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Systems and methods for memory circuitry in an electronic display

專利號(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
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

Accordingly, technical effects of the present disclosure include techniques for implementing memory in one or more pixels of an electronic display to improve processing techniques of image data for presentation. The techniques include systems and methods for receiving image data, storing the image data in memory in the pixel, and transmitting the image to a driver circuit to operate a light-emitting element of a pixel to emit light. Furthermore, any suitable pixel circuitry implementing memory-in-pixel techniques may be used to execute different emission schemes including a binary pulse width modulation emission scheme, binary pulse width modulation reordering emission scheme, a single pulse width modulation emission scheme, and a pulse density modulation emission scheme, while still benefiting from decreasing bandwidths used to communicate a same image as without using memory-in-pixel techniques. These pixel circuits enabling the emission schemes may couple to a pixel circuit having a hybrid drive to increase a responsiveness to electrical signals of an LED.

The techniques described herein may be applied and integrated with a variety of display technologies and should not be limited to the specific embodiments depicted and/or described herein. For example, pixels with memory are shown as having a light-emitting diode as a light-modulating device, however, the memory-in-pixels techniques may be generally applied to different pixel circuitry to support a variety of display technologies that use a variety of light-modulating devices. In this way, suitable pixel circuitry supporting light emission via a light-emitting diode, a digital mirror display, an organic light-emitting diode, or circuitry supporting a liquid crystal display, a plasma display, or a dot-matrix display may each have memory in the pixel to achieve at least improvements to data transmission bandwidths and ease of programming the pixels.

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