Display apparatus, driving method for display apparatus and electronic apparatus
View Patent ↗Disclosed herein is a display apparatus, including: a pixel array section configured to have a plurality of pixels arranged in a matrix thereon, each of the pixels including an electro-optical element, a writing transistor, a driving transistor, and a storage capacitor connected between the gate electrode and the source electrode of the driving transistor for storing an image signal written by the writing transistor, each of the pixels carrying out a mobility correction process for applying negative feedback to a potential difference between the gate and the source of the driving transistor with a correction amount determined from current flowing to the driving transistor; a detection section configured to detect variation of a characteristic of any transistor in the pixels; and a control section configured to control the period of the mobility correction process based on a result of the detection by the detection section.
1. A display apparatus, comprising:
a pixel array section including
a plurality of pixels arranged in a matrix thereon, each of said pixels including
an electro-optical element,
a writing transistor for writing an image signal,
a driving transistor for driving said electro-optical element in response to the image signal written by said writing transistor, and
a storage capacitor connected between the gate electrode and the source electrode of said driving transistor for storing the image signal written by said writing transistor,
each of said pixels carrying out a mobility correction process for applying negative feedback to a potential difference between the gate and the source of said driving transistor with a correction amount determined from current flowing to said driving transistor;
a detection section configured to detect variation of a characteristic of any transistor in said pixels; and
a control section configured to control the period of the mobility correction process based on a result of the detection by said detection section.
2. The display apparatus according to claim 1 , wherein said control section includes
a pulse production section configured to produce a pulse signal which defines the period of the mobility correction process and varies the period of the mobility correction process by adjusting the pulse width of the pulse signal based on the result of the detection by said detection section.
3. The display apparatus according to claim 2 , wherein said control section varies the period of the mobility correction process by adjusting the changing timing of the pulse signal which defines an end timing of the period of the mobility correction process.
4. The display apparatus according to claim 2 , wherein said control section includes
a storage section configured to store a table representative of a corresponding relationship between the result of the detection by said detection section and the period of the mobility correction process and varies the period of the mobility correction process by acquiring period information corresponding to the result of the detection by said detection section from said table and adjusting the pulse width of the pulse signal based on the period information.
5. A driving method for a display apparatus which includes
a pixel array section configured to have
a plurality of pixels arranged in a matrix thereon, each of said pixels including
an electro-optical element,
a writing transistor for writing an image signal,
a driving transistor for driving said electro-optical element in response to the image signal written by said writing transistor, and
a storage capacitor connected between the gate electrode and the source electrode of said driving transistor for storing the image signal written by said writing transistor,
each of said pixels carrying out a mobility correction process for applying negative feedback to a potential difference between the gate and the source of said driving transistor with a correction amount determined from current flowing to said driving transistor, comprising the steps of:
detecting variation of a characteristic of any transistor in said pixels; and
controlling the period of the mobility correction process based on a result of the detection.
6. The driving method for the display apparatus according to claim 5 , further comprising:
producing, by a pulse production section included in said control section, a pulse signal which defines the period of the mobility correction process; and
changing the period of the mobility correction process by adjusting the pulse width of the pulse signal based on the result of the detection by said detection section.
7. The driving method for the display apparatus according to claim 6 , further comprising varying the period of the mobility correction process by adjusting the changing timing of the pulse signal which defines an end timing of the period of the mobility correction process.
8. The driving method for the display apparatus according to claim 6 , further comprising:
storing, by a storage section included in said control section, a table representative of a corresponding relationship between the result of the detection by said detection section and the period of the mobility correction process;
varying the period of the mobility correction process by acquiring period information corresponding to the result of the detection by said detection section from said table; and
adjusting the pulse width of the pulse signal based on the period information.
9. An electronic apparatus, comprising:
a display apparatus including
a pixel array section configured to have
a plurality of pixels arranged in a matrix thereon, each of said pixels including
an electro-optical element,
a writing transistor for writing an image signal,
a driving transistor for driving said electro-optical element in response to the image signal written by said writing transistor, and
a storage capacitor connected between the gate electrode and the source electrode of said driving transistor for storing the image signal written by said writing transistor,
each of said pixels carrying out a mobility correction process for applying negative feedback to a potential difference between the gate and the source of said driving transistor with a correction amount determined from current flowing to said driving transistor,
a detection section configured to detect variation of a characteristic of any transistor in said pixels, and
a control section configured to control the period of the mobility correction process based on a result of the detection by said detection section.
10. The electronic apparatus according to claim 9 , wherein said control section includes
a pulse production section configured to produce a pulse signal which defines the period of the mobility correction process and varies the period of the mobility correction process by adjusting the pulse width of the pulse signal based on the result of the detection by said detection section.
11. The electronic apparatus according to claim 10 , wherein said control section varies the period of the mobility correction process by adjusting the changing timing of the pulse signal which defines an end timing of the period of the mobility correction process.
12. The electronic apparatus according to claim 10 , wherein said control section includes
a storage section configured to store a table representative of a corresponding relationship between the result of the detection by said detection section and the period of the mobility correction process and varies the period of the mobility correction process by acquiring period information corresponding to the result of the detection by said detection section from said table and adjusting the pulse width of the pulse signal based on the period information.
13. A display apparatus, comprising:
pixel array means for having
a plurality of pixels arranged in a matrix thereon, each of said pixels including
an electro-optical element,
a writing transistor for writing an image signal,
a driving transistor for driving said electro-optical element in response to the image signal written by said writing transistor, and
a storage capacitor connected between the gate electrode and the source electrode of said driving transistor for storing the image signal written by said writing transistor,
each of said pixels carrying out a mobility correction process for applying negative feedback to a potential difference between the gate and the source of said driving transistor with a correction amount determined from current flowing to said driving transistor;
detection means for detecting variation of a characteristic of any transistor in said pixels; and
control means for controlling the period of the mobility correction process based on a result of the detection by said detection means.
14. The display apparatus according to claim 13 , wherein said control section includes
a pulse production means for producing a pulse signal which defines the period of the mobility correction process and for varying the period of the mobility correction process by adjusting the pulse width of the pulse signal based on the result of the detection by said detection section.
15. The display apparatus according to claim 14 , wherein said control means for varying the period of the mobility correction process by adjusting the changing timing of the pulse signal which defines an end timing of the period of the mobility correction process.
16. The display apparatus according to claim 14 , wherein said control section includes
a storage section means for storing a table representative of a corresponding relationship between the result of the detection by said detection section and the period of the mobility correction process and for varying the period of the mobility correction process by acquiring period information corresponding to the result of the detection by said detection section from said table and adjusting the pulse width of the pulse signal based on the period information.