CN116322195A

CN116322195A - Display panel, manufacturing method thereof and display device

Info

Publication number: CN116322195A
Application number: CN202211715231.1A
Authority: CN
Inventors: 周婷; 王海亮; 李静; 吴来弟; 穆琦; 黄添钧; 袁海江
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-23
Anticipated expiration: 2042-12-28
Also published as: CN116322195B

Abstract

The application belongs to the field of display, and in particular relates to a display panel and a manufacturing method thereof, and a display device, wherein the display panel comprises a substrate base plate, a driving backboard, an anode layer, a pixel definition layer, a light-emitting layer, a cathode layer and a shading layer which are sequentially formed, the pixel definition layer is provided with a plurality of pixel areas which are arranged at intervals, the orthographic projection shapes and sizes of the pixel areas on the substrate base plate are the same, part of the pixel areas comprise a display pixel area and a peep-proof pixel area, the light-emitting layer comprises a plurality of sub-pixels with different colors, part of the sub-pixels comprise a display sub-pixel and a peep-proof sub-pixel, the display sub-pixel is formed in the display pixel area, and the peep-proof sub-pixel is formed in the peep-proof pixel area. In the application, the orthographic projection shape and the orthographic projection size of each pixel area on the substrate are the same, and a plurality of sub-pixels can share one set of mask plate for evaporation through a mode of translating the mask plate, so that the manufacturing cost of the display panel is reduced.

Description

Display panel, manufacturing method thereof and display device

Technical Field

The application belongs to the field of display, and particularly relates to a display panel, a manufacturing method thereof and a display device.

Background

An OLED (organic light-Emitting Diode) display panel has the advantages of light weight, high brightness, low power consumption, fast response, high definition, wide color gamut, and the like, and is increasingly in the display field.

The active light emitting characteristic of the organic light emitting diode enables the OLED display panel to have a wider visual angle, the visual angle can reach 170 degrees generally, but people can enjoy the visual experience brought by a large visual angle, and meanwhile, the visual angle of the display panel is sometimes hoped to be adjustable and small, so that business confidentiality and personal privacy are effectively protected, and business loss or embarrassment caused by screen information leakage is avoided.

The existing peep-proof display panel can only be torn away from the peep-proof film when the peep-proof film is not needed, and the peep-proof function is inconvenient to switch. In order to solve the problem that the peep-proof function of the switch is inconvenient, peep-proof pixels are arranged in some display panels, after the peep-proof pixels are turned on, the display panels can normally display in front view, and light emitted by the peep-proof pixels interferes with light of the display pixels in oblique view, so that peep-proof in oblique view is realized. However, the peep-proof pixel and the display pixel need to be evaporated by using different Fine Metal Masks (FMMs), resulting in a significant increase in manufacturing cost of the display panel.

Disclosure of Invention

The invention provides a display panel, a manufacturing method thereof and a display device, so that peep-proof pixels and display pixels with different colors are evaporated by adopting the same fine metal mask, and the manufacturing cost of the display panel is reduced.

In order to achieve the above object, the present application provides a display panel, including a substrate board and a driving back plate, the driving back plate is disposed on one side of the substrate board, the display panel further includes:

the anode layer comprises a plurality of anodes which are arranged at intervals, and the anode layer is formed on one side of the driving backboard away from the substrate base plate;

the pixel definition layer is formed on one side of the anode layer far away from the substrate base plate, the pixel definition layer is provided with a plurality of pixel areas which are arranged at intervals, the orthographic projection shapes and the orthographic projection sizes of the pixel areas on the substrate base plate are the same, the pixel areas comprise display pixel areas, at least part of the pixel areas further comprise peep-proof pixel areas and spacing areas, and the spacing areas are positioned between the peep-proof pixel areas and the display pixel areas;

the light-emitting layer comprises a plurality of pixel units, wherein each pixel unit comprises a plurality of sub-pixels with different colors, each sub-pixel comprises a display sub-pixel, at least part of the sub-pixels further comprise peep-proof sub-pixels, the display sub-pixels are formed in the display pixel area, the peep-proof sub-pixels are formed in the peep-proof pixel area, each display sub-pixel is correspondingly connected with one anode, and each peep-proof sub-pixel is correspondingly connected with one anode;

a cathode layer formed on a side of the light-emitting layer away from the substrate base plate;

the shading layer is formed on one side, far away from the substrate, of the cathode layer, the shading layer comprises a plurality of shading units, the shading units are in one-to-one correspondence with the peep-proof sub-pixels, and orthographic projection of the peep-proof sub-pixels in the thickness direction of the display panel is located in the shading units corresponding to the peep-proof sub-pixels.

Optionally, the pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel;

the red display sub-pixel, the green display sub-pixel and the blue sub-pixel are arranged in the display pixel area in a one-to-one correspondence manner, and the red peep-proof sub-pixel and the green peep-proof sub-pixel are formed in the peep-proof pixel area in a one-to-one correspondence manner.

Optionally, the red display sub-pixel and the red peep-proof sub-pixel are arranged in a second direction, and the green display sub-pixel and the green peep-proof sub-pixel are arranged in the second direction, wherein:

the red sub-pixel, the green sub-pixel and the blue sub-pixel in the pixel unit are sequentially arranged in a first direction perpendicular to the second direction, and the red peep-proof sub-pixel and the green peep-proof sub-pixel in the same pixel unit are adjacently arranged; or (b)

The red sub-pixels, the blue sub-pixels and the green sub-pixels in the pixel units are sequentially arranged in a first direction perpendicular to the second direction, and the red peep-proof sub-pixels and the green peep-proof sub-pixels in the adjacent pixel units are adjacently arranged.

Optionally, the adjacent red peep-proof sub-pixels are connected with the adjacent green peep-proof sub-pixels, and the anodes corresponding to the adjacent red peep-proof sub-pixels are connected with the anodes corresponding to the green peep-proof sub-pixels.

Optionally, the anodes corresponding to all the red peep-proof sub-pixels or the anodes corresponding to all the green peep-proof sub-pixels are connected.

Optionally, the driving backboard includes a plurality of thin film transistors, and the corresponding anode of the red peep-proof sub-pixel and the corresponding anode of the green peep-proof sub-pixel are connected with the thin film transistors in a one-to-one correspondence.

Optionally, the light shielding unit includes a first electrode, a color-changing structural layer and a second electrode formed in sequence, the first electrode is arranged at a side of the cathode layer away from the substrate at intervals, and the second electrode is arranged at a side of the color-changing structural layer away from the substrate;

the display panel is provided with a peep-proof mode, when the peep-proof mode is started, the color-changing structural layer can be used for shading light, and when the peep-proof mode is closed, the color-changing structural layer can be used for transmitting light.

Optionally, the display panel further includes an encapsulation layer, a color blocking layer, and an anti-reflection layer, where the encapsulation layer is formed on a side of the cathode layer away from the substrate, and the light shielding layer is formed on a side of the encapsulation layer away from the substrate;

the color resistance layer comprises a plurality of color resistances, the orthographic projections of the display sub-pixels on the substrate are located in orthographic projections of the color resistances on the substrate in a one-to-one correspondence mode, the shading layer further comprises a black matrix, the black matrix is located around the color resistances, and the anti-reflection layer is formed on one side, far away from the substrate, of the color resistance layer.

The application also provides a manufacturing method of the display panel, which comprises the following steps:

sequentially forming a driving backboard and an anode layer on a substrate, wherein the anode layer comprises a plurality of anodes which are arranged at intervals;

forming a pixel definition layer on one side of the anode layer far away from the substrate, wherein the pixel definition layer comprises a plurality of pixel areas which are arranged at intervals, the orthographic projection shape and the orthographic projection size of each pixel area on the substrate are the same, each pixel area comprises a display pixel area, at least part of the pixel areas also comprise peep-proof pixel areas and interval areas, and the interval areas are positioned between the peep-proof pixel areas and the display pixel areas;

forming a light-emitting layer on one side of the pixel definition layer far away from the substrate, wherein the light-emitting layer comprises a plurality of sub-pixels with different colors, the sub-pixels are sequentially formed in the pixel area through a translation mask, each sub-pixel comprises a display sub-pixel, at least part of the sub-pixels further comprise peep-proof sub-pixels, the display sub-pixels are formed in the display pixel area, the peep-proof sub-pixels are formed in the peep-proof pixel area, and the display sub-pixels and the peep-proof sub-pixels are in one-to-one correspondence with the anode;

forming a cathode layer on one side of the light-emitting layer far away from the substrate base plate;

and forming a shading layer on one side of the cathode layer far away from the substrate, wherein the shading layer comprises a shading unit, and orthographic projection of the peep-proof sub-pixel in the thickness direction of the display panel is positioned in the shading unit.

The application also provides a display device, comprising:

a display panel;

and the main board is connected with the display panel.

The display panel and the manufacturing method thereof and the display device have the following beneficial effects:

in this application, display panel is including the substrate base plate that forms in proper order, the drive backplate, the anode layer, pixel definition layer, the luminescent layer, cathode layer and shading layer, pixel definition layer has the pixel district that a plurality of intervals set up, the orthographic projection shape of each pixel district on substrate base plate, the size is the same, partial pixel district is including showing pixel district and peep-proof pixel district, the luminescent layer includes the sub-pixel of a plurality of different colours, partial sub-pixel is including showing sub-pixel and peep-proof sub-pixel, show sub-pixel forms in showing the pixel district, peep-proof sub-pixel forms in peep-proof pixel district. In the application, the orthographic projection shape and the orthographic projection size of each pixel area on the substrate are the same, and a plurality of sub-pixels can share one set of mask plate for evaporation through a mode of translating the mask plate, so that the manufacturing cost of the display panel is reduced.

Other features and advantages of the present application will be apparent from the following detailed description, or may be learned in part by the practice of the application.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a sectional view of a display panel in a first embodiment of the present application.

Fig. 2 is a schematic structural diagram of a pixel unit according to an embodiment of the present application.

Fig. 3 is a schematic view of a display panel according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a display panel in a second embodiment of the present application.

Fig. 5 is a flowchart of a method for manufacturing a display panel in the third embodiment of the present application.

Fig. 6 is a flowchart of a method for manufacturing a display panel in the third embodiment of the present application.

Reference numerals illustrate:

100. a substrate base; 200. a drive back plate;

310. an anode layer; 311. an anode; 320. a pixel definition layer; p1, a first pixel region; p2, the second pixel area; p3, a third pixel region; 321. a display pixel region; 322. a peep-proof pixel region; 323. a spacer; 330. a light emitting layer; 331. displaying the sub-pixels; 332. peep-proof sub-pixels; 340. a cathode layer; 350. an encapsulation layer; 351. a first inorganic encapsulation layer; 352. an organic encapsulation layer; 353. a second inorganic encapsulation layer; 360. a light shielding layer; 361. a light shielding unit; 3611. a first electrode; 3612. a color-changing structural layer; 3613. a second electrode; 370. a color resist layer; 380. an anti-reflection layer;

10. a display panel; 20. and a main board.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the aspects of the application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

The present application is further described in detail below with reference to the drawings and specific examples. It should be noted that the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.

Example 1

Referring to fig. 1 and 2, the display panel in this embodiment includes a substrate base plate 100 and a driving backplate 200, and the driving backplate 200 is disposed on one side of the substrate base plate 100. The substrate 100 includes a glass substrate or a polyimide (Pi) substrate, and the driving backplate 200 includes a TFT (thin film transistor) substrate. The display panel further includes an anode layer 310, a pixel defining layer 320, a light emitting layer 330, a cathode layer 340, and a light shielding layer 360. The anode layer 310 is formed on a side of the driving backplate 200 away from the substrate 100, and the anode layer 310 includes a plurality of anodes 311 arranged at intervals.

The pixel defining layer 320 is formed on a side of the anode layer 310 away from the substrate 100, and the pixel defining layer 320 has a plurality of pixel regions disposed at intervals, where the orthographic projection shape and size of each pixel region on the substrate 100 are the same. The pixel area includes a display pixel area 321, at least a part of the pixel area further includes a peep-proof pixel area 322 and a spacer area 323, and the spacer area 323 is located between the peep-proof pixel area 322 and the display pixel area 321. The light emitting layer 330 includes a plurality of pixel units including a plurality of sub-pixels of different colors.

The pixel unit includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and the pixel areas corresponding to each pixel unit are a first pixel area P1, a second pixel area P2, and a third pixel area P3, where the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are formed in one-to-one correspondence with the first pixel area P1, the second pixel area P2, and the third pixel area P3. The first pixel area P1 includes a display pixel area 321, a spacing area 323 and a peep-proof pixel area 322, and the second pixel area P2 includes only the display pixel area 321, and the projection shapes and sizes of the pixel areas in the thickness direction of the display panel are the same, so that the display pixel area 321 of the second pixel area P2 is larger than the display pixel area 321 corresponding to the first pixel area P1.

The sub-pixels include a display sub-pixel 331, and at least some of the sub-pixels further include a privacy sub-pixel 332. For example, the blue subpixel B includes only the blue display subpixel 331, and the red subpixel R includes the red display subpixel 331 and the red peep-proof subpixel 332. The display sub-pixels 331 are formed in the display pixel area 321, the peep-proof sub-pixels 332 are formed in the peep-proof pixel area 322, and the display sub-pixels 331 and the peep-proof sub-pixels 332 are connected with the anode 311 in a one-to-one correspondence manner, i.e. each display sub-pixel 331 is correspondingly connected with one anode 311, and each peep-proof sub-pixel 332 is correspondingly connected with one anode 311.

The cathode layer 340 is formed on a side of the light emitting layer 330 remote from the substrate 100, and the light shielding layer 360 is formed on a side of the cathode layer 340 remote from the substrate 100. The light shielding layer 360 includes a plurality of light shielding units 361, the light shielding units 361 are in one-to-one correspondence with the peep-proof sub-pixels 332, and orthographic projections of the peep-proof sub-pixels 332 in the thickness direction of the display panel are located in the corresponding light shielding units 361.

Referring to fig. 3, the display panel has a peep-proof mode, when the peep-proof mode is closed, the display sub-pixel 331 is normally displayed, the peep-proof sub-pixel 332 is closed, and the display panel can clearly display in front view or oblique view. When the peep-proof mode is started, the peep-proof sub-pixel 332 is started, the forward light of the peep-proof sub-pixel 332 is blocked by the light shielding unit 361, the forward light of the display sub-pixel 331 is not interfered, and the display panel can clearly display in front view; the oblique light of the peep-proof sub-pixel 332 is not blocked by the light shielding unit 361, the oblique light of the display sub-pixel 331 is mixed with the oblique light of the peep-proof sub-pixel 332, and the display panel cannot clearly display under oblique viewing, so that the peep-proof function can be realized.

In the OLED display panel, the organic material forming the blue sub-pixel B has low luminous efficiency, and the organic material forming the red and green sub-pixels R and G has high luminous efficiency, and the blue sub-pixel B is generally designed to be larger than the red and green sub-pixels R and G. Meanwhile, in order to reduce the influence of the peep-proof sub-pixel 332 on the aperture ratio of the display panel, the peep-proof sub-pixel 332 is designed smaller than the display sub-pixel 331, so that the display sub-pixel 331 and the peep-proof sub-pixel 332 of red, green and blue colors need to be evaporated by adopting different masks, and the manufacturing cost of the display panel is greatly increased.

In this application, the pixel defining layer 320 of the display panel includes a plurality of pixel areas, red, green and blue sub-pixels are formed in the plurality of pixel areas in a one-to-one correspondence manner, a part of pixel areas include a display pixel area 321 and a peep-proof pixel area 322, a part of sub-pixels include a display sub-pixel 331 and a peep-proof sub-pixel 332, the display sub-pixel 331 is formed in the display pixel area 321, the peep-proof sub-pixel 332 is formed in the peep-proof pixel area 322, and since the orthographic projection shape and the size of each pixel area on the substrate 100 are the same, the red, green and blue sub-pixels can share one set of mask for vapor deposition in a translation manner, thereby reducing the manufacturing cost of the display panel.

Referring to fig. 1 and 2, the pixel unit includes red, green and blue sub-pixels R, G and B formed in one-to-one correspondence with the first, second and third pixel regions P1, P2 and P3.

