Display device comprising a light guide

• Main Authors: VAN GORKOM GERARDUS G.P, DUINE PETER A, BONGAERTS PETRUS F, MARRA JOHANNES, DEN BIGGELAAR JOHANNES G.A, SCHUURBIERS ROLAND M
• Format: Patent
• Language: English
• Published: 28.07.2005
• Edition: 7
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; BLASTING; CRYPTOGRAPHY; 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; DISPLAY; DISPLAYING; EDUCATION; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LABELS OR NAME-PLATES; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SIGNS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

The invention relates to a display device ( 10 ) comprising a light guide ( 2 ) and a plate ( 4 ), which extend essentially parallel in a mutually spaced relationship, said display device further comprising a movable element ( 3 ) which is arranged between the light guide and the plate in a spaced relationship to the light guide, selection means ( 5, 6 ) to locally bring said movable element into contact with the light guide, and a number of spacing elements ( 13 ) arranged on the light guide or the plate for maintaining the space between the movable element and the light guide and the plate, respectively, characterized in that the spacing elements form an integral part of the movable element. The invention also relates to a method of producing the display device according to the invention.