JP2574199B2 - Manufacturing method of surface emitting device - Google Patents
Manufacturing method of surface emitting deviceInfo
- Publication number
- JP2574199B2 JP2574199B2 JP4309369A JP30936992A JP2574199B2 JP 2574199 B2 JP2574199 B2 JP 2574199B2 JP 4309369 A JP4309369 A JP 4309369A JP 30936992 A JP30936992 A JP 30936992A JP 2574199 B2 JP2574199 B2 JP 2574199B2
- Authority
- JP
- Japan
- Prior art keywords
- guide plate
- light guide
- reflector
- emitting device
- reflection
- 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 - Fee Related
Links
Landscapes
- Liquid Crystal (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、液晶表示装置などに
用いられる面発光装置の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a surface light emitting device used for a liquid crystal display device or the like.
【０００２】[0002]
【従来の技術】従来より、透明な導光板の側面に線光源
を配置したエッジライト方式の面発光装置が、液晶表示
装置のバックライトなどとして用いられている。この方
式の面発光装置としては、透明な導光板の裏面に線光源
からの光を均一に配分するためのパターンが印刷などで
形成され、導光板の表側に表面拡散板を配置し、導光板
の裏面に方形の裏面反射板を、導光板の側面に短冊状の
側面反射板を接着させるように構成したものもある。2. Description of the Related Art Conventionally, an edge light type surface light emitting device in which a line light source is arranged on a side surface of a transparent light guide plate has been used as a backlight of a liquid crystal display device. As a surface light emitting device of this type, a pattern for uniformly distributing light from a linear light source is formed on the back surface of a transparent light guide plate by printing or the like, and a surface diffusion plate is arranged on the front side of the light guide plate, and a light guide plate is provided. There is also a configuration in which a rectangular back reflector is adhered to the back surface of the light guide plate, and a strip-shaped side reflector is adhered to the side surface of the light guide plate.
【０００３】しかし、短冊状の側面反射板を導光板に接
着させる場合、近年の面発光装置の薄形化にともなって
導光板の厚みも薄くなってきたため、側面反射板を非常
に細くしなければならない。したがって、側面反射板の
接着面積が狭くなるので、位置ズレが起こりやすくな
り、正確な位置に接着させることが困難であった。ま
た、裏面反射板と側面反射板とが分離しているので、裏
面反射板と側面反射板のそれぞれを導光板と接着させな
ければならず、接着作業が複数回必要となり手間がかか
っていた。However, when a strip-shaped side reflector is adhered to the light guide plate, the thickness of the light guide plate has become thinner as the surface emitting device has become thinner in recent years, so that the side reflector must be made very thin. Must. Therefore, since the bonding area of the side reflection plate is reduced, misalignment is likely to occur, and it has been difficult to bond the side reflection plate to an accurate position. In addition, since the back reflection plate and the side reflection plate are separated, each of the back reflection plate and the side reflection plate must be bonded to the light guide plate, which requires a plurality of bonding operations, which is troublesome.
【０００４】この問題を解決する方法として、方形の裏
面反射部５とその少なくとも１辺を除く辺に隣接する短
冊状の側面反射部６とを有する一枚の反射板９（図５ａ
参照）を裏面反射部５と各側面反射部６との境界で直角
に折り曲げて裏側面一体型反射板４とし（図５ｂ参
照）、この裏側面一体型反射板４を透明な導光板１と接
着させて面発光装置に組み込む方法がある。この方法に
よると、接着面積の広い裏面反射部５と導光板１とを位
置合わせすることによって、接着面積の狭い側面反射部
６と導光板１との位置合わせが必然的に行われるので、
裏面反射部５および側面反射部６を位置ズレすることな
く簡単に導光板１に接着させることができる（図５ｃ参
照）。As a method for solving this problem, a single reflecting plate 9 (FIG. 5a) having a rectangular back surface reflecting portion 5 and a strip-shaped side surface reflecting portion 6 adjacent to at least one side thereof is provided.
(See FIG. 5B) is bent at a boundary between the back surface reflection portion 5 and each side surface reflection portion 6 to form a back side integrated reflection plate 4 (see FIG. 5B). There is a method of bonding and incorporating into a surface light emitting device. According to this method, by aligning the back surface reflection portion 5 having a large bonding area and the light guide plate 1, the positioning between the side reflection portion 6 having a small bonding area and the light guide plate 1 is inevitably performed.
