Abstract: The present invention relates to a ?LED light-emitting and display device without electrical contact, external carrier injection and mass transfer and a preparation method thereof. The ?LED light-emitting and display device includes one or more light-emitting pixels, and each light-emitting pixel includes a pixel lower electrode, a lower insulation layer, a ?LED chip, an upper insulation layer and a pixel upper electrode from bottom to top, wherein the upper insulation layer and the lower insulation layer prevent the ?LED chip from being in direct electrical contact with the pixel lower electrode and the pixel upper electrode, and the ?LED chip is lit by an alternating electric field through electromagnetic coupling.

Abstract: The disclosure provides a method for treatment of dry eye. The method includes administering a patient in need thereof a P55PIK inhibitor. Also provided is a therapeutic drug for dry eye including a P55PIK inhibitor. The dry eye therapeutic drug is easy to use and has a reliable therapeutic effect.

Abstract: The invention discloses a polypeptide for topical treatment on skin damages resulting from various causes such as burns, wounds or cuts. The polypeptide topical drugs in different dosage forms have good therapeutic effect on scald models and trauma models of animals with little toxic and side effects, and is an innovative drug with good development prospects, and is effective in topical application in treating skin damages resulting from various causes such as burns, wounds or cuts; safe; low toxic and quality controllable.