JPH03261988A - Face type light emitting body - Google Patents
Face type light emitting bodyInfo
- Publication number
- JPH03261988A JPH03261988A JP2062171A JP6217190A JPH03261988A JP H03261988 A JPH03261988 A JP H03261988A JP 2062171 A JP2062171 A JP 2062171A JP 6217190 A JP6217190 A JP 6217190A JP H03261988 A JPH03261988 A JP H03261988A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light emitting
- refractive index
- emitting body
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000945 filler Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 230000003287 optical effect Effects 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract 2
- 230000001788 irregular Effects 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 description 7
- 229920000178 Acrylic resin Polymers 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- -1 alkyl methacrylates Chemical class 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229920006037 cross link polymer Polymers 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000003440 styrenes Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000012673 precipitation polymerization Methods 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は面光源装置に用いる面光源素子に関する。本発
明の面光源素子は液晶表示装置、デイスプレィ等の背面
照明手段として使用されるものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a surface light source element used in a surface light source device. The surface light source element of the present invention is used as a backlighting means for liquid crystal display devices, displays, and the like.
〈従来の技術〉
近年液晶表示装置の背面照明手段として、透明な樹脂を
用いた工、シライト方式が数々提案されている。従来こ
のような面状発光体は発光面の輝度を均一にするため、
発光面の上に薄い空気層を介してポリカーボネート樹脂
製又は延伸アクリル樹脂製の光拡散性シートを設けてい
る。<Prior Art> In recent years, a number of silite methods using transparent resin have been proposed as backlighting means for liquid crystal display devices. Conventionally, in order to make the brightness of the light emitting surface uniform with such planar light emitters,
A light-diffusing sheet made of polycarbonate resin or stretched acrylic resin is provided on the light emitting surface with a thin air layer interposed therebetween.
〈発明が解決しようとする課題〉
しかしながら、このような光拡散性のシートは前記した
ように発光体より少し離してセットされるため、発光体
とシートの隙間に少しでも異物が入るとその異物が輝き
重大な欠点となる。<Problems to be Solved by the Invention> However, as described above, such a light-diffusing sheet is set a little apart from the light emitter, so if even a small amount of foreign matter enters the gap between the light emitter and the sheet, the foreign matter will be removed. shines and becomes a serious drawback.
く課題を解決するための手段〉
本発明は、側面より光を導入し平面部で発光させる面状
発光体において、該発光体の屈折率より低い屈折率を有
する層が、該発光体の全面或いはその一部分に密着して
形成されていることを特徴とする面状発光体に関する。Means for Solving the Problems> The present invention provides a planar light emitter that introduces light from the side surface and emits light from a flat surface, in which a layer having a refractive index lower than the refractive index of the light emitter covers the entire surface of the light emitter. Alternatively, the present invention relates to a planar light emitting body characterized in that it is formed in close contact with a part of the light emitting body.
本発明の側面より光を導入して平面部で発光させる面状
発光体とは、透明材料を用いたエツジライト方式と言わ
れている面状発光体である。面状発光体は、光の出射面
の反対側の面に反射層を備えた透明導光体であり、光の
進行方向に沿って導光体の厚みを変えたもの、出光面の
対面反射層を光源からの距離に応じて薄くしたもの、光
の光路を幾何学的に変えたもの、出光面の光源の近く部
分に出光量を減らすようなものを設けたもの等が使用さ
れる。A planar light emitter that introduces light from an aspect of the present invention and emits light from a flat surface is a planar light emitter that uses a transparent material and is called an edge light type. A planar light emitter is a transparent light guide with a reflective layer on the surface opposite to the light output surface, and the thickness of the light guide changes along the direction of light propagation. Used are those in which the layer is made thinner depending on the distance from the light source, those in which the optical path of the light is geometrically changed, and those in which a part of the light emitting surface near the light source is provided with something that reduces the amount of light emitted.
