CN-117177603-B - Display panel, preparation method thereof and display device

CN117177603BCN 117177603 BCN117177603 BCN 117177603BCN-117177603-B

Abstract

The embodiment of the application provides a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, a luminous functional layer, a peep-proof anode layer, a shared anode layer, a driving circuit layer and a light modulation film layer. The anti-peeping anode comprises a plurality of anti-peeping anodes, a plurality of shared anodes, a drive circuit layer, a light modulation film layer and a substrate, wherein the anti-peeping anodes are arranged in one-to-one correspondence with the anti-peeping subpixels of the light-emitting functional layer, the shared anodes are arranged in one-to-one correspondence with the shared subpixels of the light-emitting functional layer, the anti-peeping drive circuit of the drive circuit layer is electrically connected with the anti-peeping anodes, the shared drive circuit of the drive circuit layer is electrically connected with the shared anodes, the light modulation film layer is arranged on one side, far away from the substrate, of the light-emitting functional layer, and orthographic projection of the light modulation film layer on the substrate covers orthographic projection of the anti-peeping subpixels and the shared subpixels on the substrate. The display panel provided by the embodiment of the application has the peep-proof mode and the sharing mode, can meet the display requirements of peep-proof or non-peep-proof without externally hanging a peep-proof film, and is convenient to use.

Inventors

XIE MINGZHE
WANG TAO
GAI RENRONG
ZHANG HAO

Assignees

京东方科技集团股份有限公司

Dates

Publication Date: 20260505
Application Date: 20231013

Claims (8)

1. A display panel, comprising: A substrate; The light-emitting functional layer is arranged on one side of the substrate and comprises a plurality of pixel units, wherein each pixel unit comprises a peep-proof sub-pixel and a sharing sub-pixel; the peep-proof anode layer is positioned between the substrate and the luminous functional layer and comprises a plurality of peep-proof anodes which are arranged at intervals; The shared anode layer is positioned between the substrate and the light-emitting functional layer and comprises a plurality of shared anodes which are arranged at intervals; the anti-peeping anode comprises a substrate, a shared anode layer, a drive circuit layer, a peeping-preventing drive circuit and a shared anode layer, wherein the drive circuit layer is positioned between the substrate and the anti-peeping anode layer and between the substrate and the shared anode layer; the light modulation film layer is positioned at one side of the light-emitting functional layer far away from the substrate, and orthographic projection of the light modulation film layer on the substrate covers orthographic projections of the peep-proof sub-pixels and the sharing sub-pixels on the substrate; The peep-proof anode and the shared anode are arranged at intervals in orthographic projection on the substrate; the shared anode layer is positioned on one side of the peep-proof anode layer far away from the substrate; the display panel further includes a fourth pixel defining layer and a fifth pixel defining layer stacked; The fourth pixel limiting layer is arranged between the peep-proof anode layer and the light modulation film layer, the shared anode layer is arranged between the fourth pixel limiting layer and the light modulation film layer, and the fifth pixel limiting layer is arranged between the shared anode layer and the light modulation film layer; The fourth pixel limiting layer and the fifth pixel limiting layer are provided with a plurality of pixel openings penetrating through the fourth pixel limiting layer and the fifth pixel limiting layer, and each pixel opening is divided into a peep-proof pixel opening and a sharing pixel opening by a third partition structure; the peep-proof pixel opening penetrates through the fourth pixel limiting layer and the fifth pixel limiting layer to enable the peep-proof anode to be partially exposed, and the peep-proof sub-pixel is arranged in the peep-proof pixel opening; the third partition structure comprises a fourth partition layer, a fourth passivation layer and a fifth partition layer which are sequentially arranged along the direction away from the substrate; The fourth barrier layer and the fourth pixel limiting layer are of an integral structure; the fifth barrier layer and the fifth pixel defining layer are of an integral structure; and one side of the fourth barrier layer and one side of the fifth barrier layer, which face the peep-proof pixel opening, are inwards retracted relative to the fourth passivation layer to form an undercut structure, and the undercut structure enables the light-emitting functional layer to be disconnected at the third partition structure.
2. The display panel of claim 1, wherein the privacy pixel opening and the shared pixel opening are both the same in shape and width, or the privacy pixel opening has a width that is less than the width of the shared pixel opening.
3. The display panel according to claim 1, wherein the light modulation film layer includes a first black matrix, a first organic layer, and a second black matrix sequentially disposed in a direction away from the substrate; The first black matrix comprises a plurality of first peep-proof openings and a plurality of first sharing openings, and the second black matrix comprises a plurality of second peep-proof openings and a plurality of second sharing openings; The first peep-proof openings and the second peep-proof openings are respectively arranged in one-to-one correspondence with the peep-proof sub-pixels, and the orthographic projections of the first peep-proof openings and the second peep-proof openings on the substrate cover orthographic projections of the peep-proof pixel openings on the substrate; The first sharing openings and the second sharing openings are respectively arranged in one-to-one correspondence with the sharing sub-pixels, and the orthographic projections of the first sharing openings and the second sharing openings on the substrate cover the orthographic projections of the sharing pixel openings on the substrate; The width of the first peep-proof opening is smaller than that of the first sharing opening, and the width of the second peep-proof opening is smaller than that of the second sharing opening.
4. The display panel of claim 3, wherein the orthographic projection of the first privacy opening on the substrate coincides with the orthographic projection of the second privacy opening on the substrate, or wherein the orthographic projection of the first privacy opening on the substrate covers the orthographic projection of the second privacy opening on the substrate; The front projection of the first shared opening on the substrate coincides with the front projection of the second shared opening on the substrate, or the front projection of the second shared opening on the substrate covers the front projection of the first shared opening on the substrate.
5. The display panel of claim 3, wherein the light modulation film layer further comprises a plurality of lens structures and a second organic layer; The lens structures are arranged in one-to-one correspondence with the second peep-proof openings; the lens structures are arranged on one side of the second black matrix far away from the substrate and at least partially positioned in the second peep-proof opening, and orthographic projection of the lens structures on the substrate covers orthographic projection of the second peep-proof opening corresponding to the orthographic projection of the lens structures on the substrate; The second organic layer is positioned on one side of the plurality of lens structures away from the substrate, and covers the lens structures and the second black matrix; the refractive index of the lens structure is greater than the refractive index of the second organic layer.
6. The display panel according to claim 1, wherein the arrangement of the peep-proof sub-pixels and the sharing sub-pixels of the plurality of pixel units is the same; The number of peep-proof sub-pixels of each pixel unit is one or more.
7. A method for manufacturing a display panel, characterized by being used for manufacturing the display panel according to any one of claims 1 to 6, comprising: providing a substrate; preparing a driving circuit layer on a substrate, wherein the driving circuit layer comprises a peep-proof driving circuit and a sharing driving circuit; Preparing a third partition structure, a peep-proof anode layer and a shared anode layer on the driving circuit layer, wherein the peep-proof anode layer comprises a plurality of peep-proof anodes arranged at intervals; The anti-peeping anode structure comprises an anti-peeping anode layer, a shared anode layer, a luminous functional layer and a luminous layer, wherein the luminous functional layer comprises a plurality of pixel units, each pixel unit comprises an anti-peeping sub-pixel and a shared sub-pixel; the orthographic projection of the light modulation film layer on the substrate covers the orthographic projection of the peep-proof sub-pixel and the sharing sub-pixel on the substrate; the preparation of the third partition structure, the peep-proof anode layer and the shared anode layer on the driving circuit layer comprises the following steps: Preparing a peep-proof anode layer on the driving circuit layer; preparing a fourth organic film layer on the peep-proof anode layer; preparing a fourth passivation layer on the fourth organic film layer; Preparing a shared anode layer on the fourth passivation layer; preparing a fifth organic film layer on the shared anode layer, and patterning the fifth organic film layer to form a fifth barrier layer, wherein the shared anode, the fourth passivation layer and the fourth organic film layer are partially exposed; And etching the fourth organic film layer to form a fourth pixel limiting layer, a fifth pixel limiting layer and a third partition structure.
8. A display device comprising the display panel according to any one of claims 1 to 6.

