CN116887621B - Display panel and display device - Google Patents
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- CN116887621B CN116887621B CN202311150712.7A CN202311150712A CN116887621B CN 116887621 B CN116887621 B CN 116887621B CN 202311150712 A CN202311150712 A CN 202311150712A CN 116887621 B CN116887621 B CN 116887621B
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000003491 array Methods 0.000 claims description 3
- 244000144985 peep Species 0.000 abstract description 12
- 230000002265 prevention Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 238000005538 encapsulation Methods 0.000 description 7
- 208000008918 voyeurism Diseases 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 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
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- 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
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- 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
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- 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
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- 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
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
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Abstract
The application discloses a display panel and a display device, wherein the display panel comprises a substrate, a driving circuit layer and a pixel definition layer which are sequentially stacked, at least one peep-proof sub-pixel structure is arranged in at least part of pixel areas, the display sub-pixel structure comprises a display light-emitting unit, the peep-proof sub-pixel structure comprises a peep-proof light-emitting unit, and the light-emitting surface of the peep-proof light-emitting unit is inclined towards the adjacent display sub-pixel structure; the display panel further comprises a packaging layer and a plurality of shading layers, wherein the shading layers are arranged between the peep-proof luminous units and the packaging layer and correspond to the peep-proof sub-pixel structures one by one; wherein, the shading layer covers the corresponding peep-proof luminous unit. Through the design, the display panel can realize the switching between peep prevention and sharing display, and meanwhile, the problems of the reduction of the aperture opening ratio and the reduction of the brightness of the display panel can be avoided.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development and progress of society, a common display can not meet the demands of people in different environmental states, for example, when people are working or doing some secret things, the display is usually required to display pictures only at the front view angle, and the pictures are not displayed on the upper side, the lower side, the left side, the right side and the like, so that the purpose of privacy office is achieved.
At present, various technologies for performing peep-proof display, such as attaching a layer of peep-proof film (grating) or adding a condensing lens structure at a light source, etc., can realize the peep-proof effect of the display panel, but the peep-proof technology cannot realize the conversion between sharing and peep-proof, and has a certain limitation. Another display technology capable of switching between peep-proof and sharing display is that although conversion between sharing and peep-proof of an OLED (Organic Light-Emitting Diode) display panel can be realized, a larger interval is formed between a shading layer of a used peep-proof sub-pixel and the peep-proof sub-pixel, which can increase the distance between a normal display pixel and the peep-proof display pixel, thereby reducing the aperture ratio of the whole display panel and reducing the brightness.
Disclosure of Invention
The purpose of this application is to provide a display panel and display device for display panel can also avoid display panel's aperture ratio to descend, luminance reduction's problem when can realizing switching between peeping-proof and sharing display.
The application discloses display panel, display panel is including the substrate, drive circuit layer and the pixel definition layer that stack gradually the setting, the pixel definition layer will display panel's display area is divided into a plurality of array arrangement's pixel area, be equipped with a plurality of display sub-pixel structures of arranging side by side in the pixel area, wherein still be equipped with at least one peeping-proof sub-pixel structure in at least part pixel area, peeping-proof sub-pixel structure with display sub-pixel structure crisscross the setting side by side.
The display sub-pixel structure comprises a display light-emitting unit, and the display light-emitting unit is arranged on the driving circuit layer; the peep-proof sub-pixel structure comprises a peep-proof light-emitting unit, wherein the peep-proof light-emitting unit is arranged on the driving circuit layer, and the light-emitting surface of the peep-proof light-emitting unit is inclined towards the adjacent display sub-pixel structure; the display panel further comprises a packaging layer and a plurality of shading layers, wherein the packaging layer is arranged on one side, far away from the substrate, of the display sub-pixel structure and the peep-proof sub-pixel structure, and the shading layers are arranged between the peep-proof light emitting units and the packaging layer and correspond to the peep-proof sub-pixel structures one by one; the front projection of the shading layer on the driving circuit layer covers the front projection of the peep-proof light-emitting unit on the driving circuit layer.
