CN117202724A - Organic light emitting display panel and display device - Google Patents
Organic light emitting display panel and display device Download PDFInfo
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- CN117202724A CN117202724A CN202311130730.9A CN202311130730A CN117202724A CN 117202724 A CN117202724 A CN 117202724A CN 202311130730 A CN202311130730 A CN 202311130730A CN 117202724 A CN117202724 A CN 117202724A
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 84
- 239000011521 glass Substances 0.000 claims abstract description 45
- 239000004568 cement Substances 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 31
- 238000005538 encapsulation Methods 0.000 claims description 69
- 239000006185 dispersion Substances 0.000 claims description 55
- 230000000694 effects Effects 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 238000000149 argon plasma sintering Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The application discloses an organic light-emitting display panel and display equipment, wherein the organic light-emitting display panel comprises a cover plate, a substrate and a packaging layer, wherein the cover plate and the substrate are oppositely arranged, the packaging layer is positioned between the cover plate and the substrate, and the packaging layer is glass cement; the organic light-emitting display panel further comprises a laser dispersing part, wherein the laser dispersing part is arranged on one side of the cover plate, which faces the packaging layer, and surrounds the display area of the organic light-emitting display panel, and the laser dispersing part is used for dispersing laser light irradiated on the cover plate towards the side of the packaging layer; and the orthographic projection of the laser dispersing part on the substrate is overlapped with the orthographic projection of the packaging layer on the substrate. Through the design, the laser energy accumulated by the center and the edge of the glass cement is similar, so that the laser energy in the packaging area is uniform, the problem of cavities caused by overburning is prevented, and the packaging effect is improved.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to an organic light emitting display panel and a display device.
Background
Nowadays, OLED (Organic Light-Emitting Diode) display products are popular with consumers because of their advantages of high brightness, full viewing angle, fast response speed, low blue Light, etc. The OLED display screen can be divided into a hard screen and a flexible screen, and the OLED hard screen is a better choice for products without folding or waterfall screen requirements; at present, the packaging of the OLED is divided into an Ultraviolet (UV) curing frame glue packaging mode and a laser sintering glass glue (flit) packaging mode, and for the hard screen OLED, the packaging mode of the laser sintering glass glue is mainly adopted.
In an OLED display, the bottom of the glass paste overlaps with the metal data lines on the substrate, which are mainly made of aluminum and protected by inert metals. In the packaging process of using the laser sintering glass cement, due to the pattern reason of laser light and the path reason of laser, the laser energy accumulation received by the central area of the glass cement is larger than that received by the edge area, so that when the laser energy of the edge area meets the sintering requirement of the glass cement, the problem that the laser energy exceeds the requirement value exists in the central area, and the elastic deformation of a metal data wire below the central area is increased; when the limit of the internal compressive stress born by the metal data line is reached, the metal data line releases the compressive stress in an atomic diffusion mode, hillocks are formed on the surface of the metal data line in a protruding mode, and the glass cement above the metal data line is jacked up; when the temperature returns to normal temperature, the metal data wire is retracted, so that a cavity is formed between the metal data wire and the glass cement, and the problem of poor packaging is caused.
Disclosure of Invention
The application aims to provide an organic light-emitting display panel and display equipment, which are used for improving the problem of cavities of glass cement in the laser sintering process and improving the packaging effect.
The application discloses an organic light-emitting display panel, which comprises a cover plate, a substrate and a packaging layer, wherein the cover plate and the substrate are oppositely arranged; the organic light-emitting display panel further comprises a laser dispersing part, wherein the laser dispersing part is arranged on one side of the cover plate, which faces the packaging layer, and surrounds the display area of the organic light-emitting display panel, and the laser dispersing part is used for dispersing laser light irradiated on the cover plate towards the side of the packaging layer; and the orthographic projection of the laser dispersing part on the substrate is overlapped with the orthographic projection of the packaging layer on the substrate.
