JPH10240143A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH10240143A JPH10240143A JP9060117A JP6011797A JPH10240143A JP H10240143 A JPH10240143 A JP H10240143A JP 9060117 A JP9060117 A JP 9060117A JP 6011797 A JP6011797 A JP 6011797A JP H10240143 A JPH10240143 A JP H10240143A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- polarizing plate
- crystal display
- hard coat
- coat layer
- 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
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Polarising Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は一方の表面が凹凸
をなす偏光板を用いた液晶表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device using a polarizing plate having one surface having irregularities.
【０００２】[0002]
【従来の技術】図２は従来の液晶表示装置の一例の概略
側面図及びその一部の拡大概略断面図を示したものであ
る。この液晶表示装置では、液晶表示パネル１の裏面側
に調光シート１１、散乱シート１２及びエッジライト方
式のバックライト２１がこの順で配置された構造となっ
ている。このうち液晶表示パネル１は、液晶セル２の表
面に表面偏光板３が貼付けられ、液晶セル２の裏面に裏
面偏光板４が貼付けられた構造となっている。バックラ
イト２１は、導光板２２の裏面に反射シート２３が貼付
けられ、導光板２２の光入射面２２ａ側の上下端部に反
射シート２４の両端部が貼付けられ、導光板２２の光入
射面２２ａの近傍であって反射シート２４内に冷陰極蛍
光管２５が配置された構造となっている。散乱シート１
２は、導光板２２の表面から出射された光を散乱させる
ことにより、輝度の均一化を図るためのものである。調
光シート１１は、プリズムシート等からなり、散乱シー
ト１２の表面から出射された光を所定方向に集光するた
めのものである。2. Description of the Related Art FIG. 2 shows a schematic side view of an example of a conventional liquid crystal display device and an enlarged schematic sectional view of a part thereof. This liquid crystal display device has a structure in which a light control sheet 11, a scattering sheet 12, and an edge light type backlight 21 are arranged in this order on the back side of the liquid crystal display panel 1. Among them, the liquid crystal display panel 1 has a structure in which a front polarizing plate 3 is stuck on the front surface of a liquid crystal cell 2 and a back polarizing plate 4 is stuck on the back surface of the liquid crystal cell 2. The backlight 21 has a reflective sheet 23 attached to the back surface of the light guide plate 22, and both ends of the reflective sheet 24 attached to upper and lower ends of the light guide plate 22 on the light incident surface 22 a side, and a light incident surface 22 a of the light guide plate 22. And a structure in which the cold cathode fluorescent tubes 25 are arranged in the reflection sheet 24. Scattering sheet 1
Numeral 2 is to scatter light emitted from the surface of the light guide plate 22 to make the luminance uniform. The light control sheet 11 is made of a prism sheet or the like, and is for condensing light emitted from the surface of the scattering sheet 12 in a predetermined direction.
【０００３】次に、この液晶表示装置における液晶表示
パネル１の裏面偏光板４の具体的な構造について説明す
る。裏面偏光板４は、ＴＡＣ（トリアセチルセルロー
ス）等からなる裏面保護層４ａの表面に接着層４ｂを介
して偏光層４ｃが貼付けられ、偏光層４ｃの表面に接着
層４ｄを介してＴＡＣからなる表面保護層４ｅが貼付け
られ、表面保護層４ｅの表面に粘着層４ｆが設けられ、
裏面保護層４ａの裏面にアクリルウレタン樹脂等からな
るハードコート層４ｇが設けられた構造となっている。
そして、この裏面偏光板４は、その粘着層４ｆを液晶セ
ル２の裏面に粘着させ、液晶セル２の裏面に貼付けられ
ている。Next, a specific structure of the rear polarizing plate 4 of the liquid crystal display panel 1 in this liquid crystal display device will be described. The back polarizing plate 4 has a polarizing layer 4c adhered to the surface of a back protective layer 4a made of TAC (triacetyl cellulose) or the like via an adhesive layer 4b, and made of TAC via an adhesive layer 4d to the surface of the polarizing layer 4c. A surface protection layer 4e is attached, and an adhesive layer 4f is provided on the surface of the surface protection layer 4e.
