CN114284332A - Display panel and display device - Google Patents
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- CN114284332A CN114284332A CN202111650236.6A CN202111650236A CN114284332A CN 114284332 A CN114284332 A CN 114284332A CN 202111650236 A CN202111650236 A CN 202111650236A CN 114284332 A CN114284332 A CN 114284332A
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- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a display panel and a display device, the display panel includes: the light-emitting layer comprises a light-emitting element and an auxiliary light-emitting element, the light-emitting element and the auxiliary light-emitting element are adjacent to each other at the edge of the display area, and the auxiliary light-emitting element is in a bright state and is mixed with the light-emitting element at the edge of the display area, so that the brightness of the edge of the display area is improved, and the brightness uniformity of the center of the display area and the edge of the display area is optimized.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the rapid development of science and technology, mobile phones or wearable devices and the like become indispensable tools in daily life and work, people pay more and more attention to the use feeling of mobile phones or wearable devices, especially the display effect of display screens of the mobile phones or the wearable devices, the micro light-emitting diodes and the mini light-emitting diodes have the characteristics of small size, high integration level, self-luminescence and the like, and the display technology of the micro light-emitting diodes or the mini light-emitting diodes through array arrangement becomes a mainstream display technology. In the prior art, when a display area of a display screen is in a bright state, a non-display area is in a dark state, so that the edge position of the display area is darker, and the display effect is affected.
Therefore, it is an urgent need to provide a display panel and a display device that improve the dark edge position when the display area emits light.
Disclosure of Invention
In view of the foregoing, the present invention provides a display panel and a display device.
In one aspect, the present invention provides a display panel including a display area and a non-display area at least partially surrounding the display area, the display panel further including:
a substrate base plate;
and the luminous layer is positioned on one side of the substrate and comprises a plurality of luminous elements positioned in the display area and a plurality of auxiliary luminous elements positioned in the non-display area, and the auxiliary luminous elements and the luminous elements adjacent to the auxiliary luminous elements mix light.
In another aspect of the present invention, a display device includes the display panel described above.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
in the display panel and the display device provided by the invention, the light emitting layer comprises a plurality of light emitting elements positioned in the display area and a plurality of auxiliary light emitting elements positioned in the non-display area, part of the light emitting elements are positioned at the edge of the display area, the distance between the light emitting elements positioned at the edge of the display area and the non-display area is the shortest, namely the light emitting elements positioned at the edge of the display area are adjacent to the auxiliary light emitting elements, and the auxiliary light emitting elements are mixed with the light emitting elements positioned at the edge of the display area when in a bright state, so that the brightness of the edge of the display area is improved, and the brightness uniformity of the center of the display area and the edge of the display area is optimized.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a display panel in the prior art;
FIG. 2 is a schematic plan view of a display panel according to the present invention;
FIG. 3 is a cross-sectional view taken along line M-M' of FIG. 2;
FIG. 4 is another cross-sectional view taken along line M-M' of FIG. 2;
FIG. 5 is another cross-sectional view taken along line M-M' of FIG. 2;
FIG. 6 is a further cross-sectional view taken along line M-M' of FIG. 2;
FIG. 7 is a further cross-sectional view taken along line M-M' of FIG. 2;
FIG. 8 is a further cross-sectional view taken along line M-M' of FIG. 2;
FIG. 9 is a schematic plan view of another display panel provided in the present invention;
FIG. 10 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 11 is a cross-sectional view taken along line N-N' of FIG. 10;
FIG. 12 is another sectional view taken along line N-N' of FIG. 10;
fig. 13 is a schematic plan view of a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In order to solve the problem of low edge brightness of the display area, the inventors have conducted the following studies on the display panel in the related art:
fig. 1 is a schematic plan view of a display panel 000 in the prior art, where the display panel 000 includes a display area AA 'and a non-display area BB' at least partially surrounding the display area AA ', and a light emitting device 00 is located in the display area AA'. Only the array arrangement of the light emitting elements 00 is illustrated in fig. 1, the light emitting elements 00 include a light emitting element 01, a light emitting element 02, and a light emitting element 03 arranged in this order in the row direction X, the light emitting element 01 is located at the edge of the display area AA ', is closest to the non-display area BB', when the display panel 000 is in a bright state, the light-emitting element 02 can mix light with the light-emitting element 01 and also mix light with the light-emitting element 03, when the light emitting element 01 at the edge of the display area AA' can mix light with only the light emitting element 02, thereby causing a problem that the brightness of the display area AA ' at the edge position near the non-display area BB ' is lower than the brightness at the middle position of the display area AA ', it is understood that the above-mentioned contents are analyzed using a single light emitting element in order to clearly explain the problems found by the inventors during the research, but in the actual product, a plurality of columns of light emitting elements having low edge luminance are possible.
