Patent Publication Number: US-2023161430-A1

Title: Led touch chip and manufacturing method thereof, and display device

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is a continuation of International Application No. PCT/CN2021/133721, filed Nov. 26, 2021, which claims priority to Chinese Patent Application No. 202110260609.2, filed on Mar. 10, 2021, the disclosures of which are hereby incorporated by reference in their entireties. 
    
    
     TECHNICAL FIELD 
     This application relates to the field of display technologies, and particularly to a light-emitting diode (LED) touch chip, a method for manufacturing the LED touch chip, and a display device having the LED touch chip. 
     BACKGROUND 
     At present, light-emitting diodes (LED) have been widely used in the display field because of their advantages of high brightness, low power consumption, long service life, energy saving and environmental protection, etc. With continuous development of display technologies, a resolution of an image becomes higher and higher, and a dot pitch of an LED screen becomes smaller and smaller, thus Mini LED and Micro LED technologies have emerged. Mini LEDs and Micro LEDs are more competitive in a high-end display industry because of their high brightness, wide color gamut, fast refresh rate, and other advantages. For example, Mini LEDs and Micro LEDs can be used in display devices such as conference all-in-one machines and billboards. Generally, such display device needs to have a touch function in practical application, and adopts an infrared touch screen fixed on a frame of an LED display screen, where the infrared touch screen is configured to detect and locate a user&#39;s touch gesture by means of infrared matrices in X and Y directions. 
     However, using the above infrared touch screen to realize a touch function may cause problems such as a poor sensitivity, delay in operations, prone to be affected by external lights, and lack of anti-interference to strong lights. Moreover, the infrared touch screen, as a single module, generally needs to be fixed on the LED display screen through multiple auxiliary fixing parts, which increases structure complexity, size of the whole display device, and cost. 
     SUMMARY 
     The disclosure provides a light-emitting diode (LED) touch chip. The LED touch chip includes a base substrate, a touch-screen structure, and an LED-lamp-bead structure. The touch-screen structure is disposed on the base substrate, and configured to provide a touch function for the LED touch chip. The LED-lamp-bead structure is disposed in the touch-screen structure, and configured to provide a light-emitting display function. The touch-screen structure defines a receiving cavity. The LED-lamp-bead structure is disposed in the receiving cavity and exposed from the receiving cavity to emit lights. 
     The disclosure further provides a display device. The display device includes an LED touch chip and a display panel. The LED touch chip is electrically coupled with the display panel. The LED touch chip includes a base substrate, a touch-screen structure, and an LED-lamp-bead structure. The touch-screen structure is disposed on the base substrate, and configured to provide a touch function for the LED touch chip. The LED-lamp-bead structure is disposed in the touch-screen structure, and configured to provide a light-emitting display function. The touch-screen structure defines a receiving cavity. The LED-lamp-bead structure is disposed in the receiving cavity and exposed from the receiving cavity to emit lights. 
     The disclosure further provides a method for manufacturing an LED touch chip. The method includes the following. A base substrate is provided. An electrode layer is grown on the base substrate. A light-emitting layer is grown on the electrode layer. A fourth electrode layer, a fifth insulating layer, and a fourth insulating layer are grown on the light-emitting layer in sequence. A first touch electrode, a second touch electrode, a first LED-lamp-bead electrode, and a second LED-lamp-bead electrode are manufactured simultaneously, where the first touch electrode is electrically coupled with a first electrode layer, the second touch electrode is electrically coupled with a second electrode layer, the first LED-lamp-bead electrode is electrically coupled with a second semiconductor layer, and the second LED-lamp-bead electrode is electrically coupled with a first semiconductor layer. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a schematic structural diagram illustrating a light-emitting diode (LED) touch chip provided in implementations of the disclosure. 
         FIG.  2    is a detailed schematic structural diagram illustrating the LED touch chip illustrated in  FIG.  1   . 
         FIG.  3    illustrates a top view of an LED touch chip provided in implementations of the disclosure. 
         FIG.  4    is a schematic flowchart illustrating a method for manufacturing an LED touch chip provided in implementations of the disclosure. 
         FIG.  5    is a schematic diagram illustrating a structure formed by performing operations at S 20  of the method illustrated in  FIG.  4   . 
         FIG.  6    is a schematic flowchart illustrating the operations at S 20  of the method illustrated in  FIG.  4   . 
         FIG.  7    is a schematic diagram illustrating a structure formed by performing operations at S 30  of the method illustrated in  FIG.  4   . 
         FIG.  8    is a schematic flowchart illustrating the operations at S 30  of the method illustrated in  FIG.  4   . 
         FIG.  9    is a schematic diagram illustrating a structure formed by performing operations at S 40  of the method illustrated in  FIG.  4   . 
         FIG.  10    is a schematic flowchart illustrating the operations at S 40  of the method illustrated in  FIG.  4   . 
