ELECTRON EMITTING ELEMENT, ITS MANUFACTURE, DISPLAY ELEMENT AND ITS MANUFACTURE

    公开(公告)号:JP2000268701A

    公开(公告)日:2000-09-29

    申请号:JP6928599

    申请日:1999-03-15

    Applicant: TOSHIBA CORP

    Abstract: PROBLEM TO BE SOLVED: To provide a uniform display element in a large area with a long service life and high fineness capable of easily suppressing unevenness of the amount of emitted electrons and being driven at low voltage when many elements are formed with an electron emitting element using a fine particles emitter in a large area. SOLUTION: An electron emitting element has a substrate 1, a cathode wiring layer 2 formed on the substrate 1, a gate wiring layer 6, and an insulating layer 5 electrically insulating the cathode wiring layer 2 from the gate wiring layer 6, and is formed with a resistance layer 3 and an emitter layer 4 in a through hole piercing the gate wiring layer 6 and the insulating layer 5. The resistance layer 3 is formed by dispersing conductive fine particles 3b in a base material consisting of insulating fine particles 3a. The emitter layer 4 is formed of a fine particle material. The insulating layer on the first substrate formed with a cathode electrode line, the emitter layer, the insulating layer, and a gate electrode line in its order consists of a silicon dioxide film contains fluorine.

    DISPLAY DEVICE
    26.
    发明专利

    公开(公告)号:JPH10104651A

    公开(公告)日:1998-04-24

    申请号:JP25573996

    申请日:1996-09-27

    Applicant: TOSHIBA CORP

    Abstract: PROBLEM TO BE SOLVED: To improve driving characteristics of a driving circuit, to improve the reliability of the display device in spite of large capacity and high definition, and to obtain an image of high quality by making low the resistance of wires patterned on the electrode substrate of a driving circuit mounted directly on an electrode substrate. SOLUTION: A signal line driving IC 14 mounted on the electrode formation surface 10a of the electrode substrate is supplied with a signal from a reverse- surface wiring pattern 20 formed on the reverse surface 10b of the electrode substrate 10 through a 2nd through hole 22 to make small the resistance of the reverse-surface wiring pattern 10 and then a wiring pattern 18 formed on the electrode formation surface 10a without increasing a frame area B of the electrode substrate 20, thereby improving driving characteristics of the signal line driving IC and a gate line driving IC.

    CONDUCTIVE MOLD PACKAGE FOR SEMICONDUCTOR DEVICE

    公开(公告)号:JPH1092981A

    公开(公告)日:1998-04-10

    申请号:JP24505196

    申请日:1996-09-17

    Applicant: TOSHIBA CORP

    Abstract: PROBLEM TO BE SOLVED: To produce a conductive mold package for semiconductor device through simple process requiring a simple shield at low cost while preventing oscillation by filling the gap between a semiconductor chip and a substrate with a nonconductive resin layer and coating the semiconductor chip, on the side and the rear thereof, with a conductive resin layer. SOLUTION: A semiconductor chip 11 is flip chip mounted on an alumina board 13 on which wiring is formed. The gap between the HEMT chip 11 and the alumina board 13 is filled with a nonconductive resin 14, i.e., epoxy resin. Subsequently, the HEMT chip 11 is then coated, on the circumference thereof, with a conductive resin 15. It may be coated by potting or using a die 16. An epoxy based thermosetting resin mixed with 85-95wt.% of acicular silver powder having diameter of 20μm is employed as the conductive resin 15. According to the method, the process is simplified and the yield is increased while reducing the cost. Furthermore, problem of resonance can be eliminated by increasing the resonance frequency.

    SEMICONDUCTOR DEVICE AND MANUFACTURE THEREOF

    公开(公告)号:JPH1065057A

    公开(公告)日:1998-03-06

    申请号:JP21340996

    申请日:1996-08-13

    Applicant: TOSHIBA CORP

    Abstract: PROBLEM TO BE SOLVED: To mount a semiconductor chip with its face up and reduce the mounting area by using a semiconductor chip having bump electrodes formed on input/output terminals arranged at the marginal area of the chip and electrically connecting the bump electrode side faces to the wiring electrode surface on a board with solder bridges. SOLUTION: Input/output terminals 9 are formed at the marginal area of a base semiconductor chip 2 and bump electrodes 4 formed on the terminals 9. A semiconductor chip 3 mounted on the chip 2 is mounted on a mounting board 1 with a hybrid IC molded with a resin mold 13 and bump electrodes 4 electrically connected to wiring electrodes 11 near the electrodes 4 through bridges 5. The side faces of the electrodes 4 are flush with the side face of the base board 2 and solder bumps formed at the side faces are well connected. Thus it is possible to place the wiring electrodes 11 near round the chip 2 on the board 1 and reduce the mounting area.

    WIRING BOARD FOR HIGH-FREQUENCY SIGNAL AND SEMICONDUCTOR MODULE FOR HIGH-FREQUENCY SIGNAL USING IT

    公开(公告)号:JPH09172107A

    公开(公告)日:1997-06-30

    申请号:JP24052796

    申请日:1996-09-11

    Applicant: TOSHIBA CORP

    Abstract: PROBLEM TO BE SOLVED: To avoid the concentration of electric currents by protruding the upper end sections of signal lines laid in wiring forming grooves which are composed of recessed sections having cross sections representing continuous curved surfaces and formed on the surface of a dielectric layer formed on a substrate from the surface of the dielectric layer. SOLUTION: A ground layer 3 and a dielectric layer 4 are successively formed on a substrate 2. Signal lines 5 are buried in recessed sections which are formed on the surface of the dielectric layer 4 and have cross sections representing continuous curved surfaces at a depth of H2 and the end faces of the lines 5 are protruded from the surface of the dielectric layer to a height of H1 . That is the distances from the protruded front ends of the lines 5 to the bottoms of the recessed sections are represented by H(=H1 +H2 ) and the value of the H corresponds to the thickness of the signal lines 5. Since the signal lines 5 are brought into contact with the dielectric layer 4 on the curved surfaces only and no corner section exists in the contacting plane between the dielectric layer 4 and signal lines 5, the concentration of electric currents can be avoided.

    SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

    公开(公告)号:JPH09153520A

    公开(公告)日:1997-06-10

    申请号:JP31330595

    申请日:1995-11-30

    Applicant: TOSHIBA CORP

    Abstract: PROBLEM TO BE SOLVED: To improve the reliability of a flip-chip mounted semiconductor by improving the method of inspecting a semiconductor chip. SOLUTION: Through holes are formed on a thermosetting resin sheet 6 on a wiring pattern 7 to connect between a semiconductor chip 1 formed with bump electrodes 3 and the thermosetting resin sheet 6 formed with the wiring pattern 7 that is the same in the pattern of circuit wiring. Through the through holes, the bump electrodes 3 and the wiring pattern 7 are connected, using the wiring pattern 7 as the electrodes for inspection, the semiconductor chip 1 is inspected and the connecting electrodes 15 of a circuit wiring board 14 and the bump electrodes 3 are connected electrically and mechanically.

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