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Compensation circuit and driving method

A compensation circuit and compensation unit technology, applied in the field of pixel compensation circuits, can solve problems such as the inability to effectively optimize the structure of sub-pixel compensation circuits, and achieve the effects of high resolution, increased stability, and improved display quality

Pending Publication Date: 2021-04-02
FUJIAN HUAJIACAI CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For this reason, it is necessary to provide a compensation circuit and a driving method to solve the problem that the compensation circuit structure of the sub-pixel cannot be effectively optimized

Method used

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  • Compensation circuit and driving method

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Embodiment Construction

[0041] 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.

[0042] see Figure 1 to Figure 7 In this embodiment, a compensation circuit includes a transistor T1, a transistor T2, a transistor T3, a transistor T4, a transistor T5, a capacitor C1, a capacitor C2 and a diode. The input terminal of the transistor T4 is connected to the power supply voltage VDD, and the power supply voltage VDD is generally written in a DC high voltage. The control terminal of the transistor T4 is connected to the first plate of the capacitor C2, the second plate of the capacitor C2 is connected to the output terminal of the transistor T1, the input terminal of the transistor T1 is connected to the data line Date, and the control terminal of the transistor T1 Connect to the scanning signal line Scan1. The first p...

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Abstract

The invention provides a compensation circuit and a driving method. The compensation circuit comprises a transistor T1, a transistor T2, a transistor T3, a transistor T4, a transistor T5, a capacitorC1, a capacitor C2 and a diode. The transistor T4 is connected with a power supply voltage VDD and a first pole plate of the capacitor C2, a second pole plate of the capacitor C2 is connected with thetransistor T1, and the transistor T1 is connected with a data line Data and a scanning signal line Scan1; the transistor T4 is connected with the transistor T3 and the transistor T5, and the transistor T3 is connected with the scanning signal line Scan2 and the positive electrode of the diode; the transistor T5 and the transistor T2 are respectively connected with a reset signal line Reset, and the input end of the transistor T5 is connected to a circuit where the control end of the transistor T4 is connected with the first polar plate of the capacitor C2; and the input end of the transistorT2 is connected with a reference voltage Vref, and the output end of the transistor T2 is connected with a capacitor C2. According to the technical scheme, the stability of the display panel is improved through the compensation circuit.

Description

technical field [0001] The invention relates to the field of pixel compensation circuits, in particular to a compensation circuit and a driving method. Background technique [0002] In recent years, organic light-emitting diodes (Organic Light-Emitting Diode, OLED) have been widely used in in the display panel industry. But there will be some adverse factors affecting its luminous brightness, for example: first, the electrical drift of the threshold voltage Vth will affect the luminous current of the display panel; second, the aging of the material of the display panel itself will also affect the luminous current, which in turn affects Luminous brightness; third, the impedance of the metal direction of the display panel itself has a negative impact on the luminous current, that is, the I-R drop phenomenon. These adverse factors have a serious impact on the luminance of the panel, so a compensation circuit is required to perform a series of compensations on the display pane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3266G09G3/20
CPCG09G3/3208G09G3/3266G09G3/2074G09G2320/0233
Inventor 贾浩罗敬凯
Owner FUJIAN HUAJIACAI CO LTD
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