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Method for detecting visual angle deviation direction of LCD full-visual-angle VA

A detection method and full viewing angle technology, applied in nonlinear optics, instruments, optics, etc., can solve the problem of inability to identify the deviation direction and misalignment of LCD glass, and achieve the effect of facilitating product tracking and error correction

Pending Publication Date: 2021-04-06
株洲晶彩电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent is applicable to the detection of LCD semi-finished products, testing the continuity of the LCD circuit, and its graphic detection is also the detection of the interior of the LCD display. This method cannot identify the alignment deviation direction and dislocation of the LCD glass of the viewing angle.

Method used

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  • Method for detecting visual angle deviation direction of LCD full-visual-angle VA

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Embodiment 1

[0032] The method for detecting the viewing angle deviation direction of the LCD full viewing angle VA disclosed in this embodiment includes the following steps:

[0033] S1. Place the LCD glass to be tested up and down on the fixing device of the detection frame. The fixing device in this example is figure 1 The electrical testing device 10 in the electrical testing device 10 is in a connected state; at the same time, the LCD backlight at the bottom of the fixing frame is lit. Specifically, the ITO circuit of the upper and lower LCD glass to be tested is tested by an electrical testing device. The electrical testing device 10 includes a tester and a circuit board electrically connected to the tester, and the LCD glass is mounted on the circuit board. More specifically, the electrical testing device 10 adopts a full-view LCD precision detection device, including an electrical testing device positioning board 13, a video magnifying glass 11, a display 12, and an automatic detec...

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Abstract

The invention relates to the technical field of LCD testing, and in particular, relates to a method for detecting the visual angle deviation direction of an LCD full-visual-angle VA. According to the method for detecting the visual angle deviation direction of the LCD full-visual-angle VA, a video magnifier suitable for the product is selected according to the characteristics of the full-visual-angle LCD. The focal length is automatically and finely adjusted through an automatic detection judgment program. When the definition is optimal, a standard pattern at a fixed position is collected; the automatic detection program can automatically detect the nesting deviation direction and the deviation value of an ITO circuit, combined up and down, of the LCD, display the detected deviation value and judge whether the visual angle deviation value of the full-visual-angle product meets the requirement or not. In addition, the program can also clearly detect the defects of LCD graphic font convex-concave badness, graphic font thickness deformation badness, short circuit, missing scratching badness and the like. The full-visual-angle LCD precision detection device is high in detection precision, effectively improves the detection efficiency, and is accurate and effective in detection.

Description

technical field [0001] The present invention relates to the technical field of LCD testing, and more specifically, to a method for detecting the deviation direction of the viewing angle of LCD full viewing angle VA. Background technique [0002] LCD liquid crystal display is a common display screen, and it is also one of the most widely used display screens in the display industry. It is characterized by good display effect, simple structure, low energy consumption, high brightness, and wide temperature range. Many industry terminal products use LCD liquid crystal display as the display terminal, which can only detect the short circuit of the unboxed single glass. [0003] Existing LCD inspections generally use electrical testing devices to judge by visually observing their images. This method is not only inefficient, but also has higher requirements on the eyesight of practitioners. Some projector products cannot detect defects such as poor convexity and concave of LCD gr...

Claims

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Application Information

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IPC IPC(8): G02F1/13
CPCG02F1/1309
Inventor 尹泽轩吴志新佘光全
Owner 株洲晶彩电子科技有限公司
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