Structure Of Liquid Crystal Display Device For Easy Assembly And Disassembly

Abstract

A liquid crystal display device includes a metal case having a display window, a frame member made of synthetic resin, a liquid crystal display panel disposed between the metal case and the frame member, an integrated circuit chip driving the liquid crystal display panel, and disposed between the metal case and the frame member, a first print circuit board, and a second print circuit board electrically connected to the first print circuit board, and a flexible wiring substrate connected to the liquid crystal display panel and the first print circuit board. The first print circuit board includes at least one ground pad which is connected to the metal case, and the second print circuit board includes a power supply circuit and a connector connected to an external member of the liquid crystal display device, and supplies power to the first print circuit board via a flat cable.

1 . A liquid crystal display device comprising: 
 a metal case having a display window;    a frame member made of synthetic resin;    a liquid crystal display panel disposed between the metal case and the frame member;    an integrated circuit chip driving the liquid crystal display panel, and disposed between the metal case and the frame member;    a first print circuit board, and a second print circuit board electrically connected to the first print circuit board;    a flexible wiring substrate connected to the liquid crystal display panel and the first print circuit board;    wherein the first print circuit board comprises at least one ground pad, and the at least one ground pad is connected to the metal case, and    wherein the second print circuit board comprises a power supply circuit and a connector connected to an external member of this liquid crystal display device, and supplies power to the first print circuit board via a flat cable.    
   
   
       2 . The liquid crystal display device according to  claim 1 , wherein the flexible wiring substrate is connected to a gate electrode of the liquid crystal display panel.  
   
   
       3 . The liquid crystal display device according to  claim 2 , wherein thin integrated circuit chip is bonded to the flexible wiring substrate.  
   
   
       4 . A liquid crystal display device comprising: 
 a metal case having a display window;    a frame member made of synthetic resin;    a liquid crystal display panel disposed between the metal case and the frame member;    an integrated circuit chip driving the liquid crystal display panel, and disposed between the metal case and the frame member;    first print circuit board, and a second print circuit board electrically connected to the first print circuit board;    a flexible wiring substrate connected to the liquid crystal display panel and the first print circuit board;    wherein the flexible wiring substrate is connected to a drain terminal of the liquid crystal display panel;    wherein the first print circuit board comprises at least one ground pad connected to the metal case in a space between the first print circuit board and the metal case, and    wherein the second print circuit board comprises a power supply circuit and a connector connected to an external member of the liquid crystal display device, and supply a power to the first print circuit board via a flat cable.    
   
   
       5 . The liquid crystal display device according to  claim 4 , wherein the integrated circuit chip is bonded to the flexible wiring substrate.  
   
   
       6 . A liquid crystal display device comprising: 
 a metal case having a display window;    a frame member made of synthetic resin;    a liquid crystal display panel disposed between the metal case and the frame member;    a first integrated circuit chip and a second integrated circuit chip, driving the liquid crystal display panel and disposed between the metal case and the frame member;    a first print circuit board, a second print circuit board, and a third print circuit board electrically connected to the first print circuit board and the second print circuit board;    a first flexible wiring substrate connected to the liquid crystal display panel and the first print circuit board, a second flexible wiring substrate connected to the liquid crystal display panel and the second print circuit board;    wherein the first flexible wiring substrate and the second flexible wiring substrate are connected to drain terminals of the liquid crystal display panel;    wherein the first print circuit board comprises at least one ground pad connected to the metal case in a space between the first print circuit board and the metal case, and the second print circuit board comprises at least one ground pad connected to the metal case in a space between the first print circuit board and the metal case; and    wherein the second print circuit board comprises a power supply circuit and a connector connected to an external member of the liquid crystal display device, and supplies power to the first print circuit board and the first print circuit board via flat cables.    
   
   
       7 . The liquid crystal display device according to  claim 6 , wherein the integrated circuit chip is bonded to the flexible wiring substrate.