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Backlight driving module and display equipment with same

A technology of backlight module and driver module, which is applied in the direction of light source, electric light source, static indicator, etc., can solve the problem of driver chip damage, and achieve the effect of avoiding driver chip damage

Active Publication Date: 2016-06-29
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the LED in any light string is damaged, it may cause damage to the driver chip

Method used

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  • Backlight driving module and display equipment with same
  • Backlight driving module and display equipment with same
  • Backlight driving module and display equipment with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] see figure 1 , which is a module diagram of the display device 100 in a preferred implementation manner. The display device 100 is used to display images.

[0015] The display device 100 includes a display panel 10, a backlight module 20 for providing planar light to the display panel 10, a display driver module 30 for driving the display panel 10 for image display, and a backlight driver module 40 for driving the backlight module 20. .

[0016] The backlight module 20 includes a plurality of light emitting units 21a-21n.

[0017] The backlight driving module 40 includes a driving circuit 41 , a plurality of switch units 42a~42n, and a plurality of detection units 43a~43n. Wherein, the switch units 42a-42n and the detection units 43a-43n correspond to the light-emitting units 21a-21n respectively.

[0018] The drive circuit 31 is used to output a drive voltage. In this embodiment, the driving circuit 31 is an integrated chip.

[0019] The switch units 42a-42n are ...

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PUM

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Abstract

The invention discloses a backlight driving module electrically connected with a backlight module and used for driving the backlight module. The backlight driving module comprises a driving circuit, a plurality of switching units and a plurality of detection units. The switching units and the detection units correspond to light emitting units one by one. The switching units are connected between the driving circuit and the corresponding light emitting units. The detection units compare the working voltages of two adjacent light emitting units and output control signals according to the comparison results. The switching units establish or cut off the electrical connection between the driving circuit and the light emitting units. The invention further provides display equipment with the backlight driving module.

Description

technical field [0001] The invention relates to a backlight driving module and a display device with the backlight driving module. Background technique [0002] The backlight module of the display device has a driver chip and several parallel connected light strings. The light string emits light according to the driving voltage provided by the driving chip. Wherein, each light string includes several light emitting diodes (Light emitting diodes, LEDs) connected in series. When any LED in any light string is damaged, the driver chip may be damaged. Contents of the invention [0003] In view of this, it is necessary to provide a backlight driver module that avoids damage to the driver chip. [0004] In addition, it is necessary to provide a display device that avoids damage to the driving chip. [0005] An electronic device includes a display panel, a backlight module, a display driver module and a backlight driver module. The backlight module is used to provide flat li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/22G09G3/34H05B37/02
Inventor 陈信遑李振昇徐嘉明
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD