公开(公告)号：KR1020120057469A

公开(公告)日：2012-06-05

申请号：KR1020100119211

申请日：2010-11-26

Applicant: 도레이첨단소재 주식회사

Inventor： 김재걸 ,  김직수 ,  이정우 ,  엄태수 ,  전해상

IPC: G02B5/02 ,  F21V8/00 ,  G02F1/1335

CPC classification number: G02B5/0226 ,  G02B6/0025 ,  G02B2006/12071 ,  G02F1/133524

Abstract: PURPOSE: An optical diffusing sheet for an LCD backlight unit is provided to prevent wear and scratch due to friction and flow between sheets when an LCD backlight moves after assembly. CONSTITUTION: An optical diffusing sheet for an LCD backlight unit comprises a transparent polyester base film(3) and an optical diffusing layer. The base film is coated by using a coating solution in which a coating liquid containing 0.5-1.0 wt.% of slip property material is added in a coating liquid mixing binder resin and different diameter particles.

Abstract translation: 目的：提供一种用于LCD背光单元的光漫射板，用于防止LCD背光在组装后移动时由于纸张之间的摩擦和流动而造成的磨损和划痕。 构成：用于LCD背光单元的光漫射片包括透明聚酯基膜（3）和光漫射层。 通过使用在涂布液混合粘合剂树脂和不同直径的颗粒中添加含有0.5-1.0重量％的滑动性材料的涂布液的涂布溶液涂布基膜。

公开(公告)号：KR1020150048945A

公开(公告)日：2015-05-11

申请号：KR1020130128374

申请日：2013-10-28

Applicant: 도레이첨단소재 주식회사

Inventor： 서기봉 ,  이병국 ,  송정한 ,  김재걸

IPC: G02B5/02 ,  G02F1/13357

CPC classification number: G02B5/0226 ,  F21Y2115/10 ,  G02F1/133504 ,  G02F1/1336

Abstract: 본발명은단층의큰 사이즈입자층과큰 입자사이에다층으로작은사이즈입자층이도포됨으로써엘이디(LED) 램프에서나온빛을골고루확산및 차폐를시켜엘이디램프를사용한엘시디(LCD) 백라이트유트의핫 스팟(Hot spot) 발생을막아주고, 휘도와시야각을향상시키는기능을가지게한, 엘시디백라이트유니트용광확산시트및 그제조방법에관한것으로, 상기한본 발명의백라이트유니트용광확산시트는투명한폴리에스테르기재필름과, 상기필름의적어도일면에형성된광확산층으로되고, 여기서상기광확산층은바인더수지와상호다른입경을갖는입자의혼합액을도포함에의해상기입자가바인더수지사이에서다층으로형성된것임을특징으로한다. 상기와같이구성되는본 발명의백라이트유니트용광확산시트는바인더수지와다른입경을갖는입자의혼합물을도포함에의해기재필름의표면에다른입경을갖는작은입자가다층으로형성되고, 중간중간에입경이큰 입자가단층으로형성이되도록하여, 상기입자사이를골고루채운바인더수지로인해휘도와차폐, 시야각을만족하는효과를제공하므로상기한종래의문제점을해결한다.

Abstract translation: 本发明涉及用于背光单元的光扩散片及其制造方法，其功能可以通过屏蔽和扩散从LED灯发出的光来防止在LED背光单元使用LED灯产生热点， 小尺寸颗粒层，在单层的大尺寸颗粒层与大颗粒之间具有多层，并提高亮度和视角。 用于背光单元的光漫射片包括透明聚酯基底膜和形成在膜的至少一个表面上的光扩散层。 通过从粘合剂树脂喷射具有不同颗粒的颗粒的混合液体，将光扩散层形成为多层。 用于背光单元的光漫射片通过在基片的表面上形成具有不同粒子的小颗粒，通过从粘合剂树脂喷射具有不同粒子的颗粒的混合材料来解决所存在的问题，形成层 通过提供满足亮度，屏蔽度和与填充在颗粒之间的粘合剂树脂的视角的效果，间隔中的大颗粒。

