摘要:
A reflection type liquid crystal display device according to the present invention is constructed to include: a light modulation layer having a light scattering state changed when a voltage is applied between electrode faces; at least one kind of color separation layer arranged at the back of the liquid crystal; and a reflection layer arranged at the back of the color separation layer. The light modulation layer is a polymer network type polymer scattered liquid crystal layer or a phase conversion type liquid crystal layer, and the color separation mirror is a cholesteric liquid crystal polymer layer or a dielectric multi-layered thin film characterized to reflect a light within a predetermined wavelength range in the visible light region selectively. A reflection preventing layer and an ultraviolet ray cut-off layer are further arranged on the surfaces of the electrode faces.
摘要:
A reflection type liquid crystal display device comprises a pair of substrates having electrodes, a light scattering type liquid crystal layer interposed between the substrates, a reflection layer disposed over a rear surface of the light scattering type liquid crystal layer, and a light absorbing layer disposed over a rear surface of the reflection layer for absorbing a light passed through the reflection layer. The light scattering type liquid crystal layer changes into a scattering state or a transparent state in accordance with a change in a voltage level between the electrodes, and transmits 60% or more of incident light irrespective of the change in the voltage level between the electrodes. The reflection layer has a reflectivity within a range of 10 to 50% for reflecting a forward scattered light passed through the light scattering type liquid crystal layer.
摘要:
A reflective type liquid crystal display device has a first transparent substrate, a second transparent substrate, and a light scattering liquid crystal layer disposed between the first and second transparent substrates. A solar cell is disposed on the second transparent substrate. A portion of the solar cell comprises an active element for driving the light scattering liquid crystal layer.
摘要:
A reflective liquid crystal display device comprises a transparent first substrate having formed thereon a transparent electrode, a first filter having a first color, and a second filte having a second color. A second substrate is disposed opposite and spaced-apart from the first substrate. A reflection layer is disposed on the second substrate. A polymer dispersed liquid crystal layer is disposed between the transparent electrode and the reflection layer and is formed by exposure to an ultraviolet ray in a preselected wavelength range. A ratio of a transmissivity of the first filter for the ultraviolet ray to a transmissivity of the second filter for the ultraviolet ray is 3.0 or less.
摘要:
A liquid crystal display panel comprises first and second substrates each having a transparent electrode and an orientation plane, a nematic liquid crystal material disposed between the first and second substrates, a polarizer disposed over the first substrate and the nematic liquid crystal material, and a simplex polymer film comprised of a single optically anisotropic substance disposed between the first substrate and the polarizer. The nematic liquid crystal material has a positive anisotropy of refractive index, a retardation of 0.55 .mu.m to 1.75 .mu.m, and molecules twisted at a high degree with a twist angle of 180.degree. to 270.degree.. The simplex polymer film has a retardation of 20 nm to 200 nm.
摘要:
The liquid crystal display device is comprised of a matrix panel 1, a common driver 2 and a segment driver 3. A liquid crystal layer is interposed between rows of the scanning electrodes 4 and columns of signal electrodes 5. A frame memory 6 stores an inputted dot data each frame. An orthonormal signal generator 7 generates a set of orthonormal signals to sequentially feed the same in a desired combination pattern to the common driver 2 to concurrently drive a multiple of the scanning electrodes 4 to effect group sequential scanning according to the combination pattern. A dot product computation unit 8 executes dot product computation between a set of the dot data and the set of the orthonormal signals, the result of which is fed to the segment driver 3 to drive the columns of the signal electrodes 5. The group sequential scanning is repeated several times within one cycle to display a picture. The orthonormal signals are horizontally or vertically shifted to improve the quality of the displayed picture. Further, the multiple concurrent line number is optimized to balance the withstand voltage between the common driver 2 and the segment driver 3. Moreover, in the gray shading display by pulse-height modulation, a voltage pulse assigned to a virtual line of the scanning electrode is spread out to improve the gray shaded quality of the displayed picture.
摘要:
In order to prevent signal distortion using a multiple line selection driving technique when using pulse width modulation to achieve a half-tone display in a liquid crystal display panel, respective bits of column signals are arranged in a descending pulse width order and a voltage generating circuit is used to lower level differences in adjacent bits. An orthonormal function generating circuit generates a plurality of row signals to drive a group of row electrodes through a vertical driver. A dot product computation circuit computes a dot product of the orthonormal functions and pixel display data to generate a column signal in the above manner. A horizontal driver applies the column signal to a group of column electrodes. Pixel data is stored in a frame memory, each datum being represented by a series of bits corresponding to a gray scale. The dot product computation circuit divides the pixel data into the respective bits, and individually carries out the dot product computation for each bit. The horizontal driver arranges the column signal components in order of descending pulse width. A voltage level circuit lowers the voltage level between the column components to reduce distortion caused by the high switching speed between the components and the low response time of the liquid crystal material.
摘要:
In an EL element including a light emitting layer sandwiched between upper and lower electrodes, of light emitted therefrom, light totally reflected at a light emitting layer interface is not taken out, so there is a problem in that light emission efficiency reduces. Therefore, a light scattering layer in which metal particles are dispersed is provided between an electrode and the light emitting layer. According to such a structure, the light from the light emitting layer can be scattered by the metal particles and taken out, thereby improving the light emission efficiency. When plasmon is excited in the metal particles, light confined in the light emitting layer or each layer adjacent thereto can be used, thereby improving light use efficiency.
摘要:
In an EL element including a light emitting layer sandwiched between upper and lower electrodes, of light emitted therefrom, light totally reflected at a light emitting layer interface is not taken out, so there is a problem in that light emission efficiency reduces. Therefore, a light scattering layer in which metal particles are dispersed is provided between an electrode and the light emitting layer. According to such a structure, the light from the light emitting layer can be scattered by the metal particles and taken out, thereby improving the light emission efficiency. When plasmon is excited in the metal particles, light confined in the light emitting layer or each layer adjacent thereto can be used, thereby improving light use efficiency.
摘要:
A difficulty has been given, that is, in a condition that an electrostatic chuck having an oxide layer as a dielectric layer is set in catalytic chemical vapor deposition apparatus, as a silicon thin film is repeatedly deposited on a workpiece held by the electrostatic chuck, adsorbing power of the electrostatic chuck is gradually decreased, and finally the chuck does not adsorb a substrate at all. Thus, a dielectric layer on a surface of the electrostatic chuck is covered with an insulating film containing silicon nitride or silicon oxide. Thus, since damage to a chuck surface can be prevented, the damage being due to hydrogen radicals generated during depositing the silicon film by the catalytic chemical vapor deposition apparatus, even if the silicon film is repeatedly deposited, power for adsorbing the substrate is not decreased, and consequently substrate temperature is stabilized during depositing the silicon film.