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| Optical compensatory sheet |
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| Patterned polarization-rotating optical element and method of making the same, and 3D display |
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| Liquid crystal display device |
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Electro-optical device and method of fabricating same
| Details |
Inventors: Yamazaki, Shunpei; Koyama, Jun; Yamaguchi, Naoaki; Awane, Katunobu; Funada, Fumiaki; Yamamoto, Yoshitaka;
Assignee: Semiconductor Energy Laboratory Co., Ltd. (Kanagawa-ken, JP); Sharp Kabushiki Kaisha (Osaka, JP)
Primary Examiner: Sikes; William L.
Assistant Examiner: Nguyen; Tiep H.
Attorney, Agent or Firm: Fish & Richardson P.C.
An active matrix liquid crystal display having a high aperture ratio is provided. Retaining capacitors are created between a black matrix and pixel electrodes via a dielectric layer made from an organic resinous material or inorganic material. Those regions of the black matrix which cover TFTs are fully utilized. Therefore, wider area can be used to display an image than heretofore. In the present invention, the difference in relative dielectric constant between different dielectric layers is employed. Therefore, retaining capacitors can be created without the need to take account of parasitic capacitance. |
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DETAILED DESCRIPTION The present invention is intended to provide a technique for solving the foregoing problems of the prior art technique.
That is, it is an object of the present invention to provide a technique for fabricating pixel regions with a high aperture ratio.
The present invention provides a liquid crystal display having gate lines and data lines arranged in rows and columns on the same substrate, pixel electrodes disposed at the intersections of the gate lines and data lines, and TFTs connected with the pixel electrodes.
The liquid crystal display comprises a first interlayer dielectric film that covers the gate lines, a second interlayer dielectric film formed by LPD (liquid phase deposition) so as to cover the data lines, a black matrix formed over the TFTs via the second interlayer dielectric film, a third interlayer dielectric film formed by LPD so as to cover the black matrix, and pixel electrodes formed on the third interlayer dielectric film.
A retaining capacitance is created between the black matrix and each of the pixel electrodes via the third interlayer dielectric film.
The present invention also provides a liquid crystal display having gate lines and data lines arranged in rows and columns on the same substrate, pixel electrodes disposed at the intersections of the gate lines and data lines, and TFTs connected with the pixel electrodes.
The liquid crystal display comprises a first interlayer dielectric film that covers the gate lines, a second interlayer dielectric film formed by LPD (liquid phase deposition) so as to cover the data lines, a black matrix formed over the TFTs, gate lines, and data lines via the second interlayer dielectric film, a third interlayer dielectric film formed by LPD so as to cover the black matrix, and pixel electrodes formed on the third interlayer dielectric film.
A retaining capacitor is formed between the black matrix and each of the pixel electrodes via the third interlayer dielectric film.
The second interlayer dielectric film consists of one or more layers of an organic resinous material
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