CN-122003030-A - Display substrate, display panel, manufacturing method and peep-proof method

CN122003030ACN 122003030 ACN122003030 ACN 122003030ACN-122003030-A

Abstract

The invention discloses a display substrate, a display panel, a manufacturing method and an anti-peeping method, wherein the display substrate comprises a light emitting device layer and a packaging layer, the light emitting device layer comprises a first light emitting unit layer, an intermediate layer and a second light emitting unit layer which are arranged in a stacked mode, the first light emitting layer of the first light emitting unit layer comprises a pixel defining layer and a first opening on the pixel defining layer, the intermediate layer comprises a light transmitting part and an angle expanding component which correspond to the first opening, the light transmitting part transmits first light rays of a first front view angle of the first light emitting layer, the angle expanding component expands light emitting angles of second light rays except the first front view angle, a light processing layer of the second light emitting unit layer forms third light rays according to the incident second light rays, the first light rays and part of emergent light of the second light emitting layer form a first picture which is positioned at the first front view angle, and the second picture is different from the first picture.

Inventors

YANG TANG
WEI XIAODAN
HE BAOSHENG
YE CHAO
LIU PEI
WANG DAHONG

Assignees

京东方科技集团股份有限公司
成都京东方光电科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260211

Claims (12)

1. The display substrate is characterized by comprising a substrate, a light-emitting device layer and a packaging layer which are sequentially laminated on the substrate, wherein the light-emitting device layer comprises a first light-emitting unit layer, an intermediate layer and a second light-emitting unit layer which are laminated, wherein the first light-emitting unit layer, the intermediate layer and the second light-emitting unit layer are arranged in a laminated manner The first light emitting unit layer comprises a first light emitting layer comprising a pixel defining layer, a first light emitting material located in a first opening formed by the pixel defining layer; the intermediate layer comprises a light transmission part corresponding to the first opening and an angle expanding component arranged at the periphery of the light transmission part, the light transmission part is used for transmitting first light rays with a first front view angle in the emergent light of the first light-emitting layer, and the angle expanding component is used for expanding the emergent light angles of second light rays except the first front view angle in the emergent light of the first light-emitting layer; The second light-emitting unit layer comprises a second light-emitting layer, the second light-emitting layer comprises a light treatment layer and a second light-emitting material positioned in a second opening formed by the light treatment layer, the light treatment layer is used for forming third light different from second light according to the incident second light, the first light and part of emergent light of the second light-emitting layer form a first picture positioned at the first front view angle, the third light and the other part of emergent light of the second light-emitting layer form a second picture positioned outside the first front view angle, and the second picture is different from the first picture.
2. The display substrate according to claim 1, wherein the light-emitting device layer further comprises a first electrode provided on a side of the first light-emitting unit layer close to the substrate, and a second electrode provided on a side of the second light-emitting unit layer close to the package layer; The intermediate layer is a charge generation layer.
3. The display substrate of claim 1, wherein the display substrate comprises a transparent substrate, The first light-emitting unit layer further comprises a third electrode close to one side of the substrate base plate and a fourth electrode close to one side of the packaging layer; the second light emitting unit layer further comprises a fifth electrode close to one side of the substrate base plate and a sixth electrode close to one side of the packaging layer.
4. A display substrate according to any one of claims 1-3, wherein the corner extending component is a prismatic structure at least partially surrounding the light transmitting portion, and a mirror surface of the prismatic structure adjacent to the light transmitting portion is an arc surface.
5. A display substrate according to any one of claims 1-3, wherein the corner-expansion assembly comprises at least two corner-expansion portions, the corner-expansion portions being diamond-shaped prismatic structures.
6. The display substrate of claim 5, wherein the diamond-shaped prismatic structure comprises a first diagonal set of mirrors and a second diagonal set of mirrors disposed in opposing parallel, wherein The first diagonal mirror surface group comprises a first mirror surface close to the light transmission part and close to the substrate base plate and a second mirror surface opposite to the first mirror surface, the first mirror surface is an incident mirror surface of second light, and the second mirror surface is an emergent mirror surface of the second light; the second diagonal mirror surface group comprises a third mirror surface which is close to the light transmission part and far away from the substrate and a fourth mirror surface which is arranged opposite to the third mirror surface, and the included angle between the third mirror surface and the fourth mirror surface and the substrate is more than or equal to 65 degrees and less than or equal to 75 degrees.
7. The display substrate according to claim 6, wherein, The third mirror surface and the fourth mirror surface are provided with reflecting layers; And/or The rhombic prism is in a rhombic shape on the axis section perpendicular to the substrate, and the length of the rhombic prism on the diagonal line parallel to the direction of the substrate is more than or equal to 5mm and less than or equal to 15mm.
8. The display substrate according to claim 1, wherein a center of the first opening, a center of the light transmitting portion, and an orthographic projection of a center of the second opening on the substrate overlap; The orthographic projection of the light-transmitting part on the substrate falls in the orthographic projection of the second opening on the substrate, and the orthographic projection of the second opening on the substrate falls in the orthographic projection of the first opening on the substrate.
9. The display substrate according to claim 1, wherein the material of the light treatment layer is a nonlinear material, and the wavelength of the third light ray is different from the wavelength of the second light ray.
10. A display panel comprising a display substrate according to any one of claims 1-9.
11. A method of manufacturing the display substrate according to any one of claims 1 to 9, comprising: Forming a pixel defining layer on the first light emitting unit layer, forming a first light emitting material of the first light emitting layer of the first light emitting unit layer by vapor deposition in a first opening formed by the pixel defining layer, depositing the intermediate film layer on the first light emitting unit layer, patterning the intermediate film layer to form an intermediate layer, and forming a corner-expanding component in the intermediate layer, forming a light treatment film layer on the intermediate layer, patterning the light treatment film layer to form a light treatment layer, and forming a second light emitting material of the second light emitting layer of the second light emitting unit layer by vapor deposition in a second opening formed by the light treatment layer; And forming an encapsulation layer covering the light emitting device layer.
12. A peep-proof method using the display substrate according to any one of claims 1 to 9, comprising: A first light ray with a first forward view angle in the emergent light of the first light-emitting unit layer enters the second light-emitting unit layer through the light transmission part of the intermediate layer, and a second light ray except the first forward view angle in the emergent light of the first light-emitting unit layer enters the second light-emitting unit layer through the angle expanding component of the intermediate layer; The first light and part of the emergent light of the second light-emitting layer of the second light-emitting unit layer form a first picture positioned at the first front view angle, the second light passes through the light treatment layer of the second light-emitting unit layer to form a third light different from the second light, the third light and the other part of the emergent light of the second light-emitting layer form a second picture positioned outside the first front view angle, and the second picture is different from the first picture.

