The present invention reliably and sufficiently corrects a voltage variation in data signal lines in a display device resulting when sampling analog video signals, while suppressing increase in layout area. In a data signal line drive circuit of an active matrix liquid crystal display device, a video signal Svi is sampled by an Nch transistor (SWk) which has a parasitic capacitance (Cgd) that causes a voltage drop in a data signal line SL3(i−1)+k (i=1 through n; k=1, 2, 3). To correct this, an inversion delayer (342) makes logical inversion of the transistor (SWk)'s control signal Sck and delays the inverted signal for a predetermined time to generate an inversion delayed signal Srdk, and applies this inversion delayed signal Srd to the data signal line 3(i−1)+k via a correction capacitance element (Cc). The inversion delayer (342) makes the inversion delayed signal Srdk start its change from an L level voltage to a H level voltage after the Nch transistor (SWk) has assumed an OFF state.

The present invention reliably and sufficiently corrects a voltage variation in data signal lines in a display device resulting when sampling analog video signals, while suppressing increase in layout area. In a data signal line drive circuit of an active matrix liquid crystal display device, a video signal Svi is sampled by an Nch transistor (SWk) which has a parasitic capacitance (Cgd) that causes a voltage drop in a data signal line SL3(i−1)+k (i=1 through n; k=1, 2, 3). To correct this, an inversion delayer (342) makes logical inversion of the transistor (SWk)'s control signal Sck and delays the inverted signal for a predetermined time to generate an inversion delayed signal Srdk, and applies this inversion delayed signal Srd to the data signal line 3(i−1)+k via a correction capacitance element (Cc). The inversion delayer (342) makes the inversion delayed signal Srdk start its change from an L level voltage to a H level voltage after the Nch transistor (SWk) has assumed an OFF state.

In one embodiment, the system may determine an estimated distance of an eye of a user to a display plane of a display. The system may access, from a memory storage, a number of transmission maps characterizing non-uniform transmission characters of the display as measured from a number of pre-determined view positions within a measurement plane. The measurement plane may be separated from the display plane by a known distance. The system may generate a custom transmission map for the estimated distance of the eye based on the transmission maps using light field rendering. The system may determine a custom correction map based on the custom transmission map. The system may adjust an image to be displayed on the display using the custom correction map. The system may display the image adjusted using the custom correction map on the display.

Embodiments of the present disclosure provide techniques and configurations for an apparatus for display screen light brightness adjustment. In one instance, the apparatus may include a display screen with a screen light having a brightness value. The apparatus may include one or more sensors disposed in the apparatus to measure ambient light and to measure one or more parameters indicative of a presence or absence of reflection of the screen light to the display screen, wherein the reflection contributes to the ambient light measurement. The apparatus may further include and a processing module coupled with the sensor module to adjust or cause to be adjusted the brightness value of the display screen light, based at least in part on the measurements of the ambient light and the parameters indicative of presence or absence of reflection of the screen light to the display screen. Other embodiments may be described and/or claimed.

Embodiments of the present disclosure provide techniques and configurations for an apparatus for display screen light brightness adjustment. In one instance, the apparatus may include a display screen with a screen light having a brightness value. The apparatus may include one or more sensors disposed in the apparatus to measure ambient light and to measure one or more parameters indicative of a presence or absence of reflection of the screen light to the display screen, wherein the reflection contributes to the ambient light measurement. The apparatus may further include and a processing module coupled with the sensor module to adjust or cause to be adjusted the brightness value of the display screen light, based at least in part on the measurements of the ambient light and the parameters indicative of presence or absence of reflection of the screen light to the display screen. Other embodiments may be described and/or claimed.

According to an example, a system for electronic display illumination comprises a display, a sensor communicatively coupled to the display to detect a user and a user eye gaze, and a processing resource communicatively coupled to the sensor. In some examples, the processing resource may determine an active screen area and an inactive screen area of the display based on the user eye gaze; instruct a display controller to adjust a display value of the inactive screen area; and transmit active screen area data to a secondary display.

According to an example, a system for electronic display illumination comprises a display, a sensor communicatively coupled to the display to detect a user and a user eye gaze, and a processing resource communicatively coupled to the sensor. In some examples, the processing resource may determine an active screen area and an inactive screen area of the display based on the user eye gaze; instruct a display controller to adjust a display value of the inactive screen area; and transmit active screen area data to a secondary display.

Systems and methods are disclosed for adjustable polarization in service-providing terminals. In some embodiments, a system is disclosed that includes a display, an input device, an adjustable polarization screen adjacent to the display, and a polarization adjuster. The system may further include a processor configured to execute instructions to perform operations comprising providing illumination to the adjustable polarization screen through the display, controlling, via the polarization adjuster, a polarization of the adjustable polarization screen to a first polarization, receiving, via the input device, a polarization selection input, and, based on the polarization selection input, adjusting, via the polarization adjuster, the polarization of the adjustable polarization screen from the first polarization to a second polarization.

Systems and methods are disclosed for adjustable polarization in service-providing terminals. In some embodiments, a system is disclosed that includes a display, an input device, an adjustable polarization screen adjacent to the display, and a polarization adjuster. The system may further include a processor configured to execute instructions to perform operations comprising providing illumination to the adjustable polarization screen through the display, controlling, via the polarization adjuster, a polarization of the adjustable polarization screen to a first polarization, receiving, via the input device, a polarization selection input, and, based on the polarization selection input, adjusting, via the polarization adjuster, the polarization of the adjustable polarization screen from the first polarization to a second polarization.

A method to improve display performance at edges of a circular display screen is provided. The method comprises determining an edge area and a central area of the circular display screen, the edge area surrounding the central area; along a direction from a geometric center of the circular display screen to the edge area of the circular display screen, dividing the edge area into n display regions each having a different luminance-level, where n is a positive integer larger than 1; and according to luminance of pixels in the central area and the luminance-level of each of the n display regions, adjusting the luminance of the pixels in each of the n display regions to corresponding target luminance. Along the direction from the geometric center to the edge area of the circular display screen, the corresponding target luminance of the pixels in the n display regions sequentially decreases.