Abstract: A display panel in which a resistance structure is provided on a test pattern to prevent a circuit of the display panel from being damaged by static electricity introduced into the test pattern, and a display apparatus having the same are provided.

Abstract: A dual-line cascade application system for simultaneously supplying electrical power and transmitting data, including a controller, cascade chips connected to the controller, and LED lights connected to the cascade chips. Each cascade chip is provided with a voltage clamp module, an electrical power supply module, a data storage module, a PWM constant current output driving circuit, an R end (Red LED output end), a G end (Green LED output end), a B end (Blue LED output end), a W end (White LED output end), a VCC/DATA end and a GND/DATA end, as well as a data sampling and calibration module, a power line data sampling and transmission module, a chip initial address setting by command module, a module which determines if E-fuse address of the chip is identical to an address of received data, and an E-fuse module which are sequentially connected. A method using the system is also provided.

Abstract: A picture element for a display device includes a first and a second supply connection, a light-emitting semiconductor device arranged between the first and the second supply terminal, and a comparison unit having a first and a second input and an output. The comparison unit is configured to adjust a voltage at the output in dependence on a comparison of a voltage applied to the first input and a voltage applied to the second input. The picture element also includes a supply switch-configured to control a current flow between the first and the second supply terminal via the light-emitting semiconductor device depending on the voltage applied at the output of the comparison unit. The picture element further includes a selection input, a data input, a memory element and a control switch.

Abstract: A display device includes: a display area and a non-display area; a first pixel area and a second pixel area, each provided in the display area; scan lines extending in a first direction and disposed in the first pixel area and the second pixel area; first sub-scan lines extending in a second direction and disposed in the first pixel area, the second direction intersecting the first direction; second sub-scan lines extending in the second direction and disposed in the first pixel area and the second pixel area; and a pad part provided in the non-display area, the pad part being electrically connected to the first sub-scan lines and the second sub-scan lines. The scan lines are electrically connected to at least one of the first sub-scan lines and the second sub-scan lines. The first sub-scan lines do not overlap the second pixel area in a plan view.

Abstract: A display apparatus capable of providing an expanded viewing window includes a light guide plate including an input coupler and an output coupler; and an image providing apparatus facing the input coupler to provide an image to the input coupler. The input coupler may include a plurality of sub input couplers configured to propagate the image provided from the image providing apparatus at different angles in the light guide plate.

Abstract: Provided is a pixel driving circuit operatable in a low-definition mode and a high-definition mode using the same pixel memory, and a display device including the same. The pixel driving circuit may include a driving line configured to connect between an emitter and a positive power source or between the emitter and a negative power source, a first transistor connected in series on the driving line and turned on in response to a pulse width modulation (PWM) signal, a first driving unit and a second driving unit that are connected in series on the driving line and electrically connected in parallel to each other, and a second transistor connected between a reference voltage source, which is connected to apply a reference voltage to the first driving unit and the second driving unit, and the second driving unit and turned on or off in response to a display mode selection signal.

Abstract: A display panel includes a plurality of pixels. Each of the pixels includes a first transistor having a gate electrode connected to a first node and a first electrode to which a high level driving voltage is applied, a light emitting device having an anode electrode connected to a second electrode of the first transistor and a cathode electrode to which a low level driving voltage is applied, a second transistor applying a fixing voltage to the first node based on a first gate signal, a third transistor applying a data voltage to a second node based on the first gate signal, a fourth transistor connecting the second node to an input terminal for the low level driving voltage based on a second gate signal having a phase opposite to a phase of the first gate signal, and a capacitor between the first node and the second node.

Abstract: An electronic device, method, and computer program product provide a flexible display that is configurable when being worn around a wrist of a user to increase a display width area. The electronic device includes a strap having an outer layer presenting the flexible display and an inner support layer attached to an underside of the flexible display. The strap is positionable between an uncoiled position and the coiled position with lateral edges of first and second terminal ends of the strap juxtaposed in abutted alignment. In response to determining the coiled position based on a sensor or a user interface input, a display driver of the electronic device selectively renders display content and presents rendered display content within a coil display area that is two straps wide of terminal ends of the strap in juxtaposed adjacent position.

Abstract: An electronic device such as a head mounted device may have a head-mounted support structure. A portion of the head-mounted support structure may form a transparent housing member through which real-world objects can be viewed from eye boxes. A display system for the head-mounted device may have a display device that provides image light to a waveguide and may have an output coupler that couples the image light out of the waveguide toward the eye box. Peripheral portions of the transparent housing member or other peripheral device structures may be provided with a peripheral display that emits diffuse light into a user's peripheral vision. The peripheral display may use light guide structures, light sources, reflective structures, and other structures that provide transparency to real-world light.

Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a driving circuit, a light-emitting element, a first light-emitting control circuit, a first control circuit, a second control circuit, a third control circuit, a data writing-in circuit and an energy storage circuit. The first control circuit is configured to control to connect the first voltage line and a first end of the light-emitting element under the control of the first control signal; the second control circuit is configured to control to connect the reference voltage line and the second end of the light-emitting element under the control of a second control signal; the third control circuit is configured to control to connect the first end of the energy storage circuit and the control end of the driving circuit under the control of a third control signal.

Abstract: A display device includes a light guide plate; an input grating on a first surface of the light guide plate and configured to generate a diffracted transmission beam; an output grating on the first surface of the light guide plate and spaced apart from the input grating, wherein the output grating is configured to generate a first output beam emitted from the light guide plate; and an optical efficiency enhancement layer on a second surface of the light guide plate and overlapping at least one of the input grating and the output grating in a traveling direction of the input beam, the second surface being opposite to the first surface.

