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Pixel circuit, driving method thereof, display panel and display device

A pixel circuit and drive module technology, applied to static indicators, instruments, etc., can solve the problems of power supply voltage drop, hourglass of display screen, etc., and achieve the effect of eliminating the influence of display brightness and avoiding unevenness

Active Publication Date: 2018-07-17
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a pixel circuit and its driving method, a display panel and a display device, so as to solve the problem that the pixel circuit in the prior art will cause the display screen to appear an hourglass phenomenon, and there is a power supply voltage drop problem

Method used

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  • Pixel circuit, driving method thereof, display panel and display device
  • Pixel circuit, driving method thereof, display panel and display device
  • Pixel circuit, driving method thereof, display panel and display device

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Embodiment Construction

[0042] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] refer to figure 1 , shows a schematic structural diagram of a pixel circuit provided by an embodiment of the present invention. Including: a reset module 101, a charging module 102, a driving module 103, a light emitting module 104, a first capacitor C1 and a second capacitor C2;

[0044] The light emitting module 104 is respectively connected to the first node J1 and the first voltage input terminal VSS;

[0045] Two ends of the first capacitor C1 are connected to two ends of the light emitting module 104 respectively;

[0046] Both ends of the second capacitor C2 are respectively connected to the first node J1 and the second node J2;

[0047] The reset module 101 is respectively connected to the first node J1 and a res...

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Abstract

The invention provides a pixel circuit, a driving method thereof, a display panel and a display device. The pixel circuit comprises a reset module, a charging module, a driving module, a light emitting module, a first capacitor and a second capacitor; the light emitting module is connected with a first node and a first voltage input end separately; the two ends of the first capacitor are connectedwith the two ends of the light emitting module respectively; the two ends of the second capacitor are connected with the first node and a second node respectively; the reset module is connected withthe first node and the reset signal input end separately; the charging module is connected with the second node, the scanning signal input end, the data signal input end and the first control signal input end separately; the driving module is connected with the first node, the second node, the second control signal input end and the second voltage input end separately. The phenomenon that the brightness of pixel points is not uniform can be avoided, and the influence of power line voltage drop on the display brightness is eliminated.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit and its driving method, a display panel and a display device. Background technique [0002] The driving principle of the OLED (Organic Light-Emitting Diode, organic light-emitting diode) pixel circuit is to connect the OLED to one electrode of the driving tube, the other electrode of the driving tube is connected to the driving voltage, and the grid of the driving tube is connected to the data line through the switch tube. . The driving current input by the driving tube to the OLED has a quadratic relationship with the threshold voltage of the driving tube and the driving voltage, and the input voltage is converted into a current by the driving tube to drive the OLED to emit light. According to the transfer curve of the drive tube, the magnitude of the drive current is related to its threshold voltage. When there is a large difference in the threshold vo...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2310/0251G09G2300/0819G09G2300/0852G09G2300/0861G09G2310/0262G09G2320/045G09G3/3291G09G3/3266G09G2310/0248
Inventor 殷新社
Owner BOE TECH GRP CO LTD