Display panel module and electronic apparatus

1. A self-light-emission-type display panel module comprising:

a pixel array section including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor, and

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor;

a first driving section configured to assert said signal electric potential on a data signal line;

a second driving section configured to assert an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor; and

a third driving section configured to provide a second control line connected to a second current electrode of said device driving transistor sequentially with the following three different driving voltages:

a first driving voltage having a lowest electric potential during a time span between the start of a no-light emission period and the start of a period for compensating said device driving transistor for characteristic variations,

a second driving voltage having an intermediate electric potential during a time span between said start of said period for compensating said device driving transistor and an initial time of a light emission period, and

a third driving voltage having a highest electric potential after said initial time of said light emission period.

2. The self-light-emission-type display panel module according to claim 1 wherein a period T used by said second driving section to assert said electric-potential write timing signal on said first control line for every pixel gradation is set at a value longer than a mobility compensation time t calculated for a signal electric potential corresponding to said pixel gradation.

3. The self-light-emission-type display panel module according to claim 2 wherein said mobility compensation time t is expressed by the following equation:

t=C /( k·μ·Vsig )

where reference notation k denotes a constant, reference notation μ denotes the mobility of a thin-film transistor and reference notation Vsig denotes said signal electric potential corresponding to said pixel gradation.

4. A self-light-emission-type display panel module comprising:

a pixel array section including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor,

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor, and

a coupling capacitor having a first electrode connected to said control electrode of said device driving transistor and a second electrode connected to a third control line;

a first driving section configured to assert said signal electric potential on a data signal line;

a second driving section configured to assert an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor;

a third driving section configured to provide a second control line connected to a second current electrode of said device driving transistor sequentially with the following two different driving voltages

a first driving voltage having a relatively low electric potential during a time span between the start of a no-light emission period and the start of a period for compensating said device driving transistor for characteristic variations, and

a second driving voltage having a relatively high electric potential after said start of said period for compensating said device driving transistor; and

a fourth driving section configured to provide said third control line sequentially with the following two different driving voltages:

a low-level driving voltage having a relatively low electric potential during a time span between said start of said no-light emission period and an initial time of a light emission period, and

a high-level driving voltage having a relatively high electric potential after said initial time of said light emission period.

5. The self-light-emission-type display panel module according to claim 4 wherein a period T used by said second driving section to assert said electric-potential write timing signal on said first control line for every pixel gradation is set at a value longer than a mobility compensation time t calculated for a signal electric potential corresponding to said pixel gradation.

6. The self-light-emission-type display panel module according to claim 5 wherein said mobility compensation time t is expressed by the following equation:

t=C /( k·μ·Vsig )

where reference notation k denotes a constant, reference notation μ denotes the mobility of a thin-film transistor and reference notation Vsig denotes said signal electric potential corresponding to said pixel gradation.

7. A self-light-emission-type display panel module comprising:

a pixel array section including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having at least

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor, and

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor;

a first driving section configured to assert said signal electric potential on a data signal line;

a second driving section configured to assert an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor; and

a third driving section configured to increase an electric potential appearing at said control electrode of said device driving transistor through a coupling effect exercised after an initial time of a light emission period.

8. An electronic apparatus comprising:

a self-light-emission-type display panel module having

a pixel array section including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor, and

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor,

a first driving section configured to assert said signal electric potential on a data signal line,

a second driving section configured to assert an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor, and

a third driving section configured to provide a second control line connected to a second current electrode of said device driving transistor sequentially with the following three different driving voltages:

a first driving voltage having a lowest electric potential during a time span between the start of a no-light emission period and the start of a period for compensating said device driving transistor for characteristic variations,

a second driving voltage having an intermediate electric potential during a time span between said start of said period for compensating said device driving transistor and an initial time of a light emission period, and

a third driving voltage having a highest electric potential after said initial time of said light emission period;

a system control section configured to control operations of an entire system of said electronic apparatus; and

an operation input section configured to receive operation inputs entered to said system control section.

