CN114597230A - Display panel and display device - Google Patents
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- CN114597230A CN114597230A CN202210358875.3A CN202210358875A CN114597230A CN 114597230 A CN114597230 A CN 114597230A CN 202210358875 A CN202210358875 A CN 202210358875A CN 114597230 A CN114597230 A CN 114597230A
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- 239000010409 thin film Substances 0.000 description 4
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- 238000010297 mechanical methods and process Methods 0.000 description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
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Abstract
The invention discloses a display panel, a preparation method thereof and a display device, wherein the display panel comprises a driving substrate; the light-emitting element is positioned on one side of the driving substrate and is electrically connected with the driving substrate; and the shading retaining wall is positioned on one side of the driving substrate and between the two adjacent light-emitting elements, and comprises a first surface close to one side of the driving substrate and a second surface far away from one side of the driving substrate, wherein the covering area of the second surface is larger than that of the first surface along the thickness direction of the display panel. Therefore, the covering area of the second surface is larger than that of the first surface, more external light is absorbed by the larger second surface, and the light-emitting interference of the external light to the display panel is reduced; meanwhile, the coverage area of the first surface is smaller than that of the second surface, a large setting space can be reserved for the light-emitting elements, the preparation difficulty is convenient to reduce, more light-emitting elements can be arranged in the display panel, and the display resolution is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
Display technologies are widely applied to televisions, mobile phones, and public information displays, and display panels for displaying pictures are also diverse and can display rich and colorful pictures.
However, in the existing display panel, since the external light is emitted after being reflected on the surface of the display panel or in the display panel, the external light can interfere with the normal light emission of the display panel, and the display effect of the display panel is affected.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for solving the problem that the normal light emission of the display panel is interfered by external light in the prior art and improving the display effect of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a drive substrate;
a plurality of light emitting elements on one side of the driving substrate, the light emitting elements being electrically connected to the driving substrate;
and the shading retaining wall comprises a first surface close to one side of the driving substrate and a second surface far away from one side of the driving substrate, wherein the thickness direction of the display panel is followed, and the coverage area of the second surface is larger than that of the first surface.
In a second aspect, an embodiment of the present invention provides a method for manufacturing a display panel, where the method is used to manufacture the display panel according to the first aspect, and the method includes:
providing a driving substrate;
preparing a plurality of light emitting elements on one side of the driving substrate;
drive base plate one side, and adjacent two prepare the shading barricade between the light emitting component, the shading barricade is including being close to the first surface of drive base plate one side and keeping away from the second surface of drive base plate one side, wherein, follow display panel thickness direction, the area of coverage on second surface is greater than the area of coverage on first surface.
In a third aspect, an embodiment of the present invention provides a display device, including the display panel according to any one of the first aspect.
According to the display panel provided by the embodiment of the invention, the covering area of the second surface is larger than that of the first surface, and more external light is absorbed by the larger second surface, so that the light interference of the external light to the display panel is reduced; meanwhile, the coverage area of the first surface is smaller than that of the second surface, so that a larger setting space can be reserved for the light-emitting elements, the preparation difficulty is reduced, more light-emitting elements can be arranged in the display panel, and the display resolution is improved; and moreover, the shading retaining wall is arranged between the two adjacent light-emitting elements, and light incident on the shading retaining wall is absorbed by the shading retaining wall, so that the problem of crosstalk between light emergent rays of the two adjacent light-emitting elements can be avoided, and the display effect of the display panel is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic view of a cross-sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a schematic view of another cross-sectional structure taken along the line A-A' in FIG. 1;
FIG. 4 is a schematic view of another cross-sectional structure taken along the line A-A' in FIG. 1;
FIG. 5 is a schematic view of another cross-sectional structure taken along the line A-A' in FIG. 1;
FIG. 6 is a schematic view of another cross-sectional structure taken along the line A-A' in FIG. 1;
FIG. 7 is a flowchart illustrating a method for fabricating a display panel according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating another method for fabricating a display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a cross-section along a direction a-a' in fig. 1, and in conjunction with fig. 1 and fig. 2, a display panel 10 according to an embodiment of the present invention includes a driving substrate 11; a plurality of light emitting elements 12 located on one side of the driving substrate 11, the light emitting elements 12 being electrically connected to the driving substrate 11; the light-shielding wall 13 is located on one side of the driving substrate 11 and between two adjacent light-emitting elements 12, and the light-shielding wall 13 includes a first surface 131 close to one side of the driving substrate 11 and a second surface 132 far from one side of the driving substrate 11, wherein, along a thickness direction (as shown in the X direction), a coverage area of the second surface 132 is larger than that of the first surface 131.