The back surface reflection portion 5 and the side surface reflection portion 6 can be easily adhered to the light guide plate 1 without being displaced (see FIG. 5C).
【０００５】[0005]
【発明が解決しようとする課題】この方法によるときに
は、次の２点の問題点があった。すなわち、この種の反
射板は、通常、0.2mm程の厚みのあるものであるので、
前記したように非常に細い側面反射部を形成するよう
に、一枚の反射板を折り曲げることは難しかった。ま
た、通常、裏側面一体型反射板の材料としてはポリエチ
レンテレフタレート樹脂、ポリカーボネート樹脂などが
用いられ、導光板の材料としてはアクリル樹脂が用いら
れる。このように熱収縮率の異なる異種樹脂が用いられ
るので、組み込まれた装置内部の熱や外気温などにより
熱が加えられた場合、導光板に貼り付けられた裏側面一
体型反射板が剥がれたり、導光板が反る恐れがあった。However, this method has the following two problems. That is, since this type of reflector is usually about 0.2 mm thick,
As described above, it was difficult to bend one reflector so as to form a very thin side reflector. Usually, a polyethylene terephthalate resin, a polycarbonate resin, or the like is used as a material of the back side integrated reflection plate, and an acrylic resin is used as a material of the light guide plate. Since different kinds of resins having different heat shrinkage rates are used as described above, if heat is applied due to heat inside the installed device or outside temperature, the back side integrated reflector attached to the light guide plate may peel off. The light guide plate may be warped.
【０００６】したがって、この発明は、以上のような欠
点を解消した面発光装置の製造方法を提供することを目
的とする。Accordingly, an object of the present invention is to provide a method for manufacturing a surface light emitting device which has solved the above-mentioned disadvantages.
【０００７】[0007]
【課題を解決するための手段】この発明の面発光装置の
製造方法は、上記の目的を達成するために、方形の裏面
反射部とその少なくとも１辺を除く辺に隣接する短冊状
の側面反射部とを有する一枚の反射板を裏面反射部と各
側面反射部との境界で直角に折り曲げて裏側面一体型反
射板とし、この裏側面一体型反射板を透明な導光板と接
着させて面発光装置に組み込む面発光装置の製造方法に
おいて、一枚の反射板を折り曲げる前に裏面反射部と各
側面反射部との境界に、幅0.05〜0.5mmの継ぎ部分を少
なくとも１個所残して鋭利な刃物で細線状の切れ目を入
れるように構成したものである。SUMMARY OF THE INVENTION In order to achieve the above object, a method for manufacturing a surface light emitting device according to the present invention includes a rectangular back surface reflection portion and a strip-shaped side reflection surface adjacent to at least one side thereof. A single reflector having a portion is bent at a right angle at the boundary between the rear reflector and each side reflector to form a backside integrated reflector, and the backside integrated reflector is bonded to a transparent light guide plate. In the method of manufacturing a surface light emitting device to be incorporated in a surface light emitting device, before bending one reflector, sharp edges are left at least one joint portion having a width of 0.05 to 0.5 mm at a boundary between a back surface reflection portion and each side reflection portion. It is configured to make fine line-shaped cuts with a sharp blade.
【０００８】図面を参照しながらこの発明をさらに詳し
く説明する。図１は本発明の面発光装置の製造方法の一
実施例を示す図、図２〜図４は本発明の面発光装置の製
造方法に用いる一枚の反射板の一実施例を示す平面図で
ある。１は導光板、２は光拡散透過部、３は表面拡散
板、４は裏側面一体型反射板、５は裏面反射部、６は側
面反射部、７は継ぎ部分、８は細線状の切れ目、９は一
枚の反射板、１０は粘着剤、１１は面発光装置、１２は
線光源をそれぞれ示す。The present invention will be described in more detail with reference to the drawings. FIG. 1 is a diagram showing one embodiment of a method for manufacturing a surface light emitting device of the present invention, and FIGS. 2 to 4 are plan views showing one embodiment of one reflector used in the method of manufacturing a surface light emitting device of the present invention. It is. 1 is a light guide plate, 2 is a light diffusion transmission portion, 3 is a front surface diffusion plate, 4 is a back side integrated type reflection plate, 5 is a back surface reflection portion, 6 is a side reflection portion, 7 is a joint portion, and 8 is a fine line cut. , 9 is a single reflector, 10 is an adhesive, 11 is a surface emitting device, and 12 is a line light source.
