A display device includes a display panel, a data driving circuit, and a timing controller, wherein the display panel includes a plurality of gate lines to which a scan signal is applied, a plurality of data lines to which a data voltage is applied, a plurality of reference voltage lines to which a reference voltage is applied, and a plurality of subpixels, wherein the data driving circuit senses a voltage on one reference voltage line selected from the plurality of reference voltage lines in a first detecting period and a second detecting period having different voltage detecting paths, and wherein the timing controller controls the data driving circuit, and determining whether or not the reference voltage line is abnormal using a sensing voltage detected from the reference voltage line.

A fault-tolerant active matrix display device for avionics systems includes a panel glass, a set of source signal lines, and a set of gate signal lines. Each of the gate signal lines includes a first gate line end and a second gate line end on opposite sides of the panel glass. A source driver circuit is coupled to at least a portion of the source signal lines. A first gate driver circuit includes a first set of gate driver cells. Each of the gate driver cells of the first gate line driver circuit includes a gate line output connected to one of the set of gate signal lines at the first gate line end thereof. A second gate driver circuit includes a second set of gate driver cells.

Enhanced probe cards, for testing unpackaged semiconductor die including numerous discrete devices (e.g., LEDs), are described. The die includes anodes and cathodes for the LEDs. Via a single touchdown event, the probe card may simultaneously operate each of the LEDs. The LEDs' optical output is measured and the performance of the die is characterized. The probe card includes a conductive first contact and another contact that are fabricated from a conformal sheet or film. Upon the touchdown event, the first contact makes contact with each of the die's anodes and the other contact makes contact with each of the die's cathodes. The vertical and sheet resistance of the contacts are sufficient such that the voltage drop across the vertical dimension of the contacts is approximately an order of magnitude greater than the operating voltage of the LEDs and current-sharing between adjacent LEDs is limited by the sheet resistance.

A display panel is provided. The display panel includes a plurality of signal lines and a testing circuit. The testing circuit includes a plurality of transistors electrically connected to the plurality of signal lines. The plurality of transistors are disposed in at least two groups, and a number of transistors of each group of the at least two groups is less than a total number of the plurality of signal lines. Therefore, the testing circuit of the display panel of the disclosure can reduce the circuit placement space in the horizontal direction.

Disclosed is a portable communication device including a cover window, a display panel including an active area and an inactive area substantially surrounding the active area, the active area including a plurality of pixels and the inactive area including no pixels, a flexible substrate including a first portion connected with the display panel, and a second portion extended from the first portion and bent below a rear surface of the display panel; a display driver integrated circuit (DDI) disposed in the second portion of the flexible substrate, a sensing circuit disposed in the flexible substrate not to be overlapped with the DDI, a plurality of signal lines each electrically connected between the DDI and at least one pixel of the plurality of pixels, and configured to be used to transmit a signal from the DDI to the at least one pixel, and a sensing line disposed in the flexible substrate and the inactive area except the active area and including a first ending portion which is electrically connected with a power line, and a second ending portion which is electrically connected with at least one signal line of the plurality of signal lines via the sensing circuit.

A voltage-programmed display system allows measurement of effects on pixels in a panel that includes both active pixels and reference pixels coupled to a supply line and a programming line. The reference pixels are controlled so that they are not subject to substantial changes due to aging and operating conditions over time. A readout circuit is coupled to the active pixels and the reference pixels for reading at least one of current, voltage or charge from the pixels when they are supplied with known input signals. The readout circuit is subject to changes due to aging and operating conditions over time, but the readout values from the reference pixels are used to adjust the readout values from the active pixels to compensate for the unwanted effects.

A luminance calibration system and method of mobile device display for medical images is provided, and allows a mobile device display to display the medical images complying with grayscale standard display function (GSDF) defined by Digital Imaging and Communications in Medicine (DICOM) under any environmental light sources; for example, the medical images displayed by the mobile device display can meet a Just-Noticeable Difference (JND) defined by DICOM to facilitate medical diagnosis for medical staffs. In addition, the luminance calibration system and method of mobile device display for medical images only adjusts the medical images inside the operating window of the mobile device display, while any image outside the operating window of the mobile device display is reserved; as a result, the luminance calibration system and method of mobile device display for medical images makes the mobile device display to be a medical image screen as well as a regular screen.

A display substrate, a method of manufacturing the display substrate, and a display device are provided. The display substrate includes: a base substrate, a plurality of sub-pixels, a gate driving circuit, a plurality of input contact pads, a plurality of output contact pads and a contact pad insulating layer. Surfaces of the input contact pads away from the base substrate and surfaces of the output contact pads away from the base substrate are exposed from the contact pad insulating layer. The contact pad insulating layer includes a first portion having a first thickness and a second portion having a second thickness smaller than the first thickness. Edges of the input contact pads and edges of the output contact pads are covered by the first portion. The second portion is located in the region between the input contact pads and the output contact pads.

A display device includes: a display panel including a display area including pixels and a non-display area including a dummy pixel; a scan driver which supplies a scan signal to the display panel; a data driver which supplies a data signal to the display panel; and a timing controller which supplies a first control signal for controlling the scan driver and a second control signal for controlling the data driver. The dummy pixel is connected to a bad pixel among the pixels in the display area through a repair line, and a connection of the dummy pixel to the repair line is cut off in an initialization phase in which a voltage of an initialization power source is supplied.

A device includes multiple row power lines and multiple row control lines arranged in rows, where each row control line corresponds to one of the row power lines. The device also includes multiple column power lines arranged in columns. The device further includes multiple unit cells, where each unit cell is coupled to one of the row power lines and one of the row control lines and selectively coupled to one of the column power lines. In addition, the device includes multiple row power switches and multiple column power switches arranged in pairs, where each pair includes one of the row power switches and one of the column power switches. Each pair is configured to selectively (i) connect a corresponding one of the rows and a corresponding one of the columns or (ii) isolate the corresponding one row and the corresponding one column from each other.