in this order on the light exit surface of each light source,
When one or more hollow layers are formed between the light-incident side of the light guide and the effective light-emitting area, and a light-adjusting component is installed on one side of the hollow layer, the light from the light source passes through the hollow layer of the light guide. A light guide structure characterized in that the light beam route changes, and at the same time, the light dispersion effect is improved by the light beam adjusting component, and the light beam is effectively distributed and emitted.

In the light guide structure composed of a light guide, a plurality of optical film pieces, and a backlight module installed in this order on the light exit surface of each light source,
When one or more hollow layers are formed between the light-incident side of the light guide and the effective light-emitting area, and the light-adjusting components are installed on both sides of the hollow layer, when the light from the light source passes through the hollow layer of the light guide 2. The light guide structure according to claim 1, wherein the light beam route changes, and at the same time, the light dispersion effect is improved by the light beam adjusting component, and the light beam is effectively distributed and emitted.

3. The light guide structure according to claim 1, wherein the light source is installed at an end of the light guide, and a reflector is installed below the light guide.

The light guide has an irradiation entrance surface at one corner, the irradiation entrance surface has a notch shape, and the light source is installed at one corner, so that light enters the light guide from the irradiation entrance surface. 3. The light guide structure according to claim 1, wherein a reflector is installed below.

3. The light guide structure according to claim 1, wherein the light guide forms a light beam adjusting structure on a reflecting surface or a light emitting surface, and the light beam adjusting structure has various geometric shapes.