Liquid crystal display apparatus and method for lighting backlight thereof
DC CAFC
First Claim
Patent Images
1. A liquid crystal display apparatus, comprising:
- a first backlight; and
a second backlight which is driven simultaneously with said first backlight, said second backlight having an oscillation wave whose phase is inverted with respect to an oscillation wave of the first backlight.
4 Assignments
Litigations
1 Petition
Accused Products
Abstract
In the liquid crystal display, a first backlight and a second backlight are provided and lightened simultaneously. Among all the lamps constituting the backlight, those lamps outputting oscillation waves in one phase are made equal or nearly equal in number to those lamps outputting oscillation waves in the phase opposite to the phase mentioned above.
47 Citations
16 Claims
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1. A liquid crystal display apparatus, comprising:
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a first backlight; and
a second backlight which is driven simultaneously with said first backlight, said second backlight having an oscillation wave whose phase is inverted with respect to an oscillation wave of the first backlight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A liquid crystal display apparatus, comprising:
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a first backlight; and
a second backlight which is driven simultaneously with said first backlight, said second backlight having an oscillation wave whose phase is in the same period and in synchronization with respect to an oscillation wave of the first backlight, the second backlight being arranged 180 degrees inverted with respect to the first backlight. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for lighting a backlight of a liquid crystal display apparatus, the method comprising the steps of:
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lighting a first backlight; and
lighting a second backlight simultaneously with said first backlight by inverting phase of an oscillation wave with respect to an oscillation wave of the first backlight.
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Specification
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- Resources
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Litigation Data
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Current AssigneeGold Charm Limited (Hon Hai Precision Industry Co., Ltd.)
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Original AssigneeNEC Corporation
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InventorsTakemoto, Takahiro
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Primary Examiner(s)Hjerpe, Richard
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Assistant Examiner(s)Tran, Henry N.
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Application NumberUS09/591,580Time in Patent Office760 DaysField of Search345/102, 345/60, 345/61, 345/63, 345/66, 345/204, 345/211-213, 313/493, 313/571, 313/577, 313/477.R, 315/56, 315/86, 315/160, 315/167, 315/168, 315/169.3, 315/169.4, 315/158, 315/493, 315/634, 348/798, 348/790, 348/792, 348/793, 348/795, 348/797, 348/800US Class Current345/102CPC Class CodesG02F 1/133604 with lampsH05B 41/2821 by means of a single-switch...H05B 41/3927 by pulse width modulation H...
