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Systems and methods for memory circuitry in an electronic display

專(zhuān)利號(hào)
US10867548B2
公開(kāi)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(lèi)
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(shuō)明書(shū)

At the beginning of an emission process, for example, the emission process as described in FIG. 14, the row driver 60 may enable a precharge control signal (Precharge) 416 as a way to initially enable light emission based at least in part on activation of an emission transistor (MEM) 419. The MEM 419 may activate in response to the row driver 60 enabling of an emission control signal (Emit_en) 420. In some embodiments, the row driver 60 may enable the Precharge signal 416 at the same time as the Emit_en signal 420 to permit the Vreference signal 246 to transmit to a MS 226 to precharge, or boost, the anode of the LED 230 prior to an activation of the MSEL 410. After precharging completes and during the emission process, the Emit_en signal 420 may continue to be enabled by the row driver 60. While row driver 60 disables the Precharge signal 416 after precharging to cause the stored DATA 412 to at least in part control activation of the MEM 419. In this way, stored DATA 412 transmitting from the inverter pair 408 may cause the MEM 419 to activate in response to a logical value of the stored value (e.g., “1” or “0”). It is noted that in some embodiments, the logical high value is equal to the Vreference signal 246, and the logical low value is equal to a Vreference signal 248.

權(quán)利要求

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