Method and a device for identifying defects of a color electrowetting display unit
An electrowetting display and defect identification technology, applied in image data processing, instrumentation, computing, etc., can solve the problems of poor consistency, long display unit defect time, low efficiency, etc., and achieve the effect of improving product quality and yield
Active Publication Date: 2019-04-19
FUZHOU UNIVERSITY
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[0005] In view of this, the purpose of the present invention is to propose a color electrowetting display unit defect identification method and its device, aiming to solve the problems of long time, low efficiency and easy detection results of manual detection and classification of electrowetting display unit defects. Influenced by subjective factors and poor consistency
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0030] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0031] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...
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The invention relates to a method and a device for identifying defects of a color electrowetting display unit. The method comprises the following steps of: firstly, performing histogram equalization and geometric correction on an image acquired by a microscope to finish preprocessing of the image of the electrowetting display unit; Segmenting the preprocessed image by adopting an improved K-meansclustering algorithm, carrying out dynamic judgment, and recording color characteristics of three primary colors of the preprocessed image; Secondly, extracting geometric features of the binary imageobtained after segmentation as classification main features, extracting texture features of the binary image as classification auxiliary correction features, and training and classifying the extractedthree types of features by adopting a learning vector quantization neural network; And finally, framing out defective electrowetting display units by using a rectangular frame according to a classification result, and determining the gravity center coordinate of each defect unit through a connected domain algorithm. Defective display units of the electrowetting display can be detected and classified, and meanwhile information such as defect layers, defect types and coordinates of the display units can be obtained.
Description
technical field [0001] The invention relates to the field of electrowetting display, in particular to a defect identification method and device for a color electrowetting display unit. Background technique [0002] Electrowetting Display (EWD) was published in Nature in 2003, and related research has been developed in the past decade. Electrowetting display technology has fast response and can realize dynamic display; does not require backlight module, has low power consumption and low mass production cost; displays by reflecting ambient light, high brightness, high contrast and wide viewing angle; does not require color filter The light sheet can achieve many advantages such as colorization, and it is a display technology with great potential in the future. [0003] The electrowetting phenomenon refers to the phenomenon that the wettability of the droplet on the substrate is changed by changing the voltage between the droplet and the insulating substrate, that is, the cont...
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Login to View More IPC IPC(8): G06T7/00G06T7/90
CPCG06T7/0004G06T7/90G06T2207/30121
Inventor 林志贤纪艳玲林珊玲唐谦吕珊红郭太良张永爱周雄图
Owner FUZHOU UNIVERSITY