【０００９】この実施例における面発光装置１１は、図
１に示すように、方形の裏面反射部５とその少なくとも
１辺を除く辺に隣接する短冊状の側面反射部６とを有す
る一枚の反射板９の裏面反射部５と各側面反射部６との
境界に、幅0.05〜0.5mmの継ぎ部分７を少なくとも１個
所残して鋭利な刃物で細線状の切れ目８を入れ（図１
ａ、図２、図３、図４参照）、その後、前記境界で直角
に折り曲げて裏側面一体型反射板４とし（図１ｂ参
照）、透明な導光板１と貼り合わせて製造する（図１ｃ
参照）。As shown in FIG. 1, a surface light emitting device 11 of this embodiment has a rectangular back surface reflection portion 5 and a strip-shaped side surface reflection portion 6 adjacent to at least one side thereof. At the boundary between the back reflection part 5 and each side reflection part 6 of the reflection plate 9, a fine line-shaped cut 8 is made with a sharp blade leaving at least one joint part 7 having a width of 0.05 to 0.5 mm (FIG. 1).
a, see FIG. 2, FIG. 3, and FIG. 4), and then bent at a right angle at the boundary to form a back side integrated reflector 4 (see FIG. 1b) and bonded to the transparent light guide plate 1 (FIG. 1c).
reference).
【００１０】裏側面一体型反射板４の材料としては、白
色フィルムや白色板などの反射材料が適当である。As a material of the back side integral type reflection plate 4, a reflection material such as a white film or a white plate is suitable.
【００１１】これらの反射材料を用い、プレスなどの方
法により、方形の裏面反射部５とその少なくとも１辺を
除く辺に隣接する短冊状の側面反射部６とを有する一枚
の反射板９を外形打ち抜きする。Using such a reflecting material, a single reflecting plate 9 having a rectangular back surface reflecting portion 5 and a strip-shaped side surface reflecting portion 6 adjacent to at least one side thereof is formed by pressing or the like. Punch the outline.
【００１２】この外形打ち抜きの後かあるいは同時に、
プレスなどの方法により、裏面反射部５と各側面反射部
６との境界に細線状の切れ目８を入れる。細線状の切れ
目８は、幅0.05〜0.5mmの継ぎ部分７を少なくとも１個
所残して設ける。継ぎ部分７の幅が0.5mm以上となると
折り曲げにくくなり、継ぎ部分７の折り曲げ個所にＲが
形成され、折り曲げ個所付近で裏側面一体型反射板４と
導光板とを密着できなくなる。一方、継ぎ部分７の幅が
0.05mm以下となると折り曲げたときに切断分離すること
がある。なお、この継ぎ部分７は、裏面反射部５と側面
反射部６との境界の長さ100mm当り、総延長２mm以下が
好ましい。２mmを超えるとやはり、折り曲げにくくなる
からである。細線状の切れ目８は、たとえば、カミソリ
刃などの鋭利な刃物で形成される。したがって、切れ目
の左右間には殆ど隙間がなく、切れ目が細線状に見え
る。なお、細線状の切れ目８の長さは一定でなくてもよ
い。After or at the same time as the contour punching,
A thin line-shaped cut 8 is made at the boundary between the back surface reflection portion 5 and each side surface reflection portion 6 by a method such as pressing. The fine line-shaped cut 8 is provided leaving at least one joint portion 7 having a width of 0.05 to 0.5 mm. If the width of the joint portion 7 is 0.5 mm or more, it becomes difficult to bend, and R is formed at the bent portion of the joint portion 7, so that the back side integrated reflector 4 and the light guide plate cannot be closely adhered near the bent portion. On the other hand, the width of the joint 7 is
If it is less than 0.05 mm, it may be cut and separated when bent. It is preferable that the joint 7 has a total extension of 2 mm or less per 100 mm of the boundary between the back surface reflection portion 5 and the side surface reflection portion 6. If it exceeds 2 mm, it becomes difficult to bend. The fine line-shaped cut 8 is formed by a sharp blade such as a razor blade. Therefore, there is almost no gap between the left and right of the cut, and the cut looks like a thin line. Note that the length of the fine line-shaped cut 8 may not be constant.
【００１３】次に、一枚の反射板９を裏面反射部５と各
側面反射部６との境界で直角に折り曲げて裏側面一体型
反射板４とする。Next, one reflector 9 is bent at a right angle at the boundary between the back reflector 5 and each of the side reflectors 6 to form the back side integrated reflector 4.
【００１４】次に、裏側面一体型反射板４を透明な導光
板１と接着させて面発光装置１１に組み込む。導光板１
としては、厚さ1〜30mm程度の透明な長方形板材が好ま
しい。導光板１の材料としては、アクリル、ポリカーボ
ネート、ポリ塩化ビニルなどの樹脂、あるいはガラスな
どを用いるとよい。また、導光板１の裏面には、光拡散
透過部２が印刷法などによりドット状などに形成されて
いる。光拡散透過部２は、光源からの輝度変化に応じて
適宜面積率が変化するように形成する。通常は、線光源
１２から遠ざかるにつれて、輝度に反比例して面積率が
大きくなるように形成する。Next, the back side integrated reflector 4 is bonded to the transparent light guide plate 1 and assembled into the surface light emitting device 11. Light guide plate 1
It is preferable to use a transparent rectangular plate having a thickness of about 1 to 30 mm. As a material of the light guide plate 1, a resin such as acryl, polycarbonate, polyvinyl chloride, or the like, or glass may be used. Further, on the back surface of the light guide plate 1, a light diffusion transmission portion 2 is formed in a dot shape or the like by a printing method or the like. The light diffusion transmission part 2 is formed such that the area ratio changes appropriately in accordance with a change in luminance from the light source. Normally, it is formed such that the area ratio increases in inverse proportion to the luminance as the distance from the line light source 12 increases.
【００１５】裏側面一体型反射板４の導光板１への接着
方法としては、超音波やレーザーにより溶着する方法、
両面テープ、粘着剤１０や接着剤により貼り付ける方法
などがある。なお、両面テープ、粘着剤１０や接着剤に
より貼り付ける方法を用いる場合は、外形打ち抜きを行
う前に、反射材料の所望の位置に両面テープ、粘着剤１
０や接着剤を設けておく。このとき、各接着材料表面に
はポリプロピレンシートなどのセパレータを設けてお
く。セパレータがないと外形打ち抜きや細線状の切れ目
８形成ができないからである。また、粘着剤１０や接着
剤の形成はスクリーン印刷などの印刷法を用いるとよ
い。As a method of bonding the back side integral type reflection plate 4 to the light guide plate 1, a method of welding by ultrasonic waves or a laser,
There is a double-sided tape, a method of attaching with an adhesive 10 or an adhesive, and the like. When using a method of sticking with a double-sided tape, an adhesive 10 or an adhesive, the double-sided tape, the adhesive 1 is placed at a desired position on the reflective material before the outer shape is punched.
0 and an adhesive are provided. At this time, a separator such as a polypropylene sheet is provided on the surface of each adhesive material. This is because, without the separator, the outer shape punching and the formation of the fine line-shaped cut 8 cannot be performed. The pressure-sensitive adhesive 10 and the adhesive may be formed by a printing method such as screen printing.
【００１６】また、裏側面一体型反射板４の導光板１へ
の接着については、裏側面一体型反射板４の一部分のみ
で行うのが適当であり、裏側面一体型反射板４全面で行
うのは適当ではない。この場合、裏面反射部５のみ、側
面反射部６のみ、あるいは両方で接着してもよい。ただ
し、裏側面一体型反射板４と導光板１との熱収縮率が異
なる場合には、両方で接着しておく。裏面反射部５にお
ける接着場所としては、裏面反射部５の周辺部分が考え
られる。たとえば、裏面反射部５の４辺全部でもよい
し、そのうちの１辺または数辺でもよくさらには１辺の
うちの一部分のみでもよい。接着面積を1mm3以下のよう
な狭い範囲にすることにより、導光板１を端部いっぱい
まで加工することができる。一方、側面反射部６におけ
る接着場所としては、側面反射部６全面、あるいは一部
分が考えられる。また、一枚の反射板９の状態で導光板
１に接着した後に、折り曲げて裏側面一体型反射板４と
する方法もある。The bonding of the back side integrated reflector 4 to the light guide plate 1 is suitably performed only on a part of the back side integrated reflector 4, and is performed on the entire back side integrated reflector 4. Is not appropriate. In this case, only the back surface reflection portion 5, only the side surface reflection portion 6, or both may be bonded. However, when the heat shrinkage ratios of the back side integrated reflector 4 and the light guide plate 1 are different, both are bonded in advance. As a bonding place in the back surface reflection portion 5, a peripheral portion of the back surface reflection portion 5 can be considered. For example, it may be all four sides of the back reflection part 5, one side or several sides thereof, or only a part of one side. By setting the bonding area to a narrow range such as 1 mm 3 or less, the light guide plate 1 can be processed to the entire end. On the other hand, the entire surface or a part of the side reflection unit 6 can be considered as a bonding place in the side reflection unit 6. Also, there is a method in which a single reflection plate 9 is adhered to the light guide plate 1 and then bent to form the back side integrated reflection plate 4.
