DISPLAY PANEL AND MOBILE TERMINAL

The present disclosure provides a display panel and a mobile terminal. The display panel includes a base substrate, a pad assembly, a pin assembly, and a limit assembly. An end of the limit assembly is fixedly connected with the pad assembly, another end of the limit assembly extends towards a side close to the pin assembly along a direction perpendicular to the base substrate, and a thickness of the limit assembly is greater than a distance between the pin assembly and the pad assembly. A side surface of the limit assembly is abutted against the pin assembly to prevent the pin assembly from moving.

FIELD OF INVENTION

The present disclosure relates to a field of display, and particularly relates to a display panel and a mobile terminal.

BACKGROUND OF INVENTION

Light-emitting diode (LED) is a new generation of display technology with self-luminous display characteristics and advantages of higher brightness, better luminous efficiency, and lower power consumption. Since LED display panels have self-luminous characteristics and no additional light sources are used, therefore, LED display panels may be manufactured thinner and lighter than display devices using separate light sources, and characteristics of flexible and foldable display are relatively easy to realize.

Generally, a LED chip in the LED display panel is needed to be solidly soldered onto pads on a surface of a substrate. During a process of soldering the LED chip and the pads, due to an influence of high temperature in a production line of surface assembly technology, the LED chip will have a certain fluidity, resulting in a displacement of a contact surface between pins of the LED chip and the pads, thereby resulting in a contact area being misplaced, causing poor soldering to occur, and affecting conductivity yield.

Therefore, a display panel and a mobile terminal are urgently needed to solve above-mentioned technical problems.

Technical Problems

The present disclosure provides a flexible display panel and a mobile terminal to improve a technical problem that a contact surface between pins of a LED chip and pads in an existing display panel is prone to displacement, resulting in poor soldering.

Technical Solutions

The present disclosure provides a display panel, the display panel includes a base substrate, a pad assembly arranged on the base substrate, and a light-emitting diode chip, both ends of the light-emitting diode chip are fixedly connected with a pin assembly, the pin assembly is soldered to the pad assembly;wherein the display panel further includes a limit assembly arranged on the pad assembly, an end of the limit assembly is fixedly connected with the pad assembly, another end of the limit assembly extends towards a side close to the pin assembly along a direction perpendicular to the base substrate, and a thickness of the limit assembly is greater than a distance between the pin assembly and the pad assembly; a side surface of the limit assembly is abutted against the pin assembly to prevent the pin assembly from moving along a first direction and a second direction, the first direction intersects with the second direction, and both the first direction and the second direction are parallel to a surface of the base substrate in contact with the pad assembly.

In the display panel provided by an embodiment of the present disclosure, the pad assembly includes a first pad and a second pad insulated from each other, the pin assembly includes a first pin located at an end of the light-emitting diode chip, and a second pin located at another end of the light-emitting diode chip, the first pin is soldered to the first pad, and the second pin is soldered to the second pad;wherein the limit assembly includes a first limited member arranged on the first pad, and a second limited member arranged on the second pad, the first limited member is fixedly connected with the first pin, and the second limited member is fixedly connected with the second pin.

In the display panel provided by an embodiment of the present disclosure, the first pin is defined with at least one first through hole, the second pin is defined with at least one second through hole; andwherein the first limited member includes at least one first limited sub-member, an end of the first limited sub-member corresponds to the first through hole and is arranged in the first through hole; the second limited member includes at least one second limited sub-member, an end of the second limited sub-member corresponds to the second through hole and is arranged in the second through hole.

In the display panel provided by an embodiment of the present disclosure, in a direction of a plan view of the display panel, an orthographic projection of the first limited sub-member on the first pad and an orthographic projection of the light-emitting diode chip on the first pad are misaligned; an orthographic projection of the second limited sub-member on the second pad and an orthographic projection of the light-emitting diode chip on the second pad are misaligned.

In the display panel provided by an embodiment of the present disclosure, the display panel further includes a solder paste layer, the solder paste layer includes a first solder paste layer located between the first pin and the first pad, and a second solder paste layer located between the second pin and the second pad;wherein the first limited member penetrates through the first solder paste layer and is in contact with the first pad, and the second limited member penetrates through the second solder paste layer and is in contact with the second pad.

In the display panel provided by an embodiment of the present disclosure, a sum of a thickness of the first solder paste layer and a thickness of the first pin is less than or equal to a thickness of the first limited member; a sum of a thickness of the second solder paste layer and a thickness of the second pin is less than or equal to a thickness of the second limited member.

