JP7015751B2 - Transparent film for mobile terminals - Google Patents

Transparent film for mobile terminals Download PDF

Info

Publication number
JP7015751B2
JP7015751B2 JP2018155310A JP2018155310A JP7015751B2 JP 7015751 B2 JP7015751 B2 JP 7015751B2 JP 2018155310 A JP2018155310 A JP 2018155310A JP 2018155310 A JP2018155310 A JP 2018155310A JP 7015751 B2 JP7015751 B2 JP 7015751B2
Authority
JP
Japan
Prior art keywords
film
display screen
curvature
edges
mobile terminal
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.)
Active
Application number
JP2018155310A
Other languages
Japanese (ja)
Other versions
JP2020030300A (en
Inventor
弘樹 高橋
基典 河内
Original Assignee
エレコム株式会社
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 エレコム株式会社 filed Critical エレコム株式会社
Priority to JP2018155310A priority Critical patent/JP7015751B2/en
Publication of JP2020030300A publication Critical patent/JP2020030300A/en
Application granted granted Critical
Publication of JP7015751B2 publication Critical patent/JP7015751B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Surface Treatment Of Glass (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Telephone Set Structure (AREA)

Description

特許法第３０条第２項適用 別紙記載のウェブサイトの公開日、アドレスApplication of Article 30, Paragraph 2 of the Patent Law Publication date and address of the website described in the attached sheet

特許法第３０条第２項適用 別紙記載の販売日、販売場所Application of Article 30, Paragraph 2 of the Patent Law Sales date and place of sale described in the attached sheet

本発明は、携帯端末の表示画面を保護するための携帯端末用透明フィルムに関する。 The present invention relates to a transparent film for a mobile terminal for protecting the display screen of the mobile terminal.

上記携帯端末用透明フィルムとしては、例えば特許文献１が既に提案され、図３に示している。この携帯端末用透明フィルム１０は、強化ガラスで構成される板状でフラットな強化ガラスフィルム１１と、強化ガラスフィルム１１の裏面に位置する接着層１２と、接着層１２により接着されるＰＥＴ層１３と、ＰＥＴ層１３の裏面に位置しＰＥＴ層１３を携帯端末２の表示画面３に貼り付けるための貼着層１４と、を備えている。なお、携帯端末２は、各種の基板やカメラレンズあるいはバッテリ等を内蔵したケーシングを有する本体４を備え、本体４の上に前記表示画面３が設けられる。 As the transparent film for a mobile terminal, for example, Patent Document 1 has already been proposed and is shown in FIG. The transparent film 10 for a mobile terminal has a plate-shaped and flat tempered glass film 11 made of tempered glass, an adhesive layer 12 located on the back surface of the tempered glass film 11, and a PET layer 13 bonded by the adhesive layer 12. And a sticking layer 14 located on the back surface of the PET layer 13 for sticking the PET layer 13 to the display screen 3 of the mobile terminal 2. The mobile terminal 2 includes a main body 4 having a casing containing various substrates, a camera lens, a battery, and the like, and the display screen 3 is provided on the main body 4.

ところで、近年において携帯端末の表示画面が、新製品の登場とともに大型化している。図３に示すように、前記表示画面３は、上面が略平面形状に構成される画面本体３Ａと、該画面本体３Ａの左右両端のそれぞれから左右方向外側に向けて延設され端に向かうほど下方に位置するように上方に凸となる湾曲面３ｂを有し、かつ、前記本体４の厚み方向に張り出している左右縁部３Ｂ，３Ｂ（図３では一方（右側）のみ図示している）と、を有している。そのため、携帯端末２の表示画面３をできるだけ覆うことができるように携帯端末用透明フィルム１０の大きさを表示画面３の大きさに対応した大きさに設定している。 By the way, in recent years, the display screens of mobile terminals have become larger with the advent of new products. As shown in FIG. 3, the display screen 3 extends from each of the left and right ends of the screen main body 3A whose upper surface is configured to have a substantially planar shape and the left and right ends of the screen main body 3A toward the outside in the left-right direction. Left and right edge portions 3B and 3B having a curved surface 3b that is convex upward so as to be located downward and projecting in the thickness direction of the main body 4 (only one (right side) is shown in FIG. 3). And have. Therefore, the size of the transparent film 10 for the mobile terminal is set to a size corresponding to the size of the display screen 3 so that the display screen 3 of the mobile terminal 2 can be covered as much as possible.

特開２０１３－２４２５６７号公報（図２参照）JP 2013-242567 (see FIG. 2)

