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Organic LED driving mechanism

A light-emitting diode and driving device technology, which is applied in the field of organic light-emitting diode driving devices, can solve the problems that the charge of the storage capacitor 104 cannot be completely released, and the charging mechanism cannot adapt to integrated circuits, etc., so as to achieve the effect of improving the display effect

Inactive Publication Date: 2008-05-14
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] When the voltages are similar, the charge of the storage capacitor 104 cannot be completely released, and at the same time, the charging mechanism cannot adapt to integrated circuits with different operating voltages.

Method used

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  • Organic LED driving mechanism
  • Organic LED driving mechanism
  • Organic LED driving mechanism

Examples

Experimental program
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Embodiment Construction

[0020] image 3 is a circuit diagram of an organic light emitting diode driving device according to an embodiment of the present invention. image 3 The OLED driving device includes a first switch transistor 301, a second switch transistor 302, a third switch transistor 303, a P-type MOS first transistor M2 and a P-type MOS second transistor M4, a storage capacitor C1 and an OLED D1. The data signal Vdata1 is input to the first switch transistor 301, the first switch transistor 301 can be implemented by a P-type MOS third transistor M1, a first terminal of the third transistor M1 receives the data signal Vdata, and a control terminal of the third transistor M1 receives The first scan signal SCAN controls the output data signal Vdata. The first transistor M2 is coupled to the other end of the transistor M1 to receive the data signal Vdata, and the control end of the first transistor M2 is electrically connected to a second end thereof to form a virtual diode to compensate for ...

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Abstract

The invention discloses a organic light emitting diode driving device which includes a first switch transistor, a first transistor, a second switch transistor, a storage capacitor and a second transistor. The first transistor is used for receiving a data signal and outputting the data signal through a first scanning signal. The first transistor is used for compensating a critical voltage of the second transistor. The second transistor is used for receiving a voltage signal and outputting the voltage signal through a second scanning signal. The storage capacitor is used for storing the data voltage. The second transistor is connected with the second switch transistor by permeating the storage capacitor. The invention is able to release effectively electric charges of the storage capacitor, increase a display effect, and change the electric potential of the input voltage to fit different integrated circuits with different operation voltages.

Description

technical field [0001] The present invention relates to a driving device, and in particular to an organic light emitting diode driving device. Background technique [0002] figure 1 It is a circuit diagram of an existing organic light emitting diode driving device. figure 1 The organic light emitting diode driving device includes P-type MOS (Metal Oxide Semiconductor, metal oxide semiconductor) transistors 101 - 106 for driving the organic light emitting diode 107 . The control end of the transistor 101 receives the first selection signal S1, and controls the input of the data signal Vdata, and the data signal Vdata is input to the storage capacitor 104 through the transistor 102, and the voltage on the storage capacitor 104 controls the gate of the transistor 105, therefore, the transistor 105 The output terminal of the transistor 106 generates a current corresponding to this voltage, the gate of the transistor 106 is controlled by the second selection signal S2, and the ...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCY02B20/346Y02B20/343Y02B20/30
Inventor 魏湘云许峻源郭哲成黄俊尧林展瑞
Owner CHUNGHWA PICTURE TUBES LTD