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WO2014091829A1 - Mobile-display cover glass, and mobile display - Google Patents

Mobile-display cover glass, and mobile display Download PDF

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Publication number
WO2014091829A1
WO2014091829A1 PCT/JP2013/078999 JP2013078999W WO2014091829A1 WO 2014091829 A1 WO2014091829 A1 WO 2014091829A1 JP 2013078999 W JP2013078999 W JP 2013078999W WO 2014091829 A1 WO2014091829 A1 WO 2014091829A1
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WO
WIPO (PCT)
Prior art keywords
mobile display
display
mobile
cover glass
surface portion
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.)
Ceased
Application number
PCT/JP2013/078999
Other languages
French (fr)
Japanese (ja)
Inventor
和田　正紀
小谷　修
政幸 池本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Electric Glass Co Ltd
Original Assignee
Nippon Electric Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Electric Glass Co Ltd filed Critical Nippon Electric Glass Co Ltd
Publication of WO2014091829A1 publication Critical patent/WO2014091829A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2204/00—Glasses, glazes or enamels with special properties
    • C03C2204/08—Glass having a rough surface

Definitions

  • the present invention relates to a cover glass for a mobile display and a mobile display including the same.
  • a mobile device having a display such as a mobile phone, a smartphone, a notebook personal computer, and a tablet personal computer have been widely used (hereinafter, a mobile device having a display is referred to as a “mobile display”). .
  • Patent Document 1 describes a cover glass that can be used for a mobile display.
  • the cover glass described in Patent Literature 1 includes a front surface portion positioned on the front surface of the image display portion, a bent portion bent from the front surface portion on both sides in the width direction of the image display portion, and a skirt portion connected to the bent portion. .
  • Patent Document 1 there is a desire to improve the handling of a mobile display using a cover glass that covers the front and side surfaces of the mobile display.
  • the main object of the present invention is to provide a cover glass for mobile display capable of realizing a mobile display excellent in handleability.
  • the first mobile display cover glass according to the present invention includes a front portion and a side portion.
  • the front part is located on the display part of the mobile display.
  • the side part is connected to the front part.
  • the side part is located on the side of the mobile display.
  • the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is larger than the surface roughness (Ra) of the outer surface of the front surface portion.
  • the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is 100 times or more the surface roughness (Ra) of the outer surface of the front surface portion. It is preferable.
  • the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is 0.5 ⁇ m or more.
  • irregularities may be provided on at least a part of the outer surface of the side surface portion. In that case, it is preferable that the distance between the top part and the bottom part of the unevenness is 50 ⁇ m or more in the perpendicular direction of the side surface part.
  • the second mobile display cover glass according to the present invention includes a front surface portion and a side surface portion.
  • the front part is located on the display part of the mobile display.
  • the side part is connected to the front part.
  • the side part is located on the side of the mobile display. Concavities and convexities are provided on at least a part of the outer surface of the side surface portion.
  • the distance between the top and bottom of the unevenness is 50 ⁇ m or more in the direction perpendicular to the side surface.
  • the first mobile display according to the present invention includes a mobile display main body and a cover glass.
  • the mobile display main body has a display unit on the main surface.
  • the cover glass has a front surface portion and a side surface portion.
  • the front part is arranged on the display part.
  • the side part is connected to the front part.
  • the side part is arranged on the side of the mobile display main body.
  • the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is larger than the surface roughness (Ra) of the outer surface of the front surface portion.
  • the second mobile display according to the present invention includes a mobile display main body and a cover glass.
  • the mobile display main body has a display unit on the main surface.
  • the cover glass has a front surface portion and a side surface portion.
  • the front part is arranged on the display part.
  • the side part is connected to the front part.
  • the side part is arranged on the side of the mobile display main body. Concavities and convexities are provided on at least a part of the outer surface of the side surface portion.
  • a cover glass for a mobile display capable of realizing a mobile display excellent in handleability.
  • FIG. 1 is a schematic perspective view of a mobile display according to an embodiment of the present invention.
  • FIG. 2 is a schematic side view of a mobile display according to an embodiment of the present invention.
  • FIG. 3 is a schematic perspective view for explaining a portion having a large surface roughness in the mobile display according to the embodiment of the present invention.
  • FIG. 4 is a schematic side view of a mobile display according to another embodiment of the present invention.
  • FIG. 1 is a schematic perspective view of a mobile display 1 in the present embodiment.
  • FIG. 2 is a schematic side view of the mobile display 1 in the present embodiment.
  • the mobile display 1 may be, for example, a mobile phone, a smartphone, a notebook personal computer, a tablet personal computer, or the like.
  • the mobile display 1 includes a mobile display main body 20 and a cover glass 10.
  • the mobile display body 20 is provided in a rectangular plate shape having a main surface 21 and side surfaces 22 and 23 located on the long side of the main surface 21.
  • the shape of the mobile display body is not particularly limited as long as it is plate-shaped.
  • the main surface 21 has a display unit for displaying images, characters, and the like.
  • the display unit may constitute a touch panel surface.
  • the side surfaces 22 and 23 may also have a display unit constituting a display unit and a touch panel surface.
  • the cover glass 10 is provided so as to cover the main surface 21 and the side surfaces 22 and 23 of the mobile display body 20.
  • the cover glass 10 can be composed of, for example, a chemically strengthened glass plate made of chemically strengthened glass, a crystallized glass plate, or the like.
  • the thickness of the cover glass 10 is not particularly limited, but is preferably 0.2 mm to 1.5 mm, more preferably 0.25 mm to 1.1 mm, and preferably 0.3 mm to 1.0 mm. Further preferred.
  • the cover glass 10 has a front surface part 11.
  • the front surface portion 11 is disposed above the main surface 21 of the mobile display body 20.