Illustratively, the light emitting element 12 is disposed on one side of the driving substrate 11 and electrically connected to the driving substrate 11, the driving substrate 11 is used for providing a driving signal for the light emitting element 12 to emit light, and the driving signal may include, for example, an anode signal, a cathode signal, and a data signal, so as to ensure that the light emitting element 12 can normally emit light for display. Optionally, a driving circuit (not shown in the figure) for driving the light emitting element 12 to emit light is disposed in the driving substrate 11, and the driving circuit is electrically connected to the light emitting element 12 and is used for driving the light emitting element 12 to emit light. The specific arrangement of the driving circuit may be different according to the driving manner of the light emitting element 12. Specifically, when the driving manner of the light emitting element 12 is active driving, the driving circuit may include a plurality of thin film transistors, and the light emitting element 12 is driven to emit light by the thin film transistors; when the driving method of the light emitting element 12 is passive driving, the driving circuit may include a cathode signal line and an anode signal line, and the light emitting element 12 is driven to emit light by a cathode signal and an anode signal required for the light emitting element 12 to emit light through the cathode signal line and the anode signal line. The embodiment of the present invention does not describe a specific arrangement manner of the driving circuit.
The light emitting element 12 may include a light emitting diode, the light emitting diode may include a light emitting body 121 and an electrode 122 disposed on a surface of the light emitting body 121, the light emitting body 121 may further include a P-type semiconductor layer, a light emitting composite layer, and an N-type semiconductor layer, and correspondingly, the electrode 122 may include an anode and a cathode. The anode is electrically connected with the driving substrate and the P-type semiconductor layer, respectively, and is used for providing holes for the P-type semiconductor layer. The cathode is electrically connected to the driving substrate and the N-type semiconductor layer, respectively, for supplying electrons to the N-type semiconductor layer. The electrons and the holes are recombined in the light-emitting composite layer to emit light, so that normal light-emitting display of the light-emitting element 12 is realized.
Further, the display panel 10 further includes a light-shielding wall 13 located on one side of the driving substrate 11 and located between two adjacent light-emitting elements 12, as shown in fig. 1, the light-shielding wall 13 may form a grid-shaped light-shielding wall, for example, the light-emitting elements 12 are disposed in meshes of the grid-shaped light-shielding wall, and the light-shielding wall 13 may absorb light incident thereon, so as to avoid a crosstalk problem between light emitted from two adjacent light-emitting elements 12, and improve a display effect of the display panel. Further, as shown in fig. 2, the light-shielding retaining wall 13 includes a first surface 131 close to one side of the driving substrate 11 and a second surface 132 far away from one side of the driving substrate 11, and along the thickness direction (X direction shown in the figure) of the display panel 10, the coverage area of the second surface 132 is larger than that of the first surface 131, so that the second surface 132 with a larger area can absorb more external light, interference of the external light reflected in the display panel by the light emitted to the display light of the display panel is reduced, and the display effect of the display panel is improved. Meanwhile, since the coverage area of the first surface 131 is smaller than that of the second surface 132, the first surface 131 with a smaller area reserves a larger setting space for the light emitting elements, which is beneficial to reducing the preparation difficulty, and is beneficial to setting a larger number of light emitting elements in the display panel, thereby improving the display resolution.
It should be noted that, the embodiment of the present invention may further include other structures required for ensuring the normal operation of the display panel, which are not described herein.
In summary, according to the display panel provided by the embodiment of the present invention, by setting the coverage area of the second surface to be larger than the coverage area of the first surface, more external light is absorbed by the larger second surface, so that the light-emitting interference of the external light to the display panel is reduced; meanwhile, the coverage area of the first surface is smaller than that of the second surface, so that a larger setting space can be reserved for the light-emitting elements, the preparation difficulty is reduced, more light-emitting elements can be arranged in the display panel, and the display resolution is improved; moreover, the shading retaining wall is arranged between the two adjacent light-emitting elements, and light incident on the shading retaining wall is absorbed by the shading retaining wall, so that the problem of crosstalk between light emergent rays of the two adjacent light-emitting elements can be avoided, and the display effect of the display panel is improved.
