Method for fabricating a thin film transistor with silicon oxynitride film and silicon nitride channel passivation film for preventing a back channel effect
    1.
    发明授权
    Method for fabricating a thin film transistor with silicon oxynitride film and silicon nitride channel passivation film for preventing a back channel effect 失效
    用于制造具有氧氮化硅膜的薄膜晶体管和用于防止反向沟道效应的氮化硅沟道钝化膜的方法

    公开(公告)号:US6436742B2

    公开(公告)日:2002-08-20

    申请号:US87136301

    申请日:2001-05-31

    Applicant: IBM

    CPC classification number: H01L29/66765 H01L29/78609 H01L29/78669

    Abstract: The present invention provides a thin film transistor (TFT) and a fabrication method thereof which suppresses the back channel effects in which a leakage current flows between a source electrode and a drain electrode at times during a turn off state of the TFT. A thin silicon oxynitride film 90 having a thickness preferably equal to or less than 50 Å is formed between an amorphous silicon layer 40 and a channel passivation film 50 (a silicon nitride film) above a back channel region 100 between a source electrode and a drain electrode of an inverted staggered type TFT to cause Si-O bonds to exist in an upper interface of the amorphous silicon layer. The Si-O bonds increase the Density of States in the back channel region and has an effect for suppressing the leakage current through the back channel region 100 at times during the turn off of the TFT.

    Abstract translation: 本发明提供一种薄膜晶体管(TFT)及其制造方法,其抑制在TFT的关断状态期间的时间期间漏电流在源极和漏电极之间流动的反向沟道效应。 在非晶硅层40和源电极与漏极之间的背沟道区域100上方的沟道钝化膜50(氮化硅膜)之间形成厚度优选等于或小于50埃的薄氮氧化硅膜90。 反向交错型TFT的电极,使得Si-O键存在于非晶硅层的上界面。 Si-O键增加背沟道区域中的状态密度,并且具有在TFT关断期间的时间抑制通过背沟道区域100的漏电流的效果。

    2.
    发明专利
    未知

    公开(公告)号:DE60108834T2

    公开(公告)日:2006-01-19

    申请号:DE60108834

    申请日:2001-11-30

    Applicant: IBM

    Abstract: A pixel cell has a thin film transistor structure formed on a substrate. A signal conductor is patterned on the thin film transistor structure, and a first patterned layer of a transparent conductive material covers the signal conductor. The first patterned layer provides a pattern employed in etching a channel region of the thin film transistor structure. A dielectric layer is formed over the pixel cell and includes a via hole down to the first patterned layer of the transparent conductive material. A second layer of transparent conductive material extends through the via hole to contact the first patterned layer wherein the second layer is self-aligned to the transistor structure.

    THIN FILM TRANSISTORS WITH SELF-ALIGNED TRANSPARENT PIXEL ELECTRODE

    公开(公告)号:CA2358579C

    公开(公告)日:2006-08-29

    申请号:CA2358579

    申请日:2001-10-05

    Applicant: IBM

    Abstract: A pixel cell has a thin film transistor structure formed on a substrate. A signal conductor is patterned on the thin film transistor structure, and a first patterned layer of a transparent conductive material covers the signal conductor. The first patterned layer provides a pattern employed in etching a channel region of the thin film transistor structure. A dielectric layer is formed over the pixel cell and includes a via hole dow n to the first patterned layer of the transparent conductive material. A second layer of transparent conductive material extends through the via hole to contact the first patterned layer wherein the second layer is self-aligned to the transistor structure.

    DISPLAY DEVICE, LIQUID CRYSTAL DISPLAY PANEL, LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR DRIVING LIQUID CRYSTAL DISPLAY DEVICE

    公开(公告)号:JP2001282201A

    公开(公告)日:2001-10-12

    申请号:JP2000099100

    申请日:2000-03-31

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide a liquid crystal display device which suppresses the writing deficiency of voltage to pixels. SOLUTION: Thin-film transistors(TFTs) 10b to which scanning signals are supplied across gate lines 40 shown in Figure n-1 go on. The display signals supplied to signal line 30 shown in Figure m-1 are selected and the voltage is impressed, i.e., written to display electrodes 20 of pixels Pn. Next, the TFTs 10a supplied with the scanning signals across the gate lines 40 turn on. The display signals supplied to the signal line 30 shown in Figure m are then selected and the voltage is impressed, i.e., written to the display electrodes 20 of the pixels Pn. Namely, the structure in which the voltage is first written across the TFTs 10b in the display electrodes 20 of the pixels Pn and thereafter the voltage is written across the TFTs 10a is adopted.

    METHOD FOR FORMING TRANSPARENT CONDUCTIVE FILM BY USING CHEMICALLY AMPLIFIED RESIST

    公开(公告)号:CA2351568C

    公开(公告)日:2004-04-27

    申请号:CA2351568

    申请日:1999-12-01

    Applicant: IBM

    Abstract: To provide a process for patterning an ITO film, which is capable of preventing, for patterning an Indium-Tin-Oxide (ITO) film by using a chemically amplified resist, resist peeling or reduced adhesion even if the ITO film is exposed to a white light after resist development. An amorphous ITO film is first formed on a substrate, and a negative chemically amplified resist is directly provided on the film, exposed and. developed. In a resultant structure having a resist pattern on the amorphous ITO film, even if exposed to a white light, no resist peeling or no reduced adhesion occurs, and thus satisfactory visual inspection can be performed without adversely affecting subsequent steps. For the structure determined as a good product by visual inspection, the amorphous ITO film is etched through the resist pattern used as a mask, the resist pattern is removed, and then by heating the amorphous ITO film at the ITO crystallization temperature or higher, the crystallized ITO pattern having chemical resistance and good electrical conductivity can he obtained.

    METHOD FOR FORMING TRANSPARENT CONDUCTIVE FILM BY USING CHEMICALLY AMPLIFIED RESIST

    公开(公告)号:CA2351568A1

    公开(公告)日:2000-06-15

    申请号:CA2351568

    申请日:1999-12-01

    Applicant: IBM

    Abstract: A method for patterning an indium-tin-oxide (ITO) film by using a chemically amplified resist, causing no resist separation nor adhesion degradation even if the ITO film is exposed to white light after the resist development. An amorphous ITO film is formed on a wafer. A negative chemically amplified resist is applied directly to the ITO film, and the resist film is exposed a nd developed. The structure having a resist pattern on the amorphous ITO film i s free from resist separation and adhesion degradation even if the resist pattern is exposed to white light, and therefore the later manufacturing ste ps are not adversely affected, enabling proper visual inspection. After the structure is judged to be acceptable at the visual inspection, the amorphous ITO film is etched using the resist pattern as a mask, and then the resist pattern is removed. The ITO film is heated over the crystallization temperature of the ITO to form a crystallized ITO pattern having a chemical- resistance and a good electrical conductivity.

    ELECTRONIC DEVICE AND INFORMATION DISPLAY METHOD FOR THE ELECTRONIC DEVICE

    公开(公告)号:JP2002312104A

    公开(公告)日:2002-10-25

    申请号:JP2001106211

    申请日:2001-04-04

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To make a user efficiently and accurately understand information the operation member of which the user should operate in a current process, in a laptop personal computer 25. SOLUTION: An electrophoresis display 10 is mounted on a housing surface of the laptop personal computer 25. When an event requiring the user to operate an operation member occurs, an operation member and operation information corresponding to the event are searched, and the searched operation information is displayed on a part of the electrophoresis display 10 adjacent to the searched operation member. For example, if a termination switch 69 is located at an edge in an outer surface side of a cover 28, information prompting to operate the termination switch 69 is displayed at a part of the electrophoresis display 10 in the vicinity of the termination switch 69 for the event of terminating Windows (CR).

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