The structure is such that a hard coat layer 4g made of acrylic urethane resin or the like is provided on the back surface of the back surface protective layer 4a.
The back polarizing plate 4 has the adhesive layer 4f adhered to the back surface of the liquid crystal cell 2 and is adhered to the back surface of the liquid crystal cell 2.
【０００４】ところで、この液晶表示装置を組立てる場
合、一例として、図示していないが、金属板からなる裏
面シールドケース内にバックライト２１、散乱シート１
２、調光シート１１及び液晶表示パネル１をこの順で積
層し、次いで裏面シールドケースに金属板からなる表面
シールドケースを組付けている。この場合、特に、調光
シート１１は、裏面偏光板４または散乱シート１２に対
して、一辺側を固着されただけで残りの三辺側を固着さ
れていない。即ち、調光シート１１の固着部以外の表面
及び裏面は、裏面偏光板４のハードコート層４ｇの裏面
及び散乱シート１２の表面とただ単に接触しているだけ
である。このようにするのは、調光シート１１は、通
常、アクリル樹脂、ポリエステル、ポリカーボネイト等
によって形成され、温度変化による伸縮が裏面偏光板４
や散乱シート１２に対してかなり大きいので、自由に伸
縮し得るようにするためである。なお、本例では、調光
シート１１の一辺を裏面偏光板４または散乱シート１２
の一辺に両面接着テープを介して接着したものである
が、調光シート１１は裏面偏光板４及び散乱シート１２
に対してどこも固着せず、単に積層するだけでもよい。When assembling this liquid crystal display device, as an example, although not shown, the backlight 21 and the scattering sheet 1 are placed in a back shield case made of a metal plate.
2. The light control sheet 11 and the liquid crystal display panel 1 are laminated in this order, and then a front shield case made of a metal plate is assembled to the back shield case. In this case, in particular, the light control sheet 11 has only one side fixed to the back polarizing plate 4 or the scattering sheet 12, but not the other three sides. That is, the surface and the back surface other than the fixing portion of the light control sheet 11 are merely in contact with the back surface of the hard coat layer 4 g of the back polarizing plate 4 and the surface of the scattering sheet 12. This is because the light control sheet 11 is usually formed of acrylic resin, polyester, polycarbonate or the like, and the expansion and contraction due to a temperature change is caused by the rear polarizing plate 4.
The reason for this is that it can be freely expanded and contracted because it is considerably large with respect to the scattering sheet 12. In this example, one side of the light control sheet 11 is connected to the back polarizing plate 4 or the scattering sheet 12.
The light control sheet 11 is adhered to one side of the sheet through a double-sided adhesive tape.
However, it does not need to be fixed at all, and may be simply laminated.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
このような液晶表示装置では、調光シート１１と裏面偏
光板４等は全面を固着していないため、高湿度の環境下
において、調光シート１１と裏面偏光板４との隙間に結
露が生じることがあり、その露滴を介して調光シート１
１の平坦な表面の一部が裏面偏光板４のハードコート層
４ｇの平坦な裏面に吸着してしまう。このような場合に
は、調光シート１１と裏面偏光板４との間に介在された
水分の周囲が黒すじとして視認され、表示品質が低下す
るという問題があった。また、上記水分が蒸発しても乾
き縞が生じ、この乾き縞が黒すじとして視認され、これ
また表示品質が低下するという問題があった。さらに、
調光シート１１の輝度は、図３（Ａ）に示す上下方向の
視角の場合も図３（Ｂ）に示す水平方向の視角の場合も
共に、ある視角のところで急激に低下し、視野角が狭い
という問題もあった。この発明の課題は、調光シートの
表面が裏面偏光板の裏面に吸着しないようにするととも
に、視野角を広くすることである。However, in such a conventional liquid crystal display device, since the light control sheet 11 and the rear polarizing plate 4 and the like are not fixed on the entire surface, the light control sheet can be used in a high humidity environment. In some cases, dew may be formed in the gap between the rear light polarizer 11 and the rear polarizing plate 4, and the light control sheet 1
A part of the flat surface 1 is adsorbed to the flat back surface of the hard coat layer 4g of the back polarizing plate 4. In such a case, there is a problem that the surroundings of the moisture interposed between the light control sheet 11 and the back polarizing plate 4 are visually recognized as black streaks, and the display quality is degraded. Further, there is a problem that even when the above-mentioned moisture evaporates, dry stripes are formed, and these dry stripes are visually recognized as black streaks, and the display quality is reduced. further,
The luminance of the light control sheet 11 rapidly decreases at a certain viewing angle in both the vertical viewing angle shown in FIG. 3A and the horizontal viewing angle shown in FIG. There was also the problem of being narrow. An object of the present invention is to prevent the front surface of the light control sheet from adsorbing to the rear surface of the rear polarizing plate and to widen the viewing angle.
