Organic layer removal in displays having transparent openings

Abstract

An electronic device may include a display and a sensor formed underneath the display. The display may have both a full pixel density region and a pixel removal region with a plurality of high-transmittance areas that overlap the sensor. The display pixels may include a cathode. In the high-transmittance areas, the cathode may be selectively removed to form openings that increase transmittance through the display to the underlying sensor. One or more organic layers such as a pixel definition layer and planarization layers may be formed underneath the cathode. In regions under the cathode openings, increased ultraviolet light exposure may cause increased outgassing in the organic layers present. The increased outgassing levels may reduce the brightness of the pixels (particularly at the edges of the pixels). To mitigate display artifacts caused by outgassing, one or more organic layers under each cathode opening may be at least partially removed.