Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation
Patent
1997-06-18
1998-05-26
Arroyo, Teresa M.
Active solid-state devices (e.g., transistors, solid-state diode
Responsive to non-electrical signal
Electromagnetic or particle radiation
257 59, 257 72, 257459, 257749, H01L 3100, H01L 2904, H01L 2348
Patent
active
057570582
ABSTRACT:
A pad for providing an electrical connection to a liquid crystal display (LCD) includes a first indium tin oxide (ITO) layer provided on a surface of an insulative substrate. At least one metal layer is provided on the first ITO layer and a second ITO layer, in turn, is disposed on the metal layer so that the metal layer is effectively embedded in ITO material. The metal layer is thus shielded from humidity effects and the resulting pad has improved conductivity and reduced signal propagation delay. A recessed portion may be provided in a top surface of the pad so that a spherical conductor spreading during a subsequent bonding process is prevented. The metal layer may be fabricated in the same step that the gate layer of a TFT is formed, and the second ITO layer may be formed concurrently with a pixel electrode of the LCD.
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patent: 5289300 (1994-02-01), Yamazaki et al.
patent: 5389812 (1995-02-01), Huber et al.
Arroyo Teresa M.
LG Electronics Inc.
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