公开(公告)号：JP2012247465A

公开(公告)日：2012-12-13

申请号：JP2011116558

申请日：2011-05-25

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： MAEDA TOSHIYUKI ,  YOSHIHAMA YUTAKA

IPC: G09G3/28 ,  G09G3/20

Abstract: PROBLEM TO BE SOLVED: To stably generate a write discharge when an image in black is changed to a normal image by suppressing brightness of black displayed on a plasma display panel by performing stable writing operation without performing forcible initializing operation, and also lowering brightness of a lower gradation following the black.SOLUTION: One field includes a subfield of first kind which generates and applies a maintenance pulse to a display electrode pair in a maintenance period, and a subfield of second kind which does not generate a maintenance pulse in the maintenance period, but generates and applies an up inclined waveform voltage and a down inclined waveform voltage to a scanning electrode. An average brightness level of a displayed image is detected, and one of a subfield having minimum brightness weight among subfields of first kind and the subfield of second kind is made to illuminate at a lighting rate according to the detection result.

Abstract translation: 要解决的问题：为了通过在不进行强制初始化操作的情况下执行稳定的写入操作，通过抑制显示在等离子体显示面板上的黑色的亮度将黑色图像变为正常图像来稳定地产生写入放电，并且还降低 黑色之后的较低等级的亮度。 解决方案：一个场包括在维护期间产生并施加维持脉冲到显示电极对的第一种子场和在维护期间不产生维护脉冲的第二种的子场，但是产生 并向扫描电极施加向上倾斜的波形电压和向下倾斜的波形电压。 检测显示图像的平均亮度水平，并且使根据检测结果以照明率照亮第一种子区域和第二种子区域中具有最小亮度权重的子场之一。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012242730A

公开(公告)日：2012-12-10

申请号：JP2011114630

申请日：2011-05-23

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： KIUCHI SHINYA ,  SAITO NATSUKI ,  OWAKI YOSHIAKI ,  ARAI KUMIKO ,  YOSHIHAMA YUTAKA ,  MAEDA TOSHIYUKI

IPC: G09G3/28 ,  G09G3/20

Abstract: PROBLEM TO BE SOLVED: To suppress occurrence of a discharge failure and improve contrast.SOLUTION: A plasma display device comprises: drive parts 110, 120, 130 and 140 for applying driving voltage to a scanning electrode, a sustaining electrode and a data electrode of a panel 10; and control parts 100 and 190 for switching, based on a predetermined determination result, whether or not to control the driving parts 110, 120, 130 and 140 and provide an initialization period for applying driving voltage between the scanning electrode, and the data electrode and the sustaining electrode to generate an initialization discharge for activating electric charge in a discharge cell, just before a writing period.

Abstract translation: 要解决的问题：抑制放电故障的发生并改善对比度。 解决方案：等离子体显示装置包括：用于向面板10的扫描电极，维持电极和数据电极施加驱动电压的驱动部分110,120,130和140; 以及用于根据预定确定结果切换驱动部分110,120,130和140是否控制驱动部分110,120,130和140并提供用于在扫描电极和数据电极之间施加驱动电压的初始化周期的控制部分100和190，以及 所述维持电极在写入周期之前产生用于在放电单元中激活电荷的初始化放电。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012225965A

公开(公告)日：2012-11-15

申请号：JP2011090600

申请日：2011-04-15

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： OWAKI YOSHIAKI ,  YOSHIHAMA YUTAKA ,  MAEDA TOSHIYUKI ,  KIUCHI SHINYA ,  ARAI KUMIKO

IPC: G09G3/28 ,  G09G3/20

Abstract: PROBLEM TO BE SOLVED: To prevent generation of a discharge failure by activating electric charges in a discharge cell.SOLUTION: A plasma display device includes: a plasma display panel 10 provided with a plurality of pixels including discharge cells having scanning electrodes, maintenance electrodes, and data electrodes; a driving part 116 which has a writing period, a maintenance period, and applies drive voltage to the scanning electrodes, the maintenance electrodes, and the data electrodes for every plurality of subfields provided in one field period; a detection part 111 which detects an index representing luminance variation of an input video signal in a frame; a determination part 113 which determines whether or not the index detected by the detection part 111 is equal to or more than a preset threshold; and control parts 113, 114 which control the driving part 116 to forcibly make the discharge cells emit light when it is determined that the index is equal to or more than the threshold by the determination part 113.

Abstract translation: 解决的问题：为了防止通过激活放电单元中的电荷而产生放电故障。 解决方案：等离子体显示装置包括：等离子体显示面板10，其设置有包括具有扫描电极，维护电极和数据电极的放电单元的多个像素; 驱动部116，其具有写入周期，维护周期，并且对设置在一个场周期中的每个子场的扫描电极，维护电极和数据电极施加驱动电压; 检测部111，其检测表示帧中的输入视频信号的亮度变化的指标; 确定部113，其确定由检测部111检测到的索引是否等于或大于预设阈值; 以及控制部113,114，其通过判定部113确定指标等于或大于阈值时，控制驱动部116强制地使放电单元发光。版权所有（C）2013 ，JPO＆INPIT

公开(公告)号：JP2012159558A

公开(公告)日：2012-08-23

申请号：JP2011017547

申请日：2011-01-31

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： MIZOGAMI KANAME ,  SAKAMOTO MITSUHIRO ,  YOSHIHAMA YUTAKA

IPC: G09G3/20 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/293 ,  G09G3/294 ,  G09G3/296 ,  G09G3/298 ,  H01J11/12 ,  H01J11/22 ,  H01J11/24 ,  H01J11/26 ,  H01J11/34 ,  H01J11/36 ,  H01J11/40

CPC classification number: H01J11/12 ,  G09G3/2022 ,  G09G3/2927 ,  G09G3/296 ,  G09G2320/0238 ,  H01J11/40

Abstract: PROBLEM TO BE SOLVED: To eliminate light emission which does not relate to gradation display by omitting forcible initialization operation while stably performing writing operation, and to greatly improve a contrast.SOLUTION: In an erasure period, an erasure discharge is selectively generated only with a discharge cell which has generated a write discharge in a write period right before the erasure period. Denoting the voltage obtained by subtracting a voltage applied to a data electrode from a low voltage-side voltage of a sustain pulse as a first voltage, the voltage obtained by subtracting the voltage applied to a data electrode from a high voltage-side voltage of the sustain pulse as a second voltage, and the voltage obtained by subtracting a low voltage-side voltage of a data pulse applied to the data electrode, from a low voltage-side voltage of a scanning pulse as a third voltage, the voltage obtained by subtracting the third voltage from the first voltage is equal to or higher than a discharge start voltage applied with the data electrode as an anode and a scan electrode as a cathode, and the voltage obtained by subtracting the third voltage from the second voltage does not exceed the sum of the discharge start voltage applied with the data electrode as the anode and the scan electrode as the cathode and a discharge start voltage applied with the data electrode as a cathode and the scan electrode as an anode.

Abstract translation: 要解决的问题：通过在稳定地执行写入操作的同时省略强制初始化操作来消除与灰度显示无关的发光，并且极大地改善对比度。 解决方案：在擦除期间，只有在擦除周期之前的写入周期中已经产生写入放电的放电单元才选择性地产生擦除放电。 表示从维持脉冲的低电压侧电压中减去施加到数据电极的电压作为第一电压而获得的电压，通过从第一电压的高压侧电压减去施加到数据电极的电压而获得的电压 维持脉冲作为第二电压，并且通过从作为第三电压的扫描脉冲的低电压侧电压中减去施加到数据电极的数据脉冲的低电压侧电压获得的电压，通过减去 来自第一电压的第三电压等于或高于施加作为阳极的数据电极和作为阴极的扫描电极的放电开始电压，并且通过从第二电压减去第三电压而获得的电压不超过 以作为阳极的数据电极和作为阴极的扫描电极施加的放电开始电压和作为阴极的数据电极施加的放电开始电压的和为t 他扫描电极作为阳极。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011248080A

公开(公告)日：2011-12-08

申请号：JP2010121099

申请日：2010-05-27

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： YOSHIHAMA YUTAKA ,  SAWA KAZUKI

IPC: G09G3/28 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/293 ,  G09G3/294 ,  G09G3/298

Abstract: PROBLEM TO BE SOLVED: To eliminate light emission irrelevant to gradation display by omitting forced initialization operation while reducing discharge delay and stably causing write operation.SOLUTION: In a driving method of a plasma display panel, one field consists of multiple subfields which have a writing period, a maintaining period and an elimination period respectively. During the elimination period, only a discharge cell which has caused writing discharge during the previous writing period causes elimination discharge selectively. The multiple subfields have: first scan operation to apply a scan pulse only to odd-numbered electrodes sequentially in a direction from one scan electrode to the other scan electrode among multiple scan electrodes arranged during the writing period; and second scan operation to apply the scan pulse only to even-numbered electrodes sequentially in a direction from the other scan electrode to one scan electrode among the scan electrodes.

Abstract translation: 要解决的问题：通过省略强制初始化操作来消除与灰度显示无关的光发射，同时减少放电延迟并稳定地引起写入操作。 解决方案：在等离子体显示面板的驱动方法中，一个场由分别具有写入周期，维持周期和消除周期的多个子场组成。 在消除期间，仅在先前写入期间引起写入放电的放电单元选择性地消除放电。 多个子场具有：在写入周期期间布置的多个扫描电极之间，在从一个扫描电极到另一扫描电极的方向上顺序地向奇数编号的电极施加扫描脉冲的第一扫描操作; 以及第二扫描操作，以便在扫描电极中沿着从另一个扫描电极到一个扫描电极的方向依次将扫描脉冲施加到偶数电极。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011164441A

公开(公告)日：2011-08-25

申请号：JP2010028459

申请日：2010-02-12

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： ORIGUCHI TAKAHIKO ,  SHIOZAKI HIRONARI ,  SHOJI HIDEHIKO ,  YOSHIHAMA YUTAKA

IPC: G09G3/20 ,  G09G3/28 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/298

Abstract: PROBLEM TO BE SOLVED: To not only allow a 3D image to be displayed on a plasma display device but also stably cause an initializing operation to display an image of high quality.
SOLUTION: Each of a field for right eye and a field for left eye is constituted by, with respect to time, first disposing a subfield having the greatest luminance weight and subsequently disposing subfields in the descending order of luminance weights. A forced initializing operation is performed in an initialization period of the first disposed subfield, and a selective initializing operation is performed in an initialization period of subsequently disposed subfields, and a rectangular wave voltage is applied to a scanning electrode to generate an erase discharge in a sustain period of the last disposed subfield, and a slowly rising ramped waveform voltage is applied to the scanning electrode to generate an erase discharge in a sustain period of subfields disposed before the last disposed subfield, and a write discharge is generated even in the last disposed subfield in a discharge cell which generates a write discharge in at least one subfield.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了不仅允许在等离子体显示装置上显示3D图像，而且稳定地使初始化操作显示高质量的图像。 解决方案：用于右眼的场和用于左眼的场中的每一个由相对于时间构成，首先设置具有最大亮度权重的子场，并且随后以亮度权重的降序布置子场。 在第一配置子场的初始化期间进行强制初始化动作，在后续配置的子场的初始化期间进行选择初始化动作，向扫描电极施加矩形波电压，生成擦除放电 并且缓慢上升的斜坡波形电压被施加到扫描电极，以在设置在最后设置的子场之前的子场的维持周期中产生擦除放电，并且即使在最后处理的子场中也产生写入放电 在至少一个子场中产生写入放电的放电单元中的子场。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010249913A

