Abstract: An organic light emitting diode including a first compound represented by one of Chemical Formulae 1-A to 1-D and a second compound represented by Chemical Formula 2:

Abstract: Provided is a printed circuit board and a display device having the same. The printed circuit board includes a base substrate including a first outline that extends in a first direction and a second outline facing the first outline, the base substrate having a first area, a second area, and a third area successively defined thereon in the first direction and a pad part disposed on the second area. A central outline of the second outline which overlaps the second area has a stepped shape that gradually decreases in distance between the central outline and the first outline from a first point of the central outline contacting the first area to a second point of the central outline contacting the third area.

Abstract: A liquid crystal display includes a pixel electrode which includes a first subpixel electrode and a second subpixel electrode, a first insulating substrate and a second insulating substrate which faces the first insulating substrate, a common electrode which overlaps the pixel region, where the first subpixel electrode includes a first main unit electrode and a first sub unit electrode which is electrically connected to the first main unit electrode and smaller in area than the first main unit electrode, the second subpixel electrode includes a second main unit electrode, and a first opening part which overlaps the first main unit electrode, a second opening part which overlaps the second main unit electrode, and a third opening part which overlaps the first sub unit electrode and has a different shape from those of the first opening part and the second opening part are defined in the common electrode.

Abstract: A method of driving a display panel includes generating a first driving period having a first driving frequency, generating a second driving period having a second driving frequency, and inserting a compensating frame between the first driving period and the second driving period. A display apparatus includes a display panel configured to display an image, and a display panel driver configured to generate a first driving period having a first driving frequency, to generate a second driving period having a second driving frequency, and to insert a compensating frame between the first driving period and the second driving period.

Abstract: Disclosed are an organic light emitting display device and a method of manufacturing the same, which reduce a loss of light emitted from an organic light emitting device, increase a lifetime of the organic light emitting device, and decrease consumption power of the organic light emitting display device. The organic light emitting display device includes a first electrode disposed on a first substrate, a bank disposed on the first electrode for dividing a plurality of emission parts, an organic light emitting layer disposed on the first electrode and the bank, a second electrode disposed on the organic light emitting layer, and an encapsulation layer disposed on the second electrode. The encapsulation layer fills a space between adjacent banks, and a refractive index of the bank is lower than a refractive index of the organic light emitting layer and a refractive index of the encapsulation layer.

Abstract: There is provided a display device including: a display panel including a display area consisting of a plurality of pixel areas, and a non-display area surrounding the display area; a plurality of power lines formed on the display area to supply a first voltage to the plurality of pixel areas; a first power link line connected to the plurality of first power lines, and formed on the non-display area; and a plurality of drivers connected to the display panel, and including a plurality of output pads and a plurality of first power pads, the plurality of (first) power pads disposed between the plurality of output pads and respectively connected to the plurality of first power link lines.

Abstract: A display device includes: a display panel which displays an image; an intermediate frame on which the display panel is disposed; and a lower frame coupled to the intermediate frame and in which a coupling hole is defined. The intermediate frame defines: a support portion thereof extended facing a lower surface of the display panel, and a coupling portion thereof extending from a lower surface of the support portion and toward the lower frame. The coupling portion of the intermediate frame extends through the coupling hole defined in the lower frame to be attached to a surface of the lower frame.

Abstract: An electroluminescent display device and a method of compensating for electrical characteristics of the electroluminescent display device are disclosed. The electroluminescent display includes a storage memory storing an average current-voltage expression of a display panel and a current value for each pixel, a parameter calculation unit calculating an offset and a gain for each pixel for causing current characteristics for each pixel based on the current value for each pixel to coincide with average current characteristics based on the average current-voltage expression, and a data correction unit correcting input image data to be written to each pixel based on the offset and the gain for each pixel. The average current-voltage expression and the current value for each pixel are obtained through a camera-based sensing process.

Abstract: Provided is a flexible display device. The flexible display device includes a flexible substrate, a plurality of sub-pixels, a plurality of lines, a pad part, an outer pad part, and a plurality of outer lines. The plurality of lines is connected to the plurality of sub-pixels. The pad part is connected to the plurality of lines. The outer pad part is disposed to be spaced from the pad part. The plurality of outer lines is connected to the outer pad part. The flexible substrate is bent in a first bending area where the plurality of lines is disposed, and the flexible substrate is bent in a second bending area where the plurality of outer lines is disposed.

Abstract: A light controlling device and a method for fabricating the same are disclosed, in which liquid crystals and dichroic dyes may uniformly be distributed on a liquid crystal layer, and adhesion between upper and lower substrates may be improved. The light controlling device comprises first and second substrates facing each other; liquid crystal cells arranged between the first substrate and the second substrate, including liquid crystals; and a barrier arranged between the first substrate and the second substrate, partitioning the liquid crystal cells. The barrier includes a first barrier arranged in a first area to have a first pitch and a second barrier arranged in a second area surrounding the first area to have a second pitch.

Abstract: An organic light-emitting display device includes: a substrate, light-emitting elements on the substrate, and a light control layer structure between an anode of each of the light-emitting elements and the substrate, the light control layer structure including at least one pair of an alternately stacked low refractive index layer and high refractive index layer, a lowest high refractive index layer contacting an upper surface of the substrate.

Abstract: The organic light emitting display device according to the exemplary aspect of the present disclosure includes a flexible substrate which includes a first area, a second area, and a bending area between the first area and the second area, and a wiring line on the bending area of the flexible substrate. The wiring line has a plurality of unit patterns having a rhombic shape. In this case, each of plurality of unit patterns shares a part of one side with the adjacent unit pattern. According to the organic light emitting display device according to an exemplary aspect of the present disclosure, a wiring line having a new shape is disposed in the bending area so that a stress which is applied to the wiring line and the protective layer formed in the bending area may be minimized.

Abstract: Provided are an organic light-emitting diode (OLED) and an organic light-emitting device including the same. The OLED includes a first electrode, an organic emissive layer which includes a plurality of convex curves or a plurality of concave curves in a light-emitting region and of which a slope of an inclined plane of an upper region with respect to a horizontal line dividing a height of the plurality of convex curves into halves is greater than a slope of an inclined plane of a lower region thereof, and a second electrode provided on the organic emissive layer. Accordingly, the OLED and the organic light-emitting device including the same are capable of improving current efficiency.

Abstract: An organic light-emitting display device can include a display panel that expresses luminance based on a driving current corresponding to a data voltage and a first power; a control circuit that outputs a first mode control signal for a normal mode and a second mode control signal for a standby mode for lower luminance; and a power source that supplies the first power at a first voltage level, in response to receiving the first mode control signal, and supplies the first power at a second voltage level that is lower than the first voltage level, in response to receiving the second mode control signal.

Abstract: A display device according to an embodiment includes a substrate including a plurality of gate lines and a plurality of data lines crossing the plurality of gate lines, and a sub-pixel array structure including a sub-pixel group corresponding to the substrate. The sub-pixel group includes a first sub-pixel, a second sub-pixel in a column different from the first sub-pixel, and third sub-pixels divided in two rows and in two columns with at least one of the first sub-pixel and the second sub-pixel therebetween, wherein the first sub-pixel is in a first column, the second sub-pixel is in a third column, and the third sub-pixels are in second and fourth columns, and wherein a ratio between numbers of the first, second and third sub-pixels is 1:1:4.

Abstract: Disclosed is a light emitting diode display device for minimizing a screen defect caused by a defect of a light emitting diode device. The light emitting diode display device includes a plurality of subpixels which each include first to Nth (where N is a natural number equal to or greater than two) light emitting diode devices emitting light with the data current and a pixel circuit including first to Nth driving transistors respectively supplying the data current corresponding to a data signal to the first to Nth light emitting diode devices.

Abstract: The present disclosure is provided a display device including a lower substrate, a display area, and a guideline. The display area is disposed on the lower substrate. The guideline includes a guideline disposed in an outer region of the display area. The guideline includes: a first guideline layer disposed on the lower substrate, having separation spaces, and divided into multiple parts; and a second guideline layer disposed on the first guideline layer and divided into multiple parts.

Abstract: A light emitting diode chip and a light emitting diode display apparatus comprising the same, are disclosed in which a screen defect caused by a defect of the light emitting diode chip is minimized. The light emitting diode chip comprises a semiconductor substrate; first and second light emitting diodes provided on the semiconductor substrate in parallel with each other while having first and second pads; a first electrode commonly connected to the first pad of each of the first and second light emitting diodes; and a second electrode commonly connected to the second pad of each of the first and second light emitting diodes, wherein the first and second light emitting diodes are electrically connected to each other in parallel.

Abstract: Disclosed herein is a gate driver. The gate driver included a plurality of stages. The nth stage of the plurality of stages includes a first scan signal output unit configured to output the kth clock as a first scan signal through a first scan signal output node when a voltage of a Q-node is at a high state, and an emission control signal output unit configured to output a gate high voltage (VGH) through an emission control signal output node when a voltage of the first scan signal output node is at the high state and a voltage of an EQ-node is at the high state by an emission control clock (where n and k are positive integers). The emission control signal output unit is electrically connected to the Q-node. The gate driver includes a scan signal output part as well as an emission control signal output part, so that GIPs having the same configuration can be disposed on the left and right sides of a display panel.

Abstract: A substrate for a liquid crystal display device includes: a substrate; and an alignment film on the substrate, the alignment film including an alignment material of a photo alignment material and a conductive particle.