Screen cover plate, display apparatus, and electronic device
In accordance with an embodiment, a screen cover plate includes: a first force-bearing plate and a second force-bearing plate, wherein the first force-bearing plate and the second force-bearing plate are disposed in a laminated manner, and both the first force-bearing plate and the second force-bearing plate are flexible transparent plates; and an optical adhesive layer located between the first force-bearing plate and the second force-bearing plate, and bonding the first force-bearing plate and the second force-bearing plate together, wherein a material of the optical adhesive layer is curable optical adhesive.
1 . A screen cover plate, comprising:
a first force-bearing plate and a second force-bearing plate, wherein the first force-bearing plate and the second force-bearing plate are disposed in a laminated manner, and both the first force-bearing plate and the second force-bearing plate are flexible transparent plates; and
an optical adhesive layer located between the first force-bearing plate and the second force-bearing plate, wherein the first force-bearing plate and the second force-bearing plate are bonded together via the optical adhesive layer, and a material of the optical adhesive layer is curable optical adhesive, wherein the screen cover plate satisfies the following relationship:
E
first
force
‐
bearing
plate
*
t
first
force
‐
bearing
plate
+
E
optical
adhesive
layer
*
t
optical
adhesive
layer
+
E
second
force
‐
bearing
plate
*
t
second
force
‐
bearing
plate
t
first
force
‐
bearing
plate
+
t
optical
adhesive
layer
+
t
second
force
‐
bearing
plate
>
E
first
force
‐
bearing
plate
,
wherein
E first force-bearing plate is a Young's modulus of the first force-bearing plate;
t first force-bearing plate is a thickness of the first force-bearing plate;
E optical adhesive layer is a Young's modulus of the optical adhesive layer;
t optical adhesive layer is a thickness of the optical adhesive layer;
E second force-bearing plate is a Young's modulus of the second force-bearing plate; and
t second force-bearing plate is a thickness of the second force-bearing plate.
2 . The screen cover plate according to claim 1 , wherein the material of the optical adhesive layer is light-curable optical adhesive or heat-curable optical adhesive.
3 . The screen cover plate according to claim 1 , wherein a material of the first force-bearing plate is polyimide.
4 . The screen cover plate according to claim 1 , wherein a material of the second force-bearing plate is polyimide or polyamide.
5 . The screen cover plate according to claim 1 , wherein the screen cover plate further comprises a hardened coating located on a plate surface of the first force-bearing plate facing away from the optical adhesive layer.
6 . The screen cover plate according to claim 5 , wherein a material of the hardened coating is acrylate or silane.
7 . The screen cover plate according to claim 1 , wherein a flexibility of the first force-bearing plate is greater than or equal to a flexibility of the second force-bearing plate.
8 . The screen cover plate according to claim 1 , wherein the thickness of the first force-bearing plate is less than or equal to the thickness of the second force-bearing plate.
9 . A display apparatus, comprising:
a display panel; and
a screen cover plate disposed on a display surface of the display panel, the screen cover plate comprising:
a first force-bearing plate and a second force-bearing plate, wherein the first force-bearing plate and the second force-bearing plate are disposed in a laminated manner, both the first force-bearing plate and the second force-bearing plate are flexible transparent plates, and the first force-bearing plate is disposed further away from the display panel than the second force-bearing plate,
an optical adhesive layer located between the first force-bearing plate and the second force-bearing plate, wherein the first force-bearing plate and the second force-bearing plate are bonded together via the optical adhesive layer, and a material of the optical adhesive layer is curable optical adhesive, wherein the screen cover plate satisfies the following relationship:
E
first
force
‐
bearing
plate
*
t
first
force
‐
bearing
plate
+
E
optical
adhesive
layer
*
t
optical
adhesive
layer
+
E
second
force
‐
bearing
plate
*
t
second
force
‐
bearing
plate
t
first
force
‐
bearing
plate
+
t
optical
adhesive
layer
+
t
second
force
‐
bearing
plate
>
E
first
force
‐
bearing
plate
,
wherein
E first force-bearing plate is a Young's modulus of the first force-bearing plate;
t first force-bearing plate is a thickness of the first force-bearing plate;
E optical adhesive layer is a Young's modulus of the optical adhesive layer;
t optical adhesive layer is a thickness of the optical adhesive layer;
E second force-bearing plate is a Young's modulus of the second force-bearing plate; and
t second force-bearing plate is a thickness of the second force-bearing plate.
10 . The display apparatus according to claim 9 , wherein the material of the optical adhesive layer is light-curable optical adhesive or heat-curable optical adhesive.
11 . The display apparatus according to claim 10 , wherein:
a material of the first force-bearing plate is polyimide; and
a material of the second force-bearing plate is polyimide or polyamide.
12 . The display apparatus according to claim 10 , wherein the screen cover plate further comprises a hardened coating located on a plate surface of the first force-bearing plate facing away from the optical adhesive layer.
13 . The display apparatus according to claim 12 , wherein a material of the hardened coating is acrylate or silane.
14 . The display apparatus according to claim 10 , wherein a flexibility of the first force-bearing plate is greater than or equal to a flexibility of the second force-bearing plate.
15 . The display apparatus according to claim 10 , wherein the thickness of the first force-bearing plate is less than or equal to the thickness of the second force-bearing plate.
16 . The display apparatus according to claim 10 , further comprising a bonding layer between the display panel and the second force-bearing plate.
17 . An electronic device, comprising a housing and the display apparatus according to claim 9 , wherein the display apparatus is mounted in the housing in a fastened manner.
18 . A method, comprising:
adhering a first force-bearing plate to a second force-bearing plate using an optical adhesive layer to form a screen cover plate in which the first force-bearing plate and the second force-bearing plate are disposed in a laminated manner, wherein the first force-bearing plate and the second force-bearing plate are flexible transparent plates; and
adhering the second force-bearing plate to a surface of a display using a curable optical adhesive to form the optical adhesive layer located between the first force-bearing plate and the second force-bearing plate, such that the first force-bearing plate and the second force-bearing plate are bonded together via the optical adhesive layer, wherein the screen cover plate satisfies the following relationship:
E
first
force
‐
bearing
plate
*
t
first
force
‐
bearing
plate
+
E
optical
adhesive
layer
*
t
optical
adhesive
layer
+
E
second
force
‐
bearing
plate
*
t
second
force
‐
bearing
plate
t
first
force
‐
bearing
plate
+
t
optical
adhesive
layer
+
t
second
force
‐
bearing
plate
>
E
first
force
‐
bearing
plate
,
wherein
E first force-bearing plate is a Young's modulus of the first force-bearing plate;
t first force-bearing plate is a thickness of the first force-bearing plate;
E optical adhesive layer is a Young's modulus of the optical adhesive layer;
t optical adhesive layer is a thickness of the optical adhesive layer;
E second force-bearing plate is a Young's modulus of the second force-bearing plate; and
t second force-bearing plate is a thickness of the second force-bearing plate.
19 . The method of claim 18 , wherein a flexibility of the first force-bearing plate is greater than or equal to a flexibility of the second force-bearing plate.
20 . The method of claim 18 , wherein a material of the optical adhesive layer is light-curable optical adhesive or heat-curable optical adhesive.