Method, device and system for remotely measuring Flicker scintillation value of liquid crystal module

A liquid crystal module and flicker value technology, applied in the direction of instruments, static indicators, etc., can solve the problems of limited number of collection frames, low detection efficiency of production line, and large number of collected frames, etc., to achieve rapid detection and improve detection efficiency and the effect of production yield
CN110211523AActive Publication Date: 2019-09-06WUHAN JINGLI ELECTRONICS TECH +1
8 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN JINGLI ELECTRONICS TECH
Publication Date
2019-09-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention belongs to the technical field of display panel detection, and discloses a method, a device and a system for remotely measuring a Flicker scintillation value of a liquid crystal module.The method includes: carrying out continuous image capturing on a display image of the liquid crystal module under a certain common electrode voltage; obtaining the average brightness of the image frames, obtaining the change relation of the brightness with the number of collected frames or time, i.e., the time domain signal of the brightness, obtaining the spectrogram of the brightness through the time domain signal, and obtaining the Flicker scintillation value of the liquid crystal module to be detected under the common electrode voltage through the amplitude of the specific frequency wave.The device comprises equipment for continuously capturing images of a liquid crystal module under a certain common electrode voltage, A calculation processing module used for calculating the averagebrightness to obtain a time domain signal of the brightness, A Fourier transform module used for carrying out fast Fourier transform on the time domain signal of the brightness, and A Flicker scintillation value calculation module used for calculating a Flicker scintillation value. according to the method and the system, the Flicker scintillation value of the display screen can be remotely measured, and the method and the system are used for monitoring the flicker degree of the liquid crystal display screen in real time in a panel production line.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of liquid crystal display panel detection, and more specifically relates to a method, device and system for remotely measuring the Flicker flicker value of a liquid crystal module. Background technique

[0002] Thin film transistor liquid crystal display (TFT-LCD) occupies a pivotal position in the display industry. TFT-LCD controls the deflection of liquid crystal molecules by applying different voltages to the pixel electrodes and forming an electric field with the common electrode, so as to achieve the purpose of light transmission and light shielding. The voltage difference between the pixel electrode and the common electrode determines the display gray scale. When the TFT-LCD is working, the polarity of the pixel voltage changes periodically to avoid DC residual and DC blocking effects. Every time the LCD screen is refreshed, the polarity of the pixel voltage changes once. If the Common electrode volt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More