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Organic LED device and mfg. method thereof

A light-emitting diode, an organic technology, applied in semiconductor/solid-state device manufacturing, electric solid-state devices, semiconductor devices, etc., can solve problems such as complex device structure, low aperture, and unsatisfactory contact holes

Inactive Publication Date: 2006-12-27
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This leads to such disadvantages that the aperture ratio in the pixel of the organic LED element 108 is low, and the device structure becomes complicated.
Therefore, the contact holes thus formed are not ideal in terms of efficiency, throughput and cost.
On the other hand, it is conceivable that only using the common cathode mode using n-type TFTs cannot restrict Vgs from changing with organic LED characteristics, and is insufficient in display characteristics

Method used

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  • Organic LED device and mfg. method thereof
  • Organic LED device and mfg. method thereof
  • Organic LED device and mfg. method thereof

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Embodiment Construction

[0042] Although the present invention will be described in detail below based on the embodiments shown in the drawings, the present invention is not limited to these embodiments. figure 1 The structure of the drive circuit using the organic LED device 10 with the common anode structure constructed according to the present invention is shown. Such as figure 1 As shown, the drive circuit is formed by n-type TFTs, and its structure is such that an n-type driver TFT12 and an n-type switch circuit TFT14 are connected to drive the organic LED element 16 . In a preferred embodiment, both the driver TFT 12 and the switch TFT 14 are preferably made n-type doped.

[0043] However, in the present invention, it is also possible to configure the driver TFT 12 and the switch TFT 14 as TFTs having different doping types from each other. Refer below figure 1 The drive circuit is described in more detail. The gate electrode 12g of the driver TFT 12 is connected to the common electrode 2...

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Abstract

PROBLEM TO BE SOLVED: To provide an organic LED device which can cope with a large area, and to provide its efficient manufacturing method. ŽSOLUTION: This organic LED device 10 is constituted on an insulation substrate 26 and includes switching TFT 12 and a driver TFT 14 formed on the substrate 26. Further, an organic LED element 16 is formed for every pixel through an insulation film 58 on the substrate 26, and connected to the driver TFT. This organic LED device 10 comprises an anode 34 and a cathode 36 connecting the driver TFT 12 and the organic LED element 16 formed on the upper side of the insulation film 58, the anode 34 connects a plurality of pixels as a common electrode and self-aligning property at the time of manufacturing is improved. Ž

Description

technical field [0001] The invention relates to an organic light-emitting diode (LED), in particular to an organic LED device which adopts a top emission structure and is suitable for enlarging the area and a manufacturing method thereof. Background technique [0002] Since the organic LED element has a very fast response speed and is a self-luminous element, it is desired to provide a good flat display with a wide viewing angle by applying the organic LED element to a display device. Therefore, the use of organic LED elements in flat-panel displays replacing liquid crystal displays has been tested. [0003] In the case of applying the above-mentioned organic LED element to a flat panel display, an active matrix driving method similar to a liquid crystal display can be employed. It is known that a top emission structure or a bottom emission structure can be used as a light emitting structure of an organic LED device employing an active matrix driving method. Figure 9 is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/15H01L33/00H01L51/50G09F9/30G09G3/14H05B33/10H01L21/336H01L27/32H01L29/786H05B33/12H05B33/14H05B33/22
CPCH01L27/3244H10K59/12G02F1/133H05B33/00
Inventor 辻村隆俊田中淳三和宏一师冈光雄
Owner TPO DISPLAY