CN117529175A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN117529175A
CN117529175A CN202311360793.3A CN202311360793A CN117529175A CN 117529175 A CN117529175 A CN 117529175A CN 202311360793 A CN202311360793 A CN 202311360793A CN 117529175 A CN117529175 A CN 117529175A
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CN
China
Prior art keywords
light
display panel
light emitting
substrate
grating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311360793.3A
Other languages
Chinese (zh)
Inventor
宋文峰
张�荣
姜博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan Govisionox Optoelectronics Co Ltd
Hefei Visionox Technology Co Ltd
Original Assignee
Kunshan Govisionox Optoelectronics Co Ltd
Hefei Visionox Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunshan Govisionox Optoelectronics Co Ltd, Hefei Visionox Technology Co Ltd filed Critical Kunshan Govisionox Optoelectronics Co Ltd
Priority to CN202311360793.3A priority Critical patent/CN117529175A/en
Publication of CN117529175A publication Critical patent/CN117529175A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G09F9/335—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/856—Arrangements for extracting light from the devices comprising reflective means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/878—Arrangements for extracting light from the devices comprising reflective means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses

Abstract

The application provides a display panel and a display device, wherein the display panel comprises a substrate, a light-emitting device layer, an anti-peeping structure and a reflecting layer; a light emitting device layer provided on one side of the substrate, the light emitting device including a plurality of light emitting elements; the peep-proof structure is arranged on one side, deviating from the substrate, of the light-emitting device layer and comprises a plurality of shading parts arranged at intervals, at least part of the shading parts are provided with through holes penetrating through the substrate along the thickness direction, and the light-transmitting parts are arranged on the through holes. The reflecting layer is arranged on one side of the peep-proof structure, which faces the light-emitting device layer. The display panel provided by the application is beneficial to improving the brightness and the color gamut of the display panel on the premise of realizing the peeping prevention function of the display panel, and further improving the display effect of the display panel.

Description

Display panel and display device
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The display panel has the advantages of flat panel, low power consumption, no electromagnetic radiation, high resolution, high contrast, easy integration, light weight, portability and the like, and is widely applied to electronic equipment such as mobile phones, flat panels, displays, televisions and the like. Along with the development of display technology, the display panel is not only a carrier for conveying text information to spread, and can realize multiple functions such as traffic positioning, mobile payment, video chat, mailing and the like, so that people are provided with rich personal experiences and communication at any time and any place, and the problem of personal privacy protection is gradually becoming the rigidity requirement of consumers, and the peeping-preventing display panel is also generated.
In the related art, many new technical schemes are provided for privacy protection, and an attempt is made to provide better privacy protection experience for consumers. However, in practice, the display panel satisfies the peep-proof function, but the display effect is poor.
Disclosure of Invention
The application provides a display panel and display device, is favorable to improving display panel's display effect under the prerequisite of realizing display panel's peep-proof function.
In a first aspect, a display panel provided according to an embodiment of the present application includes a substrate, a light emitting device layer, a peep-proof structure, and a reflective layer; a light emitting device layer provided on one side of the substrate, the light emitting device including a plurality of light emitting elements; the peep-proof structure is arranged on one side of the light-emitting device layer, which is away from the substrate, and comprises a plurality of shading parts and light-transmitting parts which are arranged at intervals, at least part of the shading parts are provided with through holes which penetrate through the light-emitting parts along the thickness direction, and the light-transmitting parts are arranged on the through holes; the reflecting layer is arranged on one side of the peep-proof structure, which faces the light-emitting device layer.
In some embodiments, each light shielding portion is provided with a through hole, and each through hole is provided with a light transmitting portion.
In some embodiments, the material of the light-transmitting portion includes at least one of smoke tin oxide and smoke zinc oxide.
In some embodiments, the thickness h of the light transmitting portion, the distance m between the light transmitting portion and the light emitting element in the thickness direction, and the minimum dimension n of the light emitting element in the direction perpendicular to the thickness direction satisfy: (h+m)/n is more than or equal to 0.58 and less than 1.73;
in some embodiments, 1 μm.ltoreq.h.ltoreq.3 μm.
In some embodiments, the light shielding portion has a first surface, a second surface and a side surface, the first surface is located on a side of the light shielding portion adjacent to the light emitting device layer, the second surface is located on a side of the light shielding portion facing away from the light emitting device layer, and the side surface connects the first surface and the second surface; the side surfaces are arranged obliquely outwards in a direction facing away from the base plate.
In some embodiments, at least a portion of the front projection of the light shielding portion on the substrate at least partially overlaps with the front projection of the light emitting element on the substrate.
In some embodiments, the light shielding portions are strip-shaped and extend along a first direction, and the light shielding portions are arranged at intervals along a second direction, wherein the first direction, the second direction and the thickness direction intersect each other.
In some embodiments, the light shielding portions are in a block shape, and the light shielding portions are arranged in an array along a first direction and a second direction, where the first direction, the second direction, and the thickness direction intersect each other.
In some embodiments, two rows of light shielding portions adjacent along the second direction are offset.
In some embodiments, the peep-proof structure further includes a transmission portion disposed between adjacent light shielding portions, the transmission portion being configured to enhance and radiate the brightness of the light emitted from the light emitting element.
In some embodiments, the orthographic projection of at least part of the transmissive portion on the substrate is located within the orthographic projection of the light emitting element on the substrate.
In some embodiments, the transmissive portion comprises a transmissive grating.
In some embodiments, the transmission grating includes a grating portion and a gap portion, the gap portion being located between adjacent two grating portions, the material of the grating portions including at least one of silver and aluminum.
In some embodiments, the transmission grating includes a plurality of grating portions arranged in an array along a first direction and a second direction, the first direction intersecting the second direction.
In some embodiments, the grating portions extend in a first direction and are arranged in a second direction, the first and second directions intersecting.
In some embodiments, in the second direction, the dimension e of the grating portion satisfies and the dimension p of the gap portion satisfies: e/p is more than 0.3 and less than 0.5.
In some embodiments, 90 nm.ltoreq.e.ltoreq.110 nm.
In some embodiments, 100 nm.ltoreq.p.ltoreq.400 nm.
In some embodiments, the display panel further includes a planarization layer, wherein the planarization layer is filled between the light shielding portions and disposed on a side of the peep-proof structure facing away from the display panel.
In some embodiments, the light transmittance T of the planarizing layer satisfies: t is more than or equal to 60% and less than or equal to 90%.
In a second aspect, an embodiment of the present application provides a display device, including a display panel provided in any one of the foregoing embodiments.
The display panel and the display device provided by the embodiment of the application, a plurality of shading parts are arranged at one side of the light-emitting device layer, which is away from the substrate, at least part of shading parts are provided with through holes penetrating along the thickness direction, the light transmission parts are arranged in the through holes, the light transmission parts can enable part of light emitted by the light-emitting element to exit through the refraction of the light transmission parts, and the other part of the light exits after the reflection of the light transmission parts, so that the brightness and the color gamut of the display panel are improved under the premise of realizing the peeping prevention function of the display panel, and the display effect of the display panel is improved.
Drawings
Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
Fig. 1 is a front view of a display panel according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of FIG. 1 taken along line A-A;
FIG. 3 is another cross-sectional schematic view of the structure of FIG. 1 taken along line A-A;
FIG. 4 is a schematic view of a further cross-sectional structure taken along line A-A of FIG. 1;
fig. 5 is a schematic top view of a part of a structure of a display panel according to an embodiment of the present disclosure;
fig. 6 is a schematic top view of a part of a structure of a display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic top view of a part of a structure of a display panel according to an embodiment of the present disclosure;
fig. 8 is a front view of a display device according to an embodiment of the present application.
In the drawings, the drawings are not necessarily to scale.
Reference numerals illustrate:
100. a display panel;
110. a substrate;
120. a light emitting device layer; 121. a light emitting element;
130. a peep-proof structure; 131. a light shielding section; 131a, through holes; 1311. a first surface; 1312. a second surface; 1313. a side surface; 132. a light transmitting portion;
140. a reflective layer;
150. a transmission section; 151. a grating; 1511. a grating section; 1512. a gap portion;
160. a planarization layer;
170. an encapsulation layer;
180. a cover plate;
10. a display device;
x, a first direction; y, second direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Further, for the sake of understanding and ease of description, the size and thickness of each configuration shown in the drawings are arbitrarily shown, but the present application concept is not limited thereto. In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. In the figures, the thickness of some layers and regions are exaggerated for better understanding and ease of description.
