JP3210322B2 - Surface light source panel for edge light - Google Patents
Surface light source panel for edge lightInfo
- Publication number
- JP3210322B2 JP3210322B2 JP20448090A JP20448090A JP3210322B2 JP 3210322 B2 JP3210322 B2 JP 3210322B2 JP 20448090 A JP20448090 A JP 20448090A JP 20448090 A JP20448090 A JP 20448090A JP 3210322 B2 JP3210322 B2 JP 3210322B2
- Authority
- JP
- Japan
- Prior art keywords
- light source
- substrate
- sheet
- layer
- transparent resin
- 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.)
- Expired - Lifetime
Links
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Screen Printers (AREA)
- Liquid Crystal (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Planar Illumination Modules (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は，液晶バックライト，照明ディスプレイ，照
明サイン，照明体等の各種面光源装置に用いられるエッ
ジライト用面光源パネルに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface light source panel for an edge light used in various surface light source devices such as a liquid crystal backlight, a lighting display, a lighting sign, and a lighting body.
この種エッジライト用面光源パネルは，一般に一側表
面に，例えばスクリーン印刷，ショットブラストによる
微細網点状等の乱反射層を形成したアクリル樹脂等光透
過性に優れた透明樹脂基板を用い，この基盤のエッジ面
に蛍光管，冷陰極管等の一次光源を近接して臨ませて面
光源装置とし，一次光源からの入射光により面光源パネ
ルの全体を可及的に高輝度且つ均一に照明すべきものと
される。This type of surface light source panel for edge light generally uses a transparent resin substrate with excellent light transmittance, such as acrylic resin, on one side surface of which an irregular reflection layer such as fine halftone dots formed by screen printing or shot blasting is formed. A primary light source, such as a fluorescent tube or a cold cathode tube, is placed close to the edge surface of the substrate to form a surface light source device, and the entire surface light source panel is illuminated as uniformly as possible with incident light from the primary light source. It should be.
透明樹脂基板には，このため，例えば乳白色ポリエス
テル樹脂製のフィルム状シートによる，照明面側の拡散
シート，背面側の反射シートを，透明樹脂基板の全面を
被覆するよう配設し，拡散シートにより乱反射面の表出
を抑止するとともに乱反射光を拡散せしめて主に均一性
向上に，反射シートにより背面側への光透過による損失
を抑止して輝度向上にそれぞれ寄与せしめるものとされ
ている。For this purpose, for the transparent resin substrate, for example, a diffusion sheet on the lighting surface side and a reflection sheet on the back surface, such as a film sheet made of milky white polyester resin, are disposed so as to cover the entire surface of the transparent resin substrate. It is said that the surface of the irregular reflection surface is suppressed and the diffuse reflection light is diffused to mainly improve the uniformity, and the reflection sheet is used to suppress the loss due to the light transmission to the back side, thereby contributing to the improvement of the brightness.
拡散シート，反射シートは透明樹脂基板を基準にする
とその一側表面にいずれか一方を設ける，例えば複数の
基板を積層状に用いる場合と，両表面に双方を設ける，
例えば単一の基板を用いたり，また積層状に設けるにし
ても基板間に更に拡散シートを介設する場合とがある
が，この配設は透明樹脂基板に一体的に接合するのが簡
便であり，一般には透明樹脂基板とこれらシート間に両
面粘着テープを介設せしめるようにしたもの又は超音波
接着手段により所定個所をスポット的に接合するように
したものが知られている。One of the diffusion sheet and the reflection sheet is provided on one surface of the transparent resin substrate based on the transparent resin substrate. For example, when a plurality of substrates are used in a stacked state, both are provided on both surfaces.
For example, a single substrate may be used, or a diffusion sheet may be further interposed between the substrates even if they are provided in a laminated form. However, this arrangement is simple and integrally joined to the transparent resin substrate. In general, a double-sided adhesive tape is interposed between a transparent resin substrate and these sheets, or a predetermined portion is spot-joined by ultrasonic bonding means.
然るに両面粘着テープによる場合，これが照明面に掛
ったりすることのないように，例えば数mm以下の細幅の
ものを用いることが必要となる一方で，シートにズレや
捩れ等が生じないようにすることも必要となるので，一
般的には機械化が困難で人手作業に依存せざるを得ず，
作業が煩雑であるとともに生産効率が悪く，面光源パネ
ルの量産に不適である。However, when using double-sided adhesive tape, it is necessary to use a narrow tape of, for example, several mm or less, so that it does not hang on the lighting surface. In general, it is difficult to mechanize and must rely on manual work.
The work is complicated, the production efficiency is poor, and it is not suitable for mass production of surface light source panels.
また超音波接着による場合は，量産に好適であるが，
スポット状の接合になることによって，例えば長方形の
透明樹脂基板の４隅においてこの接合を施すと，特に3m
m程度以下に薄肉化した基板を用いたとき，シート材と
の熱膨張率の不一致に起因して，一次光源の発熱や，例
えば自動車内における使用等設置乃至使用場所の雰囲気
温度等により波状等にこの透明樹脂基板が変形すること
がある。またこの変形を防止するためには，例えば一側
２隅における接合を行えばよいが，この場合はシートが
基板上に載置状とされるので，基板とシートとの間に微
細な塵埃が入り，静電的にこれが基板に吸着されるとい
う不良を招くことがあり，歩留の低下原因となる。Ultrasonic bonding is suitable for mass production,
By forming a spot-shaped bond, for example, if this bond is made at the four corners of a rectangular transparent resin
When a substrate thinned to about m or less is used, due to the mismatch of the thermal expansion coefficient with the sheet material, the heat generation of the primary light source and the corrugated In some cases, this transparent resin substrate may be deformed. In order to prevent this deformation, for example, it is only necessary to perform bonding at two corners on one side. In this case, since the sheet is placed on the substrate, fine dust is generated between the substrate and the sheet. This may cause a defect in which the substrate is electrostatically adsorbed on the substrate, which causes a reduction in yield.
本発明は，かかる問題に鑑みてなされたもので，その
目的とする処は，量産に好適にして商品実用上の問題を
解消したシートの接合を可能としたエッジライト用面光
源パネルを提供するにある。The present invention has been made in view of such a problem, and an object of the present invention is to provide a surface light source panel for edge light that is suitable for mass production and that enables joining of sheets that solves problems in practical use of products. It is in.
〔課題を解決するための手段〕 本発明は，透明樹脂基板とシート或いは透明樹脂基板
を包覆するシートにおける接合を，スクリーン印刷によ
る硬化インク層又は硬化樹脂層を介在し或いは硬化イン
ク層又は硬化樹脂層を両面に有する接合プレート又は透
明樹脂基板嵌着用にして硬化インク層又は硬化樹脂層を
シートとの対向面に有する接合枠を介在して精密且つ細
幅状に行うようにしたものであって，即ち請求項１に記
載の発明を，乱反射層を形成した透明樹脂基板の対向端
面側の両端部を含む外周側複数端部と，該基板を被覆す
る拡散シート又は反射シートとを，スクリーン印刷によ
る細帯状硬化インク層又は硬化樹脂層を介在せしめて一
体的に接合してなることを特徴とするエッジライト用面
光源パネルとし，請求項２に記載の発明を乱反射層を形
成した透明樹脂基板を拡散シートと反射シートにより包
覆せしめるとともに該基板の対向端面側の両端部を含む
外周側複数端部において拡散シートと反射シートとをス
クリーン印刷による細帯状硬化インク層又は硬質樹脂層
を介在せしめて一体的に接合してなることを特徴とする
エッジライト用面光源パネルとし，請求項３に記載の発
明を，乱反射層を形成した透明樹脂基板の対向端面側の
両端部分を含む外周側複数端部と，該基板を被覆する拡
散シート又は反射シートとを，表裏両面にスクリーン印
刷した硬化インク層又は硬化樹脂層を有する細帯状の接
合プレートの介装配置又は上記拡散シート乃至反射シー
トとの対向面にスクリーン印刷した硬化インク層又は硬
化樹脂層を有する細帯状コ字型の接合枠の上記基板への
嵌着配置によって上記硬化インク層又は硬化樹脂層を介
在せしめて一体的に接合してなることを特徴とするエッ
ジライト用面光源パネルとし，これらをそれぞれ発明の
要旨として上記課題解決の手段としたものである。[Means for Solving the Problems] The present invention provides a method for joining a transparent resin substrate and a sheet or a sheet enclosing the transparent resin substrate by interposing a cured ink layer or a cured resin layer by screen printing or by setting a cured ink layer or a cured resin layer. A bonding plate having a resin layer on both surfaces or a transparent resin substrate is fitted to the resin plate, and the cured ink layer or the cured resin layer is precisely and narrowly formed through a bonding frame having a surface facing the sheet. In other words, the invention according to claim 1, comprising: a transparent resin substrate on which an irregular reflection layer is formed, a plurality of outer peripheral ends including both ends on the opposite end surface side, and a diffusion sheet or a reflective sheet covering the substrate, A surface light source panel for an edge light characterized by being integrally joined by interposing a thin band-shaped cured ink layer or a cured resin layer by printing. The transparent resin substrate on which the reflection layer is formed is covered with a diffusion sheet and a reflection sheet, and the diffusion sheet and the reflection sheet are screen-printed at a plurality of outer peripheral edges including both end portions on the opposite end face side of the substrate by screen printing. 4. A surface light source panel for an edge light, comprising a layer or a hard resin layer interposed and integrally joined together, wherein the invention according to claim 3 is characterized in that: A narrow band-shaped bonding plate having a cured ink layer or a cured resin layer on which the front and back sides are screen-printed with a plurality of outer peripheral ends including both end portions, and a diffusion sheet or a reflection sheet covering the substrate; Fitting and disposing a narrow band-shaped U-shaped joining frame having a cured ink layer or a cured resin layer screen-printed on a surface facing the diffusion sheet or the reflection sheet to the substrate The surface light source panel for edge light is characterized by being integrally joined by interposing the cured ink layer or the cured resin layer, and these are used as means for solving the above problems as the gist of the invention. .