     
    
    
     Reference signs:  100 —LED touch chip;  110 —touch-screen structure;  120 —LED-lamp-bead structure;  1102 —receiving cavity;  111 —first electrode layer;  112 —first insulating layer;  113 —second electrode layer;  114 —second insulating layer  115 —third electrode layer;  116 —third insulating layer;  117 —fourth insulating layer;  118 —first touch electrode;  119 —second touch electrode;  121 —first semiconductor layer;  122 —multi-quantum well light-emitting layer;  123 —second semiconductor layer;  124 —fourth electrode layer;  125 —fifth insulating layer;  126 —first LED-lamp-bead electrode;  127 —second LED-lamp-bead electrode;  130 —touch capacitance region;  10 —base substrate;  20 —electrode layer;  30 —light-emitting layer; S 10 -S 50 —operations of a method for manufacturing the LED touch chip; S 21 -S 26 —operations of a method for manufacturing the electrode layer; S 31 -S 33 —operations of a method for manufacturing the light-emitting layer; S 41 -S 43 —operations of a method for manufacturing the fourth electrode layer, the fifth insulating layer, and the fourth insulating layer. 
     DETAILED DESCRIPTION 
     In order to facilitate understanding of the disclosure, the disclosure will be described fully below with reference to accompanying drawings. The accompanying drawings illustrate exemplary implementations of the disclosure. However, the disclosure may be implemented in different forms and is not limited to the implementations described herein. Rather, these implementations are provided to achieve a thorough and complete understanding of disclosed contents of the disclosure. 
     Unless otherwise defined, all technical and scientific terms herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the disclosure belongs. The terms used in the specification of the disclosure are merely for the purpose of describing implementations of the disclosure, which are not intended to limit the disclosure. 
     With continuous development of display technologies, a resolution of an image becomes higher and higher, and a dot pitch of a light-emitting diodes (LED) screen becomes smaller and smaller, thus Mini LED and Micro LED technologies have emerged. Mini LEDs and Micro LEDs are more competitive in a high-end display industry because of their high brightness, wide color gamut, fast refresh rate, and other advantages. For example, Mini LEDs and Micro LEDs can be used in display devices such as conference all-in-one machines and billboards. Generally, such display device needs to have a touch function in practical application, and adopts an infrared touch screen fixed on a frame of an LED display screen, where the infrared touch screen is configured to detect and locate a user&#39;s touch gesture by means of infrared matrices in X and Y directions. However, using the above infrared touch screen to realize a touch function may cause problems such as a poor sensitivity, delay in operations, prone to be affected by external lights, and lack of anti-interference to strong lights. Moreover, the infrared touch screen, as a single module, generally needs to be fixed on the LED display screen through multiple auxiliary fixing parts, which increases structure complexity, size of the whole display device, and cost. Therefore, how to improve the sensitivity of the LED touch screen, reduce the delay in operations, realize a light and thin box-housing, and avoid interferences of external lights and strong lights on the LED display screen have become problems to-be-solved. 
     Based on the above, the disclosure provides a solution capable of solving the above technical problems, which can solve the problems such as a poor sensitivity of the LED touch screen, delay in operations, prone to be affected by external lights, lack of anti-interference to strong lights, a complex product structure, and a large overall size. The details of the solution will be depicted in the following implementations. 
     The solution of the disclosure will depict an LED touch chip, a method for manufacturing the LED touch chip, and a display device in detail. 
     The disclosure provides an LED touch chip. The LED touch chip includes a base substrate, a touch-screen structure, and an LED-lamp-bead structure. The touch-screen structure is disposed on the base substrate, and configured to provide a touch function for the LED touch chip. The LED-lamp-bead structure is disposed in the touch-screen structure, and configured to provide a light-emitting display function. The touch-screen structure defines a receiving cavity. The LED-lamp-bead structure is disposed in the receiving cavity and exposed from the receiving cavity to emit lights. 
     The above LED touch chip can improve the sensitivity of the touch screen, reduce the cost of the touch screen, reduce a thickness of an outer frame of the touch screen, and improve an anti-interference performance of the touch screen. 
     In some implementations, the touch-screen structure includes a first electrode layer, a first insulating layer, a second electrode layer, a second insulating layer, a third electrode layer, a third insulating layer, and a fourth insulating layer. The first electrode layer is disposed on the base substrate. The first insulating layer is disposed on the first electrode layer and the base substrate. The second electrode layer is disposed on the first insulating layer. The second insulating layer is disposed on the second electrode layer and the first insulating layer. The third electrode layer is disposed on the second insulating layer. Part of the third insulating layer is disposed on the third electrode layer, and the rest of the third insulating layer is disposed on the second insulating layer. The fourth insulating layer is disposed on the third insulating layer, where the receiving cavity is defined in the fourth insulating layer. 
     In some implementations, the touch-screen structure further includes a first touch electrode and a second touch electrode. The first touch electrode extends through the fourth insulating layer, the third insulating layer, the second insulating layer, and the first insulating layer in sequence, and is electrically coupled with the first electrode layer. The second touch electrode extends through the fourth insulating layer, the third insulating layer, and the second insulating layer in sequence, and is electrically coupled with the second electrode layer. 
     In some implementations, the LED-lamp-bead structure includes a first semiconductor layer, a multi-quantum well light-emitting layer, a second semiconductor layer, a fourth electrode layer, and a fifth insulating layer. The first semiconductor layer is disposed on the third insulating layer. The multi-quantum well light-emitting layer is disposed on the first semiconductor layer. The second semiconductor layer is disposed on the multi-quantum well light-emitting layer. The fourth electrode layer is disposed on the second semiconductor layer. The fifth insulating layer is disposed on the fourth electrode layer and the second semiconductor layer. 
