The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2022
Filed:
Apr. 27, 2018
Apple Inc., Cupertino, CA (US);
Jaein Choi, San Jose, CA (US);
Andrew Lin, Berkeley, CA (US);
Cheuk Chi Lo, Belmont, CA (US);
Chun-Yao Huang, San Jose, CA (US);
Gloria Wong, Mountain View, CA (US);
Hairong Tang, San Jose, CA (US);
Hitoshi Yamamoto, Palo Alto, CA (US);
James E. Pedder, Oxon, GB;
KiBeom Kim, Cupertino, CA (US);
Kwang Ohk Cheon, San Jose, CA (US);
Lei Yuan, San Jose, CA (US);
Michael Slootsky, Santa Clara, CA (US);
Rui Liu, San Jose, CA (US);
Steven E. Molesa, San Jose, CA (US);
Sunggu Kang, San Jose, CA (US);
Wendi Chang, Santa Clara, CA (US);
Chun-Ming Tang, San Jose, CA (US);
Cheng Chen, San Jose, CA (US);
Ivan Knez, San Jose, CA (US);
Enkhamgalan Dorjgotov, Mountain View, CA (US);
Giovanni Carbone, Palo Alto, CA (US);
Graham B. Myhre, San Jose, CA (US);
Jungmin Lee, Santa Clara, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk in a display, the pixel definition layer may disrupt continuity of the OLED layers. The pixel definition layer may have a steep sidewall, a sidewall with an undercut, or a sidewall surface with a plurality of curves to disrupt continuity of the OLED layers. A control gate that is coupled to a bias voltage and covered by gate dielectric may be used to form an organic thin-film transistor that shuts the leakage current channel between adjacent anodes on the display.