Lg Electronics Inc.

Hitachi-lg Data Storage Korea, Inc.

Seungho Kwon

Hongmo Koo

Jaehyuk Lee

Heejung Lee

Jeongchae Youn

Seokil Ko

A method of controlling power in an optical disc apparatus is provided. A method of controlling power in an optical disc apparatus includes: measuring a temperature of an inside of the optical disc apparatus; calculating, based on the measured temperature, a driving value with which a laser diode (LD) outputs target power; and driving the LD with the calculated driving value. The driving value uses a function in which a temperature acts as a variable and may be calculated for a read channel and a write channel in a divided manner. In the read channel, a driving value of read power in a read mode and a driving value of read power in a record mode may be calculated using different functions, and in the write channel, a driving value of at least one segment of record power divided into two or more segments may be calculated using different functions.

Method of controlling power in optical disc apparatus

A display device is disclosed. The display device includes a first substrate, a light emitting unit on the first substrate, a second substrate on the light emitting unit, and a seal member that attaches the first substrate to the second substrate. The light emitting unit includes a first electrode, a light emitting layer, and a second electrode. The seal member includes a straight portion and a curved portion. A radius of curvature of the curved portion lies substantially in a range between 0.2 mm and 2.5 mm.

Display device having sealant and bezel area

Growing community of inventors

Seoul, South Korea

Seungho Kwon