Novel OLED (Organic Light Emitting Diode) driving circuit
A driving circuit, a new type of technology, applied in the direction of instruments, static indicators, etc., can solve the problem that the current change of TFT negative drift cannot be compensated, and achieve the effect of overcoming the change of driving current, prolonging the service life, and uniform pixel compensation
Pending Publication Date: 2019-03-01
FUJIAN HUAJIACAI CO LTD
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] To this end, it is necessary to provide a new type of OLED drive circuit to solve the problem that the existing OLED compensation circuit cannot compensate for the negative drift of the TFT and the current change caused by the deterioration of the OLED.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.
[0024] see figure 1 , The novel OLED driving circuit described in this embodiment includes thin film transistors T1, T2, T3, T4, T5, capacitor C1 and OLED; wherein, the thin film transistors T1, T2, T3, T4, T5 are N-type structures.
[0025] The control terminal of the thin film transistor T1 is connected to the n-level scanning signal, the source terminal is connected to the working voltage Vdata, and the drain terminal is connected to the control terminal of T2, the drain terminal of T5 and one terminal of the capacitor C1;
[0026] The source terminal of the thin film transistor T2 is connected to the drain terminal of T4, and the drain terminal is connected to the B terminal of the capacitor C1;
[0027] The control end of the th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a novel OLED (Organic Light Emitting Diode) driving circuit, which comprises thin film transistors T1, T2, T3, T4, T5, a capacitor C1 and an OLED. The control terminal of thethin film transistor T1 is connected to an n-level scanning signal, the source terminal of the thin film transistor T1 is connected to a working voltage Vdata, the drain terminal of the thin film transistor T1 is connected to a control terminal of T2, the drain terminal of T5 and one end of the capacitor C1; the source terminal of the thin film transistor T2 is connected to the drain terminal of T4, and the drain terminal of the thin film transistor T2 is connected to the B terminal of the capacitor C1; the control terminal of the thin film transistor T3 is connected to an n*1-level scanning signal, the source terminal of the thin film transistor T3 is connected to a reference voltage Vref, and the drain terminal of the thin film transistor T3 is connected to the other end of the capacitorC1 and the anode of the OLED; the control terminal of the thin film transistor T4 is connected to a control signal Em, and the source terminal of the thin film transistor T4 is connected to a workingvoltage VDD; the control terminal of the thin film transistor T5 is connected to the n*1-level scanning signal, the source terminal of the thin film transistor T5 is connected to a working voltage Vin; and the cathode of the OLED is grounded. The novel OLED driving circuit can simultaneously overcome the change of the drive current caused by the electrical degradation of the OLED and a TFT, so asto achieve the effect of pixel compensation and uniform panel brightness.
Description
technical field [0001] The invention relates to the technical field of organic light emitting diodes, in particular to a novel OLED driving circuit. Background technique [0002] Organic light emitting diodes (Organic Light Emitting Diode, OLED) can be divided into passive matrix driving (Passive Matrix OLED, PMOLED) and active matrix driving (Active Matrix OLED, AMOLED) according to the driving method. Among them, the PMOLED does not emit light when data is not written, but only emits light during data writing. This driving method is simple in structure, low in cost, and easy to design, and is mainly suitable for small and medium-sized displays. [0003] Finally, AM stands for Active Matrix, which is relative to Passive Matrix and refers to the driving method of each OLED pixel. In Passive Matrix, the control of each pixel is realized through a complex electrode network, so as to realize the charge and discharge of a certain pixel. Generally speaking, the control method o...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208Y02B20/30
Inventor 不公告发明人
Owner FUJIAN HUAJIACAI CO LTD