Display apparatus
AssigneeSeiko Epson Corporation
InventorTokuroh Ozawa
Life of this patent
Estimating the term…
Abstract
For the purpose of providing a display apparatus capable of improving display quality by expanding the light-emission area of pixels by improving the layout of pixels and common power-feed lines formed on a substrate, pixels (7A, 7B) including a light-emission element (40), such as an electroluminescence element or an LED element, are arranged on both sides of common power-feed lines (com) so that the number of common power-feed lines (com) is reduced. Further, the polarity of a driving current flowing between the pixels (7A, 7B) and the light-emission element (40) is inverted so that the amount of current flowing through the common power-supply lines “com” is reduced.
Claims13
A display apparatus comprising on a substrate:
- a plurality of scanning lines;
- a plurality of data lines extending in a direction intersecting the extension direction of the scanning lines;
- a plurality of common power-feed lines parallel to the data lines;
- and
- pixels formed in a matrix by said data lines and said scanning lines,
- each of the pixels comprising:
- a first thin-film transistor in which a scanning signal is supplied to its first gate electrode via said scanning lines;
- a holding capacitor for holding an image signal supplied from said data lines via the first thin-film transistor;
- and
- a second thin-film transistor in which said image signal held by the holding capacitor is supplied to its second gate electrode;
- and
- a light-emission element having an organic semiconductor film, which emits light by a driving current that flows between a pixel electrode and a counter electrode when said pixel electrode is electrically connected to said common power-feed lines via said second thin-film transistor in a section between layers of said pixel electrode formed for each of said pixels and said counter electrode opposing the pixel electrode,
- wherein pixels in which said driving current is passed in the section between the pixels and the common power-feed line are arranged on both sides of said common power-feed line, and said data lines pass on a side opposite to said common power-feed line with respect to the pixels.
Dependencies are inferred from the claim text.