| 摘要 |
A circuit board including high-performance thin film transistors whose characteristics are hardly varied thereamong in a monolithic circuit, and a display device including the circuit board are provided. The circuit board includes a monolithic circuit including a thin film transistor on a substrate, wherein the thin film transistor includes a semiconductor layer, a gate insulating film, and a gate electrode, stacked in this order, a portion where the gate electrode overlaps with the semiconductor layer has an area of 40 .mu.m.sup.2 or less, and the gate electrode has a thickness of 300 nm or less. |
