JPH04355409A - Transparent light conductive body for surface emission device and manufacture thereof - Google Patents
Transparent light conductive body for surface emission device and manufacture thereofInfo
- Publication number
- JPH04355409A JPH04355409A JP3157523A JP15752391A JPH04355409A JP H04355409 A JPH04355409 A JP H04355409A JP 3157523 A JP3157523 A JP 3157523A JP 15752391 A JP15752391 A JP 15752391A JP H04355409 A JPH04355409 A JP H04355409A
- Authority
- JP
- Japan
- Prior art keywords
- transparent light
- light guide
- light
- layer
- transparent
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 238000007711 solidification Methods 0.000 claims abstract description 3
- 230000008023 solidification Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 4
- 239000007787 solid Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 42
- 238000009792 diffusion process Methods 0.000 description 14
- 239000012790 adhesive layer Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000149 argon plasma sintering Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、液晶パネルなどのバ
ックライトなどの面発光装置に用いられる透明導光体の
製造方法に関するものである。詳しくは、透明導光体の
一側端面の線光源からの入射光による表面輝度が均一で
、しかも拡散光の発光効率のよい任意の形状の透明導光
体を容易に得ることができるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a transparent light guide used in a surface emitting device such as a backlight for a liquid crystal panel. Specifically, it is possible to easily obtain a transparent light guide of any shape that has uniform surface brightness due to incident light from a line light source on one end surface of the transparent light guide and has good emission efficiency of diffused light. be.
【０００２】0002
【従来の技術】従来の面発光装置用パネルは、予め形成
された板状の透明導光板の出光面と反対側の面上に、塗
布法や印刷法によって、任意のパターン状の光散乱物質
を形成していた。[Prior Art] Conventional panels for surface-emitting devices are manufactured by applying a light-scattering substance in an arbitrary pattern onto the surface opposite to the light-emitting surface of a pre-formed transparent light guide plate, using a coating method or a printing method. was forming.
【０００３】0003
【発明が解決しようとする課題】しかし、従来の面発光
装置用パネルの製造方法は、光散乱物質の形成が、平坦
面などの印刷適性のある表面形状の導光板に限られるの
で、任意の立体形状の透明導光体に対応できなかった。[Problems to be Solved by the Invention] However, in the conventional method for manufacturing panels for surface emitting devices, the formation of light scattering substances is limited to light guide plates with surface shapes suitable for printing, such as flat surfaces. It was not possible to deal with three-dimensional transparent light guides.
【０００４】また、光拡散物質層をパターン化するのに
いちいちマスキングを施して塗布したり、スクリーン印
刷機にかけたりするので、透明導光板の載せ替えや作業
に多くの手間、時間がかかり生産性が悪かった。この発
明の目的は、上記のような問題を解決することにあり、
拡散光の発光効率がよい任意の立体形状の面発光装置用
の透明導光体を生産性よく製造することにある。[0004] Furthermore, in order to pattern the light-diffusing material layer, it is necessary to apply masking and apply it each time or to use a screen printing machine, so it takes a lot of effort and time to replace the transparent light guide plate and reduces productivity. was bad. The purpose of this invention is to solve the above problems,
An object of the present invention is to manufacture with high productivity a transparent light guide for a surface emitting device having an arbitrary three-dimensional shape and having a good emission efficiency of diffused light.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに、この発明の面発光装置用の透明導光体の製造方法
は、パターン状の光拡散層を含む転写層が形成された転
写シートを、成形用金型内に挟み込み、成形後に透明導
光体となる溶融樹脂を金型内に射出し、冷却固化後、成
形された透明導光体から基体シートを剥離することによ
り、成形と同時に成形体表面に転写層を転写するように
構成した。[Means for Solving the Problems] In order to achieve the above object, the method for manufacturing a transparent light guide for a surface emitting device of the present invention provides a method for manufacturing a transparent light guide for a surface emitting device, in which a transfer layer including a patterned light diffusing layer is formed. The sheet is inserted into a mold for molding, and after molding, the molten resin that will become the transparent light guide is injected into the mold, and after cooling and solidifying, the base sheet is peeled off from the molded transparent light guide. At the same time, a transfer layer was transferred onto the surface of the molded body.
【０００６】以下、図面を参照しながらこの発明の実施
例を詳しく説明する。この発明の面発光装置用の製造方
法について説明する（図１参照）。はじめに、この発明
の製造方法に用いる転写シート１について説明する（図
２参照）。[0006] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A manufacturing method for a surface emitting device according to the present invention will be explained (see FIG. 1). First, the transfer sheet 1 used in the manufacturing method of the present invention will be explained (see FIG. 2).
【０００７】転写シート１は、基体シート２上にパター
ン状に形成された光拡散層３を含む転写層が形成された
ものである。基体シート２は、転写シート１の基体シー
トとして通常に用いられるものでよく、たとえば、ＰＥ
Ｔなどのプラスチックシートなどを使うとよい。The transfer sheet 1 has a transfer layer formed on a base sheet 2, including a light diffusing layer 3 formed in a pattern. The base sheet 2 may be one commonly used as the base sheet for the transfer sheet 1, for example, PE.
It is best to use a plastic sheet such as T.
【０００８】転写シート１の転写層の一構成層である光
拡散層３は、光拡散部３１、３１…から構成されており
、透明導光体５中を導光してきた光を散乱させ、出光面
６に向かって拡散させる層である。その材質は炭酸カル
シウム、シリカなどのマット剤を含有した光拡散性イン
キである。必要により、構成インキ中に粘着剤を含有し
て、透明導光体５との融着性がさらによい層としてもよ
い。
光拡散層３は、スクリーン印刷法、グラビア印刷法など
によって基体シート２上に設けられる。The light diffusing layer 3, which is a constituent layer of the transfer layer of the transfer sheet 1, is composed of light diffusing parts 31, 31, . . . , and scatters the light guided through the transparent light guide 5. This is a layer that diffuses light toward the light exit surface 6. The material is a light-diffusing ink containing matting agents such as calcium carbonate and silica. If necessary, an adhesive may be contained in the constituent ink to provide a layer with even better fusion properties with the transparent light guide 5. The light diffusion layer 3 is provided on the base sheet 2 by a screen printing method, a gravure printing method, or the like.
【０００９】光拡散部３１、３１…の形状は、ドット状
やストライプ状、スクエア状、チェーン状などがある。
光拡散層３は、上記のような各種形状の光拡散部３１、
３１…によって、その面積分布が透明導光体の面発光輝
度分布に反比例するようにグラデーション状に形成する
のが好ましい。これは、面発光の輝度ムラを補うのに効
果的である。The shapes of the light diffusing parts 31, 31, . . . include dots, stripes, squares, chains, and the like. The light diffusing layer 3 includes light diffusing portions 31 of various shapes as described above,
31... is preferably formed in a gradation shape so that the area distribution is inversely proportional to the surface emitting luminance distribution of the transparent light guide. This is effective in compensating for uneven brightness due to surface emission.
【００１０】転写シート１の転写層は、必要により、基
体シート２と光拡散層３との間に透明な剥離層を設けた
ものでもよい。これは、基体シート２の剥離性をさらに
上げるのに効果的である。剥離層は、反射性を有する物
質からなっていてもよい。これは、光拡散層３を剥離層
ごと透明導光体１に転写し、光拡散層３から外へ漏れる
光を剥離層で反射して再び透明導光体５内に戻すように
するときに効果的である。The transfer layer of the transfer sheet 1 may have a transparent peeling layer provided between the base sheet 2 and the light diffusing layer 3, if necessary. This is effective in further increasing the releasability of the base sheet 2. The release layer may be made of a reflective material. This is done when the light diffusing layer 3 is transferred to the transparent light guide 1 along with the peeling layer, and the light leaking out from the light diffusing layer 3 is reflected by the peeling layer and returned to the transparent light guide 5. Effective.
【００１１】転写シート１の転写層は、必要により、光
拡散層３上に透明な接着層を設けたものでもよい。これ
は、光拡散層３と透明導光体５との融着性をさらに上げ
るのに効果的である。また、この場合、接着層を構成す
る樹脂としては、透明導光体５の材料と同質のものを用
い、透明導光体５の溶融樹脂を射出したときにこの接着
層も溶融し、接着層が透明導光体５と境目なく一体とな
って形成されるようにする。このようにして、透明導光
体５内部での全反射を確保し、透明導光体５内部での反
射光のロスを少なくすることもできる。転写シート１の
転写層は、剥離層、光拡散層３、接着層が順次形成され
たものであってもよい。The transfer layer of the transfer sheet 1 may have a transparent adhesive layer provided on the light diffusion layer 3, if necessary. This is effective in further increasing the fusion properties between the light diffusing layer 3 and the transparent light guide 5. In this case, the resin constituting the adhesive layer is made of the same material as the material of the transparent light guide 5, and when the molten resin of the transparent light guide 5 is injected, this adhesive layer also melts, and the adhesive layer is formed seamlessly and integrally with the transparent light guide 5. In this way, total reflection inside the transparent light guide 5 can be ensured, and loss of reflected light inside the transparent light guide 5 can be reduced. The transfer layer of the transfer sheet 1 may include a release layer, a light diffusion layer 3, and an adhesive layer formed in this order.
【００１２】次に、上記転写シート１を用いて、任意の
立体形状の透明導光体５を成形すると同時に、その表面
に転写層を転写し、光拡散層３を所定のパターン状に形
成する方法を説明する（図１参照）。[0012] Next, using the transfer sheet 1, a transparent light guide 5 having an arbitrary three-dimensional shape is formed, and at the same time, a transfer layer is transferred to the surface thereof, thereby forming a light diffusing layer 3 in a predetermined pattern. The method will be explained (see Figure 1).
【００１３】この方法に用いられる成形用金型４は、型
閉めされたとき成形用金型内に空間が形成され、その中
に成形樹脂を射出し充填することによって、樹脂が任意
の立体形状に型どられるものである。まず、上記転写シ
ート１の基体シート２側が金型内壁面に沿うように、成
形用金型４内に送り込み、所定の位置に位置決めし、型
閉めにより挟み込む。転写シート１が長尺の場合は、射
出成形装置用の箔送り装置を用いてロール状に卷かれた
転写シート１を連続的に順次送り込むとよい。次に、型
閉めされた成形用金型４内に、溶融樹脂を射出する。こ
のときに用いられる樹脂は、前記したように、成形後に
透明性と導光性を発揮する樹脂であり、アクリル樹脂、
ポリエステル樹脂、ポリカーボネート樹脂などの屈折率
が高く、内部反射率が高い樹脂、または、これらの樹脂
に蛍光顔料などを加えて側面での集光率をさらに上げた
集光性のプラスチックなどを使用すればよい。このよう
にして、任意の立体形状の透明導光体５の成形品を成形
すると同時に、その出光面３となる面と反対側の表面に
転写シート１の転写層を転写し、光拡散層３を所定のパ
ターン状に形成する。冷却固化を待って、透明導光体５
の成形品から基体シート２を剥離し、光拡散層３を有す
る任意の立体形状の面発光装置用の透明導光体が得られ
る。When the molding die 4 used in this method is closed, a space is formed inside the mold, and by injecting and filling the molding resin into the space, the resin can be formed into an arbitrary three-dimensional shape. It is modeled on First, the transfer sheet 1 is fed into the molding die 4 so that the base sheet 2 side is along the inner wall surface of the mold, positioned at a predetermined position, and sandwiched by closing the mold. When the transfer sheet 1 is long, it is preferable to continuously feed the transfer sheet 1 wound into a roll using a foil feeding device for an injection molding apparatus. Next, molten resin is injected into the closed molding die 4. As mentioned above, the resin used at this time is a resin that exhibits transparency and light guiding properties after molding, such as acrylic resin,
Use resins with a high refractive index and high internal reflectance, such as polyester resin or polycarbonate resin, or light-concentrating plastics that add fluorescent pigments to these resins to further increase the light-gathering efficiency on the sides. Bye. In this way, a molded product of a transparent light guide 5 having an arbitrary three-dimensional shape is molded, and at the same time, the transfer layer of the transfer sheet 1 is transferred to the surface opposite to the surface that will become the light emitting surface 3, and the light diffusing layer 3 is transferred. are formed into a predetermined pattern. Waiting for cooling and solidification, transparent light guide 5
By peeling the base sheet 2 from the molded product, a transparent light guide for a surface emitting device having an arbitrary three-dimensional shape and having a light diffusion layer 3 is obtained.