It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Furthermore, throughout the specification, the word "on" the target element means positioned above or below the target element, and does not necessarily mean positioned "at the upper side" based on the direction of gravity.
Moreover, unless explicitly described to the contrary, the word "comprising" will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
The display panel is widely applied to electronic devices such as mobile phones and tablet computers, in order to realize the peeping function of the display panel, such as an OLED (Organic Light Emitting Diode ) display panel, a peeping prevention structure is generally arranged on one side of a light emitting device layer, facing a light emitting surface of the display panel, so as to block the outgoing light of a larger angle emitted by the light emitting device layer, and realize the peeping function of the display panel.
In view of this, the embodiments of the present application provide a display panel and a display device, and embodiments of the display panel and the display device will be described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a display panel 100 provided according to an embodiment of the present application includes a substrate 110, a light emitting device layer 120, a peep-proof structure 130, and a reflective layer 140. The light emitting device layer 120 is provided on one side of the substrate 110, and the light emitting device includes a plurality of light emitting elements 121. The peep-proof structure 130 is disposed on a side of the light emitting device layer 120 away from the substrate 110, the peep-proof structure 130 includes a plurality of light shielding portions 131 and a light transmitting portion 132 disposed at intervals, at least a portion of the light shielding portions 131 have a through hole 131a penetrating through the light shielding portions in a thickness direction, and the light transmitting portion 132 is disposed on the through hole 131a. The reflective layer 140 is disposed on a side of the peep-proof structure 130 facing the light emitting device layer 120. The reflective layer 140 may be specifically disposed on a side of the light-emitting functional layer of the light-emitting element 121 facing away from the peep-preventing structure 130; or an electrode having a reflection function.
The substrate 110 may include an insulating material such as PI (Polyimide), and the substrate 110 may further include a pixel driving circuit electrically connected to the light emitting element 121 of the light emitting device layer 120 to drive the light emitting element 121 to emit light.
The light emitting device layer 120 includes a plurality of spaced light emitting elements 121, and the light emitting elements 121 of the light emitting device layer 120 may be arranged in an array and emit red light, green light, blue light, or the like, respectively.
The peep-proof structure 130 includes a plurality of light shielding portions 131 disposed at intervals, and then the light shielding portions 131 may be located on a side of the light emitting element 121 facing away from the substrate 110, that is, the front projection of the light shielding portions 131 on the substrate 110 at least partially overlaps the front projection of the light emitting element 121 on the substrate 110. Alternatively, the front projection of the light shielding portion 131 on the substrate 110 is offset from the front projection of the light emitting element 121 on the substrate 110.
The plurality of light shielding portions 131 may be arranged in an array, the material of the light shielding portions 131 may include black foam, and the light shielding portions 131 may shield the outgoing light of a larger angle emitted by at least a portion of the light emitting elements 121, so as to shield the outgoing light of a larger angle of the light emitting elements 121 of the display panel 100, so that people can hardly distinguish the picture displayed by the display panel 100 under the condition of a larger viewing angle, so as to realize the peeping function of the display panel 100.
At least part of the light shielding portions 131 has a through hole 131a penetrating in the thickness direction, and the light transmitting portion 132 is provided in the through hole 131a, it is possible to provide a part of the plurality of light shielding portions 131 with the through hole 131a and provide the light transmitting portion 132 in the through hole 131a, or to provide each of the light shielding portions 131 with the through hole 131a and provide the light transmitting portion 132 in the through hole 131a of each of the light shielding portions 131.
After the light emitted from the light emitting element 121 enters the light transmitting portion 132, a part of the incident light is refracted by the light transmitting portion 132 and emitted, and the other part is reflected by the light transmitting portion 132 and emitted to the reflective layer 140, and is repeatedly reflected between the reflective layer 140 and the light transmitting portion 132, and finally emitted after being refracted by the light transmitting portion 132. The light transmitting portion 132 may be made of a transparent or translucent material.
The reflective layer 140 may be a film layer separately provided so that the light emitted from the light emitting element 121 is repeatedly reflected between the reflective layer 140 and the light transmitting portion 132 and finally emitted through the light transmitting portion 132. The functional film layer in the display panel 100 may be used as the reflective layer 140, for example, a metal wiring in the substrate 110 of the display panel 100, or the reflective layer 140 may be a cathode or anode corresponding to the light emitting element 121, so long as the incident light to the reflective layer 140 can be reflected.
