Recently, micro cavity is studied to reduce the optical loss of BLU and OLED. In this paper, we suggest applying micro cavity to photo-luminescent lamp with plasma discharge technology to meet the display applications for a BLU for LCD. The structure of photo-luminescent lamp consists of SUS foil and ITO glass with micro cavity. The op to-elect riccharacteristics of photo-luminescent lamp with micro cavity was evaluated. The brightness of photo-luminescent device was increased over 111 ccVm2 with the adaptation of patterned micro cavity at 30 pm. The 3D optical simulation verified the enhanced light out coupling when micro cavity applied to the device.
Top-emission device has a merit of high aperture ratio and narrow emission spectrum compared to that of bottom-emission one. Emission spectra of top-emission organic light-emitting diodes depending on a layer thickness and view angle were analyzed using a theory of microcavity. Device structure was manufactured to be Al (100 nm)/TPD/Alq3/LiF (0.5 nm)/Al (2 nm)/Ag (30 nm). N,N`-diphenyl-N,N`- di (m-tolyl)-benzidine (TPD) and tris (8-hydroxyquinoline) aluminium (Alq3) were used as a hole-transport layer and emission layer, respectively. And a thickness of TPD and Alq3 layer was varied in a range of 40 nm~70 nm and 60 nm~110 nm, respectively. Angle-dependent emission spectrum out of the device was measured with a device fixed on a rotating plate. Since the top-emission device has a property of microcavity, it was observed that the emission spectrum shift to a longer wavelength region as the organic layer thickness increases, and to a shorter wavelength region as the view angle increases. Layer thickness and view-angle dependent emission spectra of the device were analyzed in terms of microcavity theory. A reflectivity of semitransparent cathode and optical path length were deduced.
Wave Power Generation by Piezoelectric Sensor Attached to a Coastal Structure Kyu-Han Kim, Si-Bum Cho, Hyun-Dong Kim, Kyu-Tae Shim Journal of Sensors.2018; 2018: 1. CrossRef
Provisioning the standard method for ensuring the reliability of indoor air quality measurements in public transportation Ho-Hyun Kim, Ho-Hyeong Yang, Jeong-Hun Lee, Sang-Hyeon Kang, Tae-Hyun Kim, Sung-Lyul Kim Journal of Odor and Indoor Environment.2020; 19(1): 47. CrossRef
A Study on the Enhancement of Cooling Efficiency for the Cabinet of Automatic Controller in the Interior of Industrial Building Soon-Ho Kim, Hyun-Jung Park Journal of the Korea Society For Power System Engineering.2013; 17(6): 79. CrossRef
First
Prev
