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Adhering method and liquid crystal display screen adhered by adhering method

A liquid crystal display and liquid crystal box technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of air bubbles, air bubbles cannot be discharged by rubber rollers, etc., to eliminate air bubbles, reduce rework rate, and improve production efficiency Effect

Active Publication Date: 2018-07-27
VARITRONIX HEYUAN DISPLAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the mainstream development trend of high-end smart phone and tablet computer display bonding is full bonding technology. In the actual production process, there are often closed gas protrusions in the display area or edge after bonding; and the reason for the generation of air bubbles As follows: 1) Material reason: The temperature and humidity changed during the storage of OCA optical adhesive, which caused some areas in the OCA adhesive layer to solidify in advance, and bubbles will be generated in the corresponding area when laminating; 2) The reason for the separation of the protective film: In practice During the production process, some OCAs will separate the OCA adhesive layer along with the protective film due to the uneven separation tension during the separation process of the protective film. Bubbles will be formed; 3) The reason for the lamination process: some OCAs are warped during the lamination process, and they will fall off before the lamination process is completed, so that the air bubbles in the remaining OCA adhesive layer cannot be rolled out by the rubber roller

Method used

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  • Adhering method and liquid crystal display screen adhered by adhering method
  • Adhering method and liquid crystal display screen adhered by adhering method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 As shown, a fitting method, including

[0028] S1: Optical adhesive 10 is adhered to the lower surface of the polarizer, and the bonding environment is controlled to be in a dust-free state, and the ambient temperature is controlled between 18° and 26°; in this embodiment, the ambient temperature is controlled at 22°, Under this environment, the storage effect of the optical glue 10 is the best; the optical glue 10 is set as a solid OCA optical glue;

[0029] S2: Control the downward pressure of the rubber roller 12, and its downward pressure is controlled between 0.1 and 0.2 MPa; in this embodiment, the pressure of the rubber roller 12 is controlled to be 0.1 MPa, and the downward pressure of the rubber roller 12 is relatively small to ensure rolling. There will be no indentation on the polarizer during the process; when the pressure is small, there is a certain gap between the polarizer and the glass substrate, and there will be air bubbles;

[0030] S...

Embodiment 2

[0036] like figure 2 As shown, a bonded liquid crystal display screen, the liquid crystal display screen bonded by the bonding method in Embodiment 1, includes a surface polarizer 1, a liquid crystal cell 2, a bottom polarizer 8 and a backlight plate 9, the surface The polarizer 1 is arranged above the liquid crystal cell 2, the backlight plate 9 is arranged below the liquid crystal cell 2, and a bottom polarizer 8 is arranged between the backlight plate 9 and the liquid crystal cell 2; the liquid crystal cell 2 includes a surface glass substrate 3 , a liquid crystal layer 5 and a bottom glass substrate 7; the surface polarizer 1 is attached above the surface glass substrate 3 by the bonding method, and a bottom is attached on the lower surface of the bottom glass substrate 7 by the bonding method. Polarizer 8: The lamination method in Example 1 can reduce the air bubbles between the polarizer and the glass substrate. At the same time, OCA optical glue and OCR optical glue ar...

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Abstract

The invention relates to an adhering method. The adhering method includes the steps of S1, adhering an optical adhesive to the lower surface of a polarizer, controlling the adhering environment to bein a dust-free state at the same time, and controlling environment temperature to be 18-26 DEG C; S2, controlling a rubber roller to press down at the pressure of 0.1-0.2MPa; S3, allowing an injectorarranged at the pressing-down position of the rubber roller to synchronously move along with the rubber roller; S4, allowing the rubber roller to move horizontally to adhere the polarizer with the optical adhesive to the glass substrate of a liquid crystal box; during the horizontal movement of the rubber roller, using the injector to inject an adhesive aid to two sides of the polarizer and the glass substrate, wherein the adhesive aid infiltrates into bubbles between the polarizer and the glass substrate; S5, irradiating with an ultraviolet lamp to solidify the optical adhesive and adhesive aid between the polarizer and the glass substrate. By the adhering method, the probability of bubble generation during adhering is lowered, and adhering quality is increased.

Description

technical field [0001] The invention relates to the field of liquid crystal display screens, in particular to a bonding method of display screens and a bonded liquid crystal display screen. Background technique [0002] At present, the mainstream development trend of high-end smart phone and tablet computer display bonding is full bonding technology. In the actual production process, there are often closed gas protrusions in the display area or edge after bonding; and the reason for the generation of air bubbles As follows: 1) Material reason: The temperature and humidity changed during the storage of OCA optical adhesive, which caused some areas in the OCA adhesive layer to solidify in advance, and bubbles will be generated in the corresponding area when laminating; 2) The reason for the separation of the protective film: In practice During the production process, some OCAs will separate the OCA adhesive layer along with the protective film due to the uneven separation tens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/1335
CPCG02F1/1303G02F1/133528
Inventor 陈耀文王艳卿
Owner VARITRONIX HEYUAN DISPLAY TECH
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