【００１７】さらに、導光板１の側面には線光源１２
を、導光板１の表側には表面拡散板３を配置して面発光
装置１１が完成する。線光源１２は、導光板１の１辺の
みに配置されてもよく、対向する２辺に配置されてもよ
い。線光源１２としては、熱陰極線管や冷陰極線管など
陰極線管を用いるとよい。また、線光源１２を覆うよう
に湾曲反射板を配置し、線光源１２の光を効率よく利用
できるようにしてもよい。一方、表面拡散板３として
は、光拡散物質が塗布されたフィルム、それ自体が拡散
性を有するフィルム、乳白色の樹脂板などを使用するこ
とができる。Further, a linear light source 12 is provided on the side of the light guide plate 1.
The surface diffusion plate 3 is disposed on the front side of the light guide plate 1 to complete the surface light emitting device 11. The linear light sources 12 may be arranged on only one side of the light guide plate 1 or may be arranged on two opposing sides. As the line light source 12, a cathode ray tube such as a hot cathode ray tube or a cold cathode ray tube may be used. Further, a curved reflecting plate may be arranged so as to cover the line light source 12 so that the light of the line light source 12 can be used efficiently. On the other hand, as the surface diffusing plate 3, a film coated with a light diffusing substance, a film having a diffusive property per se, a milky white resin plate, or the like can be used.
【００１８】[0018]
【実施例】導光板１（152.8mm×252.5mm×２mm）とし
て、アクリル板を用いる。導光板１の裏面にはドットグ
ラデーション状の光拡散透過部２が形成されている。EXAMPLE An acrylic plate is used as the light guide plate 1 (152.8 mm × 252.5 mm × 2 mm). On the back surface of the light guide plate 1, a light diffusion transmission portion 2 in a dot gradation form is formed.
【００１９】裏側面一体型反射板４として、長方形の裏
面反射部５（151.8mm×252mm）とその４辺のうち後に光
源と対向する辺となる１辺に隣接する短冊状の側面反射
部６（151.8mm×２mm）とを有し、裏面反射部５と側面
反射部６との境界に幅0.3mmの継ぎ部分７を６個所残し
て長さ30mmの細線状の切れ目８を直線上に順次５本並べ
て設けられ、裏面反射部５と側面反射部６との境界で直
角に折り曲げられているものを用いる。As the back-side integrated reflector 4, a rectangular back-side reflecting portion 5 (151.8 mm × 252 mm) and a strip-shaped side-side reflecting portion 6 adjacent to one of the four sides which will be the side facing the light source later. (151.8 mm x 2 mm), and a thin line-shaped cut 8 having a length of 30 mm is sequentially formed on a straight line while leaving six joints 7 having a width of 0.3 mm at the boundary between the back surface reflection portion 5 and the side surface reflection portion 6. Five of them are provided side by side and are bent at a right angle at the boundary between the back surface reflection portion 5 and the side surface reflection portion 6.
【００２０】上記裏側面一体型反射板４を製造するに
は、まず、反射材料としてシート状の東レ株式会社製E6
0白色ポリエステル（厚さ0.188mm）を用い、側面反射部
６となる部分全面と裏面反射部５となる部分の細線状の
切れ目８に沿った中央付近にスクリーン印刷にてアクリ
ル系の粘着剤１０を部分的に塗布する。In order to manufacture the above-mentioned integrated reflector 4 on the back side, first, a sheet-like E6 manufactured by Toray Industries, Inc.
