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AMOLED display screen drive circuit and nonlinear interpolation construction method thereof

A non-linear interpolation and display technology, which is applied to static indicators, instruments, etc., can solve the problems of insufficient accuracy of gray scale potential, and achieve high image display quality, high interpolation accuracy, and accurate display accuracy.

Active Publication Date: 2014-03-05
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of insufficient accuracy of the gray scale potential of the AMOLED voltage mode drive circuit in the prior art, and provides a method for the non-linear interpolation construction of the gray scale potential, and a new AMOLED voltage mode drive circuit

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  • AMOLED display screen drive circuit and nonlinear interpolation construction method thereof
  • AMOLED display screen drive circuit and nonlinear interpolation construction method thereof
  • AMOLED display screen drive circuit and nonlinear interpolation construction method thereof

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] figure 1 As shown in the solution of the prior art, the high color depth AMOLED voltage mode display drive circuit includes a timing control circuit 1 , a data processing circuit 2 , a gamma correction circuit 3 , and a linear interpolation and buffer circuit group 40 . Among them, the gamma correction circuit 3 is used as the nonlinear primary DAC, and a set of linear interpolation and buffer circuits 40_i (i=1, 2, ..., K, K is the number of display screen sources) is used as the secondary DAC.

[0022] Such as figure 2 As shown, the present invention provides a non-linear interpolation method for the gray scale potential of an AMOLED display screen, extracting three adjacent gray scale potentials from the M-level gamma correction voltage generated by the gamma correction circuit as reference voltages, Construct a nonlinear curve pa...

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Abstract

The invention relates to an AMOLED voltage-mode display screen drive circuit and a nonlinear interpolation construction method thereof. The AMOLED voltage-mode display screen drive circuit comprises a time schedule controller, a data processing circuit, a gamma correction circuit and a nonlinear interpolation and buffer circuit. The data processing circuit receives sequential control signals and serial image data, converts the serial image data to parallel data in line, and transmits the parallel data to the nonlinear interpolation and buffer circuit. The gamma correction circuit generates M-level gray level voltages according to a gamma correction curve, the nonlinear interpolation and buffer circuit receives the gray level voltages and the image data and generates N-position gray level voltages to drive a display screen. According to the AMOLED voltage-mode display screen drive circuit and the nonlinear interpolation construction method thereof, a complex circuit structure is not introduced, the nonlinear interpolation and buffer circuit is used for carrying out nonlinear interpolation on gamma correction circuit M-position output reference electric potential, the gamma correction circuit M-position output reference electric potential can be well matched with the gamma correction curve, and therefore higher gray level electric potential display accuracy can be achieved.

Description

technical field [0001] The invention relates to the field of organic light-emitting diode display technology, in particular to an AMOLED voltage mode display drive circuit and a construction method for non-linear interpolation of gray potentials. Background technique [0002] Organic light emitting diode (Organic Light Emitting Diode, hereinafter referred to as OLED) display technology is a technology that injects carriers and recombines organic semiconductors and organic light-emitting materials under the action of an electric field to cause them to emit light. A display using this technology is an OLED display. As a new light-emitting technology, OLED has the characteristics of self-luminescence, wide viewing angle, short response time, high luminous efficiency, low working voltage, thin panel, large-size and bendable panels. Compared with other current mainstream display technologies, such as LCD and LED displays, it has obvious advantages in many aspects. [0003] The ...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/3258
Inventor 李洪革尹心雨张子裕白会新
Owner BEIHANG UNIV
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