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OLED (Organic light-emitting diode) display panel, driving method thereof and display device

A display panel and driving method technology, applied in static indicators, instruments, semiconductor devices, etc., can solve the problem of uneven brightness and darkness of the display screen, achieve the effect of improving the inconsistent voltage drop of PVDD and solving the effect of uneven display

Active Publication Date: 2018-01-23
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiments of the present invention provide an OLED display panel, its driving method, and a display device, which are used to solve the problem of uneven brightness and darkness of the display screen due to the existence of special-shaped regions in the dimming mode in the prior art.

Method used

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  • OLED (Organic light-emitting diode) display panel, driving method thereof and display device
  • OLED (Organic light-emitting diode) display panel, driving method thereof and display device
  • OLED (Organic light-emitting diode) display panel, driving method thereof and display device

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Embodiment Construction

[0056] At present, in order to realize full-screen display of some mobile phones, such as Figure 1a and Figure 1b As shown, devices such as cameras and earpieces are arranged in the special-shaped area B, so that the number of pixels in a row in the first display area A1 is less than that in the second display area A2. Alternate stripes move downward continuously, and the number of bright pixels in the entire display area is different at different moments, for example, when the light and dark stripes move to Figure 1a In the position shown, the number of bright pixels in the entire display area is the least, when the light and dark stripes move to Figure 1b When the position is set, the number of bright pixels in the entire display area is the largest, and the inconsistency of the number of bright pixels at different times will lead to inconsistent voltage drops of the power supply voltage (PVDD) in the OLED display panel, resulting in the problem of uneven display.

[005...

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Abstract

The invention discloses an OLED (Organic light-emitting diode) display panel, a driving method thereof and a display device. The pixel row number N2 in a second display area is set to be close to an integer multiple of a light and shade fringe period (A / nt-row pixels), that is, (k-0.1)A / n< / =N2t< / =(k+0.1) A / n, N2t>0, and k is an integer no smaller than 0. Although alternately light and shade stripes move constantly, the number of pixels with the maximum light pixels and the number of pixels with the minimum light pixels have little difference, the current changes are few, inconsistent PVDD voltage drop generated by large difference of the numbers of light pixels of the display panel in different times caused by the second display area can be improved, and the problem of uneven display is further solved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display panel, a driving method thereof and a display device. Background technique [0002] Organic electroluminescence (Organic light-emitting diodes, OLED) display panel is a display device that is packaged and molded using organic materials, which has the advantages of low operating voltage, fast response speed, high luminous efficiency, wide viewing angle and wide operating temperature. It is beneficial to the thinning, low power consumption and curved surface design of the display device. [0003] At present, in display devices such as mobile phones using OLED display panels, in order to solve afterimages without affecting the display brightness, a dimming mode is generally used for driving, so that the display area of ​​the OLED display panel presents a continuous Light and dark stripes scrolling down. Contents of the invention [0004] The embodiments of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208H01L27/32
CPCG09G3/3266G09G2310/0221G09G2320/0233G09G2320/0626G09G2300/0404G09G2320/0257
Inventor 周星耀冷传利李元高娅娜李玥朱仁远向东旭
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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