図３に、前述した大型化した携帯端末２の表示画面３に上記特許文献１の携帯端末用透明フィルム１０を貼り付けた場合を示している。この携帯端末用透明フィルム１０を表示画面３に貼り付ける場合には、略平面形状の強化ガラスフィルム１１の中心部を画面本体３Ａに容易に貼り付けることができるものの、湾曲面３ｂを有する左右縁部３Ｂ，３Ｂに強化ガラスフィルム１１の左右両端部１１Ｂ，１１Ｂ（図３では一方（右側）のみ図示しているが、他方も同様である）を容易に貼り付けることができない。これは、強化ガラスフィルム１１の左右両端部１１Ｂ，１１Ｂを表示画面３の左右縁部３Ｂ，３Ｂの湾曲面３ｂ，３ｂに押し当てて貼り付けることになるが、押し当てられて曲げられた強化ガラスフィルム１１の左右両端部１１Ｂ，１１Ｂが元に戻ろうとする復元力の方が貼着層１４の貼着力よりも強いため、強化ガラスフィルム１１の左右両端部１１Ｂ，１１Ｂが左右縁部３Ｂ，３Ｂから剥がれてしまう。そのため、強化ガラスフィルム１１の左右両端部１１Ｂ，１１Ｂが左右縁部３Ｂ，３Ｂの湾曲が開始する湾曲開始部分３Ｃ，３Ｃから浮いた状態になってしまうという不都合が発生する。 FIG. 3 shows a case where the transparent film 10 for a mobile terminal of Patent Document 1 is attached to the display screen 3 of the above-mentioned enlarged mobile terminal 2. When the transparent film 10 for a mobile terminal is attached to the display screen 3, the central portion of the tempered glass film 11 having a substantially flat shape can be easily attached to the screen body 3A, but the left and right edges having the curved surface 3b. The left and right end portions 11B and 11B of the tempered glass film 11 (only one (right side) is shown in FIG. 3, but the other is the same) cannot be easily attached to the portions 3B and 3B. This means that the left and right end portions 11B and 11B of the tempered glass film 11 are pressed against the curved surfaces 3b and 3b of the left and right edge portions 3B and 3B of the display screen 3 to be attached, but the tempered glass film 11 is pressed and bent. Since the restoring force that the left and right end portions 11B and 11B of the glass film 11 try to return to their original state is stronger than the attachment force of the attachment layer 14, the left and right end portions 11B and 11B of the tempered glass film 11 are the left and right edge portions 3B, It will come off from 3B. Therefore, there is a problem that the left and right end portions 11B and 11B of the tempered glass film 11 are in a floating state from the bending start portions 3C and 3C where the bending of the left and right edge portions 3B and 3B starts.

本発明が前述の状況に鑑み、解決しようとするところは、できるだけ表示画面を覆うことができながらも、表示画面の左右縁部の湾曲開始部分から浮いた状態にならないように装着できる携帯端末用透明フィルムを提供することにある。 In view of the above-mentioned situation, the present invention is to be solved for a mobile terminal that can cover the display screen as much as possible but can be attached so as not to float from the bending start portion of the left and right edges of the display screen. The purpose is to provide a transparent film.

本発明の携帯端末用透明フィルムは、前述の課題解決のために、本体と、該本体上に配置される表示画面と、を備え、前記表示画面が、上面が略平面形状に構成される画面本体と、該画面本体の左右両端のそれぞれから左右方向外側に向けて延設され端に向かうほど下方に位置するように上方に凸となる湾曲面を有し、かつ、前記本体の厚み方向に張り出している左右縁部と、を備える携帯端末に、前記表示画面を保護するために該表示画面上に配置される携帯端末用透明フィルムであって、裏面が略平面形状に構成され前記画面本体を覆うフィルム本体と、該フィルム本体の左右両端から左右方向外側に向けて延設される左右フィルム縁部と、を備え、少なくとも前記フィルム本体を前記画面本体に粘着するための粘着層を、該フィルム本体の裏面に備え、前記左右フィルム縁部は、前記表示画面の左右縁部の湾曲が開始する湾曲開始部分を覆うとともに該湾曲開始部分の表面に沿うように裏面が端に向かうほど下方に位置するように上方に凸となる湾曲面に形成されていることを特徴としている。 The transparent film for a mobile terminal of the present invention includes a main body and a display screen arranged on the main body in order to solve the above-mentioned problems, and the display screen has a substantially planar shape on the upper surface. It has a curved surface that extends outward in the left-right direction from each of the left and right ends of the main body and the screen main body and is convex upward so as to be located downward toward the end, and in the thickness direction of the main body. A transparent film for a mobile terminal that is arranged on the display screen in order to protect the display screen on a mobile terminal having an overhanging left and right edge portion, and the back surface is configured to have a substantially planar shape and the screen main body. A film body covering the film body and left and right film edges extending outward in the left-right direction from the left and right ends of the film body, and at least an adhesive layer for adhering the film body to the screen body. In preparation for the back surface of the film body, the left and right film edges cover the bending start portion where the left and right edges of the display screen start to bend, and the back surface faces the edge downward so as to follow the front surface of the bending start portion. It is characterized in that it is formed on a curved surface that is convex upward so as to be located.

かかる構成によれば、フィルム本体及び左右フィルム縁部を表示画面に押し当てると、少なくともフィルム本体の裏面に備えている粘着層でフィルム本体が表示画面に粘着される。このとき、裏面が湾曲面に形成された左右フィルム縁部が、表示画面の左右縁部の湾曲開始部分の表面に沿うように該湾曲開始部分を覆う。よって、左右フィルム縁部が、表示画面の左右縁部の湾曲開始部分から浮いた状態にならない。したがって、表示画面の画面本体だけでなく、左右縁部の湾曲開始部分も携帯端末用透明フィルムで良好に覆うことができる。 According to this configuration, when the film body and the left and right film edges are pressed against the display screen, the film body is adhered to the display screen by at least the adhesive layer provided on the back surface of the film body. At this time, the left and right film edges having the back surface formed on the curved surface cover the bending start portion so as to be along the surface of the bending start portion of the left and right edges of the display screen. Therefore, the left and right film edges do not float from the bending start portion of the left and right edges of the display screen. Therefore, not only the screen body of the display screen but also the curved start portions of the left and right edges can be well covered with the transparent film for mobile terminals.

また、本発明の携帯端末用透明フィルムは、前記粘着層を前記左右フィルム縁部それぞれの裏面に備え、前記粘着層の厚みは、前記左右フィルム縁部の裏面のうちの最下端と前記フィルム本体の裏面とのフィルム厚み方向における離間距離よりも大きいことが好ましい。 Further, the transparent film for a portable terminal of the present invention is provided with the adhesive layer on the back surface of each of the left and right film edges, and the thickness of the adhesive layer is the lowermost end of the back surface of the left and right film edges and the film body. It is preferable that the distance from the back surface of the film is larger than the separation distance in the film thickness direction.

上記構成によれば、左右フィルム縁部それぞれの裏面に備える粘着層の厚みを、左右フィルム縁部の裏面のうちの最下端とフィルム本体の裏面とのフィルム厚み方向における離間距離よりも大きくすることによって、左右縁部の曲率半径が携帯端末によって異なる場合であっても、粘着層の厚みで曲率半径の違いを吸収することができ、左右フィルム縁部を左右縁部の湾曲開始部分に確実に粘着させることができる。 According to the above configuration, the thickness of the adhesive layer provided on the back surfaces of the left and right film edges is made larger than the separation distance in the film thickness direction between the lowermost end of the back surfaces of the left and right film edges and the back surface of the film body. Therefore, even if the radius of curvature of the left and right edges differs depending on the mobile terminal, the difference in the radius of curvature can be absorbed by the thickness of the adhesive layer, and the left and right film edges can be reliably placed at the bending start portion of the left and right edges. Can be adhered.

本発明によれば、表示画面の左右縁部の湾曲が開始する湾曲開始部分の表面に沿うように裏面が端に向かうほど下方に位置するように上方に凸となる湾曲面に形成されている左右フィルム縁部を備えることによって、できるだけ表示画面を覆うことができながらも、表示画面の左右縁部の湾曲開始部分から浮いた状態にならないように装着できる携帯端末用透明フィルムを提供することができる。 According to the present invention, the left and right edges of the display screen are formed on a curved surface that is convex upward so that the back surface is located downward toward the end along the front surface of the curvature start portion. By providing the left and right film edges, it is possible to provide a transparent film for mobile terminals that can cover the display screen as much as possible, but can be attached so as not to float from the bending start portion of the left and right edges of the display screen. can.

携帯端末の斜視図である。It is a perspective view of a mobile terminal. （ａ）は携帯端末の表示画面に携帯端末用透明フィルムを粘着させる直前の状態を示す前後方向から見た図、（ｂ）は携帯端末の表示画面に携帯端末用透明フィルムを粘着させた状態を示す前後方向から見た図である。(A) is a front-back view showing the state immediately before the transparent film for the mobile terminal is adhered to the display screen of the mobile terminal, and (b) is the state where the transparent film for the mobile terminal is adhered to the display screen of the mobile terminal. It is a figure seen from the front-rear direction which shows. 従来の携帯端末用透明フィルムを携帯端末の表示画面に粘着させた状態を示す断面図である。It is sectional drawing which shows the state which the conventional transparent film for a mobile terminal is adhered to the display screen of a mobile terminal.

以下、本発明の携帯端末用透明フィルムについて説明する。この携帯端末用透明フィルム１は、図１に示すように、携帯端末（例えばｉＰｈｏｎｅ（登録商標））２の表示画面３を覆うように配設される。なお、図１において携帯端末２の左右方向及び前後方向を設定し、その設定した方向で以下において説明する。 Hereinafter, the transparent film for a mobile terminal of the present invention will be described. As shown in FIG. 1, the transparent film 1 for a mobile terminal is arranged so as to cover the display screen 3 of the mobile terminal (for example, iPhone (registered trademark)) 2. In FIG. 1, the left-right direction and the front-back direction of the mobile terminal 2 are set, and the set directions will be described below.

携帯端末２は、各種の基板やカメラレンズあるいはバッテリ等を内蔵した長方形状のケーシングを有する本体４と、本体４上に配置され、上面が略平面形状で長方形状の前記表示画面３と、を備えている。なお、本体４と表示画面３の左右端部における境界部分に段差が発生しないように、本体４の曲率半径と表示画面３の曲率半径とを略同一にしている。 The mobile terminal 2 has a main body 4 having a rectangular casing containing various substrates, a camera lens, a battery, and the like, and the display screen 3 arranged on the main body 4 and having a substantially flat upper surface and a rectangular shape. I have. The radius of curvature of the main body 4 and the radius of curvature of the display screen 3 are substantially the same so that a step does not occur at the boundary between the main body 4 and the left and right ends of the display screen 3.

