Brightness feedback display device
AssigneeKinpo Electronics, Inc.
InventorChiang Hung Lin
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Abstract
A brightness feedback display device includes a LCD panel, a plurality of first photo-sensors for sensing the environmental brightness variation of the display device itself. Corresponding sensing signals are delivered to first converters for being converted to first digital reference signals that are delivered to a microprocessor, thereby determining how much brightness of the display panel increases or decreases. Via a light-guiding element and a second photo-sensor installed within the display panel, the light brightness from the display panel is sensed and converted to a second digital reference signal that is compared with the first digital reference signals to determine whether the display brightness is at an optimal value.
Claims11
A brightness feedback display device, comprising:
- a display panel;
- a plurality of first photo-sensors for sensing the environmental brightness variation of the display panel and outputting a plurality of corresponding sensing signals;
- a plurality of first converters, respectively connected to the first photo-sensors and converting the respective sensing signals to a plurality of corresponding first digital reference signals;
- a light-guiding element for receiving and transmitting a light emitted from the display panel;
- a feedback sensing unit having a second photo-sensor and a second converter, the second photo-sensor sensing a light variation of the light-guiding element, and then the second converter converting the sensed light variation of the light-guiding element so as to generate a second digital reference signal;
- and
- a microprocessor for controlling the brightness of the display panel according to the variation of the first and the second digital reference signals.
Dependencies are inferred from the claim text.