Display device and illumination device

• Main Author: Koito, Takeo
• Format: Patent
• Language: English
• Published: 20.08.2019
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

According to one embodiment, a display device includes a display panel and an illumination device. The illumination device includes a light source unit, at least one light-shielding body which blocks part of the light emitted from the light source unit, at least one lens which refracts the light emitted from the light source unit, and an illumination controller. The illumination controller controls a first mode in which the light-shielding body and the lens are arranged at a first position, and a second mode in which at least one of the light-shielding body and the lens is arranged at a second position, which is different from the first position.