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    • 45. 发明申请
    • ORGANIC LIGHT EMITTING DEVICE AND MATERIALS FOR USE IN SAME
    • US20130306962A1
    • 2013-11-21
    • US13995276
    • 2011-02-11
    • Hitoshi YamamotoMichael S. WeaverJulia J. BrownKazuki NishimuraToshihiro IwakumaKei Yoshida
    • Hitoshi YamamotoMichael S. WeaverJulia J. BrownKazuki NishimuraToshihiro IwakumaKei Yoshida
    • H01L51/50
    • H01L51/5028H01L51/0067H01L51/0072H01L51/0085H01L51/5012
    • The OLEDs of the present invention are characterized by providing an organic thin film layer comprising a single layer or plural layers between a cathode and an anode, wherein the organic thin film layer comprises at least one organic light emitting layer, wherein at least one light emitting layer comprises at least one host material and at least one phosphorescent emitter material, wherein the host material comprises a substituted or unsubstituted hydrocarbon compound represented by the formula (1) or (2): (Cz-)nA  (1) Cz(-A)m  (2) wherein Cz represents a substituted or unsubstituted arylcarbazolyl group or carbazolylalkylene group, A represents a group represented by the following general formula (3): (M)p-(L)q-(M′)r  (3) wherein M and M′ each independently represent a heteroaromatic ring having 2 to 40 carbon atoms and nitrogen atom and forming a substituted or unsubstituted ring, M and M′ may represent a same ring or different rings, L represents a single bond, a substituted or unsubstituted aryl group or arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted cycloalkylene group having 5 to 30 carbon atoms or a substituted or unsubstituted heteroaromatic ring having 2 to 30 carbon atoms, p represents an integer of 0 to 2, q represents an integer of 1 or 2, r represents an integer of 0 to 2, and p+r represents an integer of 1 or greater; and n and m each represent an integer of 1 to 3; and the phosphorescent emitter material comprises a phosphorescent organometallic complex having a substituted chemical structure represented by one of the following partial chemical structures represented by the formula: LL′L″M wherein M is a metal that forms octahedral complexes, L, L′, L″ are equivalent or inequivalent bidentate ligands wherein each L comprises a substituted or unsubstituted phenylpyridine ligand coordinated to M through an sp2 hybridized carbon and N; and one of L, L′ and L″ is inequivalent to at least one of the other two.
    • 47. 发明授权
    • Reflection type color liquid crystal display device having sub-pixels for increasing luminance, and a light scattering film including color filters for the sub-pixels and manufacturing method thereof
    • 具有用于增加亮度的子像素的反射型彩色液晶显示装置和包括用于子像素的滤色器的光散射膜及其制造方法
    • US06950156B1
    • 2005-09-27
    • US09743837
    • 2000-05-12
    • Kei Yoshida
    • Kei Yoshida
    • G09F9/00G02B5/02G02F1/1335
    • G02F1/133514G02F1/133504G02F1/133553
    • A reflective color liquid crystal display device capable of increasing the luminance of display without decreasing color purity. The display device displays a color image formed based on unit pixels each of which has sub-pixels corresponding to primary colors by using extraneous light, which has a liquid crystal layer varying a state of light transmitted therethrough, a reflection layer reflecting light which is incident thereon, a transparent electrode layer and a pixel electrode layer for applying electric field to the liquid crystal layer for each of the sub-pixels in accordance with an image to be displayed, a color filter layer having portions that perform coloring of the primary colors for the light to be transmitted (or the light having transmitted) through the liquid crystal layer in correspondence with the sub-pixels. The unit pixel also has a sub-pixel for increasing luminance, the additional portion transmitting light components of predetermined wavelengths from the light to be transmitted (or the light having transmitted) through the liquid crystal layer.
    • 一种能够在不降低色纯度的情况下提高显示亮度的反射型彩色液晶显示装置。 显示装置通过使用具有改变透过其的光的状态的液晶层的外部光,显示基于具有与原色相对应的子像素的单位像素形成的彩色图像,反射入射的光的反射层 根据要显示的图像,透明电极层和用于对每个子像素的液晶层施加电场的像素电极层,具有对原色进行着色的部分的滤色器层 待透射的光(或透射的光)通过与子像素对应的液晶层。 单位像素还具有用于增加亮度的子像素,附加部分从要透射的光(或透射的光)通过液晶层透射预定波长的光分量。