Optionally, the packaging layer includes an edge region packaging part and a corner region packaging part, the edge region packaging part is located at a side surface of the organic light-emitting display panel, and the corner region packaging part is located at a corner of the organic light-emitting display panel; the edge area packaging parts are distributed in a straight line, and the corner area packaging parts are distributed in a round angle; the laser dispersing part comprises an edge region dispersing part and a corner region dispersing part, the edge region dispersing part corresponds to the edge region packaging part, and the corner region dispersing part corresponds to the corner region packaging part; along the edge extending direction of the organic light emitting display panel, the center line of the edge area dispersing part is overlapped with the center line of the edge area packaging part, the center line of the corner area dispersing part is not overlapped with the center line of the corner area packaging part, and the distance between the center line of the corner area dispersing part and the display area of the organic light emitting display panel is smaller than the distance between the center line of the corner area packaging part and the display area of the organic light emitting display panel.
Optionally, the width of the edge area dispersing part is smaller than or equal to the width of the edge area packaging part, and the orthographic projection of the edge area packaging part on the substrate covers the orthographic projection of the edge area dispersing part on the substrate.
Optionally, the width of the corner region dispersion part is larger than the width of the corner region encapsulation part, and the orthographic projection of the corner region dispersion part on the substrate covers the orthographic projection of the corner region encapsulation part on the substrate.
Optionally, a groove is formed on a side, facing the packaging layer, of the cover plate to form the laser dispersing part, and an inner wall of the groove is a cambered surface and forms a concave mirror structure.
Optionally, a width of the groove corresponding to a side of the organic light emitting display panel is smaller than a width of the groove corresponding to a corner of the organic light emitting display panel.
Optionally, the laser dispersing part is disposed between the cover plate and the encapsulation layer, and the laser dispersing part is a concave lens structure, and a concave surface in the concave lens structure faces the encapsulation layer.
Optionally, the laser dispersing part is arranged between the cover plate and the packaging layer, and the laser dispersing part is of a triple prism structure, a vertex angle in the triple prism structure faces the cover plate, and a bottom surface in the triple prism structure faces the packaging layer.
Optionally, the laser dispersing part is arranged between the cover plate and the packaging layer, and the laser dispersing part is of a porous net structure, and the number of through holes in two side areas of the porous net structure is greater than that in the middle area of the porous net structure.
The application also discloses a display device comprising the organic light emitting display panel and a driving circuit for driving the organic light emitting display panel.
According to the application, the laser dispersing part is additionally arranged in the organic light-emitting display panel, and the laser light for carrying out laser sintering on the glass cement is dispersed from the center of the glass cement to the outer side of the glass cement through the laser dispersing part, so that excessive accumulation of laser energy in the center area of the glass cement is prevented, and a metal data line below the glass cement is prevented from being influenced; and after laser light at the center of the original glass cement is dispersed to the outer side of the glass cement, the laser light energy accumulated at the center and the edge of the glass cement is similar, so that the laser energy in the packaging area is uniform, the problem of cavities caused by overburning is prevented, and the packaging effect is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of 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 evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic diagram of a laser light path provided by the present application;
FIG. 2 is a schematic cross-sectional view of an organic light-emitting display panel according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an encapsulation layer according to a first embodiment of the present application;
fig. 4 is a top view of an organic light emitting display panel according to an embodiment of the present application;
FIG. 5 is a schematic diagram of another package layer according to the first embodiment of the present application;
fig. 6 is a schematic cross-sectional view of an organic light emitting display panel according to another embodiment of the present application;
fig. 7 is a schematic cross-sectional view of an organic light emitting display panel according to another embodiment of the present application;
fig. 8 is a schematic cross-sectional view of an organic light emitting display panel according to another embodiment of the present application;
fig. 9 is a schematic cross-sectional view of an organic light emitting display panel according to another embodiment of the present application.
10. An organic light emitting display panel; 100. a cover plate; 200. a substrate base; 300. an encapsulation layer; 310. an edge region encapsulation part; 320. corner region packaging parts; 400. a laser dispersing section; 410. an edge area dispersing section; 420. corner region dispersion; 430. a groove; 440. a concave lens structure; 450. a triangular prism structure; 460. a porous network structure; 461. and a through hole.
Detailed Description
It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose 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 above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The application is further described below with reference to the drawings and alternative embodiments.
As shown in fig. 1, a schematic diagram of a laser path is shown, where a represents a pattern of laser light irradiated on the organic light emitting display panel 10. In the packaging process of the OLED display screen, in order to prevent laser energy from affecting display area devices, an isolation safety area exists between a packaging area and a display area; moreover, the OLED display screen product in the current stage accords with the ergonomic design, the corners of the display area are mainly round corners, and laser light needs to be subjected to laser sintering by taking the packaging appearance as a path; furthermore, the circular hole shape of the laser emitter results in a circular pattern of the laser light irradiated onto the organic light emitting display panel 10, and the diameter of the circular pattern of the laser light irradiated onto the organic light emitting display panel 10 is larger than the width of the package region in order to improve the laser efficiency.
In the process of moving the round laser light along the path, firstly, the laser light is more concentrated towards the center energy, secondly, the time of the laser light staying in the center of the packaging area is longer than the time of the laser light staying at the edge of the packaging area due to the pattern reason of the laser light, thirdly, the laser energy accumulated in the center of the packaging area is greater than the laser energy accumulated in the edge of the packaging area due to the reason that the energy accumulated on the edge of the packaging area is dispersed due to the fact that the laser light irradiates the edge of the packaging area, and when the laser energy accumulated in the edge of the packaging area meets the sintering requirement of glass cement, the problem that the laser energy exceeds the requirement value exists in the center of the packaging area is caused, and then the problem of cavities between the glass cement and the metal data wires below and the problem of bubbles caused by the oversintering of the glass cement are caused.
Based on the above, the embodiment of the application disperses the laser energy accumulated in the center of the packaging area by changing the direction of light path refraction in the laser process, and fills the edge area of the packaging area, so that the laser energy accumulated in each area of the glass cement is similar.
Fig. 2 is a schematic cross-sectional view of an organic light-emitting display panel, and as shown in fig. 2, an embodiment of the application discloses an organic light-emitting display panel 10, wherein the organic light-emitting display panel 10 includes a cover plate 100 and a substrate 200 disposed opposite to each other, and an encapsulation layer 300 disposed between the cover plate 100 and the substrate 200, and the encapsulation layer 300 is glass cement; the organic light emitting display panel 10 further includes a laser dispersing portion 400, where the laser dispersing portion 400 is disposed on a side of the cover plate 100 facing the encapsulation layer 300, and surrounds the display area of the organic light emitting display panel 10, that is, the laser dispersing portion 400 is a continuous ring structure like glass cement; the laser dispersing unit 400 is configured to disperse the laser light irradiated onto the cover plate 100 toward the side of the encapsulation layer 300, and the front projection of the laser dispersing unit 400 on the substrate 200 overlaps with the front projection of the encapsulation layer 300 on the substrate 200.
According to the embodiment of the application, the laser dispersing part 400 is additionally arranged in the organic light-emitting display panel 10, and the laser dispersing part 400 is used for dispersing laser light for carrying out laser sintering on the glass cement from the center of the glass cement to the outer side of the glass cement, so that excessive accumulation of laser energy in the center area of the glass cement is prevented, and a metal data line below the glass cement is prevented from being influenced; and after laser light at the center of the original glass cement is dispersed to the outer side of the glass cement, the laser light energy accumulated at the center and the edge of the glass cement is similar, so that the laser energy in the packaging area is uniform, the problem of cavities caused by overburning is prevented, and the packaging effect is improved.
In the embodiment of the present application, the laser dispersing part 400 is a groove 430 structure in the cover plate 100, that is, a groove 430 is disposed on a side of the cover plate 100 facing the package layer 300 to form the laser dispersing part 400, and an inner wall of the groove 430 is a cambered surface and forms a concave mirror structure. Specifically, the bottom of the cover plate 100 may be shaped into a concave lens by polishing, etching, or the like, and when laser light is irradiated to the laser dispersing part 400 from the outside, the concave lens has a light scattering effect, so that the laser light can be dispersed to the outside of the glass cement, and the laser light remaining in the center of the glass cement is reduced.
