LED display module and LED display screen

Abstract

The invention discloses an LED display module and an LED display screen. The LED display module comprises a mask, a printed circuit board and a plurality of LED lamp beads. The plurality of LED lamp beads are fixed on the printed circuit board; the ends, deviating from the printed circuit board, of the LED lamp beads are provided with upper surfaces. A plurality of through holes are formed in the mask, each through hole comprises a first hole and a second hole which are coaxial, and a step is formed between the first hole and the second hole; the plurality of LED lamp beads are in one-to-one correspondence with the plurality of through holes; the mask is fixedly connected with the side, where the LED lamp beads are fixed, of the printed circuit board, the upper surface of the mask extends into the first hole, a step between the first hole and the second hole covers one part of the upper surface, and the other part of the upper surface is exposed through the second hole. The steps shield the pins of the LED lamp beads, part of the top surface of the printed circuit board and part of the upper surfaces of the LED lamp beads, so that the display uniformity and the contrast ratio are improved, and the problem of optical crosstalk between adjacent pixels in the LED display screen is solved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to an LED display module and an LED display screen. Background technique [0002] Light emitting diode (light emitting diode, LED) display screens have the advantages of wide color gamut, high brightness, large viewing angle, low power consumption, and long service life. Therefore, in the display field, LED display screens are widely used. For example, more common securities trading and financial information display, airport flight dynamic information display, port and station passenger guidance information display, stadium information display, road traffic information display, power dispatching and vehicle dynamic tracking and other dispatching command center information display, shopping malls Display of business publicity information and advertising media products in service areas such as centers. [0003] The current LED display screens are generally spliced ​​by mul...

AI Technical Summary

Problems solved by technology

[0006] However, the current LED display mask also has the following problems: (1) The cover of the mask to the pins of the printed circuit board and the LED lamp beads is insufficient, resulting in poor uniformity and contrast of the LED display.

(2) With the development of small-pitch LED display products, the size of the barrier structure of the mask is reduced, and the ability to improve optical crosstalk is reduced

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