Alternatively, one light-transmitting portion 132 may be disposed in one through hole 131a, and one light-transmitting portion 132 is disposed to fill the through hole 131a, or a plurality of light-transmitting portions 132 may be disposed at intervals in one through hole 131a, which may be selected according to actual needs, without limitation.
In this way, when the light emitted from the light emitting element 121 is emitted to the through hole 131a of the light shielding portion 131, the light can be emitted at a smaller angle after being refracted by the light transmitting portion 132, and after the light emitted from the light emitting element 121 is emitted to the through hole 131a of the light shielding portion 131, the light is repeatedly reflected between the light transmitting portion 132 and the reflective layer 140, and finally emitted to the light transmitting portion 132 at a smaller angle, so that the display brightness of the light emitting element 121 is improved on the premise of realizing the peeping function of the display panel 100, and the display brightness of the display panel 100 is further improved.
In addition, for the light emitted by the light emitting element 121 to the light transmitting portion 132 at a larger angle, the light is repeatedly reflected between the reflective layer 140 and the light transmitting portion 132, which is favorable for enhancing the micro-cavity adjusting effect on the light emitted by the light emitting element 121, increasing the purity of the light emitted by the light emitting element 121, and improving the overall color gamut of the display panel 100, so that the color displayed by the display panel 100 is more vivid, and the wide color gamut display of the display panel 100 can provide the outdoor CGM with a greater flexibility in dynamic color gamut adjustment, i.e., exhibit a better display effect.
In the display panel 100 provided in this embodiment, a plurality of light shielding portions 131 are disposed at a side of the light emitting device layer 120 away from the substrate 110 at intervals, at least a portion of the light shielding portions 131 have through holes 131a penetrating along a thickness direction, the light transmitting portions 132 are disposed in the through holes 131a, the reflective layer 140 is disposed on one side of the peep-proof structure 130 facing the light emitting device layer 120 (the reflective layer 140 may be specifically disposed on one side of the light emitting function layer of the light emitting element 121 away from the peep-proof structure 130; or may be an electrode with a reflective function), and a portion of light emitted by the light emitting element 121 exits through the light transmitting portions 132, and another portion exits through the light transmitting portions 132 after repeated reflection of the light transmitting portions 132 and the reflective layer 140.
In some embodiments, each light shielding portion 131 is provided with a through hole 131a, and each through hole 131a is provided with a light transmitting portion 132.
In this way, the light emitted by the light emitting element 121 may be directly emitted through the through hole 131a of any one or more light shielding portions 131, or emitted after repeated reflection by the light shielding portions 131 and the reflective layer 140, which is beneficial to further improving the brightness and color gamut of the display panel 100 and further improving the display effect of the display panel 100.
In some embodiments, the material of the light-transmitting portion 132 includes at least one of smoke tin oxide and smoke zinc oxide.
The smoke tin oxide and the smoke zinc oxide have high and good semi-transparent and semi-reflective functions, have good microcavity effect, and are beneficial to further increasing the brightness and color gamut of the display panel 100 and improving the display effect of the display panel 100.
As shown in fig. 1 and 2, in some embodiments, the thickness h of the light-transmitting portion 132, the distance m between the light-transmitting portion 132 and the light-emitting element 121 in the thickness direction, and the minimum dimension n of the light-emitting element 121 in the direction perpendicular to the thickness direction satisfy: the ratio of (h+m)/n is more than or equal to 0.58 and less than 1.73.
Illustratively, (h+m)/n can be 0.58, 0.6, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, or 1.7, etc.
After systematic analysis and long-term practice, the inventor finds that under the condition that the ratio of (h+m)/n is less than or equal to 0.58 and less than 1, the display panel 100 has good peep-proof effect in the range of 45-60 ℃ for the visual angle; and under the condition that (h+m)/n is less than or equal to 1.73, the anti-peeping effect is good for the visual angle of the display panel 100 within the range of 45-30 ℃.
Therefore, the specific numerical value of (h+m)/n is set to be more than or equal to 0.58 and less than 1.73 according to the requirement, so that the peep-proof function under the corresponding visual angle can be met.
In some embodiments, 1 μm.ltoreq.h.ltoreq.3 μm.
Illustratively, h may be 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, or the like.