【０００６】[0006]
【課題を解決するための手段】この発明は、液晶セル
と、この液晶セルの表面に配設された表面偏光板と、前
記液晶セルの裏面に配設された裏面偏光板と、この裏面
偏光板の裏面側に配置された調光シートと、この調光シ
ートの裏面側に配置されたバックライトとを具備する液
晶表示装置において、前記裏面偏光板の裏面または前記
調光シートの表面のいずれか一方を凹凸面に形成したも
のである。SUMMARY OF THE INVENTION The present invention provides a liquid crystal cell, a front polarizer disposed on the surface of the liquid crystal cell, a rear polarizer disposed on the back of the liquid crystal cell, and a rear polarizer. In a liquid crystal display device including a light control sheet disposed on the back side of the plate and a backlight disposed on the back side of the light control sheet, any one of the back surface of the back polarizing plate and the front surface of the light control sheet One of them is formed on an uneven surface.
【０００７】この発明によれば、裏面偏光板の裏面を凹
凸としているので、裏面偏光板の裏面と調光シートの表
面との隙間に結露が生じても、その露滴を凹部内に収納
してしまい、調光シートの表面と裏面偏光板の裏面とが
露滴を介して吸着しないようにすることができる。ま
た、裏面偏光板の裏面の凹凸により、調光シートにより
集光された光が適度に散乱され、これにより視角変化に
よる輝度の急激な低下が緩和され、ひいては視野角を広
くすることができる。According to the present invention, since the back surface of the back polarizing plate is made uneven, even if dew condensation occurs in the gap between the back surface of the back polarizing plate and the surface of the light control sheet, the dew drops are stored in the recess. As a result, the front surface of the light control sheet and the back surface of the back polarizing plate can be prevented from adsorbing via dew drops. Further, the light condensed by the light control sheet is appropriately scattered by the unevenness on the back surface of the back polarizing plate, whereby a sharp decrease in luminance due to a change in viewing angle is mitigated, and the viewing angle can be widened.
【０００８】[0008]
【発明の実施の形態】図１はこの発明の一実施形態にお
ける液晶表示装置の概略側面図及びその一部の拡大概略
断面図を示したものである。この図において、図２と同
一名称部分には同一の符号を付し、その説明を適宜省略
する。この液晶表示装置では、液晶表示パネル１の裏面
偏光板４のハードコート層４ｇ中にシリカ等からなる多
数の透明粒子４ｈが分散されている。次に、この場合の
ハードコート層４ｇの形成方法について説明する。ま
ず、ハードコート層４ｇを形成するためのアクリルウレ
タン樹脂中に多数の透明粒子４ｈを混合させたものを用
意する。透明粒子４ｈの径は、１〜１０μｍ程度が良
く、その内でも特に１〜５μｍ程度が好ましい。次に、
ロールコート法やスキージを用いた塗布法により、上記
用意したものを裏面保護層４ａの裏面に塗布する。この
場合、透明粒子４ｈの存在しない領域におけるハードコ
ート層４ｇの層厚が透明粒子４ｈの径よりも小さくなる
ようにする。すると、透明粒子４ｈのすべては裏面保護
層４ａの裏面に接触する状態となる。また、透明粒子４
ｈの裏面側には表面張力により薄いハードコート層４ｇ
が形成される。FIG. 1 shows a schematic side view of a liquid crystal display device according to an embodiment of the present invention and an enlarged schematic cross-sectional view of a part thereof. In this figure, the same parts as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. In this liquid crystal display device, a large number of transparent particles 4 h made of silica or the like are dispersed in the hard coat layer 4 g of the back polarizing plate 4 of the liquid crystal display panel 1. Next, a method of forming the hard coat layer 4g in this case will be described. First, a mixture of acrylic urethane resin for forming the hard coat layer 4g and many transparent particles 4h is prepared. The diameter of the transparent particles 4h is preferably about 1 to 10 μm, and particularly preferably about 1 to 5 μm. next,
The prepared material is applied to the back surface of the back surface protective layer 4a by a roll coating method or a coating method using a squeegee. In this case, the thickness of the hard coat layer 4g in a region where the transparent particles 4h are not present is set to be smaller than the diameter of the transparent particles 4h. Then, all of the transparent particles 4h come into contact with the back surface of the back surface protective layer 4a. In addition, the transparent particles 4
4g thin hard coat layer on the back side of h
Is formed.
