JP2020003821A - Board with printed layer and display device using the same - Google Patents

Board with printed layer and display device using the same Download PDF

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JP2020003821A
JP2020003821A JP2019175855A JP2019175855A JP2020003821A JP 2020003821 A JP2020003821 A JP 2020003821A JP 2019175855 A JP2019175855 A JP 2019175855A JP 2019175855 A JP2019175855 A JP 2019175855A JP 2020003821 A JP2020003821 A JP 2020003821A
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plate
layer
outer peripheral
printing layer
printing
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JP7003980B2 (en
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小船 伸司
Shinji Kobune
伸司 小船
啓子 小山
Keiko Koyama
啓子 小山
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AGC Inc
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Asahi Glass Co Ltd
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Abstract

To provide a board with a printed layer that hardly causes peeling or a crack, and a display device with the same.SOLUTION: A board with a printed layer comprises a board having a first principal surface, a second principal surface, and end faces, and the printed layer provided at a peripheral edge part of the first principal surface. In the board with the printed layer, an outer peripheral part of the board which corresponds to an outer peripheral part of the printed layer comprises an outer peripheral region having surface roughness different from surface roughness of an inner peripheral part of the board which corresponds to an inner peripheral part of the printed layer corresponding to the outer peripheral part of the board at least partially at the overall periphery, the surface roughness R2 of the outer peripheral region being larger than the surface roughness R1 of the inner peripheral region corresponding to the outer peripheral region of the inner peripheral part of the board.SELECTED DRAWING: Figure 2

Description

本発明は、印刷層付き板およびこれを用いた表示装置に関する。   The present invention relates to a plate with a printing layer and a display device using the same.

従来から、携帯電話等の携帯情報端末やパネルディスプレイに液晶表示デバイスなどの表示装置が用いられている。これらの表示装置は、画像を表示する液晶パネル等の表示パネルと表示パネルに照明光を照射するバックライトなどから構成されている。近年、表示パネル前面には、外光反射を低減するため、また表示パネルを外部衝撃から保護するため、保護部材が配置されている。   2. Description of the Related Art Conventionally, display devices such as liquid crystal display devices have been used for portable information terminals such as mobile phones and panel displays. These display devices include a display panel such as a liquid crystal panel that displays an image, and a backlight that illuminates the display panel with illumination light. 2. Description of the Related Art In recent years, a protective member has been disposed on the front surface of a display panel to reduce external light reflection and to protect the display panel from external impact.

当初、バックライトからの照明光が表示パネル外に漏れることがあり、この漏れ出た照明光が前記表示パネルとこれを収納する筺体の隙間から使用者側に漏れ出ることがあった。この漏れ出た照明光により表示パネルのコントラストが付きにくくなり視認性が悪くなるという課題があった。これを改善するため前記保護部材の表示パネル側表面に、前記表示パネルの表示領域を囲うように印刷層が設けられている。この印刷層は塗料を重ね塗りし、遮光性を高めて形成されている。   Initially, the illumination light from the backlight may leak out of the display panel, and the leaked illumination light may leak to the user side through a gap between the display panel and a housing that houses the display panel. The leaked illumination light has a problem in that the contrast of the display panel is hardly provided and visibility is deteriorated. To improve this, a printed layer is provided on the surface of the protection member on the display panel side so as to surround the display area of the display panel. This printing layer is formed by applying a paint repeatedly to enhance light-shielding properties.

しかしながら、特許文献1などに示される従来の保護部材は、出荷のための梱包・運搬工程、前記表示装置組立工程などで、前記印刷層の剥離や欠け、特に前記印刷層の外周端からの剥離や欠けが生じ不良品となる課題があった。出荷先に保護部材を出荷する際に、傷の発生、埃の付着などを防ぐため、保護部材の両面にフィルムを貼り付けて出荷する。出荷先では保護部材を表示装置に組み込むため、フィルムを除去して組立工程に設置するが、このフィルム除去の際に印刷層の外周端から剥離や欠けが生じ不良品となっていた。   However, the conventional protective member disclosed in Patent Document 1 or the like has a problem in that the printed layer is peeled or chipped in the packing / transporting step for shipping, the display device assembling step, and the like, particularly, peeling from the outer peripheral edge of the printed layer. There was a problem that a chip was generated and a defective product was generated. When shipping the protective member to the shipping destination, a film is attached to both surfaces of the protective member before shipment in order to prevent generation of scratches, adhesion of dust, and the like. At the shipping destination, the film is removed and installed in the assembling process in order to incorporate the protective member into the display device. However, when the film is removed, peeling or chipping occurs from the outer peripheral edge of the printed layer, resulting in a defective product.

特開2011−7830号公報JP 2011-7830A

本発明は、前述した課題に鑑みてなされたものであり、その目的は、剥離や欠けを生じにくい印刷層付き板、およびこれを有する表示装置を提供することにある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a plate with a printed layer which is less likely to peel or chip, and a display device having the same.

本発明の印刷層付き板は、第一の主面と第二の主面と端面とを有する板と、前記第一の主面の周縁部に設けられた印刷層とを備えた印刷層付き板であって、前記第一の主面の周縁部を全周にわたって覆う前記印刷層の外周部分は、その外周端が、前記第一の主面と前記端面との間の接続部を越えて、前記端面にまで達しており、前記印刷層に覆われた前記板の部分の内、前記印刷層の前記外周端から前記印刷層の内周部分に向かって0mm超0.5mm以下入り込んだ領域、及び、前記印刷層の前記内周部分の内周端から前記印刷層の外周部分に向かって0mm超0.5mm以下入り込んだ領域を除く前記板の部分を印刷層密着領域とするとき、前記板の前記印刷層密着領域の表面粗さR2が、100nm≦R2≦1000nmであって、前記表面粗さRは、前記印刷層密着領域を除く前記板の部分の表面粗さRより大きいことを特徴とする。 The plate with a printing layer of the present invention, a plate having a first main surface, a second main surface and an end surface, with a printing layer provided with a printing layer provided on the periphery of the first main surface In the plate, the outer peripheral portion of the printing layer covering the entire peripheral portion of the first main surface, the outer peripheral edge thereof, beyond the connection portion between the first main surface and the end surface , Of the portion of the plate that has reached the end face and that is covered by the print layer, a region where more than 0 mm and 0.5 mm or less have entered from the outer peripheral edge of the print layer toward the inner peripheral portion of the print layer. And, when the portion of the plate except for the region in which more than 0 mm 0.5mm or less entered from the inner peripheral end of the inner peripheral portion of the print layer toward the outer peripheral portion of the print layer as a print layer adhesion region, The surface roughness R2 of the printed layer contact area of the plate is 100 nm ≦ R2 ≦ 1000 nm, and The surface roughness R 2 may be greater than the surface roughness R 1 portion of the plate except the printing layer adhesion area.

本発明によれば、板の印刷層密着領域が、板の主面の外周領域から接続部及び端面の一部にまで拡がっており、この印刷層密着領域の表面粗れが大きい。そのため、板上に形成された印刷層のインクが表面粗れした表面構造に入り込み、印刷層が剥がれにくくなり、欠陥の少ない印刷層付き板を作製できる。   According to the present invention, the printing layer adhesion region of the plate extends from the outer peripheral region of the main surface of the plate to a part of the connection portion and the end surface, and the surface roughness of the printing layer adhesion region is large. Therefore, the ink of the printing layer formed on the plate enters the rough surface structure, the printing layer is hardly peeled off, and a plate with a printing layer with few defects can be manufactured.

また、表面粗さRを100nm≦R2≦1000nmの範囲としたので、印刷層の耐剥離性を向上し、さらに良好な美観性を備えた印刷層付き板を作製できる。 Further, since the surface roughness R 2 it was in the range of 100 nm ≦ R2 ≦ 1000 nm, to improve the peeling resistance of the printed layer can be fabricated more printed layer-plate with good appearance properties.

板の表面粗さが粗い印刷層密着領域は、印刷層の内周縁及び外周縁から0mm超0.5mm以下入り込んでいるため、使用者からは表面粗さの粗い板部分が視認できない。そのため、良好な美観性を維持できる。   Since the printing layer adhesion region where the surface roughness of the plate is rough enters more than 0 mm and 0.5 mm or less from the inner peripheral edge and the outer peripheral edge of the printing layer, the user cannot visually recognize the plate portion having the rough surface roughness. Therefore, good aesthetics can be maintained.

本発明の好ましい形態では、前記第一または第二の主面と前記端面との接続部が、曲率中心を前記板内に有し曲率半径0.05mm以上0.5mm以下の曲面である。   In a preferred embodiment of the present invention, a connecting portion between the first or second main surface and the end surface is a curved surface having a center of curvature in the plate and having a radius of curvature of 0.05 mm or more and 0.5 mm or less.

好ましい形態によれば、外周領域の平面視での面積が同じでも、接続部を曲面とすることで外周領域の実面積を大きくできるため、より剥離しにくい印刷層付き板となる。   According to the preferred embodiment, even if the outer peripheral area has the same area in plan view, since the actual area of the outer peripheral area can be increased by making the connection portion a curved surface, the printed layer-equipped plate is more difficult to peel.

本発明の好ましい形態では、前記第一または第二の主面と前記端面との接続部が、厚み方向断面視で前記主面に相当する辺と前記端面に相当する辺とを接続する線分となり、前記それぞれの辺と前記線分との交点において形成される前記板側の2つの角が鈍角となる。   In a preferred embodiment of the present invention, a connecting portion between the first or second main surface and the end surface is a line segment connecting a side corresponding to the main surface and a side corresponding to the end surface in a sectional view in a thickness direction. And the two angles on the plate side formed at the intersections of the respective sides and the line segments are obtuse angles.

好ましい形態によれば、簡単に接続部を形成でき、外周領域の平面視での面積が同じでも、外周領域の実面積を大きくできるため、より剥離しにくい印刷層付き板となる。   According to the preferred embodiment, the connecting portion can be easily formed, and even if the outer peripheral area has the same area in plan view, the actual area of the outer peripheral area can be increased.

本発明の好ましい形態では、前記2つの角度の合計が270°である。   In a preferred form of the invention, the sum of the two angles is 270 °.

好ましい形態によれば、接続部を形成する線分の両端の角が鈍角となるため取扱いが容易になる。   According to the preferred embodiment, the corners at both ends of the line forming the connection portion are obtuse, so that the handling becomes easy.

本発明の好ましい形態では、前記接続部の幅が、前記板の平面視において端面から0.05mm以上0.5mm以下である。   In a preferred aspect of the present invention, a width of the connection portion is 0.05 mm or more and 0.5 mm or less from an end face in a plan view of the plate.

好ましい形態によれば、接続部が板の外周端付近となるため、使用者から視認した際の視認性を損ねることなく良好な美観性を備えた印刷層付き板となる。   According to the preferred embodiment, since the connection portion is located near the outer peripheral end of the plate, the printed layer-equipped plate has good aesthetics without impairing the visibility when viewed from the user.

本発明の好ましい形態では、前記板はガラスからできている。   In a preferred form of the invention, said plate is made of glass.

好ましい形態によれば、ガラスが高い強度を有し、良好な質感も有するため、高い強度と良好な質感を兼ね備えた印刷層付き板を得られる。   According to a preferred embodiment, the glass has high strength and good texture, so that a plate with a printing layer having both high strength and good texture can be obtained.

本発明の好ましい形態では、前記ガラスは強化ガラスである。   In a preferred form of the invention, said glass is a tempered glass.

好ましい形態によれば、優れた強度と耐擦傷性を有するガラスになるため、安全性や耐久性を有する印刷層付き板となる。   According to a preferred embodiment, since the glass has excellent strength and scratch resistance, it becomes a plate with a printed layer having safety and durability.

本発明の好ましい形態では、表示装置に用いられる。   In a preferred embodiment of the present invention, it is used for a display device.

好ましい形態によれば、本発明の印刷層付き板を表示装置用カバーに用いた際、表示装置に取り付ける際の取扱いなどで、印刷層が剥離・欠損しにくくなるため、製品生産性を向上できる。   According to a preferred embodiment, when the plate with the printed layer of the present invention is used for a cover for a display device, the printed layer is less likely to peel or break during handling when the plate is attached to the display device, so that product productivity can be improved. .

本発明の表示装置は、以上説明した印刷層付き板と、前記印刷層付き板を支えるフレームと、液晶モジュールと、前記印刷層付き板と前記液晶パネルとを貼合する接着層とを備える。   The display device of the present invention includes the above-described plate with a print layer, a frame supporting the plate with a print layer, a liquid crystal module, and an adhesive layer for bonding the plate with a print layer and the liquid crystal panel.

本発明によれば、印刷層が剥離しにくいため、印刷層付き板を備える表示装置の耐久性が向上する。   ADVANTAGE OF THE INVENTION According to this invention, since a printing layer does not peel easily, the durability of the display apparatus provided with the board with a printing layer improves.

本発明によれば、剥離、欠けを生じにくい印刷層付き板、およびこれを有する表示装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the board | substrate with a printing layer which is hard to produce peeling and chipping, and a display device having the same can be provided.

本発明の第一実施形態にかかる印刷層付き板の全体構成を示した(a)斜視図と(b)平面図である。FIG. 1A is a perspective view and FIG. 1B is a plan view showing the entire configuration of a plate with a printing layer according to a first embodiment of the present invention. 図1におけるII−II断面矢視図である。FIG. 2 is a sectional view taken along the line II-II in FIG. 1. (a)および(b)は本発明の第一実施形態の変形例に係る断面図である。(A) And (b) is sectional drawing concerning the modification of 1st embodiment of this invention. 本発明の第二実施形態にかかる印刷層付き板の断面図である。It is a sectional view of a board with a printing layer concerning a second embodiment of the present invention. 本発明の第三実施形態にかかる印刷層付き板の断面図である。It is a sectional view of a board with a printing layer concerning a third embodiment of the present invention. 印刷層付き板の作製手順の説明図である。It is explanatory drawing of the preparation procedure of the board with a printing layer. (a)は印刷層付き板をフレームに配置した構造体、(b)はさらに接着層を貼り付けた構造体、(c)はさらに液晶モジュールを貼合した構造体の模式図を示す。(A) is a schematic view of a structure in which a plate with a printing layer is arranged on a frame, (b) is a structure in which an adhesive layer is further attached, and (c) is a schematic view of a structure in which a liquid crystal module is further attached.

以下、図面に基づき本発明の実施形態について詳細に説明する。なお、本発明は以下に説明の各形態に限定されない。本発明の目的を達成できる範囲での変形、改良などは本発明に含まれるものとする。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments described below. Modifications and improvements as long as the object of the present invention can be achieved are included in the present invention.

「第一実施形態」
[印刷層付き板の構成]
図1は本発明の第一の実施形態にかかる印刷層付き板の全体構成を示した(a)斜視図と(b)平面図である。図2は図1におけるII−II断面矢視図である。本実施形態の印刷層付き板1は、板2と、印刷層3とを備える。
"First embodiment"
[Configuration of plate with printing layer]
FIG. 1 is a perspective view (a) and a plan view (b) showing the entire configuration of a plate with a printing layer according to the first embodiment of the present invention. FIG. 2 is a sectional view taken along the line II-II in FIG. The plate 1 with a print layer according to the present embodiment includes a plate 2 and a print layer 3.

板2は第一の主面21、第二の主面22と端面23とを有する。
印刷層3は板2の第一の主面21周縁部に設けられ、印刷層3は所望の遮光性などの機能が得られるように複数層塗り重ねて形成される。印刷層3以外の板2上の領域が表示領域4となる。印刷層3は板2と非接触の面31、板2と接触する面32、板2の表示領域4側の端面である内周端33および板2の端面23側の端面である外周端34とを有する。
なお、図1(b)の印刷層付き板1の平面図において、板2の重心Gから遠い位置にある、印刷層3の端面側を「外周」、近い位置にある印刷層3の端面側を「内周」と定義する。
The plate 2 has a first main surface 21, a second main surface 22, and an end surface 23.
The printing layer 3 is provided on the periphery of the first main surface 21 of the plate 2, and the printing layer 3 is formed by applying a plurality of layers so as to obtain a desired function such as a light shielding property. The area on the plate 2 other than the print layer 3 is the display area 4. The printing layer 3 has a surface 31 that is not in contact with the plate 2, a surface 32 that is in contact with the plate 2, an inner peripheral end 33 that is an end surface of the plate 2 on the display area 4 side, and an outer peripheral end 34 that is an end surface of the plate 2 that is on the end surface 23 side. And
In addition, in the plan view of the plate 1 with the print layer in FIG. 1B, the end face side of the print layer 3 located far from the center of gravity G of the plate 2 is “outer circumference”, and the end face side of the print layer 3 close thereto. Is defined as “inner circumference”.

表示領域4には、最終製品である表示装置を作製する際に、液晶パネルなどの表示パネルが配置される。表示パネルには駆動のための配線・回路等がある。板2を通して表示パネルを視認した場合、前記配線・回路等が視認でき美観性を損なう。そこで印刷層3を板2の周縁部に設けることにより外周近傍に配置された配線回路等を隠蔽でき美観性を高められる。   A display panel such as a liquid crystal panel is arranged in the display area 4 when a display device as a final product is manufactured. The display panel has wiring and circuits for driving. When the display panel is visually recognized through the plate 2, the wirings, circuits, and the like can be visually recognized, thereby impairing aesthetics. Therefore, by providing the printing layer 3 on the peripheral edge of the plate 2, a wiring circuit or the like arranged near the outer periphery can be hidden, and the appearance can be enhanced.

前記周縁部とは、板2の外周から板2の中央部に向かって、所定の幅を有する帯状領域を意味する。印刷層3は、第一の主面21の周縁全周に設けられていてもよく、周縁一部に設けられていてもよい。印刷層3の幅は同じでもよく、異なっていてもよい。印刷層3の前記厚さは同じでもよく、異なっていてもよい。   The peripheral portion means a band-shaped region having a predetermined width from the outer periphery of the plate 2 toward the center of the plate 2. The printing layer 3 may be provided on the entire periphery of the first main surface 21 or may be provided on a part of the periphery. The width of the printing layer 3 may be the same or different. The thickness of the printing layer 3 may be the same or different.

印刷層3の外周部分3bに対する板の外周部分2bと、板の外周部分2bに対応した印刷層3の内周部分3aに相当する板の内周部分2aは、全周のうち少なくとも一部において異なる表面粗さを有する。全周のうち少なくとも一部において異なる表面粗さを有する板の外周部分2bを外周領域26、対応する板の内周部分2aを内周領域25とし、前者の表面粗さをR2、後者の表面粗さをR1とすると、R2がR1より大きくなる。これにより印刷層3が表面粗さの大きい外周領域26の凹凸にインクの一部が入り込み、印刷層3が板2に強固に固定されるため、印刷層の外周端34に衝撃が加わっても印刷層3の剥離や欠けが生じにくくなる。   The outer peripheral portion 2b of the plate with respect to the outer peripheral portion 3b of the print layer 3 and the inner peripheral portion 2a of the plate corresponding to the inner peripheral portion 3a of the print layer 3 corresponding to the outer peripheral portion 2b of the plate have at least a part of the entire circumference. Has different surface roughness. The outer peripheral portion 2b of the plate having a different surface roughness in at least a part of the entire circumference is defined as an outer peripheral region 26, the inner peripheral portion 2a of the corresponding plate is defined as an inner peripheral region 25, the former has a surface roughness of R2, and the latter has a surface. Assuming that the roughness is R1, R2 is larger than R1. As a result, a part of the ink enters the unevenness of the outer peripheral region 26 where the print layer 3 has a large surface roughness, and the print layer 3 is firmly fixed to the plate 2. Therefore, even if an impact is applied to the outer peripheral end 34 of the print layer. The peeling or chipping of the printing layer 3 is less likely to occur.

ここで、前記「対応する」とは、図1(b)の印刷層付き板1の平面図において、板2の重心Gと外周領域26内の任意の点を結ぶ線分Lを引いたとき、線分Lが内周部分2aと交わる部位が内周領域25となるような位置関係にあることを示す。   Here, the “corresponding” means that a line segment L connecting the center of gravity G of the plate 2 and an arbitrary point in the outer peripheral region 26 is drawn in the plan view of the plate 1 with the printed layer in FIG. , The line L intersects with the inner peripheral portion 2 a in the inner peripheral region 25.

前記表面粗さは、算術平均粗さRa(以下、「表面粗さ」とも記載)であり、JIS B 0601:(2001)(ISO4287:1997)で規定される方法に準拠して測定できる。表面粗さの測定方法として具体的には、表面粗さ・輪郭形状測定機(東京精密社製 商品名:サーフコム1400D−LCD)により試料を測定した。   The surface roughness is an arithmetic average roughness Ra (hereinafter, also referred to as “surface roughness”), and can be measured according to a method defined in JIS B 0601: (2001) (ISO4287: 1997). Specifically, as a method for measuring the surface roughness, a sample was measured using a surface roughness / contour shape measuring instrument (trade name: Surfcom 1400D-LCD, manufactured by Tokyo Seimitsu Co., Ltd.).

外周領域26の表面粗さR2は100nm以上が好ましく、300nm以上がより好ましく、450nm以上がさらに好ましい。この範囲であれば印刷層3のインクの一部が凹凸に入り込み、印刷層3の剥離耐性、欠け耐性が得られる。外周領域26の表面粗さR2は1000nm以下が好ましく、900nm以下がより好ましく、800nm以下がさらに好ましい。この範囲であれば板2の良好な透明度となり美観性に優れる。   The surface roughness R2 of the outer peripheral region 26 is preferably 100 nm or more, more preferably 300 nm or more, and even more preferably 450 nm or more. In this range, a part of the ink of the printing layer 3 enters the unevenness, and the peeling resistance and chipping resistance of the printing layer 3 can be obtained. The surface roughness R2 of the outer peripheral region 26 is preferably 1000 nm or less, more preferably 900 nm or less, and even more preferably 800 nm or less. Within this range, the transparency of the plate 2 will be good and the appearance will be excellent.

印刷層の外周部分3bは、印刷層の外周端34から内周側に向かって0mm超0.5mm以下に相当する仮想線で囲まれた領域であることが好ましい。これにより本発明の印刷層付き板1を表示装置に使用した際に良好な視認性を確保できる。さらに印刷層の外周端34に衝撃が加わっても印刷層3の剥離や欠けを抑制できる効果も有する。印刷層の外周部分3bは、印刷層の外周端34から内周側に向かって0mm超0.4mm以下に相当する仮想線で囲まれた領域がより好ましく、0mm超0.3mm以下に相当する仮想線で囲まれた領域がより好ましい。   The outer peripheral portion 3b of the print layer is preferably a region surrounded by a virtual line corresponding to more than 0 mm and 0.5 mm or less from the outer peripheral end 34 of the print layer toward the inner peripheral side. Thereby, good visibility can be secured when the plate 1 with a printed layer of the present invention is used for a display device. Furthermore, even if an impact is applied to the outer peripheral edge 34 of the printing layer, there is an effect that the peeling or chipping of the printing layer 3 can be suppressed. The outer peripheral portion 3b of the print layer is more preferably a region surrounded by an imaginary line corresponding to more than 0 mm and 0.4 mm or less from the outer peripheral end 34 of the print layer to the inner peripheral side, and more preferably corresponds to more than 0 mm and 0.3 mm or less. A region surrounded by a virtual line is more preferable.

第一の主面21または第二の主面22と端面23との間を接続部24とすると、図3(a)に示すように接続部24を覆うように印刷層3が形成されていることが好ましく、図2に示すように印刷層の外周端34が接続部24上にあるように印刷層3が形成されていることがより好ましく、図3(b)に示すように印刷層の外周端34が板の端面23から0mm超0.5mm以下の第一の主面21または第二の主面22上の領域にあるように印刷層3が形成されていることがさらに好ましい。さらに、本実施形態の印刷層を備えた板1を最終製品である表示装置に組み込む際の寸法安定性を高くするため、印刷層の外周端34全周が板の端面23から0mm超0.5mm以下の第一の主面21または第二の主面22上の領域にあるように印刷層3が形成されていることが特に好ましい。これにより外周領域26が板2の外周端付近となる。印刷層3に用いたインクの一部が外周領域26の表面粗さの大きい部位の凹凸に入り込み、印刷層3が板2に強固に固定されるため、印刷層の外周端34に衝撃が加わっても印刷層3の剥離や欠けが生じにくくなる。   Assuming that a connection portion 24 is provided between the first main surface 21 or the second main surface 22 and the end surface 23, the print layer 3 is formed so as to cover the connection portion 24 as shown in FIG. Preferably, the printed layer 3 is formed so that the outer peripheral edge 34 of the printed layer is on the connection portion 24 as shown in FIG. 2, and the printed layer 3 is formed as shown in FIG. It is further preferable that the printed layer 3 is formed so that the outer peripheral edge 34 is in a region on the first main surface 21 or the second main surface 22 which is more than 0 mm and 0.5 mm or less from the end surface 23 of the plate. Furthermore, in order to increase the dimensional stability when the plate 1 having the print layer of the present embodiment is incorporated into a display device as a final product, the entire outer periphery 34 of the print layer exceeds 0 mm from the end face 23 of the plate. It is particularly preferable that the print layer 3 is formed so as to be in an area of 5 mm or less on the first main surface 21 or the second main surface 22. As a result, the outer peripheral region 26 becomes near the outer peripheral end of the plate 2. Part of the ink used for the print layer 3 enters the unevenness of the portion of the outer peripheral region 26 where the surface roughness is large, and the print layer 3 is firmly fixed to the plate 2, so that an impact is applied to the outer peripheral end 34 of the print layer. However, peeling or chipping of the printing layer 3 is less likely to occur.

印刷層の内周部分3aは、内周端33から外周側に向かって0mm超0.5mm以下に相当する仮想線で囲まれた領域であることが好ましい。これは内周部分3aが前記印刷層の内周端付近で使用者が最も視認しやすい部位であり、外周領域26に比べ内周領域25の表面粗さを小さくすることで良好な美観性を備える。内周領域25の表面粗さR1は0.5nm以上20nm以下が好ましく、1nm以上10nmがより好ましく、1nm以上5nm以下がさらに好ましい。印刷層の内周部分3aは、内周端33から外周側に向かって0mm超0.4mm以下に相当する仮想線で囲まれた領域がより好ましく、0mm超0.3mm以下に相当する仮想線で囲まれた領域がより好ましい。   The inner peripheral portion 3a of the printing layer is preferably a region surrounded by a virtual line corresponding to more than 0 mm and 0.5 mm or less from the inner peripheral end 33 toward the outer peripheral side. This is because the inner peripheral portion 3a is the portion that is most visible to the user near the inner peripheral end of the print layer, and the surface roughness of the inner peripheral region 25 is made smaller than that of the outer peripheral region 26, so that good aesthetics can be obtained. Prepare. The surface roughness R1 of the inner peripheral region 25 is preferably 0.5 nm or more and 20 nm or less, more preferably 1 nm or more and 10 nm, and still more preferably 1 nm or more and 5 nm or less. The inner peripheral portion 3a of the print layer is more preferably a region surrounded by a virtual line corresponding to more than 0 mm and 0.4 mm or less from the inner peripheral end 33 toward the outer peripheral side, and more preferably a virtual line corresponding to more than 0 mm and 0.3 mm or less. The region surrounded by is preferred.

「第二実施形態」
[断面円弧状の接続部24を有する印刷層付き板]
第二実施形態は、第一実施形態と接続部24の形状が異なっており、それ以外は同じである。なお、第二実施形態の説明において、第一実施形態と同一の構造には同一の符号を付して説明を省略する。
"Second embodiment"
[Plate with Printed Layer Having Connecting Portion 24 with Circular Arc Shape]
The second embodiment differs from the first embodiment in the shape of the connection portion 24, and is otherwise the same. In the description of the second embodiment, the same structures as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

図4に第二実施形態にかかる印刷層付き板1の断面図を示す。第二実施形態では、接続部24が断面円弧状となっており、曲率中心を板2内に有し曲率半径0.05mm以上0.5mm以下の曲面となっている。曲率半径は0.05mm以上0.4mm以下が好ましく、0.05mm以上0.3mm以下がより好ましい。これにより出荷時、製品組立時に生じる衝撃が一部に集中せず分散するため、印刷層3の剥離や欠けを抑制できるようになる。   FIG. 4 shows a cross-sectional view of the plate 1 with a printing layer according to the second embodiment. In the second embodiment, the connecting portion 24 has an arc-shaped cross section, has a center of curvature in the plate 2, and has a curved surface with a radius of curvature of 0.05 mm or more and 0.5 mm or less. The radius of curvature is preferably 0.05 mm or more and 0.4 mm or less, more preferably 0.05 mm or more and 0.3 mm or less. Thereby, at the time of shipping, the impact generated at the time of product assembling is dispersed instead of being concentrated at a part, so that peeling or chipping of the printed layer 3 can be suppressed.

印刷層3の一部において、内周領域25の表面粗さR1と外周領域26の表面粗さR2とは、R2>R1の関係を満たす。印刷層3のインクの一部が外周領域26の表面粗さの大きい部位の凹凸に入り込み、板2に強固に固定される。これにより印刷層3の外周端34に衝撃が加わっても印刷層3の剥離や欠けを生じにくくできる。上記効果を得るためには、図4(a)に示すように外周領域26では接続部24を覆うように印刷層3が形成されている形態や、図4(b)に示すように外周領域26では印刷層の外周端34が平面視で端面23と一致するように印刷層3が形成されている形態、印刷層の外周端34全周が平面視で端面23と一致するように印刷層3が形成されている形態、図4(c)に示すように外周領域26では印刷層の外周端34が端面23から0mm超0.5mm以下の第一の主面21または第二の主面22の接続部24にあるように印刷層3が形成されている形態が例示される。さらに、本実施形態の印刷層付き板1を最終製品である表示装置に組み込む際の寸法安定性を高くするため、印刷層の外周端34全周が端面23から0mm超0.5mm以下の第一の主面21または第二の主面22の接続部24にあるような形態であってもよい。   In a part of the print layer 3, the surface roughness R1 of the inner peripheral region 25 and the surface roughness R2 of the outer peripheral region 26 satisfy a relationship of R2> R1. Part of the ink of the print layer 3 enters the unevenness of the outer peripheral region 26 where the surface roughness is large, and is firmly fixed to the plate 2. As a result, even if an impact is applied to the outer peripheral edge 34 of the print layer 3, the print layer 3 is less likely to peel or chip. In order to obtain the above-described effect, a form in which the print layer 3 is formed so as to cover the connection portion 24 in the outer peripheral area 26 as shown in FIG. 4A, or an outer peripheral area as shown in FIG. In 26, the printed layer 3 is formed such that the outer peripheral end 34 of the printed layer coincides with the end face 23 in plan view. In the outer peripheral region 26, as shown in FIG. 4C, the outer peripheral end 34 of the printing layer is more than 0 mm and 0.5 mm or less from the end surface 23, or the first main surface 21 or the second main surface. An example is shown in which the printed layer 3 is formed as in the connection portion 24 of FIG. Further, in order to increase the dimensional stability when the plate 1 with a printed layer of the present embodiment is incorporated into a display device as a final product, the entire outer periphery 34 of the printed layer is more than 0 mm from the end face 23 and 0.5 mm or less. The form may be such that it is at the connection portion 24 of the first main surface 21 or the second main surface 22.

第二実施形態にかかる接続部24は研削、ブラスト処理、エッチングなどにより形成できるが、研削で行うことが好ましい。   The connection portion 24 according to the second embodiment can be formed by grinding, blasting, etching, or the like, but is preferably performed by grinding.

「第三実施形態」
[断面線分状の接続部24を有する印刷層付き板]
第三実施形態は、第一実施形態と接続部24の形状が異なっており、それ以外は同じである。なお、第三実施形態の説明において、第一実施形態と同一の構造には同一の符号を付して説明を省略する。
"Third embodiment"
[Plate with Printed Layer Having Connecting Portion 24 with Line Segment in Section]
The third embodiment is different from the first embodiment in the shape of the connection portion 24, and is otherwise the same. In the description of the third embodiment, the same structures as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

図5に第三実施形態にかかる印刷層付き板1の断面図を示す。第三実施形態では、接続部24は厚さ方向断面視で、第一の主面21または第二の主面22に相当する辺と端面23に相当する辺とを接続する線分となる。第一の主面21または第二の主面22に相当する辺のうち一方と前記線分との交点で形成される板側の角と、端面23に相当する辺と前記線分との交点で形成される板側の角が鈍角となる。これにより出荷時、製品組立時に生じる衝撃が一部に集中することを防げるため、印刷層3の剥離や欠けを抑制できるようになる。さらに前記2つの鈍角の角度の合計が270°となることが好ましい。   FIG. 5 shows a cross-sectional view of the plate 1 with a printing layer according to the third embodiment. In the third embodiment, the connection portion 24 is a line segment connecting the side corresponding to the first main surface 21 or the second main surface 22 and the side corresponding to the end surface 23 in a sectional view in the thickness direction. A plate-side corner formed at the intersection of one of the sides corresponding to the first main surface 21 or the second main surface 22 with the line segment, and the intersection of the side corresponding to the end surface 23 with the line segment Becomes an obtuse angle on the plate side. As a result, it is possible to prevent the impact generated at the time of shipping and product assembling from being concentrated on a part, so that peeling or chipping of the printing layer 3 can be suppressed. Further, it is preferable that the sum of the two obtuse angles is 270 °.

第三実施形態にかかる接続部24の幅は印刷層付き板1の平面視で、端面23から0.05mm以上0.5mm以下が好ましく、0.05mm以上0.4mm以下がより好ましく、0.05mm以上0.3mm以下がさらに好ましい。これにより出荷時、製品組立時に生じる衝撃が一部に集中することを防げるため、印刷層3の剥離や欠けを抑制できるようになる。   The width of the connection portion 24 according to the third embodiment is preferably 0.05 mm or more and 0.5 mm or less, more preferably 0.05 mm or more and 0.4 mm or less, more preferably 0.05 mm or more and 0.4 mm or less from the end face 23 in plan view of the plate 1 with a printing layer. It is more preferably from 05 mm to 0.3 mm. As a result, it is possible to prevent the impact generated at the time of shipping and product assembling from being concentrated on a part, so that peeling or chipping of the printing layer 3 can be suppressed.

内周領域25の表面粗さR1と外周領域26の表面粗さR2がR2>R1の関係を満たす。印刷層3が外周領域26の表面粗さの大きい部位の凹凸に入り込み、板2に強固に固定される。これにより印刷層の外周端34に衝撃が加わっても印刷層3の剥離や欠けを生じにくくできる。このため、図5(a)に示すように外周領域26では接続部24を覆うように印刷層3が形成されていることが好ましく、図5(b)に示すように外周領域26では印刷層の外周端34が平面視で端面23と一致するように印刷層3が形成されていることがより好ましく、印刷層の外周端34全周が平面視で端面23と一致するように印刷層3が形成されていることがさらに好ましく、図5(c)に示すように外周領域26では印刷層の外周端34が端面23から0mm超0.5mm以下の第一の主面21または第二の主面22の接続部24にあるように印刷層3が形成されていることがとりわけ好ましい。さらに、本実施形態の印刷層付き板1を最終製品である表示装置に組み込む際の寸法安定性を高くするため、印刷層の外周端34全周が端面23から0mm超0.5mm以下の第一の主面21または第二の主面22の接続部24にあるように印刷層3が形成されていることが特に好ましい。   The surface roughness R1 of the inner peripheral region 25 and the surface roughness R2 of the outer peripheral region 26 satisfy the relationship of R2> R1. The printing layer 3 penetrates into the unevenness of the portion of the outer peripheral region 26 where the surface roughness is large, and is firmly fixed to the plate 2. Thereby, even if an impact is applied to the outer peripheral edge 34 of the printing layer, the printing layer 3 is less likely to peel or chip. For this reason, it is preferable that the print layer 3 is formed so as to cover the connection portion 24 in the outer peripheral region 26 as shown in FIG. 5A, and the print layer 3 is formed in the outer peripheral region 26 as shown in FIG. It is more preferable that the printed layer 3 is formed such that the outer peripheral end 34 of the printed layer coincides with the end face 23 in plan view, and the entire outer periphery 34 of the printed layer coincides with the end face 23 in plan view. More preferably, as shown in FIG. 5C, in the outer peripheral region 26, the outer peripheral end 34 of the print layer is more than 0 mm and 0.5 mm or less from the end surface 23 to the first main surface 21 or the second main surface 21. It is particularly preferred that the printed layer 3 is formed as in the connection part 24 of the main surface 22. Further, in order to increase the dimensional stability when the plate 1 with a printed layer of the present embodiment is incorporated into a display device as a final product, the entire outer periphery 34 of the printed layer is more than 0 mm from the end face 23 and 0.5 mm or less. It is particularly preferable that the print layer 3 is formed so as to be located at the connection portion 24 of the first main surface 21 or the second main surface 22.

第三実施形態にかかる接続部24は研削、ブラスト処理、エッチングなどにより形成できるが、研削で行うことが好ましい。   The connection portion 24 according to the third embodiment can be formed by grinding, blasting, etching, or the like, but is preferably performed by grinding.

本発明は前述の各形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良などは本発明に含まれるものである。   The present invention is not limited to the above-described embodiments, and includes modifications and improvements as long as the object of the present invention can be achieved.

[変形例]
本発明における板2には、用途に応じて、種々の形状、材料からなるものを使用できる。形状としては、例えば、平坦面のみを有する板のみならず、全体が曲率を有する曲面板や、一部に屈曲部を有する板であってもよい。このような曲面板などは成形時における加工精度によっては多少バラつきがあり、表示装置と組み合わせる際に屈曲部に負荷がかかることが想定される。そのため、本実施形態の印刷層付き板1は負荷がかかっても印刷層が剥離・欠損しにくく非常に有効である。また、板に限らず、フィルム状であっても良い。材料としては、透明であればよく、一般的なガラス、例えば、無機ガラス、ポリカーボネートやアクリル等の有機ガラスを使用でき、またその他の合成樹脂等も使用できる。
[Modification]
The plate 2 in the present invention can be made of various shapes and materials depending on the application. The shape may be, for example, not only a plate having only a flat surface, but also a curved plate having a curvature as a whole, or a plate having a bent portion in part. Such a curved plate or the like slightly varies depending on the processing accuracy at the time of molding, and it is assumed that a load is applied to the bent portion when combined with a display device. Therefore, the plate 1 with a printing layer of the present embodiment is very effective in that the printing layer hardly peels or breaks even when a load is applied. Further, it is not limited to a plate, and may be a film. Any material may be used as long as it is transparent, and general glass, for example, inorganic glass, organic glass such as polycarbonate and acrylic, and other synthetic resins can be used.

無機ガラスを用いる場合には、その厚さは0.5mm以上5mm以下であることが好ましい。これは下限値以上の厚さを備えたガラスであれば高い強度を有し、良好な質感も有するため、高い強度と良好な質感を兼ね備えた印刷層付き板を得られる利点がある。0.7mm以上3mm以下がより好ましく、1mm以上3mm以下がさらに好ましい。さらに無機ガラスでは化学強化処理や物理強化処理がなされていてもよく、化学強化処理がされていることが好ましい。上述のような比較的に薄い無機ガラスを強化処理する場合には、化学強化処理が適切である。
また、有機ガラスや合成樹脂等は、同種・異種問わず重ねられた基材でも良く、その間に各種接着層が挿入されていてもよい。
When using inorganic glass, its thickness is preferably 0.5 mm or more and 5 mm or less. This is because glass having a thickness equal to or greater than the lower limit has high strength and good texture, so that there is an advantage that a plate with a printing layer having both high strength and good texture can be obtained. 0.7 mm or more and 3 mm or less are more preferable, and 1 mm or more and 3 mm or less are still more preferable. Further, the inorganic glass may be subjected to a chemical strengthening treatment or a physical strengthening treatment, and is preferably subjected to a chemical strengthening treatment. When a relatively thin inorganic glass as described above is to be strengthened, a chemical strengthening treatment is appropriate.
Further, the organic glass, the synthetic resin, or the like may be a base material that is overlapped regardless of the same type or different types, and various adhesive layers may be inserted therebetween.

本発明における板2は、第一の主面21または第二の主面22および両面に防眩処理(AG処理)、反射防止処理(AR処理)、耐指紋処理(AFP処理)などの処理層を有していてもよい。印刷層との密着性を向上させるため、プライマー処理やエッチング処理などがされていてもよい。   The plate 2 of the present invention has a first main surface 21 or a second main surface 22 and both surfaces thereof are treated with anti-glare treatment (AG treatment), anti-reflection treatment (AR treatment), anti-fingerprint treatment (AFP treatment) and the like. May be provided. In order to improve the adhesion to the printing layer, a primer treatment or an etching treatment may be performed.

本発明における印刷層3は、用途に応じて種々の印刷方法、インク(印刷材料)により形成されてよい。印刷方法は、例えば、スプレー印刷やスクリーン印刷が利用される。これらの方法により、面積の広い透明板でも良好に印刷できる。特にスプレー印刷では、屈曲部を有する透明板に印刷しやすく、印刷面の表面粗さを調整しやすい。一方スクリーン印刷では、広い透明板に平均厚さが均一になるように所望の印刷パターンを形成しやすい。また、インクは複数使用してよいが、印刷層の密着性の観点から同一のインクであることが好ましい。   The printing layer 3 in the present invention may be formed by various printing methods and inks (printing materials) depending on the application. As a printing method, for example, spray printing or screen printing is used. By these methods, it is possible to print well even on a transparent plate having a large area. In particular, in spray printing, it is easy to print on a transparent plate having a bent portion, and it is easy to adjust the surface roughness of the printed surface. On the other hand, in screen printing, a desired print pattern is easily formed on a wide transparent plate so that the average thickness is uniform. Although a plurality of inks may be used, it is preferable that the same ink be used from the viewpoint of the adhesion of the print layer.

本発明における印刷層3を形成するインクは、無機系でも有機系であってもよい。無機系のインキとしては例えば、例えば、SiO、ZnO、B、Bi、LiO、NaO、及びKOから選択される1種以上、CuO、Al、ZrO、SnO、及びCeOから選択される1種以上、Fe、及びTiOからなる組成物であってもよい。 The ink forming the print layer 3 in the present invention may be inorganic or organic. Examples of the inorganic ink include, for example, one or more selected from SiO 2 , ZnO, B 2 O 3 , Bi 2 O 3 , Li 2 O, Na 2 O, and K 2 O, CuO, Al 2 O 3 , a composition comprising at least one selected from ZrO 2 , SnO 2 , and CeO 2 , Fe 2 O 3 , and TiO 2 .

有機系のインクとしては樹脂を溶剤に溶解した種々の印刷材料を使用できる。例えば、樹脂としては、アクリル樹脂、ウレタン樹脂、エポキシ樹脂、ポリエステル樹脂、ポリアミド樹脂、酢酸ビニル樹脂、フェノール樹脂、オレフィン、エチレン−酢酸ビニル共重合樹脂、ポリビニルアセタール樹脂、天然ゴム、スチレン−ブタジエン共重合体、アクリルニトリル−ブタジエン共重合体、ポリエステルポリオール、ポリエーテルポリウレタンポリエール等の樹脂からなる群から少なくとも1種を選択して使用してよい。また、溶媒としては、水、アルコール類、エステル類、ケトン類、芳香族炭化水素系溶剤、脂肪族炭化水素系溶剤を用いてもよい。例えば、アルコール類としては、イソプロピルアルコール、メタノール、エタノール等を使用でき、エステル類としては酢酸エチル、ケトン類としてはメチルエチルケトンを使用できる。また、芳香族炭化水素系溶剤としては、トルエン、キシレン、ソルベッソ100、ソルベッソ150等を使用でき、脂肪族炭化水素系溶剤としてはヘキサン等を使用できる。なお、これらは例として挙げたものであり、その他、種々の印刷材料を使用できる。前記有機系の印刷材料は、透明板に塗布した後、溶媒を蒸発させて樹脂の層を形成することで印刷層とすることができる。   Various printing materials in which a resin is dissolved in a solvent can be used as the organic ink. For example, as the resin, acrylic resin, urethane resin, epoxy resin, polyester resin, polyamide resin, vinyl acetate resin, phenol resin, olefin, ethylene-vinyl acetate copolymer resin, polyvinyl acetal resin, natural rubber, styrene-butadiene copolymer At least one selected from the group consisting of resins such as coalesce, acrylonitrile-butadiene copolymer, polyester polyol, and polyether polyurethane polyale may be used. Further, as the solvent, water, alcohols, esters, ketones, aromatic hydrocarbon solvents, and aliphatic hydrocarbon solvents may be used. For example, isopropyl alcohol, methanol, ethanol and the like can be used as alcohols, ethyl acetate can be used as esters, and methyl ethyl ketone can be used as ketones. Further, toluene, xylene, Solvesso 100, Solvesso 150 and the like can be used as the aromatic hydrocarbon solvent, and hexane and the like can be used as the aliphatic hydrocarbon solvent. Note that these are given as examples, and various other printing materials can be used. After the organic printing material is applied to a transparent plate, the solvent can be evaporated to form a resin layer to form a printing layer.

