Display panel thin grinder

Abstract

The invention discloses a display-panel thinning grinding machine, consisting of an overhead supply tank (1), a storage tank for grinding fluid (2), a grinding platform, a grinding fluid pipe (3) connecting with the storage tank for grinding fluid (2) and the overhead supply tank (1) and a plurality of catheters (4) connecting with the overhead supply tank (1) and the grinding platform, wherein the connecting ports between the catheters (4) and the overhead supply tank (1) are located at the bottom of the overhead supply tank (1), and the grinding fluid pipe (3) is connected from the top central location of the overhead supply tank (1). Besides, a water pipe (5) and a compressed air pipe (6) are respectively connected to the grinding fluid pipe (3). The invention enables the flow of grinding fluid provided to a system is uniform and the grinding efficiency of different regions of a glass substrate keeps the same; at the same time, the invention can clean the grinding fluid left in the pipe in a better way, thereby avoiding the impact of grinding fluid on a attached polishing pad, lowering cost, facilitating cleaning, saving maintenance time and improving yields.

Description

technical field [0001] The invention belongs to a display panel manufacturing equipment, in particular to a display panel thinning grinder. Background technique [0002] Display panels such as liquid crystal display screens have been more and more applied to portable electronic devices (such as notebook computers, PDAs, etc.), and weight is one of the focuses of portable products. Every gram of weight reduction is valuable. of. Making the glass of the liquid crystal display as thin as possible is one of the ways to reduce the weight. Today, the glass thickness of some finished LCD screens has been reduced from the usual 0.9 mm to 0.2 mm. To achieve such a glass thickness, it needs to be achieved through a grinding process. [0003] At present, the commonly used grinding equipment for display panel thinning can be referred to as shown in Figure 1, which includes an overhead feed tank, a grinding liquid storage tank, a grinding platform, connecting the grinding liquid stora...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this structure of grinding equipment is that the flow distribution of the grinding liquid supply is not uniform, resulting in inconsistent polishing rates in different areas of the glass substrate, increasing the working time (tack time) and increasing manufacturing costs.

[0006] However, there are still some disadvantages in the structure of this water pipe access at present: (1) after the solenoid valve stops water supply, a section of water will remain in the water pipe between the solenoid valve and the overhead supply tank (head tank), and the water pipe in the water pipe The water will flow out uncontrollably. When the polishing pad is pressed, the water may cause the polishing pad to be not firmly attached, shorten the life of the polishing pad, and increase the cost

); (2) When cleaning the machine, the grinding fluid remaining in the grinding fluid pipeline cannot be cleaned with water. If the machine is shut down for a long time, the grinding fluid will agglomerate in the pipeline and it is not easy to find and clean; agglomeration, Foreign matter that cannot be cleaned can cause blockages in the pipeline and, if hard particles flow into the grinding system, cause fragments

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