Contact between element to be driven and thin film transistor for supplying power to element to be driven
AssigneeSanyo Electric Co., Ltd.
InventorKatsuya Anzai
Life of this patent
Estimating the term…
Abstract
The number of TFT (20), thin film transistors for controlling the supplied power to an element to be driven such as an organic EL element (50) which operates based on the supplied power, provided between the element to be driven and a power supply line VL, is equal to n, where n is an integer greater than or equal to two. The n TFTs (20) and corresponding element to be driven (50) are electrically connected by contact points, the number of which is less than or equal to (n−1). It is possible to improve the reliability as a semiconductor device and a display device, and, at the same time, to secure maximum actual operation region (illumination region for an illuminating element) of the element to be driven.
Claims7
A semiconductor device comprising:
- n (n is an integer equal to or greater than 2) thin film transistors provided between an element to be driven which operates based on supplied power and a power supply line for supplying power to said element to be driven, for controlling, in accordance with a data signal, power supplied to said element to be driven;
- wherein
- the number of contact points for electrically connecting said n thin film transistors and corresponding element to be driven is equal to or less than (n−1).
A semiconductor device comprising:
- n (n is an integer equal to or greater than 2) thin film transistors provided between an element to be driven which operates based on supplied power and a power supply line for supplying power to said element to be driven, for controlling power supplied to said element to be driven;
- and
- a switching thin film transistor connected to a data line, for operating in accordance with a gate signal to capture a data signal from said data line;
- wherein
- each of said n thin film transistors supplies power from said power supply line to said element to be driven, in accordance with said data signal captured by said switching thin film transistor, and
- the number of contact points for electrically connecting said n thin film transistors and corresponding element to be driven is equal to or less than (n−1).
Dependencies are inferred from the claim text.