印刷層3に用いられるインクは、着色剤が含まれてもよい。着色剤としては、例えば、印刷層3を黒色とする場合はカーボンブラックなどの黒色の着色剤を使用できる。その他、所望の色に応じて適切な色の着色剤を使用できる。   The ink used for the print layer 3 may include a colorant. As the colorant, for example, when the print layer 3 is made black, a black colorant such as carbon black can be used. In addition, a colorant having an appropriate color according to a desired color can be used.

本発明の印刷層付き板1は、例えば、液晶ディスプレイ等のパネルディスプレイやスマートフォンなど携帯機器等のカバーガラスといった表示装置用カバーに使用できる。特に本発明の印刷層付き板1は車載用表示装置用カバーガラスとして適している。車載用表示装置を製造する工程では、印刷層付き板1が梱包・出荷され、表示装置組立メーカーにて印刷層付き板1を載置、組立、搬送などのステップを経ることとなる。これまでは出荷時の振動や表示装置組立時の取扱などにより印刷層3の剥離や欠けが発生しやすく、不良品となるものが多かった。本発明では印刷層3と板2とを強固に固定できるようになり、上記のような不良品を大幅に減少できる。   The plate 1 with a printed layer of the present invention can be used for a display device cover such as a panel display such as a liquid crystal display or a cover glass of a portable device such as a smartphone. In particular, the plate 1 with a printed layer of the present invention is suitable as a cover glass for a vehicle-mounted display device. In the process of manufacturing the vehicle-mounted display device, the plate with printed layer 1 is packed and shipped, and the display device assembling manufacturer goes through steps such as placing, assembling, and transporting the plate with printed layer 1. Until now, peeling or chipping of the printed layer 3 was liable to occur due to vibration at the time of shipment or handling at the time of assembling the display device, and there were many defective products. In the present invention, the printing layer 3 and the plate 2 can be firmly fixed, and the above-mentioned defective products can be greatly reduced.

次に、図6(a)〜図6(c)を用いて、本発明の実施形態に係る印刷層付き板1の製造方法について説明する。なお、図6(a)〜図6(c)において、今まで説明した構成要素と同様の構成要素には、同一の参照符号を付し、その説明を省略または簡略化するものとする。   Next, a method for manufacturing the plate 1 with a printed layer according to the embodiment of the present invention will be described with reference to FIGS. 6A to 6C, the same components as those described so far are denoted by the same reference numerals, and description thereof will be omitted or simplified.

図6(a)は板2の断面図を示す。まず所望の組成を有し所望の厚さを有する板材を最終製品である表示装置に組み込む際の所望の大きさに切断加工し板2を準備する。次に後の工程において剥離しにくい印刷層3を形成するため、第一の主面21、第二の主面22と端面23とのそれぞれの接続部24周辺を研削し、図6(b)に示すような接続部が断面線分状となるような板2とする。これは研削、ブラスト処理、エッチングなどにより形成できるが、研削で行うことが好ましい。一般的に「C面取り」と言われる研削を行うことが好ましいがこれに限定されない。例えば600番の砥石を用い接続部24周辺を研削する。
砥石の回転数や砥石の移動速度なども表面粗さに影響を与えるが、100nm以上1000nm以下であれば特に限定されない。
FIG. 6A shows a sectional view of the plate 2. First, a plate 2 having a desired composition and a desired thickness is cut into a desired size when it is incorporated into a display device as a final product to prepare a plate 2. Next, in order to form the printed layer 3 that is difficult to peel in a later step, the periphery of each connection portion 24 between the first main surface 21, the second main surface 22, and the end surface 23 is ground, and FIG. The plate 2 is such that the connecting portion shown in FIG. This can be formed by grinding, blasting, etching, or the like, but is preferably performed by grinding. Generally, it is preferable to perform grinding called “C chamfering”, but the present invention is not limited to this. For example, the periphery of the connection portion 24 is ground using a No. 600 grindstone.
The number of revolutions of the grindstone, the moving speed of the grindstone, and the like also affect the surface roughness, but are not particularly limited as long as it is 100 nm or more and 1000 nm or less.

この断面線分状の接続部位24が外周領域26となるように、第一の主面21に印刷層3を形成し、図6(c)のような印刷層付き板1を作製する。印刷は、種々の印刷方法が利用できるが、例えば、スクリーン印刷により印刷を行うのが好ましい。スクリーン印刷は孔を用いた印刷であり、印刷対象を問わず、また、多少の屈曲部を有している対象に対しても印刷できるので、板2への印刷に好適に使用できる。   The printing layer 3 is formed on the first main surface 21 so that the connection portion 24 having the line segment in the cross section becomes the outer peripheral region 26, and the plate 1 with the printing layer as shown in FIG. Although various printing methods can be used for printing, it is preferable to perform printing by screen printing, for example. Screen printing is printing using holes, and can be used for printing on the board 2 irrespective of what is to be printed, and can also be performed on an object having some bent portions.

印刷層の外周端34全周が接続部24上にあるように印刷層3を形成することが好ましい。図6(c)に示すように印刷層の外周端34全周が接続部24上にあることが特に好ましい。これは印刷層付き板1を最終製品である表示装置に組み込む際の寸法安定性が高くなるためである。   It is preferable to form the print layer 3 so that the entire outer periphery 34 of the print layer is on the connection portion 24. As shown in FIG. 6C, it is particularly preferable that the entire outer periphery 34 of the print layer is on the connection portion 24. This is because the dimensional stability when the plate 1 with the printing layer is incorporated into a display device as a final product is increased.

以上により印刷層3が接続部24の表面粗さの大きい部位の凹凸に入り込み、印刷層3が板2に強固に固定される。そのため、印刷層3の外周端34に衝撃が加わっても印刷層3の剥離や欠けが生じにくくなる。   As described above, the printing layer 3 penetrates into the unevenness of the connection portion 24 where the surface roughness is large, and the printing layer 3 is firmly fixed to the plate 2. Therefore, even if an impact is applied to the outer peripheral end 34 of the print layer 3, the print layer 3 is less likely to peel or chip.

印刷は所望の回数だけ積層してよく、印刷に用いるインキは、各層異なるものを使用して良い。例えば、観察者が印刷層付き板を表面から板を通して観察したときに、印刷領域を白く見せたい場合には、例えば、まず白印刷を行い、続いて黒印刷を行えばよい。これにより使用者が板を通して印刷層を観察した際、印刷層の背面の視認性に関わる「透け感」を抑制した白色の印刷層を形成できる。   Printing may be performed a desired number of times, and different inks may be used for printing. For example, when an observer wants to make the printed area look white when observing the plate with the printed layer through the plate from the surface, for example, white printing may be performed first, and then black printing may be performed. Thereby, when the user observes the print layer through the plate, a white print layer can be formed in which “transparency” related to the visibility of the back surface of the print layer is suppressed.

上記印刷工程の最後及び途中において、乾燥工程や焼結工程を実施してもよく、これらの工程を実施するタイミングや温度条件などは、使用するインキの特性に応じて適宜選択できる。   A drying step and a sintering step may be carried out at the end and in the middle of the printing step, and the timing and temperature conditions for carrying out these steps can be appropriately selected according to the characteristics of the ink used.

上記各工程の他、板2が無機ガラスである場合には強化処理工程を行ってもよい。また板2の第一の主面21または第二の主面22または両面に防眩処理(AG処理)、反射防止処理(AR処理)、耐指紋処理(AFP処理)などの機能膜処理工程を行ってもよい。   In addition to the above steps, a strengthening treatment step may be performed when the plate 2 is made of inorganic glass. The first main surface 21 or the second main surface 22 or both surfaces of the plate 2 is subjected to functional film processing steps such as anti-glare processing (AG processing), anti-reflection processing (AR processing), and fingerprint resistance processing (AFP processing). May go.

次に、図7(a)〜図7(c)を用いて、本発明の実施形態に係る印刷層付き板を用いた表示装置の製造方法について説明する。なお、図7(a)〜図7(c)において、今まで説明した構成要素と同様の構成要素には、同一の参照符号を付し、その説明を省略または簡略化するものとする。   Next, a method for manufacturing a display device using the plate with a printed layer according to the embodiment of the present invention will be described with reference to FIGS. 7A to 7C. 7A to 7C, the same components as those described so far are denoted by the same reference numerals, and description thereof will be omitted or simplified.

図7(a)は、前記にて作製した印刷層付き板1をフレーム9に配置した構造体の一例の断面図である。フレーム9を印刷層付き板1に接着層などにより固定しても良く、2種類の構造体で構成されたフレーム9で印刷層付き板1を挟みこんで固定してもよく、特に制限はない。フレームの形状、材質も特に制限はなく、適宜設計、選択して使用できる。   FIG. 7A is a cross-sectional view of an example of a structure in which the plate 1 with a printing layer manufactured as described above is arranged on a frame 9. The frame 9 may be fixed to the printed layer-attached plate 1 with an adhesive layer or the like, or may be fixed by sandwiching the printed layer-attached plate 1 with the frame 9 composed of two types of structures. . The shape and material of the frame are not particularly limited, and can be appropriately designed and selected.

図7(b)は、図7(a)において得られた印刷層付き板1とフレーム9の構造体に接着層10を貼り付けた構造体の一例である。接着層10の形状、大きさは、印刷層付き板1の表示領域4に嵌まる大きさが好ましいが、特に形状、大きさに制限はない。   FIG. 7B is an example of a structure in which an adhesive layer 10 is attached to the structure of the plate 1 with the print layer and the frame 9 obtained in FIG. The shape and size of the adhesive layer 10 are preferably large enough to fit in the display area 4 of the plate 1 with a printed layer, but there is no particular limitation on the shape and size.

接着層10は板2と同じく透明であり、板2と接着層10との屈折率差は小さいことが好ましい。
接着層10としては、例えば、液状の硬化性樹脂組成物を硬化して得られる透明樹脂からなる層が挙げられる。硬化性樹脂組成物としては、例えば、光硬化性樹脂組成物、熱硬化性樹脂組成物などが挙げられ、なかでも、硬化性化合物および光重合開始剤を含む光硬化性樹脂組成物が好ましい。硬化性樹脂組成物を、例えば、ダイコータ、ロールコータ等の方法を用いて塗布し、硬化性樹脂組成物膜を形成する。
なお、接着層10は、OCAフィルム(OCAテープ)であってもよい。この場合、印刷層付き板1の第一の主面21側、表示領域4上にOCAフィルムを貼合する。
The adhesive layer 10 is preferably transparent like the plate 2, and the difference in the refractive index between the plate 2 and the adhesive layer 10 is preferably small.
Examples of the adhesive layer 10 include a layer made of a transparent resin obtained by curing a liquid curable resin composition. Examples of the curable resin composition include a photocurable resin composition, a thermosetting resin composition, and the like, and among them, a photocurable resin composition containing a curable compound and a photopolymerization initiator is preferable. The curable resin composition is applied using a method such as a die coater or a roll coater to form a curable resin composition film.
Note that the adhesive layer 10 may be an OCA film (OCA tape). In this case, the OCA film is bonded on the display area 4 on the first main surface 21 side of the plate 1 with the printing layer.

このような接着層10の厚さは、例えば、5〜400μmであり、50〜200μmが好ましい。また、粘着層10の貯蔵せん断弾性率は、例えば、5kPa〜5MPaであり、1MPa〜5MPaが好ましい。   The thickness of such an adhesive layer 10 is, for example, 5 to 400 μm, and preferably 50 to 200 μm. The storage shear modulus of the adhesive layer 10 is, for example, 5 kPa to 5 MPa, and preferably 1 MPa to 5 MPa.

図7(c)は、図7(b)において得られた構造体の接着層10に、液晶モジュール8を貼合した構造体の一例である。以上により、本願発明の印刷層付き板1を備えた表示装置11を作製できる。   FIG. 7C shows an example of a structure in which the liquid crystal module 8 is bonded to the adhesive layer 10 of the structure obtained in FIG. 7B. As described above, the display device 11 including the plate 1 with the printing layer of the present invention can be manufactured.

本願発明の表示装置11を作製するにあたり、組立順序は特に限定されない。例えば、予め印刷層付き板1に接着層10を配置した構造体を準備しておき、フレーム9に配置し、その後、液晶モジュール8を貼合しても良い。   In manufacturing the display device 11 of the present invention, the assembling order is not particularly limited. For example, a structure in which the adhesive layer 10 is arranged on the plate 1 with the print layer may be prepared in advance, arranged on the frame 9, and then the liquid crystal module 8 may be bonded.

また上記構成だけでなく、表示装置はタッチセンサーなどを備えてよい。タッチセンサーを組み込む場合は、印刷層付き板1の第一の主面21側、表示領域4に接着層10を介してタッチセンサーを配置し、それに接着層10を介して液晶モジュール8を配置することとなる。   In addition to the above configuration, the display device may include a touch sensor or the like. When a touch sensor is incorporated, the touch sensor is arranged via the adhesive layer 10 on the first main surface 21 side of the plate with printed layer 1 and the display area 4, and the liquid crystal module 8 is arranged therethrough via the adhesive layer 10. It will be.

次に、本発明の実施例について説明する。本発明は以下の実施例に限定されるものではない。例1は本発明の実施例、例2は比較例である。   Next, examples of the present invention will be described. The present invention is not limited to the following examples. Example 1 is an example of the present invention, and Example 2 is a comparative example.

板2には、ガラス板であって厚さ2mmの主面が四角形の板状ガラス(ドラゴントレイル(登録商標)、旭硝子社製)を用い、以下の手順でそれぞれ印刷層付きガラス板を得た。以下、当該ガラス板の一方の主面を第一の主面(第一面)、他方の主面を第二の主面(第二面)と称する。   For the plate 2, a glass plate having a thickness of 2 mm and a square main surface having a square shape (Dragon Trail (registered trademark), manufactured by Asahi Glass Co., Ltd.) was used. . Hereinafter, one main surface of the glass plate is referred to as a first main surface (first surface), and the other main surface is referred to as a second main surface (second surface).

<例1>
ガラス板に(1)防眩処理、(2)端面の研削処理、(3)化学強化処理およびアルカリ処理、(4)印刷領域の形成、の順に以下の手順で行った。
<Example 1>
The glass plate was subjected to the following procedures in the order of (1) anti-glare treatment, (2) grinding of the end face, (3) chemical strengthening treatment and alkali treatment, and (4) formation of a print area.

(1)防眩処理
ガラス板の第一の主面に以下の手順で、フロスト処理による防眩処理を行った。
(1) Anti-glare treatment An anti-glare treatment by frost treatment was performed on the first main surface of the glass plate in the following procedure.

まず、耐酸性の保護フィルム(以下、単に「保護フィルム」という)を、ガラス板の防眩処理を施さない側の主面(第一面)に貼合した。このガラス板を3質量%のフッ化水素水溶液に3分間浸漬し、ガラス板をエッチングしガラス板の第二面表面に付着した汚れを除去した。続いてガラス板15質量%フッ化水素、15%フッ化カリウムの混合水溶液に3分間浸漬し、ガラス板の第1面にフロスト処理を施した。その後、ガラス板を10質量%フッ化水素水溶液に6分間浸漬することで防眩処理を施し、ヘーズ値を25%に調整した。なお、ヘーズ値は、JIS K 7136によりヘーズメータ(商品名:HZ−V3、スガ試験機社製)を用いて測定した。   First, an acid-resistant protective film (hereinafter, simply referred to as “protective film”) was bonded to the main surface (first surface) of the glass plate on which the anti-glare treatment was not performed. This glass plate was immersed in a 3% by mass aqueous solution of hydrogen fluoride for 3 minutes, and the glass plate was etched to remove dirt attached to the second surface of the glass plate. Subsequently, the glass plate was immersed in a mixed aqueous solution of 15% by mass of hydrogen fluoride and 15% of potassium fluoride for 3 minutes, and the first surface of the glass plate was subjected to a frost treatment. Thereafter, the glass plate was dipped in a 10% by mass aqueous solution of hydrogen fluoride for 6 minutes to perform anti-glare treatment, and the haze value was adjusted to 25%. The haze value was measured using a haze meter (trade name: HZ-V3, manufactured by Suga Test Instruments Co., Ltd.) according to JIS K 7136.

(2) 端面の研削処理
前記防眩処理を施したガラス板を150mm×250mmの大きさに切断した。その後、ガラス板の全周にわたってガラスの端面から0.2mmの寸法でC面取りを行った。面取りは600番の砥石(東京ダイア社製)を用い、砥石の回転数が6500rpm、砥石の移動速度が5000mm/minで処理した。これにより端面の表面粗さが450nmとなった。
(2) Grinding of End Surface The glass plate subjected to the antiglare treatment was cut into a size of 150 mm × 250 mm. Thereafter, C chamfering was performed over the entire circumference of the glass plate at a size of 0.2 mm from the end face of the glass. The chamfering was performed using a No. 600 grindstone (manufactured by Tokyo Dia) at a rotation speed of the grindstone of 6500 rpm and a moving speed of the grindstone of 5000 mm / min. As a result, the surface roughness of the end face became 450 nm.

(3) 化学強化処理およびアルカリ処理
ガラス板に貼合した保護フィルムを除去し、ガラス板を450℃に加熱して溶融させた硝酸カルシウム塩に2時間浸漬した。その後、ガラス板を溶融塩より引き上げ、1時間で室温まで徐冷することで化学強化処理を行った。これにより、表面圧縮応力(CS)が730MPa、応力層の深さ(DOL)が30μmの化学強化されたガラス板を得た。
さらに、このガラス板をアルカリ溶液(商品名:サンウォッシュTL−75、ライオン社製)に4時間浸漬してアルカリ処理を施した。
(3) Chemical strengthening treatment and alkali treatment The protective film attached to the glass plate was removed, and the glass plate was immersed in a calcium nitrate salt heated at 450 ° C. and melted for 2 hours. Thereafter, the glass plate was pulled up from the molten salt, and was gradually cooled to room temperature for 1 hour to perform a chemical strengthening treatment. Thus, a chemically strengthened glass plate having a surface compressive stress (CS) of 730 MPa and a stress layer depth (DOL) of 30 μm was obtained.
Further, this glass plate was immersed in an alkali solution (trade name: Sunwash TL-75, manufactured by Lion Corporation) for 4 hours to perform an alkali treatment.

(4) 印刷層の形成
ガラス板の第一面の外周部の四辺に、2cm幅の黒枠状に印刷し印刷層を形成した。まず、スクリーン印刷機により黒色インク(商品名:GLSHF、帝国インキ社製)を5μmの厚さに塗布した後、150℃で30分間保持して乾燥させた。研削処理を行った端面上に印刷層の外周端が形成されるように、平面視でガラス板の端面から0.1mmの位置となるように印刷を行った。
(4) Formation of Print Layer A print layer was formed by printing on the four sides of the outer peripheral portion of the first surface of the glass plate in a black frame shape having a width of 2 cm. First, black ink (GLSHF, manufactured by Teikoku Ink Co., Ltd.) was applied to a thickness of 5 μm using a screen printing machine, and then dried at 150 ° C. for 30 minutes. Printing was performed so as to be at a position of 0.1 mm from the end face of the glass plate in a plan view so that the outer peripheral end of the print layer was formed on the end face subjected to the grinding treatment.

以上より、図4(c)に示すような印刷層付きガラス板を得た。   From the above, a glass plate with a printed layer as shown in FIG. 4 (c) was obtained.

<例2>
例1とは異なり、(2)端面の研削処理を実施しない以外は、ガラス板に(1)防眩処理、(3)化学強化処理およびアルカリ処理、(4)印刷領域の形成、の順に同様の手順で行った。つまり、例1とは異なり、研削処理せず表面粗さの小さい平坦な部位に印刷層の外周端が形成されている。
<Example 2>
Unlike Example 1, (2) the glass plate was subjected to (1) anti-glare treatment, (3) chemical strengthening treatment and alkali treatment, and (4) formation of a print area in the same order except that the end surface was not ground. The procedure was followed. That is, unlike Example 1, the outer peripheral edge of the print layer is formed on a flat portion having a small surface roughness without grinding.

[評価]
例1および例2で得られた印刷層付きガラス板について、印刷層剥離試験を以下の方法で行った。
[Evaluation]
With respect to the glass plates with a printing layer obtained in Examples 1 and 2, a printing layer peeling test was performed by the following method.