In the display panel provided by an embodiment of the present disclosure, an area of the first through hole is 10% to 30% of an area corresponding to the first pin; and an area of the second through hole is 10% to 30% of an area corresponding to the second through hole.

In the display panel provided by an embodiment of the present disclosure, the first limited member includes a plurality of third limited sub-members, the plurality of the third limited sub-members are arranged around the first pin, the second limited member includes a plurality of fourth limited sub-members, and the plurality of the fourth limited sub-members are arranged around the second pin.

In the display panel provided by an embodiment of the present disclosure, an orthographic projection of the first pad on the light-emitting diode chip or an orthographic projection of the second pad on the light-emitting diode chip is located in the light-emitting diode chip.

In the display panel provided by an embodiment of the present disclosure, the light-emitting diode chip is any one of a mini light-emitting diode chip and a micro light-emitting diode chip.

The present disclosure provides a mobile terminal, including a terminal body and a display panel, the terminal body is integrated with the display panel, and the display panel includes a base substrate, a pad assembly arranged on the base substrate, and a light-emitting diode chip, both ends of the light-emitting diode chip are fixedly connected with a pin assembly, the pin assembly is soldered to the pad assembly;wherein the display panel further includes a limit assembly arranged on the pad assembly, an end of the limit assembly is fixedly connected with the pad assembly, another end of the limit assembly extends towards a side close to the pin assembly along a direction perpendicular to the base substrate, and a thickness of the limit assembly is greater than a distance between the pin assembly and the pad assembly; a side surface of the limit assembly is abutted against the pin assembly to prevent the pin assembly from moving along a first direction and a second direction, the first direction intersects with the second direction, and both the first direction and the second direction are parallel to a surface of the base substrate in contact with the pad assembly.

In the mobile terminal provided by an embodiment of the present disclosure, the pad assembly includes a first pad and a second pad insulated from each other, the pin assembly includes a first pin located at an end of the light-emitting diode chip, and a second pin located at another end of the light-emitting diode chip, the first pin is soldered to the first pad, and the second pin is soldered to the second pad;wherein the limit assembly includes a first limited member arranged on the first pad, and a second limited member arranged on the second pad, the first limited member is fixedly connected with the first pin, and the second limited member is fixedly connected with the second pin.

In the mobile terminal provided by an embodiment of the present disclosure, the first pin is defined with at least one first through hole, the second pin is defined with at least one second through hole; andwherein the first limited member includes at least one first limited sub-member, an end of the first limited sub-member corresponds to the first through hole and is arranged in the first through hole; the second limited member includes at least one second limited sub-member, an end of the second limited sub-member corresponds to the second through hole and is arranged in the second through hole.

In the mobile terminal provided by an embodiment of the present disclosure, in a direction of a plan view of the display panel, an orthographic projection of the first limited sub-member on the first pad and an orthographic projection of the light-emitting diode chip on the first pad are misaligned; an orthographic projection of the second limited sub-member on the second pad and an orthographic projection of the light-emitting diode chip on the second pad are misaligned.

In the mobile terminal provided by an embodiment of the present disclosure, the display panel further includes a solder paste layer, the solder paste layer includes a first solder paste layer located between the first pin and the first pad, and a second solder paste layer located between the second pin and the second pad;wherein the first limited member penetrates through the first solder paste layer and is in contact with the first pad, and the second limited member penetrates through the second solder paste layer and is in contact with the second pad.

In the mobile terminal provided by an embodiment of the present disclosure, a sum of a thickness of the first solder paste layer and a thickness of the first pin is less than or equal to a thickness of the first limited member; a sum of a thickness of the second solder paste layer and a thickness of the second pin is less than or equal to a thickness of the second limited member.

In the mobile terminal provided by an embodiment of the present disclosure, an area of the first through hole is 10% to 30% of an area corresponding to the first pin; and an area of the second through hole is 10% to 30% of an area corresponding to the second through hole.

In the mobile terminal provided by an embodiment of the present disclosure, the first limited member includes a plurality of third limited sub-members, the plurality of the third limited sub-members are arranged around the first pin, the second limited member includes a plurality of fourth limited sub-members, and the plurality of the fourth limited sub-members are arranged around the second pin.