Optionally, the pixel defining layer includes a plurality of retaining walls and a plurality of supporting tables, the plurality of retaining wall arrays are disposed on the driving circuit layer, and the display sub-pixel structure is correspondingly formed between two adjacent retaining walls; the supporting tables are arranged on the driving circuit layer, are positioned between two adjacent retaining walls and are arranged in one-to-one correspondence with the peep-proof sub-pixel structures; the side of supporting bench is the inclined plane, peep-proof light-emitting unit sets up on the side of supporting bench, the shading layer sets up the supporting bench is kept away from the one end of drive circuit layer.
Optionally, the peep-proof sub-pixel structure is located between two adjacent display sub-pixel structures, two sides of the supporting table are inclined planes, the peep-proof light-emitting unit comprises a first peep-proof light-emitting unit and a second peep-proof light-emitting unit, and the first peep-proof light-emitting unit and the second peep-proof light-emitting unit are located at two sides of the supporting table respectively; and the front projection of the shading layer on the driving circuit layer covers the front projection of the first peep-proof luminous unit and the second peep-proof luminous unit on the driving circuit layer.
Optionally, an included angle between the side surface of the supporting table and the driving circuit layer is 45 °.
Optionally, the side of brace table is equipped with the recess, the axis of recess perpendicular to the side of brace table, the bottom of recess is the arc, peep-proof sub-pixel structure still includes negative pole and positive pole, the positive pole sets up the bottom of recess, peep-proof lighting unit sets up on the positive pole, the negative pole sets up on the peep-proof lighting unit, the positive pole peep-proof lighting unit with the negative pole is the arc.
Optionally, the top of the supporting table is flush with the top of the retaining wall, and the light shielding layer is arranged on the supporting table and is suspended between the light shielding layer and the peep-proof light-emitting unit; and the boundary of the orthographic projection of the shading layer on the driving circuit layer is aligned with the boundary of the orthographic projection of the corresponding peep-proof luminous unit on the driving circuit layer.
Optionally, a reflecting layer is disposed on a side of the light shielding layer facing the peep-proof light emitting unit.
Optionally, the light shielding layer is disposed parallel to the driving circuit layer.
Optionally, the light shielding layer includes a first light shielding section, a second light shielding section and a third light shielding section, the second light shielding section is disposed on the supporting table and is parallel to the driving circuit layer, and two ends of the second light shielding section are respectively connected with the first light shielding section and the third light shielding section; the first light shielding section and the third light shielding section are obliquely arranged towards the packaging layer.
The application also provides a display device comprising a drive circuit and the display panel as described above, the drive circuit driving the display panel.
The beneficial effects of the application are that: by additionally arranging the peep-proof sub-pixel structure in at least part of the pixel structures, the display panel can realize the switching between peep-proof and sharing display, and the light-emitting surface of the peep-proof sub-pixel structure is inclined towards the adjacent display sub-pixel structure, so that when the peep-proof sub-pixel structure is switched to a peep-proof mode, the peep-proof sub-pixel structure emits light, and the peep-proof light-emitting unit of the peep-proof sub-pixel structure and the display light-emitting unit of the adjacent display sub-pixel structure form a mixed light picture from the side, so that normal picture content cannot be seen. When the display mode is switched to the sharing display mode, the peep-proof sub-pixel structure does not emit light, and the shielding layer shields the peep-proof sub-pixel structure below, so that the picture content can be seen from the front side or the side of the display; in addition, because the light shielding layer is positioned below the packaging layer, the distance between the light shielding layer and the peep-proof sub-pixel structure and the peep-proof light emitting unit is relatively short, and the light shielding layer can not block the light emitted from the display sub-pixel structure and the light with a large visual angle. Therefore, under the condition that the display of the display sub-pixel structure is not affected, the light utilization rate of the peep-proof sub-pixel is effectively improved, and the problems of the reduction of the aperture opening rate and the reduction of the brightness of the display panel are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:
fig. 1 is a schematic diagram of a display device according to an embodiment of the present application;
fig. 2 is a schematic diagram of a display panel in a sharing state according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a display panel in a peep-proof state according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another display panel according to an embodiment of the present disclosure;
FIG. 5 is an enlarged partial schematic view at A in FIG. 4;
FIG. 6 is a schematic diagram of another display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of a display panel combined with a reflective layer according to an embodiment of the present application.