(印刷層剥離試験)
印刷層の耐剥離性について以下のように実施した。印刷層付きガラス板を出荷する際に使用するフィルムを第一面に貼合し、一定の速度で一定の角度を保ちながら前記フィルムを剥がし、印刷層が剥離等生じていないか確認を行った。
フィルムには、PET基材に接着剤としてアクリル系糊剤の貼合されたEC9000ASL(商品名、スミロン社製)を用いた。
フィルムを第一面に貼合する際は、第一面とフィルムの間に空隙が残らない様に注意を払い、ローラーにより0.1MPaの荷重をかけ密着させて試験と行った。
フィルムを剥がす速度は50mm/minで、印刷層付きガラス板とフィルムの成す角が90°となるように試験を行った。
(Printed layer peeling test)
The peel resistance of the printing layer was measured as follows. The film used when shipping the glass plate with the printing layer was bonded to the first surface, the film was peeled off while maintaining a certain angle at a certain speed, and it was confirmed whether the printing layer did not peel off or the like. .
For the film, EC9000ASL (trade name, manufactured by Sumilon Co., Ltd.) in which an acrylic paste was bonded as an adhesive to a PET substrate was used.
When laminating the film on the first surface, care was taken not to leave a gap between the first surface and the film, and the test was carried out by applying a load of 0.1 MPa using a roller to adhere the film.
The test was performed so that the film was peeled at a speed of 50 mm / min and the angle between the glass plate with the print layer and the film was 90 °.

例1および例2に上記フィルムを貼り付けた試験サンプルをそれぞれ10枚ずつ用意し、上記試験を行った。
例2では10枚のうち8枚について印刷層の剥離などが見られた。これらの剥離はほとんど印刷層の外周端を起点に発生していた。一方、例1では印刷層の剥離などが見られたのは10枚のうち1枚で、例2に比べ印刷層の剥離などが抑制された。
Ten test samples each having the film attached to each of Examples 1 and 2 were prepared, and the above test was performed.
In Example 2, peeling of the printed layer was observed on 8 out of 10 sheets. These peelings almost occurred at the outer peripheral edge of the printing layer. On the other hand, in Example 1, one of the ten sheets showed peeling of the printed layer, and the peeling of the printed layer was suppressed as compared with Example 2.

以上のことから、実施例の印刷層付きガラス板は、比較例の印刷層付きガラス板に比べ、優れた耐剥離性を発揮することが分かった。   From the above, it was found that the glass plate with a printed layer of the example exhibited excellent peeling resistance as compared with the glass plate with a printed layer of the comparative example.

本発明は、車載用表示装置やディスプレイなどの保護部材などに利用できる。   INDUSTRIAL APPLICATION This invention can be utilized for protection members, such as an in-vehicle display device and a display.

1 印刷層付き板
2 板
21 第一の主面
22 第二の主面
23 端面
24 接続部
25 内周領域
26 外周領域
3 印刷層
3a 外周部分
3b 内周部分
31 被接触面
32 接触面
33 内周端
34 外周端
4 表示領域
9 フレーム
10 接着層
DESCRIPTION OF SYMBOLS 1 Plate with print layer 2 Plate 21 First main surface 22 Second main surface 23 End surface 24 Connection portion 25 Inner peripheral region 26 Outer peripheral region 3 Print layer 3a Outer peripheral portion 3b Inner peripheral portion 31 Contact surface 32 Contact surface 33 Peripheral end 34 Outer peripheral end 4 Display area 9 Frame 10 Adhesive layer

(1)本発明の印刷層付き板は、第一の主面と第二の主面と端面とを有する板と、前記第一の主面の周縁部に設けられて外周部分と内周部分とを有する印刷層とを備えた印刷層付き板であって、前記印刷層の外周部分に相当する前記板の外周部分は、前記板の全周のうち少なくとも一部において、前記板の外周部分に対応した前記印刷層の内周部分に相当する前記板の内周部分の表面粗さと異なる表面粗さを有する外周領域を備えており、前記外周領域の表面粗さR2が前記板の内周部分の前記外周領域に対応した内周領域の表面粗さR1よりも大きく、
前記板の表面全体が湾曲しているか、前記板の表面の少なくとも一部は屈曲部を備えていることを特徴とする。
本発明によれば、板の印刷層密着領域が、板の主面の外周領域から接続部及び端面の一 部にまで拡がっており、この印刷層密着領域の表面粗れが大きい。そのため、板上に形成された印刷層のインクが表面粗れした表面構造に入り込み、印刷層が剥がれにくくなり、欠陥の少ない印刷層付き板を作製できる。
(2)本発明の好ましい形態では、前記外周領域の表面粗さR2が、100nm≦R2≦1000nmを満たす。
好ましい形態によれば、表面粗さR2をこの範囲とすることで、印刷層の耐剥離性を向上し、さらに良好な美観性を備えた印刷層付き板を作製できる。
(3)本発明の好ましい形態では、前記第一の主面または前記第二の主面と前記端面との間に接続部を有しており、前記接続部が前記外周領域となる。
好ましい形態によれば、表面粗さR2となる外周領域が接続部であるため、使用者から視認した際の視認性を損ねることなく良好な美観性を備えた印刷層付き板を作製できる。
(4)本発明の好ましい形態では、前記印刷層の外周端が前記接続部にある。
好ましい形態によれば、印刷層の外周端が接続部にあり、外周領域上の印刷層が強固に形成されるため、印刷層の外周端を起点とした剥離を低減できる。
(5)本発明の好ましい形態では、前記接続部が、曲率中心を前記板内に有し曲率半径0.05mm以上0.5mm以下の曲面である。
好ましい形態によれば、外周領域の平面視での面積が同じでも、接続部を曲面とすることで外周領域の実面積を大きくできるため、より剥離しにくい印刷層付き板となる。
(6)本発明の好ましい形態では、前記印刷層の外周部分が、印刷層の外周端から内周側に向かって0mm超0.5mm以下に相当する仮想線で囲まれた領域である。
好ましい形態によれば、印刷層の外周部分が印刷層の外周端付近であり、板の外周端付近となる。外周領域も板の外周端付近となるため、使用者から視認した際の視認性を損ねることなく良好な美観性を備えた印刷層付き板となる。
(7)本発明の好ましい形態では、前記第一または第二の主面と前記端面との接続部が、厚み方向断面視で前記主面に相当する辺と前記端面に相当する辺とを接続する線分となり、前記それぞれ1つの辺と前記線分との交点において形成される前記板側の2つの角が鈍角となる。
好ましい形態によれば、簡単に接続部を形成でき、外周領域の平面視での面積が同じでも、外周領域の実面積を大きくできるため、より剥離しにくい印刷層付き板となる。
(8)本発明の好ましい形態では、前記2つの角の角度の合計が270°である。
好ましい形態によれば、接続部を形成する線分の両端の角が鈍角となるため取扱いが容易になる。
(9)本発明の好ましい形態では、前記接続部の幅が、前記板の平面視において端面から0.05mm以上0.5mm以下である。
好ましい形態によれば、接続部が板の外周端付近となるため、使用者から視認した際の視認性を損ねることなく良好な美観性を備えた印刷層付き板となる。
(10)好ましい形態によれば、前記印刷層は外周端を有し、前記印刷層の外周部分は、前記外周端と、前記印刷層の外周端から内周側に向かって0mm超0.5mm以下に相当する仮想線に囲まれた領域である。
好ましい形態によれば、印刷層の外周部分が印刷層の外周端付近であり、板の外周端付近となる。外周領域も板の外周端付近となるため、使用者から視認した際の視認性を損ねることなく良好な美観性を備えた印刷層付き板となる。
(11)好ましい形態では、前記印刷層は内周端を有し、前記印刷層の内周部分は、前記内周端と、前記印刷層の内周端から外周側に向かって0mm超0.5mm以下に相当する仮想線に囲まれた領域である。
好ましい形態によれば、内周領域が印刷層の内周端付近で使用者が最も視認しやすい部位であり、外周領域に比べ表面粗さが小さいため良好な美観性を備えた印刷層付き板となる。
(12)本発明の好ましい形態では、前記板はガラスからできている。
好ましい形態によれば、ガラスが高い強度を有し、良好な質感も有するため、高い強度と良好な質感を兼ね備えた印刷層付き板を得られる。
(13)本発明の好ましい形態では、前記ガラスは強化ガラスである。
好ましい形態によれば、優れた強度と耐擦傷性を有するガラスになるため、安全性や耐久性を有する印刷層付き板となる。
(14)本発明の印刷層付き板は、前記板の少なくとも前記第一の主面と前記第二の主面は、防眩処理(AG処理)、反射防止処理(AR処理)、耐指紋処理(AFP処理)のグループから選ばれる少なくとも1つの処理により形成された処理層を有する。
(15)本発明の好ましい形態では、前記板の少なくとも前記第一の主面と前記第二の主面は、防眩処理(AG処理)、反射防止処理(AR処理)により形成された処理層を有する。
(16)本発明の好ましい形態では、前記板の少なくとも前記第一の主面と前記第二の主面は、反射防止処理(AR処理)により形成された処理層を有する。
(17)本発明の好ましい形態では、前記板の少なくとも前記第一の主面と前記第二の主面は、耐指紋処理(AFP処理)により形成された処理層を有する。
(18)本発明の好ましい形態では、前記印刷層付き板を備える表示装置である。
好ましい形態によれば、本発明の印刷層付き板を表示装置用カバーに用いた際、表示装置に取り付ける際の取扱いなどで、印刷層が剥離・欠損しにくくなるため、製品生産性を向上できる。
(19)本発明の表示装置は、以上説明した印刷層付き板と、前記印刷層付き板を支えるフレームと、液晶モジュールと、前記印刷層付き板と前記液晶モジュールとを貼合する接着層とを備える。
本発明によれば、印刷層が剥離しにくいため、印刷層付き板を備える表示装置の耐久性が向上する。
(1) A plate having a printing layer according to the present invention includes a plate having a first main surface, a second main surface, and an end surface, and an outer peripheral portion and an inner peripheral portion provided at a peripheral portion of the first main surface. And a printing layer having a printing layer comprising: a printing layer having an outer peripheral portion of the plate corresponding to the outer peripheral portion of the printing layer, at least a part of the entire circumference of the plate, the outer peripheral portion of the plate And an outer peripheral region having a surface roughness different from the surface roughness of the inner peripheral portion of the plate corresponding to the inner peripheral portion of the printing layer, wherein the surface roughness R2 of the outer peripheral region corresponds to the inner peripheral portion of the plate. part of the much larger than the inner surface roughness of the circumferential region R1 corresponding to the outer peripheral region,
The whole surface of the plate is curved, or at least a part of the surface of the plate is provided with a bent portion .
According to the present invention, the printing layer adhesion region of the plate extends from the outer peripheral region of the main surface of the plate to a part of the connection portion and the end surface, and the surface roughness of the printing layer adhesion region is large. Therefore, the ink of the printing layer formed on the plate enters the rough surface structure, the printing layer is hardly peeled off, and a plate with a printing layer with few defects can be manufactured.
(2) In a preferred embodiment of the present invention, the surface roughness R2 of the outer peripheral region satisfies 100 nm ≦ R2 ≦ 1000 nm.
According to a preferred embodiment, by setting the surface roughness R2 within this range, the peeling resistance of the printed layer is improved, and a plate with a printed layer having better aesthetics can be manufactured.
(3) In a preferred embodiment of the present invention, a connection portion is provided between the first main surface or the second main surface and the end surface, and the connection portion serves as the outer peripheral region.
According to the preferred embodiment, since the outer peripheral region having the surface roughness R2 is the connection portion, it is possible to produce a plate with a printed layer having good aesthetics without impairing the visibility when viewed from the user.
(4) In a preferred aspect of the present invention, an outer peripheral end of the print layer is at the connection portion.
According to the preferred embodiment, since the outer peripheral edge of the print layer is at the connection portion and the print layer on the outer peripheral region is firmly formed, peeling starting from the outer peripheral edge of the print layer can be reduced.
(5) In a preferred aspect of the present invention, the connection portion is a curved surface having a center of curvature in the plate and having a radius of curvature of 0.05 mm or more and 0.5 mm or less.
According to the preferred embodiment, even if the outer peripheral area has the same area in plan view, since the actual area of the outer peripheral area can be increased by making the connection portion a curved surface, the printed layer-equipped plate is more difficult to peel.
(6) In a preferred embodiment of the present invention, the outer peripheral portion of the print layer is a region surrounded by a virtual line corresponding to more than 0 mm and 0.5 mm or less from the outer peripheral end to the inner peripheral side of the print layer.
According to a preferred embodiment, the outer peripheral portion of the printing layer is near the outer peripheral edge of the printing layer, and is near the outer peripheral edge of the plate. Since the outer peripheral region is also near the outer peripheral end of the plate, the plate with the printed layer has good aesthetics without impairing the visibility when viewed from the user.
(7) In a preferred aspect of the present invention, a connecting portion between the first or second main surface and the end surface connects a side corresponding to the main surface and a side corresponding to the end surface in a cross-sectional view in a thickness direction. And the two corners on the plate side formed at the intersections of the respective one side and the line segments are obtuse angles.
According to the preferred embodiment, the connecting portion can be easily formed, and even if the outer peripheral area has the same area in plan view, the actual area of the outer peripheral area can be increased.
(8) In a preferred aspect of the present invention, the sum of the two angles is 270 °.
According to the preferred embodiment, the corners at both ends of the line forming the connection portion are obtuse, so that the handling becomes easy.
(9) In a preferred aspect of the present invention, a width of the connection portion is 0.05 mm or more and 0.5 mm or less from an end surface in plan view of the plate.
According to the preferred embodiment, since the connection portion is located near the outer peripheral end of the plate, the printed layer-equipped plate has good aesthetics without impairing the visibility when viewed from the user.
(10) According to a preferred mode, the printing layer has an outer peripheral edge, and the outer peripheral portion of the printing layer has the outer peripheral edge and more than 0 mm from the outer peripheral edge of the printing layer toward the inner peripheral side, that is, 0.5 mm or more. This is an area surrounded by virtual lines corresponding to the following.
According to a preferred embodiment, the outer peripheral portion of the printing layer is near the outer peripheral edge of the printing layer, and is near the outer peripheral edge of the plate. Since the outer peripheral region is also near the outer peripheral end of the plate, the plate with the printed layer has good aesthetics without impairing the visibility when viewed from the user.
(11) In a preferred embodiment, the printing layer has an inner peripheral edge, and the inner peripheral portion of the printing layer has an inner peripheral edge and a diameter exceeding 0 mm from the inner peripheral edge of the printing layer toward the outer peripheral side. This is an area surrounded by a virtual line corresponding to 5 mm or less.
According to a preferred embodiment, the inner peripheral region is the portion that is most visible to the user near the inner peripheral end of the print layer, and the plate with the printed layer has good aesthetics because the surface roughness is smaller than the outer peripheral region. It becomes.
(12) In a preferred embodiment of the present invention, the plate is made of glass.
According to a preferred embodiment, the glass has high strength and good texture, so that a plate with a printing layer having both high strength and good texture can be obtained.
(13) In a preferred embodiment of the present invention, the glass is a tempered glass.
According to a preferred embodiment, since the glass has excellent strength and scratch resistance, it becomes a plate with a printed layer having safety and durability.
(14) In the plate with a printing layer according to the present invention, at least the first main surface and the second main surface of the plate are provided with an anti-glare treatment (AG treatment), an anti-reflection treatment (AR treatment), and a fingerprint resistance treatment. It has a processing layer formed by at least one processing selected from the group of (AFP processing).
(15) In a preferred aspect of the present invention, at least the first main surface and the second main surface of the plate are treated layers formed by an anti-glare treatment (AG treatment) and an anti-reflection treatment (AR treatment). Having.
(16) In a preferred aspect of the present invention, at least the first main surface and the second main surface of the plate have a treatment layer formed by an anti-reflection treatment (AR treatment).
(17) In a preferred aspect of the present invention, at least the first main surface and the second main surface of the plate have a processing layer formed by fingerprint resistance processing (AFP processing).
(18) In a preferred aspect of the present invention, the display device includes the plate with a printing layer.
According to a preferred embodiment, when the plate with the printed layer of the present invention is used for a cover for a display device, the printed layer is less likely to peel or break during handling when the plate is attached to the display device, so that product productivity can be improved. .
(19) The display device of the present invention includes the above-described plate with a printed layer, a frame supporting the plate with a printed layer, a liquid crystal module, and an adhesive layer for bonding the plate with a printed layer and the liquid crystal module. Is provided.
ADVANTAGE OF THE INVENTION According to this invention, since a printing layer does not peel easily, the durability of the display apparatus provided with the board with a printing layer improves.

