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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

Thus, for an example of two reorderings, the row driver 60 may operate in four different operational modes for stored DATA 412 having six bits. For the first operational mode (e.g., corresponds to a first quarter of gray level values between zero and the gray level threshold, 16), the row driver 60 may reset the S node, precharge (e.g., enable Precharge signal 416), enable Sel[6] 415 and enable SET signal 602, precharge, enable Sel[5] 415 and enable SET signal 602, precharge, and enable the Sel[n] 415 (e.g., for a first iteration, n=0, Sel[0] 415A is enabled) in addition to the SET signal for each bit of DATA 412, incrementing the value of n from zero each iteration until reaching DATA[4] 412. For the second operational mode (e.g., corresponds to a second quarter of gray level values between gray level threshold, 16, and two times the gray level threshold, 32), the row driver 60 may reset the S node, precharge, enable Sel[6] 415B and enable SET signal 602, precharge, enable Sel[5] 415, and enable the Sel[n] 415 in addition to the SET signal for each bit of DATA 412, incrementing the value of n from zero each iteration until reaching DATA[4] 412. For the third operational mode (e.g., corresponds to a third quarter of gray level values between two times the gray level threshold, 32, and three times the gray level threshold, 48), the row driver 60 may reset the S node, precharge, enable Sel[6] 415B, enable Sel[5] 415 and enable SET signal 602, precharge, enable Sel[6] 415B, and enable the Sel[n] 415 in addition to the SET signal for each bit of DATA 412, incrementing the value of n from zero each iteration until reaching DATA[4] 412. For the fourth operational mode (e.g., corresponds to a fourth quarter of gray level values between three times gray level threshold, 48, and four times the gray level threshold, 64), the row driver 60 may reset the S node, precharge, enable Sel[6] 415B, enable Sel[5] 415, and enable the Sel[n] 415 in addition to the SET signal for each bit of DATA 412, incrementing the value of n from zero each iteration until reaching DATA[4] 412.

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