0 Using a white polyester (0.188 mm thick), an acrylic pressure-sensitive adhesive 10 is screen-printed around the center of the entire surface to be the side reflection portion 6 and the center of the portion to be the back reflection portion 5 along the thin line cut 8. Is partially applied.
【００２１】次に、粘着剤１０塗布部分にセパレーター
フィルムをラミネーター機によりラミネートする。Next, a separator film is laminated on the portion where the adhesive 10 is applied by a laminator machine.
【００２２】次に、反射材料よりトムソン型を用いて、
外形打ち抜きを行い前記裏面反射部５および側面反射部
６を有する一枚の反射板９を得るとともに、裏面反射部
５と各側面反射部６との境界に継ぎ部分７を残して細線
状の切れ目８を入れる。Next, using a Thomson type from a reflective material,
An outer shape is punched to obtain a single reflector 9 having the back surface reflection portion 5 and the side surface reflection portion 6, and a thin line-shaped cut is left at the boundary between the back surface reflection portion 5 and each side surface reflection portion 6. Insert 8.
【００２３】最後に、セパレーターフィルム剥離後、反
射板の裏面反射部５を導光板１にドットグラデーション
状の光拡散透過部２に接する面に接着し、裏面反射部５
と側面反射部６との境界で直角に手で折り曲げて裏側面
一体型反射板４とし、光拡散透過部２の面積密度の大き
い側の導光板１側面に上記折り曲げた側面反射部６の粘
着剤１０塗布部を接着する。Finally, after the separator film is peeled off, the back surface reflection portion 5 of the reflection plate is adhered to the light guide plate 1 on the surface in contact with the dot-diffusion light diffusion / transmission portion 2.
The back side integrated type reflector 4 is bent by hand at a right angle at the boundary between the light guide plate 1 and the side reflector 6, and the bent side reflector 6 is adhered to the side of the light guide plate 1 on the side where the area density of the light diffusion transmission part 2 is larger. The part to which the agent 10 is applied is bonded.
【００２４】さらに、導光板１の側面には線光源１２と
して冷陰極線管を配置し、導光板１の表側には表面拡散
板３として株式会社きもと製D204（152.8mm×252.5mm）
を配置して、面発光装置１１を完成した。Further, a cold cathode ray tube is disposed as a line light source 12 on the side of the light guide plate 1, and D204 (152.8 mm × 252.5 mm) manufactured by Kimoto Co., Ltd. as a surface diffusion plate 3 on the front side of the light guide plate 1.
And the surface light emitting device 11 was completed.
【００２５】[0025]
【作用】本発明は、以上のような構成よりなるので、次
の作用が奏される。裏面反射部および側面反射部との境
界で直角に折り曲げると、前記境界に細線状の切れ目が
設けられているので、折り曲げ力の負荷がかかるのは0.
05〜0.5mmの継ぎ部分のみとなる。Since the present invention has the above-described structure, the following operation is achieved. When bent at a right angle at the boundary between the back surface reflection portion and the side surface reflection portion, a thin line-shaped cut is provided at the boundary, so that a load of bending force is applied.
It becomes only the joint part of 05-0.5mm.
【００２６】また、裏側面一体型反射板と導光板に熱が
加わった場合、両者間の熱収縮率の差は細線状の切れ目
によって吸収緩和されることになる。When heat is applied to the back-side integrated reflector and the light guide plate, the difference in the thermal shrinkage between the two is reduced by the thin cut lines.
【００２７】[0027]
【発明の効果】したがって、本発明の面発光装置の製造
方法に用いる一枚の反射板は、継ぎ部分の幅が0.05〜0.
5mmであるので、裏面反射部と側面反射部との境界にお
いて手作業でも容易に折り曲げることができる。Therefore, one reflector used in the method for manufacturing a surface light emitting device of the present invention has a joint portion width of 0.05 to 0.1 mm.
Since it is 5 mm, it can be easily folded even at the boundary between the back surface reflection portion and the side surface reflection portion even by manual operation.
【００２８】また、裏側面一体型反射板と導光板との熱
収縮率が異なる場合でも、裏面反射部と側面反射部との
境界に幅が0.05〜0.5mmの継ぎ部分を少なくとも一個所
残して細線状の切れ目が入っているので、両者の熱収縮
率の差が極めて大きい場合には、裏面反射部と側面反射
部とが簡単に切断分離され、導光板から裏側面一体型反
射板が剥がれたり、導光板が反ることがない。Further, even when the heat shrinkage ratios of the back side integrated reflector and the light guide plate are different, at least one joint having a width of 0.05 to 0.5 mm is left at the boundary between the back side reflection part and the side face reflection part. Since there is a fine line-shaped cut, if the difference in thermal shrinkage between the two is extremely large, the back reflection part and the side reflection part are easily cut and separated, and the back-side integrated reflector is peeled from the light guide plate. And the light guide plate does not warp.
