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A backlight driving method and display panel

A backlight driving and scanning signal technology, applied to static indicators, instruments, etc., can solve the problems of aggravating TFT threshold voltage drift and stability decline, and achieve the effect of improving threshold voltage drift, improving stability, and increasing pulse cycle

Active Publication Date: 2022-07-29
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the research and practice of the prior art, the inventors of the present application found that the stability of the TFT is strongly related to the time of the high level of the scanning signal (Scan high), and if the high level time is too long, the threshold value of the TFT will be aggravated. Voltage shift (Vth shift), resulting in decreased stability

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  • A backlight driving method and display panel
  • A backlight driving method and display panel
  • A backlight driving method and display panel

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Embodiment Construction

[0036] The technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] In this application, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of features, numbers, steps, acts, components, parts or combinations thereof disclosed in this specification and are not intended to exclude a or multiple other features, numbers, steps, acts, components, parts or combinations thereof may exist or be added.

[0038] The present application provides a backlight driving method and a display panel. E...

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Abstract

The present application discloses a backlight driving method and a display panel. The backlight driving method provided by the present application uses the pulse width modulation technology to modulate the low-level pulse width of the scan signal. By increasing the low-level pulse width to increase the pulse period, and reducing the number of high-level pulses, the high-level pulse time is reduced. Then, the time for the TFT to be subjected to a high-level voltage is also reduced, thereby improving the stability of the TFT and improving the problem of the threshold voltage drift of the TFT.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to a backlight driving method and a display panel. Background technique [0002] Mini light-emitting diode (Minilight-emitting diode, Mini LED) backplane driver currently has active matrix (ActiveMatrix, AM) driver and passive matrix (Passive Matrix, PM) driver. Since the Thin Film Transistor (TFT) in the Mini-LED AM drive can play a switching role, a lot of driver integrated circuits (Integrated Circuit, IC) can be saved compared to the PM, so the cost of the AM drive is lower than that of the PM drive. . AM-driven backplane technologies currently use amorphous silicon (α-Si), indium gallium zinc oxide (IGZO) and low temperature polysilicon (LTPS). The stability of TFT greatly affects the brightness and taste of MiniLED. During the research and practice of the prior art, the inventor of the present application found that the stability of the TFT is strongly relate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/3406G09G3/32G09G2300/0842G09G2310/08G09G2320/064
Inventor 胡道兵万广苗王航王旭胡聪徐洪远孙宇成
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD