JP2015000822A - Cover glass with scattering prevention film, and production method of the glass - Google Patents

Cover glass with scattering prevention film, and production method of the glass Download PDF

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JP2015000822A
JP2015000822A JP2013124622A JP2013124622A JP2015000822A JP 2015000822 A JP2015000822 A JP 2015000822A JP 2013124622 A JP2013124622 A JP 2013124622A JP 2013124622 A JP2013124622 A JP 2013124622A JP 2015000822 A JP2015000822 A JP 2015000822A
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cover glass
scattering
film
glass
scattering prevention
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鈴木 克巳
Katsumi Suzuki
克巳 鈴木
井上 政広
Masahiro Inoue
政広 井上
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AGC Inc
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Asahi Glass Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide cover glass with a scattering prevention film, from the end face of which glass pieces are restrained effectively from being scattered when the cover glass is broken.SOLUTION: The cover glass 1 with the scattering prevention film has the cover glass 2 for displays, and the scattering prevention film 3 formed on the end face of the cover glass 2. A production method of the cover glass 1 comprises the steps of: forming a coating film of a resin composition, and the coating film becomes the scattering prevention film on the end face of the cover glass 2; and curing the formed coating film to form the scattering prevention film. The scattering prevention film may be formed on the front surface of the cover glass 2.

Description

本発明は飛散防止膜付きカバーガラス及びその製造方法に係り、特に、端面に飛散防止膜が形成されたディスプレイ用のカバーガラス及びその製造方法に関する。   The present invention relates to a cover glass with an anti-scattering film and a method for manufacturing the same, and more particularly to a cover glass for a display having an anti-scattering film formed on an end face and a method for manufacturing the same.

近年、ディスプレイ用のカバーガラスは、様々な電子機器に使用され、その使用量は拡大の一途である。このようなカバーガラスとしては、例えば、フラットパネルディスプレイ(FPD)や、携帯機器等のディスプレイに使用されるものが挙げられ、特に、携帯機器への使用量が急速に増大している。   In recent years, cover glasses for displays have been used in various electronic devices, and the amount of use has been increasing. As such a cover glass, what is used for displays, such as a flat panel display (FPD) and a portable apparatus, is mentioned, for example, Especially the usage-amount to a portable apparatus is increasing rapidly.

ところで、このようなカバーガラスは、一般に、その適用する筐体に保持されて構成されるが、その表面はディスプレイ用途のため筐体で覆われることなく、露出して配置される。したがって、カバーガラスに外部から強い衝撃が加えられた場合には、破損し、その際に生じるガラス片が周囲へ飛散するおそれがある。   By the way, such a cover glass is generally configured to be held by a case to which the cover glass is applied, but its surface is exposed and arranged without being covered by the case for display use. Therefore, when a strong impact is applied to the cover glass from the outside, the cover glass may be broken, and the glass pieces generated at that time may be scattered around.

このようなガラス片の飛散に対し、類似したガラス製品(板ガラス、鏡等)の飛散を防止するものとして、ガラス表面に塗膜を形成して耐衝撃性を向上させると共に、破損した場合にはその破片が飛散しないようにする飛散防止用塗料が知られている(例えば、特許文献1〜2参照)。   In order to prevent the scattering of similar glass products (plate glass, mirrors, etc.) against such scattering of glass pieces, a coating film is formed on the glass surface to improve impact resistance, and when broken There are known anti-scattering paints that prevent the fragments from scattering (see, for example, Patent Documents 1 and 2).

また、ディスプレイ用のカバーガラスにおいては、反射防止、紫外線吸収、色調補正等の各機能を付与することが多く、そのような特性を付加させるために、カバーガラス表面にフィルム状のフィルタを設けることが広く行われている(例えば、特許文献3〜4参照)。ディスプレイ用のカバーガラスにおいては、特別に飛散防止膜を形成しない場合が多いが、上記のような特性を付加するフィルタを設けることが通常行われ、それが破損時のガラス片の飛散防止効果を実質的に発揮している。   In addition, display cover glass often provides functions such as antireflection, ultraviolet absorption, and color correction, and a film-like filter is provided on the cover glass surface to add such characteristics. Is widely performed (see, for example, Patent Documents 3 to 4). In many cases, a cover glass for a display does not have a special anti-scattering film, but it is usually provided with a filter that adds the above-mentioned characteristics. It has been demonstrated substantially.

特開平09−157581号公報JP 09-157581 A 特開2000−126012号公報Japanese Patent Laid-Open No. 2000-12612 特開平07−168005号公報Japanese Patent Application Laid-Open No. 07-168005 特開2003−16950号公報JP 2003-16950 A

このように、従来、ディスプレイ用のカバーガラスは、その表面に樹脂フィルムが設けられることが多く、また、その端面が筐体により覆われて固定されているため、仮にカバーガラスが破損した場合でも、ガラス片が飛散することがそれほど問題となっていなかった。   Thus, conventionally, a cover glass for a display is often provided with a resin film on its surface, and since its end surface is covered and fixed by a housing, even if the cover glass is damaged The scattering of the glass pieces was not a problem.

しかしながら、最近では、電子機器の薄型化やデザイン性を考慮することにより、カバーガラスの端面の一部を筐体で固定し、残りの端面の一部を外部へ露出させるような構成の製品が市販されるようになってきた。このようにカバーガラスの端面が露出した製品においては、カバーガラスが破損してしまった場合、表面に設けられている樹脂フィルム等ではその端面からのガラス片の飛散を十分に抑えられず、周囲に飛散してしまうことを本発明者らは発見した。また、樹脂フィルムでは、その薄膜化、軽量化にも限界があり、電子機器のさらなる薄型化、軽量化において、より適したカバーガラスも求められている。   However, recently, considering the reduction in thickness and design of electronic devices, there is a product with a structure in which a part of the end face of the cover glass is fixed with a housing and a part of the remaining end face is exposed to the outside. It has come to be marketed. In the case where the end face of the cover glass is exposed in this way, if the cover glass breaks, the resin film provided on the surface cannot sufficiently suppress the scattering of the glass pieces from the end face, and the surrounding area. The present inventors have found that they are scattered. In addition, the resin film is limited in its thinning and weight reduction, and a more suitable cover glass is required for further thinning and weight reduction of electronic devices.

そこで、本発明は、カバーガラスが破損した際において、その端面からガラス片が飛散することを効果的に抑制し、さらに、フィルムを貼着する場合よりも薄膜化、軽量化を可能とするカバーガラスの提供を目的とする。   Therefore, the present invention effectively suppresses the scattering of glass pieces from the end face when the cover glass is broken, and further enables a thinner and lighter cover than when a film is attached. The purpose is to provide glass.

本発明の飛散防止膜付きカバーガラスは、ディスプレイ用のカバーガラスと、前記カバーガラスの端面に形成された飛散防止膜と、を有することを特徴とする。   The cover glass with a scattering prevention film of the present invention has a cover glass for display and a scattering prevention film formed on an end surface of the cover glass.

また、本発明の飛散防止膜付きカバーガラスの製造方法は、ディスプレイ用のカバーガラスの端面に、飛散防止膜となる樹脂組成物の塗膜を形成する工程と、前記塗膜を硬化させて飛散防止膜とする工程と、を有することを特徴とする   In addition, the method for producing a cover glass with a scattering prevention film of the present invention includes a step of forming a coating film of a resin composition to be a scattering prevention film on an end face of a cover glass for a display, and the coating film is cured and scattered. And a step of forming a prevention film.

本発明の飛散防止膜付きカバーガラス及びその製造方法によれば、カバーガラスの端面に飛散防止膜が設けられており、カバーガラスが破損した場合においても、端面からのガラス片の飛散を防止できる。   According to the cover glass with an anti-scattering film of the present invention and the manufacturing method thereof, the anti-scattering film is provided on the end surface of the cover glass, and even when the cover glass is broken, scattering of the glass pieces from the end surface can be prevented. .

本発明の一実施形態である飛散防止膜付きカバーガラスの概略構成を示す断面図である。It is sectional drawing which shows schematic structure of the cover glass with a scattering prevention film | membrane which is one Embodiment of this invention. 本発明の他の実施形態である飛散防止膜付きカバーガラスの概略構成を示す断面図である。It is sectional drawing which shows schematic structure of the cover glass with a scattering prevention film which is other embodiment of this invention.

本発明の飛散防止膜付きカバーガラスについて、以下、図面を参照しながら説明する。なお、図1は、本発明の一実施形態である飛散防止膜付きカバーガラスの概略構成を示す断面図であり、この飛散防止膜付きカバーガラス1は、カバーガラス2と、その端面に形成された飛散防止膜3で構成される。   The cover glass with a scattering prevention film of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a schematic configuration of a cover glass with a scattering prevention film according to an embodiment of the present invention. The cover glass 1 with a scattering prevention film is formed on a cover glass 2 and its end face. The anti-scattering film 3 is used.

ここで用いられるカバーガラス2は、ディスプレイ用のカバーガラスであれば特に限定されるものではなく、例えば、電子機器等の筐体と組み合わせて使用されるカバーガラスに使用されるカバーガラス、より具体的には、携帯電話、スマートフォン、タブレット、パソコン等のディスプレイ、液晶テレビ、プラズマテレビ、有機ELテレビなどのフラットパネルディスプレイ(FPD)用のガラス基板、等が挙げられる。なお、用いるガラスは特に限定されず、強化していないガラス、化学強化ガラス、風冷強化ガラス、等があげられる。   The cover glass 2 used here is not particularly limited as long as it is a cover glass for a display. For example, a cover glass used for a cover glass used in combination with a housing of an electronic device or the like, more specifically, Specifically, a display such as a mobile phone, a smartphone, a tablet, and a personal computer, a glass substrate for a flat panel display (FPD) such as a liquid crystal television, a plasma television, and an organic EL television can be used. The glass to be used is not particularly limited, and examples thereof include unstrengthened glass, chemically tempered glass, and air-cooled tempered glass.

本発明に用いられる飛散防止膜3は、カバーガラス2の端面に設けられた膜である。ここで、飛散防止膜3は、飛散防止膜を形成可能な公知の材料を使用でき、特に限定されるものではない。この飛散防止膜を形成する材料としては、例えば、ポリエチレン、ポリ塩化ビニル、ポリウレタン、ウレタンアクリレート、シリコーン、シリコーンゴム、アクリル等の樹脂が挙げられる。   The scattering prevention film 3 used in the present invention is a film provided on the end face of the cover glass 2. Here, the scattering prevention film 3 can use a known material capable of forming a scattering prevention film, and is not particularly limited. Examples of the material for forming the scattering prevention film include resins such as polyethylene, polyvinyl chloride, polyurethane, urethane acrylate, silicone, silicone rubber, and acrylic.

なお、この飛散防止膜3はカバーガラス2の端面に形成することを必須の構成とするが、カバーガラス2の表面にも設けてもよい。このとき、カバーガラス2の表、裏の両表面に設けてもよいし、いずれか一方の面に設けてもよい。ただし、カバーガラスとして電子機器等のディスプレイとして適用する場合には、電子機器内側(裏面)には、各種電子部品等を形成したりする等により通常樹脂等で覆われるため、ある程度の飛散防止効果が得られている。したがって、最低限、飛散防止膜を端面に設けておけば、カバーガラス全体の飛散防止効果を得ることができ、さらに念を入れて、カバーガラス表面における飛散防止を抑制するために、カバーガラス2の電子機器外側(表面)に設けてもよい。表面にも飛散防止膜を形成する一例を図2に示したが、ここでは、カバーガラス2の端面に飛散防止膜3が、その表面に飛散防止膜12が形成されている。   The scattering prevention film 3 is essential to be formed on the end surface of the cover glass 2, but may be provided on the surface of the cover glass 2. At this time, it may be provided on both the front and back surfaces of the cover glass 2 or may be provided on either one of the surfaces. However, when applied as a cover glass as a display for electronic devices, the inner side (back surface) of the electronic device is usually covered with resin, etc. by forming various electronic parts, etc. Is obtained. Therefore, if the anti-scattering film is provided on the end face as a minimum, the anti-scattering effect of the entire cover glass can be obtained. You may provide in the electronic device outside (surface). An example of forming the anti-scattering film on the surface is shown in FIG. 2, but here, the anti-scattering film 3 is formed on the end face of the cover glass 2, and the anti-scattering film 12 is formed on the surface.

なお、図2のように表面にまで飛散防止膜を形成する場合には、飛散防止膜3と飛散防止膜12とを同じ材料で形成すると一度の操作で被膜を形成できるため、製造の手間やコストが軽減でき好ましい。   In the case of forming the anti-scattering film up to the surface as shown in FIG. 2, the film can be formed by one operation if the anti-scattering film 3 and the anti-scattering film 12 are formed of the same material. Cost can be reduced, which is preferable.

一方で、飛散防止膜3と飛散防止膜12とを、適用する場所によって特性を選択して異なる材料で形成することもできる。例えば、カバーガラス2の端面に設ける飛散防止膜3としては、特に限定されるものではなく、様々な飛散防止膜を適用できる。例えば、カバーガラス2のガラス質を生かす場合には透明の飛散防止膜を使用するのが好ましく、筐体の色に合わせて又はコントラストを付けるように色味を調整する場合には、顔料又は染料等を含有させて、所望の色合いを有する飛散防止膜を使用するのが好ましく、端面からの外部光の透過や電子機器内部からの光の透過及び反射を抑制する場合には、光吸収効果を有する黒色系の飛散防止膜を使用するのが好ましい、というように、その目的に応じて適宜選択すればよい。   On the other hand, the anti-scattering film 3 and the anti-scattering film 12 can be formed of different materials by selecting the characteristics depending on the place to be applied. For example, the scattering prevention film 3 provided on the end surface of the cover glass 2 is not particularly limited, and various scattering prevention films can be applied. For example, it is preferable to use a transparent anti-scattering film when taking advantage of the vitreous properties of the cover glass 2, and when adjusting the color to match the color of the housing or to provide contrast, a pigment or dye It is preferable to use an anti-scattering film having a desired color, and in the case of suppressing the transmission of external light from the end face and the transmission and reflection of light from the inside of the electronic device, the light absorption effect is It is preferable to select appropriately according to the purpose, such as the use of a black-based anti-scattering film.

また、上記図2のように、カバーガラス2の表面に飛散防止膜12を設ける場合には、ディスプレイ機能を損なわないように、この表面部分には透明な飛散防止膜を適用する。なお、ディスプレイ機能を損なわなければ、表面の外周部分においては透明ではない飛散防止膜を使用してもよく、その場合には上記端面と同様に使用される材料は特に限定されない。ここで、本明細書において透明とは、可視光の透過率が25%以上であることをいう。   As shown in FIG. 2, when the anti-scattering film 12 is provided on the surface of the cover glass 2, a transparent anti-scattering film is applied to the surface portion so as not to impair the display function. If the display function is not impaired, a non-transparent anti-scattering film may be used in the outer peripheral portion of the surface, and in that case, the material used in the same manner as the end face is not particularly limited. Here, the term “transparent” in this specification means that the visible light transmittance is 25% or more.

また、端面に形成される飛散防止膜3の厚さは、0.1μm以上とすることが好ましい。0.1μm以上とすれば、飛散防止効果が十分に発揮できる。   Further, the thickness of the anti-scattering film 3 formed on the end face is preferably 0.1 μm or more. When the thickness is 0.1 μm or more, the scattering prevention effect can be sufficiently exerted.

また、表面に飛散防止膜12を設ける場合、その形成される飛散防止膜12の厚さは、0.1〜500μmとすることが好ましい。500μm以下とすれば、カバーガラスに反りが生じる可能性がなく、0.1μm以上とすれば、飛散防止効果が十分に発揮できる。   Moreover, when providing the scattering prevention film | membrane 12 on the surface, it is preferable that the thickness of the scattering prevention film | membrane 12 formed is 0.1-500 micrometers. If it is 500 μm or less, there is no possibility of warping of the cover glass, and if it is 0.1 μm or more, the effect of preventing scattering can be sufficiently exhibited.

以上のように、カバーガラスの端面に飛散防止膜を形成することで、カバーガラスが破損等した際に、端面からのガラス片の飛散を効果的に防止できる。さらに、カバーガラスの表面にも飛散防止膜を形成することで、カバーガラスの表面からのガラス片の飛散をも効果的に防止できる。   As described above, by forming the anti-scattering film on the end surface of the cover glass, it is possible to effectively prevent the glass pieces from scattering from the end surface when the cover glass is damaged. Furthermore, by forming a scattering prevention film on the surface of the cover glass, it is possible to effectively prevent scattering of glass pieces from the surface of the cover glass.

次に、飛散防止膜付きカバーガラスの製造方法について説明する。
本発明における飛散防止膜を形成する方法としては、公知の被膜形成と同様の操作により行うことができる。例えば、カバーガラス2の端面に、飛散防止膜となる樹脂溶液を接触し、乾燥させて、樹脂組成物の塗膜を形成し、得られた塗膜を硬化させることで飛散防止膜を形成できる。
Next, the manufacturing method of the cover glass with a scattering prevention film is demonstrated.
The method for forming the anti-scattering film in the present invention can be carried out by the same operation as that for forming a known film. For example, a resin solution that becomes a scattering prevention film is brought into contact with the end face of the cover glass 2 and dried to form a coating film of the resin composition, and the resulting coating film is cured to form a scattering prevention film. .

このとき、樹脂溶液をカバーガラスの表面に接触させて塗布するには、ディップコート、スプレーコート、スポンジ、インキジェット、ディスペンサー、スピンコート、ダイコート、グラビアコートなど汎用コーティング方法、パッド印刷、スクリーン印刷、凸版印刷、凹版印刷、グラビア印刷、グラビアオフセット印刷など汎用印刷方法等による塗布等の公知の膜形成方法に使用される塗布方法により行えばよく、塗布方法には制限されない。これにより樹脂組成物の塗膜が形成される。   At this time, in order to apply the resin solution in contact with the surface of the cover glass, general-purpose coating methods such as dip coating, spray coating, sponge, ink jet, dispenser, spin coating, die coating, gravure coating, pad printing, screen printing, What is necessary is just to perform by the apply | coating method used for well-known film formation methods, such as application | coating by general purpose printing methods, such as letterpress printing, intaglio printing, gravure printing, and gravure offset printing, and it does not restrict | limit to an application method. Thereby, the coating film of a resin composition is formed.

次いで、形成された塗膜に対して、加熱やエアブロー等により溶媒を除去して硬化させると、均質な飛散防止膜が形成できる。ここで、加熱乾燥では50〜250℃に加熱することが好ましく、エアブローでは15〜30℃のエアーを吹き付ければよい。必要に応じて、紫外線、電子線を照射してもよい。   Next, when the formed coating film is cured by removing the solvent by heating, air blowing or the like, a homogeneous scattering prevention film can be formed. Here, in heat drying, it is preferable to heat to 50 to 250 ° C., and in air blow, air of 15 to 30 ° C. may be blown. You may irradiate with an ultraviolet-ray and an electron beam as needed.

以下、実施例(例1〜3)及び比較例(例4〜6)に基づいてさらに本発明を詳細に説明する。   Hereinafter, the present invention will be described in more detail based on Examples (Examples 1 to 3) and Comparative Examples (Examples 4 to 6).

〔例1〕
(飛散防止塗料の作成)
次の方法で飛散防止塗料の作成を行った。すなわち、表1の上欄に示す配合割合(質量基準)の配合物を80℃で3時間加熱溶融下、撹拌混合し均一なポリオールシステム液を得た。また、表1の下欄に示す配合割合の配合物を80℃で3時間加熱溶融下、撹拌混合し均一なイソシアネートシステム液を得た。このポリオールシステム液とイソシアネートシステム液とを100:90.41の比で混合し、飛散防止膜形成用の樹脂溶液を得た。
[Example 1]
(Create anti-scatter paint)
The anti-scattering paint was prepared by the following method. That is, a mixture having a blending ratio (mass basis) shown in the upper column of Table 1 was stirred and mixed at 80 ° C. for 3 hours while being melted by heating to obtain a uniform polyol system liquid. Moreover, the mixture of the mixture ratio shown in the lower column of Table 1 was stirred and mixed at 80 ° C. for 3 hours while heating and melting to obtain a uniform isocyanate system liquid. The polyol system liquid and the isocyanate system liquid were mixed at a ratio of 100: 90.41 to obtain a resin solution for forming an anti-scattering film.

