DISPLAY DEVICE DRIVE DEVICE, DISPLAY DEVICE, AND DRIVE DEVICE OR DISPLAY DEVICE CHECK METHOD

• Main Authors: TANAKA YOSHITO, KATSU MITSUNORI
• Format: Patent
• Language: English
• Published: 07.06.2007
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; CRYPTOGRAPHY; DECODING; DISPLAY; EDUCATION; ELECTRICITY; PHYSICS; SEALS

A display device drive device includes a signal processing section ( 20 ) for correcting an input digital image signal and outputting a digital corrected signal, an analog signal output section ( 30 ) for outputting an analog image signal to a plurality of image output terminals ( 1 ), a signal switching selection ( 40 ) for successively selecting an analog image signal from the analog signal output section ( 30 ), and a delta/sigma modulator ( 9 ) for delta/sigma-modulating the analog image signal selected by the signal switching section ( 40 ) and feedback-inputs the created 1-bit digital modulated signal to the signal processing section ( 20 ). The signal processing section ( 20 ) successively outputs initial output data Vinit0 to Vinitm to the analog signal output section ( 30 ), receives a modulated signal for the initial output data Vinit0 to Vinitm from the delta/sigma modulator ( 9 ) so as to calculate correction data. Thus, even if irregularities are caused in the non-linear electric characteristic between output terminals in the display drive LSI of ultra-multi-pin output, it is possible to sufficiently correct them with a high accuracy.