CN115273678A - Display panel and display device - Google Patents

Abstract

The present application provides a display panel and a display device, comprising: at least two sub-display panels, a splicing area is provided between adjacent sub-display panels, the splicing area includes a splicing seam, the splicing area is provided with a first light-emitting device, and the sub-display panel A thin film transistor is provided, the first light emitting device is connected to the thin film transistor, and the thin film transistor provides a driving signal for the first light emitting device. That is to say, by arranging the first light-emitting device in the splicing area of the adjacent sub-display panels, and using the thin-film transistor disposed on the sub-display panel to provide the driving signal for the first light-emitting device, it is not necessary to additionally arrange the thin-film transistor in the splicing area, so as to realize Not only can the display be performed in the seam area to improve the display effect, but also complex driving structures can be avoided at the seam, the cost of the display panel can be reduced, and the user experience can be improved.

Description

Display panel and display device

technical field

The present invention relates to the field of display technology, in particular to a display panel and a display device.

Background technique

With the rapid development of terminal equipment, higher requirements are put forward for the display of terminal equipment. The current display technology field is mainly divided into liquid crystal display (LCD), organic light emitting display (OLED) and micro light emitting diode (Micro-LED) display.

At present, there is still a demand for large-screen display, such as concerts, press conferences and other scenes that need to be displayed on a larger display screen. When large-screen display is required, a plurality of small display screens are spliced and assembled into a large display screen. Each small display screen has a corresponding driving structure, and the corresponding small display screen is driven by the driving structure.

However, in the large display screen assembled by such splicing, there are splicing seams between adjacent splicing screens, and the splicing seams will affect the display effect.

Contents of the invention

In view of this, the purpose of the present application is to provide a display panel and a display device, which can improve the display effect of the display panel and improve user experience.

An embodiment of the present application provides a display panel, including:

There are at least two sub-display panels, and there is a splicing area between adjacent sub-display panels, and the splicing area includes a splicing seam;

The splicing area is provided with a first light-emitting device;

The sub-display panel is provided with a thin film transistor, the first light emitting device is connected to the thin film transistor, and the thin film transistor provides a driving signal for the first light emitting device.

An embodiment of the present application provides a display device, which is characterized by comprising the display panel according to any one of the foregoing embodiments.

The display panel provided by the embodiment of the present application includes: at least two sub-display panels, there is a splicing area between adjacent sub-display panels, the splicing area includes a splicing seam, the splicing area is provided with a first light-emitting device, and the sub-display panels are provided with The thin film transistor is connected to the first light emitting device and the thin film transistor, and the thin film transistor provides a driving signal for the first light emitting device. That is to say, by arranging the first light-emitting device in the splicing area of adjacent sub-display panels, and using the thin-film transistor disposed on the sub-display panel to provide a driving signal for the first light-emitting device, there is no need to additionally arrange a thin-film transistor in the splicing area to realize It can not only display in the splicing seam area, improve the display effect, but also avoid setting a complicated driving structure at the splicing seam, reduce the cost of the display panel, and improve user experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present application, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

FIG. 1 is a schematic top view structural diagram of a display panel provided by an embodiment of the present application;

Fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the present application along the AA direction shown in Fig. 1;

FIG. 3 is a schematic top view structural diagram of another display panel provided by an embodiment of the present application;

Fig. 4 is a schematic cross-sectional structure diagram of an embodiment of the present application along the AA direction shown in Fig. 3;

Fig. 5 is a schematic structural diagram of a first light emitting device provided by an embodiment of the present application;

FIG. 6 is a schematic top view structural diagram of another display panel provided by the embodiment of the present application;

FIG. 7 is a schematic cross-sectional structure diagram of an embodiment of the present application along the AA direction shown in FIG. 6;

FIG. 8 is a schematic top view structural diagram of another display panel provided by the embodiment of the present application;

FIG. 9 is a schematic plan view of a display device provided by an embodiment of the present application.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings.

In the following description, a lot of specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, and those skilled in the art can do it without violating the content of the application. By analogy, the present application is therefore not limited by the specific embodiments disclosed below.

