JPH06230375A - Dot pattern forming method for light transmission plate - Google Patents

Dot pattern forming method for light transmission plate

Info

Publication number
JPH06230375A
JPH06230375A JP5013868A JP1386893A JPH06230375A JP H06230375 A JPH06230375 A JP H06230375A JP 5013868 A JP5013868 A JP 5013868A JP 1386893 A JP1386893 A JP 1386893A JP H06230375 A JPH06230375 A JP H06230375A
Authority
JP
Japan
Prior art keywords
dot pattern
halftone dot
photomask
film
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.)
Pending
Application number
JP5013868A
Other languages
Japanese (ja)
Inventor
Toshiyuki Terada
俊行 寺田
Nobuo Matsui
宣夫 松井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stanley Electric Co Ltd
Original Assignee
Stanley Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to JP5013868A priority Critical patent/JPH06230375A/en
Publication of JPH06230375A publication Critical patent/JPH06230375A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To prevent the change of dot patterns from the initial state even if the patterns are formed continuously and to enable the pattern to be formed only on the quadratic curve in a short time by executing the pattern formation by exposing and development processing of a UV curing resin. CONSTITUTION:A film 3 consisting of the UV curing resin incorporated with a white pigment, such as silica, and having about 100mum thickness is brought into tight contact with a plate material (light transmission plate) 1, such as acrylic plate, and further a photomask 4 consisting of light transmission parts 4a and light shielding parts 4b on which the dot patterns is transferred is brought into tight contact with the top thereof. The photomask is then irradiated from above with UV rays 5 by using a high-pressure mercury lamp, etc. The photomask 4 is then peeled and a developer 6 is applied on the film 3 appearing thereon, i.e., the exposed parts 3a of the film 3. Finally, the plate material 1 subjected to exposing and developing is washed. As a result, the dot patterns are formed on the surface of the plate material 1. The formation of the patterns to the quadratic surface having the high accuracy and the stable quality in spite of the continuous formation is thus possible.

Description

【発明の詳細な説明】Detailed Description of the Invention

【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3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. 3 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、液晶表示用面光源に、また自発光表示
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 for a surface light source for liquid crystal display, a surface light source for self-luminous display plate, a surface light source for self-luminous interior, a surface-emitting lighting fixture, 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、次のような問題点が
あった。
However, the conventional method of forming a halftone dot pattern for a light guide plate has the following problems because the pattern is formed by silk printing.

【0005】(1)連続印刷を行った場合、インク濃度
が徐々に濃くなるので、網点パターンが初期状態に対し
て変化(反射率の上昇や面積の減少)してしまう。
(1) When continuous printing is performed, since the ink density gradually increases, the halftone dot pattern changes (increased reflectance and decreased area) with respect to the initial state.

【0006】(2)同様に、シルク版の目詰まりによ
り、網点の面積が減少する。
(2) Similarly, the area of halftone dots is reduced due to clogging of the silk plate.

【0007】(3)同じく、シルク版の伸びにより、網
点パターンの精度が低下し、位置がずれる。したがっ
て、以上の(1)〜(3)により大量に連続印刷するこ
とが難しい。
(3) Similarly, due to the elongation of the silk plate, the precision of the halftone dot pattern is lowered and the position is displaced. Therefore, it is difficult to continuously print a large amount by the above (1) to (3).

【0008】(4)インク濃度を濃くすると、シルク版
が目詰まりを起し易くなったり、乾燥後ひびが入ったり
するので、インクの濃度を上げて反射率を稼ぐことがで
きない。
(4) When the ink density is high, the silk plate is likely to be clogged or cracked after drying, so that it is not possible to increase the ink density to obtain the reflectance.

【0009】(5)インクに反射用のガラスビーズやス
チレンボールなどの微少粒子を混入した場合、目詰まり
を起し易く、またそのためメッシュを粗くすると、印刷
精度が低下してしまう。
(5) When fine particles such as glass beads or styrene balls for reflection are mixed in the ink, clogging is apt to occur, and if the mesh is roughened, the printing accuracy is lowered.

【0010】(6)平面にしか網点パターンを印刷する
ことができない。
(6) The halftone dot pattern can be printed only on the plane.

【0011】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、網点パターンの面積、位置の精度が
高く、連続してパターン形成を行っても網点パターンが
初期状態から変化することなく、反射率を任意に制御す
ることができるとともに、濃度を高くすることができ、
また短時間で、二次曲面にもパターン形成を行うことが
でき、品質の向上を図れる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 by paying attention to the above-mentioned problems, and the area and position of the halftone dot pattern are highly accurate, and the halftone dot pattern remains in the initial state even if pattern formation is continuously performed. The reflectance can be arbitrarily controlled without changing, and the density can be increased.
Another object of the present invention is to provide a halftone dot pattern forming method for a light guide plate, which can form a pattern on a quadric surface in a short time and can improve quality.

【0012】[0012]

【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、顔料等が混入された紫外線硬化性
樹脂からなる均一なフィルムを導光板に密着させ、この
上に網点パターンを写したフォトマスクを密着させ、露
光を行った後、前記フォトマスクを剥がして現像を行う
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。
According to the method of forming a halftone dot pattern of a light guide plate of the present invention, a uniform film made of an ultraviolet curable resin mixed with a pigment or the like is brought into close contact with the light guide plate, and a halftone dot pattern is formed thereon. The photomask on which the image is copied is brought into close contact, exposed, and then the photomask is peeled off and developed to form a halftone dot pattern on the surface of the light guide plate.

【0013】また、顔料等が混入された紫外線硬化性樹
脂からなる均一なフィルムを透明あるいは白色のフィル
ムに密着させ、その上に網点パターンを写したフォトマ
スクを密着させ、露光を行った後、フォトマスクを剥が
して現像を行い、そのパターン面を光透過率の高い接着
剤または両面接着テープを用いて導光板の表面に貼り付
け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。
Further, a uniform film made of an ultraviolet curable resin mixed with a pigment or the like is adhered to a transparent or white film, and a photomask having a halftone dot pattern is adhered thereon, and after exposure, , The photomask is peeled off and developed, and the pattern surface is attached to the surface of the light guide plate by using an adhesive or a double-sided adhesive tape having high light transmittance so that a halftone dot pattern is formed on the surface of the light guide plate. It was done.

【0014】[0014]

【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、紫外線露光によりパターン形成を行っているの
で、網点パターンの精度が高く、連続形成しても品質が
安定し、また二次曲面にも形成することができる。
In the method of forming a halftone dot pattern of a light guide plate according to the present invention, since the pattern is formed by exposure to ultraviolet light, the halftone dot pattern has a high accuracy and the quality is stable even when it is continuously formed. Can also be formed.

【0015】[0015]

【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、シリカ等の白色顔料が混入され
た紫外線硬化性樹脂からなる厚さ100μm程度の均一
なフィルム3をアクリル板等の板材(導光板)1に密着
させ、更にその上に網点パターンを写したフォトマスク
4を密着させる。図の4aが光透過部、4bが遮光部で
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5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. Figure 1
(A), a uniform film 3 made of an ultraviolet curable resin mixed with a white pigment such as silica and having a thickness of about 100 μm is closely adhered to a plate material (light guide plate) 1 such as an acrylic plate, and A photomask 4 having a halftone dot pattern thereon is closely attached. In the figure, 4a is a light transmitting portion and 4b is a light shielding portion. Then, ultraviolet rays 5 are radiated from above using a high pressure mercury lamp or the like to perform exposure.

【0016】次に図1の(b)に示すように、フォトマ
スク4を剥がし、そこに現れたフィルム3、つまり露光
されたフィルム3の露光部分3aに現像液6を塗布す
る。
Next, as shown in FIG. 1B, the photomask 4 is peeled off, and the developing solution 6 is applied to the film 3 exposed there, that is, the exposed portion 3a of the exposed film 3.

【0017】最後に、上記露光,現像が行われた板材1
を洗浄する。これにより、図1の(c)に示すように、
板材1の表面に網点パターンが形成される。
Finally, the plate material 1 that has been exposed and developed as described above.
To wash. As a result, as shown in (c) of FIG.
A halftone dot pattern is formed on the surface of the plate material 1.

【0018】ここで、上記のパターン形成に際しては、
従来のようにシルク印刷ではなく、紫外線露光によって
網点パターンを形成しているので、次のような利点があ
る。
Here, in forming the above pattern,
Since the halftone dot pattern is formed by exposure to ultraviolet rays instead of silk printing as in the past, there are the following advantages.

【0019】(1)紫外線露光のため、網点パターンの
面積、位置の精度が高く、連続露光を行ってもフォトマ
スク4の精度以上には変化しない。
(1) Due to the ultraviolet exposure, the precision of the area and position of the halftone dot pattern is high, and even if continuous exposure is performed, the precision does not change beyond the precision of the photomask 4.

【0020】(2)網点パターンの膜厚,濃度が初期状
態から変化せず、このため、反射率を一定に保つことが
でき、品質が安定する。
(2) The film thickness and density of the halftone dot pattern do not change from the initial state, so that the reflectance can be kept constant and the quality becomes stable.

【0021】(3)シルク印刷では白色顔料の濃度は7
%程度であったが、紫外線硬化性樹脂を用いているの
で、濃度をより高くすることができる。
(3) In silk printing, the concentration of white pigment is 7
%, But since the ultraviolet curable resin is used, the concentration can be increased.

【0022】(4)紫外線硬化を用いているので、硬化
時間は数秒で済み、大幅な時間短縮を図ることができ
る。
(4) Since ultraviolet curing is used, the curing time is only a few seconds, and the time can be greatly shortened.

【0023】(5)平面だけでなく、二次曲面にもパタ
ーンを形成することができる。
(5) The pattern can be formed not only on the plane but also on the quadric surface.

【0024】図2はこの発明の他の実施例を示す側断面
図である。ここではまず、図2の(a)に示すように、
図1の同様のフィルム3を透明あるいは白色の樹脂フィ
ルム7上に密着させ、更にその上に網点パターンを写し
たフォトマスク4を密着させる。そして、その上から紫
外線5を照射して露光を行った後、図2(b)に示すよ
うに、フォトマスク4を剥がしてフィルム3の露光部分
3aに現像液6を塗布する。これで、図2の(c)に示
すように、樹脂フィルム7上に網点パターンが形成され
る。
FIG. 2 is a side sectional view showing another embodiment of the present invention. Here, first, as shown in FIG.
The same film 3 shown in FIG. 1 is adhered to a transparent or white resin film 7, and a photomask 4 having a halftone dot pattern is adhered thereon. Then, after irradiating with ultraviolet rays 5 from above, the photomask 4 is peeled off and the developing solution 6 is applied to the exposed portion 3 a of the film 3, as shown in FIG. 2B. As a result, a halftone dot pattern is formed on the resin film 7 as shown in FIG.

【0025】次に図2の(d)に示すように、光透過率
の高い接着剤または両面接着テープ8を用いて上記形成
された網点パターン面を板材1の表面に貼り付ける。こ
れにより、板材1の表面に網点パターンを形成すること
ができる。
Next, as shown in FIG. 2D, the halftone dot pattern surface formed as described above is attached to the surface of the plate material 1 using an adhesive having a high light transmittance or a double-sided adhesive tape 8. Thereby, a halftone dot pattern can be formed on the surface of the plate material 1.

【0026】このような形成方法によっても、図1の実
施例と同様の作用効果を得ることができ、網点パターン
の面積、位置の精度が高く、連続してパターン形成を行
っても網点パターンが初期状態から変化することなく、
反射率を任意に制御することができるとともに、濃度を
高くすることができ、また短時間で、二次曲面にもパタ
ーン形成を行うことができ、品質の向上を図ることがで
きる。
Even with such a forming method, the same effect as that of the embodiment of FIG. 1 can be obtained, the area and position of the halftone dot pattern are highly accurate, and the halftone dots are formed even if the patterns are continuously formed. The pattern does not change from the initial state,
The reflectance can be controlled arbitrarily, the density can be increased, and the pattern can be formed on the quadric surface in a short time, so that the quality can be improved.

【0027】なお、上述の各実施例において、紫外線硬
化性樹脂からなるフィルム3には、白色顔料以外にもガ
ラスビーズ等の微少粒子を混入させても良い。
In each of the above-mentioned embodiments, the film 3 made of the ultraviolet curable resin may be mixed with fine particles such as glass beads in addition to the white pigment.

【0028】[0028]

【発明の効果】以上のように、この発明によれば、紫外
線硬化性樹脂の露光及び現像処理によりパターン形成を
行うようにしたため、網点パターンの面積、位置の精度
が高く、連続してパターン形成を行っても網点パターン
が初期状態から変化することはなく、反射率も任意に制
御することができるとともに、濃度を高くすることがで
き、また短時間で、二次曲面にもパターン形成を行うこ
とができ、品質の向上を図れるという効果がある。
As described above, according to the present invention, since the pattern is formed by the exposure and development processing of the ultraviolet curable resin, the area and position of the halftone dot pattern are highly accurate and the pattern is continuously formed. The halftone dot pattern does not change from the initial state even after formation, the reflectance can be controlled arbitrarily, the density can be increased, and the pattern can be formed on the quadric surface in a short time. It is possible to improve the quality.

【図面の簡単な説明】[Brief description of drawings]

【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】 この発明の他の実施例を示す側断面図FIG. 2 is a side sectional view showing another embodiment of the present invention.

【図3】 従来例を示す側断面図FIG. 3 is a side sectional view showing a conventional example.