本発明にあっては，透明樹脂基板と拡散シート又は反
射シート，或いはこれらシート間がスクリーン印刷，接
合プレート又は接合枠の幅に応じた細幅状に接合されて
いるので，精密にして所定の接合強度が得られる。In the present invention, since the transparent resin substrate and the diffusion sheet or the reflection sheet, or these sheets are joined by screen printing, in a narrow width corresponding to the width of the joining plate or the joining frame, the predetermined precision is required. Bonding strength is obtained.
また接合は透明樹脂基板の対向端部を含む複数端部に
おいてなされているので，一次光源の発熱や雰囲気温度
等を受けても，基板とシートとを接合したものにあって
も，これらの間の膨張負荷が分散均一化され，波状等の
変形を可及的に防止し，またシートとシートとを接合し
たものにあっては，基板と分離されていることによりこ
のような変形の可能性がそれ自体ない。Also, since the bonding is made at a plurality of ends including the opposite end of the transparent resin substrate, regardless of whether the primary light source generates heat, ambient temperature, etc., or whether the substrate and the sheet are bonded together, The expansion load is dispersed and uniformized, and the deformation such as wavy is prevented as much as possible. In the case where the sheets are joined, the possibility of such deformation is increased by separating from the substrate. Is not in itself.
以下実施例を示す図面に従って更に本発明を説明すれ
ば，第１図及び第２図において,Aは面光源パネル,Bは面
光源装置において設けられる冷陰極管とした一次光源,1
は面光源パネルＡにおける透明樹脂基板,4は拡散シー
ト,5は反射シートを示す。The present invention will be further described with reference to the drawings showing an embodiment. In FIGS. 1 and 2, A is a surface light source panel, B is a primary light source as a cold cathode tube provided in a surface light source device,
Denotes a transparent resin substrate in the surface light source panel A, 4 denotes a diffusion sheet, and 5 denotes a reflection sheet.
本例における面光源パネルＡは，例えばラップトップ
型コンピュータ，ワードプロセッサ等に内蔵し得るよう
に，特に薄肉のものとして構成してあり，従って，透明
樹脂基板１は,3mmの肉厚のものを単一枚用い，これに各
75μｍの拡散シート４及び反射シート５を用いたものと
してある。The surface light source panel A in this example is configured to be particularly thin so that it can be built in, for example, a laptop computer, a word processor, or the like. Therefore, the transparent resin substrate 1 has a thickness of 3 mm. Use one piece and add each
It is assumed that a 75 μm diffusion sheet 4 and a reflection sheet 5 are used.
透明樹脂基板１は，例えば135×200mmの縦横寸法を有
するアクリル透明樹製とし，その非照明面側をなす一側
表面（第１図においては下面に該る）には，数mm幅の外
周側端部における接合代２を残した前面に，無段階変化
状パターンによる透光性高密度網点乱反射層３をスクリ
ーン印刷により印刷形成してある。The transparent resin substrate 1 is made of, for example, acrylic transparent wood having a vertical and horizontal dimension of 135 × 200 mm, and its one side surface (which corresponds to the lower surface in FIG. 1) on the non-illumination surface side has an outer periphery of several mm in width. A translucent high-density halftone irregularly reflecting layer 3 having a stepless pattern is formed by screen printing on the front surface of the side end except for the bonding margin 2.
このとき基板１の各端面は鏡面仕上げを行い，一次光
源光の入射及び入射光の反射効率を高めてある。At this time, each end face of the substrate 1 is mirror-finished to enhance the incidence of primary light source light and the reflection efficiency of the incident light.
なお，網点乱反射層３は，一次光源17側から離隔方向
に網点面積比を20〜100％の範囲で平行無段階状に変化
させ，更に反射光による輝度の不均一性を防止するた
め，中央より離隔端部寄りの中間位置においてこの面積
比が最大になるようにしてある。The halftone dot irregular reflection layer 3 changes the halftone dot area ratio in the direction away from the primary light source 17 in the range of 20 to 100% in a parallel and stepless manner, and further prevents nonuniform brightness due to reflected light. The area ratio is maximized at an intermediate position closer to the separated end portion from the center.
一方，本例における拡散シート４及び反射シート５
は，いずれも上記75μｍ厚の，一般に例えばコンピュー
タ読取り用カードに用いられる腰強フィルム状の乳白色
不透明ポリエステルシート（帝人株式会社「ユポ」）で
コーティング処理したものを使用して，透明樹脂基板１
の照明面側で乱反射光の拡散，背面側で反射を行うよう
にしてある。On the other hand, the diffusion sheet 4 and the reflection sheet 5
Are coated with a 75 μm thick milky white opaque polyester sheet ("Yupo", Teijin Limited) generally in the form of a strong film used for, for example, a card for computer reading.
The diffused light is diffused on the illumination surface side and reflected on the back side.