Secondly, the present application is described in detail in combination with schematic diagrams. When describing the embodiments of the present application in detail, for the convenience of explanation, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not be limited here. The protection scope of this application. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual production.

With the rapid development of terminal equipment, higher requirements are put forward for the display of terminal equipment. The current display technology field is mainly divided into liquid crystal display (LCD), organic light emitting display (OLED) and micro light emitting diode (Micro-LED) display.

At present, there is still a demand for large-screen display, such as concerts, press conferences and other scenes that need to be displayed on a larger display screen. When large-screen display is required, a plurality of small display screens are spliced and assembled into a large display screen. Each small display screen has a corresponding driving structure, and the corresponding small display screen is driven by the driving structure.

However, in the large display screen assembled in this way, there is a splicing seam between adjacent splicing screens, and the splicing seam is the frame of the adjacent splicing screen, which cannot be displayed, and will refract and reflect light, resulting in When performing splicing display, the display effect is poor due to the splicing seam.

Based on this, an embodiment of the present application provides a display panel, including: at least two sub-display panels, a splicing area is provided between adjacent sub-display panels, the splicing area includes a splicing seam, and the splicing area is provided with a first light-emitting device, The sub-display panel is provided with a thin film transistor, the first light emitting device is connected to the thin film transistor, and the thin film transistor provides a driving signal for the first light emitting device. That is to say, by arranging the first light-emitting device in the splicing area of adjacent sub-display panels, and using the thin-film transistor disposed on the sub-display panel to provide a driving signal for the first light-emitting device, there is no need to additionally arrange a thin-film transistor in the splicing area to realize It can not only display in the splicing seam area, improve the display effect, but also avoid setting a complicated driving structure at the splicing seam, reduce the cost of the display panel, and improve user experience.

In order to better understand the technical solutions and technical effects of the present application, specific embodiments will be described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , it is a schematic top view structural diagram of a display panel provided by an embodiment of the present application. FIG. 2 is a schematic cross-sectional structure diagram along the AA direction shown in FIG. 1 of the embodiment of the present application. The display panel provided in the embodiment of the present application includes at least two sub-display panels 10 spliced together. When splicing the sub-display panels 10 , there is a splicing area 101 between adjacent sub-display panels 10 , and the splicing area 101 includes a splicing seam.

Specifically, multiple sub-display panels 10 can be spliced together in a single-row, double-row or multi-row manner. For example, the sub-display panels 10 have the same shape, and the sub-display panels 10 have the same size. At this time, a plurality of sub-display panels 10 may be spliced together in an array arrangement. For example, referring to FIG. 1 , in the embodiment of the present application, the display panel includes two sub-display panels 10 , and the sub-display panels 10 are arranged and spliced in a manner of one row and two columns. It should be pointed out that, in order to clearly illustrate the technical solution of the display panel of the present application, only two sub-display panels 10 are schematically shown in the drawings. Of course, the present application is not limited thereto. In other embodiments, the sub-display panels The number of 10 can be set according to actual needs. It should also be pointed out that the present application does not limit the splicing manner of the sub-display panels 10 . For example, in other embodiments, two or more sub-display panels 10 can be disposed on the same side of another sub-display panel 10 at the same time.

In the embodiment of the present application, the first light-emitting device 110 can be provided in the splicing area 101 between adjacent sub-display panels 10, and the first light-emitting device 110 can be used to display in the splicing area 101, so as to avoid adjacent sub-display panels The seams between the display panels 10 affect the display effect of the display panels.

In the embodiment of the present application, each sub-display panel 10 is provided with a thin film transistor 120, and the first light-emitting device 110 provided in the stitching area 101 can be connected with the thin-film transistor 120 provided in the sub-display panel 10, so as to utilize the thin-film transistor 120 provided in the sub-display panel 10 The thin film transistor 120 of the display panel 10 provides a driving signal for the first light emitting device 110, that is to say, in this application, it is not necessary to arrange the thin film transistor 120 in the stitching area 101, but only need to use the thin film transistor 120 arranged in the sub-display panel 10 as the first light emitting device 110. The light emitting device 110 provides a driving signal, avoids setting a complicated driving structure at the splicing seam, and reduces the cost of the display panel.

In the embodiment of the present application, when setting the thin film transistor that provides the driving signal for the first light emitting device 110, there may be the following two possible implementations:

In the first implementation mode, as shown in FIG. 1 , the sub-display panel 10 is provided with a second light-emitting device 130 close to the splicing area 101, the sub-display panel 10 is provided with a first thin film transistor 121 close to the splicing area 101, and the first thin film transistor 121 can be connected to the second light emitting device 130 to provide a driving signal for the second light emitting device 130, and the first thin film transistor 121 can also be connected to the first light emitting device 110 arranged in the stitching area 101, and the first thin film transistor 121 can be used as The first light emitting device 110 provides a driving signal, that is to say, the first light emitting device 110 and the second light emitting device 130 are simultaneously provided with a driving signal by using the first thin film transistor 121 close to the splicing area 101, which can avoid the A relatively complex driving structure is set to further reduce the manufacturing cost of the display panel.

For the second implementation manner, refer to FIG. 3 or FIG. 4 . FIG. 3 is a schematic top view structural diagram of another display panel provided by an embodiment of the present application. FIG. 4 is a schematic cross-sectional structure diagram along the AA direction shown in FIG. 3 of the embodiment of the present application. The sub-display panel 10 is provided with a redundant thin film transistor 122 close to the splicing area 101. The redundant thin film transistor 122 is used as a spare thin film transistor of the sub-display panel 10, and is not connected to the second light-emitting device 130 arranged on the sub-display panel 10. At this time, it can The first light emitting device 110 is connected to the redundant thin film transistor 122 , so that the redundant thin film transistor 122 is used to provide a driving signal for the first light emitting device 110 . In this way, there is also no need to arrange a relatively complicated driving structure in the splicing area 101, which further reduces the manufacturing cost of the display panel, and can realize the independent driving and display of the first light-emitting device 110 in the splicing area 101, enriching the display effect of the display panel.

In the embodiment of the present application, a light-tight bonding structure 20 is provided at the splicing seam between adjacent sub-display panels 10. Referring to FIG. 2 or FIG. 4, the bonding structure 20 includes The adhesive layer 21 and the first substrate 22 are sequentially stacked in the light emitting direction of the first light emitting device 110 , and the first light emitting device 110 is disposed on a side of the first substrate 22 away from the adhesive layer 21 . Both the adhesive layer 21 and the first substrate 22 can be opaque materials, so that the light-impermeable adhesive layer 21 and the first substrate 22 can be used to eliminate the reflection and refraction of light by the splicing seam, and reduce the display of the splicing seam on the display panel. The impact of the effect. The glue layer 21 can specifically be black filling glue, and the first substrate 22 can include (for example, be made of) an insulating material, and the insulating material can be opaque glass, quartz or polymer resin.

In the embodiment of the present application, the sub-display panel 10 includes a second substrate 11 , a driving circuit layer 12 and an organic layer 13 stacked in sequence, as shown in FIG. 2 or FIG. 4 . The sub display panel 10 may include a second substrate 11 . The second substrate 11 may include (eg, may be made of) an insulating material, which may be glass, quartz, or polymer resin. As one example, the second substrate 11 may include polyimide. The first substrate 22 and the second substrate 11 can be adjacent, and the thickness of the first substrate 22 can be greater than that of the second substrate 11, so that the first light-emitting device 110 and the second light-emitting device 130 can be arranged on the same horizontal plane to improve the display of the display panel. Effect.

The driving circuit layer 12 includes a plurality of thin film transistors 120, and the thin film transistors 120 are arranged on one side of the second substrate 11. Each thin film transistor 120 includes an active layer, a gate insulating layer, a first metal layer, an interlayer insulating layer and a second Two metal layers. The active layer is located on the second substrate 11 , and the active layer may include polysilicon, single crystal silicon, low temperature polysilicon, amorphous silicon or oxide semiconductor. When the active layer includes (eg, is made of) polysilicon, the ion-doped active layer may have conductivity. A gate insulating layer may be formed on the active layer. The gate insulating layer may include (eg, may be made of) an inorganic layer such as, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. A first metal layer may be formed on the gate insulating layer. The first metal layer may include molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu) and alloys thereof Single or multiple layers of any one or more of (eg, made of) any one or more of them. An interlayer insulating layer may be formed on the first metal layer. The interlayer insulating layer may include (eg, may be made of) an inorganic layer such as, for example, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The insulating interlayer may include a plurality of inorganic layers. The second metal layer may be formed on the interlayer insulating layer, and the second metal layer may include molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), Single or multiple layers of any one or more of (for example, made of) neodymium (Nd), copper (Cu) and alloys thereof.

The organic layer 13 may be formed on the second metal layer to flatten the steps due to the second metal layer, and the organic layer 13 may be made of an organic material such as acrylic resin, epoxy resin, phenolic resin, poly Amide resin or polyimide resin.

The second light emitting device 130 can be disposed on the organic layer 130, the second light emitting device 130 is disposed on the side of the thin film transistor 120 away from the second substrate 11, and correspondingly, the first light emitting device 110 is also disposed on the side of the thin film transistor 120 away from the second substrate 11 side. The second light emitting device 130 can be electrically connected to the thin film transistor 120 through a metal contact penetrating through the organic layer 130 .

In an embodiment of the present application, the first light emitting device 110 may include a micro light emitting diode (Micro-LED), such as an inorganic micro light emitting diode. Referring to FIG. 5 , it is a schematic structural diagram of a first light emitting device provided by an embodiment of the present application. The first light-emitting device shown in FIG. 5 can be a miniature light-emitting diode, which includes a light-emitting structure and a contact electrode, wherein the contact electrode includes a first electrode 111 and a second electrode 112, and the first electrode 111 and the second electrode 112 Used for electrical extraction of micro-LEDs. Specifically, one of the first electrode 111 and the second electrode 112 is a cathode, and the other is an anode. For example, the first electrode 111 is a cathode, and the second electrode 112 is an anode. For another example, the first electrode 111 is an anode. The second electrode 112 is a cathode. The first electrode 111 and the second electrode 112 can be disposed on the same side of the light emitting structure to form a horizontal miniature light emitting diode. The light-emitting structure includes an N-type semiconductor layer 113, an active layer 114, and a P-type semiconductor layer 115 that are stacked in sequence. The active layer 114 can be a quantum well layer, and the first electrode 111 is electrically connected to the N-type semiconductor layer 113. The second electrode 112 is electrically connected to the P-type semiconductor layer 115. The micro light emitting diode may further include an insulating layer 116, the insulating layer 116 includes a part surrounding the sidewall of the light emitting structure and a part located on the side of the light emitting structure connected to the contact electrode, the insulating layer 116 exposes the light emitting structure for being connected to the contact electrode part. Specifically, the material of the N-type semiconductor layer 113 can be N-type doped gallium nitride, the material of the P-type semiconductor layer 115 can be P-type doped gallium nitride, and the material of the active layer 113 can be InGaN The material of the first electrode 111 and the second electrode 112 may be a material with good conductivity, such as a metal material. The size of the micro light emitting diodes can be less than 200 microns, further, less than 100 microns, or less than 50 microns, and further, the size range of the micro light emitting diodes can be 1-10 microns.

In the embodiment of the present application, the second light emitting device 130 may also include a micro light emitting diode including a light emitting structure and a contact electrode, wherein the contact electrode includes a third electrode 131 and a fourth electrode 132 . The third electrode 131 and the fourth electrode 132 can be disposed on the same side of the light emitting structure to form a horizontal miniature light emitting diode.

In the embodiment of the present application, the sub-display panel 10 is provided with a first bonding pad 141 and a second bonding pad 142, specifically, the first bonding pad 141 and the second bonding pad 142 may be provided on one side surface of the organic layer 13 , the thin film transistor 120 may be electrically connected to the first pad 141 or the second pad 142, and the first pad 141 and the second pad 142 may be respectively electrically connected to one of the two electrodes of the first light emitting device 110, It is implemented that the thin film transistor 120 is used to provide a driving signal for the first light emitting device 110 .