Description

Display panel, preparation method thereof and display device Technical Field The invention relates to the technical field of display, in particular to a display panel, a preparation method thereof and a display device. Background With the wider application of display devices, privacy of the display devices is increasingly emphasized. In the related art, an externally hung peep-proof film is generally used, when the privacy of a screen is required to be protected, the peep-proof film is manually hung in front of a display screen, and when the privacy of the screen is not required to be protected, the peep-proof film is manually taken down, so that the peep-proof film is inconvenient to use. Disclosure of Invention The embodiment of the invention aims to provide a display panel, a preparation method thereof and a display device, which can meet the display requirements of peep prevention or non-peep prevention without externally hanging a peep prevention film, and are convenient to use. The specific technical scheme is as follows: An embodiment of a first aspect of the present application provides a display panel, including a substrate, a light-emitting functional layer, a peep-proof anode layer, a shared anode layer, a driving circuit layer, and a light modulation film layer. The light-emitting functional layer comprises a plurality of pixel units, each pixel unit comprises a peep-proof sub-pixel and a sharing sub-pixel, the peep-proof anode layer is arranged between the substrate and the light-emitting functional layer, the peep-proof anode layer comprises a plurality of peep-proof anodes arranged at intervals, the peep-proof anodes are arranged in one-to-one correspondence with the peep-proof sub-pixels, the sharing anode layer is arranged between the substrate and the light-emitting functional layer, the sharing anode layer comprises a plurality of sharing anodes arranged at intervals, the sharing anodes are arranged in one-to-one correspondence with the sharing sub-pixels, the driving circuit layer is arranged between the substrate and the peep-proof anode layer, the driving circuit layer comprises a peep-proof driving circuit and a sharing driving circuit, the peep-proof driving circuit is electrically connected with the peep-proof anode, the sharing driving circuit is electrically connected with the light modulation layer, the sharing anode layer is arranged on one side of the light-emitting functional layer, which is far away from the substrate, and the sharing anode layer covers the orthographic projection sub-pixels on the substrate. In some embodiments of the present application, the privacy anode and the shared anode are disposed at an orthographic projection interval on the substrate; the peep-proof anode layer and the shared anode layer are arranged on the same layer, or the shared anode layer is positioned on one side of the peep-proof anode layer far away from the substrate. In some embodiments of the application, the privacy anode layer and the shared anode layer are arranged on the same layer, and the display panel further comprises a first pixel limiting layer; The first pixel limiting layer is arranged between the peep-proof anode layer and the shared anode layer and the light modulation film layer; each pixel opening is divided into a peep-proof pixel opening and a sharing pixel opening by a first partition structure; The peep-proof pixel opening enables the peep-proof anode part to be exposed, the peep-proof sub-pixel is arranged in the peep-proof pixel opening, the sharing pixel opening enables the sharing anode part to be exposed, and the sharing sub-pixel is arranged in the sharing pixel opening. In some embodiments of the present application, the first partition structure includes a first passivation layer, a first barrier layer, and a second passivation layer sequentially stacked in a direction away from the substrate; The first barrier layer and the first pixel limiting layer are of an integral structure; The first barrier layer is retracted inwards relative to the first passivation layer and the second passivation layer in the circumferential direction to form an undercut structure, and the undercut structure enables the light-emitting functional layer to be disconnected at the first partition structure. In some embodiments of the application, the privacy anode layer and the shared anode layer are arranged on the same layer, and the display panel further comprises a second pixel limiting layer and a third pixel limiting layer which are arranged in a stacked manner; The second pixel limiting layer is arranged between the peep-proof anode layer and the shared anode layer and the light modulation film layer; the third pixel defining layer is disposed between the second pixel defining layer and the light modulation film layer; The second pixel limiting layer and the third pixel limiting layer are provided with a plurality of pixel openings penetrating through the second pixel limiting