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A current control and current technology, applied in the direction of instruments, static indicators, etc., can solve the problem of burn-in of OLED display panel
Active Publication Date: 2018-02-23
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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[0004] In order to solve the above-mentioned technical problems, the embodiments of the present invention provide a current co...
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Embodiment 1
[0041] figure 1 A flowchart of the current control method provided by the embodiment of the present invention. The current control method provided by the embodiment of the present invention is applied to an organic light emitting diode (OLED) display panel. Specifically, as figure 1 As shown, the current control method provided by the embodiment of the present invention specifically includes the following steps:
[0042] Step 100 , respectively generating correspondences between gray scale brightness and current of at least three colors.
[0043] Optionally, if the number of colors is three, then the three colors include: red, blue and green, i.e. three primary colors; if the number of colors is four, then the four colors include: red, blue, green and white, in addition, using four colors can reduce the power consumption of current detection than using three colors.
[0044] specific, figure 2 The flowchart of step 100 provided for the embodiment of the present invention, ...
Embodiment 2
[0071] Based on the inventive concepts of the foregoing embodiments, Figure 4 A schematic structural diagram of a current control device provided in an embodiment of the present invention, the current control device is applied in an organic light emitting diode (OLED) display panel, such as Figure 4 As shown, the current control device provided by the embodiment of the present invention includes: a preset module 10 , a detection module 20 , a search module 30 , a comparison module 40 and an adjustment module 50 .
[0072] The preset module 10 is configured to respectively generate correspondences between the gray scale brightness and the current of at least three colors.
[0073] Optionally, if the number of colors is three, then the three colors include: red, blue and green; if the number of colors is four, then the four colors include: red, blue, green and white; in addition, The use of four colors can reduce the power consumption of current detection compared with the us...
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Abstract
According to the embodiment, the invention discloses a current control method and a device thereof. The method, which is applied to an organic light emitting diode OLED display panel, comprises the following steps: generating corresponding relations between the greyscale brightness of at least three colors and a current; within a blank interval of a display cycle, detecting an actual current valueand actual greyscale brightness of contents which are displayed on the OLED display panel; in accordance with the target greyscale brightness of the contents displayed by the OLED display panel, searching a corresponding relation between the greyscale brightness of each color and the current, so that a target current value is obtained; and comparing the actual current value with a target currentvalue, and adjusting the actual greyscale brightness under the state that the actual current value and the target current value are inconsistent, so that the actual current value is less than or identical to the target current value. According to the current control method and the device thereof provided by the invention, by controlling the actual greyscale brightness of the contents which are displayed by the OLED display panel, the actual current value is less than or equal to the target current value, so that the stability of the current value is maintained, the circumstance that the current value abnormally rises is prevented and a 'burnt-screen' phenomenon of the OLED display panel is avoided.
Description
technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular to a current control method and device thereof. Background technique [0002] Organic Light-Emitting Diode (OLED for short) is one of the hotspots in the field of flat panel display panel research. [0003] The inventors found that during the display period of the OLED display panel, since the OLED is a current-type device, when a large current flows through the display panel, the temperature will increase, and the increase in temperature will cause the current value to further increase. In addition, When the OLED display panel is being tested for reliability, when it is put into a high-temperature oxide film chamber, the temperature rise will also lead to a further increase in the current value, and if the current value is too large, the OLED display panel will burn in. Contents of the invention [0004] In order to solve the above technical problem, t...
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