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Method for implementing negative pulse annealing through writing data

A technology of pixel circuit and data writing, applied in instruments, static indicators, etc., can solve problems such as the decline of picture brightness, achieve the effect of maintaining uniformity, eliminating burnt pictures, and solving brightness loss

Inactive Publication Date: 2010-01-06
NANJING CEC PANDA LCD TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Due to the insertion of a black screen for one scanning period, the brightness of the screen decreases in terms of the integral effect of time

Method used

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  • Method for implementing negative pulse annealing through writing data
  • Method for implementing negative pulse annealing through writing data
  • Method for implementing negative pulse annealing through writing data

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 5 It is a schematic diagram of the data processing method of the present invention. The display data input is D1, the corresponding brightness is B1, and the display data corresponding to twice the brightness 2*B1 is D1*, then the adjusted data is D1*. Similarly, if the display data input is D2, the corresponding brightness is B2, and the display data corresponding to twice the brightness 2*B2 is D2*, then the adjusted data is D2*.

[0033] Figure 6 It is a drive circuit block diagram of the present invention. The display data of each frame first passes through the data processing circuit, and after processing, the display data or annealing data is output to the timing controller, and then the timing controller respectively drives the source driving circuit and the gate driving circuit for display. The timing controller does not modi...

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Abstract

The invention discloses a method for realizing negative impulse anneal through writing data. The method comprises the following steps: pre-processing the display data of each frame, adjusting the display data in case of being smaller than a setting value, storing an adjusting mark, and outputting the display data after being adjusted within a first scanning period; and outputting the display or anneal data according to the adjusting mark within a second scanning period. The method provided by the invention can restrain the property excursion of the TFT of a drive OLED device in an active drive OLED display device, thereby prolonging the service life of the TFT device without damaging the brightness.

Description

technical field [0001] The invention relates to a negative pulse annealing method for realizing black picture insertion, in particular to a method for realizing negative pulse annealing in a data writing mode applied in an active matrix organic light-emitting display. Background technique [0002] An organic light emitting display device (OLED) is an active light emitting device. Compared with the current mainstream flat-panel display technology Thin Film Transistor Liquid Crystal Display (TFT-LCD), OLED has the advantages of high contrast, wide viewing angle, low power consumption, and thinner volume. It is one of the most concerned technologies in flat-panel display technology. [0003] OLEDs can be driven with either a passive matrix (PM) or an active matrix (AM). Compared with the PM driver, the AM driver has the advantages of larger displayed information capacity, lower power consumption, longer device life, and higher picture contrast. The PM drive is suitable for lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/3225
Inventor 李俊峰张晓建
Owner NANJING CEC PANDA LCD TECH
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