A cholesteric liquid crystal composite display device includes a cholesteric liquid crystal reflective display device and a transmissive display device. The transmissive display device is located below the cholesteric liquid crystal reflective display device. When the cholesteric liquid crystal reflective display device is displayed in a transparent state, the light transmittance of the cholesteric liquid crystal reflective display device is higher than that of the cholesteric liquid crystal reflective display device when it is displayed in a dark state through a rated driving mode. Thereby, the display of the cholesteric liquid crystal composite display device is made clearer and the display quality is improved.

An object is to provide: a transparent screen having high transparency in which a hot spot caused by transmitted light can be reduced; and an image display system in which visibility of a screen is excellent and a hot spot is reduced by using the transparent screen. The object is achieved by the transparent screen including: a dot array in which dots obtained by immobilizing a cholesteric liquid crystalline phase are two-dimensionally arranged; and a layer that is obtained by immobilizing a cholesteric liquid crystalline phase.

It is an object to provide a liquid crystal display device which has excellent viewing angle characteristics and higher quality. The present invention has a pixel including a first switch, a second switch, a third switch, a first resistor, a second resistor, a first liquid crystal element, and a second liquid crystal element. A pixel electrode of the first liquid crystal element is electrically connected to a signal line through the first switch. The pixel electrode of the first liquid crystal element is electrically connected to a pixel electrode of the second liquid crystal element through the second switch and the first resistor. The pixel electrode of the second liquid crystal element is electrically connected to a Cs line through the third switch and the second resistor. A common electrode of the first liquid crystal element is electrically connected to a common electrode of the second liquid crystal element.

A dynamic driving method of tri-stable cholesteric liquid crystals is described, and used to switch a planar arrangement stable state, a focal-conic arrangement stable state, and an uniform lying helix arrangement stable state of a cholesteric liquid crystal material by a two-stage selecting step. A switching time among the three stable states driven by a passive matrix method is effectively reduced.

A system for transforming RGB image data having at least 4 bits of data for each RGB color into image data suitable for display on an electro-optic display having pixels, wherein each pixel includes at least three non-white subpixels (of different colors) and a white subpixel.

It is an object to provide a liquid crystal display device which has excellent viewing angle characteristics and higher quality. The present invention has a pixel including a first switch, a second switch, a third switch, a first resistor, a second resistor, a first liquid crystal element, and a second liquid crystal element. A pixel electrode of the first liquid crystal element is electrically connected to a signal line through the first switch. The pixel electrode of the first liquid crystal element is electrically connected to a pixel electrode of the second liquid crystal element through the second switch and the first resistor. The pixel electrode of the second liquid crystal element is electrically connected to a Cs line through the third switch and the second resistor. A common electrode of the first liquid crystal element is electrically connected to a common electrode of the second liquid crystal element.

A backlight unit capable of implementing matrix local dimming using cholesteric liquid crystal and a polarizing portion, and a display apparatus including the backlight unit are provided. A display apparatus may include: a backlight unit; and an image forming unit configured to create an image by performing at least one from among transmitting and blocking light emitted from the backlight unit. The backlight unit may include: a waveguide plate; a cholesteric liquid crystal layer disposed in front of the waveguide plate, and configured to perform at least one from among transmitting and circularly polarizing the light emitted from the waveguide plate, to generate at least one from among transmitted light and circularly polarized light; and a polarizing portion disposed in front of the cholesteric liquid crystal layer, and configured to transmit the transmitted light in a front direction, and to block the circularly polarized light.

Provided are a liquid crystal handwriting panel, a handwriting device, and a method for controlling the same, which relate to the field of display technologies. The liquid crystal handwriting panel includes: a first substrate and a second substrate that are opposite to each other, and a control assembly. By disposing a touch electrode layer in the first substrate, a position of a contact region of an external object and the first substrate is determined. An infrared positioning device is not disposed in the liquid crystal handwriting panel, and a touch electrode layer is disposed in the first substrate to achieve a function of saving or erasing handwriting, such that a thickness of the liquid crystal handwriting panel and weights of borders of the liquid crystal handwriting panel are reduced, and a screen-to-body ratio of the liquid crystal handwriting panel is improved.

A driving method of cholesteric liquid crystal display is provided. A liquid crystal driving unit is used to output row driving voltage to multiple row circuit structures. Sequentially column driving voltage is outputted to multiple column circuit structures in a scanning manner. Scanning a column circuit structure takes one scanning time sequence. When starting the Nth time sequence of pixels to present the image, a ghost elimination voltage is applied to eliminate the image of the Mth time sequence and present it at the image position of the Nth time sequence, where M=N+1 and the ghost elimination voltage is applied at T. By doing so, the phenomenon of ghosts appearing on cholesteric liquid crystal displays can be improved, and the imaging quality of cholesteric liquid crystal displays can be improved.

A display device. The display device comprises: a housing (01) having an outlet (06); a flexible display panel (02) located inside the housing (01). At least a portion of the flexible display panel (02) can be pulled out from the outlet (06), and in a case where the flexible display panel (02) is pulled out, a region located outside the housing (01) is a front end region (02a) of the flexible display panel (02), and a region located inside the housing (01) is a rear end region (02b) of the flexible display panel (02). An extending direction from the front end region (02a) to the rear end region (02b) is a direction from front to rear of the flexible display panel (02). The display device further comprises a detection calculation unit (03) configured to detect and calculate an area of the front end region (02a); and a controller signally connected with the detection calculation unit (03) and the flexible display panel (02), and configured to receive the area of the front end region (02a) output from the detection calculation unit (03) and control only the front end region (02a) displaying images.