公开(公告)号：JP2005189870A

公开(公告)日：2005-07-14

申请号：JP2005018154

申请日：2005-01-26

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： MANABE MASUMI ,  SHOJI MASAHITO ,  TANAKA YASUHARU ,  ISHIKAWA MASAHITO ,  FUKUOKA NOBUKO ,  NINOMIYA TOSHIHIRO ,  OYAMA TAKESHI ,  YOSHIDA NORIHIRO ,  HADO HITOSHI

IPC: G02F1/139 ,  G02F1/13363

Abstract: PROBLEM TO BE SOLVED: To achieve a wider visual field angle of an liquid crystal electrooptical apparatus optimum for an OCB mode of a normally white mode display and its analogous mode. SOLUTION: In the liquid crystal electrooptical apparatus 1 having a liquid crystal cell 10 having a liquid crystal layer 13 indicating bend orientation and at least one optically anisotropic element 30, when the ratio M of the retardation in the intra-surface direction of the optically anisotropic element is defined as M=(ΔnLC)×(dLC)/(ndx-ndy), the liquid crystal electrooptical apparatus satisfies 7.5 COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：为了实现对于常白模式显示器的OCB模式和其类似模式最佳的液晶电光装置的更宽的视场角。 解决方案：在具有液晶层13的液晶电池10具有指示弯曲取向的液晶电光装置1和至少一个光学各向异性元件30中的情况下，当表面内方向的相位差的比M 光学各向异性元件被定义为M =（ΔnLC）×（dLC）/（ndx-ndy），液晶电光装置满足7.5

公开(公告)号：JPH10307305A

公开(公告)日：1998-11-17

申请号：JP4239198

申请日：1998-02-24

Applicant: TOSHIBA CORP

Inventor： KENMOCHI MASAHITO ,  SHOJI MASAHITO

IPC: G02F1/1333 ,  G02F1/1343 ,  G02F1/136 ,  G02F1/1368 ,  H01L21/28

Abstract: PROBLEM TO BE SOLVED: To obtain an array substrate having interlayer insulating films in which cutting in steps of conductive layers in a contact hole part is prevented, by forming a second interlayer insulating layer to have an opening penetrating to the surface of a first conductive layer and forming a second conductive layer to be connected to the first conductive layer through the opening. SOLUTION: An opening 18a is formed by patterning a second interlayer insulating layer 18. The size of the opening 18a is important for the relation of the opening formed in the first interlayer insulating layer 16. Then the substrate is heat treated to cause thermal shrinkage of the second interlayer insulating layer 18. The upper part of the opening widens to form a contact hole (C) having the inner face in a loose slope and a smoothly rounded upper edge. Further, a second conductive layer 20 is deposited. The conductive layer 20 is connected to the first conductive layer 14 through the contact hole (C). Since the contact hole (C) has a rounded edge of the opening and the loose slope of the inner face, no cutting in the steps of layers is caused.

公开(公告)号：JPH09325340A

公开(公告)日：1997-12-16

申请号：JP14550396

申请日：1996-06-07

Applicant: TOSHIBA CORP

Inventor： OYAMA TAKESHI ,  FUKUOKA NOBUKO ,  YOSHIDA NORIHIRO ,  NINOMIYA TOSHIHIRO ,  OKAMOTO MASUMI ,  ISHIKAWA MASAHITO ,  TANAKA YASUHARU ,  HADO HITOSHI ,  SHOJI MASAHITO

IPC: G02F1/1337 ,  G02F1/1343

Abstract: PROBLEM TO BE SOLVED: To obtain a moving picture of excellent display quality by making the visual field wide and operation fast as to the liquid crystal display element which has high contrast and superior gradations and shock resistance and is low in driving voltage. SOLUTION: On an array substrate 12, a common electrode 18 and pixel electrodes 27 are formed, and liquid crystal molecules 14a are switched with a lateral electric field which is parallel to the array substrate 12 to obtain a wide field angle; and an orientation film is processed for circular orientation as shown by 32a-32c; and the liquid crystal molecules 14a when switched are rotated from the initial state of the circular orientation shown by 32a-32c to the electric field direction to shorten a response time and make the response fast.

