JPH0445422A - Protective film for liquid crystal display device - Google Patents
Protective film for liquid crystal display deviceInfo
- Publication number
- JPH0445422A JPH0445422A JP2154370A JP15437090A JPH0445422A JP H0445422 A JPH0445422 A JP H0445422A JP 2154370 A JP2154370 A JP 2154370A JP 15437090 A JP15437090 A JP 15437090A JP H0445422 A JPH0445422 A JP H0445422A
- Authority
- JP
- Japan
- Prior art keywords
- display device
- protective film
- liquid crystal
- crystal display
- polarizing plates
- 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
- 230000001681 protective effect Effects 0.000 title claims abstract description 30
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 24
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 6
- 230000002950 deficient Effects 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は液晶表示装置外面の保護膜に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a protective film for the outer surface of a liquid crystal display device.
液晶表示装置は近年その用途が広がり、生産量が増大し
ている。従来、液晶表示装置に使う偏光板の保護膜は、
有色フィルムや白濁したフィルムを使用していた。従っ
て、製作途中の液晶表示装置は、保護膜によって保護さ
れてはいるが、保護膜の着色や白濁によって、表示部分
がはっきりとは見えない状態になっていた。The uses of liquid crystal display devices have expanded in recent years, and the production volume has increased. Conventionally, the protective film for polarizing plates used in liquid crystal display devices is
Colored or cloudy film was used. Therefore, although a liquid crystal display device in the process of being manufactured is protected by a protective film, the display portion cannot be clearly seen due to the coloration or cloudiness of the protective film.
液晶表示装置の表示検査や外観検査をするとき、保護膜
の有色性や白濁によって、検査の誤認、見落しがある。When performing a display inspection or appearance inspection of a liquid crystal display device, misunderstandings or oversights may occur due to the colored nature or cloudiness of the protective film.
正確な検査をするためには、保護膜を剥いで検査をする
必要があった。しかも、数回の検査を必要とする場合が
ある。そのため、かなりの工数負担になってしまう。更
に、保護膜を剥ぐ時に発生する静電気が液晶表示装置に
悪影響を及ぼし、表示装置が不良になってしまうことが
ある。本発明は上述の問題を解決し、効率的な検査と不
良発生率の低減を目的としたものである。。In order to conduct an accurate test, it was necessary to remove the protective film. Moreover, several tests may be required. This results in a considerable amount of man-hours. Furthermore, static electricity generated when the protective film is removed may have an adverse effect on the liquid crystal display device, resulting in the display device being defective. The present invention is aimed at solving the above-mentioned problems and achieving efficient inspection and reducing the defective rate. .
本発明は、液晶を挟持して対向する一対の透明基板の外
面に偏光板を備えてなる液晶表示装置外面の保ｔｉ膜が
、前記液晶表示装置の少なくとも表示エリア内を透明率
８０％以上の透明性を有することを特徴として、前述の
課題を解決した。The present invention provides an anti-Ti film on the outer surface of a liquid crystal display device comprising a polarizing plate on the outer surfaces of a pair of transparent substrates facing each other with a liquid crystal sandwiched between them. The above-mentioned problem was solved by having transparency.
以下に実用例をもって、本発明の詳細な説明する。 The present invention will be described in detail below with reference to practical examples.
実施例１
第１図に、液晶表示装置と本発明による保護膜の一実施
例を示す。一対のガラス基板ｌ、１間に液晶層２を介在
させ、基板の上下に偏光板３，４を貼付けて液晶表示装
置を構成した。偏光板３上に、透過率９０％、厚さ３０
μｍのほぼ無色透明なポリエチレンでできた保護膜５が
貼付けられている。Example 1 FIG. 1 shows an example of a liquid crystal display device and a protective film according to the present invention. A liquid crystal display device was constructed by interposing a liquid crystal layer 2 between a pair of glass substrates 1 and 1, and pasting polarizing plates 3 and 4 on the top and bottom of the substrates. On the polarizing plate 3, the transmittance is 90% and the thickness is 30%.
A protective film 5 made of almost colorless and transparent polyethylene of μm size is attached.
この液晶表示装置を、検査工程において保護膜を剥離し
ないで検査をした。その結果、保護膜を剥離して検査し
ていた従来の方法に比べて、不良捕捉率に変化が無く良
好な検査ができたが、工数は大幅な削減ができた。また
保護膜を剥離することにより発生する静電気は、剥離工
程を除去したことにより検査工程における不良発生原因
を除去することができた。This liquid crystal display device was tested without removing the protective film during the test process. As a result, compared to the conventional method of inspecting by peeling off the protective film, we were able to perform better inspections with no change in defect capture rate, but the number of man-hours was significantly reduced. Furthermore, by eliminating the stripping process, static electricity generated by peeling off the protective film can be eliminated as a cause of defects in the inspection process.
