JPH0246921B2 - HENKOBANSHIITO - Google Patents
HENKOBANSHIITOInfo
- Publication number
- JPH0246921B2 JPH0246921B2 JP55005682A JP568280A JPH0246921B2 JP H0246921 B2 JPH0246921 B2 JP H0246921B2 JP 55005682 A JP55005682 A JP 55005682A JP 568280 A JP568280 A JP 568280A JP H0246921 B2 JPH0246921 B2 JP H0246921B2
- Authority
- JP
- Japan
- Prior art keywords
- polarizing plate
- polarizer
- protective film
- polarity
- liquid crystal
- 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.)
- Expired - Lifetime
Links
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000031700 light absorption Effects 0.000 claims description 8
- 230000010287 polarization Effects 0.000 claims description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 11
- 238000005520 cutting process Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Description
【発明の詳細な説明】
本発明は偏光板シート、特に個々の大きさに切
断分割されて得られる偏光板が、その極性を明示
し得るよう構成された偏光板シートに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polarizing plate sheet, and particularly to a polarizing plate sheet constructed so that the polarizing plate obtained by cutting and dividing into individual sizes can clearly indicate its polarity.
通常、例えばツイストネマチツク（TN）型液
晶表示素子に被着される偏光板は、その極性、つ
まり偏光軸もしくは光吸収軸とTN型液晶分子配
向方向とを一致させる必要がある。ところが、液
晶表示素子の多様化に伴ない、偏光板にその極性
を明示することが要求されている。 Normally, for example, a polarizing plate attached to a twisted nematic (TN) type liquid crystal display element needs to have its polarity, that is, the polarization axis or light absorption axis, aligned with the orientation direction of TN type liquid crystal molecules. However, with the diversification of liquid crystal display elements, it is required that polarizing plates clearly indicate their polarity.
第１図は例えばTN型液晶表示素子に被着され
る打抜き済偏光板の一例を示す要部断面図であ
る。同図において、１は偏光子、２は偏光子１の
上面に被着された例えば透光性ポリエステルシー
トからなる保護フイルム、３は偏光子１の下面に
塗布された粘着剤、４は粘着剤３の表面に張付ら
れた離型紙である。 FIG. 1 is a sectional view of a main part showing an example of a punched polarizing plate to be attached to, for example, a TN type liquid crystal display element. In the figure, 1 is a polarizer, 2 is a protective film made of, for example, a translucent polyester sheet, which is adhered to the upper surface of the polarizer 1, 3 is an adhesive applied to the lower surface of the polarizer 1, and 4 is an adhesive. This is a release paper attached to the surface of 3.
このように構成された偏光板は、予め定尺の偏
光板シートをプレス成形法により所定の寸法の大
きさに打抜いて個々に切断分割されて形成され
る。そして、図示しない液晶表示素子に装着させ
る場合には、上面の保護フイルム２と下面側の離
型紙４とを剥がして粘着剤３側の面を液晶表示素
子の外面に接着配置させる。 The polarizing plate configured in this way is formed by punching out a polarizing plate sheet of a predetermined length into predetermined dimensions using a press molding method and cutting the sheet into individual pieces. When attaching to a liquid crystal display element (not shown), the protective film 2 on the upper surface and the release paper 4 on the lower surface are peeled off, and the surface facing the adhesive 3 is adhered to the outer surface of the liquid crystal display element.
しかしながら、上記構成による偏光板におい
て、定尺の偏光板シートにはその保護フイルム上
面の一部に極性、つまり偏光軸もしくは光吸収軸
方向が明記されているが、プレス成形法により
個々の大きさに切断分割されると、その極性が不
明となつてしまい、生産工程で液晶表示素子に接
着させる過程において、方向性が判別できないと
いう欠点を有していた。 However, in the polarizing plate having the above configuration, the polarity, that is, the direction of the polarization axis or the light absorption axis is specified on a part of the upper surface of the protective film of the standard length polarizing plate sheet, but the individual size is determined by the press molding method. When it is cut and divided into parts, its polarity becomes unknown, and it has the disadvantage that its directionality cannot be determined during the process of adhering it to a liquid crystal display element in the production process.
したがつて本発明は、個々に切断分割された偏
光板においても、その極性を容易に判別できるよ
うにした偏光板シートを提供することを目的とし
ている。 Therefore, an object of the present invention is to provide a polarizing plate sheet in which the polarity of the polarizing plate can be easily determined even when the polarizing plate is individually cut and divided.
このような目的を達成するために本発明は、保
護フイルムに偏光子の極性を明示する表示を縦続
および並列に繰返えされるパターンで形成するも
のである。以下図面を用いて本発明を詳細に説明
する。 In order to achieve such an object, the present invention forms a pattern that clearly indicates the polarity of a polarizer on a protective film in a pattern that is repeated in series and in parallel. The present invention will be explained in detail below using the drawings.