10, a display device; 100. a driving circuit; 200. a display panel; 210. a substrate; 220. a driving circuit layer; 230. a pixel definition layer; 231. a retaining wall; 232. a support table; 233. a groove; 240. displaying a sub-pixel structure; 241. a display light emitting unit; 250. a peep-proof sub-pixel structure; 251. a peep-proof light emitting unit; 252. a first peep-proof light emitting unit; 253. a second peep-proof light emitting unit; 260. a cathode; 270. an anode; 280. an encapsulation layer; 290. a light shielding layer; 291. a reflective layer; 292. a first light shielding section; 293. a second light shielding section; 294. and a third light shielding section.
Detailed Description
It should be understood that the terminology, specific structural and functional details disclosed herein are merely representative for purposes of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
Furthermore, unless expressly specified and limited otherwise, "connected" and "coupled" are to be construed broadly, and may be either permanently connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The present application is further described below with reference to the accompanying drawings and alternative embodiments.
Fig. 1 is a schematic diagram of a display device provided in an embodiment of the present application, and as shown in fig. 1, the embodiment of the present application provides a display device 10, where the display device 10 includes a display panel 200 and a driving circuit 100, and the driving circuit 100 is used for driving the display panel 200. It should be noted that, the display panel 200 in the embodiment of the present application is an OLED (Organic Light-Emitting Diode) display panel.
Fig. 2 is a schematic diagram of a display panel provided in an embodiment of the present application in a sharing state, fig. 3 is a schematic diagram of the display panel provided in an embodiment of the present application in a peep-proof state, and in combination with fig. 2 and fig. 3, the embodiment of the present application further provides a display panel 200, where the display panel 200 includes a substrate 210, a driving circuit layer 220, and a pixel definition layer 230 that are stacked in sequence, the driving circuit layer 220 is a circuit structure layer for laying active switches and wirings, and the pixel definition layer 230 is used for dividing each pixel and simultaneously is used for multiplying and discharging evaporated organic luminescent materials. Specifically, the pixel defining layer 230 divides the display area of the display panel 200 into a plurality of pixel areas arranged in an array, and a plurality of display sub-pixel structures 240 arranged in parallel are disposed in the pixel areas, wherein at least a portion of the pixel areas are further provided with at least one peep-proof sub-pixel structure 250, and the peep-proof sub-pixel structure 250 and the display sub-pixel structures 240 are staggered and juxtaposed.
As one embodiment, each pixel region includes three pixel structures, namely a red sub-pixel structure, a green sub-pixel structure and a blue sub-pixel structure; in other embodiments, each of the pixel regions includes four pixel structures, namely a red sub-pixel structure, a green sub-pixel structure, a blue sub-pixel structure, and a white sub-pixel structure; or each pixel area comprises four pixel structures, namely a red sub-pixel structure, a green sub-pixel structure, a blue sub-pixel structure and a yellow sub-pixel structure. In the embodiment of the present application, for convenience of description, only three pixel structures including a red sub-pixel structure, a green sub-pixel structure and a blue sub-pixel structure in each pixel region are taken as examples, but the present invention is not limited to the pixel design.
Wherein the display sub-pixel structure 240 includes a display light emitting unit 241, and the display light emitting unit 241 is disposed on the driving circuit layer 220; the peep-proof sub-pixel structure 250 includes a peep-proof light-emitting unit 251, the peep-proof light-emitting unit 251 is disposed on the driving circuit layer 220, and a light-emitting surface of the peep-proof light-emitting unit 251 is inclined towards the adjacent display sub-pixel structure 240.
