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Method of testing AMOLED driver circuit and system

A driving circuit, active technology, applied in the direction of circuits, electric light sources, electrical components, etc., can solve problems such as unrecyclable, cost increase, and inaccurate test results

Inactive Publication Date: 2007-08-08
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known method can lead to inaccurate test results due to differences in the subjective judgment of testers
The more serious problem is that if a certain driving circuit fails to work normally, the organic light-emitting diode OLED plated on the driving circuit will also be scrapped and cannot be recycled, resulting in an increase in cost

Method used

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  • Method of testing AMOLED driver circuit and system
  • Method of testing AMOLED driver circuit and system
  • Method of testing AMOLED driver circuit and system

Examples

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Embodiment Construction

[0017] The present invention provides a method for testing a driving circuit of an active organic light emitting display before coating organic light emitting diodes. Assume that the active organic light emitting display has N driving circuits for driving N organic light emitting diodes. The active organic light emitting display also includes an input pad, a writing scan line and a data line. The input pad is used to input a selection signal to select a driving circuit to be tested, and to input a data signal to make the organic light emitting diode emit light. The write scan line receives a selection signal from the input pad to enable or disable the driving circuit to be tested. The data line receives the data signal from the input pad, and transmits the value of the data signal to the driving circuit to be tested. FIG. 4 is a commonly used driving circuit (with no organic light-emitting diodes coated). As shown in FIG. 4 , the driving circuit includes a first transistor ...

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Abstract

The invented method and system are utilized to test N pieces of driving circuit before active mode organic light-emitting diode (AMOLED) is coated onto display screen. One end of driving circuit connected to an organic LED is as a testing output end. First, the method selects a driving circuit to be tested. Then, a current signal from the testing output end of the driving circuit is picked up and analyzed so as to determine whether the driving circuit works normally. All test of driving circuits are completed according to the said method.

Description

technical field [0001] The invention provides a testing method and system, which is to test the drive circuit of an active organic light emitting display before coating the organic light emitting diodes. Background technique [0002] With the advancement of science and technology, screen display technology is also changing with each passing day. Following the light-emitting diode (LED) display technology, a new flat-panel display technology has appeared on the market. This new technology is called an organic light emitting diode (organic light emitting diode) display technology, or OLED for short. OLEDs require a driver circuit to drive them. Taking the active matrix organic light emitting display (AMOLED) technology as an example, the driving circuit generates a current to drive the organic light emitting diode to emit light. colorful effect. Not only can organic light-emitting diodes be rolled up and carried away, but there is no viewing angle problem at all. At the sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H05B33/08H05B44/00
Inventor 石安
Owner TPO DISPLAY