Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Array substrate, driving method thereof, organic light-emitting display panel, and display device

A technology for array substrates and light-emitting devices, applied in static indicators, instruments, etc., can solve the problems of abnormal display, influence on display stability, drift of driving transistor characteristics, etc., and achieve the effect of improving stability

Active Publication Date: 2020-07-03
WUHAN TIANMA MICRO ELECTRONICS CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide an array substrate, a driving method thereof, an organic light-emitting display panel, and a display device, which are used to solve the problem of characteristic drift of the driving transistor caused by the source of the driving transistor being under the same bias voltage for a long time in the prior art, resulting in Display abnormalities and problems affecting the stability of the display

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Array substrate, driving method thereof, organic light-emitting display panel, and display device
  • Array substrate, driving method thereof, organic light-emitting display panel, and display device
  • Array substrate, driving method thereof, organic light-emitting display panel, and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] Figure 5a Each pixel unit 40 includes a pixel compensation circuit and a voltage control circuit, that is, each pixel unit 40 includes 3 transistors and 2 capacitors. To Figure 5a The structure of the circuit in the pixel unit 40 on the left side of the array substrate shown as an example is combined with Figure 7a The timing diagram is shown for explanation. Specifically, select such as Figure 7a The shown input timing diagram has four stages: initialization stage T1, threshold compensation stage T2, data writing stage T3, and light-emitting stage T4. Among them, in the initialization phase T1 and the threshold compensation phase T2, the voltage of the signal output by the data signal terminal Data is V in , The V in Much smaller than the voltage V of the signal at the initialization signal terminal Vinit init , Namely V in init . The signal output by the data signal terminal Data at least during the data writing phase T3 is the specific gray-scale voltage V d...

Embodiment 2

[0136] Figure 5b The pixel compensation circuits in two adjacent pixel units 40 share a voltage control circuit, that is, each pixel unit 40 includes 2.5 transistors and 2 capacitors. Among them Figure 5b The structure of the circuit in the pixel unit 40 on the left and the pixel unit 40 on the right in the array substrate shown as an example is combined Figure 7a The timing diagram is shown for explanation. Specifically, select such as Figure 7a The shown input timing diagram has four stages: initialization stage T1, threshold compensation stage T2, data writing stage T3, and light-emitting stage T4. Among them, in the initialization phase T1 and the threshold compensation phase T2, the voltage of the signal output by the data signal terminal Data is V in , The V in Much smaller than the voltage V of the signal at the initialization signal terminal Vinit init , Namely V in init . The signal output by the data signal terminal Data at least during the data writing phase...

Embodiment 3

[0149] Figure 5c The pixel compensation circuits in all the pixel units 40 in the middle row share a voltage control circuit, that is, each pixel unit 40 includes 2 transistors and 2 capacitors respectively. Among them, only one row including two pixel units 40 is taken as an example, such as Figure 5c Shown, and with Figure 5c The structure of the circuit in the pixel unit 40 on the left and the pixel unit 40 on the right in the array substrate shown as an example is combined Figure 7a The timing diagram is shown for explanation. Specifically, select such as Figure 7a The shown input timing diagram has four stages: initialization stage T1, threshold compensation stage T2, data writing stage T3, and light-emitting stage T4. Among them, in the initialization phase T1 and the threshold compensation phase T2, the voltage of the signal output by the data signal terminal Data is V in , The V in Much smaller than the voltage V of the signal at the initialization signal terminal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses an array substrate, a driving method thereof, an organic light emitting display panel, and a display device. The array substrate comprises a plurality of light emitting devices, pixel compensation circuits connected to the light emitting devices, and a plurality of initialization control circuits located in a peripheral region of the array substrate. All of the pixel compensation circuits in each row share one initialization control circuit, which simplifies the structure of each pixel compensation circuit and reduces the occupation area of the pixel compensation circuits in the display area. The first pole of a driving transistor in each pixel compensation circuit is connected to the common initialization control circuit. The initialization control circuit is used to provide the signal of the initialization signal terminal to the first pole of each of the connected driving transistors under the control of the first scanning signal terminal, so that the first pole of the driving transistor can be prevented from being at the same bias voltage for a long time, the threshold voltage and mobility drift of the driving transistor can be improved to slow down the decay rate of the driving transistor, thereby improving the stability of the display.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to an array substrate, a driving method thereof, an organic light emitting display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) is one of the hotspots in the field of flat panel display research. Compared with Liquid Crystal Display (LCD), OLED display has low energy consumption, low production cost, self-luminous, and wide viewing angle. And the advantages of fast response. Currently, OLED displays have begun to replace traditional LCD displays in the display fields of mobile phones, tablet computers, and digital cameras. [0003] Unlike LCDs that use a stable voltage to control brightness, OLEDs are current driven and require a stable current to control their light emission. Generally, the OLED is driven to emit light by the driving transistor of the pixel driving circuit in the OLED display. Among them, when the driving transi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 向东旭李玥高娅娜陈泽源
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com