Micro-LED display equipment and feedback compensation circuit thereof

A feedback compensation and circuit technology, applied to static indicators, instruments, etc., can solve the problems of not being able to guarantee the compensation accuracy and compensation speed of Micro-LED display equipment at the same time, to speed up the establishment speed, ensure the compensation accuracy, and improve the compensation accuracy Effect

Pending Publication Date: 2022-06-28
CENT SOUTH UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a Micro-LED display device and its feedback compensation circuit, which is used to at least solve the problem that the feedback compensation circuit of the above-mentioned Micro-LED display device cannot guarantee the compensation accuracy and compensation speed of the Micro-LED display device at the same time. question

Method used

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  • Micro-LED display equipment and feedback compensation circuit thereof
  • Micro-LED display equipment and feedback compensation circuit thereof
  • Micro-LED display equipment and feedback compensation circuit thereof

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present application, but not all of them. Example. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of this application.

[0028] see figure 1 , figure 1 Shown is a Micro-LED device provided by the present application, including a feedback compensation circuit and a pixel circuit, wherein the external compensation driving circuit is connected to the pixel circuit through a data line and a feedback line, and can send control to the pixel circuit through the data line. signal, and the feedback current that obtains the pixel current through t...

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Abstract

The invention provides Micro-LED display equipment and a feedback compensation circuit thereof, and the feedback compensation circuit comprises a data current generation module, a current detection module, an I-V conversion module, a reference voltage module, a driving signal generation module and a complementary switch module, the current detection module is used for providing a reference voltage for a feedback line in a programming stage so as to accelerate the establishment speed of a feedback current; the I-V conversion module is used for generating a voltage signal according to a difference value between the feedback current and a data current and inputting the voltage signal to the complementary switch module; the reference voltage module is used for providing reference voltage, the driving signal generation module is connected with the complementary switch module, and the complementary switch module is used for providing driving signals for the pixel circuit so as to control the charging process and the discharging process of a driving tube in the pixel circuit. According to the technical scheme, the compensation precision and the compensation speed of the Micro-LED display equipment can be ensured at the same time.

Description

technical field [0001] The invention belongs to the technical field of Micro-LED devices, and in particular relates to a Micro-LED display device and a feedback compensation circuit for Micro-LED display. Background technique [0002] Micro-LED refers to a display device formed by integrating light-emitting diodes (LEDs) with sub-micron size in a high density (above 200 PPI) in the form of an active matrix. Compared with conventional large-size LED devices with an operating current density of about 100Acm-2, Micro-LED can operate at an extremely high current density of 4.6kAcm-2, achieving extremely high optical output power and modulation bandwidth up to 435MHz; and Compared with traditional organic light-emitting diode displays (OLEDs), Micro-LEDs are made of inorganic materials, and their red, green and blue pixels have a longer lifespan, avoiding the problem of uneven display caused by different decay rates of OLED pixels. Moreover, research has shown that the optical o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 邓联文张健黄生祥
Owner CENT SOUTH UNIV
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