【００１４】この発明の製造方法によって得られる透明
導光体５は、その出光面６と反対側の面に光拡散部３１
、３１、…からなる光拡散層３を有し、その光拡散部３
１、３１、…が、透明導光体１表面から突出しないよう
に形成されるものとなる。つまり、光拡散層３を構成す
る光拡散部３１、３１、…は、透明導光体５の成形と同
時に一体となって形成されるため、透明導光体５表面内
にめり込んで形成される。光拡散部３１、３１、…が透
明導光体５表面内にめり込んでいる分、出光面６との距
離が短くなるため、拡散光の発光効率がよいものとなる
。透明導光体５の光拡散層３を有する面は、平滑であっ
てもよいし、光拡散部３１、３１、…のみだけが他の部
分よりもさらに引っ込んだ面となっていてもよい（図３
参照）。The transparent light guide 5 obtained by the manufacturing method of the present invention has a light diffusing section 31 on the surface opposite to the light exit surface 6.
, 31, . . .
1, 31, . . . are formed so as not to protrude from the surface of the transparent light guide 1. In other words, the light diffusing parts 31, 31, ... constituting the light diffusing layer 3 are integrally formed at the same time as the transparent light guide 5 is formed, and therefore are formed by sinking into the surface of the transparent light guide 5. . Since the light diffusing parts 31, 31, . . . are recessed into the surface of the transparent light guide 5, the distance from the light emitting surface 6 is shortened, so that the light emitting efficiency of the diffused light is improved. The surface of the transparent light guide 5 having the light diffusion layer 3 may be smooth, or only the light diffusion portions 31, 31, . . . may be more recessed than other parts ( Figure 3
reference).
【００１５】また、光拡散部３１、３１、…は、印刷層
であるので角ばった形状で基体シート２上に形成される
が、この発明の製造方法によって得られる透明導光体５
の光拡散部３１、３１、…は、透明導光体１の射出成形
時に射出樹脂の圧力によって、角のない丸みのある光拡
散部３１、３１、…とすることも可能である。よって、
光拡散部３１、３１、…一つ一つの出光面へ向かって発
光する表面積が増え、拡散光の発光効率がよいものとな
る（図３参照）。Furthermore, since the light diffusing parts 31, 31, . . . are printed layers, they are formed in an angular shape on the base sheet 2.
The light diffusing parts 31, 31, . . . can be formed into rounded light diffusing parts 31, 31, . . . without corners by the pressure of the injection resin during injection molding of the transparent light guide 1. Therefore,
The light diffusing parts 31, 31, . . . have an increased surface area for emitting light toward each light output surface, and the light emitting efficiency of the diffused light is improved (see FIG. 3).
【００１６】この発明の製造方法によって得られる透明
導光体を用いて、面発光装置とするには次のようにする
とよい。この発明によって得られた透明導光体５の一端
面に光源を配置し、出光面６側には、密着しない状態で
拡散層を配置するとよい。また、光漏れを防ぐために、
光拡散層３を有する面側には、光散乱反射効率のよい白
色塗りされた反射板を配置するとよい。また、透明導光
体５の光源が配置された端面と反対の面に白色シートを
配置してもよい。[0016] The transparent light guide obtained by the manufacturing method of the present invention can be used to produce a surface emitting device as follows. It is preferable that a light source is disposed on one end surface of the transparent light guide 5 obtained by the present invention, and a diffusion layer is disposed on the light exit surface 6 side without being in close contact with it. In addition, to prevent light leakage,
It is preferable to arrange a white-painted reflector plate with good light scattering and reflection efficiency on the side having the light diffusion layer 3. Furthermore, a white sheet may be placed on the opposite side of the end face of the transparent light guide 5 where the light source is placed.
【００１７】[0017]
【発明の効果】この発明の面発光装置用の透明導光体の
製造方法は、すでにパターン化された光拡散層を有する
転写シートを用いて、透明導光体の形成と光拡散層の形
成とを同時に行うので、光拡散層が形成された任意の立
体形状の透明導光体を得ることができる。また、パター
ン化された光拡散層を有する拡散効率のよい面発光装置
用の透明導光体が効率よく製造でき、生産性が向上する
。Effects of the Invention The method of manufacturing a transparent light guide for a surface emitting device of the present invention uses a transfer sheet having a patterned light diffusion layer to form a transparent light guide and a light diffusion layer. Since these steps are performed simultaneously, it is possible to obtain a transparent light guide having an arbitrary three-dimensional shape and having a light diffusing layer formed thereon. Moreover, a transparent light guide for a surface emitting device having a patterned light diffusion layer and having good diffusion efficiency can be manufactured efficiently, and productivity is improved.
【図１】この発明の面発光装置用の透明導光体の製造方
法の一工程を示す断面図である。FIG. 1 is a cross-sectional view showing one step of the method for manufacturing a transparent light guide for a surface emitting device according to the present invention.
【図２】この発明の製造方法に用いられる転写シートの
一実施例の断面図である。FIG. 2 is a sectional view of one embodiment of a transfer sheet used in the manufacturing method of the present invention.
【図３】この発明の製造方法によって得られる透明導光
体の一例を示す断面図である。FIG. 3 is a sectional view showing an example of a transparent light guide obtained by the manufacturing method of the present invention.
１ 転写シート ２ 基体シート ３ 光拡散層 ３１、３１… 光拡散部 ４ 成形用金型 ５ 透明導光体 ６ 出光面 1 Transfer sheet 2 Base sheet 3. Light diffusion layer 31, 31... Light diffusion section 4 Molding mold 5 Transparent light guide 6 Idemitsu surface
Claims (2)
形成された転写シートを、成形用金型内に挟み込み、成
形後に透明導光体となる溶融樹脂を金型内に射出し、冷
却固化後、成形された透明導光体から基体シートを剥離
することにより、成形と同時に成形体表面に転写層を転
写することを特徴とする面発光装置用の透明導光体の製
造方法。Claim 1: A transfer sheet on which a transfer layer including a patterned light diffusing layer is formed is placed in a mold for molding, and after molding, a molten resin that will become a transparent light guide is injected into the mold and cooled. A method for manufacturing a transparent light guide for a surface emitting device, characterized in that a transfer layer is transferred to the surface of the molded body at the same time as molding by peeling off the base sheet from the molded transparent light guide after solidification.
