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Pixel circuit and oled display panel

A technology of pixel circuit and display frame, applied in static indicators, instruments, etc., can solve the problem of insufficient charging of storage capacitor Cst, and achieve the effect of solving insufficient charging and increasing charging time.

Active Publication Date: 2020-10-16
SHENZHEN 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

[0006] The present invention provides a pixel circuit and an OLED display panel to solve the technical problem of insufficient charging of the storage capacitor Cst existing in the existing OLED panel

Method used

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  • Pixel circuit and oled display panel
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  • Pixel circuit and oled display panel

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Embodiment Construction

[0035] The technical solutions in the embodiments and / or examples of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention. Obviously, the embodiments and / or examples described below are only part of the implementation of the present invention. schemes and / or examples, rather than all implementations and / or examples. Based on the implementations and / or examples in the present invention, all other implementations and / or examples obtained by persons of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0036] The directional terms mentioned in the present invention, such as [top], [bottom], [left], [right], [front], [back], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the pre...

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PUM

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Abstract

The present invention provides a pixel circuit and an OLED display panel, wherein the pixel circuit includes: a driving circuit, a light emitting circuit, a switch circuit, a first storage circuit, and a second storage circuit; wherein the second storage circuit is used in the Under the control of the switch circuit, charging is performed during the light-emitting phase of the first display frame, and an operating voltage is provided to the driving circuit during the second display frame, so as to trigger the driving circuit to drive the light-emitting circuit to emit light. In the present invention, at least two storage circuits are set, one storage circuit is charged during the light-emitting phase of the first display frame, and then an operating voltage is provided to the drive circuit during the second display frame, so as to trigger the drive circuit to drive the The above-mentioned light-emitting circuit emits light, which realizes the simultaneous charging of the storage circuit and the light-emitting of the panel, and based on this, the charging time can be greatly increased.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel circuit and an OLED display panel. Background technique [0002] The existing AMOLED (Active Matrix Organic Light Emitting Diode, Active Matrix Organic Light Emitting Diode) display panel is widely used because it is lighter and thinner than the liquid crystal display panel. [0003] At present, the development of large-size AMOLED panels usually adopts such as figure 1 The 3T1C pixel circuit architecture shown, as figure 2 As shown, in the data signal writing phase of a display frame, the scanning line Gate first inputs a high voltage, and the switching transistor T1 is turned on to complete the charging of the storage capacitor Cst. At this time, the light-emitting switching tube T2 is turned off. In the light-emitting phase, the scanning circuit Gate inputs a low voltage, the switching transistor T1 is turned off, the light-emitting switching transistor T2 is turne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G3/3233
Inventor 李艳
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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