The invention relates to a display screen comprising: a housing forming an enclosure; a display surface on the front face of the housing; a printed circuit board arranged inside the housing; and at least one light-emitting diode that forms a back-lighting source for the display surface and is arranged on a face of the printed circuit board. The display screen is characterized in that the printed circuit board is a single-face printed circuit board, the display screen comprises a thermoconductive plate arranged against the face of the printed circuit board opposite the one carrying the at least one light-emitting diode, and the display screen also comprises a second double-face printed circuit board that has a smaller surface than the single-face printed circuit board, is connected to said single-face printed circuit board by at least one electrical connection, and carries at least one element for controlling the back-lighting of the display surface.
Backlit display screen including light emitting diode
2016-12-20
Patent
Electronic Resource
English
IPC: | H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / G09F DISPLAYING , Anzeigewesen / H05K PRINTED CIRCUITS , Gedruckte Schaltungen |
Outdoor light-emitting diode (LED) electronic display screen
European Patent Office | 2021
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