JPH11286083A - Glare-proof film - Google Patents
Glare-proof filmInfo
- Publication number
- JPH11286083A JPH11286083A JP10106915A JP10691598A JPH11286083A JP H11286083 A JPH11286083 A JP H11286083A JP 10106915 A JP10106915 A JP 10106915A JP 10691598 A JP10691598 A JP 10691598A JP H11286083 A JPH11286083 A JP H11286083A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- hard coat
- particle size
- resin
- glare
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/111—Anti-reflection coatings using layers comprising organic materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、防眩性フィルムに
関し、ディスプレイ画面が透視できるCRTやLCD等
の表面基材に適した防眩性ハードコートフィルム、特に
カラーディスプレイ画面が透視できるCRTやLCD等
の表面基材に使用する防眩性ハードコートフィルムに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-glare film, and more particularly to an anti-glare hard coat film suitable for a surface substrate such as a CRT or an LCD which allows a display screen to be seen through, particularly a CRT or an LCD which allows a color display screen to be seen through. The present invention relates to an antiglare hard coat film used for a surface base material such as
【0002】[0002]
【従来の技術】近年のCRTや、フラットパネルディス
プレイ画面への、外光の映り込みや、空気層との界面で
生じる反射光が非常に問題となり画面を見難いものにし
ていた。例えばブラウン管の映像を見る場合、窓や蛍光
燈の鏡面反射像が映像に重なり、該映像が見にくくなる
現象は日常経験することである。この映り込みを防止す
るためにシリカ粒子を含有した、マットコーティングを
施す方法等が知られている。しかし、カラーディスプレ
イ特にカラーLCDに使用した場合、カラーフィルタの
ピッチ等にも依存するが、点状に干渉が発生するという
問題がある。この現象は同じ粒径の粒子を使用した場
合、ヘイズが低い、つまり粒子密度が低いほうが発生し
やすい。このため従来は透過性を犠牲にし粒子の密度を
上げ干渉の発生を抑えている。このためヘイズは上昇し
画面が非常に見ずらいものになっていた。2. Description of the Related Art In recent years, reflection of external light on a CRT or a flat panel display screen or reflected light generated at an interface with an air layer has become a serious problem, making it difficult to view the screen. For example, when viewing an image of a cathode ray tube, a phenomenon in which a specular reflection image of a window or a fluorescent lamp is superimposed on the image and the image becomes difficult to see is a daily experience. A method of applying a mat coating containing silica particles in order to prevent the reflection is known. However, when it is used for a color display, especially a color LCD, there is a problem that interference occurs in a dot-like manner, though it depends on the pitch of the color filters and the like. This phenomenon is more likely to occur when particles having the same particle size are used, in which the haze is low, that is, the particle density is low. For this reason, conventionally, the density of the particles has been increased at the expense of transparency to suppress the occurrence of interference. This caused the haze to rise and the screen to be very unsightly.
【0003】[0003]
【発明が解決しようとする課題】従って本発明は、低ヘ
イズで干渉の発生を防止し、防眩効果、耐スクラッチ
性、透明性に優れかつ画質劣化を抑えた防眩性ディスプ
レイ用フィルムを提供するものである。SUMMARY OF THE INVENTION Accordingly, the present invention provides a film for an anti-glare display which has a low haze, prevents the occurrence of interference, is excellent in anti-glare effect, scratch resistance, transparency and suppresses image quality deterioration. Is what you do.
【0004】[0004]
【課題を解決するための手段】本発明は、透明基材フィ
ルム(1)上に、平均粒径0.6〜20μmの粒子
(2)と、平均粒径1〜500nmの微粒子(3)とハ
ードコート樹脂(4)とを主成分とするハードコート層
(5)を形成したことを特徴とする防眩性フィルムであ
り、前記粒子(2)がハードコート樹脂(4)に対して
0.05〜30重量%、前記微粒子(3)がハードコー
ト樹脂(4)に対して0.001〜80重量%の含量で
ある前記の防眩性フィルムであり、ヘイズが30%以下
である前記の防眩性フィルムであり、前記微粒子(3)
がコロイダルシリカであることを特徴とした前記の防眩
性フィルムである。According to the present invention, there are provided a transparent substrate film (1) comprising: particles (2) having an average particle size of 0.6 to 20 μm; and fine particles (3) having an average particle size of 1 to 500 nm. An anti-glare film comprising a hard coat layer (5) containing a hard coat resin (4) as a main component, wherein the particles (2) are added to the hard coat resin (4) in an amount of 0. The antiglare film, wherein the content of the fine particles (3) is 0.001 to 80% by weight based on the hard coat resin (4), and the haze is 30% or less. An antiglare film, wherein said fine particles (3)
Is colloidal silica.
【0005】さらに透明基材フィルム(1)とハードコ
ート層(5)との間に他のハードコート層(6)を設け
た前記の防眩性フィルム すなわち本発明は、基材フィルム上に少なくとも電離放
射線硬化型樹脂と干渉防止のため平均粒径1〜500n
mの微粒子と防眩性付与のため平均粒径0.6〜20μ
mの粒子とを含む塗液をコーティングしてハードコート
層を形成し、カラーディスプレイ上で干渉が少なく、防
眩性に優れたディスプレイ用フィルムを得るためのもの
である。[0005] Further, the above-mentioned antiglare film in which another hard coat layer (6) is provided between the transparent base film (1) and the hard coat layer (5). Average particle size 1-500n to prevent interference with ionizing radiation-curable resin
m and an average particle diameter of 0.6-20 μm for imparting antiglare properties
A coating liquid containing particles of m is coated to form a hard coat layer to obtain a display film having little interference on a color display and excellent antiglare properties.
【0006】[0006]
【発明の実施態様】本発明に用いる透明基材フィルム
(1)としては、特に制限はないが、加工適性や用途的
に考えれば、高い透明性を有するフィルムを使用するこ
とが好ましく、例えば三酢酸セルロース、アセテート等
のセルロース系樹脂や、ポリエチレンテレフタレート、
ポリエチレンナフタレート等のポリエステル系樹脂や、
ポリメチルメタクレート等のアクリル系樹脂や、ポリカ
ーボネート樹脂類等の、人造樹脂フィルムを使用するこ
とが好ましい。また、基材上に、基材とハードコート層
(5)との密着力を向上させる樹脂層(7)が形成され
てあってもよい。BEST MODE FOR CARRYING OUT THE INVENTION The transparent substrate film (1) used in the present invention is not particularly limited, but it is preferable to use a film having high transparency in consideration of workability and application. Cellulose-based resins such as cellulose acetate and acetate, polyethylene terephthalate,
Polyester resin such as polyethylene naphthalate,
It is preferable to use an artificial resin film such as an acrylic resin such as polymethyl methacrylate or a polycarbonate resin. Further, a resin layer (7) for improving the adhesion between the substrate and the hard coat layer (5) may be formed on the substrate.
【0007】本発明に防眩性付与のため用いる粒子
(2)の粒径は、画像劣化を抑えるためには、小さい程
良いが、表面の凹凸により充分な防眩性を得るためには
0.6μm以上が必要であり、表面平滑性等外見上から
20μm以下のものが好ましく、より好ましくは1.0
μm以上10μm以下のものである。The particle size of the particles (2) used for imparting the antiglare property in the present invention is preferably as small as possible in order to suppress the image deterioration, but is not preferable in order to obtain a sufficient antiglare property due to the unevenness of the surface. 0.6 μm or more, and preferably 20 μm or less, and more preferably 1.0 μm or less, in terms of surface smoothness and the like.
It is not less than μm and not more than 10 μm.
【0008】本発明で用いる粒子(2)としては、特に
制限はないがシリカや、シリコーン樹脂粒子、アクリル
樹脂粒子、スチレン樹脂粒子、ナイロン樹脂粒子等が挙
げられ、粒子の形状は、効率的に光を拡散させるため
に、球状もしくは球状に近いものが好ましい。問題とな
る光の反射は、おおかた空気と粒子との界面、粒子とハ
ードコート樹脂との界面で発生する。前者の反射は空気
と粒子の屈折率の差によって、後者の反射は粒子とハー
ドコート樹脂との屈折率の差によって発生する。粒子の
屈折率が大きすぎると、透過性が著しく損なわれ、画質
も劣化する。ハードコート樹脂と粒子の屈折率差が小さ
いと粒子とハードコート樹脂との界面での拡散反射が利
用できず、ヘイズの割に防眩性が得られない。屈折率の
差が大きすぎると、透過性が低下する。よって粒子の屈
折率、ハードコート樹脂の屈折率を適当に選択すること
で透過性と防眩性を効果的に発揮させることができる。The particles (2) used in the present invention include, but are not particularly limited to, silica, silicone resin particles, acrylic resin particles, styrene resin particles, nylon resin particles, and the like. In order to diffuse light, a sphere or a sphere is preferred. The reflection of light, which is a problem, mostly occurs at the interface between the air and the particles and at the interface between the particles and the hard coat resin. The former reflection is caused by a difference in refractive index between air and particles, and the latter reflection is caused by a difference in refractive index between particles and a hard coat resin. If the refractive index of the particles is too large, the transparency is significantly impaired, and the image quality is also deteriorated. If the difference in refractive index between the hard coat resin and the particles is small, diffuse reflection at the interface between the particles and the hard coat resin cannot be used, and antiglare properties cannot be obtained for the haze. If the difference between the refractive indices is too large, the transmittance will decrease. Therefore, by appropriately selecting the refractive index of the particles and the refractive index of the hard coat resin, the transparency and the antiglare property can be effectively exhibited.
