Lens combination converged LED array display

Abstract

The LED array display unit consists of LED chip arranged in basic circuit board and with lead-out wires, circuit board with reflecting cavity holes corresponding to the luminous pixels, several epoxy resin convex lenses corresponding to the LED chips with the light emitting angle being regulated by the curvature and height of the lenses. The display unit features that each light emitting pixel consists of several convex lenses dependent on the amount of the LED chips, so that each chip is in the center of the convex lens resulting in excellent color mixing effect of the chips; and that the dot matrix packing can raise the pixel density and definition of outdoor display screen and lower cost.

Description

technical field

[0001] The invention belongs to the technical field of an indicating device or a circuit for displaying variable information by a static method, and in particular relates to an electronic color display using a diode as a light source. technical background

[0002] The light-concentrating LED dot-matrix display in the prior art is usually composed of a circuit substrate, LED chips arranged in a dot matrix and a shell with a reflection cavity, and each reflection cavity shell is sealed by a molded epoxy resin convex lens. It overcomes the shortcomings of flat-panel displays, has high luminous intensity and good light-gathering performance. However, if multiple light-emitting diode chips of different colors are packaged in one pixel, due to the deviation of the positions of each chip in the same convex lens, it is impossible to keep the normal parallel, so the color difference of the color light perceived by the visual receptor at differ...

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