The color of the light emitted from the peep-proof light emitting unit 251 is different from the color of the light emitted from the display light emitting unit 241 in the adjacent display sub-pixel structure 240, or the color of the light emitted from the peep-proof light emitting unit 251 is identical to the color of the light emitted from the display light emitting unit 241 in the adjacent display sub-pixel structure 240, but in a different brightness mode, the peep-proof light emitting unit 251 can be controlled to emit no light, or both of the light, but the light intensity of the peep-proof light emitting unit 251 is lower or higher than the light intensity of the display light emitting unit 241 in the display sub-pixel structure 240.
The display panel 200 further includes a packaging layer 280 and a plurality of light shielding layers 290, wherein the packaging layer 280 is a glass cover plate and is disposed on a side of the display sub-pixel structure 240 and the peep-proof sub-pixel structure 250 away from the substrate 210, and the light shielding layers 290 are disposed between the peep-proof light emitting units 251 and the packaging layer 280, are in one-to-one correspondence with the peep-proof sub-pixel structures 250, and are specifically attached to the corresponding peep-proof sub-pixel structures 250; wherein, the front projection of the light shielding layer 290 on the driving circuit layer 220 covers the front projection of the anti-peeping light emitting unit 251 on the driving circuit layer 220.
According to the embodiment of the invention, the peep-proof sub-pixel structure 250 is additionally arranged in the pixel structure, so that the display panel 200 can realize the switching between peep-proof and sharing display, and the light-emitting surface of the peep-proof sub-pixel structure 250 is inclined towards the adjacent display sub-pixel structure 240, so that when the peep-proof mode is switched, the peep-proof sub-pixel structure 250 emits light, and the condition of being seen from the side is that the light-emitting color of the peep-proof sub-pixel structure 250 is different from the light-emitting color of the adjacent display sub-pixel structure 240 or the light-emitting color of the adjacent display sub-pixel structure is different from the side, so that a mixed light picture is formed, and normal picture content cannot be seen. Moreover, compared with the horizontally-arranged peep-proof light-emitting unit 251, the obliquely-arranged peep-proof light-emitting unit 251 occupies a smaller area, and the aperture ratio of the display panel 200 can be improved.
When switching to the sharing display mode, the peep-proof sub-pixel structure 250 does not emit light, and the shielding layer 290 shields the peep-proof sub-pixel structure 250 below, so that the picture content can be seen from the front side or the side of the display; in addition, since the light shielding layer 290 is located below the encapsulation layer 280, the light shielding layer 290 is relatively close to the peep-proof sub-pixel structure 250 and the peep-proof light emitting unit 251, and the light shielding layer 290 does not block the light emitted from the display sub-pixel structure 240 and the light with a large viewing angle. Therefore, in the scheme of the embodiment of the application, under the condition that the display of the display sub-pixel structure 240 is not affected, the light utilization rate of the peep-proof sub-pixel structure 250 is effectively improved, and the problems of reduced aperture opening ratio and reduced brightness of the display panel 200 are avoided.
Due to the existence of the light shielding layer 290, when the display panel 200 is in the peep-proof state, the picture of the positive viewing angle is not affected by the peep-proof pixels, and only the light of the large viewing angle is interfered by the peep-proof sub-pixels. When the panel is in normal display, the peep-proof sub-pixels do not work, and normal display of a large visual angle and a front visual angle cannot be affected, so that the display effect can be guaranteed.
