Abstract: A display system comprises a display panel having a plurality of subpixels, a first look-up table (LUT) configured to provide gamma adjustment signals to input image data, an image processor configured to receive the gamma adjusted input image data for processing, a demultiplexer configured to receive and demultiplex the processed image data from the image processor, and second and third LUTs configured to receive the demultiplexed image data from the demultiplexer. The second and third LUTs correct fixed noise patterns in the demultiplxed image data. The system further comprises a multiplexer configured to receive and multiplex image data from the second and third LUTs, a driver configured to receive the multiplexed image data from the multiplexer and provide driving image data, and fourth and fifth LUTs receive the driving image data from the driver. The fourth and fifth LUTs adjust the driving image data for display on the panel.

Abstract: Sub-pixel rendering with gamma adjustment allows the luminance for the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel, while the chrominance can match the linear response of the human eye's chrominance channels. The gamma correction allows the sub-pixel rendering to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques with gamma adjustment may be optimized for the gamma transfer curve of a display device in order to improve response time, dot inversion balance, and contrast.

Abstract: A transflective display panel substantially comprises a plurality of a sub-pixel grouping substantially comprising a plurality of at least first and second color sub-pixels. The plurality of the sub-pixel grouping forms an array across said display panel in a plurality of rows and columns. The first color sub-pixel is a substantially dark color sub-pixel disposed in the plurality of the sub-pixel grouping across said display panel so as to form a substantially vertical line down said display. Each sub-pixel further comprises an optical via, and the optical vias are formed in non-uniform positions upon said dark color sub-pixels.

Abstract: The present application discloses several methods, techniques and systems for rendering source image data onto high brightness subpixel arrangements—for example, RGBW display panels. Additionally, these techniques have application for rendering data onto 3-color displays as well.

Abstract: System and methods are disclosed for improving the off-normal axis viewing angle by applying different filters if one colored sub-pixel data is driven close to 100% luminance while other colored sub-pixel data is driven close to 50% luminance values. Systems and methods for adjusting the viewing characteristics of the display system are also disclosed.

Abstract: A method of determining implied sample areas for each data point of each color in a source pixel data specified in a first sub-pixel format is used for sub-pixel rendering an image on a display specified in a second sub-pixel format. Each of the first and second sub-pixel formats comprises a plurality of colored sub-pixels. The method comprises determining a geometric center of each colored sub-pixel of the first format to define a sampling point; and defining each implied sample area by forming lines that are substantially equidistant between the sampling point of one colored sub-pixel and the sampling point of another neighboring same color colored sub-pixel. A similar technique may be used for determining resample areas for computing color values for rendering an image specified in a first sub-pixel format on a display substantially comprising a plurality of colored sub-pixels arranged in a second sub-pixel format.

Abstract: Dot inversion schemes are disclosed on novel display panel layouts with extra drivers. A display panel comprises substantially a plurality of a subpixel repeating group comprising an even number of subpixels in a gate direction, wherein at least one set of adjacent column of same colored subpixels share image data from a single driver upon the display panel.

Abstract: An image display system is disclosed comprising an output unit and a means for displaying a plurality of color frames on the output unit. Each color frame is subpixelated and displayed over time. One of the color planes is a color plane of a low luminance color, and the low luminance color plane is displayed with greater frequency over time than other displayed color frames.

Abstract: Methods and systems for motion adaptive filtering detect movement of text or areas of high spatial frequency in one frame to another frame of an image. When such movement is detected and meets a certain level or threshold, the subpixel rendering processing of such text or areas of high spatial frequency may be changed.

Abstract: The gamma adjustment allows the luminance for the sub-pixel arrangement to match the non-linear gamma response of the human eye's luminance channel, while the chrominance can match the linear response of the human eye's chrominance channels. The gamma correction allows the algorithms to operate independently of the actual gamma of a display device. The sub-pixel rendering techniques disclosed with gamma adjustment can be optimized for a display device gamma to improve response time, dot inversion balance, and contrast because gamma correction and compensation of the sub-pixel rendering algorithm provides the desired gamma through sub-pixel rendering. These techniques can adhere to any specified gamma transfer curve.

Abstract: A method of operating spatial sampling filters comprises detecting subpixel rendered areas, turning on a first set of spatial sampling filters for the subpixel rendered areas in response to detecting said subpixel rendered areas, detecting non-subpixel rendered areas; and turning on a second set of spatial sampling filters for the non-subpixel rendered areas in response to detecting the non-subpixel rendered areas.

Abstract: A method of determining implied sample areas for each data point of each color in a source pixel data specified in a first sub-pixel format is used for sub-pixel rendering an image on a display specified in a second sub-pixel format. Each of the first and second sub-pixel formats comprises a plurality of colored sub-pixels. The method comprises determining a geometric center of each colored sub-pixel of the first format to define a sampling point; and defining each implied sample area by forming lines that are substantially equidistant between the sampling point of one colored sub-pixel and the sampling point of another neighboring same color colored sub-pixel. A similar technique may be used for determining resample areas for computing color values for rendering an image specified in a first sub-pixel format on a display substantially comprising a plurality of colored sub-pixels arranged in a second sub-pixel format.

Abstract: A system and method are disclosed for performing dot inversion with standard drivers and backplane on novel display panel layouts. Suitable dot inversion schemes are implemented on a liquid crystal display having a panel and a driver circuit. The panel substantially comprises a subpixel repeating group, the group having a even number of subpixels across a first direction. The driver circuit comprises a set of drivers, coupled to the panel providing image data signals to the panel, the signals effecting substantially a dot inversion scheme to the panel. The drivers are also substantially connected to the columns of the panel in a sequence along the driver circuit wherein at least one driver is not connected to a column of the panel, and at least two subpixel regions of the panel having same colored subpixels in the two regions with substantially different polarities.

Abstract: A system and method are disclosed for compensating for visual effects upon panels having non-standard polarity inversion schemes. A display comprises a panel comprising a plurality of subpixels. The panel has at least two subsets of same-colored subpixels having different electro-optical properties. The display also comprises separate quantizers for each of the at least two subsets of same-colored subpixels that can correct for fixed pattern noise.

Abstract: A method of producing a plurality of filter kernels comprised of filter coefficients for use in a sub-pixel rendering operation comprises calculating a plurality of filter coefficients for each filter kernel by dividing a spatial area of an input image that is overlapped by a portion of a spatial rendering area by a total area of the spatial rendering area using floating point arithmetic. The method further comprises multiplying each filter coefficient by a divisor to produce a filter product such that a sum of all filter products produces a filter sum that equals the divisor. Then a binary search operation is performed to find a round off point for the filter sum such that when each filter coefficient is converted to an integer, a sum of the filter coefficients equals the divisor. The filter coefficients are then converted to integers using the round off point.

Abstract: A display device comprises a display panel comprising high brightness subpixel repeating groups—for example, RGBW display panels. The device further comprises a subpixel rendering unit configured to render source image data onto the panel. The subpixel rendering techniques may render three-color source image data onto the panel comprising the high brightness subpixel repeating groups, and may also be used for rendering data onto 3-color displays as well.

Abstract: Various embodiments of a sub-pixel repeating group are disclosed. In one embodiment, an octal subpixel repeating group may comprise three-color (red, green and blue) sub-pixels with blue colored subpixel comprising twice the number of positions within the octal sub-pixel grouping as the red and green colored sub-pixels. In another embodiment, a subpixel repeating group comprises two rows of eight “split” subpixels comprising three primary colors and a non-saturated neutral, or white, subpixel functioning as a primary color.

Abstract: Novel three-color and four-color subpixel arrangements and architectures for display and the like are herein disclosed. Novel techniques for subpixel rendering on the above subpixel arrangements are also herein disclosed.

Abstract: Methods are disclosed to render image data over time. In one embodiment, a mapping from image data values to first and second sets of subpixels in a plurality of output frames uses brightness versus viewing angle performance measures to reduce color error when the image is viewed on the display panel at an off-normal viewing angle. In another embodiment, temporal subpixel rendering is used to improve the viewing angle in LCD displays or to improve subpixel rendering in other display technologies.

Abstract: Novel three-color and four-color subpixel arrangements and architectures for display and the like are herein disclosed. Novel techniques for subpixel rendering on the above subpixel arrangements are also herein disclosed.