JP2003150065A - Filter integrated type picture display device - Google Patents
Filter integrated type picture display deviceInfo
- Publication number
- JP2003150065A JP2003150065A JP2001349765A JP2001349765A JP2003150065A JP 2003150065 A JP2003150065 A JP 2003150065A JP 2001349765 A JP2001349765 A JP 2001349765A JP 2001349765 A JP2001349765 A JP 2001349765A JP 2003150065 A JP2003150065 A JP 2003150065A
- Authority
- JP
- Japan
- Prior art keywords
- display device
- image display
- transparent adhesive
- adhesive material
- electromagnetic wave
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、視認性、耐衝撃性
に優れ、フィルター機能を一体化した画像表示装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device which is excellent in visibility and impact resistance and has an integrated filter function.
【０００２】[0002]
【従来の技術】プラズマ発光表示装置（ＰＤＰ）等の画
像表示装置の表面に何らかの衝撃が加わった場合にその
衝撃が画像表示パネルに伝わって表示パネルが破損しな
いように保護パネルが組み合わされている。この保護パ
ネルには、画像の視認性改良、色合い調整、電磁波カッ
ト、リモコン誤動作防止のために反射防止層、色調補正
層、電磁波シールド層、近赤外カット層が施されフィル
ターとも呼ばれている。2. Description of the Related Art A protective panel is combined with an image display device such as a plasma light-emitting display device (PDP) so that when the surface receives an impact, the impact is transmitted to the image display panel and the display panel is not damaged. . This protective panel is provided with an antireflection layer, a color correction layer, an electromagnetic wave shield layer, and a near-infrared cut layer for improving the visibility of the image, adjusting the color tone, cutting electromagnetic waves, and preventing the remote control from malfunctioning, and is also called a filter. .
【０００３】従来、表示パネルと保護パネルとの間には
一定厚みの空気層を形成し、保護パネルと空気層で衝撃
を分散・吸収させて表示パネルの破損を防止する方法が
一般的である。さらに、より耐衝撃性の高い強化ガラス
板、ポリカーボネート（ＰＣ）板あるいはアクリル板を
保護パネルに使用することによって保護パネル自身の破
損も防ぎ画像表示装置の耐久性を向上してきた。Conventionally, a method of forming an air layer having a certain thickness between the display panel and the protection panel and dispersing and absorbing the shock between the protection panel and the air layer to prevent the display panel from being damaged is generally used. . Further, by using a tempered glass plate, a polycarbonate (PC) plate or an acrylic plate having higher impact resistance as the protective panel, the protective panel itself is prevented from being damaged and the durability of the image display device has been improved.
【０００４】ところが上記のような表示パネルと保護パ
ネルの間に空気層を形成した構成では、空気層と保護パ
ネルとの屈折率差に起因する光の反射が大きく、二重写
りやコントラストの低下を生じることから、良好な視認
性を得るために反射防止層が複数層必要となる。また、
表示パネルが破損しないための一定厚みの空気層が必要
なことにより、画像表示装置のコストダウンや薄型化が
規制されるという問題点があった。However, in the structure in which the air layer is formed between the display panel and the protective panel as described above, the reflection of light due to the difference in the refractive index between the air layer and the protective panel is large, and the double reflection and the decrease in contrast are caused. Therefore, a plurality of antireflection layers are required to obtain good visibility. Also,
Since an air layer having a constant thickness is required to prevent the display panel from being damaged, there has been a problem that cost reduction and thinning of the image display device are restricted.
【０００５】これらの点に鑑み、表示パネルと保護パネ
ルの間に液状樹脂を注入した後、室温で硬化させる方
法、ホットメルト接着剤で加熱溶融して接着処理する方
法が提案されている。しかしながら、室温硬化型液状樹
脂では気泡や硬化収縮による表示パネルの歪みが生じや
すい、ホットメルト接着剤では加熱による表示パネルの
機能低下を招きやすいという問題がある。また、電磁波
シールド材を組み合わせる場合、市販の硬い粘着シート
では、電磁波シールド材の導電性メッシュの表面凹凸に
より気泡が生じて視認性を低下させたり、十分な耐衝撃
性が得られず、高価な表示パネルが破損するといった問
題があった。In view of these points, there have been proposed a method of injecting a liquid resin between a display panel and a protective panel and then curing it at room temperature, and a method of heating and melting with a hot-melt adhesive to perform an adhesion treatment. However, the room temperature curable liquid resin has a problem that the display panel is likely to be distorted due to air bubbles and curing shrinkage, and the hot melt adhesive has a problem that the function of the display panel is likely to be deteriorated by heating. Further, in the case of combining an electromagnetic wave shielding material, in a commercially available hard adhesive sheet, bubbles are generated due to the surface irregularities of the conductive mesh of the electromagnetic wave shielding material to reduce the visibility, or sufficient impact resistance cannot be obtained, which is expensive. There was a problem that the display panel was damaged.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、前記問題点
を考慮してなされたもので、視認性に優れ、かつ耐衝撃
性に優れたフィルター一体型画像表示装置を提供するこ
とを目的とする。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a filter-integrated image display device having excellent visibility and impact resistance. To do.
【０００７】[0007]
【課題を解決するための手段】本発明者は、視認性及び
耐衝撃性に優れたフィルター一体型画像表示装置を得る
ため種々検討した結果、画像表示パネルの表示面基板と
電磁波シールド材と光学フィルターと透明粘着材とを用
いて一体化させることにより、本発明に到達した。ま
た、電磁波シールド材の電極の取り出し部を確保するた
めの好適な配置を見出した。The present inventor has conducted various studies to obtain a filter-integrated image display device having excellent visibility and impact resistance. As a result, the display surface substrate of an image display panel, an electromagnetic wave shielding material, and an optical element have been investigated. The present invention has been reached by using a filter and a transparent adhesive to integrate them. Further, they have found a suitable arrangement for securing the electrode take-out portion of the electromagnetic wave shield material.
【０００８】(1) 本発明は、画像表示パネルの表示面基
板に電磁波シールド材を積層し、電磁波シールド材面と
光学フィルターとを透明粘着材を用いて密着一体化した
ことを特徴とする画像表示装置である。
(2) 好ましくは、電磁波シールド材の、電極が設けられ
る周縁部を残して、電磁波シールド材面と光学フィルタ
ーとを透明粘着材を用いて密着一体化したことを特徴と
する。
(3) 前記電磁波シールド材は、透明フィルムの表面に導
電性メッシュが形成され、透明フィルムの裏面に粘着加
工が施されてなるものにおいて、極めて有効である。
(4) 前記透明粘着材の厚みと周波数分散で測定した動的
粘弾性特性の関係が下記式の範囲にあるものが好まし
い。
Ｋ＝ｄ×２πｆ×√（ρ／３Ｇ’）≧０．５
ｄ ：透明粘着材の厚み（ｍ）
ｆ ：ｔａｎδピーク値の周波数（Ｈｚ）
ρ ：透明粘着材の密度（ｋｇ／ｍ3 ）
Ｇ’：ｔａｎδピーク値の貯蔵弾性率（Ｐａ）(1) The present invention is characterized in that an electromagnetic wave shielding material is laminated on a display surface substrate of an image display panel, and the electromagnetic wave shielding material surface and an optical filter are adhered and integrated by using a transparent adhesive material. It is a display device. (2) Preferably, the surface of the electromagnetic wave shielding material and the optical filter are adhered and integrated with each other using a transparent adhesive material, leaving the peripheral portion of the electromagnetic wave shielding material on which the electrode is provided. (3) The electromagnetic wave shielding material is extremely effective when the conductive mesh is formed on the surface of the transparent film and the back surface of the transparent film is subjected to adhesive processing. (4) It is preferable that the relationship between the thickness of the transparent adhesive material and the dynamic viscoelastic property measured by frequency dispersion is within the range of the following formula. K = d × 2πf × √ (ρ / 3G ′) ≧ 0.5 d: Thickness of transparent adhesive material (m) f: Frequency of tan δ peak value (Hz) ρ: Density of transparent adhesive material (kg / m 3 ) G ′: storage modulus of tan δ peak value (Pa)
【０００９】(5) 前記透明粘着材が下記（ａ）及び
（ｂ）の弾性率の範囲にあるものが好ましい。
（ａ）測定温度２０℃、周波数１Ｈｚでの貯蔵弾性率
Ｇ’（１Ｈｚ）が５×１０ 3 〜５×１０5 Ｐａ。
（ｂ）基準温度２０℃、周波数１０-7Ｈｚでの貯蔵弾性
率Ｇ’（１０-7Ｈｚ）が５×１０1 〜５×１０3 Ｐａ。(5) The transparent adhesive has the following (a) and
Those having an elastic modulus in the range of (b) are preferable.
(A) Storage elastic modulus at a measurement temperature of 20 ° C. and a frequency of 1 Hz
G '(1Hz) is 5 x 10 3 ~ 5 x 10Five Pa.
(B) Reference temperature 20 ° C, frequency 10-7Storage elasticity in Hz
Rate G '(10-7Hz) is 5 × 101 ~ 5 x 103 Pa.
【００１０】(6) 前記透明粘着材がアクリル系樹脂、エ
ポキシ系樹脂、ウレタン系樹脂、シリコーン系樹脂、ゴ
ム系樹脂のいずれかからなるシート状であるものが好ま
しい。
(7) 前記光学フィルターは、反射防止、近赤外線カッ
ト、色調補正、表面硬度向上のいずれか一つ以上の機能
を有するものが好ましい。
(8) 前記光学フィルターは、ポリエステル系樹脂、アク
リル系樹脂、ポリカーボネート系樹脂、脂環式ポリオレ
フィン系樹脂及びガラスの少なくとも１つ以上の透明基
材を用いた厚さ０．１ｍｍ〜５ｍｍのものであるものが
好ましい。(6) It is preferable that the transparent adhesive material is in the form of a sheet made of any one of acrylic resin, epoxy resin, urethane resin, silicone resin, and rubber resin. (7) The optical filter preferably has one or more functions of antireflection, near infrared ray cut, color tone correction, and surface hardness improvement. (8) The optical filter has a thickness of 0.1 mm to 5 mm using at least one transparent base material of polyester resin, acrylic resin, polycarbonate resin, alicyclic polyolefin resin, and glass. Some are preferred.
【００１１】(9) 請求項１〜８のいずれかに記載の画像
表示装置に用いられる積層板であって、シート状をなす
透明粘着材の一方の面を光学フィルターに圧着し、透明
粘着材の他方の面に離型フィルムを設けてなる画像表示
装置用積層板である。
(10)請求項１〜８のいずれかに記載の画像表示装置に用
いられる、シート状をなす透明粘着材であって、該透明
粘着材の両面に離型フィルムを設けてなり、画像表示装
置の電磁波シールド材と光学フィルターとの間に介在さ
せて密着一体化させて使用する画像表示装置に用いる透
明粘着シートである。(9) A transparent plate for use in the image display device according to any one of claims 1 to 8, wherein one surface of a sheet-shaped transparent adhesive material is pressure-bonded to an optical filter. Is a laminated plate for an image display device, which is provided with a release film on the other surface. (10) A sheet-shaped transparent adhesive material used in the image display device according to any one of claims 1 to 8, wherein release films are provided on both surfaces of the transparent adhesive material. The transparent pressure-sensitive adhesive sheet used in the image display device, wherein the transparent pressure-sensitive adhesive sheet is interposed between the electromagnetic wave shielding material and the optical filter to be brought into close contact and integrated therewith.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１（ａ）は、本発明をプ
ラズマ発光表示装置（ＰＤＰ）として構成した画像表示
装置における画像表示パネル１の構造を模式的に示す縦
断面図、図１（ｂ）は正面図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a vertical sectional view schematically showing the structure of an image display panel 1 in an image display device in which the present invention is configured as a plasma light emitting display device (PDP), and FIG. 1B is a front view.
