Abstract: The disclosure provides a light guide plate, a backlight unit, a display device and a display control system. The light guide plate has a first operation state and a second operation state. In the first operation state, an upper surface of the light guide plate is a surface where light comes out, and in the second operation state, the upper surface of the light guide plate includes a light exiting region and a non-light exiting region. In the technical solution of the present disclosure, when the display device performs a regional displaying, the light guide plate operates in the second operation state, here the upper surface of the light guide plate includes the light exiting region and the non-light exiting region; light emitted by a light source finally comes out from the light exiting region of the light guide plate after reflections inside the light guide plate.

Abstract: A backlight module includes: a first frame having a first portion parallel to the display substrate; and a first light shielding structure provided between the first portion and the display substrate, wherein a vertical projection of the first light shielding structure on a plane in which the display substrate is located at least partially overlaps with at least one substrate light shielding structure adjacent to an edge of the display substrate. An embodiment of the present invention further provides a display device including the backlight module described above.

Abstract: A light guide plate assembly comprising: a first substrate which is transparent and positioned on a light-emitting side of the light guide plate assembly; a second substrate which is disposed opposite to the first substrate; and a plurality of light modulation units which are disposed between the first substrate and the second substrate, wherein each of the light modulation units comprises: a first electrode which is disposed adjacent to the first substrate; a second electrode which is disposed adjacent to the second substrate, wherein the first electrode and the second electrode are configured to generate an electric field therebetween; and an electrophoretic capsule layer which is positioned between the first electrode and the second electrode and comprises an electrophoretic capsule containing white electrophoretic particles and black electrophoretic particles which are dispersed in transparent dispersing medium and are oppositely charged.