A display that is readable under direct sunlight comprises a half organic
light emitting diode structure and a half reflective liquid crystal
display structure. It uses a thin film transistor as a switch to solve the
problem of crosstalk between the organic light emitting diode mode and the
liquid crystal mode as well as the dc residual problem and has the
advantages of both display structures. The data signals in organic light
emitting diode mode and liquid crystal mode are controlled by different
control systems. By properly selecting liquid crystal material and organic
light emitting diode material such that the ranges of the data signals are
similar, one data driver can be shared between the two modes.
