Impulse driving method and apparatus for LCD
View Patent ↗There is provided an impulse driven LCD which comprises: an LCD drive controller for outputting normal data, adjust data for impulse generation, and a first control signal for controlling the output of the normal or adjust data, and for outputting a second control signal for controlling display of an image signal according to the normal or adjust data; the LCD drive controller includes a scan driver for sequentially outputting first and second scan signals for a 1 H period according to application of the second control signal; and an LCD panel for charging the normal data signal to a storage capacitor according to application of the first scan signal, and for charging the adjust data signal to the storage capacitor according to application of the second scan signal.
1. A liquid crystal display (LCD) comprising:
an LCD drive controller for outputting normal data, adjust data and control signals for controlling display of an image by the LCD according to the normal and adjust data, the control signals including a first scan signal and a second scan signal; and
a liquid crystal display panel including a storage capacitor to be charged by the normal data according to application of the first scan signal, and to be charged by the adjust data according to application of the second scan signal,
wherein the normal data represents image data received by the LCD drive controller and the adjust data represents offset data to offset the charge to the storage capacitor by the normal data,
wherein the LCD drive controller sequentially supplies the first scan signal to each of n gate lines aligned on the liquid crystal display panel for a 1 H period, and sequentially supplies the second scan signal to the first gate line when the first scan signal is applied to the n/k (k is an integer of two or more) gate lines for switch-on.
2. A liquid crystal display (LCD) comprising:
an LCD drive controller for outputting normal data, adjust data and control signals for controlling display of an image by the LCD according to the normal and adjust data, the control signals including a first scan signal and a second scan signal; and
a liquid crystal display panel including a storage capacitor to be charged by the normal data according to application of the first scan signal, and to be charged by the adjust data according to application of the second scan signal,
wherein the normal data represents image data received by the LCD drive controller and the adjust data represents offset data to offset the charge to the storage capacitor by the normal data,
wherein the LCD drive controller sequentially supplies the first scan signal to each of n gate lines aligned on the liquid crystal display panel for a 1 H period, and sequentially supplies the second scan signal to the first gate line when the first scan signal is applied to the n/k (k is an integer of two or more) gate lines for switch-on,
wherein the total charge time of the normal data plus the adjust data is a 1 H period.
3. An apparatus for driving an impulse driven liquid crystal display including a plurality of gate lines for transmitting a scan signal, a plurality of data lines for transmitting an image signal, a switch connected to the gate lines and the data lines, and a storage capacitor connected to the switch, comprising:
a timing controller for outputting a normal data representation of image data for normal image driving, adjust data for impulse generation, and a first control signal for controlling the output of the normal or adjust data for a 1 H period, and for outputting a second control signal for a 1 H period for controlling display of an image signal according to the normal or adjust data;
a data driver for converting the normal data or the adjust data according to application of the first control signal and for outputting the normal data signal or adjust data signal to the data lines; and
a scan driver for sequentially outputting a first scan signal and a second scan signal to the gate lines for a 1 H period according to application of the second control signal,
wherein the second control signal comprises a gate clock signal for controlling generation of a gate-on signal, a start vertical signal for controlling starting of the gate-on signal, and an output enable signal for controlling charge of the normal or adjust data,
wherein the output enable signal controls to sequentially supply the first scan signal to n (n is positive integer) gate lines aligned on the liquid crystal display panel for a 1 H period, and sequentially supply the second scan signal to the first gate line when the first scan signal is applied to n/k (k is integer of more than 2) gate lines for switch-on.
4. An apparatus for driving an impulse driven liquid crystal display including a plurality of gate lines for transmitting a scan signal, a plurality of data lines for transmitting an image signal, a switch connected to the gate lines and the data lines, and a storage capacitor connected to the switch, comprising:
a timing controller for outputting a normal data representation of image data for normal image driving, adjust data for impulse generation, and a first control signal for controlling the output of the normal or adjust data for a 1 H period, and for outputting a second control signal for a 1 H period for controlling display of an image signal according to the normal or adjust data;
a data driver for converting the normal data or the adjust data according to application of the first control signal and for outputting the normal data signal or adjust data signal to the data lines; and
a scan driver for sequentially outputting a first scan signal and a second scan signal to the gate lines for a 1 H period according to application of the second control signal,
wherein the second scan signal includes at least one gate-on signal for a 1 H period.