ELECTROLUMINESCENT DISPLAY AND METHOD OF SENSING ELECTRICAL CHARACTERISTICS OF ELECTROLUMINESCENT DISPLAY
First Claim
1. An electroluminescent display comprising:
- a display panel including a plurality of pixels, a plurality of gate lines, and a plurality of data lines; and
a driver integrated circuit connected to the data line through a channel terminal,wherein the driver integrated circuit includes;
a data voltage generator configured to generate a data voltage to be supplied to the pixel;
a first switch connected between the channel terminal and the data voltage generator;
a sensor configured to sense electrical characteristics of the pixel; and
a second switch connected between the channel terminal and the sensor.
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Abstract
An electroluminescent display and a method of sensing electrical characteristics of the electroluminescent display are disclosed. The electroluminescent display includes a display panel including a plurality of pixels, a plurality of gate lines, and a plurality of data lines and a driver integrated circuit connected to the data line through a channel terminal. The driver integrated circuit includes a data voltage generator configured to generate a data voltage to be supplied to the pixel, a first switch connected between the channel terminal and the data voltage generator, a sensor configured to sense electrical characteristics of the pixel, and a second switch connected between the channel terminal and the sensor.
30 Citations
14 Claims
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1. An electroluminescent display comprising:
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a display panel including a plurality of pixels, a plurality of gate lines, and a plurality of data lines; and a driver integrated circuit connected to the data line through a channel terminal, wherein the driver integrated circuit includes; a data voltage generator configured to generate a data voltage to be supplied to the pixel; a first switch connected between the channel terminal and the data voltage generator; a sensor configured to sense electrical characteristics of the pixel; and a second switch connected between the channel terminal and the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of sensing electrical characteristics of an electroluminescent display including a plurality of pixels each including a driving thin film transistor (TFT) including a control electrode connected to a first node, a first electrode connected to a high potential driving power, and a second electrode connected to a second node and an organic light emitting diode (OLED) connected between the second node and a low potential driving power, the method comprising:
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during a first programming period, applying a first data voltage to the first node and the second node through a data line to turn on the driving TFT; during a degradation tracking period following the first programming period, applying a driving current to the OLED from the driving TFT to set a voltage of the second node depending on a degradation of the OLED; during a second programming period following the degradation tracking period, applying a second data voltage higher than the first data voltage to the second node through the data line; and during a sensing period following the second programming period, reading out a change in the voltage of the second node, which decreases depending on the driving current, through the data line. - View Dependent Claims (12)
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13. A method of sensing electrical characteristics of an electroluminescent display including a plurality of pixels each including a driving thin film transistor (TFT) including a control electrode connected to a first node, a first electrode connected to a high potential driving power, and a second electrode connected to a second node and an organic light emitting diode (OLED) connected between the second node and a low potential driving power, the method comprising:
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during an initialization period, applying a data voltage higher than an threshold voltage of the OLED to the second node through a data line to initialize the second node; and during a sensing period following the initialization period, reading out a change in a voltage of the second node, which decreases as the data voltage is discharged through the OLED, through the data line. - View Dependent Claims (14)
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Specification