     In some implementations, the LED-lamp-bead structure further includes a first LED-lamp-bead electrode and a second LED-lamp-bead electrode. The first LED-lamp-bead electrode extends through the fifth insulating layer and the fourth electrode layer in sequence, and is electrically coupled with the second semiconductor layer. The second LED-lamp-bead electrode is spaced apart from the first LED-lamp-bead electrode, extends through the fifth insulating layer, the fourth electrode layer, the second semiconductor layer, and the multi-quantum well light-emitting layer in sequence, and is electrically coupled with the first semiconductor layer. 
     In some implementations, the first electrode layer and the second electrode layer each are made of indium tin oxide. The first insulating layer, the second insulating layer, and the third insulating layer each are made of a transparent and non-conductive material. The first touch electrode and the second touch electrode each are made of a conductive material. 
     In some implementations, the third electrode layer is not coupled with other electrodes. 
     In some implementations, the fourth insulating layer and the fifth insulating layer each are a distributed Bragg reflector (DBR). The first semiconductor layer is made of an N-type semiconductor material. The second semiconductor layer is made of a P-type semiconductor material. 
     In some implementations, the fourth insulating layer and the fifth insulating layer each are a DBR. The first semiconductor layer is made of a P-type semiconductor material. The second semiconductor layer is made of an N-type semiconductor material. 
     By adopting the above LED touch chip, the problems such as a poor sensitivity of the LED touch screen, delay in operations, prone to be affected by external lights, lack of anti-interference to strong lights, a complex product structure, and a large overall size can be solved, thereby improving the sensitivity of the touch screen, reducing the cost of the touch screen, reducing a thickness of an outer frame of the touch screen, and improving an anti-interference performance of the touch screen. 
     Based on the same inventive concept, the disclosure further provides a display device. The display device includes an LED touch chip and a display panel. The LED touch chip is electrically coupled with the display panel. The LED touch chip includes a base substrate, a touch-screen structure, and an LED-lamp-bead structure. The touch-screen structure is disposed on the base substrate, and configured to provide a touch function for the LED touch chip. The LED-lamp-bead structure is disposed in the touch-screen structure, and configured to provide a light-emitting display function. The touch-screen structure defines a receiving cavity. The LED-lamp-bead structure is disposed in the receiving cavity and exposed from the receiving cavity to emit lights. 
     In the above display device, the LED touch chip of the display device can improve the sensitivity of the touch screen, reduce the cost of the touch screen, reduce a thickness of an outer frame of the touch screen, and improve an anti-interference performance of the touch screen. 
     In some implementations, the touch-screen structure includes a first electrode layer, a first insulating layer, a second electrode layer, a second insulating layer, a third electrode layer, a third insulating layer, and a fourth insulating layer. The first electrode layer is disposed on the base substrate. The first insulating layer is disposed on the first electrode layer and the base substrate. The second electrode layer is disposed on the first insulating layer. The second insulating layer is disposed on the second electrode layer and the first insulating layer. The third electrode layer is disposed on the second insulating layer. Part of the third insulating layer is disposed on the third electrode layer, and the rest of the third insulating layer is disposed on the second insulating layer. The fourth insulating layer is disposed on the third insulating layer, where the receiving cavity is defined in the fourth insulating layer. 
     In some implementations, the touch-screen structure further includes a first touch electrode and a second touch electrode. The first touch electrode extends through the fourth insulating layer, the third insulating layer, the second insulating layer, and the first insulating layer in sequence, and is electrically coupled with the first electrode layer. The second touch electrode extends through the fourth insulating layer, the third insulating layer, and the second insulating layer in sequence, and is electrically coupled with the second electrode layer. 
     In some implementations, the LED-lamp-bead structure includes a first semiconductor layer, a multi-quantum well light-emitting layer, a second semiconductor layer, a fourth electrode layer, and a fifth insulating layer. The first semiconductor layer is disposed on the third insulating layer. The multi-quantum well light-emitting layer is disposed on the first semiconductor layer. The second semiconductor layer is disposed on the multi-quantum well light-emitting layer. The fourth electrode layer is disposed on the second semiconductor layer. The fifth insulating layer is disposed on the fourth electrode layer and the second semiconductor layer. 
     In some implementations, the LED-lamp-bead structure further includes a first LED-lamp-bead electrode and a second LED-lamp-bead electrode. The first LED-lamp-bead electrode extends through the fifth insulating layer and the fourth electrode layer in sequence, and is electrically coupled with the second semiconductor layer. The second LED-lamp-bead electrode is spaced apart from the first LED-lamp-bead electrode, extends through the fifth insulating layer, the fourth electrode layer, the second semiconductor layer, and the multi-quantum well light-emitting layer in sequence, and is electrically coupled with the first semiconductor layer. 
     In some implementations, the third electrode layer is not coupled with other electrodes. 
     In the above display device, the LED touch chip of the display device can improve the sensitivity of the touch screen, reduce the cost of the touch screen, reduce a thickness of an outer frame of the touch screen, and improve an anti-interference performance of the touch screen. 
     Based on the same inventive concept, the disclosure further provides a method for manufacturing an LED touch chip. The method includes the following. A base substrate is provided. An electrode layer is grown on the base substrate. A light-emitting layer is grown on the electrode layer. A fourth electrode layer, a fifth insulating layer, and a fourth insulating layer are grown on the light-emitting layer in sequence. A first touch electrode, a second touch electrode, a first LED-lamp-bead electrode, and a second LED-lamp-bead electrode are manufactured simultaneously, where the first touch electrode is electrically coupled with a first electrode layer, the second touch electrode is electrically coupled with a second electrode layer, the first LED-lamp-bead electrode is electrically coupled with a second semiconductor layer, and the second LED-lamp-bead electrode is electrically coupled with a first semiconductor layer. 
     The LED touch chip manufactured with the method for manufacturing the LED touch chip can solve the problems such as a poor sensitivity of the LED touch screen, delay in operations, prone to be affected by external lights, lack of anti-interference to strong lights, a complex product structure, and a large overall size, thereby improving the sensitivity of the touch screen, reducing the cost of the touch screen, reducing a thickness of an outer frame of the touch screen, and improving an anti-interference performance of the touch screen. 
     In some implementations, the electrode layer is grown on the base substrate as follows. The first electrode layer is grown on the base substrate. A first insulating layer is grown on the first electrode layer and the base substrate. The second electrode layer is grown on the first insulating layer. A second insulating layer is grown on the second electrode layer and the first insulating layer. A third electrode layer is grown on the second insulating layer. A third insulating layer is grown on the third electrode layer and the second insulating layer. 
     In some implementations, the light-emitting layer is grown on the electrode layer as follows. The first semiconductor layer is grown on the third insulating layer. A multi-quantum well light-emitting layer is grown on the first semiconductor layer. The second semiconductor layer is grown on the multi-quantum well light-emitting layer. 
     In some implementations, the fourth electrode layer, the fifth insulating layer, and the fourth insulating layer are grown on the light-emitting layer in sequence as follows. The fourth electrode layer is grown on the second semiconductor layer. The fifth insulating layer is grown on the fourth electrode layer and the second semiconductor layer. The fourth insulating layer is grown on the third insulating layer, where inner walls of the fourth insulating layer and the third insulating layer cooperatively define a receiving cavity, and the light-emitting layer, the fourth electrode layer, the fifth insulating layer, the first LED-lamp-bead electrode, and the second LED-lamp-bead electrode are disposed in the receiving cavity. 
     In some implementations, the first electrode layer, the second electrode layer, and the third electrode layer each are generated through physical vapor deposition (PVD) ion plating. The first insulating layer, the second insulating layer, and the third insulating layer each are generated through chemical vapor deposition (CVD). 
     Referring to  FIG.  1   ,  FIG.  1    is a schematic structural diagram illustrating an LED touch chip provided in implementations of the disclosure. As illustrated in  FIG.  1   , the disclosure provides an LED touch chip  100 . The LED touch chip  100  includes a base substrate (not illustrated), a touch-screen structure  110 , and an LED-lamp-bead structure  120 . The touch-screen structure  110  is disposed on the base substrate, and configured to provide a touch function for the LED touch chip  100 . The LED-lamp-bead structure  120  is disposed in the touch-screen structure  110  and exposed from the touch-screen structure  110 , and configured to provide a light-emitting display function. Specifically, the touch-screen structure  110  defines a receiving cavity  1102 . The receiving cavity  1102  match the LED-lamp-bead structure  120  in size and shape. The LED-lamp-bead structure  120  is disposed in the receiving cavity  1102 . Side and bottom surfaces of the LED-lamp-bead structure  120  are in contact with the receiving cavity  1102 . The LED-lamp-bead structure  120  is exposed from the receiving cavity  1102  to emit required lights. 
     In implementations of the disclosure, the LED-lamp-bead structure  120  may be a flip-chip LED-lamp-bead structure. 
     Referring to  FIG.  2   ,  FIG.  2    is a detailed schematic structural diagram illustrating the LED touch chip illustrated in  FIG.  1   . As illustrated in  FIG.  2   , the touch-screen structure  110  includes a first electrode layer  111 , a first insulating layer  112 , a second electrode insulating layer  113 , a second insulating layer  114 , a third electrode layer  115 , a third insulating layer  116 , a fourth insulating layer  117 , a first touch electrode  118 , and a second touch electrode  119 . 
     The first electrode layer  111  is disposed on the base substrate, and coupled with a substrate electrode (not illustrated) through the first touch electrode  118 . The coupling includes solder-paste bonding. In implementations of the disclosure, the first electrode layer  111  may be made of indium tin oxide, and has good transparency and conductivity. 
     In some implementations, the first electrode layer  111  is disposed on the base substrate, and the first insulating layer  112  is disposed on a surface of the first electrode layer  111  away from the base substrate. In other implementations, part of the first insulating layer  112  is disposed on the first electrode layer  111 , and the rest of the first insulating layer  112  is disposed on the base substrate. That is, both the first electrode layer  111  and the first insulating layer  112  are disposed on the base substrate. In implementations of the disclosure, the first insulating layer  112  may be made of a transparent and non-conductive material, such as resin. 
     The second electrode layer  113  is disposed on the first insulating layer  112 , that is, the first insulating layer  112  is disposed between the first electrode layer  111  and the second electrode layer  113 , to isolate the first electrode layer  111  from the second electrode layer  113 , so that the first electrode layer  111  and the second electrode layer  113  are not conductive with each other. 
     In implementations of the disclosure, the second electrode layer  113  may be made of indium tin oxide, and has good transparency and conductivity. 
     Part of the second insulating layer  114  is disposed on the second electrode layer  113 , and the rest of the second insulating layer  114  is disposed on the first insulating layer  112 . The third electrode layer  115  is disposed on the second insulating layer  114 . That is, the second insulating layer  114  is disposed between the second electrode layer  113  and the third electrode layer  115 , to isolate the second electrode layer  113  from the third electrode layer  115 , so that the second electrode layer  113  and the third electrode layer  115  are not conductive with each other. 
     In implementations of the disclosure, the second insulating layer  114  may be made of a transparent and non-conductive material, such as resin. 
     The third electrode layer  115  is disposed on the second insulating layer  114 , to shield a signal influence of the second electrode layer  113  on a first semiconductor layer  121  in the LED-lamp-bead structure  120 . In implementations of the disclosure, the third electrode layer  115  is in a suspended state, that is, the third electrode layer  115  is not coupled with other electrodes. 
     Part of the third insulating layer  116  is disposed on the third electrode layer  115 , and the rest of the third insulating layer  116  is disposed on the second insulating layer  114 , that is, the third insulating layer  116  encloses the third electrode layer  115 , to isolate the third electrode layer  115  from the first semiconductor layer  121 , so that the third electrode layer  115  and the first semiconductor layer  121  are not conductive with each other. 
     In implementations of the disclosure, the third insulating layer  116  may be made of a transparent and non-conductive material, such as resin. 
     The fourth insulating layer  117  is disposed on the third insulating layer  116 , and defines the receiving cavity  1102 . That is, the fourth insulating layer  117  is disposed in an edge region on the third insulating layer  116 , a periphery of the fourth insulating layer  117  is aligned with a periphery of the third insulating layer  116 , and the fourth insulating layer  117  is disposed around the LED-lamp-bead structure  120 . In other words, inner walls of the fourth insulating layer  117  and the third insulating layer  116  cooperatively define the receiving cavity  1102 , the LED-lamp-bead structure  120  is disposed on the third insulating layer  116 , and the fourth insulating layer  117  is disposed around the LED-lamp-bead structure  120 . That is, the LED-lamp-bead structure  120  is disposed in the receiving cavity  1102 . 
     In implementations of the disclosure, the fourth insulating layer  125  may be a distributed Bragg reflector (DBR). 
     The first touch electrode  118  extends through the fourth insulating layer  117 , the third insulating layer  116 , the second insulating layer  114 , and the first insulating layer  112  in sequence, and is electrically coupled with the first electrode layer  111 . The first touch electrode  118  is further electrically coupled with the substrate electrode. That is, the first touch electrode  118  is used to electrically connect the first electrode layer  111  and the substrate electrode. In implementations of the disclosure, the first touch electrode  118  may be made of a material with good electrical conductivity. The coupling between the first touch electrode  118  and the substrate electrode includes solder-paste bonding. 
     The second touch electrode  119  extends through the fourth insulating layer  117 , the third insulating layer  116 , and the second insulating layer  114  in sequence, and is electrically coupled with the second electrode layer  113 . The second touch electrode  119  is further electrically coupled with the substrate electrode. That is, the second touch electrode  119  is used to electrically connect the second electrode layer  113  and the substrate electrode. In implementations of the disclosure, the second touch electrode  119  may be made of a material with good electrical conductivity. The coupling between the second touch electrode  119  and the substrate electrode includes solder-paste bonding. 
     An exemplary structure of the touch-screen structure  110  is illustrated above. In some implementations, the touch-screen structure  110  includes the first electrode layer  111 , the first insulating layer  112 , the second electrode layer  113 , the second insulating layer  114 , and the fourth insulating layer  117 . The first electrode layer  111  is disposed on the base substrate. The first insulating layer  112  is disposed on the first electrode layer  111 . The second electrode layer  113  is disposed on the first insulating layer  112 . The second insulating layer  114  is disposed on the second electrode layer  113  and the first insulating layer  112 . The fourth insulating layer  117  is disposed on the second insulating layer  114 , where the fourth insulating layer  117  defines the receiving cavity  1102 . 
     In some implementations, the touch-screen structure  110  further includes the first touch electrode  118  and the second touch electrode  119 . The first touch electrode  118  extends through the fourth insulating layer  117 , the second insulating layer  114 , and the first insulating layer  112  in sequence, and is electrically coupled with the first electrode layer  111 . The second touch electrode  119  extends through the fourth insulating layer  117  and the second insulating layer  114  in sequence, and is electrically coupled with the second electrode layer  113 . 
     In some implementations, the touch-screen structure  110  further includes a third electrode layer  115  and a third insulating layer  116  which are disposed between the second insulating layer  114  and the fourth insulating layer  117 . The third electrode layer  115  is disposed on the second insulating layer  114 . Part of the third insulating layer  116  is disposed on the third electrode layer  115 , and the rest of the third insulating layer  116  is disposed on the second insulating layer  114 . The fourth insulating layer  117  is disposed on the third insulating layer  116 . 
     In some implementations, the first touch electrode  118  extends through the fourth insulating layer  117 , the third insulating layer  116 , the second insulating layer  114 , and the first insulating layer  112  in sequence, and is electrically coupled with the first electrode layer  111 . The second touch electrode  119  extends through the fourth insulating layer  117 , the third insulating layer  116 , and the second insulating layer  114  in sequence, and is electrically coupled with the second electrode layer  113 . 
