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Micro-LED display screen roller shutter display digital driving method

A digital drive and display technology, applied to static indicators, instruments, etc., can solve the problems of inability to achieve stable gray scale and wide-range brightness adjustment, so as to improve stability, increase display duty cycle, and increase display frame frequency effect

Active Publication Date: 2021-04-13
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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  • Abstract
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  • Claims
  • Application Information

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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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  • Micro-LED display screen roller shutter display digital driving method

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Embodiment Construction

[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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Abstract

A Micro-LED display screen roller shutter display digital driving method with stable gray scale and wide-range brightness adjustment is characterized in that an active pixel driving circuit and two groups of independent line scanning driving circuits are realized on low-temperature polycrystalline silicon or metal oxide, a data driving circuit is arranged on the low-temperature polycrystalline silicon or metal oxide. In combination with a time sequence controller, X sub-field scanning driving is carried out according to a bit plane, so that 2X-level gray scale stable display is realized; wide-range brightness adjustment of the MicroLED display screen is realized through a PWM time modulation technology in a 'roller shutter display' mode and segmented change of VLED amplitude. According to the invention, the LED can still complete accurate gray scale display control under the condition of small current, stable gray scale display is realized, and the stability of a display control system is improved.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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