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公开(公告)号:US20100060625A1
公开(公告)日:2010-03-11
申请号:US12513437
申请日:2008-06-12
IPC分类号: G09G5/00
CPC分类号: G09G3/2927 , G09G3/2022 , G09G3/294 , G09G3/296 , G09G3/2965 , G09G2310/066 , G09G2320/0271 , G09G2320/066 , G09G2330/028
摘要: Provided to stabilize generation of address discharge and improve gradation characteristics of display images are the following elements: a plasma display panel; a sustain pulse generating circuit; and a ramp voltage generating circuit including a first ramp voltage generating circuit, a second ramp voltage generating circuit, and a switching circuit. The first ramp voltage generating circuit generates a first ramp voltage gently increasing in an initializing period. The second ramp voltage generating circuit generates a second ramp voltage increasing with a gradient gentler than that of the rising edge of a sustain pulse and steeper than that of the first ramp voltage, at the end of each sustain period. The switching circuit stops the operation of the second ramp voltage generating circuit immediately after the second ramp voltage reaches a predetermined electric potential. In at least one sustain period of one field, no sustain pulse but the second ramp voltage is generated.
摘要翻译: 为了稳定地址放电的产生和提高显示图像的灰度特性,提供以下元件:等离子体显示面板; 维持脉冲发生电路; 以及包括第一斜坡电压产生电路,第二斜坡电压产生电路和开关电路的斜坡电压产生电路。 第一斜坡电压产生电路在初始化周期中产生缓慢增加的第一斜坡电压。 在每个维持周期结束时,第二斜坡电压产生电路产生比维持脉冲的上升沿缓慢的梯度变化并且比第一斜坡电压的上升沿更陡峭的第二斜坡电压。 开关电路在第二斜坡电压达到预定电位之后立即停止第二斜坡电压产生电路的操作。 在一个场的至少一个维持周期中,不产生维持脉冲,而不产生第二斜坡电压。