  • the front part 11 is flat form from a viewpoint of improving the display quality of a display.
  • both main surfaces of the front part 11 have high flatness.
  • the surface roughness (Ra) of the outer surface (the main surface on the z1 side) of the front surface portion 11 is small.
  • the surface roughness (Ra) of each of the outer surface and the inner surface of the front surface portion 11 is preferably 0.01 ⁇ m or less, and more preferably 0.008 ⁇ m or less.
  • the surface roughness (Ra) is an arithmetic average roughness (Ra) defined by JIS B0601-2001.
  • the surface roughness (Ra) can be measured by using Surfcom 5000DX manufactured by Tokyo Seimitsu Co., Ltd.
  • Platinum includes being substantially flat.
  • a “flat plate” includes a plate having one surface and another surface inclined within a range of 5 ° or less with respect to the one surface.
  • a first side surface portion 12 is connected to an end portion on the x1 side in the x-axis direction of the front surface portion 11.
  • the first side surface portion 12 is a portion disposed on the side of the mobile display main body 20. Specifically, the first side surface portion 12 is disposed on the x1 side of the mobile display body 20 in the x-axis direction.
  • the first side surface portion 12 includes a first bent portion 12a.
  • the first bent portion 12 a is connected to the front surface portion 11.
  • the first bent portion 12a is bent from the end portion on the x1 side in the x-axis direction of the front surface portion 11 toward the rear side (z2 side).
  • the bending angle which is the size of each of the tangent line of the inner wall surface at the x1 side end portion of the front surface portion 11 and the tangent line of the inner wall surface at the tip of the first side surface portion 12, is 90 ° to 170 °.
  • the angle is preferably 90 ° to 150 °.
  • the first side surface portion 12 includes a first bent portion 12a and a first flat plate portion 12b connected to the tip of the first bent portion 12a.
  • the 1st side part 12 may be comprised only by the 1st bending part 12a, for example.
  • a second side surface portion 13 is connected to the x2 side end portion of the front surface portion 11 in the x-axis direction.
  • This 2nd side part 13, the front part 11, and the 1st side part 12 are comprised by the glass plate of 1 sheet.
  • the second side surface portion 13 is a portion disposed on the side of the mobile display main body 20. Specifically, the second side surface portion 13 is disposed on the x2 side of the mobile display main body 20 in the x-axis direction.
  • the second side surface portion 13 includes a second bent portion 13a.
  • the second bent portion 13 a is connected to the front surface portion 11.
  • the second bent portion 13a is bent from the x2 side end portion in the x-axis direction of the front surface portion 11 toward the rear (z2 side).
  • the bending angle between the front surface portion 11 and the second side surface portion 13 is preferably 90 ° to 170 °, and more preferably 90 ° to 150 °.
  • the second side surface portion 13 includes a second bent portion 13a and a second flat plate portion 13b connected to the tip of the second bent portion 13a.
  • the 2nd side part 13 may be comprised only by the 2nd bending part 13a, for example.
  • the mobile display 1 is normally held by placing a finger on the side surface portion 12 and the side surface portion 13.
  • the surface roughness (Ra) of at least a part of the outer surfaces of the side surface portions 12 and 13 is larger than the surface roughness (Ra) of the outer surface of the front surface portion 11.
  • the frictional force generated between the side surface parts 12, 13 and the finger is large, and the finger is difficult to slip. Therefore, the mobile display 1 has excellent grip properties. Therefore, the mobile display 1 is excellent in handleability.
  • the surface roughness (Ra) of the outer surface of the cover glass 10 increases, and the display quality may be reduced.
  • the surface roughness (Ra) of the outer surface of the front surface portion 11 located on the display portion is reduced, while the surface roughness (Ra) of at least a part of the side surface portions 12 and 13 is reduced.
  • the surface roughness (Ra) of at least a part of the outer surface of the side surface portions 12 and 13 is 100 times or more the surface roughness (Ra) of the outer surface of the front surface portion 11. It is preferable that it is 200 times or more.
  • the surface roughness (Ra) of the outer surfaces of the side surface parts 12 and 13 is preferably 0.5 ⁇ m or more, more preferably 0.8 ⁇ m or more, and further preferably 1 ⁇ m or more. preferable.
  • the surface roughness (Ra) of the front end portion 13b1 of the flat plate portion 13b of the side surface portion 13 is larger than the surface roughness (Ra) of the outer surface of the front surface portion 11.
  • the surface roughness (Ra) of the outer surface of the portion of the side surface portion 13 other than the tip portion 13b1 and the bent portion 13a is substantially the same as the surface roughness (Ra) of the outer surface of the front surface portion 11.
  • the surface roughness (Ra) of the front end portion 12 b 1 of the flat plate portion 12 b is larger than the surface roughness (Ra) of the outer surface of the front surface portion 11.
  • the surface roughness (Ra) of the outer surface of the portion other than the tip portion 12b1 of the side surface portion 12 and the bent portion 12a is substantially the same as the surface roughness (Ra) of the outer surface of the front surface portion 11.
  • the method of increasing the surface roughness (Ra) of at least a part of the outer surfaces of the side surface parts 12 and 13 is not particularly limited.
  • the surface roughness (Ra) is obtained by pressing a member having a large surface roughness (Ra) (for example, a pressing tool). May form a large part.
  • a portion having a large surface roughness (Ra) may be formed by chemical etching or blasting.
  • the outer surfaces of the side surface portions 12 and 13 may be provided with irregularities.
  • the distance between the top and bottom of the irregularities is preferably 50 ⁇ m or more, and more preferably 70 ⁇ m or more in the perpendicular direction of the side surfaces 12 and 13.
  • the distance between the top and bottom of the irregularities is preferably 1 ⁇ 2 or less of the average thickness of the side surface parts 12 and 13.
  • the shape of the unevenness provided on the side surfaces 12 and 13 is not particularly limited.
  • the unevenness provided on the side surfaces 12 and 13 may be provided in a linear shape, or may be provided in a pyramid shape, a cone shape, a truncated pyramid shape, a truncated cone shape, a prism shape, or a columnar shape.
  • a plurality of types of irregularities having at least one of shape and size may be provided on the side surfaces 12 and 13.
  • the surface roughness (Ra) of at least part of the outer surface of the side surface parts 12 and 13 is It is not necessarily required to be larger than the surface roughness (Ra) of the outer surface of the front surface portion 11.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Telephone Set Structure (AREA)

