The present disclosure provides a bottom electrode substrate for a segment-type electrophoretic display. of an organic light emitting diode at the time of being used as a hole-injecting layer, a preparation method thereof, and an organic light emitting diode using the same. The embodiments are especially useful in electronic displays which are subjected to cold or warm temperatures and displays which are placed in very bright environments. The alarm signal is then fed back into a system controller so that an operator can be alerted andor the processing system can be shut down. The first EN detects a trigger event for triggering a transition from the first FC to a second FC. The layout apparatus adjusts the sizes of the areas corresponding to the respective contents on condition of the determined sizes so that the areas respectively corresponding to a plurality of contents do not overlap.