Abstract: A wearable display apparatus includes a control unit, a display unit, a light transmission unit, a semi-transparent photodetector unit and a signal processing unit. The display unit includes multiple light-emitting elements and is controlled by the control unit and outputs an optical image; the light transmission unit delivers the optical image to human eyes; the semi-transparent photodetector unit converts the light reflected from the human eyes to an electrical signal which includes information regarding the health status and gazing direction of the human eyes; the signal processing unit extracts information through analyzing the electrical signal and transmits the information to the control unit; the control unit adjusts an output image of the display unit in real time according to the information; and the light transmission unit and the semi-transparent photodetector unit propagate the external light beams to the human eyes.

Abstract: Provided are a pixel driving circuit, a method for driving the pixel driving circuit, a silicon-based display panel and a display device. The pixel driving circuit is used for driving a light-emitting element to emit light. At an initial stage, a reset circuit provides a reset signal to a third node; a light emission control transistor is in a first on state to transmit the reset signal to a second node; a threshold compensation circuit transmits the reset signal to a first node; and a data write circuit transmits a non-enable level Vofs of a data signal to a second terminal of a first capacitor. At a threshold compensation stage, the threshold compensation circuit provides a threshold voltage of a drive transistor to the first node for compensation.

Abstract: The present disclosure relates to an OLED display panel including a substrate and a plurality of pixels located on the substrate. Each of the plurality of pixels includes a subpixel of a first color and at least two subpixels of different colors, wherein the subpixel of the first color emits light in a longest average wavelength among the other subpixels. The subpixel of the first color is guarded by subpixels of different colors in a manner that to maximize the distance from the subpixel of the first color to an adjacent pixel. Benefiting from these arrangements, color mixing and image blurring originated from optical diffraction effect particularly by long wavelength light are minimized.

Abstract: An OLED panel includes a light emitting substrate and a color filter substrate. The light-emitting substrate includes a multi-layer OLED film emitting white light. The color filter substrate includes a color filter array, a conductive layer that is electrically connected to a wall-shaped elastic conductor that is wearing a metal cap. The two substrates are laminated together in a manner that the metal cap is in direct contact with cathode electrode of the OLED at the site of pixel definition layer. The total resistance of the cathode layer of the OLED is therefore reduced significantly, and voltage-drop on cathode and associated image artifacts are minimized.

Abstract: Provided is an organic light-emitting display panel. Pixel-driving circuits of subpixels in a same row of pixel units are connected to a same light emission control signal line. The pixel-driving circuits of the subpixels in the same row of pixel units are connected to a same reset control signal line; and an anode of a light-emitting element of each of the subpixels to which the pixel-driving circuits electrically connected to the reset control signal line belong is at a reset voltage. In a display period of each frame of image, in at least part of a period during which an i-th row of pixel units are in a light emission stage, anodes of light-emitting elements of a j-th row of pixel units are at a reset voltage; and the j-th row of pixel units and the i-th row of pixel units are adjacent two rows of pixel units.

Abstract: Provided are an overcurrent protection circuit and a display device, where the overcurrent protection circuit includes a drive transistor, an operational amplifier, a buffer, a peak current detector, and a peak current controller; the output terminal of the operational amplifier is connected with the buffer, and the operational amplifier controls the drive transistor through the buffer; the output terminal of the peak current controller is electrically connected with the gate control terminal of the buffer; when the peak current detector does not detect an overload current, the peak current detector controls the operational amplifier to control the gate of the drive transistor; when the peak current detector detects an overload current, the peak current detector controls the peak current controller to control the gate of the drive transistor to maintain the overcurrent protection circuit to work.

Abstract: Provided are a driver chip, a display screen and a display device. The driver chip is configured to drive a silicon-based display screen, and the driver chip is composed of a bridge chip and a screen driver chip. A signal interface circuit of a first signal processing circuit in the bridge chip receives video signals of each frame of picture. A drive controller controls video signals of P pixels among the video signals of one frame of picture to be output at a first preset transmission speed to a second signal processing circuit of the screen driver chip each time. A signal processor of the second signal processing circuit in the screen driver chip converts the video signals of all of the P pixels into data drive signals and outputs at a second preset transmission speed data drive signals of Q pixels in one frame of picture to a data processing circuit each time.

Abstract: A display apparatus includes a substrate, a plurality of pixelated first electrodes disposed on the substrate, an uneven surface structure or a porous structure disposed between adjacent pixelated first electrodes, a plurality of OLED lighting elements disposed on the pixelated first electrodes and the uneven surface structure or the porous structure, a second electrode layer disposed on the OLED lighting elements. Equivalent transport distance of carriers along the uneven or porous surface increases accordingly, thereby resulting in reduced lateral leakage current between adjacent pixelated first electrodes.

Abstract: Provided are a source driving circuit, a display device and a pixel driving method. The source driving circuit includes a voltage isolation circuit, a voltage follower circuit, a first voltage dividing circuit, a second voltage dividing circuit, a first switch circuit, a second switch circuit, a third switch circuit, a fourth switch circuit, a fifth switch circuit, a sixth switch circuit and a current source.

