Liquid crystal driver, liquid crystal driving method and liquid crystal display device
First Claim
1. A liquid crystal driver, in which a frame rate of an input image signal is multiplied by 2N (N is an integer of one or more), each frame is divided into N positive field(s) and N negative field(s) respectively, the image signal is supplied to a liquid crystal panel with a positive polarity in a positive field, and the image signal is supplied to the liquid crystal panel with a negative polarity in a negative field, comprising:
- corrected image signal generating portion for generating a corrected image signal having the same amount of correction added to the positive field and the negative field in response to a luminance of the image signal of the N positive field(s) and N negative field(s) respectively divided from the each frame and a luminance of the image signal 2N fields before the respective positive field and negative field, whereinthe corrected image signal generated by the corrected image signal generating portion is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated by the corrected image signal generating portion is supplied to the liquid crystal panel with the negative polarity in the negative field.
1 Assignment
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Accused Products
Abstract
A liquid crystal driver is provided, in which a frame rate of an input image signal is multiplied by 2N (N is an integer of one or more); each frame is divided into N positive field(s) and N negative field(s) respectively; the image signal is supplied to a liquid crystal panel with a positive polarity in a positive field; and the image signal is supplied to the liquid crystal panel with a negative polarity in a negative field. The liquid crystal driver includes a corrected image signal generator configured to generate a corrected image signal having the same amount of correction added to the positive field and negative field. The corrected image signal is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal is supplied to the liquid crystal panel with the negative polarity in the negative field.
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Citations
14 Claims
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1. A liquid crystal driver, in which a frame rate of an input image signal is multiplied by 2N (N is an integer of one or more), each frame is divided into N positive field(s) and N negative field(s) respectively, the image signal is supplied to a liquid crystal panel with a positive polarity in a positive field, and the image signal is supplied to the liquid crystal panel with a negative polarity in a negative field, comprising:
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corrected image signal generating portion for generating a corrected image signal having the same amount of correction added to the positive field and the negative field in response to a luminance of the image signal of the N positive field(s) and N negative field(s) respectively divided from the each frame and a luminance of the image signal 2N fields before the respective positive field and negative field, wherein the corrected image signal generated by the corrected image signal generating portion is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated by the corrected image signal generating portion is supplied to the liquid crystal panel with the negative polarity in the negative field. - View Dependent Claims (2)
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3. A liquid crystal driving method, in which a frame rate of an input image signal is multiplied by 2N (N is an integer of one or more), each frame is divided into N positive field(s) and N negative field(s) respectively, the image signal is supplied to a liquid crystal panel with a positive polarity in a positive field, and the image signal is supplied to the liquid crystal panel a negative polarity in a negative field, comprising the steps of:
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generating a corrected image signal having the same amount of correction added to the positive field and the negative field in response to a luminance of the image signal of the N positive field(s) and N negative field(s) respectively divided from the each frame and a luminance of the image signal 2N fields before the respective positive field and negative field, and supplying the corrected image signal generated at the generating step to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated at the generating step to the liquid crystal panel with the negative polarity in the negative field. - View Dependent Claims (4)
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5. A liquid crystal display device comprising:
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a liquid crystal panel, and a drive circuit in which a frame rate of an input image signal is multiplied by 2N (N is an integer of one or more), each frame is divided into N positive field(s) and N negative field(s) respectively, the image signal is supplied to the liquid crystal panel with a positive polarity in a positive field, and the image signal is supplied to the liquid crystal panel with a negative polarity in a negative field, wherein the drive circuit includes a corrected image signal generator configured to generate a corrected image signal having the same amount of correction added to the positive field and the negative field in response to a luminance of the image signal of the N positive field(s) and N negative field(s) respectively divided from the each frame and a luminance of the image signal 2N fields before the respective positive field and negative field, and the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the negative polarity in the negative field. - View Dependent Claims (6)
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7. A liquid crystal driver, in which a frame rate of an input image signal is multiplied by 2N (N is an integer of two or more), each frame is divided into N positive fields and N negative fields respectively, the image signal is supplied to a liquid crystal panel with a positive polarity in a positive field, and the image signal is supplied to the liquid crystal panel with a negative polarity in a negative field, comprising:
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corrected image signal generating portion for generating a corrected image signal for the positive field and the negative field in response to a luminance of the image signal of the N positive fields and N negative fields respectively divided from the each frame and a luminance of the image signal 2N fields before the respective positive field and negative field, said corrected image signal generating portion adding a predetermined amount of correction to a front field alone among the N fields out of the positive fields and negative fields. supplying first the image signal to the liquid crystal panel, and dividing and adding the predetermined amount of correction to two or more fields out of the positive fields and negative fields not supplying first the image signal to the liquid crystal panel, wherein the corrected image signal generated by the corrected image signal generating portion is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated by the corrected image signal generating portion is supplied to the liquid crystal panel with the negative polarity in the negative field. - View Dependent Claims (8)
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9. A liquid crystal driving method, in which a frame rate of an input image signal is multiplied by 2N (N is an integer of two or more), each frame is divided into N positive fields and N negative fields respectively, the image signal is supplied to a liquid crystal panel with a positive polarity in a positive field, and the image signal is supplied to the liquid crystal panel with a negative polarity in a negative field, comprising the steps of:
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generating a corrected image signal for the positive field and the negative field in response to a luminance of the image signal of the N positive fields and N negative fields respectively divided from the each frame and a luminance of the image signal 2N fields before the positive field and negative field; adding a predetermined amount of correction to a front field among the N fields out of the positive fields and negative fields supplying first the image signal to the liquid crystal panel; dividing and adding the predetermined amount of correction to two or more fields out of the positive fields and negative fields not supplying first the image signal to the liquid crystal panel; and supplying the corrected image signal generated at the preceding steps to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated at the preceding steps to the liquid crystal panel with the negative polarity in the negative field. - View Dependent Claims (10)
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11. A liquid crystal display device comprising:
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a liquid crystal panel, and a drive circuit in which a frame rate of an input image signal is multiplied by 2N (N is an integer of two or more), each frame is divided into N positive fields and N negative fields respectively, the image signal is supplied to the liquid crystal panel with the positive polarity in a positive field, and the image signal is supplied to the liquid crystal panel with the negative polarity in a negative field, wherein the drive circuit includes a corrected image signal generator configured to generate a corrected image signal for the positive field and negative field in response to a luminance of the image signal including the N positive fields and N negative fields respectively divided from the each frame and a luminance of the image signal 2N fields before the positive field and negative field, to add a predetermined amount of correction to a front field alone among the N fields out of the positive fields and negative fields supplying first the image signal to the liquid crystal panel and to divide and add the predetermined amount of correction to two or more fields out of the positive fields and negative fields not supplying first the image signal to the liquid crystal panel, and the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the negative polarity in the negative field. - View Dependent Claims (12)
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13. A driver for a liquid crystal panel, multiplying a frame rate of an input image signal by 2N (N is an integer of one or more), dividing each frame into N positive field(s) and N negative field(s) respectively, and supplying the image signal to the liquid crystal panel with a positive polarity in a positive field and with a negative polarity in a negative field, said driver comprising:
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a corrected image signal generator configured to generate a corrected image signal having the same amount of correction added to the positive field and the negative field in response to a luminance of the image signal of the N positive field(s) and N negative field(s) respectively divided from the each frame and a luminance of the image signal 2N fields before the respective positive field and negative field, wherein the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the negative polarity in the negative field.
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14. A driver for a liquid crystal panel, multiplying a frame rate of an input image signal by 2N (N is an integer of one or more), dividing each frame into N positive field(s) and N negative field(s) respectively, and supplying the image signal to the liquid crystal panel with a positive polarity in a positive field and with a negative polarity in a negative field, said driver comprising:
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a corrected image signal generator configured to generate a corrected image signal for the positive field and the negative field in response to a luminance of the image signal of the N positive fields and N negative fields respectively divided from the each frame and a luminance of the image signal 2N fields before the respective positive field and negative field, said corrected image signal generator configured to add a predetermined amount of correction to a front field alone among the N fields out of the positive fields and negative fields supplying first the image signal to the liquid crystal panel, and divide and add the predetermined amount of correction to two or more fields out of the positive fields and negative fields not supplying first the image signal to the liquid crystal panel, wherein the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the positive polarity in the positive field and the corrected image signal generated by the corrected image signal generator is supplied to the liquid crystal panel with the negative polarity in the negative field.
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Specification