Abstract: Provided are an LED pixel unit, a display panel and a display screen. The LED pixel unit includes: micro-LEDs, arranged on a circumferential line with a point A as a center and R as a radius; the micro-LEDs are provided with light-emitting surfaces with a same orientation, emitting lights of the micro-LEDs are capable of rotating around a preset axis by a predetermined angle and then coinciding with each other, and the preset axis passes through the point A and is perpendicular to a plane where the circumferential line is located; and an optical component, arranged to face toward the light-emitting surfaces of the micro-LEDs and have a preset distance with respect to the light-emitting surfaces, and the optical component is configured to receive the emitting lights, and enable the emitting lights to emit from the optical component at a preset light-emitting angle.

Abstract: A virtual payment method and system. A first virtual account is associated with a physical account, and a second virtual account is associated with the physical account. That is, virtual accounts of different accounts are all associated with the physical account. During the payment for flight ticket booking information by means of virtual payment, it is an exchange of a virtual currency between different virtual accounts associated with the same physical account. During the process, balances in virtual accounts that exchange virtual currencies with each other change, but the total amount in the physical account associated with a plurality of different virtual accounts remains unchanged, that is, the actual currency amount in the physical account does not change. The present invention would not he restricted by an implementation measure of the Central Bank.