Measuring device and method for measuring absorption axis of polarizer
A polarizer and absorption axis technology, applied in optics, nonlinear optics, testing optical properties, etc., can solve problems affecting the display of liquid crystal panels
Active Publication Date: 2021-06-01
HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
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[0004] When the absorption axis of the polarizer is shifted, that is, when the absorption axis of the upper and lower polarizers is not vertical, light leakage will occur in the dark state of the liquid crystal panel, and the contrast of the liquid crystal panel is the ratio of the bright state / dark state, and the light leakage in the dark state affects the contrast. Very large, thus affecting the display of the LCD panel
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[0013] Certain words are used to refer to specific components in the description and claims, and those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0014] figure 1 It is a structural schematic diagram of a measuring device for the absorption axis of a polarizer according to an embodiment of the present invention. like figure 1 As shown, the measurement device includes an incident light 10 , a polarizer 11 , a sample carrier 12 and a test module 13 .
[0015] The sample stage 12 is used to carry a polarizer, wherein the polarizer covers the light transmission hole of the sample stage 12 , and the incident light 10 pas...
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The invention discloses a measuring device and a measuring method for the absorption axis of a polarizer. The measuring device includes incident light, polarizers, a sample carrier and a test module; the sample carrier is used to carry a polarizer, wherein the polarizer covers the light transmission hole of the sample carrier, and the incident light is polarized by the polarizer and passes through the The light hole and the polarizer; the test module is used to obtain the first absorption axis angle value corresponding to the minimum value of the light intensity of the incident light passing through the light hole and the polarizer and obtain the corresponding absorption axis compensation value of the polarizer, and according to The first absorption axis angle value and the absorption axis compensation value obtain the second absorption axis angle value. Through the above method, the present invention does not need to configure the polarization direction of the incident light and the structure of placing or biasing the polarizer in the sample carrier, such as the direction of the slot, but only needs to maintain the polarizer and the structure of placing or biasing the polarizer in the sample carrier, such as The absorption axis of the polarizer can be measured by keeping the angle of the reference edge of the hardware such as the card slot unchanged, which is simple and easy to implement.
Description
technical field [0001] The invention relates to the field of liquid crystal display, in particular to a measuring device and a measuring method for the absorption axis of a polarizer. Background technique [0002] Currently commonly used liquid crystal panel display modes mainly include TN mode, VA mode, and IPS mode. In order to realize different display modes, it is necessary to apply different polarizers to the polarizers in the liquid crystal panel. [0003] Take VA mode as an example: VA display is a vertically aligned normally black mode, and the absorption axes of the polarizers on the upper and lower substrates are vertically attached. Among them, the polarizer absorbs light in the direction perpendicular to the polarization axis, and only allows the light in the direction of the polarization axis to pass through, converting natural light into linearly polarized light. [0004] When the absorption axis of the polarizer is shifted, that is, when the absorption axis o...
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IPC IPC(8): G02F1/13G01M11/02
CPCG01M11/02G02F1/1309
Inventor 海博
Owner HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD