RGB light emitting diode module with light shielding film

By setting a thin light-shielding film on the light-exit surface of the RGB light-emitting diode module, the light leakage problem between adjacent pixels is solved, the process difficulty is reduced and the light softness is improved, and a more comfortable display effect is achieved.

CN112447897BActive Publication Date: 2024-12-24李家铭
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Patent Information

Application Number
CN201910826516.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-09-03
Publication Date
2024-12-24
Estimated Expiration
2039-09-03

AI Technical Summary

Technical Problem

The light leakage problem between adjacent pixels in existing light emitting diode displays is difficult to effectively solve, resulting in increased process difficulty and poor accuracy of optical retaining wall setting or time-consuming.

Method used

A thinner light-shielding film is provided on the light-exit surface of the RGB light-emitting diode module. The distance between the light-shielding film and the light-exit surface is less than 10 μm, ensuring that light with a brightness of more than 90% is emitted in the thickness direction, while blocking light in the non-thickness direction to reduce light leakage.

Benefits of technology

The process difficulty is reduced, the steps of forming windows on the light-shading material are omitted, the light softness is improved, and a more comfortable viewing effect is provided.

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Abstract

The present application provides an RGB light-emitting diode module with a shading film, which includes a substrate, a circuit layer, a plurality of light-emitting diode chips and a shading film. The circuit layer is formed on the substrate, the light-emitting diode chips are electrically connected to the circuit layer respectively, and the top of the light-emitting diode chip has a light-emitting surface. The shading film covers the circuit layer and the light-emitting diode chip. The light-emitting surface of the light-emitting diode chip is covered by the shading film. The distance between the top surface of the shading film and the light-emitting surface in a thickness direction is less than 10 μm, and more light is selectively allowed to pass only in the thickness direction.
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Citation Information

Patent Citations

  • Light-emitting diode backlight module

    CN101144582A

  • Manufacturing method of light-emitting diode packaging structure

    CN103199172A

  • LED (light emitting diode) display unit panel with shading films

    CN103208239A

  • Flip-chip type LED (light emitting diode) and backlight module thereof

    CN103400921A

  • LED device for display screen and manufacturing method thereof

    CN103996788A