专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明专利

JPH08305321A DISPLAY DEVICE CONTROL METHOD AND DISPLAY DEVICE 失效
公开(公告)号：JPH08305321A
公开(公告)日：1996-11-22
申请号：JP10970395
申请日：1995-05-08
申请人： FUJITSU LTD
发明人： KAMEYAMA SHIGEKI , TAJIMA MASAYA , TOMIO SHIGETOSHI , KISHI TOMOKATSU , KURIYAMA HIROHITO
IPC分类号： G09G3/28 , G09G3/20 , G09G3/291 , G09G3/294 , G09G3/296
摘要： PURPOSE: To provide a display device control method for controlling to reduce power consumption by controlling a maintenance discharge pulse frequency of a maintenance discharge pulse waveform to make a power consumption value a fixed value or below. CONSTITUTION: Since a consumption current of a device driving high voltage source voltage Vs flows as a peak current, it is converted to a voltage value of a mean current by an integration circuit accompanying a current detection means 1, and is A/D-converted to be fetched in an MPU 13 as the binary data. Then, they are compared with a reference value (reference value of APC convergent value) set in from the beginning, and when they are lower than the value, the luminance setting value of the present condition is outputted as it is. Further, when higher than the reference value, the luminance setting value of the present condition is reduced for operating an APC function. The matter that an hourly change is imparted between the luminance lowering at the time of the start of automatic power consumption control when a display rate in a display device is raised and the luminance rising at the time of going out of the automatic power consumption control when the display rate is lowered is preferred.

42. 发明专利

JPH0744127A PLASMA DISPLAY PANEL 失效
公开(公告)号：JPH0744127A
公开(公告)日：1995-02-14
申请号：JP19070093
申请日：1993-08-02
申请人： FUJITSU LTD
发明人： NAGAOKA YOSHIMASA , KANAZAWA GIICHI , KISHI TOMOKATSU
IPC分类号： G09G3/288 , G09G3/20 , G09G3/291 , G09G3/294 , G09G3/296 , G09G3/298 , G09G3/28
摘要： PURPOSE:To obtain accurate display gradations and to improve the display quality of a gradation display by varying the level of maintaining pulses according to a display rate. CONSTITUTION:The value from a high voltage generating circuit 30 to a high voltage control circuit part 29 is different between an address period and a trickle discharge period. An external high voltage VS is supplied as it is in the address period, but in the trickle discharge period, a variable high voltage VS+alpha which is adjusted according to the current display rate of the display data is supplied. Therefore, the level of the maintaining pulses VS in the trickle discharge period varies with the display rate. Further, the luminance of a screen varies in proportion to the level of the maintaining pulses VS, so the level of the adjusting voltage alpha (data stored in a data converting ROM 32) is optimized to display a high-gradation display part and a low-gradation display part with correct lightness even in case of, for example, a 256-gradation or more gradation display.

43. 发明专利

JPH05216434A DISPLAY DEVICE AND ITS DRIVING METHOD 失效
公开(公告)号：JPH05216434A
公开(公告)日：1993-08-27
申请号：JP1755992
申请日：1992-02-03
申请人： FUJITSU LTD
发明人： KISHI TOMOKATSU
IPC分类号： G09G3/288 , G09G3/291 , G09G3/292 , G09G3/294 , G09G3/296 , G09G3/298 , H01J11/12 , H01J11/20 , H01J11/24 , H01J11/26 , H01J11/36
摘要： PURPOSE:To enable the reduction of the number of driver circuits with the display device known as a flat display panel and the driving method thereof. CONSTITUTION:First electrodes 11, to 11n are commonly arranged with discharge cells of m-pieces lined in the horizontal direction among the discharge cells of which n-pieces are lined in the perpendicular direction and m-pieces in the horizontal direction in a matrix form second electrodes 121 to 12n are disposed in parallel with the first electrodes 111 to 11n. Address electrodes A1 to Am are respectively commonly disposed to n-pieces of the discharge cells in the perpendicular direction to execute selective erasing. First driver circuits 131 to 13n/N commonly drive the first electrodes 111 to 11n by N-pieces each. Second driver circuits 141 to 14N commonly drive the second electrodes 121 to 12n by n/N pieces each, thereby equally dividing N-pieces of display regions.

44. 发明专利

JP2003263126A DISPLAY DEVICE 审中-公开
公开(公告)号：JP2003263126A
公开(公告)日：2003-09-19
申请号：JP2003009936
申请日：2003-01-17
申请人： FUJITSU LTD
发明人： YAO SHINPEI , KANEKO KEIICHI , FUJISAKI TAKASHI , KIMURA HIDEO , KISHI TOMOKATSU
IPC分类号： G09G3/20 , G09G3/291 , G09G3/292 , G09G3/296 , G09G3/28
摘要： PROBLEM TO BE SOLVED: To suppress malfunction occurring when supplying the power source of a plasma display panel and when interrupting the power source. SOLUTION: This device is provided with a power source part 41 for supplying a power source voltage Vs to a display part 42; and the display part 42 having a display panel PP and for performing prescribed display on the display panel based on the power source voltage Vs. Moreover, the display device has a detecting circuit 43 for detecting the interruption of the power source when the power source is interrupted and a residual electric charge erasing circuit 44 for erasing electric charges remaining on the display panel after the interruption of the power source is detected. COPYRIGHT: (C)2003,JPO

45. 发明专利

JP2001013917A DISPLAY DEVICE 失效
公开(公告)号：JP2001013917A
公开(公告)日：2001-01-19
申请号：JP18581299
申请日：1999-06-30
申请人： HITACHI LTD , FUJITSU LTD
发明人： ONOZAWA MAKOTO , SANO YUJI , OSAWA MICHITAKA , SASAKI TAKASHI , AKIYAMA NOBORU , ASAMI FUMITAKA , YOSHIKAWA KAZUO , HIRAKAWA HITOSHI , KISHI TOMOKATSU , KAWADA TOYOSHI
IPC分类号： G09G3/20 , G09G3/288 , G09G3/296 , G09G3/298 , G09G3/28
摘要： PROBLEM TO BE SOLVED: To simplify the circuit constitution of a second electrode drive circuit by using a common circuit constitution for a scan drive circuit and a second electrode sustain circuit. SOLUTION: Scan signals DSCN outputted from a waveform control circuit 11 are inputted into a shift register 18 of an n-th line drive circuit 2n, serial- parallel converted and successively supplied to logic circuits 12 to 19 of first to n-th line drive circuits 2a to 2n. Then, the signals are amplified by drive circuits 13 and 20, power MOSFETs 14, 15, 21 and 22 and supplied to second electrodes Y1 to Yn as scan pulses. Sustain pulses DYS of the electrodes Y1 to Yn are inputted into the circuit 19 as well as the circuit 12, amplified by the circuits 20 and 13, the MOSFETs 21, 22, 14 and 15 and supplied to the electrodes Y1 to Yn as sustain pulses.

46. 发明专利

JP2001013911A DRIVE METHOD FOR PLASMA DISPLAY PANEL 失效
公开(公告)号：JP2001013911A
公开(公告)日：2001-01-19
申请号：JP18274499
申请日：1999-06-29
申请人： FUJITSU LTD
发明人： TAKAYAMA KUNIO , SAKIDA KOICHI , YONEDA YASUSHI , AWAMOTO KENJI , HASHIMOTO YASUNOBU , YOSHIKAWA KAZUO , KISHI TOMOKATSU
IPC分类号： H04N5/66 , G09F9/313 , G09G3/20 , G09G3/288 , G09G3/291 , G09G3/292 , G09G3/296 , G09G3/298 , G09G3/28
摘要： PROBLEM TO BE SOLVED: To realize a steady display by expanding a voltage margin of addressing. SOLUTION: Relating to a plasma display panel provided with first and second display electrodes X, Y for generating a facial discharge and an address electrode A crossing with both of display electrodes holding a dielectric layer therebetween, the charge formation generating the same polarity wall voltage between the same kind of electrodes in all cells constituting a screen related to three kinds of between electrodes of XY between electrodes of the display electrodes each other, XA between electrodes of the first display electrode and an address electrode and YA between electrodes of the second display electrode and the address electrode and the charge adjustment gradually reducing the wall voltage by applying a continuously or stepwise monotonously increasing gradual increase voltage are performed as the preparatory processing of the addressing forming a charge distribution according to the display contents.

47. 发明专利

JPH0981074A DISPLAY DEVICE AND DISPLAY UNIT AS WELL AS DISPLAY SIGNAL FORMING DEVICE 失效
公开(公告)号：JPH0981074A
公开(公告)日：1997-03-28
申请号：JP23966195
申请日：1995-09-19
申请人： FUJITSU LTD
发明人： KAMEYAMA SHIGEKI , KISHI TOMOKATSU
IPC分类号： G09G3/20 , G09G3/28 , G09G3/288 , G09G3/291 , G09G3/296 , G09G3/298
摘要： PROBLEM TO BE SOLVED: To decrease the quantity of the frame memory of a display device which assigns intensity levels in a sub-field system. SOLUTION: This display device has a device body section 1 having a video signal source 2 and a display interface 3 having the frame memory 4, a display panel unit 2 having a matrix panel 100 for assigning intensity levels by the sub-field method, a driver 130 for driving the matrix panel and a display control section 131 for controlling the driver 130 so as to make display according to the display signals by receiving the display signals from the display interface 3 and a cable 9 for connecting the device body section 1 and the display panel unit 2. The display interface 3 transmits the display signals of one frame in a sub-field unit.

48. 发明专利

JPH087770A SURFACE DISCHARGE AC PLASMA DISPLAY PANEL AND DISPLAY DEVICE USING THIS 失效
公开(公告)号：JPH087770A
公开(公告)日：1996-01-12
申请号：JP14423194
申请日：1994-06-27
申请人： FUJITSU LTD
发明人： KIMURA HIDEO , KISHI TOMOKATSU
IPC分类号： G09F9/313 , H01J11/10 , H01J11/14 , H01J11/24 , H01J11/28 , H01J11/32 , H01J11/36 , H01J11/38 , H01J11/40 , H01J11/42 , H01J11/00
摘要： PURPOSE:To lessen the size of picture element and achieve a highly fine displaying by installing a plurality of linearly maintaining electrodes on a glass board in such a way as separately and at a different level from a plane-form maintaining electrode. CONSTITUTION:On the first board 11 a plurality of linear. second electrodes Y1-Yn are installed in such a way as separately and at a different level from the first electrode XA. and the first electrode XA and second electrodes Y1-Yn are covered with dielectric substance layers 12, 13. Separately from the first board 11 the second board 14 is installed opposingly, and a plurality of third electrodes A1-An are installed on the second board 14 in such a way as separately from and in intersection with the second electrodes Y1-Yn. A phosphor 15 is attached to the second board 14 side, and a gas for discharging is encapsulated in the space 17 bounded by the first board 11 and second board 14. Thereby the size of picture element is made smaller than in a conventional arrangement in which the first electrode and the second electrodes are located on a level, and the displaying can be made with a high fineness.

49. 发明专利

JPH06348220A POWER CIRCUIT OF DISPLAY DEVICE 失效
公开(公告)号：JPH06348220A
公开(公告)日：1994-12-22
申请号：JP13597293
申请日：1993-06-07
申请人： FUJITSU LTD
发明人： YAO SHINPEI , KISHI TOMOKATSU
IPC分类号： G09G3/00 , H02H3/247
摘要： PURPOSE:To place a protecting circuit in normal operation without attaching a circuit for a sequence to an external input power source as to the power circuit of the display device which are supplied with two kinds of voltages from outside. CONSTITUTION:This is the power circuit of the display device 100 which is supplied with the high voltage for display and the low voltage for circuit control and equipped with the protecting circuit 1 which stops supplying the high voltage to the display device when the high voltage drops below a 1st specific voltage; and this power circuit is equipped with a protection part control circuit 2 which stops the protecting operation of the protecting circuit 1 until the high voltage reaches the 1st specific voltage when the high voltage and low voltage begin to be supplied.

50. 发明专利

JPH06274125A DRIVING METHOD OF FLAT PANEL DISPLAY 失效
公开(公告)号：JPH06274125A
公开(公告)日：1994-09-30
申请号：JP5923293
申请日：1993-03-19
申请人： FUJITSU LTD
发明人： KISHI TOMOKATSU , KANAZAWA GIICHI
IPC分类号： G09G3/288 , G09G3/20 , G09G3/296 , G09G3/28
摘要： PURPOSE:To minimize the power consumption by setting the timing of switching to a constant voltage to optimum timing irrelevantly to variance in circuit constant as to the driving method of the flat panel display device which collects electric charges generated at a capacitive load between a common electrode and a scanning electrode when a driving voltage (pulse voltage) is generated. CONSTITUTION:(a) The common electrode or scanning electrodes Y1-Yn are charged by a constant power source 20 and (b) the power source is switched to a constant voltage source after electric charges of the common or scanning electrodes are collected in a capacitor CK through a coil LK; and (c) the timing of a period wherein the collected electric charges are utilized and the timing of a period wherein the power source is switched to the constant voltage source is fixed. After the current of the constant voltage source is confirmed by repeating (a)-(c) for a certain period, (e) the switching timing is shifted by an extremely short time and variation between a current after the execution of (a)-(c) and a last current is confirmed; and (f) the switching timing is set based on the large-small relation between (i)th current variation and (i+1)th current variation of the constant voltage power source of (a)-(c).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式