Patent application number | Description | Published |
20100014032 | TRANSFLECTIVE DISPLAY - A multi-mode Liquid Crystal Display (LCD) capable of functioning in a multi-mode, a monochrome reflective mode and a color transmissive mode. One embodiment provides an LCD with color filters only over most or all of the transmissive part of a pixel but only part of the reflective portion of a pixel, enabling readability in the ambient light. Embodiments eliminate the black matrix mask used typically in color filter creation. Additionally, an embodiment provides diagonal pixels to improve the resolution of the LCD in the color transmissive mode. Further, an embodiment enables the light to switch between two colors, while a third color (typically green) is always on, thereby decreasing the required frame rate of the LCD, when used in the hybrid field sequential approach. Yet another embodiment creates colors from the backlight, eliminating the need for color filters. Another embodiment involves use of color filters over only the green pixels, eliminating the need for using additional masks for making the color filter array. | 01-21-2010 |
20100020054 | TRIPLE MODE LIQUID CRYSTAL DISPLAY - In an embodiment, a system comprises an LCD comprising a plurality of pixels each comprising a transmissive part; a reflective part; and a latched driving circuit. The driving circuit comprises a transmissive section comprising a transmissive data input coupled to the transmissive part of the pixel, and is configured to drive a transmissive data value from the transmissive data input and to set the transmissive part to a transmissive display state based on the transmissive data value; a reflective section comprising a reflective data input (independent of the transmissive data input) coupled to the reflective part of the pixel, and is configured to drive a reflective data value from the reflective data input and to set the reflective part to a reflective display state based on the reflective data value. | 01-28-2010 |
20100020276 | TRANSFLECTIVE DISPLAY WITH WHITE TUNING - In an embodiment, a multi-mode LCD comprises pixels, each comprising sub-pixels, each sub-pixel comprising a first polarizing layer; a second polarizing layer; a first substrate layer and an oppositely oriented second substrate layer, the first and second substrate layers are between the first and second polarizing layers; a liquid crystal material between the first and second substrate layers; a first reflective layer that is adjacent to the first substrate layer and comprises at least one opening that forms a transmissive part of the sub-pixel and wherein a remainder of the first reflective layer that forms a reflective part of the sub-pixel; a first filter of a first color opposite to and covering the transmissive part with an area larger than that of the transmissive part; a second filter of a second color opposite to and partially covering the reflective part, wherein the second color is different from the first color. | 01-28-2010 |
20100026930 | DIFFRACTIVE LIQUID CRYSTAL DISPLAY - A liquid crystal display (LCD) comprises a light source; a light diffractor over the light source configured to diffract light received from the light source; a liquid crystal diffraction grating over the light diffractor and between liquid crystal pixel structures comprising a plurality of liquid crystal pixels; the liquid crystal diffraction grating has a changed diffraction index in response to application of a voltage differential across the diffraction grating, and when having the changed diffraction index aligns diffracted light received from the light diffractor into aligned light directed toward the liquid crystal pixel structure. An LCD may comprise a plurality of liquid crystal pixels each comprising a reflective part and a transmissive part, the reflective part of at least some of the plurality of liquid crystal pixels comprising a retroreflector configured to reflect at least some light rays, received from an external light source, toward the external light source. | 02-04-2010 |
20100225640 | Switching Operating Modes of Liquid Crystal Displays - In an embodiment, a computer comprises a liquid crystal display (LCD) operable in a transmissive mode, a reflective mode, and a transflective mode; a display driver coupled to the LCD; one or more processors coupled to the display driver; mode switching logic coupled to the one or more processors and/or to the display driver; one or more electronic input sources coupled to the mode switching logic and providing input signals to the mode switching logic, wherein the input signals represent states of ambient conditions, other computer elements, user input, or user applications of the computer; and the mode switching logic is configured to cause the one or more processors to perform receiving one or more of the input signals; based on the input signals, selecting a particular operational mode for the LCD from among the transmissive mode, the reflective mode, and the transflective mode; causing the LCD to operate in the particular operational mode. | 09-09-2010 |
20100225857 | BACKLIGHT RECIRCULATION IN TRANSFLECTIVE LIQUID CRYSTAL DISPLAYS - Techniques are provided to recycle light from a backlight unit that is otherwise blocked in a reflective part of a pixel in a transflective LCD. The light is redirected into a transmissive part of the pixel and hence enhances light efficiency and luminance of the pixel. The techniques can be used in a transflective LCD that transmits light in a circularly polarized state, or a linearly polarized state. | 09-09-2010 |
20110025960 | Transflective Display Sub-Pixel Structures - A liquid crystal display comprises a plurality of pixels, each pixel comprising three or more sub-pixels. A first sub-pixel of the three or more sub-pixels comprises a first transmissive part that has a first transmissive area, and a first reflective part having a first reflective area. A second sub-pixel comprises a second transmissive part that has a second transmissive area, and a second reflective part that has a second reflective area. A third sub-pixel comprises a third transmissive part that has a third transmissive area, and a third reflective part that has a third reflective area. At least two among the first transmissive area, the second transmissive area, and the third transmissive area are different in size. The first reflective area, the second reflective area, and the third reflective area are equal in size. | 02-03-2011 |
