Patent ID: 8184224
Filing Date: 2012-05-22
Classification: G09G,H01L

Abstract:
1. A display apparatus having a layout, the display apparatus comprising: source and drain semiconductor regions of a first drive transistor physically disposed along a first imaginary line, said drain region of the first drive transistor being electrically connected to a power supply line; source and drain semiconductor regions of a second drive transistor physically disposed along a second imaginary line, said drain region of the second drive transistor being electrically connected to said power supply line, wherein said power supply line extends in a pixel column direction in a plan view of the layout, said first and second imaginary lines being in said pixel column direction; wherein said first and second drive transistors are in geometric symmetry with respect to said power supply line, said power supply line being an axis of said geometrical symmetry; wherein a gate of the first drive transistor is electrically connected to a first correcting circuit, said first correcting circuit being configured to correct variations in the threshold voltage of the first drive transistor; wherein a gate of the second drive transistor is electrically connected to a second correcting circuit, said second correcting circuit being configured to correct variations in the threshold voltage of the second drive transistor.