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Light-emitting component driving circuit and pixel circuit

A technology of light-emitting elements and driving circuits, which is applied to static indicators, instruments, etc., can solve problems affecting the brightness uniformity and brightness stability of organic light-emitting diode displays, and achieve the effect of improving brightness uniformity and compensating brightness attenuation

Inactive Publication Date: 2013-10-23
DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY +1
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Problems solved by technology

In this way, the brightness uniformity and brightness constancy of the OLED display will be affected jointly.

Method used

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  • Light-emitting component driving circuit and pixel circuit
  • Light-emitting component driving circuit and pixel circuit
  • Light-emitting component driving circuit and pixel circuit

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Embodiment Construction

[0057] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In addition, wherever possible, elements / members using the same reference numerals in the drawings and embodiments represent the same or similar parts.

[0058] figure 1 is shown as a schematic diagram of a pixel circuit of an exemplary embodiment of the present invention, and figure 2 shown as figure 1 Circuit diagram of the pixel circuit. Please refer to figure 1 and figure 2 , the pixel circuit 10 of this exemplary embodiment includes a light-emitting element (for example: organic light emitting diode 101 (Organic Light Emitting Diode, OLED), but not limited thereto, so the pixel circuit 10 can be regarded as an organic light emitting diode pixel circuit) and A light-emitting component driving circuit (light-emitting component driving circuit) 103 . Wherein, the light emitting device driving circuit 103 in...

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Abstract

A pixel circuit relating to an organic light emitting diode (OLED) is provided by the invention, and if the circuit configuration (5T1C) thereof collocates with suitable operation waveforms, the current flowing through an OLED in the OLED pixel circuit is not varied along with the variation of the conducting voltage (Voled_th) of the OLED in a long time driving current stress, and is not varied with the threshold voltage (Vth) shift of a TFT used for driving the OLED. Accordingly, not only the brightness decay of the OLED in the long time stress is mitigated or compensated, but also the brightness uniformity of the applied OLED display is substantially improved.

Description

technical field [0001] The present invention relates to a plane display technology, and in particular to a light-emitting element driving circuit and a pixel circuit with self-luminous characteristics. Background technique [0002] Due to the rapid progress of the multimedia society, the technologies of semiconductor devices and display devices have also undergone rapid progress. As far as the display is concerned, since the active matrix organic light emitting diode (Active Matrix Organic Light Emitting Diode, AMOLED) display has no viewing angle limitation, low manufacturing cost, high response speed (about a hundred times higher than that of liquid crystal), power saving, self-illumination, It can be used for DC drive of portable machines, has a wide operating temperature range, is light in weight, and can be miniaturized and thinned along with hardware devices to meet the characteristic requirements of displays in the multimedia era. Therefore, the active matrix organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/3208G09G2300/0861G09G3/3233
Inventor 廖文堆张贝源曾英璟尹静文
Owner DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY
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