公开(公告)号：US11841586B1

公开(公告)日：2023-12-12

申请号：US17870125

申请日：2022-07-21

Applicant: Dell Products L.P.

Inventor： Ching-Feng Chen ,  Chao-Kai Huang ,  Yi-Fan Wang ,  Meng-Feng Hung ,  Wei-Ching Hsu

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133612 ,  G02F1/133603 ,  G02F1/133608

Abstract: A liquid crystal display has position-adjustable light sources. The light sources may be lamps, LEDs, or other emissive components. The light sources, however, are movable to adjust the locations or positions of their light outputs. The light sources ride upon electromagnet carriers. When currents are applied to the electromagnet carriers, each electromagnet carrier creates a corresponding magnetic field. The magnetic fields cause neighboring electromagnet carriers to attract or to repel, depending on the magnitude/polarity of the currents. The lateral and vertical positions of the electromagnet carriers may thus be adjusted by varying their respective currents and magnetic fields. Because the light sources ride on the electromagnet carriers, the light sources may be moved to refine an image generated by the liquid crystal display. The light sources, for example, may be moved to improve white/black contracts to reduce halo-effects.

公开(公告)号：US10859872B2

公开(公告)日：2020-12-08

申请号：US16103227

申请日：2018-08-14

Applicant: DELL PRODUCTS L.P.

Inventor： Ching-Feng Chen ,  Meng-Feng Hung ,  Yu-Lung Lin ,  Yi-Fan Wang ,  Wei-Sung Lin

IPC: G02F1/13357 ,  G09G3/36

Abstract: A system comprising a display, a display cover, a plurality of sensors disposed between the display and the display cover and a lighting control system coupled to the display and the plurality of sensors, the lighting control system configured to receive one or more signals from the plurality of sensors and to reduce a backlight level of a subgroup of lighting elements associated with the one or more sensors associated with the one or more signals, wherein the subgroup of lighting elements is one of a plurality of subgroups of lighting elements of the display.

公开(公告)号：US20200057342A1

公开(公告)日：2020-02-20

申请号：US16103227

申请日：2018-08-14

Applicant: DELL PRODUCTS L.P.

Inventor： Ching-Feng Chen ,  Meng-Feng Hung ,  Yu-Lung Lin ,  Yi-Fan Wang ,  Wei-Sung Lin

IPC: G02F1/1335 ,  G09G3/36

Abstract: A system comprising a display, a display cover, a plurality of sensors disposed between the display and the display cover and a lighting control system coupled to the display and the plurality of sensors, the lighting control system configured to receive one or more signals from the plurality of sensors and to reduce a backlight level of a subgroup of lighting elements associated with the one or more sensors associated with the one or more signals, wherein the subgroup of lighting elements is one of a plurality of subgroups of lighting elements of the display.