On the basis of the above embodiment, with continuing reference to fig. 2, as shown in fig. 2, the coverage area of the light-shielding walls 13 gradually increases along the thickness direction of the display panel (X direction shown in the figure).
It can be understood that the coverage area of the light-shielding retaining wall 13 is gradually increased along the thickness direction of the display panel, so that the coverage area of the second surface 132 is larger than the area of the first surface 131, and in addition, the light-shielding retaining wall 13 has gradually changed structure and size, so that the light-shielding retaining wall 13 has a regular structure, the manufacturing process is simple, and space can be saved, thereby reserving a larger setting space for the light-emitting element.
As a possible implementation manner, fig. 3 is another schematic cross-sectional structure view along a-a' direction in fig. 1, and as shown in fig. 3, the display panel 10 further includes a first reflective structure 14, the first reflective structure 14 includes a first reflective portion 141 and a reflective opening 142, the first reflective portion 141 is disposed around the reflective opening 142; the first reflection portion 141 is disposed between the light emitting element 12 and the light blocking wall 13; the light emitting element 12 includes a first light emitting surface 123 on a side away from the driving substrate 11, and the reflective opening 142 covers the first light emitting surface 123 along a thickness direction (shown as an X direction) of the display panel 10.
Illustratively, the first reflective structure 14 includes a first reflective portion 141 and a reflective opening 142, wherein the first reflective portion 141 is disposed between the light emitting element 12 and the light blocking wall 13, and the first reflective portion 141 is disposed around the reflective opening 142, so that at least a portion of the light emitted by the light emitting element 142 is reflected by the first reflective portion 141 and then exits through the reflective opening 142.
Specifically, the light-shielding retaining wall 13 is disposed between two adjacent light-emitting elements 12, so as to avoid crosstalk between light-emitting of the adjacent light-emitting elements 12, but since the light-shielding retaining wall 13 can absorb light emitted from the light-emitting surface on the side of the light-emitting element 12 to the light-shielding retaining wall 13, the light-shielding retaining wall 13 can negatively affect the light-emitting efficiency of the light-emitting element 12, resulting in a decrease in the light-emitting efficiency of the light-emitting element 12, and accordingly, by disposing the first reflection structure 14, light emitted from the light-emitting element 12 to the light-shielding retaining wall 13 originally is reflected by the first reflection portion 141 and then emitted through the reflection opening 142, while crosstalk between light-emitting of two adjacent light-emitting elements 12 is avoided, an absorption effect of the light-shielding retaining wall 13 on light is reduced, and the light-emitting efficiency of the light-emitting element 12 is increased.
Further, the light emitting element 12 further includes a first light emitting surface 123 away from the driving substrate, and the reflective opening 142 covers the first light emitting surface 123 along a thickness direction (e.g., an X direction shown in the figure) of the display panel 10, so that the light emitted from the first light emitting surface 123 can be emitted through the reflective opening 142, and the light of the light emitting element 12 can be emitted normally.
On the basis of the foregoing embodiment, with reference to fig. 3, the first reflection portion 141 includes a first end portion 1411 away from the driving substrate 11, and a distance between the first end portion 1411 and the driving substrate 11 along a thickness direction (e.g., an X direction in the figure) of the display panel 10 is greater than or equal to a distance between the first light emitting surface 123 and the driving substrate 11.
Specifically, the distance between the first end 1411 located at the uppermost end of the first reflection portion 141 and the driving substrate 11 is greater than or equal to the distance between the first light emitting surface 123 and the driving substrate 11, that is, the height of the first reflection portion 141 is greater than the height of the side light emitting surface of the light emitting element 12, so that light emitted from the side light emitting surface of the light emitting element 12 can be incident on the first reflection portion 141 and emitted from the reflection opening 142 after being reflected by the first reflection portion 141, the light emitting efficiency of the light emitting element 12 is improved, and the display effect of the display panel is improved.
Alternatively, with continued reference to fig. 3, the height of the first reflective portion 141 is the same as the height of the light-shielding wall 13 in the thickness direction of the display panel 10 (the X direction as shown in the figure).
It can be understood that, if the height of the first reflection portion 141 is lower than the height of the light-shielding wall 13, that is, the first reflection portion 141 exposes part of the light-shielding wall 13, which causes part of the light emitted from the light-emitting surface of the light-emitting element 12 to be absorbed by the light-shielding wall, thereby affecting the light-emitting efficiency of the light-emitting element 12; if the height of the first reflection portion 141 is higher than that of the light-shielding retaining wall 13, part of the external light is reflected by the raised first reflection portion 141, so as to interfere with the light output of the light-emitting element 12, therefore, in this embodiment, the height of the first reflection portion 141 is the same as that of the light-shielding retaining wall 13, so that the light output from the light output surface on the side of the light-emitting element 12 can be ensured to be reflected by the first reflection portion 141 and then output from the reflection opening 142, and the light output efficiency of the light-emitting element 12 is improved; but also can reduce the reflection of the external environment light and improve the display effect of the display panel.
Optionally, continuing to refer to fig. 3, the light-shielding wall 13 includes a wall sidewall 133 adjacent to the light-emitting element 12, and the first reflective portion 141 is attached to the wall sidewall 133.
Specifically, the first reflective structure 14 includes a first reflective portion 141, the light-shielding wall 13 includes a wall sidewall 133 close to one side of the light-emitting element 12, and the first reflective portion 141 is attached to the wall sidewall 133, that is, the first reflective portion 141 is attached to the surface of the wall sidewall 133, so as to ensure that the first reflective portion 141 is not suspended, and ensure that the first reflective portion 141 has a stable structure; meanwhile, the first reflecting portion 141 and the retaining wall side wall 133 are attached to each other, so that the gap distance between the first reflecting portion 141 and the retaining wall side wall 133 can be minimized, the space utilization rate can be improved, more light emitting elements can be arranged in the saved space, and the high-resolution display panel can be realized.
On the basis of the foregoing embodiment, fig. 4 is a schematic diagram of another cross-sectional structure along a-a 'direction in fig. 1, fig. 5 is a schematic diagram of another cross-sectional structure along a-a' direction in fig. 1, as shown in fig. 4 and fig. 5, the display panel 10 further includes a light adjusting structure 15, the light adjusting structure 15 is at least partially located on the light emitting side of the light emitting element 12, the light adjusting structure 15 is used for adjusting the emergent angle of the light emitted from the light emitting element 12, the light adjusting structure 15 includes a first adjusting structure 151 and a second adjusting structure 152 sequentially disposed on the emergent light propagation path, and the refractive index of the second adjusting structure 152 is greater than that of the first adjusting structure 151.
For example, as shown in fig. 4 and fig. 5, the display panel according to the embodiment of the present invention may further include a light adjusting structure 15, where at least a portion of the light adjusting structure 15 is located on the light emitting side of the light emitting element 12, and is used to adjust an emitting angle of the light emitted from the light emitting element 12, so as to ensure that the light is emitted toward the light emitting side of the display panel after passing through the light adjusting structure 15, and ensure the display effect of the display panel. Specifically, the light ray adjusting structure 15 includes a first adjusting structure 151 and a second adjusting structure 152 sequentially disposed on the outgoing light ray propagation path, and light emitted from the light-emitting surface of the light-emitting element 12 propagates in the first adjusting structure 151, is reflected by the first reflecting portion 141, and then enters the second adjusting structure 152 from the interface between the first adjusting structure 151 and the second adjusting structure 152. Since the refractive indexes of the first and second adjusting structures 151 and 152 are different, light is refracted at the interface between the first and second adjusting structures 151 and 152, and since the refractive index of the second adjusting structure 152 is greater than that of the first adjusting structure 151, when light is incident on a medium having a large refractive index from a medium having a small refractive index, the refracted light is deflected toward the normal direction, and the refraction angle is smaller than the incident angle. Therefore, the light is converged toward the middle at the interface between the first adjusting structure 151 and the second adjusting structure 152, and the light adjusting structure 15 adjusts the emitting angle of the light emitted from the light emitting element 12, so as to improve the display effect of the display panel.
Optionally, as shown in fig. 4 and fig. 5, at least the first adjusting structure 151 covers the light emitting element 12, so that the forward light emission and the side light emission of the light emitting element 12 can be adjusted, and the light emission angle of the light emitting element is ensured. Further, at least the first light adjusting structure 151 covers and protects the light emitting device 12, so as to ensure that the light emitting device 12 has a stable structure and the light emitting device 12 works normally. Optionally, with continued reference to fig. 4 and fig. 5, the display panel 10 further includes a first reflective structure 14, the first reflective structure 14 includes a first reflective portion 141 and a reflective opening 142, the first reflective portion 141 is disposed between the first adjusting structure 151 and the light blocking wall 13; the second adjusting structure 152 is disposed corresponding to the reflective opening 142.
It can be understood that the first reflection portion 141 is disposed between the first adjustment structure 151 and the light-shielding wall 13, and is configured to reflect light emitted from the light-emitting device 12 to the light-shielding wall 13 and to emit the light into the second adjustment structure 152 through the reflection opening 142, and therefore, the second adjustment structure 152 is disposed corresponding to the reflection opening 142, and the setting is simple, and it can be ensured that light reflected to the reflection opening 142 can adjust an emergent angle of the emergent light of the light-emitting device 12 through the second adjustment structure 152, so that the light is converged toward the middle, and the display effect is improved.
Further, when the first adjusting structure 151 includes the light emitting element 12 and the first reflective portion 141 is located between the first adjusting structure 151 and the light blocking wall 13, the first adjusting structure 151 may further provide a preparation carrier for the first reflective portion 141, that is, by preparing the first reflective portion 141 on the first adjusting structure 151, for example, depositing or sputtering a material of the first reflective portion 141 on the surface of the first adjusting structure 151, so that an additional preparation carrier for the first reflective portion 141 is not required, and the preparation process of the first reflective portion 141 is ensured to be simple.
It should be noted that the second adjusting structure 152 is disposed corresponding to the reflective opening 142, and it is understood that the second adjusting structure 152 is disposed at least above the reflective opening 142. Specifically, as shown in fig. 4 or fig. 5, the second adjusting structure 152 is located on a side of the first adjusting structure 151 away from the driving substrate 11; alternatively, in other embodiments, the second adjusting structure 152 may further cover the first adjusting structure 151, that is, the light adjusting structure 15 entirely covers the light emitting element 12, and the specific arrangement manner of the second adjusting structure 152 in the embodiment of the present invention is not limited, and may be set according to the actual requirements of the display panel and the manufacturing method thereof, which is not limited in the embodiment of the present invention.
Optionally, with continued reference to fig. 4 and fig. 5, the first adjusting structure 151, the first reflecting portion 141, and the light-shielding wall 13 are sequentially attached to each other, so as to ensure that the first adjusting structure 151, the first reflecting portion 141, and the light-shielding wall 13 are structurally stable; meanwhile, the first adjusting structure 151, the first reflecting part 141 and the light-shielding retaining wall 13 are sequentially attached to each other, so that the gap distance between the first adjusting structure 151 and the first reflecting part 141 and the gap distance between the first reflecting part 141 and the retaining wall side wall 133 can be minimized, the space utilization rate can be improved, more light-emitting elements can be arranged in the saved space, and the high-resolution display panel can be realized.
With continued reference to fig. 4 and 5, based on the above-described embodiment, the cross-sectional shape of the first adjustment structure 151 includes an arc or a trapezoid.
Specifically, fig. 4 illustrates an example in which the cross-sectional shape of the first adjustment structure 151 is a trapezoid, and fig. 5 illustrates an example in which the cross-sectional shape of the first adjustment structure 151 is an arc. The first adjusting structure 151 is simple in structure and convenient to manufacture because the cross-sectional shape of the first adjusting structure 151 is arc-shaped or trapezoidal.
As a possible implementation manner, fig. 6 is another schematic cross-sectional structure view along a-a' direction in fig. 1, and as shown in fig. 6, the display panel 10 further includes a second reflective structure 16, the second reflective structure 16 is disposed on a side surface of the driving substrate 11 close to the light emitting element 12, and the second reflective structure 16 at least partially overlaps the second surface 132 along a thickness direction (X direction shown in the figure) of the display panel 10.
Specifically, as shown by the light propagation path in fig. 6, a part of the light emitted from the side light-emitting surface by the light-emitting element 12 is reflected by the first reflection portion 141 and then emitted from the reflection outlet 142; part of the light emitted from the lower side is reflected by the first reflecting portion 141 and then emitted toward the driving substrate 11, and is reflected by the second reflecting structure 16 provided on the driving substrate 11, and then the part of the light is emitted from the reflecting opening 142. The second reflecting structure 16 in this embodiment may reflect the light reflected by the first reflecting portion 141 again and emit the light from the reflecting opening 142, or directly reflect the light incident on the light emitting element 12 and then emit the light from the reflecting opening 142 through the reflection of the first reflecting portion 141, thereby further improving the light emitting efficiency of the light emitting element 12.
