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Display device

A display device, display panel technology, applied in circuit devices, static indicators, reduction of crosstalk/noise/electromagnetic interference (etc.

Inactive Publication Date: 2014-01-29
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the printed circuit board 20 is provided with a plurality of components, including the above-mentioned connector 21 and the DC-DC converter 22, so the printed circuit board 20 has a certain width in structure (a portion of the connector 21 side to the side of the source driver string 30), it was considered in the early stage that the large current would interfere with other circuits, and the current output by the connector 21 was greater than the current output by the DC-DC converter 22, Therefore, the DC-DC converter 22 will be arranged at a position close to the connector 21, that is, the length of the first wiring 23 connecting the connector 21 to the DC-DC converter 22 is shorter than the length of the DC - the length of the second wiring 24 between the DC converter 22 and the source driver 30, however, in fact, after testing by the inventor, it is found that the EMI generated by the second wiring 24 is greater than that produced by the first wiring 23 EMI, that is to say, EMI is mainly derived from the output of the DC-DC converter to the source driver, so in order to improve the defects of the above-mentioned existing display devices, it is necessary to provide a display device that can improve electromagnetic interference

Method used

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Embodiment Construction

[0020] figure 2 A display device 100 is shown according to an embodiment of the present invention. The display device 100 includes a display panel 500, and the display panel 500 is provided with a gate driver string 400 in a first direction and a source driver string 300 in a second direction. The gate driver string 400 includes a plurality of gate drivers 410, 420, 430, 440; the source driver string 300 includes a plurality of source drivers 310, 320, 330, 340, although the illustrated embodiment has Four gate drivers and four source drivers, but it should be understood that alternative numbers of gate drivers and source drivers may be included in embodiments of the present invention.

[0021] In addition, in this embodiment, the display device 100 includes a power circuit 250 , a connector 210 , a DC-DC converter 220 , a first wire 230 and a second wire 240 . The connector 210, the DC-DC converter 220, the first wiring 230 and the second wiring 240 are arranged on the sid...

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PUM

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Abstract

The invention discloses a display device capable of reducing electromagnetic interference. The display device comprises a display panel, a connector, a DC-DC converter, a first wiring and a second wiring, wherein the display panel comprises a source driver and a grid driver, the first wiring is used for connecting the connector and the DC-DC converter, and the second wiring is used for connecting the DC-DC converter and the source driver. The DC-DC converter is arranged adjacent to the grid driver, the length of the first wiring is larger than the length of the second wiring, a current output path of the DC-DC converter is made to be the shortest, and the electromagnetic interference is reduced.

Description

technical field [0001] The invention relates to a display device capable of reducing electromagnetic interference. Background technique [0002] The driving process of a general display device is as follows: the output voltage of the power supply circuit provides various driving voltages required by the display panel through a DC-DC converter (DC-DC) in a printed circuit board assembly (PCBA). When the display device is driven, the electronic components in the display device will generate electromagnetic waves, which will cause the electronic components to generate electromagnetic interference (EMI), which may affect the quality of displayed images. Generally speaking, a large current will generate a large electromagnetic interference (EMI) phenomenon. [0003] Please refer to figure 1 A display device 10 in the prior art, the display device 10 includes a display panel 50, which has a source driver string 30 arranged in a first direction and a gate driver string 40 in a se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G2300/0426G09G2330/06G09G3/3696H05K1/0216H05K1/0286H02M3/04G09G2330/02
Inventor 郭东胜符俭泳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD