Display panel driving method, display apparatus, display panel driving apparatus and electronic apparatus
View Patent ↗In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, the driving method including a step of variably controlling, where the one-field period has N light emitting periods disposed therein, N being equal to or greater than 2, the light emitting period length of a particular one of the light emitting periods and the other light emitting period or periods to provide a difference in luminance between the particular light emitting period and the other light emitting period or periods so that the particular light emitting period is visually observed as the center of light emission.
1. A display panel driving method for controlling a total light emission period length for which a pixel emits light within a one-field period, the method comprising:
placing N (N satisfying N≧2) light emission periods within a one-field period for a pixel; and
narrowing or expanding, in a state in which a period length from a starting timing of the first light emission period to an ending timing of the Nth light emission period is equal to or longer than 25% but equal to or shorter than 75% of a one-field period length and the starting timing of the first light emission period and the ending timing of the Nth light emission period are fixed, a no-light emission period between a light emission period and a different light emission period from the opposite directions or in the opposite directions to control the ending timing of the light emission period and the starting timing of the different light emission period so that the light emission period length of a particular light emission period is longer than light emission period lengths of the other light emission periods.
2. The display panel driving method according to claim 1 , wherein the ratio between the light emission period length of the particular light emission period and the light emission period lengths of the other light emission periods is equal to or higher than 1.5.
3. The display panel driving method according to claim 2 , wherein a majority of the total light emission period length is allocated to the light emission period length of the particular light emission period.
4. A display apparatus, comprising:
a display panel driving unit which controls a total light emission period length for which a pixel emits light within a one-field period by placing N (N satisfying N≧2) light emission periods within a one-field period for a pixel, and narrowing or expanding, in a state in which a period length from a starting timing of the first light emission period to an ending timing of the Nth light emission period is equal to or longer than 25% but equal to or shorter than 75% of a one-field period length and the starting timing of the first light emission period and the ending timing of the Nth light emission period are fixed, a no-light emission period between a light emission period and a different light emission period from the opposite directions or in the opposite directions to control the ending timing of the light emission period and the starting timing of the different light emission period so that the light emission period length of a particular light emission period is longer than light emission period lengths of the other light emission periods; and
a display panel having a pixel structure compatible with an active matrix driving method.
5. A display panel driving apparatus, comprising
a display panel driving unit which controls a total light emission period length for which a pixel emits light within a one-field period by placing N (N satisfying N≧2) light emission periods within a one-field period for a pixel, and narrowing or expanding, in a state in which a period length from a starting timing of the first light emission period to an ending timing of the Nth light emission period is equal to or longer than 25% but equal to or shorter than 75% of a one-field period length and the starting timing of the first light emission period and the ending timing of the Nth light emission period are fixed, a no-light emission period between a light emission period and a different light emission period from the opposite directions or in the opposite directions to control the ending timing of the light emission period and the starting timing of the different light emission period so that the light emission period length of a particular light emission period is longer than light emission period lengths of the other light emission periods.
6. An electronic apparatus, comprising:
a display panel driving unit which controls a total light emission period length for which a pixel emits light within a one-field period by placing N (N satisfying N≧2) light emission periods within a one-field period for a pixel, and narrowing or expanding, in a state in which a period length from a starting timing of the first light emission period to an ending timing of the Nth light emission period is equal to or longer than 25% but equal to or shorter than 75% of a one-field period length and the starting timing of the first light emission period and the ending timing of the Nth light emission period are fixed, a no-light emission period between a light emission period and a different light emission period from the opposite directions or in the opposite directions to control the ending timing of the light emission period and the starting timing of the different light emission period so that the light emission period length of a particular light emission period is longer than light emission period lengths of the other light emission periods;
a display panel having a pixel structure compatible with an active matrix driving method;
a system controlling unit; and
an operation inputting unit for the system controlling unit.