Alternatively, as shown with continued reference to fig. 6, the light emitting element 12 includes an electrode 122, the driving substrate 11 includes a connection electrode 111, and the connection electrode 111 is electrically connected to the electrode 122; the second reflective structure 16 is disposed in the same layer as the connection electrode 111.
Illustratively, the driving substrate 11 is used for providing driving signals for the light emitting elements 12 to emit light, and the driving signals may include, for example, an anode signal, a cathode signal, and a data signal, so as to ensure that the light emitting elements 12 can normally emit light for display. Specifically, the driving substrate 11 includes a connection electrode 111, the light emitting element 12 includes an electrode 122, the connection electrode 111 is electrically connected to the electrode 122, and the connection electrode 111 supplies a driving signal to the light emitting element 12 based on the connection relationship.
In addition, the second reflective structure 16 and the connection electrode 111 can be arranged in the same layer, so that the structure of the display panel film layer is simple; meanwhile, the second reflective structure 16 and the connection electrode 111 can be prepared in the same process, so that the process flow is reduced, and the preparation process of the display panel is simple.
On the basis of the above embodiments, the light emitting element may include a micro light emitting element, such as a micro-LED, which has a small volume and a high spatial integration level, and is convenient for implementing a high-resolution display panel, and ensures that the display effect of the display panel is good.
Based on the same inventive concept, the embodiment of the invention also provides a preparation method of the display panel, which is used for preparing the display panel provided by the embodiment. Fig. 7 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present invention, and as shown in fig. 7, the method for manufacturing a display panel according to an embodiment of the present invention includes:
and S110, providing a driving substrate.
The driving substrate is provided with a driving circuit for driving the light-emitting element to emit light, and the driving circuit is electrically connected with the light-emitting element and used for driving the light-emitting element to emit light. Optionally, a driving circuit for driving the light emitting element to emit light is disposed in the driving substrate, and the specific arrangement manner of the driving circuit may be different according to the different driving manners of the light emitting element. Specifically, when the driving mode of the light emitting element is active driving, the driving circuit may include a plurality of thin film transistors, and the light emitting element is driven to emit light by the thin film transistors; when the light emitting element is driven passively, the driving circuit may include a cathode signal line and an anode signal line, and the light emitting element is driven to emit light by a cathode signal and an anode signal required for light emission of the light emitting element through the cathode signal line and the anode signal line. The embodiment of the present invention does not describe a specific arrangement manner of the driving circuit.
And S120, preparing a plurality of light-emitting elements on one side of the driving substrate.
The light emitting elements may include light emitting diodes, and a plurality of light emitting elements may be prepared on one side of the driving substrate by a transfer method, for example, the plurality of light emitting elements may be transferred by a pickup head, or the plurality of light emitting elements may be transferred by a fluid mechanical method, or the plurality of light emitting elements may be transferred by a mechanical method, and the specific transfer method is not limited in the embodiment of the present invention. Alternatively, a plurality of light emitting elements may be directly prepared on one side of the driving substrate in a manner of directly depositing the semiconductor layer and the light emitting composite layer on one side of the driving substrate.
S130, preparing a shading retaining wall on one side of the driving substrate and between two adjacent light-emitting elements.
The shading retaining wall comprises a first surface close to one side of the driving substrate and a second surface far away from one side of the driving substrate, wherein the covering area of the second surface is larger than that of the first surface along the thickness direction of the display panel.
Specifically, the shading retaining wall can be made of black shading materials, the shading retaining wall is arranged between two adjacent light-emitting elements, light incident on the shading retaining wall is absorbed through the shading retaining wall, the problem of crosstalk between light emergent of the two adjacent light-emitting elements can be avoided, and the display effect of the display panel is improved.
Furthermore, the coverage area of the second surface of the shading retaining wall is larger than that of the first surface, and the larger second surface absorbs more external light rays, so that the light-emitting interference of the external light rays on the display panel is reduced; meanwhile, the coverage area of the first surface is smaller than that of the second surface, a large setting space can be reserved for the light-emitting elements, the preparation difficulty is convenient to reduce, more light-emitting elements can be arranged in the display panel, and the display resolution is improved.