     In implementations of the disclosure, the LED-lamp-bead structure  120  includes a first semiconductor layer  121 , a multi-quantum well light-emitting layer  122 , a second semiconductor layer  123 , a fourth electrode layer  124 , a fifth insulating layer  125 , a first LED-lamp-bead electrode  126 , and a second LED-lamp-bead electrode  127 . 
     The first semiconductor layer  121  is disposed on the third insulating layer  116 , and configured to provide electrons to recombine with holes provided by the second semiconductor layer  123  to generate photons. In implementations of the disclosure, the first semiconductor layer  121  may be made of an N-type semiconductor material, for example, N-type gallium nitride (GaN). 
     The multi-quantum well light-emitting layer  122  is disposed on the first semiconductor layer  121 , and configured to provide a place where electrons provided by the first semiconductor layer  121  recombine with holes provided by the second semiconductor layer  123  to generate photons. 
     The second semiconductor layer  123  is disposed on the multi-quantum well light-emitting layer  122 , and configured to provide holes to recombine with electrons provided by the first semiconductor layer  121  to generate photons. In implementations of the disclosure, the second semiconductor layer  123  may be made of a P-type semiconductor material, for example, P-type gallium nitride (GaN). 
     The fourth electrode layer  124  is disposed on the second semiconductor layer  123 , and configured to disperse an electric field, so that the electric field of the second semiconductor layer  123  is more uniform and a luminous efficiency is higher. 
     Part of the fifth insulating layer  125  is disposed on the fourth electrode layer  124 , and the rest of the fifth insulating layer  125  is disposed on the second semiconductor layer  123 , that is, the fifth insulating layer  125  enclose the fourth electrode layer  124 . The fifth insulating layer  125  is used to prevent mutual conduction between electrodes. In implementations of the disclosure, the fifth insulating layer  125  may be a DBR. It can be understood that, in an actual manufacturing process, the fourth insulating layer  117  and the fifth insulating layer  125  may be manufactured at the same time, and manufactured integrally. In implementations of the disclosure, for convenience of description, the fourth insulating layer  117  and the fifth insulating layer  125  are referred to as different insulating layers according to their different positions. 
     The first LED-lamp-bead electrode  126  extends through the fifth insulating layer  125  and the fourth electrode layer  124  in sequence, and is electrically coupled with the second semiconductor layer  123 . The first LED-lamp-bead electrode  126  is further electrically coupled with the substrate electrode. That is, the first LED-lamp-bead electrode  126  is used to electrically connect the second semiconductor layer  123  and the substrate electrode. 
     The second LED-lamp-bead electrode  127  is spaced apart from the first LED-lamp-bead electrode  126 , extends through the fifth insulating layer  125 , the fourth electrode layer  124 , the second semiconductor layer  123 , and the multi-quantum well light-emitting layer  122  in sequence, and is electrically coupled with the first semiconductor layer  121 . The second LED-lamp-bead electrode  127  is further electrically coupled with the substrate electrode. That is, the second LED-lamp-bead electrode  127  is used to electrically connect the first semiconductor layer  121  and the substrate electrode. 
     Referring to  FIG.  3   ,  FIG.  3    illustrates a top view of an LED touch chip provided in implementations of the disclosure. For convenience of description, in an LED touch chip  100  illustrated in  FIG.  3   , only the first electrode layer  111 , the second electrode layer  113 , the first touch electrode  118 , and the second touch electrode  119  are illustrated, while the LED-lamp-bead structure  120 , the first insulating layer  112 , the second insulating layer  114 , the third electrode layer  115 , the third insulating layer  116 , and the fourth insulating layer  117  are omitted. 
     The LED touch chip  100  illustrated in  FIG.  3    further has a touch capacitance region  130 . The touch capacitance region  130  refers to an overlapped region of the first electrode layer  111  and the second electrode layer  113 . The first touch electrode  118  and the second touch electrode  119  are respectively disposed on opposite sides of the touch capacitance region  130 . The first electrode layer  111  is disposed on the base substrate, and coupled with the substrate electrode through the first touch electrode  118 . The second electrode layer  113  is disposed on the first insulating layer  112 , and coupled with the substrate electrode through the second touch electrode  119 . The coupling includes solder-paste bonding. In implementations of the disclosure, each of the first electrode layer  111  and the second electrode layer  113  may be made of indium tin oxide, and has good transparency and conductivity. 
     Referring to  FIG.  4   ,  FIG.  4    is a schematic flowchart illustrating a method for manufacturing an LED touch chip provided in implementations of the disclosure. The method for manufacturing the LED touch chip is used to manufacture the LED touch chip of the implementations illustrated in  FIG.  1    and  FIG.  2   , to improve the sensitivity of the touch screen, reduce the cost of the touch screen, reduce a thickness of an outer frame of the touch screen, and improve an anti-interference performance of the touch screen. As illustrated in  FIG.  4   , the method for manufacturing the LED touch chip at least includes the following. 
     At S 10 , a base substrate  10  is provided. 
     Specifically, referring to  FIG.  5   , in these implementations, the base substrate  10  is provided to prepare for subsequent growth of a layer structure of the LED touch chip. 
     At S 20 , an electrode layer  20  is grown on the base substrate  10 . 