【００１３】画像表示パネル１の表示面基板２に電磁波
シールド材３が積層されている。電磁波シールド材３の
周縁部（４辺）を枠状に残して、光学フィルター５が透
明粘着材４を介して密着一体化されている。透明粘着材
４及び光学フィルター５が形成されていない領域である
電磁波シールド材３の周縁部には、電極６が設けられて
いる。表示面基板２の表面は通常、ガラス板により形成
されるが、特に限定されるものではない。An electromagnetic wave shield material 3 is laminated on the display surface substrate 2 of the image display panel 1. The optical filter 5 is closely adhered and integrated with the transparent adhesive material 4 while leaving the peripheral portions (4 sides) of the electromagnetic wave shield material 3 in a frame shape. An electrode 6 is provided on the peripheral portion of the electromagnetic wave shield material 3, which is an area where the transparent adhesive material 4 and the optical filter 5 are not formed. The surface of the display surface substrate 2 is usually formed of a glass plate, but is not particularly limited.
【００１４】電磁波シールド材３は、導電性物質を蒸着
等により施したもの、その他公知の透明性の良好なもの
を使用でき、その構成は特に限定されないが、透明フィ
ルムの表面に導電性メッシュが形成され、その裏面に粘
着加工が施されてなるものが好適に用いられる。透明粘
着材４は一層で形成するか、あるいは複数層に形成され
ていてもよい。光学フィルター５は、光学的作用を有す
るもので、例えば、反射防止、近赤外線カット、色調補
正、表面硬度向上、のいずれか一つ以上の機能を有する
ものが用いられる。光学フィルターは、ポリエステル系
樹脂、アクリル系樹脂、ポリカーボネート系樹脂、脂環
式ポリオレフィン系樹脂及びガラスの少なくとも１つ以
上の透明基材を用いた厚さ０．１ｍｍ〜５ｍｍのものが
好ましく用いられる。複数層を有するものでもよい。ガ
スバリヤー等の機能を付加していてもよい。電極６の形
状及び材質は特に限定されないが、透明粘着材４及び光
学フィルター５が形成されていない領域である電磁波シ
ールド材３の周縁部に沿って、表面に枠状に形成するの
が好ましい。As the electromagnetic wave shield material 3, a material obtained by depositing a conductive material by vapor deposition or the like or any other known material having good transparency can be used. The structure is not particularly limited, but a conductive mesh is formed on the surface of the transparent film. What is formed and whose back surface is subjected to an adhesive treatment is preferably used. The transparent adhesive material 4 may be formed of a single layer or a plurality of layers. The optical filter 5 has an optical function, and for example, one having at least one function of antireflection, near infrared ray cut, color tone correction, and surface hardness improvement is used. The optical filter preferably has a thickness of 0.1 mm to 5 mm and uses at least one transparent base material of polyester resin, acrylic resin, polycarbonate resin, alicyclic polyolefin resin, and glass. It may have a plurality of layers. A function such as a gas barrier may be added. The shape and material of the electrode 6 are not particularly limited, but it is preferable to form the electrode 6 in a frame shape along the peripheral edge of the electromagnetic wave shield material 3 which is a region where the transparent adhesive material 4 and the optical filter 5 are not formed.
【００１５】透明粘着材４は、粘弾性を有する比較的軟
質な素材からなる。該透明粘着材４の厚みと周波数分散
で測定した動的粘弾性特性の関係は下記式の範囲にある
ものが好ましい。The transparent adhesive material 4 is made of a relatively soft material having viscoelasticity. The relationship between the thickness of the transparent adhesive material 4 and the dynamic viscoelastic property measured by frequency dispersion is preferably within the range of the following formula.
【００１６】 Ｋ＝ｄ×２πｆ×√（ρ／３Ｇ’）≧０．５ ｄ ：透明粘着材の厚み（ｍ） ｆ ：ｔａｎδピーク値の周波数（Ｈｚ） ρ ：透明粘着材の密度（ｋｇ／ｍ3 ） Ｇ’：ｔａｎδピーク値の貯蔵弾性率（Ｐａ）K = d × 2πf × √ (ρ / 3G ′) ≧ 0.5 d: thickness of transparent adhesive material (m) f: frequency of tan δ peak value (Hz) ρ: density of transparent adhesive material (kg / m 3 ) G ′: storage modulus of tan δ peak value (Pa)
【００１７】上記のｔａｎδは、後述する粘弾性測定装
置で測定して得られたマスターカーブから読みとった。
上記式により求められるＫ値が≧０．５となる透明粘着
材４を用いて本発明を構成することにより、優れた耐衝
撃性を有する画像表示装置が得られる。The above tan δ was read from a master curve obtained by measuring with a viscoelasticity measuring device described later.
By configuring the present invention using the transparent adhesive material 4 having a K value of ≧ 0.5 obtained by the above formula, an image display device having excellent impact resistance can be obtained.
【００１８】また、透明粘着材４は、下記（ａ）及び
（ｂ）の弾性率の範囲にあるものが好ましい。
（ａ）測定温度２０℃、周波数１Ｈｚでの貯蔵弾性率
Ｇ’（１Ｈｚ）が５×１０ 3 〜５×１０5 Ｐａ。
（ｂ）基準温度２０℃、周波数１０-7Ｈｚでの貯蔵弾性
率Ｇ’（１０-7Ｈｚ）が５×１０1 〜５×１０3 Ｐａ。Further, the transparent adhesive material 4 has the following (a) and
Those having an elastic modulus in the range of (b) are preferable.
(A) Storage elastic modulus at a measurement temperature of 20 ° C. and a frequency of 1 Hz
G '(1Hz) is 5 x 10 3 ~ 5 x 10Five Pa.
(B) Reference temperature 20 ° C, frequency 10-7Storage elasticity in Hz
Rate G '(10-7Hz) is 5 × 101 ~ 5 x 103 Pa.
【００１９】上記の弾性率は、レオメトリックス社製の
粘弾性測定装置ダイナミックアナライザーＲＤＡＩＩを
用いて以下の条件で測定する。
・温度：２０〜１５０℃
・角振動数：ω＝０．００５〜５００ｒａｄ／ｓｅｃ
・パラレルプレート：２５ｍｍφ
・歪み量：３％The above-mentioned elastic modulus is measured under the following conditions using a viscoelasticity measuring apparatus Dynamic Analyzer RDAII manufactured by Rheometrics.・ Temperature: 20 to 150 ° C. ・ Angular frequency: ω = 0.005 to 500 rad / sec ・ Parallel plate: 25 mmφ ・ Strain amount: 3%
【００２０】上記のＲＤＡＩＩで２０℃を基準温度とし
て温度−時間換算のマスターカーブを作成し、周波数ｆ
値はｆ（Ｈｚ）＝ω／２πにより算出し、それぞれ貯蔵
弾性率Ｇ’、損失弾性率Ｇ”及びＧ”／Ｇ’＝ｔａｎδ
を読みとる。With the above RDAII, a temperature-time converted master curve was prepared with 20 ° C. as a reference temperature, and the frequency f
The values are calculated by f (Hz) = ω / 2π, and storage elastic modulus G ′, loss elastic modulus G ″ and G ″ / G ′ = tan δ, respectively.
Read.
【００２１】上記（ａ）について、周波数１Ｈｚでの貯
蔵弾性率Ｇ’（１Ｈｚ）が５×１０ 3 Ｐａ未満である
と、透明粘着材を密着処理した後の形状保持が難しくな
る場合があり、５×１０5 Ｐａを超えると、界面の濡れ
性が劣り、充分な接着力を確保できない場合がある。Regarding (a) above, storage at a frequency of 1 Hz
Storage elastic modulus G '(1Hz) is 5 x 10 3 Less than Pa
And, it is difficult to maintain the shape after the transparent adhesive material is adhered.
May be 5 x 10Five If it exceeds Pa, wetting of the interface
In some cases, the adhesiveness is poor and sufficient adhesive strength cannot be secured.
【００２２】また、上記（ｂ）について、周波数１０-7
Ｈｚでの貯蔵弾性率Ｇ’（１０-7Ｈｚ）が５×１０1 Ｐ
ａ未満であると、流動しすぎて密着処理した後、透明粘
着材がはみ出したり、パネルがずれるという問題を生じ
る場合があり、５×１０3 Ｐａを超えると、密着処理
時、硬すぎて透明粘着材の僅かな厚みの凹凸により、凹
部に気泡が発生するという問題を生じる場合がある。上
記のような理由から（ａ）（ｂ）の範囲とすることが好
ましい。Regarding (b) above, a frequency of 10 −7
Storage modulus G '(10 −7 Hz) at 5 Hz is 5 × 10 1 P
If it is less than a, the transparent adhesive may stick out or the panel may shift after the adhesion treatment due to excessive flow, and if it exceeds 5 × 10 3 Pa, it is too hard during the adhesion treatment to be transparent. The unevenness of the adhesive material having a slight thickness may cause a problem that bubbles are generated in the recess. For the above reasons, it is preferable to set the range to (a) and (b).
【００２３】透明粘着材４は、例えば、アクリル系樹
脂、エポキシ系樹脂、ウレタン系樹脂、シリコーン系樹
脂、ゴム系樹脂のいずれかから選択することができる。
耐候性及び透明性の良いアクリル系樹脂を用いるのが好
ましい。アクリル系樹脂としては、エチレンとα，β不
飽和カルボン酸を含有した（メタ）アクリル酸エステル
共重合体に金属化合物等を添加して金属イオン架橋した
アイオノマー樹脂がある。金属化合物としては、亜鉛イ
オン、ナトリウムイオン等を有するアセチルアセトン金
属錯体、金属酸化物、脂肪酸金属塩等を用いる。アイオ
ノマー樹脂は既にイオン架橋したものを使用してもよい
が、製造時に共重合体へ金属化合物を添加してイオン架
橋させたものの方が好ましい。また、透明粘着材４は、
シート状である感圧性のものが製造しやすい点等から好
ましい。The transparent adhesive material 4 can be selected from any of acrylic resin, epoxy resin, urethane resin, silicone resin, and rubber resin, for example.
It is preferable to use an acrylic resin having good weather resistance and transparency. As the acrylic resin, there is an ionomer resin obtained by adding a metal compound or the like to a (meth) acrylic acid ester copolymer containing ethylene and an α, β unsaturated carboxylic acid and performing metal ion crosslinking. As the metal compound, acetylacetone metal complex having zinc ion, sodium ion, etc., metal oxide, fatty acid metal salt, etc. are used. The ionomer resin may be one that has already been ionically crosslinked, but it is preferable to use an ionomer resin that is ionically crosslinked by adding a metal compound to the copolymer during production. In addition, the transparent adhesive 4
A sheet-shaped pressure-sensitive material is preferable because it is easy to manufacture.
