(19)
(11) EP 1 324 109 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION

(48) Corrigendum issued on:
15.10.2003 Bulletin 2003/42

(43) Date of publication:
02.07.2003 Bulletin 2003/27

(21) Application number: 02259009.5

(22) Date of filing: 30.12.2002
(51) International Patent Classification (IPC)7: G02F 1/1343, G02F 1/1335, G02F 1/1362, H01L 27/15
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 28.12.2001 JP 2001400996

(71) Applicant: Sanyo Electric Co., Ltd.
Moriguchi-shi, Osaka (JP)

(72) Inventors:
  • Inoue, Kazuhiro
    Motosu-gun, Gifu (JP)
  • Koma, Norio
    Motosu-gun, Gifu (JP)
  • Ogawa, Shinji
    Ohgaki-Shi, Gifu (JP)
  • Yamashita, Tohru
    Anpachi-gun, Gifu (JP)
  • Oda, Nobuhiko
    Hashima-Shi, Gifu (JP)
  • Ishida, Satoshi
    Ohgaki-Shi, Gifu (JP)
  • Yamada, Tsutomu
    Motosu-Gun, Gifu (JP)

(74) Representative: Cross, Rupert Edward Blount et al
BOULT WADE TENNANT, Verulam Gardens 70 Gray's Inn Road
London WC1X 8BT
London WC1X 8BT (GB)

   


(54) Display device and manufacturing method therefor


(57) On a first substrate (100), a TFT (110) which is a switching element is provided for each pixel, and above an insulating film (38) covering this TFT (110), a reflective layer (44) which is insulated from the TFT and which reflects light entering through a second substrate (200) and transmitting through a second electrode (250) made of ITO is formed. Further, a first electrode (50) having a work function similar to that of the second electrode (250) and made of a transparent conductive material such as ITO or IZO is formed closer to a liquid crystal layer (300) than the reflective layer (44), and this first electrode (50) is connected with the TFT (110). With this configuration, the liquid crystal layer can be symmetrically AC driven without flicker by the first and second electrodes. A reliable connection between the first electrode (50) and the TFT (110) is provided through a connection metal layer (42) made of a refractory metal, such as Mo, Ti or Cr. The electrode configuration may also be applied to a reflective electroluminescent (EL) display device.