Small-spacing LED full-color display screen achieved by virtue of single-layer PCB board (printed circuit board)

A technology for PCB boards and display screens, applied in static indicators, instruments, identification devices, etc., which can solve the problems of many PCB layers, high cost, and inability to make ultra-thin

Inactive Publication Date: 2016-02-03
SHANGHAI TIEGE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking the P4 (pixel pitch 4mm) module as an example, four to six layers of PCB boards are needed, and because the number of PCB layers increases, the cost continues to increase, and it is impossible to make ultra-thin and bendable LED full-color display, and it is impossible to transplant the traditional LED full-color display to a transparent LED full-color display with glass as the substrate.

Method used

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  • Small-spacing LED full-color display screen achieved by virtue of single-layer PCB board (printed circuit board)
  • Small-spacing LED full-color display screen achieved by virtue of single-layer PCB board (printed circuit board)
  • Small-spacing LED full-color display screen achieved by virtue of single-layer PCB board (printed circuit board)

Examples

Experimental program
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Embodiment Construction

[0015] Such as figure 1 As shown: the driver IC bare chip is integrated with a power filter, serial decoding circuit, PWM control circuit, LED constant current control circuit, driver output circuit, shaping forwarding circuit and OSC (abbreviation of oscillator) crystal oscillator. The chip has 2 signal inputs (Din1, Din2), 2 signal outputs (Dout1, Dout2), 3 LED control outputs (R, G, B), 1 positive power supply (VDD), 1 power ground (GND ).

[0016] Such as figure 2 Shown: Terminal block connected to interface unit. Terminal 10 / 11 / 12 is the power ground; 13 and 14 are data input, respectively connected to the signal input Din2 of the first and second drive IC; 15 is another signal input, connected to the signal of the first drive IC Input Din1; 16 / 17 / 18 is the positive power supply, which is connected to the positive power supply (VDD) of all drive ICs and the positive power supply of LED lights; the LED control output R, G, B of each drive IC is connected to the red, ...

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Abstract

The invention provides a small-spacing LED full-color display screen achieved by virtue of a single-layer PCB board (printed circuit board). The pixel pitch of the display screen is less than 4mm; and the LED full-color display screen is an ultrathin bendable single-faced display screen which is 1mm or a double-faced display screen which is 3mm.

Description

technical field [0001] The invention relates to the field of LED display. Background technique [0002] The LED full-color display screen of the prior art is a three-in-one LED lamp made of a single-color LED chip or three chips of red (R), green (G) and blue (B). Together with the drive IC and capacitors, current limiting resistors, decoders and other components, they are welded on both sides of the substrate of more than two layers of PCB boards (usually glass fiber boards), and then tested, glue injected, glued, aged, and assembled into LEDs mod. Taking the P4 (pixel pitch 4mm) module as an example, a PCB board with four to six layers is required, and because the number of layers of the PCB increases, the cost continues to increase, and it is impossible to make an ultra-thin and bendable LED full-color display screen, also can't transplant traditional LED full-color display screen to the transparent LED full-color display screen with glass as substrate. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33G09G3/32
CPCG09F9/33G09G3/32
Inventor 林志芹罗芳臣刘自军
Owner SHANGHAI TIEGE TECH CO LTD
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