Display panel and display device

Abstract

The invention belongs to the field of display, and particularly relates to a display panel and a display device.The display panel comprises a substrate, a driving circuit layer, a pixel definition layer, a light-emitting layer, a packaging layer and a shading unit, and the driving circuit layer and the pixel definition layer are sequentially formed on one side of the substrate; the light-emitting layer is formed on a display light-emitting part and a peep-proof light-emitting part in a pixel opening area of the pixel definition layer, each peep-proof light-emitting part comprises four first peep-proof units which are arranged at intervals, and the packaging layer is formed on the sides, away from the substrate, of the pixel definition layer and the light-emitting layer. The shading units are arranged at intervals and formed on the side, away from the substrate, of the packaging layer, each shading unit comprises a plurality of first shading areas arranged at intervals, and the first shading areas shield the first peep-proof units. Compared with an integral peep-proof light-emitting part, the display panel has the advantages that the peep-proof light in the central area of the peep-proof light-emitting part can be prevented from being completely shielded by the shading unit, the light utilization rate and brightness of the peep-proof light-emitting part are improved, and the peep-proof effect of the display panel is enhanced.

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 have high clarity and wide viewing angle, which can generally reach 170 degrees, giving users a better visual experience. However, users sometimes also hope that the viewing angle of the display panel can be adjusted to a smaller size to effectively protect commercial secrets and personal privacy.

[0003] In order to achieve anti-peeping, the pixel units of some display panels include display pixels and anti-peeping pixels, and a shading structure is set above the anti-peeping pixels. In normal mode, the anti-peeping pixels are turned off and the display panel can display normally; in anti-peeping mode, the anti-peeping pixels are turned on, and the shading structure blocks the small-angle light of the anti-peeping pixels. The large-angle light of the anti-peeping pixels is not blocked, which can interfere with the display of the display pixels. In other words, in anti-peeping mode, the display image within the anti-peeping viewing angle is not disturbed, and the display image outside the anti-peeping viewing angle will be disturbed, thereby achieving large-angle anti-peeping.

[0004] The brightness of organic light-emitting diodes is highest at 0°, and the brightness decreases significantly as the angle increases. The light emitted by anti-peeping pixels at small angles is blocked by the shading structure, that is, the area with the highest brightness is blocked by the shading structure. Therefore, the brightness of anti-peeping pixels outside the anti-peeping viewing angle is low, affecting the anti-peeping 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] In order to achieve the above object, the present application provides a display panel, including 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 includes: A pixel definition layer is formed on the side of the driving circuit layer away from the base substrate, and the pixel definition layer includes a plurality of pixel opening areas and a pixel definition portion surrounding the pixel opening areas; A light-emitting layer is formed in the pixel opening area, the light-emitting layer includes a plurality of display light-emitting parts and a plurality of anti-peeping light-emitting parts, the anti-peeping light-emitting part includes four first anti-peeping 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 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, and 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.

[0007] Optionally, 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 of the first anti-peeping units surround the second anti-peeping unit and are arranged in an array along the row and column directions, and adjacent first anti-peeping units are separated by the pixel definition part, and the shading unit also includes a second shading area, and the orthographic projection of the second anti-peeping unit on the substrate is located within the orthographic projection of the second shading area on the substrate.

[0008] 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.

[0009] Optionally, the luminous color of the first anti-peeping unit is the same as the luminous color of the second anti-peeping unit.

[0010] Optionally, the multiple display light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the light-emitting efficiency of the first light-emitting unit is greater than the light-emitting efficiency of the second light-emitting unit, the light-emitting efficiency of the second light-emitting unit is greater than the light-emitting efficiency of the third light-emitting unit, the display panel includes a plurality of pixel units, the pixel unit includes one first light-emitting unit, one second light-emitting unit and one third light-emitting unit, and the anti-peep light-emitting unit is made of the same material as the first light-emitting unit or the second light-emitting unit.

[0011] Optionally, the display panel also includes a conductor portion and an eaves portion, the conductor portion is 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 is formed on a 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.

[0012] Optionally, the multiple display light-emitting parts include a first light-emitting part, a second light-emitting part, and a third light-emitting part. The luminous efficiency of the first light-emitting part is greater than that of the second light-emitting part, and the luminous efficiency of the second light-emitting part is greater than that of the third light-emitting part. The display panel includes multiple pixel units, and each pixel unit includes one first light-emitting part, one second light-emitting part, and one third light-emitting part. The first light-emitting part and the second light-emitting part are arranged at intervals in a first direction. The first light-emitting part and the second light-emitting part are located on one side of the third light-emitting part in a second direction perpendicular to the first direction. In the first direction, the whole of the first light-emitting part and the second light-emitting part is centered and aligned with the third light-emitting part; The anti-peeping light-emitting part is provided in at least part of the pixel units. The anti-peeping light-emitting part is provided at the junction of at least part of the adjacent display light-emitting parts. The extension line of the junction line of at least part of the adjacent display light-emitting parts passes through the anti-peeping light-emitting part. At least part of the first anti-peeping units are connected to the adjacent display light-emitting parts with the same emission color.

[0013] Optionally, at least part of the edges of the orthographic projection of the light-shielding unit on the substrate substrate are arc-shaped edges.

[0014] Optionally, the light-shielding unit includes a main body part and an auxiliary light-shielding part. The auxiliary light-shielding part is located on the side of the main body part away from the substrate substrate. The orthographic projection of the anti-peeping light-emitting part on the substrate substrate is located within the orthographic projection of the main body part on the substrate substrate. The orthographic projection of the main body part on the substrate substrate is located within the orthographic projection of the auxiliary light-shielding part on the substrate substrate. The main body part is used to define the light-emitting angle of the anti-peeping light-emitting part to form an anti-peeping viewing angle, and the auxiliary light-shielding part is used to block the diffracted light within the anti-peeping viewing angle.

[0015] This application also provides a display device, including: The display panel; A main board, connected to the display panel.

[0016] The display panel and the display device disclosed in this application have the following beneficial effects: In the present application, the display panel includes a substrate, a driving circuit layer, a pixel definition layer, a light-emitting layer, a packaging 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 is formed with a display light-emitting portion and an anti-peeking light-emitting portion within the pixel opening region. Each anti-peeking light-emitting portion includes four first anti-peeking units arranged at intervals. The packaging 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 packaging layer away from the substrate. The light-shielding unit includes a plurality of first light-shielding regions arranged at intervals. The orthographic projection of the first anti-peeking unit on the substrate is located within the orthographic projection of the first light-shielding region on the substrate. An interval is formed between the four first anti-peeking units arranged in an array, and a light-emitting gap is formed between the corresponding first light-shielding regions. Compared with the integral anti-peeking light-emitting portion, it can prevent the anti-peeking light in the central region of the anti-peeking light-emitting portion from being completely blocked by the light-shielding unit, improving the light utilization rate and brightness of the anti-peeking light-emitting portion and enhancing the anti-peeking effect of the display panel.

[0017] Other features and advantages of the present application will become apparent from the following detailed description, or will be learned in part through the practice of the present application.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 is a cross-sectional schematic view of the display panel in Embodiment 1 of the present application.

[0021] Figure 2 is a top view schematic view of the display panel in Embodiment 1 of the present application.

[0022] Figure 3 is a schematic view of the display panel with five anti-peeking units in Embodiment 1 of the present application.

[0023] Figure 4 is a schematic view of the connection of the anti-peeking units of the anti-peeking light-emitting portion in Embodiment 1 of the present application.

[0024] Figure 5 is a schematic view of a part of the edge of the light-shielding unit being arc-shaped in Embodiment 1 of the present application.

[0025] Figure 6Yes Figure 1 Schematic enlarged view of partial position A in the middle.

[0026] Figure 7 It is a schematic structural diagram of the display device in the second embodiment of the present application.

[0027] Explanation of reference numerals in the drawings: 10. Display panel; 20. Main board; 100. Substrate substrate; 200. Driving circuit layer; 310. Anode; 320. Pixel definition layer; 321. Pixel definition part; 322. Pixel opening area; 330. Light-emitting layer; 331. Display light-emitting part; 3311. First light-emitting part; 3312. Second light-emitting part; 3313. Third light-emitting part; 332. Anti-peeping light-emitting part; 3321. First anti-peeping unit; 3322. Second anti-peeping unit; 340. Cathode layer; 400. Encapsulation layer; 410. First inorganic encapsulation layer; 420. Organic encapsulation layer; 430. Second inorganic encapsulation layer; 510. Light-shielding unit; 510a. Main body part; 510b. Auxiliary light-shielding part; 511. First light-shielding area; 512. Second light-shielding area; 520. Color resist layer; 530. Organic filling layer; 610. Conductor part; 620. Eave part. Detailed implementation manners

[0028] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various 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 more complete and comprehensive, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0029] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0030] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted here 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 by referring to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0031] Example 1 Referring to Figure 1 and Figure 2 As shown, in this embodiment, the display panel 10 includes a substrate 100, a driving circuit layer 200, an anode 310, a pixel defining layer 320, a light-emitting layer 330, a cathode layer 340, a packaging layer 400, and a light-shielding unit 510. The driving circuit layer 200 is disposed on one side of the substrate 100. The substrate 100 includes a glass substrate, a polyimide (PI) substrate, etc. The driving circuit layer 200 includes a plurality of pixel driving circuits. A plurality of anodes 310 are formed on the side of the driving circuit layer 200 away from the substrate 100, and each anode 310 can be connected to a pixel driving circuit.

[0032] The pixel defining layer 320 is formed on the side of the driving circuit layer 200 away from the substrate 100. The pixel defining layer 320 includes a plurality of pixel opening regions 322 and a pixel defining portion 321 surrounding the pixel opening regions 322. That is, the pixel defining portion 321 defines the pixel opening regions 322. The pixel defining portion 321 covers the edge region of the anode 310, and the pixel opening regions 322 expose the central region of the anode 310.