As an example, as shown in FIG. 2, the first thin film transistor 121 is electrically connected to the first pad 141 or the second pad 142, and the first pad 141 is electrically connected to the first electrode 111 of the first light emitting device 110. The second pad 142 is electrically connected to the second electrode 112 of the first light emitting device 110 , as shown in FIG. 1 .

As another example, as shown in FIG. 4, the redundant thin film transistor 122 is electrically connected to the first pad 141 or the second pad 142, and the first pad 141 is electrically connected to the first electrode 111 of the first light emitting device 110. , the second pad 142 is electrically connected to the second electrode 112 of the first light emitting device 110 , as shown in FIG. 3 .

In the embodiment of the present application, the arrangement direction of the first pad 141 and the second pad 142 may be set at a fixed angle to the arrangement direction of the two electrodes of the first light emitting device 110, specifically, the first pad 141 and the The included angle between the arrangement direction of the second pads 142 and the arrangement direction of the two electrodes of the first light emitting device 110 ranges from 0° to 90°.

As an example, as shown in FIG. 3 , the arrangement direction of the first pad 141 and the second pad 142 may be parallel to the arrangement direction of the two electrodes of the first light emitting device 110 , and the first pad 141 and the second pad The disks 142 can be arranged vertically, and at this time, the first electrodes 111 and the second electrodes 112 of the first light emitting device 110 are also arranged vertically, so that the arrangement directions are arranged in parallel, so that the first pads 141 and the first electrodes 111 or the second electrodes 111 can be arranged in parallel. The electrical connection between the pad 142 and the second electrode 112 is simpler, the wiring is shorter, and the requirements for the manufacturing process of the display panel are lower.

As another example, referring to FIG. 1, the arrangement direction of the first pad 141 and the second pad 142 may be perpendicular to the arrangement direction of the two electrodes of the first light emitting device 110, and the first pad 141 and the second The pads 142 can be arranged vertically, and at this time, the first electrodes 111 and the second electrodes 112 of the first light emitting device 110 can be arranged horizontally, so that the vertical arrangement direction can enrich the display effect of the first light emitting device 110 in the splicing area 101 .

In the embodiment of the present application, the arrangement direction between the two electrodes of the second light emitting device 130 may be parallel to the arrangement direction between the two electrodes of the first light emitting device 110, as shown in FIG. 1 or FIG. 3 , so Arranged in parallel, the electrodes of the first light emitting device 110 and the second light emitting device 130 can be arranged in the same direction, so that the light emitting display effect of the splicing area 101 is the same as that of the sub-display panel 10, and the display uniformity of the splicing area 101 and the sub-display panel 10 is improved, and the The display effect of the display panel.

In the embodiment of the present application, the arrangement direction between the two electrodes of the second light-emitting device 130 may be perpendicular to the arrangement direction between the two electrodes of the first light-emitting device 110, as shown in FIG. The display effect of the first light emitting device 110 in the splicing area 101 can be enriched.

In the embodiment of the present application, one column of first light emitting devices 110 or multiple columns of first light emitting devices 110 may be arranged in the splicing area 101 according to the width of the splicing area 101 and the size of the first light emitting devices 110 . The splice region 101 may have a width of 100 microns to 450 microns.

Specifically, the central wavelength of light emitted by the second light emitting device 120 may be λ1, and the central wavelength of light emitted by the first light emitting device 110 may be λ2, where λ1≥λ2, that is to say, the first light emitting device 110 disposed in the stitching region 101 The central wavelength of the outgoing light is smaller than the central wavelength of the outgoing light of the second light-emitting device 120, because the lower the central wavelength of the outgoing light, the higher the luminous efficiency, so that the first light-emitting device 110 with higher luminous efficiency is arranged in the splicing area 101 , that is, the green or blue first light-emitting device can be arranged in the splicing area, so as to improve the luminous efficiency of the splicing area and further improve the display effect of the display panel.

As an example, if only one row of first light-emitting devices 110 is provided in the splicing area 101, all light emitted by the first light-emitting devices 110 may be blue light, because the first light-emitting devices 110 of blue light have the highest luminous efficiency.

