Solomon Systech Limited

Wai-Yan Stephen Lai

Chung Yee Ricky Ng

Wing Chi Stephen Chan

Yiu Sang Lei

Jimmy Chiu

Yuen Pat Lau

Chung Yee Ng

Wai Yu Felix Wong

Hing Kau Stephen Cheung

Wah Chi Raymond Wang

Wai Pak Icarus Choi

Wai Yu Wong

A method of adjusting image intensity to compensate backlight dimming in dynamic backlight control, the method including estimating distortion of an image that corresponds to different mapping index valuesselected from the intensity levelsof an image. The estimated distortion of image represents factors including the quantity of pixelsthat have intensity exceeding a mapping index value; and the amountthat the intensity of each pixel exceeds the corresponding mapping index value. The method further includes selecting from a plurality of schemesfor adjusting image intensity to minimize the estimated distortion obtained from the estimating.

Methods and apparatus of dynamic backlight control

A driving system and method for electroluminescence displays having a matrix of electroluminescence elements arrayed in rows and columns with a control circuit for discharging each anode line to a column equalization bus (CEB), includes connecting the charged anode line to the CEB at the end of activation of each anode line. Discharging and subsequent de-activation of the anode line are allowed by charge-sharing with un-activated anode lines that are to be activated for the next row. This is accomplished by connecting the charged anode line to the CEB. In displaying images, anode lines are activated for a number of time periods according to gray scale or color data. Anode lines are consequently de-activated accordingly at different times during a lighting phase for each row display time. When anode lines are discharged through charge sharing on the CEB, a control circuit maintains the voltage on the CEB below a level that may cause inadvertent activation of the de-activated elements.

Driving system and method for electroluminescence displays

The present invention provides a display system comprising a liquid crystal display (LCD) controller and an organic light emitting diode (OLED) driver circuit. The LCD controller can be a mono super twisted nematic (STN) and gray scale and color thin film transistor (TFT) controller. The LCD controller processes general format data and accordingly generates segment control signals and common control signals. The OLED driver circuit according to a general embodiment of the display system of the present invention comprises an OLED segment driver with a corresponding segment interface adopter processing the segment control signals from the LCD controller, and an OLED common driver with a corresponding common interface adopter processing the common control signals from the LCD controller. According to a further embodiment, the display system further comprises a drive strength selector controlling the drive strength in the OLED segment driver. The display system according to the present invention can also include a drive strength selector controlling the drive strength in the OLED common driver.

OLED driver circuit with selectable LCD controller interface and drive strength

A driving system and its corresponding driving scheme for electroluminescence displays that employs the principle of electric charge conservation and recycling in order to reduce switching current requirement against the system power source. In an electroluminescence display of a matrix of electroluminescence elements arrayed in rows and columns, wherein anodes of the electroluminescence elements on each row being electrically connected to a corresponding anode line, and cathodes of the electroluminescence elements on each column being electrically connected to a corresponding cathode line, a driving system for driving said electroluminescence display comprises a row/column control circuit for lighting at least one of said electroluminescence elements by establishing an electrical route across the power source and the ground in a driving scheme. The driving scheme sequentially scans each of the cathode lines while simultaneously drives at least one of the anode lines during each scanning. The control circuit equalizes electric charges in electroluminescence elements in the cathode line being scanned and in an adjoining cathode line to be scanned subsequently by electrically connecting both cathode lines together before the scanning cycles to the adjoining cathode line.

Driving system and method for electroluminescence display

Growing community of inventors

Hong Kong, China

Wai-Yan Stephen Lai