A digital driving method for active micro-led display roller shutter display
A digital drive and display technology, applied to static indicators, instruments, etc., can solve the problems of inability to achieve stable grayscale and wide-range brightness adjustment, so as to improve stability, increase display frame rate, and stabilize grayscale display Effect
Active Publication Date: 2021-09-21
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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Problems solved by technology
[0009] The purpose of the present invention is to solve the problem that the existing Micro-LED drive technology cannot achieve stable grayscale and wide range of brightness adjustment, and to invent a low-temperature polysilicon or metal oxide backplane with stable grayscale and wide range of brightness. Adjusted Micro-LED display roller shutter display digital driving method, which includes Micro-LED display digital driving circuit architecture, pixel driving circuit basic structure, data driver architecture, scanning driver architecture, and the working principle, control algorithm and timing of the system
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[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art all fall into the appended claims of the present application to the amendments of various equivalent forms of the present invention limited.
[0031] Such as Figure 1-7 shown.
[0032] Take the design of a digital drive circuit for a monochrome Micro-LED display with a resolution of 1280×1024 as an example. The driving circuit is composed of a timing controller (Tcon), a data driver (Data Driver), a scanning driver (ScanDriver1, Scan Driver2) and a TFT pixel driving circuit. Its framework diagram is as follows figure 1 shown. The Data Driver is implemented on silicon and banded to the LTPS backplane in the form of COG or COF. Sc...
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A digital driving method for rolling shutter display of Micro-LED display screen with stable gray scale and wide-range brightness adjustment, which is characterized in that an active pixel driving circuit and two sets of independent row scanning driving are implemented on low-temperature polysilicon or metal oxide Circuit, set data drive circuit on low temperature polysilicon or metal oxide, combined with timing controller, divide X sub-field scan drive according to bit plane, realize 2 X Level grayscale stable display; through the PWM time modulation technology of "rolling shutter display" mode and segmental change of V LED Amplitude realizes wide-range brightness adjustment of Micro-LED display. The invention can ensure that the LED can still complete accurate gray-scale display control under the condition of low current, realize stable gray-scale display, and improve the stability of the display control system.
Description
technical field [0001] The present invention relates to a display drive technology, especially a Micro-LED display drive control technology, in particular to a low-temperature polysilicon or metal oxide backplane with stable grayscale and wide range of brightness adjustment. Source Micro-LED display roller shutter display digital driving method. Background technique [0002] Micro-LED display is an emerging display technology in recent years, and is considered by the industry to be the ultimate display technology of the next generation after LCD and OLED. Micro-LED display is the miniaturization of LED display. Its single pixel is less than 100 microns, and the size of the display can be from less than 1 inch to hundreds of sizes. It can be applied to AR / VR, projection, helmet display, head-up display and other micro In the field of display, it can be applied to various display occasions such as indoors, vehicles, and outdoors. At the same time, flexible and transparent dis...
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IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0626
Inventor 陈建军杨洪宝张小芸秦昌兵王璐樊卫华张伟窦亮赵红伟
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD