Liquid crystal display and driving method thereof
AssigneeHannstar Display Corp.
InventorCHIEN-YUNG CHENG
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Abstract
The embodiments of the present invention disclose a Liquid Crystal Display (LCD) having a low power consumption. Under normal operation of the LCD, a plurality of data voltages are inputted to a display panel having a constant frame rate, and an idle detecting step is performed to determine whether to change the frame rate. When a percentage of the plurality of data voltages is not varied for a specific period of time, the frame rate is reduced.
Claims22
A driving method for a Liquid Crystal Display (LCD), the LCD comprising a processor and a display panel with said processor controlling said display panel, the method comprising:
- executing a normal operation characterized by said processor outputting a plurality of control signals to a data driver, said data driver outputting a plurality of data voltages to said display panel via a plurality of data lines, and said LCD displaying at a constant initial frame rate;
- executing one or more of (a) an idle detecting step to determine whether an idle event is met and (b) a first manipulation detecting step to determine whether a manipulation event is met;
- and
- decreasing the initial frame rate to a first frame rate, when a reference percentage or more of the plurality of data voltages are unchanged after a period of time or upon occurrence of a manipulation event that selects a specific display mode.
A Liquid Crystal Display (LCD), comprising:
- a display panel;
- a timing controller constructed to output a plurality of control signals;
- and
- a data driver constructed and coupled to receive said plurality of control signals and to output a plurality of data voltages to said display panel via a plurality of data lines, said LCD being configured to display at a constant initial frame rate under a normal operation;
- wherein the timing controller is configured to execute an idle detecting step to determine whether an idle event is met or to execute a first manipulation detecting step to determine whether a manipulation event is met, whereby the initial frame rate is decreased to a first frame when a reference percentage or more of the plurality of data voltages are unchanged after a period of time or when a manipulation event occurs resulting in selecting of a specific display mode.
Dependencies are inferred from the claim text.