Patent ID: 7592988

Claim:
A display device comprising: a display panel having a light-emitting unit for emitting light according to predetermined display data; an elongated optical waveguide unit that is arranged on a plane of a surface of a display region of the display panel, wherein the elongated optical waveguide unit is straight and has 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 unit 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 the elongated optical waveguide unit through the front face, wherein the addressing unit has a column electrode and a row electrode, wherein the column electrode is provided in the core layer of the elongated optical waveguide unit, wherein the elongated optical waveguide unit and the row electrode are weaved with each other, wherein the elongated optical waveguide unit has a greater diameter than the row electrode, wherein the addressing unit allows the entered light to be emitted from the side face at a predetermined part of the optical waveguide unit 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 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.