表示画面３は、タッチパネルを兼用し、図１及び図２（ａ），（ｂ）に示すように、上面が略平面形状に構成され平面視において長方形状に構成された画面本体３Ａと、画面本体３Ａの左右両端のそれぞれから左右方向外側に向けて延設され端に向かうほど下方に位置するように上方に凸となる湾曲面３ｂを有し、かつ、本体４の厚み方向の上方に張り出している左右縁部３Ｂ，３Ｂ（図１では左側のみを図示し、図２（ａ），（ｂ）では右側のみを図示している）と、を有している。なお、湾曲面３ｂの曲率半径は、携帯端末２を製造するメーカー毎や携帯端末２の機種毎に異なる場合が多い。 The display screen 3 also serves as a touch panel, and as shown in FIGS. 1 and 2 (a) and 2 (b), the screen main body 3A having a substantially planar shape on the upper surface and a rectangular shape in a plan view, and a screen. It has a curved surface 3b that extends outward from each of the left and right ends of the main body 3A toward the outside in the left-right direction and is convex upward so as to be located downward toward the end, and overhangs upward in the thickness direction of the main body 4. The left and right edge portions 3B and 3B (only the left side is shown in FIG. 1 and only the right side is shown in FIGS. 2A and 2B). The radius of curvature of the curved surface 3b often differs depending on the manufacturer of the mobile terminal 2 and the model of the mobile terminal 2.

携帯端末用透明フィルム１は、例えば強化ガラスからなり、表面及び裏面が略平面形状に構成されるフィルム本体１Ａと、フィルム本体１Ａの左右両端から左右方向外側に向けて延設される左右フィルム縁部１Ｂ，１Ｂと、を備えている。左右フィルム縁部１Ｂ，１Ｂは、表示画面３の左右縁部３Ｂ，３Ｂの湾曲が開始される湾曲開始部分３Ｃ，３Ｃ（図２（ａ）の破線間部分）のみを覆うとともに湾曲開始部分３Ｃ，３Ｃの表面に沿うように裏面１Ｒ，１Ｒが端に向かうほど下方に位置するように上方に凸となる湾曲面に形成されている。 The transparent film 1 for a mobile terminal is made of, for example, tempered glass, and has a film body 1A whose front surface and back surface are formed in a substantially planar shape, and left and right film edges extending from the left and right ends of the film body 1A toward the outside in the left-right direction. Parts 1B and 1B are provided. The left and right film edge portions 1B and 1B cover only the curvature start portions 3C and 3C (the portion between the broken lines in FIG. 2A) where the curvature of the left and right edge portions 3B and 3B of the display screen 3 is started, and the curvature start portion 3C. , 3C is formed on a curved surface that is convex upward so that the back surfaces 1R and 1R are located downward toward the end along the front surface.

前記湾曲面のうちの湾曲開始部分３Ｃ，３Ｃの湾曲面が、直線に近い緩やかな湾曲面に形成され、これら湾曲開始部分３Ｃ，３Ｃを覆う左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒも直線に近い緩やかな湾曲面（湾曲開始部分３Ｃ，３Ｃの湾曲面と略同一の湾曲面）に形成されている。このように左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒを直線に近い緩やかな湾曲面に形成することによって、フィルム本体１Ａの裏面１ａ及び左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒに後述する粘着層５を塗布し易い利点もある。言い換えれば、湾曲開始部分３Ｃ，３Ｃの湾曲面の湾曲度合が、湾曲開始部分３Ｃ，３Ｃよりも左右方向外側に位置する他の部分の湾曲面の湾曲度合よりも小さいので、直線に近い緩やかな湾曲面になっている。 Of the curved surfaces, the curved surfaces of the curved start portions 3C and 3C are formed on a gentle curved surface close to a straight line, and the back surfaces 1R and 1R of the left and right film edge portions 1B and 1B covering the curved start portions 3C and 3C are also formed. It is formed on a gently curved surface (curved surface substantially the same as the curved surface of the curved start portions 3C, 3C) that is close to a straight line. By forming the back surfaces 1R and 1R of the left and right film edges 1B and 1B on a gently curved surface close to a straight line in this way, the back surfaces 1a of the film body 1A and the back surfaces 1R and 1R of the left and right film edges 1B and 1B will be described later. There is also an advantage that it is easy to apply the adhesive layer 5 to be applied. In other words, the degree of curvature of the curved surface of the curvature start portions 3C, 3C is smaller than the degree of curvature of the curved surfaces of other portions located on the lateral side in the left-right direction of the curvature start portions 3C, 3C, so that the degree of curvature is close to a straight line. It has a curved surface.

また、左右フィルム縁部１Ｂ，１Ｂの表面が、左右方向外側端に向かうほど下方に位置する上方に凸となる湾曲面に形成されている。この表面の湾曲面の湾曲度合が裏面の湾曲面の湾曲度合よりも大きく設定されているため、左右フィルム縁部１Ｂ，１Ｂの上下の厚みが左右方向外側端に向かうほど細い先細り形状になっているが、表面の湾曲面の湾曲度合を裏面の湾曲面の湾曲度合と略同一にして、どの部分でも同一厚みになるように設定してもよい。 Further, the surfaces of the left and right film edge portions 1B and 1B are formed on a curved surface that is positioned downward toward the outer end in the left-right direction and becomes convex upward. Since the degree of curvature of the curved surface of the front surface is set to be larger than the degree of curvature of the curved surface of the back surface, the upper and lower thicknesses of the left and right film edges 1B and 1B become tapered toward the outer edges in the left-right direction. However, the degree of curvature of the curved surface of the front surface may be set to be substantially the same as the degree of curvature of the curved surface of the back surface so that all the portions have the same thickness.

