A kind of led display unit and led display screen

Abstract

The invention discloses an LED display unit and an LED display screen, belonging to the technical field of LED display screens. The LED display unit includes a substrate, a plurality of flip-chip bare crystal LED light-emitting chips, a plurality of bare crystal constant current drive chips and a signal control module: the front of the substrate is provided with an RGB drive circuit, and the back is provided with a control circuit and a power supply circuit. The circuit, control circuit and power supply circuit are all ITO coated circuits or copper-clad circuits; the substrate is provided with conductive holes, and the control circuit and power supply circuit are electrically connected to the RGB drive circuit through conductive holes; flip-chip bare crystal LED light-emitting chips and bare crystal constant current The driver chip is arranged on the front of the substrate and is electrically connected to the RGB driver circuit, wherein each bare crystal constant current driver chip drives at least one flip-chip bare crystal LED light-emitting chip; the signal control module is fixed on the back of the substrate with the power supply circuit and the control circuit electrical connection. By adopting the present invention, the pixel pitch of the LED display screen can be effectively reduced, and the stability of the display image signal, the simplicity of product construction process integration and the seamless splicing among LED display units can be realized.

Description

technical field [0001] The invention relates to the technical field of LED display screens, in particular to an LED display unit and an LED display screen. Background technique [0002] With the development of LED display technology, micro-pitch LED display has gradually occupied an important position in the LED display technology industry due to its small spacing, clear display screen, and low power consumption. Most of the LED displays are spliced ​​by multiple display modules. Each display module includes a PCB board and at least one light board fixed on the PCB. The light board is equipped with multiple full-color RGB (red, yellow, blue) Three primary colors) LED lights, each light board is equipped with an external constant current drive circuit board, the constant current drive circuit board and each display module are connected to the HUB board through a transmission cable to realize receiving and transmitting control signals , to control and drive each display unit ...

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an LED display unit and an LED display screen, which solves the problem that the micro-pitch LED display screen in the prior art is limited by the manufacturing method of the light board and cannot achieve a smaller micro-pitch LED display screen. Space requirements and difficulty in achieving display image signal stability and product construction process integration simplicity

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