【0009】本発明において粒子(2)等を含有するハ
ードコート層(5)の厚みとしては、この粒子(2)の
粒径以下で、望ましくは粒子(2)の平均粒径の80%
以下である。粒子(2)の粒度分布、ハードコート樹脂
(4)との屈折率差にもよるが該平均粒径の80%より
ハードコート層(5)が厚いと、大部分の粒子(2)が
ハードコート層(5)に埋まってしまい十分な防眩性が
得られない。さらに粒子の欠落を防止するためには、粒
子の平均粒径の50%以上であることが望ましい。かか
る条件が満たされて、本発明の低ヘイズで干渉の発生を
防止し、防眩効果、耐スクラッチ性、透明性に優れかつ
画質劣化を抑えた防眩性(ディスプレイ用)フィルムが
得られる。しかし前記の条件を満たした時に、ハードコ
ート層(5)の硬度が不足気味に成る場合があり、ハー
ドコート層(5)の下すなわち透明基材フィルム(1)
の上に他のハードコート層(6)を形成し、このハード
コート層(6)上にハードコート層(5)を設けること
で、硬度が不足気味に成る場合を解決することができ
る。ハードコート層(6)は、ハードコート層(5)と
同一のものでもよいが、前記の主旨からして粒子
(2)、微粒子(3)を含まないものでもよく、ハード
コート層(5)に用いた樹脂(4)とは別のハードコー
ト樹脂(8)からのものでもよい。このハードコート層
(6)の厚さは特に制限されるものではないが、1.0
μm以上10μm以下が好ましい。In the present invention, the thickness of the hard coat layer (5) containing the particles (2) and the like is not more than the particle diameter of the particles (2), preferably 80% of the average particle diameter of the particles (2).
It is as follows. If the hard coat layer (5) is thicker than 80% of the average particle diameter, most of the particles (2) will be hard depending on the particle size distribution of the particles (2) and the refractive index difference from the hard coat resin (4). It is buried in the coat layer (5), and sufficient antiglare property cannot be obtained. Further, in order to prevent the loss of the particles, the average particle diameter is desirably 50% or more. When such conditions are satisfied, the anti-glare (for display) film of the present invention, which is low in haze, prevents interference, has excellent anti-glare effect, scratch resistance, transparency and suppresses image quality deterioration, can be obtained. However, when the above conditions are satisfied, the hardness of the hard coat layer (5) may become insufficient, and the hardness of the hard coat layer (5) may be lower than that of the hard coat layer (5), that is, the transparent substrate film (1).
By forming another hard coat layer (6) on the hard coat layer (6) and providing the hard coat layer (5) on the hard coat layer (6), it is possible to solve the case where the hardness becomes insufficient. The hard coat layer (6) may be the same as the hard coat layer (5), but may not contain the particles (2) and the fine particles (3) in view of the above-mentioned purpose. The hard coat resin (8) may be different from the resin (4) used for the above. The thickness of the hard coat layer (6) is not particularly limited.
It is preferably from 10 μm to 10 μm.
【0010】本発明に干渉を防止するために用いる微粒
子(3)としては、平均粒径1〜500nmのものが用
いられるが、特好ましくは平均粒径5〜200nmの微
粒子が好適に用いられる。平均粒径が500nmを越え
ると透過性を損なう傾向があり、1nmに満たない場合
は干渉を防止する効果が極めて小さくなる。As the fine particles (3) used for preventing interference in the present invention, fine particles having an average particle size of 1 to 500 nm are used, and fine particles having an average particle size of 5 to 200 nm are particularly preferably used. If the average particle size exceeds 500 nm, the transmittance tends to be impaired. If the average particle size is less than 1 nm, the effect of preventing interference becomes extremely small.
