Circuit and method for eliminating LED display screen ghost image and caterpillar phenomenon

A technology of LED display and caterpillar, applied in static indicators, instruments, etc., can solve the problems of incomplete solution of ghost and caterpillar phenomenon, difficult wiring of printed circuit board, large number of control chips, etc., to achieve the elimination of fuzzy bugs, improve display quality, and improve efficiency

Inactive Publication Date: 2016-06-01
俞德军
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned prior art, the purpose of the present invention is to provide a circuit and method for eliminating ghost images and caterpillars on LED display screens, which aims to solve the problem of system clock occupation in the prior art, incomplete discharge of the used parasitic capacitors, and so on. The number of control chips used is large, the wiring of the printed circuit board is difficult, the phenomenon of ghosts and caterpillars is not completely solved, the refresh frequency is limited and the cost is high, etc. Technical problems

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
  • Circuit and method for eliminating LED display screen ghost image and caterpillar phenomenon
  • Circuit and method for eliminating LED display screen ghost image and caterpillar phenomenon
  • Circuit and method for eliminating LED display screen ghost image and caterpillar phenomenon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] In this example, a circuit that cooperates with a row driver chip and a column driver chip to eliminate ghost images and caterpillar phenomena, such as figure 2As shown, the driver chip discharge unit 201 is connected to the anode terminal of the LED lamp, and the column driver chip charging unit 202 is connected to the column driver chip discharge unit 203 and the cathode terminal of the LED lamp; specifically, the row driver chip discharge unit 201 includes the row driver discharge signal DCGH , the first transistor M1 and the first resistor R1, the row driving discharge signal DCGH is connected to the gate terminal of the first transistor M1, the source terminal of the first transistor M1 is connected to the ground, and the drain terminal of the first transistor M1 is connected to the first resistor R1 One end of the first resistor R1 is connected to one end of the first resistor R1 and one end of the row selection switch MP0 and the anode of the LED lamp; the column...

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 circuit and method for eliminating an LED display screen ghost image and a caterpillar phenomenon, relates to the field of LED drive design and is to solve the technical problems of system clock occupation, partial discharge of used parasitic capacitors, larger number of used control chips, large wiring difficulty of a printed circuit board, un-thorough settlement of the ghost images and the caterpillar phenomenon, limited refresh frequency and high cost and the like in the prior art. The circuit for eliminating the LED display screen ghost image and the caterpillar phenomenon mainly comprises a line drive chip discharge unit, a row drive chip charge unit and a row drive chip discharge unit. The line drive chip discharge unit is connected with the anode end of an LED lamp; and the row drive chip charge unit is connected with the row drive chip discharge unit and the cathode end of the LED lamp. Through cooperation of line drive chips and row drive chips, the LED lamp is charged and discharged to eliminate the ghost image and the caterpillar phenomenon, thereby improving display quality of the LED display screen obviously.

Description

technical field [0001] The invention relates to the field of LED drive design, in particular to a circuit and method for eliminating ghost images and caterpillar phenomena on LED display screens. Background technique [0002] With the hot discussion of global economic development and environmental protection, LED has attracted much attention in the field of information display due to its advantages of high efficiency and green environmental protection. The proportion of green LED display in the field of information display is increasing day by day, and its share in the display market is increasing day by day. It is inseparable from the LED display drive control technology that supports its rapid development. Therefore, the pros and cons of LED display driver chips play a crucial and even decisive role in the economic benefits of the entire LED display. [0003] At the same time, many disadvantages of LED displays are also increasingly apparent. Among them, ghost images and ...

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): G09G3/32
CPCG09G3/32G09G2320/0257
Inventor 俞德军田志辉
Owner 俞德军
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