As another example, if only two rows of first light-emitting devices 110 are provided in the splicing area 101, the light emitted by one row of first light-emitting devices 110 may be all blue light, and the light emitted by the other row of first light-emitting devices 110 may be all green light. , this is because the luminous efficiency of the first light-emitting device 110 for blue light is the highest, and the luminous efficiency of the first light-emitting device 110 for green light is second only to blue light and higher than that of red light. Such setting can not only utilize the first light emitting device 110 with higher luminous efficiency, but also enrich the display effect of the splicing area 101 .

In practical applications, multiple colors of outgoing light can also be set in the splicing area 101 at the same time, so as to further enrich the display effect of the splicing area 101 .

In the embodiment of the present application, both the first light emitting device 110 and the second light emitting device 130 may be horizontal miniature light emitting diodes, and the second light emitting device 130 is arranged flip-chip in the sub-display panel 10, that is, the second light emitting device 130 The third electrode 131 and the fourth electrode 132 are located on the same side of the light emitting structure close to the second substrate 11 . The first light-emitting device 110 arranged in the splicing area 101 can be installed upside down or upside down, which will be described in detail below:

In the first possible implementation mode, the first light-emitting device 110 is set up as a front mount, that is, the first electrode 111 and the second electrode 112 of the first light-emitting device 110 are located on the same side of the light-emitting structure away from the second substrate 11, referring to FIG. 2 or FIG. 4. At this time, the bonding wire 14 may be used to electrically connect the first pad 141 to the first electrode 111 and to electrically connect the second pad 142 to the second electrode 112 .

In the embodiment of the present application, when the first light-emitting device 110 is set as a formal installation, the size of the first light-emitting device 110 of the same color can be set to be larger than the size of the second light-emitting device 130 of the same color, as shown in FIG. 8 , This is because the light-emitting efficiency of the first light-emitting device 110 of the same size is lower than that of the first light-emitting device 110 when it is installed upside down. The size of the device 130 can improve the light output capability of the splicing area 101, so that the display effect of the splicing area 101 and the sub-display panel 10 is more uniform, and further weaken or offset the interference of ambient light at the splicing seam.

In the second possible implementation mode, the first light-emitting device 110 is configured as a flip chip, that is, the first electrode 111 and the second electrode 112 of the first light-emitting device 110 are located on the same side of the light-emitting structure close to the second substrate 11, referring to FIG. 6 and As shown in FIG. 7 , FIG. 6 is a schematic top view structural diagram of another display panel provided by the embodiment of the present application, and FIG. 7 is a schematic cross-sectional structural schematic view of the embodiment of the present application along the AA direction shown in FIG. 6 . At this time, the first bonding layer 151 and the second bonding layer 152 can be arranged on the surface of the first substrate 22, the first electrode 111 and the first bonding layer 151 are electrically connected, and the second electrode 112 and the second bonding layer 152 electrical connection. The first bonding layer 151 and the first electrode 111 and the second pad 142 and the second bonding layer 152 may be electrically connected by using the bonding wire 14 or the printed metal wire 16 .

In the embodiment of the present application, when the first light-emitting device 110 is arranged upside down, the size of the first light-emitting device 110 and the second light-emitting device 130 can be the same, so as to achieve the same light output effect of the splicing area 101 and the sub-display panel 10, so that The display effect of the stitching area 101 and the sub-display panel 10 is relatively uniform.

In the embodiment of the present application, when more than one column of first light-emitting devices 110 is provided in the splicing area 101, one column of the first light-emitting devices 110 can be installed as a front-mounted device, and the other column of the first light-emitting devices 110 can be installed as a flip-chip device. The first light emitting device 110 balances the luminous efficiencies of different colors at the splicing region 101 while the setting effect of the splicing region 101 is achieved.