公开(公告)号：JPH09146086A

公开(公告)日：1997-06-06

申请号：JP32970895

申请日：1995-11-24

Applicant: TOSHIBA CORP

Inventor： OYAMA TAKESHI ,  YOSHIDA NORIHIRO ,  FUKUOKA NOBUKO ,  SHOJI MASAHITO ,  SHOBARA KIYOSHI ,  HADO HITOSHI

IPC: G02F1/137 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/1347 ,  G02F1/139

Abstract: PROBLEM TO BE SOLVED: To make it possible to have a display which has a high contrast ratio and no visual angle dependency. SOLUTION: The liquid crystal display element which performs display operation within the range of an applied voltage which brings liquid crystal molecules 17c included in the center area of a liquid crystal layer 17 an almost erected state, is equipped with at least one of optical anisotropic elements 18 and 19 which is interposed and arranged between at least one polarizing plate and a liquid crystal cell and has negative optical anisotropy corresponding to a specific array of liquid crystal molecules so that transmitted light is given 2nd retardation canceling and compensating 1st retardation given to the light transmitted through the liquid crystal cell by liquid crystal molecules 17a-17e in a specific array in one voltage applied state.

公开(公告)号：JPH07181445A

公开(公告)日：1995-07-21

申请号：JP32866193

申请日：1993-12-24

Applicant: TOSHIBA CORP

Inventor： SHOJI MASAHITO

IPC: G02F1/133 ,  G09G3/36

Abstract: PURPOSE:To improve the display grade of a liquid crystal display device of a simple matrix type by eliminating the nonuniformity of display occurring in the distortion, etc., of the voltages impressed to liquid crystals. CONSTITUTION:The effective voltage values to be impressed between third electrodes 104 and signal electrodes 102 are changed in such a direction where the voltages impressed to the liquid crystals on the signal electrodes 102 are made uniform with each other according to the display contents of pixel 103 groups on the individual signal electrodes 102. Namely, such voltages that the effective values of the voltages impressed to the liquid crystals on the signal electrodes 102 having many on pixels on the same signal electrodes 102 and the effective values of the voltages impressed to the liquid crystals on the signal electrodes 102 having many off pixels separate from the signal electrodes 102 are made uniform are impressed to the third electrodes 102. As a result, the display unequalness of the screen occurring in the variation in the voltage impressed to the liquid crystals between plural pieces of the signal electrodes 102 is lessened or eliminated.

公开(公告)号：JPH07152016A

公开(公告)日：1995-06-16

申请号：JP29926293

申请日：1993-11-30

Applicant: TOSHIBA CORP

Inventor： KONDO SUSUMU ,  SHOJI MASAHITO ,  HIRAI YASUKATSU

IPC: G02F1/133

Abstract: PURPOSE:To realize a liquid crystal display device which eliminates the generation of flickers and has a good contrast ratio (brightness) characteristic and high display grade. CONSTITUTION:The main sections of the liquid crystal display device are composed of a liquid crystal display element 100, a scanning electrode driving section 200 for impressing a scanning voltage to this liquid crystal display element 100, a signal electrode driving section 300 for impressing a signal voltage to the liquid crystal display element, a liquid crystal driving voltage power source section 400 for supplying a liquid crystal driving voltage to the scanning electrode driving section 200 and the signal electrode driving section 300, a driving waveform data forming section 500 for delivering scanning voltage waveform data and signal voltage waveform data respectively to the scanning electrode driving section 200 and the signal electrode driving section 300 and a gradation- thinning data conversion section 600 for delivering the frame thinning data for making gradation thinning expression to this driving waveform data forming section 500.

公开(公告)号：JPH05341318A

公开(公告)日：1993-12-24

申请号：JP15182492

申请日：1992-06-11

Applicant: TOSHIBA CORP

Inventor： YAMADA YUMIKO ,  SHOJI MASAHITO

IPC: G02F1/1343 ,  G02F1/136 ,  G02F1/1362 ,  G02F1/1368

Abstract: PURPOSE:To provide the active matrix type liquid crystal display element of high display quality by making the controllability of a gradation display superior and improving the visual angle characteristics. CONSTITUTION:This element is equipped with plural drain lines 1 and plural signal lines 3, switching elements such as field effect type TFTs 5 which are arranged at their intersection parts, a 1st pixel electrode 7 and a 2nd pixel electrode 9 which are pixel electrodes connected to the signal lines 3 through the field effect type TFTs 5 and have 1st and 2nd display areas, different in applied electric field intensity, arranged, pixel by pixel, counter electrodes which are arranged opposite the pixel electrodes 7 and 9, liquid crystal layers 13 sandwiched between the pixel electrodes 7 and 9 and counter electrodes 11, and two capacitance elements 15 and 17 which are connected to the 2nd pixel electrode 9 in the 2nd display area in series and set nearly equal in electrostatic capacity.

公开(公告)号：JPH0996790A

公开(公告)日：1997-04-08

申请号：JP25330295

申请日：1995-09-29

Applicant: TOSHIBA CORP

Inventor： TANAKA YASUHARU ,  ISHIKAWA MASAHITO ,  OKAMOTO MASUMI ,  FUKUOKA NOBUKO ,  NINOMIYA TOSHIHIRO ,  OYAMA TAKESHI ,  YOSHIDA NORIHIRO ,  SHOJI MASAHITO ,  HADO HITOSHI

IPC: G02F1/13 ,  G02F1/133

Abstract: PROBLEM TO BE SOLVED: To obtain a novel high-speed responsive LCD which has a large capacity and is practically usable for high-fineness display by adopting the constitution to approximately parallel the plural liquid crystal molecules of a third liquid crystal layer region with each other and to twist and arrange the liquid crystal molecules within the intra-surface direction of substrates from the one substrate toward the other substrate when no voltage is impressed on electrodes. SOLUTION: The liquid crystal layer 9 consists of the first liquid crystal layer region A, the liquid crystal layer region B and the third liquid crystal layer region C consisting of the plural liquid crystal molecules held between these two regions. The plural liquid crystal molecules in the third liquid crystal layer region C are approximately parallel with each other and are twisted and arranged within the intra-surface direction of the substrates from the one substrate toward the other substrate in the non-impression of the voltage on the electrodes. The inclination of a part of the liquid crystal molecules 9a among the plural liquid crystal molecules in the third liquid crystal layer region C is arranged approximately parallel with the normal direction of the substrates. The state of the liquid crystal layer at the impression of the first voltage attains the state approximate to the bent arrangement in pi cells. The high- speed response is obtd. when the liquid crystal driving voltage is changed.

公开(公告)号：JPH08114795A

公开(公告)日：1996-05-07

申请号：JP25045194

申请日：1994-10-17

Applicant: TOSHIBA CORP

Inventor： HASEGAWA MAKOTO ,  SHOJI MASAHITO ,  HISATAKE YUZO

IPC: G02F1/13 ,  G02F1/1335

Abstract: PURPOSE: To realize a display device constituted so that information is offered with respect to only an observer being in the direction of a specified visual field angle. CONSTITUTION: The display device is provided with a liquid crystal display element being as a display panel emitting display light and an optical control panel 1 which is a plate-like optical control element used by being superposed on the display panel, which is provided with an absorbing axis selectively absorbing the light advancing in a specified direction among the incident light 2a provided with the plural advancing directions and which selectively emits the light advancing in the specified direction among the light being at a 10 deg.

公开(公告)号：JPH04360192A

公开(公告)日：1992-12-14

申请号：JP13612591

申请日：1991-06-07

Applicant: TOSHIBA CORP

Inventor： SHOJI MASAHITO ,  HIRAI YASUKATSU

IPC: G02F1/133 ,  G09G3/36

Abstract: PURPOSE:To eliminate a display irregularity by shifting the output voltage of a segment driver IC in level and applying it to a segment when the output voltage level is inverted in polarity. CONSTITUTION:The cause of the display irregularity relates to the polarity inversion of the signal voltage level of the output of the segment driver IC corresponding to the nonselection voltage level of the output of a common driver IC. For the purpose, the output voltage level of the segment driver IC is shifted from specific voltage levels VDD' and V2'-V5' to VDD and V2-V5 for a specific time (e.g. 10 clocks) when the output voltage level of the segment driver IC is inverted about the nonselection voltage level of the output of the common driver IC shown by a chain line in a figure. Consequently, the influence of the polarity inversion of the voltage applied to liquid crystal upon the rounding of a driving waveform and frequency variation is compensated to eliminate the display irregularity.