Display Device
AssigneeHitachi Displays, Ltd.
InventorsNorio Mamba, Tsutomu Furuhashi, Toshiyuki Kumagai
Life of this patent
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Abstract
A TFT element for ambient light detection and a TFT element for temperature detection are connected in series. In a first period, a first switch element is off, and a second switch element is at a hi side, so that a threshold voltage of the TFT element for temperature detection is detected. In a second period, a first switch element is on, and a second switch element is at a low side, so that temperature is detected. In a third period, a first switch element is on, and a second switch element is at a hi side, so that ambient light is detected. An input voltage and a control voltage to each of the TFT elements are set by a voltage controller provided in a drive circuit based on the threshold voltage.
Claims13
A display device, comprising:
- a display panel on which a plurality of pixels are arranged in a matrix pattern,
- a current-voltage converter and a temperature detector disposed in the periphery of the display panel, and
- a drive circuit that supplies a control signal to each of the current-voltage converter and the temperature detector, and drive the pixels,
- wherein a voltage controller is provided in the drive circuit, and
- the voltage controller detects a threshold voltage of the temperature detector, and sets an input voltage and a control voltage to each of the current-voltage converter and the temperature detector based on the threshold voltage.
A display device, comprising:
- a display panel on which a plurality of pixels are arranged in a matrix pattern,
- an ambient light detector and a temperature detector disposed in the periphery of the display panel, and
- a drive circuit that supplies a control signal to each of the ambient light detector and the temperature detector, and drive the pixels,
- wherein a voltage controller is provided in the drive circuit, and
- the voltage controller detects a threshold voltage of the temperature detector, and determines an input voltage and a control voltage to each of the ambient light detector and the temperature detector based on the threshold voltage.
Dependencies are inferred from the claim text.