The red subpixel R includes a red display subpixel 331 and a red peep-proof subpixel 332, where the red display subpixel 331 and the red peep-proof subpixel 332 are disposed in the display pixel area 321 and the peep-proof pixel area 322 of the first pixel area P1 in a one-to-one correspondence manner; the green sub-pixel G includes a green display sub-pixel 331 and a green peep-proof sub-pixel 332, where the green display sub-pixel 331 and the green peep-proof sub-pixel 332 are disposed in the display pixel area 321 and the peep-proof pixel area 322 of the second pixel area P2 in a one-to-one correspondence manner; the blue sub-pixel B is correspondingly disposed in the display pixel region 321 of the third pixel region P3.

That is, the blue sub-pixel B is used as a display in its entirety, the red sub-pixel R is used as a display portion for peep prevention, and the green sub-pixel G is used as a display portion for peep prevention in its entirety.

Since the organic material forming the blue sub-pixel B has low luminous efficiency and the organic material forming the red sub-pixel R and the green sub-pixel G has high luminous efficiency, the blue sub-pixel B is used for display, and the red sub-pixel R and the green sub-pixel G are used for display, so the design is beneficial to improving the color cast of the display panel. Meanwhile, the red sub-pixel R and the green sub-pixel G are both partially used as peep prevention, the light rays of the red peep prevention sub-pixel 332 and the green peep prevention sub-pixel 332 can be mixed into yellow light rays, and the yellow light rays are used for mixing light to achieve better peep prevention effect than red, green and blue monochromatic light rays.

As shown in fig. 1 and 2, in the pixel unit, the red, blue, and green sub-pixels R, B, and G are sequentially arranged in the first direction. The red display sub-pixel 331 and the red peep-preventing sub-pixel 332 are arranged in a second direction, the green display sub-pixel 331 and the green peep-preventing sub-pixel 332 are arranged in the second direction, and the first direction is perpendicular to the second direction. The red peep-proof sub-pixel 332 and the green peep-proof sub-pixel 332 in the adjacent pixel units are adjacently arranged.

When the red peep-proof sub-pixel 332 and the green peep-proof sub-pixel 332 are adjacently arranged, the light mixing effect of the red peep-proof sub-pixel 332 and the green peep-proof sub-pixel 332 is better, and the peep-proof effect of the display panel is improved.

In the pixel unit, the red, blue, and green sub-pixels R, B, and G are sequentially arranged in the first direction, but the present invention is not limited thereto, and the red, green, and blue sub-pixels R, G, and B may be sequentially arranged in the first direction, as the case may be. When the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are sequentially arranged in the first direction, the red peep-preventing sub-pixel 332 and the green peep-preventing sub-pixel 332 are adjacently disposed in the same pixel unit.

Referring to fig. 1 and 2, adjacent red peep-proof sub-pixels 332 are connected to green peep-proof sub-pixels 332, and anodes 311 corresponding to the adjacent red peep-proof sub-pixels 332 are connected to anodes 311 corresponding to the green peep-proof sub-pixels 322.

Specifically, the pixel defining layer 320 includes a via hole, the via hole is connected to the anode 311, and the peep-proof pixel area 322 includes a via hole area. The via holes corresponding to the red peep-proof sub-pixels 332 and the via holes corresponding to the green peep-proof sub-pixels 332 can be communicated, the red sub-pixels R and the green sub-pixels G are evaporated, organic materials are diffused in the via hole areas, and the connection of the red peep-proof sub-pixels 332 and the green peep-proof sub-pixels 332 can be achieved. When the red peep-preventing sub-pixel 332 is connected with the green peep-preventing sub-pixel 332, the anode 311 corresponding to the red peep-preventing sub-pixel 332 and the anode 311 corresponding to the green peep-preventing sub-pixel 322 can also be connected, so that the red peep-preventing sub-pixel 332 and the green peep-preventing sub-pixel 332 are simultaneously turned on or simultaneously turned off.

The adjacent red peep-proof sub-pixels 332 are connected with the green peep-proof sub-pixels 332, and the light rays of the red peep-proof sub-pixels 332 and the green peep-proof sub-pixels 332 can be mixed into yellow light rays, so that the effect is better.

It should be noted that, the adjacent red peep-preventing sub-pixels 332 and the green peep-preventing sub-pixels 332 may be connected, but not limited thereto, and the adjacent red peep-preventing sub-pixels 332 and the green peep-preventing sub-pixels 332 may also form a space through the pixel defining layer 320, which may be specific as occasion demands.

Referring to fig. 1 and 2, anodes 311 corresponding to all red peep-proof sub-pixels 332 or anodes 311 corresponding to all green peep-proof sub-pixels 332 are connected. That is, the anodes 311 of all the peep-proof sub-pixels 332 may be connected as one body.

When the anodes 311 of all the peep-proof sub-pixels 332 can be connected into a whole, the manner of controlling all the peep-proof sub-pixels 332 to be simultaneously turned on or off is simpler, and the driving circuit of the display panel can be simplified.

Referring to fig. 1 and 2, the display panel further includes an encapsulation layer 350, the encapsulation layer 350 is formed on a side of the cathode layer 340 remote from the substrate 100, and a light shielding layer 360 is formed on a side of the encapsulation layer 350 remote from the substrate 100. The encapsulation layer 350 includes a first inorganic encapsulation layer 351, an organic encapsulation layer 352, and a second inorganic encapsulation layer 353, the first inorganic encapsulation layer 351 being formed on a side of the cathode layer 340 remote from the substrate 100, the organic encapsulation layer 352 being formed on a side of the first inorganic encapsulation layer 351 remote from the substrate 100, the second inorganic encapsulation layer 353 being formed on a side of the organic encapsulation layer 352 remote from the substrate 100.

The encapsulation layer 350 is formed between the cathode layer 340 and the light shielding layer 360, and prevents the light emitting layer 330 formed of the organic light emitting material from being disabled by intrusion of water oxygen. The light shielding layer 360 is formed on the side of the encapsulation layer 350 away from the substrate 100, so that the distance between the light shielding layer 360 and the light emitting layer 330 can be increased, and the light emitting angle of the peep-preventing sub-pixel 332 can be conveniently adjusted.

Referring to fig. 1 and 2, the display panel further includes a color blocking layer 370 and an anti-reflection layer 380. The color resist layer 370 includes a plurality of color resists, which are red, green set, and blue, respectively. The front projection of the display sub-pixel 331 on the substrate 100 is located in the front projection of the color resistor on the substrate 100, that is, the front projection of the red sub-pixel R on the substrate 100 is located in the front projection of the red resistor on the substrate 100, the front projection of the green sub-pixel G on the substrate 100 is located in the front projection of the green resistor on the substrate 100, and the front projection of the blue sub-pixel B on the substrate 100 is located in the front projection of the blue resistor on the substrate 100. The light shielding layer 360 further includes a black matrix around the color resist, and an anti-reflection layer 380 is formed on a side of the color resist layer 370 remote from the substrate 100.

In order to improve the contrast ratio of the display device and realize an integral black effect, a Polarizer (POL) is generally adopted in an OLED display panel, and the polarizer can effectively reduce the reflection intensity of external environment light on a screen. However, the light transmittance of the polarizer is generally only about 44%, and more power consumption is required to achieve higher light-emitting brightness. In addition, the polaroid has larger thickness and crisp material, and is not beneficial to the development of dynamic bending products.

The display panel in this embodiment includes an anti-reflection layer 380, where the anti-reflection layer 380 can reduce the reflection intensity of the external ambient light on the screen. In addition, the anti-reflection layer 380 also has a certain blocking effect, so that the OLED display panel can be protected. The reflection intensity of external environment light on the screen is reduced by adopting the anti-reflection layer 380, external light is blocked by adopting the color resistance layer 370, and the light emitted by the display sub-pixel 331 is filtered, so that the polaroid of the OLED display panel can be eliminated, the thickness of the functional layer is greatly reduced, the light emitting rate is greatly increased from 44% to 80%, the light emitting brightness is greatly increased, and the power consumption of the OLED display panel is reduced.

Example two

The main difference between the second embodiment and the first embodiment is that the peep-proof sub-pixel 332 is controlled in different manners.

Referring to fig. 1 and 4, the driving backplate 200 includes a plurality of thin film transistors, and the corresponding anode 311 of the red peep-preventing sub-pixel 332 and the corresponding anode 311 of the green peep-preventing sub-pixel 332 are connected to the thin film transistors in a one-to-one correspondence. That is, each of the red and

green privacy subpixels

332 and 332 may be individually turned on or off.

When each red peep-proof sub-pixel 332 and each green peep-proof sub-pixel 332 can be independently turned on or turned off, in the peep-proof mode, a part of the red peep-proof sub-pixels 332 and the green peep-proof sub-pixels 332 can be controlled to be turned off according to the display picture, so that the power consumption of the display panel is reduced. Meanwhile, the brightness of the red peep-proof sub-pixel 332 and the green peep-proof sub-pixel 332 can be respectively adjusted according to the color of the display picture, so that the peep-proof mixed-color light is close to the display light, and a better peep-proof effect is achieved.

Referring to fig. 4, the light shielding unit 361 includes a first electrode 3611, a color-changing structural layer 3612, and a second electrode 3613 formed in sequence, the first electrode 3611 is disposed at a side of the cathode layer 340 away from the substrate 100 at intervals, and the second electrode 3613 is disposed at a side of the color-changing structural layer 3612 away from the substrate 100. The display panel has a peep-proof mode, when the peep-proof mode is opened, voltage is applied between the first electrode 3611 and the second electrode 3613, the color-changing structural layer 3612 becomes opaque and can shade light, and when the peep-proof mode is closed, the color-changing structural layer 3612 becomes transparent and can transmit light.

When the peep-proof mode is opened, the shading unit 361 can shade light, when the peep-proof mode is closed, the shading unit 361 can transmit light, and when the peep-proof mode is closed, the red peep-proof sub-pixel 332 and the green peep-proof sub-pixel 332 can be used as the display sub-pixel 331 to participate in display. In the case where the red peep-preventing sub-pixel 332 and the green peep-preventing sub-pixel 332 participate in display, the display panel having the peep-preventing sub-pixel 332 provided therein has little loss in aperture ratio as compared with the display panel having the conventional red-green-blue three-color display sub-pixel 331.

Example III

Referring to fig. 1 and 5, the manufacturing method of the display panel includes the following steps:

s100: sequentially forming a driving backplate 200 and an anode layer 310 on a substrate 100, the anode layer 310 including a plurality of anodes 311 arranged at intervals;

s200: forming a pixel defining layer 320 on one side of the anode layer 310 far away from the substrate 100, wherein the pixel defining layer 320 comprises a plurality of pixel areas arranged at intervals, the orthographic projection shape and the orthographic projection size of each pixel area on the substrate 100 are the same, each pixel area comprises a display pixel area 321, at least part of the pixel areas also comprise a peep-proof pixel area 322 and a spacing area 323, and the spacing area 323 is positioned between the peep-proof pixel area 322 and the display pixel area 321;

s300: forming a light emitting layer 330 on one side of the pixel defining layer 320 far away from the substrate 100, wherein the light emitting layer 330 comprises a plurality of sub-pixels with different colors, the sub-pixels are sequentially formed in a pixel area through a translation mask, each sub-pixel comprises a display sub-pixel 331, at least part of the sub-pixels further comprise a peep-proof sub-pixel 332, the display sub-pixel 331 is formed in a display pixel area 321, the peep-proof sub-pixel 332 is formed in a peep-proof pixel area 322, and the display sub-pixels 331 and the peep-proof sub-pixels 332 are connected with the anode 311 in a one-to-one correspondence manner;

s400: forming a cathode layer 340 on a side of the light emitting layer 330 remote from the substrate 100;

s500: a light shielding layer 360 is formed on a side of the cathode layer 340 away from the substrate 100, the light shielding layer 360 includes a light shielding unit 361, and an orthographic projection of the peep-proof sub-pixel 331 in a thickness direction of the display panel is located in the light shielding unit 361.

It should be noted that the display panel may further include an encapsulation layer 350, a color blocking layer 370, and an anti-reflection layer 380. In step S500, before forming the light shielding layer 360, the encapsulation layer 350 is formed on the side of the cathode layer 340 away from the substrate 100, and the light shielding layer 360 is formed on the side of the encapsulation layer 350 away from the substrate 100, and the light shielding layer 360 includes the black matrix and the light shielding unit 361. The color resist layer 370 includes a plurality of color resists, and the color resists are located in the region surrounded by the black matrix. After the light shielding layer 360 and the color resist layer 370 are sequentially formed, the anti-reflection layer 380 is formed.

