Multichannel OLED (Organic Light Emitting Diode) life testing system based on Howland current pump
A technology of life test and current pump, applied in the direction of single semiconductor device testing, etc., can solve the problem of not being able to estimate the life information of the device under test, etc., to meet the needs of OLED life test, the current is accurate and stable, and the overall cost is reduced.
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[0022] The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.
[0023] Considering the original intention of the design: miniaturization and intelligence, such as figure 1 , figure 2 As shown, the multi-channel OLED lifetime test system based on the Howland current pump of the present invention is mainly composed of three parts: the lower computer 1, the upper computer 2 and several OLED sample fixing boxes 3 . The upper computer 2 and the fixed OLED sample box 3 are respectively connected with the lower computer 1 .
[0024] Wherein, the OLED sample fixing box 3 includes a photoelectric signal acquisition circuit, an OLED sample fixing socket and a signal transmission interface with a lower computer. When used for sample detection, in a closed environment, the OLED sample fixing box 3 is no...
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