In view of the above, the present invention provides a display panel and a display device, and the following detailed description is provided for specific embodiments of the display panel and the display device provided by the present invention.
Referring to fig. 2 and 3, fig. 2 is a schematic plan view of a display panel 100 according to the present invention, and fig. 3 is a cross-sectional view taken along direction M-M' of fig. 2.
In this embodiment, the display panel 100 includes a display area AA and a non-display area BB at least partially surrounding the display area AA, and the display panel 100 further includes: a base substrate 1; the light-emitting layer 2 is located on one side of the substrate 1, and includes a plurality of light-emitting elements 3 located in the display area AA and a plurality of auxiliary light-emitting elements 4 located in the non-display area BB, and the auxiliary light-emitting elements 4 mix light with the adjacent light-emitting elements 3.
It should be noted that fig. 2 only illustrates that the orthographic projection of the display area AA on the substrate base plate 1 is rectangular, but of course, the orthographic projection of the display area AA on the substrate base plate 1 may also be circular, irregular, or the like. In fig. 2, the non-display area BB is disposed around the display area AA, fig. 2 only shows a case where the non-display area BB completely surrounds the display area AA, and the non-display area BB may partially surround the display area AA, which is not particularly limited herein. The non-display area BB includes a first non-display area BB1 and a second non-display area BB2, optionally, the plurality of auxiliary light emitting elements 4 may also be partially located in the first non-display area BB1 and partially located in the second non-display area BB2, or the plurality of auxiliary light emitting elements 4 are sequentially disposed in the non-display area BB surrounding the display area AA, which is not limited thereto, the number and arrangement of the auxiliary light emitting elements 4 in fig. 2 are also only schematic, and may be adjusted according to actual requirements, which is not specifically limited in this application, and the light emitting elements 3 and the auxiliary light emitting elements 4 are preferably micro light emitting diodes or mini light emitting diodes.
It can be understood that the light emitting colors of the auxiliary light emitting elements 4 may be different colors, and the auxiliary light emitting elements 4 provide brightness for the edge area of the display area AA in the display state, and mix light with the light emitting elements 3 closest to the non-display area BB, so as to improve the brightness of the edge of the display area AA and improve the problem that the brightness of the edge of the display area AA is lower than the brightness of the center of the display area AA, i.e. solve the problem that the edge of the display area AA is darker.
Compared with the prior art, the display panel 100 provided in this embodiment includes the light-emitting layer 2 including a plurality of light-emitting elements 3 located in the display area AA and a plurality of auxiliary light-emitting elements 4 located in the non-display area BB, and the auxiliary light-emitting elements 4 can mix light with the adjacent light-emitting elements 3. Part of the light emitting elements 3 are located at the edge of the display area AA, the light emitting elements 3 located at the edge of the display area AA are closest to the non-display area BB, that is, the light emitting elements 3 located at the edge of the display area AA are adjacent to the auxiliary light emitting elements 4, and the auxiliary light emitting elements 4 are in a bright state and mix with the light emitting elements 3 located at the edge of the display area AA, so that the brightness of the edge of the display area AA is improved, the brightness uniformity of the center of the display area AA and the edge of the display area AA is improved, and the display performance is improved.
In some alternative embodiments, referring to fig. 2 and fig. 4, fig. 4 is another cross-sectional view taken along the direction M-M' in fig. 2, along a direction perpendicular to the plane of the substrate base plate 1, a distance between one end of the light-emitting surface 5 of the auxiliary light-emitting element 4 away from the display area AA and the substrate base plate 1 is a, and a distance between one end of the light-emitting surface 5 of the auxiliary light-emitting element 4 close to the display area AA and the substrate base plate 1 is B, where a > B.
It should be noted that fig. 4 only illustrates a case that the light-emitting surface 5 of the auxiliary light-emitting element 4 is disposed in an inclined manner compared to the plane of the substrate 1, optionally, the height of the pins of the auxiliary light-emitting element 4 may be set to be different so that the light-emitting surface 5 of the auxiliary light-emitting element 4 is inclined, or another structure is provided to raise one end of the auxiliary light-emitting element 4 so that the light-emitting surface 5 of the auxiliary light-emitting element 4 is inclined, but is not limited thereto. Fig. 4 also shows the driving transistor, the buffer layer 11, the planarization layer 12 and the interlayer insulating layer, the substrate 1, the buffer layer 11 and the interlayer insulating layer are not filled with patterns, and the light L1 of the light emitting surface 5 of the auxiliary light emitting element 4 is inclined toward the display area AA.
It can be understood that, because the distance between the end of the light-emitting surface 5 of the auxiliary light-emitting element 4 close to the display area AA and the substrate 1 is different from the distance between the end of the light-emitting surface 5 of the auxiliary light-emitting element 4 far from the display area AA and the substrate 1, that is, the light-emitting surface 5 of the auxiliary light-emitting element 4 is inclined with respect to the substrate 1, and the inclined light-emitting surface 5 of the auxiliary light-emitting element 4 faces the display area AA, the amount of light incident into the display area AA along the direction from the light-emitting surface 5 of the auxiliary light-emitting element 4 to the display area AA is greatly increased, so as to mix light with the light-emitting elements 3 at the edge of the display area AA, so that the light mixing efficiency is increased, the edge brightness of the display area AA can be further increased, and the problem that the brightness at the edge of the display area AA close to the non-display area BB is lower than the brightness at the middle position of the display area AA is solved.
In some alternative embodiments, in combination with fig. 2 and 5, fig. 5 is another cross-sectional view taken along line M-M' in fig. 2, and the display panel 100 provided in this embodiment further includes a raised portion 6; the raised part 6 is at least partially overlapped with the auxiliary light-emitting element 4 along the direction vertical to the plane of the substrate base plate 1; in the direction perpendicular to the plane of the substrate base plate 1, the thickness of the end of the raised portion 6 close to the display area AA is smaller than the thickness of the end of the raised portion 6 far from the display area AA.
It should be noted that fig. 5 only illustrates that the raised portion 6 is located between the substrate base plate 1 and the array layer 10, and a cross section of the raised portion 6 along a direction perpendicular to a plane of the substrate base plate 1 is a triangle, optionally, the raised portion 6 may be located between the array layer 10 and the light emitting layer 2, or between any two adjacent interlayer insulating layers in the array layer 10, and the like.
It can be understood that, the raised portion 6 is disposed in the non-display area BB, the side of the raised portion 6 away from the substrate base plate 1 is inclined toward the display area AA, the thickness of the portion of the array layer 10 located on the side of the raised portion 6 away from the substrate base plate 1 is equal to the thickness of the portion of the array layer 10 located in the display area AA, such that the side of the array layer 10 located on the raised portion 6 away from the substrate base plate 1 is an inclined plane, and the inclined angle of the inclined plane is the same as the inclined angle of the raised portion 6 away from the substrate base plate 1, and similarly, since the light-emitting layer 2 and the array layer 10 are disposed on the raised layer 6, the side of the light-emitting layer 2 or other film layers located on the raised portion 6 away from the substrate base plate 1 is also an inclined plane, the light-emitting surface 5 of the auxiliary light-emitting element 4 is also an inclined plane, the light of the light-emitting surface 5 of the auxiliary light-emitting element 4 faces the display area AA, the light mixing efficiency is improved, and the edge brightness of the display area AA can be further improved, the problem that the brightness of the display area AA near the edge of the non-display area BB is lower than that of the middle of the display area AA is solved.
In some alternative embodiments, referring to fig. 2 and 6, fig. 6 is a cross-sectional view taken along line M-M' of fig. 2, and the display panel 100 provided in this embodiment further includes a functional layer 7; the functional layer 7 comprises a first area 8 and a second area 9 at least partially surrounding the first area 8, the first area 8 at least partially overlapping the display area AA in a direction perpendicular to the plane of the base substrate 1, the second area 9 being provided with a raised portion 6.
It should be noted that, fig. 6 only illustrates that the functional layer 7 is located between the array layer 10 and the light emitting layer 2, optionally, the functional layer 7 may also be located between the substrate base plate 1 and the array layer 10, because the second region 9 of the functional layer 7 is provided with the raised portion 6, one side of the raised portion 6, which is away from the substrate base plate 1, is inclined toward the display area AA, and a film layer, which is away from one side of the substrate base plate 1, of the raised portion 6 is not changed or approximately not changed in thickness in a subsequent manufacturing process, so that the film layers, which are away from one side of the substrate base plate 1, of the raised portion 6 all have inclined surfaces, and the inclined angles are the same as the inclined angles, which are away from one side of the substrate base plate 1, of the raised portion 6, and optionally, the functional layer 7 is a film layer that is conventionally arranged when the display panel 100 is manufactured. Specifically, the functional layer 7 may be formed by forming a planar functional layer 7, performing grooving or exposure on the first region 8 of the functional layer 7 to form the raised portion 6 with an inclined surface on the second region 9, or directly forming the raised portion 6 with an inclined surface on the second region 9 of the functional layer 7 by exposure or stamping, and the material of the functional layer 7 may be organic material or inorganic material, and the organic material in the display panel 100 may be a thicker film layer, preferably an organic material, which is not limited in this embodiment.
