Semiconductor display device and driving method

A semiconductor display device comprising:

• a table in which a relationship between a gray scale level of a video signal and a subframe period for light emission is stored;
• a controller for converting the video signal in accordance with the table;
• and
• a panel of which a pixel gray scale level is controlled by the converted video signal,
• wherein the subframe period for light emission is determined based on a subframe ratio RSF, and
• wherein the subframe ratio RSF and a sharing ratio Rsh determined by a frame frequency satisfy RSF=(1−Rsh)/(2−Rsh).

A semiconductor display device comprising:

• a table in which a relationship between a gray scale level of a video signal and a subframe period for light emission is stored;
• a controller for converting the video signal in accordance with the table;
• and
• a panel of which a pixel gray scale level is controlled by the converted video signal,
• wherein the subframe period for light emission is determined based on a subframe ratio RSF in middle and highest gray scale groups when a total gray scale level is equally divided into three, and
• wherein the subframe ratio RSF is calculated based on a sharing ratio Rsh determined by a frame frequency.

A semiconductor display device comprising:

• a table in which a relationship between a gray scale level of a video signal and a subframe period for light emission is stored;
• a controller for converting the video signal in accordance with the table;
• and
• a panel of which a pixel gray scale level is controlled by the converted video signal,
• wherein the subframe period for light emission is determined based on a subframe ratio RSF in middle and highest gray scale groups when a total gray scale level is equally divided into three, and
• wherein the subframe ratio RSF and a sharing ratio Rsh determined by a frame frequency satisfy RSF=(1−Rsh)/(2−Rsh).

A method of driving a semiconductor display device comprising:

• dividing one frame period into a plurality of subframe periods;
• calculating a subframe ratio RSF in accordance with a sharing ratio Rsh determined by a frame frequency;
• and
• determining a subframe period for light emission in the plurality of subframe periods based on the subframe ratio RSF.

A method of driving a semiconductor display device comprising:

• dividing one frame period into a plurality of subframe periods;
• calculating a subframe ratio RSF in accordance with a sharing ratio Rsh determined by a frame frequency;
• and
• determining a subframe period for light emission in the plurality of subframe periods based on the subframe ratio RSF,
• wherein the subframe ratio RSF and the sharing ratio Rsh satisfy RSF=(1−Rsh)/(2−Rsh).

A method of driving a semiconductor display device comprising:

• dividing one frame period into a plurality of subframe periods;
• calculating a subframe ratio RSF in accordance with a sharing ratio Rsh determined by a frame frequency;
• and
• determining a subframe period for light emission in the plurality of subframe periods based on the subframe ratio RSF in middle and highest gray scale groups when a total gray scale level is equally divided into three.

A method of driving a semiconductor display device comprising:

• dividing one frame period into a plurality of subframe periods;
• calculating a subframe ratio RSF in accordance with a sharing ratio Rsh determined by a frame frequency;
• and
• determining a subframe period for light emission in the plurality of subframe periods based on the subframe ratio RSF in middle and highest gray scale groups when a total gray scale level is equally divided into three,
• wherein the subframe ratio RSF and the sharing ratio Rsh satisfy RSF=(1−Rsh)/(2−Rsh).

A semiconductor display device comprising:

• a table in which a relationship between a gray scale level of a video signal and a subframe period for light emission is stored;
• a controller for generating a control signal in accordance with the table;
• and
• a panel of which a pixel gray scale level is controlled by the control signal,
• wherein the subframe period for light emission is determined based on a subframe ratio RSF, and
• wherein the subframe ratio RSF is calculated based on a sharing ratio Rsh determined by a frame frequency.

A semiconductor display device comprising:

• a table in which a relationship between a gray scale level of a video signal and a subframe period for light emission is stored;
• a controller for generating a control signal in accordance with the table;
• and
• a panel of which a pixel gray scale level is controlled by the control signal,
• wherein the subframe period for light emission is determined based on a subframe ratio RSF, and wherein the subframe ratio RSF and a sharing ratio Rsh determined by a frame frequency satisfy RSF=(1−Rsh)/(2−Rsh).