このとき上記乱反射層３を形成した透明樹脂基板１の
対向端面側の両端部を含む外周側複数端部，本例にあっ
ては四周端部と，該基板１を被覆する拡散シート４又は
反射シート5,本例にあってはその双方とを，スクリーン
印刷による細帯状硬化インク層６を介在せしめて一体的
に接合してあり，本例にあって上記硬化インク層６は，
これを各端部長手方向全長に亘り一連としてその一体的
な接合を行ってある。At this time, a plurality of outer peripheral ends including the opposite end surfaces of the transparent resin substrate 1 on which the irregular reflection layer 3 is formed, in this example, four peripheral ends, and a diffusion sheet 4 or a reflective sheet covering the substrate 1. The sheet 5, and in this example, both are integrally joined together with a strip-shaped cured ink layer 6 interposed therebetween by screen printing. In this example, the cured ink layer 6 is
This is integrated as a series over the entire length of each end portion in the longitudinal direction, and is integrally joined.
本例のこの接合には，熱可塑性樹脂をインクビヒクル
に添加せしめてある熱乾燥用の印刷インクを用いて，第
１図に示すように拡散シート４及び反射シート５側の四
周に，それぞれ１乃至2mmの細帯状のスクリーン印刷を
施し，このスクリーン印刷後に，透明樹脂基板１とこれ
らシート4,5とを定位置に積層し，然る後加熱プレスに
よる接着を施すことによってこの接合を行ったものとし
てある。In this joining of the present embodiment, a printing ink for heat drying in which a thermoplastic resin is added to an ink vehicle is used, and as shown in FIG. A screen printing of a narrow band shape of 2 mm to 2 mm is performed, and after this screen printing, the transparent resin substrate 1 and the sheets 4 and 5 are laminated in a fixed position, and then the bonding is performed by applying a heat press. There are things.
一方，第３図及び第４図は，他の例を示す実施例であ
り，本例における面光源パネルＢは，上記乱反射層３を
形成した透明樹脂基板１を拡散シート４と反射シート７
により包覆せしめるとともに該基板１の対向端面側の両
端部を含む外周側複数端部に，本例にあっては四周端部
において拡散シート４と反射シート７とをスクリーン印
刷による細帯状硬化インク層６を介在せしめて一体的に
接合したものとしてある。On the other hand, FIGS. 3 and 4 show another embodiment. In this embodiment, the surface light source panel B comprises a transparent resin substrate 1 on which the irregular reflection layer 3 is formed and a diffusion sheet 4 and a reflection sheet 7.
And the diffusion sheet 4 and the reflection sheet 7 at the four peripheral ends in this example at the four peripheral ends including both ends on the opposing end surface side of the substrate 1. It is assumed that the layers 6 are interposed and integrally joined.
本例では，同じく75μｍ厚のポリエステルシートであ
る反射シート７の端部を、一次光源側を除いて逆Ｌ字状
に立上げ，底面８との間に透明樹脂基板１を抱持せし
め、透明樹脂基板１の照明面側表面である外周の非光源
側３端部上において面内方向に折曲した折返し条９…を
拡散シート４との接合部分として，これら拡散シート４
と反射シート７とを，同じくスクリーン印刷による硬化
インク層６で端部長手方向全長に亘って細帯状一連に接
合したものとしてある。In this example, the end of the reflection sheet 7, which is also a 75 μm-thick polyester sheet, is raised in an inverted L-shape excluding the primary light source side, and the transparent resin substrate 1 is held between the reflection sheet 7 and the bottom surface 8. On the three non-light source side ends of the outer periphery, which is the illumination surface side surface of the resin substrate 1, the folds 9...
And the reflection sheet 7 are joined together in a narrow strip shape over the entire length in the longitudinal direction of the end portion by the cured ink layer 6 similarly formed by screen printing.
このとき，その接合は，拡散シート４の裏面側に上記
と同様のスクリーン印刷を施し，或いは，折曲前又は折
曲後の反射シート７側にこのスクリーン印刷を施し，然
る後に受台を挿入して加熱プレスによる接着を施すこと
により１側開口の袋状にしてあり，この袋状とした上で
透明樹脂基板１を挿入するようにして行ったものとして
ある。At this time, the same screen printing is performed on the back side of the diffusion sheet 4 as described above, or this screen printing is performed on the reflection sheet 7 side before or after folding, and then the pedestal is mounted. The bag is inserted into the bag and bonded by a heating press to form a bag with one opening. The bag is formed and the transparent resin substrate 1 is inserted.
第５図及び第６図は更に他の例を示す実施例で，本例
における面光源パネルＣは、その上記透明樹脂基板１と
拡散シート４又は反射シート５とを、表裏両面にスクリ
ーン印刷した硬化インク層又は硬化樹脂層14を有する細
帯状の接合プレート10,11の介装配置又は上記拡散シー
ト４乃至反射シート５との対向面にスクリーン印刷した
硬化インク層又は硬化樹脂層14を有する細帯状コ字型の
接合枠12の上記基板への嵌合配置によって上記硬化イン
ク層又は硬化樹脂層14を介在せしめて一体的に接合した
ものとしてある。FIGS. 5 and 6 show still another embodiment. In the surface light source panel C in this embodiment, the transparent resin substrate 1 and the diffusion sheet 4 or the reflection sheet 5 are screen-printed on both sides. The interposed arrangement of the strip-shaped joining plates 10 and 11 having the cured ink layer or the cured resin layer 14 or the thin plate having the cured ink layer or the cured resin layer 14 screen-printed on the surface facing the diffusion sheet 4 to the reflection sheet 5. The band-shaped U-shaped joining frame 12 is fitted to the above-mentioned substrate and integrally joined with the above-mentioned cured ink layer or cured resin layer 14 interposed therebetween.
即ち，本例の接合プレート10,11及び接合枠12は,0.3m
mの肉厚による，細幅にして一連の薄肉樹脂板を用いて
あり，接合プレート10,11の表裏両面及び接合枠12にお
ける透明樹脂基板１のシート4,5対向面、即ち垂直部か
ら面内方向に向かう水平の上下折曲条13の各シート4,5
との接合部分をなす対向面側にそれぞれ硬化樹脂層14を
具備したものとし、本例にあっては該接合プレート10,1
1及び接合枠12の双方を用いて、これらの硬化樹脂層14
を介在することによって上記透明樹脂基板1,拡散シート
４及び反射シート５を一体的に接合したものとしてあ
る。That is, the joining plates 10 and 11 and the joining frame 12 in this example are 0.3 m
A series of thin resin plates of narrow width with a thickness of m are used. The front and back surfaces of the joining plates 10 and 11 and the surface of the joining frame 12 facing the sheets 4 and 5 of the transparent resin substrate 1, that is, the surface from the vertical portion Each sheet 4 and 5 of the horizontal vertical bent strip 13 going inward
It is assumed that each of the bonding plates 10 and 1 is provided with a cured resin layer 14 on the opposing surface side forming a bonding portion with the bonding plate.
1 and the joining frame 12, these cured resin layers 14 are used.
, The transparent resin substrate 1, the diffusion sheet 4 and the reflection sheet 5 are integrally joined.
なお，本例における透明樹脂基板1,拡散シート4,反射
シート５は第１図に示したのものと変らないが，上記硬
化インク層又は硬化樹脂層、本例にあって硬化樹脂層14
は，熱可塑性樹脂を塗布することによって上記接合プレ
ート10,11及び接合枠12に具備したものとしてある。The transparent resin substrate 1, the diffusion sheet 4, and the reflection sheet 5 in this example are the same as those shown in FIG. 1, but the above-described cured ink layer or cured resin layer, and in this example, the cured resin layer 14
Is provided on the joining plates 10, 11 and the joining frame 12 by applying a thermoplastic resin.
この面光源パネルＣの形成は，例えば第６図に示す如
く，表面に数ヶ所のエア吸引孔16を開設した段差立上り
状の平面受台15を用い，この受台15に透明樹脂基板１
を，外周側各端部突出状に載置して，エア吸引によって
固定した後，各突出端部に受台15端縁を終端とする如く
に，それぞれ上記樹脂を塗布した接合枠12を押圧嵌合し
て上記嵌着する一方，一次光源側端部にあっては両面に
同じく樹脂を塗布した接合プレート10を載置した後，反
射シート５を降下積層状に重ねて熱ローラープレスによ
る接着の接合を行い，その後反射シート５を付した状態
で透明樹脂基板１を反転し，更に一次光源17側端部に同
様な接合プレート11の載置と拡散シート４の配置及び熱
ローラープレスによる接着の接合を行うものとしてあ
る。For example, as shown in FIG. 6, the surface light source panel C is formed by using a flat pedestal 15 having a stepped shape with several air suction holes 16 formed on the surface thereof.
Are placed on the outer peripheral side at the end protruding shape, and fixed by air suction. Then, the joining frame 12 coated with the above resin is pressed on each protruding end so that the end of the cradle 15 ends. On the other hand, at the primary light source side end, a bonding plate 10 coated with the same resin on both surfaces is placed, and then the reflection sheets 5 are stacked in a descending lamination form and bonded by a hot roller press. After that, the transparent resin substrate 1 is turned over with the reflection sheet 5 attached, and a similar bonding plate 11 is placed on the end of the primary light source 17 side, the diffusion sheet 4 is arranged, and bonding is performed by a hot roller press. Are to be joined.
図示した例は以上のとおりとしたが，本発明にあっ
て，一体的な接合には硬化手段を施すことができる印刷
インク及び樹脂を適宜用いることができ，加熱によると
きは加熱硬化剤を有するインクや熱可塑性乃至熱硬化製
樹脂を，必要とする接合強度との関係で適宜選択すれば
よく，紫外線，電子線照射等を硬化手段とするときもこ
れらに準じて選択する。Although the illustrated example is as described above, in the present invention, a printing ink and a resin capable of providing a curing means can be appropriately used for the integral joining, and a heat curing agent is used when heating is performed. Ink or a thermoplastic or thermosetting resin may be appropriately selected depending on the required bonding strength, and when ultraviolet, electron beam irradiation or the like is used as the curing means, it is also selected in accordance with these.
これらは，接合に際してシートや透明樹脂基板に設け
る場合にはスクリーン印刷によることが必要であるが，
接合プレート，接合枠に設ける場合には，スクリーン印
刷及び塗布の双方を選択的に用いることができる。但し
接合プレートや接合枠の幅に比して接合をより細帯に行
うときはスクリーン印刷によるのが簡便で好ましい。When these are provided on a sheet or a transparent resin substrate at the time of joining, it is necessary to perform screen printing.