Abstract

Provided is a mobile-display cover glass with which a mobile display exhibiting excellent handling properties can be achieved. A mobile-display cover glass (10) is provided with a front-surface part (11) and a side-surface part (12). The front-surface part (11) is positioned above a display unit of a mobile display. The side-surface part (12) is connected to the front-surface part (11). The side-surface part (12) is positioned at a side surface of the mobile display. The surface roughness (Ra) of at least a portion of an outer surface of the side-surface part (12) is greater than the surface roughness (Ra) of an outer surface of the front-surface part (11).

Description

モバイルディスプレイ用カバーガラス及びモバイルディスプレイCover glass for mobile display and mobile display

　本発明は、モバイルディスプレイ用カバーガラス及びそれを備えるモバイルディスプレイに関する。 The present invention relates to a cover glass for a mobile display and a mobile display including the same.

　近年、携帯電話機、スマートフォン、ノート型パーソナルコンピューター、タブレットパーソナルコンピューターなどのディスプレイを備えたモバイル機器が広く用いられるようになってきている（以下、ディスプレイを備えたモバイル機器を「モバイルディスプレイ」という。）。 In recent years, mobile devices having a display such as a mobile phone, a smartphone, a notebook personal computer, and a tablet personal computer have been widely used (hereinafter, a mobile device having a display is referred to as a “mobile display”). .

　特許文献１には、モバイルディスプレイに用い得るカバーガラスが記載されている。特許文献１に記載のカバーガラスは、画像表示部の前面に位置する前面部と、画像表示部の幅方向両側において前面部から屈曲する屈曲部と、屈曲部に接続されたスカート部とを備える。 Patent Document 1 describes a cover glass that can be used for a mobile display. The cover glass described in Patent Literature 1 includes a front surface portion positioned on the front surface of the image display portion, a bent portion bent from the front surface portion on both sides in the width direction of the image display portion, and a skirt portion connected to the bent portion. .

特開２０１２－１０１９７５号公報JP 2012-101975 A

　特許文献１に記載のように、モバイルディスプレイの前面及び側面を覆うカバーガラスを用いたモバイルディスプレイの取り扱い性を改善したいという要望がある。 As described in Patent Document 1, there is a desire to improve the handling of a mobile display using a cover glass that covers the front and side surfaces of the mobile display.

　本発明の主な目的は、取り扱い性に優れたモバイルディスプレイを実現し得るモバイルディスプレイ用カバーガラスを提供することにある。 The main object of the present invention is to provide a cover glass for mobile display capable of realizing a mobile display excellent in handleability.

　本発明に係る第１のモバイルディスプレイ用カバーガラスは、前面部と、側面部とを備える。前面部は、モバイルディスプレイの表示部の上に位置する。側面部は、前面部に接続されている。側面部は、モバイルディスプレイの側面に位置する。側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前面部の外表面の表面粗さ（Ｒａ）よりも大きい。 The first mobile display cover glass according to the present invention includes a front portion and a side portion. The front part is located on the display part of the mobile display. The side part is connected to the front part. The side part is located on the side of the mobile display. The surface roughness (Ra) of at least a part of the outer surface of the side surface portion is larger than the surface roughness (Ra) of the outer surface of the front surface portion.

　本発明に係る第１のモバイルディスプレイ用カバーガラスにおいて、側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前面部の外表面の表面粗さ（Ｒａ）の１００倍以上であることが好ましい。 In the first cover glass for mobile display according to the present invention, the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is 100 times or more the surface roughness (Ra) of the outer surface of the front surface portion. It is preferable.

　本発明に係る第１のモバイルディスプレイ用カバーガラスにおいて、側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、０．５μｍ以上であることが好ましい。 In the first mobile display cover glass according to the present invention, it is preferable that the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is 0.5 μm or more.

　本発明に係る第１のモバイルディスプレイ用カバーガラスにおいて、側面部の外表面の少なくとも一部に凹凸が設けられていてもよい。その場合、側面部の垂線方向において、凹凸の頂部と底部との間の距離が５０μｍ以上であることが好ましい。 In the first cover glass for mobile display according to the present invention, irregularities may be provided on at least a part of the outer surface of the side surface portion. In that case, it is preferable that the distance between the top part and the bottom part of the unevenness is 50 μm or more in the perpendicular direction of the side surface part.

　本発明に係る第２のモバイルディスプレイ用カバーガラスは、前面部と、側面部とを備える。前面部は、モバイルディスプレイの表示部の上に位置する。側面部は、前面部に接続されている。側面部は、モバイルディスプレイの側面に位置する。側面部の外表面の少なくとも一部に凹凸が設けられている。 The second mobile display cover glass according to the present invention includes a front surface portion and a side surface portion. The front part is located on the display part of the mobile display. The side part is connected to the front part. The side part is located on the side of the mobile display. Concavities and convexities are provided on at least a part of the outer surface of the side surface portion.

　本発明に係る第２のモバイルディスプレイ用カバーガラスでは、側面部の垂線方向において、凹凸の頂部と底部との間の距離が５０μｍ以上であることが好ましい。 In the second cover glass for a mobile display according to the present invention, it is preferable that the distance between the top and bottom of the unevenness is 50 μm or more in the direction perpendicular to the side surface.

　本発明に係る第１のモバイルディスプレイは、モバイルディスプレイ本体と、カバーガラスとを備える。モバイルディスプレイ本体は、主面に表示部を有する。カバーガラスは、前面部と、側面部とを有する。前面部は、表示部の上に配されている。側面部は、前面部に接続されている。側面部は、モバイルディスプレイ本体の側方に配されている。側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前面部の外表面の表面粗さ（Ｒａ）よりも大きい。 The first mobile display according to the present invention includes a mobile display main body and a cover glass. The mobile display main body has a display unit on the main surface. The cover glass has a front surface portion and a side surface portion. The front part is arranged on the display part. The side part is connected to the front part. The side part is arranged on the side of the mobile display main body. The surface roughness (Ra) of at least a part of the outer surface of the side surface portion is larger than the surface roughness (Ra) of the outer surface of the front surface portion.

　本発明に係る第２のモバイルディスプレイは、モバイルディスプレイ本体と、カバーガラスとを備える。モバイルディスプレイ本体は、主面に表示部を有する。カバーガラスは、前面部と、側面部とを有する。前面部は、表示部の上に配されている。側面部は、前面部に接続されている。側面部は、モバイルディスプレイ本体の側方に配されている。側面部の外表面の少なくとも一部に凹凸が設けられている。 The second mobile display according to the present invention includes a mobile display main body and a cover glass. The mobile display main body has a display unit on the main surface. The cover glass has a front surface portion and a side surface portion. The front part is arranged on the display part. The side part is connected to the front part. The side part is arranged on the side of the mobile display main body. Concavities and convexities are provided on at least a part of the outer surface of the side surface portion.

　本発明によれば、取り扱い性に優れたモバイルディスプレイを実現し得るモバイルディスプレイ用カバーガラスを提供することができる。 According to the present invention, it is possible to provide a cover glass for a mobile display capable of realizing a mobile display excellent in handleability.

図１は、本発明の一実施形態におけるモバイルディスプレイの模式的斜視図である。FIG. 1 is a schematic perspective view of a mobile display according to an embodiment of the present invention. 図２は、本発明の一実施形態におけるモバイルディスプレイの模式的側面図である。FIG. 2 is a schematic side view of a mobile display according to an embodiment of the present invention. 図３は、本発明の一実施形態のモバイルディスプレイにおいて表面粗さが大きな部分を説明するための模式的斜視図である。FIG. 3 is a schematic perspective view for explaining a portion having a large surface roughness in the mobile display according to the embodiment of the present invention. 図４は、本発明の他の実施形態におけるモバイルディスプレイの模式的側面図である。FIG. 4 is a schematic side view of a mobile display according to another embodiment of the present invention.

　以下、本発明を実施した好ましい形態の一例について説明する。但し、下記の実施形態は、単なる例示である。本発明は、下記の実施形態に何ら限定されない。 Hereinafter, an example of a preferable embodiment in which the present invention is implemented will be described. However, the following embodiment is merely an example. The present invention is not limited to the following embodiments.

　また、実施形態等において参照する各図面において、実質的に同一の機能を有する部材は同一の符号で参照することとする。また、実施形態等において参照する図面は、模式的に記載されたものである。図面に描画された物体の寸法の比率などは、現実の物体の寸法の比率などとは異なる場合がある。図面相互間においても、物体の寸法比率等が異なる場合がある。具体的な物体の寸法比率等は、以下の説明を参酌して判断されるべきである。 In each drawing referred to in the embodiment and the like, members having substantially the same function are referred to by the same reference numerals. The drawings referred to in the embodiments and the like are schematically described. A ratio of dimensions of an object drawn in a drawing may be different from a ratio of dimensions of an actual object. The dimensional ratio of the object may be different between the drawings. The specific dimensional ratio of the object should be determined in consideration of the following description.

　図１は、本実施形態におけるモバイルディスプレイ１の模式的斜視図である。図２は、本実施形態におけるモバイルディスプレイ１の模式的側面図である。 FIG. 1 is a schematic perspective view of a mobile display 1 in the present embodiment. FIG. 2 is a schematic side view of the mobile display 1 in the present embodiment.

　モバイルディスプレイ１は、例えば、携帯電話機、スマートフォン、ノート型パーソナルコンピューター、タブレットパーソナルコンピューターなどであってもよい。 The mobile display 1 may be, for example, a mobile phone, a smartphone, a notebook personal computer, a tablet personal computer, or the like.

　図１及び図２に示されるように、モバイルディスプレイ１は、モバイルディスプレイ本体２０と、カバーガラス１０とを備えている。モバイルディスプレイ本体２０は、主面２１と、主面２１の長辺側に位置する側面２２，２３とを有する矩形板状に設けられている。但し、本発明において、モバイルディスプレイ本体の形状は、板状である限りにおいて特に限定されない。 As shown in FIGS. 1 and 2, the mobile display 1 includes a mobile display main body 20 and a cover glass 10. The mobile display body 20 is provided in a rectangular plate shape having a main surface 21 and side surfaces 22 and 23 located on the long side of the main surface 21. However, in the present invention, the shape of the mobile display body is not particularly limited as long as it is plate-shaped.