In the embodiment of the present application, a peep-proof sub-pixel structure 250 is disposed between every two adjacent display sub-pixel structures 240, so that light rays with a large viewing angle of each display sub-pixel can be mixed with the peep-proof sub-pixel, and the peep-proof effect is improved; in addition, the display sub-pixel structures 240 in the display panel 200 are arranged in a grid shape, so that good peep-proof effect is ensured on four sides of the display panel 200. Of course, a peep-proof sub-pixel structure 250 may be disposed on the display sub-pixel structures 240 at regular intervals, or even one peep-proof sub-pixel structure 250 may be disposed on the display sub-pixel structures 240 at unequal intervals; in addition, the display sub-pixel structure 240 in the display panel 200 may also be a plurality of stripe structures arranged longitudinally, or a plurality of stripe structures arranged transversely, so as to realize peep prevention on the upper and lower sides, or peep prevention on the left and right sides, which is specifically designed according to the actual situation, and is not limited herein.
In this embodiment, the pixel defining layer 230 includes a plurality of retaining walls 231 and a plurality of supporting platforms 232, the cross section of the retaining walls 231 is isosceles trapezoid, a plurality of retaining wall 231 arrays are disposed on the driving circuit layer 220 to form an accommodating space for the display light emitting unit 241 material deposited by evaporation, at this time, the display sub-pixel structure 240 is correspondingly formed between two adjacent retaining walls 231 of the portion, supporting platforms 232 are distributed between other retaining walls 231, the supporting platforms 232 are disposed on the driving circuit layer 220, and are integrally structured with the retaining walls 231, and are also disposed between two adjacent retaining walls 231 and are disposed in one-to-one correspondence with the peep preventing sub-pixel structure 250.
Further, the side surface of the support base 232 is an inclined surface, the peep-proof light emitting unit 251 is disposed on the side surface of the support base 232, and the light shielding layer 290 is disposed at an end of the support base 232 away from the driving circuit layer 220.
When the display panel 200 adopts the unilateral peep prevention, only one side of the supporting table 232 is an inclined plane, and the peep prevention light emitting unit 251 is arranged on the inclined plane; when the display panel 200 adopts the peep prevention at both sides, the two sides of the supporting table 232 are inclined planes, and the peep prevention light emitting unit 251 is simultaneously arranged on the two inclined planes; when the display panel 200 adopts three-sided peep prevention, at this time, the three sides of the supporting table 232 are all inclined planes, and the peep prevention light emitting unit 251 is simultaneously arranged on the three inclined planes; when the display panel 200 adopts four-sided peep prevention, the four sides of the supporting table 232 are inclined planes, and the peep prevention light emitting unit 251 is disposed on the four inclined planes at the same time. For convenience of presentation, in this embodiment, the two sides of the supporting table 232 are inclined planes, and the peep-proof light-emitting unit 251 is simultaneously disposed on the two inclined planes for illustration, but the embodiment of the present application is not limited to only adopt such a design, and is specifically designed according to practical situations.
Specifically, the peep-proof sub-pixel structure 250 is located between adjacent display sub-pixel structures 240, two sides of the supporting table 232 are inclined planes, the peep-proof light-emitting unit 251 includes a first peep-proof light-emitting unit 252 and a second peep-proof light-emitting unit 253, and the first peep-proof light-emitting unit 252 and the second peep-proof light-emitting unit 253 are located at two sides of the supporting table 232 respectively; the front projection of the light shielding layer 290 on the driving circuit layer 220 covers the front projection of the first peep-proof light emitting unit 252 and the second peep-proof light emitting unit 253 on the driving circuit layer 220.
Wherein, the color of the light emitted from the first peep-proof light emitting unit 252 is different from the color of the light emitted from the display light emitting unit 241 in the adjacent display sub-pixel structure 240, or the color of the light emitted from the first peep-proof light emitting unit 252 is identical to the color of the light emitted from the display light emitting unit 241 in the adjacent display sub-pixel structure 240, but different brightness modes are adopted; the color of the second peep-proof light-emitting unit 253 is different from the color of the display light-emitting unit 241 in the adjacent display sub-pixel structure 240, or the color of the second peep-proof light-emitting unit 253 is identical to the color of the display light-emitting unit 241 in the adjacent display sub-pixel structure 240, but in different brightness modes.