第２図ａ，ｂは本発明による偏光板シートの一
例を説明するための偏光板シートの要部平面図、
要部断面図である。同図において、偏光子１上に
はポリエステルシートからなる偏光子保護フイル
ム５が接着配置され、この保護フイルム５の上面
には極性、つまり偏光子１の偏光軸もしくは光吸
収軸方向の方向性を示す表示、例えば矢印パター
ン６が縦続および並列に繰返えされたパターンが
印刷塗布されている。 FIGS. 2a and 2b are plan views of essential parts of a polarizing plate sheet for explaining an example of a polarizing plate sheet according to the present invention,
It is a sectional view of the main part. In the figure, a polarizer protective film 5 made of a polyester sheet is adhesively arranged on the polarizer 1, and the polarity, that is, the directionality of the polarization axis or light absorption axis of the polarizer 1, is shown on the upper surface of the protective film 5. The display shown, for example, a pattern in which the arrow pattern 6 is repeated in cascade and in parallel is printed and applied.
このように構成された偏光板シートによれば、
定尺の偏光子と矢印パターン６を印刷塗布した定
尺の保護フイルムとを偏光子の極性を基準にして
0゜±0.5゜の範囲内でラミネートして形成された定
尺の偏光板シートを、前述したようにプレス成形
法により所定の大きさの形状に切断分割すること
によつて、個々の偏光板上に方向性を示す矢印パ
ターン６が形成された偏光板が得られる。 According to the polarizing plate sheet configured in this way,
A polarizer of a standard length and a protective film of a standard length with the arrow pattern 6 printed on it are used as a reference based on the polarity of the polarizer.
By cutting and dividing a fixed-length polarizing plate sheet laminated within the range of 0° ± 0.5° into predetermined size shapes using the press molding method as described above, individual polarizing plates are produced. A polarizing plate having an arrow pattern 6 indicating directionality formed thereon is obtained.
このような構成によれば、定尺の偏光板シート
の保護フイルムには偏光子の偏光軸または光吸収
軸方向を明示する表示が、縦続および並列に繰返
されるパターンで形成されているので、定尺の偏
光板シートを任意の大きさに分割切断しても、常
に偏光子の偏光軸または光吸収軸方向に明示する
表示が分割切断された偏光板に存在するので偏光
子１の極性、つまり偏光軸もしくは光吸収軸の方
向性が容易に判別することができる。したがつ
て、液晶表示素子への接着工程における極性の判
別検査が不要となり、生産性を大幅に向上させる
ことができる。また、偏光子１が例えば赤、縁色
等の色特性を有する偏光板シートであれば、矢印
パターン６の印刷色を上記各色に対応して選択す
ることによつて、偏光板シートの色分類および管
理等が極めて簡単にできる優れた効果が得られ
る。 According to this configuration, the protective film of the polarizing plate sheet of a fixed length is formed with a pattern that clearly indicates the polarization axis or the light absorption axis direction of the polarizer in a pattern that is repeated in cascade and parallel. Even if a 3-inch polarizing plate sheet is cut into arbitrary sizes, there will always be a display clearly indicating the direction of the polarization axis or light absorption axis of the polarizer on the cut polarizer, so the polarity of the polarizer 1, i.e. The directionality of the polarization axis or the light absorption axis can be easily determined. Therefore, there is no need for a polarity discrimination test in the process of adhering to a liquid crystal display element, and productivity can be greatly improved. In addition, if the polarizer 1 is a polarizing plate sheet having color characteristics such as red or edge color, the color classification of the polarizing plate sheet can be performed by selecting the printing color of the arrow pattern 6 corresponding to each of the above-mentioned colors. Excellent effects can be obtained with extremely easy management and the like.
第３図は本発明による偏光板シートを切断分割
して得られる偏光板の他の実施例を示す要部平面
図である。同図において、切断分割後の保護フイ
ルム７の四角、例えば切欠部の大きさが異なる２
種類のカツト部７ａ，７ｂがそれぞれ設けられて
いる。この場合、これらのカツト部７ａ，７ｂ
は、定尺の偏光板シートから所定の大きさの偏光
板を形成する際、保護フイルム７、図示しない偏
光子１、粘着剤３および離型紙４ともに同一形状
に打抜いて形成される。またこの場合、この保護
フイルム７はTN型液晶表示素子の外形寸法に合
わせて上辺側両角のカツト部７ａは下辺側カツト
部７ｂよりもその切欠部の大きさが小さくなるよ
うに形成されている。このような構成としたと
き、この保護フイルム７の極性、つまり偏光軸も
しくは光吸収軸方向を同図に示したように矢印パ
ターン方向６に予めとり決めることによつて、
個々に切断分割された偏光板をその上辺と下辺と
を間違ることなく正しくTN型液晶表示素子に被
着させることができる。 FIG. 3 is a plan view of essential parts showing another embodiment of a polarizing plate obtained by cutting and dividing a polarizing plate sheet according to the present invention. In the figure, two squares of the protective film 7 after cutting and division, for example, two different sizes of notches, are shown.
