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Method for improving nonuniformity of brightness of OLED (organic light-emitting diode) display panel

A technology of uneven brightness and display panel, applied in the field of OLED display, can solve problems such as color deviation, and achieve the effect of reducing output current, enhancing output current, and compensating for uneven brightness

Inactive Publication Date: 2012-07-11
TIANJIN 712 COMM & BROADCASTING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can effectively reduce the brightness unevenness on the OLED screen, and is beneficial to reduce the cost, and at the same time meet the requirements of use, so as to solve the color deviation that occurs when the OLED panel displays image data with strong contrast

Method used

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  • Method for improving nonuniformity of brightness of OLED (organic light-emitting diode) display panel
  • Method for improving nonuniformity of brightness of OLED (organic light-emitting diode) display panel
  • Method for improving nonuniformity of brightness of OLED (organic light-emitting diode) display panel

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing. Such as figure 1 As shown, this method uses a Samsung S3C2442 chip as the image data acquisition and processing chip, the S3C2442 chip is connected to the UGS6028 OLED display screen through the SPI bus, and the OLED liquid crystal screen is driven by an EPS525 liquid crystal drive circuit inside the display screen to display images. Pixels up to 160x128.

[0017] Such as image 3 As shown, a method for improving uneven brightness of an OLED display panel comprises the following steps:

[0018] (1) Process the image data to be displayed in RGB565 format collected by the acquisition and processing chip, and separate the R, G, and B three-color gradation values ​​of each row of pixels;

[0019] (2) The average value of the three-color color scale of each row of pixels is taken as a reference value of the current consumed by the three colors of the entire row;

[0020] (3) C...

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Abstract

The invention relates to a method for improving the nonuniformity of brightness of an OLED (organic light-emitting diode) display panel. The method comprising the steps of processing collected image data to be displayed in RGB (red green blue) 565 form and separating the levels values of red, green and black of each row of pixel points; obtaining an average value of the levels of the three colors of all the pixel points of each row, and taking the average value as a reference value of current consumed by the three colors of the entire row; comparing the reference value with the levels value of the three colors of each pixel point in the row, and if deviation exists, adding or subtracting a weighting coefficient of the corresponding levels until the comparison with all the points is completed; obtaining corrected image data based on the weighting values; outputting the corrected image data to a driving circuit; and outputting the image data. By adopting the method disclosed by the utility model, the three primary colors of all the points of the displayed image can be treated, and the levels values of red, green and black can be regulated to strengthen the output current of low-brightness pixel points or to weaken the output current of high-brightness pixel points, thereby making up the problem that the brightness of pixel points of an OLED liquid crystal screen is nonuniform due to the crossed interference of current with partial pressure.

Description

technical field [0001] The invention relates to OLED display technology, in particular to a method for improving uneven brightness of an OLED display panel. Background technique [0002] OLED, that is, Organic Light-Emitting Diode (Organic Light-Emitting Diode), its display technology is different from the traditional LCD display method. It does not require a backlight. It uses a very thin organic material coating and a glass substrate. When a current passes, these organic materials will shine. Moreover, the OLED display screen can be made lighter and thinner, has a larger viewing angle, and can significantly save power. [0003] However, due to the immaturity of today's OLED display technology, OLED also has some problems. In addition to the cross effect due to the common use of electrodes, the mechanism of recombination of positive and negative charge carriers in organic electroluminescent displays to form light makes any two light-emitting pixels , as long as any of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3208
Inventor 王伟李辉辉张建
Owner TIANJIN 712 COMM & BROADCASTING CO LTD
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