Display device having optical waveguides and light-emitting units

A display device comprising:

• a display panel having a light-emitting unit for emitting light according to predetermined display data;
• a plurality of elongated optical waveguide units that are arranged on a plane of a surface of a display region of the display panel, wherein the plurality of elongated optical waveguide units each are straight and each have a side face, a front face at a first end, a back face at a second end, and a core layer;
• and
• an addressing unit for selecting the light from the light waveguide units according to the predetermined display data,
• wherein the core layer includes a light scattering liquid crystal,
• wherein the light emitted from the light-emitting unit directly enters each of the plurality of elongated optical waveguide units through the front face of the elongated optical waveguide unit,
• wherein the addressing unit has a plurality of column electrodes and a plurality of row electrodes, wherein each of the plurality of column electrodes is provided in the core layer of one of the plurality of elongated optical waveguide units, wherein the plurality of elongated optical waveguide units and the plurality of row electrodes are weaved with each other, wherein each of the plurality of elongated optical waveguide units has a greater diameter than each of the row electrodes,
• wherein the addressing unit allows the entered light to be emitted from the side face at a predetermined part of each of the plurality of optical waveguide units by using a light scattering operation of the light scattering liquid crystal and the emitted light from the side face is displayed at the display region,
• wherein between the front face and the predetermined part of each of the plurality of elongated optical waveguide units a) the entered light travels through the elongated optical waveguide unit while totally reflecting inside the elongated optical waveguide unit and b) the elongated optical waveguide unit exclusively provides all travel paths for the entered light.