     Specifically, referring to  FIG.  5   , in implementations of the disclosure, the electrode layer  20  includes a first electrode layer  111 , a first insulating layer  112 , a second electrode layer  113 , a second insulating layer  114 , a third electrode layer  115 , and a third insulating layer  116 . 
     In these implementations, referring to  FIG.  6   , growing the electrode layer  20  on the base substrate  10  at least includes the following. 
     At S 21 , the first electrode layer  111  is grown on the base substrate  10 . 
     The first electrode layer  111  is coupled with the substrate electrode through the first touch electrode  118 , where the coupling includes solder-paste bonding. 
     In implementations of the disclosure, the first electrode layer  111  may be made of indium tin oxide, and has good transparency and conductivity. 
     At S 22 , the first insulating layer  112  is grown on the first electrode layer  111  and the base substrate  10 . 
     Part of the first insulating layer  112  is grown on the first electrode layer  111 , and the rest of the first insulating layer  112  is grown on the base substrate. In implementations of the disclosure, the first insulating layer  112  may be made of a transparent and non-conductive material, such as resin. 
     At S 23 , the second electrode layer  113  is grown on the first insulating layer  112 . 
     The first insulating layer  112  is disposed between the first electrode layer  111  and the second electrode layer  113 , to isolate the first electrode layer  111  from the second electrode layer  113 , so that the first electrode layer  111  and the second electrode layer  113  are not conductive with each other. 
     In implementations of the disclosure, the second electrode layer  113  may be made of indium tin oxide, and has good transparency and conductivity. 
     At S 24 , the second insulating layer  114  is grown on the second electrode layer  113  and the first insulating layer  112 . 
     Part of the second insulating layer  114  is grown on the second electrode layer  113 , and the rest of the second insulating layer  114  is grown on the first insulating layer  112 . That is, the second insulating layer  114  is disposed between the second electrode layer  113  and the third electrode layer  115 , to isolate the second electrode layer  113  from the third electrode layer  115 , so that the second electrode layer  113  and the third electrode layer  115  are not conductive with each other. In implementations of the disclosure, the second insulating layer  114  may be made of a transparent and non-conductive material, such as resin. 
     At S 25 , the third electrode layer  115  is grown on the second insulating layer  114 . 
     The third electrode layer  115  is used to shield a signal influence of the second electrode layer  113  on the first semiconductor layer  121  in the LED-lamp-bead structure  120 . In implementations of the disclosure, the third electrode layer  115  is in a suspended state, and is not coupled with other electrodes. 
     At S 26 , the third insulating layer  116  is grown on the third electrode layer  115  and the second insulating layer  114 . 
     Part of the third insulating layer  116  is grown on the third electrode layer  115 , and the rest of the third insulating layer  116  is grown on the second insulating layer  114 . That is, the third insulating layer  116  encloses the third electrode layer  115 , to isolate the third electrode layer  115  from the first semiconductor layer  121 , so that the third electrode layer  115  and the first semiconductor layer  121  are not conductive with each other. 
     In implementations of the disclosure, the third insulating layer  116  may be made of a transparent and non-conductive material, such as resin. 
     In implementations of the disclosure, the first electrode layer  111 , the second electrode layer  113 , and the third electrode layer  115  each are generated through physical vapor deposition (PVD) ion plating, coating, exposure, development, etching, and other processes. The first insulating layer  112 , the second insulating layer  114 , and the third insulating layer  116  each are generated through chemical vapor deposition (CVD). 
     At S 30 , a light-emitting layer  30  is grown on the electrode layer  20 . 
     Specifically, referring to  FIG.  7   , in implementations of the disclosure, the light-emitting layer  30  includes a first semiconductor layer  121 , a multi-quantum well light-emitting layer  122 , and a second semiconductor  123  which are stacked and grown in sequence. 
     In these implementations, referring to  FIG.  8   , growing the light-emitting layer  30  on the electrode layer  20  at least includes the following. 
     At S 31 , the semiconductor first layer  121  is grown on the third insulating layer  116 . 
     The first semiconductor layer  121  is configured to provide electrons to recombine with holes provided by the second semiconductor layer  123  to generate photons. In implementations of the disclosure, the first semiconductor layer  121  may be made of an N-type semiconductor material, for example, N-type gallium nitride (GaN). It should be noted that, types of the first semiconductor layer and the second semiconductor layer are not limited in the disclosure. In other implementations, the first semiconductor layer is made of a P-type semiconductor material, and the second semiconductor layer is made of an N-type semiconductor material. 
     At S 32 , the multi-quantum well light-emitting layer  122  is grown on the first semiconductor layer  121 . 
     The multi-quantum well light-emitting layer  122  is configured to provide a place where electrons provided by the first semiconductor layer  121  recombine with holes provided by the second semiconductor layer  123  to generate photons. 
     At S 33 , the second semiconductor layer  123  is grown on the multi-quantum well light-emitting layer  122 . 
     The second semiconductor layer  123  is configured to provide holes to recombine with electrons provided by the first semiconductor layer  121  to generate photons. In implementations of the disclosure, the second semiconductor layer  123  may be made of a P-type semiconductor material, for example, P-type gallium nitride (GaN). 
     At S 40 , a fourth electrode layer  124 , a fifth insulating layer  125 , and a fourth insulating layer  117  are sequentially grown on the light-emitting layer  30 . 
