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, wherein the driving circuit layer and the pixel definition layer are sequentially formed on one side of the substrate, the light-emitting layer is formed in a display light-emitting portion and an anti-peeping light-emitting portion within a pixel opening area of ​​the pixel definition layer, each anti-peeping light-emitting portion includes four first anti-peeping units arranged at intervals, the encapsulation layer is formed on a side of the pixel definition layer and the light-emitting layer away from the substrate, a plurality of shading units are arranged at intervals and formed on a side of the encapsulation layer away from the substrate, the shading unit includes a plurality of first shading areas arranged at intervals, the first shading area shielding the first anti-peeping unit. 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.

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] OLED (Organic Light Emitting Diode) 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 reduce the viewing angle of the display panel to effectively protect commercial secrets and personal privacy.

[0003] To achieve privacy protection, some display panels feature pixel units that include both display pixels and privacy pixels, with a light-shielding structure positioned above the privacy pixels. In normal mode, the privacy pixels are off, allowing the display panel to function 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 remains unblocked, potentially interfering with the display pixels. In other words, in privacy mode, the display image within the privacy viewing angle remains undisturbed, while the display image outside the privacy viewing angle is disrupted, 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 disposed 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 privacy-preventing light-emitting portions, the privacy-preventing light-emitting portion including four first privacy-preventing units arranged in an array and spaced apart from each other;

[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 is formed on a side of the encapsulation layer away from the base substrate. The shading unit is arranged in a one-to-one correspondence with the anti-peeping light-emitting portion. The shading unit includes a plurality of first shading areas arranged at intervals. 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. The orthographic projection of the first anti-peeping unit on the base substrate is located within the orthographic projection of the first shading area on the base substrate.

[0011] Optionally, the anti-peeping light-emitting portion further includes a second anti-peeping unit, which is arranged in the central area of ​​the pixel opening area corresponding to the anti-peeping light-emitting portion, and four first anti-peeping units surround the second anti-peeping unit and are arranged in an array along the row and column directions. Adjacent first anti-peeping units are separated by the pixel definition portion, and the shading unit further includes a second shading area, and the orthographic projection of the second anti-peeping unit on the base substrate is located within the orthographic projection of the second shading area on the base substrate.

[0012] Optionally, a portion of the pixel opening area where the second anti-peeping unit is located is connected to or spaced from a portion of the pixel opening area where the first anti-peeping unit is located, and the second light-shielding area is connected to the first light-shielding area.

[0013] Optionally, the luminous color of the first anti-peeping unit is the same as the luminous color of the second anti-peeping unit.

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

[0015] Optionally, the display panel further includes a conductor portion and an eaves portion, the conductor portion being formed between adjacent first anti-peeping units having different luminous colors and between adjacent first anti-peeping units and second anti-peeping units having different luminous colors, the eaves portion being formed on the side of the conductor portion away from the base substrate, the eaves portion protruding relative to the conductor portion so that a recessed area is formed between the eaves portion and the pixel definition portion, the recessed area being located on opposite sides of the conductor portion and the pixel opening area, and the eaves portion being used to isolate the light-emitting layer.

[0016] 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;

[0017] The anti-peeping light-emitting portion is provided in at least part of the pixel units, and the anti-peeping light-emitting portion is provided at the junction of at least part of the adjacent display light-emitting portions. The extension line of the junction line of at least part of the adjacent display light-emitting portions passes through the anti-peeping light-emitting portion, and at least part of the first anti-peeping unit is connected to the adjacent display light-emitting portion with the same luminous color.

[0018] Optionally, at least part of the edge of the orthographic projection of the shading unit on the base substrate is an arc-shaped edge.

[0019] 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 luminous part 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 luminous part 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.

[0020] The present application also provides a display device, comprising:

[0021] the display panel;

[0022] A mainboard is connected to the display panel.

[0023] The display panel and display device disclosed in this application have the following beneficial effects:

[0024] 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 light-shielding unit. The driving circuit layer and the pixel definition layer are sequentially formed on one side of the substrate. The pixel definition layer includes a pixel opening region and a pixel definition portion. The light-emitting layer includes a display light-emitting portion and an anti-peeping light-emitting portion within the pixel opening region. Each anti-peeping light-emitting portion includes four first 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. A plurality of light-shielding units are arranged at intervals and formed on the side of the encapsulation layer away from the substrate. The light-shielding unit includes a plurality of first light-shielding regions arranged at intervals. The orthographic projections of the first light-shielding units on the substrate are located within the orthographic projections of the first light-shielding regions on the substrate. Spaces are formed between the four first light-shielding units arranged in an array, and light-emitting gaps are formed between the corresponding first light-shielding regions. Compared with an integrated anti-peeping light-emitting portion, this prevents the anti-peeping light in the central region of the anti-peeping light-emitting portion from being completely blocked by the light-shielding units, thereby improving the light utilization efficiency and brightness of the anti-peeping light-emitting portion and enhancing the anti-peeping effect of the display panel.

[0025] 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.

[0026] 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

[0027] 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.

[0028] Figure 1 It is a cross-sectional schematic diagram of the display panel in the first embodiment of the present application.

[0029] Figure 2 It is a schematic top view of the display panel in the first embodiment of the present application.

[0030] Figure 3 Schematic diagram of a display panel with five anti-peeping units in Example 1 of the present application.

[0031] Figure 4 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.

[0032] Figure 5 This is a schematic diagram showing that part of the edge of the shading unit in the first embodiment of the present application is arc-shaped.

[0033] Figure 6yes Figure 1 A partial enlarged schematic diagram of position A in the middle.

[0034] Figure 7 It is a structural diagram of the display device in Example 2 of the present application.

[0035] Description of reference numerals:

[0036] 10. Display panel; 20. Mainboard;

[0037] 100. Base substrate;

[0038] 200, driving circuit layer;

[0039] 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, first privacy protection unit; 3322, second privacy protection unit; 340, cathode layer;

[0040] 400, encapsulation layer; 410, first inorganic encapsulation layer; 420, organic encapsulation layer; 430, second inorganic encapsulation layer;

[0041] 510, light shielding unit; 510a, main body; 510b, auxiliary light shielding portion; 511, first light shielding area; 512, second light shielding area; 520, color resist layer; 530, organic filling layer;

[0042] 610, conductor part; 620, eaves part. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Example 1

[0047] See also Figure 1 and 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.

[0048] 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.

[0049] 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.

[0050] 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 and column directions to display the picture. Each anti-peeping light-emitting portion 332 includes four first anti-peeping units 3321 arranged at intervals, and the four first anti-peeping units 3321 are arranged in an array along the row and column directions. It should be understood that the four first 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.

[0051] The encapsulation layer 400 is formed on the side of the cathode layer 340 facing 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 facing away from the base substrate 100. Each light shielding unit 510 corresponds to each of the privacy-preventing light-emitting units 332. The light shielding units 510 may be made of a metallic material or a black organic material. The light shielding units 510 include a plurality of spaced-apart first light shielding regions 511. The orthographic projections of the display light-emitting units 331 on the base substrate 100 are spaced apart from the orthographic projections of the light shielding units 510 on the base substrate 100. The orthographic projections of the first privacy-preventing units 3321 on the base substrate 100 are located within the orthographic projections of the first light shielding regions 511 on the base substrate 100. The orthographic projections of the first privacy-preventing units 3321 on the base substrate 100 and the orthographic projections of the first light shielding regions 511 on the base substrate 100 are identical or substantially identical in shape.

[0052] 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.

[0053] The organic light-emitting diode (OLED) has 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 10.

[0054] 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 and the pixel definition layer 320 are sequentially formed on one side of 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 to display the light-emitting portion 331 and the anti-peeping light-emitting portion 332. Each anti-peeping light-emitting portion 332 includes four first privacy-prevention units 3321 spaced apart from each other. The encapsulation layer 400 is formed on the side of the pixel definition layer 320 and the light-emitting layer 330 facing away from the base substrate 100. A plurality of light-shielding units 510 are spaced apart and formed on the side of the encapsulation layer 400 facing away from the base substrate 100. The light-shielding units 510 include a plurality of first light-shielding regions 511 spaced apart from each other. The orthographic projections of the first privacy-prevention units 3321 on the base substrate 100 are located within the orthographic projections of the first light-shielding regions 511 on the base substrate 100. Spaces are formed between the four first privacy-prevention units 3321 arranged in an array, and light-emitting gaps are formed between the corresponding first light-shielding regions 511. Compared to a monolithic anti-peeping light-emitting portion 332, this prevents the privacy-prevention light in the central region of the privacy-prevention light-emitting portion 332 from being completely blocked by the light-shielding units 510. This improves the light utilization efficiency and brightness of the privacy-prevention light-emitting portion 332, thereby enhancing the privacy-prevention effect of the display panel 10.

