Abstract: A light-emitting device includes a first electrode, a second electrode facing the first electrode, an interlayer between the first electrode and the second electrode and including a hole transport region and an emission layer, the hole transport region including a first layer including a compound represented by Formula 1 and a second layer, where a thickness of the emission layer is greater than or equal to about 25% of a thickness of the first layer. In addition, an electronic apparatus and an electronic device each including the light-emitting device are also provided.

Abstract: Disclosed is an optical pulse adjusting device including a pulse shaper that receives an input signal generated based on an optical frequency comb (OFC) signal and outputs a spectrum adjustment signal by adjusting an optical spectrum shape of the input signal, an optical amplifier that outputs an optical amplification signal by amplifying the spectrum adjustment signal, an optical spectrum analyzer (OSA) that outputs an information signal by comparing an optical spectrum shape of the optical amplification signal with a target optical spectrum shape, and a control circuit that outputs a comparison signal based on the information signal. The pulse shaper further receives the comparison signal and adjusts the optical spectrum shape of the input signal based on information about a difference between the optical spectrum shape of the optical amplification signal and the target optical spectrum shape, which is included in the comparison signal.

Abstract: An organic electroluminescence device according to an embodiment of the present disclosure includes a first electrode, a second electrode, and an emission layer. The emission layer includes host compounds and dopant compounds. The hot compounds include a first host compound represented by Formula 1, and a second host compound represented by Formula 2, and the dopant compounds include an assistant dopant compound represented by Formula 3, and a light-emitting dopant compound represented by Formula 4: Accordingly, the organic electroluminescence device according to an embodiment may achieve high efficiency and long life.

Abstract: A display device includes: a charge sharing controller to generate the plurality of group switch control signals based on first bits of (K?1)th digital data groups and second bits of digital data groups. The (K?1)th digital data groups correspond to pixel values of a (K?1)th row of the display panel. The Kth data digital groups correspond to pixel values of a Kth row of the display panel. The charge sharing controller is configured to, with respect to each of the plurality of source line groups, activate each of the plurality of group switch control signals to perform the charge sharing in response to the first bits satisfying a first condition, and the first bits and the second bits satisfying a second condition. The first bits and the second bits are not compared to each other to output a count value.

Abstract: Embodiments provide a light-emitting device including a first electrode, a second electrode facing the first electrode, m emitting units between the first electrode and the second electrode, and m-1 charge generation layers between adjacent ones of the m emitting units, wherein m is an integer of 3 or more, and the emitting units include a first emitting unit, a second emitting unit, and a third emitting unit. The first emitting unit includes a first-first host and a first-second host, the second emitting unit includes a second-first host and a second-second host, the third emitting unit includes a third-first host and a third-second host, and T1 values of hosts of at least one of a first emitting unit, a second emitting unit, and a third emitting unit are each smaller than T1 values of hosts of the other emitting units.

Abstract: A light emitting element includes a first electrode, a second electrode, and an emission layer which is disposed between the first electrode and the second electrode and includes a compound represented by Formula 1, thereby exhibiting long service life and high efficiency characteristics.

Abstract: A method and a system for a sign language translation and descriptive video service are disclosed. The method and system enables an easy preparation of video including a descriptive screen and a sign language so that a hearing-impaired person and a visually impaired person can receive a help for using a video media. The method includes extracting a character string in a text form from a caption of an original video; translating the character string in the text form extracted from the caption of the original video to a machine language; matching the character string translated to the machine language with a sign language video in a database; synchronizing the original video with the sign language video, and mixing the original video and the synchronized sign language video; and editing the sign language video with a sign language video editing tool.

Abstract: A method and a system for a sign language translation and descriptive video service are disclosed. The method and system enables an easy preparation of video including a descriptive screen and a sign language so that a hearing-impaired person and a visually impaired person can receive a help for using a video media. The method includes extracting a character string in a text form from a caption of an original video; translating the character string in the text form extracted from the caption of the original video to a machine language; matching the character string translated to the machine language with a sign language video in a database; synchronizing the original video with the sign language video, and mixing the original video and the synchronized sign language video; and editing the sign language video with a sign language video editing tool.