Patent application number | Description | Published |
20090290215 | Iodine-Type Polarizer, Polarizing Place and Method for Producing Thereof - There is provided a method for producing a polarizer having improved cross transmittance. The method for producing a polarizer includes: dyeing a polyvinyl alcohol (PVA)-based film with molecular iodine by immersing the PVA-based film in an aqueous iodine solution (a dyeing step); absorbing the molecular iodine into the PVA-based film using an aqueous boric acid solution (a cross-linking step); arranging the molecular iodine in the certain direction by stretching the PVA-based film in a certain direction (an stretching step); and drying, in an oven, the PVA-based film in which the molecular iodine is oriented; wherein a phosphate compound is added to the iodine aqueous solution (the dyeing step) or the aqueous boric acid solution(the stretching step) so that a weight ratio of the boric acid:the phosphate compound is in a range of 1:0.1 to 1:10. | 11-26-2009 |
20090306293 | Polarizer Having Excellent Durability, Polarizing Plate and Methods of Producing the Polarizer and the Polarizing Plate - There is provided a method of producing a polyvinyl alcohol (PVA) film polarizer having an excellent durability, the method comprising dyeing, cross-linking, stretching, and drying, wherein additives containing phosphorus is inputted into one or more of the dyeing, the cross-linking, and the stretching. In this case, the additives containing phosphorus may be selected from a group consisting of a phosphoric acid, potassium phosphate monobasic, potassium phosphate dibasic, magnesium phosphate dibasic, sodium phosphate monobasic, and ammonium phosphate monobasic. An amount of the additives containing phosphorus in an added solution may be 0.01 to 15 wt %. As described above, when inputting the additives containing phosphorus while producing a polarizer, cross-linking between iodine and a polymer matrix becomes strong due to the phosphorus contained in the additives, thereby producing a polarizer having an excellent durability, and particularly, an excellent thermal stability. | 12-10-2009 |
20110300387 | MODIFIED POLYVINYL ALCOHOL RESINS AND ADHESIVE, POLARIZER, AND DISPLAY DEVICE CONTAINING THE SAME - Provided are a modified polyvinyl alcohol-based resin with an acrylic group introduced thereto and including a hydroxyl group formed during the introduction of the acrylic group, an adhesive including the modified polyvinyl alcohol-based resin having excellent adhesion, humidity resistance, and water resistance, an adhesive including a polyvinyl alcohol-based resin, and a compound having an epoxy group, and an acrylic group, a polarizing plate and an image display device including the adhesive. The adhesive for a polarizing plate according to an embodiment of the present invention has excellent adhesion, humidity resistance, and water resistance as well as having excellent solubility with respect to water and an increase in adhesion while physical properties of a typical polyvinyl alcohol-based resin are maintained. | 12-08-2011 |
20110310481 | POLARIZATION DEVICE, POLARIZATION PLATE AND VIDEO DISPLAY DEVICE HAVING SUPERIOR DURABILITY AND HEAT RESISTANCE - Provided are polarizer, polarizing plate, and image display device having excellent durability and heat resistance in which contents of zinc, boron, and iodine in the polarizer are controlled in a specific range. According to an embodiment of the present invention, a polarizer having a value of zinc content (wt %)×boron content (wt %)/iodine content (wt %) in a range of about 0.1 to about 3.0 in all positions in which a depth (D) from a surface to a center of the polarizer is 0≦D≦200 nm, polarizing plate and image display device including the polarizer are provided. The polarizer, polarizing plate, and image display device according to the present invention have excellent durability and heat resistance in which initial cross transmittance and color are maintained and transmittance, degree of polarization, and color are maintained even under high temperature conditions. | 12-22-2011 |
20120206804 | POLARIZING PLATE, FABRICATION METHOD THEREOF, AND DISPLAY DEVICE USING THE SAME - A polarizing plate, a fabrication method thereof, and a display device using the same are provided. The polarizing plate includes a polarizing element, a first adhesive layer formed on one surface of the polarizing element, a second adhesive layer formed on the other surface of the polarizing element, a protective film attached to an upper portion of the first adhesive layer, a bonding layer attached to a lower portion of the second adhesive layer, and a luminance enhancement film attached to the bonding layer. | 08-16-2012 |
20140160405 | POLARIZING PLATE - Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance. | 06-12-2014 |
20140160406 | POLARIZING PLATE - Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling of the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance. | 06-12-2014 |
20140168580 | POLARIZING PLATE - Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance. | 06-19-2014 |
20140204317 | POLARIZING PLATE - Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance. | 07-24-2014 |
20140220263 | POLARIZING PLATE, FABRICATION METHOD THEREOF, AND DISPLAY DVICE USING THE SAME - A polarizing plate, a fabrication method thereof, and a display device using the same are provided. The polarizing plate includes a polarizing element, a first adhesive layer formed on one surface of the polarizing element, a second adhesive layer formed on the other surface of the polarizing element, a protective film attached to an upper portion of the first adhesive layer, a bonding layer attached to a lower portion of the second adhesive layer, and a luminance enhancement film attached to the bonding layer. | 08-07-2014 |
20140240647 | POLARIZING PLATE - Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance. | 08-28-2014 |