Light emitting module and method of driving the same, and optical sensor
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Jun Koyama
Life of this patent
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Abstract
The object of the present invention is to provide a light emitting module which is excellent in visibility and can reduce power consumption. The light emitting module includes a light emitting device containing at least a pixel section 101 and a sensor section 104, which are formed on the same insulating body, and further includes means for sensing illuminance of a use environment with the sensor section 104 and for adjusting luminance of a light emitting element according to the illuminance to keep a ratio of the luminance to the illuminance of the use environment at a constant value.
Claims35
1-46. (canceled)
An electronic device comprising:
- a light emitting module comprising:
- a pixel section comprising a current control TFT and a light emitting element over and electrically connected to the current control TFT;
- and
- a sensor section comprising a reset TFT and a photodiode over and electrically connected to the reset TFT;
- a correction circuit and a driver circuit mounted in a printed wiring board, electrically connected to the pixel section and the sensor section through wirings;
- wherein the correction circuit adjusts luminance of the light emitting element according to environmental illuminance sensed by the sensor section and for keeping a ratio of the luminance to the environmental illuminance at a constant value by the correction circuit,
- wherein the sensor section is disposed outside the pixel section.
An electronic device comprising:
- a light emitting module comprising:
- a pixel section comprising a current control TFT and a thin film light emitting element over and electrically connected to the current control TFT;
- a sensor section sensing environmental illuminance, comprising a reset TFT and a thin film photodiode over and electrically connected to the reset TFT,
- a correction circuit and a driver circuit mounted on a printed wiring board, electrically connected to the pixel section and the sensor section through wirings;
- wherein the sensor section is disposed outside said pixel section.
An electronic device comprising:
- a light emitting module comprising:
- a pixel section comprising a current control TFT and a light emitting element over and electrically connected to the current control TFT;
- a driver circuit comprising a CMOS circuit comprising an n-channel type TFT and a p-channel type TFT;
- a sensor section comprising a reset TFT and a photodiode over and electrically connected to the reset TFT;
- a control section comprising a correction circuit, and a memory section mounted in a printed wiring board, electrically connected to the pixel section, the driver circuit and the sensor section through wirings;
- wherein the correction circuit adjusts luminance of the light emitting element according to environmental illuminance sensed by the sensor section and for keeping a ratio of the luminance to the environmental illuminance at a constant value by the correction circuit,
- wherein the sensor section is disposed outside the pixel section.
An electronic device comprising:
- a light emitting module comprising:
- a pixel section comprising a current control TFT and a thin film light emitting element over and electrically connected to the current control TFT;
- a driver circuit comprising a CMOS circuit comprising an n-channel type TFT and a p-channel type TFT;
- a sensor section sensing environmental illuminance, comprising a reset TFT and a thin film photodiode over and electrically connected to the reset TFT,
- a control section comprising a correction circuit, and a memory section mounted on a printed wiring board, electrically connected to the pixel section, the driver circuit and the sensor section through wirings;
- wherein the sensor section is disposed outside said pixel section.
Dependencies are inferred from the claim text.