【００２４】図２は、本発明に係る画像表示装置用積層
板の構成例を示すものである。この画像表示装置用積層
板は、上記したような画像表示装置に用いられるもの
で、シート状をなす上記の透明粘着材４の一方の面が光
学フィルター５に圧着積層されている。透明粘着材４の
他方の面には、ポリエチレンテレフタレートその他の離
型機能を有する離型フィルム４０が貼着されている。離
型フィルム４０を剥がしてその面を、画像表示装置に用
いられる電磁波シールド材や各種パネル、フィルムに圧
着することにより、画像表示装置に適用することができ
る。FIG. 2 shows an example of the structure of the laminated plate for an image display device according to the present invention. This laminated plate for an image display device is used in the image display device as described above, and one surface of the sheet-shaped transparent adhesive material 4 is pressure-bonded and laminated on the optical filter 5. On the other surface of the transparent adhesive material 4, a release film 40 having a release function such as polyethylene terephthalate is attached. It can be applied to an image display device by peeling off the release film 40 and pressing the surface of the release film 40 onto an electromagnetic wave shielding material used in the image display device, various panels, or a film.
【００２５】図３は、本発明に係る画像表示装置に用い
る透明粘着シートを示すものである。離型フィルム４０
間に透明粘着材４を挟みこんで一体に成形し、透明粘着
材４の両面に離型フィルム４０を形成してなる。各面の
離型フィルム４０を剥がすことにより、電磁波シールド
材３と光学フィルター５との間に介在させて両者を密着
一体化させて使用することができる。FIG. 3 shows a transparent adhesive sheet used in the image display device according to the present invention. Release film 40
The transparent adhesive material 4 is sandwiched between them and integrally molded, and the release films 40 are formed on both surfaces of the transparent adhesive material 4. By peeling off the release film 40 on each surface, it is possible to interpose the electromagnetic wave shield material 3 and the optical filter 5 so that they are in close contact with each other and used.
【００２６】以上、本発明の実施の形態を説明したが、
本発明は上記の実施の形態に限定されるものではなく、
本発明の要旨の範囲で種々の変形、付加等が可能であ
る。画像表示装置をプラズマ発光表示装置（ＰＤＰ）と
して構成した例を示して説明したが、本発明は、液晶表
示装置（ＬＣＤ）、有機エレクトロルミネッセンス（Ｅ
Ｌ）その他の画像表示装置として構成することもでき
る。The embodiment of the present invention has been described above.
The present invention is not limited to the above embodiment,
Various modifications and additions are possible within the scope of the present invention. The example in which the image display device is configured as a plasma light emitting display device (PDP) has been described, but the present invention is not limited to the liquid crystal display device (LCD) and the organic electroluminescence (E).
L) It may be configured as another image display device.
【００２７】[0027]
【実施例】（実施例１）光学フィルターの代用としてポ
リカーボネート（ＰＣ）製の厚さ２．０ｍｍの板（９０
ｍｍ×９０ｍｍ）に、アクリル酸エステル共重合体を金
属化合物で架橋させた厚さ２．０ｍｍのアクリル系透明
粘着シートをロール圧着した。画像表示パネル（表示面
基板）代用として厚さ３．０ｍｍのフロートガラス製パ
ネル（１００ｍｍ×１００ｍｍ）面に、市販の導電性メ
ッシュ加工が施された粘着材付き電磁波シールドフィル
ムをロール圧着した。電磁波シールドフィルムの、電極
部分として周縁部５ｍｍを確保したメッシュの面にアク
リル系透明粘着シートと接触するような向きでロール圧
着し、画像表示装置（サンプル）を得た。Example 1 As a substitute for an optical filter, a 2.0 mm-thick plate (90) made of polycarbonate (PC) was used.
(mm × 90 mm), an acrylic transparent pressure-sensitive adhesive sheet having a thickness of 2.0 mm obtained by crosslinking an acrylic acid ester copolymer with a metal compound was roll-pressed. As a substitute for an image display panel (display surface substrate), a commercially available conductive mesh-processed electromagnetic wave shield film with an adhesive material was roll-pressed onto a 3.0 mm thick float glass panel (100 mm × 100 mm) surface. An image display device (sample) was obtained by roll-pressing on the surface of the mesh of the electromagnetic wave shielding film in which a peripheral portion of 5 mm was secured as an electrode portion in such a direction as to come into contact with the acrylic transparent adhesive sheet.
【００２８】なお、前記アクリル酸エステル共重合体
は、ｎ−ブチルアクリレート：７８．４重量％、２−エ
チルヘキシルアクリレート：１９．６重量％及びアクリ
ル酸：２．０重量％を共重合させたもので、アクリル酸
エステル共重合体をＧＰＣ（ゲルパーミエーションクロ
マトグラフィー）で測定した分子量及び分子量分布は、
重量平均分子量（ＭＷ）：２．２７×１０6 、重量平均
分子量（ＭＷ）／数平均分子量（ＭＮ）：３．６であっ
た。The acrylic ester copolymer is a copolymer of n-butyl acrylate: 78.4% by weight, 2-ethylhexyl acrylate: 19.6% by weight and acrylic acid: 2.0% by weight. The molecular weight and molecular weight distribution of the acrylic ester copolymer measured by GPC (gel permeation chromatography) are
The weight average molecular weight (MW) was 2.27 × 10 6 , and the weight average molecular weight (MW) / number average molecular weight (MN) was 3.6.