Abstract: A current-selectable light-emitting-diode (LED) display includes pixels distributed in an array of rows and columns. The pixels are grouped in mutually exclusive clusters and cluster controllers are connected to each pixel in a cluster of pixels to control the pixels in the cluster to emit light. Each cluster controller comprises a selectable current source. Each of the selectable current sources can include cluster current sources that are responsive to a current-select signal to enable one or more of the cluster current sources. The pixels can include micro-LEDs and the cluster controller can be disposed between the micro-LEDs. The display can be disposed on a display substrate with signal wires. The signal wires can include separate wire segments that are electrically connected through regeneration circuits that regenerate the signals. The display can be an information display or a backlight.

Abstract: The present disclosure relates to a driver for driving a light emitting unit array of a display device, the driver including: a plurality of driving units, each of the plurality of driving units includes: a driving circuit configured to provide a driving current to a corresponding column of light emitting units in the light emitting unit array according to a pulse width modulation signal, during a turn-on period of a channel switch; a charge path circuit configured to be connected in parallel with the driving circuit, and to be turned on during the turn-on period of the channel switch to form a charge path; and a discharge path circuit configured to be connected in parallel with the driving circuit, and to be turned-on after the channel switch is turned off, to form a discharge path.

Abstract: A display device including a pixel circuit is provided. The pixel circuit includes a first sub-pixel circuit, a second sub-pixel circuit, and a third sub-pixel circuit. The first sub-pixel circuit and the third sub-pixel circuit are separated by the second sub-pixel circuit. The pixel circuit further includes a first data line, a second data line which are separated from each other. A first gate terminal of a first driving transistor of the first sub-pixel circuit is electrically connected to a second gate terminal of a third driving transistor of the second sub-pixel circuit. A first terminal of a switch circuit of the second sub-pixel circuit is electrically connected to the first gate terminal of the first driving transistor of the first sub-pixel circuit. A second terminal of the switch circuit of the second sub-pixel circuit is electrically connected to the second data line.

Abstract: An image display method includes: acquiring a first image; acquiring a captured image obtained by imaging a projection receiving object of projection light; and displaying a setting image including a first region in which the first image is displayed, a second region in which the captured image is displayed, and a third region in which a preview image including at least a part of a deformed image obtained by deforming the first image according to an image of the projection receiving object included in the captured image is displayed.

Abstract: The present invention relates to a method of evaluating a magneto-rheological rotating load device. In a method of evaluating a structural defect of a magneto-rheological rotating load device according to the present invention, the magneto-rheological rotating load device includes a housing, a shaft rotatably installed in the housing, one or more rotary rings connected to the shaft and configured to rotate in conjunction with a rotation of the shaft, a coil part disposed in the housing, and a magneto-rheological fluid with which at least a part in the housing is filled, and the method includes measuring whether a torque value, which is applied when the shaft and the rotary ring rotate, decreases from an initial set value within a predetermined range.

Abstract: A display apparatus includes pixels. Each of the pixels includes a first node controller applying a data voltage to a first node, a second node controller shifting a voltage of a second node from a low level driving voltage to an on pulse voltage, a third node controller applying a reference voltage having an on level to a third node during a first period in one frame and applying the low level driving voltage to the third node during a second period, a driving transistor being on-duty-driven during the first period and off-duty-driven during the second period, and a light emitting device including an anode electrode connected to the second electrode of the driving transistor and a cathode electrode. The light emitting device emits light responsive to a constant current applied from the driving transistor during the first period and does not emit light during the second period.

Abstract: A pixel circuit includes a light emitting element, a driving transistor which applies a driving current to the light emitting element, a write transistor which receives a write gate signal and a data voltage and is connected to a first electrode of the driving transistor, a first compensation transistor which receives a compensation gate signal and is connected to a second electrode of the driving transistor and a first electrode of a second compensation transistor, the second compensation transistor which receives the compensation gate signal, and is connected to the second electrode of the first compensation transistor and a control electrode of the driving transistor, a storage capacitor which receives a first power voltage and is connected to the control electrode of the driving transistor, and a node control transistor which receives the write gate signal and is connected to the second electrode of the first compensation transistor.

Abstract: A display apparatus is provided having a plurality of pixels, which are arranged in M columns and N rows and arranged with a constant row space therebetween. The display apparatus includes a plurality of display modules and a housing configured to support the plurality of display modules. Each of the plurality of display modules includes a plurality of pixel packages each including some pixels of the plurality of pixels, and a plurality of micro pixel controllers each controlling the pixels included in each of the plurality of pixel packages. Each of the micro pixel controllers is disposed in the row space between the plurality of pixels to be long in a horizontal direction that is a row direction.

Abstract: Disclosed is an array substrate including multiple first selection circuits with each including at least two first selection transistors and at least two first anticreeping transistors. Each first selection transistor is connected with one first anticreeping transistor in series. When the first selection transistor is turned on by a first turn-on signal from a first control signal terminal, the first anticreeping transistor is turned on by a second turn-on signal from a second control signal terminal. When the first selection transistor is turned off by a first turn-off signal from the first control signal terminal, the first anticreeping transistor is turned off to make the first selection transistors and the data signal terminal disconnected, by a second turn-off signal from the second control signal terminal. A voltage of the first turn-off signal is greater than a voltage of the second turn-off signal.