面状発光体の材質は、透明な樹脂であればあらゆるもの
が使用され、例えばアクリル樹脂、ポリカーボネート樹
脂、ポリスチレン樹脂、アクリロニトリル−スチレン共
重合体、メタクリル酸メチル−スチレン共重合体等が挙
げられる。なかでも透明性等の光学的性能に優れたアク
リル樹脂が特に好ましい、ここでアクリル樹脂とは、メ
タクリル酸メチル重合体及び共重合体を総称していう。Any transparent resin can be used as the material for the planar light emitter, such as acrylic resin, polycarbonate resin, polystyrene resin, acrylonitrile-styrene copolymer, methyl methacrylate-styrene copolymer, and the like. Among them, acrylic resins that have excellent optical properties such as transparency are particularly preferred. Here, acrylic resins collectively refer to methyl methacrylate polymers and copolymers.
これらの樹脂の屈折率は１．４９乃至１．６０である。The refractive index of these resins is 1.49 to 1.60.
本発明に用いられる発光体より低い屈折率を有する層は
発光体の上に密着して設けられ、光源からの光が外に漏
れて発光面の輝度が不均一になるのを防止する。この低
屈折率層の屈折率は発光体の屈折率より低い程よく、０
．０１以上低いものが使用される。屈折率差がこれより
小さければ全反射する部分が極めて狭くなり実用上好ま
しくない。低屈折率層に用いる材料は前記の条件を満た
せば特に限定されないが、なかでもフ・７素或いはケイ
素を含有した重合体が特に好ましい。A layer having a refractive index lower than that of the light emitting body used in the present invention is provided in close contact with the light emitting body to prevent light from the light source from leaking outside and uneven brightness on the light emitting surface. The lower the refractive index of this low refractive index layer is than the refractive index of the light emitter, the better.
．． A value lower than 01 is used. If the refractive index difference is smaller than this, the area undergoing total reflection will be extremely narrow, which is not preferred in practice. The material used for the low refractive index layer is not particularly limited as long as it satisfies the above-mentioned conditions, but among them, polymers containing fluorine or silicon are particularly preferred.
例えば、フッ素を含有した重合体としては、エチレン、
プロピレン、アルキルアクリレート、アルキルメタクリ
レート等重合性七ツマ−の水素の一部をフッ素で置き換
えたものの重合体又は共重合体及びそれらの重合体を透
明性を向上させるために変成したもの等が挙げらる。又
、ケイ素を含有した重合体としては、ポリシロキサン系
重合体が挙げられる。For example, fluorine-containing polymers include ethylene,
Examples include polymers or copolymers of polymerizable hexamers such as propylene, alkyl acrylates, and alkyl methacrylates in which part of the hydrogen is replaced with fluorine, and those polymers modified to improve transparency. Ru. Furthermore, examples of the silicon-containing polymer include polysiloxane polymers.
本発明の面状発光体は発光面の輝度を均一にするため低
屈折率層に光を拡散させる充填材を含有していることが
好ましい。充填材としては、光を拡散させる無機物或い
は架橋重合体を用いることが出来る。無機物としては、
シリカ、タルク、ガラス粉末、炭酸カルシウム、硫酸バ
リウム、酸化チタン、水酸化アルミニウム等が挙げられ
る。架橋重合体としてはアクリル酸メチル、アクリル酸
エチル等のアクリル酸エステル類、メタクリル酸メチル
等のメタクリル酸エステル類、スチレン、スチレン誘導
体等のスチレン類等の重合性単量体及びこれらと共重合
可能なビニール基等の二重結合を二つ以上含んだ架橋性
単量体をサスベンジ３ン重合、エマルジｓン重合、マイ
クロサスペンション重合、或いは沈澱重合等の重合方法
により重合させて得られる重合体を用いる。In order to make the luminance of the light emitting surface uniform, the planar light emitter of the present invention preferably contains a filler that diffuses light in the low refractive index layer. As the filler, an inorganic material or a crosslinked polymer that diffuses light can be used. As an inorganic substance,
Examples include silica, talc, glass powder, calcium carbonate, barium sulfate, titanium oxide, and aluminum hydroxide. Crosslinked polymers include acrylic esters such as methyl acrylate and ethyl acrylate, methacrylic esters such as methyl methacrylate, styrenes such as styrene and styrene derivatives, and polymerizable monomers that can be copolymerized with these. A polymer obtained by polymerizing a crosslinkable monomer containing two or more double bonds such as a vinyl group by a polymerization method such as suspension polymerization, emulsion polymerization, microsuspension polymerization, or precipitation polymerization. use
光拡散材を含んだ低屈折率層を用いる場合にはそれを単
独で低屈折率層としてもよいが、光拡散材が直接導光体
に接触するのを避けるために、拡散材を含まない低屈折
率層を中間に介して発光体上に形成することも出来る。If a low refractive index layer containing a light diffusing material is used, it may be used alone as a low refractive index layer, but in order to avoid direct contact of the light diffusing material with the light guide, the low refractive index layer may not contain the diffusing material. It is also possible to form a low refractive index layer on the light emitting body with an intermediate layer interposed therebetween.
本発明の面状発光体は発光面の輝度を均一にするため低
屈折率層の表面に微細な凹凸を形成することも出来る。In the planar light emitter of the present invention, fine irregularities can be formed on the surface of the low refractive index layer in order to make the luminance of the light emitting surface uniform.
表面の微細な凹凸は光の拡散をさらに良くして、発光体
の輝度を均一にするのに特に効果がある。The fine irregularities on the surface are particularly effective in further improving light diffusion and making the brightness of the light emitter uniform.
〈実施例〉
以下、本発明の面状発光体について、その具体的な構成
を図面に基づいて詳細に説明する。<Example> Hereinafter, the specific structure of the planar light emitter of the present invention will be described in detail based on the drawings.
第３図は従来のエツジライト方式の面状発光体の断面図
である。１は蛍光灯等の光源、２はそのリフレクタ−１
５は導光体、４は光拡散板、３は隙間、６は光の反射層
である。導光体に入射した光は全反射して導光体内を伝
わり、反射Ｆ！６で乱反射して出射面から光が出射され
る。このとき、隙間３に小さな異物が入ると異物で光が
散乱され特に目立つようになる。FIG. 3 is a sectional view of a conventional edge-light type planar light emitter. 1 is a light source such as a fluorescent lamp, 2 is its reflector-1
5 is a light guide, 4 is a light diffusing plate, 3 is a gap, and 6 is a light reflecting layer. The light incident on the light guide is totally reflected and transmitted inside the light guide, resulting in reflection F! 6, the light is diffusely reflected and emitted from the exit surface. At this time, if a small foreign object enters the gap 3, the light will be scattered by the foreign object and become particularly noticeable.
第１図は本発明の面状発光体の一つを例示したものであ
る。７は光の拡散材を含んだ低屈折率層である。低屈折
率層７は導光体５に密着して設けられ、隙間等はないた
め異物等が入ることはない。FIG. 1 illustrates one of the planar light emitters of the present invention. 7 is a low refractive index layer containing a light diffusing material. The low refractive index layer 7 is provided in close contact with the light guide 5, and there are no gaps, so that no foreign matter can enter.
第２図は本発明の別の実施形態であり、光拡散板の表面
に微細な凹凸を設けて光の拡散をさらに改良したもので
ある。FIG. 2 shows another embodiment of the present invention, in which fine irregularities are provided on the surface of the light diffusing plate to further improve light diffusion.
実施例１゜
（１）導光体の作成
厚さ６■ｍの透明アクリル樹脂板（住友化学工業（株）
Ｉスミベ・クス■＃ＯＯＯ）を２２０蒙・Ｘ１６０＋ｍ
の長方形に切断して２２０ｍｍの２辺を常法により研磨
した。さらに１６０ｍａ＋の２辺は粘着剤骨のアルミニ
ウム蒸着膜付きポリエステルフィルムを貼り付けた。さ
らに平面部分の一方の面に中央部が密になるように徐々
に変化させて白色インキでドツト印刷を行った。Example 1゜(1) Creation of light guide 6 m thick transparent acrylic resin plate (Sumitomo Chemical Co., Ltd.)
I Sumibe Kusu■#OOO) 220 mon x 160 + m
It was cut into a rectangle, and two sides of 220 mm were polished by a conventional method. Further, on two sides of 160 ma+, a polyester film with an aluminum vapor-deposited adhesive film was pasted. Furthermore, dot printing was performed on one side of the flat part using white ink, gradually changing the density so that the center part became denser.
