US 2019/0196273 A1 · DISPLAY APPARATUS AND METHOD FOR CONTROL THEREOF

Abstract

A display apparatus includes a display panel, a light guide plate disposed under the display panel, a first reflective sheet disposed under the light guide plate, an edge type backlight including a plurality of light emitting diodes disposed on at least one side surface of the light guide plate, a top view type backlight including at least one light emitting diode disposed under the light guide plate at a position corresponding to a partial area of the display panel, and a processor configured to turn on one of the edge type backlight and the top view type backlight according to a display mode, wherein an area corresponding to the top view type backlight of the first reflective sheet is formed of a material having a greater refractive index than the light guide plate.

Claims20

Dependent claims

A display apparatus, comprising:

a display panel;
a first reflective sheet including a partial area having a first refractive index;
a light guide plate disposed between the display panel and the first reflective sheet, and having a second refractive index less than the first refractive index;
an edge type backlight including a plurality of light emitting diodes and disposed at an edge of the light guide plate;
a top view type backlight including at least one light emitting diode and disposed at an opposite side of the first reflective sheet from the light guide plate at a position corresponding to the partial area of the first reflective sheet;
and
a processor configured to selectively turn on one of the edge type backlight and the top view type backlight according to a display mode.

4 more elements

A method for controlling a display apparatus including a display panel, a first reflective sheet including a partial area having a first refractive index, a light guide plate disposed between the display panel and the first reflective sheet, and having a second refractive index less than the first refractive index, an edge type backlight including a plurality of light emitting diodes and disposed at an edge of the light guide plate, a top view type backlight including at least one light emitting diode and disposed at an opposite side of the first reflective sheet from the light guide plate at a position corresponding to the partial area of the first reflective sheet, the method comprising:

identifying, by a processor of the display apparatus, a display mode of the display apparatus as a first display mode where an entirety of the display panel of the display apparatus is illuminated by the edge type backlight of the display apparatus and a second display mode where only a portion of the display panel of the display apparatus is illuminated by the top view type backlight of the display apparatus;
and
selectively turning on, by the processor of the display apparatus, one of the edge type backlight and the top view type backlight according to the identified display mode.

Dependencies are inferred from the claim text.

Display apparatus and method for control thereof

Life of this patent

Display apparatus and method for control thereof

Life of this patent

Abstract

Claims20