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Systems and methods for memory circuitry in an electronic display

專利號(hào)
US10867548B2
公開日期
2020-12-15
申請(qǐng)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

The row driver 60 may precharge a comparator 490 after initializing the memory circuitry 492 (block 524). To precharge the comparator 490, the row driver 60 may enable a precharge signal to cause a voltage to boost the circuitry, thus enabling the sub-pixel 72 to be more responsive to changes in output from the comparator 490. To precharge the comparator 490, the row driver 60 may enable a “Precharge” signal that works in conjunction with an inverse emit_en signal 420 to cause a voltage (e.g., DVDD) to transmit through to the comparator 490 (e.g., the MTCH node of the comparator 490) to boost the circuitry. Although specific circuitry is depicted that operates to precharge the comparator 490 in response to the Precharge signal, it should be appreciated that a variety of valid circuitry arrangements may be used to facilitate precharging the comparator 490.

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