Liquid crystal display device

Abstract

The present invention mechanically protects a surface of a miniaturized liquid crystal display device for mobile phone or the like without deteriorating image quality and without increasing a thickness of a whole display device. To achieve such an object, in the present invention, a liquid crystal display panel is constituted of a TFT substrate and a color filter substrate, a lower polarizer is adhered to a lower surface of the TFT substrate, and an upper polarizer is adhered to an upper surface of the color filter substrate. A face plate is adhered to the upper polarizer using an acrylic adhesive material which is cured by ultraviolet rays. For enhancing strength and adhesion property of the face plate, corners and side portions of the face plate are chamfered. By making a profile of the face plate smaller than a profile of the upper polarizer, the adhesion property of the face plate is enhanced. The present invention can protect the surface of the liquid crystal display panel without deteriorating image quality and without largely increasing a thickness of the display device.

1 . A liquid crystal display device including a liquid crystal display panel which has a TFT substrate on which pixel electrodes and TFTs for controlling signals to the pixel electrodes are arranged in a matrix array and a color filter substrate on which color filters corresponding to the pixel electrodes are formed,
 a liquid crystal is sandwiched between the TFT substrate and the color filter substrate,   the color filters are arranged on the liquid crystal side of color filter substrate, wherein   an upper polarizer is adhered to an upper surface of the color filter substrate, a face plate is adhered to an upper surface of the upper polarizer by using adhesive material,   the adhesive material is an ultraviolet curing resin,   the ultraviolet curing resin is in a liquid state before cured by ultraviolet rays.   the upper polarizer and the face plate are adhered to each other using an ultraviolet curing resin.   
     
     
         2 . A liquid crystal display device according to  claim 1 , wherein the ultraviolet curing resin is a liquid containing an acrylic resin at the time of initially adhering the face plate and the upper polarizer adhered to the liquid crystal display panel. 
     
     
         3 . A liquid crystal display device according to  claim 1 , wherein the ultraviolet curing resin is a liquid containing an acrylic oligomer at the time of initially adhering the face plate and the upper polarizer adhered to the liquid crystal display panel. 
     
     
         4 . A liquid crystal display device according to  claim 1 ,
 an upper polarizer is adhered to the color filter substrate, a face plate made of glass is adhered to the upper polarizer, and a corner portion of the face plate is chamfered with a cutting size of 0.3 mm or more.