Figure 2015000822
Figure 2015000822

ここで、飛散防止塗料の作製に使用した材料は次の通りである。
(1)水酸基価196.4のポリカプロラクトントリオール(株式会社ダイセル製、商品名:プラクセル308)
(2)水酸基価540.3のポリカプロラクトントリオール(株式会社ダイセル製、商品名:プラクセル303)
(3)水酸基価37.6のポリカプロラクトントリオール(株式会社ダイセル製、商品名:プラクセル230)
(4)シリコーン系伸展剤(ビックケミー・ジャパン株式会社製、商品名:BYK−300)
(5)ヌレート変性ヘキサメチレンイソシアネート(日本ポリウレタン工業株式会社製、商品名:コロネートHX)
(6)イソホロンジイソシアネート(旭オーリン株式会社製、商品名:イソホロンジイソシアネート)
(7)水添MDI(モーベイ社製、商品名:ディスモジュールW)
(8)ジブチル錫ジラウレート(純正化学株式会社製、商品名:ジブチル錫ジラウレート)
Here, the materials used for producing the anti-scattering paint are as follows.
(1) Polycaprolactone triol having a hydroxyl value of 196.4 (manufactured by Daicel Corporation, trade name: Plaxel 308)
(2) Polycaprolactone triol having a hydroxyl value of 540.3 (product name: Plaxel 303, manufactured by Daicel Corporation)
(3) Polycaprolactone triol having a hydroxyl value of 37.6 (manufactured by Daicel Corporation, trade name: Plaxel 230)
(4) Silicone-based extender (BIC Chemie Japan Co., Ltd., trade name: BYK-300)
(5) Nurate-modified hexamethylene isocyanate (manufactured by Nippon Polyurethane Industry Co., Ltd., trade name: Coronate HX)
(6) Isophorone diisocyanate (Asahi Olin Co., Ltd., trade name: isophorone diisocyanate)
(7) Hydrogenated MDI (product name: DISMODUL W, manufactured by Mobay)
(8) Dibutyltin dilaurate (made by Junsei Co., Ltd., trade name: dibutyltin dilaurate)

(印刷)
次いでこの樹脂溶液を用いて、スクリーン印刷法により、縦横が30×20cmで厚さが1.1mmの板ガラスの表面全面に、かつ、ディスペンサーを用い端面にそれぞれ厚さ6μmの飛散防止膜を形成し、飛散防止膜付きカバーガラスを得た。
(printing)
Next, using this resin solution, an anti-scattering film having a thickness of 6 μm is formed on the entire surface of the plate glass having a length and width of 30 × 20 cm and a thickness of 1.1 mm by screen printing and on the end surface using a dispenser. A cover glass with an anti-scattering film was obtained.

(評価;落球試験)
飛散防止性能を評価するため、落球試験を実施した。外寸40×30cm、開口部内寸32×22cm、高さ5cmのアルミ製フレーム上にこの処理で得たカバーガラスを塗膜面を上方に、かつ、4辺の各端をそれぞれ1.0cmの幅で支承するように、両面テープで水平に載置し、固定した。
該カバーガラス表面より上方50cmの高さから500gの鋼球を落下させることにより落球試験を行った。落下位置は、ガラス中心部とコーナー部で実施した。その結果、いずれの場合もガラスは破損したが破片の飛散はほとんどなかった。
(Evaluation: Falling ball test)
In order to evaluate the scattering prevention performance, a falling ball test was conducted. Cover glass obtained by this treatment on an aluminum frame having an outer dimension of 40 × 30 cm, an opening inner dimension of 32 × 22 cm, and a height of 5 cm, with the coating surface facing upward and each end of the four sides being 1.0 cm each It was placed horizontally and fixed with double-sided tape so that it was supported by the width.
A falling ball test was performed by dropping a steel ball of 500 g from a height of 50 cm above the surface of the cover glass. The drop position was carried out at the glass center and corner. As a result, in all cases, the glass was damaged, but there was almost no scattering of fragments.

〔例2〕
例1の樹脂溶液を用いて、スクリーン印刷法により、縦横が30×20cmで厚さが1.1mmの板ガラスの表面を額縁状(内側寸法24×14cm)に、かつ、ディスペンサーを用い端面に厚さ6μmの飛散防止膜を形成し、飛散防止膜付きカバーガラスを得た。
このカバーガラスについても、例1と同様の落球試験を実施した。その結果、ガラス中心部に落下させたときは破損したガラス片が飛散したが、コーナー部に落下させたときは、端面のガラスは破損したが端面からの破片の飛散はほとんどなかった。
[Example 2]
Using the resin solution of Example 1, the surface of a plate glass having a length and width of 30 × 20 cm and a thickness of 1.1 mm was formed into a frame shape (inner dimensions 24 × 14 cm) by a screen printing method, and the end surface was thickened using a dispenser. A 6 μm thick anti-scattering film was formed to obtain a cover glass with an anti-scattering film.
The same falling ball test as in Example 1 was performed on this cover glass. As a result, broken glass pieces were scattered when dropped on the glass center, but when dropped on the corner, the glass on the end face was broken, but there was almost no scattering of fragments from the end face.

〔例3〕
例1の樹脂溶液を用いて、ディスペンサーを用い、縦横が30×20cmで厚さが1.1mmの板ガラスの端面のみに厚さ6μmの飛散防止膜を形成し、飛散防止膜付きカバーガラスを得た。このカバーガラスについても、例1と同様の落球試験を実施した。
このカバーガラスについても、例1と同様の落球試験を実施した。その結果、ガラス中心部に落下させたときは破損したガラス片が飛散したが、コーナー部に落下させたときは、端面のガラスは破損したが端面からの破片の飛散はほとんどなかった。
[Example 3]
Using the resin solution of Example 1, using a dispenser, a scattering prevention film having a thickness of 6 μm is formed only on the end surface of a plate glass having a length and width of 30 × 20 cm and a thickness of 1.1 mm, thereby obtaining a cover glass with a scattering prevention film. It was. The same falling ball test as in Example 1 was performed on this cover glass.
The same falling ball test as in Example 1 was performed on this cover glass. As a result, broken glass pieces were scattered when dropped on the glass center, but when dropped on the corner, the glass on the end face was broken, but there was almost no scattering of fragments from the end face.

(例4)
樹脂溶液により皮膜を形成していない板ガラスを用意した。
この板ガラスについて、例1と同様の落球試験を実施した。その結果、いずれの場合も破損したガラス片は粉ごなになって飛び散った。
(Example 4)
A plate glass in which a film was not formed with a resin solution was prepared.
About this sheet glass, the falling ball test similar to Example 1 was implemented. As a result, in each case, the broken glass pieces were crushed and scattered.

(例5)
例1の樹脂溶液を用いて、スクリーン印刷法により、縦横が30×20cmで厚さが1.1mmの板ガラスの表面のみに厚さ6μmの飛散防止膜を形成し、カバーガラスを得た。
このカバーガラスについても、例1と同様の落球試験を実施した。その結果、ガラス中心部に落下させたときは、ガラスは破損したが破片の飛散はほとんどなかった。一方、コーナー部に落下させたときは、端面から破損したガラス片が飛散した。
(Example 5)
Using the resin solution of Example 1, a scattering prevention film having a thickness of 6 μm was formed only on the surface of a plate glass having a length and width of 30 × 20 cm and a thickness of 1.1 mm by screen printing to obtain a cover glass.
The same falling ball test as in Example 1 was performed on this cover glass. As a result, when dropped on the center of the glass, the glass was broken but there was almost no scattering of fragments. On the other hand, when dropped on the corner, broken glass pieces were scattered from the end face.

(例5)
飛散防止フィルム(日栄加工社製、商品名:NE−SPF)を板ガラスの表面に貼合して、飛散防止フィルム付きカバーガラスを得た。
このカバーガラスについても、例1と同様の落球試験を実施した。その結果、ガラス中心部に落下させたときは、ガラスは破損したが破片の飛散はほとんどなかった。一方、コーナー部に落下させたときは、端面から破損したガラス片が飛散した。
(Example 5)
An anti-scattering film (trade name: NE-SPF, manufactured by Niei Engineering Co., Ltd.) was bonded to the surface of the plate glass to obtain a cover glass with an anti-scattering film.
The same falling ball test as in Example 1 was performed on this cover glass. As a result, when dropped on the center of the glass, the glass was broken but there was almost no scattering of fragments. On the other hand, when dropped on the corner, broken glass pieces were scattered from the end face.

例1〜6のそれぞれの結果について、表2にまとめて示した。

Figure 2015000822
The results of Examples 1 to 6 are summarized in Table 2.
Figure 2015000822

ここで、「飛散防止性能」は目視により判定したもので、ガラスの飛散が認められないものを○とし、ガラスの飛散が認められるものを×とした。   Here, “scattering prevention performance” was determined by visual observation, and the case where glass scattering was not recognized was evaluated as “◯”, and the case where glass scattering was recognized as “×”.