（２）面状発光体の作成
上記の導光体の処理していない面にシリコン系ハードコ
ート液（スミユニＳ４Ｌ ：住友化学４゜
工業（株）製）を塗布した後に、該コート液に硫酸バリ
ウム微粉末を分散させた光拡散材入りコート液を塗布し
て８０ Ｃで２時間硬化させた。(2) Creation of a planar light emitter After applying a silicone-based hard coat liquid (Sumiuni S4L: manufactured by Sumitomo Chemical 4゜ Industries, Ltd.) to the untreated surface of the above light guide, add sulfuric acid to the coat liquid. A coating liquid containing a light diffusing material in which fine barium powder was dispersed was applied and cured at 80 C for 2 hours.
この導光体の裏面に白色のポリエステルフィルムを貼り
付けて２２０＋ｓ＋の辺からアルミニウム製のりフレフ
タ−を付けた直径７ｍｍのランプ（スタンレー電気（株
）ｍｌ）を点灯できるようにして本発明の面状発光体を
得た。A white polyester film is pasted on the back side of this light guide so that a 7mm diameter lamp (Stanley Electric Co., Ltd. ml) with an aluminum glue flap can be lit from the 220+s+ side to achieve the surface shape of the present invention. A luminous body was obtained.
得られた面状発光体はランプを点灯したとき異物等の不
良による輝度の不均一はなく、全体に均質な良好な発光
状態を示した。When the lamp was turned on, the obtained planar light-emitting body showed no unevenness in brightness due to defects such as foreign matter, and exhibited a good light-emitting condition that was uniform throughout.
第１図及び第２図は本発明の面状発光体の、第３図は従
来のエツジライト方式の面状発光体の断面図を表す。
１、光源（蛍光灯等）
リフレクタ−
隙間
光拡散板
導光体
光の反射層
光の拡散材を含んだ低屈折率層
表面に微細な凹凸を有する低屈折率層1 and 2 are cross-sectional views of a planar light emitter of the present invention, and FIG. 3 is a cross-sectional view of a conventional edge-light type planar light emitter. 1. Light source (fluorescent lamp, etc.) Reflector - Gap light diffuser plate Light guide Light reflective layer Low refractive index layer containing light diffusing material Low refractive index layer with fine irregularities on the surface
Claims (3)
体において、該発光体の屈折率より低い屈折率を有する
層が、該発光体の全面または一部分に密着して形成され
ていることを特徴とする面状発光体。(1) In a planar light emitter that introduces light from the side and emits light from a flat surface, a layer having a refractive index lower than that of the light emitter is formed in close contact with the entire surface or a part of the light emitter. A planar light emitter characterized by:
填材を含有している請求項１記載の面状発光体。(2) The planar light emitter according to claim 1, wherein the layer having a low refractive index contains a filler that diffuses light.
が形成されている請求項１記載の面状発光体。(3) The planar light-emitting body according to claim 1, wherein fine irregularities are formed on the surface of the layer having a low refractive index.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2062171A JPH03261988A (en) | 1990-03-12 | 1990-03-12 | Face type light emitting body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2062171A JPH03261988A (en) | 1990-03-12 | 1990-03-12 | Face type light emitting body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03261988A true JPH03261988A (en) | 1991-11-21 |
Family
ID=13192410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2062171A Pending JPH03261988A (en) | 1990-03-12 | 1990-03-12 | Face type light emitting body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03261988A (en) |
Cited By (15)
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|---|---|---|---|---|
| JPH09294U (en) * | 1993-08-20 | 1997-05-20 | ミユキ精機株式会社 | Backlight for panel |
| JP2000214313A (en) * | 1999-01-22 | 2000-08-04 | Elf Atochem Sa | Light diffusion composite panel |
| JP2001343532A (en) * | 2000-03-31 | 2001-12-14 | Mitsubishi Electric Corp | Front-light, reflective liquid crystal display device and portable information terminal |
| JP2003149642A (en) * | 2001-11-13 | 2003-05-21 | Matsushita Electric Works Ltd | Front light for liquid crystal |
