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Driving device and method of active mode organic photogenic display

A light-emitting display and driving device technology, which is applied to static indicators, instruments, etc., can solve the problems of low complexity of driving methods, uneven images of active organic light-emitting diode panels, etc.

Inactive Publication Date: 2005-01-19
WINTEK CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Therefore, the main purpose of the present invention is to solve the above-mentioned traditional defects and avoid the existence of defects. The present invention can be applied in the device of low-temperature polysilicon thin-film transistor (LTPS-TFT) active organic light-emitting diode display (AMOLED) to improve active organic light-emitting diode display (AMOLED). The shortcoming of the non-uniform image of the light-emitting diode panel; the complexity of the driving method of the present invention is low simultaneously, and the scan driver IC and the data driver IC of the traditional passive (Passive-Matrix) organic light-emitting diode display can be used, which can reduce the manufacturing cost

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  • Driving device and method of active mode organic photogenic display
  • Driving device and method of active mode organic photogenic display
  • Driving device and method of active mode organic photogenic display

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Embodiment Construction

[0019] Relevant detailed content and technical specification of the present invention, now cooperate accompanying drawing to illustrate as follows:

[0020] see figure 1 Shown is the schematic diagram of the device of the present invention. As shown in the picture: the device includes:

[0021] A data line 110, a scan line 120, a zero control line 130, a display control line 140, a power supply line 150;

[0022] A writing element T1, the drain of the writing element T1 is connected to the data line 110, and the gate (gate) is connected to the scanning line;

[0023] A zero return element T2, the gate of the zero return element T2 is connected to the zero return control line 130;

[0024] A driving element T3, the gate of the driving element T3 is connected to the source (source) of the above-mentioned writing element T1, its drain is connected to the source of the above-mentioned return-to-zero element T2, and its source is connected to the above-mentioned The power supp...

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Abstract

It is a kind of drive apparatus and method of initiative organic light emitting display, and drive element, which includes a writing element, a clearing element, a driving element, a switch element, and a storing element. Based on the automatic clear mechanism, this apparatus compensates the variation of critical voltage of each transistor element, so to improve the evenness of image. The data loading method is to charge the storing element by current source. It can adjust the on-load voltage by controlling the scale of current source and the time of charging time. Compared with the other invention, it can save a capacitor so to increase the open rate of pixel and reduce the complexity of drive mode.

Description

technical field [0001] The present invention relates to an active organic light emitting display driving device and method, in particular to a driving device and method for improving image unevenness of an organic light emitting display. Background technique [0002] Organic Light Emitting Display (OLED) can be divided into passive type (Passive Matrix; PMOLED) and active type (Active Matrix; AMOLED) according to the driving method. The so-called active driving OLED (AMOLED) is to use a thin film transistor (Thin Film Transistor; TFT) with a capacitor (Capacitor) to store signals to control the brightness gray scale performance of the OLED. [0003] Although the production cost and technical threshold of passive OLED are relatively low, the resolution cannot be improved due to the limitation of the driving method. Therefore, the size of the applied product is limited to about 5 inches, and the product will be limited to the low-resolution and small-size market. If you want ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30
Inventor 罗新台
Owner WINTEK CORP