It can be understood that the functional layer 7 is used for raising the non-display area BB, so that the light-emitting surface 5 of the auxiliary light-emitting element 4 disposed in the non-display area BB is inclined toward the display area AA, and most of the light of the auxiliary light-emitting element 4 enters the display area AA to mix with the light-emitting element 3 at the edge of the display area AA, so that the light mixing efficiency is high, and the problem of darker edge of the display area AA is effectively solved.
In some alternative embodiments, with continued reference to fig. 2 and 6, the array layer 10 is located on the side of the substrate base plate 1 near the light-emitting layer 2; the functional layer 7 is positioned on one side of the array layer 10 far away from the substrate base plate 1; the functional layer 7 is reused as a planarization layer 12.
It should be understood that the inclination angle of the side of the raised portion 6 of the functional layer 7 away from the substrate 1 in fig. 6 is only an illustration and can be set according to practical requirements, and the present embodiment is not particularly limited. In manufacturing the display panel 100, the array layer 10 is first manufactured on the substrate base plate 1, and since the surface of the film layer is uneven due to the routing of various metal signals such as the source and drain of the driving transistor in the array layer 10, the planarization layer 12 is provided on the array layer 10, and the film layer is planarized. Due to the effect of the planarization film layer, the thickness of the planarization film layer is relatively thicker than that of other insulation layers, and the planarization film layer is more suitable for manufacturing an inclined raising layer; further, by reusing the functional layer 7 as the planarizing layer 12, the number of manufacturing processes can be reduced, and it is not necessary to separately manufacture one functional layer 7 to form the raised portion 6. The raised portion 6 of the functional layer 7 can raise the auxiliary light emitting element 4 in the non-display area BB, so that the light emitting surface 5 of the auxiliary light emitting element 4 is inclined, and the light emitted from the light emitting surface 5 of the auxiliary light emitting element 4 is mixed with the light emitting element 3 at the edge of the display area AA, thereby improving the problem of low brightness at the edge of the display area AA, reducing the thickness of the display panel 100, and realizing the lightness and thinness of the display panel 100.
In some alternative embodiments, referring to fig. 2 and 7, fig. 7 is a cross-sectional view taken along line M-M' in fig. 2, and the present embodiment provides a display panel 100 further including: the array layer 10 is positioned on one side of the substrate base plate 1 close to the light-emitting layer 2; the functional layer 7 is located in the middle of the base substrate 1 and the array layer 10.
It can be understood that, in fig. 7, only the functional layer 7 is illustrated as being located between the substrate base plate 1 and the array layer 10, and the raised portion 6 of the functional layer 7 raises the auxiliary light emitting element 4 in the non-display area BB, so that the light emitting surface 5 of the auxiliary light emitting element 4 is inclined toward the display area AA; optionally, a film layer structure may be separately fabricated on the substrate 1 as the functional layer 7; optionally, the functional layer 7 may also be reused as the buffer layer 11 between the substrate 1 and the array layer 10, the buffer layer 11 is a film layer that is provided in the display panel 100 itself, and by reusing the functional layer 7 as the buffer layer 11, the manufacturing process can be reduced, and it is not necessary to separately manufacture one functional layer 7 to form the raised portion 6, so that most of light of the auxiliary light emitting element 4 enters the display area AA and is mixed with the light emitting element 3 at the edge of the display area AA, the light mixing effect is better, and the problem that the brightness at the edge of the display area AA is lower than the brightness at the middle position of the display area AA is effectively improved. Optionally, the functional layer 7 is located between the substrate base plate 1 and the array layer 10, and may be reused as the buffer layer 11 between the substrate base plate 1 and the array layer 10, so that the thickness of the display panel 100 can also be reduced, and the display panel 100 is light and thin.
In some alternative embodiments, with continued reference to fig. 2 and 6, the material of the functional layer 7 is an organic insulating material.
It can be understood that, when the inclination angle of the light emitting surface 5 of the raised portion 6 is larger, the thickness of the raised portion 6 at the end away from the display area AA is also higher, and since the organic insulating material can be used for manufacturing a thicker film layer, the thickness requirement of the functional layer 7 at the time when the inclination angle of the light emitting surface 5 of the raised portion 6 is larger can be met, and therefore, the material of the functional layer 7 is preferably the organic insulating material, which is beneficial to implementation.