In the mobile terminal provided by an embodiment of the present disclosure, an orthographic projection of the first pad on the light-emitting diode chip or an orthographic projection of the second pad on the light-emitting diode chip is located in the light-emitting diode chip.

In the mobile terminal provided by an embodiment of the present disclosure, the light-emitting diode chip is any one of a mini light-emitting diode chip and a micro light-emitting diode chip.

Beneficial Effects

A display panel provided by the present disclosure is provided with a limit assembly arranged on a pad assembly, and an end of the limit assembly is fixedly connected with the pad assembly, another end of the limit assembly extends towards a side close to a pin assembly along a direction perpendicular to a base substrate, and a thickness of the limit assembly is greater than a distance between the pin assembly and the pad assembly. A side surface of the limit assembly is abutted against the pin assembly to prevent the pin assembly from moving, thereby preventing a phenomenon of a displacement of a contact surface between the pin assembly of a light-emitting diode chip and the pad assembly caused by a high temperature generated by manufacturing a solder paste layer during a process of soldering to the pad assembly, improving a soldering precision between the pin assembly and the pad assembly, and ensuring stability of die bonding and uniformity of arrangement of the light-emitting diode chip.

DETAILED DESCRIPTION OF EMBODIMENTS

Purposes and technical solutions of the present disclosure and the effects thereof will be described in detail in the following with reference to exemplary embodiments and the corresponding accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present disclosure, and the present disclosure is not limited thereto.

Due to an influence of high temperature in a production line of surface mount technology during a process of soldering a micro light-emitting diode (micro-LED) chip and pads, the micro-LED chip will have a certain fluidity, resulting in a displacement of a contact surface between pins of the micro-LED chip and the pads, thereby resulting in the contact surface being misaligned, causing poor soldering to occur, and affecting conductivity yield. The present disclosure provides following technical solutions to solve above technical problems.

Referring toFIG.1toFIG.3, the present disclosure provides a display panel100, the display panel100includes a base substrate10, a pad assembly20arranged on the base substrate10, and a light-emitting diode chip50. Both ends of the light-emitting diode chip50are fixedly connected with a pin assembly40, the pin assembly40is soldered to the pad assembly20.

Wherein the display panel100further includes a limit assembly60, an end of the limit assembly60is fixedly connected with the pad assembly20, another end of the limit assembly60extends towards a side close to the pin assembly40along a direction perpendicular to the base substrate10, and a thickness of the limit assembly60is greater than a distance between the pin assembly40and the pad assembly20. A side surface of the limit assembly60is abutted against the pin assembly40to prevent the pin assembly40from moving along a first direction D1 and a second direction D2. The first direction D1 intersects with the second direction D2, and both the first direction D1 and the second direction D2 are parallel to a surface of the base substrate10in contact with the pad assembly20.

The display panel100provided by the present disclosure is provided with the limit assembly60arranged on the pad assembly20, and the end of the limit assembly60is fixedly connected with the pad assembly20, the another end of the limit assembly60extends towards the side close to the pin assembly40along the direction perpendicular to the base substrate10, and the thickness of the limit assembly60is greater than the distance between the pin assembly40and the pad assembly20. The side surface of the limit assembly60is abutted against the pin assembly40to prevent the pin assembly40from moving, thereby preventing a phenomenon of a displacement of a contact surface between the pin assembly40of the light-emitting diode chip50and the pad assembly20caused by a high temperature generated by manufacturing a solder paste layer30during a process of soldering to the pad assembly20, improving a soldering precision between the pin assembly40and the pad assembly20, and ensuring stability of die bonding and uniformity of arrangement of the light-emitting diode chip50.

The technical solutions of the present disclosure will now be described with reference to specific embodiments.

FIG.1is a front view of a first display panel provided by an embodiment of the present disclosure.FIG.2is a cross-sectional view of the display panel100at A-A inFIG.1. Wherein the display panel100includes a base substrate10, a pad assembly20arranged on the base substrate10, and a light-emitting diode chip50. Both ends of the light-emitting diode chip50are fixedly connected with a pin assembly40, the pin assembly40is soldered to the pad assembly20.

Wherein the display panel100further includes a limit assembly60, an end of the limit assembly60is fixedly connected with the pad assembly20, another end of the limit assembly60extends towards a side close to the pin assembly40along a direction perpendicular to the base substrate10, and a thickness of the limit assembly60is greater than a distance between the pin assembly40and the pad assembly20.

