A pin automatic alignment method between a small liquid crystal display glass plate and an ic plate

Abstract

A method for automatically aligning the pins of a small liquid crystal display glass plate and an IC plate, which is divided into the following steps to achieve alignment: 1. Determine the corresponding relationship between camera coordinates converted into world coordinates through PC control software; 2. Collect standard products The position of the left outer target, the right outer target of the glass plate and the left and right targets of the IC board inside the glass plate; Position correspondence; 4. Actual production, collect the positions of the left and right external targets of the glass plate and the left and right targets of the IC; 5. Calculate the positions of the virtual left and right external targets of the glass plate, and the positions of the left and right external targets of the IC plate According to the calculation results, the electric alignment platform drives the glass plate to automatically move a certain amount to complete the alignment program between the glass plate signal input terminal pins and the IC board pins. The alignment speed of the invention is fast and the alignment 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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