Abstract: The present disclosure provides RGB-LED packaging modules and a display screen including a substrate; a plurality of light-emitting units disposed on the substrate, each light-emitting unit including a set of RGB-LED chips; a plastic layer provided on the light-emitting units; and a virtual isolating region provided between the light-emitting units, the virtual isolating region including a black light-absorbing layer provided on the substrate. The present disclosure makes use of the black light-absorbing layer to absorb light which may cause interference among the light-emitting units. By providing the virtual isolating region and an isolating trough, and utilizing the difference of refractive index of packaging plastic and refractive index of air, light emitted by the light-emitting units can be reflected to reduce the influence of adjacent light-emitting units. A black isolating-frame is filled in the isolating trough to minimize the interference among the light-emitting units.

Abstract: The present disclosure provides RGB-LED packaging modules and a display screen including a substrate; a plurality of light-emitting units disposed on the substrate, each light-emitting unit including a set of RGB-LED chips; a plastic layer provided on the light-emitting units; and a virtual isolating region provided between the light-emitting units, the virtual isolating region including a black light-absorbing layer provided on the substrate. The present disclosure makes use of the black light-absorbing layer to absorb light which may cause interference among the light-emitting units. By providing the virtual isolating region and an isolating trough, and utilizing the difference of refractive index of packaging plastic and refractive index of air, light emitted by the light-emitting units can be reflected to reduce the influence of adjacent light-emitting units. A black isolating-frame is filled in the isolating trough to minimize the interference among the light-emitting units.

Abstract: The present invention provides an integrated RGB LED display screen (1), comprising a printed circuit board (PCB) and a plurality of RGB LED packaging modules (2) welded on the PCB, wherein each packaging module (2) comprises a packaging holder and light emitting units arranged on the packaging holder, the number of the light emitting units is at least two, and each group of light emitting units comprises a group of RGB LED chips (301). The integrated RGB LED display screen (1) provided by the present invention has the advantages that a plurality of light emitting units is integrated on one packaging module, thereby further improving the production efficiency and reducing the production cost. In addition, the plurality of light emitting units is integrated on one packaging module, which can effectively improve the overall resistance of the display screen to the external mechanical strength.

Abstract: The present invention provides a surface-mounted RGB-LED packaging module and a preparing method thereof, a protective layer is arranged on the light emitting units, the number of the light emitting units is at least two, each light emitting unit includes four mutually independent upper pads and a group of RGB LED chips, the RGB LED chips are arranged on any one of the upper pads and connected with the other three upper pads by keys and wires, each upper pad is provided with a metal hole that penetrates the substrate and is conductive up and down, lower pads are arranged on the reverse side of the substrate corresponding to the metal holes, and the lower pads are independent from each other, so the production efficiency of LEDs in subsequent production and application is greatly improved, and the production cost is greatly reduced.

Abstract: The present invention provides a QFN surface-mounted RGB LED packaging module and a preparing method thereof, which includes a packaging holder and light emitting units arranged on the packaging holder, the packaging holder includes a metal baseboard and an insulating frame, holder electrodes for die bond and wire weld are arranged on the metal baseboard at regions where each light emitting unit is located, each light emitting unit includes RGB LED chips fixed on the metal baseboard as well as keys and wires for connecting the RGB LED chips with the holder electrodes, a protective layer is arranged on the light emitting units, and the holder electrodes are connected with an external circuit by pads arranged on the back of the metal baseboard, so that the light emitting surface is unique; and the plurality of light emitting units is integrated on one packaging module to further improve the production efficiency.