Abstract: Disclosed is a method for preparing an environmentally-friendly high-strength wood composite material, which includes the following steps: S1. pulverizing wood into a wood flour, adding the wood flour to an acid solution to obtain a first mixture, ball milling the first mixture to obtain a ball milled mixture, and filtering the ball milled mixture, to obtain a dually-treated wood flour; S2. adding the dually-treated wood flour to a first alkaline solution, and performing a neutralization reaction, to obtain a second mixture; S3. adding an alkaline solution to the second mixture to remove part of lignin, to obtain a lignin-partially removed wood flour; S4. washing the lignin-partially removed wood flour with anhydrous ethanol and drying, to obtain a dried lignin-partially removed wood flour; S5. subjecting the dried lignin-partially removed wood flour to hot pressing, followed by cooling, to obtain the environmentally-friendly high-strength wood composite material.

Abstract: The present disclosure describes methods of contrast enhancement and dual-cell display apparatus. The method includes receiving an RGB value of each second pixel of a displayed image, and determining a brightness value of each first pixel according to the RGB value of each second pixel. The method also includes determining a local brightness adjustment factor and a global brightness adjustment factor by performing statistics processing for local region brightness values and global image brightness values according to the brightness value of each first pixel; and calculating a brightness drive signal corresponding to the first pixel, according to the brightness value of each first pixel, the local brightness adjustment factor and the global brightness adjustment factor. The brightness drive signal adjusts a transmittance of a corresponding pixel of the first panel. The global brightness adjustment factor adjusts an output brightness value of a corresponding pixel of the first panel.

Abstract: The present disclosure describes methods of contrast enhancement and dual-cell display apparatus. The method includes receiving an RGB value of each second pixel of a displayed image, and determining a brightness value of each first pixel according to the RGB value of each second pixel. The method also includes determining a local brightness adjustment factor and a global brightness adjustment factor by performing statistics processing for local region brightness values and global image brightness values according to the brightness value of each first pixel; and calculating a brightness drive signal corresponding to the first pixel, according to the brightness value of each first pixel, the local brightness adjustment factor and the global brightness adjustment factor. The brightness drive signal adjusts a transmittance of a corresponding pixel of the first panel. The global brightness adjustment factor adjusts an output brightness value of a corresponding pixel of the first panel.