After analysis of the system and long-term practice, the inventors found that the thickness h of the light transmitting portion 132 is set to satisfy: h is 1 μm or less and 3 μm or less, which is advantageous in reducing the thickness of the display panel 100 as much as possible on the premise of ensuring the transmission function and microcavity effect of the light-transmitting portion 132.
As shown in fig. 1 and 3, in some embodiments, the light shielding portion 131 has a first surface 1311, a second surface 1312, and a side surface 1313, the first surface 1311 being located on a side of the light shielding portion 131 near the light emitting device layer 120, the second surface 1312 being located on a side of the light shielding portion 131 facing away from the light emitting device layer 120, the side surface 1313 connecting the first surface 1311 and the second surface 1312. The side surface 1313 is disposed obliquely outward in a direction away from the substrate 110.
In this way, the side surface 1313 can block more emergent light with a large angle emitted by the light emitting element 121, and has better peeping prevention effect.
As shown in fig. 1 and 2, in some embodiments, at least a portion of the front projection of the light shielding portion 131 on the substrate 110 at least partially overlaps with the front projection of the light emitting element 121 on the substrate 110.
Alternatively, the front projection of the light shielding portion 131 on the substrate 110 may be located within the front projection of the light emitting element 121 on the substrate 110, or the front projection of the light shielding portion 131 on the substrate 110 overlaps with the front projection of the light emitting element 121 on the substrate 110. In this way, the light shielding portion 131 is disposed at a portion of the light emitting element 121 facing away from the substrate 110, which is beneficial to further improving the peep preventing effect of the display panel 100.
As shown in fig. 5, in some embodiments, the light shielding portions 131 are stripe-shaped and extend along a first direction X, and the light shielding portions 131 are disposed at intervals along a second direction Y, where the first direction X, the second direction Y, and the thickness direction intersect with each other.
The light shielding portion 131 is in a strip shape and extends along the first direction X, so that the light shielding portion 131 can block the light emitted by the light emitting element 121 and having a large angle from exiting to the side of the light shielding portion 131 along the second direction Y, and a better peep preventing effect is achieved.
As shown in fig. 6, in some embodiments, the light shielding portions 131 are in a block shape, and the light shielding portions 131 are arranged in an array along a first direction X and a second direction Y, where the first direction X, the second direction Y, and the thickness direction intersect each other.
The light shielding part 131 is in a block shape and is arranged at intervals along the first direction X and the second direction Y, which is beneficial to reducing the blocking effect of the light shielding part 131 on the light emitted by the light emitting element 121 on the premise of playing a peep-proof role, and is beneficial to improving the light emitting brightness of the light emitting element 121, thereby improving the display effect and efficiency of the display panel 100.
As shown in fig. 7, in some embodiments, two rows of light shielding portions 131 adjacent in the second direction Y are offset.
Two adjacent rows of light shielding portions 131 along the second direction Y are arranged in a staggered manner, and at least part of the projection of any one light shielding portion 131 along the second direction Y in any one row is located between two adjacent light shielding portions 131 in the other row.
In this way, the projection of the plurality of light shielding portions 131 along the second direction Y can shield most of the light emitted from the light emitting element 121 along the side portion of the second direction Y at a large angle, which is beneficial to further improving the peep-proof effect of the display panel 100 on the premise of improving the light emitting efficiency of the light emitting element 121.
As shown in fig. 1 and 4, in some embodiments, the peep-proof structure 130 further includes a transmission portion 150, where the transmission portion 150 is disposed between adjacent light shielding portions 131, and the transmission portion 150 is configured to enhance and radiate the brightness of the light emitted by the light emitting element 121.
The transmitting part 150 has an effect of enhancing light, and the transmitting part 150 may include a transmission grating 151 or the like, for example. By arranging the transmission part 150 between two adjacent light shielding parts 131, the brightness of the display panel 100 is further improved, and the display effect is further improved, especially, for the case that the front projection of the light shielding parts 131 on the substrate 110 and the front projection of the light emitting element 121 on the substrate 110 at least partially overlap, the transmission part 150 can compensate the brightness of the display panel 100 lost due to the arrangement of the light shielding parts 131, which is beneficial to improving the peeping prevention capability, and simultaneously further improving the display brightness of the display panel 100, and further improving the display effect.
As shown in fig. 1 and 4, in some embodiments, at least a portion of the orthographic projection of the transmissive portion 150 on the substrate 110 is located within the orthographic projection of the light emitting element 121 on the substrate 110.