20110285684 | Low Power Consumption Transflective Liquid Crystal Displays - Techniques are provided to drive a normally white or mixed mode LCD with low voltages and low power consumption. A sub-pixel in the LCD may comprise a reflective part and a transmissive part. The cell gap for a liquid crystal layer in the sub-pixel may provide at least a half-wave phase retardation. A driving voltage range with a maximum voltage at a low value may be used to drive the reflective part and the transmissive part of the sub-pixel to various levels of brightness. | 11-24-2011 |
20120039034 | Transflective LCD With Arcuate Pixel Portions - Techniques are provided for a transflective liquid crystal display comprising a plurality of subpixels. Each subpixel comprises a reflective part having a reflective-part cell gap and a transmissive part having a transmissive-part cell gap. A subpixel may comprise minimal perimeters of a first minimal area between the transmissive part and the reflective part. At least one of the one or more minimal perimeters defines one or more edges of a second maximal area of the transmissive part. | 02-16-2012 |
20120120341 | Color Shift Reduction In Transflective Liquid Crystal Displays - Techniques are provided to reduce color shifts in an LCD. A sub-pixel in the LCD may comprise a reflective part and a transmissive part. The reflective and transmissive parts may be covered by one or more retardation films. To reduce color shifts in general and especially in oblique viewing angles, at least one retardation film in the sub-pixel may comprise a slow axis with an elevation angle from a surface of a substrate layer of the LCD. | 05-17-2012 |
20120127140 | MULTI-MODE LIQUID CRYSTAL DISPLAY WITH AUXILIARY NON-DISPLAY COMPONENTS - A liquid crystal display, alone or in combination with any kind of computing device, may comprise a plurality of pixels, each pixel comprising a plurality of sub-pixels, each sub-pixel comprising a transmissive part and a reflective part, wherein a cross sectional area of the reflective part is greater than half of a total cross sectional area of an entire size of that sub-pixel; one or more auxiliary components that are in a non-transmissive part of the sub-pixel and that are configured to provide one or more auxiliary functions that do not affect optical performance of that sub-pixel. In various embodiments the auxiliary components are electronic digital memory logic or drivers; electronic high refresh rate logic or drivers; touch sensor elements, and the display further comprising a touch panel sheet over the pixels; light sensors; photodiodes; photovoltaic solar power generating cells; organic light emitting diodes. | 05-24-2012 |
20120218487 | Patterned In-Cell Retarder For Transflective Vertically Aligned Liquid Crystal Display And Method of Fabrication - In an embodiment, a transflective LCD comprises pixels each comprising a first polarizing layer; a second polarizing layer; a first substrate layer and a second substrate layer opposite the first substrate layer; the first and second substrate layers are between the first polarizing layer and the second polarizing layer; a liquid crystal material between the first and second substrate layers; an over-coating layer adjacent to the first substrate layer; the over-coating layer comprises at least one opening for a transmissive part; a remainder of the over-coating layer forms in part a reflective part; a patterned in-cell retarder adjacent to the first substrate layer; the patterned in-cell retarder covers at least a portion of the reflective part; a reflective layer between the over-coating layer and the second substrate layer; the reflective layer substantially covers the reflective part; the patterned in-cell retarder is between the reflective layer and the first substrate layer. | 08-30-2012 |
20130187962 | Mixed Transmissive-Reflective-Transflective Liquid Crystal Display - A display panel comprises two or more display portions having two or more different types of pixels in two or more different spatial segments of the display panel. The display panel may be coupled to a display driving circuit configured to drive two or more display portions in two or more different spatial segments of the display panel to operate in two or more different display modes. | 07-25-2013 |
20150022424 | BEZEL PIXEL LAYER IN MULTI-PANEL DISPLAY - A multi-panel display system includes an array of display panels arranged to be viewed as a multi-panel display. The multi-panel display includes a bezel pixel layer covering a bezel region of the multi-panel display. The bezel region is between pixel regions of the display panels in the array. The multi-panel display system also includes a display engine communicatively coupled to drive the display panels to display image sections and communicatively coupled to drive the bezel pixel layer to display a bezel shaped image section. The image sections and the bezel shaped image sections are subsections of a unified overall-image to be displayed on the multi-panel display. | 01-22-2015 |
20150022727 | TILEABLE DISPLAY APPARATUS - A display apparatus includes a screen layer, an illumination layer, and a display layer. The screen layer is for displaying a unified image to a viewer on a viewing side of the screen layer. The illumination layer includes an array of light sources and each light source in the array is configured to emit a divergent projection beam having a limited angular spread. The display layer is disposed between the screen layer and the illumination layer. The display layer includes a matrix of pixelets and a spacing region disposed between the pixelets in the matrix. The array of light sources are positioned to emit the divergent projection beams having limited angular spread to project sub-images displayed by the pixelets as magnified sub-images on the backside of the screen layer. The magnified sub-images combine to form the unified image that is substantially seamless. | 01-22-2015 |
20150022754 | CONFIGURATIONS FOR TILEABLE DISPLAY APPARATUS WITH MULTIPLE PIXEL ARRAYS - A display including a screen layer for displaying a unified image to a viewer on a viewing side of the screen layer that is opposite a backside of the screen layer, and an illumination layer having an array of light sources. Each light source in the array is configured to emit a divergent projection beam having a limited angular spread. A display layer is disposed between the screen layer and the illumination layer, and includes a matrix of pixlets, a spacing region disposed between the pixlets in the matrix, wherein the array of light sources are positioned to emit the divergent projection beams having limited angular spread to project sub-images displayed by the pixlets as magnified sub-images on the backside of the screen layer, the magnified sub-images to combine to form a substantially seamless unified image, and one or more components positioned on the display layer in the spacing region. | 01-22-2015 |
20150023051 | OPTICAL CONFIGURATIONS IN A TILEABLE DISPLAY APPARATUS - A display apparatus including a screen layer for displaying a unified image to a viewer and an illumination layer having an array of light sources. Each light source emits a light beam. An array of optical elements, each coupled to a corresponding light source in the array of light sources, is disposed between the screen layer and the illumination layer. The display layer includes a matrix of pixlets and a spacing region disposed between the pixlets in the matrix, wherein the array of light sources emit their light beams through the array of optical elements, wherein each optical element is configured to shape the received light beam into a divergent projection beam having a limited angular spread to project sub-images displayed by the pixlets as magnified sub-images on the backside of the screen layer, the magnified sub-images to combine to form the unified image that is substantially seamless. | 01-22-2015 |
20150097837 | VARIABLE RESOLUTION SEAMLESS TILEABLE DISPLAY - A tileable display panel includes an illumination layer, a display layer, and a screen layer. The display layer is disposed between the screen layer and the lamp layer and includes pixelets separated from each other by spacing regions. Each of the pixelets is positioned to be illuminated by lamp light from the illumination layer and to project a magnified image sub-portion onto the backside of the screen layer such that the magnified image sub-portions collectively blend together to form a unified image on the screen layer which covers the spacing regions on the display layer. Each of the pixelets includes core pixels having a common size and a first separation pitch and peripheral pixels surrounding the core pixels on two or more sides which provide a higher image resolution in overlap regions on the screen layer when the magnified image sub-portions overlap on the screen layer. | 04-09-2015 |
20150097853 | DYNAMIC BACKLIGHT CONTROL FOR SPATIALLY INDEPENDENT DISPLAY REGIONS - Embodiments of the disclosure describe a tileable display panel including a screen layer to display a unified image, an illumination layer including a two-dimensional array of lamps, and a display layer disposed between the screen layer and illumination layer. The display layer includes a plurality of pixelets each positioned to be illuminated by a corresponding lamp from the illumination layer to project a magnified image sub-portion corresponding to a received subset. The magnified image sub-portions collectively blend together to form the unified image displayed on the screen layer. Embodiments of the disclosure further include illumination layer control logic to determine a brightness value of each of the received subsets of pixel data, and adjust an illumination setting to reduce or increase an illumination output of a lamp in the illumination layer based, at least on part, on the brightness values of the corresponding subset of pixel data. | 04-09-2015 |
20150138755 | SEAMLESS TILEABLE DISPLAY WITH PERIPHERAL MAGNIFICATION - A tileable display panel includes a screen layer, a display layer, and an illumination layer. The display layer includes a plurality of transmissive pixels to collectively project a unified image onto the backside of the screen layer. The transmissive pixels disposed within a perimeter region of the display layer have smaller transmission apertures than the transmissive pixels disposed within a central region of the display layer. The illumination layer generates lamp light to illuminate a backside of the display layer. The illumination layer is coupled to generate the lamp light incident on the backside of the display layer in the perimeter region with greater divergence than the lamp light incident on the backside of the display layer in the central region. | 05-21-2015 |
20150153023 | MULTI-APERTURE ILLUMINATION LAYER FOR TILEABLE DISPLAY - A tileable display panel includes a screen layer, an illumination layer and a display layer. The screen layer is for displaying a unified image to a viewer. The illumination layer includes at least one light source emitting lamp light into a diffusing region of the illumination layer. The illumination layer also includes a plurality of emission apertures that are each configured to emit the lamp light from the diffusing region in a divergent projection beam. The display layer is disposed between the screen layer and the illumination layer. The display layer includes a plurality of pixelets corresponding to the plurality of emission apertures. The pixelets in the plurality of pixelets are positioned to be illuminated by the divergent projection beams from the corresponding emission apertures. | 06-04-2015 |