Through the design, the two-side peep-proof effect of the display panel 200, even the effect of single-side peep-proof and two-side peep-proof switching, can be realized, and the peep-proof switching is specifically selected according to actual conditions. In addition, in each pixel structure, the combination of the sub-pixel structures may be not fixed, for example, the adjacent peep-proof sub-pixel structures 250 and the light combination of the display sub-pixel structures 240 are not matched identically, for example, the green display sub-pixel structures 240 and the red peep-proof sub-pixel structures 250 are mixed into yellow light, and some green display sub-pixel structures 240 and the blue peep-proof sub-pixel structures 250 are mixed into purple light, so that the images observed in a large viewing angle are more disordered, and the peep-proof effect is improved.
In addition, the luminous brightness of the peep-proof pixel at different times can also be changed, so that the peep-proof pixel can be seen at a side view angle to display the superposition of a dynamic change picture and a normal display picture, and the peep-proof effect can be further improved.
It will be appreciated that the peep-proof sub-pixel structure 250 and the display sub-pixel structure 240 have, in addition to the light emitting unit, a cathode 260, an anode 270, and the like, which are not shown here.
For the support stand 232, the side of the support stand 232 is at an angle of 45 °, that is, the side of the support stand 232 forms an angle of 45 ° with the driving circuit layer 220.
Because the light emission of the OLED basically accords with lambertian distribution, the light emission efficiency of the angle perpendicular to the light emitting surface is maximum, when the inclination angle of the peep-proof light emitting unit 251 is set, the light emitting unit can be inclined according to the design of the peep-proof angle, and generally when the peep-proof angle is larger than 45 ° for viewing angle, the inclination angle of the peep-proof light emitting unit 251 can be set to 45 °, so that most light rays perpendicular to the light emitting surface can be obliquely emitted, and the light utilization rate is improved.
Further, as shown in fig. 4 and 5, the side surface of the supporting table 232 is provided with a groove 233, and the central axis of the groove 233 is perpendicular to the side surface of the supporting table 232, that is, the opening direction of the groove 233 is consistent with the direction of the side surface. The bottom of the groove 233 is arc-shaped, the peep-proof sub-pixel structure 250 further comprises a cathode 260 and an anode 270, the anode 270 is arranged at the bottom of the groove 233, the peep-proof light-emitting unit 251 is arranged on the anode 270, the cathode 260 is arranged on the peep-proof light-emitting unit 251, and the anode 270, the peep-proof light-emitting unit 251 and the cathode 260 are all filled in the groove 233 and are arc-shaped.
By preparing the peep-proof sub-pixel structure 250 into a concave structure, high-intensity light rays at the vertical positions of the peep-proof light-emitting units 251 can be converged towards a large viewing angle, so that the peep-proof uniformity of the large viewing angle is improved.
As an embodiment of the light shielding layer 290, as shown in fig. 2-4, the light shielding layer 290 adopts a flat plate structure, two ends of the light shielding layer 290 are suspended on the support table 232, and specifically, the light shielding layer 290 is disposed on the support table 232 and suspended between the light shielding layer 290 and the peep-proof light emitting unit 251. By adopting the above design, the peep-proof light-emitting unit 251 has more light-emitting space, and at this time, even if the distance between the light-shielding layer 290 and the peep-proof light-emitting unit 251 is relatively short, more light can be ensured to be emitted, so that an effective light mixing effect is caused for the adjacent display sub-pixel structure 240.
In addition, in the present embodiment, the top of the supporting platform 232 is flush with the top of the retaining wall 231, so that the top of the pixel defining layer 230 is uniform, which is beneficial to the flatness of the cathode 260, and the height of the light shielding layer 290 is not increased while the inclination of the peep-proof light emitting unit 251 is ensured, thereby avoiding the problems of increasing the aperture opening ratio of the display panel 200 and blocking too much light for a large viewing angle.
