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LED nano black coating and LED display module

A technology of black coating and LED chips, applied in coating, polyester coating, epoxy resin coating, etc., can solve the problems of LED display color difference and insufficient contrast

Active Publication Date: 2021-10-22
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of chromatic aberration and insufficient contrast in existing LED display screens, the present invention provides an LED nano-black coating and an LED display module

Method used

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  • LED nano black coating and LED display module
  • LED nano black coating and LED display module

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Embodiment 1

[0056] This embodiment is used to illustrate a LED display module disclosed by the present invention, including a PCB board, LED chips, packaging layer, driver IC and LED nano-black coating, the number of the LED chips is multiple, and the multiple LED chips The LED chip is arranged on the surface of the PCB board, the packaging layer is arranged on the surface of the PCB board and covers the LED chip, and the LED nano-black coating is arranged on a side of the packaging layer away from the PCB board. On the side, the driver IC is arranged on the side of the PCB board away from the LED chip, and the driver IC is electrically connected to the LED chip.

[0057] Wherein, the thickness of the LED nano-black coating is 3um, and the LED nano-black coating includes a resin coating and nano-carbon black dispersed in the resin coating, and the particle size of the nano-carbon black is 30 to 30 μm. 200nm, the number of nano carbon black particles per unit area is 25-900 / um 2 , the lig...

Embodiment 2

[0059] This embodiment is used to illustrate an LED display module disclosed by the present invention, including most of the technical features in Embodiment 1, the difference being:

[0060] The thickness of the LED nano-black coating is 3um, and the LED nano-black coating includes a resin coating and nano-graphene dispersed in the resin coating, and the particle diameter of the nano-graphene is 10-200nm, The number of nano-graphene particles per unit area is 300-900 / um 2 , the light transmittance of the LED nano black coating is 70%.

Embodiment 3

[0062] This embodiment is used to illustrate an LED display module disclosed by the present invention, including most of the technical features in Embodiment 1, the difference being:

[0063] The thickness of the LED nano-black coating is 3um, and the LED nano-black coating includes a resin coating and nano-graphene and nano-silicon dioxide dispersed in the resin coating, and the addition of the nano-silicon dioxide The amount is 1 wt%, the particle size of the nano-graphene is 10-200nm, and the number of nano-graphene particles per unit area is 30-300 / um 2 , the light transmittance of the LED nano black coating is 70%.

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Abstract

In order to solve the problem that an existing LED display screen is insufficient in chromatic aberration and contrast ratio, the invention provides an LED nano black coating which comprises a resin coating and nano black particles dispersed in the resin coating, wherein the particle size of the nano black particles is 10-800 nm, the number of the nano black particles per unit area is 5-2500 / micron < 2 >, and the light transmittance of the LED nanometer black coating ranges from 30% to 99%. Meanwhile, the invention further discloses an LED display module comprising the LED nano black coating. The LED nano black coating provided by the invention has a certain shielding effect on the colors of the PCB and the LED chip on the bottom layer, so that the LED display module can present a whole-board black visual effect; and when the LED display module works, a light-emitting area and a non-light-emitting area have a relatively good contrast ratio, so that image display is facilitated.

Description

technical field [0001] The invention belongs to the technical field of LEDs, and in particular relates to an LED nano-black coating and an LED display module. Background technique [0002] With its unique advantages, LED large-screen display is widely used in various places such as entertainment and sports, financial securities, and transportation stations, and has become the most common display media for information dissemination, news release, and advertising. [0003] Some large-scale LED displays are generally obtained by splicing multiple LED display modules, and due to the subtle differences in the processes of each production batch, it is easy to cause color inconsistency among different batches of display modules, such as the use of Inconsistent chromaticity of the encapsulant, or inconsistent color of the PCB bottom plate, etc., will lead to a certain color difference between different batches of LED display modules. When splicing into a large LED screen, due to the...

Claims

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Application Information

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IPC IPC(8): C09D201/00C09D7/61C09D133/04C09D163/00C09D167/00C09D175/04G02B1/10G09F9/33
CPCC09D201/00C09D7/61C09D7/67C09D7/68C09D133/04C09D163/00C09D167/00C09D175/04G02B1/10G09F9/33C08K2201/011C08K3/04C08K3/042C08K3/36
Inventor 黄艳轶
Owner GUANGZHOU HUMAN CHEM
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