摘要:
Disclosed is a homeotropic alignment liquid crystal film without an alignment layer and a method for preparing the same. More specifically, the present invention relates to a homeotropic alignment liquid crystal film without using a separate alignment layer to induce a homeotropic alignment of the liquid crystal in which a liquid crystal layer has a homeotropic alignment property by coating a polymerizable and reactive liquid crystalline mixture solution including a predetermined surfactant on a plastic substrate whose surface are hydrophilic-treated, and drying and UV irradiating the mixture solution; a method for preparing the same. The homeotropic alignment liquid crystal film prepared according to the present invention may be very useful as a major component of a viewing-angle compensation film and a retardation film, etc. in LCD, and has advantages of simplicity of the manufacturing process, its shortened manufacturing time, its mass production, etc.
摘要:
An optical device and a stereoscopic image display device are provided. The optical device according to one embodiment may be a light-dividing device, for example, a device that can divide incident light into at least two kinds of light having different polarized states. For example, the optical device can be used to realize a stereoscopic image.
摘要:
An optical element and a stereoscopic image display device are provided. The optical element is a light-dividing element, for example, an element that can divide incident light into at least two kinds of light having different polarized states. Therefore, the optical element can be used to realize a stereoscopic image.
摘要:
A plasma display device having a plasma display panel (PDP) including: a plurality of electrodes; a printed circuit board assembly (PBA) to drive the plasma display panel (PDP); and a chassis base including a first surface supporting the plasma display panel (PDP) and a second surface mounted with the printed circuit board assembly (PBA), wherein the PDP includes signal lines and a power line continuously formed on an edge of the PDP, electrode terminals connected to the electrodes the signal lines and the power lines, signal line terminals disposed on one side of the electrode terminals and connected to the signal lines, an alignment mark formed on at least at one side of the signal line terminals, and a power terminal disposed on a side of the alignment mark connected to the power line and supplying power to the PDP.
摘要:
A plasma display panel driver. The driver uses a high side switch of a scan IC to increase a voltage width of an initialization waveform which is applied in the initial operation of the plasma display panel set. Accordingly, the initial screen is stably driven, and a voltage width is increased without additional installation of elements or an increase of a withstanding voltage switches.
摘要:
A method for dividing a frame into a plurality of subfields, and driving them on a plasma display panel having a plurality of first electrodes and second electrodes formed in parallel on a first substrate, and a plurality of third electrodes formed on a second substrate and extending over the first and second electrodes. A first voltage and a second voltage are applied to the first electrode and the second electrode of the discharge cell to be selected from among the discharge cells during an address period of a first subfield with the minimum weight from among the subfields, such that the difference between the first voltage and the second voltage is less than a discharge firing voltage.
摘要:
Disclosed is a reset waveform of a plasma display panel. A rising or falling voltage is applied rapidly enough to cause an intense discharge in a reset interval. The electrodes are then floated to reduce the voltage applied into a discharge space during the discharge to cause a self-quenching of the discharge, thereby precisely controlling wall charges.
摘要:
A method for driving a plasma display device having a plurality of row electrodes and a plurality of discharge cells corresponding to the row electrodes, in which a field is divided into a plurality of subfields, the method including dividing the plurality of row electrodes into at least a first row group and a second row group, dividing the first row group into a plurality of first subgroups, dividing the second row group into a plurality of second subgroups, and address-discharging one of the first subgroups while sustain-discharging a corresponding one of the second subgroups during a predetermined subfield of a first field, wherein at least one row electrode is part of one subgroup in a first field, and the at least one row electrode is part of another subgroup in a second field.
摘要:
In a panel driving method, first and second type sub-fields comprise at least two sub-fields in a unit frame. At least one of the first type sub-fields sequentially includes an addressing period for a first display electrode line group, a display-sustain period for the first display electrode line group, an addressing period for a second display electrode line group, and a display-sustain period for the first and second display electrode line groups. At least one of the second type sub-fields sequentially includes an addressing period for the second display electrode line group, a display-sustain period for the second display electrode line group, an addressing period for the first display electrode line group, and a display-sustain period for the first and second display electrode line groups. Moreover, the display-sustain periods of at least two of sub-fields in the unit frame are equal to each other.
摘要:
A scan electrode drive of an apparatus for driving a plasma display panel includes a switching output circuit, a reset/sustain circuit, an upper scan circuit, a lower scan circuit, a first switching circuit, and a second switching circuit. The switching output circuit includes upper transistors, lower transistors each paired with corresponding upper transistor, and common output lines of the respective upper and lower transistor pairs, and the common output lines are connected to the scan electrode lines, respectively. The reset/sustain circuit outputs the driving signals during the reset period and the display-sustain period. The first switching circuit connects or disconnects the upper common power line of all of the upper transistors of the switching output circuit to or from an output terminal of the reset/sustain circuit. The second switching circuit connects or disconnects the lower common power line of all of the lower transistors of the switching output circuit to or from the output terminal of the reset/sustain circuit.