In addition, the front projection boundary of the light shielding layer 290 on the driving circuit layer 220 is aligned with the front projection boundary of the light shielding layer 290 on the driving circuit layer 220, so that the light shielding layer 290 just blocks the peep-proof sub-pixel in the normal display mode, and meanwhile, excessive blocking of the light emitted by the peep-proof light emitting unit 251 by the light shielding layer 290 in the peep-proof mode is avoided, and the peep-proof effect is affected.
As another embodiment of the light shielding layer 290, as shown in fig. 6, the light shielding layer 290 adopts a plate-like structure similar to V-shape, where the light shielding layer 290 includes a first light shielding section 292, a second light shielding section 293 and a third light shielding section 294, the second light shielding section 293 is disposed on the support table 232 and parallel to the driving circuit layer 220, two ends of the second light shielding section 293 are respectively connected with the first light shielding section 292 and the third light shielding section 294, and the first light shielding section 292 corresponds to the first peep-proof light emitting unit 252 with a flush edge; the second light shielding section 293 corresponds to the second peep-proof light emitting unit 253, and the edges of the second light shielding section 293 are flush; also, the first light shielding section 292 and the third light shielding section 294 are disposed obliquely toward the encapsulation layer 280. In this embodiment, a larger space is provided between the first light shielding section 292 and the first peep-proof light emitting unit 252, a larger space is also provided between the second light shielding section 293 and the second peep-proof light emitting unit 253, the light emitting space of the first peep-proof light emitting unit 252 and the second peep-proof light emitting unit 253 is larger, and the first peep-proof light emitting unit 252 and the second peep-proof light emitting unit 253 can have more light to irradiate into the adjacent display sub-pixel structure 240 so as to ensure better peep-proof effect.
In the above embodiment, the light shielding layer 290 may be made of a material similar to a black matrix, and the two suspended ends of the light shielding layer 290 may be achieved by preparing the encapsulation layer 280 twice, for example, after one encapsulation layer 280 is made, preparing the light shielding layer 290 of the peep-proof pixel, and then preparing the encapsulation layer 280. Encapsulation layer 280 is achieved by two preparations. Or, the space between the support 232 and the adjacent retaining wall 231 is filled with a transparent insulating material, the transparent insulating material covers the peep-proof light-emitting unit 251, the top of the peep-proof sub-pixel structure 250 is flat, and finally the light shielding layer 290 is paved on the transparent insulating material.
Further, as shown in fig. 7, in this embodiment of the present application, the reflection layer 291 is further disposed on one side (the bottom of the light shielding layer 290) of the light shielding layer 290 facing the peep-proof light emitting unit 251, and the light irradiated onto the light shielding layer 290 by the peep-proof light emitting unit 251 is reflected back by the reflection layer 291, so that more light can be irradiated onto the light emitting area of the adjacent display sub-pixel structure 240, thereby improving the light utilization rate of the peep-proof sub-pixel structure 250 and improving the peep-proof effect of the display panel 200.
The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.
Claims (8)
1. The display panel comprises a substrate, a driving circuit layer and a pixel definition layer which are sequentially stacked, wherein the pixel definition layer divides a display area of the display panel into a plurality of pixel areas which are arranged in an array mode;
the display sub-pixel structure comprises a display light-emitting unit, and the display light-emitting unit is arranged on the driving circuit layer; the peep-proof sub-pixel structure comprises a peep-proof light-emitting unit, wherein the peep-proof light-emitting unit is arranged on the driving circuit layer, and the light-emitting surface of the peep-proof light-emitting unit is inclined towards the adjacent display sub-pixel structure;
the display panel further comprises a packaging layer and a plurality of shading layers, wherein the packaging layer is arranged on one side, far away from the substrate, of the display sub-pixel structure and the peep-proof sub-pixel structure, and the shading layers are arranged between the peep-proof light emitting units and the packaging layer and correspond to the peep-proof sub-pixel structures one by one; the front projection of the shading layer on the driving circuit layer covers the front projection of the peep-proof light-emitting unit on the driving circuit layer;
the pixel definition layer comprises a plurality of retaining walls and a plurality of supporting tables, the retaining wall arrays are arranged on the driving circuit layer, and the display sub-pixel structure is correspondingly formed between two adjacent retaining walls; the supporting tables are arranged on the driving circuit layer, are positioned between two adjacent retaining walls and are arranged in one-to-one correspondence with the peep-proof sub-pixel structures;
the side surface of the supporting table is an inclined surface, the peep-proof light-emitting unit is arranged on the side surface of the supporting table, and the shading layer is arranged at one end, far away from the driving circuit layer, of the supporting table;
and one side of the shading layer, which faces the peep-proof light-emitting unit, is provided with a reflecting layer.
