Active matrix display device, its driving method, and display element

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a counter electrode;
• a display medium interposed between the pixel electrodes and the counter electrode;
• and storage capacitance formed between the pixel electrodes and the common electrodes, a plurality of the common electrodes that are connection destinations of the storage capacitance being connected to the pixel electrodes of a plurality of pixels belonging to one of the scanning electrodes,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Cst, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• αgd and αst represented by
• αgd=Cgd/Ctot, αst=Cst/Ctot (Formula 1)
• are set to be different values between a portion close to feeding ends in a screen and a portion away therefrom.

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a display medium interposed between the pixel electrodes and the common electrodes;
• and storage capacitance formed between electrodes, other than the common electrodes opposing the pixel electrodes via the display medium and the scanning electrodes of the stage concerned, and the pixel electrodes,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Clc, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• αgd and αlc represented by
• αgd=Cgd/Ctot, αlc=Clc/Ctot (Formula 6)
• are set to be different values between a portion close to feeding ends in a screen and a portion away therefrom.

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a display medium interposed between the pixel electrodes and the common electrodes;
• and storage capacitance formed between electrodes, other than the common electrodes opposing the pixel electrodes via the display medium and the scanning electrodes of the stage concerned, and the pixel electrodes, a plurality of the common electrodes opposing the pixel electrodes of a plurality of pixels belonging to one of the scanning electrodes via the display medium,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Clc, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• αgd and αlc represented by
• αgd=Cgd/Ctot, αlc=Clc/Ctot (Formula 6)
• are set to be different values between a portion close to feeding ends in a screen and a portion away therefrom.

A display apparatus comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes, video signal electrodes;
• common electrodes;
• a counter electrode;
• a display medium interposed between the pixel electrodes and the counter electrodes;
• and storage capacitance formed between the pixel electrodes and the common electrodes,
• wherein a capacitive coupling voltage from the scanning electrode, and a capacitive coupling voltage from the common electrode are allowed to have a distribution in a screen, whereby flickering and a brightness gradient are corrected simultaneously.

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes, video signal electrodes;
• common electrodes;
• a display medium interposed between the pixel electrodes and the common electrodes;
• and storage capacitance formed between electrodes, other than the common electrodes opposing the pixel electrodes via the display medium and the scanning electrodes of the stage concerned, and the pixel electrodes,
• wherein a capacitive coupling voltage from the scanning electrode, and a capacitive coupling voltage from the common electrode are allowed to have a distribution in a screen, whereby flickering and a brightness gradient are corrected simultaneously.

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes, video signal electrodes;
• common electrodes;
• a counter electrode;
• a display medium interposed between the pixel electrodes and the counter electrode;
• and storage capacitance formed between the pixel electrodes and either of the common electrodes,
• wherein a plurality of the common electrodes that are connection destinations of the storage capacitance are connected to the pixel electrodes of a plurality of pixels belonging to one of the scanning electrodes.

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes, video signal electrodes;
• common electrodes;
• and a display medium interposed between the pixel electrodes and the common electrodes,
• wherein a plurality of the common electrodes oppose the pixel electrodes of a plurality of pixels belonging to one of the scanning electrodes via the display medium.

A display element, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a counter electrode;
• a display medium interposed between the pixel electrodes and the counter electrode;
• and storage capacitance formed between the pixel electrodes and the common electrodes,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Cst, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• αgd and αst represented by
• αgd=Cgd/Ctot, αst=Cst/Ctot (Formula 1)
• are set to be different values between a portion close to feeding ends in a screen and a portion away therefrom.

A display element, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a counter electrode;
• a display medium interposed between the pixel electrodes and the counter electrode;
• and storage capacitance formed between the pixel electrodes and either of the common electrodes, a plurality of the common electrodes that are connection destinations of the storage capacitance being connected to the pixel electrodes of a plurality of pixels belonging to one of the scanning electrodes,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Cst, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• αgd and αst represented by
• αgd=Cgd/Ctot, αst=Cst/Ctot (Formula 1)
• are set to be different values between a portion close to feeding ends in a screen and a portion away therefrom.

A display element, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a display medium interposed between the pixel electrodes and the common electrodes;
• and storage capacitance formed between electrodes, other than the common electrodes opposing the pixel electrodes via the display medium and the scanning electrodes of the stage concerned, and the pixel electrodes,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Clc, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• αgd and αlc represented by
• αgd=Cgd/Ctot, αlc=Clc/Ctot (Formula 6)
• are set to be different values between a portion close to feeding ends in a screen and a portion away therefrom.

A display element, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a display medium interposed between the pixel electrodes and the common electrodes;
• and storage capacitance formed between electrodes, other than the common electrodes opposing the pixel electrodes via the display medium and the scanning electrodes of the stage concerned, and the pixel electrodes, a plurality of the common electrodes opposing the pixel electrodes of a plurality of pixels belonging to one of the scanning electrodes via the display medium,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Clc, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• αgd and αlc represented by
• αgd=Cgd/Ctot, αlc=Clc/Ctot (Formula 6)
• are set to be different values between a portion close to feeding ends in a screen and a portion away therefrom.

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a counter electrode;
• a display medium interposed between the pixel electrodes and the counter electrodes;
• and storage capacitance formed between the pixel electrodes and the common electrodes, the scanning electrodes being supplied with a power only from one side of a display region, a potential of the common electrodes being fixed at least on a side opposite to the side where the scanning electrodes are supplied with a power in the display region,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Cst, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• when a value of αgd represented by
• αgd=Cgd/Ctot (Formula 101)
• in a portion furthest from feeding ends of the scanning electrodes in a display region is αgd(F), there is a position where the value of αgd becomes larger than αgd(F) between the portion furthest from the feeding ends of the scanning electrodes in the display region and a portion closest thereto.

A display apparatus, comprising:

• a plurality of pixel electrodes arranged in a matrix;
• switching elements connected thereto;
• scanning electrodes;
• video signal electrodes;
• common electrodes;
• a display medium interposed between the pixel electrodes and the common electrodes;
• and storage capacitance formed between electrodes, other than the common electrodes opposing the pixel electrodes via the display medium and the scanning electrodes of the stage concerned, and the pixel electrodes, the scanning electrodes being supplied with a power only from one side of a display region, a potential of the common electrodes being fixed at least on a side opposite to the side where the scanning electrodes are supplied with a power in the display region,
• wherein, in a case where a scanning electrode-pixel electrode capacitance between the pixel electrodes and the scanning electrodes is represented by Cgd, a common electrode-pixel electrode capacitance between the pixel electrodes and the common electrodes is represented by Clc, and a total capacitance connected electrically to the pixel electrodes is represented by Ctot,
• when a value of αgd represented by
• αgd=Cgd/Ctot (Formula 101)
• in a portion furthest from feeding ends of the scanning electrodes in a display region is αgd(F), there is a position where the value of αgd becomes larger than αgd(F) between the portion furthest from the feeding ends of the scanning electrodes in the display region and a portion closest thereto.