Backlight module group, light transmission uniformity detection system therefor, and LED mixed bead matching method for backlight module group

Abstract

The invention relates to a backlight module group, a light transmission uniformity detection system therefor, and an LED mixed bead matching method for the backlight module group. The method comprises the steps: detection, calculation and mixed matching. The method selects a plurality of LED chips with different luminous fluxes and/or light outgoing angles, and the plurality of LED chips are corresponding to a plurality of positions on a display screen, so as to compensate the brightness difference caused by the difference of light transmittance of the display screen at different positions, to achieve the fine tuning of the brightness of the display screen at different positions, and to finally enable the display brightness of the display screen to be uniform. Meanwhile, the display screen is a 2D, naked-eye 3D or glasses-type 3D display screen, and the above method can enable the uniformity of the display brightness of the display screen to be improved to 95% or more, thereby achieving the high-definition or ultra-high-definition display, and enabling the backlight module group to be higher in brightness, reliability and uniformity so s to meet the demands of a joint wall product or single-machine product with higher requirements for uniformity, such as a monitoring room joint screen, a single machine, a joint screen advertisement machine, or a single machine.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a light transmission uniformity detection system and an LED mixing and matching method thereof. Background technique [0002] At present, with the rapid development of technology, more and more occasions need to use large-scale LED display modules to display advertising information, commodity display information, conference information and so on. However, a common display module usually leads to a decrease in the light transmission uniformity of the screen when it is of a certain size. Moreover, for large-area splicing walls, advertising screens, etc., it needs to be formed by splicing multiple ordinary display modules, but because the splicing effect cannot achieve a perfect construction, it will make the large-area splicing walls, advertising screens, etc. emit light as a whole. The uniformity will be reduced, so the problem of uniformity of light output f...

AI Technical Summary

Problems solved by technology

Ordinary display modules usually lead to a decrease in the uniformity of light transmission of the screen when they are of a certain size.

Moreover, for large-area splicing walls, advertising screens, etc., it needs to be formed by splicing multiple common display modules, but because the splicing effect cannot achieve a perfect construction, it will make the large-area splicing walls, advertising screens, etc. emit light as a whole. The uniformity will be reduced, so the problem of uniformity of the overall screen light needs to be further solved

[0003] Of course, it is also possible that in order to achieve different display effects, the display module needs to continuously attach films with different functions on the display screen, and the interaction of each film makes the incident light emitted by the backlight module pass through the display screen. A consistent light output effect cannot be obtained, which makes the display brightness not uniform enough to meet the technical requirements for further improving the uniformity of light output. Market Competitiveness

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