In addition, the bottom of the cover plate 100 is hollowed into the groove 430 to form the laser dispersion part 400, so that when glass cement is manufactured by using a printing technology, the glass cement can be filled into the groove 430, thereby increasing the contact area between the glass cement and the cover plate 100 and improving the connection strength. Moreover, because the groove 430 is in the shape of a circular arc lens, the glass cement can be fully contacted with the inner wall of the groove 430, and the problems of bubbles and cavities between the glass cement and the groove 430 caused by dead angles can be avoided, so that the entry of water vapor can be avoided, and the problem of poor packaging can be avoided.
As shown in fig. 3 and 5, the encapsulation layer 300 is divided into four edge area encapsulation parts 310 and four corner area encapsulation parts 320, the edge area encapsulation parts 310 and the corner area encapsulation parts 320 are staggered, the edge area encapsulation parts 310 are positioned at the side surfaces of the organic light emitting display panel 10, and the corner area encapsulation parts 320 are positioned at the corners of the organic light emitting display panel 10; and the edge area packaging parts 310 are distributed in a straight line, and the corner area packaging parts 320 are distributed in a round angle. It can be understood that the edge region encapsulation part 310 is a portion of the encapsulation layer 300 located at four sides of front, rear, left, and right, the corner region encapsulation part 320 is a portion of the encapsulation layer 300 located at four corners, and widths of the edge region encapsulation part 310 and the corner region encapsulation part 320 remain the same throughout.
Correspondingly, the laser dispersing part 400 includes an edge area dispersing part 410 and a corner area dispersing part 420, the edge area dispersing part 410 corresponds to the edge area packaging part 310 one by one, and the corner area dispersing part 420 corresponds to the corner area packaging part 320 one by one. It can be appreciated that the edge region dispersion part 410 is a part of the laser dispersion part 400 located on the front, rear, left, and right sides, and the corner region dispersion part 420 is a part of the laser dispersion part 400 located at four corners.
As one embodiment, as shown in fig. 3 and 4, the edge area dispersion part 410 and the corner area dispersion part 420 have the same cross-sectional shape and the same width, the edge area dispersion part 410 and the corner area dispersion part 420 have the same groove 430 structure, and the center line b of the edge area dispersion part 410 and the center line b of the corner area dispersion part 420 have the same track as the center line b of the encapsulation layer 300. It can be understood that the center line of the edge area dispersion part 410 and the center line of the corner area dispersion part 420 refer to the dividing line of the bottom position of the groove 430, the direction is consistent with the edge track of the display panel, the center line of the edge area dispersion part 410 is a straight line, and the center line of the corner area dispersion part 420 is a circular arc line.
In this embodiment, along the moving track of the laser light, or along the extending direction of the edge of the organic light emitting display panel 10, the center line of the edge area dispersing part 410 overlaps with the center line of the edge area packaging part 310, and the center line of the corner area dispersing part 420 overlaps with the center line of the corner area packaging part 320. At this time, the package layer 300 and the laser dispersion portion 400 have the same on-center line structure, and the stability after the connection of the two is good.
In this embodiment, the width of the laser dispersing portion 400 does not exceed the width of the encapsulation layer 300, and may specifically be smaller than or equal to the width of the encapsulation layer 300, so as to avoid the laser light dispersing into the display area due to the overlarge width of the laser dispersing portion 400, which affects the devices in the display area.
As another embodiment thereof, as shown in fig. 5 and 6, the width of the corner region dispersion part 420 in the present embodiment is larger than that of the previous embodiment, and the inner side of the corner region encapsulation part 320 is located directly under the center region of the corner region dispersion part 420, and the outer side of the corner region encapsulation part 320 is located directly under the outer side of the corner region dispersion part 420. It will be appreciated that the inner side in the present application refers to the side closer to the display area and the outer side refers to the side farther from the display area.
