Novel OLED screen protective film and preparation method and application thereof

A technology of screen protection film and protective film, which is applied in the direction of adhesive type, film/sheet release liner, film/sheet adhesive, etc., which can solve the strict requirements of static electricity, lack of OLED display protective film, etc. Problems, to achieve the effect of low static voltage of tear film, excellent exhaust, and prolong service life

Pending Publication Date: 2021-04-30
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of OLED in recent years, it has been gradually used in display fields such as mobile phones, computers, TVs, and car displays. Because it is getting thinner and thinner, and has stricter requirements on static electricity, there is a lack of protection suitable for OLED displays on the market. membrane

Method used

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  • Novel OLED screen protective film and preparation method and application thereof
  • Novel OLED screen protective film and preparation method and application thereof
  • Novel OLED screen protective film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] S1. The hardness of TPU is set to 45-50HD, and anti-ultraviolet and anti-static TPU film is used;

[0034] S2. The production process of the thermosetting TPU layer is the slit coating method, the speed of the vehicle is 20m / min, the drying temperature of the coating machine oven is set at 55-105°C, and 6 baking stages are set in sequence during the drying process. Section 55°C, 75°C, 95°C, 105°C, 95°C, 75°C;

[0035] S3, remove the release film of one side of TPU, and apply hardening solution;

[0036] S4. The production process of the hardened layer is the coating method, the vehicle speed is 25m / min, the drying temperature of the front oven is set at 60-110°C, and the drying process is set with 4 baking sections of 65°C, 80°C, 95°C, and 105°C , the back-end UV curing energy is set to 480mj / cm 2 ;The thickness of the hardened layer is 2-5μm, and the hardness of the hardened layer is greater than 3H;

[0037] S5, remove the release film on the other side of the TPU,...

Embodiment 2

[0042] S1. The hardness of TPU is set to 45-50HD, and anti-ultraviolet and anti-static TPU film is used;

[0043] S2. The production process of the thermosetting TPU layer is the slit coating method, the speed of the vehicle is 20m / min, the drying temperature of the coating machine oven is set at 55-105°C, and 6 baking stages are set in sequence during the drying process. Section 55°C, 75°C, 95°C, 105°C, 95°C, 75°C;

[0044]S3, remove the release film on one side of TPU, use TPU as the coating base material, and coat PU glue;

[0045] S4. The production process of PU glue is the coating method, the speed of the vehicle is 21m / min, the drying temperature of the coating machine oven is set at 85-135°C, and six baking sections of 85°C and 105°C are set in turn during the drying process. ℃, 125℃, 135℃, 125℃, 105℃;

[0046] S5. The release film bonded with PU glue is an antistatic release film;

[0047] S6. After the sample is completed, it needs to be aged at 80°C for 24 hours....

Embodiment 3

[0049] S1. Adjust the hardness of the TPU layer to 90HD, and use anti-ultraviolet and anti-static TPU film;

[0050] S2. The production process of the thermosetting TPU layer is the slit coating method, the speed of the vehicle is 20m / min, the drying temperature of the coating machine oven is set at 55-105°C, and 6 baking stages are set in sequence during the drying process. Section 55°C, 75°C, 95°C, 105°C, 95°C, 75°C;

[0051] S3, remove the release film of one side of TPU, and apply hardening solution;

[0052] S4. The production process of the hardened layer is the coating method, the vehicle speed is 25m / min, the drying temperature of the front oven is set at 60-110°C, and the drying process is set with 4 baking sections of 65°C, 80°C, 95°C, and 105°C , the back-end UV curing energy is set to 480mj / cm 2 ;The thickness of the hardened layer is 2-5μm, and the hardness of the hardened layer is greater than 3H;

[0053] S5, remove the release film on the other side of the T...

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Abstract

The invention relates to the technical field of electronic screen protective films, in particular to a novel OLED screen protective film and a preparation method and application thereof. According to the novel OLED screen protective film. The protective film is composed of a release film and / or a hardened layer, a TPU base material layer, a PU adhesive layer and a first antistatic release film from top to bottom. The TPU base material layer adopts an anti-ultraviolet and anti-static TPU film, and the PU adhesive layer adopts an anti-static PU adhesive. Compared with the prior art, the protective film has the advantages that the protective film has good exhaust performance, weather resistance, low film tearing electrostatic voltage and excellent optical performance, does not generate residual glue after long-time use, and is suitable for various OLED screens including foldable screens, curved screens, ultrathin screens and other products.

Description

technical field [0001] The present application relates to the technical field of electronic screen protection films, in particular to a novel OLED screen protection film and its preparation method and application. Background technique [0002] Organic Light Emitting Diode (OLED) is a photoelectric technology that uses organic semiconductor materials to produce reversible discoloration under current drive to achieve colorful display. OLED has the advantages of thinness, high brightness, wide viewing angle, fast response, flexibility, etc., and is considered to be the most promising new generation display technology. With the development of OLED in recent years, it has been gradually used in display fields such as mobile phones, computers, TVs, and car displays. Because it is getting thinner and thinner, and has stricter requirements on static electricity, there is a lack of protection suitable for OLED displays on the market. membrane. In summary, OLED screens need to be ma...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J7/40C09J7/30C09J175/04H01L51/52
CPCC09J7/25C09J7/40C09J7/30C09J175/04C09J2475/006H10K50/8426
Inventor 金亚东杨帆宋明雄周玉波朱正平
Owner NINGBO CHANGYANG TECH
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