[0033] The light-emitting layer 330 is at least formed in the pixel opening regions 322, and the light-emitting layer 330 is connected to the anode 310. The light-emitting layer 330 includes a plurality of display light-emitting portions 331 and a plurality of anti-peeping light-emitting portions 332. That is, both the display light-emitting portions 331 and the anti-peeping light-emitting portions 332 are disposed in the pixel opening regions 322. Each display light-emitting portion 331 is connected to an anode 310, and each anti-peeping light-emitting portion 332 is connected to an anode 310. The anodes 310 corresponding to the anti-peeping light-emitting portions 332 can be connected to each other. The cathode layer 340 is formed on the side of the pixel defining layer 320 and the light-emitting layer 330 away from the substrate 100.

[0034] In some embodiments, the light-emitting layer 330 further includes a non-light-emitting portion on the pixel defining portion 321 outside the pixel opening regions 322. The display light-emitting portions 331 and the anti-peeping light-emitting portions 332 are both connected to the non-light-emitting portion, which can be determined according to specific circumstances. Usually, 3 to 4 display light-emitting portions 331 form a pixel unit, and a plurality of pixel units are arranged in an array in the row direction and the column direction to display an image. Each anti-peeping light-emitting portion 332 includes four first anti-peeping units 3321 arranged at intervals. The four first anti-peeping units 3321 are arranged in an array in the row direction and the column direction. 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 region 322 and share one anode 310.

[0035] The encapsulation layer 400 is formed on the side of the cathode layer 340 away from the 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 arranged at intervals and formed on the side of the encapsulation layer 400 away from the substrate 100. The light-shielding units 510 are arranged in one-to-one correspondence with the anti-peeping light-emitting parts 332. The light-shielding units 510 can be made of a metal material or a black organic material. The light-shielding unit 510 includes a plurality of first light-shielding areas 511 arranged at intervals. The orthographic projection of the display light-emitting part 331 on the substrate 100 and the orthographic projection of the light-shielding unit 510 on the substrate 100 form an interval. The orthographic projection of the first anti-peeping unit 3321 on the substrate 100 is located within the orthographic projection of the first light-shielding area 511 on the substrate 100. The orthographic projection of the first anti-peeping unit 3321 on the substrate 100 and the orthographic projection of the first light-shielding area 511 on the substrate 100 are the same or substantially the same in shape.

[0036] The display modes of the display panel 10 include a normal mode and an anti-peeping mode. In the anti-peeping mode, both the display light-emitting part 331 and the anti-peeping light-emitting part 332 emit light. The light-shielding unit 510 blocks the small-angle light emission of the anti-peeping light-emitting part 332, and the large-angle light of the anti-peeping light-emitting part 332 is not blocked, which can interfere with the display screen of the display light-emitting part 331 to achieve large-angle anti-peeping. In the normal mode, the anti-peeping light-emitting part 332 does not emit light, and the display light-emitting part 331 emits light normally, and the display panel 10 can display normally. That is to say, in the anti-peeping mode, the display screen within the anti-peeping viewing angle a (usually about 25°) is not interfered, and the display screen outside the anti-peeping viewing angle a will be interfered, so as to achieve large-angle anti-peeping.

[0037] The organic light-emitting diode has the highest luminous brightness at 0°, and the brightness decreases significantly as the angle increases. The small-angle light emission of the anti-peeping light-emitting part 332 is blocked by the light-shielding unit 510, that is, the area with the highest luminous brightness is blocked by the light-shielding unit 510. Therefore, the brightness of the anti-peeping light-emitting part 332 outside the anti-peeping viewing angle is relatively low, which affects the anti-peeping effect of the display panel 10.

[0038] In this embodiment, the display panel 10 includes a substrate 100, a driving circuit layer 200, a pixel definition layer 320, a light-emitting layer 330, a packaging 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 substrate 100. The pixel definition layer 320 includes a plurality of pixel opening regions 322 and a pixel definition portion 321 surrounding the pixel opening regions 322. The light-emitting layer 330 includes a display light-emitting portion 331 and an anti-peeking light-emitting portion 332 formed in the pixel opening regions 322. Each anti-peeking light-emitting portion 332 includes four first anti-peeking units 3321 arranged at intervals. The packaging layer 400 is formed on the side of the pixel definition layer 320 and the light-emitting layer 330 away from the substrate 100. A plurality of light-shielding units 510 are arranged at intervals and formed on the side of the packaging layer 400 away from the substrate 100. The light-shielding unit 510 includes a plurality of first light-shielding regions 511 arranged at intervals. The orthographic projection of the first anti-peeking unit 3321 on the substrate 100 is located within the orthographic projection of the first light-shielding region 511 on the substrate 100. An interval is formed between the four first anti-peeking units 3321 arranged in an array, and a light-emitting gap is formed between the corresponding first light-shielding regions 511. Compared with the integral anti-peeking light-emitting portion 332, the anti-peeking light of the central region of the anti-peeking light-emitting portion 332 can be prevented from being completely blocked by the light-shielding unit 510, improving the light utilization rate and brightness of the anti-peeking light-emitting portion 332 and enhancing the anti-peeking effect of the display panel 10.

[0039] In some embodiments, the anti-peeking light-emitting portion 332 further includes a second anti-peeking unit 3322, as Figure 3 shown, the second anti-peeking unit 3322 is disposed in the central region of the pixel opening region 322 corresponding to the anti-peeking light-emitting portion 332. The four first anti-peeking units 3321 surround the second anti-peeking unit 3322 and are arranged in an array in the row direction and the column direction. The adjacent first anti-peeking units 3321 are separated by the pixel definition portion 321. The light-shielding unit 510 further includes a second light-shielding region 512. The orthographic projection of the second anti-peeking unit 3322 on the substrate 100 is located within the orthographic projection of the second light-shielding region 512 on the substrate 100.

[0040] An interval is formed between the four first anti-peeking units 3321 arranged in an array, and light-emitting gaps in the row direction and the column direction are formed between the corresponding first light-shielding regions 511. The second anti-peeking unit 3322 is disposed below the light-emitting gaps in the row direction and the column direction, which can improve the space utilization rate of the display panel 10. The anti-peeking light of the second anti-peeking unit 3322 can be emitted through the light-emitting gaps, improving the light utilization rate and brightness of the anti-peeking light-emitting portion 332 and enhancing the anti-peeking effect of the display panel 10.

[0041] In some embodiments, the orthographic projections of the first anti-peeping unit 3321 and the second anti-peeping unit 3322 on the substrate 100 are both rectangles. The ratio of the lengths of the adjacent sides of the rectangular orthographic projections of the first anti-peeping unit 3321 and the second anti-peeping unit 3322 ranges from 0.8 to 1.5, and the area ratio of the rectangular orthographic projections of the first anti-peeping unit 3321 and the second anti-peeping unit 3322 ranges from 0.8 to 1.5. As a preferred embodiment, the orthographic projections of the first anti-peeping unit 3321 and the second anti-peeping unit 3322 on the substrate 100 are both squares.

[0042] The orthographic projections of the first anti-peeping unit 3321 and the second anti-peeping unit 3322 on the substrate 100 are both rectangles, which can prevent the anti-peeping light in the central area of the anti-peeping unit from being completely blocked by the light-shielding unit 510, improving the light utilization rate and brightness of the anti-peeping light-emitting part 332.

[0043] In some embodiments, a gap is formed between the partial pixel opening area 322 where the second anti-peeping unit 3322 is located and the partial pixel opening area 322 where the first anti-peeping unit 3321 is located, and the second light-shielding area 512 is connected to the first light-shielding area 511. That is to say, light-emitting gaps are provided on both sides in the row direction and both sides in the column direction of the light-shielding unit 510. In other embodiments, the partial pixel opening area 322 where the second anti-peeping unit 3322 is located is connected to or overlaps with the partial pixel opening area 322 where the first anti-peeping unit 3321 is located. That is to say, the side lengths of the rectangular orthographic projection of the second anti-peeping unit 3322 in the row direction and the column direction can be set as needed to ensure that the anti-peeping light in the central area of the second anti-peeping unit 3322 can be emitted through the light-emitting gaps on both sides in the row direction and both sides in the column direction of the light-shielding unit 510.

[0044] The rectangular orthographic projections of the second anti-peeping unit 3322 and the first anti-peeping unit 3321 are connected or form a gap, enabling the size of the second anti-peeping unit 3322 to be maximized. The second light-shielding area 512 is connected to the first light-shielding area 511, which can improve the utilization rate of the space occupied by the light-shielding unit 510 on the display panel 10, facilitating the improvement of the pixel aperture ratio of the display panel 10.

[0045] In some embodiments, the multiple display light-emitting parts 331 include a first light-emitting part 3311, a second light-emitting part 3312, and a third light-emitting part 3313. The luminous efficiency of the first light-emitting part 3311 is greater than that of the second light-emitting part 3312, and the luminous efficiency of the second light-emitting part 3312 is greater than that of the third light-emitting part 3313. Exemplarily, the first light-emitting part 3311 can emit green light, the second light-emitting part 3312 can emit red light, and the third light-emitting part 3313 can emit blue light. The display panel 10 includes multiple pixel units, and each pixel unit includes at least one first light-emitting part 3311, at least one second light-emitting part 3312, and at least one third light-emitting part 3313.

[0046] The first light-emitting part 3311 and the second light-emitting part 3312 are arranged at intervals along the first direction. The first light-emitting part 3311 and the second light-emitting part 3312 are located on one side of the third light-emitting part 3313 in the second direction, and the second direction is perpendicular to the first direction. For example, the first direction is the row direction and the second direction is the column direction, and vice versa. In the first direction, the whole of the first light-emitting part 3311 and the second light-emitting part 3312 is centered and aligned with the third light-emitting part 3313. For example Figure 2 As shown, the distance between the left side of the first light-emitting part 3311 and the left side of the third light-emitting part 3313 is equal to the distance between the right side of the second light-emitting part 3312 and the right side of the third light-emitting part 3313. The anti-peeping light-emitting part 332 corresponds to each pixel unit one by one and is arranged at the junction of at least some adjacent display light-emitting parts 331. The edge of the display light-emitting part 331 close to the anti-peeping light-emitting part 332 is recessed inward to make way for the anti-peeping light-emitting part 332, and the extension line of the junction line of at least some adjacent display light-emitting parts 331 passes through the anti-peeping light-emitting part 332.