実施例２ 第２図に本発明による保護膜の他の実施例を示す。Example 2 FIG. 2 shows another embodiment of the protective film according to the present invention.
実施例１と同様に製造した液晶表示装置の偏光板３上に
、表示エリア外を黒色で着色した実施例１と同様な保護
膜が貼付つけられている。A protective film similar to that of Example 1 in which the outside of the display area was colored black was pasted on the polarizing plate 3 of a liquid crystal display device manufactured in the same manner as in Example 1.
この液晶表示装置を実施例１と同様に検査したところ、
同様な結果が得られた。本実施例の保護膜は部分的に着
色されているので、保護膜の有無が判別でき、表示装置
を機器に組み込むとき、または使用するときに、保護膜
の剥ぎ忘れかない。When this liquid crystal display device was inspected in the same manner as in Example 1,
Similar results were obtained. Since the protective film of this embodiment is partially colored, the presence or absence of the protective film can be determined, and there is no need to forget to remove the protective film when incorporating the display device into equipment or when using it.
本実用例では、表示エリア外の全周に着色したが、−辺
あるいは一角等、保護膜の有無を判別を容易にする範囲
を着色しても同じ効果が得られる。In this practical example, the entire periphery outside the display area is colored, but the same effect can be obtained by coloring a range such as the negative side or one corner that makes it easier to determine whether a protective film is present or not.
また、着色する色についても、判別できる色であれば、
同じ効果が得られる。Also, regarding the color to be colored, as long as it is a distinguishable color,
You can get the same effect.
本発明の液晶表示装置用保護膜により、液晶表示装置を
、検査工程において保護膜を剥離しないで検査すること
ができる。その結果、保護膜を剥離して検査していた従
来の方法に比べて、不良捕捉率は変化が無く良好な検査
ができるのみならず、検査工数を大幅に削減することが
できる。また保護膜を剥離することにより発生する静電
気は、剥離工程を除去したことにより検査工程における
不良発生原因を除去することができる。また、保護膜が
製造工程の最終段階までついていることから、製造工程
途中で偏光板等にキズやヨゴレが付くことがなく、表示
装置表面の欠点による偏光板等の貼替も低減することが
できる。With the protective film for a liquid crystal display device of the present invention, a liquid crystal display device can be inspected without peeling off the protective film in the testing process. As a result, compared to the conventional method of inspecting by peeling off the protective film, not only is the defect capture rate unchanged and good inspection is possible, but the number of inspection steps can be significantly reduced. Furthermore, since the stripping step is eliminated, static electricity generated by stripping the protective film can be eliminated as a cause of defects in the inspection step. In addition, since the protective film is applied until the final stage of the manufacturing process, the polarizing plate, etc. will not be scratched or stained during the manufacturing process, and the need to replace the polarizing plate, etc. due to defects on the surface of the display device can be reduced. can.
第１図、及び第２図は、液晶表示装置及び本発明の液晶
表示装置用保護膜の各実用例を示す図である。
１・・・透明基板
２・・・液晶層
３・・・偏光板
４・・・偏光板
５・・・保護膜
６・・・着色部分
以上FIG. 1 and FIG. 2 are diagrams showing practical examples of a liquid crystal display device and a protective film for a liquid crystal display device of the present invention. 1... Transparent substrate 2... Liquid crystal layer 3... Polarizing plate 4... Polarizing plate 5... Protective film 6... Colored part or more
Claims (1)
を備えてなる液晶表示装置外面の保護膜が、前記液晶表
示装置の少なくとも表示エリア内を透明率８０％以上の
透明性を有することを特徴とする液晶表示装置用保護膜
。A protective film on the outer surface of a liquid crystal display device, which is formed by polarizing plates on the outer surfaces of a pair of transparent substrates facing each other with a liquid crystal sandwiched therebetween, has transparency with a transparency rate of 80% or more at least within the display area of the liquid crystal display device. A protective film for liquid crystal display devices characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2154370A JP2913776B2 (en) | 1990-06-13 | 1990-06-13 | Manufacturing method of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2154370A JP2913776B2 (en) | 1990-06-13 | 1990-06-13 | Manufacturing method of liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0445422A true JPH0445422A (en) | 1992-02-14 |
| JP2913776B2 JP2913776B2 (en) | 1999-06-28 |
Family
ID=15582678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2154370A Expired - Fee Related JP2913776B2 (en) | 1990-06-13 | 1990-06-13 | Manufacturing method of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2913776B2 (en) |
-
1990
- 1990-06-13 JP JP2154370A patent/JP2913776B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2913776B2 (en) | 1999-06-28 |
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