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Polarizer and its manufacturing process

A manufacturing process and technology of polarizers, applied in the optical field, can solve the problems of laminating bubbles, deformation of filling places, etc., and achieve the effect of good light penetration

Active Publication Date: 2020-06-05
TRULY OPTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the full-screen mobile phones on the market need to carry out special-shaped punching on the polarizer to form through holes. This late-stage special-shaped punching will cause many unnecessary technical difficulties in the bonding process, such as filling problems at the punching part, bonding Bubble problem, filling deformation problem

Method used

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  • Polarizer and its manufacturing process
  • Polarizer and its manufacturing process

Examples

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Embodiment 1

[0032] See Figure 1~Figure 2 . A polarizer 10 provided by an embodiment of the present invention is applied to a full-screen display panel. The polarizer 10 includes three film layers stacked in sequence: a lower TAC film 13 , a PVA film 12 , and an upper TAC film 11 . The PVA film 12 is provided with a through hole 121 , and the transparent optical glue 14 is filled in the through hole 121 .

[0033] The polarizer in the polarizer 10 is a PVA (polyvinyl alcohol) film, but PVA is easily hydrolyzed. In order to protect the physical properties of the polarizer 10, a layer of TAC film with high light transmittance and good water resistance is compounded on both sides of the PVA film 12 for protection. TAC (Triacetyl Cellulose) is the transmittance One of the highest polymer materials, used as a protective film for the PVA film 12.

[0034] In this embodiment, the present invention forms a through hole 121 between the lower TAC film 13 and the upper TAC film 11 when the polar...

Embodiment 2

[0039] See Figure 3~Figure 4 A manufacturing process of a polarizer 10 provided by an embodiment of the present invention includes the following steps:

[0040] (1) On the PVA film 12, use the press knife 205 to press down and punch out the required size of the through hole 121;

[0041] (2) The first coating mechanism 206 attaches the lower TAC film 13 to the PVA film 12 with the through hole 121 cut;

[0042] (3) After attaching the lower TAC film 13, use the dispensing mechanism 207 to dispense glue at the through hole 121. The dispensing method is circular spiral track dispensing from outside to inside (from the outer edge of the through hole 121 to the center of the through hole 121). ;

[0043] (4) The second coating mechanism 209 attaches the upper TAC film 11 to the PVA film 12;

[0044] By setting the dispensing method as a circular spiral track dispensing, it is easy to control the uniformity of the glue thickness and improve the leveling efficiency of the glue; ...

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Abstract

The invention discloses a polaroid applied to a full-screen display panel. The polaroid comprises three films, namely, a lower-layer TAC film, a PVA film and an upper-layer TAC film, which are overlapped in turn; a through hole is formed on the PVA film; a transparent optical cement is filled in the through hole. The invention discloses a manufacturing technology of the polaroid. The manufacturingtechnology comprises the following steps: (1) using a pressing broach for pressing and punching the through hole in required size on the PVA film; (2) attaching the lower-layer TAC film to the PVA film with the punched through hole; (3) dispensing glue on the through hole in the manner of dispensing glue along annular spiral track points from outer to inner after attaching the lower-layer TAC film; (4) attaching the upper-layer TAC film to the PVA film. In the polaroid disclosed by the invention, a light-transmitting area is formed in the area corresponding to the through hole and a camera under the full-screen display panel; later irregular punching for the polaroid is avoided; when the polaroid is glued with a display panel and a cover plate in later period, the traditional technology can be adopted for directly gluing.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a polarizer and a manufacturing process thereof. Background technique [0002] Once the mobile phone with the concept of full screen is launched, it has been widely favored. Full screen technology literally means that the front of electronic products such as mobile phones are all screens, and the display interface is completely covered by the screen. [0003] The full-screen mobile phone sets the camera below the display panel. In order to make the camera work normally, a non-display light-permeable area is set at the position corresponding to the camera on the display panel, and a polarizer above the display panel is set at the position corresponding to the camera. There are through holes. The light can enter the camera through the through hole of the polarizer and the light-transmitting area of ​​the display panel. The display panel is attached to the polarizer, and the pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30B32B3/08B32B9/00B32B9/04B32B37/12B32B38/00B32B38/04G02B5/30
Inventor 蒲大杭吴德生
Owner TRULY OPTO ELECTRONICS
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