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Pressure testing fixture and measuring method

A pressure test, liquid crystal panel technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of inability to fully ensure the product quality of LCD, poor precision, and labor-intensive

Inactive Publication Date: 2006-02-01
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, this traditional testing method is manually operated, which is not only labor-intensive but also has poor precision. It is impossible to know whether the applied pressure really meets the quality requirements, so the quality of LCD products cannot be fully guaranteed.

Method used

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  • Pressure testing fixture and measuring method
  • Pressure testing fixture and measuring method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Fig. 1 is a schematic block diagram of a preferred embodiment of the pressure test fixture of the present invention, including a power supply 1, an operation interface 2, a programmable logic controller 3, a routing controller (RC) in this embodiment CONTROLLER) 4, a pressure-applying mechanism 5 and a pressure gauge 6, wherein: power supply 1, in this preferred embodiment is connected to a commercial AC power supply 11 by a power supply 10, in order to the alternating current of 220 volts Converted to 24 volts DC output. The operation interface 2 is connected to the power supply 10. In this preferred embodiment, there are several operation function keys, including the power activation key 20, which can be used to activate the power supply; the power off key 21, which can turn off the power supply of the operation interface 2 The automatic operation key 22 can ...

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Abstract

A pressure tester and its measuring method for LCD products are disclosed. When a RC controller receives an instruction from a programmable logic controller, it sends a relative instruction to a pressure applying mechanism to move the pressure probe to particular position until it touches with LCD screen while feeding the relative signals back to RC controller and programmable logic controller for making judgement. When applied pressure is higher than a predefined value, a signal is fed back to the programmable logic controller to stop the applying pressure.

Description

technical field [0001] A pressure test fixture and a measuring method thereof, in particular a pressure test fixture and a measuring method applicable to testing the pressure value acting on a liquid crystal panel (LCD). Background technique [0002] In order to ensure the product quality of LCD panels, a pressure test step is generally included in the manufacturing process. The traditional pressure test operation method is to place a weight of 450-500 grams on the LCD panel, pick it up after a few seconds, and then Observe the disappearance and recovery of the anti-white or ripple after the LCD panel is pressed. [0003] However, this traditional testing method is manual, which not only consumes manpower but also has poor precision. It is impossible to know whether the applied pressure really meets the quality requirements, so the quality of LCD products cannot be fully guaranteed. [0004] In order to solve the above problems, the present invention proposes a pressure tes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/14
Inventor 林炳煌徐春杰陈文川林源峰
Owner CHUNGHWA PICTURE TUBES LTD