Abstract: A display panel includes: a substrate; a first electrode layer disposed on one side of the substrate; a pixel definition layer with a plurality of opening structures disposed on one side of the first electrode layer facing away from the substrate, where the opening structure exposes part of first electrodes. The barrier control gate is then disposed on the pixel definition layer. The first-type carrier layer, then is the light-emitting layer, the second-type carrier layer, and finally the second electrode layer, are sequentially deposit on the display panel as formed above.

Abstract: An OLED display panel comprises a plurality of concave-convex structures in each sub-pixel, and a light-emitting layer conformal to the concave-convex structure. The number of the concave-convex structures in each pixel varies depending upon the distance from center to peripheral of the OLED display panel, to compensate brightness variations caused by voltage drops and improve white balance of display image.

Abstract: A head-mounted display optical module includes an optical lens group located at a light-emitting display side of the display panel and a protective layer located on an optical path between the display panel and the optical lens group. The protective layer includes at least one first protective layer. A refractive index of the first protective layer continuously changes therein at least along a radial direction that is located in a plane of the first protective layer and points from a center of the first protective layer to an edge of the first protective layer.

Abstract: An OLED display panel comprises a pixel array and a substrate. The pixel array includes a plurality of pixels, each of the pixel includes multiple sub-pixels. Each of the sub-pixels includes multiple layers stacked in processing sequence on the substrate, a driving circuit layer, an uneven surface layer, and a light-emitting layer. The uneven surface layer includes a plurality of concave-convex structures. In each pixel, there are at least two sub-pixels corresponding to different colors respectively, and possessing different numbers of concave-convex structures, respectively. Moreover, those sub-pixels corresponding to a same color in the pixel array possess a same number of concave-convex structures. The light-emitting layer conformal to the concave-convex structures has increased surface area, so that the effective light-emitting area of the display panel is increased and the brightness of the OLED display panel is enhanced accordingly.

Abstract: An OLED display panel includes a substrate and a pixel array on the substrate, each pixel includes a group of subpixels, and each subpixel includes a light-emitting element and a color filter element. Among the color filter elements in the subpixel group, there is a first color filter element which is substantially transparent for light of the longest wavelength. Except a periphery of the pixel array, every M first color filter elements from M adjacent pixels abut against each other to form a seamless color filter block, where M?2.

Abstract: Provided is an OLED display panel fabricated on a hybrid substrate. The hybrid substrate includes a single-crystal silicon substrate and a silicon on insulator (SOI) substrate built on the single-crystal silicon substrate. The display panel includes an OLED pixel array and a row scanning circuit and a data input circuit. The OLED pixel includes SOI switching transistor and SOI driving transistor, fabricated on the SOI substrate. The row scanning circuit and the data input circuit are fabricated on the single crystal silicon substrate. This arrangement allows low voltage driving CMOS circuit and high voltage driving OLED pixels integrated together on one hybrid substrate.

Abstract: A voltage converter comprises a current mirror circuit, a switch circuit, and a bias circuit electrically connected to a substrate of the switch circuit. When an electrical signal provided by the first electrical signal end is greater than an electrical signal provided by the second electrical signal end, the bias circuit is turned on to turn on the switch circuit, thereby an output end of the mirror current circuit outputs the electrical signal provided by the second electrical signal end. Otherwise, the output end of the current mirror circuit outputs the second voltage signal.

Abstract: Provided are a display panel and a display device. The display panel includes a substrate, light-emitting units, a first organic layer, and light extraction structures located between the light-emitting units and the first organic layer. The first light extraction layer has a first central axis and is symmetrical about the first central axis, the second light extraction layer has a second central axis and is symmetrical about the second central axis, and the first central axis and the second central axis are perpendicular to the substrate. A surface of the second light extraction layer connecting the first light extraction layer is a first surface, a surface of the second light extraction layer facing away from the first light extraction layer is a second surface, and at least one of the first surface and the second surface comprises straight lines in a cross-section perpendicular to the substrate.

Abstract: The present disclosure describes a display panel and a circuit to generate a data signal current included thereof. The circuit further comprises a signal voltage module to generate a primary signal voltage and send to a second storage capacitor in a control module to output a data signal voltage. The second storage capacitor is coupled to a first storage capacitor and a gate of a current output transistor, so that the primary signal voltage is stored at the joint node. A threshold voltage of the current output transistor, generated by a voltage compensation module, is then added on to the gate of the current output transistor, so that an output current compensated by the threshold voltage is realized.

Abstract: An organic light-emitting display (OLED) panel includes a substrate and a light-emitting pixel array disposed on the substrate and including a plurality of light-emitting pixels, each of the plurality of light-emitting pixels includes a concave structure, a light-emitting layer, a planarization layer, and a convex microlens which are sequentially stacked up and aligned up on the substrate in such a manner that light emitted in an angle perpendicular to the light-emitting layer on the concave structure pass through an focal point of the convex microlens.

Abstract: A wearable display apparatus comprises a control unit, a display unit, an optical transmission unit and a photoelectric detection unit. The control unit is configured to control the display unit to output a display image, the light transmission unit is configured to transmit a first part of light of the display image to human eyes, and transmit a second part of the light of the display image to the photoelectric detection unit, the photoelectric detection unit is configured to send a feedback signal to the control unit; and the control unit is configured to compensate for a drift of characteristics including brightness and color according to the feedback signal from the photoelectric detection unit.