摘要:
A method of fabricating a thin film transistor by setting the temperature of a heat treatment for crystallizing an active layer which is formed on a substrate at a level not deforming the substrate and activating an impurity layer in a heat treatment method different from that employed for the heat treatment, and a semiconductor device prepared by forming a heat absorption film, a semiconductor film, a gate insulating film, and a gate electrode on a substrate, the heat absorption film being provided within a region substantially corresponding to the semiconductor film.
摘要:
In the display device having the retaining circuit for holding the digital image data at the pixel element, the power voltage supplied to the retaining circuit 110 is set up to be at the minimum level for the retaining circuit to hold the data during the data writing period, but the voltage supplied to the retaining circuit is raised by the voltage booster 95 upon the completion of the data writing. The retaining circuit 110 takes in the digital image signal fed from the drain signal line 61 in response to the signal fed from the gate signal line 51 and holds the digital image signal. Then, the display is carried out according to the signal held by the retaining circuit 110. By this, the erroneous writing of the data to the retaining circuit is prevented. The reduction of the electric power consumption and the high density integration of the pixel elements are also possible.
摘要:
A display apparatus includes display pixels each having a thin film transistor and an EL element formed successively forming over a substrate. The EL element has a cathode electrode connected to the source of the thin film transistor and an anode electrode, and is driven by the thin film transistor. The EL element externally emits light from the reverse side of the substrate. For example, when the cathode electrode is formed the comblike, meshlike, or gridlike pattern on the luminous layer, the light is emitted through the slits of the cathode pattern. The display apparatus is provided that can improve the aperture ratio of a display pixel and can increase the degree of freedom in deciding the size and the drive capability of a TFT element which drives an EL element.
摘要:
A display apparatus includes display pixels each having a thin film transistor and an EL element formed successively forming over a substrate. The EL element has a cathode electrode connected to the source of the thin film transistor and an anode electrode, and is driven by the thin film transistor. The EL element externally emits light from the reverse side of the substrate. For example, when the cathode electrode is formed the comblike, meshlike, or gridlike pattern on the luminous layer, the light is emitted through the slits of the cathode pattern. The display apparatus is provided that can improve the aperture ratio of a display pixel and can increase the degree of freedom in deciding the size and the drive capability of a TFT element which drives an EL element.
摘要:
On a TFT substrate, a TFT using a low-temperature poly silicon thin film as an active layer is formed and a plurality of pixel electrodes are formed over the TFT and its electrode wiring, with an interlayer insulating layer between. In a common electrode formed on an opposite substrate opposite the TFT substrate with a liquid crystal layer between, an alignment controlling window for the liquid crystal is formed at a predetermined position opposite each of the pixel electrodes. A wide viewing angle is achieved by dividing an alignment area of liquid crystal molecules in one pixel area. The liquid crystal layer is vertically aligned and can be operated at a low driving voltage obtained by a poly silicon TFT by including fluorine liquid crystal molecules having negative dielectric anisotropy and fluorine side chains in the liquid crystal.
摘要:
A semiconductor device includes an insulating layer and an interconnection layer having a conductive layer provided over the insulating layer. The interconnection layer is patterned by photolithography. The device further includes a cap-metal layer, which is deposited on the conductive layer and suppresses reflection of light beams at the time of patterning the interconnection layer. The cap-metal layer has any one of the following structures: a double-layered structure having a titanium nitride layer and a titanium layer located between the titanium nitride layer and the conductive layer; a double-layered structure having a titanium nitride layer and an aluminum-titanium alloy layer located between the titanium nitride layer and the conductive layer; and a single-layered structure consisting essentially of an aluminum-titanium alloy. These design ensure accurate interconnection patterning in the photolithography, and provide improved EM and SM immunities of the interconnection.
摘要:
A liquid crystal display unit is described, which includes a first substrate, a second substrate opposing to the first substrate, pixel driving elements, first and second insulation layers, a planarizing film and a liquid crystal layer. The pixel driving elements are disposed on the first substrate and between the first and second substrates. The first insulation layer is deposited over the first substrate and the pixel driving elements. The planarizing film is formed on the first insulation layer. This planarizing film provides a substantially flat surface over the first substrate to minimize a height of a step present between an area corresponding to each pixel driving element and an area locating adjacent to the pixel driving element on the first substrate. The second insulation layer is formed on the planarizing film. The display electrodes are formed on the second insulation layer and electrically connected to the pixel driving elements, respectively. The liquid crystal layer is located between the first substrate and said second substrate.
摘要:
Disclosed is a semiconductor memory device which has stack type memory cells each comprising one MIS transistor and one MIS capacitor. A first conductive film having a predetermined thickness is arranged to overlay a memory node contact of a memory cell which corresponds to a source or drain region of the MIS transistor. A second conductive film is formed on the surface of the first conductive film to have a predetermined thickness and come in contact with the source or drain region by means of a memory node contact hole formed inside the memory node contact. The first and second conductive films form a capacitor electrode of the MIS capacitor.
摘要:
For obtaining p-Si by irradiating a laser beam to an a-Si layer to polycrystallize, an energy level in a region to be irradiated by the laser beam is set such that a level at the rear area of the region along a scan direction of the laser beam is lower than that at the front area or the center area of the region. The energy level at the front area or the center area of the region is set such that it is substantially equal to or more than the upper limit energy level which maximizes a grain size of the p-Si obtained. Since an energy profile is set as described above, when the laser beam is scanned on the a-Si layer, an irradiated energy of the laser on the region is gradually lowered from the upper limit as the laser beam passes through, which allows the semiconductor layer to be annealed within an optimal energy level during the latter half of the annealing process.
摘要:
An organic EL element with an emissive layer and a second electrode layer is formed on a device glass substrate in an organic EL display device. The second electrode layer covers the emissive layer. An anti-reflection layer for preventing the reflection of light by the second electrode layer is formed on the device glass substrate except the region where the emissive layer is formed. Since this layer prevents the reflection of light by the second electrode layer, only the light from the emissive layer radiates outwards through the device glass substrate, improving the contrast of the organic EL display device.