【００２９】また、前記アクリル系透明粘着シートは、
アクリル酸エステル共重合体１００重量部に対して、金
属化合物としてアセチルアセトンアルミ塩：０．７重量
部を溶融攪拌した後、離型フィルム間に所定厚みでシー
ト状に成形して得たものを用いた。The acrylic transparent adhesive sheet is
Acetylacetone aluminum salt as a metal compound: 0.7 parts by weight is melt-stirred with respect to 100 parts by weight of an acrylic acid ester copolymer, and then a sheet-like product having a predetermined thickness is formed between the release films. I was there.
【００３０】（実施例２）光学フィルター基材の代用と
してポリカーボネート（ＰＣ）製の厚さ２．０ｍｍの板
（９０ｍｍ×９０ｍｍ）に、アクリル酸エステル共重合
体を金属化合物で架橋させた厚さ１．０ｍｍのアクリル
系透明粘着シートをロール圧着した。画像表示パネル代
用として厚さ３．０ｍｍのフロートガラス製パネル（１
００ｍｍ×１００ｍｍ）面に、市販の導電性メッシュ加
工が施された粘着材付き電磁波シールドフィルムをロー
ル圧着した。電磁波シールドフィルムの、電極部分とし
て周縁部５ｍｍを確保したメッシュの面にアクリル系透
明粘着シートと接触するような向きでロール圧着し、画
像表示装置（サンプル）を得た。アクリル系透明粘着シ
ートは実施例１と同様の方法で作製した。(Example 2) As a substitute for the optical filter substrate, a plate (90 mm x 90 mm) made of polycarbonate (PC) and having a thickness of 2.0 mm was used to cross-link the acrylic ester copolymer with a metal compound. A 1.0 mm acrylic transparent pressure-sensitive adhesive sheet was roll-pressed. Float glass panel with a thickness of 3.0 mm (1
On the surface of (00 mm × 100 mm), a commercially available electroconductive mesh-processed electromagnetic wave shielding film with an adhesive material was roll-pressed. An image display device (sample) was obtained by roll-pressing on the surface of the mesh of the electromagnetic wave shielding film in which a peripheral portion of 5 mm was secured as an electrode portion in such a direction as to come into contact with the acrylic transparent adhesive sheet. The acrylic transparent pressure-sensitive adhesive sheet was produced in the same manner as in Example 1.
【００３１】（実施例３）光学フィルター基材の代用と
してポリエチレンテレフタレート（ＰＥＴ）製の厚さ
０．２ｍｍのフィルム（９０ｍｍ×９０ｍｍ）に、アク
リル酸エステル共重合体を金属化合物で架橋させた厚さ
２．０ｍｍのアクリル系透明粘着シートをロール圧着し
た。画像表示パネル代用として厚さ３．０ｍｍのフロー
トガラス製パネル（１００ｍｍ×１００ｍｍ）面に市販
の導電性メッシュ加工が施された粘着材付き電磁波シー
ルドフィルムをロール圧着した。電磁波シールドフィル
ムの、電極部分として周縁部５ｍｍを確保したメッシュ
の面にアクリル系透明粘着シートと接触するような向き
でロール圧着し、画像表示装置（サンプル）を得た。ア
クリル系透明粘着シートは実施例１と同様の方法で作製
した。Example 3 As a substitute for an optical filter substrate, a film (90 mm × 90 mm) made of polyethylene terephthalate (PET) and having a thickness of 0.2 mm was prepared by crosslinking an acrylic acid ester copolymer with a metal compound. A 2.0 mm thick acrylic transparent adhesive sheet was roll-pressed. As a substitute for an image display panel, an electromagnetic wave shield film with an adhesive material, which was processed with a commercially available conductive mesh, was roll-pressed onto a 3.0 mm thick float glass panel (100 mm × 100 mm) surface. An image display device (sample) was obtained by roll-pressing on the surface of the mesh of the electromagnetic wave shielding film in which a peripheral portion of 5 mm was secured as an electrode portion in such a direction as to come into contact with the acrylic transparent adhesive sheet. The acrylic transparent pressure-sensitive adhesive sheet was produced in the same manner as in Example 1.
【００３２】上述した各実施例により得られた画像表示
装置（サンプル）を用いて下記の試験をした。また、次
の評価方法で観察し、評価した。その結果を、表１に示
す。なお、各実施例における、本発明の規定するＫ値並
びに本発明の規定する（ａ）及び（ｂ）の弾性率等につ
いて表１に併せて記載した。The following tests were carried out using the image display device (sample) obtained in each of the above-mentioned examples. Moreover, it observed and evaluated by the following evaluation methods. The results are shown in Table 1. In addition, in each example, the K value specified by the present invention and the elastic modulus of (a) and (b) specified by the present invention are also shown in Table 1.
【００３３】〔耐衝撃試験方法（図４参照）〕：固定し
た円筒形金属製支持具（外径６０ｍｍ／内径５０ｍｍ／
高さ４０ｍｍ) に図４のようにガラス台（厚さ３ｍｍ×
１００ｍｍ角) を置き、その上に、＃１２００サンドペ
ーパー（１００ｍｍ角) 、そして各画像表示装置（サン
プル）をＰＣ製の板が上になる状態で載せ、９５ｇの鋼
球を０．５３ｍの高さから自由落下させた。この時の衝
撃値（０．５Ｊ）で画像表示パネル代用フロートガラス
製パネルの破壊の有無を観察した。破壊しなかったもの
を○とした。[Impact resistance test method (see FIG. 4)]: Fixed cylindrical metal support (outer diameter 60 mm / inner diameter 50 mm /
A glass stand (thickness: 3 mm x 40 mm) as shown in Fig. 4
100mm square), put # 1200 sandpaper (100mm square), and each image display device (sample) on it with the plate made of PC facing up, and place 95g of steel balls at a height of 0.53m. So I let it fall freely. The impact value (0.5 J) at this time was observed for the presence or absence of breakage of the float glass panel as a substitute for the image display panel. Those that were not destroyed were marked with a circle.
