Abstract:
A method of forming an optical sensor includes the following steps. A substrate is provided, and a read-out device is formed on the substrate. a first electrode electrically connected to the read-out device is formed on the substrate. a photosensitive silicon-rich dielectric layer is formed on the first electrode, wherein the photosensitive silicon-rich dielectric layer comprises a plurality of nanocrystalline silicon crystals. A second electrode is formed on the photosensitive silicon-rich dielectric layer.
Abstract:
A photo detector has a sensing TFT (thin film transistor) and a photodiode. The sensing TFT has a gate and a base. The photodiode has an intrinsic semiconductor region electrically connected to the gate and the base of the sensing TFT. The sensing TFT and the photodiode both have a structure comprising low temperature poly-silicon. A display panel contains the photo detector is also disclosed.
Abstract:
A forming method of the present invention includes forming a first patterned conductive layer, which includes a transparent conductive layer and a metal layer stacked together on a substrate, where the first patterned conductive layer functions as gate lines, gate electrodes, common lines and predetermined transparent pixel electrode structures; and forming a second patterned conductive layer on the substrate. The second patterned conductive layer includes data lines and reflective pixel electrodes, and be directly connected to doping regions, such as source regions/drain regions. According to the forming method of the present invention, pixel structures of a transflective liquid crystal display device can be formed through five mask processes. Therefore, the manufacturing process of the transflective liquid crystal display device is effectively simplified, so the product yield is improved and the cost can be reduced.
Abstract:
A thin film transistor (TFT) formed on a transparent substrate is provided. The thin film transistor includes a patterned semiconductor layer, a gate insulating layer disposed on the patterned semiconductor layer, a gate electrode disposed on the gate insulating layer, and a patterned light-absorbing layer. The patterned semiconductor layer includes a channel region, and a source region and a drain region disposed on two opposite sides of the channel region in the pattern semiconductor layer. The patterned light-absorbing layer is disposed between the transparent substrate and the patterned semiconductor layer.
Abstract:
A thin film transistor (TFT) including a substrate, a buffer layer, a patterned poly-silicon layer, a gate dielectric layer, and a number of gate electrodes is provided. The patterned poly-silicon layer is disposed on the buffer layer and the substrate. The patterned poly-silicon layer includes a number of channel regions, at least one heavily doped region, two lightly doped regions, a source region, and a drain region. The heavily doped region connects two adjacent channel regions. The source region connects one of the two outmost channel regions through one of the lightly doped regions. The drain region connects the other outmost channel region through the other lightly doped region. The gate dielectric layer covers the patterned poly-silicon layer. The gate electrodes are disposed on the gate dielectric layer and electrically connected to one another. Each gate is disposed above each channel region and a part of the heavily doped region.
Abstract:
A photo detector is disclosed. The photo detector has a substrate, a semiconductor layer disposed on the substrate, an insulating layer covered on the semiconductor layer, an interlayer dielectric layer covered on the insulating layer, and two electrodes formed on a portion of the interlayer dielectric layer. The semiconductor layer has a first doping region, a second doping region, and an intrinsic region located between the first doping region and the second doping region. The interlayer dielectric layer has at least three holes to expose a portion of the insulating layer, a portion of the first doping region, and the second doping region. The electrodes are connected to the first doping region and the second doping region through two of the holes.
Abstract:
A photo detector has a sensing TFT (thin film transistor) and a photodiode. The sensing TFT has a gate and a base. The photodiode has an intrinsic semiconductor region electrically connected to the gate and the base of the sensing TFT. The sensing TFT and the photodiode both have a structure comprising low temperature poly-silicon. A display panel contains the photo detector is also disclosed.