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Liquid crystal display
| Details |
Inventors: Nishiyama, Seiichi; Takaku, Shigetake; Takeda, Yoshiharu; Mikoshiba, Shigeo; Shiga, Tomokazu; Hashimoto, Koji;
Assignee: Hitachi, Ltd. (Tokyo, JP) Hitachi Electronic Devices Co., Ltd. (Mobara, JP)
Primary Examiner: Sember; Thomas M.
Assistant Examiner:
Attorney, Agent or Firm: Antonelli, Terry, Stout & Kraus, LLP.
A liquid crystal display having a liquid crystal display panel for modulating light to form an image and a back light unit having a plurality of lamp tubes without inside electrodes and which are discharged by outside electrodes disposed along an outer surface of the at least one lamp tube, the back light unit being disposed behind the liquid crystal display panel. One outside electrode disposed at the at least one of the plurality of lamp tubes is electrically connected with another outside electrode disposed at an another adjacent lamp tube. |
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DETAILED DESCRIPTION The present invention was accomplished in recognition of the above problems, and, accordingly, it is an object of the present invention to provide a liquid crystal display panel in which the liquid crystal display unit's life span can be increased without the need to replace the lamp tube or the back light unit.
The above objects are achieved by a liquid crystal display device comprising a liquid crystal display panel for modulating light to form an image, and a back light unit having a lamp tube which is discharged by an electrode and is disposed behind said liquid crystal display panel, wherein said electrode is formed outside of said lamp tube.
Further, the above objects are achieved by a liquid crystal display device comprising a liquid crystal display panel having a pair of substrates, a liquid crystal layer interposed between said pair of substrates, and a back light unit having a lamp tube which is discharged by a pair of electrodes and is disposed behind said liquid crystal display panel, wherein said pair of electrodes are formed outside of said lamp tube and are disposed opposite to each other.
Further, the above objects are achieved by a liquid crystal display device comprising a liquid crystal display panel having a pair of substrates, a liquid crystal layer interposed between said pair of substrates, and a back light unit including a plurality of lamp tubes which are discharged by a pair of electrodes comprising a power supply electrode and a ground electrode which are disposed at a location opposite to a display area of said liquid crystal display panel, wherein said pair of electrodes are formed outside of said lamp tube and are formed opposite to each other.
Further, the above objects are achieved by a liquid crystal display device comprising, a liquid crystal display panel for modulating light to form an image, a back light unit including a plurality of lamp tubes which are discharged by a plurality of electrodes, wherein said electrodes are formed on said lamp tubes, and one of the electrodes is formed between a pair of electrodes
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