【０００９】ここで、ハードコート層４ｇ中に点在させ
る透明粒子４ｈの好適な分散度の範囲は、ＪＩＳＫ６７
１４に規定されている測定方法によって得られる曇価
（ヘイズ値）により特定する。即ち、積分球式光線透過
率測定装置を用い、透明粒子４ｈを散在させたハードコ
ート層４ｇが形成された裏面偏光板４に光線を透過さ
せ、全光線透過率に対する散乱光透過率の割合（％）、
つまりヘイズ値を求める。このようにして得られたヘイ
ズ値が、５〜５０％の範囲内でより好適には１０〜３０
％の範囲内の価となるように、ハードコート層４ｇを形
成する。The preferred range of the degree of dispersion of the transparent particles 4h scattered in the hard coat layer 4g is JIS K67.
It is specified by the haze value (haze value) obtained by the measurement method specified in 14. That is, using an integrating sphere light transmittance measuring device, light is transmitted through the back polarizing plate 4 on which the hard coat layer 4g in which the transparent particles 4h are dispersed is formed, and the ratio of the scattered light transmittance to the total light transmittance ( %),
That is, the haze value is obtained. The haze value thus obtained is more preferably within a range of 5 to 50% and preferably 10 to 30.
The hard coat layer 4g is formed so as to have a value within the range of%.
【００１０】以上のように、この液晶表示装置では、透
明粒子４ｈの裏面側に形成されたハードコート層４ｇの
部分が透明粒子４ｈの存在しない領域に形成されたハー
ドコート層４ｇの部分に対して突出することになり、つ
まりハードコート層４ｇの裏面が凹凸することになる。
なお、透明粒子４ｈの存在しない領域におけるハードコ
ート層４ｇの層厚を透明粒子４ｈの径と同じとした場合
には、透明粒子４ｈの表面側に表面張力により形成され
る薄いハードコート層４ｇの層厚だけ、ハードコート層
４ｇの裏面が凹凸することになる。As described above, in this liquid crystal display device, the portion of the hard coat layer 4g formed on the back side of the transparent particles 4h is different from the portion of the hard coat layer 4g formed in the region where the transparent particles 4h are not present. That is, the rear surface of the hard coat layer 4g becomes uneven.
When the layer thickness of the hard coat layer 4g in the region where the transparent particles 4h are not present is the same as the diameter of the transparent particles 4h, the thickness of the thin hard coat layer 4g formed on the surface side of the transparent particles 4h by surface tension is reduced. The back surface of the hard coat layer 4g becomes uneven by the thickness of the layer.
