ADHESIVE COMPOSITION FOR TOUCH PANEL AND ADHESIVE FILM

Advantages and features of the present invention, achieve the appended drawing method and an electronic component connected to the reference surface with specifically carry activitycopyright will in the embodiment. In the embodiment in the present invention refers to hereinafter however limited to various different rather than the disclosure are embodied in the form of percussion, in the embodiment of the present invention disclosure is completely only the are and can be utilized, the present invention is provided to a target area of the invention completely for alerting the person with skill in the art in categories to which ball number, defined by category of the present invention refers to claim only disclosed. Throughout the specification the same references refer to the same components.

Hereinafter with reference to the attached drawing number composition and adhesive sheet of the present invention preferred embodiment according to touch panel bonded detailed described as follows.

Weight average molecular weight of resin and resin mixed with an adhesive sheet formed from a silicone composition different number 1 number 2 touch panel and liquid crystal module attached between applied shear cling performance and step absorbent by a goniophotometer.

For touch panel of the present invention composition in weight average molecular weight of 1000 - 200 number 1 resin and a weight average molecular weight adhesive number 1000, 000 - 3000, 000, 000 in number 2 resin without using a tool.

Each of the acrylic copolymer resin number 2 number 1 resin and resin, a (meta) acrylate monomer mixture including a cyclic structure, and optical disclosure number of resin polymerized from number machie of are disclosed.

Different acrylic copolymer resin has a weight average molecular weight of said number 1 resin and number 2 resin because, when workability and step absorbent excellent effects in these mixing flow tides.

(Meta) acrylate monomer mixture including said number 1 resin having a cyclic structure, and optical disclosure number formed by resin polymerized from a number machie of, weight average molecular weight of 1000, 000 - 3000, 000 in acrylic copolymer resin are disclosed.

Such high molecular weight non-number by photopolymerisation having acrylic copolymer resin make shot areas can be tank, the pressure on the polymerization and polymerization at room temperature for easier to number, also disclosed are disclosed.

(Meta) acrylate having a cyclic structure of a monomer mixture comprising said.

Said lung stipendiary hour ethyl 2 - (meta) acrylate having a cyclic structure (meta) acrylate, [thok thread [ley [thu lung stipend city (meta) acrylate, 3, 3, 5 - tree (meta) acrylate [heyk it buys with methyl interface, cycle (meta) acrylate [lik tree ethyl propane foam, benzyl (meth) acrylate, (meth) acrylate methacrylated, cyclohexyl (meth) acrylate can be more species during 1.

Said number 1 to 100% by weight of a monomer mixture resin, (meta) acrylate having a cyclic structure can be 5 - 50% by weight.

(Meta) acrylate content of less than 5% by weight when, adhesive sheet of cohesion is not completed and the pin is portable door number point cured adhesive. On the contrary, 50% by weight content is exceeded, curing of an adhesive sheet selected from the group consisting of door number since the small increased too much and peel strength measured disclosed.

Said (meta) acrylate having a cyclic structure of a monomer mixture in addition, hydrophilic monomer having a carboxyl group as a monomer having hydroxy groups can be monomer having a functional group. 4 - hydroxy butyl acrylate monomer having a functional group as hydrophilic (4 a-hydroxybutyl acrylate, 4 a-HBA) can be like. In addition, adhesive number (softness) can impart a soft composition C6 1 - 22 alkyl (meth) acrylate comprises a branched alkyl groups can be. Said alkyl (meth) acrylate is 1 to 22 carbon atoms branched enables to isopropyl (meth) acrylate, butyl (meth) acrylate t -, sec - butyl (meth) acrylate, 2 - ethylhexyl (meth) acrylate, 2 - ethyl butyl (meth) acrylate, octyl (meth) acrylate isocyanate, nonyl (meth) acrylate comprising at least one of isocyanate can be 1.

In view of the volatile reaction temperature and drying time is approximately 100 °C hereinafter number machie of said temperature preferably in number for phosphorus. The content of the aqueous adhesive composition properties machie of number number can to output the taken, number 1 resin 100 parts by weight, can be approximately 1 - 10 part by weight. Machie of number examples of ethyl ether, acetone, acetonitrile, petroleum ether, isopropyl alcohol, methanol, ethanol, n - pentane, n - hexane, benzene, dichloro methane, process for methane, methyl acetate, ethyl acetate, ethylene glycol dimethyl ether, methyl ethyl ketone, tree chloro methanes, process for methane, 1, 2 - dichloroethane etc..

Disclosure number is of constant light quantity of said light cured reaction when the reaction material disclosure are disclosed. Optical disclosure number of a phosphorus compound is benzo, hydroxy ketone-based compound, amino ketone orgin compounds, phosphine oxide-based compound comprising at least 1 species can be.

Disclosure number is number 1 resin 100 parts by weight of said light, 0. 1 - 10 parts by weight but, the one number are not disclosed.

As aforementioned, in acrylic copolymer resin has a weight average molecular weight of 1000, 000 - 3000, 000 number 1 resin, thus cohesion at the normal temperature, excellent effects in processability flow tides. In addition, mechanical strength and stable properties can be in the range of 1000, 000 - 3000, 000 under public affairs number, high temperature (85 °C), humidity (85%) excellent durability even, clouding billion number generation can be heated.

(Meta) acrylate monomer mixture including said number 2 resin having a cyclic structure, and optical disclosure number formed by resin polymerized from a number machie of, weight average molecular weight of 1000 - 200, 000 in acrylic copolymer resin are disclosed. Said number 2 resin has properties of ductile at the hot 85 °C. The, number 1 number 2 resin mixed resin formed cohesive sheet excellent step absorbent by a goniophotometer.

Mixing said (meta) acrylate having a cyclic structure comprising said monomer. Said (meta) acrylate having a cyclic structure, number and optical disclosure number thereof can such as is described above for organic.

Said number 2 to 100% by weight of a monomer mixture resin, (meta) acrylate having a cyclic structure can be 50 - 90% by weight.

(Meta) acrylate content of less than 50% by weight when, together with the inserted flexible (softness) of an adhesive sheet excellent step absorbent insufficient disclosed. On the contrary, content is exceeded 90% by weight, curing of an adhesive sheet selected from the group consisting of door number since the small increased too much and peel strength measured disclosed.

Adhesive number number 1 resin 100 parts by weight of said composition, preferably 5 - 20 parts by weight of resin including said number 2. Said number 1 number 2 resin into the resin, filler can be of an adhesive sheet having a latticed performance and ensure a high processibility. Number 2 resin content of 5 - 20 parts by weight of the variation, step absorbent selected from the group consisting of an adhesive sheet can be.

The aforementioned resin composition of the present invention number 1 number 2 resin and mixed into the polymer by the extrusion molding method such as a range of composition ratio number bath 1308. transparent sheet. Acrylic copolymer resin about 90% or more storehouse permeability including cohesive sheet while maintaining transparency, heat resistance, bending strength and hardness 0.5 or 1. The, touch panel to which an adhesive sheet applied to a glass substrate has excellent optical performance can replace the touch panel to, cling performance and step exhibits excellent in effect.

The present invention according to weight average molecular weight of 1000 - 200 in number 1 resin and weight average molecular weight of cohesive sheet 1000, 000 - 3000, 000, 000 in number 2 resin mixed with adhesive number comprising a cured article formed from a silicone composition. The, said number 1 resin and (meta) acrylate monomer mixture including number 2 resin each having a cyclic structure, machie of number polymerized from acrylic copolymer resin efined disclosure number and aforementioned.

Said cohesive sheet step absorbent implementation being 10 - 30%.

Adhesive sheet a total thickness of said adhesive sheet can absorb the step implementation being 10 - 30% contrast ratio. I.e., measured by the formula 1 with both absorbent implementation being 10 - 30%. Said step of an adhesive sheet having a latticed structure also said absorbent applied by display exhibits performance and step absorption.

[Formula 1]

Step (%)=(total thickness of an adhesive sheet on the base etched /) × 100 absorbent

Said adhesive sheet has a thickness of 50 - 200 micro m implementation being.

Number timing thickness range of said cohesive sheet can be stably maintained. If less than 50 micro m thickness, thickness of an adhesive sheet and absorbent effect is insufficient step thinned too, is exceeded 200 micro m, transparency is somewhat of an adhesive sheet may cause a decrease in disclosed.

The touch panel bonded number composition and adhesive sheet into the tank by a specific heat in the embodiment is as follows.

1. Number bath and as a result of an adhesive sheet

Number attainments

2 - isocyanate ethyl [heyk[heyk] Thread arc relay [thu[thu] (EHA) on step neel arc relay [thu as a monomer mixture (IBOA), 4 - hydroxy butyl acrylate (4 a-hydroxybutyl acrylate, 4 a-HBA), methanol as number machie of, respectively [table 1] number 2 to a tolerable optical disclosure number number including number 1 resin and resin was high pressure liquid coolant. The, number 1 number 2 resin a weight average molecular weight based on resin and efined [table 1].

[Table 1]

Said number 1 number 2 resin (%) total 100 with respect to the excellent weight of a monomer mixture of a monomer mixture, have described as % weight of each monomer, said machie of number, the content of 100 parts by weight of a monomer mixture based on parts by weight of optical disclosure number are described.

In the embodiment 1 - 2

[Table 2] to a tolerable number 2 resin and resin after mixing said number 1, was applied onto the base film. UV lamp irradiating said coating portions 10 minutes 100 micro m thickness of pressure sensitive adhesive sheet number was high pressure liquid coolant.

Comparison example 1 - 2

[Table 2] to a resin or resin composition is applied onto a film including said number 1 number 2 was tolerable. UV lamp irradiating said coating portions 10 minutes 100 micro m thickness of pressure sensitive adhesive sheet number was high pressure liquid coolant.

[Table 2]

Step absorbent: is formed on absorbent (%) [type 1] for a long time.

[Formula 1]

Absorbent (%)=(total thickness of an adhesive sheet on the base etched /) step? 100

Measuring tack energy: adhesive film prepared by the number 1 inch width, length and cut into 10 cm, 30 minutes after a UTM (Universal Testing Machine) for decreasing were measured.

Table 1 and table 2 when results of reference, said number 1 number 2 resin substrate to resin component includes excellent step absorptive and cling performance by a goniophotometer.

On the contrary, the step number 2 absorption strength of an adhesive sheet are formed of resin, lower than the result of the wafer shown in the embodiment 1, 2. In addition, in the embodiment 1, 2 step number 1 resin formed cohesive sheet only showed absorption properties and cling performance both lower than is numerically.

The, number composition and adhesive sheet has a weight average molecular weight of the present invention touch panel bonded resin by mixing the different number 1 resin and number 2, is existing 1 is applied to the adhesive resin exhibits excellent effects in number composition and adhesive sheet than cling performance and step absorbent.

Or more of the present invention in the embodiment described with reference to the attached drawing but, rather than limited to the present invention refers to said in the embodiment are different in various forms can be tank number, in the present invention is technical idea of the present invention is provided to essential features or person with skill in the art without changing other specific embodiment can form can be understand are disclosed. In the embodiment described above the exemplary non-limiting all sides are understood to which must substrate.