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Optical composite sheet and display apparatus comprising same

A technology of optical composite sheets and light sources, applied in optics, optical components, nonlinear optics, etc., to achieve the effects of reducing color deviation, enhancing optical performance, and enhancing performance

Pending Publication Date: 2022-02-22
爱思开迈克沃解决方案有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, LCD TVs have an NTSC level of 72%

Method used

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  • Optical composite sheet and display apparatus comprising same
  • Optical composite sheet and display apparatus comprising same
  • Optical composite sheet and display apparatus comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0195] (A) In order to prepare the composition for the light absorbing layer, 0.05 parts by weight of a light absorber (PANAX NEC 584, Ukseung Chemical) and 1.0 parts by weight of a UV blocking agent (Tinuvin TM 928, BASF) was added to 100 parts by weight of the solution, which was mixed with acrylic binder resin (AOF-2914, Aekyung) and propylene glycol methyl ether (PGME) at a weight ratio of 30:70.

[0196] (B) A UV-curable resin was coated on one side of a base film (PET) having a thickness of 100 μm to form a prism pattern about 40 μm thick, thereby preparing a lower prism sheet. The composition for the light-absorbing layer was coated on the other side of the base film using a Mayer rod, dried and cured to form a 3 μm thick light-absorbing layer. A composition in which 15 parts by weight of polybutylmethacrylate (PBMA) beads, 35 parts by weight of urethane acrylic resin, and 50 parts by weight of methyl ethyl ketone (MEK) were mixed as a solvent was prepared. It was coa...

Embodiment 1-2

[0200] Repeat the steps of Example 1-1 to obtain the final optical composite sheet, provided that the other side of the lower prism sheet base film does not form a light-absorbing layer in step (B); but in step (C), on the upper prism sheet The other side of the light-absorbing layer forms a light-absorbing layer, and the surface of the light-absorbing layer is coated with an adhesive resin, which adheres to the lower prism sheet (see Figure 5a ).

Embodiment 2-1

[0206] Repeat steps (A)-(C) of Example 1-1 to obtain a composite sheet.

[0207] (D) A UV-curable adhesive resin was coated in a thickness of 0.5 to 1.0 μm on one side of a buffer film (PET) having a thickness of 100 μm. It is adhered to a pre-prepared composite sheet and UV cured.

[0208] (E) A composition in which 15 parts by weight of polymethylmethacrylate (PMMA) beads, 35 parts by weight of an acrylic binder resin, and 50 parts by weight of methyl ethyl ketone (MEK) were mixed as a solvent was prepared. The composition was coated on one side of a double brightness enhancement film (DBEF, Qv2, 3M) with a thickness of 95 μm, and dried to form an upper light diffusion layer with a thickness of 10 μm. The other side of the dual brightness enhancing film was coated with a UV curable adhesive resin to a thickness of 10 μm using a Mayer rod. It is adhered to the buffer film surface of the composite sheet prepared in the above-mentioned steps (D) and carried out UV curing to o...

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Abstract

The invention discloses an optical composite sheet and a display apparatus comprising the same. According to one realized embodiment, provided is an optical composite sheet, in which optical functional elements such as a prism sheet, a light diffusion layer and the like are combined and a light absorbing layer which selectively absorbs light of a specific wavelength band is inserted, so that optical performance and a color area can be improved than before. In particular, since the optical composite sheet satisfies a specific formula in the color transmittance in accordance with a wavelength measured for each viewing angle, the color deviation in accordance with the viewing angle can be effectively reduced.

Description

technical field [0001] Embodiments relate to an optical sheet capable of reducing color deviation according to viewing angles and a display device including the optical sheet. Background technique [0002] In the past, 40-inch TVs were the mainstream, but now many consumers will buy 50-inch or even 60-inch TVs. This size competition is over, and the resolution competition has begun. A year ago, full high-definition (FHD) TVs were a high-end model, but now ultra-high-definition (UHD) TVs are rapidly gaining popularity in the market. [0003] Recently, the field of display devices is evolving from competition for increasing area and high resolution to competition for colors. For this reason, competition to manufacture display devices with excellent colors has recently arisen. [0004] Liquid crystal displays (LCDs) display images using the optical properties of liquid crystals. Since the liquid crystal display panel displaying images is a non-light-emitting device that doe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/13357
CPCG02F1/1335G02F1/133504G02F1/133606G02F1/133607G02F1/133536G02F1/13362G02B6/0051G02B6/0053G02B6/0056G02B5/0278G02B5/0221G02B5/0226G02B5/22G02B5/003G02B5/045G02B5/02G02B5/3041G02B1/04G02F1/1336G02F1/133507
Inventor 曺圭中金兑勋崔熔在高载昊
Owner 爱思开迈克沃解决方案有限公司
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