【００３４】〔密着外観評価方法〕：各実施例により得
られた画像表示装置（サンプル）の面内を観察し、導電
性メッシュの凹凸に気泡のないものを○とした。[Evaluation Method of Adhesion Appearance]: The in-plane of the image display device (sample) obtained in each of the examples was observed, and the conductive mesh having no irregularities was rated as ◯.
【００３５】[0035]
【表１】 [Table 1]
【００３６】表１の結果から明らかなとおり、各実施例
のものは、耐衝撃性に優れ、また、気泡の発生もなく、
視認性に優れたものであった。As is clear from the results shown in Table 1, each of the examples has excellent impact resistance and does not generate bubbles.
It was excellent in visibility.
【００３７】[0037]
【発明の効果】以上説明したように、本発明のフィルタ
ー一体型画像表示装置によれば、画像表示装置のコスト
ダウンや薄型化が規制されるという従来技術の問題点を
解消することができることに加えて、電磁波シールド材
と光学フィルターとの間に設けられた透明粘着材によっ
て、画像表示装置に加わる外力に対する緩衝機能が奏さ
れ、優れた耐衝撃性が発揮される。また、透明粘着材が
電磁波シールド材の表面によく馴染み、気泡の発生のな
い、視認性、外観に優れた画像表示装置が提供される。
電磁波シールド材の導電性メッシュの微細凹凸に対して
も気泡や剥離を発生せずに密着する。また、電磁波シー
ルド材の、電極が設けられる周縁部を残して、電磁波シ
ールド材面と光学フィルターとを透明粘着材を用いて密
着一体化することにより、電磁波シールド材に接続する
電極の取り出し部を確保し、電磁波シールド材の機能を
有効に発揮させることができる。As described above, according to the filter-integrated image display device of the present invention, it is possible to solve the problem of the prior art that the cost reduction and the thickness reduction of the image display device are restricted. In addition, the transparent adhesive material provided between the electromagnetic wave shield material and the optical filter exerts a shock absorbing function against external force applied to the image display device, and exhibits excellent impact resistance. Further, an image display device is provided in which the transparent adhesive material is well adapted to the surface of the electromagnetic wave shielding material, does not generate bubbles, and is excellent in visibility and appearance.
It adheres to the fine irregularities of the conductive mesh of the electromagnetic wave shield material without causing bubbles or peeling. In addition, by leaving a peripheral portion of the electromagnetic wave shield material on which the electrode is provided, the electromagnetic wave shield material surface and the optical filter are closely adhered and integrated by using a transparent adhesive material, so that an electrode take-out portion to be connected to the electromagnetic wave shield material is formed. Therefore, the function of the electromagnetic wave shielding material can be effectively ensured.
【図１】画像表示パネル１の構造を示すもので、（ａ）
は縦断面図、（ｂ）は正面図である。FIG. 1 shows the structure of an image display panel 1, (a)
Is a longitudinal sectional view, and (b) is a front view.
【図２】本発明に係る画像表示装置用積層板の断面図で
ある。FIG. 2 is a cross-sectional view of a laminated plate for an image display device according to the present invention.
【図３】本発明に係る画像表示装置に用いる透明粘着シ
ートの断面図である。FIG. 3 is a cross-sectional view of a transparent adhesive sheet used in the image display device according to the present invention.
【図４】実施例における耐衝撃試験方法の説明図であ
る。FIG. 4 is an explanatory diagram of an impact resistance test method in Examples.
１ 画像表示パネル ２ 表示面基板 ３ 電磁波シールド材 ４ 透明粘着材 ５ 光学フィルター ４０ 離型フィルム 1 Image display panel 2 Display board 3 Electromagnetic wave shield material 4 transparent adhesive 5 Optical filter 40 Release film
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０５Ｋ 9/00 Ｇ０２Ｂ 1/10 Ｚ Ｆターム(参考） 2H048 CA12 CA19 CA24 CA25 2K009 AA02 AA15 BB24 EE03 5E321 AA04 BB21 BB41 CC16 GG05 GH01 5G435 AA01 AA09 BB05 BB06 BB12 EE12 GG11 GG33 ─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. 7 Identification Code FI Theme Coat (Reference) H05K 9/00 G02B 1/10 Z F Term (Reference) 2H048 CA12 CA19 CA24 CA25 2K009 AA02 AA15 BB24 EE03 5E321 AA04 BB21 BB41 CC16 GG05 GH01 5G435 AA01 AA09 BB05 BB06 BB12 EE12 GG11 GG33
Claims (10)
ールド材を積層し、電磁波シールド材面と光学フィルタ
ーとを透明粘着材を用いて密着一体化したことを特徴と
する画像表示装置。1. An image display device, characterized in that an electromagnetic wave shielding material is laminated on a display surface substrate of an image display panel, and the electromagnetic wave shielding material surface and an optical filter are adhered and integrated by using a transparent adhesive material.
周縁部を残して、電磁波シールド材面と光学フィルター
とを透明粘着材を用いて密着一体化したことを特徴とす
る請求項１に記載の画像表示装置。2. The electromagnetic wave shielding material, wherein the surface of the electromagnetic wave shielding material and the optical filter are adhered and integrated with each other by using a transparent adhesive material, leaving a peripheral edge portion where the electrode is provided. Image display device.