【図4】 網点パターンの一例を示す平面図FIG. 4 is a plan view showing an example of a halftone dot pattern.

【符号の説明】[Explanation of symbols]

1 板材(導光板) 3 フィルム 4 フォトマスク 7 樹脂フィルム 8 接着剤または両面接着テープ 1 plate material (light guide plate) 3 film 4 photomask 7 resin film 8 adhesive or double-sided adhesive tape

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 顔料等が混入された紫外線硬化性樹脂か
らなる均一なフィルムを導光板に密着させ、この上に網
点パターンを写したフォトマスクを密着させ、露光を行
った後、前記フォトマスクを剥がして現像を行うことに
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 uniform film made of an ultraviolet curable resin mixed with a pigment or the like is adhered to a light guide plate, a photomask having a halftone dot pattern is adhered on the film, and then the photomask is exposed. A method for forming a halftone dot pattern of a light guide plate, which comprises forming a halftone dot pattern on the surface of the light guide plate by removing the mask and performing development.
【請求項2】 顔料等が混入された紫外線硬化性樹脂か
らなる均一なフィルムを透明あるいは白色のフィルムに
密着させ、その上に網点パターンを写したフォトマスク
を密着させ、露光を行った後、フォトマスクを剥がして
現像を行い、そのパターン面を光透過率の高い接着剤ま
たは両面接着テープを用いて導光板の表面に貼り付ける
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。
2. A uniform film made of an ultraviolet curable resin mixed with a pigment or the like is adhered to a transparent or white film, and a photomask having a halftone dot pattern is adhered thereon, and after exposure, It is possible to form a halftone dot pattern on the surface of the light guide plate by peeling off the photomask, performing development, and attaching the pattern surface to the surface of the light guide plate using an adhesive or double-sided adhesive tape with high light transmittance. A method for forming a halftone dot pattern on a light guide plate.
JP5013868A 1993-01-29 1993-01-29 Dot pattern forming method for light transmission plate Pending JPH06230375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5013868A JPH06230375A (en) 1993-01-29 1993-01-29 Dot pattern forming method for light transmission plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5013868A JPH06230375A (en) 1993-01-29 1993-01-29 Dot pattern forming method for light transmission plate

Publications (1)

Publication Number Publication Date
JPH06230375A true JPH06230375A (en) 1994-08-19

Family

ID=11845224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5013868A Pending JPH06230375A (en) 1993-01-29 1993-01-29 Dot pattern forming method for light transmission plate

Country Status (1)

Country Link
JP (1) JPH06230375A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100376950C (en) * 2003-11-13 2008-03-26 鸿富锦精密工业(深圳)有限公司 Back light module group and its light conductive plate
CN100405171C (en) * 2003-08-22 2008-07-23 鸿富锦精密工业(深圳)有限公司 Optical guiding panel and its preparation and background module therewith
CN100405153C (en) * 2003-11-29 2008-07-23 鸿富锦精密工业(深圳)有限公司 Light conducting plate and backlight module
CN100419529C (en) * 2003-08-28 2008-09-17 鸿富锦精密工业(深圳)有限公司 Back-to-light module and its light conducting plate and light conducting plate mfg. process
CN110770644A (en) * 2018-01-23 2020-02-07 株式会社Lg化学 Color conversion film, and backlight unit and display device including the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04199002A (en) * 1990-11-29 1992-07-20 Kimoto & Co Ltd Light guide plate for planar light source
JPH04199001A (en) * 1990-11-29 1992-07-20 Kimoto & Co Ltd Light guide plate for planar light source

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04199002A (en) * 1990-11-29 1992-07-20 Kimoto & Co Ltd Light guide plate for planar light source
JPH04199001A (en) * 1990-11-29 1992-07-20 Kimoto & Co Ltd Light guide plate for planar light source

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100405171C (en) * 2003-08-22 2008-07-23 鸿富锦精密工业(深圳)有限公司 Optical guiding panel and its preparation and background module therewith
CN100419529C (en) * 2003-08-28 2008-09-17 鸿富锦精密工业(深圳)有限公司 Back-to-light module and its light conducting plate and light conducting plate mfg. process
CN100376950C (en) * 2003-11-13 2008-03-26 鸿富锦精密工业(深圳)有限公司 Back light module group and its light conductive plate
CN100405153C (en) * 2003-11-29 2008-07-23 鸿富锦精密工业(深圳)有限公司 Light conducting plate and backlight module
CN110770644A (en) * 2018-01-23 2020-02-07 株式会社Lg化学 Color conversion film, and backlight unit and display device including the same

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