Abstract: The present disclosure provides a display module and a preparation method thereof, a control method and a control device, as well as a display device. The display module includes a display panel, comprising a fingerprint recognition area; an optical compensation layer on the light exiting side of the display panel, and a via in an area thereof opposite to the fingerprint recognition area; wherein the via is configured to transmit light emitted by the display panel.

Abstract: An array substrate and a method for preparing the same, and a display device and a driving method thereof are provided. The array substrate includes a plurality of sub-pixels arranged in an array and a light source, the array substrate is further provided with an optical fingerprint identification area, and the optical fingerprint identification area includes at least part of the sub-pixels and at least part of the light source.

Abstract: A fingerprint identification device and manufacturing method thereof, and electronic device are disclosed. The fingerprint identification device includes a base film, a detection circuit, and an adhesive layer. The detection circuit is provided at a first side of the base film; the adhesive layer is provided on the first side of the base film, and is provided between the base film and the detection circuit, so as to adhere the detection circuit onto the base film.

Abstract: The present disclosure relates to an adjustment method and device for a gamma circuit. In the gamma correction of the present disclosure, the brightness of the sub-pixel of each color in the white light is determined according to the brightness and color coordinates of the white light and the color coordinates of the sub-pixel of each color, the correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage values of the sub-pixel is established, the target value of the voltage of the sub-pixel of each color is found from the correspondence relationship according to the brightness of the sub-pixel of each color in the white light corresponding to any grayscale, and then the voltages of red, green and blue sub-pixels are adjusted to the target values.

Abstract: The present disclosure provides a brightness adjustment method and device for a display screen, a display screen and a display apparatus, belongs to the field of display technology, and can solve the problem of inaccurate brightness adjustment of a display screen. The brightness adjustment method for a display screen includes: controlling a light sensor to detect an intensity of ambient light in a transition interval after the display screen displays a frame of image; and adjusting brightness of the display screen according to the intensity detected by the light sensor.

Abstract: The present disclosure provides a display module and a preparation method thereof, a control method and a control device, as well as a display device. The display module includes a display panel, comprising a fingerprint recognition area; an optical compensation layer on the light exiting side of the display panel, and a via in an area thereof opposite to the fingerprint recognition area; wherein the via is configured to transmit light emitted by the display panel.

Abstract: An array substrate and a method for preparing the same, and a display device and a driving method thereof are provided. The array substrate includes a plurality of sub-pixels arranged in an array and a light source, the array substrate is further provided with an optical fingerprint identification area, and the optical fingerprint identification area includes at least part of the sub-pixels and at least part of the light source.

Abstract: A fingerprint identification device and manufacturing method thereof, and electronic device are disclosed. The fingerprint identification device includes a base film, a detection circuit, and an adhesive layer. The detection circuit is provided at a first side of the base film; the adhesive layer is provided on the first side of the base film, and is provided between the base film and the detection circuit, so as to adhere the detection circuit onto the base film.

Abstract: The present disclosure relates to an adjustment method and device for a gamma circuit. In the gamma correction of the present disclosure, the brightness of the sub-pixel of each color in the white light is determined according to the brightness and color coordinates of the white light and the color coordinates of the sub-pixel of each color, the correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage values of the sub-pixel is established, the target value of the voltage of the sub-pixel of each color is found from the correspondence relationship according to the brightness of the sub-pixel of each color in the white light corresponding to any grayscale, and then the voltages of red, green and blue sub-pixels are adjusted to the target values.

Abstract: The invention relates to the field of Light emitting device manufacturing technology, and more particularly to a light emitting device and an organic light emitting panel, the invention sets a light extraction layer comprising at least two refractive index layers stacked successively above the array substrate of the display device, and the refractive index of the at least two refractive index layers gradually decreases from the direction close to the array substrate toward the direction away from the array substrate, thereby reducing the wide-angle color shift, optimizing the display effect, and effectively reducing the blue-violet light harmful to human eye that under 435 nm to achieve the effect of protecting eye, through changing the material of the light extraction layer from organic material in traditional technologies to inorganic material.

Abstract: The present disclosure provides an organic electroluminescent device including: a first electrode layer; an organic functional layer, disposed on the first electrode layer; a second electrode layer, disposed on the organic functional layer; and an inorganic layer, disposed on the second electrode layer, wherein the inorganic layer is a titanium dioxide layer or a silicon carbide layer. There also provides a display including the above organic electroluminescent device. The organic electroluminescent device of the present disclosure may effectively suppress blue and violet lights that do harm to human eyes, and prevents human bodies from damages caused by high-energy blue lights. Meanwhile, the inorganic layer may function as a protection on the cover layer and the second electrode layer, so as to prolong the lifetime of the OLED device, and the micro-cavity structures of the inorganic layer and the organic material together may improve the color purity of the OLED device.

Abstract: A multi-bypass pulse tube refrigerator comprising a pressure wave generator, a regenerator, a heat exchanger of cold ends (cold finger), a pulse tube, an orifice means and a reservoir volume, connecting in serial. Matrix material made of material of high heat capacity is packed in the regenerator. Rectifying means are arranged at the ends of the pulse tube. The outlet of the pressure wave generator is connected with the hot end of the regenerator. The connection between the cold ends of the regenerator and the pulse tube forms the heat exchanger of cold ends. The reservoir volume is connected with the hot end of the pulse tube through the orifice means. Resistance means are properly arranged in the pulse tube, so as to for gas to pass through the pulse tube uniformly and smoothly. At least one bypass with a throttling means is provided to connect the regenerator and the pulse tube.