Electronic device, light-guide plate and illuminating device with non-illuminous display device

• Main Author: GOTO, YOUICHIRO
• Format: Patent
• Language: English
• Published: 01.12.2004
• Edition: 7
• Subjects: BLASTING; 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; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

Provided is an electronic device having a reflective liquid crystal display device with a front light and a good display performance for utility, wherein the occurrence of parallax in the observed display is suppressed. Also provided are an illuminating device wherein the occurrence of parallax in the observed display can be suppressed and a light guide plate adapted to be used for said illuminating device. On the opposite surface 10 of light guide plate 5, a first inclined plane 11 slant to the side of incoming plane 8 and a second incline plane 12 slant to the side of plane 13 opposite to the incoming plane 8 are alternately formed. Crest lines and valley lines which are respectively parallel to each other are constituted by the first inclines plane 11 and second inclined plane 12. The second inclined plane 12 which constitutes the valley line with the first inclined plane 11 is located in the upper direction of the body of electronic device 11.