Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dynamic dimming circuit for splicing large-area field emission backlight

A field emission and dynamic dimming technology, applied in static indicators, instruments, etc., can solve problems such as narrow color gamut, high power consumption, and large volume, and achieve the effects of simple circuit, long service life, and low energy consumption

Active Publication Date: 2012-06-27
FUZHOU UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cold-cathode fluorescent lamps contain metal mercury that is harmful to the environment, narrow color gamut, insufficient brightness uniformity, short life, large volume, and high power consumption, which are gradually inhibiting their application in the field of large-area backlights.
However, semiconductor light-emitting diode backlight requires a heat sink, which has problems such as high cost and difficulty in achieving better uniformity, and it is difficult to be widely used in large-size and ultra-large-size display devices.

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
  • Dynamic dimming circuit for splicing large-area field emission backlight
  • Dynamic dimming circuit for splicing large-area field emission backlight
  • Dynamic dimming circuit for splicing large-area field emission backlight

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0016] Please refer to figure 1 , figure 1 It is a schematic diagram of the overall structure of the spliced ​​large-area field emission backlight of the present invention. The backlight 11 includes a plurality of grid-type field emission backlight units 12, and all the backlight units 12 can be square, triangular, rectangular, trapezoidal, or regular polygonal. etc. are arranged according to certain rules, and each backlight unit is relatively independent, and driving signals can be applied separately without affecting each other.

[0017] figure 2 It is an overall schematic diagram of a dynamic dimming circuit of a spliced ​​large-area field emission backlight of the present invention. As shown in the figure, the dynamic dimming circuit mainly includes three parts, a video signal receiving and processing module 21, a frame storage Modu...

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 relates to a dynamic dimming circuit for splicing large-area field emission backlight. The backlight is formed by splicing a plurality of triode field emission backlight units with certain regular shapes, wherein each backlight unit is relatively independent. The dynamic dimming circuit is characterized by comprising a video signal receiving and processing module, a frame storage module and a driving module, wherein the video signal receiving and processing module generates a luminance control signal of each field emission backlight unit according to the received video signal; the frame storage module is used for storing video image data and has a data caching effect; and the driving module performs current and voltage amplification on the luminance control signals so as to drive the field emission backlight.

Description

technical field [0001] The invention relates to a liquid crystal display device, in particular to a dynamic dimming circuit of a spliced ​​large-area field emission backlight, which belongs to the field of backlight, and also belongs to the field of video signal processing and control and the field of drive of field emission devices. Background technique [0002] At present, liquid crystal display (LCD) has been widely used in TVs, mobile phones, computers, monitors and other equipment. As an indispensable part of LCD, backlight is mainly used at present. LED) assembled. However, cold-cathode fluorescent lamps contain metal mercury that is harmful to the environment, narrow color gamut, insufficient brightness uniformity, short life, large volume, and high power consumption, which are gradually inhibiting their application in the field of large-area backlights. However, semiconductor light-emitting diode backlight sources require heat sinks, which have problems such as high...

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 Patents(China)
IPC IPC(8): G09G3/34G09G3/36
Inventor 林志贤郭太良姚剑敏叶芸张永爱徐胜陈志龙
Owner FUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com