摘要:
A device (100) includes a display (102, 800) that is suitable for use under widely ranging lighting conditions. The display includes separately operable transmissive light modulator subpixels (402, 404, 406, 502, 504, 506, 602, 604, 606, 702, 704, 706, 808, 810, 812, 1036, 1136, 1204, 1304, 1404, 1504, 1716, 1916) that can be provided in at least three colors to provide a full color display but also includes separately operable reflective light modulator subpixels (408, 508, 608, 708, 814, 1038, 1138, 1202, 1302, 1402, 1502, 1714, 1914) that provide basic readability when light levels are so high (e.g., bright summer day) that the image presented by the transmissive light modulators would be difficult to discern. The reflective light modulators may be provided with in-pixel memory (526) so as to reduce the energy cost of providing always-on functioning for displaying certain time sensitive information.
摘要:
A liquid crystal display according to an exemplary embodiment of the present invention includes a first and second substrate facing each other (100,200), a liquid crystal layer (3) interposed between the substrates, a plurality of gate lines (G m ) disposed on the first substrate, configured to transmit a gate signal, at least one data line (D j ) disposed on the first substrate, configured to transmit a data signal, a plurality of power supplying lines (C high ,C low ) disposed on the first substrate, a plurality of switching elements variously connected to the gate lines, data lines, and power supplying lines, a plurality of pixel electrodes (PE,PE a ,PE b ) connected to the switching elements, wherein corresponding pixel electrodes are separated from each other.
摘要:
A method is provided for driving a display device comprising an array of rows and columns of display pixels, each pixel comprising particles which are moved to control the display state of the pixel. A display addressing mode is provided for writing an output image on a display, which has a line-by-line partial writing operation (to a temporary storage electrode) and a parallel writing operation to finish off the writing of the display. This enables a reduction in addressing time, as the distance of movement of the particles is reduced during the line-by-line phase, so that the line time can be reduced. The writing is then completed with a parallel phase for all the display, and the overall writing time is reduced. A further mode is provided to enable even more rapid writing of lines, and this can be used to modify images even more rapidly, but only with simple line-based modifications.
摘要:
A liquid crystal display comprising first and second liquid crystal display panel (1, 3), each defining an array of picture elements (13, 15). The resolution of the image displayed on the second liquid crystal display panel (3) is lower than that of the image displayed on the first liquid crystal display panel (1). The picture elements (15) of the second liquid crystal display panel (3), located between the first liquid crystal display panel (1) and backlighting means (2) may be relatively large and preferably partially overlap at least in one direction. A charge is selectively applied to the picture elements (15) of the second liquid crystal display panel (3) corresponding to the relatively darker portions of the image to be displayed on the first liquid crystal panel (1), so as to at least limit the amount of light reaching these portions of the first liquid crystal display panel (1) and thereby increasing the contrast trio of the device. In an alternative embodiment, the image displayed on the second liquid crystal display panel (3) may be blurred relative to the image displayed on the first liquid crystal display panel (1) and/or the image displayed on the first liquid crystal display panel (1) may be sharpened relative to the image displayed on the second liquid crystal display panel (3 ) .
摘要:
A n-channel TFT (L) (26) which is connected to a transparent pixel electrode (24) and a p-channel TFT (D) (27) which is connected to the cathode side of a photodiode (25) are connected to a common source line (22) and a common gate line (23). When a positive voltage (VL) or a negative voltage (VD) are applied to the gate line (23), both the TFTs can be independently controlled to be in a ON-state. A backlight (18) which is provided on the rear of an active matrix panel (13) has monochromatic light sources (18a - 18c) emitting red, blue and green lights, and images of the colors are displayed in a time-division manner. When the images are read, by using the monochromatic light sources (18a - 18c) successively, the red, blue and green component images are read for every pixel. Only the parts of a liquid crystal layer (14) corresponding to every other pixel (P1) in the vertical and horizontal directions are brought into light transmitting states, a certain amount of charge is stored only in the photodiodes (25) of the pixels (P1), and the photodiodes (25) are exposed to light. Then the image formed by the pixels (P1) is read. The similar processes for the pixels adjacent to the pixels (P1) are repeated to read the image of the original for all the pixels.
摘要:
A colour display device based on dielectrophoresis is described. The device includes a dielectrophoretic mixture comprising semi-insulating particles of each of the subtractive primary colours cyan (32), magenta (34) and yellow (36) in a semi-insulating liquid (24). The dielectrophoretic frequency characteristics of the particles are the same or similar for particles of the same colour but different between the three colours. In particular, the transition frequency (f0) is different for each colour, or two colours may have the same transition frequency (f0) if one has a reversed sense dielectrophoretic frequency characteristic. Also the speeds of the particles are the same for particles of the same colour but different between the three colours. The pixels are driven with alternating voltages of different frequencies (f1, f2, f3, f4) and duration determined such that different proportions of the different colours of particles are moved, dependent upon their transition frequencies and speeds. A reflective, saturated full colour display device may thereby be provided.
摘要:
An array substrate (10) comprises a pixel electrode (3) provided in each of the regions defined by adjacent two gate lines (1) and two source lines (2), a switching element (5) for switching the voltage applied to the pixel electrode (3) from the source line (2) according to the signal voltage inputted from the gate line (1), a common line (8) provided between adjacent two gate lines (1), and a common electrode (4) electrically connected to the common line (8) and adapted to generate an electric field for driving a liquid crystal between the common electrode (4) and the pixel electrode (3) to which the voltage is applied. The pixel electrode (1) has first and second pixel electrodes (1a, 1b). An opposed electrode (2) has first and second opposed electrodes (2a, 2b). A first region is defined where an electric field is generated between the first pixel electrode (1a) and the first opposed electrode (2a) having a light transmittance lower than that of the first pixel electrode (1a), and a second region is defined where an electric field is generated between the second pixel electrode (1b) and the second opposed electrode (2b) having a light transmittance higher than that of the second pixel electrode (1a).
摘要:
LC display device based on 'in plane switching', in which the switching speed is increased by overdriving the pixels upon a change of the voltage across these pixels while taking, for example, the hydrodynamical properties of the LC material into account. The correction means may also correct for changes of ambient or liquid temperature.