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Method for improving low-gray-scale color shift and OLED display panel

A display panel, low grayscale technology, used in static indicators, instruments, etc.

Active Publication Date: 2019-03-29
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for improving low-gray-scale color shift, which is used to solve the problem of low-gray-scale color shift of OLED display panels in the prior art without affecting the structure and overall performance of the OLED panel

Method used

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  • Method for improving low-gray-scale color shift and OLED display panel
  • Method for improving low-gray-scale color shift and OLED display panel
  • Method for improving low-gray-scale color shift and OLED display panel

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The low gray scale referred to in the embodiment of the present invention refers to a gray scale less than 64.

[0027] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] figure 1 It shows a schematic flow chart corresponding to the data compression method applied to the vector space provided in the embodiment of the present invention, as shown in f...

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Abstract

The embodiment of the invention discloses a method for improving low-gray-scale color shift and an OLED display panel. The method includes the steps: setting a first lighting rule for setting a pixelunit by using a first brightness value in a set time period in each refresh cycle of the OLED display panel in any low gray state, and controlling the OLED panel for display by using the first lighting rule. Since the first brightness value for lighting the pixel unit in the first lighting rule is greater than a second brightness value for lighting all the pixel units in the entire refresh cycle and an OLED is a current-driven device, the brightness of the pixel unit is increased when the first lighting rule is used for controlling the display of the OLED display panel, the control current ofa TFT is also increased accordingly. Since the current control capability of the TFT is enhanced, the impact of a leakage current of the TFT on the color shift is also decreased, thereby effectively solving the problem of low-gray-scale color shift of the OLED display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for improving low gray scale color shift and an OLED display panel. Background technique [0002] In OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) devices, due to the nature of the material itself, the hole mobility of the hole injection layer is very high, and the material of the hole injection layer can be used in both lateral and vertical directions. conduct electricity. An OLED device includes pixels of three colors of red, green and blue, and the lighting voltages of pixels of different colors are different. When lighting a pixel with a higher operating voltage, due to the influence of crosstalk current or TFT (Thin Film Transistor, Thin Film Transistor) leakage current, the current conducts laterally through the hole injection layer, and the pixel with a lower lighting voltage can also be turned on. It is slightly lit, which makes the OLED pa...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 李贵芳
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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