Display device and method for updating image frames based on image frame switching period thereof

A display device comprising:

• a panel comprising a first electrode, a second electrode, a plurality of charged particles and a medium interposed between the first electrode and the second electrode, wherein the medium is configured to contain the charged particles;
• and
• a control unit electrically coupled to the panel, the control unit configured for receiving a plurality of image data values and configured for determining whether an image frame switching period between a present image frame and a next image frame corresponding to the image data values is less than or equal to a predetermined period after receiving the image data values to decide if the display device operates in a first updating mode or in a second updating mode, wherein when the display device operates in the first updating mode, the control unit generates a first data pulse for driving the panel such that the charged particles move to a first display position to update from the present image frame to the next image frame, in which the present image frame is different from the next image frame, and when the display device operates in the second updating mode, the control unit sequentially generates a reset pulse and a second data pulse for driving the panel such that the charged particles are reset to an initial position and the charged particles then move to a second display position to update the image frame from the present image frame to the next image frame, wherein the present image frame is different from the next image frame, the image data value of the present image frame is different from the image data value of the next image frame and the image frame switching period is a time interval between a start time of the present image frame a start time of the next image frame.

A method for updating image frames displayed on a display device, comprising a plurality of charged particles for receiving and displaying a plurality of image data values, wherein the charged particles comprise a first type of particle and a second type of particle, the method comprising:

• receiving a first image data value and displaying a first image frame according to the first image data value;
• receiving a second image data value different from the first image data value for displaying a second image frame according to the second image data value;
• calculating whether a switching period between a first start time of said displaying the first image frame and a second start time of said displaying the second image frame is greater than a predetermined period;
• if said switching period is less than or equal to said predetermined period, then using a first updating mode to display the second image frame according to said second image data value, wherein said first updating mode comprises applying a pulse having a first polarity according to said second image value to the charged particles, and not applying any pulse having a second polarity opposite the first polarity to the charged particles;
• and
• if said switching period is greater than said predetermined period, then using a second updating mode to display the second image frame according to said second image data value when the switching period is greater than the predetermined period,
• wherein said second updating mode comprises applying the pulse having the first polarity according to said second image value to the charged particles, and applying at least one pulse having the second polarity opposite the first polarity to the charged particles.