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 the problems of high power consumption, short life, narrow color gamut, etc., and achieve the effect of low energy consumption, long service life and simple circuit
CN101976549AActive Publication Date: 2011-02-16FUZHOU UNIV
4 Cites 17 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2011-02-16

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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