公开(公告)日：2010-11-04

申请号：JP2009096826

申请日：2009-04-13

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： YOSHIHAMA YUTAKA ,  MASUDA TOMOMITSU

IPC: G09G3/20 ,  G09G3/28 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/296 ,  G09G3/298

CPC classification number: G09G3/2965 ,  G09G3/2922 ,  G09G3/2927 ,  G09G3/294 ,  G09G2310/066 ,  G09G2320/0238 ,  G09G2360/16

Abstract: PROBLEM TO BE SOLVED: To enhance image display quality by reducing black brightness of display images to heighten contrast when displaying images of a low average brightness level and stably generating writing discharge when displaying images of a high average brightness level. SOLUTION: A method for driving a plasma display panel includes: applying compulsive initialization waveform on a prescribed scanning electrode in an initialization period; providing a specific cell initialization subfield applying non-initialization waveform on other scanning electrodes and a selective initialization subfield applying selective initialization waveform on all the scanning electrodes in the initialization period; providing a specific cell initialization field having the specific cell initialization subfield and a plurality of the selective initialization subfields; and modifying generation frequency of the compulsive initialization waveform in response to size of an average brightness level so as to reduce frequencies applying the compulsive initialization waveform on the scanning electrodes as the average brightness level of input image signals becomes lower. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：通过降低显示图像的黑色亮度来提高图像显示质量，以在显示低平均亮度水平的图像时显示对比度，并且当显示高平均亮度水平的图像时稳定地产生写入放电。 解决方案：一种用于驱动等离子体显示面板的方法包括：在初始化期间对规定的扫描电极施加强制初始化波形; 提供在初始化时间段内在其他扫描电极上施加非初始化波形的特定单元初始化子场和在所有扫描电极上施加选择性初始化波形的选择性初始化子场; 提供具有特定小区初始化子字段的特定小区初始化字段和多个选择性初始化子字段; 以及响应于平均亮度水平的大小来修改强制初始化波形的生成频率，以便随着输入图像信号的平均亮度水平变低而在扫描电极上施加强制初始化波形的频率。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2012113008A

公开(公告)日：2012-06-14

申请号：JP2010259740

申请日：2010-11-22

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： YOSHIHAMA YUTAKA ,  MAEDA TOSHIYUKI

IPC: G09G3/20 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/294 ,  G09G3/298

Abstract: PROBLEM TO BE SOLVED: To suppress the luminance of a black displayed on a plasma display panel by performing stable writing operation without performing forced initializing operation and by reducing the luminance of a tone lower next to that of the black, to stably generate a write discharge when a display image switches from a black image to an ordinary image.SOLUTION: One field includes a first type subfield that generates sustaining pulses of the number corresponding to a luminance weight during a sustaining period and applies the same to a pair of display electrodes, and a second type subfield that generates a rising waveform voltage and a falling waveform voltage without generating sustaining pulses during sustaining period and applies the same to a scanning electrode. The second type subfield is configured as a subfield which has the smallest luminance weight. When an image to be displayed on the plasma display panel fulfills a predetermined condition, a subfield having the smallest luminance weight is forcibly turned on at a predetermined lighting ratio.

Abstract translation: 要解决的问题：为了通过执行稳定的写入操作而不执行强制初始化操作并且通过降低与黑色接近的色调的亮度来抑制显示在等离子体显示面板上的黑色的亮度，以稳定地产生 当显示图像从黑色图像切换到普通图像时的写入放电。 解决方案：一个场包括第一类型子场，其在维持周期期间产生对应于亮度权重的数量的维持脉冲，并将其施加到一对显示电极，以及产生上升波形电压的第二类型子场 以及在维持期间不产生维持脉冲的下降波形电压并将其施加到扫描电极。 第二类型子场被配置为具有最小亮度权重的子场。 当待显示在等离子体显示面板上的图像达到预定条件时，具有最小亮度权重的子场以预定的照明比强制地开启。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012108177A