In some alternative embodiments, referring to fig. 2 and 8, fig. 8 is a cross-sectional view taken along the direction M-M' in fig. 2, the auxiliary light emitting element 4 includes a first lead 41 and a second lead 42, the second lead 42 is located on a side of the first lead 41 close to the display area AA, and the length of the first lead 41 is greater than that of the second lead 42 along a direction perpendicular to the plane of the substrate base 1.
It should be noted that fig. 8 only illustrates that the first pin 41 and the second pin 42 of the auxiliary light emitting device 4 are not equal, the second pin 42 is located on one side of the first pin 41 close to the display area AA, the length of the first pin 41 is greater than that of the second pin 42, the light emitting surface 5 of the auxiliary light emitting device 4 is inclined toward one side of the display area AA, and most of the light emitted by the auxiliary light emitting device 4 enters the edge of the display area AA to mix with the light emitting device 3; if the length of the first leads 41 is smaller than the length of the second leads 42, the light-emitting surface 5 of the auxiliary light-emitting element 4 is inclined toward the side away from the display area AA, and the light emitted from the light-emitting surface 5 of the auxiliary light-emitting element 4 cannot enter the display area AA.
It can be understood that by setting different lengths of the pins of the auxiliary light emitting element 4, the inclination direction and the inclination angle of the light emitting surface 5 of the auxiliary light emitting element 4 can be changed, so that most of the light emitted from the light emitting surface 5 of the auxiliary light emitting element 4 is emitted into the display area AA and mixed with the light emitting elements 3 at the edge of the display area AA, thereby improving the problem of darker brightness at the edge of the display area AA.
In some alternative embodiments, with continued reference to fig. 2 and 8, the included angle θ between the light-emitting surface 5 of the auxiliary light-emitting element 4 and the plane of the substrate 1 is in the range of 5 ° to 60 °.
It can be understood that, in fig. 8, the dotted line 13 is parallel to the plane of the substrate base plate 1, the included angle between the dotted line 13 and the light-emitting surface 5 of the auxiliary light-emitting element 4 is 5 ° to 60 °, and optionally, the included angle between the dotted line 13 and the light-emitting surface 5 of the auxiliary light-emitting element 4 may be 5 ° or 60 °. If the included angle between the light-emitting surface 5 of the auxiliary light-emitting element 4 and the dotted line 13 is smaller than 5 °, the included angle between the light-emitting surface 5 of the auxiliary light-emitting element 4 and the dotted line 13 is too small, and the light-emitting surface 5 of the auxiliary light-emitting element 4 is approximately parallel to the plane of the substrate 1, so that most of the light emitted from the light-emitting surface 5 of the auxiliary light-emitting element 4 cannot enter the display area AA and mix with the light-emitting elements 3 at the edge of the display area AA, and the light mixing effect is weak; if the included angle between the light-emitting surface 5 of the auxiliary light-emitting element 4 and the plane of the substrate 1 is greater than 60 °, the inclination angle of the light-emitting surface 5 of the auxiliary light-emitting element 4 is too large, so that the height difference between the end of the light-emitting surface 5 of the auxiliary light-emitting element 4 away from the display area AA and the end of the light-emitting surface 5 of the auxiliary light-emitting element 4 close to the display area AA is too large, which results in an increase in the thickness of the display panel 100, and the stability of the auxiliary light-emitting element 4 is also affected by the too large inclination angle, therefore, the included angle between the light-emitting surface 5 of the auxiliary light-emitting element 4 and the plane of the substrate 1 is preferably within a range of 5 ° to 60 °, but not limited thereto.
In some alternative embodiments, with continuing reference to fig. 2, and with further reference to fig. 9 and 10, fig. 9 is a schematic plan structure diagram of another display panel 100 provided by the present invention, and fig. 10 is a schematic plan structure diagram of another display panel 100 provided by the present invention, where the light-emitting element 3 includes a first light-emitting element 31, the first light-emitting element 31 is adjacent to the auxiliary light-emitting element 4 along a direction from the non-display area BB to the display area AA, and a light-emitting color of at least one auxiliary light-emitting element 4 is different from a light-emitting color of the first light-emitting element 31 closest to the first light-emitting element 4.
