摘要:
A LCD driver IC includes an operational amplifier configured to remove or reduce an offset voltage level by outputting offset voltages having different polarities according to a state of a clock while going through one frame.
摘要:
An apparatus and method of printing patterns, an ornamental design or a picture on a printing object using a heat transfer or sublimation transfer technology are provided. In the non-contact type direct dye-sublimation printing method, and agent treatment layer is formed in a printing object, and solid sublimation dye is carried in the agent treatment layer by spraying liquid sublimation dye on the agent treatment layer to allow a transfer image to be infiltrated into the agent treatment layer and hardening the liquid sublimation dye infiltrated into the agent treatment layer. The transfer image is printed on the printing object by sublimating the dye carried on the agent treatment layer and infiltrating the sublimated dye into enlarged pores of a texture of the printing object by heating the printing object. The non-contact type direct dye-sublimation printing apparatus can be manufactured in a simple structure and a small size by omitting a pressing plate, a thermostat and other relating parts that are required in a process for depressing an intermediate transfer medium, thereby reducing the facility costs and the initial investing costs and to provide a printing method using such a printing apparatus.
摘要:
A slew rate boost circuit for an output buffer and an output buffer circuit for a source driver having the same are provided. In an output buffer including a pull-up unit providing a buffer output signal in a first level by receiving a buffer input signal and performing pull-up operation and a pull-down unit providing a buffer output signal in a second level having opposite phase from the first level by receiving the buffer input signal and performing pull-down operation, the slew rate boost circuit includes a first comparator generating a first boost signal to boost pull-up operation of the pull-up unit of the output buffer by inputting a first input signal and a second input signal and a second comparator generating a second boost signal to boost pull-down operation of the pull-down unit of the output buffer by inputting the first input signal and the second input signal.
摘要:
Disclosed herein is a friction type retrofitting device for steel tower structures. The retrofitting device includes a coupling part which couples an outer column and an inner column of a post of a steel tower to each other using an angle bracket and a bolt. A slot is formed in a portion of the outer column to which the coupling part is coupled. A friction plate is provided to contact an outer circumferential surface of the slot. Thereby, wind energy transmitted to the steel tower is attenuated by friction between the outer circumferential surface of the slot of the coupling part and the friction plate.
摘要:
A slew rate boost circuit for an output buffer and an output buffer circuit for a source driver having the same are provided. In an output buffer including a pull-up unit providing a buffer output signal in a first level by receiving a buffer input signal and performing pull-up operation and a pull-down unit providing a buffer output signal in a second level having opposite phase from the first level by receiving the buffer input signal and performing pull-down operation, the slew rate boost circuit includes a first comparator generating a first boost signal to boost pull-up operation of the pull-up unit of the output buffer by inputting a first input signal and a second input signal and a second comparator generating a second boost signal to boost pull-down operation of the pull-down unit of the output buffer by inputting the first input signal and the second input signal.
摘要:
A forming method of spacers in a flat panel display is provided. The method includes the steps of preparing a plurality of spacers in a predetermined shape, preparing a substrate on which the spacers are to be attached in the flat panel display, applying a photosensitive adhesive material on an upper surface of the substrate to a predetermined thickness, aligning the spacers on the substrate to attach the spacers by using the photosensitive adhesive material, radiating light onto the substrate from above the substrate to expose portions of the photosensitive adhesive material without the spacers, and removing the exposed portions of the photosensitive adhesive material. Therefore, the spacers are fixed on the substrate by the photosensitive adhesive material located under the spacers. According to the provided method of forming spacers, the spacers are fixed on the substrate by a mounting process using a jig, a temporary exposing process, and a developing process. In this case, the spacers are simultaneously placed on the substrate by the jig so that the spacers can be precisely aligned. The characteristic of the provided method of forming spacers is very effective in mass production of flat panel displays.