Display device and drive method for the same

A technology of a display device and a driving method, which is applied to static indicators, instruments, etc., and can solve problems such as inability to obtain display quality
CN101952876AInactive Publication Date: 2011-01-19SHARP KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHARP KK
Publication Date
2011-01-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

There is provided a display device that compensates, without being equipped with a frame memory, change in the capacitance value of an electro-optical element, such as a liquid crystal or the like, occurring with change in the voltage applied to the electro-optical element. The response speed of the display device is also improved. For each of pixel formation portions (A1j, A2j), a frame period is divided into a first period and a second period. In the frame period, a target voltage is applied to the pixel formation portions (A1j, A2j), the target voltage being a voltage having either one of positive and negative polarities relative to the voltage level (Com) of an opposing electrode. In the first period of the frame period, a TFT is brought into a conductive state and a voltage corresponding to the target voltage is applied to a source line (Sj), thereby applying, to a pixel electrode of the pixel formation portions (A1j, A2j), a voltage having the another polarity relative to the voltage level (Com) of the opposing electrode. In the second period of the frame period, the TFT is brought into a non-conductive state and the voltage of an auxiliary capacitor wiring (Ck) is changed from the another polarity to the one polarity relative to the voltage level of the opposing electrode, thereby applying the target voltage to the pixel formation portions (A1j, A2j).
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Description

technical field

[0001] The present invention relates to a display device such as a liquid crystal display device and a driving method thereof. Background technique

[0002] In recent years, liquid crystal display devices using TFT (Thin Film Transistor: Thin Film Transistor), such as notebook computers, mobile phones, and liquid crystal televisions, have become widespread. In a liquid crystal display device using TFTs, in order to control the display state of liquid crystals, a drive circuit called a "source driver" supplies voltage to the liquid crystals. For example, in Japanese Patent Application Laid-Open No. 2002-351409, it is disclosed that Figure 18 The invention of the liquid crystal display device of the structure shown. In this liquid crystal display device, a source driver 907 including a plurality of source driver ICs 908 is provided, and a voltage is supplied from the source driver 907 to the liquid crystal.

[0003] Figure 8 It is a circuit diagram showing...

Claims

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