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Circuit and method for digital compensation correction of OLED luminous efficiency attenuation

A technology of digital compensation and correction circuit, applied in the field of digital compensation and correction circuit and digital compensation and correction, can solve the problems of complex implementation, and achieve the effect of simple implementation, low cost and strong versatility

Inactive Publication Date: 2014-04-16
咸阳金钻数码有限公司
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Problems solved by technology

[0005] In order to overcome the complex shortcomings of the existing OLED luminous attenuation compensation methods, the present invention provides a digital compensation correction circuit and method for OLED luminous efficiency attenuation over time

Method used

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  • Circuit and method for digital compensation correction of OLED luminous efficiency attenuation
  • Circuit and method for digital compensation correction of OLED luminous efficiency attenuation

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Embodiment Construction

[0019] refer to Figure 1-2 The present invention will be described in detail.

[0020] In the design and manufacture stage of OLED panel, through the accelerated aging method, the light efficiency decay curve of the red, green and blue three primary color organic light-emitting materials is obtained by actual measurement, and then the light efficiency of the red, green and blue three primary color organic light-emitting materials is measured. Curve fitting and mathematical modeling are performed on the time-lapse attenuation curve respectively, and the light efficiency attenuation characteristic parameters of the red, green and blue three primary color organic light-emitting materials obtained by the mathematical modeling are pre-stored in the register of the OLED driver chip, and the external system The host writes the recorded working time parameters of the OLED panel into the registers of the OLED driver chip at regular intervals. According to the above mathematical model...

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Abstract

The invention discloses a method for digital compensation correction of OLED luminous efficiency attenuation. The method is used for solving the technical problem of complexity in achieving an existing OLED luminous attenuation compensation method. The technical scheme is that luminous efficiency attenuation curves of red, green and blue three-primary-color organic light-emitting materials are respectively subject to fitting and mathematical modeling, and an external system mainframe writes recorded OLED panel working time parameters in a register of an OLED driving chip according to determined time intervals. The OLED driving chip performs sampling and quantization on the luminous efficiency attenuation curves of the red, green and blue three-primary-color organic light-emitting materials at specific time points, and finally independent compensation is performed on digital gamma-curves of the red, green and blue three-primary-color organic light-emitting materials. Compared with the prior art, according to the method, no modification needs to be performed on an OLED panel, work can be performed by utilizing a timer of the external system mainframe, and the method is simple to achieve.

Description

technical field [0001] The invention relates to a compensation circuit for OLED luminous attenuation, in particular to a digital compensation correction circuit for OLED luminous efficiency attenuation over time. It also relates to a digital compensation and correction method based on the digital compensation and correction circuit of the OLED luminous efficiency decaying over time. Background technique [0002] OLED (Organ Light Emitting Diode, Organic Light Emitting Diode) is called the third-generation display technology after CRT and liquid crystal. Compared with liquid crystals, OLED has all solid state (no liquid substance), active light emission, high contrast, ultra-thin, low power consumption, no viewing angle limitation, fast response, wide operating temperature range, easy to realize flexible display and 3D display, low cost Low cost, simple manufacturing process and many other advantages, it is recognized internationally as the best choice for the next generatio...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/3208
Inventor 李博魏廷存魏晓敏
Owner 咸阳金钻数码有限公司
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