Lg Electronics Inc.

Lg Philips Lcd Co., Inc.

Seon Gyoung Kim

Chul Han Park

Sung Woo Noh

Jong Weon Moon

Young Wan Kwon

A hologram diffuser for a liquid crystal display wherein a resin layer with a desired thickness is formed on an upper substrate. A hologram pattern is formed in the resin layer using a hologram plate. A smoothing film with a desired thickness is formed on the hologram layer provided with the hologram pattern. Accordingly, it is possible to assure a wide visual angle and realize a high picture quality.

Method of fabricating hologram diffuser for liquid crystal display and liquid crystal display device using the same

A hologram diffuser for a liquid crystal display wherein a resin layer with a desired thickness is formed on an upper substrate. A hologram pattern is formed in the resin layer using a hologram plate. A smoothing layer with a desired thickness is formed on the hologram layer provided with the hologram pattern. Accordingly, it is possible to assure a wide visual angle and realize a high picture quality.

Device for reducing a jitter in an optical disc, is disclosed, including a DVD formatter for providing a DVD format signal according to a DVD source signal, a pulse width adjuster for separating the DVD format signal from the DVD formatter into signals of frequencies each being a certain times of a basic clock, comparing the signals to a reference voltage, and adjusting a pulse width of each of the signals according to results of the comparisons, a DVD signal extractor for adding the signals each having the pulse width adjusted in the pulse width adjuster in extracting a pulse width adjusted DVD signal, and amplifying the pulse width adjusted DVD signal, and a laser beam recorder for directing a laser beam onto a DVD according to the DVD signal extracted and amplified in the DVD signal extractor to form pits corresponding to the frequency of the certain times in the DVD, and a method for reducing a jitter in an optical disc, whereby facilitating individual adjustments of pulse widths of DVD format signals from the DVD formatter according to a reference voltage from the comparator, allowing elimination of asymmetry that reduces a jitter occurred in molding an optical disc.

Growing community of inventors

Sungnam-shi, South Korea

Seon Gyoung Kim