When provided on the joining plate or the joining frame, both screen printing and coating can be selectively used. However, when the bonding is performed in a narrower band than the width of the bonding plate or the bonding frame, the screen printing is simple and preferable.
なお，選択的に用いることができる硬化インク層又は
硬化樹脂層は,1mm乃至2mm程度の幅とすれば一体的な接
合を行う上で一般に支障がなく，また，このような細幅
であれば，端部において乱反射光の吸引等の損失も極く
少いので，これらが透明のもの，白色のものである以外
に所定の顔料着色がなされたものであってもよい。If the width of the cured ink layer or the cured resin layer that can be selectively used is about 1 mm to 2 mm, there is generally no problem in performing integral joining. Since the loss such as suction of irregularly reflected light at the end portions is extremely small, these may be colored with a predetermined pigment in addition to being transparent or white.
一体的な接合は，乱反射層による照明を妨げないよう
透明樹脂基板の外周側端部において行うが，このとき，
一端のみで行うことは前記従来例におけると同様塵埃を
吸着する可能性が残るので，対向する２つの端部におい
て，或いは３乃至全外周端部において接合して可及的に
塵埃吸着の防止を行うのが良い。The integral joining is performed at the outer edge of the transparent resin substrate so as not to hinder the illumination by the diffuse reflection layer.
Since the possibility of adsorbing dust remains in the same manner as in the above-described conventional example, the operation is performed only at one end, so that it is bonded at two opposing ends or at three or all outer peripheral ends to prevent dust adsorption as much as possible. Good to do.
このとき端部は，必ずしも透明樹脂基板の一側乃至両
側表面であることは必要ではなく，透明樹脂基板の一次
光源側を除けば端面部分或いはこれに及ぶものとしても
よい。At this time, the end portion does not necessarily have to be on one side or both side surfaces of the transparent resin substrate, but may be on the end surface portion or on the end surface portion except for the primary light source side of the transparent resin substrate.
透明樹脂基板はアクリル透明樹脂の他，ポリカーボネ
ート透明樹脂によることも可能であるが，拡散シート又
は反射シートはできれば，透明樹脂基板と同質樹脂製の
ものとするのがよく，こうすることにより一次光源の発
熱や雰囲気温度の影響等があっても熱膨張率を一致で
き，その影響をより解消できる。なおアクリル透明樹脂
基板にポリカーボネート製のシートを用いることも好ま
しい結果が得られる。The transparent resin substrate can be made of polycarbonate transparent resin in addition to acrylic transparent resin. However, if possible, the diffusion sheet or reflection sheet should be made of the same resin as the transparent resin substrate. Even if there is an influence of heat generation or ambient temperature, the coefficient of thermal expansion can be matched, and the influence can be further eliminated. It is to be noted that a preferable result can be obtained by using a polycarbonate sheet for the acrylic transparent resin substrate.
シートは拡散用のもの，反射用のもので異材質のもの
或いは同質にしても必要な加工を施したもの等とするこ
とはもとより可能であり，拡散，反射の目的に応じてこ
れを設定すれば足りる。The sheet can be made of a material for diffusion or reflection and made of a different material or of the same quality but with necessary processing, etc., and can be set according to the purpose of diffusion and reflection. Is enough.
接合プレート，接合枠を用いるについては，一般に薄
肉化したものが透明樹脂基板とシートとの間の空隙の発
生を確実に防止し得ること，面光源パネル全体の薄肉化
に有益であることから都合がよいが，更に,0.3mm以下の
ものとしておけば加熱を硬化手段とするとき，アクリル
系樹脂製のもので220℃〜230℃程度，塩化ビニール系樹
脂製で80℃程度の温度を加えることによって接着による
接合が比較的容易になし得る利点もある。In general, the use of a joining plate or a joining frame is advantageous because a thinner one can surely prevent the formation of a gap between the transparent resin substrate and the sheet and is useful for making the entire surface light source panel thinner. However, if the heating is used as the curing means if the thickness is 0.3 mm or less, apply a temperature of about 220 to 230 ° C for acrylic resin and about 80 ° C for vinyl chloride resin. There is also an advantage that bonding by adhesion can be made relatively easily.
なお，これらはなるべく白色系のものとするのがよ
く，その余の顔料着色によるものは，幅との関係もある
が，一般には乱反射光の損失を招くようになることから
避けることが望ましい。It is preferable to use white pigments as much as possible, and any other pigment coloring may have a relationship with the width, but generally it is desirable to avoid the loss of diffused reflected light.
スクリーン印刷による場合，接合プレート又は接合枠
による場合とも，なるべく一体的な接合は端部長手方向
全長に一連のものとするのがよいが，特に透明樹脂基板
とシート間に熱膨張率の差がないか，少ない場合には，
必要な接合強度を確保できる以上，一部断続状のものと
して実質的に端部長手方向全長に亘る接合とすること等
も可能である。In the case of screen printing, even in the case of a joining plate or joining frame, it is preferable that the integral joining be as a series as possible over the entire length in the longitudinal direction of the end. If there is no or little,
As long as necessary bonding strength can be ensured, it is possible to form a partly intermittent joint substantially over the entire length in the longitudinal direction of the end.