この結果から、例1〜3では端面からのガラス片の飛散を防止できており、例4〜6では端面からのガラス片の飛散は防止できていなかった。特に、例5及び6のように表面に飛散防止の膜又はフィルムを形成した場合でも、ガラス端面からのガラス片の飛散防止を有効に抑制できるものではなかった。   From this result, scattering of the glass piece from the end face could be prevented in Examples 1 to 3, and scattering of the glass piece from the end face could not be prevented in Examples 4 to 6. In particular, even when a film or film for preventing scattering was formed on the surface as in Examples 5 and 6, it was not possible to effectively suppress the prevention of scattering of the glass pieces from the glass end face.

本発明の飛散防止膜付きカバーガラス及びその製造方法は、広くカバーガラスに適用でき、カバーガラスの端面からのガラス片が飛散するのを有効に防止できる。特に、携帯用電子機器のディスプレイとして使用されるカバーガラスに好適である。   The cover glass with a scattering prevention film of the present invention and the manufacturing method thereof can be widely applied to the cover glass, and can effectively prevent the glass pieces from scattering from the end face of the cover glass. In particular, it is suitable for a cover glass used as a display of a portable electronic device.

1,11…飛散防止膜付きカバーガラス、2…カバーガラス、3,12…飛散防止膜 1, 11 ... Cover glass with anti-scattering film, 2 ... Cover glass, 3, 12 ... Anti-scattering film

Claims (5)

ディスプレイ用のカバーガラスと、
前記カバーガラスの端面に形成された飛散防止膜と、
を有することを特徴とする飛散防止膜付きカバーガラス。
A cover glass for the display;
An anti-scattering film formed on the end surface of the cover glass;
A cover glass with an anti-scattering film.
前記飛散防止膜が端面の全面を被覆して形成されている請求項1記載の飛散防止膜付きカバーガラス。   The cover glass with a scattering prevention film according to claim 1, wherein the scattering prevention film is formed so as to cover the entire end face. さらに、前記カバーガラスの表面に形成された飛散防止膜を有する請求項1又は2に記載の飛散防止膜付きカバーガラス。   Furthermore, the cover glass with a scattering prevention film | membrane of Claim 1 or 2 which has a scattering prevention film | membrane formed in the surface of the said cover glass. 前記飛散防止膜の厚さが0.1μm〜500μmである請求項1〜3のいずれか1項記載の飛散防止膜付きカバーガラス。   The cover glass with a scattering prevention film according to claim 1, wherein the scattering prevention film has a thickness of 0.1 μm to 500 μm. ディスプレイ用のカバーガラスの端面に、飛散防止膜となる樹脂組成物の塗膜を形成する工程と、
前記塗膜を硬化させて飛散防止膜とする工程と、
を有することを特徴とする飛散防止膜付きカバーガラスの製造方法。
A step of forming a coating film of a resin composition that serves as an anti-scattering film on the end face of a cover glass for a display;
Curing the coating film to form an anti-scattering film;
The manufacturing method of the cover glass with a scattering prevention film characterized by having.
JP2013124622A 2013-06-13 2013-06-13 Cover glass with scattering prevention film, and production method of the glass Pending JP2015000822A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2015098844A1 (en) * 2013-12-26 2017-03-23 阪本 順 LAMINATE MANUFACTURING METHOD, LAMINATE MANUFACTURING DEVICE, LAMINATE, AND TOUCH PANEL PROVIDED WITH LAMINATE
US10494543B2 (en) 2015-12-14 2019-12-03 Hyundai Motor Company Shatter-proof glass coating composition, tempered shatter-proof glass using it and method for manufacturing tempered shatter-proof glass
CN112969964A (en) * 2018-09-12 2021-06-15 美商福昌公司 Protective film for flat panel display photomask

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2015098844A1 (en) * 2013-12-26 2017-03-23 阪本 順 LAMINATE MANUFACTURING METHOD, LAMINATE MANUFACTURING DEVICE, LAMINATE, AND TOUCH PANEL PROVIDED WITH LAMINATE
US10078385B2 (en) 2013-12-26 2018-09-18 Jun Sakamoto Laminate manufacturing method, laminate manufacturing apparatus, laminate, and touch panel including laminate
US10494543B2 (en) 2015-12-14 2019-12-03 Hyundai Motor Company Shatter-proof glass coating composition, tempered shatter-proof glass using it and method for manufacturing tempered shatter-proof glass
CN112969964A (en) * 2018-09-12 2021-06-15 美商福昌公司 Protective film for flat panel display photomask

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