Electro-luminescence display and drving method thereof

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

Reexamination Certificate

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Details

C345S077000, C345S078000, C345S089000, C345S090000, C345S092000, C315S169100, C315S169300

Reexamination Certificate

active

09667003

ABSTRACT:
An electro-luminescence display which obtains proper color realization even though identical data driving waveforms are applied to each group of R, G and B pixel cells. In the display, a plurality of data lines cross a plurality of gate lines to define a plurality of pixel cell areas. A plurality of power supply lines pass through the pixel cell areas. A switching device is provided in each pixel cell area in such a manner to be electrically connected to the gate line and the data line. A plurality of driving devices are patterned based on a ratio of channel width to channel length in accordance with the type of pixel cell area. Each driving device having a gate connected to one electrode of the switching device and a source connected to the power supply line at each of the pixel cell areas. A plurality of EL diodes are connected to the plurality of driving devices, respectively. A wiring is commonly connected to the plurality of power supply lines. The R, G and B pixel cells are independently driven using different currents, although a common voltage is received by the driving devices.

REFERENCES:
patent: 4644338 (1987-02-01), Aoki et al.
patent: 4843441 (1989-06-01), Willard
patent: 5177406 (1993-01-01), Troxell
patent: 5550066 (1996-08-01), Tang et al.
patent: 5670792 (1997-09-01), Utsugi et al.

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