[0055] In some embodiments, the anti-peeping light emitting unit 332 further includes a second anti-peeping unit 3322, such as Figure 3 As shown, the second privacy protection unit 3322 is disposed in the center of the pixel opening area 322 corresponding to the privacy protection light emitting portion 332. Four first privacy protection units 3321 surround the second privacy protection unit 3322 and are arranged in an array along the row and column directions. Adjacent first privacy protection units 3321 are separated by the pixel defining portion 321. The light shielding unit 510 also includes a second light shielding area 512. The orthographic projection of the second privacy protection unit 3322 on the base substrate 100 is located within the orthographic projection of the second light shielding area 512 on the base substrate 100.

[0056] A gap is formed between the four first anti-peeping units 3321 arranged in the array, and a light-emitting gap in the row direction and the column direction is formed between the corresponding first shading areas 511. A second anti-peeping unit 3322 is arranged below the light-emitting gap in the row direction and the column direction, which can improve the space utilization of the display panel 10; the anti-peeping light of the second anti-peeping unit 3322 can be emitted through the light-emitting gap, thereby improving the light utilization and brightness of the anti-peeping light-emitting part 332, and enhancing the anti-peeping effect of the display panel 10.

[0057] In some embodiments, the orthographic projections of the first privacy protection unit 3321 and the second privacy protection unit 3322 on the base substrate 100 are both rectangular, the ratio of the lengths of adjacent sides of the rectangular orthographic projections of the first privacy protection unit 3321 and the second privacy protection unit 3322 is in a range of 0.8 to 1.5, and the ratio of the areas of the rectangular orthographic projections of the first privacy protection unit 3321 and the second privacy protection unit 3322 is in a range of 0.8 to 1.5. As a preferred embodiment, the orthographic projections of the first privacy protection unit 3321 and the second privacy protection unit 3322 on the base substrate 100 are both square.

[0058] The orthographic projections of the first and second privacy protection units 3321 and 3322 on the base substrate 100 are both rectangular, which can prevent the privacy protection light in the center area of ​​the privacy protection unit from being completely blocked by the shading unit 510, thereby improving the light utilization rate and brightness of the privacy protection light emitting portion 332.

[0059] In some embodiments, the partial pixel opening area 322 where the second anti-peep unit 3322 is located is spaced apart from the partial pixel opening area 322 where the first anti-peep unit 3321 is located, and the second light-shielding area 512 is connected to the first light-shielding area 511. That is, light-emitting gaps are provided on both sides of the row direction and on both sides of the column direction of the light-shielding unit 510. In other embodiments, the partial pixel opening area 322 where the second anti-peep unit 3322 is located is connected to or overlaps with the partial pixel opening area 322 where the first anti-peep unit 3321 is located. That is, the side lengths of the rectangular orthographic projection of the second anti-peep unit 3322 in the row direction and the column direction can be set as appropriate to ensure that the anti-peep light in the center area of ​​the second anti-peep unit 3322 can be emitted through the light-emitting gaps on both sides of the row direction and on both sides of the column direction of the light-shielding unit 510.

[0060] The rectangular orthographic projections of the second anti-peeping unit 3322 and the first anti-peeping unit 3321 are connected or spaced apart, so that the size of the second anti-peeping unit 3322 can be maximized. The second shading area 512 is connected to the first shading area 511, which can improve the utilization rate of the space occupied by the shading unit 510 in the display panel 10, which is beneficial to improving the pixel aperture ratio of the display panel 10.

[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 2 As 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 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.

[0072] 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.

[0073] 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.

[0074] In some embodiments, among the four first privacy protection units 3321 and one second privacy protection unit 3322 of the privacy protection light emitting unit 332, adjacent first privacy protection units 3321 may emit different luminous colors; adjacent first privacy protection units 3321 and second privacy protection units 3322 may emit different luminous colors. The conductor portion 610 and the eaves portion 620 are further formed between adjacent first privacy protection units 3321 emitting different luminous colors, and between adjacent first privacy protection units 3321 and second privacy protection units 3322 emitting different luminous colors.

[0075] The anti-peeping light of the anti-peeping light-emitting portion 332 is formed by mixing the anti-peeping light of 5 anti-peeping units. The luminous colors of the anti-peeping units of the anti-peeping light-emitting portion 332 can be different. The anti-peeping light-emitting portion 332 can be composed of any two or three of the red anti-peeping units, the green anti-peeping units and the blue anti-peeping units to form an anti-peeping light-emitting portion 332 with luminous colors such as yellow and white. The anti-peeping light-emitting portion 332 has 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.

[0076] In addition, adjacent first privacy protection units 3321 with different luminous colors and adjacent first privacy protection units 3321 and second privacy protection units 3322 with different luminous colors are separated by the conductor part 610 and the eaves part 620, which can avoid light crosstalk between adjacent privacy protection units.

[0077] In some embodiments, at least a portion of the first privacy protection unit 3321 is connected to an adjacent display light-emitting unit 331 emitting the same color. For example, a portion of the first privacy protection unit 3321 may be connected to the first light-emitting unit 3311, and a portion of the first privacy protection unit 3321 may be connected to the second light-emitting unit 3312. Furthermore, a portion of the first privacy protection unit 3321 may be connected to the third light-emitting unit 3313. It should be understood that whether a first privacy protection unit 3321 is connected to an adjacent display light-emitting unit 331 may be determined based on the color of the first privacy protection unit 3321.

[0078] At least part of the first privacy protection unit 3321 is connected to the adjacent display light-emitting portion 331 with the same luminous color, and the conductor portion 610 and the eaves portion 620 between the first 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.

[0079] In some embodiments, the luminous color of the first privacy protection unit 3321 is the same as the luminous color of the second privacy protection unit 3322 , the first privacy protection unit 3321 and the second privacy protection unit 3322 are connected, and adjacent first privacy protection units 3321 are connected.

[0080] The anti-peeping luminous portion 332 is divided into five anti-peeping units. The size of the anti-peeping units is small. The luminous color of the first anti-peeping unit 3321 is the same as that of the second anti-peeping unit 3322. The anti-peeping luminous portion 332 is formed by evaporation of an organic luminescent material, which can reduce the difficulty and cost of manufacturing the anti-peeping luminous portion 332. In addition, only the pixel definition portion 321 is provided between adjacent first anti-peeping units 3321. Figure 4 As shown, the conductor portion 610 and the eaves portion 620 can be omitted, thereby improving the pixel aperture ratio to a certain extent.

[0081] 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 .

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] In some embodiments, at least part of the edge of the orthographic projection of the light shielding unit 510 on the base substrate 100 is an arc-shaped edge, such as Figure 5 For example, the light shielding unit 510 is composed of four first light shielding areas 511 and one second light shielding area 512. When the first light shielding area 511 and the second light shielding area 512 are both rounded rectangles, part of the edges of the light shielding unit 510 formed by the combination of the first light shielding area 511 and the second light shielding area 512 are arc-shaped edges; when the first light shielding area 511 and the second light shielding area 512 are both circular, all the edges of the light shielding unit 510 formed by the combination of the first light shielding area 511 and the second light shielding area 512 are arc-shaped edges.

[0088] 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 luminous portion 332 within the anti-peeping angle a. That is, the light from the anti-peeping luminous portion 332 that does not appear in the anti-peeping angle a interferes with the light from the display luminous 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 luminous portion 332 within the anti-peeping angle a because part of the anti-peeping light continues to propagate around the shading unit 510 that acts as an obstacle.

[0089] 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.

[0090] In some embodiments, the shading unit 510 includes a main body portion 510a and an auxiliary shading portion 510b. Figure 6As shown, the auxiliary light-shielding portion 510b is located on the side of the main portion 510a away from the base substrate 100. The orthographic projection of the anti-peeping luminous portion 332 on the base substrate 100 is located within the orthographic projection of the main portion 510a on the base substrate 100, and the orthographic projection of the main portion 510a on the base substrate 100 is located within the orthographic projection of the auxiliary light-shielding portion 510b on the base substrate 100. The main portion 510a is used to limit the light output angle of the anti-peeping luminous portion 332 to form the anti-peeping angle a, and the auxiliary light-shielding portion 510b is used to block diffracted light within the anti-peeping angle a. It should be understood that the light-shielding unit 510 includes a first light-shielding area 511 and a second light-shielding area 512, each of which is composed of two layers: the main portion 510a and the auxiliary light-shielding portion 510b.

[0091] The shading unit 510 includes a main body 510a and an auxiliary shading portion 510b. The auxiliary shading portion 510b 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] See also Figure 7 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.

[0097] 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 and the pixel definition layer 320 are sequentially formed on one side of 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 to display the light-emitting portion 331 and the anti-peeping light-emitting portion 331. The anti-peeping light-emitting portion 332 includes four first privacy-prevention units 3321 spaced apart from each other. The encapsulation layer 400 is formed on the side of the encapsulation layer 400 away from the substrate 100. A plurality of light-shielding units 510 are spaced apart and formed on the side of the encapsulation layer 400 away from the substrate 100. The light-shielding units 510 include a plurality of first light-shielding regions 511 spaced apart from each other. The orthographic projections of the first privacy-prevention units 3321 on the substrate 100 are located within the orthographic projections of the first light-shielding regions 511 on the substrate 100. Spaces are formed between the four first privacy-prevention units 3321 arranged in an array, and light-emitting gaps are formed between the corresponding first light-shielding regions 511. Compared to an integrated anti-peeping light-emitting portion 332, this prevents the privacy light in the central region of the anti-peeping light-emitting portion 332 from being completely blocked by the light-shielding units 510. This improves the light utilization efficiency and brightness of the anti-peeping light-emitting portion 332, and enhances the privacy-prevention effect of the display panel 10 and the display device.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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 privacy-preventing light-emitting portions, the privacy-preventing light-emitting portion including four first privacy-preventing units arranged in an array and spaced apart from each other; 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 formed on a side of the encapsulation layer away from the base substrate, the light shielding unit being arranged in a one-to-one correspondence with the anti-peeping light-emitting portion, the light shielding unit comprising a plurality of first light shielding regions spaced apart, an orthographic projection of the display light-emitting portion on the base substrate being spaced apart from an orthographic projection of the light shielding unit on the base substrate, and an orthographic projection of the first anti-peeping unit on the base substrate being located within an orthographic projection of the first light shielding region on the base substrate; The anti-peeping light-emitting portion also includes a second anti-peeping unit, which is arranged in the central area of ​​the pixel opening area corresponding to the anti-peeping light-emitting portion. Four first anti-peeping units surround the second anti-peeping unit and are arranged in an array along the row and column directions. Adjacent first anti-peeping units are separated by the pixel definition part. The shading unit also includes a second shading area. The orthographic projection of the second anti-peeping unit on the base substrate is located within the orthographic projection of the second shading area on the base substrate.

2. The display panel according to claim 1, wherein: The portion of the pixel opening area where the second privacy protection unit is located is connected to or spaced from the portion of the pixel opening area where the first privacy protection unit is located, and the second light-shielding area is connected to the first light-shielding area.

3. The display panel according to claim 1, wherein: The luminous color of the first privacy protection unit is the same as the luminous color of the second privacy protection unit.

4. The display panel according to claim 3, 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, 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 multiple pixel units, and the pixel unit includes one first light-emitting portion, one second light-emitting portion, and one third light-emitting portion. The anti-peep 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 1, wherein: The display panel also includes a conductor portion and an eaves portion, the conductor portion is formed between adjacent first anti-peeping units with different luminous colors and between adjacent first anti-peeping units and second anti-peeping units with different luminous colors, 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 both 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 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 light-emitting portion is provided in at least part of the pixel units, and the anti-peeping light-emitting portion is provided at the junction of at least part of the adjacent display light-emitting portions. The extension line of the junction line of at least part of the adjacent display light-emitting portions passes through the anti-peeping light-emitting portion, and at least part of the first anti-peeping unit is connected to the adjacent display light-emitting portion with the same luminous color.

7. The display panel according to claim 1, wherein: At least part of the edge of the orthographic projection of the light shielding unit on the base substrate is an arc-shaped edge.

8. The display panel according to claim 1, wherein: 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 luminous part 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 luminous part 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.

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.

Images