【0011】微粒子(3)としては、コロイド状に分散
した無機酸化物微粒子が好ましく、無機酸化物微粒子と
しては、酸化珪素、酸化アンチモン、酸化錫、酸化イン
ジウム、酸化亜鉛、アルミナ、チタニア、ジルコニア等
が挙げられ、なかでも、価格や色目を考えると酸化珪
素、例えばコロイダルシリカ等が好ましい。これらの微
粒子(3)として、表面をアクリロキシ官能性シラン等
で処理し電離放射線で架橋するようにアクリレート化変
性したものをハードコート樹脂に混合するほうが更に好
ましい。該表面アクリレート化した無機酸化物微粒子
は、ハードコート樹脂との架橋に参加するため、多量に
配合しても硬度の低下はなく、逆に硬度は向上する傾向
にある。またハードコート樹脂への分散工程も必要なく
混合が容易であり、混合後の透過性においても優れてい
る。アクリレート化の表面処理をした無機酸化物微粒子
とアクリレート化の表面処理をしていない微粒子とを併
用しても良いThe fine particles (3) are preferably colloidally dispersed inorganic oxide fine particles. Examples of the inorganic oxide fine particles include silicon oxide, antimony oxide, tin oxide, indium oxide, zinc oxide, alumina, titania, zirconia and the like. Among them, silicon oxide, for example, colloidal silica is preferable in consideration of price and color. As these fine particles (3), it is more preferable to mix a hard coat resin with fine particles (3) which have been treated with acryloxy-functional silane or the like and modified with acrylate so as to be crosslinked by ionizing radiation. Since the surface acrylated inorganic oxide fine particles participate in the crosslinking with the hard coat resin, even if they are blended in a large amount, the hardness does not decrease and the hardness tends to increase. In addition, mixing is easy without the need for a step of dispersing in a hard coat resin, and excellent in permeability after mixing. Acrylate-treated inorganic oxide fine particles may be used in combination with acrylate-free surface-treated fine particles.
【0012】本発明は、前記したように粒子(2)と微
粒子(3)とをハードコート層(5)に含有せしめるこ
とで、透過性を犠牲にし粒子の密度を上げ干渉の発生を
抑えている(このためヘイズは上昇し画面が非常に見ず
らいものになっていた)従来の技術の問題を解決し、干
渉の発生を抑えかつヘイズが30%以下の防眩性フィル
ムが得られるものである。本発明においては、干渉の発
生を十分に抑えてかつヘイズが20%以下、更には10
%以下の防眩性フィルムが得られる。According to the present invention, as described above, the particles (2) and the fine particles (3) are contained in the hard coat layer (5), so that the density of the particles is increased and the occurrence of interference is suppressed while sacrificing the transparency. Solves the problems of the prior art, which suppresses the occurrence of interference and provides an antiglare film having a haze of 30% or less. It is. In the present invention, the occurrence of interference is sufficiently suppressed and the haze is 20% or less,
% Or less of an antiglare film.
【0013】防眩性を付与する粒子(2)の添加量は、
使用する粒子(2)の比重により影響をうけるが、通
常、樹脂(4)固形分の0.05〜30重量%、好まし
くは0.2〜5重量%の範囲である。干渉を防止する微
粒子(3)の添加量は樹脂(4)固形分の0.001〜
80重量%、好ましくは0.2〜40重量%の範囲であ
る。ハードコート層(5)の上に、さらに低屈折率の反
射防止層(9)を形成する場合にはハードコート層の屈
折率が高いほうが反射防止効果が高まるので、酸化アン
チモン、酸化錫、ジルコニア等のハードコート樹脂
(4)よりも屈折率の高い微粒子を用いるとハードコー
ト層(5)の屈折率が高くなり反射防止の効果が高ま
る。The amount of the particles (2) imparting antiglare properties is
Although it is affected by the specific gravity of the particles (2) used, it is usually in the range of 0.05 to 30% by weight, preferably 0.2 to 5% by weight of the solid content of the resin (4). The added amount of the fine particles (3) for preventing interference is 0.001 to 0.001 of the solid content of the resin (4).
