High-performance emissive display device for computers, information appliances, and entertainment systems
First Claim
1. An information appliance comprising:
- a flat panel display device comprising a plurality of active-matrix pixels arranged as a two-dimensional array, each pixel including an organic light emitting diode emitter, an emitter drive circuit receiving an input image data for each pixel and generating a pixel drive signal intended to produce a corresponding target pixel luminance during a frame time, and an emitter luminance sensor and measurement circuit that measures an electrical parameter indicative of the actual luminance of each pixel over a portion of a measurement display frame time; and
a display logic subsystem coupled to the flat panel display device and receiving the pixel luminance related electrical parameter for each pixel and generating a correction to be applied during a frame time subsequent to the measurement display frame time to the input image data for each pixel based on a difference between the target pixel luminance and the measured pixel luminance.
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Accused Products
Abstract
Information appliance device and method for operating display associated with information appliance. Information appliance includes display device comprising plurality of active-matrix pixels arranged as two-dimensional array, each pixel including a photon emitter, emitter drive circuit receiving input image data for each pixel and generating pixel drive signal intended to produce a corresponding target pixel luminance during frame time, and emitter luminance sensor and measurement circuit that measures electrical parameter indicative of actual luminance of each pixel over portion of measurement display frame time; and display logic coupled to display and receiving pixel luminance related electrical parameter for each pixel and generating correction for application subsequent time period to input image data for each pixel based on difference between target pixel luminance and measured pixel luminance. Photon emitter may be OLED, electroluminescent, plasma or other emissive device in flat panel display. Information appliance may include computer monitor, TV, or portable device.
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Citations
28 Claims
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1. An information appliance comprising:
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a flat panel display device comprising a plurality of active-matrix pixels arranged as a two-dimensional array, each pixel including an organic light emitting diode emitter, an emitter drive circuit receiving an input image data for each pixel and generating a pixel drive signal intended to produce a corresponding target pixel luminance during a frame time, and an emitter luminance sensor and measurement circuit that measures an electrical parameter indicative of the actual luminance of each pixel over a portion of a measurement display frame time; and
a display logic subsystem coupled to the flat panel display device and receiving the pixel luminance related electrical parameter for each pixel and generating a correction to be applied during a frame time subsequent to the measurement display frame time to the input image data for each pixel based on a difference between the target pixel luminance and the measured pixel luminance. - View Dependent Claims (2, 3, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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4. A method of operating a display device of the type having a plurality of active-matrix pixels arranged as a two-dimensional array, each pixel including a light emitting diode emitter and an emitter drive circuit receiving an input image data for each pixel and generating a pixel drive signal intended to produce a corresponding target pixel luminance during each frame display time;
- the method characterized in that the method further includes;
measuring a voltage indicative of a photon flux intercepted by an emitter luminance measurement circuit during at least a portion of a first frame time; and
comparing the measured voltage corresponding to a measured luminance with a reference voltage corresponding to a reference luminance to generate a difference signal and using the difference signal to modify the input image data for each pixel during a subsequent frame display time so that the pixel luminance during the subsequent display frame time will more nearly equal the reference luminance. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- the method characterized in that the method further includes;
Specification