Different types of cut portions 7a and 7b are provided, respectively. In this case, these cut portions 7a, 7b
When forming a polarizing plate of a predetermined size from a regular-length polarizing plate sheet, the protective film 7, the polarizer 1 (not shown), the adhesive 3, and the release paper 4 are punched out into the same shape. In this case, the protective film 7 is formed so that the cut portions 7a at both corners of the upper side are smaller than the cut portions 7b on the lower side in accordance with the external dimensions of the TN type liquid crystal display element. . When such a configuration is adopted, by predetermining the polarity of the protective film 7, that is, the direction of the polarization axis or the light absorption axis in the arrow pattern direction 6 as shown in the figure,
It is possible to correctly attach the individually cut and divided polarizing plate to the TN type liquid crystal display element without making any mistake between the upper side and the lower side.
なお、上記実施例においては、偏光板用保護フ
イルムを長方形状とし、また極性の方向を矢印パ
ターンとしたが、本発明はこれに限定されるもの
ではなく、種々の形状のものであつても前述と同
様の効果が得られる。 In the above embodiment, the protective film for the polarizing plate was made into a rectangular shape, and the direction of polarity was made into an arrow pattern, but the present invention is not limited to this, and may be formed into various shapes. The same effect as described above can be obtained.
以上説明したように本発明による偏光板シート
によれば、個々に切断分割された偏光板の極性を
容易に判別でき、これに伴なつて極性判別検査が
不要となり、液晶表示装置の生産性を大幅に向上
させることができる極めて優れた効果が得られ
る。 As explained above, according to the polarizing plate sheet of the present invention, the polarity of the individually cut and divided polarizing plate can be easily determined, thereby eliminating the need for a polarity discrimination test and improving the productivity of liquid crystal display devices. An extremely excellent effect that can be significantly improved is obtained.
第１図は従来の偏光板の一例を示す要部断面
図、第２図ａ，ｂは本発明による偏光板シートの
一実施例を説明するための要部平面図、要部断面
図、第３図は本発明による偏光板シートを切断分
割してなる偏光板を説明するための要部平面図で
ある。
１……偏光子、２……保護フイルム、３……粘
着剤、４……離型紙、５……保護フイルム、６…
…矢印パターン、７……保護フイルム、７ａ……
カツト部。
FIG. 1 is a sectional view of a main part showing an example of a conventional polarizing plate, and FIGS. 2a and 2b are a plan view of a main part, a sectional view of a main part, and FIG. 3 is a plan view of essential parts for explaining a polarizing plate obtained by cutting and dividing a polarizing plate sheet according to the present invention. 1... Polarizer, 2... Protective film, 3... Adhesive, 4... Release paper, 5... Protective film, 6...
...Arrow pattern, 7...Protective film, 7a...
Cut section.
Claims (1)
イルムに前記偏光子の偏光軸または光吸収軸方向
を明示する表示を、縦続および並列に繰返えされ
るパターンで形成したことを特徴とする偏光板シ
ート。1. A polarizing plate, characterized in that a protective film attached to at least one surface of a polarizer is formed with an indication that clearly indicates the direction of the polarization axis or light absorption axis of the polarizer in a pattern that is repeated in tandem and in parallel. sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55005682A JPH0246921B2 (en) | 1980-01-23 | 1980-01-23 | HENKOBANSHIITO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55005682A JPH0246921B2 (en) | 1980-01-23 | 1980-01-23 | HENKOBANSHIITO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56104308A JPS56104308A (en) | 1981-08-20 |
| JPH0246921B2 true JPH0246921B2 (en) | 1990-10-17 |
Family
ID=11617860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55005682A Expired - Lifetime JPH0246921B2 (en) | 1980-01-23 | 1980-01-23 | HENKOBANSHIITO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246921B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0264901U (en) * | 1988-10-31 | 1990-05-16 | ||
| KR100587441B1 (en) * | 1997-06-25 | 2006-09-20 | 미쓰비시 가가꾸 폴리에스테르 필름 가부시키가이샤 | LCD panel surface protection film |
| JP2009056583A (en) * | 2007-08-08 | 2009-03-19 | Nitto Denko Corp | Film piece manufacturing method, film cutting blade, and film piece manufacturing apparatus |
| JP2014089376A (en) * | 2012-10-31 | 2014-05-15 | Dainippon Printing Co Ltd | Light control sheet and light incident part having light control sheet |
| JP6015353B2 (en) * | 2012-10-31 | 2016-10-26 | 大日本印刷株式会社 | Light control sheet and light incident part with light control sheet |
| JP2021149004A (en) * | 2020-03-19 | 2021-09-27 | 住友ベークライト株式会社 | Optical sheet base material |
-
1980
- 1980-01-23 JP JP55005682A patent/JPH0246921B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56104308A (en) | 1981-08-20 |
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