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1. WO2005099315 - ELECTRO-LUMINESCENCE ELEMENT

Publication Number WO/2005/099315
Publication Date 20.10.2005
International Application No. PCT/JP2005/006466
International Filing Date 01.04.2005
IPC
H05B 33/12 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
12Light sources with substantially two-dimensional radiating surfaces
H05B 33/24 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
12Light sources with substantially two-dimensional radiating surfaces
22characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
24of metallic reflective layers
H05B 33/26 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
12Light sources with substantially two-dimensional radiating surfaces
26characterised by the composition or arrangement of the conductive material used as an electrode
CPC
C09K 11/7731
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
08containing inorganic luminescent materials
77containing rare earth metals
7728containing europium
7729Chalcogenides
7731with alkaline earth metals
H01L 27/322
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
28including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
32with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes [OLED]
3206Multi-colour light emission
322using colour filters or colour changing media [CCM]
H01L 51/5206
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
52Details of devices
5203Electrodes
5206Anodes, i.e. with high work-function material
H01L 51/5271
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
52Details of devices
5262Arrangements for extracting light from the device
5271Reflective means
H01L 51/5284
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
52Details of devices
5281Arrangements for contrast improvement, e.g. preventing reflection of ambient light
5284comprising a light absorbing layer, e.g. black layer
H05B 33/14
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
12Light sources with substantially two-dimensional radiating surfaces
14characterised by the chemical or physical composition or the arrangement of the electroluminescent material ; , or by the simultaneous addition of the electroluminescent material in or onto the light source
Applicants
  • 松下東芝映像ディスプレイ株式会社 MATSUSHITA TOSHIBA PICTURE DISPLAY CO., LTD. [JP]/[JP] (AllExceptUS)
  • 渡辺寛敏 WATANABE, Hirotoshi (UsOnly)
  • 川崎正樹 KAWASAKI, Masaki (UsOnly)
Inventors
  • 渡辺寛敏 WATANABE, Hirotoshi
  • 川崎正樹 KAWASAKI, Masaki
Agents
  • 特許業務法人池内・佐藤アンドパートナーズ IKEUCHI SATO & PARTNER PATENT ATTORNEYS
Priority Data
2004-11451408.04.2004JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTRO-LUMINESCENCE ELEMENT
(FR) ÉLÉMENT À ÉLECTROLUMINESCENCE
(JA) エレクトロルミネッセンス素子
Abstract
(EN)
There is provided an EL element including a light emitting layer (1) and including color filter layers (4a-4c, 5a-5c) and a surface substrate (9) arranged at the light take-out side. The color filter layers (4a-4c, 5a-5c) is arranged between a transparent electrode (3) of the surface substrate side and the surface substrate (9) and includes three primary color emitting units and a light shielding layer (6) between the color emitting units. The side surface of the light shielding layer (6) or the color emitting units is covered by a metal reflection layer (7). Thus, diffused light can be reflected to the color emitting units, thereby effectively extracting light at the display surface side. Moreover, since the metal reflection layer is electrically connected to the transparent electrode, it is possible to reduce the electric resistance value of the transparent electrode. Thus, there is provided an EL element having an improved efficiency of the light take-out in the color filter layer.
(FR)
Il est fourni un élément électroluminescent comprenant une couche d'émission de lumière (1) et comprenant des couches de filtres de couleurs (4a à 4c, 5a à 5c) et un substrat de surface (9) disposés du côté d'émission de la lumière. Les couches de filtres de couleurs (4a à 4c, 5a à 5c) sont agencées entre une électrode transparente (3) du côté du substrat de surface et le substrat de surface (9), et elles comprennent les unités d'émission des trois couleurs primaires et une couche de protection à la lumière (6) entre les unités d'émission de couleur. La surface latérale de la couche de protection à la lumière (6) ou des unités d'émission de couleur est couverte par une couche de réflexion métallique (7). Donc, la lumière diffusée peut être réfléchie vers les unités d'émission de couleur, ce qui extrait ainsi efficacement la lumière du côté de la surface d'affichage. De plus, du fait que la couche de réflexion métallique est reliée électriquement à l'électrode transparente, il est possible de réduire la valeur de résistance électrique de l'électrode transparente. Ainsi, il est fourni un élément électroluminescent présentant une efficacité améliorée d'émission de lumière dans la couche des filtres de couleurs.
(JA)
 発光層(1)を含み、光取り出し側にカラーフィルター層(4a-4c,5a-5c)と表面基板(9)を含むEL素子において、前記カラーフィルター層(4a-4c,5a-5c)は、前記表面基板側の透明電極(3)から前記表面基板(9)までの間に存在し、3原色発光部と、前記各色発光部間に遮光層(6)を備え、前記遮光層(6)又は前記各色発光部の側面は金属反射層(7)で覆われている。これにより拡散光を各色発色部に反射させることができ、表示面側に効率よく光を取り出すことができる。また、前記金属反射層を前記透明電極と導通させているため、透明電極の電気的抵抗値を下げることができる。カラーフィルター層における光取り出し効率を高めたEL素子を提供する。
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