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US 8,284,178 B2Granted
Display panel module and electronic apparatus
AssigneeSony Corporation
InventorsJunichi Yamashita, Katsuhide Uchino
Life of this patent
Estimating the term…
Abstract
A self-light-emission-type display panel module employs: a pixel array section including pixel areas laid out to form a two dimensional matrix in a display area to serve as pixel areas each having a signal holding capacitor, a device driving transistor, and a signal sampling transistor; a first driving section; a second driving section; and a third driving section.
Claims8
A self-light-emission-type display panel module comprising:
- a pixel array section including pixel areas laid out to form a two 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 initial time 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 a highest electric potential during a time span between said start of said period for compensating said device driving transistor and an initial portion of a light emission period, and
- a third driving voltage having an intermediate electric potential after said initial portion of said light emission period.
8 more elements
A self-light-emission-type display panel module comprising:
- a pixel array section including pixel areas laid out to form a two 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 control an operation to supply a driving voltage to said device driving transistor and an operation to stop said operation to supply a driving voltage to 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 high-level driving voltage having a relatively high electric potential during a time span between the start of a characteristic compensation period and an initial portion of a light emission period, and
- a low-level driving voltage having a relatively low electric potential after said initial portion of said light emission period.
9 more elements
A self-light-emission-type display panel module comprising:
- a pixel array section including pixel areas laid out to form a two 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 decrease an electric potential appearing at said control electrode of said device driving transistor through a coupling effect exercised after an initial portion of a light emission period.
5 more elements
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 two 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 initial time 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 a highest electric potential during a time span between said start of said period for compensating said device driving transistor and an initial portion of a light emission period, and
- a third driving voltage having an intermediate electric potential after said initial portion 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.
11 more elements
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 two 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 specific one of the two electrodes of said signal holding capacitor and a specific main electrode connected to the other 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 control an operation to supply a driving voltage to said device driving transistor and an operation to stop said operation to supply a driving voltage to 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 high-level driving voltage having a relatively high electric potential during a time span between the start of a characteristic compensation period and an initial portion of a light emission period, and
- a low-level driving voltage having a relatively low electric potential after said initial portion 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.
12 more elements
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 two 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 decrease an electric potential appearing at said control electrode of said device driving transistor through a coupling effect exercised after an initial portion 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.
8 more elements
Dependencies are inferred from the claim text.