発光輝度分布に反比例するものである請求項１記載の面
発光装置用の透明導光体の製造方法。2. The method for manufacturing a transparent light guide for a surface emitting device according to claim 1, wherein the area distribution of the light diffusing layer is inversely proportional to the surface emission brightness distribution of the transparent light guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3157523A JPH07111486B2 (en) | 1991-05-31 | 1991-05-31 | Method for manufacturing transparent light guide for surface emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3157523A JPH07111486B2 (en) | 1991-05-31 | 1991-05-31 | Method for manufacturing transparent light guide for surface emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04355409A true JPH04355409A (en) | 1992-12-09 |
| JPH07111486B2 JPH07111486B2 (en) | 1995-11-29 |
Family
ID=15651536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3157523A Expired - Lifetime JPH07111486B2 (en) | 1991-05-31 | 1991-05-31 | Method for manufacturing transparent light guide for surface emitting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07111486B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011237361A (en) * | 2010-05-13 | 2011-11-24 | Seiko Epson Corp | Optical-type detection device, display device and electronic apparatus |
| JP2011237360A (en) * | 2010-05-13 | 2011-11-24 | Seiko Epson Corp | Optical type detection device, display device and electronic apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4068402B2 (en) * | 2001-10-26 | 2008-03-26 | 株式会社トッパンＴｄｋレーベル | Scratch card |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01241590A (en) * | 1988-03-23 | 1989-09-26 | Fujitsu Ltd | Surface lighting device |
| JPH026200A (en) * | 1988-06-24 | 1990-01-10 | Nissha Printing Co Ltd | Transfer material having light diffusion layer |
| JP3104905U (en) * | 2004-04-28 | 2004-10-21 | 順一 平林 | Baby coat |
-
1991
- 1991-05-31 JP JP3157523A patent/JPH07111486B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01241590A (en) * | 1988-03-23 | 1989-09-26 | Fujitsu Ltd | Surface lighting device |
| JPH026200A (en) * | 1988-06-24 | 1990-01-10 | Nissha Printing Co Ltd | Transfer material having light diffusion layer |
| JP3104905U (en) * | 2004-04-28 | 2004-10-21 | 順一 平林 | Baby coat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011237361A (en) * | 2010-05-13 | 2011-11-24 | Seiko Epson Corp | Optical-type detection device, display device and electronic apparatus |
| JP2011237360A (en) * | 2010-05-13 | 2011-11-24 | Seiko Epson Corp | Optical type detection device, display device and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07111486B2 (en) | 1995-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8382337B2 (en) | Lighting device, light spreading plate and method for manufacturing the same | |
| KR101083887B1 (en) | Light guiding plate, back light device and method for manufacturing light guiding plate | |
| US7986383B2 (en) | Liquid crystal display device having improved light guide plate | |
| US8507073B2 (en) | Exterior parts | |
| JP2005062541A (en) | Optical member and its manufacturing method, and surface emitting device and liquid crystal display device | |
| JP2005107020A (en) | Manufacturing method for backlight and diffusing plate and liquid crystal display device | |
| US20100157626A1 (en) | Light guide plate, method for manufacturing the same and backlight unit using the same | |
| JP3570777B2 (en) | Manufacturing method of surface emitting device | |
| JP3732253B2 (en) | Manufacturing method of lens sheet for liquid crystal display device | |
| TW201213973A (en) | Diffusion bar with spacer collar ring | |
| KR20110114641A (en) | Illuminating device, surface light source, and liquid crystal display device | |
| JPH04355409A (en) | Transparent light conductive body for surface emission device and manufacture thereof | |
| JPH0831217A (en) | Surface light source device | |
| JP2673323B2 (en) | Light guide plate for surface light source device and manufacturing method thereof | |
| US6929377B2 (en) | Light-reflective material and light source device using the same | |
| US7290920B2 (en) | Light guide plate and manufacturing method of the same | |
| JP3025107U (en) | Surface emitting device | |
| CN218181265U (en) | Quantum dot lens, backlight module and display device | |
| JP3025106U (en) | Surface emitting device | |
| CN102890305B (en) | Method for manufacturing light guide plate | |
| JPH08194220A (en) | Deformed type light transmission plate and its production | |
| JPH03163585A (en) | Manufacture of side illumination type display panel | |
| JP3013221U (en) | Surface emitting device | |
| JP4378564B2 (en) | Method for manufacturing case for backlight device | |
| JP2005037644A (en) | Pattern forming method of light guide plate for liquid crystal panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19980224 |