WO2019090518A1

WO2019090518A1 - Polarizer unit for flexible module, flexible module, and mobile electronic device

Info

Publication number: WO2019090518A1
Application number: PCT/CN2017/109946
Authority: WO
Inventors: 李海涛
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2017-11-08
Filing date: 2017-11-08
Publication date: 2019-05-16
Also published as: CN111279298A

Abstract

A polarizer unit (10) for a flexible module, the flexible module, and a mobile electronic device. The polarizer unit (10) comprises a polarizer (11) and an ink pattern layer (12) provided on the polarizer (11); the ink pattern layer (12) is positioned on the periphery of one surface of the polarizer (11); a light-transmitting region (13) is formed in the middle part of the surface of an inner ring of the ink pattern layer (12). The polarizer unit (10), by means of the ink pattern layer (12) thereon, has functions of the polarizer and a cover plate, and can replace the polarizer (11) and the cover plate in the flexible module. According to the flexible module using the polarizer unit (10), the configuration of an original cover plate is cancelled, so that the thickness of the flexible module is reduced, the process flow is optimized, and the number of processes is reduced.

Description

Polarizer unit, flexible module and mobile electronic device for flexible module

[0001] The present invention relates to the field of flexible module technologies, and in particular, to a polarizer unit, a flexible module, and a mobile electronic device for a flexible module.

Background technique

[0002] With the development of technology, some electronic devices realize their own bendable effects (such as foldable mobile phones) by designing bendable flexible modules to meet the needs of some users. Current stacks of flexible modules include sequentially stacked organic light emitting diodes (OLEDs), polarizers, optically clear films (OCAs), touch panels (TP), optically clear films (OCAs), and cover sheets. Among them, the cover plate only protects, usually glass or PET film. Although the glass and PET film can be made thin and can satisfy the folding effect, there is still a certain limit to the degree of thinness, and there is still a certain thickness in itself, which still affects the bending effect of the flexible module stack.

[0003] In order to achieve a better bending effect, the flexible module needs to be as thin as possible. The existing flexible modules are all considered to be light and thin from the laminated material, such as using a thinner PET printing ink as the cover of the flexible module, and do not consider the improvement in the laminated structure, so in terms of thinning The effect is not obvious. In addition, the stacking structure of the existing flexible modules increases the number of bonding, and the optical effects and laminated stress design are limited.

technical problem

[0004] The technical problem to be solved by the present invention is to provide a polarizer unit for a flexible module that realizes thickness reduction of a flexible module, a flexible module having the same, and a movement of the flexible module Electronic equipment.

Problem solution

Technical solution

[0005] The technical solution adopted by the present invention to solve the technical problem thereof is: providing a polarizer unit for a flexible module, the polarizer unit including a polarizer and an ink pattern layer disposed on the polarizer; The pattern layer has a frame shape on a periphery of a surface of the polarizer; and is located in the inner circle of the ink pattern layer The intermediate portion of the surface forms a light transmissive region.

The present invention also provides a flexible module including a polarizer unit; the polarizer unit includes a polarizer and an ink pattern layer disposed on the polarizer; the ink pattern layer has a frame shape, and is located at the a peripheral portion of a surface of the polarizer; a middle portion of the surface of the inner circumference of the ink pattern layer forms a light transmitting region

The present invention also provides a mobile electronic device including the above flexible module.

Advantageous effects of the invention

Beneficial effect

[0008] The polarizer unit of the present invention can replace the polarizer and the cover plate in the flexible module by providing an ink pattern layer thereon, having a polarizer function and a cover plate. By using the flexible module of the polarizer unit, the setting of the original cover plate is reduced, thereby realizing the thinning of the thickness of the flexible module, achieving a better bending effect, optimizing the process flow and reducing the number of processes.

Brief description of the drawing

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a perspective view showing a three-dimensional structure of a polarizer unit according to an embodiment of the present invention;

2 is a schematic cross-sectional structural view of a polarizer in the polarizer unit shown in FIG. 1;

3 is a schematic cross-sectional view of a flexible module according to an embodiment of the invention.

Embodiments of the invention

DETAILED DESCRIPTION OF THE INVENTION [0013] In order to more clearly understand the technical features, objects and advantages of the present invention, the embodiments of the present invention are described in detail with reference to the accompanying drawings.

[0014] As shown in FIG. 1, a polarizer unit 10 according to an embodiment of the present invention is used for a flexible module. The polarizer unit 1

0 may include a polarizer 11 and an ink pattern layer 12 disposed on the polarizer 11. Ink pattern layer 12 is frame-shaped

Located on the periphery of a surface of the polarizer 11; the intermediate portion of the surface of the inner ring of the ink pattern layer 12 forms a light transmitting region 13.

[0015] In the flexible module, the ink pattern layer 12 of the polarizer unit 10 corresponds to the frame portion of the flexible module, thereby shielding The function of blocking the line, preventing the light transmission of the organic light emitting diode, etc.; the width of the ink pattern layer 12 can be flexibly designed according to the product, and meets the screen occupation ratio of 70-90%. The light transmissive area 13 of the polarizer unit 10 corresponds to the display area of the flexible module, and functions as a polarizer itself for filtering light. It can be seen from the foregoing that the polarizer unit 10 can be used as a polarizer and a cover plate in the flexible module, and has the functions of both, so that the original polarizer and the cover plate of the flexible module can be replaced, and the flexible module can be reduced. The structural layer, which in turn reduces the thickness of the flexible module, facilitates thinning of the flexible module.

[0016] As shown in FIG. 2, the polarizer 11 is a multi-layer material structure, and generally includes a PVA layer (polyvinyl alcohol layer) 111 and a TAC layer (triacetyl cellulose ester layer) respectively disposed on opposite sides of the PVA layer 111. 112, which meets the RA conditions of the flexible module in terms of high temperature resistance and heat and humidity resistance; RA conditions: high temperature and high humidity 60 ° C * 90% RH * 50 OHR (HR: small 吋), hot and cold cycle -40 ° C - 85 °C*500HR, high temperature storage 85°C*500HR, low temperature storage -40°C*500HR.

[0017] The thickness of the ink pattern layer 12 on the polarizer 11 may be 5-50 μm, and the manner of formation is not limited, and may be formed on the surface of the polarizer 11 by, for example, screen printing, inkjet printing, or exposure development. The operation of the mode can be realized by the prior art.

Further, the manner in which the ink pattern layer 12 is cured on the polarizer 11 is not limited, and may be fixed on the surface of the polarizer 11 by, for example, low temperature curing, U V curing (ultraviolet curing) or moisture curing. Among them, the temperature of low temperature curing is less than or equal to 80 °C.

As shown in FIG. 3, a flexible module according to an embodiment of the present invention includes the above-described polarizer unit 10. The polarizer unit 10 is disposed at the uppermost position in the flexible module, and the same function as the polarizer also functions as a cover plate, so that the flexible module does not need to be additionally provided with a cover plate, thereby reducing the thickness of the flexible module. Further thinning the flexible module to achieve a better bending effect.

[0020] The flexible module further includes an organic light emitting diode (OLED) 20 and a touch panel 30.

[0021] The touch panel 30 is disposed on the organic light emitting diode 20, and the polarizer unit 10 is disposed on the touch panel 30 with the ink pattern layer 12 facing the touch panel 30, so that the polarizer unit 10 and the organic light emitting diode 20 respectively Located on opposite sides of the touchpad 30. In the flexible module, since the polarizer unit 10 is disposed at the top, it also forms a cover of the flexible module, and has the functions of a polarizer and a cover, which saves the original cover and reduces the original cover. The thickness of the laminate makes the thickness of the flexible module thinner and the bending effect is better.

[0022] Further, the flexible module further includes a first light disposed between the organic light emitting diode 20 and the touch panel 30. The adhesive layer 41 is bonded and fixed by the first optical adhesive layer, and the optical performance of the organic light emitting diode 20 and the touch panel 30 are not affected.

[0023] The flexible module further includes a second optical adhesive layer 42 disposed between the touch panel 30 and the polarizer unit 10. The second optical adhesive layer 42 bonds and fixes the touch panel 30 and the polarizer unit 10.

[0024] Further, the flexible module further includes a flexible circuit board 50 for connecting the flexible module to an external circuit board or the like. In this embodiment, the flexible circuit board 50 includes two, and the organic light emitting diode 20 and the touch panel 30 are respectively connected. Specifically, the two flexible wiring boards 50 are electrically connected to the wiring area of the organic light emitting diode 20 and the wiring area of the touch panel 30, respectively.

[0025] In addition, the flexible module further includes a backing plate 60. The back plate 60 is disposed on a side of the organic light emitting diode 20 facing away from the touch panel 30 to provide back protection. In the flexible module, the polarizer unit 10 and the back plate 60 are respectively located on opposite sides of the flexible module.

It can be understood that the backing plate 60 is not limited to a plate-like structure, and may also be a film-like structure.

[0027] The flexible module is fabricated, and the organic light emitting diode 20, the touch panel 30, and the polarizer unit 10 are sequentially stacked and bonded by optical glue to form an integrated laminated structure; the backplane 60 is mounted and the flexible circuit is connected. Board 5

0 can form the flexible module of the present invention.

[0028] As can be seen from the above, in the process, since the bonding of the cover is reduced, the number of process fittings is reduced as a whole.

, optimize processes and increase efficiency.

[0029] The mobile electronic device of the present invention includes the above flexible module. Thickness reduction due to flexible modules

With better bending effect, the overall thickness of the mobile electronic device is also reduced in thickness, and the bending effect is better in use, which better meets the user's use requirements.

[0030] Mobile electronic devices include, but are not limited to, devices such as cell phones, tablets, and PDAs.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to others. The related technical fields are all included in the scope of patent protection of the present invention.

Claims

Claim

[Attach 1] A polarizer unit for a flexible module, characterized in that the polarizer unit (10)

a polarizing plate (11) and an ink pattern layer disposed on the polarizer (11)

12); the ink pattern layer (12) is located on a periphery of a surface of the polarizer (11); a middle portion of the surface of the inner layer of the ink pattern layer (12) forms a light-transmitting region (

13). Type claim 1 here.

[Claim 2] A flexible module, comprising: a polarizer unit (10); the polarizer unit (10) comprising a polarizer (11) and an ink disposed on the polarizer (11) a pattern layer (12); the ink pattern layer (12) has a frame shape on a periphery of a surface of the polarizer (11); and a middle portion of the surface of the inner circumference of the ink pattern layer (12) is formed Light transmission area (13).

[Claim 3] The flexible module according to claim 2, wherein the ink pattern layer (12)

It is formed on the surface of the polarizer (11) by screen printing, inkjet printing or exposure development.

The flexible module according to claim 2, wherein the flexible module further comprises an organic light emitting diode (20), and a touch panel disposed on the organic light emitting diode (20) ( The polarizer unit (10) is disposed on the touch panel (30) with the ink pattern layer (12) facing the touch panel (30), and further forms a cover of the flexible module. board.

The flexible module of claim 4, further comprising: disposed between the organic light emitting diode (20) and the touch panel (30), Bonding the fixed first optical adhesive layer (41).

The flexible module according to claim 5, wherein the flexible module further comprises: disposed between the touch panel (30) and the polarizer unit (10), and both Adhesively fixed second optical adhesive layer (42).

The flexible module according to claim 5, wherein the flexible module further comprises a flexible circuit board respectively connecting the organic light emitting diode (20) and the touch panel (30) (

[Claim 8] The flexible module according to claim 5, wherein the flexible module further comprises a backplane (60); the backplane (60) is disposed on the organic light emitting diode (20) It faces away from the side of the touch panel (30).

[Claim 9] A mobile electronic device, comprising the flexible module of any one of claims 2-8.

[Claim 10] The mobile electronic device according to claim 9, wherein the mobile electronic device is a mobile phone, a tablet computer, or a PDA.