[0047] It should be noted that the anti-peeping light-emitting part 332 can be arranged corresponding to each pixel unit one by one, but it is not limited to this. The anti-peeping light-emitting part 332 can also be arranged only in some pixel units, and it can be determined according to the specific situation. The anti-peeping light-emitting part 332 can be arranged at the junction of at least some adjacent display light-emitting parts 331 of the pixel unit, but it is not limited to this. The anti-peeping light-emitting part 332 can also be arranged at the junction of adjacent pixel units, and it can be determined according to the specific situation.

[0048] The anti-peeping light-emitting part 332 is arranged at the junction of adjacent display light-emitting parts 331, which can avoid the anti-peeping light-emitting part 332 occupying too much area of a certain display light-emitting part 331 and affecting the display effect of the display panel 10.

[0049] In addition, since the shape of the anti-peeping light-emitting part 332 is different from the shape of the pixel unit, and the size of the anti-peeping light-emitting part 332 is also different from the size of the pixel unit. If the anti-peeping light-emitting part 332 is arranged outside the pixel unit, it will cause waste of the design space of the display panel 10 and affect the aperture ratio and pixel density of the display panel 10. In this application, the anti-peeping light-emitting part 332 is arranged at the junction of adjacent display light-emitting parts 331, that is, the anti-peeping light-emitting part 332 is correspondingly arranged in each pixel unit, which solves the arrangement problem of the anti-peeping light-emitting part 332 and the pixel unit, avoids waste of the design space of the display panel 10, and improves the aperture ratio and pixel density of the display panel 10.

[0050] Exemplarily, the anti-peeping light-emitting part 332 is arranged at the junction of the first light-emitting part 3311, the second light-emitting part 3312 and the third light-emitting part 3313, as Figure 2 shown.

[0051] The anti-peeping light-emitting part 332 is arranged at the junction of the three display light-emitting parts 331. The area occupied by the anti-peeping light-emitting part 332 in each display light-emitting part 331 is not too large, which can improve the display effect of the display panel 10.

[0052] In some embodiments, the anti-peeping light-emitting part 332 is located at the junction of the first light-emitting part 3311 and the second light-emitting part 3312.

[0053] The luminous efficiency of the third light-emitting part 3313 is the lowest, and usually the occupied area of the third light-emitting part 3313 is the largest. The anti-peeping light-emitting part 332 is arranged at the junction of the first light-emitting part 3311 and the second light-emitting part 3312, without occupying the design space of the third light-emitting part 3313 with the lowest luminous efficiency, which is beneficial to improving the brightness and service life of the third light-emitting part 3313.

[0054] It should be noted that the anti-peeping light-emitting part 332 can be arranged at the junction of the first light-emitting part 3311, the second light-emitting part 3312 and the third light-emitting part 3313 or at the junction of the first light-emitting part 3311 and the second light-emitting part 3312, but not limited thereto. The anti-peeping light-emitting part 332 can also be arranged at the junction of the second light-emitting part 3312 and the third light-emitting part 3313, and the specific situation can be determined according to the actual situation.

[0055] In some embodiments, the display panel 10 further includes a conductor part 610 and an eaves part 620. The conductor part 610 is formed on the side of the pixel defining part 321 away from the substrate 100, and the eaves part 620 is formed on the side of the conductor part 610 away from the substrate 100. The eaves part 620 protrudes relative to the conductor part 610, so that a recessed area is formed between the eaves part 620 and the pixel defining part 321. The recessed area is located on both sides of the conductor part 610 opposite to the pixel opening area 322. The light-emitting layer 330 and the cathode layer 340 are both formed by evaporation. The eaves part 620 is used to block the light-emitting layer 330, and the conductor part 610 is used to connect the cathode layer 340.

[0056] It should be noted that the display panel 10 may include a conductor part 610 and an eaves part 620 for forming the light-emitting layer 330 and the cathode layer 340, but not limited thereto. The light-emitting layer 330 can also be formed by evaporation using a fine metal mask (FMM). The cathode layer 340 covers the pixel defining layer 320 and the light-emitting layer 330 entirely, and the specific situation can be determined according to the actual situation.

[0057] With the improvement of the resolution of the display panel 10, when using a fine metal mask to evaporate the light-emitting layer 330, the manufacturing cost of the fine metal mask is relatively high, and it is difficult to achieve high-precision mesh stretching technology and evaporation alignment technology. The display panel 10 includes a conductor part 610 and an eaves part 620 for forming the light-emitting layer 330 and the cathode layer 340, without the need for a fine metal mask, which is beneficial to reducing the process difficulty and process cost.

[0058] In some embodiments, among the four first anti-peeking units 3321 and one second anti-peeking unit 3322 of the anti-peeking light-emitting part 332, the light-emitting colors of adjacent first anti-peeking units 3321 may be different; the light-emitting colors of adjacent first anti-peeking units 3321 and second anti-peeking units 3322 may be different. The conductor part 610 and the eaves part 620 are also formed between adjacent first anti-peeking units 3321 with different light-emitting colors and between adjacent first anti-peeking units 3321 and second anti-peeking units 3322 with different light-emitting colors.

[0059] The anti-peeking light of the anti-peeking light-emitting part 332 is formed by mixing the anti-peeking lights of 5 anti-peeking units. The light-emitting colors of the anti-peeking units of the anti-peeking light-emitting part 332 may be different. The anti-peeking light-emitting part 332 may be composed of any two or three combinations of red anti-peeking units, green anti-peeking units, and blue anti-peeking units, forming an anti-peeking light-emitting part 332 with various light-emitting colors such as yellow and white. The anti-peeking light-emitting part 332 has a greater brightness, and the anti-peeking light and the display light are more likely to form a visual contrast, thereby improving the anti-peeking effect.

[0060] In addition, the adjacent first anti-peeking units 3321 with different light-emitting colors and the adjacent first anti-peeking units 3321 and second anti-peeking units 3322 with different light-emitting colors are separated by the conductor part 610 and the eaves part 620, which can avoid light crosstalk between adjacent anti-peeking units.

[0061] In some embodiments, at least part of the first anti-peeking units 3321 are connected to the adjacent display light-emitting part 331 with the same light-emitting color. For example, part of the first anti-peeking units 3321 may be connected to the first light-emitting part 3311, and part of the first anti-peeking units 3321 may be connected to the second light-emitting part 3312. In addition, there may also be part of the first anti-peeking units 3321 that can be connected to the third light-emitting part 3313. It should be understood that whether the first anti-peeking unit 3321 is connected to the adjacent display light-emitting part 331 can be determined according to the light-emitting color of the first anti-peeking unit 3321 as the case may be.

[0062] At least part of the first anti-peeking units 3321 are connected to the adjacent display light-emitting part 331 with the same light-emitting color, and the conductor part 610 and the eaves part 620 between the first anti-peeking unit 3321 and the connected display light-emitting part 331 can be omitted, thereby improving the pixel aperture ratio to a certain extent.

[0063] In some embodiments, the light-emitting color of the first anti-peeking unit 3321 is the same as the light-emitting color of the second anti-peeking unit 3322. The first anti-peeking unit 3321 and the second anti-peeking unit 3322 are connected, and the adjacent first anti-peeking units 3321 are connected.

[0064] The anti-peeping light-emitting part 332 is split into 5 anti-peeping units. The size of the anti-peeping units is small. The light-emitting color of the first anti-peeping unit 3321 is the same as that of the second anti-peeping unit 3322. The anti-peeping light-emitting part 332 is formed by evaporating a kind of organic light-emitting material, which can reduce the manufacturing difficulty and cost of the anti-peeping light-emitting part 332. In addition, only the pixel definition part 321 is arranged between adjacent first anti-peeping units 3321. As Figure 4 shown, the conductor part 610 and the eaves part 620 can be omitted, thereby improving the pixel aperture ratio to a certain extent.

[0065] In some embodiments, the manufacturing material of the anti-peeping light-emitting part 332 is the same as that of the first light-emitting part 3311 or the second light-emitting part 3312.

[0066] The manufacturing material of the anti-peeping light-emitting part 332 is the same as that of the first light-emitting part 3311, and the light-emitting color of the anti-peeping light-emitting part 332 is the same as that of the first light-emitting part 3311. The first light-emitting part 3311 has the highest light-emitting efficiency, and the brightness of the first light-emitting part 3311 is the largest under the same data voltage. The light-emitting color of the anti-peeping light-emitting part 332 is the same as that of the first light-emitting part 3311, and the occupied area of the anti-peeping light-emitting part 332 is smaller, and the influence on the resolution of the display panel 10 is the smallest.

[0067] It should be noted that the light-emitting color of the anti-peeping light-emitting part 332 can be the same as that of the first light-emitting part 3311, but not limited to this. The light-emitting color of the anti-peeping light-emitting part 332 can also be the same as that of the second light-emitting part 3312, which can be determined according to the specific situation. In some embodiments, the light-emitting color of the anti-peeping light-emitting part 332 can also be the same as that of the third light-emitting part 3313.

[0068] Since the anti-peeping light-emitting part 332 does not emit light in the normal mode, when the ratio of the occupied area of the anti-peeping light-emitting part 332 to the occupied area of the first light-emitting part 3311 is relatively large, the brightness difference between the first light-emitting part 3311 and the anti-peeping light-emitting part 332 is obvious, which has a great influence on the display effect of the display panel 10. The light-emitting color of the anti-peeping light-emitting part 332 is the same as that of the second brightest display light-emitting part 331 (i.e., the second light-emitting part 3312), which can reduce the brightness difference between the anti-peeping light-emitting part 332 and the second light-emitting part 3312 and reduce the influence on the display effect of the display panel 10.

[0069] In some embodiments, the anti-peeping light-emitting part 332 includes the manufacturing materials of at least any two of the first light-emitting part 3311, the second light-emitting part 3312, and the third light-emitting part 3313, and the anti-peeping light-emitting part 332 is a stack of two or three organic light-emitting materials. For example, the anti-peeping light-emitting part 332 includes the manufacturing material of the first light-emitting part 3311 and the manufacturing material of the second light-emitting part 3312, and the light-emitting color of the anti-peeping light-emitting part 332 is yellow; the anti-peeping light-emitting part 332 includes the manufacturing material of the first light-emitting part 3311, the manufacturing material of the second light-emitting part 3312, and the manufacturing material of the third light-emitting part 3313, and the light-emitting color of the anti-peeping light-emitting part 332 is white.

[0070] The light-emitting color of the anti-peeping light-emitting part 332 is yellow or white. The anti-peeping light-emitting part 332 has a greater brightness, and it is easier to form a visual contrast between the anti-peeping light and the display light, thereby improving the anti-peeping effect.

[0071] In some embodiments, at least part of the edge of the orthographic projection of the light-shielding unit 510 on the substrate 100 is an arc edge, as Figure 5 shown. For example, the light-shielding unit 510 is composed of four first light-shielding regions 511 and one second light-shielding region 512. When both the first light-shielding region 511 and the second light-shielding region 512 are rounded rectangles, part of the edge of the light-shielding unit 510 formed by the combination of the first light-shielding region 511 and the second light-shielding region 512 is an arc edge; when both the first light-shielding region 511 and the second light-shielding region 512 are circular, all the edges of the light-shielding unit 510 formed by the combination of the first light-shielding region 511 and the second light-shielding region 512 are arc edges.

[0072] In some technical solutions, when the display panel 10 displays a picture in the anti-peeping mode, the user can also see part of the anti-peeping light-emitting part 332 within the anti-peeping viewing angle a. That is, the light of the anti-peeping light-emitting part 332 that is not expected to appear within the anti-peeping viewing angle a interferes with the light of the display light-emitting part 331, affecting the display effect of the display panel 10 within the anti-peeping viewing angle a. The anti-peeping viewing angle a is determined by the light-shielding angle of the light-shielding unit 510. The larger the light-shielding range of the light-shielding unit 510, the larger the anti-peeping viewing angle a. The applicant found that the user can also see part of the anti-peeping light-emitting part 332 within the anti-peeping viewing angle a because part of the anti-peeping light bypasses the light-shielding unit 510 acting as an obstacle and continues to propagate.

[0073] At least part of the edge of the light-shielding unit 510 being an arc edge can reduce the intensity of diffracted light, reduce or eliminate the anti-peeping light that is not expected to appear 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.

[0074] In some embodiments, the light-shielding unit 510 includes a main body part 510a and an auxiliary light-shielding part 510b, as Figure 6As shown, the auxiliary light-shielding portion 510b is located on the side of the main body portion 510a away from the substrate 100. The orthographic projection of the anti-peeping light-emitting portion 332 on the substrate 100 is located within the orthographic projection of the main body portion 510a on the substrate 100, and the orthographic projection of the main body portion 510a on the substrate 100 is located within the orthographic projection of the auxiliary light-shielding portion 510b on the substrate 100. The main body portion 510a is used to define the light-emitting angle of the anti-peeping light-emitting portion 332 to form an anti-peeping viewing angle a, and the auxiliary light-shielding portion 510b is used to block the diffracted light within the anti-peeping viewing angle a. It should be understood that the light-shielding unit 510 includes a first light-shielding region 511 and a second light-shielding region 512, and each light-shielding region is composed of two layers, namely the main body portion 510a and the auxiliary light-shielding portion 510b.

[0075] The light-shielding unit 510 includes a main body portion 510a and an auxiliary light-shielding portion 510b. The auxiliary light-shielding portion 510b blocks the diffracted light within the anti-peeping viewing angle a, which can 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.

[0076] In some embodiments, the display panel 10 further includes a color filter layer 520. The color filter layer 520 is formed on the side of the encapsulation layer 400 away from the substrate 100, and the orthographic projection of the display light-emitting portion 331 on the substrate 100 is located within the orthographic projection of the color filter layer 520 on the substrate 100. The color filter layer 520 may include green color filters, red color filters, and blue color filters that are arranged at intervals. The green color filters are arranged in one-to-one correspondence with the first light-emitting portions 3311, the red color filters are arranged in one-to-one correspondence with the second light-emitting portions 3312, and the blue color filters are arranged in one-to-one correspondence with the third light-emitting portions 3313. The display panel 10 further includes a black matrix, and the black matrix is formed on the side of the encapsulation layer 400 away from the substrate 100 and is located in the surrounding areas of the green color filters, red color filters, and blue color filters. A light-emitting gap is formed between the light-shielding unit 510 and the color filter layer 520 and the black matrix. The light-emitting gap surrounds the light-shielding unit 510, and a transparent organic filling layer 530 may be provided in the light-emitting gap.

[0077] In order to improve the contrast of the display panel 10 and achieve an integrated black effect, the display panel 10 usually uses a polarizer (POL). The polarizer can effectively reduce the reflection intensity of external ambient light on the screen. However, the light transmittance of the polarizer is generally only about 44%. In order to achieve a higher light-emitting brightness, more power consumption is required. In addition, the polarizer has a large thickness and a brittle material, which is not conducive to the development of dynamic bending products.

[0078] 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 part 331, reducing the reflection intensity of external ambient light on the screen. The polarizer of the display panel 10 can be cancelled. Not only will the thickness of the display panel 10 be greatly reduced, but also the light extraction rate can be increased from 44% to 80%, greatly increasing the light emission brightness. Thus, the power consumption of the display panel 10 is reduced.

[0079] Embodiment 2 See Figure 7 As shown, in this embodiment, the display device includes a display panel 10 and a main board 20. The main board 20 is connected to the display panel 10, and the display panel 10 includes the display panel 10 disclosed in Embodiment 1.

[0080] In this embodiment, the display device includes a display panel 10. The display panel 10 includes a substrate 100, a driving circuit layer 200, a pixel definition layer 320, a light-emitting layer 330, a packaging 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 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 forms a display light-emitting part 331 and an anti-peeping light-emitting part 332 within the pixel opening areas 322. Each anti-peeping light-emitting part 332 includes four first anti-peeping units 3321 arranged at intervals. The packaging layer 400 is formed on the side of the pixel definition layer 320 and the light-emitting layer 330 away from the substrate 100. A plurality of light-shielding units 510 are arranged at intervals and formed on the side of the packaging layer 400 away from the substrate 100. The light-shielding unit 510 includes a plurality of first light-shielding areas 511 arranged at intervals. The orthographic projection of the first anti-peeping unit 3321 on the substrate 100 is located within the orthographic projection of the first light-shielding area 511 on the substrate 100. An interval is formed between the four first anti-peeping units 3321 arranged in an array, and a light extraction gap is formed between the corresponding first light-shielding areas 511. Compared with the integral anti-peeping light-emitting part 332, it can prevent the anti-peeping light in the central area of the anti-peeping light-emitting part 332 from being completely blocked by the light-shielding unit 510, improving the light utilization rate and brightness of the anti-peeping light-emitting part 332 and enhancing the anti-peeping effect of the display panel 10 and the display device.

[0081] Terms such as "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more, unless otherwise specifically defined.

[0082] In this application, unless otherwise clearly specified and defined, terms such as "assembly" and "connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0083] In the description of this specification, the descriptions referring to terms such as "some embodiments" and "exemplarily" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0084] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on this application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and the description of this application shall fall within the scope covered by the patent of this 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 the side of the driving circuit layer away from the base substrate, and the pixel definition layer includes a plurality of pixel opening areas and a pixel definition portion surrounding the pixel opening areas; A light-emitting layer is formed in the pixel opening area, the light-emitting layer includes a plurality of display light-emitting parts and a plurality of anti-peeping light-emitting parts, the anti-peeping light-emitting part includes four first anti-peeping 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 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, and 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.

2. The display panel according to claim 1, characterized in that: 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 of the first anti-peeping units surround the second anti-peeping unit and are arranged in an array along the row and column directions, and adjacent first anti-peeping units are separated by the pixel definition part, and the shading unit also includes a second shading area, and the orthographic projection of the second anti-peeping unit on the substrate is located within the orthographic projection of the second shading area on the substrate.

3. The display panel according to claim 2, characterized in that: The portion of the pixel opening area where the second anti-peeping unit is located is connected to or spaced from the 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.

4. The display panel according to claim 2, characterized in that: The luminous color of the first anti-peeping unit is the same as the luminous color of the second anti-peeping unit.

5. The display panel according to claim 4, characterized in that: The multiple display light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the light-emitting efficiency of the first light-emitting unit is greater than the light-emitting efficiency of the second light-emitting unit, the light-emitting efficiency of the second light-emitting unit is greater than the light-emitting efficiency of the third light-emitting unit, the display panel includes a plurality of pixel units, the pixel units include one first light-emitting unit, one second light-emitting unit and one third light-emitting unit, and the anti-peep light-emitting unit is made of the same material as the first light-emitting unit or the second light-emitting unit.

6. The display panel according to claim 2, characterized in that: The display panel also includes a conductor portion and an eaves portion, the conductor portion is 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 is formed on a 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.

7. The display panel according to claim 6, characterized in that: The multiple display light-emitting parts include a first light-emitting part, a second light-emitting part and a third light-emitting part, the light-emitting efficiency of the first light-emitting part is greater than the light-emitting efficiency of the second light-emitting part, the light-emitting efficiency of the second light-emitting part is greater than the light-emitting efficiency of the third light-emitting part, the display panel includes a plurality of pixel units, the pixel unit includes one first light-emitting part, one second light-emitting part and one third light-emitting part, the first light-emitting part and the second light-emitting part are arranged at intervals along a first direction, the first light-emitting part and the second light-emitting part are located on one side of the third light-emitting part in a second direction, the second direction is perpendicular to the first direction, and in the first direction, the first light-emitting part and the second light-emitting part are aligned with the third light-emitting part 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, and 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 light-emitting color.

8. The display panel according to claim 1, characterized in that: At least part of the edge of the orthographic projection of the shading unit on the base substrate is an arc-shaped edge.

9. The display panel according to claim 1, characterized in that: The shading unit includes a main body and an auxiliary shading portion, the auxiliary shading portion is located on the side of the main body away from the base substrate, the orthographic projection of the anti-peeping luminous portion 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 portion on the base substrate, the main body is used to limit the light output angle of the anti-peeping luminous portion to form an anti-peeping viewing angle, and the auxiliary shading portion is used to block the diffracted light within the anti-peeping viewing angle.

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

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