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Starting-up brightness control method of organic light emitting panel

An organic light-emitting panel and brightness control technology, which is applied to static indicators, instruments, etc., can solve problems such as excessive voltage offset, large current in local areas, and afterimages, so as to reduce the probability of panel afterimages and reduce the boot screen Brightness, reducing the effect of excessive aging

Active Publication Date: 2017-07-28
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, since the OLED is a current-type device, the larger the current, the greater the heat generation of the OLED device. With the existing driving device and driving method, if the screen brightness is too high when starting up, the temperature in a local area of ​​the panel will be too high, which will cause OLED The phenomenon of device aging too fast or burnt out; too high brightness in a local area will cause excessive current in a local area, resulting in excessive voltage shift of the driving TFT (Thin Film Transisto, Thin Film Field Effect Transistor), and afterimages

Method used

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  • Starting-up brightness control method of organic light emitting panel
  • Starting-up brightness control method of organic light emitting panel
  • Starting-up brightness control method of organic light emitting panel

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Embodiment Construction

[0013] see figure 1 , figure 1 It is a schematic flow chart of an embodiment of the method for controlling the startup brightness of the organic light-emitting panel of the present invention. It should be noted that if there are substantially the same results, the method of the present invention does not figure 1 The flow sequence shown is limited. Wherein, the organic light emitting panel of the present invention includes a plurality of pixels. Such as figure 1 As shown, the method includes the following steps:

[0014] S101: Obtain the brightness to be displayed corresponding to each pixel during the booting process.

[0015] Under normal circumstances, during the power-on threshold time of the OLED panel, each pixel does not light up at the same time, but some of them light up first, and some of them light up later. If the display brightness of some pixels that are turned on first is too high, the brightness of a local area of ​​the OLED panel will be too high, which ...

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Abstract

The invention discloses a starting-up brightness control method of an organic light emitting panel. The method comprises steps of acquiring a to-be-displayed brightness corresponding to each pixel in a starting-up process; comparing the to-be-displayed brightness of each pixel with a preset brightness threshold value; if the to-be-displayed brightness is larger than the brightness threshold value, adjusting to the to-be-displayed brightness to be smaller than or equal to the brightness threshold value; and using the adjusted to-be-displayed brightness to control the corresponding pixel to carry out display. In this way, the ghost rate of the panel caused by too big voltage offset during starting up can be reduced and too fast aging speed of a panel device caused by too heavy local current is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for controlling the brightness of an organic light-emitting panel when it is turned on. Background technique [0002] In the flat panel display technology, the active matrix organic light emitting display (AMOLED) is recognized by the industry for its advantages such as thinness, active light emission, fast response speed, wide viewing angle, rich color and high brightness, low power consumption, and high and low temperature resistance. The third-generation display technology following LCD has been increasingly used in portable products such as mobile phones and digital cameras, and medium-sized AMOLED TV screens are about to start mass production. However, since the OLED is a current-type device, the larger the current, the greater the heat generation of the OLED device. With the existing driving device and driving method, if the screen brightness is too high when star...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G2320/0626G09G2320/046G09G2320/0693G09G2330/026G09G2320/0276G09G3/3208G09G2370/14
Inventor 王振岭黄泰钧
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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