公开(公告)号：KR1020130053489A

公开(公告)日：2013-05-24

申请号：KR1020110118142

申请日：2011-11-14

Applicant: 도레이첨단소재 주식회사

Inventor： 전해상 ,  엄태수 ,  송정한 ,  김재걸

IPC: G02B5/02 ,  G02F1/13357

CPC classification number: G02B5/0268 ,  G02B5/0226 ,  G02B5/0242 ,  G02B6/004 ,  G02F1/133606

Abstract: PURPOSE: A light diffusion sheet for an LCD back light unit is provided to prevent the fault generation by suppressing the hot spot generation in the back light unit using an LED lamp by offering the diffusion and shielding function of the light to the light diffusion sheet for an LCD back light unit using the LED lamp. CONSTITUTION: A light diffusion sheet for a back light unit comprises a transparent polyester substrate film(3). The light diffusion sheet for a back light unit becomes a light diffusing layer formed in one side of film, and the light diffusing layer is formed in a plurality of layer of between a binder resin(1) by coating the particle(2) having different diameter with the binder resin.

Abstract translation: 目的：提供一种用于LCD背光单元的光漫射片，以通过向光扩散片提供光的漫射和屏蔽功能，通过使用LED灯抑制背光单元中的热点产生来防止故障产生 一个使用LED灯的LCD背光单元。 构成：背光单元的光漫射片包括透明聚酯基片（3）。 用于背光单元的光扩散片成为在膜的一侧形成的光漫射层，并且光漫射层通过涂覆具有不同的粒子（2）而形成在粘合剂树脂（1）之间的多层中 直径与粘合剂树脂。

公开(公告)号：KR1020140034977A

公开(公告)日：2014-03-21

申请号：KR1020120100363

申请日：2012-09-11

Applicant: 도레이첨단소재 주식회사

Inventor： 서기봉 ,  엄태수 ,  송정한 ,  김재걸

IPC: G02B5/02 ,  G02F1/13357

CPC classification number: G02F1/133504 ,  G02B5/0226 ,  G02B6/0051 ,  G02F1/133606

Abstract: The present invention relates to a light diffusion sheet for a thin backlight unit having a shielding function capable of preventing hot spots on an LCD backlight unit using LED lamps by regularly diffusing or shielding light from the LED lamps by coating fine particles with a thin film and a manufacturing method thereof. The light diffusion sheet for a thin backlight unit given in the present invention includes: a transparent polyester base film; and a light diffusion layer formed on at least one surface of the film. The light diffusion layer is formed by applying binder resin and a mixture of particles having different diameters and making the particles form a single layer in the binder resin. For the light diffusion sheet for a thin backlight unit described above, binder resin and a mixture of particles having different diameters are applied on the surface of the base film to form a single layer of particles having different diameters. As a result, since the thickness of coating is reduced by 5-7μm compared to the existing light diffusion sheet, the present invention is able to enhance brightness and shielding performance, thereby resolving the problem of the existing light diffusion sheet that the coating layer is too thick to be used for a thin backlight unit.

Abstract translation: 本发明涉及一种具有屏蔽功能的薄型背光单元的光扩散片，该屏蔽功能能够通过使用LED灯来规则地扩散或屏蔽来自LED灯的光，通过用薄膜涂覆微粒来防止LCD背光单元上的热点， 其制造方法。 本发明中给出的薄背光单元用光扩散片包括：透明聚酯基膜; 以及形成在所述膜的至少一个表面上的光扩散层。 通过施加粘合剂树脂和具有不同直径的颗粒的混合物并使颗粒在粘合剂树脂中形成单层而形成光扩散层。 对于上述薄背光单元的光扩散片，将粘合剂树脂和具有不同直径的颗粒的混合物施加在基膜的表面上以形成具有不同直径的单层颗粒。 结果，由于与现有的光漫射片相比，涂层的厚度减小了5-7μm，本发明能够提高亮度和屏蔽性能，从而解决现有的光扩散片的问题，即涂层是 太厚，不能用于薄背光单元。