JP2559661B2 - Method for forming halftone dot pattern of light guide plate - Google Patents
Method for forming halftone dot pattern of light guide plateInfo
- Publication number
- JP2559661B2 JP2559661B2 JP5013867A JP1386793A JP2559661B2 JP 2559661 B2 JP2559661 B2 JP 2559661B2 JP 5013867 A JP5013867 A JP 5013867A JP 1386793 A JP1386793 A JP 1386793A JP 2559661 B2 JP2559661 B2 JP 2559661B2
- Authority
- JP
- Japan
- Prior art keywords
- halftone dot
- guide plate
- light guide
- pattern
- dot pattern
- 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
- 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、表示用あるいは照明
用の面光源に使用される導光板の表面に網点パターンを
形成する導光板の網点パターン形成方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a halftone dot pattern on a light guide plate for forming a halftone dot pattern on the surface of a light guide plate used for a surface light source for display or illumination.
【０００２】[0002]
【従来の技術】図２は従来方法により形成された網点パ
ターンを有する導光板の側断面図である。同図中、１は
アクリル板等の透明な板材、２はこの板材１の表面にパ
ターン形成されたインク層である。2. Description of the Related Art FIG. 2 is a side sectional view of a light guide plate having a halftone dot pattern formed by a conventional method. In the figure, 1 is a transparent plate material such as an acrylic plate, and 2 is an ink layer patterned on the surface of the plate material 1.
【０００３】上記インク層２は、例えば図３に示すよう
な網点バターンとなるように、シルク印刷によって形成
されている。そして、この網点パターンを有した板材１
が導光板として、自発光表示板用面光源，自発光インテ
リア用面光源，面発光照明器具などに使用される。The ink layer 2 is formed by silk printing so as to form a halftone dot pattern as shown in FIG. Then, the plate material 1 having this halftone dot pattern
Is used as a light guide plate in surface light sources for self-luminous display plates, surface light sources for self-luminous interiors, surface-emitting lighting equipment, and the like.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
導光板の網点パターン形成方法にあっては、シルク印刷
でパターン形成を行っているため、平面にしか網点パタ
ーンを印刷することができず、曲面を有した導光板に対
応することができないという問題点があった。However, in the conventional halftone dot pattern forming method for the light guide plate, since the pattern is formed by silk printing, the halftone dot pattern can be printed only on a flat surface. However, there is a problem in that it cannot be applied to a light guide plate having a curved surface.
【０００５】この発明は、上記のような問題点に着目し
てなされたもので、平面だけでなく二次曲面あるいは三
次曲面を有した導光板に対しても容易に網点パターンを
形成することが可能な導光板の網点パターン形成方法を
提供することを目的としている。The present invention has been made in view of the above problems, and can easily form a halftone dot pattern not only on a flat surface but also on a light guide plate having a quadric surface or a cubic surface. It is an object of the present invention to provide a method for forming a halftone dot pattern of a light guide plate that can achieve the above.
【０００６】[0006]
【課題を解決するための手段】この発明の導光板の網点
パターン形成方法は、ゴムシート上に感光性フィルムを
密着させ、その上に網点の反転パターンのフォトマスク
を密着させ、露光，現像処理を行って網点の反転パター
ンを形成した後、この反転パターンと導光板との間に接
着剤を介在させて両者を密着させることにより前記反転
パターンの感光性フィルムを導光板の表面に転写し、そ
の後サンドブラスト処理を施して感光性フィルムを剥離
することにより導光板の表面に網点パターンを形成する
ようにしたものである。A method of forming a halftone dot pattern of a light guide plate according to the present invention comprises exposing a photosensitive film on a rubber sheet and a photomask having a reverse pattern of halftone dots on the photosensitive film. After performing a development process to form a halftone dot inversion pattern, an adhesive is interposed between the inversion pattern and the light guide plate to bring them into close contact with each other to form a photosensitive film of the inversion pattern on the surface of the light guide plate. By transferring and then sandblasting the photosensitive film, a halftone dot pattern is formed on the surface of the light guide plate.
【０００７】[0007]
【作用】この発明の導光板の網点パターン形成方法にお
いては、ゴムシート上に感光性フィルムを密着させて露
光を行い、この露光及び現像処理とサンドブラスト処理
によりパターン形成を行っているので、二次曲面や三次
曲面を有した導光板にも対応することができる。In the method of forming a halftone dot pattern of a light guide plate according to the present invention, a photosensitive film is brought into close contact with a rubber sheet for exposure, and the pattern is formed by this exposure and development processing and sandblast processing. It can also be applied to a light guide plate having a quadric surface or a cubic surface.
【０００８】[0008]
【実施例】図１はこの発明の一実施例を示す側断面図で
あり、網点パターンの形成過程を示している。まず、図
１の（ａ）に示すように、ゴムシート３上に感光性フィ
ルム４を密着させ、更にその上に網点の反転パターンの
フォトマスク５を密着させる。図の５ａが光透過部、５
ｂが遮光部（網点部）である。そして、その上から高圧
水銀灯などを使用して紫外線６を照射し、露光を行う。1 is a side sectional view showing an embodiment of the present invention, showing a process of forming a halftone dot pattern. First, as shown in FIG. 1A, a photosensitive film 4 is brought into close contact with a rubber sheet 3, and a photomask 5 having a halftone dot reversal pattern is brought into close contact therewith. In the figure, 5a is a light transmitting portion, 5
b is a light shielding part (halftone dot part). Then, ultraviolet rays 6 are radiated from above using a high pressure mercury lamp or the like to perform exposure.