| US6636283B2 (en) | 2000-03-31 | 2003-10-21 | Mitsubishi Denki Kabushiki Kaisha | Front light, reflective liquid crystal display device and personal digital assistant |
| WO2004055429A1 (en) * | 2002-12-18 | 2004-07-01 | Sharp Kabushiki Kaisha | Light guide plate, illuminating device using same, area light source and display |
| KR100624046B1 (en) * | 2004-03-18 | 2006-09-19 | 특허법인 맥 | Backlight unit |
| JP2009205876A (en) * | 2008-02-26 | 2009-09-10 | Asahi Rubber Inc | Light guide film, and method of manufacturing the same |
| JP2010010053A (en) * | 2008-06-30 | 2010-01-14 | Fuji Xerox Co Ltd | Light guide, beam radiating device, static eliminator, image formation structure object, image forming device, and method of manufacturing light guide |
| JP2010161052A (en) * | 2008-12-10 | 2010-07-22 | Kuraray Co Ltd | Light guide plate, and manufacturing method of light guide plate |
| DE10228521B4 (en) * | 2001-07-10 | 2017-04-20 | Lg Display Co., Ltd. | Backlight assembly for a liquid crystal device |
| JP2017215549A (en) * | 2016-06-02 | 2017-12-07 | セイコーエプソン株式会社 | Wavelength conversion element, illumination device, and projector |
| CN108279534A (en) * | 2015-04-16 | 2018-07-13 | 青岛海信电器股份有限公司 | A kind of side entering type display module and display device |
| JP2021101437A (en) * | 2018-02-02 | 2021-07-08 | 日東電工株式会社 | Film for led backlight and led backlight |
| JPWO2021261567A1 (en) * | 2020-06-25 | 2021-12-30 |
-
1990
- 1990-03-12 JP JP2062171A patent/JPH03261988A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09294U (en) * | 1993-08-20 | 1997-05-20 | ミユキ精機株式会社 | Backlight for panel |
| JP2000214313A (en) * | 1999-01-22 | 2000-08-04 | Elf Atochem Sa | Light diffusion composite panel |
| JP2001343532A (en) * | 2000-03-31 | 2001-12-14 | Mitsubishi Electric Corp | Front-light, reflective liquid crystal display device and portable information terminal |
| US6636283B2 (en) | 2000-03-31 | 2003-10-21 | Mitsubishi Denki Kabushiki Kaisha | Front light, reflective liquid crystal display device and personal digital assistant |
| DE10228521B4 (en) * | 2001-07-10 | 2017-04-20 | Lg Display Co., Ltd. | Backlight assembly for a liquid crystal device |
| JP2003149642A (en) * | 2001-11-13 | 2003-05-21 | Matsushita Electric Works Ltd | Front light for liquid crystal |
| WO2004055429A1 (en) * | 2002-12-18 | 2004-07-01 | Sharp Kabushiki Kaisha | Light guide plate, illuminating device using same, area light source and display |
| KR100624046B1 (en) * | 2004-03-18 | 2006-09-19 | 특허법인 맥 | Backlight unit |
| JP2009205876A (en) * | 2008-02-26 | 2009-09-10 | Asahi Rubber Inc | Light guide film, and method of manufacturing the same |
| JP2010010053A (en) * | 2008-06-30 | 2010-01-14 | Fuji Xerox Co Ltd | Light guide, beam radiating device, static eliminator, image formation structure object, image forming device, and method of manufacturing light guide |
| JP2010161052A (en) * | 2008-12-10 | 2010-07-22 | Kuraray Co Ltd | Light guide plate, and manufacturing method of light guide plate |
| CN108279534A (en) * | 2015-04-16 | 2018-07-13 | 青岛海信电器股份有限公司 | A kind of side entering type display module and display device |
| JP2017215549A (en) * | 2016-06-02 | 2017-12-07 | セイコーエプソン株式会社 | Wavelength conversion element, illumination device, and projector |
| JP2021101437A (en) * | 2018-02-02 | 2021-07-08 | 日東電工株式会社 | Film for led backlight and led backlight |
| JPWO2021261567A1 (en) * | 2020-06-25 | 2021-12-30 | ||
| WO2021261567A1 (en) * | 2020-06-25 | 2021-12-30 | シチズン電子株式会社 | Light-emitting device |
| JP2023001231A (en) * | 2020-06-25 | 2023-01-04 | シチズン電子株式会社 | Light-emitting device |
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