It should be noted that fig. 9 only illustrates the array arrangement of the light emitting elements 3 in the display area AA, the light emitting elements 3 are sequentially arranged in the column direction Y to form a light emitting element column, the first light emitting element 31 is located in the first light emitting element column, the auxiliary light emitting elements 4 are sequentially arranged in the column direction Y to form an auxiliary light emitting element column, in the row direction X, the first light emitting element column is flush with the auxiliary light emitting element column, the light emitting element 3 in the first light emitting element column has a different light emitting color from its adjacent auxiliary light emitting element 4, the colors of the plurality of auxiliary light emitting elements 4 may be the same, and optionally, the light emitting colors of any two adjacent auxiliary light emitting elements 4 in the auxiliary light emitting element column in the column direction Y are different, or the light emitting colors of at least two auxiliary light emitting elements 4 are different.
Fig. 10 only illustrates that the light emitting elements 3 are sequentially arranged in the column direction Y to form a light emitting element column, different light emitting elements 3 can emit light of different colors, the first light emitting element 31 is located in the first light emitting element column, the auxiliary light emitting elements 4 are sequentially arranged in the column direction Y to form an auxiliary light emitting element column, the first light emitting element column is staggered with the auxiliary light emitting element column, the light emitting element 3 in the first light emitting element column has a different light emitting color from the adjacent auxiliary light emitting element 4, and the light emitting colors of any two adjacent auxiliary light emitting elements 4 in the auxiliary light emitting element column in the column direction Y are different, alternatively, the light emitting colors of a plurality of auxiliary light emitting elements 4 are all the same, or the light emitting colors of at least two auxiliary light emitting elements 4 are different.
It can be understood that, in the row direction X, whether the auxiliary light emitting element 4 is flush with the light emitting elements 3 at the edge of the display area AA can provide brightness for mixing with the light emitting elements 3 at the edge of the display area AA, so as to improve the problem that the brightness at the edge of the display area AA is lower than the brightness at the middle of the display area AA. When the light emitting color of the auxiliary light emitting element 4 is the same as the light emitting color of the first light emitting element 31 closest to the auxiliary light emitting element 4, the auxiliary light emitting element 4 and the first light emitting element 31 perform light mixing to improve the brightness; when the emission color of the auxiliary light emitting element 4 is different from the emission color of the first light emitting element 31 which is closest thereto, the occurrence of color shift can be avoided while improving the luminance.
In some alternative embodiments, at least one auxiliary light emitting element 4 is a white light emitting element.
It can be understood that, at least one auxiliary light emitting element 4 is a white light emitting element, and since the luminance of the white light emitting element is higher than the luminance of the red, green or blue light emitting element under the same condition, it is more beneficial to increase the luminance at the edge of the display area AA, and further improve the phenomenon that the luminance at the edge of the display area AA is darker.
In some optional embodiments, with continuing reference to fig. 2, the light emitting element 3 further includes a second light emitting element 32 adjacent to the first light emitting element 31, the second light emitting element 32 is located on a side of the first light emitting element 31 away from the auxiliary light emitting element 4, and the light emitting color of the second light emitting element 32 is different from the light emitting color of the first light emitting element 31 and the light emitting color of the auxiliary light emitting element 4.
It should be noted that fig. 2 illustrates an array arrangement of the light emitting elements 3, the light emitting elements 3 are arranged in a column direction Y to form a light emitting element 3 column, the first light emitting element 31 is located in the first light emitting element column, the second light emitting element 32 is located in the second light emitting element column, the auxiliary light emitting element 4 is arranged in the column direction Y to form an auxiliary light emitting element column, the first light emitting element column is located at an edge position of the display area AA, and the auxiliary light emitting element column, the first light emitting element column, and the second light emitting element column are sequentially arranged in a row direction X. Optionally, taking the example that the auxiliary light emitting element 4 is the red light emitting element 3, the first light emitting element 31 is the green light emitting element 3, and the second light emitting element 32 is the blue light emitting element 3, when the red light emitting element 3, the green light emitting element 3, and the blue light emitting element 3 are mixed, the mixed light is mixed into white light, the auxiliary light emitting element 4 not only provides brightness for improving brightness of the display area AA edge, but also can avoid color cast because the auxiliary light emitting element 4, the first light emitting element 31, and the second light emitting element 32 are mixed into white light.
It can be understood that the light emitting color of the second light emitting element 32 is different from the light emitting color of the first light emitting element 31 and the light emitting color of the auxiliary light emitting element 4, so that the auxiliary light emitting element 4, the first light emitting element 31 and the second light emitting element 32 can be mixed to be white light, and when the auxiliary light emitting element 4 is in a bright state, the auxiliary light emitting element mixes with the first light emitting element 31 to improve the problem of darker brightness at the edge of the display area AA, avoid color cast, and further improve the overall display effect.
