Thin-film-transistor array substrate and forming method thereof

Abstract

The invention relates to a thin-film-transistor array substrate and a forming method thereof. The array substrate comprises an insulating base, a first metal layer, a grid insulting layer, a noncrystalline silicon layer, a first conducting transparent material layer, a doped noncrystalline silicon layer, a second metal layer, a passivated layer and a second conducting transparent material layer, wherein the first metal layer is positioned above the insulating base, and a first part of the first metal layer forms a TFT grid which is electrically connected with a scanning line; the grid insulating layer is covered above the first metal layer and the insulating base; the noncrystalline silicon layer and the first conducting transparent material layer are both positioned above the grid insulating layer; the doped noncrystalline silicon layer is positioned above the noncrystalline silicon layer and forms a TFT semiconductor layer together with the noncrystalline silicon layer; the second metal layer is positioned above the doped noncrystalline silicon layer and the first conducting transparent material layer, a first part of the second metal layer forms a source electrode and a drain electrode of the TFT, and the source electrode is electrically connected with a data wire; the passivated layer is positioned above the second metal layer and is used as an insulator; the second conducting transparent material layer is positioned above the passivated layer, and a first part of the second conducting transparent material layer forms a pixel electrode connected with the drain electrode; and the first conducting transparent material layer forms part of a common electrode.

Description

technical field [0001] The invention relates to a thin film transistor liquid crystal display, in particular to a thin film transistor array substrate in the thin film transistor liquid crystal display and a forming method thereof. Background technique [0002] Thin film transistor liquid crystal display (TFT-LCD) has the characteristics of lightness, thinness and small size, plus its advantages of low power consumption, no radiation and relatively low manufacturing cost, and currently occupies a dominant position in the field of flat panel display. TFT-LCD is very suitable for use in desktop computers, palmtop computers, personal digital assistants (PDAs), portable phones, televisions and various office automation and audio-visual equipment. The liquid crystal panel is the main component of TFT-LCD, and generally includes a thin film transistor array substrate (also called an array substrate), a color filter substrate, and a liquid crystal layer sandwiched between the thin ...

AI Technical Summary

Problems solved by technology

Although this matrix-type common electrode line improves signal uniformity, the aperture ratio of the pixel is reduced because the common electrode line 109 is an opaque metal layer.

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