　主面２１は、画像や文字等を表示する表示部を有する。表示部は、タッチパネル面を構成していてもよい。また、側面２２，２３も表示部、タッチパネル面を構成している表示部を有していてもよい。 The main surface 21 has a display unit for displaying images, characters, and the like. The display unit may constitute a touch panel surface. Further, the side surfaces 22 and 23 may also have a display unit constituting a display unit and a touch panel surface.

　カバーガラス１０は、モバイルディスプレイ本体２０の主面２１及び側面２２，２３を覆うように設けられている。 The cover glass 10 is provided so as to cover the main surface 21 and the side surfaces 22 and 23 of the mobile display body 20.

　カバーガラス１０は、例えば、化学強化ガラスからなる化学強化ガラス板や、結晶化ガラス板等により構成することができる。カバーガラス１０の厚みは、特に限定されないが、０．２ｍｍ～１．５ｍｍであることが好ましく、０．２５ｍｍ～１．１ｍｍであることがより好ましく、０．３ｍｍ～１．０ｍｍであることがさらに好ましい。 The cover glass 10 can be composed of, for example, a chemically strengthened glass plate made of chemically strengthened glass, a crystallized glass plate, or the like. The thickness of the cover glass 10 is not particularly limited, but is preferably 0.2 mm to 1.5 mm, more preferably 0.25 mm to 1.1 mm, and preferably 0.3 mm to 1.0 mm. Further preferred.

　カバーガラス１０は、前面部１１を有する。前面部１１は、モバイルディスプレイ本体２０の主面２１の上方に配されている。このため、ディスプレイの表示品位を高める観点から、前面部１１は、平板状であることが好ましい。前面部１１の両主面の平坦性が高いことが好ましい。また、前面部１１の外表面（ｚ１側の主面）の表面粗さ（Ｒａ）が小さいことが好ましい。具体的には、前面部１１の外表面及び内表面のそれぞれの表面粗さ（Ｒａ）は、０．０１μｍ以下であることが好ましく、０．００８μｍ以下であることがより好ましい。なお、ここで、表面粗さ（Ｒａ）とは、ＪＩＳ　Ｂ０６０１－２００１で規定される算術平均粗さ（Ｒａ）のことである。表面粗さ（Ｒａ）は、東京精密株式会社製サーフコム５０００ＤＸを用いることにより測定することができる。 The cover glass 10 has a front surface part 11. The front surface portion 11 is disposed above the main surface 21 of the mobile display body 20. For this reason, it is preferable that the front part 11 is flat form from a viewpoint of improving the display quality of a display. It is preferable that both main surfaces of the front part 11 have high flatness. Moreover, it is preferable that the surface roughness (Ra) of the outer surface (the main surface on the z1 side) of the front surface portion 11 is small. Specifically, the surface roughness (Ra) of each of the outer surface and the inner surface of the front surface portion 11 is preferably 0.01 μm or less, and more preferably 0.008 μm or less. Here, the surface roughness (Ra) is an arithmetic average roughness (Ra) defined by JIS B0601-2001. The surface roughness (Ra) can be measured by using Surfcom 5000DX manufactured by Tokyo Seimitsu Co., Ltd.

　「平板状」には、実質的に平板状であることが含まれる。例えば、「平板」には、一の表面と、一の表面に対して５°以下の範囲で傾斜した他の表面とを有する板が含まれるものとする。 “Platform” includes being substantially flat. For example, a “flat plate” includes a plate having one surface and another surface inclined within a range of 5 ° or less with respect to the one surface.

　前面部１１のｘ軸方向におけるｘ１側端部には、第１の側面部１２が接続されている。この第１の側面部１２は、モバイルディスプレイ本体２０の側方に配される部分である。具体的には、第１の側面部１２は、モバイルディスプレイ本体２０のｘ軸方向のｘ１側に配される。 A first side surface portion 12 is connected to an end portion on the x1 side in the x-axis direction of the front surface portion 11. The first side surface portion 12 is a portion disposed on the side of the mobile display main body 20. Specifically, the first side surface portion 12 is disposed on the x1 side of the mobile display body 20 in the x-axis direction.

　第１の側面部１２は、第１の屈曲部１２ａを含む。第１の屈曲部１２ａは、前面部１１に接続されている。第１の屈曲部１２ａは、前面部１１のｘ軸方向におけるｘ１側端部から後方（ｚ２側）に向かって屈曲している。前面部１１のｘ１側端部における内壁面の接線と、第１の側面部１２の先端における内壁面の接線とのなす各の大きさである屈曲角は、９０°～１７０°であることが好ましく、９０°～１５０°であることがより好ましい。 The first side surface portion 12 includes a first bent portion 12a. The first bent portion 12 a is connected to the front surface portion 11. The first bent portion 12a is bent from the end portion on the x1 side in the x-axis direction of the front surface portion 11 toward the rear side (z2 side). The bending angle, which is the size of each of the tangent line of the inner wall surface at the x1 side end portion of the front surface portion 11 and the tangent line of the inner wall surface at the tip of the first side surface portion 12, is 90 ° to 170 °. The angle is preferably 90 ° to 150 °.

