7 Segment LED :: LED heat dissipation

With the emergence of charge pump, the efficiency of charge pump booster is lower than that of inductance booster. The problems product designers must face; Improve the conversion efficiency of drive circuit. It is conducive to extending the standby time of portable products and solving the problem of LED heat dissipation, especially in the lighting field where high-power LED is used.

White 8x8 Dot Matrix Display LED 5.0mm Diameter 2.4 inch 2.3 Anode Cathode 5mm
Blue 7 Segment Display LED 7-Segment 2.3" 2.3 inch 1-Digit Single Common Anode CA
White 8x8 Dot Matrix Display LED 3.7mm Diameter 1.5 inch Anode Cathode
Yellow Green LED 7 Segment 0.5 inch 0.5 3 Digit Three Display Common Cathode CC
Green 7 Segment LED Display 0.56 inch Single Digit 1 7-seg CC CA
Yellow LED Seven Segment Display 0.40" Single Digit 1 0.4-inch Common Cathode CC
Orange Seven Segment LED Display 0.3 inch 0.3" Three Digit 3 Common Anode
Orange 8x8 Display Dot Matrix 3.7mm Diameter 1.5" CA LED CC
Yellow Green 5x7 LED Dot Matrix 10mm Diameter 4.2" Display CC Cathode
Orange Seven Segment LED Display 0.4 inch 0.4" Three Digit 3 Common Anode 0.40inch

This way of work out of the product is ugly appearance (the size of the solder joint is not consistent, flux residue, solder joint is not smooth, LED packaging is hot bad, etc.), the second is the electrostatic protection measures are not good, many LED chips were broken down, resulting in the phenomenon of light or not light when the power.

3203AS LED 3203AS 7-Segment 3203BS Display 3203BS 0.30 inch

Whether it is monochrome, two-color or three-color LED display, the luminance of each LED that constitutes a pixel must be adjusted to display the image, and the fine degree of adjustment is the gray level of the LED display. The higher the gray level, the more delicate the image display, the richer the color, the more complex the corresponding display control system. Generally 256 level gray image, color transition has been very soft, and 16 level gray color image, color transition boundary is very obvious. Therefore, the color LED display is required to make 256 levels of gray. Leds used in LED displays come in the following forms.

3941AB LED 3941AB 0.39 inch 3941BB 7-Segment 3941BB Display

However, it is unable to detect pedestrian and road signs, and cannot judge the target movement trajectory, so the accuracy is low and the cost is high, and it is still in the market introduction period. The principle of image visual object recognition is to collect external image information through LED cameras, and carry out image recognition through complex algorithms, which can identify pedestrians and road signs, and can calculate the target action trajectory through algorithms, and the cost is low, but the effect is poor in foggy or rainy days, and it is greatly affected by light, and it is still in the early and middle stages of the growth period.

Red 3251AGG LED 3251AGG 5-digit 3251BGG Segment 3251BGG