Abstract: An IoT-based system for measurement of contamination distribution of contaminated groundwater through real-time monitoring of a contamination degree of a contaminated groundwater well for control of a contaminated groundwater purification device and prediction of a purification period based on the measurement result.

Abstract: A display device includes a substrate, a light emitting element layer disposed on the substrate and including a plurality of light emitting areas each including a light emitting element that emits light, an encapsulation layer disposed on the light emitting element layer, and a light control layer disposed on the encapsulation layer, wherein the light control layer includes a light transmitting film that transmits the light and a light blocking film that blocks the light, and the light transmitting film includes, a first light transmitting portion overlapping the light blocking film in a thickness direction of the substrate, and a plurality of second light transmitting portions each surrounded by the light blocking film, and a thickness of the light blocking film is greater than a thickness of the first light transmitting portion.

Abstract: An manufacturing method of a display device may include the following steps: forming a transistor on a substrate; forming an insulating layer on the transistor; forming a conductive layer including silver on the insulating layer; forming a photosensitive member on the conductive layer; forming an electrode of a light-emitting element by etching the conductive layer; performing plasma treatment on a structure that comprises the electrode, the plasma treatment using a gas including a halogen; and removing a product that is resulted from the plasma treatment.

Abstract: An apparatus and methods for controlling broadcast channel access in a video display are provided. The apparatus includes at least one user input unit configured to preset one or more viewable-channel numbers and turn on/off a broadcast channel access mode of the video display, a memory configured to store the preset viewable channel numbers, a controller configured to output a channel selection control signal for selecting only the stored channel numbers when a broadcast channel access mode is turned on, and a channel selector configured for selecting only a required channel out of currently-received broadcast channels according to the channel selection control signal. The apparatus may also include a second user input unit configured to input a required channel number, and a display unit configured to display a video signal of the selected channel.