　なお、本実施形態では、第１の側面部１２は、第１の屈曲部１２ａと、第１の屈曲部１２ａの先端に接続された第１の平板部１２ｂとを有する。但し、本発明は、この構成に限定されない。第１の側面部１２は、例えば、第１の屈曲部１２ａのみにより構成されていてもよい。 In the present embodiment, the first side surface portion 12 includes a first bent portion 12a and a first flat plate portion 12b connected to the tip of the first bent portion 12a. However, the present invention is not limited to this configuration. The 1st side part 12 may be comprised only by the 1st bending part 12a, for example.

　前面部１１のｘ軸方向におけるｘ２側端部には、第２の側面部１３が接続されている。この第２の側面部１３と、前面部１１及び第１の側面部１２とは、一枚のガラス板により構成されている。第２の側面部１３は、モバイルディスプレイ本体２０の側方に配される部分である。具体的には、第２の側面部１３は、モバイルディスプレイ本体２０のｘ軸方向のｘ２側に配される。 A second side surface portion 13 is connected to the x2 side end portion of the front surface portion 11 in the x-axis direction. This 2nd side part 13, the front part 11, and the 1st side part 12 are comprised by the glass plate of 1 sheet. The second side surface portion 13 is a portion disposed on the side of the mobile display main body 20. Specifically, the second side surface portion 13 is disposed on the x2 side of the mobile display main body 20 in the x-axis direction.

　第２の側面部１３は、第２の屈曲部１３ａを含む。第２の屈曲部１３ａは、前面部１１に接続されている。第２の屈曲部１３ａは、前面部１１のｘ軸方向におけるｘ２側端部から後方（ｚ２側）に向かって屈曲している。前面部１１と第２の側面部１３との屈曲角は、９０°～１７０°であることが好ましく、９０°～１５０°であることがより好ましい。 The second side surface portion 13 includes a second bent portion 13a. The second bent portion 13 a is connected to the front surface portion 11. The second bent portion 13a is bent from the x2 side end portion in the x-axis direction of the front surface portion 11 toward the rear (z2 side). The bending angle between the front surface portion 11 and the second side surface portion 13 is preferably 90 ° to 170 °, and more preferably 90 ° to 150 °.

　なお、本実施形態では、第２の側面部１３は、第２の屈曲部１３ａと、第２の屈曲部１３ａの先端に接続された第２の平板部１３ｂとを有する。但し、本発明は、この構成に限定されない。第２の側面部１３は、例えば、第２の屈曲部１３ａのみにより構成されていてもよい。 In the present embodiment, the second side surface portion 13 includes a second bent portion 13a and a second flat plate portion 13b connected to the tip of the second bent portion 13a. However, the present invention is not limited to this configuration. The 2nd side part 13 may be comprised only by the 2nd bending part 13a, for example.

　ところで、モバイルディスプレイ１は、通常、側面部１２と側面部１３とに指を当てて把持される。ここで、モバイルディスプレイ１では、側面部１２，１３の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前面部１１の外表面の表面粗さ（Ｒａ）よりも大きい。このため、側面部１２，１３と指との間に生じる摩擦力が大きく、指が滑りにくい。従って、モバイルディスプレイ１は、優れたグリップ性を有する。よって、モバイルディスプレイ１は、取り扱い性に優れている。 By the way, the mobile display 1 is normally held by placing a finger on the side surface portion 12 and the side surface portion 13. Here, in the mobile display 1, the surface roughness (Ra) of at least a part of the outer surfaces of the side surface portions 12 and 13 is larger than the surface roughness (Ra) of the outer surface of the front surface portion 11. For this reason, the frictional force generated between the side surface parts 12, 13 and the finger is large, and the finger is difficult to slip. Therefore, the mobile display 1 has excellent grip properties. Therefore, the mobile display 1 is excellent in handleability.

　なお、カバーガラス１０の外表面の全体の表面粗さ（Ｒａ）を大きくすることも考えられる。しかしながら、その場合は、前面部の外表面の表面粗さ（Ｒａ）も大きくなるため、表示品位が低下する場合がある。一方、本実施形態のように、表示部の上に位置する前面部１１の外表面の表面粗さ（Ｒａ）を小さくする一方、側面部１２，１３の少なくとも一部の表面粗さ（Ｒａ）を大きくした場合は、表示品位を低下させることなく、優れたグリップ性を実現することができる。 Note that it is also conceivable to increase the overall surface roughness (Ra) of the outer surface of the cover glass 10. However, in that case, the surface roughness (Ra) of the outer surface of the front surface portion also increases, and the display quality may be reduced. On the other hand, as in the present embodiment, the surface roughness (Ra) of the outer surface of the front surface portion 11 located on the display portion is reduced, while the surface roughness (Ra) of at least a part of the side surface portions 12 and 13 is reduced. When is increased, excellent grip performance can be realized without degrading the display quality.

　より優れたグリップ性を実現する観点からは、側面部１２，１３の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前面部１１の外表面の表面粗さ（Ｒａ）の１００倍以上であることが好ましく、２００倍以上であることがより好ましい。具体的には、側面部１２，１３の外表面の表面粗さ（Ｒａ）は、０．５μｍ以上であることが好ましく、０．８μｍ以上であることがより好ましく、１μｍ以上であることがさらに好ましい。 From the viewpoint of realizing better gripping properties, the surface roughness (Ra) of at least a part of the outer surface of the side surface portions 12 and 13 is 100 times or more the surface roughness (Ra) of the outer surface of the front surface portion 11. It is preferable that it is 200 times or more. Specifically, the surface roughness (Ra) of the outer surfaces of the side surface parts 12 and 13 is preferably 0.5 μm or more, more preferably 0.8 μm or more, and further preferably 1 μm or more. preferable.

　本実施形態では、具体的には、側面部１３のうち、平板部１３ｂの先端部１３ｂ１の表面粗さ（Ｒａ）が前面部１１の外表面の表面粗さ（Ｒａ）よりも大きい。側面部１３の先端部１３ｂ１以外の部分及び屈曲部１３ａの外表面の表面粗さ（Ｒａ）は、前面部１１の外表面の表面粗さ（Ｒａ）と実質的に同様である。同様に、側面部１２のうち、平板部１２ｂの先端部１２ｂ１の表面粗さ（Ｒａ）が前面部１１の外表面の表面粗さ（Ｒａ）よりも大きい。側面部１２の先端部１２ｂ１以外の部分及び屈曲部１２ａの外表面の表面粗さ（Ｒａ）は、前面部１１の外表面の表面粗さ（Ｒａ）と実質的に同様である。 In the present embodiment, specifically, the surface roughness (Ra) of the front end portion 13b1 of the flat plate portion 13b of the side surface portion 13 is larger than the surface roughness (Ra) of the outer surface of the front surface portion 11. The surface roughness (Ra) of the outer surface of the portion of the side surface portion 13 other than the tip portion 13b1 and the bent portion 13a is substantially the same as the surface roughness (Ra) of the outer surface of the front surface portion 11. Similarly, in the side surface portion 12, the surface roughness (Ra) of the front end portion 12 b 1 of the flat plate portion 12 b is larger than the surface roughness (Ra) of the outer surface of the front surface portion 11. The surface roughness (Ra) of the outer surface of the portion other than the tip portion 12b1 of the side surface portion 12 and the bent portion 12a is substantially the same as the surface roughness (Ra) of the outer surface of the front surface portion 11.

　なお、側面部１２，１３の外表面の少なくとも一部の表面粗さ（Ｒａ）を大きくする方法は特に限定されない。例えば、カバーガラス１０を作製する際に、側面部１２，１３が高温であるときに、大きな表面粗さ（Ｒａ）を有する部材（例えばプレス具等）を押し当てることにより表面粗さ（Ｒａ）が大きな部分を形成してもよい。また、化学エッチングや、ブラストなどにより表面粗さ（Ｒａ）が大きな部分を形成してもよい。 In addition, the method of increasing the surface roughness (Ra) of at least a part of the outer surfaces of the side surface parts 12 and 13 is not particularly limited. For example, when the cover glass 10 is produced, when the side surfaces 12 and 13 are at a high temperature, the surface roughness (Ra) is obtained by pressing a member having a large surface roughness (Ra) (for example, a pressing tool). May form a large part. Further, a portion having a large surface roughness (Ra) may be formed by chemical etching or blasting.

　さらに優れたグリップ性を実現する観点からは、図４に示されるように、側面部１２，１３の外表面の少なくとも一部に凹凸を設けてもよい。そうすることにより、側面部１２，１３の外表面の凹凸が設けられた部分の摩擦力が高められるのみならず、操作者の指と側面１２，１３との間のアンカー効果が大きくなる。従って、グリップ性をさらに改善することができる。十分に大きなアンカー効果を得る観点から、側面部１２，１３の垂線方向において、凹凸の頂部と底部との間の距離が５０μｍ以上であることが好ましく、７０μｍ以上であることがより好ましい。側面部１２，１３の垂線方向において、凹凸の頂部と底部との間の距離は、側面部１２，１３の平均厚みの１／２以下であることが好ましい。そうすることにより、側面部１２，１３の剛性の低下を抑制しつつ、グリップ性を改善することができる。 Further, from the viewpoint of realizing excellent grip properties, as shown in FIG. 4, at least part of the outer surfaces of the side surface portions 12 and 13 may be provided with irregularities. By doing so, not only the frictional force of the part provided with the unevenness of the outer surface of the side surfaces 12 and 13 is increased, but also the anchor effect between the operator's finger and the side surfaces 12 and 13 is increased. Accordingly, the grip performance can be further improved. From the viewpoint of obtaining a sufficiently large anchor effect, the distance between the top and bottom of the irregularities is preferably 50 μm or more, and more preferably 70 μm or more in the perpendicular direction of the side surfaces 12 and 13. In the perpendicular direction of the side surface parts 12 and 13, the distance between the top and bottom of the irregularities is preferably ½ or less of the average thickness of the side surface parts 12 and 13. By doing so, grip property can be improved, suppressing the fall of the rigidity of the side parts 12 and 13. FIG.

　側面部１２，１３に設ける凹凸の形状は特に限定されない。側面部１２，１３に設ける凹凸は、線状に設けられていてもよし、角錐状、円錐状、角錐台状、円錐台状、角柱状または円柱状に設けられていてもよい。側面部１２，１３に、形状及び大きさの少なくとも一方が異なる複数種類の凹凸が設けられていてもよい。 The shape of the unevenness provided on the side surfaces 12 and 13 is not particularly limited. The unevenness provided on the side surfaces 12 and 13 may be provided in a linear shape, or may be provided in a pyramid shape, a cone shape, a truncated pyramid shape, a truncated cone shape, a prism shape, or a columnar shape. A plurality of types of irregularities having at least one of shape and size may be provided on the side surfaces 12 and 13.

　なお、図４に示されるように、側面部１２，１３の外表面の少なくとも一部に凹凸を設ける場合は、側面部１２，１３の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前面部１１の外表面の表面粗さ（Ｒａ）よりも大きい必要は必ずしもない。 In addition, as shown in FIG. 4, when unevenness is provided on at least part of the outer surface of the side surface parts 12 and 13, the surface roughness (Ra) of at least part of the outer surface of the side surface parts 12 and 13 is It is not necessarily required to be larger than the surface roughness (Ra) of the outer surface of the front surface portion 11.

