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Pixel driving circuit, driving method and display panel

A pixel drive circuit and electrical connection technology, applied to static indicators, instruments, etc., can solve the problems of inorganic light-emitting diodes, such as the length of light-emitting time and poor working stability, to achieve the effect of ensuring luminous efficiency and improving working stability

Active Publication Date: 2020-06-05
XIAMEN TIANMA MICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a pixel driving circuit, a driving method and a display panel to solve the problem of poor working stability of inorganic light-emitting diodes when they emit light

Method used

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

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Embodiment Construction

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0025] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0026] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0027] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a pixel driving circuit, a driving method and a display panel, and relates to the technical field of display. The pixel driving circuit comprises an inorganic light emitting diode which is electrically connected to a first power supply signal end, a first control unit which is electrically connected to a second data signal end, a second scanning signal end and a third nodeand is used for controlling the inorganic light emitting diode to work under set current density, and a second control unit which is electrically connected to a first data signal end, a first scanningsignal end, a slope voltage signal end, a third node and a second power supply signal end and is used for controlling the light emitting duration of the inorganic light emitting diode. The second control unit comprises a first transistor, and the first transistor is an oxide thin film transistor. The driving method is used for driving the pixel driving circuit to work. According to the invention,the leakage current of the inorganic light-emitting diode within the light-emitting duration can be reduced, so that the circuit is more stable.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to a pixel driving circuit, a driving method and a display panel. Background technique [0002] With the continuous development of display technology, people's requirements for power consumption, service life, resolution, brightness, color saturation, etc. Low cost, fast response time, small size, long life and many other advantages have been widely used in display panels. Micro LED has better performance than OLED (Organic Light Emitting Diode) in terms of brightness, response speed, contrast, and color saturation. Under the same low power conditions, micro-LED can achieve greater brightness. In contrast, power consumption is 90% lower than LCD and 50% lower than OLED. The display life of micro-LED is also longer than that of OLED. The smaller size of micro-LED can also make high resolution easier to achieve, and the response time of micro-LED is reduced to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3291G09G3/3266G09G3/32
CPCG09G3/32G09G3/3208G09G3/3266G09G3/3291G09G2310/0259
Inventor 赖青俊朱绎桦
Owner XIAMEN TIANMA MICRO ELECTRONICS
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