80% by weight, preferably in the range of 0.2-40% by weight. When an antireflection layer (9) having a lower refractive index is further formed on the hard coat layer (5), the higher the refractive index of the hard coat layer is, the higher the antireflection effect is. Therefore, antimony oxide, tin oxide, zirconia If fine particles having a refractive index higher than that of the hard coat resin (4) are used, the refractive index of the hard coat layer (5) is increased and the effect of preventing reflection is enhanced.
【0014】本発明に用いるハードコート層(5)を形
成するハードコート樹脂(4)としては、主として熱硬
化型樹脂、若しくは電離放射線硬化型樹脂が考えられる
が、中でも作業環境性、生産性の点で電離放射線硬化型
樹脂を使用することが好ましい。電離放射線硬化型樹脂
は、少なくとも電子線あるいは紫外線照射により硬化さ
れる樹脂を含有する塗料から形成される。具体的には、
光重合性プレポリマー、光重合性モノマー、光重合開始
剤を含有し、さらに必要に応じて増感剤、非反応性樹
脂、レベリング剤等の添加剤、溶剤を含有するものであ
る。光重合性プレポリマーは、その構造、分子量が、電
離放射線型硬化型塗料の硬化に関係し、硬度、耐クラッ
ク性等の特性を定めるものである。光重合性ポリマーは
骨格中に導入されたアクリロイル基が電離放射線照射さ
れることにより、ラジカル重合するタイプが一般的であ
る。ラジカル重合により硬化するものは硬化速度が速
く、樹脂設計の自由度も大きいため、特に好ましい。光
重合性プレポリマーとしては、アクリロイル基を有する
アクリル系プレポリマーが、特に好ましく、1分子中に
2個以上のアクリロイル基を有し、3次元網目構造とな
るものである。アクリル系プレポリマーとしては、ウレ
タンアクリレート、メラミンアクリレート、ポリエステ
ルアクリレート等が使用できる。光重合性モノマーは、
高粘度の光重合性プレポリマーを希釈し、粘度を低下さ
せ、作業性を向上させるため、また、架橋剤として塗膜
強度を付与するために使用される。また、光重合性モノ
マーの混合量が多くなると塗膜は必要以上に硬くなるた
め、所望の硬度、あるいは所望の可とう性が得られるよ
う、混合割合は選択するとよい。またハードコート層
(6)も上記記載の中から前記した主旨を損なわない範
囲で適宜選択して使用することができる。As the hard coat resin (4) for forming the hard coat layer (5) used in the present invention, a thermosetting resin or an ionizing radiation curable resin can be mainly considered. In view of this, it is preferable to use an ionizing radiation-curable resin. The ionizing radiation-curable resin is formed from a paint containing at least a resin that is cured by irradiation with an electron beam or ultraviolet rays. In particular,
It contains a photopolymerizable prepolymer, a photopolymerizable monomer, and a photopolymerization initiator, and further contains, if necessary, additives such as a sensitizer, a non-reactive resin, and a leveling agent, and a solvent. The structure and molecular weight of the photopolymerizable prepolymer relate to the curing of the ionizing radiation-type curable coating material, and determine properties such as hardness and crack resistance. The photopolymerizable polymer generally undergoes radical polymerization when an acryloyl group introduced into the skeleton is irradiated with ionizing radiation. Those cured by radical polymerization are particularly preferred because they have a high curing rate and a high degree of freedom in resin design. As the photopolymerizable prepolymer, an acrylic prepolymer having an acryloyl group is particularly preferable, and an acrylic prepolymer having two or more acryloyl groups in one molecule and having a three-dimensional network structure is preferable. As the acrylic prepolymer, urethane acrylate, melamine acrylate, polyester acrylate, and the like can be used. The photopolymerizable monomer is
It is used for diluting a high-viscosity photopolymerizable prepolymer, lowering the viscosity and improving workability, and as a crosslinking agent for imparting coating strength. Further, the coating film becomes harder than necessary when the mixing amount of the photopolymerizable monomer increases, so that the mixing ratio is preferably selected so as to obtain a desired hardness or a desired flexibility. Also, the hard coat layer (6) can be appropriately selected from the above description and used within a range that does not impair the above-mentioned purpose.
