Display panel and display device

A technology of display panel and display area, applied in static indicators, instruments, etc., can solve the problems of inaccurate threshold voltage value, affecting the effect of compensation, excessive parasitic capacitance, etc.

Active Publication Date: 2019-01-04
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the parasitic capacitance between the detection line and other driving signal lines in the display panel is too large, it will affect the signal transmitted to the pixel driver, making the detected threshold voltage value inaccurate and affecting the compensation effect.

Method used

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  • Display panel and display device
  • Display panel and display device

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Embodiment Construction

[0033] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] It should be clear that 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 creative efforts fall within the protection scope of the present invention.

[0035] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should be understood that the term "an...

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Abstract

The embodiment of the invention provides a display panel comprising a display area and a compensation circuit arranged in the display area. The compensation circuit comprises a threshold detection line extending in the first direction and also comprises a signal line extending in the second direction. The threshold detection line and the signal line include an overlapping part and a non-overlapping part. In the non-overlapping part, the threshold detection line has the first width D1 and the signal line has the second width D2. The distance between the threshold detection line and the signal line is H1 in the direction perpendicular to the display panel. In the overlapping part, the overlapping area between the threshold detection line and the signal line is S1. The distance between the threshold detection line and the signal line is H2 in the direction perpendicular to the display panel, wherein S1/H2<D1*D2/H1 so that the parasitic capacitance between the threshold detection line andthe signal line can be reduced and then the interference can be reduced.

Description

【Technical field】 [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device. 【Background technique】 [0002] In the field of OLED display technology, a pixel driving circuit is usually set to drive OLED light emitting devices. However, due to the drift of the threshold value of the driving transistor, the actual display brightness of the OLED light-emitting device is different from the target brightness, which further causes abnormal display of the display panel. Therefore, generally, the pixel driving circuit has the function of compensating the drift of the threshold value. In the prior art, there are usually two types of internal compensation and external compensation. The externally compensated pixel drive circuit connects the detection line to the drive IC to detect the threshold voltage, and transmits the compensated signal to the pixel drive circuit through the data line. However, if the parasitic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/00
CPCG09G3/006G09G3/3208
Inventor 徐豪杰周星耀李玥高娅娜
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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