上記例はいずれも単一板の透明樹脂板を用いたが，複
数のものを積層する場合は，拡散シートをこれらの間に
上記接合により又は挟着状にして介設する如くにするこ
とも可能であり，更に透明樹脂板を厚肉にすること，乱
反射面のパターンを適宜変更すること等を含めて，本発
明の実施に際しては，乱反射面，透明樹脂基板，拡散シ
ート，反射シート，接合プレート，接合枠の具体的形
状，構造，材質，寸法，これらの関係及びインク，樹脂
の硬化手段，組立て方法，面光源装置としての用途等
は，各発明の要旨に反しない限り様々に変更できる。In each of the above examples, a single transparent resin plate was used. However, in the case of laminating a plurality of sheets, a diffusion sheet may be interposed between them by the above-mentioned bonding or sandwiching. It is possible to use a diffuse reflection surface, a transparent resin substrate, a diffusion sheet, a reflection sheet, a bonding sheet, and the like, in addition to thickening the transparent resin plate and appropriately changing the pattern of the diffuse reflection surface. The specific shapes, structures, materials and dimensions of the plates and the joining frames, their relations, ink and resin curing means, assembling methods, applications as surface light source devices, etc. can be variously changed without departing from the gist of each invention. .
本発明は以上のとおりに構成したので，一体的な接合
幅を細帯状のものとし，必要な接合強度得て，精密な接
合を行うことができる。また，接合プレート，接合枠を
用いて人手作業としてこの接合を行うにおいてもスクリ
ーン印刷で接合位置が定められ或いは接合プレート，接
合枠が接合位置の位置出し基準となるため煩雑さを大幅
に解消することができ，これを自動化することも可能で
あり，この場合を含めて歩留りを確保して量産に適する
ものとすることができる。Since the present invention is configured as described above, the integral joining width can be made into a narrow band shape, the necessary joining strength can be obtained, and precise joining can be performed. Also, when performing this joining as a manual operation using the joining plate and the joining frame, the joining position is determined by screen printing, or the joining plate and the joining frame serve as a reference for determining the joining position, so that the complexity is greatly reduced. It is also possible to automate this, and in this case as well, it is possible to secure the yield and make it suitable for mass production.
また，透明樹脂基板とシートの接合が上記複数端部で
行われるか，透明樹脂基板はシートに包覆状とされるの
で，一次光源が発熱し，熱膨張率の差のある材質を用い
た場合でも，透明樹脂基板が部分的に負荷を受けて異常
変形したりすることを可及的に防止でき，特に液晶バッ
クライト等，他の機器に内蔵使用しても長期に亘る安定
した照明を実現する上で有効なエッジライト用面光源パ
ネルを提供することができる。Also, since the transparent resin substrate and the sheet are joined at the above-mentioned plurality of ends or the transparent resin substrate is covered by the sheet, a material having a difference in coefficient of thermal expansion from the primary light source generating heat is used. Even in this case, it is possible to prevent the transparent resin substrate from being deformed abnormally due to partial load as much as possible. In particular, it can provide stable lighting for a long time even when used in other devices such as a liquid crystal backlight. An effective surface light source panel for edge light can be provided.
図面は実施例を示すもので，第１図及び第２図は請求第
１項の実施例における面光源パネルのそれぞれ分解斜視
図及び一部拡大断面図，第３図及び第４図は請求第２項
の実施例におけるそれぞれ同じく分解斜視図及び一部拡
大断面図，第５図及び第６図は請求第３項の実施例にお
けるそれぞれ分解斜視図及び生産装置の例を示す縦断面
図である。 A,B,C……面光源パネル、5,7……反射シート １……透明樹脂基板、６……硬化インク層 ３……乱反射面、14……硬化樹脂層 ４……拡散シート、17……１次光源1 and 2 show an exploded perspective view and a partially enlarged sectional view of a surface light source panel according to the first embodiment, and FIGS. 3 and 4 show an embodiment. 5 and 6 are an exploded perspective view and a longitudinal sectional view showing an example of a production apparatus, respectively, according to the third embodiment. . A, B, C ... surface light source panel, 5, 7 ... reflective sheet 1 ... transparent resin substrate, 6 ... cured ink layer 3 ... diffused reflection surface, 14 ... cured resin layer 4 ... diffusion sheet, 17 ...... Primary light source
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ４１Ｆ 15/08 ３０３ Ｂ４１Ｆ 15/08 ３０３Ｅ Ｆ２１Ｓ 2/00 Ｆ２１Ｖ 8/00 ６０１Ｚ Ｆ２１Ｖ 8/00 ６０１ Ｆ２１Ｓ 1/00 Ｅ Ｇ０２Ｆ 1/13357 Ｇ０２Ｆ 1/1335 ５３０ (56)参考文献 特開 平３−204683（ＪＰ，Ａ) 実開 平１−177780（ＪＰ，Ｕ) 実開 平３−119912（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G09F 9/00 F21V 8/00 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification code FI B41F 15/08 303 B41F 15/08 303E F21S 2/00 F21V 8/00 601Z F21V 8/00 601 F21S 1/00 E G02F 1 / 13357 G02F 1/1335 530 (56) References JP-A-3-204683 (JP, A) JP-A-1-177780 (JP, U) JP-A-3-119912 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) G09F 9/00 F21V 8/00
Claims (3)
面側の両端部分を含む外周側複数端部と，該基板を被覆
する拡散シート又は反射シートとを，スクリーン印刷に
よる細帯状硬化インク層又は硬化樹脂層を介在せしめて
一体的に接合してなることを特徴とするエッジライト用
面光源パネル。1. A thin strip-shaped cured ink layer formed by screen printing, comprising a plurality of outer peripheral ends including both end portions on the opposite end surface side of a transparent resin substrate on which a diffuse reflection layer is formed, and a diffusion sheet or a reflection sheet covering the substrate. Alternatively, a surface light source panel for edge light characterized by being integrally joined with a cured resin layer interposed therebetween.