フィルム本体１Ａの裏面（下面）１ａ及び左右フィルム縁部１Ｂ，１Ｂの裏面（下面）１Ｒ，１Ｒのそれぞれには、粘着層５を備えている。この粘着層５は、シリコン系樹脂、ウレタン系樹脂、アクリル系樹脂のうちの少なくとも1種から構成される。 An adhesive layer 5 is provided on each of the back surface (lower surface) 1a of the film body 1A and the back surfaces (lower surface) 1R and 1R of the left and right film edge portions 1B and 1B. The adhesive layer 5 is composed of at least one of a silicon-based resin, a urethane-based resin, and an acrylic-based resin.

左右フィルム縁部１Ｂ，１Ｂに備える粘着層５の厚み（左右フィルム縁部１Ｂの裏面１Ｒから粘着層５の裏面５Ｒまでの距離）を、左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒのうちの最下端１Ｃとフィルム本体１Ａの裏面１ａとのフィルム厚み方向における離間距離Ｌ（図２（ｂ）参照）よりも大きくしている。よって、左右縁部３Ｂ，３Ｂの曲率半径が携帯端末２によって異なる場合であっても、粘着層５の厚みで曲率半径の違いを吸収することができ、左右フィルム縁部１Ｂ，１Ｂを左右縁部３Ｂ，３Ｂの湾曲開始部分３Ｃ，３Ｃに確実に粘着させることができる。なお、粘着層５の厚みは、フィルム本体１Ａに塗布された部分の厚みと左右フィルム縁部１Ｂ，１Ｂに塗布された部分の厚みとが略同一になっている。 The thickness of the adhesive layer 5 provided on the left and right film edge portions 1B and 1B (the distance from the back surface 1R of the left and right film edge portions 1B to the back surface 5R of the adhesive layer 5) is set among the back surfaces 1R and 1R of the left and right film edge portions 1B and 1B. It is made larger than the separation distance L (see FIG. 2B) between the lowermost end 1C of the film and the back surface 1a of the film body 1A in the film thickness direction. Therefore, even if the radius of curvature of the left and right edge portions 3B and 3B differs depending on the mobile terminal 2, the difference in the radius of curvature can be absorbed by the thickness of the adhesive layer 5, and the left and right film edge portions 1B and 1B are left and right edges. It can be reliably adhered to the curvature start portions 3C and 3C of the portions 3B and 3B. The thickness of the adhesive layer 5 is substantially the same as the thickness of the portion applied to the film body 1A and the thickness of the portion applied to the left and right film edge portions 1B and 1B.

また、携帯端末用透明フィルム１の裏面全体に備える粘着層５の厚み、つまりフィルム本体１Ａの裏面１ａ及び左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒに備える粘着層５の厚みを、左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒのうちの最下端１Ｃとフィルム本体１Ａの裏面１ａとのフィルム厚み方向における離間距離Ｌ（図２（ｂ）参照）よりも大きくしている。換言すれば、フィルム本体１Ａの裏面１ａに備える粘着層５の裏面５Ａ及び左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒに備える粘着層５の裏面５Ｒ，５Ｒが、左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒのうちの最下端１Ｃよりも下方に位置するように表示画面３側に突出している。よって、携帯端末用透明フィルム１を表示画面３に対して位置ずれして左右フィルム縁部１Ｂ，１Ｂが略平面形状の画面本体３Ａに貼り付けられる場合でも、湾曲した左右フィルム縁部１Ｂ，１Ｂを粘着層５の厚みで画面本体３Ａに確実に粘着させることができる。 Further, the thickness of the adhesive layer 5 provided on the entire back surface of the transparent film 1 for a mobile terminal, that is, the thickness of the adhesive layer 5 provided on the back surface 1a of the film body 1A and the back surfaces 1R and 1R of the left and right film edges 1B and 1B is set to the left and right films. It is made larger than the separation distance L (see FIG. 2B) between the lowermost end 1C of the back surfaces 1R and 1R of the edges 1B and 1B and the back surface 1a of the film body 1A in the film thickness direction. In other words, the back surface 5A of the adhesive layer 5 provided on the back surface 1a of the film body 1A and the back surfaces 5R and 5R of the adhesive layer 5 provided on the back surfaces 1R and 1R of the left and right film edge portions 1B and 1B are the left and right film edge portions 1B and 1B. It protrudes toward the display screen 3 so as to be located below the lowermost end 1C of the back surfaces 1R and 1R. Therefore, even when the transparent film 1 for a mobile terminal is displaced with respect to the display screen 3 and the left and right film edges 1B and 1B are attached to the screen body 3A having a substantially flat shape, the curved left and right film edges 1B and 1B are attached. Can be reliably adhered to the screen body 3A with the thickness of the adhesive layer 5.

各湾曲開始部分３Ｃは、各左右縁部３Ｂの左右方向の全長の１／３の長さ又は１／３以下の長さに設定することによって、左右縁部３Ｂ，３Ｂの曲率半径が携帯端末２によって異なる場合であっても、各湾曲開始部分３Ｃに左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒを粘着層５で剥がれることがなく覆うことができ好ましいが、各左右縁部３Ｂの１／３を越える長さでかつ各左右縁部３Ｂの１／２以下の長さであってもよい。 By setting each bending start portion 3C to a length of 1/3 or less than 1/3 of the total length in the left-right direction of each left-right edge portion 3B, the radius of curvature of the left-right edge portions 3B and 3B is a portable terminal. Even if it differs depending on 2, it is preferable that the back surfaces 1R and 1R of the left and right film edge portions 1B and 1B can be covered with the adhesive layer 5 without peeling off on each of the left and right edge portions 3C. It may have a length exceeding / 3 and a length of 1/2 or less of each left and right edge portion 3B.