【0015】例えば、本発明の防眩性フィルムを曲げる
用途に使用する場合は、可とう性に優れた、熱硬化性、
熱可塑性アクリル樹脂、エポキシ樹脂等の非反応性樹脂
を混合することにより、硬度を調節することが出来る。
尚、本発明で云うハードコート層とは鉛筆硬度がH以上
のものである。電離放射線塗料を用いた、ハードコート
層の形成方法としては、通常の塗工方法、例えば、バ
ー、ブレード、スピン、グラビア、スプレー等のコーテ
ィングで行うことができる。For example, when used for bending the anti-glare film of the present invention, the film has excellent flexibility, thermosetting properties,
The hardness can be adjusted by mixing a non-reactive resin such as a thermoplastic acrylic resin or an epoxy resin.
Incidentally, the hard coat layer referred to in the present invention has a pencil hardness of H or more. As a method for forming the hard coat layer using the ionizing radiation paint, a usual coating method, for example, bar, blade, spin, gravure, spray or the like can be used.
【0016】[0016]
【実施例】以下、実施例により本発明を更に詳しく説明
する **実施例1 厚さ188μmのポリエステルフィルム上にDPHA
(6官能アクリレートモノマー)50部、2官能ウレタ
ンアクリレート41部、光開始剤3部、平均粒径5μm
のシリカ粒子3部、平均粒径10nmのコロイダルシリ
カ微粒子3部(30重量%分散体10部)、トルエン1
00部からなる塗料をハードコート樹脂バインダー部分
の硬化後の厚みが3.5μmとなるようにメイヤーバー
にて塗布し、溶剤乾燥後、高圧水銀灯にて紫外線を30
0mJ/cm2照射し硬化させた。EXAMPLES The present invention will be described in more detail with reference to the following examples. ** Example 1 DPHA on a 188 μm-thick polyester film.
(Hexafunctional acrylate monomer) 50 parts, bifunctional urethane acrylate 41 parts, photoinitiator 3 parts, average particle size 5 μm
3 parts of silica particles, 3 parts of colloidal silica fine particles having an average particle diameter of 10 nm (10 parts of a 30% by weight dispersion), and 1 part of toluene
00 parts of the coating material was applied with a Mayer bar so that the hardened resin binder portion had a cured thickness of 3.5 μm, dried with a solvent, and irradiated with ultraviolet rays with a high-pressure mercury lamp for 30 minutes.
It was irradiated with 0 mJ / cm2 and cured.
【0017】**比較例1 厚さ188μmのポリエステルフィルム上にDPHA
(6官能アクリレートモノマー)50部、2官能ウレタ
ンアクリレート41部、光開始剤3部、平均粒径5μm
のシリカ粒子3部、トルエン100部からなる塗料をハ
ードコート樹脂バインダー部分の硬化後の厚みが3.5
μmとなるようにメイヤーバーにて塗布し、溶剤乾燥
後、高圧水銀灯にて紫外線を300mJ/cm2照射し
硬化させた** Comparative Example 1 DPHA on a 188 μm thick polyester film
(Hexafunctional acrylate monomer) 50 parts, bifunctional urethane acrylate 41 parts, photoinitiator 3 parts, average particle size 5 μm
A hard coat resin binder portion having a cured thickness of 3.5 was prepared by coating a coating composed of 3 parts of silica particles and 100 parts of toluene.
It was applied with a Mayer bar so as to have a thickness of μm, and after drying the solvent, it was cured by irradiating 300 mJ / cm 2 of ultraviolet rays with a high-pressure mercury lamp.
【0018】**比較例2 厚さ188μmのポリエステルフィルム上にDPHA
(6官能アクリレートモノマー)50部、2官能ウレタ
ンアクリレート41部、光開始剤3部、平均粒径5μm
のシリカ粒子12部、トルエン100部からなる塗料を
ハードコート樹脂バインダー部分の硬化後の厚みが3.
5μmとなるようにメイヤーバーにて塗布し、溶剤乾燥
後、高圧水銀灯にて紫外線を300mJ/cm2照射し
硬化させた** Comparative Example 2 DPHA on a 188 μm thick polyester film
(Hexafunctional acrylate monomer) 50 parts, bifunctional urethane acrylate 41 parts, photoinitiator 3 parts, average particle size 5 μm
The hard coat resin binder portion of the coating composition comprising 12 parts of silica particles and 100 parts of toluene has a thickness of 3.
It was applied with a Mayer bar so as to have a thickness of 5 μm, and after drying the solvent, it was cured by irradiating 300 mJ / cm 2 of ultraviolet rays with a high pressure mercury lamp.
