| 摘要 |
PROBLEM TO BE SOLVED: To provide a display driver capable of realizing accurate color reproducibility on a more variety of display panels by realizing a function capable of widening adjustment ranges of shoulder portions more than a conventional gamma characteristic adjusting function. SOLUTION: A liquid crystal display comprises: a tap adjustment register 101 for adjusting a gray scale level to a gray scale voltage in intermediate portions close to the end portions of the gamma characteristic; and a partial-voltage-ratio adjustment register 102 for adjusting a ratio of a gray scale voltage among a plurality of gray scale levels in the intermediate portions close to the end portions of the gamma characteristic, in addition to an amplitude adjustment register 103 for adjusting an amplitude of a gamma characteristic which determines a relation between gray scale levels and gray scale voltages or brightness levels on a display panel; a gradient adjustment register 104 for adjusting a gradient of intermediate portions of the gamma characteristic while fixing end portions of the gamma characteristic; and a fine adjustment register 105 for finely adjusting the intermediate portions of the gamma characteristic for each gray scale level. COPYRIGHT: (C)2006,JPO&NCIPI
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