Abstract: System, device, and method for receiving or sensing touch or light input to an emissive display such as to a OLED display using the same or different sensors as are used to sense and maintain a pixel luminance. Penlight and touch screen data input system and method for display. A sidelight illuminated display and touch panel input device. Method and device for reading display pixel emission and ambient luminance levels. Emissive display having sensing for luminance stabilization and user light or touch screen input. Method and device for emissive display using shielded or partially shielded sensors. Emissive pixel display device characterized in that photon sensors are disposed within pixels and operated to sense photons emitted by emitter within pixel and ambient photons emitted by sources outside pixel, sensed internally emitted photons being for luminance feedback control and sensed ambient photons being used to detect external light source or sources.

Abstract: The embodiments of the present invention provide a flat panel display having a plurality of pixels, each comprising a light-emitting device configured to emit light in accordance with a current flowing through the light-emitting device, a transistor coupled to the light-emitting device and configured to provide the current through the light-emitting device, the current increasing with a ramp voltage applied to a control terminal of the transistor, and a switching device configured to switch off in response to the luminance of the light-emitting device having reached a specified level, thereby disconnecting the ramp voltage from the transistor and locking the brightness at the specified level. The switching device is further configured to stay off thereby allowing the luminance of the light-emitting device to be kept at the specified level until the pixel is rewritten in a different frame.

Abstract: A method of controlling an array of pixels in an active matrix display to a predetermined emission level is provided. The pixels are arranged in a plurality of rows and a plurality of columns, each pixel having an active matrix element. The method makes use of a plurality of sensors each having a measurable sensor parameter and at least one pixel driver. Light emission is varied from a plurality of pixels in a first row using the pixel driver and the active matrix elements in the pixels. Light emission is received from the pixels at the sensors and a measured value of the measurable sensor parameter is obtained responsive to the received light emission. For each of the plurality of pixels, a control signal is generated for the pixel to maintain constant emission from the light source at the predetermined emission level.

Abstract: The present invention uses an open loop feedback technique to control emissive pixels of a printhead of a printer. The open loop feedback technique involves integrating the light intensity of the emissive pixel over a predetermined period of time, averaging the integrated value, comparing the averaged value to a threshold value, and adjusting the input voltage to the OLED of the pixel based on the comparison.

Abstract: A method of controlling an array of pixels in an active matrix display to a predetermined emission level is provided. The pixels are arranged in a plurality of rows and a plurality of columns, each pixel having an active matrix element. The method makes use of a plurality of sensors each having a measurable sensor parameter and at least one pixel driver. Light emission is varied from a plurality of pixels in a first row using the pixel driver and the active matrix elements in the pixels. Light emission is received from the pixels at the sensors and a measured value of the measurable sensor parameter is obtained responsive to the received light emission. For each of the plurality of pixels, a control signal is generated for the pixel to maintain constant emission from the light source at the predetermined emission level.

Abstract: Emission from a pixel is received by a sensor. The sensor is coupled to a control unit that receives or determines a value of the sensor's measurable parameter during operation of the pixel. A target value is coupled to the control unit, allowing the control unit to compare the measurable sensor parameter and the target value. The control unit is coupled to a pixel driver operable to alter the emission from the pixel. The pixel driver may vary the emission from the pixel until the measurable sensor parameter indicates that the target value has been achieved. The target value may be determined based on a calibration of the sensor. A plurality of target values may be stored in a look-up table.

Abstract: Emission from a pixel is received by a sensor. The sensor is coupled to a control unit that receives or determines a value of the sensor's measurable parameter during operation of the pixel. A target value is coupled to the control unit, allowing the control unit to compare the measurable sensor parameter and the target value. The control unit is coupled to a pixel driver operable to alter the emission from the pixel. The pixel driver may vary the emission from the pixel until the measurable sensor parameter indicates that the target value has been achieved. The target value may be determined based on a calibration of the sensor. A plurality of target values may be stored in a look-up table.