Patent application number | Description | Published |
20090096745 | APPROACH TO ADJUST DRIVING WAVEFORMS FOR A DISPLAY DEVICE - The present invention is directed to methods for adjusting or selecting driving waveforms in order to achieve a consistent optical performance of a display device. When a method of the present invention is applied, even if there are changes in the display medium due to temperature variation, photo-exposure or aging, the optical performance can be maintained at a desired level. | 04-16-2009 |
20100134538 | DRIVING METHODS FOR ELECTROPHORETIC DISPLAYS - This application is directed to driving methods for electrophoretic displays. The driving methods comprise grey level waveforms which greatly enhance the pictorial quality of images displayed. The driving method comprises: (a) applying waveform to drive each pixel from its initial color state to the full first color then to a color state of a desired level; or (b) applying waveform to drive each pixel from its initial color state to the full second color then to a color state of a desired level. | 06-03-2010 |
20100194733 | MULTIPLE VOLTAGE LEVEL DRIVING FOR ELECTROPHORETIC DISPLAYS - This application is directed to driving methods for electrophoretic displays. The driving methods comprise applying different voltages selected from multiple voltage levels, to pixel electrodes and optionally also to the common electrodes. In a preferred method, the different voltages are selected from a group consisting of 0V, at least two levels of positive voltage and at least two levels of negative voltage. | 08-05-2010 |
20100194789 | PARTIAL IMAGE UPDATE FOR ELECTROPHORETIC DISPLAYS - The present invention is directed to methods for partial image updates. Such methods provide the display controller the ability to update selected areas of an image that require updating and leave other areas unchanged. The methods also allow for multiple waveforms to be used for specific regions, giving the display the capability of updating each region with its own waveform. | 08-05-2010 |
20100271408 | PARTIAL UPDATE DRIVING METHODS FOR ELECTROPHORETIC DISPLAYS - This application is directed to driving methods for electrophoretic displays. More specifically, the methods are suitable where there is a requirement for a partial update of the images in the display, where a partial update means that less than 10% of the pixels require updating. An essential element of the method is a floating common electrode. This method for partial updating may be used with the prior art driving techniques in order to provide the optimum updating method for different applications. | 10-28-2010 |
20100283804 | Driving Methods And Waveforms For Electrophoretic Displays - This application is directed to driving methods for electrophoretic displays. The driving methods and waveforms have the advantage that they provide a clean and smooth transition from one image to another image, without flashing or other undesired visual interruptions. The methods also provide faster image transitions. In an embodiment, a method drives a display device from a first image to a second image wherein images of a first color are displayed with a background of a second color, which method comprises driving pixels of the first color directly to the second color before driving pixels of the second color directly to the first color. | 11-11-2010 |
20100295880 | DRIVING METHODS FOR ELECTROPHORETIC DISPLAYS - This application is directed to driving methods for electrophoretic displays. The driving methods comprise grey level waveforms which greatly enhance the pictorial quality of images displayed. The driving method comprises: (a) applying waveform to drive each pixel to the full first color then to a color state of a desired level; or (b) applying waveform to drive each pixel to the full second color then to a color state of a desired level. | 11-25-2010 |
20110096104 | SPATIALLY COMBINED WAVEFORMS FOR ELECTROPHORETIC DISPLAYS - The present invention is directed to a driving method for compensating the response speed change of an electrophoretic display due to temperature variation, photo-degradation or aging of the display device, without a complex structure (e.g., use of sensors). This is accomplished by combining two waveforms, one of which causes the grey level to become dimmer and the other waveform causes the grey level to become brighter, as the response speed degrades. | 04-28-2011 |
20130300727 | MULTIPLE VOLTAGE LEVEL DRIVING FOR ELECTROPHORETIC DISPLAYS - This application is directed to driving methods for electrophoretic displays. The driving methods comprise applying different voltages selected from multiple voltage levels, to pixel electrodes and optionally also to the common electrodes. In one embodiment, the different voltages are selected from a group consisting of | 11-14-2013 |