Display apparatus, driving method for display apparatus and electronic apparatus
View Patent ↗Disclosed herein is a display apparatus, including: a display panel having 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 temperature detection section configured to detect the temperature of the display panel; and a control section configured to control the period of the mobility correction process based on a result of the detection by the temperature detection section.
1. A display apparatus, comprising:
a display panel 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;
a temperature detection section configured to detect the temperature of said display panel; and
a control section configured to control the period of the mobility correction process based on a result of the detection by said temperature 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 temperature 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 temperature of said display panel and the period of the mobility correction process and varies the period of the mobility correction process by acquiring period information corresponding to the temperature information detected by said temperature 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 display panel 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, comprising the steps of:
detecting the temperature of said display panel; and
controlling the period of the mobility correction process based on a result of the detection.
6. An electronic apparatus, comprising:
a display apparatus including
a display panel 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,
a temperature detection section configured to detect the temperature of said display panel, and
a control section configured to control the period of the mobility correction process based on a result of the detection by said temperature detection section.
7. The driving method according to claim 5 , further comprising:
generating, by a pulse production section, 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 temperature detection section.
8. The driving method according to claim 7 , further comprising:
controlling 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.
9. The driving method according to claim 7 , further comprising:
storing, by a storage section which is included in said control section, a table representative of a corresponding relationship between the temperature of said display panel and the period of the mobility correction process; and
controlling, by said control section, the period of the mobility correction process by acquiring period information corresponding to the temperature information detected by said temperature detection section from said table and adjusting the pulse width of the pulse signal based on the period information.
10. The electronic apparatus according to claim 6 , 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 temperature 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 temperature of said display panel and the period of the mobility correction process and varies the period of the mobility correction process by acquiring period information corresponding to the temperature information detected by said temperature detection section from said table and adjusting the pulse width of the pulse signal based on the period information.