Display panel and display device

Abstract

The present application belongs to the field of display, and specifically relates to a display panel and a display device, wherein the display panel includes a substrate, a driving circuit layer, a pixel definition layer, a light-emitting layer, an encapsulation layer, and a shading unit. The driving circuit layer and the pixel definition layer are arranged on one side of the substrate, the light-emitting layer is formed in the pixel opening area of ​​the pixel definition layer, the light-emitting layer includes a plurality of display light-emitting parts and a plurality of anti-peeping light-emitting parts, each anti-peeping light-emitting part includes two anti-peeping units arranged at intervals, the encapsulation layer is formed on the side of the pixel definition layer and the light-emitting layer away from the substrate, the plurality of shading units are arranged at intervals and formed on the side of the encapsulation layer away from the substrate, and the orthographic projection of the anti-peeping unit on the substrate is located within the orthographic projection of the shading unit on the substrate. Compared with an integral anti-peeping light-emitting part, the present application can avoid the anti-peeping light in the central area of ​​the anti-peeping light-emitting part being completely blocked by the shading unit, thereby improving the light utilization rate of the anti-peeping light-emitting part and enhancing the anti-peeping effect of the display panel.

Description

Technical Field

[0001] The present application belongs to the field of display, and specifically relates to a display panel and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) display panels offer high clarity and a wide viewing angle, typically up to 170 degrees, providing users with a better visual experience. However, users sometimes also wish to adjust the viewing angle of the display panel to a smaller size (anti-peeping) to effectively protect business secrets and personal privacy.

[0003] To achieve privacy protection, some display panels have pixel units that include display pixels and privacy pixels, with a light-shielding structure placed above the privacy pixels. In normal mode, the privacy pixels are off, allowing the display panel to display normally. In privacy mode, the privacy pixels are on, and the light-shielding structure blocks the narrow-angle light from the privacy pixels. However, the wide-angle light from the privacy pixels is not blocked, potentially interfering with the display pixels. In other words, in privacy mode, the display image within the privacy viewing angle is not disturbed, while the display image outside the privacy viewing angle is disturbed, thus achieving wide-angle privacy protection.

[0004] Organic light-emitting diodes (OLEDs) emit the brightest light at 0°, and the brightness decreases significantly as the angle increases. The light emitted by privacy pixels at small angles is blocked by the shading structure, meaning that the area with the highest brightness is obscured by the shading structure. As a result, the brightness of privacy pixels is lower outside the privacy viewing angle, affecting the privacy protection effect of the display panel. Summary of the Invention

[0005] The purpose of the present application is to provide a display panel and a display device to increase the brightness of anti-peeping pixels and enhance the anti-peeping effect of the display panel.

[0006] To achieve the above-mentioned object, the present application provides a display panel, comprising a base substrate and a driving circuit layer, wherein the driving circuit layer is arranged on one side of the base substrate, and the display panel further comprises:

[0007] A pixel definition layer is formed on a side of the driving circuit layer away from the base substrate, the pixel definition layer comprising a plurality of pixel opening areas and a pixel definition portion surrounding the pixel opening areas;

[0008] a light-emitting layer formed in the pixel opening area, the light-emitting layer including a plurality of display light-emitting portions and a plurality of anti-peeping light-emitting portions, the anti-peeping light-emitting portion including two anti-peeping units, the two anti-peeping units being spaced apart along a row direction or a column direction;

[0009] An encapsulation layer is formed on a side of the pixel definition layer and the light emitting layer away from the base substrate;

[0010] A shading unit, wherein a plurality of the shading units are arranged at intervals and formed on a side of the encapsulation layer away from the base substrate, the orthographic projection of the display light-emitting portion on the base substrate is spaced apart from the orthographic projection of the shading unit on the base substrate, and the orthographic projection of the anti-peep unit on the base substrate is located within the orthographic projection of the shading unit on the base substrate.

[0011] Optionally, the multiple display light-emitting portions include a first light-emitting portion, a second light-emitting portion, and a third light-emitting portion; the light-emitting efficiency of the first light-emitting portion is greater than the light-emitting efficiency of the second light-emitting portion, and the light-emitting efficiency of the second light-emitting portion is greater than the light-emitting efficiency of the third light-emitting portion; the display panel includes a plurality of pixel units, and the pixel unit includes one first light-emitting portion, one second light-emitting portion, and one third light-emitting portion; the first light-emitting portion and the second light-emitting portion are spaced apart along a first direction, and the first light-emitting portion and the second light-emitting portion are located on one side of the third light-emitting portion in a second direction, the second direction is perpendicular to the first direction, and in the first direction, the first light-emitting portion and the second light-emitting portion are aligned with the third light-emitting portion as a whole;

[0012] The anti-peeping luminous portion is provided in at least some of the pixel units. The anti-peeping luminous portion is provided at the junction of at least some of the adjacent display luminous portions, and an extension line of the junction line of at least some of the adjacent display luminous portions passes through the anti-peeping luminous portion.

[0013] Optionally, the two anti-peeping units of the anti-peeping luminous portion have the same luminous color, and the pixel defining portion is provided between the two anti-peeping units.

[0014] Optionally, the anti-peeping light-emitting portion is made of the same material as the first light-emitting portion or the second light-emitting portion.

[0015] Optionally, the two anti-peep units of the anti-peep luminous part have different luminous colors, the pixel definition part is arranged between the two anti-peep units, and the display panel also includes a conductor part and an eaves part, the conductor part is at least formed on the side of the pixel definition part away from the base substrate between the two anti-peep units, and the eaves part is formed on the side of the conductor part away from the base substrate, the eaves part protrudes relative to the conductor part, so that a recessed area is formed between the eaves part and the pixel definition part, the recessed area is located on the two sides of the conductor part opposite to the pixel opening area, and the eaves part is used to isolate the light-emitting layer.

[0016] Optionally, the anti-peeping unit is connected to one of the adjacent display light-emitting parts.

[0017] Optionally, at least a portion of an edge of an orthographic projection of the shading unit on the base substrate is arc-shaped, and the shape of the orthographic projection of the shading unit on the base substrate includes a circle, an ellipse or a rounded polygon.

[0018] Optionally, adjacent sides of the two shading units corresponding to the same anti-peeping light-emitting portion are straight sides or arc-shaped sides, and the two shading units are symmetrical in the row direction or the column direction; or

[0019] The adjacent sides of the two shading units corresponding to the same anti-peeping light-emitting portion are arc-shaped sides, and the adjacent arc-shaped sides of the two shading units are concentric.

[0020] Optionally, the shading unit includes a main body and an auxiliary shading part, the auxiliary shading part is located on the side of the main body away from the base substrate, the orthographic projection of the anti-peeping unit on the base substrate is located within the orthographic projection of the main body on the base substrate, the orthographic projection of the main body on the base substrate is located within the orthographic projection of the auxiliary shading part on the base substrate, the main body is used to limit the light output angle of the anti-peeping unit to form an anti-peeping viewing angle, and the auxiliary shading part is used to block the diffracted light within the anti-peeping viewing angle.

[0021] The present application also provides a display device, comprising:

[0022] the display panel;

[0023] A mainboard is connected to the display panel.

[0024] The display panel and display device disclosed in this application have the following beneficial effects:

[0025] In the present application, a display panel includes a substrate, a driving circuit layer, a pixel definition layer, a light-emitting layer, an encapsulation layer, and a shading unit. The driving circuit layer is arranged on one side of the substrate, the pixel definition layer is formed on the side of the driving circuit layer away from the substrate, the pixel definition layer includes a plurality of pixel opening areas and a pixel definition portion, the light-emitting layer is formed in the pixel opening area, the light-emitting layer includes a plurality of display light-emitting portions and a plurality of anti-peeping light-emitting portions, each anti-peeping light-emitting portion includes two anti-peeping units, and the two anti-peeping units are arranged at intervals along the row direction or the column direction. The encapsulation layer is formed on the side of the pixel definition layer and the light-emitting layer away from the substrate, and the plurality of shading units are arranged at intervals and formed on the side of the encapsulation layer away from the substrate, and the orthographic projection of the anti-peeping unit on the substrate is located within the orthographic projection of the shading unit on the substrate. Compared with an integral anti-peeping light-emitting portion, the present application can prevent the anti-peeping light in the central area of ​​the anti-peeping light-emitting portion from being completely blocked by the shading unit, thereby improving the light utilization rate and brightness of the anti-peeping light-emitting portion and enhancing the anti-peeping effect of the display panel.

[0026] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0029] Figure 1 It is a cross-sectional schematic diagram of the display panel in the first embodiment of the present application.

[0030] Figure 2 It is a schematic top view of the display panel in the first embodiment of the present application.

[0031] Figure 3 This is a schematic diagram of two anti-peeping units arranged at intervals along the row direction in Example 1 of the present application.

[0032] Figure 4 Schematic diagram comparing the brightness of the integrated anti-peeping luminous portion and the anti-peeping luminous portion in this application.

[0033] Figure 5 This is a schematic diagram of the connection between the anti-peeping units of the anti-peeping light-emitting portion in Example 1 of the present application.

[0034] Figure 6 yes Figure 1 A partial enlarged schematic diagram of position A in the middle.

[0035] Figure 7 It is a schematic top view of the display panel in the second embodiment of the present application.

[0036] Figure 8 This is a schematic diagram of the elliptically symmetrical anti-peeping unit in Example 2 of the present application.

[0037] Figure 9 This is a schematic diagram of the intersecting circular anti-peeping unit in Example 2 of the present application.

[0038] Figure 10 This is a schematic diagram of the intersecting elliptical anti-peeping units in Example 2 of the present application.

[0039] Figure 11 It is a structural diagram of the display device in Example 3 of the present application.

[0040] Description of reference numerals:

[0041] 10. Display panel; 20. Mainboard;

[0042] 100. Base substrate;

[0043] 200, driving circuit layer;

[0044] 310, anode; 320, pixel definition layer; 321, pixel definition portion; 322, pixel opening region; 330, light-emitting layer; 331, display light-emitting portion; 3311, first light-emitting portion; 3312, second light-emitting portion; 3313, third light-emitting portion; 332, privacy protection light-emitting portion; 3321, privacy protection unit; 340, cathode layer;

[0045] 400, encapsulation layer; 410, first inorganic encapsulation layer; 420, organic encapsulation layer; 430, second inorganic encapsulation layer;

[0046] 510, light shielding unit; 511, main body; 512, auxiliary light shielding unit; 520, color resist layer; 530, organic filling layer;

[0047] 610, conductor part; 620, eaves part. DETAILED DESCRIPTION

[0048] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0049] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0050] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0051] Example 1

[0052] See also Figure 1and Figure 2 As shown, in this embodiment, the display panel 10 includes a base substrate 100, a drive circuit layer 200, an anode 310, a pixel definition layer 320, a light-emitting layer 330, a cathode layer 340, an encapsulation layer 400, and a light shielding unit 510. The drive circuit layer 200 is disposed on one side of the base substrate 100, which may include a glass substrate, a polyimide (Pi) substrate, or the like. The drive circuit layer 200 includes multiple pixel drive circuits. Multiple anodes 310 are formed on the side of the drive circuit layer 200 away from the base substrate 100, and each anode 310 can be connected to a pixel drive circuit.

[0053] The pixel definition layer 320 is formed on the side of the driving circuit layer 200 away from the base substrate 100. The pixel definition layer 320 includes a plurality of pixel opening areas 322 and a pixel definition portion 321 surrounding the pixel opening area 322, that is, the pixel definition portion 321 defines the pixel opening area 322, the pixel definition portion 321 covers the edge area of ​​the anode 310, and the pixel opening area 322 exposes the central area of ​​the anode 310.

[0054] The light-emitting layer 330 is formed at least within the pixel opening region 322 and is connected to the anode 310. The light-emitting layer 330 includes multiple display light-emitting portions 331 and multiple privacy-preventing light-emitting portions 332. Specifically, both the display light-emitting portions 331 and privacy-preventing light-emitting portions 332 are disposed within the pixel opening region 322. Each display light-emitting portion 331 is connected to an anode 310, and each privacy-preventing light-emitting portion 332 is connected to an anode 310. The corresponding anodes 310 of the privacy-preventing light-emitting portions 332 can be connected. A cathode layer 340 is formed on the side of the pixel definition layer 320 and light-emitting layer 330 away from the base substrate 100.

[0055] In some embodiments, the light-emitting layer 330 also includes a non-light-emitting portion on the pixel definition portion 321 located outside the pixel opening area 322, and the display light-emitting portion 331 and the anti-peeping light-emitting portion 332 are both connected to the non-light-emitting portion, which may be determined according to the specific situation. Usually, 3 to 4 display light-emitting portions 331 constitute a pixel unit, and multiple pixel units are arranged in an array along the row direction and column direction to display the picture. Each anti-peeping light-emitting portion 332 includes two anti-peeping units 3321, and the two anti-peeping units 3321 are arranged at intervals along the row direction or column direction. It should be understood that the two anti-peeping units 3321 belonging to the same anti-peeping light-emitting portion 332 are located in the same pixel opening area 322 and share an anode 310.

[0056] The two privacy protection units 3321 are spaced apart in the row direction or column direction, and the brightness of the privacy protection light of the privacy protection light emitting unit 332 in the row direction and the column direction is different. Figure 3As shown, the brightness of the anti-privacy light of the anti-privacy light emitting portion 332 in the row direction is greater than the brightness of the anti-privacy light of the anti-privacy light emitting portion 332 in the column direction. The main anti-privacy direction of the display panel 10 is the row direction, that is, the anti-privacy effect in the row direction is better. For another example, two anti-privacy units 3321 are arranged at intervals along the column direction, such as Figure 2 As shown, the brightness of the anti-peeping light of the anti-peeping light emitting portion 332 in the column direction is greater than the brightness of the anti-peeping light of the anti-peeping light emitting portion 332 in the row direction. The main anti-peeping direction of the display panel 10 is the column direction, that is, the anti-peeping effect in the column direction is better.

[0057] The encapsulation layer 400 is formed on the side of the cathode layer 340 away from the base substrate 100. The encapsulation layer 400 may include a first inorganic encapsulation layer 410, an organic encapsulation layer 420, and a second inorganic encapsulation layer 430 formed in sequence. A plurality of light shielding units 510 are spaced apart and formed on the side of the encapsulation layer 400 away from the base substrate 100. The light shielding units 510 are arranged in a one-to-one correspondence with the privacy protection units 3321. The light shielding units 510 may be made of a metal material or a black organic material. The orthographic projection of the display light emitting portion 331 on the base substrate 100 is spaced apart from the orthographic projection of the privacy protection unit 3321 on the base substrate 100. The orthographic projection of the privacy protection unit 3321 on the base substrate 100 is located within the orthographic projection of the privacy protection unit 510 on the base substrate 100. The orthographic projection of the privacy protection unit 3321 on the base substrate 100 and the orthographic projection of the privacy protection unit 510 on the base substrate 100 have the same or substantially the same shape.

[0058] The display panel 10 has two display modes: a normal mode and an anti-peeping mode. In the anti-peeping mode, both the display light emitting unit 331 and the anti-peeping light emitting unit 332 emit light. The light shielding unit 510 blocks the narrow-angle light emitted by the anti-peeping light emitting unit 332. However, the wide-angle light emitted by the anti-peeping light emitting unit 332 is not blocked, which can interfere with the display of the display light emitting unit 331, thus achieving wide-angle privacy protection. In the normal mode, the anti-peeping light emitting unit 332 does not emit light, while the display light emitting unit 331 emits light normally, and the display panel 10 can display normally. In other words, in the anti-peeping mode, the display image within the anti-peeping angle a (usually around 25°) is not interfered with, while the display image outside the anti-peeping angle a is interfered with, thus achieving wide-angle privacy protection.

[0059] The organic light-emitting diode (OLED) emits the highest brightness at 0°, and the brightness decreases significantly as the angle increases. The light emitted by the privacy-preventing light-emitting portion 332 at small angles is blocked by the light-shielding unit 510. That is, the area with the highest brightness is blocked by the light-shielding unit 510. As a result, the brightness of the privacy-preventing light-emitting portion 332 is lower outside the privacy-preventing viewing angle, affecting the privacy-preventing effect of the display panel.

[0060] In this embodiment, the display panel 10 includes a base substrate 100, a driving circuit layer 200, a pixel definition layer 320, a light-emitting layer 330, an encapsulation layer 400 and a light-shielding unit 510. The driving circuit layer 200 is arranged on one side of the base substrate 100, and the pixel definition layer 320 is formed on the side of the driving circuit layer 200 away from the base substrate 100. The pixel definition layer 320 includes a plurality of pixel opening areas 322 and a pixel definition portion 321 surrounding the pixel opening area 322. The light-emitting layer 330 is formed in the pixel opening area 322. The light-emitting layer 330 includes a plurality of The display light-emitting portion 331 and multiple anti-peeping light-emitting portions 332 are arranged at intervals, and each anti-peeping light-emitting portion 332 includes two anti-peeping units 3321. The two anti-peeping units 3321 are arranged at intervals along the row direction or the column direction. The encapsulation layer 400 is formed on the side of the pixel definition layer 320 and the light-emitting layer 330 away from the base substrate 100. The multiple shading units 510 are arranged at intervals and formed on the side of the encapsulation layer 400 away from the base substrate 100. The orthographic projection of the anti-peeping unit 3321 on the base substrate 100 is located within the orthographic projection of the shading unit 510 on the base substrate 100. The two anti-peeping units 3321 of the anti-peeping light-emitting portion 332 are arranged at intervals along the row direction or the column direction, and a light-emitting gap is formed between the corresponding two shading units 510. Compared with the integral anti-peeping light-emitting portion 332, the anti-peeping light in the central area of ​​the anti-peeping light-emitting portion 332 can be prevented from being completely blocked by the shading unit 510, thereby improving the light utilization rate and brightness of the anti-peeping light-emitting portion 332. Figure 4 As shown, the anti-peeping effect of the display panel 10 is enhanced.

[0061] In some embodiments, the plurality of display light-emitting portions 331 include a first light-emitting portion 3311, a second light-emitting portion 3312, and a third light-emitting portion 3313. The luminous efficiency of the first light-emitting portion 3311 is greater than that of the second light-emitting portion 3312, and the luminous efficiency of the second light-emitting portion 3312 is greater than that of the third light-emitting portion 3313. For example, the first light-emitting portion 3311 may emit green light, the second light-emitting portion 3312 may emit red light, and the third light-emitting portion 3313 may emit blue light. The display panel 10 includes a plurality of pixel units, each including at least one first light-emitting portion 3311, at least one second light-emitting portion 3312, and at least one third light-emitting portion 3313.

[0062] The first light emitting portion 3311 and the second light emitting portion 3312 are spaced apart along the first direction. The first light emitting portion 3311 and the second light emitting portion 3312 are located on one side of the third light emitting portion 3313 in the second direction, and the second direction is perpendicular to the first direction. The first direction is, for example, the row direction, and the second direction is, for example, the column direction, or vice versa. In the first direction, the first light emitting portion 3311 and the second light emitting portion 3312 are aligned with the third light emitting portion 3313 as a whole. For example Figure 2As shown, the distance between the left side of the first light-emitting portion 3311 and the left side of the third light-emitting portion 3313 is equal to the distance between the right side of the second light-emitting portion 3312 and the right side of the third light-emitting portion 3313. The privacy-preventing light-emitting portion 332 corresponds one-to-one with each pixel unit and is located at the intersection of at least some adjacent display light-emitting portions 331. The edge of the display light-emitting portion 331 adjacent to the privacy-preventing light-emitting portion 332 is recessed inward to make way for the privacy-preventing light-emitting portion 332, and the extension line of the intersection of at least some adjacent display light-emitting portions 331 passes through the privacy-preventing light-emitting portion 332.

[0063] It should be noted that the anti-peeping light emitting portion 332 can be provided in a one-to-one correspondence with each pixel unit, but is not limited to this. The anti-peeping light emitting portion 332 can also be provided in only some pixel units, depending on the specific situation. The anti-peeping light emitting portion 332 can be provided at the intersection of at least some adjacent display light emitting portions 331 of the pixel unit, but is not limited to this. The anti-peeping light emitting portion 332 can also be provided at the intersection of adjacent pixel units, depending on the specific situation.

[0064] The anti-peeping light emitting portion 332 is disposed at the junction of adjacent display light emitting portions 331 , which can prevent the anti-peeping light emitting portion 332 from occupying too much area of ​​a display light emitting portion 331 and affecting the display effect of the display panel 10 .

[0065] Furthermore, since the shape of the anti-peeping light-emitting portion 332 differs from the shape and size of the pixel unit, placing the anti-peeping light-emitting portion 332 outside the pixel unit would waste design space in the display panel 10, affecting the aperture ratio and pixel density of the display panel 10. In the present application, the anti-peeping light-emitting portion 332 is placed at the junction of adjacent display light-emitting portions 331, that is, the anti-peeping light-emitting portion 332 is correspondingly placed in each pixel unit. This solves the arrangement problem of the anti-peeping light-emitting portion 332 and the pixel unit, avoids wasting design space in the display panel 10, and improves the aperture ratio and pixel density of the display panel 10.

[0066] For example, the anti-peeping light emitting portion 332 is arranged at the junction of the first light emitting portion 3311, the second light emitting portion 3312 and the third light emitting portion 3313, as shown in FIG. Figure 2 shown.

[0067] The anti-peeping light emitting portion 332 is disposed at the junction of the three display light emitting portions 331 . The anti-peeping light emitting portion 332 does not occupy too much area of ​​each display light emitting portion 331 , thereby improving the display effect of the display panel 10 .

[0068] In some embodiments, the anti-peeping light-emitting portion 332 is located at the junction of the first light-emitting portion 3311 and the second light-emitting portion 3312 .

[0069] The third light-emitting portion 3313 has the lowest luminous efficiency and typically occupies the largest area. The privacy-preventing light-emitting portion 332 is located at the junction of the first light-emitting portion 3311 and the second light-emitting portion 3312. This avoids occupying the design space of the third light-emitting portion 3313, which has the lowest luminous efficiency. This improves the brightness and lifespan of the third light-emitting portion 3313.

[0070] It should be noted that the anti-peeping light-emitting portion 332 can be set at the junction of the first light-emitting portion 3311, the second light-emitting portion 3312 and the third light-emitting portion 3313 or at the junction of the first light-emitting portion 3311 and the second light-emitting portion 3312, but is not limited to this. The anti-peeping light-emitting portion 332 can also be set at the junction of the second light-emitting portion 3312 and the third light-emitting portion 3313, depending on the specific situation.

[0071] In some embodiments, the orthographic projections of the privacy protection unit 3321 and the display light emitting portion 331 on the base substrate 100 are both rectangular, and the ratio of the length of the long side to the short side of the rectangular orthographic projections of the privacy protection unit 3321 and the display light emitting portion 331 is ≥ 1.5. The areas of the rectangular orthographic projections of the two privacy protection units 3321 can be the same or different. When the areas of the rectangular orthographic projections of the two privacy protection units 3321 are different, the area ratio of the rectangular orthographic projections of the first privacy protection unit 3321 to the second privacy protection unit 3321 is in a range of 0.8 to 1.5.

[0072] The ratio of the length of the long side to the short side of the rectangular projection of the anti-peeping unit 3321 is limited to ≥1.5, which can prevent the anti-peeping light in the central area of ​​the anti-peeping unit 3321 from being completely blocked by the shading unit 510, thereby improving the light utilization rate and brightness of the anti-peeping light-emitting part 332.

[0073] In some embodiments, the display panel 10 further includes a conductor portion 610 and an eave portion 620. The conductor portion 610 is formed on the side of the pixel definition portion 321 away from the base substrate 100, and the eave portion 620 is formed on the side of the conductor portion 610 away from the base substrate 100. The eave portion 620 protrudes relative to the conductor portion 610, forming a recessed region between the eave portion 620 and the pixel definition portion 321. The recessed region is located on opposite sides of the conductor portion 610 from the pixel opening region 322. Both the light-emitting layer 330 and the cathode layer 340 are formed by vapor deposition. The eave portion 620 is used to block the light-emitting layer 330, and the conductor portion 610 is used to connect the cathode layer 340.

[0074] It should be noted that the display panel 10 may include a conductor portion 610 and an eaves portion 620 for forming the structure of the light-emitting layer 330 and the cathode layer 340, but is not limited thereto. The light-emitting layer 330 may also be evaporated using a high-precision metal mask (FMM), and the cathode layer 340 may entirely cover the pixel definition layer 320 and the light-emitting layer 330, depending on the specific situation.

[0075] As the resolution of the display panel 10 increases, a high-precision metal mask is used to evaporate the light-emitting layer 330. However, the production cost of a high-precision metal mask is high, and it is difficult to implement high-precision meshing and vapor deposition alignment techniques. The display panel 10 includes a conductor portion 610 and an eave portion 620, which are used to form the structure of the light-emitting layer 330 and the cathode layer 340. This eliminates the need for a high-precision metal mask, which helps reduce process difficulty and cost.

[0076] In some embodiments, the two privacy protection units 3321 of the privacy protection light emitting portion 332 are made of different materials, and the luminous colors of the two privacy protection units 3321 are correspondingly different. A pixel definition unit 321 is disposed between the two privacy protection units 3321. A conductor portion 610 and an eave portion 620 are correspondingly disposed on the side of the pixel definition unit 321 between the two privacy protection units 3321 away from the base substrate 100, thereby separating the two privacy protection units 3321.

[0077] The two privacy protection units 3321 are separated by the conductor portion 610 and the eaves portion 620 , thereby preventing light crosstalk between the two privacy protection units 3321 .

[0078] In some embodiments, the privacy protection unit 3321 is connected to one of the adjacent display light-emitting units 331. For example, the first privacy protection unit 3321 is connected to the first light-emitting unit 3311, and the second privacy protection unit 3321 is connected to the second light-emitting unit 3312. The first privacy protection unit 3321 is connected to the first light-emitting unit 3311, and the first privacy protection unit 3321 and the first light-emitting unit 3311 can be made of the same organic light-emitting material and emit the same color; the second privacy protection unit 3321 is connected to the second light-emitting unit 3312, and the second privacy protection unit 3321 and the second light-emitting unit 3312 can be made of the same organic light-emitting material and emit the same color.

[0079] The first privacy protection unit 3321 is connected to the first light-emitting portion 3311, and the second privacy protection unit 3321 is connected to the second light-emitting portion 3312. The privacy protection light-emitting portion 332 emits yellow light, which creates a more visual contrast between the privacy protection light and the display light, thereby improving the privacy protection effect. In addition, the first privacy protection unit 3321 is connected to the first light-emitting portion 3311, and the second privacy protection unit 3321 is connected to the second light-emitting portion 3312. The conductor portion 610 and the eaves portion 620 between the privacy protection unit 3321 and the connected display light-emitting portion 331 can be omitted, thereby improving the pixel aperture ratio to a certain extent.

[0080] It should be noted that since the privacy-prevention light-emitting unit 332 is located at the intersection of the three display light-emitting units 331, the light emitted by the privacy-prevention light-emitting unit 332 can be a mixture of red and green light, a mixture of red and blue light, or a mixture of blue and green light, depending on the specific situation. In addition, the first privacy-prevention unit 3321 can also include materials from any two of the first light-emitting unit 3311, the second light-emitting unit 3312, and the third light-emitting unit 3313. The first privacy-prevention unit 3321 is a stack of two organic light-emitting materials, while the second privacy-prevention unit 3321 includes materials from the remaining display light-emitting unit 331. The light emitted by the privacy-prevention light-emitting unit 332 is white.

[0081] In some embodiments, the two anti-peeping units 3321 of the anti-peeping light emitting portion 332 are made of the same material, and a pixel defining portion 321 is provided between the two anti-peeping units 3321. Figure 5 shown.

[0082] The two anti-peeping units 3321 are made of the same material and can be connected. Figure 3 As shown, the conductor portion 610 and the eaves portion 620 between the two privacy protection units 3321 can be omitted, thereby improving the pixel aperture ratio to a certain extent.

[0083] In some embodiments, the anti-peeping light-emitting portion 332 is made of the same material as the first light-emitting portion 3311 or the second light-emitting portion 3312 .

[0084] The anti-peeping light-emitting portion 332 is made of the same material as the first light-emitting portion 3311, and emits the same color as the first light-emitting portion 3311. The first light-emitting portion 3311 has the highest luminous efficiency and, under the same data voltage, the highest brightness. The anti-peeping light-emitting portion 332 emits the same color as the first light-emitting portion 3311, thus occupying a smaller area and having minimal impact on the resolution of the display panel 10.

[0085] It should be noted that the luminous color of the anti-peeping light-emitting portion 332 can be the same as the luminous color of the first light-emitting portion 3311, but is not limited thereto. The luminous color of the anti-peeping light-emitting portion 332 can also be the same as the luminous color of the second light-emitting portion 3312, depending on the specific situation. In some embodiments, the luminous color of the anti-peeping light-emitting portion 332 can also be the same as the luminous color of the third light-emitting portion 3313.

[0086] Because the privacy-prevention light-emitting portion 332 does not emit light in normal mode, when the ratio of the area occupied by the privacy-prevention light-emitting portion 332 to the area occupied by the first light-emitting portion 3311 is large, the brightness difference between the first light-emitting portion 3311 and the privacy-prevention light-emitting portion 332 is significant, significantly impacting the display quality of the display panel 10. The privacy-prevention light-emitting portion 332 emits the same color as the next brightest display light-emitting portion 331 (i.e., the second light-emitting portion 3312), minimizing the brightness difference between the privacy-prevention light-emitting portion 332 and the second light-emitting portion 3312 and reducing the impact on the display quality of the display panel 10.

[0087] In some embodiments, the privacy-preventing light-emitting portion 332 includes materials from at least any two of the first light-emitting portion 3311, the second light-emitting portion 3312, and the third light-emitting portion 3313. The privacy-preventing light-emitting portion 332 is a stack of two or three organic light-emitting materials. For example, if the privacy-preventing light-emitting portion 332 includes materials from the first light-emitting portion 3311 and the second light-emitting portion 3312, the light-emitting color of the privacy-preventing light-emitting portion 332 is yellow; if the privacy-preventing light-emitting portion 332 includes materials from the first light-emitting portion 3311, the second light-emitting portion 3312, and the third light-emitting portion 3313, the light-emitting color of the privacy-preventing light-emitting portion 332 is white.

[0088] The anti-peeping light emitting portion 332 emits yellow or white light. The anti-peeping light emitting portion 332 has a greater brightness, and the anti-peeping light and the display light are more likely to form a visual contrast, thereby improving the anti-peeping effect.

[0089] In some embodiments, the shading unit 510 includes a main body 511 and an auxiliary shading portion 512. Figure 6 As shown, the auxiliary light-shielding portion 512 is located on the side of the main body 511 away from the base substrate 100. The orthographic projection of the privacy protection unit 3321 on the base substrate 100 is located within the orthographic projection of the main body 511 on the base substrate 100, and the orthographic projection of the main body 511 on the base substrate 100 is located within the orthographic projection of the auxiliary light-shielding portion 512 on the base substrate 100. The main body 511 is used to limit the light output angle of the privacy protection unit 3321 to form an anti-peeping angle of view a, and the auxiliary light-shielding portion 512 is used to block diffracted light within the anti-peeping angle of view a.

[0090] In some technical solutions, when the display panel 10 displays an image in anti-peeping mode, the user can also see part of the anti-peeping unit 3321 within the anti-peeping angle a. That is, the light from the anti-peeping unit 3321 that does not appear within the anti-peeping angle a interferes with the light from the display light-emitting portion 331, affecting the display effect of the display panel 10 within the anti-peeping angle a. The anti-peeping angle a is determined by the shading angle of the shading unit 510. The larger the shading range of the shading unit 510, the larger the anti-peeping angle a. The applicant has discovered that the user can also see part of the anti-peeping unit 3321 within the anti-peeping angle a because some of the anti-peeping light continues to propagate around the shading unit 510, which acts as an obstacle.

[0091] The shading unit 510 includes a main body 511 and an auxiliary shading portion 512. The auxiliary shading portion 512 blocks the diffracted light within the anti-peeping angle a, which can reduce or eliminate the unwanted anti-peeping light within the anti-peeping angle in the anti-peeping mode, and improve the display effect of the display panel 10 within the anti-peeping angle.

[0092] In some embodiments, the display panel 10 further includes a color resist layer 520. The color resist layer 520 is formed on the side of the encapsulation layer 400 away from the base substrate 100, such that the orthographic projection of the display light-emitting portion 331 on the base substrate 100 is located within the orthographic projection of the color resist layer 520 on the base substrate 100. The color resist layer 520 may include green, red, and blue color resists arranged at intervals. The green color resist corresponds to the first light-emitting portion 3311, the red color resist corresponds to the second light-emitting portion 3312, and the blue color resist corresponds to the third light-emitting portion 3313. The display panel 10 further includes a black matrix. The black matrix is ​​formed on the side of the encapsulation layer 400 away from the base substrate 100 and is located in the area surrounding the green, red, and blue color resists. A light-emitting gap is formed between the light-shielding unit 510, the color resist layer 520, and the black matrix. The light-emitting gap surrounds the light-shielding unit 510, and a transparent organic filler layer 530 may be disposed in the light-emitting gap.

[0093] To improve the contrast of the display panel 10 and achieve a black-out effect, the display panel 10 typically uses a polarizer (POL). Polarizers can effectively reduce the intensity of ambient light reflected on the screen. However, the light transmittance of polarizers is generally only around 44%, and to achieve higher light output brightness, more power is required. In addition, polarizers are thick and brittle, which is not conducive to the development of dynamic bending products.

[0094] The display panel 10 includes a color resist layer 520, which can block external light and filter the light emitted by the display light-emitting portion 331, thereby reducing the reflection intensity of external ambient light on the screen. The polarizer of the display panel 10 can be eliminated, which not only greatly reduces the thickness of the display panel 10, but also increases the light output rate from 44% to 80%, greatly increasing the light output brightness, thereby reducing the power consumption of the display panel 10.

[0095] Example 2

[0096] The main difference between the second embodiment and the first embodiment is that the shape of the privacy protection unit 3321 is different.

[0097] See also Figures 7 to 10 As shown, at least part of the edge of the orthographic projection of the light shielding unit 510 on the base substrate 100 is arc-shaped.

[0098] At least part of the edge of the shading unit 510 is an arc-shaped edge, which can reduce the intensity of the diffracted light, reduce or eliminate the unwanted anti-peeping light within the anti-peeping viewing angle in the anti-peeping mode, and improve the display effect of the display panel 10 within the anti-peeping viewing angle.

[0099] In some embodiments, the orthographic projection of the light shielding unit 510 on the base substrate 100 is a circle, an ellipse, or a rounded polygon. The rounded polygon is, for example, a rounded rectangle, a rounded regular hexagon, a rounded regular octagon, or a rounded regular decagon. The main body 511 and the auxiliary light shielding portion 512 have the same or similar shapes. The orthographic projections of the main body 511 and the auxiliary light shielding portion 512 on the base substrate 100 are respectively a circle, an ellipse, or a rounded polygon.

[0100] The orthographic projection of the light shielding unit 510 on the base substrate 100 is a circle, an ellipse or a rounded polygon, which can further reduce the intensity of the diffracted light and reduce or eliminate the unwanted anti-peeping light within the anti-peeping viewing angle in the anti-peeping mode.

[0101] In some embodiments, the adjacent sides of the two light shielding units 510 corresponding to the same anti-peeping light emitting portion 332 are straight sides or arc sides, and the two light shielding units 510 are symmetrical in the row direction or column direction. For example, the orthographic projection of the two light shielding units 510 on the base substrate 100 is a circle with a strip-shaped gap in the middle, such as Figure 7 As shown, the orthographic projections of the two light shielding units 510 on the base substrate 100 are both elliptical, as shown in FIG. Figure 8 shown.

[0102] The two light shielding units 510 are symmetrical in the row direction or the column direction. The structure of the light shielding units 510 is simpler, which is beneficial to reducing the manufacturing cost of the display panel 10 .

[0103] In some embodiments, the adjacent sides of the two light shielding units 510 corresponding to the same anti-peeping light emitting portion 332 are arc-shaped sides, and the adjacent arc-shaped sides of the two light shielding units 510 are concentric. For example, the orthographic projection of the first light shielding unit 510 on the base substrate 100 is a circle, and the orthographic projection of the second light shielding unit 510 on the base substrate 100 is a partial circle. The first light shielding unit 510, the second light shielding unit 510, and the light exit gap between the two form a circular pattern, such as Figure 9 As shown, the orthographic projection of the first light shading unit 510 on the base substrate 100 is an ellipse, the orthographic projection of the second light shading unit 510 on the base substrate 100 and the adjacent side of the first light shading unit 510 are an elliptical arc, the orthographic projection of the second light shading unit 510 on the base substrate 100 and the non-adjacent side of the first light shading unit 510 are an elliptical arc, and the orthographic projection of the second light shading unit 510 on the base substrate 100 is a partial ellipse.

[0104] The adjacent arc edges of the two shading units 510 are concentric, the shading units 510 have fewer non-arc edges and the outer contour of the combination of the two shading units 510 has fewer non-arc edges, which is beneficial to reducing the intensity of diffracted light and reducing or eliminating unwanted anti-peeping light within the anti-peeping angle of view in the anti-peeping mode.

[0105] In some embodiments, the orthographic projection of the privacy protection unit 3321 on the base substrate 100 and the orthographic projection of the light shielding unit 510 on the base substrate 100 have the same shape but different sizes.

[0106] The orthographic projection of the anti-peeping light emitting portion 332 on the base substrate 100 is the same as the orthographic projection of the light shielding unit 510 on the base substrate 100 , and the anti-peeping viewing angles a at different viewing angles are the same, which can improve the display effect of the display panel 10 .

[0107] Example 3

[0108] See also Figure 11 As shown, the display device in this embodiment includes a display panel 10 and a main board 20. The main board 20 is connected to the display panel 10. The display panel 10 includes the display panel 10 disclosed in the first embodiment and the second embodiment.

[0109] In this embodiment, the display device includes a display panel 10, which includes a base substrate 100, a driving circuit layer 200, a pixel definition layer 320, a light-emitting layer 330, an encapsulation layer 400, and a light-shielding unit 510. The driving circuit layer 200 is arranged on one side of the base substrate 100, and the pixel definition layer 320 is formed on the side of the driving circuit layer 200 away from the base substrate 100. The pixel definition layer 320 includes a plurality of pixel opening areas 322 and a pixel definition portion 321 surrounding the pixel opening areas 322. The light-emitting layer 330 is formed in the pixel opening areas 322. 330 includes multiple display light-emitting parts 331 and multiple anti-peeping light-emitting parts 332, each anti-peeping light-emitting part 332 includes two anti-peeping units 3321, and the two anti-peeping units 3321 are arranged at intervals along the row direction or the column direction. The encapsulation layer 400 is formed on the side of the pixel definition layer 320 and the light-emitting layer 330 away from the base substrate 100, and multiple shading units 510 are arranged at intervals and formed on the side of the encapsulation layer 400 away from the base substrate 100. The orthographic projection of the anti-peeping unit 3321 on the base substrate 100 is located within the orthographic projection of the shading unit 510 on the base substrate 100. The two anti-peeping units 3321 of the anti-peeping luminous portion 332 are spaced apart along the row direction or the column direction, and a light-emitting gap is formed between the two corresponding shading units 510. Compared with the integral anti-peeping luminous portion 332, the anti-peeping light in the central area of ​​the anti-peeping luminous portion 332 can be prevented from being completely blocked by the shading unit 510, thereby improving the light utilization rate and brightness of the anti-peeping luminous portion 332 and enhancing the anti-peeping effect of the display panel 10 and the display device.

[0110] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0111] In this application, unless otherwise specified or limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0112] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0113] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent application.

Claims

1. A display panel comprising a base substrate and a driving circuit layer, wherein the driving circuit layer is arranged on one side of the base substrate, characterized in that: The display panel further includes: A pixel definition layer is formed on a side of the driving circuit layer away from the base substrate, the pixel definition layer comprising a plurality of pixel opening areas and a pixel definition portion surrounding the pixel opening areas; a light-emitting layer formed in the pixel opening area, the light-emitting layer including a plurality of display light-emitting portions and a plurality of anti-peeping light-emitting portions, the anti-peeping light-emitting portion including two anti-peeping units, the two anti-peeping units being spaced apart along a row direction or a column direction; An encapsulation layer is formed on a side of the pixel definition layer and the light emitting layer away from the base substrate; a light shielding unit, wherein a plurality of the light shielding units are arranged at intervals and formed on a side of the encapsulation layer away from the base substrate, an orthographic projection of the display light emitting portion on the base substrate and an orthographic projection of the light shielding unit on the base substrate are spaced apart, and an orthographic projection of the anti-peeping unit on the base substrate is located within the orthographic projection of the light shielding unit on the base substrate; The shading unit includes a main body and an auxiliary shading part, the auxiliary shading part is located on the side of the main body away from the base substrate, the orthographic projection of the anti-peeping unit on the base substrate is located within the orthographic projection of the main body on the base substrate, the orthographic projection of the main body on the base substrate is located within the orthographic projection of the auxiliary shading part on the base substrate, the main body is used to limit the light output angle of the anti-peeping unit to form an anti-peeping viewing angle, and the auxiliary shading part is used to block the diffracted light within the anti-peeping viewing angle.

2. The display panel according to claim 1, wherein: The multiple display light-emitting portions include a first light-emitting portion, a second light-emitting portion, and a third light-emitting portion, the light-emitting efficiency of the first light-emitting portion is greater than the light-emitting efficiency of the second light-emitting portion, the light-emitting efficiency of the second light-emitting portion is greater than the light-emitting efficiency of the third light-emitting portion, the display panel includes a plurality of pixel units, the pixel unit includes one first light-emitting portion, one second light-emitting portion, and one third light-emitting portion, the first light-emitting portion and the second light-emitting portion are spaced apart along a first direction, the first light-emitting portion and the second light-emitting portion are located on one side of the third light-emitting portion in a second direction, the second direction is perpendicular to the first direction, and in the first direction, the first light-emitting portion and the second light-emitting portion are aligned with the third light-emitting portion as a whole; The anti-peeping luminous portion is provided in at least some of the pixel units. The anti-peeping luminous portion is provided at the junction of at least some of the adjacent display luminous portions, and an extension line of the junction line of at least some of the adjacent display luminous portions passes through the anti-peeping luminous portion.

3. The display panel according to claim 2, wherein: The two anti-peeping units of the anti-peeping luminous portion emit light of the same color, and the pixel defining portion is provided between the two anti-peeping units.

4. The display panel according to claim 3, wherein: The anti-peeping light-emitting portion is made of the same material as the first light-emitting portion or the second light-emitting portion.

5. The display panel according to claim 2, wherein: The two anti-peep units of the anti-peep light-emitting portion have different luminous colors, and the pixel definition portion is arranged between the two anti-peep units. The display panel also includes a conductor portion and an eaves portion. The conductor portion is at least formed on the side of the pixel definition portion between the two anti-peep units away from the base substrate, and the eaves portion is formed on the side of the conductor portion away from the base substrate. The eaves portion protrudes relative to the conductor portion, so that a recessed area is formed between the eaves portion and the pixel definition portion. The recessed area is located on two sides of the conductor portion opposite to the pixel opening area, and the eaves portion is used to isolate the light-emitting layer.

6. The display panel according to claim 5, wherein: The privacy protection unit is connected to one of the adjacent display light emitting parts.

7. The display panel according to claim 1 or 2, characterized in that: At least part of the edge of the orthographic projection of the light shielding unit on the base substrate is arc-shaped, and the shape of the orthographic projection of the light shielding unit on the base substrate includes a circle, an ellipse or a rounded polygon.

8. The display panel according to claim 3, wherein: The adjacent sides of the two shading units corresponding to the same anti-peeping luminous portion are straight sides or arc-shaped sides, and the two shading units are symmetrical in the row direction or the column direction; or The adjacent sides of the two light-shielding units corresponding to the same anti-peeping light-emitting portion are arc-shaped sides, and the adjacent arc-shaped sides of the two light-shielding units are concentric.

9. A display device, characterized in that: include: The display panel according to any one of claims 1 to 8; A mainboard is connected to the display panel.

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