CN212061127U

CN212061127U - Structure of explosion-proof collapsible AMOLED display screen

Info

Publication number: CN212061127U
Application number: CN202020822520.1U
Authority: CN
Inventors: 赖耀升; 江建志
Original assignee: Aeneq Co ltd
Current assignee: Anhui Fansheng Display Technology Co.,Ltd.
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-12-01
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a structure of explosion-proof collapsible AMOLED display screen includes PI base plate, circuit drive layer, OLED layer from bottom to top in proper order, and OLED layer top is equipped with multilayer film packaging layer, the laminating of multilayer film packaging layer top has ultra-thin glass layer, ultra-thin glass layer includes the rupture membrane on ultra-thin glass and ultra-thin glass surface, and the laminating of ultra-thin glass layer top has the circle polaroid, and the laminating of circle polaroid top has the PET layer of taking touch sensor, and touch sensor is located the PET below, PET layer top is provided with sclerosis antifouling membrane, the utility model discloses make whole AMOLED display screen collapsible do not have the crease when buckling, its is whole thinner, does benefit to and buckles, utilizes the rupture membrane to effectively protect ultra-thin glass simultaneously, realizes explosion-proof function.

Description

Structure of explosion-proof collapsible AMOLED display screen

Technical Field

The utility model belongs to OLED display screen field, more specifically the structure that relates to an explosion-proof collapsible AMOLED display screen that says so.

Background

Since the year 2019, companies including the beijing east have successively exposed foldable self-luminous flexible screens that are completely self-developed. Companies such as samsung, huayao, etc. have also made related products based on network messages. Unicom even in officers means "fold screen handset not far away! "

The folding screen mobile phones released in the market at present have many problems, for example, various problems occur on the screen of a tester just released by a three-star Galaxy Fold.

Besides that the flexible OLED display panel of the folding screen mobile phone is foldable, in the whole mobile phone display screen, other functional layers such as a polarizer, a touch screen and the like are required between the glass cover plate and the panel layer, and the thicker the thickness of all the functional layers is, the more the functional layers are not beneficial to folding. At present, two structures of a folding OLED display panel are available in the market, one is a three-star method, a circuit driver (LTPS-TFT) is plated on a PI substrate, an OLED layer (RGB-OLED) is plated, a multilayer film package (TFE) is further adopted, a touch sensor (TP) is further adopted, an OCA (optical clear adhesive) is further adopted to paste a circular polarizer, an OCA is further adopted to paste a plastic Cover Plate (CPI), a hardening film (Hard Coat) is plated on the surface of the OCA, a PET (polyethylene terephthalate) is further pasted on the surface of the OCA, and a hardening and anti-fouling film is plated on; the second one has more layers than the first one, and comprises a PI substrate coated with a circuit driver (LTPS-TFT), an OLED layer (RGB-OLED), a multilayer film package (TFE), an OCA-bonded PET, a touch sensor (TP) manufactured thereon, an OCA-bonded circular polarizer, an OCA-bonded plastic Cover Plate (CPI), a hardening film coated thereon, an OCA-bonded PET, and a hardening antifouling film coated thereon.

The main disadvantage of the first three-star solution is that the CPI, which is a protective layer for the OLED layer, plus the cured film, although it can be bent, will create creases after bending, which is very disadvantageous for folding the screen. The second solution, with the addition of one layer of PET and the need for more OCA, resulted in a considerable increase in thickness and also in the use of CPI, which resulted in creasing.

The applicant previously filed application 202010098015.1, which discloses a structure and a manufacturing method of a foldable AMOLED display screen, wherein the utility model discloses a touch sensing layer is manufactured on ultra-thin glass, and in the experimental process, the impact resistance of the ultra-thin glass is found to be slightly weak.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a make whole AMOLED display screen collapsible when buckling do not have the crease, it is whole thinner, does benefit to buckle, utilizes the rupture membrane to continue effective protection to ultra-thin glass simultaneously, realizes explosion-proof function.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a structure of explosion-proof collapsible AMOLED display screen, includes PI base plate, circuit drive layer, OLED layer from bottom to top in proper order, and OLED layer top is equipped with multilayer film packaging layer, the laminating of multilayer film packaging layer top has ultra-thin glass layer, ultra-thin glass layer includes the rupture membrane on ultra-thin glass and ultra-thin glass surface, and the laminating of ultra-thin glass layer top has the circle polaroid, and the laminating has the PET layer of taking touch sensor above the circle polaroid, and touch sensor is located the PET below, PET layer top is provided with the sclerosis antifouling membrane.

The explosion-proof film is formed by printing transparent explosion-proof ink on the surface of the ultrathin glass.

And the explosion-proof film is further positioned on the upper surface and/or the lower surface of the ultrathin glass.

The touch sensor further comprises a first optical adhesive layer, a second optical adhesive layer and a third optical adhesive layer, the multilayer thin film packaging layer is attached to the ultrathin glass layer through the first optical adhesive layer, the ultrathin glass layer is attached to the round polarizer through the second optical adhesive layer, and the round polarizer is attached to the touch sensor through the third optical adhesive layer.

Further, the thickness of the PI substrate is 10-20 micrometers, the thickness of the multilayer thin film packaging layer is 10-20 micrometers, the thickness of the first optical adhesive layer, the thickness of the second optical adhesive layer and the thickness of the third optical adhesive layer are all 30-60 micrometers, the thickness of the ultrathin glass layer is 30-100 micrometers, the thickness of the circular polarizer is 30-100 micrometers, and the thickness of the PET layer is 30-100 micrometers.

The first optical adhesive layer, the second optical adhesive layer and the third optical adhesive layer are OCR optical adhesive or OCA optical adhesive.

The utility model provides a structure of explosion-proof collapsible AMOLED display screen, includes PI base plate, circuit drive layer, OLED layer from bottom to top in proper order, and OLED layer top is equipped with multilayer film packaging layer, the laminating of multilayer film packaging layer top has the circular polaroid, and the laminating of circular polaroid top has the ultra-thin glass layer, the ultra-thin glass layer includes the rupture membrane on ultra-thin glass and ultra-thin glass surface, and the laminating has the PET layer of taking touch sensor above the ultra-thin glass layer, and touch sensor is located the PET below, PET layer top is provided with the antifouling membrane of sclerosis.

Compared with the prior art, the beneficial effects of the utility model are that:

1. a touch sensor (TP) is arranged below the PET and then attached to the foldable panel, and the foldable cover plate module realizes the touch function;

2. compared with the prior art of manufacturing the touch sensor on the AMOLED panel, the production difficulty can be reduced, and the production yield of the whole display screen is improved;

3. the upper and lower parts of the ultrathin glass are respectively printed with a layer of explosion-proof membrane, so that the toughness of the ultrathin glass can be enhanced, and the ultrathin glass is prevented from being broken by inward folding, outward turning and external force impact;

4. the explosion-proof film can also protect the ultrathin glass from being broken in the manufacturing process of the folding cover plate module, so that the production yield is greatly improved;

5. the rigidity of the ultrathin glass is utilized to protect the flexible AMOLED panel below the AMOLED panel from being damaged and failed by external force impact;

6. in the first AMOLED display screen structure, the ultrathin glass is doubly protected by the PET layer and the circular polarizer, so that the effect of resisting external force impact is better;

7. in the second type of AMOLED display screen structure, the circular polarizer is attached in a panel factory, and the flexible AMOLED panel can be protected in a subsequent production process.

Drawings

Fig. 1 is a structure of a first folding OLED display panel in the prior art;

FIG. 2 is a second prior art structure of a foldable OLED display panel;

fig. 3 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 4 is a flow chart of a first fabrication embodiment;

fig. 5 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 6 is a flow chart of a second fabrication embodiment.

Reference numerals: 1. a PI substrate; 2. a circuit driving layer; 3. an OLED layer; 4. a multilayer thin film encapsulation layer; 5. a first optical adhesive layer; 6. an ultra-thin glass layer; 61. ultra-thin glass; 62. an explosion-proof membrane; 7. a PET layer; 71. PET; 72. a touch sensor; 8. a second optical adhesive layer; 9. a circular polarizer; 10. a third optical adhesive layer; 11. hardening the anti-fouling film.

Detailed Description

The structure of the explosion-proof foldable AMOLED display screen according to the present invention is further described with reference to fig. 1 to 6.

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.

The first embodiment is as follows:

the utility model provides a structure of explosion-proof collapsible AMOLED display screen, includes PI base plate 1, circuit drive layer 2, OLED layer 3 from bottom to top in proper order, and OLED layer 3 top is equipped with multilayer film packaging layer 4, the laminating of multilayer film packaging layer 4 top has ultra-thin glass layer 6, ultra-thin glass layer 6 includes the rupture membrane 62 on ultra-thin glass 61 and ultra-thin glass 61 surface, and the laminating of ultra-thin glass layer 6 top has round polaroid 9, and the laminating has PET layer 7 of taking touch sensor 72 above round polaroid 9, and touch sensor 72 is located PET71 below, PET layer 7 top is provided with sclerosis antifouling membrane 11.

In this embodiment, the circuit driving layer 2 is a TFT made of LTPS, the OLED layer 3 is an RGB _ OLED, and the TFT and the OLED form an AMOLED.

In the present embodiment, the explosion-proof membrane 62 is formed by printing transparent explosion-proof ink on the surface of the ultra-thin glass 61.

The explosion-proof film 62 is positioned on the upper and/or lower surface of the ultra-thin glass 61, a single-sided or double-sided explosion-proof film 62 can be arranged, and preferably, transparent explosion-proof ink is printed on the upper and lower surfaces of the ultra-thin glass 61 to form the double-sided explosion-proof film 62

The preferred first optical adhesive layer 5, the second optical adhesive layer 8 and the third optical adhesive layer 10 of further including of this embodiment, laminate through the first optical adhesive layer 5 between the multilayer thin film encapsulation layer 4 and the ultra-thin glass layer 6, laminate through the second optical adhesive layer 8 between the ultra-thin glass layer 6 and the circular polarizer 9, pass through the third optical adhesive layer 10 between the circular polarizer 9 and the touch sensor 72.

In this embodiment, the thickness of the preferred PI substrate 1 is 10 to 20 micrometers, the thickness of the multilayer thin film encapsulation layer 4 is 10 to 20 micrometers, the thicknesses of the first optical adhesive layer 5, the second optical adhesive layer 8 and the third optical adhesive layer 10 are all 30 to 60 micrometers, the thickness of the ultra-thin glass layer 6 is 30 to 100 micrometers, the thickness of the circular polarizer 9 is 30 to 100 micrometers, and the thickness of the PET layer 7 is 30 to 100 micrometers.

The first optical adhesive layer 5, the second optical adhesive layer 8 and the third optical adhesive layer 10 are OCR optical adhesive or OCA optical adhesive.

Compared with the process of manufacturing the touch sensor 72 on the AMOLED panel in the embodiment, the production difficulty can be reduced, and the production yield of the whole display screen is improved; the upper and lower parts of the ultrathin glass 61 are respectively printed with a layer of explosion-proof film 62, so that the toughness of the ultrathin glass 61 can be enhanced, and the ultrathin glass is prevented from being broken by inward folding, outward turning and external force impact; the ultra-thin glass 61 obtains double protection of the PET layer 7 and the circular polarizer 9, and the effect of resisting external force impact is better.

A method for manufacturing the explosion-proof foldable AMOLED display screen in the first embodiment comprises the following steps,

s1: printing transparent explosion-proof ink on the surface of the ultrathin glass 61 to form an explosion-proof membrane 62, wherein the thickness of the explosion-proof membrane 62 is 1-30 microns, and drying the explosion-proof membrane for later use to finish the manufacture of the ultrathin glass layer 6; the total thickness of the ultra-thin glass layer 6 is 30-100 microns;

s2: selecting a PET71 diaphragm (comprising the touch sensor 72 and a PET71) with the touch sensor 72, wherein the thickness of the PET71 diaphragm is 80-150 microns, plating a hardening film on the upper surface of the PET71 diaphragm, and plating an anti-fouling film on the upper surface of the hardening film;

s3: attaching the PET71 manufactured in the step S2 to the circular polarizer 9 through OCR/OCA optical cement, wherein the circular polarizer 9 is attached to one surface of the touch sensor 72; the thickness of the circular polarizer 9 is 30-100 micrometers;

s4: laminating the circular polarizer 9 laminated with the PET71 in the step S3 and the ultrathin glass 61 with the explosion-proof film 62 in the step S1 through OCR/OCA optical cement to form a foldable protective cover plate;

s5: and adhering the foldable protection cover plate manufactured in the step S4 to the flexible AMOLED panel through OCR/OCA optical cement.

Also included is a process of fabricating a flexible AMOLED, comprising the steps of: plating an LTPS-TFT circuit on the PI substrate 1 to form a circuit driving layer 2; evaporating and plating OLED on the LTPS-TFT circuit to form an OLED layer 3; packaging the OLED by adopting a plurality of thin films to form a plurality of thin film packaging layers 4; and finishing the manufacture of the flexible AMOLED panel.

In the embodiment, the PET71 film with the touch sensor 72 can adopt a copper foil-based bonded PET71 film touch sensor 72 disclosed in application No. 201821289498.8.

Example two:

the utility model provides a structure of explosion-proof collapsible AMOLED display screen, includes PI base plate 1, circuit drive layer 2, OLED layer 3 from bottom to top in proper order, and OLED layer 3 top is equipped with multilayer film encapsulation layer 4, the laminating of multilayer film encapsulation layer 4 top has round polaroid 9, and the laminating has ultra-thin glass layer 6 above round polaroid 9, ultra-thin glass layer 6 includes the rupture membrane 62 on ultra-thin glass 61 and ultra-thin glass 61 surface, and the laminating has PET layer 7 of taking touch sensor 72 above ultra-thin glass layer 6, and touch sensor 72 is located PET71 below, PET layer 7 top is provided with sclerosis antifouling membrane 11.

The explosion-proof film 62 is formed by printing transparent explosion-proof ink on the surface of the ultra-thin glass 61 as in the first embodiment.

A method for manufacturing an explosion-proof foldable AMOLED display screen of the second embodiment comprises the following steps,

s1: printing transparent explosion-proof ink on the surface of the ultrathin glass 61 to form an explosion-proof membrane 62, wherein the thickness of the explosion-proof membrane 62 is 1-30 microns, and drying the explosion-proof membrane for later use to finish the manufacture of the ultrathin glass layer 6;

s2: selecting a PET71 diaphragm with a touch sensor 72, plating a hardened film on the upper surface of the diaphragm, and plating an anti-fouling film on the upper surface of the hardened film;

s3: adhering the PET71 manufactured in the step S2 to the ultrathin glass 61 with the explosion-proof film 62 manufactured in the step S1 through OCR/OCA optical cement, and adhering one surface of the touch sensor 72 in the PET71 to the ultrathin glass 61 with the explosion-proof film 62 to form a foldable protective cover plate;

s4: the circular polarizer 9 is attached to the flexible AMOLED panel through OCR/OCA optical cement;

s5: and (5) attaching the foldable protective cover plate manufactured in the step (S3) to the circular polarizer 9 after the step (S4) through OCR/OCA optical cement.

In this embodiment, the lamination of the circular polarizer 9 and the flexible AMOLED panel may be completed in a panel factory, and the flexible AMOLED panel may be protected in a subsequent production process.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a structure of explosion-proof collapsible AMOLED display screen, includes PI base plate, circuit drive layer, OLED layer from bottom to top in proper order, OLED layer top is equipped with multilayer film packaging layer, its characterized in that: the multilayer film packaging layer is laminated with an ultrathin glass layer, the ultrathin glass layer comprises ultrathin glass and an explosion-proof film on the surface of the ultrathin glass, a round polaroid is laminated on the ultrathin glass layer, a PET (polyethylene terephthalate) layer with a touch sensor is laminated on the round polaroid, the touch sensor is located below the PET, and a hardening antifouling film is arranged above the PET layer.

2. The structure of the explosion-proof foldable AMOLED display screen of claim 1, wherein: the explosion-proof membrane is formed by printing transparent explosion-proof ink on the surface of the ultrathin glass.

3. The structure of the explosion-proof foldable AMOLED display screen of claim 1, wherein: the explosion-proof film is positioned on the upper surface and/or the lower surface of the ultrathin glass.

4. The structure of the explosion-proof foldable AMOLED display screen of claim 2, wherein: the touch control panel is characterized by further comprising a first optical adhesive layer, a second optical adhesive layer and a third optical adhesive layer, the multilayer thin film packaging layer is attached to the ultrathin glass layer through the first optical adhesive layer, the ultrathin glass layer is attached to the round polaroid through the second optical adhesive layer, and the round polaroid is attached to the touch control sensor through the third optical adhesive layer.

5. The structure of the explosion-proof foldable AMOLED display screen of claim 3, wherein: the thickness of the PI substrate is 10-20 micrometers, the thickness of the multilayer thin film packaging layer is 10-20 micrometers, the thickness of each of the first optical adhesive layer, the second optical adhesive layer and the third optical adhesive layer is 30-60 micrometers, the thickness of the ultrathin glass layer is 30-100 micrometers, the thickness of the circular polarizer is 30-100 micrometers, and the thickness of the PET layer is 30-100 micrometers.

6. The structure of the explosion-proof foldable AMOLED display screen of claim 4, wherein: the first optical adhesive layer, the second optical adhesive layer and the third optical adhesive layer are OCR optical cement or OCA optical cement.

7. The utility model provides a structure of explosion-proof collapsible AMOLED display screen, includes PI base plate, circuit drive layer, OLED layer from bottom to top in proper order, OLED layer top is equipped with multilayer film packaging layer, its characterized in that: the utility model discloses a multilayer thin film packaging layer, including multilayer thin film encapsulation layer, circle polaroid top laminating has the ultrathin glass layer, the ultrathin glass layer includes the rupture membrane on ultrathin glass and ultrathin glass surface, and the laminating has the PET layer of taking touch sensor above the ultrathin glass layer, and touch sensor is located the PET below, PET layer top is provided with sclerosis antifouling membrane.