Specifically, along the extending direction of the edge of the organic light emitting display panel 10, the center line of the edge region dispersion part 410 overlaps with the center line of the edge region encapsulation part 310, the center line of the corner region dispersion part 420 does not overlap with the center line of the corner region encapsulation part 320, and the distance between the center line of the corner region dispersion part 420 and the display region of the organic light emitting display panel 10 is smaller than the distance between the center line of the corner region encapsulation part 320 and the display region of the organic light emitting display panel 10.
In the process of performing laser around the edge of the organic light emitting display panel 10, since the corners of the organic light emitting display panel 10 and the corners of the encapsulation layer 300 are rounded, the laser light also follows a rounded path in the corner region encapsulation portion 320, and the spot of the laser light is rounded, which may cause the laser light to stay inside the corner region encapsulation portion 320 longer than outside, resulting in the laser light accumulating inside the corner region encapsulation portion 320 more energy than outside, so that when the laser energy accumulating outside the corner region encapsulation portion 320 satisfies the sintering requirement, the laser energy accumulating inside the corner region encapsulation portion 320 may exceed the required value, resulting in the occurrence of voids and bubbles inside the corner region encapsulation portion 320.
Based on this, the present embodiment, by increasing the size of the corner region dispersion part 420 such that the width of the corner region dispersion part 420 is larger than the width of the edge region dispersion part 410 on the basis of not changing the encapsulation layer 300, makes the orthographic projection of the corner region dispersion part 420 completely cover the corner region encapsulation part 320, and makes the inner side of the corner region encapsulation part 320 directly under the central region of the corner region dispersion part 420, and makes the outer side of the corner region encapsulation part 320 directly under the outer side region of the corner region dispersion part 420. Because the laser dispersing part 400 is the concave lens structure 440, the curvature of the concave lens structure 440 in the middle area is larger than that of the outer area, the laser light is dispersed to a higher degree after passing through the central area of the corner area dispersing part 420, and the laser light is dispersed to a smaller degree after passing through the outer area of the corner area dispersing part 420, so that the energy accumulated everywhere is uniform when the corner area packaging part 320 is irradiated by laser light, and the problem of cavities and bubbles in the corner area packaging part 320 is avoided.
In this embodiment, the width of the edge area dispersing part 410 is less than or equal to the width of the edge area packaging part 310, and the orthographic projection of the edge area packaging part 310 on the substrate 200 covers the orthographic projection of the edge area dispersing part 410 on the substrate 200. The edge area dispersing part 410 can uniformly disperse the laser light originally irradiated to the center of the edge area packaging part 310 to both sides of the edge area packaging part 310, so that the energy of the laser light accumulated in the edge area packaging part 310 is similar.
Moreover, since the laser dispersion part 400 in the embodiment of the application is in the shape of the groove 430, the width of the groove 430 corresponding to the side of the organic light emitting display panel 10 is smaller than the width of the groove 430 corresponding to the corner of the organic light emitting display panel 10, i.e. the width of the groove 430 at the edge is smaller than the width of the groove 430 at the corner.
In this embodiment, the width of the corner region dispersion part 420 is greater than the width of the corner region encapsulation part 320, and the orthographic projection of the corner region dispersion part 420 on the substrate 200 covers the orthographic projection of the corner region encapsulation part 320 on the substrate 200. Through the above design, the laser light in each area of the corner area packaging part 320 is subjected to the dispersion effect of the corner area dispersing part 420, if the width of the corner area dispersing part 420 is not increased, the corner area dispersing part 420 is only shifted towards the inner side, so that the inner side of the corner area packaging part 320 is positioned in the central area of the corner area dispersing part 420, the outer side of the corner area packaging part 320 is not covered by the corner area dispersing part 420, the laser light irradiated to the inner side area of the corner area packaging part 320 is subjected to more dispersion, the laser light irradiated to the outer side area of the corner area packaging part 320 is not subjected to the dispersion effect of the corner area dispersing part 420, and the laser light transmitted from the inner side is also received, so that more laser energy is accumulated on the outer side of the corner area packaging part 320, and the problem of laser non-uniformity is easy to generate.
