Surface detection device

A surface inspection and to-be-detected technology, applied in measuring devices, optics, instruments, etc., can solve problems such as slow detection speed, insufficient detection accuracy, and residuals, to avoid inaccurate alarms, improve display effects, and control the thickness of the box. Effect

Inactive Publication Date: 2014-03-26
HEFEI BOE OPTOELECTRONICS TECH +1
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Problems solved by technology

[0006] In the prior art, the height detection of the spacer usually uses a charge-coupled device CCD lens to measure the gray level difference, which has the disadvantages of insufficient detection accuracy and slow detection speed; and the internal structure and elasticity of the spacer The modulus cannot be detected through the CCD lens; while the existing technology measures and monitors the amount of liquid crystal in the liquid crystal bottle, it uses a sensor to perform residual correction, and it is set to occur when a certain amount of liquid crystal remains in the liquid crystal bottl

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[0031] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0032] The surface detection device used in the display panel of the present invention uses the ultrasonic distance measuring principle of the piezoelectric ultrasonic transducer to measure the surface to be detected of the display panel, so that the detection result is more accurate.

[0033] The present invention specifically implements the surface detection device, including:

[0034] An ultrasonic transducer detection unit, configured to emit ultrasonic waves to the surface to be detected, and to obtain a feedback signal fed back after the ultrasonic waves reach the surface to be detected;

[0035] A processing unit, configured to calculate the position of the surface to be detected according to the feedback signal.

[0036] In the present invention...

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Abstract

The invention provides a surface detection device used for surface detection of devices on a display panel. The surface detection device comprises an ultrasound transduction detection unit and a processing unit, wherein the ultrasound transduction detection unit is used for sending ultrasound waves to a surface to be detected and obtaining feedback signals fed back by the ultrasound waves after the ultrasound waves reach the surface to be detected, and the processing unit is used for calculating the location of the surface to be detected according to the feedback signals. The surface detection device can be used for precisely detecting shock insulators and monitoring residual quantity of liquid crystal.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a surface detection device for surface detection of devices on a display panel. 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. [0003] In the manufacturing process of liquid crystal displays, it is often necessary to measure the surface of objects in the process to ensure the accuracy of the manufacturing process. [0004] For example, in a liquid crystal display, a spacer is provided between the array ...

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Application Information

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IPC IPC(8): G02F1/13G01B17/00G01B17/06
Inventor 井杨坤林晓华车晓盼孙国防
Owner HEFEI BOE OPTOELECTRONICS TECH
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