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1. 发明专利

JPH1145074A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH1145074A
公开(公告)日：1999-02-16
申请号：JP20049197
申请日：1997-07-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： OONAWA TOSHIO
IPC分类号： G02F1/133 , G09G3/36 , H04N5/66 , H04N9/30 , H04N9/64 , H04N9/69
摘要： PROBLEM TO BE SOLVED: To obtain an image with brightness approximately proportional to the brightness of a picked-up image and to obtain excellent image reproducibility by making γ value vary within a specific range in a region of a specific proportion or more of a whole gradation region. SOLUTION: In a gradation specified wherein brightness 1 is defined to correspond to a maximum of a gradation signal, γ value is arranged so that γ value may fall between γ=1.5 and γ=3.0 of a gradation-brightness characteristic of a liquid crystal display device to which RGB digital signals are inputted in a 60% or more of the whole gradation region. And in a reference voltage generation circuit of the liquid crystal display device, three kinds of ladder resister circuits 9-11 can be changed over by simultaneously changing over the ladder resistor switch 7 and the reference voltage change-over switches 8. The gradation-brightness characteristic thus obtained can be selected according to the image by a user, in order to clarify a gradation in the neighborhood of black and that in the neighborhood of white.

2. 发明专利

JPH07325009A LIGHTING INSPECTION APPARATUS FOR SCATTERING TYPE LIQUID CRYSTAL PANEL 失效
公开(公告)号：JPH07325009A
公开(公告)日：1995-12-12
申请号：JP12005594
申请日：1994-06-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKANISHI KUNIFUMI , NAKANO MASAAKI , TAKADA MITSUYUKI , MIFUKU HIDEFUMI , SHIMA MUTSUHIRO , OONAWA TOSHIO , OUCHIDA YASUSHI
IPC分类号： G01M11/00 , G02F1/13 , G02F1/137
摘要： PURPOSE:To provide an inspection apparatus for a scattering type liquid crystal panel which can be made compact, heighten the visibility of displayed images at the time of inspection, and carry out lighting inspection easily. CONSTITUTION:A lighting inspection apparatus for a scattering type liquid crystal panel is an apparatus composed of a supporting means 9 to support a liquid crystal panel 8 whose lighting is to be inspected, a signal applying means 103 to apply electric signals to picture elements of the liquid crystal panel, and light radiating means 13, 14 to radiate light rays to the liquid crystal panel. The light radiating means is composed of a flat plate conductor 13 and a light source 14 installed in the side part of the flat plate conductor 13, a light absorbing layer 18 is formed in one face of the flat plate conductor 13 while a gap being kept between them, and means 16, 19 to closely stick the other face of the flat plate conductor to the liquid crystal panel are installed.

3. 发明专利

JPH06317810A MATRIX WIRING BOARD 失效
公开(公告)号：JPH06317810A
公开(公告)日：1994-11-15
申请号：JP10646493
申请日：1993-05-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWATO TOMIO , NAKANISHI KUNIFUMI , TAKADA MITSUYUKI , OONAWA TOSHIO , NUMANO YOSHINORI , MATSUKAWA FUMIO
IPC分类号： G02F1/136 , G02F1/1368 , H01L21/3205 , H01L23/52 , H01L29/78 , H01L29/786 , H05K1/02 , H01L29/784
摘要： PURPOSE:To inspect the electrical characteristic while the ends of a matrix wiring are connected with a low-resistance wiring and to prevent the trouble such as the dielectric breakdown and the deterioration of an active device by arranging an appropriate element in the mid-way of the low-resistance wiring connecting the matrix wirings. CONSTITUTION:A TFT is formed at a cross between a gate signal wiring 101 and a source signal wiring 102. Inspection electrode terminals 103a and 113a on the gate side, inspection electrode terminals 104a and 114a on the source side and the low-resistance wirings (short ring) 105a and 105b and a transistor 106 for short-circuiting one ends of all the source signal wirings and one ends of all the gate signal wirings are provided. The source 106a and drain 106b of the transistor 106 are connected respectively to the low-resistance wirings 105b and 105a, the gate 106c is connected to one electrode of a switching capacity 107 with the other electrode grounded, and an electrode terminal 108 is connected to the node to charge the capacity 107.

4. 发明专利

JPH1138936A DISPLAY DEVICE 失效
公开(公告)号：JPH1138936A
公开(公告)日：1999-02-12
申请号：JP19108997
申请日：1997-07-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHINOHARA HIROSHI , OONAWA TOSHIO , TERASAWA TAKESHI , NISHIMURA MASARU
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a display device that can enhance convenience of users and that is small in dispersion of optical characteristics by making the gradation-vs.-luminance characteristic to be adjustable. SOLUTION: The device is provided with a gradation converting circuit 6, which includes a pixel circuit 1 of matrix arrangement that generates brightness in accordance with the gradation signal supplied from a row driving circuit 2 and converts the gradation of first image data inputted externally by a variable conversion characteristic to obtain a second image data. The row driving circuit 2 supplies gradation signals to the pixel circuit 1 using the second image data converted by this gradation converting circuit 6.

5. 发明专利

JPH10200116A THIN FILM TRANSISTOR AND LIQUID CRYSTAL DISPLAY USING THE SAME 失效
公开(公告)号：JPH10200116A
公开(公告)日：1998-07-31
申请号：JP8297
申请日：1997-01-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： OONAWA TOSHIO , KAWAMOTO AKIRA
IPC分类号： G02F1/136 , G02F1/1368 , H01L21/336 , H01L29/786
摘要： PROBLEM TO BE SOLVED: To obtain a TFT wherein a gate electrode, a source electrode and a drain electrode are formed with the same layer, and to obtain a liquid crystal display using the TFT as a guard resistance preventing conduction between the gate electrode and the source or drain electrode. SOLUTION: A floating gate electrode 4 is formed on a glass substrate 3, and a gate protective film 5 is formed on the floating gate electrode 4, moreover a semiconductor i layer 6 is formed on the gate protective film 5, and a semiconductor n layer 7 is formed on the semiconductor i layer 6, and a source and drain electrode 8 is formed on the semiconductor n layer 7, moreover a gate electrode 9 is formed on the gate protective film 5 on which the semiconductor i layer 6 is not formed.

6. 发明专利

JPH11202299A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH11202299A
公开(公告)日：1999-07-30
申请号：JP637698
申请日：1998-01-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： OONAWA TOSHIO
IPC分类号： G02F1/136 , G02F1/133 , G02F1/1368 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display device in which no afterimage is left. SOLUTION: Based on a reference voltage outputted by a reference voltage generating circuit, a source driver IC 2 supplies a gradation signal corresponding to the gradation to be displayed by a display part to a switching element, but the reference voltage generating circuit is connected between first and second potential supply sources and has plural ladder resistors 7, 8 and 9 constituted so as to output the reference voltages from the respective nodes of plural serially connected resistors 4. In this case, one of plural ladder resistors 7, 8 and 9 is selected by switches 5 and 6. Thus, the reference voltage is varied and the contrast of the display part is changed.

7. 发明专利

JP2000029003A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2000029003A
公开(公告)日：2000-01-28
申请号：JP19218098
申请日：1998-07-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： OONAWA TOSHIO , KAWABE SHIN , KAWATO TOMIO
IPC分类号： G02F1/1333 , G09F9/00
摘要： PROBLEM TO BE SOLVED: To prevent a liquid crystal panel from being damaged by impact and to obtain high reliability by making a holding part abut on the liquid crystal panel and relaxing the stress of a stress concentration part. SOLUTION: The holding part 10a is provided along the end face of a glass substrate constituting the liquid crystal panel and formed so that the thickness (width) of the holding part 10a in a direction where the impact is imposed (X and Y directions) may be decreased from the corner part to the end of the holding part 10a. Even when the impact in the X and Y directions is imposed on the liquid crystal panel and the liquid crystal panel abuts on the holding part 10a, the rigidity of the holding part 10a is gradually decreased toward the end side from the corner part of the holding part 10a. Therefore, the change of imposed force is small between the part of the end face of the glass substrate abutting on the holding part 10a and the part thereof not abutting on the holding part 10a, and stress concentration in the glass substrate near the end of the holding part 10a is moderated and the glass substrate (liquid crystal panel) is prevented from being damaged at such a part.

8. 发明专利

JPH06163759A SEMICONDUCTOR-ELEMENT MOUNTED DEVICE 失效
公开(公告)号：JPH06163759A
公开(公告)日：1994-06-10
申请号：JP31469492
申请日：1992-11-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMA MUTSUHIRO , OONAWA TOSHIO , MIFUKU HIDEFUMI , TAKADA MITSUYUKI
IPC分类号： H01L23/34
摘要： PURPOSE:To obtain a semiconductor-element mounted device wherein a signal can be input to, and output from, a semiconductor element accurately and at high speed by a method wherein the distance between a lead and a cooling member is adjusted and their mutual electromagnetic coupling is made proper. CONSTITUTION:A cooling member 10 is installed so as to be close to electric connection leads 4, it is connected to a node whose potential is stable, e.g. to a grounding layer, and the distance between the cooling member 10 and the leads 4 is adjusted so as to be a value corresponding to, e.g. the diameter of each lead 4. Their mutual electromagnetic coupling is set to be nearly the same degree as the electromagnetic coupling between the leads 4 and a circuit board 5, a reflecting noise due to the mismatching of a characteristic impedance between the leads 4 and the circuit board 5 is reduced, a surface area can be made large as compared with a cooling member in conventional cases, and the cooling effect of a semiconductor element 1 is enhanced. Consequently, the electromagnetic coupling between circuit boards can be reduced, and, as a result, a signal can be input to, and output from, the semiconductor element.

9. 发明专利

JPH0596388A LASER BEAM MACHINE 失效
公开(公告)号：JPH0596388A
公开(公告)日：1993-04-20
申请号：JP25806491
申请日：1991-10-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： OONAWA TOSHIO , MIFUKU HIDEFUMI , TAKADA MITSUYUKI
IPC分类号： B23K26/00 , B23K26/03 , H01S3/00 , H01S3/101
摘要： PURPOSE:To provide the laser beam machine of the simple composition, the inexpensive price and the high a precision for the material to be machined of multi layers structure. CONSTITUTION:A laser oscillator 1A emitting a main pulse laser beam, a light beam dividing unit 11 which divides the main pulse laser beam to a 1st pulse laser beam and a 2nd pulse laser beam, a light beam by-path route 15 which is supplied with the 2nd pulse laser beam and delays the 2nd pulse laser beam against the 1st pulse laser beam, and measuring means 3, 9, 16 which measures the strength of the 2nd pulse laser beam reflected from the material to be machined 4 which is irradiated with the 2nd pulse laser beam after being irradiated with the 1st pulse laser beam are provided.

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