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    • 6. 发明授权
    • Driving method for thin film el display device and driving circuit
thereof
    • 薄膜EL显示装置的驱动方法及其驱动电路
    • US4951041A
    • 1990-08-21
    • US215772
    • 1988-07-06
    • Shuji InadaToshihiro OhbaHiroshi KishishitaHisashi Uede
    • Shuji InadaToshihiro OhbaHiroshi KishishitaHisashi Uede
    • G09G3/30
    • G09G3/30G09G2310/0267G09G2310/0275
    • A driving method is described for thin film EL display devices having an EL layer interposed between scanning side electrodes and data side electrodes which are intersected to each other. The method comprises displaying frames formed by a line sequential drive in which voltage corresponding to display data is applied to the data side electrodes. Concurrently, write pulses which are negative and positive with respect to the data side electrodes are applied to the scanning side electrodes. Further the write pulses which are positive or negative with respect to the data side electrodes are applied to the scanning electrodes. The number of light emitting picture elements of the scanning side electrodes is previously detected from display data and the width of the write pulses, which are at least one of positive or negative is controlled in proportion to the number of the light emitting picture elements. Thus, the brightness of the light emitting picture elements is uniform due to the driving circuit thereof.
    • 对于具有夹在扫描侧电极和彼此相交的数据侧电极之间的EL层的薄膜EL显示装置,描述了驱动方法。 该方法包括显示由行顺序驱动形成的帧,其中对应于显示数据的电压被施加到数据侧电极。 并行地,对扫描侧电极施加相对于数据侧电极为负的正脉冲。 此外,相对于数据侧电极为正或负的写脉冲被施加到扫描电极。 从显示数据预先检测扫描侧电极的发光像素的数量,并且与发光像素的数量成比例地控制至少一个正或负的写入脉冲的宽度。 因此,由于其驱动电路,发光像素的亮度是均匀的。
    • 8. 发明授权
    • Method and apparatus for driving display device
    • 用于驱动显示装置的方法和装置
    • US6127993A
    • 2000-10-03
    • US860254
    • 1992-03-31
    • Toshihiro OhbaAtsushi SakamotoYoshiyuki KokuhataHiroshi KishishitaHisashi Uede
    • Toshihiro OhbaAtsushi SakamotoYoshiyuki KokuhataHiroshi KishishitaHisashi Uede
    • H05B33/08G09G3/30H04N3/12H04N3/14
    • G09G3/30H04N3/127H04N3/14G09G2310/027
    • In a display device such as a thin-film EL display device, etc. formed with a dielectric layer disposed between a plurality of scanning side electrodes and a plurality of data side electrodes in the direction for them intersecting to each other, a modulation voltage, varied according to gradation display data is applied to the data side electrodes, and a positive or negative writing voltage is applied to the scanning side electrodes in a line order for a gradation display different in brightness. Binary coded signals corresponding to each gradation of a gradation display are used as the gradation display data. The logical value of the binary coded signal is inverted according to the polarity of the writing voltage. Thus, a common gradation display can be performed from one binary coded signal for both the negative driving that applies a negative writing voltage and the positive driving that applies a positive writing voltage. As a result, by only by adding a data conversion circuit for inverting a binary coded signal, the function that converts the correspondence relation between the gradation to be displayed and the gradation display data depending on the negative driving or positive driving can be incorporated.
    • 在诸如薄膜EL显示装置等的显示装置中,形成有在彼此相交的方向上设置在多个扫描侧电极和多个数据侧电极之间的电介质层的调制电压, 根据灰度显示数据而变化的数据被施加到数据侧电极,并且以与亮度不同的灰度显示的行顺序向扫描侧电极施加正或负写入电压。 使用与灰度显示的各灰度对应的二进制编码信号作为灰度显示数据。 二进制编码信号的逻辑值根据写入电压的极性反转。 因此,对于施加负写入电压的负驱动和施加正写入电压的正驱动,可以从一个二进制编码信号执行公共灰度显示。 结果,通过仅添加用于反转二进制编码信号的数据转换电路,可以并入根据负驱动或正驱动转换要显示的灰度与灰度显示数据之间的对应关系的功能。
    • 9. 发明授权
    • Method and apparatus for driving a display device
    • 用于驱动显示装置的方法和装置
    • US5325107A
    • 1994-06-28
    • US68300
    • 1993-05-28
    • Ikuo OgawaAkio InoharaToshihiro OhbaHiroshi KishishitaHisashi Uede
    • Ikuo OgawaAkio InoharaToshihiro OhbaHiroshi KishishitaHisashi Uede
    • G09G3/28G09G3/30H04N3/12
    • H04N3/127G09G3/2014G09G3/28G09G3/30G09G2310/0267G09G2310/066
    • A display device, such as thin film EL display device, is formed by interposing a dielectric layer between a plurality of scanning electrodes and a plurality of data electrodes which are arranged at right angles. Modulation voltage is varied in accordance to the display data, and is applied to the data electrodes. Further, a writing voltage is applied to the scanning electrodes in sequential line order, to thereby perform gradation display. Further, the writing voltage includes a ramp voltage, which varies with time. Thus, the peak of the current flowing through the luminescent layer of the picture element, as a current contributing to the luminescence, is suppressed to a low level. contributing to the luminescence, is suppressed to a low level. Accordingly, the energization period of the current is also elongated. Thus gradation display over multiple levels is made possible and a stable display of different gradation levels is enabled.
    • 诸如薄膜EL显示装置的显示装置通过在多个扫描电极和直角排列的多个数据电极之间插入介电层而形成。 调制电压根据显示数据而变化,并被施加到数据电极。 此外,以顺序的行顺序对扫描电极施加写入电压,从而进行灰度显示。 此外,写入电压包括随时间变化的斜坡电压。 因此,作为有助于发光的电流,流过图像元件的发光层的电流的峰值被抑制到低水平。 有助于发光,被抑制到低水平。 因此,电流的通电时间也延长。 因此,可以实现多级的灰度显示,并且能够实现不同灰度级的稳定显示。