In the embodiment of the present disclosure, the another end of the limit assembly60is fixedly connected with the pin assembly40, that is, a side surface of the limit assembly60is abutted against the pin assembly40to prevent the pin assembly40from moving along a first direction D1 and a second direction D2. The first direction D1 intersects with the second direction D2, and both the first direction D1 and the second direction D2 are parallel to a surface of the base substrate10in contact with the pad assembly20.

Referring toFIG.1andFIG.2, in the embodiment of the present disclosure, the pad assembly20includes a first pad21and a second pad22insulated from each other. The pin assembly40includes a first pin41located at an end of the light-emitting diode chip50and a second pin42located at another end of the light-emitting diode chip50. The first pin41is soldered to the first pad21, and the second pin42is soldered to the second pad22.

Wherein the limit assembly60includes a first limited member61arranged on the first pad21and a second limited member62arranged on the second pad22. The first limited member61is fixedly connected with the first pin41, and the second limited member62is fixedly connected with the second pin42.

In the embodiment of the present disclosure, the display panel100further includes a solder paste layer30, the solder paste layer30includes a first solder paste layer31located between the first pin41and the first pad21, and a second solder paste layer32located between the second pin42and the second pad22.

Wherein the first limited member61penetrates through the first solder paste layer31and is in contact with the first pad21, and the second limited member62penetrates through the second solder paste layer32and is in contact with the second pad22.

Specifically, the first solder paste layer31is used to realize soldering of the first pin41to the first pad21, and the second solder paste layer32is used to realize soldering of the second pin42to the second pad22.

In an embodiment of the present disclosure, the light-emitting diode chip50is used to provide an area light source for a backlight module, the backlight module is applied to a liquid crystal display panel. The base substrate10may be used as a supporting substrate for the backlight module, and is generally composed of a polyimide thin film with a thickness of about 0.1 mm. A copper wire (not marked) and the pad assembly20are attached to the base substrate10, and a thickness of the copper wire ranges from 10 μm to 15 μm. In an actual process, a thickness of the solder paste layer30on the pad assembly20ranges from 5 μm to 8 μm.

Specifically, a fluorescent film (not marked) encapsulated a whole surface is arranged above the light-emitting diode chip50, the fluorescent film is attached above the light-emitting diode chip50and the base substrate10by hot pressing, and a thickness of the fluorescent film ranges from 200 μm to 300 μm.

Since the light-emitting diode chip50is used for the backlight source of the display panel100, it is necessary to increase light-output efficiency of the backlight module. Therefore, a plurality of reflection bumps may be arranged on a side surface of the pad assembly20close to a light-emitting surface. A light extraction dot structure is formed by using the plurality of the reflection bumps, light is scattered to different angles by the light extraction dot structure to improve the light-output efficiency of the backlight module.

Specifically, a material of the reflective bumps is white reflective ink.

In another embodiment of the present disclosure, the light-emitting diode chip50is used as a light-emitting layer of the display panel100. An array driving layer is further arranged between the base substrate10and the light-emitting diode chip50, and the array driving layer may include a plurality of thin film transistors.

Specifically, the thin film transistors may be structures of an etching barrier type, a back channel etching type, a top gate thin film transistor type, etc., and are not limited in detail. For example, taking a top-gate thin film transistor as an example, the top-gate thin film transistor may include a buffer layer located on the base substrate10, an active layer located on the buffer layer, a gate insulating layer located on the active layer, a gate electrode layer located on the gate insulating layer, an interlayer insulating layer located on the gate electrode layer, a source-drain electrode layer on the interlayer insulating layer, and a planarization layer on the source-drain electrode layer.

Specifically, the top-gate thin film transistor mentioned above is not limited to a single-gate structure, and may also be configured as a double-gate structure, etc. The active layer may be one of low-temperature polysilicon, indium gallium zinc oxide, or amorphous silicon.

In the embodiment of the present disclosure, the source-drain electrode layer is electrically connected with the first pin41of the light-emitting diode chip50by the first pad21, and the second pad22is electrically connected with the second pin42of the light-emitting diode chip50.

In the embodiment of the present disclosure, the first pin41is defined with at least one first through hole411, and the second pin42is defined with at least one second through hole421.

Wherein the first limited member61includes at least one first limited sub-member611, an end of the first limited sub-member611corresponds to the first through hole411and is arranged in the first through hole411. The second limited member62includes at least one second limited sub-member621, an end of the second limited sub-member621corresponds to the second through hole421and is arranged in the second through hole421.

In the embodiment of the present disclosure, the light-emitting diode chip50is any one of the mini-LED chip and a micro light-emitting diode chip (micro-LED). Wherein the micro-LED chip refers to a LED chip with a size less than 50 μm.

Since a size of the micro-LED chip is too small, it is difficult for those skilled in the present disclosure to design holes for the pin assembly40corresponding to the light-emitting diode chip50. Therefore, the light-emitting diode chip50in the embodiment of the present disclosure is preferably the mini-LED chip.

The pin assembly40is designed with the holes in the above-mentioned design, and the limit assembly60is provided at a position of the pin assembly40corresponding to the pad assembly20to make the limit assembly60partially penetrates the pin assembly40or completely penetrates the pin assembly40, and the light-emitting diode chip50is firmly fixed on the pad assembly20, thereby preventing a phenomenon of a displacement of a contact surface between the pin assembly40and the pad assembly20caused by a high temperature generated by manufacturing the solder paste layer30during a process of soldering to the pad assembly20, improving a soldering precision between the pin assembly40and the pad assembly20, and ensuring stability of die bonding and uniformity of arrangement of the light-emitting diode chip50.

Meanwhile, the light-emitting diode chip50is used for a self-luminous layer of the display panel100, and a light reflectivity of a material of the pad assembly20needs to be reduced to avoid an influence of external stray light on display effect of the display panel100.

Specifically, since it is difficult for the light-emitting diode chip50and the pad assembly20to be misaligned, therefore, an area of the pad assembly20may be reduced, thereby the light reflectivity of the material of the pad assembly20is reduced, and the display effect of the display panel100is further improved.

In the embodiment of the present disclosure, in a direction of a plan view of the display panel100, an orthographic projection of the first limited sub-member611on the first pad21and an orthographic projection of the light-emitting diode chip50on the first pad21are misaligned. An orthographic projection of the second limited sub-member621on the second pad22and an orthographic projection of the light-emitting diode chip50on the second pad22are misaligned. The above-mentioned design may prevent the limit assembly60and the light-emitting diode chip50from contacting to avoid a poor contact between the light-emitting diode chip50and the limit assembly60.

In the embodiment of the present disclosure, a sum of a thickness of the first solder paste layer31and a thickness of the first pin41is less than or equal to a thickness of the first limited member61. A sum of a thickness of the second solder paste layer32and a thickness of the second pin42is less than or equal to a thickness of the second limited member62.

This design may make the pin assembly40play a role in blocking an offset between the light-emitting diode chip50and the pin assembly40to ensure the stability of die bonding and the uniformity of arrangement of the light-emitting diode chip50.

In the embodiment of the present disclosure, an area of the first through hole411is 10% to 30% of an area corresponding to the first pin41. An area of the second through hole421is 10% to 30% of an area corresponding to the second pin42. When the area of the first through hole411is less than 10% of the area corresponding to the first pin41, or the area of the second through hole421is less than 10% of the area corresponding to the second pin42, a purpose of restricting a movement of the pin assembly40is not served by the limit assembly60. When the area of the first through hole411is greater than 30% of the area corresponding to the first pin41, or the area of the second through hole421is greater than 30% of the area corresponding to the second pin42, above-mentioned design makes a cross-sectional area of the limit assembly60too large, thereby reducing a cross-sectional area of the pin assembly40, reducing a contact area between the pin assembly40and the pad assembly20, and further making the pin assembly40and the pad assembly20prone to the poor contact.

In the embodiment of the present disclosure, an orthographic projection of the first pad21on the light-emitting diode chip50or an orthographic projection of the second pad22on the light-emitting diode chip50is located in the light-emitting diode chip50. This is designed due to a presence of the limit assembly60to make the light-emitting diode chip50be firmly fixed on the pad assembly20, therefore the orthographic projection of the first pad21on the light-emitting diode chip50or the second pad22on the light-emitting diode chip50is located in the light-emitting diode chip50to reduce the area of the pad assembly20.

Since the pad assembly20is generally composed of a copper metal material, however, a reflectivity of the copper metal is higher, a cross-sectional area of the pad assembly20is reduced to decrease a reflectivity of external light irradiated to the pad assembly20and improve the display effect of the display panel100.

