Pixel circuit, backlight module and display panel

A technology of pixel circuits and power lines, applied in the fields of pixel circuits, backlight modules, and display panels, can solve the problems of difficulty in meeting the demand for high-quality display and a small number of grayscales, and achieves reduction of occupied space, improvement of grayscale accuracy, The effect of increasing the aperture ratio

Pending Publication Date: 2022-06-21
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0003] The self-illuminating display is usually realized by the corresponding pixel circuit, and the pixel circuit is divided into internal compensation pixel circuit and external compensation pixel circuit, but if the internal compensation pixel circuit is driven by pulse width modulation, its The number of gray scales that can be achieved is still small, and it is difficult to meet the needs of high-quality display

Method used

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  • Pixel circuit, backlight module and display panel
  • Pixel circuit, backlight module and display panel
  • Pixel circuit, backlight module and display panel

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0026] like figure 1 As shown, the related art provides an internal compensation type pixel circuit, the pixel circuit includes a driving transistor T1, a voltage stabilizing capacitor C1, a coupling capacitor C2, a writing transistor T2, a reset transistor T4, a compensation transistor T3, and a light-emitting control transistor T5. and the light-emitting device D1.

[0027] The gate of the drive transistor T1 is connected to one end of the...

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Abstract

The invention discloses a pixel circuit, a backlight module and a display panel, the pixel circuit comprises a driving unit, a voltage stabilizing unit, a coupling unit, a write-in unit and a black frame insertion unit, one end of the black frame insertion unit is connected with the control end of the driving unit, the other end of the black frame insertion unit is connected with a first power line, and the control end of the black frame insertion unit is connected with a second control line; the driving units can be closed in a plurality of different time lengths, so that a plurality of non-equal molecular fields are constructed, and the number of gray scales can be increased.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to a pixel circuit, a backlight module, and a display panel. Background technique [0002] With the vigorous development of the display industry, people's requirements for display media are getting higher and higher. High contrast, high color saturation, and fast response speed make self-luminous display one of the main development directions of the industry. [0003] Self-luminous displays are usually implemented with corresponding pixel circuits, and pixel circuits are further divided into internal compensation pixel circuits and external compensation pixel circuits. However, if the internal compensation pixel circuit is driven by pulse width modulation, its The number of grayscales that can be realized is still small, and it is difficult to meet the demand for high-quality display. SUMMARY OF THE INVENTION [0004] The present application provides a pixel circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30G09G3/34G09G3/20
CPCG09G3/30G09G3/3406G09G3/2007
Inventor 刘斌
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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