Method for automatically aligning pins of small liquid crystal display board plate and IC board

Abstract

The invention discloses a method for automatically aligning pins of a small liquid crystal display board plate and an IC board. Aligning is achieved through the following steps that 1, the corresponding relationship of converting of camera coordinates into world coordinates is determined through PC control software; 2, the positions of a left outer target and a right outer target of the standard product glass board and left and right targets, in the glass board, of the IC board are collected; 3, the corresponding relationship of the positions of the left outer target and the right outer targetof the standard product glass board and the left and right targets of the IC board are calculated; 4, actual production is conducted, specifically, the positions of the left outer target and the right outer target of the glass board and the left and right targets of the IC board are collected; and 5, the positions of a virtual left outer target and right outer target of the glass board, and the offset of the virtual left outer target and right outer target to the left and right targets of the IC board are calculated, according to the calculation results, calculation control software transmitsthe calculated offset, needed for aligning of the glass board signal input end pins and the pins of the IC board, of an electric aligning platform to the electric aligning platform, and the electricaligning platform drives the glass board to automatically move by a certain amount to complete the aligning program of the glass board signal input end pins and the pins of the IC board. The aligningspeed is high, and aligning is accurate.

Description

technical field [0001] The invention relates to the technical field of manufacturing small liquid crystal display screens (such as liquid crystal display screens of handheld game machines), in particular to an automatic alignment method for pins of a glass plate of a small liquid crystal display screen and an IC board. Background technique [0002] Small liquid crystal displays are widely used in fields such as game consoles and small video players due to their good display effect, thinness, and energy saving. The structure of the small liquid crystal display is mainly a display glass plate (special glass plate for liquid crystal display), a display IC board (integrated circuit board) and other supporting components. When working, the display IC board processes various information and passes multiple output PIN The pins go into the display glass so that the glass display displays images. The position alignment of the PIN pin of the signal input terminal of the glass display...

AI Technical Summary

Problems solved by technology

However, when the distance between the two targets on the glass plate is not equal to the distance between the two targets on the IC, and the relative positions are asymmetrical, since the two targets can no longer be used as reference objects, the alignment is very cumbersome, and the existing technical solutions Most of them use manual alignment and semi-automatic alignment.

Manual alignment means that the operator constantly observes the magnified image captured by the camera on the computer display screen, so as to observe the relative position of the glass plate signal input pin and the pin of the IC plate, and manually adjust the displacement platform until the glass plate The alignment between the signal input terminal pins and the pins of the IC board is completed; due to the influence of the subjective evaluation of the operator, the production efficiency and alignment effect of manual alignment are not good, and the produced products are of low quality and low efficiency, and the alignment It is difficult to recruit technicians and requires long-term training to become proficient, so the manual alignment method can no longer meet the requirements of high quality and high efficiency

Semi-automatic alignment means that the operator uses the pressure test table to align the pins of the signal input terminal of the glass plate with the PIN pins of the IC board; when in use, the operator continuously improves the alignment offset compensation value according to the alignment situation of the test press , that is, through a blind test until the alignment press is successful; this semi-automatic alignment needs to calibrate the compensation value before production, the process is more complicated, and the preparation time is long

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