LIGHT EMITTING MODULE AND METHOD FOR DRIVING LIGHT EMITTING DEVICE

• Main Authors: YOSHINAGA SATOSHI, MORI KANA
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2021
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; 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; DYES; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; SEMICONDUCTOR DEVICES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A method for driving a light emitting device (40) comprising a light emitting element (60) and a light emitting portion (50) including two or more types of phosphor (52) which are excited by the light emitting element (60) and have different afterglow characteristics. An energization period (20) of the light emitting device (40) comprises: a maximum current supply period (21) for supplying a maximum current (I11) of the energization period (20) to the light emitting element (60); and a current decrease period (22) for, after the maximum current supply period (21), causing the current supplied to the light emitting element (60) to be decreased continuously or gradually from the maximum current (I11). 在发光装置(40)的驱动方法中，发光装置(40)包括：发光元件(60)；以及发光部(50)，包括由上述发光元件(60)激励的、余辉特性不同的两种以上的荧光体(52)，上述发光装置(40)的通电期间(20)包括：向上述发光元件(60)供给上述通电期间(20)中的最大电流(I11)的最大电流供给期间(21)；以及接着上述最大电流供给期间(21)之后使向上述发光元件(60)供给的电流从上述最大电流(I11)连续性地或者阶段性地降低的电流降低期间(22)。