【００１１】このように、この液晶表示装置では、裏面
偏光板４のハードコート層４ｇの裏面を凹凸としている
ので、調光シート１１の表面がハードコート層４ｇの裏
面に接触しようとしても、透明粒子４ｈの裏面側に形成
された薄いハードコート層４ｇの突出面に点状に接触す
るだけである。この結果、ハードコート層４ｇの裏面と
調光シート１１の表面との隙間に結露が生じても、その
露滴が凹部内に収納された状態となり、調光シート１１
の表面とハードコート層４ｇの裏面とが露滴を介して吸
着しないようにすることができ、ひいてはこのような吸
着に起因する表示品質の低下が生じないようにすること
ができる。また、ハードコート層４ｇ中の透明粒子４ｈ
による凹凸により、調光シート１１により集光された光
が適度に散乱され、これにより視角変化による輝度の急
激な低下が緩和され、ひいては視野角を広くすることが
できる。As described above, in this liquid crystal display device, since the back surface of the hard coat layer 4g of the back polarizing plate 4 is made uneven, even if the surface of the light control sheet 11 tries to contact the back surface of the hard coat layer 4g, it is transparent. It merely contacts the protruding surface of the thin hard coat layer 4g formed on the back side of the particle 4h in a point-like manner. As a result, even if dew condensation occurs in a gap between the back surface of the hard coat layer 4g and the front surface of the light control sheet 11, the dew drops are stored in the concave portions, and the light control sheet 11
And the back surface of the hard coat layer 4g can be prevented from adsorbing via dew drops, and thus, the display quality can be prevented from deteriorating due to such adsorption. Also, the transparent particles 4h in the hard coat layer 4g
The light condensed by the light control sheet 11 is appropriately scattered by the unevenness caused by the above, whereby a sharp decrease in luminance due to a change in the viewing angle is mitigated, and the viewing angle can be widened.
【００１２】なお、上記実施形態では、裏面偏光板４の
ハードコート層４ｇ中に透明粒子４ｈを分散させてその
裏面を凹凸とした場合について説明したが、これに限定
されるものではない。例えば、図示していないが、ハー
ドコート層４ｇを有しない偏光板４において、裏面保護
層４ａの裏面側に透明粒子４ｈを設けて当該裏面を凹凸
とするようにしてもよい。この場合、透明粒子４ｈの表
面に接着層を設け、この接着層を介して透明粒子４ｈを
裏面保護層４ａの裏面に接着するようにしてもよい。ま
た、透明粒子４ｈを用いずに、サンドブラスト等の表面
加工等により、ハードコート層４ｇまたは裏面保護層４
ａの裏面を凹凸とするようにしてもよい。これら種々の
変形例のいずれにおいても、前述したヘイズ値が５〜５
０％の範囲内で、特には１０〜３０％の範囲内であるこ
とが望ましい。さらに、裏面偏光板４の裏面ではなく、
調光シート１１の表面を凹凸とするようにしてもよい。
この場合、調光シート１１を射出成形により形成する際
に、調光シート１１の裏面だけでなく同時に調光シート
１１の表面も例えば断面三角形状の凹凸となるようにし
てもよい。加えて、バックライトとしては、エッジライ
ト方式に限らず、直下方式であってもよく、またＥＬ
（エレクトロルミネセンス）パネルであってもよい。In the above embodiment, the case where the transparent particles 4h are dispersed in the hard coat layer 4g of the back polarizing plate 4 to make the back surface uneven is described. However, the present invention is not limited to this. For example, although not shown, in the polarizing plate 4 having no hard coat layer 4g, the back surface may be provided with transparent particles 4h on the back surface side of the back surface protective layer 4a to make the back surface uneven. In this case, an adhesive layer may be provided on the surface of the transparent particles 4h, and the transparent particles 4h may be bonded to the back surface of the back surface protective layer 4a via the adhesive layer. Also, the hard coat layer 4g or the back surface protective layer 4 may be formed by surface processing such as sand blasting without using the transparent particles 4h.
The back surface of a may be made uneven. In any of these various modifications, the above-mentioned haze value is 5 to 5
It is desirably within the range of 0%, particularly within the range of 10 to 30%. Furthermore, instead of the back surface of the back polarizing plate 4,
The surface of the light control sheet 11 may be made uneven.
In this case, when the light control sheet 11 is formed by injection molding, not only the back surface of the light control sheet 11 but also the surface of the light control sheet 11 may have irregularities having, for example, a triangular cross section. In addition, the backlight is not limited to the edge light type, but may be a direct type.
(Electroluminescence) panel.
【００１３】[0013]
【発明の効果】以上説明したように、この発明によれ
ば、裏面偏光板の裏面を凹凸としているので、裏面偏光
板の裏面と調光シートの表面との隙間に結露が生じて
も、その露適を介して調光シートの表面が裏面偏光板の
裏面に吸着しないようにすることができ、ひいてはこの
ような吸着に起因する表示品質の低下が生じないように
することができる。また、裏面偏光板の裏面の凹凸によ
り、調光シートにより集光された光が適度に散乱され、
これにより視角変化による輝度の急激な低下が緩和さ
れ、ひいては視野角を広くすることができる。As described above, according to the present invention, since the back surface of the back polarizing plate is made uneven, even if dew condensation occurs in the gap between the back surface of the back polarizing plate and the front surface of the light control sheet, the present invention is not limited thereto. It is possible to prevent the front surface of the light control sheet from adsorbing to the rear surface of the rear polarizing plate through the exposure, and to prevent the deterioration of display quality due to such adsorption. Also, due to the unevenness of the back surface of the back polarizing plate, the light collected by the light control sheet is appropriately scattered,
As a result, a sharp decrease in luminance due to a change in the viewing angle is mitigated, and the viewing angle can be increased.
【図１】この発明の一実施形態における液晶表示装置の
概略側面図及びその一部の拡大概略断面図。FIG. 1 is a schematic side view of a liquid crystal display device according to an embodiment of the present invention, and an enlarged schematic cross-sectional view of a part thereof.
【図２】従来の液晶表示装置の一例の概略側面図及びそ
の一部の拡大概略断面図。FIG. 2 is a schematic side view of an example of a conventional liquid crystal display device and an enlarged schematic sectional view of a part thereof.
【図３】（Ａ）は図２に示す調光シートの輝度の上下方
向視角依存性を示す図、（Ｂ）は左右方向視角依存性を
示す図。3A is a diagram showing the vertical viewing angle dependency of the luminance of the light control sheet shown in FIG. 2, and FIG. 3B is a diagram showing the horizontal viewing angle dependency.
１ 液晶表示パネル ２ 液晶セル ３ 表面偏光板 ４ 裏面偏光板 ４ａ 裏面保護層 ４ｃ 偏光層 ４ｅ 表面保護層 ４ｇ ハードコート層 ４ｈ 透明粒子 １１ 調光シート １２ 散乱シート ２１ バックライト REFERENCE SIGNS LIST 1 liquid crystal display panel 2 liquid crystal cell 3 front polarizing plate 4 back polarizing plate 4 a back protection layer 4 c polarizing layer 4 e surface protection layer 4 g hard coat layer 4 h transparent particles 11 light control sheet 12 scattering sheet 21 backlight
Claims (4)
された表面偏光板と、前記液晶セルの裏面に配設された
裏面偏光板と、この裏面偏光板の裏面側に配置された調
光シートと、この調光シートの裏面側に配置されたバッ
クライトとを具備する液晶表示装置において、 前記裏面偏光板の裏面または前記調光シートの表面のい
ずれか一方を凹凸面に形成したことを特徴とする液晶表
示装置。1. A liquid crystal cell, a front polarizer disposed on a front surface of the liquid crystal cell, a rear polarizer disposed on a rear surface of the liquid crystal cell, and a rear surface of the rear polarizer. In a liquid crystal display device including a light control sheet and a backlight disposed on the back side of the light control sheet, one of the back surface of the back polarizing plate and the front surface of the light control sheet is formed on an uneven surface. A liquid crystal display device characterized by the above-mentioned.
した透明な裏面保護層と、この裏面保護層の表面に貼付
られた偏光層と、この偏光層の表面に貼付られた透明な
表面保護層とを具備することを特徴とする請求項１に記
載の液晶表示装置。2. The back-side polarizing plate comprises a transparent back-side protective layer having an uneven back side, a polarizing layer attached to the surface of the back-side protective layer, and a transparent back-side layer attached to the surface of the polarizing layer. The liquid crystal display device according to claim 1, further comprising a surface protective layer.