【０００９】次に、図１の（ｂ）に示すように、フォト
マスク５を剥がし、現像液７を塗布して現像処理を行っ
た後、洗浄を行う。これにより、ゴムシート３上に網点
の反転パターンの感光膜４ａが形成される。Next, as shown in FIG. 1B, the photomask 5 is peeled off, a developing solution 7 is applied and a developing process is performed, and then cleaning is performed. As a result, the photosensitive film 4a having a halftone dot reversal pattern is formed on the rubber sheet 3.
【００１０】次に、図１の（ｃ）に示すように、上記形
成された反転パターンと導光板１ａとの間に接着剤８を
介在（何れかに塗布すれば良い）させて両者を密着させ
る（貼り合せる）。これにより、上記反転パターンの感
光性フィルム４の感光膜４ａが導光板１ａの表面に転写
される。Next, as shown in FIG. 1 (c), an adhesive 8 is interposed between the above-mentioned inverted pattern and the light guide plate 1a (which may be applied to either one) to bring them into close contact with each other. Let (bond). As a result, the photosensitive film 4a of the photosensitive film 4 having the reverse pattern is transferred onto the surface of the light guide plate 1a.
【００１１】その後、図１の（ｄ）に示すように、研磨
材９等を用いてサンドブラスト(sandblasting)処理を施
す。そして、図１の（ｅ）に示すように、上記転写され
た反転パターンの感光性フィルム４の感光膜４ａ及び接
着剤８を剥離液を用いて剥離する。これにより、導光板
１ａの表面に網点パターンが形成される。After that, as shown in FIG. 1D, sandblasting treatment is performed using an abrasive 9 or the like. Then, as shown in (e) of FIG. 1, the photosensitive film 4a of the photosensitive film 4 having the transferred reverse pattern and the adhesive 8 are peeled off by using a peeling liquid. As a result, a halftone dot pattern is formed on the surface of the light guide plate 1a.
【００１２】ここで、上記の網点パターンの形成に際し
ては、従来のようにシルク印刷ではなく、ゴムシート３
上に感光性フィルム４を密着させて露光を行い、この露
光及び現像処理とサンドブラスト処理によって網点をパ
ターン形成しているので、平面はもちろん、二次曲面や
三次曲面を有した導光板１ａに対しても容易に網点パタ
ーンを形成することができる。Here, when forming the above-mentioned halftone dot pattern, the rubber sheet 3 is used instead of silk printing as in the conventional case.
The photosensitive film 4 is brought into close contact with the upper surface for exposure, and halftone dots are formed by patterning by this exposure and development processing and sand blasting processing. A halftone dot pattern can be easily formed even with respect to it.
【００１３】[0013]
【発明の効果】以上のように、この発明によれば、ゴム
シート上に設けた感光性フィルムの上に網点の反転パタ
ーンのフォトマスクを密着させて露光を行い、この露光
及び現像処理で形成された反転パターンを導光板に転写
し、サンドブラスト処理を行うことで網点のパターン形
成を行うようにしたため、平面だけでなく二次曲面ある
いは三次曲面を有した導光板に対しても容易に網点パタ
ーンを形成することができるという効果がある。As described above, according to the present invention, a photomask having a halftone dot reversal pattern is brought into close contact with a photosensitive film provided on a rubber sheet to perform exposure. Since the formed inversion pattern is transferred to the light guide plate and the halftone dot pattern is formed by performing sandblasting, it is easy to apply not only to a flat surface but also to a light guide plate having a quadric surface or a cubic surface. There is an effect that a halftone dot pattern can be formed.
【図１】 この発明の一実施例を示す側断面図FIG. 1 is a side sectional view showing an embodiment of the present invention.
【図２】 従来例を示す側断面図FIG. 2 is a side sectional view showing a conventional example.
【図３】 網点パターンの一例を示す平面図FIG. 3 is a plan view showing an example of a halftone dot pattern.
１ａ 導光板 ３ ゴムシート ４ 感光性フィルム ５ フォトマスク ８ 接着剤 1a Light guide plate 3 Rubber sheet 4 Photosensitive film 5 Photomask 8 Adhesive
Claims (1)
せ、その上に網点の反転パターンのフォトマスクを密着
させ、露光，現像処理を行って網点の反転パターンを形
成した後、この反転パターンと導光板との間に接着剤を
介在させて両者を密着させることにより前記反転パター
ンの感光性フィルムを導光板の表面に転写し、その後サ
ンドブラスト処理を施して感光性フィルムを剥離するこ
とにより導光板の表面に網点パターンを形成することを
特徴とする導光板の網点パターン形成方法。1. A rubber sheet is brought into close contact with a photosensitive film, a photomask having a halftone dot reversal pattern is closely adhered thereto, and exposure and development are carried out to form a halftone dot reversal pattern. By transferring the photosensitive film of the reversal pattern to the surface of the light guide plate by interposing an adhesive agent between the pattern and the light guide plate and adhering them, and then performing sandblasting to peel off the photosensitive film. A method for forming a halftone dot pattern on a light guide plate, which comprises forming a halftone dot pattern on the surface of the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5013867A JP2559661B2 (en) | 1993-01-29 | 1993-01-29 | Method for forming halftone dot pattern of light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5013867A JP2559661B2 (en) | 1993-01-29 | 1993-01-29 | Method for forming halftone dot pattern of light guide plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06230374A JPH06230374A (en) | 1994-08-19 |
| JP2559661B2 true JP2559661B2 (en) | 1996-12-04 |
Family
ID=11845198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5013867A Expired - Lifetime JP2559661B2 (en) | 1993-01-29 | 1993-01-29 | Method for forming halftone dot pattern of light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2559661B2 (en) |
-
1993
- 1993-01-29 JP JP5013867A patent/JP2559661B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06230374A (en) | 1994-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960604 |