A reflective display device is disclosed, which includes first and second substrates facing each other, each of which includes a display area and a reflective area; a display element provided in the display area; and a reflective control element provided in the reflective area, controlling reflectance of externally incident light. The reflective display device may improve a contrast ratio by controlling reflectance of a reflective area when an image is displayed.

The present disclosure provides a display screen and a display device. The display screen includes an electrochromic layer located in a blind via area. The electrochromic layer includes a first electrode layer, an electrochromic material layer, and a second electrode layer stacked in sequence. By means of the display screen and the display device of the present disclosure, the blind via area and an under-screen camera can be shielded when a photographing function is disabled, so that the appearance is sightlier, the privacy is protected, and the lighting of the under-screen camera is not affected when the photographing function is enabled.

Provided are a spatial light modulator (SLM) and a method of fabricating the same. The complex spatial light modulator includes a thin film transistor (TFT) layer provided on a substrate, an amplitude type SLM and a phase type SLM electrically connected to the TFT layer, and a first polarizer provided on the phase type SLM, wherein the TFT layer includes transistors electrically connected to the amplitude type SLM and the phase type SLM, respectively, and the amplitude type SLM and the phase type SLM are commonly and electrically connected to the TFT layer and driven.

An electrochromic device is provided. The device includes a substrate and an electrochromic stack on the substrate. The stack includes a first set of bus bars, a first transparent conductive layer, at least one electrochromic layer, a second transparent conductive layer, and a second set of bus bars, wherein at least one of the first transparent conductive layer or the second transparent conductive layer includes resistivity that varies by horizontal location according to a resistivity profile. In some embodiments the resistivity profile has a vertical component that may or may not be in addition to the horizontal component. Various embodiments of these materials can be tuned as to profiles of vertical resistance and horizontal sheet resistance.

Provided is an electrochromic display device, including: a pair of electrodes facing each other; an electrochromic layer provided to one of the pair of electrodes: and an electrolytic solution layer provided between the electrodes facing each other, wherein the electrochromic display device includes an yttrium-containing metal oxide layer between the electrochromic layer and the electrode to which the electrochromic layer is provided.

The present invention discloses a substrate for a liquid crystal display panel, the liquid crystal display panel and a display device. The substrate comprises: a base substrate; a color layer disposed on the base substrate; and first and second transparent electrodes disposed on opposite sides of the color filter layer and electrically connected with the color filter layer. A color of the color filter layer can be changed based on gray scale of an image to be displayed on the liquid crystal display panel by applying a voltage signal to the color filter layer through the first and second transparent electrodes, thereby a light leakage in a dark state of the liquid crystal display panel is avoided, and thus it is possible to improve contrast of the liquid crystal display panel.

An optical sensor includes a light source emitting signal light, a light sensing element on an optical path of the signal light, and a photoelectric conversion element on a side of the light sensing element away from the light source. The light sensing element is used to receive ambient light and the signal light on one side and transmit an incident light on another side, wherein a transmittance of the light sensing element changes according to an intensity of the ambient light to adjust an intensity of the incident light transmitted from the light sensing element. The photoelectric conversion element is configured to receive the incident light transmitted from the light sensing element, and to output a voltage modulation signal according to the incident light. A glasses is also provided.

A method for controlling an electrochromic device is provided. The method includes applying a constant supply current to the electrochromic device and determining an amount of charge transferred to the electrochromic device, as a function of time and current supplied to the electrochromic device. The method includes ceasing the applying the constant supply current, responsive to a sense voltage reaching a sense voltage limit and applying one of a variable voltage or a variable current to the electrochromic device to maintain the sense voltage at the sense voltage limit, responsive to the sense voltage reaching the sense voltage limit. The method includes terminating the applying the variable voltage or the variable current to the electrochromic device, responsive to the determined amount of charge reaching a target amount of charge.

A display panel, a fabricating method thereof, and a display device are disclosed, which relate to the field of display technology. The display panel comprises an array substrate, an assembly substrate, and a liquid crystal layer arranged between the array substrate and the assembly substrate. The display panel has a totally transmissive mode and a totally reflective mode. An electrochromic reflective layer is arranged on a side of the array substrate close to the liquid crystal layer, and is configured to reflect external ambient light in the totally reflective mode and to exhibit a transparent state to completely transmit light in the totally transmissive mode.

A distributed device control system is provided. The system includes a plurality of windows, each window of the plurality of windows having at least one electrochromic window, a voltage or current driver for the at least one electrochromic window, and a first control system local to the window. The system includes a plurality of window controllers, each window controller configured to couple to one or more of the plurality of windows and having a second control system, for the one or more of the plurality of windows, local to the window controller. The system includes a command and communication device configured to couple to each of the plurality of window controllers, configured to couple to a network, and having a third control system, for the plurality of windows, wherein control of the plurality of windows is distributed across the plurality of windows, the plurality of window controllers, the command and communication device, and a portion of the network.