LIGHT EMITTING DEVICE AND ELECTRONIC EQUIPMENT

PROBLEM TO BE SOLVED: To provide a light emitting device suppressing the error of drive current for a plurality of tones. SOLUTION: A driver unit DUj latches specification data Dx using a shift register 510 and a latch circuit 520. The latched specification data Dx is supplied to an amplitude contro...

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Bibliographische Detailangaben
1. Verfasser:	KITAZAWA SACHIYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION BASIC ELECTRIC ELEMENTS CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY PHYSICS SEALS SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light emitting device suppressing the error of drive current for a plurality of tones. SOLUTION: A driver unit DUj latches specification data Dx using a shift register 510 and a latch circuit 520. The latched specification data Dx is supplied to an amplitude control circuit 540. The specification data Dx consists of magnification bits and specification bits. The amplitude control circuit 540 creates an output signal 540A by amplifying or attenuating a lamp signal Vr according to the specification data Dx. An offset circuit 550 creates an output signal 550A by adding a first offset voltage Vofs1 and a second offset voltage Vofs2 to the output signal 540A. A voltage follower 560 converts the impedance of the output signal 550A to output as a drive signal X[j]. COPYRIGHT: (C)2011,JPO&INPIT