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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.:

US 10643511 B1

PDFFull Text
Date of Patent:
May. 05, 2020

Filed:

Sep. 23, 2016

Electronic device display with monitoring circuitry

Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

Rui Zhang, Santa Clara, CA (US);

Mohammad Hajirostam, Cupertino, CA (US);

Hung Sheng Lin, San Jose, CA (US);

Mohammad B. Vahid Far, San Jose, CA (US);

Sang Y. Youn, Cupertino, CA (US);

Zhen Zhang, San Jose, CA (US);

Prashant Mandlik, Sunnyvale, CA (US);

Sun-Il Chang, San Jose, CA (US);

Jie Won Ryu, Sunnyvale, CA (US);

Shengkui Gao, San Jose, CA (US);

Hyunwoo Nho, Palo Alto, CA (US);

Wei H. Yao, Palo Alto, CA (US);

Yafei Bi, Palo Alto, CA (US);

Yun Wang, San Jose, CA (US);

Assignee:

Apple Inc., Cupertino, CA (US);

Attorneys:

Treyz Law Group, P.C.

G. Victor Treyz

Matthew R. Williams

Primary Examiner:

Michael J Jansen, II

Int. Cl.
CPC ...
G09G 3/00 (2006.01); G09G 3/20 (2006.01); G01M 5/00 (2006.01); G01L 1/22 (2006.01); H01L 27/32 (2006.01); H01L 51/00 (2006.01); G11C 7/04 (2006.01); G11C 19/28 (2006.01);
U.S. Cl.
CPC ...
G09G 3/006 (2013.01); G01L 1/2281 (2013.01); G01M 5/0033 (2013.01); G01M 5/0083 (2013.01); G09G 3/20 (2013.01); H01L 27/3276 (2013.01); H01L 51/0097 (2013.01); G09G 2300/0426 (2013.01); G09G 2330/12 (2013.01); G09G 2380/02 (2013.01); G11C 7/04 (2013.01); G11C 19/28 (2013.01);
Abstract

An electronic device may have a flexible display such as an organic light-emitting diode display. A strain sensing resistor may be formed on a bent tail portion of the flexible display to gather strain measurements. Resistance measurement circuitry in a display driver integrated circuit may make resistance measurements on the strain sensing resistor and a temperature compensation resistor to measure strain. A crack detection line may be formed from an elongated pair of traces that are coupled at their ends to form a loop. The crack detection line may run along a peripheral edge of the flexible display. Crack detection circuitry may monitor the resistance of the crack detection line to detect cracks. The crack detection circuitry may include switches that adjust the length of the crack detection line and thereby allow resistances to be measured for different segments of the line.

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