US 2010/0141176 A1 · LIGHT EMITTING DIODE DISPLAY DEVICE AND PORTABLE TERMINAL DEVICE

Abstract

A light emitting diode display in which the light emitted from each LED is not mixed easily when two LEDs arranged closely are lighted. An LED (1) and an LED (2) are arranged diagonally to oppose the long sides of a substantially rectangular parallelepiped lens (3). The LED (1) and the LED (2) emit light such that the light emitted to the long side face portion of the lens (3) is invariant. The lens (3) has a function for reflecting the light emitted from the LED (1) and the LED (2) is reflected at cuts (34-36) and protrusions (31-33). Consequently, the light emitted from the LED (1) and the LED (2) exits holes in the display side case (10) made in accordance with three light emitting portions (31-33) in the lens (3). Consequently, a user can view the light of the LED (1) and the LED (2) under unmixed sate from the front side of the hole in the display side case (10).

Claims12

Dependent claims

A light emitting diode display device comprising:

a plurality of light emitting diodes;
and
a light guide unit for guiding a light beam emitted by each of the plurality of light emitting diodes,
wherein the plurality of light emitting diodes are respectively arranged in such a manner that the light emitting surface of each of the light emitting diodes faces the light guide unit, and that the light beams emitted by the respective light emitting diodes are prevented from intersecting each other, and wherein a plurality of emitting sections are provided on one surface of the light guide unit.

1 more element

A portable terminal device comprising:

a light emitting diode display device which includes a plurality of light emitting diodes, and a light guide unit for guiding a light beam emitted by each of the respective plurality of light emitting diodes, in which the plurality of light emitting diodes are respectively arranged in such a manner that the light emitting surface of each of the light emitting diodes faces the light guide unit, and that light beams emitted by the respective light emitting diodes are prevented from intersecting each other, and in which a plurality of emitting sections are provided on one surface of the light guide unit;
and
a control unit for controlling the second light emitting diode to start light emission after a predetermined time elapses from the time when the first light emitting diode of the plurality of light emitting diodes is made to start light emission, and starting the control to stop the light emission of the second light emitting diode after a predetermined time elapses from the time when control to stop the light emission of the first light emitting diode is started.

Dependencies are inferred from the claim text.

Light emitting diode display device and portable terminal device

Life of this patent

Light emitting diode display device and portable terminal device

Life of this patent

Abstract

Claims12