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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

To help provide content, FIG. 26 depicts timing diagram of the binary pulse width modulation emission scheme with two reorderings implemented with the three color channels. This timing diagram shows the relationship between the loading of digital data into the memory 78 that occurs substantially simultaneously to other actions performed by the row driver 60. For example, data loading of the green channel's most significant bits occurs at a time 612 of the emission of the red channel's least significant bit. Comparing FIG. 26 to FIG. 25, just as was described for the fourth quadrant 606D, the row driver 60 permits the sub-pixel 72 to emit light according to the bit-plane represented by data stored in and transmitted from the memory 78. As is indicated on the timing diagram, the total emission period for all three color channels is approximately equal to three time times the channel-specific emission period.

An example embodiment of a pixel operated by a row driver 60 to follow a binary pulse width modulation reordering emission scheme including memory circuitry 560, MWRs 406, MSELs 410, inverter pairs 408, inverter pair 498, a SR latch 562 coupled to analog driver circuitry 561 is shown in FIG. 27. This figure is meant to be example and not limiting, for example, a variety of pixel circuitry and analog driving circuitry may be used in conjunction with memory circuitry 560 and memory-in-pixel techniques. FIG. 27 shows an example of memory circuitry 560 as applied to a digital mirror display (DMD).

權(quán)利要求

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