CURRENT CONTROL CIRCUIT DEVICE AND EL DISPLAY DEVICE

• Main Author: KUNO TOMOHIRO
• Format: Patent
• Language: English
• Published: 07.10.2004
• Edition: 7
• Subjects: 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

PROBLEM TO BE SOLVED: To provide a current control circuit device that maintains an output voltage level more stably while deterring a power circuit from increasing in cost and being large-sized, and an EL display device equipped with the current control circuit device. SOLUTION: A controller 1 of the EL display device 13 estimates an actual current consumption value by a load such as an EL display 3 according to data for image display and performs control for supplying a current corresponding to the difference between the estimated current consumption value and a reference current value IS to a circuit ground through a current limiting resistance and a transistor of a current consumption circuit 7 when the estimated current consumption value is smaller than the reference current value IS. COPYRIGHT: (C)2005,JPO&NCIPI