ートと反射シートにより包覆せしめるとともに該基板の
対向端面側の両端部を含む外周側複数端部において拡散
シートと反射シートとをスクリーン印刷による細帯状硬
化インク層又は硬化樹脂層を介在せしめて一体的に接合
してなることを特徴とするエッジライト用面光源パネ
ル。2. A transparent resin substrate on which a diffuse reflection layer is formed is covered with a diffusion sheet and a reflection sheet, and the diffusion sheet and the reflection sheet are screen-printed at a plurality of outer peripheral ends including both ends on opposite end surfaces of the substrate. A surface light source panel for an edge light, wherein the surface light source panel for an edge light is formed by integrally bonding a thin band-shaped cured ink layer or a cured resin layer.
面側の両端部分を含む外周側複数端部と，該基板を被覆
する拡散シート又は反射シートとを，表裏両面に硬化イ
ンク層又は硬化樹脂層を有する細帯状の接合プレートの
介装配置又は上記拡散シート乃至反射シートとの対向面
に硬化インク層又は硬化樹脂層を有する細帯状コ字型の
接合枠の上記基板への嵌着配置によって上記硬化インク
層又は硬化樹脂層を介在せしめて一体的に接合してなる
ことを特徴とするエッジライト用面光源パネル。3. A transparent resin substrate on which an irregular reflection layer is formed, a plurality of outer peripheral ends including both end portions on the opposite end surface side, and a diffusion sheet or a reflection sheet covering the substrate are provided on both front and back surfaces of a cured ink layer or a cured ink layer. An interposition arrangement of a strip-shaped joining plate having a resin layer, or a fitting arrangement of a strip-shaped U-shaped joining frame having a cured ink layer or a cured resin layer on the surface facing the diffusion sheet or the reflection sheet on the substrate. A surface light source panel for an edge light, wherein the surface light source panel is integrally joined with the above-mentioned cured ink layer or cured resin layer interposed therebetween.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20448090A JP3210322B2 (en) | 1990-07-31 | 1990-07-31 | Surface light source panel for edge light |
| GB9113984A GB2247310B (en) | 1990-07-03 | 1991-06-28 | Edge light panel device |
| TW080105026A TW197499B (en) | 1990-07-03 | 1991-06-28 | |
| DE4121898A DE4121898A1 (en) | 1990-07-03 | 1991-07-02 | EDGE LIGHTING FIELD DEVICE |
| KR1019910011248A KR950010414B1 (en) | 1990-07-03 | 1991-07-03 | Edge-light panel apparatus |
| US07/725,661 US5207493A (en) | 1990-07-03 | 1991-07-03 | Edge light panel device |
| FR9108292A FR2664411A1 (en) | 1990-07-03 | 1991-07-03 | Luminous panel lit through the edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20448090A JP3210322B2 (en) | 1990-07-31 | 1990-07-31 | Surface light source panel for edge light |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0488392A JPH0488392A (en) | 1992-03-23 |
| JP3210322B2 true JP3210322B2 (en) | 2001-09-17 |
Family
ID=16491226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20448090A Expired - Lifetime JP3210322B2 (en) | 1990-07-03 | 1990-07-31 | Surface light source panel for edge light |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3210322B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3728723B2 (en) * | 2000-12-20 | 2005-12-21 | ミネベア株式会社 | Surface lighting device |
| KR20110028595A (en) * | 2008-05-28 | 2011-03-21 | 퀄컴 엠이엠스 테크놀로지스, 인크. | Light guide panal with light turning microstructure, method of fabrication thereof, and display device |
| JP2010044221A (en) * | 2008-08-12 | 2010-02-25 | Sony Corp | Optical package, lighting system, and display device |
| JP5163516B2 (en) * | 2009-01-22 | 2013-03-13 | ソニー株式会社 | Optical element package, backlight and liquid crystal display device |
| KR20120090772A (en) | 2009-05-29 | 2012-08-17 | 퀄컴 엠이엠에스 테크놀로지스, 인크. | Illumination devices and methods of fabrication thereof |
| EP2343581A1 (en) | 2010-01-07 | 2011-07-13 | LG Innotek Co., Ltd. | Backlight unit |
-
1990
- 1990-07-31 JP JP20448090A patent/JP3210322B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0488392A (en) | 1992-03-23 |
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