Of course, the shape of the recess 430 may be adjusted to make the laser light accumulated in the inner region of the corner region package 320 be similar to the laser light accumulated in the outer region.
As shown in fig. 7, in another embodiment of the present application, the laser dispersion part 400 is also a concave lens structure 440, but the laser dispersion part 400 is not formed by grooving the cover plate 100, but is additionally arranged between the cover plate 100 and the encapsulation layer 300, specifically, the laser dispersion part may be formed by depositing a silicon oxide material on the cover plate 100.
In the embodiment of the present application, the laser dispersing part 400 is a concave lens structure 440, and the concave surface of the concave lens structure 440 faces the encapsulation layer 300. By adopting the design of the embodiment of the application, the problem of cavity and bubble in the center of the glass cement is solved, and meanwhile, the glass cement is contacted with the two sides of the laser dispersing part 400 and the cover plate 100, so that the connection strength of the glass cement and the cover plate 100 can be further improved.
As shown in fig. 8, as another embodiment of the present application, a laser dispersing part 400 is disposed between the cover plate 100 and the encapsulation layer 300, the laser dispersing part 400 is a triangular prism structure 450, the apex angle in the triangular prism structure 450 faces the cover plate 100, and the bottom surface in the triangular prism structure 450 faces the encapsulation layer 300.
In the embodiment of the application, the light is dispersed by utilizing the refraction of the triple prism, and the triple prism is of a three-dimensional structure, and laser light is refracted twice by the triple prism after passing through the cover plate 100, so that the dispersion effect is better.
As shown in fig. 9, as another embodiment of the present application, the laser dispersing part 400 in the embodiment of the present application is disposed between the cover plate 100 and the encapsulation layer 300, and the laser dispersing part 400 is a porous mesh structure 460, and the number of through holes 461 in two side regions of the porous mesh structure 460 is greater than the number of through holes 461 in the middle region of the porous mesh structure 460; or the distribution of the through holes 461 is not changed, but the pore diameters of the through holes 461 in the outer regions of the porous mesh structure 460 are increased so that the pore diameters of the through holes 461 in the both side regions of the porous mesh structure 460 are larger than the pore diameters of the through holes 461 in the central region of the porous mesh structure 460.
In the embodiment of the present application, the through holes 461 in the porous mesh structure 460 are used to adjust the transmission of laser light, so that the laser energy accumulated in the central area and the two side areas of the encapsulation layer 300 is similar; in addition, the number and distribution of the through holes 461 in the porous net-shaped structure 460 are easy to adjust and design, so that the effect of accurately adjusting and controlling the laser energy can be achieved, the laser energy accumulated in the central area and the two side areas of the packaging layer 300 is more similar, and the laser uniformity is further improved.
It will be appreciated that based on the problem that laser energy accumulated on the inner side of the corner is greater than laser energy accumulated on the outer side, the skilled person can perform corresponding adaptive design on the design principle of the above embodiments, for example, approaching the triangular prism at the corner towards the inner side, reducing the number of through holes 461 in the porous mesh structure 460 at the inner side of the corner, etc.
And the above embodiments may also be combined with each other, and different laser dispersion 400 designs may be used at the corners and edges, for example, the edge area dispersion 410 is a concave lens design, and the corner area dispersion 420 is a porous mesh structure 460; alternatively, more than two laser dispersing parts 400 are simultaneously used in the edge area and the corner area, for example, in the edge area, grooves are first dug on the cover plate 100, and then triangular prisms are placed in the grooves 430, so that the dispersing effect on laser light is stronger.
In addition, the design of the laser dispersing unit 400 in the present application is not limited to the specific design in the above embodiment, and the design of dispersing the laser light and making the laser energy applied to the glass cement all the places uniform is all the protection scope of the present application.
In addition, the present application also discloses a display device including the organic light emitting display panel 10 in the above embodiment, and a driving circuit for driving the organic light emitting display panel 10.
The above description of the application in connection with specific alternative embodiments is further detailed and it is not intended that the application be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.
Claims (10)
1. An organic light-emitting display panel comprises a cover plate and a substrate which are oppositely arranged, and an encapsulation layer positioned between the cover plate and the substrate, wherein the encapsulation layer is glass cement,
the organic light-emitting display panel further comprises a laser dispersing part, wherein the laser dispersing part is arranged on one side of the cover plate, which faces the packaging layer, and surrounds the display area of the organic light-emitting display panel, and the laser dispersing part is used for dispersing laser light irradiated on the cover plate towards the side of the packaging layer;
and the orthographic projection of the laser dispersing part on the substrate is overlapped with the orthographic projection of the packaging layer on the substrate.
2. The organic light-emitting display panel according to claim 1, wherein the encapsulation layer includes an edge region encapsulation portion and a corner region encapsulation portion, the edge region encapsulation portion being located at a side of the organic light-emitting display panel, the corner region encapsulation portion being located at a corner of the organic light-emitting display panel; the edge area packaging parts are distributed in a straight line, and the corner area packaging parts are distributed in a round angle;
the laser dispersing part comprises an edge region dispersing part and a corner region dispersing part, the edge region dispersing part corresponds to the edge region packaging part, and the corner region dispersing part corresponds to the corner region packaging part;
along the edge extending direction of the organic light emitting display panel, the center line of the edge area dispersing part is overlapped with the center line of the edge area packaging part, the center line of the corner area dispersing part is not overlapped with the center line of the corner area packaging part, and the distance between the center line of the corner area dispersing part and the display area of the organic light emitting display panel is smaller than the distance between the center line of the corner area packaging part and the display area of the organic light emitting display panel.
3. The organic light-emitting display panel according to claim 2, wherein a width of the edge region dispersion portion is smaller than or equal to a width of the edge region encapsulation portion, and an orthographic projection of the edge region encapsulation portion on the substrate covers an orthographic projection of the edge region dispersion portion on the substrate.
4. The organic light-emitting display panel of claim 2, wherein the width of the corner region dispersion is greater than the width of the corner region encapsulation, and wherein the orthographic projection of the corner region dispersion onto the substrate covers the orthographic projection of the corner region encapsulation onto the substrate.
5. The organic light-emitting display panel according to any one of claims 1 to 4, wherein a groove is formed in a side of the cover plate facing the encapsulation layer to form the laser dispersion portion, and an inner wall of the groove is a cambered surface and forms a concave mirror structure.
6. The organic light-emitting display panel according to claim 5, wherein a width of the groove corresponding to a side of the organic light-emitting display panel is smaller than a width of the groove corresponding to a corner of the organic light-emitting display panel.
7. The organic light-emitting display panel according to any one of claims 1 to 4, wherein the laser dispersion portion is disposed between the cover plate and the encapsulation layer, and the laser dispersion portion is a concave lens structure, and a concave surface in the concave lens structure faces the encapsulation layer.
8. The organic light-emitting display panel according to any one of claims 1 to 4, wherein the laser dispersion part is disposed between the cover plate and the encapsulation layer, and the laser dispersion part is a triple prism structure, wherein a vertex angle in the triple prism structure faces the cover plate, and a bottom surface in the triple prism structure faces the encapsulation layer.
9. The organic light-emitting display panel according to any one of claims 1 to 4, wherein the laser dispersion part is disposed between the cover plate and the encapsulation layer, the laser dispersion part is of a porous mesh structure, and the number of through holes in regions on both sides of the porous mesh structure is greater than the number of through holes in a middle region of the porous mesh structure.
10. A display device comprising the organic light-emitting display panel according to any one of claims 1 to 9, and a driving circuit for driving the organic light-emitting display panel.
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| CN202311130730.9A CN117202724A (en) | 2023-08-31 | 2023-08-31 | Organic light emitting display panel and display device |
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