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Current driving device and method for active organic light-emitting diode

A light-emitting diode, current-driven technology, used in instruments, static indicators, etc., can solve problems such as increased process complexity and increased manufacturing costs

Inactive Publication Date: 2005-01-19
WINTEK CORP
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Problems solved by technology

[0012] However, the above-mentioned patents must use P-type (P-Type) and N-type (N-Type) color low-temperature polysilicon thin-film transistor (C-TFT LTPS) process, the complexity of the process will be relatively increased, and the manufacturing cost will also be relatively increased.

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  • Current driving device and method for active organic light-emitting diode
  • Current driving device and method for active organic light-emitting diode
  • Current driving device and method for active organic light-emitting diode

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Embodiment Construction

[0019] Relevant detailed content and technical description of the present invention, now in conjunction with accompanying drawing, explain as follows:

[0020] see figure 1 Shown is the schematic diagram of the device of the present invention. As shown in the figure: the driving device proposed by the present invention is one or two adjacent sub-pixels (odd sub-pixel 10 and even sub-pixel 20), and each sub-pixel driving device includes 4 thin film transistors and 1 capacitor; 10 and even-numbered sub-pixels 20 each include a writing element T1 and T1', a switching element T2 and T2', a driving element T3 and T3', a control element T4 and T4', a storage element C and C', a The light-emitting elements 11 and 21; and the driving circuit includes the odd enabling line 101 and a power supply line 52 of the odd sub-pixel 10, the even enabling line 201 and a power supply line 52' of the even sub-pixel 20, and an odd sub-pixel 10 and even sub-pixels 20 share a data line 50 , a scan...

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Abstract

It is a kind of current driving apparatus and method of active organic LED. It comprises two neighboring sub-pixels (even sub-pixel and odd sub-pixel); each sub-pixel consists of a writing element, a switch element, a drive element, a control element, a storing element, and an illuminating element. The drive line consists of odd enabled line of odd sub-pixel, even enabled line of even sub-pixel, a datawire shared by odd sub-pixel and even sub-pixel, a scanning wire, a power supply cord, and a common cathode line. It can be used to improve the screen image uneven condition of active organic LED, and save the number of datawire.

Description

technical field [0001] The present invention relates to a current driving device and a method thereof for an active organic light emitting diode display, in particular to a current programmed driving device and a method thereof which can improve uneven images of an active organic light emitting diode panel. Background technique [0002] Organic light emitting displays can be divided into passive type and active type according to the driving method. The so-called active-driven organic light-emitting display uses thin film transistors and capacitors to store signals to control the brightness and gray-scale performance of the organic light-emitting display. [0003] Although the production cost and technical threshold of passive organic light-emitting displays are low, they are limited by the driving method and the resolution cannot be increased. Therefore, the size of the applied products is limited to within about 5 inches, and the products will be limited to the market with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233
Inventor 罗新台简志忠
Owner WINTEK CORP
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