具体的には、フィルム本体１Ａの裏面１ａから左右フィルム縁部１Ｂ，１Ｂの最下端１Ｃ，１Ｃまでのフィルム厚み方向における離間距離Ｌが０．０１ｍｍ～０．０５ｍｍの範囲の任意の値であり、これに対して粘着層５の厚み（上下方向の寸法）が０．１８ｍｍ～０．２５ｍｍの範囲の任意の値である。また、フィルム本体１Ａの厚みを、ここでは０．３３ｍｍとしているが、他の数値であってもよい。 Specifically, the separation distance L in the film thickness direction from the back surface 1a of the film body 1A to the lowermost ends 1C and 1C of the left and right film edges 1B and 1B is an arbitrary value in the range of 0.01 mm to 0.05 mm. On the other hand, the thickness (dimension in the vertical direction) of the adhesive layer 5 is an arbitrary value in the range of 0.18 mm to 0.25 mm. The thickness of the film body 1A is 0.33 mm here, but other values may be used.

上記のように構成されたフィルム本体１Ａ及び左右フィルム縁部１Ｂ，１Ｂを表示画面３に押し当てると、少なくともフィルム本体１Ａの裏面１ａに備えている粘着層５でフィルム本体１Ａが表示画面３に粘着される。このとき、左右フィルム縁部１Ｂ，１Ｂが、表示画面３の左右縁部３Ｂ，３Ｂの湾曲開始部分３Ｃ，３Ｃに沿うように湾曲開始部分３Ｃ，３Ｃを覆う。しかも、左右フィルム縁部１Ｂ，１Ｂが、左右縁部３Ｂ，３Ｂの湾曲が開始する湾曲開始部分３Ｃ，３Ｃのみを覆うようにしているので、左右縁部３Ｂ，３Ｂの曲率半径が携帯端末によって異なる場合であっても、湾曲開始部分３Ｃ，３Ｃにおける湾曲面の湾曲開始地点から左右方向外側の湾曲終了地点（終端）までのフィルム厚み方向における距離を小さく抑えることができるため、表示画面３の左右縁部３Ｂ，３Ｂの湾曲開始部分３Ｃ，３Ｃから浮いた状態にならない。よって、表示画面３の画面本体３Ａだけでなく、左右縁部３Ｂ，３Ｂの湾曲開始部分３Ｃ，３Ｃを携帯端末用透明フィルム１で良好に覆うことができる。 When the film body 1A and the left and right film edge portions 1B and 1B configured as described above are pressed against the display screen 3, the film body 1A is displayed on the display screen 3 by at least the adhesive layer 5 provided on the back surface 1a of the film body 1A. It is sticky. At this time, the left and right film edge portions 1B and 1B cover the bending start portions 3C and 3C along the bending start portions 3C and 3C of the left and right edge portions 3B and 3B of the display screen 3. Moreover, since the left and right edge portions 1B and 1B cover only the bending start portions 3C and 3C where the left and right edge portions 3B and 3B start to bend, the radius of curvature of the left and right edge portions 3B and 3B depends on the mobile terminal. Even if they are different, the distance in the film thickness direction from the bending start point of the curved surface in the bending start portions 3C and 3C to the bending end point (end) on the outer side in the left-right direction can be kept small, so that the display screen 3 can be displayed. The left and right edge portions 3B and 3B do not float from the bending start portions 3C and 3C. Therefore, not only the screen body 3A of the display screen 3 but also the curved start portions 3C and 3C of the left and right edge portions 3B and 3B can be satisfactorily covered with the transparent film 1 for a mobile terminal.

携帯端末用透明フィルム１の形成方法としては、例えばガラス板を研削機を用いて研削する方法の他、溶融ガラスを金型に入れて形成する方法等が挙げられる。 Examples of the method for forming the transparent film 1 for a mobile terminal include a method of grinding a glass plate using a grinder, a method of putting molten glass in a mold, and the like.

尚、本発明は、前記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

例えば、携帯端末用透明フィルムを貼り付ける携帯端末としては、ｉＰｈｏｎｅ（登録商標）の他、Ａｎｄｏｒｏｉｄ（登録商標）、ｉＰａｄ（登録商標）、ｉＰｏｄ（登録商標）であってもよい。 For example, the mobile terminal to which the transparent film for a mobile terminal is attached may be an Android (registered trademark), an iPad (registered trademark), or an iPod (registered trademark) in addition to the iPhone (registered trademark).

また、前記実施形態では、携帯端末用透明フィルム１を強化ガラスから構成したが、硬質合成樹脂で構成することもできる。 Further, in the above embodiment, the transparent film 1 for a mobile terminal is made of tempered glass, but it can also be made of a hard synthetic resin.

また、前記実施形態では、携帯端末用透明フィルム１のフィルム本体１Ａの裏面１ａ及び左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒに粘着層５を備えたが、フィルム本体１Ａの裏面１ａのみに粘着層５を備えて実施することもできる。 Further, in the above embodiment, the adhesive layer 5 is provided on the back surface 1a of the film body 1A of the transparent film 1 for mobile terminals and the back surfaces 1R and 1R of the left and right film edges 1B and 1B, but only on the back surface 1a of the film body 1A. It can also be carried out with the adhesive layer 5.

