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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

Referring to FIG. 14, during an emission process, the row driver 60 may return a Vdata signal 242 to DVDD, may continue to disable the CSinitialization signal 243, may continue to disable the CSselect signal 241, may enable the CSimage.data signal 247 for a time period 290, may enable the CSselect signal 280 for a time period 292, and may continue to disable the CSreset signal 235. As is illustrated, the CSselect signal 280 is enabled at the same time as the CSimage.data signal 247, however is disabled earlier than the CSimage.data signal 247. This is because the CSselect signal 280 acts to activate a switching element to provide the boost to an anode of an LED 230 of the sub-pixel 72.

Returning to FIG. 13 to illustrate, a voltage drive switching element (MVD) 285 of the sub-pixel 72 activates in response to the enabling of the CSselect signal 280 causing the voltage drive 272 to activate. In response to the MVD 285 activating, a reference voltage (Vreference) signal 300 transmits to the anode of the LED 230 upon the CSimage.data signal 247 enabling a switching transistor (MS) 302 and the MS 226 for a first transmitted CSimage.data signal 247. This causes the Vreference signal 300 to transmit at the anode of the LED 230 enabling, or “boosting,” a smaller programmed value from the source of the MS 226 to cause emission of light from the LED 230. The boosting may continue for the time period 292, where upon the ending of the time period 292, the row driver 60 disables the CSselect signal 280 causing the deactivating of the MVD 285 and of the MS 302.

權(quán)利要求

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