【図１】本発明の面発光装置の製造方法の一実施例を示
す図である。FIG. 1 is a view showing one embodiment of a method for manufacturing a surface emitting device of the present invention.
【図２】本発明の面発光装置の製造方法に用いる一枚の
反射板の一実施例を示す平面図である。FIG. 2 is a plan view showing one embodiment of a single reflector used in the method for manufacturing a surface emitting device of the present invention.
【図３】本発明の面発光装置の製造方法に用いる一枚の
反射板の一実施例を示す平面図である。FIG. 3 is a plan view showing one embodiment of a single reflector used in the method for manufacturing a surface emitting device of the present invention.
【図４】本発明の面発光装置の製造方法に用いる一枚の
反射板の一実施例を示す平面図である。FIG. 4 is a plan view showing one embodiment of one reflector used in the method for manufacturing a surface light emitting device of the present invention.
【図５】従来の面発光装置の製造方法の一実施例を示す
図である。FIG. 5 is a view showing one embodiment of a method for manufacturing a conventional surface light emitting device.
１ 導光板 ２ 光拡散透過部 ３ 表面拡散板 ４ 裏側面一体型反射板 ５ 裏面反射部 ６ 側面反射部 ７ 継ぎ部分 ８ 細線状の切れ目 ９ 一枚の反射板 １０ 粘着剤 １１ 面発光装置 １２ 線光源 DESCRIPTION OF SYMBOLS 1 Light-guide plate 2 Light-diffusion transmission part 3 Surface-diffusion plate 4 Back side integral reflection plate 5 Back-side reflection part 6 Side-side reflection part 7 Joint part 8 Thin line-shaped cut 9 One sheet of reflection plate 10 Adhesive 11 Surface light-emitting device 12 lines light source
Claims (1)
を除く辺に隣接する短冊状の側面反射部とを有する一枚
の反射板を裏面反射部と各側面反射部との境界で直角に
折り曲げて裏側面一体型反射板とし、この裏側面一体型
反射板を透明な導光板と接着させて面発光装置に組み込
む面発光装置の製造方法において、一枚の反射板を折り
曲げる前に裏面反射部と各側面反射部との境界に、幅0.
05〜0.5mmの継ぎ部分を少なくとも１個所残して鋭利な
刃物で細線状の切れ目を入れることを特徴とする面発光
装置の製造方法。1. A single reflecting plate having a rectangular back surface reflecting portion and a strip-shaped side surface reflecting portion adjacent to at least one side thereof at right angles at a boundary between the back surface reflecting portion and each side surface reflecting portion. In a method of manufacturing a surface light emitting device to be folded and folded into a back side integrated reflector, which is bonded to a transparent light guide plate and incorporated into a surface light emitting device, the back surface reflection is performed before bending one reflector. Width of 0.
A method for manufacturing a surface light emitting device, characterized in that a thin line-shaped cut is made with a sharp blade while leaving at least one joint portion of 05 to 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4309369A JP2574199B2 (en) | 1992-10-22 | 1992-10-22 | Manufacturing method of surface emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4309369A JP2574199B2 (en) | 1992-10-22 | 1992-10-22 | Manufacturing method of surface emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06138326A JPH06138326A (en) | 1994-05-20 |
| JP2574199B2 true JP2574199B2 (en) | 1997-01-22 |
Family
ID=17992177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4309369A Expired - Fee Related JP2574199B2 (en) | 1992-10-22 | 1992-10-22 | Manufacturing method of surface emitting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2574199B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH089370Y2 (en) * | 1987-09-30 | 1996-03-21 | トヨタ自動車株式会社 | Cooling water outlet member for internal combustion engine |
| JP4801246B2 (en) * | 2000-09-29 | 2011-10-26 | オプトレックス株式会社 | Liquid crystal display |
-
1992
- 1992-10-22 JP JP4309369A patent/JP2574199B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06138326A (en) | 1994-05-20 |
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