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Removing crosstalk in an organic light-emitting diode display

A light-emitting diode, organic technology, applied in static indicators, electroluminescent light sources, instruments, etc., can solve problems such as display panel crosstalk

Inactive Publication Date: 2007-08-29
LEADIS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Conventional OLED display panels have the disadvantage of creating crosstalk in the display panel

Method used

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  • Removing crosstalk in an organic light-emitting diode display
  • Removing crosstalk in an organic light-emitting diode display
  • Removing crosstalk in an organic light-emitting diode display

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Embodiment Construction

[0030] FIG. 5 illustrates an OLED display panel driven by a driver according to an embodiment of the present invention. The OLED display panel 500 includes an array of OLEDs 102 coupled between rows and columns of the panel 500 . The anode of the OLED 102 is coupled to the columns of the display panel 500 (...C(n-1), C(n), C(n+1), C(n+2)...) and the cathode of the OLED 102 is coupled to To the rows of the display panel 500 (...ROW(n-1), ROW(n), ROW(n+1), and ROW(n+2)...). The OLED display panel 500 is driven by drivers including a row driver 520 and a column driver 140 .

[0031] The row driver 520 includes a row driver control circuit (not shown) configured to switch 124 by closing switch 126 and opening switch 124 through ), RL(n), RL(n+1), RL(n)...) variable resistors 522 to connect with one row of panel 500 (...ROW(n-1), ROW(n) , ROW(n+1), ROW(n+2)...) The cathodes of the associated OLED 102 are coupled to a low voltage (eg, GND) to select the row, or by closing the swi...

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Abstract

The invention provides a driver which includes a plurality of variable resistors RL(n), each coupled to a corresponding one of the rows of the organic light-emitting diode display panel (500), generally between Ground (GND) and the cathodes of the OLEDs (102) on the rows. A variable resistor controller (510) in the driver is coupled to the variable resistors, and adjusts the resistance of the variable resistor coupled to the selected row based upon the display data corresponding to the selected row. The variable resistor controller (510) adjusts the resistance of the variable resistor coupled to the selected row to be inversely proportional to the sum of the display data corresponding to the selected row.

Description

technical field [0001] The present invention relates to an organic light emitting diode (OLED) display panel, and more particularly to driving the OLED display panel without crosstalk. Background technique [0002] OLED display panels generally consist of an array of organic light emitting diodes (OLEDs) with a carbon-based film between two charged electrodes, typically a metal cathode and a transparent anode, usually glass. or other organic material films. Generally, the organic material film is composed of a hole injection layer, a hole transport layer, an emission layer and an electron transport layer. When a voltage is applied to the OLED cell, the injected positive and negative charges recombine in the emissive layer and generate electroluminescent light. Unlike liquid crystal displays (LCDs), which require a backlight, OLED displays are self-emitting devices that emit light without modulating transmitted or reflected light. As a result, OLEDs are brighter, thinner, ...

Claims

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Application Information

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IPC IPC(8): G09G3/30
CPCG09G2320/043G09G2320/0209G09G3/3275G09G2320/0223G09G3/3216G09G2310/0256G09G3/3266G09G3/30H05B33/12G09G3/32G09G3/20
Inventor 金昌云
Owner LEADIS TECH
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