Patent ID: 9134557
Filing Date: 2015-09-15
Classification: G02F

Abstract:
1. A back frame of a flat panel display device, wherein the back frame comprises at least two assembling pieces, the at least two assembling pieces being joined to form the back frame, the back frame further comprises a bracing piece that is fixed to the assembling pieces, wherein the at least two assembling pieces comprise at least two primary assembling pieces and at least one secondary assembling piece, the at least two primary assembling pieces are directly jointed with each other in an end-to-end manner to form a closed main frame structure of the back frame and define an opening wholly surrounded by the closed main frame structure, the at least one secondary assembling piece is arranged in the opening to divide the opening into a plurality of small openings, the bracing piece is arranged in the opening, each of the assembling pieces is mountable to at least two different positions of one end of the bracing piece in a lengthwise direction of the bracing piece, each of the assembling pieces is selectively mounted to one of the at least two different positions of one end of the bracing piece, and other different positions of one end of the bracing piece are idle; and the bracing piece is mountable to at least two different positions of one end of each of the assembling pieces in a lengthwise direction of the assembling piece, the bracing piece is selectively mounted to one of the at least two different positions of one end of each of the assembling pieces, and other different positions of one end of each of the assembling pieces are idle; wherein the at least two primary assembling pieces comprise a first primary assembling piece, a second primary assembling piece, a third primary assembling piece and a fourth primary assembling piece, an end of the first primary assembling piece is joined to an end of the second primary assembling piece, another end of the second primary assembling piece is joined to an end of the third primary assembling piece, another end of the third primary assembling piece is joined to an end of the fourth primary assembling piece, and another end of the fourth primary assembling piece is joined to another end of the first primary assembling piece in order to form the rectangular main frame structure; wherein both ends of the first primary assembling piece have at least two joint sections that are arranged to space from each other in a lengthwise direction of the first primary assembling piece, both ends of the third primary assembling piece have at least two joint sections that are arranged to space from each other in a lengthwise direction of the third primary assembling piece, each of the joint sections has a structure mating any end of both ends of the second primary assembling piece or any end of both ends of the fourth primary assembling piece, the first primary assembling piece using one of the joint sections to join the corresponding end of the second primary assembling piece, the first primary assembling piece using another one of the joint sections to join the corresponding end of the fourth primary assembling piece, other joint sections of the first primary assembling piece that are located outward of the joining location of both the second primary assembling piece and the fourth primary assembling piece are trimmed off, and the third primary assembling piece using one of the joint sections to join the corresponding another end of the second primary assembling piece, the third primary assembling piece using another one of the joint sections to join the corresponding another end of the fourth primary assembling piece, other joint sections of the third primary assembling piece that are located outward of both the second primary assembling piece and the fourth primary assembling piece are trimmed off to obtain a desired size of the back frame; wherein the joint sections are recesses defined at a surface of the first primary assembling piece or the third primary assembling piece, the recesses do not extend through opposite surfaces of the first primary assembling piece or the third primary assembling piece, whereby the both ends of the second primary or the both ends of the fourth primary assembling piece assembling piece are movable within the joint sections.