Apple Inc.

Kasra Omid-Zohoor

Marc Joseph DeVincentis

Paolo Sacchetto

Hyunwoo Nho

Yafei Bi

Shengkui Gao

Mohammad Ali Jangda

Sinan Alousi

Chaohao Wang

Ting-Kuo Chang

Hung Sheng Lin

Abbas Jamshidi Roudbari

Jie Won Ryu

Warren S Rieutort-Louis

Mohammad Bagher Vahid Far

Marc Albrecht

Koorosh Aflatooni

Pierre-Yves Emelie

Sean C Chang

Jiayi Jin

Yingying Tang

Yue Jack Chu

Majid Gharghi

Keitaro Yamashita

Mohammad Hajirostam

Youchul Jeong

Jingyu Huang

Chumin Zhao

Sarath Chandrasekhar Venkatesh Kumar

A display device may include rows of pixels that display image data on a display and a circuit. The circuit may receive pixel data value of image data for a pixel in a first row of the rows of pixels, determine a weight factor to apply to the pixel data value based on a position of the first row with respect to the other rows, such that each row is associated with a current-resistance (IR) drop across the display. The weight factor is determined based on a respective IR drop associated with the first row. The circuit may also generate a weighted pixel data value based on the weight factor and the pixel data value and send the weighted pixel data value to a display driver circuit that renders the image data via the display.

Systems and methods for compensating for IR drop across a display

A flat-panel display device and method to compensate for a voltage drop by supply voltage in the flat-panel display.

Display panel voltage drop correction

Systems and methods reduce likelihood of hysteresis that reduces perceived image quality of a subsequent image frame by toggling the display pixels to relax the display pixels by overwriting previous image frame data. During non-emission periods of the pixels, the pixels may be pre-toggled or exercised to improve response time and accuracy of the pixel. Data for pixels being programmed may also be used to pre-toggle other pixels reducing overhead but increasing cross-talk. Since the amount of cross-talk is related to content of the pixels being pre-toggled, a line buffer may be used to store image data for the pixels being pre-toggled. This stored image data may be used to determine how much pre-compensation is to be applied to data for the pixels being programmed. In other words, an amount of compensation applied is based at least in part on the content (e.g., greyscale levels) of the image data.

Pre-compensation for pre-toggling-induced artifacts in electronic displays

Methods and devices useful in discharging an aberrant charge on the VCOM of an electronic display and harvesting energy from the VCOM of the electronic display are provided. By way of example, a method may include supplying an activation signal to an active switching device of an electronic display. The active switching device is configured to discharge an aberrant charge on a common electrode of the electronic display. The method further includes discharging the aberrant charge by way of the active switching device. Discharging the aberrant charge comprises preventing a possible occurrence of image artifacts from becoming apparent on the electronic display.

Devices and methods for discharging or harvesting VCOM charge in electronic displays

Systems and methods for improving display image quality on electronic displays are provided. One embodiment of an electronic display includes display pixels that share a common electrode. Each of the display pixels includes a first conductive path electrically coupled between a pixel electrode and a data line, in which the first conductive path only enables the data line to charge the pixel electrode; and a second conductive path electrically coupled between the pixel electrode and the data line in parallel with the first conductive path, in which the second conductive path enables the data line to discharge the pixel electrode such that discharge rate of the pixel electrode is approximately equal to charge rate of the pixel electrode. Additionally, the embodiment includes a touch pixel that detects occurrence and position of a touch on a screen of the electronic display using the first common electrode.

Pixel charging and discharging rate control systems and methods

An apparatus for on flex desensing, includes a flex circuit including one or more DC traces, and at least one desense filter including a transformer having a primary winding coupled to at least one of the DC traces. Each desense filter includes one or more circuits coupled to a secondary winding of the transformer. Each of the circuits includes a variable capacitor connected in parallel with a resistor, and each desense filter is tunable to filter a desense frequency in a frequency band associated with one or more wireless communication protocols.

On flex circuit desense filter for wireless communications

Growing community of inventors

Sunnyvale, CA, United States of America

Kasra Omid-Zohoor