Display panel and display device

A display panel and display area technology, applied in the direction of electrical components, electric solid devices, circuits, etc., can solve problems such as uneven brightness of the screen, achieve the effect of solving the problem of voltage drop and improving the uneven brightness of the screen

Inactive Publication Date: 2020-01-17
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An embodiment of the present invention provides a display panel. By changing the introduction mode of the power supply voltage (VDD) signal, different positions are used to provide the VDD signal at the same time, so as to solve the voltage drop problem of the display panel, thereby improving the problem of uneven brightness of the screen.

Method used

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0025] The terms "first", "second", "third", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily to describe a specific order or sequentially. It should be understood that the items so described are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive in...

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Abstract

The invention discloses a display panel and a display device. By changing the introduction mode of the power supply voltage signals, the power supply voltage signals are provided at different positions at the same time, so that the problem of voltage drop of the display panel is solved, and the problem of non-uniform picture brightness is solved.

Description

technical field [0001] The invention belongs to the field of display technology, in particular to a display panel and a display device. Background technique [0002] When the organic light emitting diode emits light, the driving current is related to the power supply voltage, and the driving current needs to be supplied by the power supply voltage VDD. Considering that there is impedance in the wiring of the power supply voltage VDD, under the effect of the resistance voltage drop (IRDrop), the actual VDD voltage obtained by the pixel unit is smaller than the VDD voltage supplied by the power supply, that is, VDDpixel=VDD-Ioled*RVDD. Such as figure 1 As shown, compared with the lower end of the display panel, the upper end of the display panel is relatively farther away from the power supply voltage VDD, and the resistance is relatively larger, so the power supply voltage VDD at this position drops more severely, which will cause the upper end of the display panel to be dar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32
CPCH10K59/1315
Inventor 周志伟
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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