Adhesive for laminating optical functional film, optical functional film with adhesive and method for manufacturing the same
A functional, adhesive technology, applied in the direction of film/sheet adhesive, acid copolymer adhesive, adhesive type, etc., capable of solving arching or peeling, reduced retention, and polarizer contamination Adhesives and other problems can be achieved to achieve efficient manufacturing and less light leakage
Active Publication Date: 2011-06-15
LINTEC CORP
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Problems solved by technology
However, the addition of low-molecular-weight substances not only causes contamination of the adhesive when peeling off the polarizer, but also reduces the holding power and tends to cause arching or peeling over time
Method used
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Effect test
Embodiment 1～9 and comparative example 1、2
[0131] (1) Production of polarizer with adhesive
[0132] The adhesive material (a) of the composition shown in Table 1 was prepared, and coated on a peeling film made of polyethylene terephthalate (manufactured by Lintec Co., Ltd. "SP- On the release layer of PET 3811"), the thickness after drying was 25 μm, and it was dried at 90° C. for 1 minute to form an adhesive material layer.
[0133] Then, a polarizing plate formed of a polarizing film with a discotic liquid crystal layer, and the polarizing film and the viewing angle expansion film integrally formed, was bonded so that the adhesive material layer was in contact with the discotic liquid crystal layer. After bonding for 30 minutes, ultraviolet rays (UV) were irradiated from the side of the release film under the following conditions, and then cured for 10 days at 23°C and 50% relative humidity to prepare a polarizer with an adhesive. The thickness of the adhesive layer was 25 μm.
[0134] UV irradiation conditions
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Abstract
The present invention relates to an adhesive for bonding optics functional film, which can bond with good durability under high-temperature and high-humidity environment, and an image display apparatus is lighttight. The adhesive is made by irradiating active energy radial to (A) crylic acid polymers containing carboxylic monocase which composing ratio is above to 0.5 percent by quality and (B) adhesive material of active energe radial solidification type compound. The adhesive adhibits with alkali-free glass and the adhesive area is 100mm2(10mm*10mm). When measuring cutting load with the cutting speed is 0.1mm / min, the maximal cutting load for meeting an emergency of 4000 percent is above to 50N, the storage spring modulus (G') is 0.3 to 15MPa under the temperature of 23 DEG C.
Description
technical field [0001] The present invention relates to an adhesive for an optical functional film, an optical functional film with an adhesive, and a method for producing the same. More specifically, the present invention relates to a polarizer suitable for a polarizer, especially a polarizer integrated with a viewing angle expansion film or the like or a phase difference plate laminated on the polarizer, and to a method that can make the polarizer Adhesive for optically functional films that has good durability in bonding to liquid crystal cells or retardation plates, and the resulting liquid crystal display device has characteristics such as low light leakage even in high-temperature and high-humidity environments. An optically functional thin film of an agent and a manufacturing method thereof. Background technique [0002] Conventionally, when bonding sheets made of organic materials to glass, ceramics, metals, etc., with the passage of time, the ends of the sheets wer...
Claims
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IPC IPC(8): C09J133/02G02F1/1333
CPCC09J7/385C09J133/08C09J133/10C09J2203/318
Inventor 永元公市草间健太郎又野仁早川基行
Owner LINTEC CORP