2. The display panel of claim 1, wherein the peep-proof sub-pixel structures are located between adjacent display sub-pixel structures, both sides of the supporting table are inclined planes, the peep-proof light-emitting unit comprises a first peep-proof light-emitting unit and a second peep-proof light-emitting unit, and the first peep-proof light-emitting unit and the second peep-proof light-emitting unit are located at both sides of the supporting table respectively;
and the front projection of the shading layer on the driving circuit layer covers the front projection of the first peep-proof luminous unit and the second peep-proof luminous unit on the driving circuit layer.
3. The display panel of claim 2, wherein the side of the support stand forms an angle of 45 ° with the driving circuit layer.
4. The display panel according to claim 1, wherein a groove is formed in a side surface of the supporting table, a central axis of the groove is perpendicular to the side surface of the supporting table, a bottom of the groove is arc-shaped, the peep-proof sub-pixel structure further comprises a cathode and an anode, the anode is arranged at the bottom of the groove, the peep-proof light-emitting unit is arranged on the anode, the cathode is arranged on the peep-proof light-emitting unit, and the anode, the peep-proof light-emitting unit and the cathode are arc-shaped.
5. The display panel according to any one of claims 1 to 4, wherein the top of the supporting table is flush with the top of the retaining wall, and the light shielding layer is disposed on the supporting table and suspended from the peep-proof light-emitting unit; and the boundary of the orthographic projection of the shading layer on the driving circuit layer is aligned with the boundary of the orthographic projection of the corresponding peep-proof luminous unit on the driving circuit layer.
6. The display panel of claim 5, wherein the light shielding layer is disposed in parallel with the driving circuit layer.
7. The display panel according to claim 5, wherein the light shielding layer includes a first light shielding section, a second light shielding section, and a third light shielding section, the second light shielding section is disposed on the support table, is disposed in parallel with the driving circuit layer, and both ends of the second light shielding section are connected to the first light shielding section and the third light shielding section, respectively;
the first light shielding section and the third light shielding section are obliquely arranged towards the packaging layer.
8. A display device comprising a drive circuit and the display panel according to any one of claims 1 to 7, the drive circuit driving the display panel.
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| CN117545302B (en) * | 2023-12-08 | 2024-09-10 | 绵阳惠科光电科技有限公司 | Display panel and display device |
| CN117858579A (en) * | 2023-12-20 | 2024-04-09 | 惠科股份有限公司 | Display panel and display device |
| CN117765853A (en) * | 2023-12-27 | 2024-03-26 | 惠科股份有限公司 | Display panel and display device |
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| CN115172425A (en) * | 2022-07-12 | 2022-10-11 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN115915812A (en) * | 2022-11-18 | 2023-04-04 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN116234376A (en) * | 2022-12-28 | 2023-06-06 | 惠科股份有限公司 | Display panel and display device |
| CN116456754A (en) * | 2023-03-31 | 2023-07-18 | 惠科股份有限公司 | Display panel |
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| CN115172425A (en) * | 2022-07-12 | 2022-10-11 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN115915812A (en) * | 2022-11-18 | 2023-04-04 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN116234376A (en) * | 2022-12-28 | 2023-06-06 | 惠科股份有限公司 | Display panel and display device |
| CN116456754A (en) * | 2023-03-31 | 2023-07-18 | 惠科股份有限公司 | Display panel |
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