As an example, the first light-emitting device 110 may include a first sub-light-emitting device 1101 and a second sub-light-emitting device 1102, the center wavelength of the light emitted by the first sub-light-emitting device 1101 is μ1, and the center wavelength of the light emitted by the second sub-light-emitting device 1102 is μ1. The wavelength is μ2, μ1<μ2, the first sub-light-emitting device 1101 can be set up as a front mount, that is, the first electrode 111 and the second electrode 112 of the first sub-light-emitting device 1101 are located on the same side of the light-emitting structure away from the second substrate 11, and the second The sub-light-emitting device 1102 can be arranged in a flip-chip configuration, that is, the first electrode 111 and the second electrode 112 of the second sub-light-emitting device 1102 are located on the same side of the light-emitting structure close to the second substrate 11 , as shown in FIG. 8 .

Specifically, the light emitted by the first sub-light-emitting device 1101 is blue light, and the light emitted by the second sub-light-emitting device 1102 is red light. Because the luminous efficiency of the second sub-light-emitting device 1102 for red light is lower than that of the first sub-light-emitting device 1101 for blue light, Because the light-emitting devices of the same size have lower light extraction efficiency when they are installed in a front-mounted configuration than when they are installed in an upside-down configuration, the second sub-light-emitting device 1102 for red light is configured as an upside-down chip structure, and the first sub-light-emitting device 1101 for blue light is configured as a front-mounted device. In this way, the difference in luminous efficiency between the second sub-light-emitting device 1102 for red light and the first sub-light-emitting device 1101 for blue light is reduced by adjusting the structural settings of light-emitting devices of different colors in the patchwork area, and the light-emitting effect of the patchwork area is improved. .

As another example, the first light-emitting device 110 may include a first light-emitting sub-device, a second light-emitting sub-device, and a third light-emitting sub-device. The central wavelength of the emitted light is μ2, the central wavelength of the emitted light of the third sub-light-emitting device is μ3, μ1<μ2<μ3, the first sub-light-emitting device and the second sub-light-emitting device can be installed in front, and the third sub-light-emitting device can be inverted install settings.

Specifically, the first sub-light-emitting device emits blue light, the second sub-light-emitting device emits green light, and the third sub-light-emitting device emits red light, because the luminous efficiency of the third sub-light-emitting device for red light is lower than that of green light. The second sub-light-emitting device for light and the first sub-light-emitting device for blue light, and because the light-emitting devices of the same size, the light-emitting efficiency of the front-mounted arrangement is lower than that of the inverted arrangement, the third sub-light-emitting device of the red light is arranged For the flip-chip structure, the first sub-light-emitting device for blue light and the second sub-light-emitting device for green light are set as a front-mounted structure, so as to reduce the third sub-light emission of red light by adjusting the structural settings of light-emitting devices of different colors in the seam area The difference in luminous efficiency between the device, the second sub-light-emitting device for green light, and the first sub-light-emitting device for blue light improves the light output effect of the seam area.

To sum up, the embodiment of the present application provides a display panel, including: at least two sub-display panels, there is a splicing area between adjacent sub-display panels, the splicing area includes a splicing seam, and the splicing area is provided with a first light-emitting device, the sub-display panel is provided with a thin film transistor, the first light emitting device is connected to the thin film transistor, and the thin film transistor provides a driving signal for the first light emitting device. That is to say, by arranging the first light-emitting device in the splicing area of adjacent sub-display panels, and using the thin-film transistor disposed on the sub-display panel to provide a driving signal for the first light-emitting device, there is no need to additionally arrange a thin-film transistor in the splicing area to realize It can not only display in the splicing seam area, improve the display effect, but also avoid setting a complicated driving structure at the splicing seam, reduce the cost of the display panel, and improve user experience.

An embodiment of the present application further provides a display device, including the display panel described in the above embodiments.

Referring to FIG. 9 , it is a schematic plan view of a display device provided by an embodiment of the present application. It can be seen from the figure that the display device 1000 includes a display panel 100 , which is the display panel 100 described in any of the above embodiments, and the display panel 100 is formed by splicing at least two sub-display panels 10 . The display device 1000 provided in the embodiment of the present application may be a mobile phone, a computer, a television, a vehicle-mounted display device and other display devices with a display function, which is not specifically limited in the embodiment of the present application. The display device 1000 provided in the embodiment of the present application has the beneficial effects of the display panel 100 provided in the embodiment of the present application. For details, reference may be made to the specific description of the display panel in the above embodiments, and details will not be repeated here in the embodiment of the present application.