Description

Display substrate, display panel, manufacturing method and peep-proof method Technical Field The invention relates to the technical field of display, in particular to a display substrate, a display panel, a manufacturing method and an anti-peeping method. Background With the rapid development of display technology, display devices are increasingly used in various aspects of people's life. However, when using an electronic device in public places, information on a screen is easily seen by surrounding people. For example, in the places such as subways, buses and cafes, other people may peep to the screen content unintentionally or intentionally, including sensitive information such as personal photos, chat records, mails and work files, and in particular, peep-proof processing is required to be performed on the display content when mobile payment is performed by using a mobile phone and bank account information is checked. Accordingly, it is desirable to provide a privacy display device. Disclosure of Invention In order to solve at least one of the above problems, a first embodiment of the present invention provides a display substrate comprising a base substrate, a light emitting device layer and a package layer sequentially stacked on the base substrate, the light emitting device layer comprising a first light emitting unit layer, an intermediate layer and a second light emitting unit layer stacked, wherein The first light emitting unit layer comprises a first light emitting layer comprising a pixel defining layer, a first light emitting material located in a first opening formed by the pixel defining layer; the intermediate layer comprises a light transmission part corresponding to the first opening and an angle expanding component arranged at the periphery of the light transmission part, the light transmission part is used for transmitting first light rays with a first front view angle in the emergent light of the first light-emitting layer, and the angle expanding component is used for expanding the emergent light angles of second light rays except the first front view angle in the emergent light of the first light-emitting layer; The second light-emitting unit layer comprises a second light-emitting layer, the second light-emitting layer comprises a light treatment layer and a second light-emitting material positioned in a second opening formed by the light treatment layer, the light treatment layer is used for forming third light different from second light according to the incident second light, the first light and part of emergent light of the second light-emitting layer form a first picture positioned at the first front view angle, the third light and the other part of emergent light of the second light-emitting layer form a second picture positioned outside the first front view angle, and the second picture is different from the first picture. For example, in the display substrate provided in some embodiments of the present application, the light emitting device layer further includes a first electrode disposed on a side of the first light emitting unit layer close to the substrate, and a second electrode disposed on a side of the second light emitting unit layer close to the encapsulation layer; The intermediate layer is a charge generation layer. For example, in the display substrate provided in some embodiments of the present application, the first light emitting unit layer further includes a third electrode near one side of the substrate and a fourth electrode near one side of the encapsulation layer; The second light emitting unit layer further comprises a fifth electrode near one side of the substrate base plate and a sixth electrode near one side of the packaging layer For example, in the display substrate provided in some embodiments of the present application, the angle expanding component is a prism structure, the prism structure at least partially surrounds the light-transmitting portion, and a mirror surface of the prism structure near the light-transmitting portion is an arc surface. For example, in some embodiments of the present application, the corner-expanding assembly includes at least two corner-expanding portions, and the corner-expanding portions are diamond-shaped prism structures. For example, in some embodiments of the present application, the diamond-shaped prism structure includes a first diagonal mirror group and a second diagonal mirror group disposed in parallel with each other, where The first diagonal mirror surface group comprises a first mirror surface close to the light transmission part and close to the substrate base plate and a second mirror surface opposite to the first mirror surface, the first mirror surface is an incident mirror surface of second light, and the second mirror surface is an emergent mirror surface of the second light; the second diagonal mirror surface group comprises a third mirror surface which is close to the light transmission part and far