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COB display screen mask and operation method thereof

A display screen and mask technology, applied in the field of COB display screen masks, can solve problems such as difficulty in adjusting contrast, large gaps in the inner cavity of the mask, and difficult light treatment, so as to reduce light loss, improve black and white contrast and clarity, and avoid polarized light Effect

Inactive Publication Date: 2020-03-27
深圳市海讯高科技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The material technology of the COB display screen mask in the prior art is mainly made of PC and fiber injection molding; its disadvantages are also obvious. After long-term use, thermal expansion will cause the display screen to deform, and at the same time, the gap in the inner cavity of the mask is large. Difficulty working with light and therefore difficult to adjust contrast

Method used

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  • COB display screen mask and operation method thereof
  • COB display screen mask and operation method thereof
  • COB display screen mask and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 with figure 2 , a COB display screen mask, including a first mask 10 and a second mask 20, the first mask 10 is covered on the second mask 20, and several roads are respectively arranged on the first mask 10 and the second mask 20 The first mask hole 11 and several second mask holes 21, the first mask 10 and the second mask 20 are all made of aluminum alloy material by precision stamping, so that the whole mask is accurate and uniform in size, smooth in surface, free from spots and No scars, no scratches, no surface cracks; at the same time, the alloy material has a good light-shielding effect and good heat dissipation.

[0031] The first mask hole 11 and the second mask hole 21 match each other and are located on the same axis, the first mask hole 11 inner diameter is greater than the second mask hole 21 inner diameter, the first mask 10 and the second mask 20 All surfaces are mirror-finished.

[0032] During operation, the first mask 10 and the second...

Embodiment 2

[0038] see figure 1 with figure 2 , as a further optimization of Embodiment 1, the difference is that the upper surface of the second mask 20 has a matte surface 7, the matte surface 7 is formed by mirror-removing treatment, and the matte surface 7 is then sprayed or painted. Oxidation or plating treatment forms a black matte. Due to the low reflectivity of black, it effectively reduces the situation that external light touches the upper surface of the second mask 20 to generate reflection; meanwhile, the matte surface 7 further forms diffuse reflection and irregular reflection, which reduces the interference to the light emission of the display screen body , thus further improving the black and white contrast and clarity of the display.

Embodiment 3

[0040] On the basis of the above-mentioned embodiments, the present invention also provides a working method for a COB display screen mask, the working method comprising the following steps:

[0041] 1) Stamping forming: high-density aluminum alloy material is selected and pressed tightly by equipment to form the first mask 10 and the second mask 20; the inner diameters of the first mask hole 11 and the second mask hole 21 are based on the contrast of the corresponding model display screen And design, simultaneously described first mask hole 11 internal diameters are greater than the second mask hole 21 internal diameters, are designed as the structural feature that up is small and bottom is big.

[0042] 2) mirror surface treatment: carry out mirror surface treatment to the surface of the first mask 10 and the second mask 20, increase the surface brightness to 30%, thereby improving the reflection effect and light guiding effect of the mask holes;

[0043] 3) Pressing operati...

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Abstract

The invention discloses a COB display screen mask and an operation method thereof, and relates to the COB display screen field. The COB display screen mask comprises a first mask and a second mask, wherein the first mask covers the second mask; a plurality of first mask holes and a plurality of second mask holes are respectively formed in the first mask and the second mask; the first mask body andthe second mask body are both formed by precisely stamping aluminum alloy materials; the first mask hole and the second mask hole are matched with each other and located on the same axis; and the inner diameter of the first mask hole is larger than that of the second mask hole. Compared with the prior art, the COB display screen mask can avoid the problem of deformation caused by thermal expansion, and can effectively improve the contrast ratio and the definition of the display screen.

Description

technical field [0001] The invention relates to the field of COB display screens, in particular to a COB display screen mask and an operation method thereof. Background technique [0002] At present, the LED full-color display is to package the LED red, green and blue chips into SMD devices, and then paste them on the PCB through printing, patch, reflow soldering and other methods to form an LED module display. The LED lamp beads used in the modules above P2 are SMD devices made by packaging the chip on the bracket, mainly through die bonding, wire bonding, dispensing, light splitting, tape, and packaging. COB technology is an emerging LED packaging technology, which is different from traditional SMD surface-mount packaging. It integrates light-emitting chips into the PCB board instead of soldering them to the PCB one by one. COB technology effectively improves the light color of the LED display, reduces risks and costs. [0003] The material technology of the COB display ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33
CPCG09F9/33
Inventor 田国辉
Owner 深圳市海讯高科技术有限公司
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