9. An electronic apparatus comprising:

a self-light-emission-type display panel module having

a pixel array section including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor,

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor, and

a coupling capacitor having a first electrode connected to said control electrode of said device driving transistor and a second electrode connected to a third control line,

a first driving section for asserting said signal electric potential on a data signal line,

a second driving section configured to assert an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor,

a third driving section configured to provide a second control line connected to a second current electrode of said device driving transistor sequentially with the following two different driving voltages

a first driving voltage having a relatively low electric potential during a time span between the start of a no-light emission period and the start of a period for compensating said device driving transistor for characteristic variations, and

a second driving voltage having a relatively high electric potential after said start of said period for compensating said device driving transistor, and

a fourth driving section configured to provide said third control line sequentially with the following two different driving voltages

a low-level driving voltage having a relatively low electric potential during a time span between said start of said no-light emission period and an initial time of a light emission period, and

a high-level driving voltage having a relatively high electric potential after said initial time of said light emission period;

a system control section configured to control operations of an entire system of said electronic apparatus; and

an operation input section configured to receive operation inputs entered to said system control section.

10. An electronic apparatus comprising:

a self-light-emission-type display panel module having

a pixel array section including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having at least

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor, and

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor,

a first driving section configured to assert said signal electric potential on a data signal line,

a second driving section configured to assert an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor, and

a third driving section configured to increase an electric potential appearing at said control electrode of said device driving transistor through a coupling effect exercised after an initial time of a light emission period;

a system control section configured to control operations of an entire system of said electronic apparatus; and

an operation input section configured to receive operation inputs entered to said system control section.

11. A self-light-emission-type display panel module comprising:

pixel array means including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor, and

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor;

first driving means for assert said signal electric potential on a data signal line;

second driving means for asserting an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor; and

third driving means for providing a second control line connected to a second current electrode of said device driving transistor sequentially with the following three different driving voltages:

a first driving voltage having a lowest electric potential during a time span between the start of a no-light emission period and the start of a period for compensating said device driving transistor for characteristic variations,

a second driving voltage having an intermediate electric potential during a time span between said start of said period for compensating said device driving transistor and an initial time of a light emission period, and

a third driving voltage having a highest electric potential after said initial time of said light emission period.

12. A self-light-emission-type display panel module comprising:

pixel array means including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor,

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor, and

a coupling capacitor having a first electrode connected to said control electrode of said device driving transistor and a second electrode connected to a third control line;

first driving means for asserting said signal electric potential on a data signal line;

second driving means for asserting an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor;

third driving means for providing a second control line connected to a second current electrode of said device driving transistor sequentially with the following two different driving voltages:

a first driving voltage having a relatively low electric potential during a time span between the start of a no-light emission period and the start of a period for compensating said device driving transistor for characteristic variations, and

a second driving voltage having a relatively high electric potential after said start of said period for compensating said device driving transistor; and

fourth driving means for providing said third control line sequentially with the following two different driving voltages

a low-level driving voltage having a relatively low electric potential during a time span between said start of said no-light emission period and an initial time of a light emission period, and

a high-level driving voltage having a relatively high electric potential after said initial time of said light emission period.

13. A self-light-emission-type display panel module comprising:

pixel array means including pixel areas laid out to form a 2-dimensional matrix in a display area to serve as pixel areas each having at least

a signal holding capacitor,

a device driving transistor provided with a control electrode connected to a first electrode of said signal holding capacitor and a first current electrode connected to a second electrode of said signal holding capacitor to serve as a transistor for providing a self-light-emitting device connected to said device driving transistor with a driving current having a magnitude according to a voltage stored in said signal holding capacitor, and

a signal sampling transistor for controlling an operation to supply a signal electric potential to said control electrode of said device driving transistor;

first driving means for asserting said signal electric potential on a data signal line;

second driving means for asserting an electric-potential write timing signal on a first control line connected to a control electrode of said signal sampling transistor; and

third driving means for increasing an electric potential appearing at said control electrode of said device driving transistor through a coupling effect exercised after an initial time of a light emission period.