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Self-cleaning anti-fingerprint cover glass for touch screen and preparation method thereof

A cover glass, self-cleaning technology, applied in copper oxide/copper hydroxide, zinc oxide/zinc hydroxide, etc., can solve problems such as leaving fingerprints, scratches on the touch screen, and not easy to erase

Active Publication Date: 2020-10-20
CHONGQING ZHONGGUANGDIAN DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A protective film is attached to the cover glass. The surface of the protective film has uneven microstructures to increase scattered light and avoid glare. However, when the user touches the cover glass, the oil and dust on the hands will It is easy to leave traces on the touch screen, and these traces are not easy to erase. Fingerprints will be left after continued operation, and frequent wiping of the cover glass can easily scratch the touch screen and affect the display. Quality effect, bring great inconvenience to users

Method used

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  • Self-cleaning anti-fingerprint cover glass for touch screen and preparation method thereof
  • Self-cleaning anti-fingerprint cover glass for touch screen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation of Tetraacicular ZnO Whiskers

[0025] Take the zinc pellets and put them into a tablet machine to press them into thin slices, then put them into an alumina crucible, place the alumina crucible in a muffle furnace, raise the temperature to 450°C at a rate of 8°C / min and keep it at a constant temperature for 2 hours, then heat it up for 5 Raise the temperature at a rate of °C / min to 950 °C and keep at a constant temperature for 1 hour, cool down with the furnace, and grind to obtain tetraneedle-shaped ZnO powder.

[0026] S-4800 field emission scanning electron microscope was used to test the morphology of the ZnO powder prepared in this example, and it was found that the ZnO whisker particle size in the ZnO powder sample was small, and there were four needles with uniform diameters growing, and The roots of the needles grow together, the root end is thicker, the top is thinner, and the root end smoothly transitions to the tip without sudden chang...

Embodiment 2

[0027] Example 2: Preparation of self-cleaning composite nanoparticles

[0028] Take the four-needle ZnO whisker and soak it in 0.1mol / L copper acetate solution at 65°C for 1min, wash it with deionized water, then submerge it in 0.02mol / L NaOH solution at 65°C for 1min, and wash it with deionized water , repeated immersion in copper acetate solution and NaOH solution 10 times, after washing and drying, transferred to a tube vacuum furnace in an argon atmosphere, raised the temperature to 300 ° C for 2 hours, and cooled with the furnace to obtain ZnO-Cu 2 O composite particles. Using field emission scanning electron microscopy, it was found that nano-Cu in the sample2 O attaches to the whisker roots and whiskers of the tetraacicular ZnO whiskers.

[0029] Take absolute ethanol and deionized water and mix them at a volume ratio of 3:4 to obtain a mixed solution, and put 0.5g of ZnO-Cu into each 100mL mixed solution 2 O composite particles, ultrasonically disperse at 25kHz for ...

Embodiment 3

[0030] Example 3: Preparation of self-cleaning composite nanoparticles

[0031] Take four-needle ZnO whiskers and soak in 0.1mol / L copper acetate solution at 65°C for 3 minutes, wash with deionized water, then soak in 0.02mol / L NaOH solution at 65°C for 3 minutes, and wash with deionized water , repeated immersion in copper acetate solution and NaOH solution 10 times, after washing and drying, transferred to a tube vacuum furnace in an argon atmosphere, raised the temperature to 350 ° C for 2 hours, and cooled with the furnace to obtain ZnO-Cu 2 O composite particles. Using field emission scanning electron microscopy, it was found that nano-Cu in the sample 2 O attaches to the whisker roots and whiskers of the tetraacicular ZnO whiskers.

[0032] Take absolute ethanol and deionized water and mix them at a volume ratio of 3:4 to obtain a mixed solution, and put 0.5g of ZnO-Cu into each 100mL mixed solution 2 O composite particles, ultrasonically disperse at 25kHz for 5min, t...

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Abstract

The invention relates to the technical field of touch screens, particularly to a self-cleaning anti-fingerprint cover plate glass for touch screens, and a preparation method thereof. The self-cleaninganti-fingerprint cover plate glass comprises an ultra-thin glass raw sheet and a self-cleaning film, wherein ethanol is used as a main solvent and 5-8 wt% of self-cleaning composite nanoparticles aredispersed in the ethanol to form a self-cleaning coating material, and ZnO-Cu2O composite particles are coated with a SiO2 layer, and soaking and hydrophobic modification is performed with hexamethyldisiloxane to obtain a core-shell structure, ie., the self-cleaning composite nanoparticles. The preparation method comprises: preparing a self-cleaning coating material, spraying, and curing to formthe film. According to the present invention, the preparation method is simple, the operation is convenient, and the prepared cover plate glass has excellent self-cleaning ability, can avoid the display quality reduction caused by the pollution of oil stains and dust on the cover plate glass, and does not easily leave obvious fingerprint mark during the use.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to self-cleaning anti-fingerprint cover glass for touch screens and a preparation method thereof. Background technique [0002] In recent years, high-tech new products such as smart phones, tablet computers and other wearable electronic products have been favored by people, and most electronic products have realized touch screen functions. Touch screen, also known as "touch screen" or "touch panel", is an inductive glass liquid crystal display device that can receive input signals such as contacts. When touching the graphic buttons on the screen, the tactile feedback system on the screen It can drive various connection devices according to the pre-programmed program, which can be used to replace the mechanical button panel, and can produce vivid audio-visual effects through the liquid crystal display screen. As the latest computer input device, the touch screen is currently t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/00C01G9/02C01G3/02
CPCC01G3/02C01G9/02C03C17/009
Inventor 李宪荣
Owner CHONGQING ZHONGGUANGDIAN DISPLAY TECH CO LTD
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