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Power management device and display device including the same

A technology for a power management device and a display device, which is applied in the fields of electrical digital data processing, output power conversion devices, data processing input/output processes, etc., and can solve problems such as non-compliance

Pending Publication Date: 2022-03-01
SILICON WORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as mentioned above, when the voltage imbalance between the drives becomes larger, there may be a problem where one drive becomes in-spec and the other becomes out-of-spec

Method used

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  • Power management device and display device including the same
  • Power management device and display device including the same
  • Power management device and display device including the same

Examples

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Embodiment Construction

[0026] figure 1 is a block diagram showing a display device according to an embodiment.

[0027] refer to figure 1 , the display device 100 may include a panel 110, a power management device 120, driving devices 130a to 130m, a wiring device 140, a timing control device 150, and the like.

[0028] A plurality of pixels P and a plurality of sensors SE may be arranged on the panel 110 .

[0029] The pixel P is a unit element for displaying an image, and brightness can be controlled according to a grayscale value included in pixel data. The pixels P are connected to the driving devices 130a to 130m through the data lines DL, and the driving devices 130a to 130m may supply the data voltage VD to the data lines DL to control brightness of the pixels P. The driving devices 130a to 130m may receive the image data RGB from the timing control device 150 or the like, convert pixel data included in the image data RGB into a data voltage VD corresponding to an analog voltage, and suppl...

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PUM

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Abstract

The invention relates to a power management device and a display device including the same. The present invention relates to a technique for a power management device suitable for a display device, in which driving voltages having different levels are supplied to driving devices having loads of different magnitudes at different times, and this allows: even if the number of driving devices increases according to the enlargement of a display panel, the display panel is not easily damaged; all drive devices also stably receive voltages within a limited range.

Description

technical field [0001] The present invention relates to techniques for supplying power to devices that drive display devices. Background technique [0002] As the size of a display panel becomes larger, the number of devices for driving the display panel has gradually increased. [0003] A representative device for driving the display panel is a source driver for driving data lines connected to pixels. The source driver may include a plurality of channels connected to the data lines one-to-one. However, since there is a limit to the number of channels that can be included in one source driver, a plurality of source drivers operate in divided regions in one display device. Furthermore, as the size of a display device becomes larger and thus the number of data lines increases, the number of source drivers included in one display device also increases. [0004] The large size of the display panel not only increases the number of driving devices, but also increases the length...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36H02M3/00H02M3/04H02M3/156
CPCG09G3/36H02M3/00H02M3/04H02M3/156G06F3/0416G06F3/04184G09G2320/0223G09G2310/08G09G3/20G09G2330/021G09G2330/028G09G2354/00G09G3/3685G09G2330/02G06F3/0412
Inventor 张健殊金亨燮卓定贤
Owner SILICON WORKS CO LTD
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