In the embodiment of the present disclosure, dimensions and relative distances of the first pad21and the second pad22in each of the pad assemblies20may correspond to a distance between the first pin41and the second pin42connected on the light-emitting diode chip50to be fixed.

Wherein a number and arrangements of the pad assemblies20arranged on the base substrate10may be determined by a number and arrangements of the light-emitting diode chips50to be fixed and are not limited.

In the embodiment of the present disclosure, a shape of the first through hole411and a shape of the second through hole421may be a circle or a pattern with chamfers. A number of the holes on the first pad21or the second pad22may be one or more.

In the embodiment of the present disclosure, a shape of the first limited sub-member611or the second limited sub-member621is a trapezoid. Positions and a number of the first limited sub-members611correspond one-to-one with positions and a number of the holes of the first pin41, and position and a number of the second limited sub-members621correspond one-to-one with positions and a number of the holes of the second pin42.

Specifically, a material of the limit assembly60includes a photosensitive material or a magnetic material.

Referring toFIG.3,FIG.3is a flowchart of a method for manufacturing the first display panel provided by an embodiment of the present disclosure. Wherein the method includes:

Step S10, fixedly connecting two ends of the light-emitting diode chip50with the pin assembly40, and defining the holes on the pin assembly40.

Firstly, providing the light-emitting diode chip50; then, fixedly connecting the first pin41to the end of the light-emitting diode chip50, and fixedly connecting the second pin42to the another end of the light-emitting diode chip50at a same time; finally, defining the holes on the first pin41and the second pin42respectively to form the first through hole411in the first pin41and the second through hole421in the second pin42at the same time.

Step S20, forming the limit assembly60on the base substrate10provided with the pad assembly20.

Firstly, providing the base substrate10; then, forming the pad assembly20on the base substrate10, wherein the pad assembly20includes the first pad21and the second pad22insulated from each other and arranged separately; finally, forming the limit assembly60by coating a photosensitive material on the pad assembly20, and exposing and developing the photosensitive material, wherein the limit assembly60includes the first limited member61arranged on the first pad21and the second limited member62arranged on the second pad22.

Step S30, transferring the light-emitting diode chip50to the base substrate10to make the pin assembly40be soldered to the pad assembly20.

Firstly, transferring the light-emitting diode chip50to above the base substrate10to make the first pin41correspond to the first pad21, and the second pin42correspond to the second pad22at the same time; then, moving the light-emitting diode chip50to make the first limited member61be sleeved in the first through hole411, and the second limited member62be sleeved in the second through hole421; finally, by a soldering process, soldering the first pin41to the first pad21and soldering the second pin42to the second pad22at the same time.

During a transfer process of the light-emitting diode chip50, the holes on the pin assembly40is sleeved with the limit assembly60on the pad assembly20to make the light-emitting diode chip50be fixed on the pad assembly20, therefore, the light-emitting diode chip50is effectively fixed, and a displacement problem of the light-emitting diode chip50caused by a flow of solder is prevented.

The method for manufacturing the display panel100provided by the embodiment of the present disclosure, the holes are defined in the pin assembly40, and the limit assembly60is arranged on the pad assembly20corresponding to a position of the holes of the pin assembly40, and the end of the limit assembly60is embedded in the position of the holes of the pin assembly40, therefore the holes on the pin assembly40is sleeved with the limit assembly60on the pad assembly20to make the light-emitting diode chip50be fixed on the pad assembly20, therefore, the light-emitting diode chip50is effectively fixed, and the displacement problem of the light-emitting diode chip50caused by the flow of solder is prevented.

In view of the technical problems that the contact surface between pins of the LED chip and the pads in an existing display panel is prone to displacement, resulting in poor soldering, the embodiment of the present disclosure provides the display panel100, the display panel100includes the base substrate10, the pad assembly20arranged on the base substrate10, and the light-emitting diode chip50. Both ends of the light-emitting diode chip50are fixedly connected with the pin assembly40, the pin assembly40is soldered to the pad assembly20. Wherein the display panel100further includes the limit assembly60, the end of the limit assembly60is fixedly connected with the pad assembly20, the another end of the limit assembly60is fixedly connected with the pin assembly40. Wherein the pin assembly40is defined with the holes, and the end of the limit assembly60is arranged in the holes.

