A pixel structure and a driving method thereof, a display panel and a display device are provided. The pixel structure includes a pixel electrode, a gate line, a data line, a first thin film transistor and a second thin film transistor. A gate electrode of the first thin film transistor is electrically connected with the gate line, a first electrode of the first thin film transistor is electrically connected with the data line; a gate electrode of the second thin film transistor is electrically connected with a first electrode of the second thin film transistor, the first electrode of the second thin film transistor is electrically connected with the pixel electrode, and a second electrode of the second thin film transistor is electrically connected with a second electrode of the first thin film transistor.

A display panel and a display apparatus are described. In an embodiment, the display panel includes a substrate and a sub-pixel group located at a side of the substrate. In an embodiment, the sub-pixel group includes sub-pixels of at least two different colors and a light-limiting structure. In an embodiment, the sub-pixels share one light-emitting element. In an embodiment, along a direction perpendicular to the substrate, the light-limiting structure overlaps with the light-emitting element and is located at a light exit side of the light-emitting element. In an embodiment, when the display panel displays an image, the sub-pixels in the sub-pixel group are enabled in sequence. In an embodiment, the when one of the sub-pixels is enabled, the light-limiting structure causes light emitted by the light-emitting element to exit only from the enabled sub-pixel.

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.

An organic compound according to one embodiment of the present invention is an organic compound represented by general formula (1). ##STR00001##
Each of X.sub.1 and X.sub.2 is an alkyl group or the like that may have a substituent. Each of R.sub.11 to R.sub.18 is a hydrogen atom, an alkyl group that may have a substituent, or the like. Each of R.sub.21 and R.sub.22 is a hydrogen atom, an alkyl group that may have a substituent, or the like. A.sub.1.sub. and A.sub.2.sub. independently represent a monovalent anion, respectively.

A touch display device with a fingerprint anti-spoofing function and an associated fingerprint anti-spoofing method are provided, where the touch display device may include a touch display panel and a processing circuit. The touch display panel may include a plurality of display units and one or more codebooks, where each of the display units includes a sensor unit, and the one or more codebooks may make the sensor units receive sensing information of an object which is put on the touch display panel. In addition, the processing circuit may obtain the sensing information from the sensor units, and determine whether the object is a real finger based on the sensing information and reference information.

Disclosed is a terminal device. The terminal device includes a first display screen, a second display screen adjacent to the first display screen, and a front-facing camera module disposed under the second display screen. The first display screen is a display screen normally used in the terminal device, and the front-facing camera module is disposed under the second display screen. When the terminal device performs photographing and the front-facing camera module begins working, the second display screen is in a transparent state to implement the function of photographing of the terminal device. When the terminal device does not perform photographing and the front-facing camera module does not work, the second display screen is in a non-transparent state to display the information of the terminal device, thereby achieving the full screen display terminal device without the free-form area, improving a screen-to-body ratio of the terminal device.

In an embodiment, the present disclosure pertains to a packaging label (1) comprising a substrate (10), a display (6) placed above the substrate (10), a control module (4) placed in electrical contact with the display (6) and adapted to control the operation of said display (6), at least one photovoltaic module (2) placed above the substrate (10) and next to the display (6) and predisposed to supply the display (6) and the control module (4); wherein the photovoltaic module (2), the control module (4) and the display (6) are printed on the substrate (10) using a printing ink mixed with dopants.

A liquid crystal display includes: a liquid crystal panel including a liquid crystal layer, a pixel electrode, and a common electrode; and a backlight unit including a light source to provide light to the liquid crystal panel. The pixel electrode includes a longitudinal electrode having a bar shape and extending in a vertical direction; a transverse electrode having a bar shape, crossing the longitudinal electrode, and extending in a horizontal direction; and a branch electrode having a bar shape, extending from the longitudinal or transverse electrode, and including an oblique part extending in an oblique direction. The common electrode overlaps the longitudinal electrode, and a longitudinal opening extending in the vertical direction is defined in the common electrode, and a width of a part of the pixel electrode where the longitudinal and the transverse electrodes cross each other is substantially the same as a width of the transverse electrode.

A display module and a mobile terminal are provided. The display module includes: a screen cover plate, a fingerprint sensitive component, and a display component; the fingerprint sensitive component is arranged between the screen cover plate and the display component; the fingerprint sensitive component includes: an optical fingerprint sensitive layer made of transparent conductive material, a sensitive surface thereof having multiple pixels; the sensitive surface is attached to a surface of the screen cover plate, a attaching surface of the optical fingerprint sensitive layer is attached to a display surface of the display component; when the display component is on, the light emitted passes through the fingerprint sensitive component towards the screen cover plate, and is reflected to the sensitive surface by a finger pressed on the screen cover plate, the fingerprint sensitive component derives a pattern of a fingerprint from the amount of light received by pixels.

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.