Color correction liquid crystal display and method of driving same
First Claim
1. A liquid crystal display comprising:
- a liquid crystal display panel for displaying picture images; and
a color correction unit;
wherein upon receipt of raw RGB picture data corresponding to raw RGB gamma curves, the color correction unit generates corrected RGB picture data based on values over a predetermined imaginative gamma curve established in accordance with the characteristic of the liquid crystal display panel, stores values over corrected RGB gamma curves corresponding to the corrected picture data, and gamma-corrects the raw RGB picture data based on values over the stored corrected RGB gamma curves.
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Abstract
A liquid crystal display includes a liquid crystal display panel for displaying picture images, and a color correction unit. Upon receipt of raw RGB picture data corresponding to raw RGB gamma curves, the color correction unit generates corrected RGB picture data based on values over a predetermined imaginative gamma curve established in accordance with the characteristic of the liquid crystal display panel. The color correction unit stores values over corrected RGB gamma curves corresponding to the corrected picture data, and gamma-corrects the raw RGB picture data based on values over the stored corrected RGB gamma curves, thereby displaying the picture images.
43 Citations
32 Claims
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1. A liquid crystal display comprising:
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a liquid crystal display panel for displaying picture images; and
a color correction unit;
wherein upon receipt of raw RGB picture data corresponding to raw RGB gamma curves, the color correction unit generates corrected RGB picture data based on values over a predetermined imaginative gamma curve established in accordance with the characteristic of the liquid crystal display panel, stores values over corrected RGB gamma curves corresponding to the corrected picture data, and gamma-corrects the raw RGB picture data based on values over the stored corrected RGB gamma curves. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9)
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7. A liquid crystal display comprising:
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a vertically aligned mode liquid crystal display panel for displaying picture images; and
a color correction unit;
wherein upon receipt of raw RGB picture data corresponding to raw RGB gamma curves, the color correction unit transforms the raw RGB picture data into corrected RGB picture data based on values over a predetermined imaginative gamma curve established in accordance with the characteristic of the vertically aligned mode liquid crystal display panel, stores values over corrected RGB gamma curves corresponding to the transformed corrected picture data, and gamma-corrects the raw RGB picture data based on values over the stored corrected RGB gamma curves. - View Dependent Claims (10)
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11. A liquid crystal display comprising:
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a liquid crystal display panel having an internal layer of liquid crystal with a predetermined property, a plurality of gate lines transmitting scanning signals, a plurality of data lines transmitting picture signals, and switching circuits connected to the gate and the data lines;
a scan driver sequentially applying gate on voltages for turning-on the switching circuits to the gate lines;
a data driver applying data voltages for representing picture signals to the data lines; and
a control unit, at initial driving, generating corrected picture data corresponding to raw RGB picture data fed from the outside while storing the corrected picture data into a predetermined memory, and after the initial driving, upon receipt of raw RGB picture data from the outside, extracting corrected picture data corresponding to the raw RGB picture data from the memory while transmitting the extracted picture data to the data driver, and generating timing signals for controlling the operation of the scan driver and the data driver while outputting the generated timing signals to the scan driver and the data driver, respectively. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 29, 30, 31, 32)
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25. A driving unit for a liquid crystal display, the liquid crystal display having a layer of liquid crystal with a predetermined property, a plurality of gate lines, a plurality of data lines crossing over the gate lines while being insulated from the gate lines, and pixels surrounded by the gate and data lines each with a switching circuit connected to the corresponding gate and the data lines, the pixels being arranged in a matrix form, the driving unit for the liquid crystal display comprising:
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a scan driver sequentially applying gate on voltages for turning-on the switching circuits to the plurality of gate lines;
a data driver applying data voltages for representing picture signals to the data lines; and
a control unit, at initial driving, generating corrected picture data corresponding to raw RGB picture data fed from the outside while storing the corrected picture data into a predetermined memory, and after the initial driving, upon receipt of raw RGB picture data from the outside, extracting corrected picture data corresponding to the raw RGB picture data from the memory while transmitting the extracted picture data to the data driver, and generating timing signals for controlling the operation of the scan driver and the data driver while outputting the generated timing signals to the scan driver and the data driver, respectively.
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28. A method of driving a liquid crystal display, the liquid crystal display having a layer of liquid crystal with a predetermined property, a plurality of gate lines, a plurality of data lines crossing over the gate lines while being insulated from the gate lines, and pixels surrounded by the gate and data lines each with a switching circuit connected to the corresponding gate and data lines, the pixels being arranged in a matrix form, the method comprising the steps of:
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(a) sequentially transmitting scanning signals to the gate lines;
(b) upon receipt of RGB gray scale data for displaying picture images from the outside, establishing RGB gammas based on the RGB gray scale data, and generating data voltages based on the established RGB gammas; and
(c) feeding the data voltages generated at the (b) step to the data lines.
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Specification