In this way, the light emitted from the light emitting element 121 corresponding to the transmission portion 150 can be irradiated more to the corresponding transmission portion 150, so that the brightness of the light emitted from the light emitting element 121 is enhanced to a greater extent, which is further advantageous for improving the light emitting efficiency and brightness of the display panel 100.
With continued reference to fig. 1 and 4, in some embodiments, the transmissive portion 150 includes a transmissive grating 151.
The transmission grating 151 may be engraved with a transmissive material to form a grating structure that transmits light emitted from the light emitting element 121.
According to the gap surface plasma effect, after the light emitted by the light emitting element 121 irradiates the transmission grating 151, a part of the light is directly emitted, and another part of the light repeatedly oscillates on the transmission grating 151 and resonates with the transmission grating 151 to excite stronger light, so that the light emitting efficiency and brightness of the display panel 100 are further improved.
With continued reference to fig. 1 and 4, in some embodiments, the transmission grating 151 includes a grating portion 1511 and a gap portion 1512, the gap portion 1512 being located between two adjacent grating portions 1511, and the material of the grating portions 1511 includes at least one of silver and aluminum. The gap portions 1512 may be formed by filling the relevant material between the grating portions 1511 when adjacent film layers of the transmission grating 151 are prepared after the preparation of the grating portions 1511 is completed.
Silver and aluminum have low ion loss, and in the process of generating resonance between light emitted by the light emitting element 121 and the grating portion 1511, the material loss of the grating portion 1511 is small, which is beneficial to improving the structural stability of the transmission portion 150, and further improving the display stability of the display panel 100.
Alternatively, the grating portions 1511 may be in a stripe shape and arranged at intervals in one direction, or the transmission grating 151 may be provided in a block shape and arranged at intervals in two directions.
As shown in fig. 5, in some embodiments, the transmission grating 151 includes a plurality of grating portions 1511, and the plurality of grating portions 1511 are arrayed along a first direction X and a second direction Y, the first direction X intersecting the second direction Y.
The plurality of grating portions 1511 are arranged in an array along the first direction X and the second direction Y, and the plurality of grating portions 1511 may be arranged in a rectangular array, where the second direction Y may be perpendicular to each other; alternatively, the plurality of grating portions 1511 are arranged in a circular array, where one of the first direction X and the second direction Y is arranged along the circumferential direction of the circle and the other is arranged along the radial direction of the circle.
The plurality of grating portions 1511 are arranged along the first direction X and the second direction Y, which is beneficial to increasing the intensity of the light emitted by the light emitting element 121 after being emitted to the grating portions 1511, and further beneficial to exciting stronger light after being more violently excited and vibrated with the grating portions 1511, so as to further improve the light emitting efficiency and brightness of the display panel 100.
As shown in fig. 6, in some embodiments, the grating portions 1511 extend in a first direction X and are arranged in a second direction Y, the first direction X and the second direction Y intersecting.
In this way, the grating portion 1511 may have a long strip shape and extend along the first direction X, and the plurality of grating portions 1511 are disposed at intervals along the second direction Y. The first direction X and the second direction Y intersect, and the first direction X and the second direction Y are, illustratively, perpendicular.
The grating portion 1511 extends along the first direction X and is arranged along the second direction Y, so that light emitted by the light emitting element 121 is excited to be more intense to illuminate at the grating portion 1511, thereby improving the light emitting efficiency and brightness of the display panel 100.
As shown in fig. 5 and 6, in some embodiments, the dimension e of the grating portion 1511 and the dimension p of the gap portion 1512 in a direction parallel to the substrate 110 satisfy: e/p is more than 0.3 and less than 0.5.
Alternatively, e/p may be 0.35, 0.4, 0.45, or 0.48, etc.
The inventor has found through system analysis and long-term practice that setting 0.3 < e/p < 0.5 has little influence on chromaticity of the display panel 100 on the premise of improving light-emitting efficiency and brightness of the display panel 100, and is beneficial to keeping the display panel 100 to have a good display effect.
In some embodiments, 90 nm.ltoreq.e.ltoreq.110 nm.
Illustratively, e may be 90nm, 95nm, 100nm, 105nm, 110nm, or the like.
After system analysis and long-term practice, the inventor finds that the setting of e is more than or equal to 90nm and less than or equal to 110nm is beneficial to greatly improving the agitation of the grating portion 1511 by the light emitted by the light-emitting element 121, and further improving the light-emitting efficiency and brightness of the display panel 100.
With continued reference to fig. 5 and 6, in some embodiments, in the second direction Y, the dimension p of the gap 1512 satisfies: p is more than or equal to 100nm and less than or equal to 400nm.
The dimension p of the gap portion 1512 is the distance between two adjacent grating portions 1511.
Alternatively, p may be 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, 400nm, or the like.
After system analysis and long-term practice, the inventor finds that setting p to be less than or equal to 100nm and less than or equal to 400nm is beneficial to greatly improving the agitation of the grating portion 1511 by the light emitted by the light-emitting element 121, and further improving the light-emitting efficiency and brightness of the display panel 100.
As shown in fig. 1 and 2, in some embodiments, the display panel 100 further includes a planarization layer 160, where the planarization layer 160 is filled between the light shielding portions 131 and is disposed on a side of the peep-proof structure 130 facing away from the display panel 100.
In this way, after the preparation of the peep-proof structure 130 and the light-transmitting portion 132, the planarization layer 160 may be formed by deposition or other processes to fill the gaps between the light-shielding portions 131. In the embodiment where the display panel 100 further includes the transmissive portion 150, the planarization layer 160 may be prepared after the transmissive portion 150 is prepared, so that the planarization layer 160 fills the gap portions 1512 corresponding to the transmissive portion 150 and between the transmissive portion 150 and the light shielding portion 131.
Through setting up planarization layer 160 to set up planarization layer 160 and pack between shading portion 131, and locate peep-proof structure 130 and deviate from the one side of display panel 100, be favorable to improving peep-proof structure 130 and the structural stability of printing opacity portion 132, and encapsulation layer 170 can block invasion of impurity such as water oxygen, is favorable to reducing outside to the corruption of shading portion 131 and printing opacity portion 132, guarantees the structural stability of shading portion 131 and printing opacity portion 132.
In some embodiments, the light transmittance T of the planarization layer 160 satisfies: t is more than or equal to 60% and less than or equal to 90%.
Alternatively, the light transmittance T of the planarization layer 160 may be 60%, 65%, 70%, 75%, 80%, 85%, or 90%, or the like. Alternatively, the planarization layer 160 may be selected from gray organic glue.
The inventors have found through systematic analysis and long-term practice that the light transmittance T of the planarization layer 160 is set to satisfy: t is more than or equal to 60% and less than or equal to 90%, so that the reflectivity of the display panel 100 is further reduced, and the display effect of the display panel 100 is improved. Due to the light-transmitting portion 132, the display brightness of the display panel 100 may be increased to compensate for the effect of the decrease in the light transmittance of the planarization layer 160 on the brightness of the display panel 100. Therefore, by providing the light transmitting portion 132, and providing the planarizing layer 160, the light transmittance T satisfies: t is more than or equal to 60% and less than or equal to 90%, the reflectivity of the display panel 100 can be reduced, the brightness and the color gamut of the display panel 100 are improved, and the display effect of the display panel 100 is further improved.
With continued reference to fig. 1 and fig. 2, in some embodiments, the display panel 100 further includes an encapsulation layer 170, the encapsulation layer 170 is disposed on the light emitting device layer 120, and the peep preventing structure 130 is disposed on a side of the encapsulation layer 170 facing away from the display device layer.
The encapsulation layer 170 may prevent external water oxygen or the like from entering the inside of the light emitting device layer 120 to corrode the light emitting element 121.
With continued reference to fig. 1 and 2, in some embodiments, the display panel 100 further includes a cover plate 180, and the cover plate 180 is disposed on a side of the planarization layer 160 facing away from the peep-proof structure 130.
As shown in fig. 8, a display device 10 provided according to an embodiment of the present application includes a display panel 100 provided in any of the above embodiments.
The display device 10 in the embodiment of the present application includes, but is not limited to, a mobile phone, a personal digital assistant (Personal Digital Assistant, PDA), a tablet computer, an electronic book, a television, an access control, a smart phone, a console, and other devices with display functions.
The display device 10 provided in the embodiment of the present application has the same technical effects due to the adoption of the display panel 100 provided in any one of the embodiments described above, and will not be described herein again.
