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Liquid crystal screen detection method

A detection method and liquid crystal screen technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as inaccurate detection results and inability to judge all problems, and achieve the effects of improving detection efficiency, fast judgment speed, and accurate judgment

Active Publication Date: 2015-09-30
XUJI GRP +2
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Problems solved by technology

[0006] The purpose of the present invention is to provide a liquid crystal screen detection method to solve the problem that the existing technology cannot judge all problems, resulting in inaccurate detection results

Method used

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] A method for detecting an electric meter liquid crystal screen: including: storing a standard image, the standard image is determined in a pre-experiment, in the full-screen image, the first screen image and the second screen image under no error welding and various error welding situations At least two types; the image output by all pins is defined as a full-screen image, the image output by only a part of the pins is defined as the first screen image, and the image output by only the rest of the pins is defined as the second screen image.

[0020] For the liquid crystal screen to be detected, obtain the image to be inspected, the image to be inspected is at least two images corresponding to the above-mentioned standard image; the image to be inspected is compared with the standard image, and when each type of image behaves the same, the welding corres...

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Abstract

The invention relates to a liquid crystal screen detection method. The liquid crystal screen detection method comprises the steps that standard images are stored, wherein the standard images are at least two of a full screen image, a first screen image and a second screen image determined in a beforehand experiment under the condition that no error welding exists; the image output by all pins is defined as the full screen image, the image output by only part of the pins is defined as the first screen image and the image output by only the rest part of the pins is defined as the second screen image; for a liquid crystal screen to be detected, images to be detected are obtained, and the images to be detected are at least two kinds of images corresponding to the standard images; the images to be detected are subjected to comparison with the standard images, if each kind of the corresponding image shows the same, the liquid crystal screen is free of a welding error, and if not, the liquid crystal screen has the welding error. By means of the liquid crystal screen detection method, the quality of the liquid crystal screen can be judged accurately, and the detection efficiency is greatly improved.

Description

technical field [0001] The invention relates to a method for detecting a liquid crystal screen. Background technique [0002] In the process of meter assembly and meter automation line design, it is inevitable that there will be virtual welding, missing soldering, tin connection and other phenomena during the welding process of the meter circuit board. Occasionally, the status of missing display, virtual display, broken display or white screen is displayed. In order not to transfer to the next station and affect the overall quality of the meter, LCD screen inspection has become an essential process. [0003] At present, the methods of liquid crystal screen detection mainly include manual detection and machine detection. [0004] Most manufacturers in the domestic electric meter industry are still using manual visual inspection of the liquid crystal display status, and when manually inspecting the LCD screen, it is a one-time inspection to check whether all the displays of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
CPCG02F1/1309
Inventor 黄明山李如意马永武刘永光易鑫何祖龙张运山王静
Owner XUJI GRP
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