Organic light emitting diode driving circuit and display device

A technology of light emitting diodes and driving circuits, applied in static indicators, instruments, etc., can solve the problems of uneven picture, low driving current, unstable current, etc., and achieve the effect of effective and meticulous control.

Active Publication Date: 2018-05-08
NANJING CEC PANDA LCD TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention discloses an organic light emitting diode driving circuit. The organic light emitting diode driving circuit uses an externally input trigger driving signal to control the time ratio of the o

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  • Organic light emitting diode driving circuit and display device
  • Organic light emitting diode driving circuit and display device
  • Organic light emitting diode driving circuit and display device

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Embodiment Construction

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0056] In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. Herein, "a" not only means "only one", but also means "more than one".

[0057] The organi...

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Abstract

The invention discloses an organic light emitting diode driving circuit. The organic light emitting diode driving circuit includes an eleventh thin film transistor which is opened according to a scanning voltage and transmits a data voltage, a twelfth thin film transistor which produces a driving current, a thirteenth thin film transistor which controls whether the driving current is transmitted to the anode of an organic light emitting diode according to a trigger driving signal, and the organic light emitting diode which provides light. According to the organic light emitting diode driving circuit of the invention, the time ratio of the bright state to the dark state of the organic light emitting diode is controlled by an externally input trigger driving signal, the function of displaying pictures of different gray scales under the drive of the same current is achieved, and the problem of uneven picture caused by low driving current and unstable current during the display of low-gray-scale pictures can be avoided. The invention further discloses a display device using the organic light emitting diode driving circuit.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic light emitting diode driving circuit and a display device thereof. Background technique [0002] The organic light emitting display device utilizes the advantages of high contrast ratio, high color gamut, wide viewing angle, low power consumption, and thinner and thinner brought by organic light emitting diodes (OLEDs), which are favored by the market. The principle of OLED light emission is briefly as follows: under the action of an external electric field, the electrons and holes provided by the cathode and anode are combined in the light-emitting layer to form excitons, and the excitons return to the ground state to emit photons. Therefore, OLED is a current light-emitting device. The circuit in the board controls the magnitude of the current, and then controls the brightness of the light. [0003] A prior art OLED drive circuit such as figure 1 As shown, the OLE...

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Application Information

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IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 赖谷皇戴超王志军
Owner NANJING CEC PANDA LCD TECH
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