DN66 - An OLED bias supply

Portable applications such as cell phones are becoming increasingly complex with more and more

• designed into every generation. One popular feature is to replace the STN sub display with an OLED sub display. OLED displays have infinite contrast ratio and are selfilluminating. This gives the handset manufacturer two key advantages, the first is lower power consumption and the second is a slimmer display. One disadvantage with OLED sub displays over LCD sub displays is the higher leakage current when not in use, which is the majority of the time. The way to overcome this issue is to disconne.