この断面線分状の接続部24が外周領域26となるように、第一の主面21に印刷層3を形成し、図6(c)のような印刷層付き板1を作製する。印刷は、種々の印刷方法が利用できるが、例えば、スクリーン印刷により印刷を行うのが好ましい。スクリーン印刷は孔を用いた印刷であり、印刷対象を問わず、また、多少の屈曲部を有している対象に対しても印刷できるので、板2への印刷に好適に使用できる。 The printed layer 3 is formed on the first main surface 21 so that the connecting portion 24 having the line segment in the cross section becomes the outer peripheral region 26, and the plate 1 with the printed layer as shown in FIG. Although various printing methods can be used for printing, it is preferable to perform printing by screen printing, for example. Screen printing is printing using holes, and can be used for printing on the board 2 irrespective of what is to be printed, and can also be performed on an object having some bent portions.

このような接着層10の厚さは、例えば、5〜400μmであり、50〜200μmが好ましい。また、着層10の貯蔵せん断弾性率は、例えば、5kPa〜5MPaであり、1MPa〜5MPaが好ましい。 The thickness of such an adhesive layer 10 is, for example, 5 to 400 μm, and preferably 50 to 200 μm. Also, the storage shear modulus of the contact adhesive layer 10 is, for example, a 5kPa~5MPa, 1MPa~5MPa are preferred.

1 印刷層付き板
2 板
21 第一の主面
22 第二の主面
23 端面
24 接続部
25 内周領域
26 外周領域
3 印刷層
3a 周部分
3b 周部分
31 被接触面
32 接触面
33 内周端
34 外周端
4 表示領域
9 フレーム
10 接着層
1 printed layer with plate 2 plate 21 first main surface 22 a second main surface 23 end face 24 connection part 25 inner peripheral region 26 the outer peripheral region 3 print layer 3a in the circumferential portion 3b outside circumferential portion 31 to be contact surface 32 contact surface 33 Inner edge 34 Outer edge 4 Display area 9 Frame 10 Adhesive layer

Claims (9)

第一の主面と第二の主面と端面とを有する板と、前記第一の主面の周縁部に設けられた印刷層とを備えた印刷層付き板であって、
前記第一の主面の周縁部を全周にわたって覆う前記印刷層の外周部分は、その外周端が、前記第一の主面と前記端面との間の接続部を越えて、前記端面にまで達しており、
前記印刷層に覆われた前記板の部分の内、前記印刷層の前記外周端から前記印刷層の内周部分に向かって0mm超0.5mm以下入り込んだ領域、及び、前記印刷層の前記内周部分の内周端から前記印刷層の外周部分に向かって0mm超0.5mm以下入り込んだ領域を除く前記板の部分を印刷層密着領域とするとき、
前記板の前記印刷層密着領域の表面粗さR2が、
100nm≦R2≦1000nm
であって、前記表面粗さRは、前記印刷層密着領域を除く前記板の部分の表面粗さRより大きいことを特徴とする印刷層付き板。
A plate having a first main surface, a second main surface, and an end surface, and a plate with a print layer including a print layer provided on a peripheral portion of the first main surface,
The outer peripheral portion of the print layer covering the entire peripheral portion of the first main surface has an outer peripheral end that extends beyond the connection between the first main surface and the end surface to the end surface. Has reached
Of the portion of the plate covered by the printing layer, a region in which more than 0 mm and less than 0.5 mm enter from the outer peripheral edge of the printing layer toward the inner peripheral portion of the printing layer, and When the portion of the plate except for the region of more than 0 mm 0.5mm or less from the inner peripheral end of the peripheral portion toward the outer peripheral portion of the print layer as a print layer adhesion region,
The surface roughness R2 of the printing layer contact area of the plate is:
100 nm ≦ R2 ≦ 1000 nm
A is the surface roughness R 2 are printed layer-plate being larger than the surface roughness R 1 portion of the plate except the printing layer adhesion area.
前記接続部が、曲率中心を前記板内に有し、曲率半径0.05mm以上0.5mm以下の曲面である請求項1に記載の印刷層付き板。   The board with a printing layer according to claim 1, wherein the connection portion has a center of curvature in the board and has a curved surface with a curvature radius of 0.05 mm or more and 0.5 mm or less. 前記接続部が、厚み方向断面視で前記主面に相当する辺と前記端面に相当する辺とを接続する線分となり、前記それぞれの辺と前記線分との交点において形成される前記板側の2つの角が鈍角となる請求項1に記載の印刷層付き板。   The connecting portion is a line segment connecting a side corresponding to the main surface and a side corresponding to the end surface in a thickness direction cross section, and the plate side formed at an intersection of each side and the line segment. 2. The plate with a printed layer according to claim 1, wherein the two corners are obtuse. 前記2つの角度の合計が270°である請求項3に記載の印刷層付き板。   The plate with a printing layer according to claim 3, wherein the sum of the two angles is 270 °. 前記接続部の幅が、前記板の平面視において端面から0.05mm以上0.5mm以下である請求項3または4に記載の印刷層付き板。   The board with a printing layer according to claim 3 or 4, wherein a width of the connection portion is 0.05 mm or more and 0.5 mm or less from an end face in a plan view of the board. 前記板はガラスからなる請求項1〜5のいずれか1項に記載の印刷層付き板。   The board with a printing layer according to any one of claims 1 to 5, wherein the board is made of glass. 前記ガラスは強化ガラスである請求項6に記載の印刷層付き板。   The plate with a printed layer according to claim 6, wherein the glass is a tempered glass. 表示装置に用いられる請求項1〜7のいずれか1項に記載の印刷層付き板。   The plate with a printing layer according to any one of claims 1 to 7, which is used for a display device. 請求項8に記載の印刷層付き板と、前記印刷層付き板を支えるフレームと、液晶モジュールと、前記印刷層付き板と前記液晶パネルとを貼合する接着層とを有する、表示装置。   A display device, comprising: the plate with a print layer according to claim 8, a frame supporting the plate with a print layer, a liquid crystal module, and an adhesive layer for bonding the plate with the print layer and the liquid crystal panel.
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US20110013346A1 (en) * 2009-07-17 2011-01-20 Jun-Hwan Ju Display apparatus
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