Full-color LED display device

Abstract

The invention relates to the technical field of electronic devices, in particular to a full-color LED display device which comprises three LED chips in colors of red, green and blue, four pins and a packaging body. The three LED chips are all packaged in the packaging body, the four pins all have a chip paddle respectively and all the chip paddles are in the laminate structure and packaged and fixed in the packaging body. The electrodes of the surfaces and backs of the three LED chips are different, and the backs of the three LED chips are in same electrode and respectively pasted on a first chip paddle; and the surfaces of the LED chips are respectively connected with a second chip paddle, a third chip paddle and a fourth chip paddle by metal leads. The full-color LED display device has small size and high reliability; and during assembling modules, the invention can realize SMD high-speed automatic assembly and achieve high productivity effect.

Description

technical field [0001] The invention relates to the technical field of electronic devices, in particular to a full-color LED display device. Background technique [0002] At present, the display screen composed of LEDs in life has been used as an important means of information dissemination and has become a symbol of urban information modernization. LED display screen is a display screen that displays by controlling the light emission of semiconductor light-emitting diode chips. Through the effective control of computer and other systems, it can truly restore red, green, and blue with 1024 gray levels to form 1.073 billion colors, and can display colors in real time. Rich text, animation, pictures and images and other information. The three light-emitting diode chips for the existing production of full-color LED display devices are installed on a bracket. The positive poles of the three diodes need to be electrically connected to the common pins by metal leads, and the nega...

AI Technical Summary

Problems solved by technology

The three light-emitting diode chips for the existing production of full-color LED display devices are installed on a bracket. The positive poles of the three diodes need to be electrically connected to the common pins by metal leads, and the negative poles of the three diodes are respectively connected to the three LEDs through metal leads. The pins are electrically connected, and the pins are all plug-in. This structure has the disadvantages of many welding lines, easy welding and weak welding, so the production cost is high, the production efficiency is low, and the reliability of the product is low. The feet are all plug-in, so it takes up a lot of space and is large in size. The display screen assembled by it generally has the disadvantages of large pixels and low resolution. If it is used to make a display screen with a relatively close indoor viewing angle, the color mixing effect will not In the best case, the chromatic aberration is particularly obvious when viewing

Images