Liquid crystal display having a plurality of pixels with switching transistors
AssigneeSony Corporation
InventorsHisao Hayashi, Akio Kawamura
Life of this patent
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Abstract
Two contact holes are formed through an insulating layer at its portion corresponding to a drain of a switching thin film transistor and a height of a wall portion between the two contact holes is selected to be smaller than that of a surrounding insulating layer, whereby the transparent electrode is connected to the drain via the two contact holes with excellent coverage. Thus, a connection between the switching transistor and the transparent pixel electrode in the liquid crystal display device can be effected with improved reliability.
Claims8
A liquid crystal display device composed of a plurality of pixels respectively having switching transistors and aligned in a matrix form, comprising:
- a plurality of contact holes through which a transparent pixel electrode of each of said pixels is connected to each of said switching transistors.
A liquid crystal display device comprising:
- a first substrate having an electrode on the inner surface thereof;
- a second substrate opposed to the first substrate and having an array of pixels, each pixel comprising a transparent pixel electrode, and a switching transistor electrically connected to the transparent pixel electrode by means of at least two contact holes;
- signal lines associated with columns of the pixels in the matrix;
- and
- address lines associated with rows of the pixels in the matrix;
- and
- a liquid crystal layer sandwiched between the first and second substrates.
Dependencies are inferred from the claim text.