Display screen splicing assembly with looseness detection function and assembly detection method
An assembly detection and display technology, which is applied to static indicators, instruments, etc., can solve the problems of operator visual fatigue, low work efficiency, and long time consumption, and achieve the effects of reducing production costs, saving labor, and fast detection speed
Pending Publication Date: 2022-04-12
CREATELED ELECTRONICS
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Problems solved by technology
This method needs to display specific symbols one by one, which is likely to cause visual fatigue of the operator and cause misjudgment
[0006] The detection method of the prior art is inconvenient to carry out simultaneous detection of dead pixels and splicing conditions, and is directly observed by human eyes, which generally has the disadvantages of long time-consuming, low work efficiency, and high misjudgment rate
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[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0038] see Figure 1-2 , a display screen detection method, comprising the following steps:
[0039] S1 sets a photoresistor array so that the photoresistors correspond to the character segments of the display screen; all character segments are extinguished;
[0040] S2 lights up the i-th character segment, and measures the resistance value of the i-th character segment corresponding to the photoresistor, denoted as A;
[0041] S3 compares the resistance val...
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The invention relates to the technical field of display screen detection, and discloses a display screen splicing assembly with looseness detection, an assembly detection method and a display screen detection method, and the method comprises the following steps: S1, setting a photoresistor array, and enabling photoresistors to correspond to character fields of a display screen; all the character fields are extinguished; s2, lightening the ith character field, measuring the resistance value of the photosensitive resistor corresponding to the ith character field, and recording the resistance value as A; s3, comparing the resistance value A with an empirical value A1; if A is greater than or equal to A1, entering the following steps, otherwise, rejecting defective products; s4, turning off the ith character field, turning on the Bnth character field adjacent to the ith character field, measuring the resistance value of the photosensitive resistor corresponding to the ith character field, and recording the resistance value as Abn; s5, comparing the difference value A-Abn with the empirical value A2; if A-Abn is greater than or equal to A2, entering the following steps, otherwise, determining that a defective product is obtained, and removing the defective product; and S6, if the ith character field has adjacent character fields, returning to the step S4 until all adjacent character fields of the ith character field are detected.
Description
technical field [0001] The invention relates to the technical field of display screen detection, in particular to a display splicing assembly with loose detection and an assembly detection method. Background technique [0002] In many electrical products, various display screens are widely used to display various information such as the working status and setting parameters of the product. Commonly used display screens include light-emitting diode (LED) display screens and fluorescent display screens (VFD). The basic working principle is to combine various characters, symbols and patterns by lighting up the character segments that make up the display screen. In production, it is necessary to inspect the display screen in order to eliminate false welding, continuous welding and dead segments, etc., to ensure that the displayed characters are correct and complete. [0003] In the prior art, the display screen is usually detected by the following two methods: [0004] 1. Conn...
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IPC IPC(8): G09G3/00G09G3/32
Inventor 成卓罗立坚曹宏卫袁家兴白燕林
Owner CREATELED ELECTRONICS