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Systems and methods for memory circuitry in an electronic display

專利號
US10867548B2
公開日期
2020-12-15
申請人
Apple Inc.（US CA Cupertino）
發(fā)明人
Tien-Chien Kuo; Kanghoon Jeon; Yingkan Lin; Bilin Wang; Ivan Knez; Stanley Bo-Ting Wang; Chun-Yao Huang
IPC分類
G09G3/32; G09G3/36; G09G3/20; G09G3/3275; G09G3/3258
技術(shù)領(lǐng)域
pixel,driver,emission,bit,circuitry,data,sub,row,memory,image
地域： CA CA Cupertino

摘要

An electronic display may include a memory formed in an active area of the electronic display or formed in integrated circuitry of the electronic display that is outside of the active area. The memory may store a digital data signal indicative of a value within a data range. The electronic display may include a driver disposed in the active area, where the driver may generate one or more analog electrical signals in response to the digital data signal. The electronic display may also include a light-modulating device disposed on the active area, where the light-modulating device may emit light based at least in part on the one or more analog electrical signals.

說明書

Proceeding onto FIG. 16, for comparison, a graph 370 illustrating an example CSimage.data signal 350, a voltage signal 374 corresponding to a voltage at an anode of a LED 230, and a current signal 376 corresponding to a current through the LED 230 for a sub-pixel 72 having a hybrid drive, is shown in FIG. 16. It should be appreciated that the timing diagram is intended to be illustrative and not limiting. For example, while the CSimage.data signal 350 is shown to follow binary pulse width modulation emission scheme, any suitable emission scheme may cause the same improvement to responsiveness as is described below.

In this simulation, similar to the graph 348, a binary pulse width modulation emission scheme was tested by providing an increasingly wider binary pulse as the CSimage.data signal 350. However, unlike the graph 348, the graph 370 shows the current signal 376 to be responsive to changes in the CSimage.data signal 350. This improved responsiveness is due at least in part to the addition of the voltage drive 272 to the sub-pixel 72. Because the voltage drive 272 of the hybrid drive is “boosting” the anode of the LED 230, smaller changes in voltages at the anode of the LED 230 may elicit the same and/or similar responsiveness of the second portion 358 of the graph 348. Thus, the graph 370 shows the benefits and improvements to display technologies provided by at least implementing a hybrid drive in a sub-pixel 72.

權(quán)利要求

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