While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A display panel, the display panel comprising:
a substrate;
a light emitting device layer provided on one side of the substrate, the light emitting device including a plurality of light emitting elements;
the peep-proof structure is arranged on one side, away from the substrate, of the light-emitting device layer and comprises a light-transmitting part and a plurality of light-shielding parts which are arranged at intervals, at least part of the light-shielding parts are provided with through holes which penetrate through the light-transmitting part in the thickness direction, and the light-transmitting part is arranged on the through holes;
and the reflecting layer is arranged on one side of the peep-proof structure facing the light-emitting device layer.
2. The display panel according to claim 1, wherein each of the light shielding portions is provided with the through hole, and each of the through holes is provided with the light transmitting portion therein;
preferably, the material of the light-transmitting portion includes at least one of smoke tin oxide and smoke zinc oxide;
preferably, the thickness h of the light-transmitting portion, the distance m between the light-transmitting portion and the light-emitting element in the thickness direction, and the minimum dimension n of the light-emitting element in the direction perpendicular to the thickness direction satisfy: (h+m)/n is more than or equal to 0.58 and less than 1.73;
preferably, 1 μm.ltoreq.h.ltoreq.3 μm.
3. The display panel according to claim 1, wherein the light shielding portion has a first surface, a second surface, and a side surface, the first surface being located on a side of the light shielding portion near the light emitting device layer, the second surface being located on a side of the light shielding portion facing away from the light emitting device layer, the side surface connecting the first surface and the second surface; the side surfaces are arranged obliquely outwards in a direction away from the substrate;
preferably, at least part of the orthographic projection of the light shielding part on the substrate is overlapped with the orthographic projection of the light emitting element on the substrate at least partially.
4. The display panel according to claim 1, wherein the light shielding portions are stripe-shaped and extend in a first direction, and a plurality of the light shielding portions are arranged at intervals in a second direction, and the first direction, the second direction, and the thickness direction intersect each other two by two; or,
the light shielding parts are blocky, the light shielding parts are arranged in an array manner along a first direction and a second direction, and the first direction, the second direction and the thickness direction are intersected in pairs;
preferably, two rows of the light shielding portions adjacent to each other in the second direction are arranged in a staggered manner.
5. The display panel according to any one of claims 1 to 4, wherein the peep-proof structure further comprises a transmission portion provided between adjacent light shielding portions, the transmission portion being configured to be capable of enhancing and radiating out the brightness of light emitted from the light emitting element;
preferably, at least part of the orthographic projection of the transmission part on the substrate is positioned within the orthographic projection of the light emitting element on the substrate.
6. The display panel of claim 5, wherein the transmissive portion comprises a transmissive grating;
preferably, the transmission grating includes a grating portion and a gap portion, the gap portion being located between two adjacent grating portions, and a material of the grating portion includes at least one of silver and aluminum.
7. The display panel according to claim 6, wherein the transmission grating includes a plurality of the grating portions arranged in an array along a first direction and the second direction, the first direction intersecting the second direction; or,
the grating portions extend in a first direction and are arranged in a second direction, and the first direction and the second direction intersect.
8. The display panel according to claim 7, wherein in the second direction, a dimension e of the grating portion and a dimension p of the gap portion satisfy: e/p is more than 0.3 and less than 0.5;
preferably, e is 90 nm.ltoreq.e.ltoreq.110 nm;
preferably, 100 nm.ltoreq.p.ltoreq.400 nm.
9. The display panel according to claim 1, further comprising a planarization layer filled between the light shielding portions and disposed on a side of the privacy structure facing away from the display panel;
preferably, the light transmittance T of the planarization layer satisfies: t is more than or equal to 60% and less than or equal to 90%.
10. A display device comprising the display panel according to any one of claims 1 to 9.
CN202311360793.3A 2023-10-19 2023-10-19 Display panel and display device Pending CN117529175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311360793.3A CN117529175A (en) 2023-10-19 2023-10-19 Display panel and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311360793.3A CN117529175A (en) 2023-10-19 2023-10-19 Display panel and display device

Publications (1)

Publication Number Publication Date
CN117529175A true CN117529175A (en) 2024-02-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311360793.3A Pending CN117529175A (en) 2023-10-19 2023-10-19 Display panel and display device

Country Status (1)

Country Link
CN (1) CN117529175A (en)

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