Method for measuring brightness of dispLay paneL
A display panel and brightness technology, applied in nonlinear optics, instruments, optics, etc., can solve the problem that it is impossible to accurately determine whether the light leakage is from a black matrix or a pixel of which color, it is difficult to achieve pixel-level measurement, and it is impossible to accurately analyze light leakage. reasons, etc.
Inactive Publication Date: 2018-11-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
The main method to increase the ratio of the brightness of the brightest all-white picture to the darkest all-black picture of an LCD display includes reducing the light leakage of the all-black and darkest picture of a liquid crystal display. Thousands of pixels, so it is difficult to achieve pixel-level measurement using existing brightness measurement equipment, and only the brightness in one area can be analyzed, but this area includes both sub-pixels of different colors and individual sub-pixels At this time, due to the limitation of the minimum measurement area of the brightness measurement equipment, it is impossible to measure the brightness of only one sub-pixel or only a section of black matrix between two sub-pixels. When analyzing light leakage, it is impossible to accurately determine Whether the light leakage comes from the black matrix or which color of the pixel makes it impossible to accurately analyze the cause of the light leakage
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[0028] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0029] see figure 1 and Figure 7 , the invention provides a method for measuring the brightness of a display panel, comprising the following steps:
[0030] Step S1, providing a display panel 1, a mask plate 2 and a brightness measuring device 3, the mask plate 2 includes at least two light-transmitting regions 21 and light-shielding regions 22 located around each light-transmitting region 21, the brightness measuring device The minimum measurement area of 3 is greater than the area of each light-transmitting region 21 and smaller than the sum of the areas of each light-transmitting region 21;
[0031] Step S2, using the mask plate 2 to cover the display panel 1, and aligning the light-transmitting area 21 with the target measurement ar...
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The invention provides a method for measuring brightness of a dispLay paneL. The method for measuring brightness of the dispLay paneL comprises the foLLowing steps: a dispLay paneL, a mask pLate and abrightness measuring device are provided; wherein the mask pLate comprises at Least two Light-transmitting areas and a Light-shieLding area Located around each of the Light-transmitting area, and theminimum measurement area of the brightness measuring device is smaLLer than the sum of the areas of the respective Light-transmitting areas; the dispLay paneL is bLocked by the mask pLate and the Light-transmitting area is aLigned with the target measuring area of the dispLay paneL to expose the target measurement area of the dispLay paneL; the brightness of the target measurement area of the dispLay paneL is measured by the brightness measuring device, and area outside the target measurement area of the dispLay paneL is bLocked by the mask pLate, so that the brightness of a speciaL sub-pixeLarea or a specific non-Light-emitting area can be measured by using the existing brightness measuring device, which is convenient for anaLyzing and positioning the Light Leakage position of the dispLay paneL.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a method for measuring brightness of a display panel. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, televisions, personal Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The direction of the liquid crystal molecules i...
Claims
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IPC IPC(8): G02F1/13
CPCG02F1/1309
Inventor 陈黎暄
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD