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Isolation pad detecting device and method

A detection device and detection method technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of inaccurate measurement, abnormal liquid crystal cell thickness, and relatively high requirements for device vibration, and achieve the effect of simple detection equipment

Active Publication Date: 2014-04-02
HEFEI BOE OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the CCD image rectangular area sensor is generally used to directly detect the spacer, the measurement speed is relatively slow, and the vibration requirements of the device are relatively high. Small abnormalities will cause inaccurate measurement, resulting in abnormal thickness of the liquid crystal cell. And the display effect of the LCD screen will have a great impact, and will cause many defects, such as low temperature bubbles (Bubble), etc., which affect the quality of the LCD display; it is necessary to use a marble base, a lower shockproof table, etc., which will affect the installation of the equipment. The requirements are relatively high; only surface inspection can be carried out, and internal damage cannot be detected

Method used

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Experimental program
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Effect test

Embodiment 1

[0037] This embodiment proposes a spacer detection device, including: an X-ray imaging unit and an image processing unit, wherein the X-ray imaging unit includes an X-ray source and an X-ray sensitive lens;

[0038] X-ray source for generating X-rays transmitted through the substrate with the spacer;

[0039] X-ray sensitive lens, which receives X-rays passing through the substrate and forms a grayscale image;

[0040] The image processing unit measures the height of the spacer by using the grayscale image.

[0041] In this embodiment, the X-ray source is an X-ray array source, and the X-ray sensitive lens is an X-ray sensitive CCD flat panel detector. Specifically, such as figure 1 As shown, an X-ray array source 11 controlled by an X-ray controller (not shown in the figure) emits X-rays to the substrate 1 with spacers. X-ray sensitive CCD Flat Panel Detector (Flat Panel Detector, FPD) 21 is a kind of FPD that obtains images indirectly, mainly consists of a scintillator or...

Embodiment 2

[0059] The difference between the spacer detection device of this embodiment and the first embodiment lies in the X-ray imaging unit, that is, the mechanical structure of the device and the optical structure of the X-ray imaging unit. There are two X-ray imaging units in this embodiment, which are opposite to each other with respect to the substrate. The X-ray sensitive lens of any one of the X-ray imaging units receives the X-rays transmitted through the substrate by the X-ray source of the other X-ray imaging unit, forming gray degree image. And the two X-ray imaging units can move on the arc track, so that the angle at which the X-rays enter the substrate changes. The specific structure of the spacer detection device of this embodiment is as follows: figure 2 shown. A pair of X-ray imaging units 301 are installed on the circular arc track 302 and can move on the circular arc track 302, but they are always relatively arranged in a straight line to facilitate imaging. The...

Embodiment 3

[0064] This embodiment provides a spacer detection method, such as Figure 4 As shown in the flow chart, including:

[0065] S1: Generate X-rays that pass through the substrate with a spacer, receive X-rays that pass through the substrate and form a grayscale image;

[0066] S2: Measuring the height of the spacer using the grayscale image.

[0067] In step S1, forming the grayscale image may be inversely compounding the reverse grayscale image and the front grayscale image of the same area to obtain a grayscale image for measuring the height of the spacer. For example, the reverse grayscale image and the front grayscale image of the same area can be obtained through the opposing X-ray imaging unit of the spacer detection device of the second embodiment, so that one of them can be reversed and composited with the other image. This eliminates artifacts caused by signal errors. In addition, if the gray value of a certain area of ​​the gray image exceeds the set threshold, it m...

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Abstract

The invention discloses an isolation pad detecting device and method. The method includes: producing the X ray penetrating a substrate with an isolation pad, receiving the X ray, and forming a grayscale image; using the grayscale image to measure the height of the isolation pad. The method has the advantages that the X ray imaging principle is used to detect the isolation pad on the color film substrate, an X ray fluorescent light converting device is used to produce visible light and generate the grayscale image, the grayscale image is identified and processes to accurately measure the height of the isolation pad, and the internal and connecting states of the isolation pad can also be detected.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a spacer detection device and method. Background technique [0002] With the development of technology, liquid crystal displays have been frequently used in various devices. Currently, a liquid crystal display is a common flat panel display, and a Thin Film Transistor-Liquid Crystal Display (TFT-LCD for short) is a mainstream product in the liquid crystal display. TFT-LCD generally includes an array substrate and a color filter substrate arranged in opposite cells, and a liquid crystal layer is filled between the array substrate and the color filter substrate. Wherein, a spacer is provided between the array substrate and the color filter substrate, and the spacer plays a role of supporting the thickness of the array substrate and the color filter substrate. [0003] The spacer is an important part of the liquid crystal display, and the height of the spacer determ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
Inventor 井杨坤李桂张宏远刘卫卫
Owner HEFEI BOE OPTOELECTRONICS TECH
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