In some alternative embodiments, referring to fig. 10 and fig. 11, fig. 11 is a cross-sectional view taken along direction N-N' in fig. 10, and the display panel 100 provided in this embodiment further includes: and a quantum dot layer 14 positioned on the side of the light-emitting layer 2 away from the substrate 1, wherein the quantum dot layer 14 comprises a plurality of light conversion units 15, and the light conversion units 15 are at least partially overlapped with the light-emitting element 3 in a direction perpendicular to the plane of the substrate 1.
It should be noted that the light emitting element 3 may be a light emitting element 3 of any color, the light conversion unit 15 may convert the light emitted by the light emitting element 3 into light of any desired color, for example, the light emitting element 3 emits blue light, the light conversion unit 15 includes red quantum dot material, and the blue light emitted by the light emitting element 3 is converted into red light by the light conversion unit 15; in addition, the light conversion unit 15 further includes a green quantum dot material, the blue light emitted from the light emitting element 3 is converted into green light by the light conversion unit 15, but not limited thereto, and the quantum dot material is ZnCdSe2、CdSe、CdTe、CuInS2、ZnCuInS3One or more of (a).
It is understood that, in fig. 11, only the light shielding portion 16 is illustrated between two adjacent light conversion units 15 to prevent color crosstalk between the light conversion units 15 of different colors, and optionally, there is no space between two adjacent light conversion units 15, and a light shielding layer is provided on the quantum dot layer 14 side to prevent color crosstalk between the light conversion units 15 of different colors. The light conversion unit 15 in the quantum dot layer 14 can convert light emitted from the blue light-emitting element 3 into light of another color, thereby contributing to color display of the display panel 100. Fig. 11 illustrates a problem that, in a direction perpendicular to a plane of the substrate base plate 1, the quantum dot layer 14 and the display area AA are at least partially overlapped, but the quantum dot layer 14 is not overlapped with the non-display area BB, and an edge of the quantum dot layer 14 has a defect due to a process error, so that a conversion rate of the quantum dot layer 14 at the edge is reduced, and brightness at the edge of the display area AA is darker, and the auxiliary light emitting element 4 is disposed in the non-display area BB to provide brightness, so that the auxiliary light emitting element 4 mixes with the light emitting element 3 at the edge of the display area AA in a bright state, and brightness at the edge of the display area AA is lower than brightness at the middle position of the display area AA.
In some alternative embodiments, referring to fig. 10 and 12, fig. 12 is another cross-sectional view taken along direction N-N' in fig. 10, and the display panel 100 provided in this embodiment further includes: the color film layer 17 is positioned on one side of the quantum dot layer 14 far away from the luminescent layer 2, and the color film layer 17 covers the quantum dot layer 14 in the direction vertical to the plane of the substrate base plate 1.
In the color film layer 17, the light shielding portion 16 is provided between the color resists of two adjacent colors to prevent color crosstalk of different colors, and therefore, in this case, the quantum dot layer 14 may not be provided with a light shielding layer, a bank, or the like.
It can be understood that, due to the quantum dot layer 14, the color display of the display panel 100 can be realized, and the color film layer 17 is provided to improve the color gamut, so that the display effect is better.
In some alternative embodiments, referring to fig. 13, fig. 13 is a schematic plan view of a display device 200 according to the present invention. The display device 200 provided in this embodiment includes the display panel 100 provided in the above-described embodiment of the present invention. Fig. 13 illustrates the display device 200 by taking a mobile phone as an example, but it should be understood that the display device 200 provided in the embodiment of the present invention may be other display devices 200 having a display function, such as a computer, a television, and a vehicle-mounted display device 200, and the present invention is not limited thereto. The display device 200 provided in the embodiment of the present invention has the beneficial effects of the display panel 100 provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel 100 in the foregoing embodiments, and the detailed description of the embodiment is not repeated herein.