In summary, in the preparation method for preparing the display panel provided by the embodiment of the invention, the shading retaining wall is prepared between the two adjacent light-emitting elements on one side of the driving substrate, the coverage area of the second surface of the shading retaining wall is larger than that of the first surface, and more external light rays are absorbed through the larger second surface, so that the light-emitting interference of the external light rays on the display panel is reduced; meanwhile, the coverage area of the first surface is smaller than that of the second surface, so that a larger setting space can be reserved for the light-emitting elements, the preparation difficulty is reduced, more light-emitting elements can be arranged in the display panel, and the display resolution is improved; and moreover, the shading retaining wall is arranged between the two adjacent light-emitting elements, and light incident on the shading retaining wall is absorbed by the shading retaining wall, so that the problem of crosstalk between light emergent rays of the two adjacent light-emitting elements can be avoided, and the display effect of the display panel is improved.
On the basis of the foregoing embodiment, fig. 8 is a flowchart illustrating another method for manufacturing a display panel according to an embodiment of the present invention, and specifically, how to manufacture the first reflective structure is described on the basis of the foregoing embodiment. As shown in fig. 8, a method for manufacturing a display panel according to an embodiment of the present invention includes:
s210, providing a driving substrate.
S220, preparing a plurality of light-emitting elements on one side of the driving substrate.
And S230, preparing a light ray adjusting structure.
The light ray adjusting structure comprises a first adjusting structure and a second adjusting structure which are sequentially arranged on the emergent light ray propagation path, and the refractive index of the second adjusting structure is larger than that of the first adjusting structure.
Exemplarily, at least a part of the light adjusting structure is located on the light emitting side of the light emitting device, and is configured to adjust an emitting angle of the light emitted from the light emitting device, so as to ensure that the light is emitted toward the light emitting side of the display panel after passing through the light adjusting structure, and ensure a display effect of the display panel.
S240, preparing a first reflecting layer on the surface of the light ray adjusting structure, wherein the first reflecting layer covers the light ray adjusting structure.
S250, preparing a shading retaining wall between the two adjacent light ray adjusting structures, covering a part of the first reflecting layer by the shading retaining wall, and etching the first reflecting layer based on the shading retaining wall to obtain the first reflecting structure.
Specifically, the light ray adjusting structure is used as a preparation carrier of the first reflecting layer, and a reflecting layer material, such as a metal material, is directly deposited or sputtered in the light ray adjusting structure to obtain the first reflecting layer, so that the preparation carrier of the first reflecting layer does not need to be separately provided, and the preparation process of the first reflecting layer is simple. Furthermore, the shading retaining wall is used as an etching barrier layer of the first reflection structure, the first reflection layer part exposed by the shading retaining wall is etched to form a reflection opening in the first reflection structure, and the first reflection layer part covered by the shading retaining wall forms the first reflection part, so that a photoetching process can be saved when the first reflection layer is etched, the process flow is reduced, the preparation efficiency is improved, and the preparation cost is saved.
It should be noted that, in the embodiment of the present invention, the specific sequence of step S220 and step S230 is not limited, that is, the light emitting element may be prepared first, and the light adjusting structure is prepared in the gap between the light emitting elements, or the light adjusting structure may be prepared first, and the light emitting element is prepared in the gap for light adjustment decoupling.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, fig. 9 is a schematic structural diagram of the display device provided in the embodiment of the present invention, and as shown in fig. 9, the display device 1 includes the display panel 10 described in any of the embodiments above, so that the display device 1 provided in the embodiment of the present invention has the corresponding beneficial effects in the embodiments above, and details are not repeated here. For example, the display device 1 may be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and an in-vehicle display device, which is not limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (17)
1. A display panel, comprising:
a drive substrate;
a plurality of light emitting elements on one side of the driving substrate, the light emitting elements being electrically connected to the driving substrate;
and the shading retaining wall comprises a first surface close to one side of the driving substrate and a second surface far away from one side of the driving substrate, wherein the thickness direction of the display panel is followed, and the coverage area of the second surface is larger than that of the first surface.
2. The display panel according to claim 1, wherein a coverage area of the light blocking walls is gradually increased in a thickness direction of the display panel.
3. The display panel according to claim 1, further comprising a first reflective structure including a first reflective portion and a reflective opening, the first reflective portion being disposed around the reflective opening;
the first reflecting part is arranged between the light-emitting element and the shading retaining wall;
the light-emitting element comprises a first light-emitting surface far away from one side of the driving substrate, and the reflection opening covers the first light-emitting surface along the thickness direction of the display panel.