【0019】実施例1及び比較例1、2で得られた防眩
性ディスプレイ用フィルムについて以下の評価をおこな
った。その結果を下記する。 (1)透過率 島津製作所製、分光光度計UV−310
0PCを用い550nmの透過率を測定した。 (2)ヘイズ 日本電色工業製、ヘイズメーターを用い
て測定した。 (3)干渉 RGB360μmピッチのTFT液晶カラ
ーディスプレイ上にフィルムを貼り付け目視にて干渉程
度を評価した。 A:干渉無し B:干渉強い (4)画像の鮮明さ 透過型液晶ディスプレイ上にフ
ィルムを貼り付け目視にて画像の鮮明さを判定した。 A:非常に鮮明 B:鮮明さに欠けるThe antiglare display films obtained in Example 1 and Comparative Examples 1 and 2 were evaluated as follows. The results are described below. (1) Transmittance Spectrophotometer UV-310, manufactured by Shimadzu Corporation
The transmittance at 550 nm was measured using 0PC. (2) Haze The haze was measured using a haze meter manufactured by Nippon Denshoku Industries. (3) Interference A film was pasted on a TFT liquid crystal color display having a pitch of 360 μm for RGB, and the degree of interference was visually evaluated. A: No interference B: Strong interference (4) Image sharpness A film was stuck on a transmissive liquid crystal display, and the image sharpness was visually judged. A: Very sharp B: Lack of sharpness
【0020】 {評価結果} 透過率(%) ヘイズ(%) 干渉 画像の鮮明さ 実施例1 85% 5.0% A A 比較例1 85% 4.8% B A 比較例2 45% 40.0% A B<< Evaluation Results >> Transmittance (%) Haze (%) Interference Clarity of Image Example 1 85% 5.0% A A Comparative Example 1 85% 4.8% B A Comparative Example 2 45% 40. 0% AB
【0021】[0021]
【発明の効果】本発明の基材フィルム上に少なくとも電
離放射線硬化型樹脂と干渉防止のため平均粒径1〜50
0nmの微粒子と防眩性付与のため平均粒径0.6〜2
0μmの粒子とを含む塗液をコーティングしてハードコ
ート層を形成した防眩性フイルムは、カラーディスプレ
イ上で干渉が少なく、防眩性に優れたディスプレイ用フ
ィルムとして有用である。The base film of the present invention has an average particle size of 1 to 50 for preventing interference with at least the ionizing radiation-curable resin.
0 nm fine particles and an average particle size of 0.6 to 2 for imparting antiglare properties
The antiglare film having a hard coat layer formed by coating a coating liquid containing particles having a particle size of 0 μm is useful as a display film having little interference on a color display and having excellent antiglare properties.
Claims (5)
0.6〜20μmの粒子(2)と平均粒径1〜500n
mの微粒子(3)とハードコート樹脂(4)とを主成分
とするハードコート層(5)を、形成したことを特徴と
する防眩性フィルム。1. A transparent base film (1) having particles (2) having an average particle size of 0.6 to 20 μm and an average particle size of 1 to 500 n
An anti-glare film comprising a hard coat layer (5) mainly composed of m fine particles (3) and a hard coat resin (4).
に対して0.05〜30重量%、前記微粒子(3)がハ
ードコート樹脂(4)に対して0.001〜80重量%
の含量である請求項1記載の防眩性フィルム。2. A method according to claim 1, wherein said particles (2) are hard coat resins (4).
0.05 to 30% by weight, and the fine particles (3) are 0.001 to 80% by weight based on the hard coat resin (4).
The anti-glare film according to claim 1, wherein the content is
防眩性フィルム。3. The antiglare film according to claim 1, wherein the haze is 30% or less.
る請求項1記載の防眩性フィルム。4. The antiglare film according to claim 1, wherein said fine particles (3) are colloidal silica.
(5)との間に他のハードコート層(6)を設けた請求
項1記載の防眩性フィルム。5. The anti-glare film according to claim 1, wherein another hard coat layer (6) is provided between the transparent substrate film (1) and the hard coat layer (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10106915A JPH11286083A (en) | 1998-04-02 | 1998-04-02 | Glare-proof film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10106915A JPH11286083A (en) | 1998-04-02 | 1998-04-02 | Glare-proof film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11286083A true JPH11286083A (en) | 1999-10-19 |
Family
ID=14445734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10106915A Pending JPH11286083A (en) | 1998-04-02 | 1998-04-02 | Glare-proof film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11286083A (en) |
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