As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:
in the display panel and the display device provided by the invention, the luminous layer comprises a plurality of luminous elements positioned in the display area and a plurality of auxiliary luminous elements positioned in the non-display area, and the auxiliary luminous elements and the luminous elements adjacent to the auxiliary luminous elements mix light; and part of the light-emitting elements are positioned at the edge of the display area, and the light-emitting elements positioned at the edge of the display area are closest to the non-display area, namely the light-emitting elements positioned at the edge of the display area are adjacent to the auxiliary light-emitting elements, and the auxiliary light-emitting elements are mixed with the light-emitting elements positioned at the edge of the display area when being in a bright state, so that the brightness of the edge of the display area is improved, and the brightness uniformity of the center of the display area and the edge of the display area is optimized.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (15)
1. A display panel comprising a display area and a non-display area at least partially surrounding the display area, the display panel further comprising:
a substrate base plate;
and the luminous layer is positioned on one side of the substrate and comprises a plurality of luminous elements positioned in the display area and a plurality of auxiliary luminous elements positioned in the non-display area, and the auxiliary luminous elements and the luminous elements adjacent to the auxiliary luminous elements mix light.
2. The display panel according to claim 1,
and in the direction perpendicular to the plane of the substrate base plate, the distance between one end of the light-emitting surface of the auxiliary light-emitting element, which is far away from the display area, and the substrate base plate is A, the distance between one end of the light-emitting surface of the auxiliary light-emitting element, which is close to the display area, and the substrate base plate is B, and A is greater than B.
3. The display panel according to claim 2, further comprising a bank portion;
the pad height part is at least partially overlapped with the auxiliary light-emitting element along the direction vertical to the plane of the substrate base plate;
in the direction perpendicular to the plane of the substrate base plate, the thickness of one end, close to the display area, of the raised part is smaller than the thickness of one end, far away from the display area, of the raised part.
4. The display panel according to claim 3, further comprising a functional layer;
the functional layer comprises a first area and a second area at least partially surrounding the first area, the first area is at least partially overlapped with the display area along a direction perpendicular to the plane of the substrate base plate, and the second area is provided with the raised part.
5. The display panel according to claim 4, further comprising:
the array layer is positioned on one side of the substrate base plate close to the light-emitting layer;
the functional layer is positioned on one side of the array layer, which is far away from the substrate base plate;
the functional layer is reused as a planarization layer.
6. The display panel according to claim 4, further comprising:
the array layer is positioned on one side of the substrate base plate close to the light-emitting layer;
the functional layer is located between the substrate base plate and the array layer.
7. The display panel according to claim 6, wherein a material of the functional layer is an organic insulating material.
8. The display panel according to claim 2,
the auxiliary light-emitting element comprises a first pin and a second pin, the second pin is positioned on one side of the first pin close to the display area, and the length of the first pin is greater than that of the second pin along the direction perpendicular to the plane of the substrate base plate.
9. The display panel of claim 2, wherein an included angle between the light emitting surface of the auxiliary light emitting element and the plane of the substrate base plate is in a range of 5 ° to 60 °.
10. The display panel according to claim 1, wherein the light-emitting elements include first light-emitting elements which are adjacent to the auxiliary light-emitting elements in a direction in which the non-display region is directed to the display region, and a light-emitting color of at least one of the auxiliary light-emitting elements is different from a light-emitting color of the first light-emitting element which is closest to the auxiliary light-emitting element.
11. The display panel according to claim 1, wherein at least one of the auxiliary light-emitting elements is a white light-emitting element.
12. The display panel according to claim 10, wherein the light-emitting element further comprises a second light-emitting element adjacent to the first light-emitting element, the second light-emitting element is located on a side of the first light-emitting element away from the auxiliary light-emitting element, and a light-emitting color of the second light-emitting element is different from a light-emitting color of the first light-emitting element and a light-emitting color of the auxiliary light-emitting element.
13. The display panel according to claim 1, further comprising:
and the quantum dot layer is positioned on one side of the light-emitting layer far away from the substrate base plate, and comprises a plurality of light conversion units, and the light conversion units are at least partially overlapped with the light-emitting element in the direction vertical to the plane of the substrate base plate.
14. The display panel according to claim 13, further comprising:
and the color film layer is positioned on one side of the quantum dot layer, which is far away from the luminescent layer, and covers the quantum dot layer in the direction vertical to the plane of the substrate base plate.
15. A display device comprising the display panel according to any one of claims 1 to 14.
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|---|---|---|---|
| CN202111650236.6A CN114284332A (en) | 2021-12-30 | 2021-12-30 | Display panel and display device |
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| CN202111650236.6A CN114284332A (en) | 2021-12-30 | 2021-12-30 | Display panel and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115793324A (en) * | 2022-12-09 | 2023-03-14 | 厦门天马微电子有限公司 | Display module and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115793324A (en) * | 2022-12-09 | 2023-03-14 | 厦门天马微电子有限公司 | Display module and display device |
| CN115793324B (en) * | 2022-12-09 | 2024-02-09 | 厦门天马微电子有限公司 | Display module and display device |
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