4. The display panel according to claim 3, wherein the first reflection portion includes a first end portion on a side away from the driving substrate;
the distance between the first end and the driving substrate is greater than or equal to the distance between the first light emitting surface and the driving substrate along the thickness direction of the display panel.
5. The display panel according to claim 3, wherein the height of the first reflection portion is the same as the height of the light blocking wall in the thickness direction of the display panel.
6. The display panel according to claim 3, wherein the light-shielding walls include a wall side wall near a side of the light-emitting element;
the first reflection part is attached to the side wall of the retaining wall.
7. The display panel of claim 1, further comprising a light adjusting structure, wherein the light adjusting structure is at least partially located on the light emitting side of the light emitting device, and the light adjusting structure is configured to adjust the emitting angle of the light emitted from the light emitting device;
the light ray adjusting structure comprises a first adjusting structure and a second adjusting structure which are sequentially arranged on the emergent light ray propagation path, and the refractive index of the second adjusting structure is larger than that of the first adjusting structure.
8. The display panel according to claim 7, wherein at least the first adjustment structure encapsulates the light emitting element.
9. The display panel according to claim 8, wherein the display panel further comprises a first reflective structure, the first reflective structure comprises a first reflective portion and a reflective opening, and the first reflective portion is disposed between the first adjusting structure and the light-shielding wall;
the second adjusting structure is arranged corresponding to the reflecting opening.
10. The display panel according to claim 9, wherein the first adjusting structure, the first reflecting portion and the light blocking wall are sequentially attached to each other.
11. The display panel of claim 8, wherein the cross-sectional shape of the first adjustment structure comprises an arc or a trapezoid.
12. The display panel according to claim 1, further comprising a second reflective structure disposed on a surface of the driving substrate adjacent to the light emitting elements; the second reflecting structure at least partially overlaps the second surface in a thickness direction of the display panel.
13. The display panel according to claim 12, wherein the light-emitting element comprises an electrode;
the driving substrate comprises a connecting electrode which is electrically connected with the electrode;
the second reflection structure and the connection electrode are arranged on the same layer.
14. The display panel according to claim 1, wherein the light-emitting element comprises a micro light-emitting diode.
15. A method for manufacturing a display panel, for manufacturing the display panel according to any one of claims 1 to 14, the method comprising:
providing a driving substrate;
preparing a plurality of light emitting elements on one side of the driving substrate;
drive base plate one side, and adjacent two prepare the shading barricade between the light emitting component, the shading barricade is including being close to the first surface of drive base plate one side and keeping away from the second surface of drive base plate one side, wherein, follow display panel thickness direction, the area of coverage on second surface is greater than the area of coverage on first surface.
16. The manufacturing method according to claim 15, further comprising, after manufacturing a plurality of light emitting elements on the side of the driving substrate:
preparing a light ray adjusting structure, wherein the light ray adjusting structure comprises a first adjusting structure and a second adjusting structure which are sequentially arranged on the emergent light ray propagation path, and the refractive index of the second adjusting structure is greater than that of the first adjusting structure;
preparing a first reflecting layer on the surface of the light ray adjusting structure, wherein the first reflecting layer covers the light ray adjusting structure;
preparing a shading retaining wall between two adjacent light ray adjusting structures, wherein the shading retaining wall covers a part of the first reflecting layer;
and etching the first reflecting layer based on the shading retaining wall to obtain a first reflecting structure.
17. A display device characterized by comprising the display panel according to any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210358875.3A CN114597230A (en) | 2022-04-06 | 2022-04-06 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210358875.3A CN114597230A (en) | 2022-04-06 | 2022-04-06 | Display panel and display device |
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| CN114597230A true CN114597230A (en) | 2022-06-07 |
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| CN202210358875.3A Pending CN114597230A (en) | 2022-04-06 | 2022-04-06 | Display panel and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115172383A (en) * | 2022-06-30 | 2022-10-11 | 厦门天马微电子有限公司 | Light-emitting panel, preparation method thereof, display device and backlight module |
| CN115954428A (en) * | 2023-02-27 | 2023-04-11 | 惠科股份有限公司 | Display panel |
-
2022
- 2022-04-06 CN CN202210358875.3A patent/CN114597230A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115172383A (en) * | 2022-06-30 | 2022-10-11 | 厦门天马微电子有限公司 | Light-emitting panel, preparation method thereof, display device and backlight module |
| CN115954428A (en) * | 2023-02-27 | 2023-04-11 | 惠科股份有限公司 | Display panel |
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