LCD with increased pixel opening sizes

Details LCD with increased pixel opening sizes LCD with increased pixel opening sizes

1997-11-14

1999-07-06

Saadat, Mahshid

Active solid-state devices (e.g., transistors, solid-state diode

Non-single crystal, or recrystallized, semiconductor...

Amorphous semiconductor material

257 52, 257 57, 349 56, 349 38, H01L 2904, H01L 31036, H01L 310376, H01L 3120

Patent

active

059200847

ABSTRACT:
A liquid crystal display having an increased pixel aperture ratio is disclosed along with a method of making same. An array of a-Si TFTs is deposited on a transparent substrate. Subsequently, an organic insulating layer (e.g. Benzocyclobutene) and a corresponding array of pixel electrodes are deposited over the TFT array so that the pixel electrodes overlap the display address lines thereby increasing the display's pixel aperture ratio. The low dielectric constant .epsilon. (e.g. about 2.7) and relatively high thickness (e.g. greater than about 1.5 .mu.m) of the insulating layer reduce the pixel electrode-address line parasitic capacitance C.sub.PL in the overlap areas thereby reducing cross-talk (or capacitive coupling) in the display. In sum, an increased pixel aperture ratio is achieved without sacrificing display performance.

REFERENCES:
patent: 4980002 (1990-12-01), Dzarnoski, Jr. et al.
patent: 5003356 (1991-03-01), Wakai et al.
patent: 5055899 (1991-10-01), Wakai et al.
patent: 5182620 (1993-01-01), Shimada et al.
patent: 5246782 (1993-09-01), Kennedy et al.
patent: 5287208 (1994-02-01), Shimoto et al.
patent: 5302987 (1994-04-01), Kanemori et al.
patent: 5364547 (1994-11-01), Babb et al.
patent: 5409777 (1995-04-01), Kennedy et al.
patent: 5414278 (1995-05-01), Kobayashi et al.
patent: 5414547 (1995-05-01), Matsuo et al.
patent: 5419991 (1995-05-01), Segawa
patent: 5422293 (1995-06-01), Konya
patent: 5426523 (1995-06-01), Shimada et al.
patent: 5446562 (1995-08-01), Sato
patent: 5453857 (1995-09-01), Takahara
patent: 5457553 (1995-10-01), Mori
patent: 5459596 (1995-10-01), Ueda et al.
patent: 5463230 (1995-10-01), Negoto et al.
patent: 5463484 (1995-10-01), Brody
patent: 5483366 (1996-01-01), Atherton
patent: 5528209 (1996-06-01), Macdonald et al.
patent: 5682211 (1997-10-01), Yao et al.
"Benzocyclobutene as a Planarization Resin for Flat Planel Displays" by Perettie, et. al., SPIE vol. 1665 Crystal Materials, Devices, and Applications, 1992.
"A Multi-Level High Density Interconnect Process Designed & Developed for Manufacturability" by Finchem, et. al., Dec. 1994.
"Reactive Ion Etching of Benzocyclobutene Using A Silicon Nitride Dielectric Etch Mask" by Schier, J. Electrochem Soc., vol. 142, No. 9, Sep. 1995.
"High Density Multilayer Substrate Using Benzocyclobutene Dielectric" by Shimoto, et. al., IMC 1992 Proceedings, Yokohama, Jun. 3-5, 1992.
"Optimisation of very Small Pitch Active Matrix LCD For Projection" by Vignolle, et. al., IEEE, 1991 no month.
"A High-Aperture-Ratio 3 in.--Diagonal VGA a-Si Light Valve with Pixel/Data and Pixel/Gate Lines Overlapping" by Sakamoto, et. al. SID 1996 Digest no month.
"High Aperture and Fault-Tolerant Pixel Structure for TFT-LCDS" by Kim, et. al., SID 1995 Digest no month.
"A 6.4--in--Diagonal Color TFT-LCD Module Suitable for Personal Information Tools" by Takeda et al, SID 94 Digest no month.
"Invited Address: High Aperture TFT Array Structures" by Suzuki, SID 94 Digest no month.
"A High-Aperture-Ratio TFT-LCD with a Shield-Electrode Structures" by UEDA et al, SID 93 Digest no month.

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