Abstract: A system for monitoring a fatigue level of an operator of a vehicle includes a sensor configured to generate a signal indicative of a physiological state of the operator; a display for the operator; and a controller to: receive, from the sensor, the signal; determine the fatigue level of the operator by analyzing the received signal using an algorithm developed using operator fatigue statistics; generate a real-time fatigue report for the operator based on the determined fatigue level of the operator; transmit the generated real-time fatigue report to the display for the operator for display to the operator, and a display for a dispatcher for the vehicle for display to the dispatcher; generate an anonymized version of the real-time fatigue report; and transmit the anonymized version of the real-time fatigue report to a cloud for access by remote users.

Abstract: A system for monitoring a fatigue level of an operator of a vehicle includes a sensor configured to generate a signal indicative of a physiological state of the operator; a display for the operator; and a controller to: receive, from the sensor, the signal; determine the fatigue level of the operator by analyzing the received signal using an algorithm developed using operator fatigue statistics; generate a real-time fatigue report for the operator based on the determined fatigue level of the operator; transmit the generated real-time fatigue report to the display for the operator for display to the operator, and a display for a dispatcher for the vehicle for display to the dispatcher; generate an anonymized version of the real-time fatigue report; and transmit the anonymized version of the real-time fatigue report to a cloud for access by remote users.

Abstract: A transflective liquid crystal display comprising a plurality of pixels, each pixel comprising a liquid crystal layer (3) sandwiched between a front substrate (1) and a back substrate (2), and an optical layer (7) comprising a birefringent material, said pixels being divided into at least one transmissive (5) and at least one reflective subpixel (4), and said optical layer (7) being at least partly sandwiched between the liquid crystal layer (3) and one of said front substrate (1) or back substrate (2), and being patterned into domains (8, 9), each domain covering at least part of a reflective subpixel (4) or at least part of a transmissive subpixel (5).

Abstract: An active matrix display device having touch input functionality is provided. The device comprises a plurality of pixels arranged in a row and column array, each pixel comprising a pixel electrode (11) to which data voltages can be supplied by an associated data conductor (12) via a respective thin film transistor (13) having a drain terminal connected to the pixel electrode. The pixels each further comprise a body (30;70;80) which electrically connects the associated pixel electrode to another electrode (51;14) in response to touch-input to the pixel, the connection being detectable via the associated data conductor. The circuitry used to address the display can also be used to detect any touch-input to the display, including pressure-sensitive and optical touch-input. This advantageously eliminates the requirement for extra conductors to perform the touch-input detection.

Abstract: The invention relates to a display device comprising a liquid crystal material between a first substrate provided with row or selection electrodes and a second substrate provided with column or data electrodes, in which overlapping parts of the row and column electrodes define pixels, and drive means for driving the column electrodes in conformity with an image to be displayed. Such display devices are used in, for example portable apparatuses such as laptop computers, notebook computers and telephones.

Abstract: This invention relates to a transflective liquid crystal display device, comprising an upper first substrate (2), a lower second substrate (3), comprising means for defining reflective (12) and transmissive parts (13) of the display. A liquid crystal layer (4) is arranged between the first substrate (2) and the second substrate (3). For the reflective parts (12), a reflective layer (5) is provided to reflect ambient light falling into the display device. The transflective LCD device further comprises an in-cell retardation layer (7) at least for the reflective parts (12), being arranged between said reflective layer (5) and the liquid crystal layer (4). Preferably the in-cell retardation layer (7) also extends over the transmissive parts (13).

Abstract: A transflective Liquid Crstal Display device has a liquid crystalline (LC) cell with reflective portions (101 R) and transmissive portions (101 T). The LCD device has a dual cell-gap design, the cell gap (dT) for the transmissive portions differs from the cell gap (dR) for the reflective portions. According to the invention, this cell gap difference is effected by means of an optical retarder (120) inside the LC cell. A thickness of said optical retarder (120) is such as to compensate the difference in cell gaps. Preferably, the optical retarder is a patterned retarder extending essentially only over the reflective portions (101 R) of the cell, and having quarter wave retardance.

Abstract: A reflective or transflective Liquid Crystal Display (LCD) device (100) is provided with driving means (110) operable in at least two modes, namely an active mode and a power saving standby mode. According to the invention, the (LCD) is of the normally black type, wherein a minimum driving voltage corresponds to the dark state and a maximum driving voltage corresponds to the bright state. Because of this, in the standby mode the maximum driving voltage may be altered, thereby affecting the bright state. Thus, the contrast ratio of the (LCD) remains relatively high in the standby mode. Preferably, the (LCD) comprises a layer (130) of a vertically aligned liquid crystal material.

Abstract: By giving the picture electrodes (15) in liquid crystal displays based on bistable nematic effects a comb structure with varying distance between teeth (23) of the comb, or a comb structure having a varying width of at least one tooth of the comb, more stable gray levels are obtained.

Abstract: This invention relates to a liquid crystal display device with at least a first pixel (9a, 19a) comprising a first liquid crystal material layer segment (1a, 11a) having a first twist angle, and a second pixel (9b, 19b) comprising a second liquid crystal material layer segment (1b, 11b) having a second twist angle. A first and a second color filter (7a, 7b) are arranged in line with said first and second liquid crystal material layer segments (1a, 11a; 1b, 11b), respectively, said color filters (7a, 7b) being arranged to transmit light of a first and a second wavelength, respectively, wherein said first twist angle is chosen for essentially optimal transmission of said first wavelength, and said second twist angle is chosen for essentially optimal transmission of said second wavelength through said display device.

Abstract: A twisted nematic bistable liquid crystal (2) switching between two stable states in a high voltage mode is used in an AMLCD low voltage drive. The picture electrodes (14) and the counter electrode (15) are part of an active matrix, enabling the display to be used also in a fast video mode. Thus, a bistable liquid crystal display device is provided which has two drive modes, a low frequency mode, (first drive mode, also called “bistable mode”, “passive mode” or “high voltage mode”) for applications requiring slower switching times and lower power consumption and a high frequency mode (second drive mode, also called “active mode, “active matrix drive mode” or “fast video mode”) for grey scale images and video applications.