| 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 |
| 20090213452 | COLOR DISPLAY DEVICES - The present invention is directed to color display devices. The color display devices comprise display cells which is capable of displaying multiple color states. The display device may also comprise black matrix layers or a brightness enhancement structure on the viewing side. The present invention is directed to a display device comprising a plurality of display cells, wherein each of said display cells is sandwiched between a first layer comprising a common electrode and a second layer comprising a plurality of driving electrodes and at least one of the driving electrodes is a designated electrode, and said display device further comprises blocking layers on its viewing side and said blocking layers are located in positions corresponding to the designated electrodes. | 08-27-2009 |
| 20090231245 | LUMINANCE ENHANCEMENT STRUCTURE FOR REFLECTIVE DISPLAY DEVICES - The present invention is directed to luminance enhancement structure for reflective display devices. The luminance enhancement structure comprises grooves and columns, wherein said grooves have a triangular cross-section and a top angle, and said grooves and columns are in alternating order and in a continuous form in one direction. The luminance enhancement structure not only can reduce the total internal reflection, but also especially can enhance the on-axis brightness of a display device. | 09-17-2009 |
| 20090251763 | COLOR DISPLAY DEVICES - The present invention is directed to color display devices which are capable of displaying multiple color states. The display device comprises a plurality of display cells, wherein each of said display cells is (a) sandwiched between a first layer comprising a common electrode and a second layer comprising a plurality of driving electrodes, wherein at least one of the driving electrodes is a designated electrode, (b) filled with an electrophoretic fluid comprising at least two types of pigment particles dispersed in a solvent or solvent mixture, and (c) capable of displaying at least four color states. The display device may also comprise hiding layers or a brightness enhancement structure on the viewing side. | 10-08-2009 |
| 20090273827 | COLOR DISPLAY DEVICES - The present invention is directed to color display devices in which each display cell is capable of displaying three color states. The display fluid filled in the display cells comprises two types of pigment particles. The color display device may further comprise a brightness enhancement structure on its viewing side. | 11-05-2009 |
| 20100027073 | GAMMA ADJUSTMENT WITH ERROR DIFFUSION FOR ELECTROPHORETIC DISPLAYS - Embodiments are directed to image processing methods to improve display quality while using a limited number of pulses and to correct the error between the reflectance and the desired gamma. The complexity of the hardware used for driving a display device may then be reduced to minimum. In addition, in various embodiments the method can also be used to compensate for the change of an optical response curve due to batch variation, temperature change, photo-exposure or aging of the display device. | 02-04-2010 |
| 20100053728 | COLOR DISPLAY DEVICES - The color display of the present invention involves a two particle system and is capable of displaying multiple colors with high quality black and white states. The color states are suitable for highlighting function. The color display does not require alignment between the electrodes and the display cells in which a display fluid is filled, which significantly reduces the complexity of the design and also lowers the manufacturing costs. | 03-04-2010 |
| 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 |
| 20100141573 | LUMINANCE ENHANCEMENT STRUCTURE WITH MOIRE REDUCING DESIGN - The present invention is directed to luminance enhancement structure for reflective display devices. The structure not only can enhance the brightness of a display device, but also can reduce the Moiré effect of the display device. The present invention is also directed to a display device comprising an array of microcups and a luminance enhancement structure. | 06-10-2010 |
| 20100177396 | ASYMMETRICAL LUMINANCE ENHANCEMENT STRUCTURE FOR REFLECTIVE DISPLAY DEVICES - The present invention is directed to a luminance enhancement structure comprising grooves and columns, wherein the grooves have a triangular cross-section and a top angle, and the triangular cross-section having two sides which are not equal. The luminance enhancement structure is useful for reflective display devices. The structure can reduce total internal reflection, thus enhancing the brightness of a display device. | 07-15-2010 |
| 20100182351 | LUMINANCE ENHANCEMENT STRUCTURE WITH VARYING PITCHES - The present invention is directed to luminance enhancement structure for reflective display devices. The luminance enhancement structure comprises columns and grooves, wherein said grooves have a triangular cross-section and the pitches of the structure vary. The structure not only can enhance the brightness of a display device, but also can reduce the Moiré effect of the display device. | 07-22-2010 |
| 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 |
| 20100225999 | LUMINANCE ENHANCEMENT STRUCTURE FOR REFLECTIVE DISPLAY DEVICES - The present invention is directed to luminance enhancement structures for reflective display devices. The structure comprises columns and grooves, wherein each of said grooves has a cross-section comprising an apex angle and two edge lines. The structure increases the overall reflectance by reducing the total internal reflection, and as a result, the brightness of a display device is increased. | 09-09-2010 |
| 20100271407 | REFLECTIVE DISPLAY DEVICES WITH LUMINANCE ENHANCEMENT FILM - The present invention is directed to reflective display devices with a luminance enhancement structure on its viewing side and at least an auxiliary layer and/or edge sealing. The structure increases the overall reflectance by reducing the total internal reflection, and as a result, the brightness of a display device is increased. | 10-28-2010 |
| 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 |
| 20110057927 | LUMINANCE ENHANCEMENT STRUCTURE FOR REFLECTIVE DISPLAY DEVICES - The present invention is directed to luminance enhancement structure for reflective display devices. The luminance enhancement structure comprises grooves and columns, wherein said grooves have a triangular cross-section and a top angle, and said grooves and columns are in alternating order and in a continuous form in one direction. The luminance enhancement structure not only can reduce the total internal reflection, but also especially can enhance the on-axis brightness of a display device. | 03-10-2011 |
| 20110063314 | DISPLAY CONTROLLER SYSTEM - A display controller system with a memory controller and buffers is described. The system enables transferring data from the main memory of the CPU to the image memory without interfering the image updating. As a result, the present invention may allow continuously updating the display image and continuously writing new image data from CPU to the image memory which improves overall system performance. | 03-17-2011 |
| 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 |
| 20110128266 | MULTIPLEX ELECTROPHORETIC DISPLAY DRIVER CIRCUIT - A multiplex electrophoretic display driver circuit comprises a memory unit, a display controller and a voltage driving unit. The memory unit has two registers respectively storing the current and former gray-level matrix signals. The gray-level matrix signal contains gray-level data corresponding to electrophoretic pixels. The display controller has an encoding circuit and a counting circuit. The encoding circuit generates a difference-value matrix signal containing difference values according to a difference between the current and former gray-level matrix signals and then generates a voltage-difference matrix signal containing voltage-difference signals corresponding to the electrophoretic pixels. The counting circuit receives the difference-value matrix signal and counts to generate refreshing values corresponding to the difference values. The encoding circuit adds the refreshing values to a next-cycled difference-value matrix signal to generate a new voltage-difference matrix signal. The voltage driving unit drives the electrophoretic pixels according to the voltage-difference matrix signal. | 06-02-2011 |