と、この裏面保護層の表面に貼付られた偏光層と、この
偏光層の表面に貼付られた透明な表面保護層と、前記裏
面保護層の裏面に設けられ、裏面を凹凸とされたハード
コート層とを具備することを特徴とする請求項１に記載
の液晶表示装置。3. The backside polarizing plate comprises: a transparent backside protective layer; a polarizing layer attached to the surface of the backside protective layer; a transparent surface protective layer attached to the surface of the polarizing layer; The liquid crystal display device according to claim 1, further comprising: a hard coat layer provided on a back surface of the protective layer and having a back surface with irregularities.
明粒子を混合した材料からなることを特徴とする請求項
３に記載の液晶表示装置。4. The liquid crystal display device according to claim 3, wherein the hard coat layer is made of a material in which transparent particles are mixed with a transparent resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06011797A JP3658634B2 (en) | 1997-02-28 | 1997-02-28 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06011797A JP3658634B2 (en) | 1997-02-28 | 1997-02-28 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10240143A true JPH10240143A (en) | 1998-09-11 |
| JP3658634B2 JP3658634B2 (en) | 2005-06-08 |
Family
ID=13132866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06011797A Expired - Lifetime JP3658634B2 (en) | 1997-02-28 | 1997-02-28 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3658634B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001022130A1 (en) * | 1999-09-20 | 2001-03-29 | 3M Innovative Properties Company | Optical films having at least one particle-containing layer |
| WO2001022129A1 (en) * | 1999-09-20 | 2001-03-29 | 3M Innovative Properties Company | Optical films having at least one particle-containing layer |
| US6213385B1 (en) | 1997-08-19 | 2001-04-10 | Brazeway, Inc. | Method of cladding tubing and manufacturing condensor cores |
| US6559915B1 (en) | 1999-07-19 | 2003-05-06 | Fuji Photo Film Co., Ltd. | Optical films having matt property, films having a high transmittance, polarizing plates and liquid crystal display devices |
| US7063872B1 (en) | 1999-02-05 | 2006-06-20 | Fuji Photo Co., Ltd. | Films having a high transmittance and matt property |
| WO2008005760A1 (en) * | 2006-06-30 | 2008-01-10 | 3M Innovative Properties Company | Optical article including a beaded layer |
| JP2011075822A (en) * | 2009-09-30 | 2011-04-14 | Panasonic Corp | Display device |
| JP2018124353A (en) * | 2017-01-30 | 2018-08-09 | 京セラディスプレイ株式会社 | Liquid crystal display |
-
1997
- 1997-02-28 JP JP06011797A patent/JP3658634B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6213385B1 (en) | 1997-08-19 | 2001-04-10 | Brazeway, Inc. | Method of cladding tubing and manufacturing condensor cores |
| US7063872B1 (en) | 1999-02-05 | 2006-06-20 | Fuji Photo Co., Ltd. | Films having a high transmittance and matt property |
| US6559915B1 (en) | 1999-07-19 | 2003-05-06 | Fuji Photo Film Co., Ltd. | Optical films having matt property, films having a high transmittance, polarizing plates and liquid crystal display devices |
| US6977696B2 (en) | 1999-07-19 | 2005-12-20 | Fuji Photo Film Co., Ltd. | Optical films having matt property, films having a high transmittance, polarizing plates and liquid crystal display devices |
| WO2001022130A1 (en) * | 1999-09-20 | 2001-03-29 | 3M Innovative Properties Company | Optical films having at least one particle-containing layer |
| WO2001022129A1 (en) * | 1999-09-20 | 2001-03-29 | 3M Innovative Properties Company | Optical films having at least one particle-containing layer |
| US6268961B1 (en) | 1999-09-20 | 2001-07-31 | 3M Innovative Properties Company | Optical films having at least one particle-containing layer |
| WO2008005760A1 (en) * | 2006-06-30 | 2008-01-10 | 3M Innovative Properties Company | Optical article including a beaded layer |
| JP2011075822A (en) * | 2009-09-30 | 2011-04-14 | Panasonic Corp | Display device |
| JP2018124353A (en) * | 2017-01-30 | 2018-08-09 | 京セラディスプレイ株式会社 | Liquid crystal display |
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| Publication number | Publication date |
|---|---|
| JP3658634B2 (en) | 2005-06-08 |
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