Patent ID: 7486303

Claim:
A self-emitting display driving circuit for driving signal lines for an R self-emitting element group, a G self-emitting element group, and a B self-emitting element group, respectively, in an active matrix type self-emitting panel, said self-emitting display driving circuit comprising: a control register for setting an amplitude adjustment value and a curve adjustment value for each of said R, G, and B self-emitting element groups, separately; gray-scale voltage generating circuits each for adjusting an amplitude characteristic and a curve characteristic of a gray-scale number vs. gray-scale voltage characteristic curve of a respective one of said R, G, and B self-emitting element groups, separately, based on said amplitude adjustment value and said curve adjustment value for said respective one of said R, G, and B self-emitting element groups and generating gray-scale voltages, said amplitude adjustment value and said curve adjustment value being set by said control register separately; and a decoder circuit for converting display data into gray-scale voltages among said gray-scale voltages generated by said gray-scale voltage generating circuits for said R, G, and B self-emitting element groups; wherein said gray-scale voltages produced by said decoder circuit are output to said signal lines for said R, G, and B self-emitting element groups in said active matrix type self-emitting panel; wherein said gray-scale voltage generating circuits for said R, G, and B self-emitting element groups each include: an amplitude adjustment circuit for adjusting the amplitude voltage (the difference voltage) between gray-scale voltages for maximum and minimum gray-scale numbers based on said amplitude adjustment value for a respective one of said R, G, and B self-emitting element groups, said amplitude adjustment value being set by said control register separately; a curve adjustment circuit for dividing said amplitude voltage obtained from said amplitude adjustment circuit into a plurality of voltages and adjusting them based on said curve adjustment value for said respective one of said R, G, and B self-emitting element groups to produce a plurality of reference gray-scale voltages for intermediate gray-scale numbers, said curve adjustment value being set by said control register separately; and an output circuit for subdividing said plurality of reference gray-scale voltages obtained from said curve adjustment circuit into desired gray-scale voltages; and wherein said output circuit assigns pray-scale numbers to said desired gray-scale voltages such that the number amount of gray-scale numbers between the gray-scale numbers for each two neighboring reference gray-scale voltages decreases with increasing gray-scale voltage.