In this embodiment, the driving backplate 200, the anode layer 310, the pixel defining layer 320, the light emitting layer 330, the cathode layer 340 and the light shielding layer 360 are sequentially formed on the substrate 100, the pixel defining layer 320 has a plurality of pixel regions disposed at intervals, the orthographic projection shapes and sizes of the pixel regions on the substrate 100 are the same, a part of the pixel regions include a display pixel region 321 and a peep-proof pixel region 322, the light emitting layer 330 includes a plurality of sub-pixels with different colors, a part of the sub-pixels include a display sub-pixel 331 and a peep-proof sub-pixel 332, the display sub-pixel 331 is formed in the display pixel region 321, and the peep-proof sub-pixel 332 is formed in the peep-proof pixel region 322. In the application, the orthographic projection shape and size of each pixel area on the substrate 100 are the same, and a plurality of sub-pixels can share one set of mask for evaporation through a mode of translating the mask, so that the manufacturing cost of the display panel is reduced.

Example IV

Referring to fig. 6, the present application further provides a display device, where the display device includes a display panel 10 and a main board 20, and the main board 20 is connected to the display panel 10 and is used for driving the display panel 10 to display a picture. The display panel 10 includes the display panel 10 disclosed in the first and second embodiments.

The display device includes a display panel 10, the display panel includes a substrate 100, a driving backboard 200, an anode layer 310, a pixel definition layer 320, a light emitting layer 330, a cathode layer 340 and a shading layer 360 formed in sequence, the pixel definition layer 320 has a plurality of pixel areas arranged at intervals, the orthographic projection shapes and sizes of the pixel areas on the substrate 100 are the same, a part of the pixel areas include a display pixel area 321 and a peep-proof pixel area 322, the light emitting layer 330 includes a plurality of sub-pixels with different colors, a part of the sub-pixels include a display sub-pixel 331 and a peep-proof sub-pixel 332, the display sub-pixel 331 is formed in the display pixel area 321, and the peep-proof sub-pixel 332 is formed in the peep-proof pixel area 322. In the application, the orthographic projection shape and size of each pixel area on the substrate 100 are the same, and a plurality of sub-pixels can share one set of mask for evaporation through a mode of translating the mask, so that the manufacturing cost of the display panel is reduced.

The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present specification, reference to the terms "some embodiments," "exemplary," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the embodiments by one of ordinary skill in the art within the scope of the application, and therefore all changes and modifications that fall within the spirit and scope of the invention as defined by the claims and the specification of the application are intended to be covered thereby.

Claims

1. The utility model provides a display panel, includes substrate base plate and drive backplate, drive backplate sets up in substrate base plate one side, its characterized in that, display panel still includes:

2. The display panel of claim 1, wherein the pixel unit includes red, green, and blue sub-pixels;

3. The display panel of claim 2, wherein the red display sub-pixel and the red privacy sub-pixel are arranged in a second direction, the green display sub-pixel and the green privacy sub-pixel are arranged in the second direction, wherein:

4. The display panel of claim 3, wherein adjacent red privacy subpixels are connected to the green privacy subpixels, and adjacent anodes corresponding to the red privacy subpixels are connected to anodes corresponding to the green privacy subpixels.

5. The display panel according to claim 4, wherein the anodes corresponding to all the red peep-preventing sub-pixels or the anodes corresponding to all the green peep-preventing sub-pixels are connected.

6. The display panel of claim 3, wherein the driving back plate includes a plurality of thin film transistors, and the anodes of the red and green peep-preventing sub-pixels are connected to the thin film transistors in one-to-one correspondence.

7. The display panel according to claim 6, wherein the light shielding unit comprises a first electrode, a color change structure layer and a second electrode which are sequentially formed, the first electrode is arranged at a side of the cathode layer away from the substrate at intervals, and the second electrode is arranged at a side of the color change structure layer away from the substrate;

8. The display panel according to claim 1, further comprising an encapsulation layer, a color resist layer, and an antireflection layer, wherein the encapsulation layer is formed on a side of the cathode layer away from the substrate, and the light shielding layer is formed on a side of the encapsulation layer away from the substrate;

9. A method for manufacturing a display panel, comprising:

10. A display device, comprising:

the display panel according to any one of claims 1 to 8;

and the main board is connected with the display panel.