The display panel100provided by the present disclosure is provided with the limit assembly60arranged on the pad assembly20, and the end of the limit assembly60is fixedly connected with the pad assembly20, the another end of the limit assembly60is sleeved with the pin assembly40through the holes, thereby preventing the phenomenon of the displacement of the contact surface between the pin assembly40of the light-emitting diode chip50and the pad assembly20caused by the high temperature generated by manufacturing the solder paste layer30during the process of soldering to the pad assembly20, improving the soldering precision between the pin assembly40and the pad assembly20, and ensuring the stability of die bonding and the uniformity of arrangement of the light-emitting diode chip50.

FIG.4is a front view of a second display panel provided by an embodiment of the present disclosure.FIG.5is a cross-sectional view of the display panel at B-B inFIG.4. A structure of a display panel100in embodiment 2 of the present disclosure is mostly same as a structure of the display panel100in embodiment 1 of the present disclosure, and only differs in that the first limited member61includes a plurality of third limited sub-members612, the plurality of the third limited sub-members612are arranged around the first pin41. The second limited member612includes a plurality of fourth limited sub-members622, and the plurality of the fourth limited sub-members622are arranged around the second pin42.

Compared with embodiment 1 of the present disclosure, in embodiment 2 of the present disclosure, the plurality of the third limited sub-members612are arranged around the first pin41, and the plurality of the fourth limited sub-members622are arranged around the second pin42at the same time, and the side surface of the limit assembly60is abutted against the pin assembly40to prevent the pin assembly40from moving along the first direction D1 and the second direction D2, the first direction D1 intersects with the second direction D2, and both the first direction D1 and the second direction D2 are parallel to the surface of the base substrate10in contact with the pad assembly20. The above-mentioned design may prevent the holes being defined in the first pin41or the second pin42, thereby saving cost for a mask for a process of making the holes, and further saves a production cost of the display panel100.

In the embodiment of the present disclosure, when the light-emitting diode chip50is used for the backlight source of the display panel100, the light-emitting diode chip50is the mini-LED chip. When the light-emitting diode chip50is used for the self-luminous layer, the light-emitting diode chip50is any one of the mini-LED chip and the micro-LED chip.

Accordingly, the present disclosure further provides a mobile terminal, the mobile terminal includes a terminal body and the above-mentioned display panel100, the terminal body is integrated with the display panel100. A working principle of the mobile terminal is similar to a working principle of the display panel100. The mobile terminal may include but is not limited to mobile phones, tablet computers, computer displays, game consoles, televisions, display screens, wearable devices, and other household appliances or household appliances with display functions.

The present disclosure provides the display panel100and the mobile terminal. The display panel100includes the base substrate10, the pad assembly20arranged on the base substrate10, and the light-emitting diode chip50. Both ends of the light-emitting diode chip50are fixedly connected with the pin assembly40, and the pin assembly40is soldered to the pad assembly20. Wherein the display panel100further includes the limit assembly60, the end of the limit assembly60is fixedly connected with the pad assembly20, the another end of the limit assembly60extends towards the side close to the pin assembly40along the direction perpendicular to the base substrate10, and the thickness of the limit assembly60is greater than the distance between the pin assembly40and the pad assembly20. The display panel100provided by the present disclosure is provided with the limit assembly60arranged on a pad assembly20, and the end of the limit assembly60is fixedly connected with the pad assembly20, the another end of the limit assembly60extends towards the side close to the pin assembly40along the direction perpendicular to the base substrate10, and the thickness of the limit assembly60is greater than the distance between the pin assembly40and the pad assembly20. The side surface of the limit assembly60is abutted against the pin assembly40to prevent the pin assembly40from moving in the first direction D1 and the second direction D2, thereby preventing the phenomenon of the displacement of the contact surface between the pin assembly40of the light-emitting diode chip50and the pad assembly20caused by the high temperature generated by the manufacturing of the solder paste layer30during the process of soldering to the pad assembly20, improving the soldering precision between the pin assembly40and the pad assembly20, and ensuring the stability of die bonding and the uniformity of arrangement of the light-emitting diode chip50.

In the foregoing embodiments, the description of each of the embodiments has respective focuses. For a part that is not described in detail in an embodiment, reference may be made to relevant descriptions in other embodiments.

It can be understood that, for those skilled in the art, equivalent replacements and modifications can be made according to the technical solution and disclosure ideas thereof of the present disclosure, and all these modifications or replacements are considered within the protection scope of the attached claims of the present disclosure.