DRIVING DEVICE FOR DISPLAY AND DISPLAY USING THE SAME AND DRIVING METHOD OF THE DISPLAY
First Claim
1. A display comprising:
- a display panel that displays an image;
a photodetector configured to detect ambient light; and
an external-brightness detector that outputs an external-brightness signal based on sensing a light detecting node connected to the photodetector, the external-brightness detector outputting the external-brightness signal by sensing a voltage level of the light detecting node in a first mode and by sensing a current level of the light detecting node in a second mode; and
a brightness controller that control s the brightness of the image displayed on the display panel according to the external-brightness signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A driving device for a display and a display using same, and a driving method of the display are provided. The display includes a display panel on which an image is displayed, and at least one optical sensor (photodetector) to detect the intensity of ambient (external) light incident upon the display panel. An external-brightness detector outputs an external-brightness signal based on the intensity of external (ambient) light and a backlight brightness controller changes the brightness of the image displayed (or backlight) on the display panel according to the external-brightness signal. The driving device may be implemented on an integrated circuit adapted to be connected to external-light photodetectors of type 1 or of type 2. The driving device may be may be dynamically configured to generate the external-brightness signal by sensing a voltage level of the light detecting node in a first mode of operation and may be reconfigured to generate the external-brightness signal by sensing a current level of the light detecting node in a second mode.
12 Citations
20 Claims
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1. A display comprising:
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a display panel that displays an image; a photodetector configured to detect ambient light; and an external-brightness detector that outputs an external-brightness signal based on sensing a light detecting node connected to the photodetector, the external-brightness detector outputting the external-brightness signal by sensing a voltage level of the light detecting node in a first mode and by sensing a current level of the light detecting node in a second mode; and a brightness controller that control s the brightness of the image displayed on the display panel according to the external-brightness signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A driving device of a display comprising:
a brightness controller that controls the brightness of an image displayed on a display panel according to an external-brightness signal wherein the external-brightness signal is based upon sensing the voltage level of a light detecting node while operating in a first mode, and based upon sensing the current level of the light detecting node while operating in a second mode. - View Dependent Claims (12, 13, 14, 15)
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16. A driving method of a display comprising:
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reading external-light detected from a first photodetector by sensing a voltage level of a light detecting node connected to the first photodetector and outputting an external-brightness signal based on the read result and controlling the brightness of an image displayed on a display panel according to the external-brightness signal while operating in a first mode; and while operating in a second mode, reading external-light detected from a second photodetector by sensing a current level of the light detecting node connected to the second photodetector and outputting the external-brightness signal based on the read result and controlling the brightness of an image displayed on the display panel according to the external-brightness signal. - View Dependent Claims (17, 18, 19, 20)
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Specification