Method for manufacturing liquid crystal display device and liquid crystal display device

Abstract

To improve the reliability of a liquid crystal display device, a liquid crystal display device includes a first substrate a second substrate opposing the first substrate, a liquid crystal layer arranged between the first and second substrates, and a sealing section arranged around the liquid crystal layer. The sealing section includes a member arranged around the liquid crystal layer and extending along an outer edge of the liquid crystal layer in a plan view and a sealing material arranged on both adjacent sides of the member and continuously surrounding a periphery of the liquid crystal layer in a plan view. Further, the first substrate has an oriented film formed on a back surface and a part of the sealing material overlaps a peripheral edge of the oriented film in a thickness direction on a side of the liquid crystal layer of the member.

What is claimed is: 
     
         1 . A liquid crystal display device comprising a first substrate having a first surface, a second substrate having a second surface opposing the first surface of the first substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and a sealing section arranged around the liquid crystal layer and provided between the first substrate and the second substrate,
 wherein the sealing section includes:   a first member arranged around the liquid crystal layer and extending along an outer edge of the liquid crystal layer in a plan view; and   a sealing material arranged on both adjacent sides of the first member and continuously surrounding a periphery of the liquid crystal layer in a plan view,   the first substrate has an oriented film formed on the first surface serving as an interface contacting the liquid crystal layer, and   a part of the sealing material overlaps a peripheral edge of the oriented film in a thickness direction on a side of the liquid crystal layer of the first member.   
     
     
         2 . The liquid crystal display device according to  claim 1 ,
 wherein the sealing material has a first portion arranged on a side of the liquid crystal layer of the first member and a second portion arranged on an opposite side of the liquid crystal layer of the first member, and   a width of the second portion is 25% or more of a width of the entire sealing section.   
     
     
         3 . The liquid crystal display device according to  claim 2 ,
 wherein a width of the first portion is 25% or more of a width of the entire sealing section.   
     
     
         4 . The liquid crystal display device according to  claim 1 ,
 wherein the first member contacts the first substrate, and   the sealing material exists between the first member and the second substrate.   
     
     
         5 . The liquid crystal display device according to  claim 1 ,
 wherein the sealing section further has a second member arranged between the first member and the liquid crystal layer and extending along the first member, and   the sealing material is arranged on both adjacent sides of the first member and on both adjacent sides of the second member.   
     
     
         6 . The liquid crystal display device according to  claim 5 ,
 wherein the first member and the second member are arranged on opposite sides to each other with a center line in a width direction of the sealing section sandwiched therebetween.   
     
     
         7 . The liquid crystal display device according to  claim 5 ,
 wherein the sealing material has a first portion arranged on a side of the liquid crystal layer of the second member and a second portion arranged on an opposite side of the liquid crystal layer of the first member, and   a width of the second portion is 25% or more of a width of the entire sealing section.   
     
     
         8 . The liquid crystal display device according to  claim 7 ,
 wherein a width of the first portion is 25% or more of a width of the entire sealing section.   
     
     
         9 . The liquid crystal display device according to  claim 5 ,
 wherein the first member and the second member contact the first substrate, and   the sealing material exists between the first member and the second substrate and between the second member and the second substrate.   
     
     
         10 . A method for manufacturing a liquid crystal display device, the method comprising:
 (a) a step of forming a first member extending along an outer edge of a display region in a sealing section surrounding a periphery of the display region, and then forming an oriented film on a side of the display region of the first member, on a first surface of a first substrate;   (b) a step of applying a sealing material to the sealing section after the step (a);   (c) a step of making a second substrate having a second surface opposing the first surface and the first substrate overlap each other via the sealing material after the step (b); and   (d) a step of curing the sealing material to adhesively fix the first substrate and the second substrate,   wherein the step (a) includes a step of damping spreading of the oriented film by the first member, and   in the step (b), the sealing material is applied so as to stride over the first member in a width direction of the first member.   
     
     
         11 . The method for manufacturing the liquid crystal display device according to  claim 10 ,
 wherein, in the step (b), the sealing material is discharged while a center of an opening of a nozzle for applying the sealing material is positioned above the first member.   
     
     
         12 . The method for manufacturing the liquid crystal display device according to  claim 10 ,
 wherein, in the step (c), the first member and the second member do not contact each other.   
     
     
         13 . A method for manufacturing a liquid crystal display device, comprising:
 (a) a step of forming a first member extending along an outer edge of a display region and a second member extending along the first member between the first member and the display region in a sealing section surrounding a periphery of the display region, and then forming an oriented film on a side of the display region of the second member, on a first surface of a first substrate;   (b) a step of applying a sealing material to the sealing section after the step (a);   (c) a step of making a second substrate having a second surface opposing the first surface and the first substrate overlap each other via the sealing material after the step (b); and   (d) a step of curing the sealing material to adhesively fix the first substrate and the second substrate,   wherein the step (a) includes a step of damping spreading of the oriented film by the second member, and   in the step (b), the sealing material is applied so as to stride over the first member and the second member in a width direction of the first member and the second member.   
     
     
         14 . The method for manufacturing the liquid crystal display device according to  claim 13 ,
 wherein the first member and the second member are formed on opposite sides to each other with a center line in a width direction of the sealing section sandwiched therebetween.   
     
     
         15 . The method for manufacturing the liquid crystal display device according to  claim 14 ,
 wherein, in the step (b), the sealing material is discharged while a center of an opening of a nozzle for applying the sealing material is positioned above a region between the first member and the second member.