１…モバイルディスプレイ
１０…カバーガラス
１１…前面部
１２…第１の側面部
１２ａ…第１の屈曲部
１２ｂ…第１の平板部
１３…第２の側面部
１３ａ…第２の屈曲部
１３ｂ…第２の平板部
１３ｂ１…先端部
２０…モバイルディスプレイ本体
２１…主面
２２，２３…側面 DESCRIPTION OF SYMBOLS 1 ... Mobile display 10 ... Cover glass 11 ... Front part 12 ... 1st side part 12a ... 1st bending part 12b ... 1st flat plate part 13 ... 2nd side part 13a ... 2nd bending part 13b ... 2nd 2 flat plate portions 13b1... Tip portion 20... Mobile display main body 21.

Claims (9)

　モバイルディスプレイの表示部の上に位置する前面部と、
　前記前面部に接続されており、前記モバイルディスプレイの側面に位置する側面部と、を備え、
　前記側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前記前面部の外表面の表面粗さ（Ｒａ）よりも大きい、モバイルディスプレイ用カバーガラス。 A front part located above the display part of the mobile display;
A side part connected to the front part and located on a side of the mobile display;
The cover glass for mobile displays, wherein the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is larger than the surface roughness (Ra) of the outer surface of the front surface portion. 　前記側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前記前面部の外表面の表面粗さ（Ｒａ）の１００倍以上である、請求項１に記載のモバイルディスプレイ用カバーガラス。 The cover glass for a mobile display according to claim 1, wherein the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is 100 times or more of the surface roughness (Ra) of the outer surface of the front surface portion. . 　前記側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、０．５μｍ以上である、請求項１または２に記載のモバイルディスプレイ用カバーガラス。 The mobile display cover glass according to claim 1 or 2, wherein the surface roughness (Ra) of at least a part of the outer surface of the side surface portion is 0.5 µm or more. 　前記側面部の外表面の少なくとも一部に凹凸が設けられている、請求項１～３のいずれか一項に記載のモバイルディスプレイ用カバーガラス。 The mobile display cover glass according to any one of claims 1 to 3, wherein unevenness is provided on at least a part of the outer surface of the side surface portion. 　前記側面部の垂線方向において、凹凸の頂部と底部との間の距離が５０μｍ以上である、請求項４に記載のモバイルディスプレイ用カバーガラス。 The cover glass for a mobile display according to claim 4, wherein a distance between the top and bottom of the irregularities is 50 µm or more in the perpendicular direction of the side surface. 　モバイルディスプレイの表示部の上に位置する前面部と、
　前記前面部に接続されており、前記モバイルディスプレイの側面に位置する側面部と、を備え、
　前記側面部の外表面の少なくとも一部に凹凸が設けられている、モバイルディスプレイ用カバーガラス。 A front part located above the display part of the mobile display;
A side part connected to the front part and located on a side of the mobile display;
A cover glass for a mobile display, wherein unevenness is provided on at least a part of the outer surface of the side surface portion. 　前記側面部の垂線方向において、凹凸の頂部と底部との間の距離が５０μｍ以上である、請求項６に記載のモバイルディスプレイ用カバーガラス。 The cover glass for a mobile display according to claim 6, wherein a distance between the top and bottom of the unevenness is 50 µm or more in the perpendicular direction of the side surface. 　主面に表示部を有するモバイルディスプレイ本体と、
　前記表示部の上に配された前面部と、前記前面部に接続されており、前記モバイルディスプレイ本体の側方に配された側面部とを有するカバーガラスと、
を備え、
　前記側面部の外表面の少なくとも一部の表面粗さ（Ｒａ）が、前記前面部の外表面の表面粗さ（Ｒａ）よりも大きい、モバイルディスプレイ。 A mobile display body having a display on the main surface;
A cover glass having a front surface portion disposed on the display portion and a side surface portion connected to the front surface portion and disposed on a side of the mobile display body;
With
The mobile display, wherein a surface roughness (Ra) of at least a part of an outer surface of the side surface portion is larger than a surface roughness (Ra) of an outer surface of the front surface portion. 　主面に表示部を有するモバイルディスプレイ本体と、
　前記表示部の上に配された前面部と、前記前面部に接続されており、前記モバイルディスプレイ本体の側方に配された側面部とを有するカバーガラスと、
を備え、
　前記側面部の外表面の少なくとも一部に凹凸が設けられている、モバイルディスプレイ。 A mobile display body having a display on the main surface;
A cover glass having a front surface portion disposed on the display portion and a side surface portion connected to the front surface portion and disposed on a side of the mobile display body;
With
A mobile display, wherein unevenness is provided on at least a part of the outer surface of the side surface portion.
PCT/JP2013/078999 2012-12-12 2013-10-25 Mobile-display cover glass, and mobile display Ceased WO2014091829A1 (en)

Applications Claiming Priority (2)

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JP2012-270872 2012-12-12
JP2012270872A JP2014115544A (en) 2012-12-12 2012-12-12 Cover glass for mobile display and mobile display

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US9298220B2 (en) 2014-09-02 2016-03-29 Samsung Electronics Co., Ltd. Curved display and electronic device including the same
JP2016057617A (en) * 2014-09-05 2016-04-21 株式会社半導体エネルギー研究所 Electronic device
KR20170022519A (en) * 2015-08-21 2017-03-02 씨유테크 주식회사 mobile phone glass cover
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JP2014115544A (en) 2014-06-26

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