Backlight module circuit and liquid crystal display

A liquid crystal display and backlight module technology, applied to static indicators, instruments, etc., can solve problems such as consumption, luminous rate not proportional to current, lower TV energy efficiency level, etc., to achieve the effect of improving energy efficiency level and reducing power consumption

Inactive Publication Date: 2017-05-31
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, driving HDR and ordinary 2D backlights share a string of LEDs. When switching to HDR, the current to drive this string of LEDs will be several times higher than that of ordinary 2D backlights to achieve HDR effects. However, the luminous efficiency of LEDs is not proportional to the current. Consumes several times the power and reduces the energy efficiency rating of the TV

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backlight module circuit and liquid crystal display
  • Backlight module circuit and liquid crystal display
  • Backlight module circuit and liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] In addition, the following descriptions of the various embodiments refer to the attached drawings to illustrate specific embodiments in which the present invention can be implemented. The directional terms mentioned in the present invention, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., only is to refer to the direction of the attached drawings. Therefore, the direction terms used are for ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a backlight module circuit, which is applied to a liquid crystal display. The backlight module circuit comprises a plurality of subarea backlight units and a control unit, wherein each subarea backlight unit comprises a first string of light emitting diodes and a second string of light emitting diodes; the first strings of light emitting diodes and the second strings of light emitting diodes are connected to the control unit in a parallel mode; by virtue of the control unit, the first strings of light emitting diodes or the second strings of light emitting diodes are selectively lightened, wherein when the first strings of light emitting diodes are lightened, brightness of the first strings of light emitting diodes is the first brightness; when the second strings of light emitting diodes are lightened, brightness of the second strings of light emitting diodes is the second brightness; and the first brightness is greater than the second brightness. With the application of the backlight module circuit provided by the invention, the purposes of reducing power consumption and improving an energy efficiency grade of the liquid crystal display are achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module circuit and a liquid crystal display. Background technique [0002] HDR (High-Dynamic Range, high dynamic range image) has high dynamic contrast, which can enhance the audience's sense of presence in the screen and provide image quality contrast. Correspondingly, the LED current driving the TV backlight will be very large in order to achieve the brightness required by HDR. At present, driving HDR and ordinary 2D backlights share a string of LEDs. When switching to HDR, the current to drive this string of LEDs will be several times higher than that of ordinary 2D backlights to achieve HDR effects. However, the luminous efficiency of LEDs is not proportional to the current. It consumes several times the power and reduces the energy efficiency level of the TV. Contents of the invention [0003] The object of the present invention is to provide a backlight mod...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/3406
Inventor 李文东陈辛洪周丽
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap