阅读说明：本技术 可折叠显示屏及其组装方法、显示装置 (Foldable display screen, assembling method thereof and display device ) 是由 李钊 史世明 于 2019-08-19 设计创作，主要内容包括：提供一种可折叠显示屏及其组装方法、显示装置。可折叠显示屏包括：显示面板；触摸感测面板,位于所述显示面板的一侧；第一光学胶层,位于所述触摸感测面板的远离所述显示面板的一侧；以及第二光学胶层,位于所述显示面板和所述触摸感测面板之间；所述第一光学胶层的厚度和所述第二光学胶层的厚度均为20-200μm,并且在工作温度下,所述第一光学胶层的弹性模量和所述第二光学胶层的弹性模量均小于1Mpa。(A foldable display screen, an assembling method thereof and a display device are provided. The foldable display screen includes: a display panel; a touch sensing panel positioned at one side of the display panel; the first optical adhesive layer is positioned on one side, far away from the display panel, of the touch sensing panel; the second optical adhesive layer is positioned between the display panel and the touch sensing panel; the thickness of the first optical adhesive layer and the thickness of the second optical adhesive layer are both 20-200 μm, and the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both less than 1Mpa at the working temperature.)

A foldable display screen, comprising:

a display panel;

a touch sensing panel positioned at one side of the display panel;

the first optical adhesive layer is positioned on one side, far away from the display panel, of the touch sensing panel; and

a second optical adhesive layer between the display panel and the touch sensing panel,

wherein the thickness of the first optical adhesive layer and the thickness of the second optical adhesive layer are both 20-200 μm, and

and at the working temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both less than 1 Mpa.

The foldable display screen of claim 1, wherein the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive are each greater than 10Kpa at the operating temperature.

The foldable display screen of claim 1 or 2, wherein the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive are each less than 200Kpa at the operating temperature.

A foldable display according to any one of claims 1 to 3 wherein the operating temperature is a temperature in the range-30 ℃ to 60 ℃.

The foldable display screen of any one of claims 1 to 4, wherein the operating temperature comprises at least one of a first temperature, a second temperature, and a third temperature, the first temperature being less than the second temperature, the first temperature being greater than the third temperature, the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive being less than 1MPa at each of the first temperature, the second temperature, and the third temperature.

The foldable display of claim 5, wherein the first temperature comprises 20 ℃, the second temperature comprises 60 ℃, and the third temperature comprises-30 ℃.

The foldable display screen of claim 5 or 6, wherein at the first temperature, the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive are each 30-50 Kpa; at the second temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both 10-30 Kpa; at the third temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both 90-110 Kpa.

The foldable display of claim 5 or 6, wherein at the first temperature, the elastic modulus of the first optical adhesive layer is 100-120Kpa, and the elastic modulus of the second optical adhesive layer is 30-50 Kpa; at the second temperature, the elastic modulus of the first optical adhesive layer is 80-100Kpa, and the elastic modulus of the second optical adhesive layer is 10-30 Kpa; at the third temperature, the elastic modulus of the first optical adhesive layer is 850-950Kpa, and the elastic modulus of the second optical adhesive layer is 90-110 Kpa.

The foldable display screen of any one of claims 1-8, wherein the first layer of optical glue has a modulus of elasticity that is greater than or equal to the modulus of elasticity of the second layer of optical glue, and the thickness of the first layer of optical glue is less than or equal to the thickness of the second layer of optical glue.

The foldable display screen of any one of claims 1-9, wherein the thickness of the first layer of optical glue and the thickness of the second layer of optical glue are both 20-200 μ ι η.

The foldable display screen of any one of claims 1-10, wherein the thickness of the second layer of optical glue is 1.5-3.5 times the thickness of the first layer of optical glue.

A foldable display according to any one of claims 1 to 11 wherein the first layer of optical glue has a thickness of 40 to 60 μm and the second layer of optical glue has a thickness of 50 to 145 μm.

The foldable display of any one of claims 1-12, further comprising a carrier film on a side of the display panel distal from the second layer of adhesive and an anti-reflective layer between the display panel and the second layer of adhesive.

The foldable display of claim 13, wherein the anti-reflective layer comprises a polarizer.

The foldable display screen of any one of claims 1 to 14, further comprising a cover layer, wherein the cover layer is located on a side of the first layer of optical glue that is distal to the touch-sensing panel.

The foldable display screen of any one of claims 1-15, wherein the foldable display screen has a first neutral layer and a second neutral layer,

the first neutral layer is located in the display panel and the second neutral layer is located in the touch sensing panel.

The foldable display screen of claim 16, wherein the display panel comprises a first substrate base, and a light emitting device layer and an encapsulation layer on a side of the first substrate base proximate to the second optical glue layer, the encapsulation layer configured to encapsulate light emitting devices in the light emitting device layer, the first neutral layer comprising the encapsulation layer.

The foldable display screen of claim 16 or 17, wherein the touch sensing panel comprises a second substrate base and a touch structure on the second substrate base, the second neutral layer comprising the touch structure.

A foldable display according to any one of claims 1 to 18 wherein the foldable display comprises: a bendable region; and a non-bending area, wherein the non-bending area is provided with a plurality of bending parts,

the bendable region is configured to be bendable along a rotating shaft extending in a first direction, the non-bendable region is located on at least one side of the bendable region in a second direction, and the second direction is perpendicular to the first direction.

A display device comprising a foldable display screen according to any one of claims 1 to 19.

A foldable display screen, comprising:

a display panel;

a touch sensing panel positioned at one side of the display panel;

the first optical adhesive layer is positioned on one side, far away from the display panel, of the touch sensing panel; and

a second optical adhesive layer between the display panel and the touch sensing panel,

under the working temperature, the ratio of the elastic modulus of the first optical adhesive layer to the thickness of the first optical adhesive layer is a first ratio, the ratio of the elastic modulus of the second optical adhesive layer to the thickness of the second optical adhesive layer is a second ratio, and the first ratio and the second ratio are both smaller than 1/20 Mpa/mum.

The foldable display screen of claim 21, wherein the first ratio and the second ratio are positively correlated.

The foldable display screen of claim 21 or 22, wherein the first ratio is greater than the second ratio.

A foldable display screen according to any one of claims 21 to 23, wherein the first ratio and the second ratio are both greater than 0.01/200Mpa/μm.

A foldable display screen according to any one of claims 21 to 24 wherein the first ratio is less than 1/40Mpa/μm and greater than 0.01/60Mpa/μm.

A foldable display screen according to any one of claims 21 to 25 wherein the second ratio is less than 1/50Mpa/μm and greater than 0.01/145Mpa/μm.

The foldable display of any one of claims 21-26, wherein the thickness of the first layer of optical glue and the thickness of the second layer of optical glue are both 20-200 μ ι η, and wherein

And at the working temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both less than 1 Mpa.

The foldable display screen of any one of claims 21-27, wherein the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive are each greater than 10Kpa at the operating temperature.

The foldable display screen of any one of claims 21-28, wherein the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive are each less than 200Kpa at the operating temperature.

A foldable display screen according to any one of claims 21 to 29 wherein the operating temperature is a temperature in the range-30 ℃ to 60 ℃.

The foldable display screen of any one of claims 21 to 30, wherein the operating temperature comprises at least one of a first temperature, a second temperature, and a third temperature, the first temperature being less than the second temperature, the first temperature being greater than the third temperature, the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive being less than 1Mpa at each of the first temperature, the second temperature, and the third temperature.

The foldable display of claim 31, wherein the first temperature comprises 20 ℃, the second temperature comprises 60 ℃, and the third temperature comprises-30 ℃.

The foldable display screen of claim 31 or 32, wherein at the first temperature, the modulus of elasticity of the first layer of adhesive and the modulus of elasticity of the second layer of adhesive are each 30-50 Kpa; at the second temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both 10-30 Kpa; at the third temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both 90-110 Kpa.

The foldable display screen of claim 31 or 32, wherein at the first temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both 100-120 Kpa; at the second temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both 80-100 Kpa; at the third temperature, the elastic modulus of the first optical adhesive layer and the elastic modulus of the second optical adhesive layer are both 850-950 Kpa.

The foldable display screen of any one of claims 21-34, wherein the first layer of optical glue has a modulus of elasticity that is greater than or equal to the modulus of elasticity of the second layer of optical glue, and the thickness of the first layer of optical glue is less than or equal to the thickness of the second layer of optical glue.

The foldable display screen of any one of claims 21-35, wherein the thickness of the second layer of optical glue is 1.5-3.5 times the thickness of the first layer of optical glue.

A foldable display screen according to any one of claims 21 to 36, wherein the first layer of optical glue has a thickness of 40 to 60 μm and the second layer of optical glue has a thickness of 50 to 145 μm.

The foldable display of any one of claims 21-37, further comprising a carrier film on a side of the display panel distal from the second layer of adhesive and an anti-reflective layer between the display panel and the second layer of adhesive.

The foldable display screen of any one of claims 21 to 38, further comprising a cover layer, wherein the cover layer is located on a side of the first layer of optical glue remote from the touch sensing panel.

The foldable display screen of any one of claims 21-39, wherein the foldable display screen has a first neutral layer and a second neutral layer, the first neutral layer being located in the display panel and the second neutral layer being located in the touch sensing panel;

the display panel comprises a first substrate base plate, a light-emitting device layer and an encapsulation layer, wherein the light-emitting device layer and the encapsulation layer are positioned on one side, close to the second optical adhesive layer, of the first substrate base plate;

the touch sensing panel includes a second substrate base and a touch structure on the second substrate base, the second neutral layer including the touch structure.

A method of assembling a foldable display screen, comprising:

attaching a first anti-reflection layer and a first base film to two sides of a mother board of a display panel respectively;

attaching the touch sensing panel mother board and the first covering layer to each other through a first optical adhesive film; and

and attaching the first anti-reflection layer and the touch sensing panel mother board through a second optical adhesive film, wherein the second optical adhesive film and the first optical adhesive film are respectively arranged on two sides of the touch sensing panel mother board.