また、前記実施形態では、携帯端末用透明フィルム１の裏面全体に備える粘着層５の厚み、つまりフィルム本体１Ａの裏面１ａ及び左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒに備える粘着層５の厚みを、左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒのうちの最下端１Ｃとフィルム本体１Ａの裏面１ａとのフィルム厚み方向における離間距離Ｌ（図２（ｂ）参照）よりも大きくしたが、左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒに備える粘着層５の厚みのみを、左右フィルム縁部１Ｂ，１Ｂの裏面１Ｒ，１Ｒのうちの最下端１Ｃとフィルム本体１Ａの裏面１ａとのフィルム厚み方向における離間距離Ｌ（図２（ｂ）参照）よりも大きくしてもよい。 Further, in the above embodiment, the thickness of the adhesive layer 5 provided on the entire back surface of the transparent film 1 for a mobile terminal, that is, the adhesive layer 5 provided on the back surface 1a of the film body 1A and the back surfaces 1R and 1R of the left and right film edges 1B and 1B. The thickness was made larger than the separation distance L (see FIG. 2B) between the lowermost end 1C of the back surfaces 1R and 1R of the left and right film edges 1B and 1B and the back surface 1a of the film body 1A in the film thickness direction. Only the thickness of the adhesive layer 5 provided on the back surfaces 1R and 1R of the left and right film edge portions 1B and 1B is the thickness of the lowermost end 1C of the back surfaces 1R and 1R of the left and right film edge portions 1B and 1B and the back surface 1a of the film body 1A. It may be larger than the separation distance L (see FIG. 2B) in the film thickness direction.

１…携帯端末用透明フィルム、１Ａ…フィルム本体、１Ｂ…左右フィルム縁部、１Ｃ…最下端、１Ｒ…裏面、１ａ…裏面、２…携帯端末、３…表示画面、３Ａ…画面本体、３Ｂ…左右縁部、３Ｃ…湾曲開始部分、３ｂ…湾曲面、４…本体、５…粘着層、５Ａ…裏面、５Ｒ…裏面、１０…携帯端末用透明フィルム、１１…強化ガラスフィルム、１１Ｂ…左右両端部、１２…接着層、１３…ＰＥＴ層、１４…貼着層、Ｌ…離間距離 1 ... Transparent film for mobile terminals, 1A ... Film body, 1B ... Left and right film edges, 1C ... Bottom edge, 1R ... Back side, 1a ... Back side, 2 ... Mobile terminal, 3 ... Display screen, 3A ... Screen body, 3B ... Left and right edges, 3C ... Curved start part, 3b ... Curved surface, 4 ... Main body, 5 ... Adhesive layer, 5A ... Back side, 5R ... Back side, 10 ... Transparent film for mobile terminals, 11 ... Reinforced glass film, 11B ... Left and right ends Part, 12 ... Adhesive layer, 13 ... PET layer, 14 ... Adhesive layer, L ... Separation distance

Claims (1)

本体と、該本体上に配置される表示画面と、を備え、前記表示画面が、上面が略平面形状に構成される画面本体と、該画面本体の左右両端のそれぞれから左右方向外側に向けて延設され端に向かうほど下方に位置するように上方に凸となる湾曲面を有し、かつ、前記本体の厚み方向に張り出している左右縁部と、を備える携帯端末に、前記表示画面を保護するために該表示画面上に配置される強化ガラスからなる携帯端末用透明フィルムであって、
裏面が略平面形状に構成され前記画面本体を覆うフィルム本体と、該フィルム本体の左右両端から左右方向外側に向けて延設される左右フィルム縁部と、を備え、
少なくとも前記フィルム本体を前記画面本体に粘着するための粘着層を、該フィルム本体の裏面に備え、
前記左右フィルム縁部は、前記表示画面の左右縁部の湾曲が開始する湾曲開始部分のみを覆うとともに該湾曲開始部分の表面に沿うように裏面が端に向かうほど下方に位置するように上方に凸となる直線に近い緩やかな湾曲面に形成され、
前記湾曲開始部分は、該湾曲開始部分の湾曲面の湾曲度合いが左右方向外側に位置する他の部分の湾曲面の湾曲度合よりも小さい直線に近い緩やかな湾曲面を備えていることを特徴とする携帯端末用透明フィルム。 A main body and a display screen arranged on the main body are provided, and the display screen is directed from each of the left and right ends of the screen main body to the outside in the left-right direction. The display screen is provided on a mobile terminal having a curved surface that is extended and protrudes upward so as to be located downward toward the end, and has left and right edges protruding in the thickness direction of the main body. A transparent film for mobile terminals made of tempered glass arranged on the display screen for protection.
A film body having a substantially flat back surface and covering the screen body, and left and right film edges extending from the left and right ends of the film body toward the outside in the left-right direction are provided.
At least an adhesive layer for adhering the film body to the screen body is provided on the back surface of the film body.
The left and right film edges cover only the curvature start portion where the left and right edges of the display screen start to bend, and are located upward so that the back surface is located downward toward the end along the front surface of the curvature start portion. Formed on a gently curved surface that is close to a convex straight line ,
The curvature start portion is characterized by having a gently curved surface close to a straight line in which the degree of curvature of the curved surface of the curved start portion is smaller than the degree of curvature of the curved surface of another portion located on the outer side in the left-right direction. Transparent film for mobile terminals.
JP2018155310A 2018-08-22 2018-08-22 Transparent film for mobile terminals Active JP7015751B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018155310A JP7015751B2 (en) 2018-08-22 2018-08-22 Transparent film for mobile terminals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018155310A JP7015751B2 (en) 2018-08-22 2018-08-22 Transparent film for mobile terminals