     Specifically, referring to  FIG.  9    and  FIG.  10   , in these implementations, sequentially growing the fourth electrode layer  124 , the fifth insulating layer  125 , and the fourth insulating layer  117  on the light-emitting layer  30  at least includes the following. 
     At S 41 , the fourth electrode layer  124  is grown on the second semiconductor layer  123 . 
     The fourth electrode layer  124  is configured to disperse an electric field, so that the electric field of the second semiconductor layer  123  is more uniform and a luminous efficiency is higher. 
     At S 42 , the fifth insulating layer  125  is grown on the fourth electrode layer  124  and the second semiconductor layer  123 . 
     Part of the fifth insulating layer  125  is grown on the fourth electrode layer  124 , and the rest of the fifth insulating layer  125  is grown on the second semiconductor layer  123 , that is, the fifth insulating layer  125  encloses the fourth electrode layer  124 . The fifth insulating layer  125  is used to prevent mutual conduction between electrodes. In implementations of the disclosure, the fifth insulating layer  125  may be a DBR. 
     At S 43 , the fourth insulating layer  117  is grown on the third insulating layer  116 , where the receiving cavity  1102  is defined in the fourth insulating layer  117 . 
     Specifically, the fourth insulating layer  117  is disposed on the third insulating layer  116 , and defines the receiving cavity  1102 . That is, a periphery of the fourth insulating layer  117  is aligned with a periphery of the third insulating layer  116 , and the fourth insulating layer  117  is disposed around the LED-lamp-bead structure  120 . In other words, inner walls of the fourth insulating layer  117  and the third insulating layer  116  cooperatively define the receiving cavity  1102 , the LED-lamp-bead structure  120  is disposed on the third insulating layer  116 , and the fourth insulating layer  117  is disposed around the LED-lamp-bead structure  120 . That is, the LED-lamp-bead structure  120  is disposed in the receiving cavity  1102 . It can be understood that, in the actual manufacturing process, the fourth insulating layer  117  and the fifth insulating layer  125  may be manufactured at the same time, and manufactured integrally. In implementations of the disclosure, for convenience of description, the fourth insulating layer  117  and the fifth insulating layer  125  are referred to as different insulating layers according to their different positions. 
     At S 50 , a first touch electrode  118 , a second touch electrode  119 , a first LED-lamp-bead electrode  126 , and a second LED-lamp-bead electrode  127  are manufactured simultaneously, where the first touch electrode  118  is electrically coupled with the first electrode layer  111 , the second touch electrode  119  is electrically coupled with the second electrode layer  113 , the first LED-lamp-bead electrode  126  is electrically coupled with the second semiconductor layer  123 , and the second LED-lamp-bead electrode  127  is electrically coupled with the first semiconductor layer  121 . 
     Specifically, referring to  FIG.  2   , the first touch electrode  118  extends through the fourth insulating layer  117 , the third insulating layer  116 , the second insulating layer  114 , and the first insulating layer  112  in sequence, and is electrically coupled with the first electrode layer  111 . The first touch electrode  118  is further electrically coupled with the substrate electrode. That is, the first touch electrode  118  is used to electrically connect the first electrode layer  111  and the substrate electrode. In implementations of the disclosure, the first touch electrode  118  may be made of a material with good electrical conductivity. The coupling between the first touch electrode  118  and the substrate electrode includes solder-paste bonding. 
     The second touch electrode  119  extends through the fourth insulating layer  117 , the third insulating layer  116 , and the second insulating layer  114  in sequence, and is electrically coupled with the second electrode layer  113 . The second touch electrode  119  is further electrically coupled with the substrate electrode. That is, the second touch electrode  119  is used to electrically connect the second electrode layer  113  and the substrate electrode. In implementations of the disclosure, the second touch electrode  119  may be made of a material with good electrical conductivity. The coupling between the second touch electrode  119  and the substrate electrode includes solder-paste bonding. 
     The first LED-lamp-bead electrode  126  extends through the fifth insulating layer  125  and the fourth electrode layer  124  in sequence, and is electrically coupled with the second semiconductor layer  123 . The first LED-lamp-bead electrode  126  is further electrically coupled with the substrate electrode. That is, the first LED-lamp-bead electrode  126  is used to electrically connect the second semiconductor layer  123  and the substrate electrode. 
     The second LED-lamp-bead electrode  127  extends through the fifth insulating layer  125 , the fourth electrode layer  124 , the second semiconductor layer  123 , and the multi-quantum well light-emitting layer  122  in sequence, and is electrically coupled with the first semiconductor layer  121 . The second LED-lamp-bead electrode  127  is further electrically coupled with the substrate electrode. That is, the second LED-lamp-bead electrode  127  is used to electrically connect the first semiconductor layer  121  and the substrate electrode. 
     Implementations of the disclosure further provide a display device. The display device includes the LED touch chip of the implementations illustrated in  FIG.  1    and  FIG.  2   . The display device further includes a display panel electrically coupled with the LED touch chip. The display device includes, but is not limited to, a Mini LED panel, a Micro LED panel, a mobile phone, a tablet computer, a navigator, a display, and other electronic devices or components with a display function, which is not limited in the disclosure. 
     It should be understood that, the application of the disclosure is not limited to the foregoing exemplary implementations. Those of ordinary skill in the art can make improvements or equivalent substitutions to the disclosure according to the above descriptions, and all these improvements and equivalent substitutions, however, shall be encompassed within the protection scope of the appended claims of the disclosure.