の表面に導電性メッシュが形成され、透明フィルムの裏
面に粘着加工が施されてなる請求項１又は２に記載の画
像表示装置。3. The image display device according to claim 1, wherein the electromagnetic wave shielding material has a conductive mesh formed on the surface of a transparent film, and an adhesive process is applied to the back surface of the transparent film.
定した動的粘弾性特性の関係が下記式の範囲にあること
を特徴とする請求項１〜３のいずれかに記載の画像表示
装置。 Ｋ＝ｄ×２πｆ×√（ρ／３Ｇ’）≧０．５ ｄ ：透明粘着材の厚み（ｍ） ｆ ：ｔａｎδピーク値の周波数（Ｈｚ） ρ ：透明粘着材の密度（ｋｇ／ｍ3 ） Ｇ’：ｔａｎδピーク値の貯蔵弾性率（Ｐａ）4. The image display device according to claim 1, wherein the relationship between the thickness of the transparent adhesive material and the dynamic viscoelastic property measured by frequency dispersion is in the range of the following formula. . K = d × 2πf × √ (ρ / 3G ′) ≧ 0.5 d: Thickness of transparent adhesive material (m) f: Frequency of tan δ peak value (Hz) ρ: Density of transparent adhesive material (kg / m 3 ) G ′: storage modulus of tan δ peak value (Pa)
の弾性率の範囲にあることを特徴とする請求項１〜４の
いずれかに記載の画像表示装置。 （ａ）測定温度２０℃、周波数１Ｈｚでの貯蔵弾性率
Ｇ’（１Ｈｚ）が５×１０ 3 〜５×１０5 Ｐａ。 （ｂ）基準温度２０℃、周波数１０-7Ｈｚでの貯蔵弾性
率Ｇ’（１０-7Ｈｚ）が５×１０1 〜５×１０3 Ｐａ。5. The transparent adhesive material comprises the following (a) and (b):
The elastic modulus is in the range of 5.
The image display device according to any one of claims. (A) Storage elastic modulus at a measurement temperature of 20 ° C. and a frequency of 1 Hz
G '(1Hz) is 5 x 10 3 ~ 5 x 10Five Pa. (B) Reference temperature 20 ° C, frequency 10-7Storage elasticity in Hz
Rate G '(10-7Hz) is 5 × 101 ~ 5 x 103 Pa.
キシ系樹脂、ウレタン系樹脂、シリコーン系樹脂、ゴム
系樹脂のいずれかからなるシート状であることを特徴と
する請求項１〜５のいずれかに記載の画像表示装置。6. The sheet according to claim 1, wherein the transparent adhesive material is a sheet made of any one of acrylic resin, epoxy resin, urethane resin, silicone resin and rubber resin. An image display device according to claim 2.
外線カット、色調補正、表面硬度向上のいずれか一つ以
上の機能を有することを特徴とする請求項１〜６のいず
れかに記載の画像表示装置。7. The image according to claim 1, wherein the optical filter has at least one function of antireflection, near-infrared ray cut, color tone correction, and surface hardness improvement. Display device.
樹脂、アクリル系樹脂、ポリカーボネート系樹脂、脂環
式ポリオレフィン系樹脂及びガラスの少なくとも１つ以
上の透明基材を用いた厚さ０．１ｍｍ〜５ｍｍのもので
ある請求項１〜７のいずれかに記載の画像表示装置。8. The optical filter has a thickness of 0.1 mm to 5 mm and is made of at least one transparent base material of polyester resin, acrylic resin, polycarbonate resin, alicyclic polyolefin resin, and glass. The image display device according to claim 1, which is a thing.
示装置に用いられる積層板であって、シート状をなす透
明粘着材の一方の面を光学フィルターに圧着し、透明粘
着材の他方の面に離型フィルムを設けてなる画像表示装
置用積層板。9. A laminated plate used in the image display device according to claim 1, wherein one surface of a sheet-shaped transparent adhesive material is pressure-bonded to an optical filter to form a transparent adhesive material. A laminate for an image display device, which is provided with a release film on the other surface.
表示装置に用いられる、シート状をなす透明粘着材であ
って、該透明粘着材の両面に離型フィルムを設けてな
り、画像表示装置の電磁波シールド材と光学フィルター
との間に介在させて密着一体化させて使用する画像表示
装置に用いる透明粘着シート。10. A sheet-like transparent adhesive material for use in the image display device according to claim 1, wherein a release film is provided on both surfaces of the transparent adhesive material. A transparent pressure-sensitive adhesive sheet used for an image display device, which is used by being interposed between an electromagnetic wave shielding material of a display device and an optical filter so as to be closely adhered and integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001349765A JP3860460B2 (en) | 2001-11-15 | 2001-11-15 | Filter-integrated image display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001349765A JP3860460B2 (en) | 2001-11-15 | 2001-11-15 | Filter-integrated image display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003150065A true JP2003150065A (en) | 2003-05-21 |
| JP3860460B2 JP3860460B2 (en) | 2006-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001349765A Expired - Fee Related JP3860460B2 (en) | 2001-11-15 | 2001-11-15 | Filter-integrated image display device |
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| JP (1) | JP3860460B2 (en) |
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| JP2006153955A (en) * | 2004-11-25 | 2006-06-15 | Sumitomo Osaka Cement Co Ltd | Optical filter |
| JP2006169438A (en) * | 2004-12-17 | 2006-06-29 | Mitsubishi Plastics Ind Ltd | Pressure-sensitive adhesive sheet for bonding of optical element |
| WO2008059995A1 (en) * | 2006-11-17 | 2008-05-22 | Lintec Corporation | Pressure sensitive adhesive composition for display |
| JPWO2006109841A1 (en) * | 2005-04-07 | 2008-11-20 | 日東電工株式会社 | Shock absorbing sheet for flat panel display, method for producing the same, and flat panel display |
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