Device and system for measuring flicker of a display panel

Abstract

A display panel flicker measuring device. Same comprises a light guide barrel (101), a flicker measuring probe (102), and an optical component (103) having a dissipation effect. The light guide barrel (101) comprises a first port (1011) and a second port (1012). The light guide barrel (101) is a trumpet-shaped structure gradually expanding from the second port (1012) to the first port (1011). The first port (1011) of the light guide barrel is for use in receiving a light emitted by surrounding and central regions of a display panel (104). The light is introduced into the light guide barrel via the first port (1011) and then emitted via the second port (1012), and is transmitted to the measuring probe (102) via the optical component (103) having the dissipation effect. With the flicker measuring device, flicker information of increased comprehensiveness can be acquired, thus increasing the accuracy of measurement. Also disclosed is a display panel flicker measurement system.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a device and system for measuring scintillation of a display panel. Background technique [0002] The flicker phenomenon of the display panel has a great impact on the quality of the display panel. The flicker of the display panel can stimulate the human visual system, making the human eyes feel uncomfortable, and the more serious flicker phenomenon will also cause certain harm. Therefore, in the manufacturing process of the display panel, it is indispensable to measure the flicker (Flicker) of the display panel. The flicker of the display panel is an important parameter to measure the driving voltage characteristics of the display panel. By measuring the flicker of the display panel to adjust the relevant parameters of the display panel, and then achieve the effect of reducing the flicker phenomenon, it is important to reduce the image sticking problem of the display panel....

AI Technical Summary

Problems solved by technology

[0004] However, as the size of the display panel becomes larger and larger, for example, for large-size display panels such as 46", 55", 66", or even 70", 90", due to the RC delay problem of the gate lines in the panel, The left, middle and right charging conditions are different, or the in-plane uniformity problem in the high-generation line TFT process causes the difference in the charging characteristics of the TFT device, etc., which will cause the flicker level of the central area and the surrounding area of ​​​​the large-sized display panel to be different. big difference

At this time, if the above measurement method is used, the Vcom value of the display panel is only adjusted for the flickering degree of the central point, so that the surrounding area of ​​the display panel is prone to image sticking (Image Sticking) after long-term use

However, if the Vcom value is only adjusted for the flickering degree of the surrounding area, image sticking is also likely to occur in other areas.

Images