Publications (2)

Publication Number Publication Date
JP2020030300A JP2020030300A (en) 2020-02-27
JP7015751B2 true JP7015751B2 (en) 2022-02-03

Family

ID=69622402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018155310A Active JP7015751B2 (en) 2018-08-22 2018-08-22 Transparent film for mobile terminals

Country Status (1)

Country Link
JP (1) JP7015751B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111754871B (en) * 2020-06-23 2022-05-27 武汉华星光电半导体显示技术有限公司 Display screen and display device
CN113791504B (en) * 2021-07-14 2024-04-30 信利光电股份有限公司 Glass cover plate capable of reducing chromatic aberration and display equipment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013129826A (en) 2011-11-22 2013-07-04 Lintec Corp Adhesive and adhesive sheet
JP3195707U (en) 2014-11-17 2015-01-29 株式会社野田スクリーン Curved film
JP2016036126A (en) 2014-08-04 2016-03-17 パッチワークス・インク． Reinforced glass protection film for protecting cellular phone display screen
JP3207091U (en) 2016-07-19 2016-10-20 ホワイトストーン カンパニーリミテッドＷｈｉｔｅｓｔｏｎｅ Ｃｏ．， Ｌｔｄ． Curved cover glass protective film and apparatus for attaching the same
JP2016196383A (en) 2015-04-03 2016-11-24 株式会社アピロス Glass film screen protector for display, production method of the same, and portable terminal
KR101717507B1 (en) 2016-03-02 2017-03-17 주식회사 맥스젠테크놀로지 Composite protecting sheet attached mobile device having curved shape and method of manufacturing the sheet
JP2017171556A (en) 2016-03-25 2017-09-28 旭硝子株式会社 cover glass

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018060081A (en) * 2016-10-06 2018-04-12 株式会社Ｋａｌｂａｓ Protection cover of flat display device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013129826A (en) 2011-11-22 2013-07-04 Lintec Corp Adhesive and adhesive sheet
JP2016036126A (en) 2014-08-04 2016-03-17 パッチワークス・インク． Reinforced glass protection film for protecting cellular phone display screen
JP3195707U (en) 2014-11-17 2015-01-29 株式会社野田スクリーン Curved film
JP2016196383A (en) 2015-04-03 2016-11-24 株式会社アピロス Glass film screen protector for display, production method of the same, and portable terminal
KR101717507B1 (en) 2016-03-02 2017-03-17 주식회사 맥스젠테크놀로지 Composite protecting sheet attached mobile device having curved shape and method of manufacturing the sheet
JP2017171556A (en) 2016-03-25 2017-09-28 旭硝子株式会社 cover glass
JP3207091U (en) 2016-07-19 2016-10-20 ホワイトストーン カンパニーリミテッドＷｈｉｔｅｓｔｏｎｅ Ｃｏ．， Ｌｔｄ． Curved cover glass protective film and apparatus for attaching the same

Also Published As

Publication number Publication date
JP2020030300A (en) 2020-02-27

Similar Documents

Publication Publication Date Title
JP5913697B1 (en) Protector for portable electronic devices
KR101580502B1 (en) Protective film using strengthened glass for display screen
US10067581B2 (en) Glass touch screen protector
KR20230066282A (en) Rollable display device and rollable device
JP5177608B2 (en) Protective sheet mounting structure
US20120110868A1 (en) protective cover and system for electronic devices technical field
TWM515133U (en) Display protection film attaching case for mobile terminal
JP7015751B2 (en) Transparent film for mobile terminals
JP5845370B1 (en) Protective film sticking jig
KR20170086912A (en) The mobile terminal protective film and this method and a manufacturing apparatus for producing
KR101530520B1 (en) Protecting cover for a mobile device and method for manufacturing the same
CN105373189A (en) Protective film composite and pasting method thereof
KR20170064850A (en) Film for protecting front part of portable device and manufacturing method thereof
TW201413324A (en) Tool for attaching protection film for display of mobile electronic device, apparatus for attaching protection film for display of mobile electronic device, kit for attaching protection film for display of mobile electronic device
KR200462082Y1 (en) Protection film to attach in position for mobile terminal display
KR200485672Y1 (en) Screen protection tempered glass for curved mobile device
CN104599594A (en) Display module with reinforced design
KR101512184B1 (en) An accessory for electronic device
KR20140136401A (en) Three dimensional forming film for surface protection of display device and its manufacturing method
EP2885121B1 (en) Device for applying a protective film onto the surface of an item, more particularly onto the display of an electronic device
TWM552285U (en) Protective cover structure used for handheld device
KR101636059B1 (en) An accessory for electronic device
JP6163411B2 (en) Display board for portable electronic devices
KR20160066698A (en) Screen Protection Film Structure For Mobile Phone
JP3198398U (en) Screen protection sheet set for mobile devices

Legal Events

Date Code Title Description
A80 Written request to apply exceptions to lack of novelty of invention

Free format text: JAPANESE INTERMEDIATE CODE: A80

Effective date: 20180913

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200924

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210726

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210730

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210907

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220107

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220124