The above descriptions are only the preferred embodiments of the present application. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any person familiar with the art, without departing from the scope of the technical solution of the application, can use the methods and technical content disclosed above to make many possible changes and modifications to the technical solution of the application, or to modify the equivalent of equivalent changes Example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application that do not deviate from the content of the technical solution of the present application still fall within the protection scope of the technical solution of the present application.

Claims (11)

1. A display panel, characterized in that, comprising: There are at least two sub-display panels, and there is a splicing area between adjacent sub-display panels, and the splicing area includes a splicing seam; The splicing area is provided with a first light emitting device; The sub-display panel is provided with a thin film transistor, the first light emitting device is connected to the thin film transistor, and the thin film transistor provides a driving signal for the first light emitting device. 2. The display panel according to claim 1, wherein the thin film transistor comprises a first thin film transistor disposed close to the splicing area, and the sub-display panel is provided with a second light emitting transistor close to the splicing area. device, both the first light emitting device and the second light emitting device are connected to the first thin film transistor. 3 . The display panel according to claim 1 , wherein the thin film transistor comprises a redundant thin film transistor disposed close to the stitching area, and the first light emitting device is connected to the redundant thin film transistor. 4 . 4. The display panel according to claim 1, wherein the sub-display panel is provided with a first bonding pad and a second bonding pad, and the thin film transistor is connected to the first bonding pad or the second bonding pad. The pads are electrically connected, and the first pad and the second pad are respectively electrically connected to one of the two electrodes of the first light emitting device; The arrangement direction of the first bonding pad and the second bonding pad is parallel to the arrangement direction of the two electrodes of the first light emitting device. 5. The display panel according to claim 1, wherein the sub-display panel is provided with a second light-emitting device close to the splicing area, and the arrangement direction between the two electrodes of the second light-emitting device and The arrangement directions between the two electrodes of the first light emitting device are parallel. 6. The display panel according to claim 1, wherein the sub-display panel is provided with a second light-emitting device close to the splicing area, the central wavelength of light emitted by the second light-emitting device is λ1, and the The central wavelength of the light emitted by the first light emitting device is λ2, and λ1≥λ2. 7. The display panel according to claim 1, wherein the splicing seam is provided with a light-tight bonding structure, and the bonding structure includes sequentially stacked light-emitting devices along the light-emitting direction of the first light-emitting device. An adhesive layer and a first substrate, the first light-emitting device is disposed on a side of the first substrate away from the adhesive layer. 8. The display panel according to claim 1, wherein the sub-display panel comprises a second substrate, and the thin film transistor is disposed on one side of the second substrate; The first light-emitting device includes a light-emitting structure and a first electrode and a second electrode respectively electrically connected to the light-emitting structure, and the first light-emitting device is disposed on a side of the thin film transistor away from the second substrate, so The first electrode and the second electrode are located on the same side of the light emitting structure away from the second substrate; The sub-display panel is provided with a second light-emitting device close to the splicing area, the second light-emitting device is provided on a side of the thin film transistor away from the second substrate, the second light-emitting device includes a light-emitting structure and A third electrode and a fourth electrode respectively electrically connected to the light emitting structure, the third electrode and the fourth electrode are located on the same side of the light emitting structure close to the second substrate. 9. The display panel according to claim 8, wherein the size of the first light emitting devices of the same color is larger than the size of the second light emitting devices of the same color. 10. The display panel according to claim 8, wherein the first light-emitting device comprises a first sub-light-emitting device and a second sub-light-emitting device, the center wavelength of light emitted by the first sub-light-emitting device is μ1, The central wavelength of the light emitted by the second sub-light-emitting device is μ2, μ1<μ2; The first electrode and the second electrode of the first light-emitting sub-device are located on the same side of the light-emitting structure away from the second substrate, and the first electrode and the second electrode of the second light-emitting sub-device are located on the same side of the light-emitting structure near the same side of the second substrate. 11. A display device, comprising the display panel according to any one of claims 1-10.

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