公开(公告)日：2012-06-07

申请号：JP2010254673

申请日：2010-11-15

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： YOSHIHAMA YUTAKA ,  MAEDA TOSHIYUKI

IPC: G09G3/20 ,  G09G3/28 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/293 ,  G09G3/294 ,  G09G3/296 ,  G09G3/298

Abstract: PROBLEM TO BE SOLVED: To perform a stable writing operation without performing a forced initialization operation and suppress luminance of black displayed in a plasma display panel, as well as to reduce luminance of lower gradation next to black and generate a writing discharge stably when a displayed image switches from a black image to a normal image.SOLUTION: One field includes a first type subfield to generate sustaining pulses of a number corresponding to luminance weight during a sustaining period and apply them to a display electrode pair, and a second type subfield of the least luminance weight to generate an ascending inclined waveform voltage and a descending inclined waveform voltage instead of generating sustaining pulses during a sustaining period and apply them to a scanning electrode. The field detects brightness around a plasma display device, and with a lighting rate corresponding to the detected brightness, forcibly turns on a subfield of the least luminance weight.

Abstract translation: 要解决的问题：为了执行稳定的写入操作而不执行强制初始化操作并且抑制等离子体显示面板中显示的黑色亮度，并且降低黑色附近的灰度的亮度，并稳定地产生写入放电 当显示的图像从黑色图像切换到正常图像时。 解决方案：一个场包括第一类型子场，用于在维持周期期间产生对应于亮度权重的数字的维持脉冲并将其施加到显示电极对，以及最小亮度权重的第二类型子场以产生升序 倾斜波形电压和下降倾斜波形电压，而不是在维持周期期间产生维持脉冲并将其施加到扫描电极。 该场检测等离子体显示装置周围的亮度，并且对应于检测到的亮度的照明率，强制地打开最小亮度权重的子场。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012058654A

公开(公告)日：2012-03-22

申请号：JP2010204159

申请日：2010-09-13

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： YOSHIHAMA YUTAKA ,  MAEDA TOSHIYUKI

IPC: G09G3/20 ,  G09G3/288 ,  G09G3/291 ,  G09G3/292 ,  G09G3/294 ,  G09G3/296 ,  G09G3/298

Abstract: PROBLEM TO BE SOLVED: To improve contrast by performing a stable writing operation on a plasma display panel, even if a forced initialization operation is not used.SOLUTION: A fourth voltage is applied to a data electrode in at least a prescribed period including a period when a high pressure side voltage of a sustaining pulse is applied to a scanning electrode in a sustaining period. A fifth voltage which is higher than the fourth voltage is applied to the data electrode in the sustaining period except the prescribed period. When a voltage obtained by deducting the fourth voltage applied to the data electrode from a low pressure side voltage of the sustaining pulse applied to the scanning electrode in the sustaining period is a first voltage and a voltage obtained by deducting a low pressure side voltage of a writing pulse applied to the data electrode from a low pressure side voltage of a scanning pulse applied to the scanning electrode in a writing period is a third voltage, a voltage obtained by deducting the third voltage from the first voltage is equal to or higher than a discharge start voltage having the data electrode as an anode and the scanning electrode as a cathode.

Abstract translation: 要解决的问题：即使不使用强制初始化操作，通过在等离子体显示面板上执行稳定的写入操作来改善对比度。 解决方案：在至少规定的周期内，向数据电极施加第四电压，包括在维持期间将维持脉冲的高压侧电压施加到扫描电极的期间。 高于第四电压的第五电压在除指定周期之外的维持期间被施加到数据电极。 当从维持期间施加到扫描电极的维持脉冲的低压侧电压中减去施加到数据电极的第四电压获得的电压是第一电压，并且通过减去 在写入期间从施加到扫描电极的扫描脉冲的低压侧电压施加到数据电极的写入脉冲是第三电压，通过从第一电压中扣除第三电压而获得的电压等于或高于 具有作为阳极的数据电极的放电开始电压和作为阴极的扫描电极。 版权所有（C）2012，JPO＆INPIT